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EP3454993B1 - Valve gun for a high-pressure cleaning device - Google Patents

Valve gun for a high-pressure cleaning device Download PDF

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Publication number
EP3454993B1
EP3454993B1 EP16722890.7A EP16722890A EP3454993B1 EP 3454993 B1 EP3454993 B1 EP 3454993B1 EP 16722890 A EP16722890 A EP 16722890A EP 3454993 B1 EP3454993 B1 EP 3454993B1
Authority
EP
European Patent Office
Prior art keywords
valve
actuating
gun
handle
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16722890.7A
Other languages
German (de)
French (fr)
Other versions
EP3454993A1 (en
Inventor
Michael Maier
Christoph Breuer
Ralph Seitter
Daniel KNÖDLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP3454993A1 publication Critical patent/EP3454993A1/en
Application granted granted Critical
Publication of EP3454993B1 publication Critical patent/EP3454993B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026Gate valves; Sliding valves; Cocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01Spray pistols, discharge devices

Definitions

  • the invention relates to a valve gun for a high-pressure cleaning device for the controlled dispensing of a cleaning liquid, with a gun housing which has a handle with an upper end area assigned to the thumb and forefinger of the user and a lower end area facing away from the upper end area, and with one in the gun housing in the flow path between a liquid inlet and a liquid outlet arranged valve, which has a closing body which rests tightly in a closed position on a valve seat and is movable by moving a valve tappet into an open position, wherein the liquid outlet is arranged on a front side of the gun housing, and wherein an actuating member for displacement of the valve tappet is arranged on a rear side of the handle facing away from the liquid outlet.
  • the cleaning fluid used is preferably water, to which a cleaning chemical can be added.
  • a pressure hose can be connected to the liquid inlet of the valve gun, and a spray lance, for example, can be connected to the liquid outlet of the valve gun. Pressurized cleaning fluid can be fed to the valve gun via the pressure hose, and the cleaning fluid can be directed at an object via the spray lance.
  • the user can actuate an actuating member of the valve pistol and thereby open a valve arranged in the flow path between the liquid inlet and the liquid outlet.
  • the actuating member is mechanically coupled to a valve tappet which can be displaced by actuating the actuating member and thereby moves a closing body of the valve into an open position in which the closing body is at a distance from a valve seat.
  • the liquid inlet is in flow connection with the liquid outlet. If the user releases the actuating member, the closing body returns to its closed position and interrupts the flow connection between the liquid inlet and the liquid outlet.
  • a hand-controlled nozzle in which an actuating member is pivotably mounted on a liquid outlet and is coupled to a valve tappet via a toggle lever. This requires a not inconsiderable structural effort.
  • a valve pistol in which an actuating lever is pivotably mounted on a central region of the pistol housing and is coupled to a release lever pivotably mounted on the lower end region of the handle.
  • the actuation lever like the release lever, is arranged on the front of the handle facing the liquid outlet and can be actuated by the user with the fingers in the manner of a classic trigger. If the device is operated for a long time, this can lead to fatigue for the user.
  • the use of two levers coupled to one another also makes the valve pistol prone to failure and expensive.
  • valve pistol in which the liquid inlet and also the liquid outlet are arranged adjacent to the lower end region of the handle.
  • the actuating member is designed as a hand lever which is arranged on the front of the handle facing the liquid outlet and can be operated by the user with his fingers. As already mentioned, this can lead to fatigue for the user if the device is operated for a longer period of time.
  • a valve pistol in which the actuating member is located on the rear side of the handle facing away from the liquid outlet, is from the WO 2015/086085 A1 known.
  • the arrangement of the actuating member on the back of the handle has the advantage that the user can actuate the actuating member with the heel of his hand, the valve pistol being pressed against the heel of the hand of the user under the influence of the recoil of the cleaning liquid emerging from the liquid outlet. This facilitates the handling of the valve gun, since the user's fingers are relieved.
  • the actuator is from the document WO 2015/086085 A1 known valve pistol coupled to the valve tappet via a coupling lever.
  • a valve gun is known with a gun housing which has an elongated housing section and a handle.
  • the handle protrudes obliquely downward from a rear region of the elongated housing section.
  • a valve which has a valve stem is arranged in the elongated housing section.
  • One end segment of the valve tappet protrudes from the rear of the elongated housing section.
  • a release lever is pivotably mounted on the rear of the handle, the upper end of which engages around the end segment of the valve plunger protruding from the elongated housing section and rests on a driver rigidly connected to this end segment. If the release lever is pivoted by the user, then the release lever presses with its upper end area against the driver, so that the latter is displaced backwards together with the valve tappet.
  • valve pistols with a release lever mounted on the outside of the pistol housing, which interacts with its upper end region via a driver with a valve tappet, which is arranged in an elongated housing section of the pistol housing, are from the documents DE 20 2015 100 240 U1 and DE 201 16 060 U1 known.
  • the object of the present invention is to develop a valve pistol of the generic type in such a way that it has a simpler structural design.
  • an actuating force can be transmitted from the actuating member to the valve tappet without the need for additional mechanical coupling elements.
  • the valve tappet is acted upon by the actuating force exerted by the actuating member at a distance from the upper end region of the handle.
  • the actuating member has a force application element that can be applied to the valve tappet.
  • the actuating force can be applied to the valve tappet via the force application element in order to move the closing body of the valve into an open position.
  • the force application element can rest loosely on the valve tappet.
  • the actuating member has an actuating body which, in a rest position, protrudes from the rear of the handle facing away from the liquid outlet with a contact area facing away from the liquid outlet and can be moved into a release position by the user with the ball of his hand, the force application element being arranged on the actuating body. If the actuating body is moved by the user from the rest position into the release position, the force application element arranged on the actuating body exerts an actuating force on the valve tappet. This has the consequence that the valve tappet moves the closing body of the valve into the open position.
  • the actuating body can be pivoted back and forth about a first pivot axis between the rest position and the release position.
  • the actuator body forms a lever that can be pivoted by the user with the ball of the hand.
  • the first pivot axis is arranged in the lower end area of the handle. This has the consequence that the part of the actuating body which is located in the area of the thumb and forefinger of the user occupies a considerable distance from the pivot axis. As a result, the user can pivot the actuating body from the rest position into the release position with rather little effort.
  • the valve is arranged at least partially in the lower end area of the handle and / or in a protective bracket of the pistol housing that adjoins the lower end area.
  • the valve pistol can form a grip opening between the protective bracket and the handle, into which the user can reach with his fingers when grasping the handle.
  • the valve can be positioned at least partially, preferably completely, in the lower end area of the handle or, for example, also in a transition area between the lower end area of the handle and the protective bracket or completely in the protective bracket.
  • valve tappet can preferably be acted upon with an actuating force by the actuating member in the direction of the lower end area of the handle offset to the upper end area.
  • the actuating member applies the actuating force to the valve tappet in the lower end area of the handle or in the area of a protective bracket of the pistol housing.
  • the valve pistol can form a grip opening between the protective bracket and the handle, into which the user can reach with his fingers when grasping the handle.
  • the transmission of the actuating force from the actuating element to the valve stem in an area of the pistol housing offset from the upper end area of the handle, in particular in the lower area of the handle or in the area of the protective bar, enables, in combination with the arrangement of the actuating element on the rear of the handle, a structurally simple and easy design of the valve pistol that is not susceptible to malfunctions, although fatigue-free operation is possible.
  • the valve tappet can be rigidly connected to the closing body of the valve.
  • the valve tappet is integrally connected to the closing body, so that the valve tappet together with the closing body forms a common component that can be made of metal, for example.
  • the closing body can be designed, for example, spherical or form a cone which can be moved by the valve stem from a closed position into an open position.
  • the valve preferably has a valve housing with a valve inlet and a valve outlet, the valve seat and the closing body being arranged in the valve housing and the valve outlet being in flow connection with the liquid outlet of the valve gun via a drain line.
  • a drain line is arranged in the gun housing, via which the cleaning liquid can flow from the valve outlet to the liquid outlet of the gun housing.
  • At least a section of the drain line is arranged in the protective bracket of the gun housing.
  • At least a section of the drain line is arranged in the handle of the pistol housing.
  • a section of the drain line extends from the valve outlet to the upper end area of the handle.
  • a further line section of the drainage line, which runs inside the gun housing, can connect to this line section.
  • At least one section of the drain line is preferably designed as a pipe section.
  • the force application element can be designed, for example, in the form of a cam, a projection, a stop or a driver, or, for example, in the form of a receptacle into which the valve tappet dips with an end facing away from the closing body.
  • the force application element is connected in one piece to the actuating body. It can be provided, for example, that the force application element forms a one-piece plastic molded part together with the actuating body.
  • the force application element forms a separate component that is fixed to the actuating body.
  • the force application element can for example be designed in the form of a pin which is fixed on the actuating body.
  • the force application element can for example be held in a sleeve-shaped receptacle of the actuating body, in particular the force application element can be pressed into the sleeve-shaped receptacle.
  • the force application element is preferably made of metal.
  • the actuating body forms a lever arm on which the contact area protruding from the rear of the handle in the rest position and the force application element are arranged.
  • the actuating body is designed in the form of a one-armed lever.
  • the actuating body forms a lever arm on which both the contact area and the force application element are arranged. If the actuating body is pivoted forwards from the rest position in the direction of the liquid outlet into the release position, the force application element is pivoted in the same direction and exerts a pressure force on the valve tappet. The closing body is thereby moved by the valve tappet in a direction facing away from the handle, lifting off the valve seat and releasing the flow connection between the liquid inlet and the liquid outlet.
  • the actuating body forms a first lever arm and a second lever arm, the contact area of the actuating body protruding from the rear of the handle in the rest position being arranged on the first lever arm and the force application element being arranged on the second lever arm.
  • the actuating body is designed in the form of a two-armed lever. The first pivot axis is arranged between the force application element and the contact area. If the actuating body is pivoted forwards in the direction of the liquid outlet, the force application element is pivoted in the opposite direction and exerts a tensile force on the valve tappet. The closing body is thereby moved by the valve tappet in a direction facing the handle, lifting off the valve seat and releasing the flow connection between the liquid inlet and the liquid outlet.
  • the actuating body has a first end associated with the thumb and forefinger of the user, the distance between the force applying element and the first end being at least four times the distance between the force applying element and the first pivot axis.
  • Such a configuration results in very advantageous lever ratios, so that the user can pivot the actuating body about the first pivot axis with relatively little effort and nevertheless a considerable actuating force is exerted on the valve tappet by the force application element.
  • the closing body can be acted upon by a closing force in the direction of the valve seat by moving the actuating body from the release position into the rest position.
  • the actuating body can also exert an actuating force to close the valve. If the actuating body is moved from the rest position into the release position, an actuating force can be exerted on the valve stem via the force application element be exercised so that the valve stem moves the closing body into the open position. If the actuating body is moved from the release position into the rest position, an actuating force can be exerted on the valve tappet, preferably again via the force application element, that the valve tappet moves the closing body into the closed position.
  • the valve pistol favorably comprises a restoring spring assigned to the actuating body, which acts on the actuating body with a restoring force in the direction of the rest position.
  • a restoring spring assigned to the actuating body which acts on the actuating body with a restoring force in the direction of the rest position.
  • the user can move the actuating body from the rest position into the release position against the restoring force exerted by the restoring spring. If the user releases the actuating body, it is moved back into the rest position by the return spring assigned to the actuating body.
  • the restoring force exerted by the restoring spring on the actuating body during the transition from the release position to the rest position can be transmitted to the valve stem via the force application element, so that it moves the closing body back into its closed position.
  • the closing body can be moved from the closed position into the open position against the pressure of the cleaning fluid acting on it. If the actuating force exerted on the closing body via the valve tappet does not apply, the closing body automatically assumes its closed position again due to the pressure of the cleaning fluid acting on it.
  • the valve has a closing spring which applies a closing force to the closing body.
  • the closing body moves from the closed position into the open position counter to the action of the closing spring.
  • the valve tappet is from the actuating member with an actuating force can be acted upon to open the valve, which is greater than the closing force exerted by the closing spring on the closing body. If the actuating force of the actuating member is omitted, the closing body automatically assumes its closed position under the action of the closing spring.
  • the valve pistol has a locking member that can be moved back and forth between a locking position and an unlocking position for locking the actuating member. With the aid of the locking member, unintentional movement of the actuating member can be prevented. If the locking member assumes its blocking position, it locks the actuating member so that the actuating member cannot be moved relative to the gun housing. If the locking member is in its unlocking position, the actuating member can be moved relative to the gun housing.
  • the locking member is arranged on the front of the handle facing the liquid outlet. If the user grasps the handle of the pistol housing with his hand, he can intuitively move the locking member arranged on the front of the handle from the locking position to the unlocking position, so that the user can then move the actuating member to actuate the valve tappet with an actuating force To pressurize opening of the valve.
  • the locking member is slidably mounted on the gun housing.
  • the locking member can be mounted so as to be linearly displaceable.
  • the locking member is mounted pivotably about a pivot axis assigned to the locking member. This enables a particularly simple design of the valve pistol.
  • the pivot axis assigned to the locking member is advantageously aligned parallel to the first pivot axis assigned to the actuating member.
  • the pivot axis assigned to the locking member is arranged in the upper end area of the handle or in an area of the pistol housing adjacent to the upper end area of the handle. If the user grasps the upper end area of the handle with his thumb and forefinger, he can simultaneously pivot the locking member from the locking position into the unlocking position. This enables particularly simple handling of the valve pistol.
  • the locking member has an actuating arm and a locking arm, the actuating arm protruding from the front of the handle facing the liquid outlet in the locking position of the locking member and the locking arm blocking a movement of the actuating member in the locking position of the locking member.
  • the locking arm In the locking position of the locking member, the locking arm can, for example, rest with its free end on the actuating member or occupy a small distance from the actuating member so that the user cannot noticeably move it.
  • the locking arm and the actuating arm are favorably oriented at an angle to one another.
  • the locking member is L-shaped, the actuating arm forming a first leg and the locking arm forming a second leg of the locking member.
  • valve pistol has a return spring which is assigned to the locking element and which acts on the locking element with a restoring force in the direction of the blocking position. Does the user give the If the locking member is free, it automatically assumes its locking position due to the restoring force acting on it and thus blocks a movement of the actuating member.
  • valve pistol 10 comprises a pistol housing 12 which is formed by a first half-shell 14 and a second half-shell 16.
  • the gun housing 12 has an elongated housing area 18, on the front side 20 of which a liquid outlet 22 is arranged.
  • the liquid outlet 22 is designed in the form of an outlet bushing 24 which has an external thread 26.
  • a spray lance for example, can be connected to the outlet socket 24.
  • a handle 28 protrudes from the elongated housing area 18, which the user can grip around with his hand.
  • the handle 28 has an integrally connected to the elongated housing area 18 and assigned to the thumb and forefinger of the user upper end area 30 and a lower end area 32 facing away from the upper end area 30, arranged at a distance from the elongated housing area 18 and assigned to the little finger of the user.
  • a protective bar 34 extends from the lower end region 32 of the handle 28 to the front 20 of the elongated housing area 18.
  • the protective bar 34, the elongated housing area 18 and the handle 28 surround a grip opening 36 into which the user can grip the handle 28 with his fingers can intervene.
  • a valve 38 which has a valve housing 40, is arranged in the protective bracket 34 adjacent to the lower end region 30 of the handle 28.
  • the valve housing 40 has a valve inlet 42 which is integrally connected to an inlet bushing 44 protruding from the protective bracket 34.
  • the inlet socket 44 forms a liquid inlet 46 of the valve gun 10 and has an external thread 45.
  • a pressure hose can be connected to the inlet socket 44, via which the valve gun 10 can be supplied with cleaning liquid that has been pressurized by a high-pressure cleaning device.
  • the valve inlet 42 opens into a through hole 50 of the valve housing 40.
  • the through hole 50 is aligned parallel to a longitudinal axis 51 of the outlet socket 24 and extends into the lower end region 32 of the handle 28 and is at its end facing away from the lower end region 32 by means of a sealing plug 52 tightly closed.
  • a pipe socket 54 aligned obliquely to the through-bore 50 opens into the through-bore 50 at a distance from the sealing plug 52 and forms a valve outlet 56.
  • a drain line 58 connects to the valve outlet 56 and connects the valve outlet 56 to the liquid outlet 22.
  • the drainage line 58 runs within the protective bracket 34.
  • the through-bore 50 has a diameter constriction which forms a valve seat 60.
  • a valve tappet 62 is slidably mounted in the through hole 50, which protrudes from the through hole 50 with a free end 64 in the lower end region 32 of the handle 28 and which is connected in one piece to a closing body 66 within the through hole 50.
  • the closing body 66 is arranged in the through hole 50 between the closing plug 52 and the valve seat 60.
  • the valve tappet 60 has a circumferential annular groove 68 in its area directly adjoining the closing body 66. In the open position of the closing body 66, cleaning fluid can reach the valve outlet 56 from the valve inlet 42 via the annular groove 68 and the pipe socket 54. If the closing body 66 assumes its closed position, the flow connection between the valve inlet 42 and the valve outlet 56 is interrupted.
  • An actuating member 70 with an actuating body 74 and a force application element 80 fixed on the actuating body is arranged in the handle 28.
  • the actuating body 74 is mounted on the handle 28 so as to be pivotable about a first pivot axis 72 assigned to the actuating body.
  • the actuating body 74 protrudes with a contact area 76 facing away from the liquid outlet 22 from the rear side 78 of the handle 28 facing away from the liquid outlet 22.
  • the first pivot axis 72 is arranged in the lower end region 32 of the handle 28.
  • the force application element 80 is designed in the shape of a pin and is arranged at a small distance from the first pivot axis 72 on the actuating body 74.
  • the actuating body 74 forms a lever arm 75 on which both the contact area 76 and the force application element 80 are arranged. If the actuating body is pivoted about the first pivot axis 72 in the direction of the liquid outlet 22, the force application element 80 executes a movement in the same direction and, in doing so, applies the actuating force to the valve tappet 62.
  • the actuating body has a first end 77 which is associated with the thumb and forefinger of the user.
  • the distance of the force application element 80 from the first end 77 is significantly greater than the distance that the force application element 80 assumes from the first pivot axis 72.
  • the distance of the force application element 80 from the first end 77 is at least four times, in particular at least six times, the distance that the force application element 80 occupies from the first pivot axis 72.
  • the actuating member 70 is acted upon with a restoring force by a first return spring 84 assigned to the actuating member 70.
  • the actuator 70 can in its in Figure 2 shown rest position are locked.
  • a substantially L-shaped locking member 85 is mounted in the upper end region 30 of the handle 28 so as to be pivotable about a second pivot axis 86 assigned to the locking member.
  • a first leg 88 of the locking member 85 forms an actuating arm, which in the in Figure 2
  • the illustrated locking position of the locking member 85 protrudes from the front side 90 of the handle 28 facing the liquid outlet 22.
  • a second leg 92 of the locking member 85 forms a locking arm which, in the locking position of the locking member 85, rests with a free end 94 on the actuating body 74 and prevents it from pivoting.
  • the closing body 66 is displaced together with the valve tappet 62 in the direction facing away from the closing plug 52, so that the closing body 66 resumes its closed position in which it rests tightly on the valve seat 60 and thereby interrupting the flow connection between the liquid inlet 46 and the liquid outlet 22.
  • FIGS 3 and 4th a second and a third advantageous embodiment of a valve gun according to the invention are shown schematically. These embodiments are largely identical to the above with reference to FIG Figures 1 and 2 illustrated first embodiment.
  • the Figures 3 and 4th the same reference numerals are used as in Figures 1 and 2 and to avoid repetition, reference is made to the explanations given above with regard to these components.
  • valve pistol 100 differs primarily in that valve 38 is arranged in the transition region between lower end region 32 of handle 28 and protective bracket 34.
  • valve outlet 56 of the valve housing 40 in the valve gun 100 assumes a position within the handle 28.
  • the valve outlet 56 is connected to the liquid outlet 22 via an outflow line 102, a first section 104 of the outflow line 102 adjoining the valve outlet 56 being arranged in the handle 28.
  • a second section 106 of the outflow line 102 adjoins the rectilinear first section 104 at an angle, which is also rectilinear and opens into the outlet socket 24, the second section 106 being arranged in the elongated housing area 18 of the gun housing 12.
  • both the first return spring 84 and the second return spring 96 are supported on the first section 104 of the drain line 102. If the actuating member 70 of the valve pistol is moved forward in the direction of the liquid outlet 22, the first section 104 plunges into the actuating member 70.
  • the actuating member 70 of the valve gun 100 can also be derived from the in Figure 3
  • the rest position shown can be pivoted about the first pivot axis 72 in the direction of the liquid outlet 22 into a release position, the force applying element 80 of the valve gun 100 applying an actuating force to the valve tappet 62, under the action of which the valve tappet 62 together with the closing body 66 in the direction of the sealing plug 52 is moved, wherein the closing body 66 assumes its open position and cleaning liquid can flow from the liquid inlet 46 to the liquid outlet 22. If the user of the valve pistol 100 releases the actuating member 70, this automatically assumes its rest position under the action of the first return spring 84, and the closing body 66 is moved into its closed position by the pressurized cleaning fluid.
  • the actuating member 70 has an actuating body 74 which forms a one-armed lever in that the force application element 80 is arranged on the same side of the first pivot axis 72 as the contact area 76.
  • the actuating body 74 forms a lever arm 75 for this purpose , on which the contact area 76 and also the force application element 80 are arranged.
  • the force application element 80 is pivoted in the same direction as the contact area 76.
  • valve pistol 120 shown an actuating member 122 with an actuating body 124 for use, which forms a two-armed lever.
  • the actuating member 122 of the valve pistol 120 can be pivoted about a first pivot axis 126, which is arranged between a contact area 128 of the actuating member 122 protruding from the handle 28 on the rear side and a force application element 130 connected to the actuating body 124.
  • the actuating body 124 has a first lever arm 129 and a second lever arm 131.
  • the contact area 128 is arranged on the first lever arm 129, and the force application element 130 is arranged on the second lever arm 131.
  • a valve tappet 132 can be acted upon by the force application element 130 both with a compressive force and with a tensile force.
  • the force application element 130 engages in an annular groove 134 which is arranged on the free end region of the valve tappet 132 facing the actuating body 124.
  • valve pistol 120 If the user of the valve pistol 120 releases the actuating member 122, it is pivoted back into the rest position by the first return spring 84, the restoring force exerted by the first return spring 84 being transmitted via the force application element 130 to the valve stem 132 and the closing body 136, see above that the closing body 136 assumes its closed position on the valve seat 138, in which it interrupts the flow connection between the liquid inlet 46 and the liquid outlet 22.
  • the manipulation of the valve pistols 10, 100 and 120 is carried out by the user with little effort.
  • the positioning of the actuating members 70 and 122 on the rear side of the handle 28 facing away from the liquid outlet 22 contributes to this, since the recoil exerted by the cleaning liquid on the valve pistols 10, 100, 120 when the cleaning liquid is dispensed to the valve pistols 10, 100 and 120 presses against the palm of the hand of the user, so that the fingers of the user are relieved.
  • the fact that the actuation force of the force application elements 80, 130 is applied to the valve tappets 62, 132 at a distance from the upper end region 30 of the handle 28 also helps to relieve the user, because this leads to favorable force relationships.
  • the distance between the force loading elements 80 and 130 and the first end of the actuating bodies 74 and 124 facing the elongated housing area 18 is selected to be significantly greater than the distance between the force loading elements 80, 130 and the first pivot axis 72, 126.
  • the distance between the force applying elements 80, 130 and the first end of the actuating body 74, 124 is at least four times as large as the distance between the force applying elements 80, 130 and the first pivot axes 72, 126.
  • the actuating bodies 74, 124 can be pivoted about the first pivot axes 72, 126 with relatively little force, and yet relatively large actuating forces can be exerted on the valve tappets 62, 132 by the force application elements 80, 130.

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Description

Die Erfindung betrifft eine Ventilpistole für ein Hochdruckreinigungsgerät zur kontrollierten Abgabe einer Reinigungsflüssigkeit, mit einem Pistolengehäuse, das einen Handgriff aufweist mit einem dem Daumen und Zeigefinger des Benutzers zugeordneten oberen Endbereich und einem dem oberen Endbereich abgewandten unteren Endbereich, und mit einem im Pistolengehäuse im Strömungsweg zwischen einem Flüssigkeitseinlass und einem Flüssigkeitsauslass angeordneten Ventil, das einen Schließkörper aufweist, der in einer Schließstellung an einem Ventilsitz dicht anliegt und durch Verschieben eines Ventilstößels in eine Offenstellung bewegbar ist, wobei der Flüssigkeitsauslass an einer Vorderseite des Pistolengehäuses angeordnet ist, und wobei ein Betätigungsglied zum Verschieben des Ventilstößels an einer dem Flüssigkeitsauslass abgewandten Rückseite des Handgriffs angeordnet ist.The invention relates to a valve gun for a high-pressure cleaning device for the controlled dispensing of a cleaning liquid, with a gun housing which has a handle with an upper end area assigned to the thumb and forefinger of the user and a lower end area facing away from the upper end area, and with one in the gun housing in the flow path between a liquid inlet and a liquid outlet arranged valve, which has a closing body which rests tightly in a closed position on a valve seat and is movable by moving a valve tappet into an open position, wherein the liquid outlet is arranged on a front side of the gun housing, and wherein an actuating member for displacement of the valve tappet is arranged on a rear side of the handle facing away from the liquid outlet.

Mit Hilfe derartiger Ventilpistolen kann die Abgabe von Reinigungsflüssigkeit, die von einem Hochdruckreinigungsgerät unter Druck gesetzt wurde, gesteuert werden. Als Reinigungsflüssigkeit kommt vorzugsweise Wasser zum Einsatz, dem eine Reinigungschemikalie beigemischt sein kann. An den Flüssigkeitseinlass der Ventilpistole kann beispielsweise ein Druckschlauch angeschlossen werden, und an den Flüssigkeitsauslass der Ventilpistole kann beispielsweise eine Sprühlanze angeschlossen werden. Über den Druckschlauch kann der Ventilpistole unter Druck stehende Reinigungsflüssigkeit zugeführt werden, und über die Sprühlanze kann die Reinigungsflüssigkeit auf einen Gegenstand gerichtet werden.With the aid of valve pistols of this type, the delivery of cleaning fluid that has been pressurized by a high-pressure cleaning device can be controlled. The cleaning fluid used is preferably water, to which a cleaning chemical can be added. For example, a pressure hose can be connected to the liquid inlet of the valve gun, and a spray lance, for example, can be connected to the liquid outlet of the valve gun. Pressurized cleaning fluid can be fed to the valve gun via the pressure hose, and the cleaning fluid can be directed at an object via the spray lance.

Zur Steuerung der Flüssigkeitsabgabe kann der Benutzer ein Betätigungsglied der Ventilpistole betätigen und dadurch ein im Strömungsweg zwischen dem Flüssigkeitseinlass und dem Flüssigkeitsauslass angeordnetes Ventil öffnen. Das Betätigungsglied ist mechanisch mit einem Ventilstößel gekoppelt, der durch Betätigen des Betätigungsglieds verschoben werden kann und dadurch einen Schließkörper des Ventils in eine Offenstellung bewegt, in der der Schließkörper einen Abstand zu einem Ventilsitz einnimmt. In der Offenstellung des Schließkörpers steht der Flüssigkeitseinlass mit dem Flüssigkeitsauslass in Strömungsverbindung. Gibt der Benutzer das Betätigungsglied frei, so geht der Schließkörper wieder in seine Schließstellung über und unterbricht die Strömungsverbindung zwischen dem Flüssigkeitseinlass und dem Flüssigkeitsauslass.To control the dispensing of liquid, the user can actuate an actuating member of the valve pistol and thereby open a valve arranged in the flow path between the liquid inlet and the liquid outlet. The actuating member is mechanically coupled to a valve tappet which can be displaced by actuating the actuating member and thereby moves a closing body of the valve into an open position in which the closing body is at a distance from a valve seat. In the open position of the closing body, the liquid inlet is in flow connection with the liquid outlet. If the user releases the actuating member, the closing body returns to its closed position and interrupts the flow connection between the liquid inlet and the liquid outlet.

Aus dem Dokument GB 513 013 A ist eine handgesteuerte Düse bekannt, bei der ein Betätigungsglied an einem Flüssigkeitsauslass schwenkbar gelagert und über einen Kniehebel mit einem Ventilstößel gekoppelt ist. Dies erfordert einen nicht unerheblichen konstruktiven Aufwand.From the document GB 513 013 A a hand-controlled nozzle is known in which an actuating member is pivotably mounted on a liquid outlet and is coupled to a valve tappet via a toggle lever. This requires a not inconsiderable structural effort.

Aus dem Dokument DE 603 17 447 T2 ist eine Ventilpistole bekannt, bei der ein Betätigungshebel an einem zentralen Bereich des Pistolengehäuses schwenkbar gelagert und mit einem am unteren Endbereich des Handgriffs schwenkbar gelagerten Auslösehebel gekoppelt ist. Der Betätigungshebel ist ebenso wie der Auslösehebel an der dem Flüssigkeitsauslass zugewandten Vorderseite des Handgriffs angeordnet und kann vom Benutzer nach Art eines klassischen Abzughebels mit den Fingern betätigt werden. Bei länger andauernder Betätigung kann dies zu einer Ermüdung des Benutzers führen. Der Einsatz von zwei miteinander gekoppelten Hebeln macht die Ventilpistole außerdem störungsanfällig und teuer.From the document DE 603 17 447 T2 a valve pistol is known in which an actuating lever is pivotably mounted on a central region of the pistol housing and is coupled to a release lever pivotably mounted on the lower end region of the handle. The actuation lever, like the release lever, is arranged on the front of the handle facing the liquid outlet and can be actuated by the user with the fingers in the manner of a classic trigger. If the device is operated for a long time, this can lead to fatigue for the user. The use of two levers coupled to one another also makes the valve pistol prone to failure and expensive.

Aus der DE 34 31 800 A1 ist eine Ventilpistole bekannt, bei der der Flüssigkeitseinlass und auch der Flüssigkeitsauslass dem unteren Endbereich des Handgriffs benachbart angeordnet sind. Das Betätigungsglied ist als Handhebel ausgestaltet, der an der dem Flüssigkeitsauslass zugewandten Vorderseite des Handgriffs angeordnet ist und vom Benutzer mit den Fingern betätigt werden kann. Wie bereits erwähnt, kann dies bei längerer Betätigungsdauer zu einer Ermüdung des Benutzers führen.From the DE 34 31 800 A1 a valve pistol is known in which the liquid inlet and also the liquid outlet are arranged adjacent to the lower end region of the handle. The actuating member is designed as a hand lever which is arranged on the front of the handle facing the liquid outlet and can be operated by the user with his fingers. As already mentioned, this can lead to fatigue for the user if the device is operated for a longer period of time.

Eine Ventilpistole, bei der sich das Betätigungsglied an der dem Flüssigkeitsauslass abgewandten Rückseite des Handgriffs befindet, ist aus der WO 2015/086085 A1 bekannt. Die Anordnung des Betätigungsglieds an der Rückseite des Handgriffs hat den Vorteil, dass der Benutzer das Betätigungsglied mit seinem Handballen betätigen kann, wobei die Ventilpistole unter dem Einfluss des Rückstoßes der aus dem Flüssigkeitsauslass austretenden Reinigungsflüssigkeit gegen den Handballen des Benutzers gedrückt wird. Dies erleichtert die Handhabung der Ventilpistole, da die Finger des Benutzers entlastet werden. Das Betätigungsglied ist bei der aus dem Dokument WO 2015/086085 A1 bekannten Ventilpistole über einen Kopplungshebel mit dem Ventilstößel gekoppelt.A valve pistol, in which the actuating member is located on the rear side of the handle facing away from the liquid outlet, is from the WO 2015/086085 A1 known. The arrangement of the actuating member on the back of the handle has the advantage that the user can actuate the actuating member with the heel of his hand, the valve pistol being pressed against the heel of the hand of the user under the influence of the recoil of the cleaning liquid emerging from the liquid outlet. This facilitates the handling of the valve gun, since the user's fingers are relieved. The actuator is from the document WO 2015/086085 A1 known valve pistol coupled to the valve tappet via a coupling lever.

Aus dem Dokument DE 28 27 402 A1 ist eine Ventilpistole mit einem Pistolengehäuse bekannt, das einen länglichen Gehäuseabschnitt und einen Handgriff aufweist. Der Handgriff ragt von einem rückwärtigen Bereich des länglichen Gehäuseabschnitts schräg nach unten. Im länglichen Gehäuseabschnitt ist ein Ventil angeordnet, das einen Ventilstößel aufweist. Der Ventilstößel ragt mit einem Endsegment rückseitig aus dem länglichen Gehäuseabschnitt heraus. Außerhalb des Pistolengehäuses ist an der Rückseite des Handgriffs ein Auslösehebel schwenkbar gelagert, der mit einem oberen Endbereich das rückseitig aus dem länglichen Gehäuseabschnitt herausragende Endsegment des Ventilstößels umgreift und an einem starr mit diesem Endsegment verbundenen Mitnehmer anliegt. Wird der Auslösehebel vom Benutzer verschwenkt, dann drückt der Auslösehebel mit seinem oberen Endbereich gegen den Mitnehmer, so dass dieser zusammen mit dem Ventilstößel nach hinten verschoben wird.From the document DE 28 27 402 A1 a valve gun is known with a gun housing which has an elongated housing section and a handle. The handle protrudes obliquely downward from a rear region of the elongated housing section. A valve which has a valve stem is arranged in the elongated housing section. One end segment of the valve tappet protrudes from the rear of the elongated housing section. Outside the pistol housing, a release lever is pivotably mounted on the rear of the handle, the upper end of which engages around the end segment of the valve plunger protruding from the elongated housing section and rests on a driver rigidly connected to this end segment. If the release lever is pivoted by the user, then the release lever presses with its upper end area against the driver, so that the latter is displaced backwards together with the valve tappet.

Ähnlich ausgestaltete Ventilpistolen mit einem außenseitig am Pistolengehäuse gelagerten Auslösehebel, der mit seinem oberen Endbereich über einen Mitnehmer mit einem Ventilstößel zusammenwirkt, welcher in einem länglichen Gehäuseabschnitt des Pistolengehäuses angeordnet ist, sind aus den Dokumenten DE 20 2015 100 240 U1 und DE 201 16 060 U1 bekannt.Similar designed valve pistols with a release lever mounted on the outside of the pistol housing, which interacts with its upper end region via a driver with a valve tappet, which is arranged in an elongated housing section of the pistol housing, are from the documents DE 20 2015 100 240 U1 and DE 201 16 060 U1 known.

Aufgabe der vorliegenden Erfindung ist es, eine Ventilpistole der gattungsgemäßen Art derart weiterzubilden, dass sie eine einfachere konstruktive Ausgestaltung aufweist.The object of the present invention is to develop a valve pistol of the generic type in such a way that it has a simpler structural design.

Diese Aufgabe wird durch eine Ventilpistole mit den Merkmalen von Patentanspruch 1 gelöst.This object is achieved by a valve pistol with the features of patent claim 1.

Bei der erfindungsgemäßen Ventilpistole kann eine Betätigungskraft vom Betätigungsglied auf den Ventilstößel übertragen werden, ohne dass zusätzliche mechanische Kopplungselemente zum Einsatz kommen müssen. Der Ventilstößel wird hierzu im Abstand zum oberen Endbereich des Handgriffs mit der vom Betätigungsglied ausgeübten Betätigungskraft beaufschlagt.In the valve pistol according to the invention, an actuating force can be transmitted from the actuating member to the valve tappet without the need for additional mechanical coupling elements. For this purpose, the valve tappet is acted upon by the actuating force exerted by the actuating member at a distance from the upper end region of the handle.

Das Betätigungsglied weist ein an den Ventilstößel anlegbares Kraftbeaufschlagungselement auf. Über das Kraftbeaufschlagungselement kann der Ventilstößel mit der Betätigungskraft beaufschlagt werden, um den Schließkörper des Ventils in eine Offenstellung zu bewegen. Das Kraftbeaufschlagungselement kann am Ventilstößel lose anliegen.The actuating member has a force application element that can be applied to the valve tappet. The actuating force can be applied to the valve tappet via the force application element in order to move the closing body of the valve into an open position. The force application element can rest loosely on the valve tappet.

Außerdem weist das Betätigungsglied einen Betätigungskörper auf, der in einer Ruhestellung mit einem dem Flüssigkeitsauslass abgewandten Anlagebereich aus der dem Flüssigkeitsauslass abgewandten Rückseite des Handgriffs herausragt und vom Benutzer mit seinem Handballen in eine Freigabestellung bewegt werden kann, wobei das Kraftbeaufschlagungselement am Betätigungskörper angeordnet ist. Wird der Betätigungskörper vom Benutzer aus der Ruhestellung in die Freigabestellung bewegt, so übt das am Betätigungskörper angeordnete Kraftbeaufschlagungselement eine Betätigungskraft auf den Ventilstößel aus. Dies hat zur Folge, dass der Ventilstößel den Schließkörper des Ventils in die Offenstellung bewegt.In addition, the actuating member has an actuating body which, in a rest position, protrudes from the rear of the handle facing away from the liquid outlet with a contact area facing away from the liquid outlet and can be moved into a release position by the user with the ball of his hand, the force application element being arranged on the actuating body. If the actuating body is moved by the user from the rest position into the release position, the force application element arranged on the actuating body exerts an actuating force on the valve tappet. This has the consequence that the valve tappet moves the closing body of the valve into the open position.

Der Betätigungskörper ist um eine erste Schwenkachse zwischen der Ruhestellung und der Freigabestellung hin und her verschwenkbar. Der Betätigungskörper bildet einen Hebel aus, der vom Benutzer mit dem Handballen verschwenkt werden kann.The actuating body can be pivoted back and forth about a first pivot axis between the rest position and the release position. The actuator body forms a lever that can be pivoted by the user with the ball of the hand.

Die erste Schwenkachse ist im unteren Endbereich des Handgriffs angeordnet. Dies hat zur Folge, dass der Teil des Betätigungskörpers, der sich im Bereich des Daumens und Zeigefingers des Benutzers befindet, einen beachtlichen Abstand zur Schwenkachse einnimmt. Dadurch kann der Benutzer den Betätigungskörper mit eher geringer Anstrengung aus der Ruhestellung in die Freigabestellung verschwenken.The first pivot axis is arranged in the lower end area of the handle. This has the consequence that the part of the actuating body which is located in the area of the thumb and forefinger of the user occupies a considerable distance from the pivot axis. As a result, the user can pivot the actuating body from the rest position into the release position with rather little effort.

Das Ventil ist zumindest teilweise im unteren Endbereich des Handgriffs und/oder in einem sich an den unteren Endbereich anschließenden Schutzbügel des Pistolengehäuses angeordnet. Die Ventilpistole kann zwischen dem Schutzbügel und dem Handgriff eine Grifföffnung ausbilden, in die der Benutzer beim Umgreifen des Handgriffs mit seinen Fingern eingreifen kann. Das Ventil kann zumindest teilweise, vorzugsweise vollständig, im unteren Endbereich des Handgriffs oder beispielsweise auch in einem Übergangsbereich zwischen dem unteren Endbereich des Handgriffs und dem Schutzbügel oder aber vollständig im Schutzbügel positioniert sein.The valve is arranged at least partially in the lower end area of the handle and / or in a protective bracket of the pistol housing that adjoins the lower end area. The valve pistol can form a grip opening between the protective bracket and the handle, into which the user can reach with his fingers when grasping the handle. The valve can be positioned at least partially, preferably completely, in the lower end area of the handle or, for example, also in a transition area between the lower end area of the handle and the protective bracket or completely in the protective bracket.

Bevorzugt ist der Ventilstößel vom Betätigungsglied in Richtung auf den unteren Endbereich des Handgriffs versetzt zum oberen Endbereich mit einer Betätigungskraft beaufschlagbar.The valve tappet can preferably be acted upon with an actuating force by the actuating member in the direction of the lower end area of the handle offset to the upper end area.

Es kann vorgesehen sein, dass das Betätigungsglied den Ventilstößel im unteren Endbereich des Handgriffs oder im Bereich eines Schutzbügels des Pistolengehäuses mit der Betätigungskraft beaufschlagt. Wie bereits erwähnt, kann die Ventilpistole zwischen dem Schutzbügel und dem Handgriff eine Grifföffnung ausbilden, in die der Benutzer beim Umgreifen des Handgriffs mit seinen Fingern eingreifen kann.It can be provided that the actuating member applies the actuating force to the valve tappet in the lower end area of the handle or in the area of a protective bracket of the pistol housing. As already mentioned, the valve pistol can form a grip opening between the protective bracket and the handle, into which the user can reach with his fingers when grasping the handle.

Die Übertragung der Betätigungskraft vom Betätigungsglied auf den Ventilstößel in einem vom oberen Endbereich des Handgriffs versetzten Bereich des Pistolengehäuses, insbesondere im unteren Bereich des Handgriffs oder im Bereich des Schutzbügels, ermöglicht in Kombination mit der Anordnung des Betätigungsglieds an der Rückseite des Handgriffs eine konstruktiv einfache und störungsunanfällige Ausgestaltung der Ventilpistole, wobei dennoch eine ermüdungsarme Bedienung möglich ist.The transmission of the actuating force from the actuating element to the valve stem in an area of the pistol housing offset from the upper end area of the handle, in particular in the lower area of the handle or in the area of the protective bar, enables, in combination with the arrangement of the actuating element on the rear of the handle, a structurally simple and easy design of the valve pistol that is not susceptible to malfunctions, although fatigue-free operation is possible.

Der Ventilstößel kann starr mit dem Schließkörper des Ventils verbunden sein. Insbesondere kann vorgesehen sein, dass der Ventilstößel einstückig mit dem Schließkörper verbunden ist, so dass der Ventilstößel zusammen mit dem Schließkörper ein gemeinsames Bauteil ausbildet, das beispielsweise aus Metall gefertigt sein kann.The valve tappet can be rigidly connected to the closing body of the valve. In particular, it can be provided that the valve tappet is integrally connected to the closing body, so that the valve tappet together with the closing body forms a common component that can be made of metal, for example.

Der Schließkörper kann zum Beispiel kugelförmig ausgestaltet sein oder einen Konus ausbilden, der vom Ventilstößel aus einer Schließstellung in eine Offenstellung bewegt werden kann.The closing body can be designed, for example, spherical or form a cone which can be moved by the valve stem from a closed position into an open position.

Das Ventil weist bevorzugt ein Ventilgehäuse auf mit einem Ventileingang und einem Ventilausgang, wobei im Ventilgehäuse der Ventilsitz und der Schließkörper angeordnet sind und der Ventilausgang über eine Abflussleitung mit dem Flüssigkeitsauslass der Ventilpistole in Strömungsverbindung steht. Bei einer derartigen Ausgestaltung ist im Pistolengehäuse eine Abflussleitung angeordnet, über die die Reinigungsflüssigkeit vom Ventilausgang zum Flüssigkeitsauslass des Pistolengehäuses strömen kann.The valve preferably has a valve housing with a valve inlet and a valve outlet, the valve seat and the closing body being arranged in the valve housing and the valve outlet being in flow connection with the liquid outlet of the valve gun via a drain line. In such a configuration, a drain line is arranged in the gun housing, via which the cleaning liquid can flow from the valve outlet to the liquid outlet of the gun housing.

Es kann vorgesehen sein, dass zumindest ein Abschnitt der Abflussleitung im Schutzbügel des Pistolengehäuses angeordnet ist.It can be provided that at least a section of the drain line is arranged in the protective bracket of the gun housing.

Alternativ oder ergänzend kann vorgesehen sein, dass zumindest ein Abschnitt der Abflussleitung im Handgriff des Pistolengehäuses angeordnet ist.Alternatively or in addition, it can be provided that at least a section of the drain line is arranged in the handle of the pistol housing.

Insbesondere kann vorgesehen sein, dass sich ein Abschnitt der Abflussleitung vom Ventilausgang bis zum oberen Endbereich des Handgriffs erstreckt. An diesen Leitungsabschnitt kann sich ein weiterer Leitungsabschnitt der Abflussleitung anschließen, der innerhalb des Pistolengehäuses verläuft.In particular, it can be provided that a section of the drain line extends from the valve outlet to the upper end area of the handle. A further line section of the drainage line, which runs inside the gun housing, can connect to this line section.

Bevorzugt ist mindestens ein Abschnitt der Abflussleitung als Rohrstück ausgestaltet.At least one section of the drain line is preferably designed as a pipe section.

Das Kraftbeaufschlagungselement kann beispielsweise in Form eines Nockens, eines Vorsprungs, eines Anschlags oder eines Mitnehmers ausgestaltet sein, oder beispielsweise in Form einer Aufnahme, in die der Ventilstößel mit einem dem Schließkörper abgewandten Ende eintaucht.The force application element can be designed, for example, in the form of a cam, a projection, a stop or a driver, or, for example, in the form of a receptacle into which the valve tappet dips with an end facing away from the closing body.

Das Kraftbeaufschlagungselement ist bei einer bevorzugten Ausgestaltung der Erfindung einstückig mit dem Betätigungskörper verbunden. Es kann beispielsweise vorgesehen sein, dass das Kraftbeaufschlagungselement zusammen mit dem Betätigungskörper ein einteiliges Kunststoffformteil ausbildet.In a preferred embodiment of the invention, the force application element is connected in one piece to the actuating body. It can be provided, for example, that the force application element forms a one-piece plastic molded part together with the actuating body.

Alternativ kann vorgesehen sein, dass das Kraftbeaufschlagungselement ein separates Bauelement ausbildet, das am Betätigungskörper festgelegt ist. Das Kraftbeaufschlagungselement kann beispielsweise in Form eines Stifts ausgestaltet sein, der am Betätigungskörper festgelegt ist.Alternatively, it can be provided that the force application element forms a separate component that is fixed to the actuating body. The force application element can for example be designed in the form of a pin which is fixed on the actuating body.

Das Kraftbeaufschlagungselement kann beispielsweise in einer hülsenförmigen Aufnahme des Betätigungskörpers gehalten sein, insbesondere kann das Kraftbeaufschlagungselement in die hülsenförmige Aufnahme eingepresst sein.The force application element can for example be held in a sleeve-shaped receptacle of the actuating body, in particular the force application element can be pressed into the sleeve-shaped receptacle.

Bevorzugt ist das Kraftbeaufschlagungselement aus Metall gefertigt.The force application element is preferably made of metal.

Von Vorteil ist es, wenn das Kraftbeaufschlagungselement am Betätigungskörper justierbar gehalten ist.It is advantageous if the force application element is held adjustably on the actuating body.

Bei einer vorteilhaften Ausführungsform der Erfindung bildet der Betätigungskörper einen Hebelarm aus, an dem der in der Ruhestellung aus der Rückseite des Handgriffs herausragende Anlagebereich und das Kraftbeaufschlagungselement angeordnet sind. Bei einer derartigen Ausgestaltung ist der Betätigungskörper in Form eines einarmigen Hebels ausgestaltet. Der Betätigungskörper bildet einen Hebelarm aus, an dem sowohl der Anlagebereich als auch das Kraftbeaufschlagungselement angeordnet sind. Wird der Betätigungskörper aus der Ruhestellung nach vorne in Richtung auf den Flüssigkeitsauslass in die Freigabestellung verschwenkt, so wird das Kraftbeaufschlagungselement in dieselbe Richtung verschwenkt und übt auf den Ventilstößel eine Druckkraft aus. Der Schließkörper wird dadurch vom Ventilstößel in eine dem Handgriff abgewandte Richtung bewegt, wobei er vom Ventilsitz abhebt und die Strömungsverbindung zwischen dem Flüssigkeitseinlass und dem Flüssigkeitsauslass freigibt.In an advantageous embodiment of the invention, the actuating body forms a lever arm on which the contact area protruding from the rear of the handle in the rest position and the force application element are arranged. In such a configuration, the actuating body is designed in the form of a one-armed lever. The actuating body forms a lever arm on which both the contact area and the force application element are arranged. If the actuating body is pivoted forwards from the rest position in the direction of the liquid outlet into the release position, the force application element is pivoted in the same direction and exerts a pressure force on the valve tappet. The closing body is thereby moved by the valve tappet in a direction facing away from the handle, lifting off the valve seat and releasing the flow connection between the liquid inlet and the liquid outlet.

Alternativ kann vorgesehen sein, dass der Betätigungskörper einen ersten Hebelarm und einen zweiten Hebelarm ausbildet, wobei der in der Ruhestellung rückseitig aus dem Handgriff herausragende Anlagebereich des Betätigungskörpers am ersten Hebelarm angeordnet ist und wobei das Kraftbeaufschlagungselement am zweiten Hebelarm angeordnet ist. Bei einer derartigen Ausgestaltung ist der Betätigungskörper in Form eines zweiarmigen Hebels ausgestaltet. Die erste Schwenkachse ist zwischen dem Kraftbeaufschlagungselement und dem Anlagebereich angeordnet. Wird der Betätigungskörper nach vorne in Richtung auf den Flüssigkeitsauslass verschwenkt, so wird das Kraftbeaufschlagungselement in die entgegengesetzte Richtung verschwenkt und übt auf den Ventilstößel eine Zugkraft aus. Der Schließkörper wird dadurch vom Ventilstößel in eine dem Handgriff zugewandte Richtung bewegt, wobei er vom Ventilsitz abhebt und die Strömungsverbindung zwischen dem Flüssigkeitseinlass und dem Flüssigkeitsauslass freigibt.Alternatively, it can be provided that the actuating body forms a first lever arm and a second lever arm, the contact area of the actuating body protruding from the rear of the handle in the rest position being arranged on the first lever arm and the force application element being arranged on the second lever arm. In such a configuration, the actuating body is designed in the form of a two-armed lever. The first pivot axis is arranged between the force application element and the contact area. If the actuating body is pivoted forwards in the direction of the liquid outlet, the force application element is pivoted in the opposite direction and exerts a tensile force on the valve tappet. The closing body is thereby moved by the valve tappet in a direction facing the handle, lifting off the valve seat and releasing the flow connection between the liquid inlet and the liquid outlet.

Günstig ist es, wenn der Betätigungskörper ein dem Daumen und dem Zeigefinger des Benutzers zugeordnetes erstes Ende aufweist, wobei der Abstand des Kraftbeaufschlagungselements vom ersten Ende mindestens das Vierfache des Abstands beträgt, den das Kraftbeaufschlagungselement zur ersten Schwenkachse einnimmt. Eine derartige Ausgestaltung ergibt sehr vorteilhafte Hebelverhältnisse, so dass der Benutzer den Betätigungskörper mit verhältnismäßig geringem Kraftaufwand um die erste Schwenkachse verschwenken kann und dennoch vom Kraftbeaufschlagungselement eine erhebliche Betätigungskraft auf den Ventilstößel ausgeübt wird.It is favorable if the actuating body has a first end associated with the thumb and forefinger of the user, the distance between the force applying element and the first end being at least four times the distance between the force applying element and the first pivot axis. Such a configuration results in very advantageous lever ratios, so that the user can pivot the actuating body about the first pivot axis with relatively little effort and nevertheless a considerable actuating force is exerted on the valve tappet by the force application element.

Von Vorteil ist es, wenn der Schließkörper durch Bewegen des Betätigungskörpers aus der Freigabestellung in die Ruhestellung mit einer Schließkraft in Richtung auf den Ventilsitz beaufschlagbar ist. Bei einer derartigen Ausgestaltung kann vom Betätigungskörper nicht nur eine Betätigungskraft zum Öffnen des Ventils ausgeübt werden, sondern vom Betätigungskörper kann auch eine Betätigungskraft zum Schließen des Ventils ausgeübt werden. Wird der Betätigungskörper aus der Ruhestellung in die Freigabestellung bewegt, so kann über das Kraftbeaufschlaunselement eine Betätiqunqskraft auf den Ventilstößel ausgeübt werden, so dass der Ventilstößel den Schließkörper in die Offenstellung bewegt. Wird der Betätigungskörper aus der Freigabestellung in die Ruhestellung bewegt, so kann - vorzugsweise wieder über das Kraftbeaufschlagungselement - auf den Ventilstößel eine derartige Betätigungskraft ausgeübt werden, dass der Ventilstößel den Schließkörper in die Schließstellung bewegt.It is advantageous if the closing body can be acted upon by a closing force in the direction of the valve seat by moving the actuating body from the release position into the rest position. In such a configuration, not only can the actuating body exert an actuating force to open the valve, but the actuating body can also exert an actuating force to close the valve. If the actuating body is moved from the rest position into the release position, an actuating force can be exerted on the valve stem via the force application element be exercised so that the valve stem moves the closing body into the open position. If the actuating body is moved from the release position into the rest position, an actuating force can be exerted on the valve tappet, preferably again via the force application element, that the valve tappet moves the closing body into the closed position.

Günstigerweise umfasst die Ventilpistole eine dem Betätigungskörper zugeordnete Rückstellfeder, die den Betätigungskörper mit einer Rückstellkraft in Richtung auf die Ruhestellung beaufschlagt. Bei einer derartigen Ausgestaltung kann der Benutzer den Betätigungskörper entgegen der von der Rückstellfeder ausgeübten Rückstellkraft aus der Ruhestellung in die Freigabestellung bewegen. Gibt der Benutzer den Betätigungskörper frei, so wird dieser von der dem Betätigungskörper zugeordneten Rückstellfeder zurück in die Ruhestellung bewegt.The valve pistol favorably comprises a restoring spring assigned to the actuating body, which acts on the actuating body with a restoring force in the direction of the rest position. In such a configuration, the user can move the actuating body from the rest position into the release position against the restoring force exerted by the restoring spring. If the user releases the actuating body, it is moved back into the rest position by the return spring assigned to the actuating body.

Bevorzugt ist die beim Übergang von der Freigabestellung in die Ruhestellung von der Rückstellfeder auf den Betätigungskörper ausgeübte Rückstellkraft über das Kraftbeaufschlagungselement auf den Ventilstößel übertragbar, so dass dieser den Schließkörper in seine Schließstellung zurück bewegt.Preferably, the restoring force exerted by the restoring spring on the actuating body during the transition from the release position to the rest position can be transmitted to the valve stem via the force application element, so that it moves the closing body back into its closed position.

Alternativ oder ergänzend kann vorgesehen sein, dass der Schließkörper entgegen dem auf ihn einwirkenden Druck der Reinigungsflüssigkeit aus der Schließstellung in die Offenstellung bewegbar ist. Entfällt die über den Ventilstößel auf den Schließkörper ausgeübte Betätigungskraft, so nimmt der Schließkörper aufgrund des auf ihn einwirkenden Druckes der Reinigungsflüssigkeit selbsttätig seine Schließstellung wieder ein.Alternatively or in addition, it can be provided that the closing body can be moved from the closed position into the open position against the pressure of the cleaning fluid acting on it. If the actuating force exerted on the closing body via the valve tappet does not apply, the closing body automatically assumes its closed position again due to the pressure of the cleaning fluid acting on it.

Günstig ist es, wenn das Ventil eine Schließfeder aufweist, die den Schließkörper mit einer Schließkraft beaufschlagt. Bei einer derartigen Ausgestaltung erfolgt eine Bewegung des Schließkörpers aus der Schließstellung in die Offenstellung entgegen der Wirkung der Schließfeder. Der Ventilstößel ist bei einer derartigen Ausgestaltung vom Betätigungsglied mit einer Betätigungskraft zum Öffnen des Ventils beaufschlagbar, die größer ist als die von der Schließfeder auf den Schließkörper ausgeübte Schließkraft. Entfällt die Betätigungskraft des Betätigungsglieds, so nimmt der Schließkörper unter der Wirkung der Schließfeder selbsttätig seine Schließstellung ein.It is favorable if the valve has a closing spring which applies a closing force to the closing body. In such a configuration, the closing body moves from the closed position into the open position counter to the action of the closing spring. In such a configuration, the valve tappet is from the actuating member with an actuating force can be acted upon to open the valve, which is greater than the closing force exerted by the closing spring on the closing body. If the actuating force of the actuating member is omitted, the closing body automatically assumes its closed position under the action of the closing spring.

Bei einer vorteilhaften Ausgestaltung der Erfindung weist die Ventilpistole ein zwischen einer sperrenden Stellung und einer entsperrenden Stellung hin und her bewegbares Arretierungsglied auf zum Arretieren des Betätigungsglieds. Mit Hilfe des Arretierungsglieds kann eine unbeabsichtigte Bewegung des Betätigungsglieds verhindert werden. Nimmt das Arretierungsglied seine sperrende Stellung ein, so arretiert es das Betätigungsglied, so dass das Betätigungsglied relativ zum Pistolengehäuse nicht bewegt werden kann. Nimmt das Arretierungsglied seine entsperrende Stellung ein, so ist das Betätigungsglied relativ zum Pistolengehäuse bewegbar.In an advantageous embodiment of the invention, the valve pistol has a locking member that can be moved back and forth between a locking position and an unlocking position for locking the actuating member. With the aid of the locking member, unintentional movement of the actuating member can be prevented. If the locking member assumes its blocking position, it locks the actuating member so that the actuating member cannot be moved relative to the gun housing. If the locking member is in its unlocking position, the actuating member can be moved relative to the gun housing.

Von besonderem Vorteil ist es, wenn das Arretierungsglied an der dem Flüssigkeitsauslass zugewandten Vorderseite des Handgriffs angeordnet ist. Umgreift der Benutzer mit seiner Hand den Handgriff des Pistolengehäuses, so kann er intuitiv das an der Vorderseite des Handgriffs angeordnete Arretierungsglied aus der sperrenden Stellung in die entsperrende Stellung bewegen, so dass der Benutzer anschließend das Betätigungsglied bewegen kann, um den Ventilstößel mit einer Betätigungskraft zum Öffnen des Ventils zu beaufschlagen.It is particularly advantageous if the locking member is arranged on the front of the handle facing the liquid outlet. If the user grasps the handle of the pistol housing with his hand, he can intuitively move the locking member arranged on the front of the handle from the locking position to the unlocking position, so that the user can then move the actuating member to actuate the valve tappet with an actuating force To pressurize opening of the valve.

Es kann vorgesehen sein, dass das Arretierungsglied am Pistolengehäuse verschiebbar gelagert ist. Beispielsweise kann das Arretierungsglied linear verschiebbar gelagert sein.It can be provided that the locking member is slidably mounted on the gun housing. For example, the locking member can be mounted so as to be linearly displaceable.

Bei einer vorteilhaften Ausgestaltung der Erfindung ist das Arretierungsglied um eine dem Arretierungsglied zugeordnete Schwenkachse verschwenkbar gelagert. Dies ermöglicht eine konstruktiv besonders einfache Ausgestaltung der Ventilpistole.In an advantageous embodiment of the invention, the locking member is mounted pivotably about a pivot axis assigned to the locking member. This enables a particularly simple design of the valve pistol.

Die dem Arretierungsglied zugeordnete Schwenkachse ist günstigerweise parallel zu der dem Betätigungsglied zugeordneten ersten Schwenkachse ausgerichtet.The pivot axis assigned to the locking member is advantageously aligned parallel to the first pivot axis assigned to the actuating member.

Besonders vorteilhaft ist es, wenn die dem Arretierungsglied zugeordnete Schwenkachse im oberen Endbereich des Handgriffs oder in einem dem oberen Endbereich des Handgriffs benachbarten Bereich des Pistolengehäuses angeordnet ist. Umgreift der Benutzer mit Daumen und Zeigefinger den oberen Endbereich des Handgriffs, so kann er gleichzeitig das Arretierungsglied aus der sperrenden Stellung in die entsperrende Stellung verschwenken. Dies ermöglicht eine besonders einfache Handhabung der Ventilpistole.It is particularly advantageous if the pivot axis assigned to the locking member is arranged in the upper end area of the handle or in an area of the pistol housing adjacent to the upper end area of the handle. If the user grasps the upper end area of the handle with his thumb and forefinger, he can simultaneously pivot the locking member from the locking position into the unlocking position. This enables particularly simple handling of the valve pistol.

Bei einer vorteilhaften Ausführungsform der Erfindung weist das Arretierungsglied einen Betätigungsarm und einen Arretierungsarm auf, wobei der Betätigungsarm in der sperrenden Stellung des Arretierungsglieds aus der dem Flüssigkeitsauslass zugewandten Vorderseite des Handgriffs herausragt und der Arretierungsarm in der sperrenden Stellung des Arretierungsglieds eine Bewegung des Betätigungsglieds blockiert. Der Arretierungsarm kann in der sperrenden Stellung des Arretierungsglieds beispielsweise mit seinem freien Ende am Betätigungsglied anliegen oder einen geringen Abstand zum Betätigungsglied einnehmen, so dass dieses vom Benutzer nicht merklich bewegt werden kann.In an advantageous embodiment of the invention, the locking member has an actuating arm and a locking arm, the actuating arm protruding from the front of the handle facing the liquid outlet in the locking position of the locking member and the locking arm blocking a movement of the actuating member in the locking position of the locking member. In the locking position of the locking member, the locking arm can, for example, rest with its free end on the actuating member or occupy a small distance from the actuating member so that the user cannot noticeably move it.

Der Arretierungsarm und der Betätigungsarm sind günstigerweise im Winkel zueinander ausgerichtet.The locking arm and the actuating arm are favorably oriented at an angle to one another.

Es kann beispielsweise vorgesehen sein, dass das Arretierungsglied L-förmig ausgebildet ist, wobei der Betätigungsarm einen ersten Schenkel und der Arretierungsarm einen zweiten Schenkel des Arretierungsglieds ausbildet.It can be provided, for example, that the locking member is L-shaped, the actuating arm forming a first leg and the locking arm forming a second leg of the locking member.

Von Vorteil ist es, wenn die Ventilpistole eine dem Arretierungsglied zugeordnete Rückstellfeder aufweist, die das Arretierungsglied mit einer Rückstellkraft in Richtung auf die sperrende Stellung beaufschlagt. Gibt der Benutzer das Arretierungsglied frei, so nimmt dieses aufgrund der auf ihn einwirkenden Rückstellkraft selbsttätig seine sperrende Stellung ein und blockiert damit eine Bewegung des Betätigungsglieds.It is advantageous if the valve pistol has a return spring which is assigned to the locking element and which acts on the locking element with a restoring force in the direction of the blocking position. Does the user give the If the locking member is free, it automatically assumes its locking position due to the restoring force acting on it and thus blocks a movement of the actuating member.

Die nachfolgende Beschreibung vorteilhafter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:

Figur 1:
eine schematische Vorderansicht einer ersten vorteilhaften Ausführungsform einer Ventilpistole;
Figur 2:
eine Schnittansicht der Ventilpistole längs der Linie 2-2 in Figur 1;
Figur 3:
eine Schnittansicht entsprechend Figur 2 einer zweiten vorteilhaften Ausführungsform einer Ventilpistole;
Figur 4:
eine Schnittansicht entsprechend Figur 2 einer dritten vorteilhaften Ausführungsform einer Ventilpistole.
The following description of advantageous embodiments of the invention is used in conjunction with the drawing to provide a more detailed explanation. Show it:
Figure 1:
a schematic front view of a first advantageous embodiment of a valve gun;
Figure 2:
FIG. 2 is a sectional view of the valve gun taken along line 2-2 in FIG Figure 1 ;
Figure 3:
a sectional view accordingly Figure 2 a second advantageous embodiment of a valve gun;
Figure 4:
a sectional view accordingly Figure 2 a third advantageous embodiment of a valve gun.

In den Figuren 1 und 2 ist eine erste vorteilhafte Ausführungsform einer erfindungsgemäßen Ventilpistole schematisch dargestellt und insgesamt mit dem Bezugszeichen 10 belegt. Die Ventilpistole 10 umfasst ein Pistolengehäuse 12, das von einer ersten Halbschale 14 und einer zweiten Halbschale 16 gebildet wird. Das Pistolengehäuse 12 weist einen länglichen Gehäusebereich 18 auf, an dessen Vorderseite 20 ein Flüssigkeitsauslass 22 angeordnet ist. Der Flüssigkeitsauslass 22 ist in Form einer Auslassbuchse 24 ausgebildet, die ein Außengewinde 26 trägt. An die Auslassbuchse 24 kann beispielsweise eine Sprühlanze angeschlossen werden.In the Figures 1 and 2 a first advantageous embodiment of a valve pistol according to the invention is shown schematically and denoted overall by the reference numeral 10. The valve pistol 10 comprises a pistol housing 12 which is formed by a first half-shell 14 and a second half-shell 16. The gun housing 12 has an elongated housing area 18, on the front side 20 of which a liquid outlet 22 is arranged. The liquid outlet 22 is designed in the form of an outlet bushing 24 which has an external thread 26. A spray lance, for example, can be connected to the outlet socket 24.

Im Abstand zum Flüssigkeitsauslass 22 steht vom länglichen Gehäusebereich 18 ein Handgriff 28 ab, den der Benutzer mit der Hand umgreifen kann. Der Handgriff 28 weist einen einstückig mit dem länglichen Gehäusebereich 18 verbundenen und dem Daumen und dem Zeigefinger des Benutzers zugeordneten oberen Endbereich 30 und einen dem oberen Endbereich 30 abgewandten, im Abstand zum länglichen Gehäusebereich 18 angeordneten und dem kleinen Finger des Benutzers zugeordneten unteren Endbereich 32 auf. Ein Schutzbügel 34 erstreckt sich vom unteren Endbereich 32 des Handgriffs 28 bis zur Vorderseite 20 des länglichen Gehäusebereichs 18. Der Schutzbügel 34, der längliche Gehäusebereich 18 und der Handgriff 28 umgeben eine Grifföffnung 36, in die der Benutzer beim Umgreifen des Handgriffs 28 mit seinen Fingern eingreifen kann.At a distance from the liquid outlet 22, a handle 28 protrudes from the elongated housing area 18, which the user can grip around with his hand. The handle 28 has an integrally connected to the elongated housing area 18 and assigned to the thumb and forefinger of the user upper end area 30 and a lower end area 32 facing away from the upper end area 30, arranged at a distance from the elongated housing area 18 and assigned to the little finger of the user. A protective bar 34 extends from the lower end region 32 of the handle 28 to the front 20 of the elongated housing area 18. The protective bar 34, the elongated housing area 18 and the handle 28 surround a grip opening 36 into which the user can grip the handle 28 with his fingers can intervene.

Dem unteren Endbereich 30 des Handgriffs 28 benachbart ist im Schutzbügel 34 ein Ventil 38 angeordnet, das ein Ventilgehäuse 40 aufweist. Das Ventilgehäuse 40 weist einen Ventileingang 42 auf, der einstückig mit einer aus dem Schutzbügel 34 herausragenden Einlassbuchse 44 verbunden ist. Die Einlassbuchse 44 bildet einen Flüssigkeitseinlass 46 der Ventilpistole 10 aus und trägt ein Außengewinde 45. An die Einlassbuchse 44 kann beispielsweise ein Druckschlauch angeschlossen werden, über den der Ventilpistole 10 Reinigungsflüssigkeit zugeführt werden kann, die von einem Hochdruckreinigungsgerät unter Druck gesetzt wurde.A valve 38, which has a valve housing 40, is arranged in the protective bracket 34 adjacent to the lower end region 30 of the handle 28. The valve housing 40 has a valve inlet 42 which is integrally connected to an inlet bushing 44 protruding from the protective bracket 34. The inlet socket 44 forms a liquid inlet 46 of the valve gun 10 and has an external thread 45. For example, a pressure hose can be connected to the inlet socket 44, via which the valve gun 10 can be supplied with cleaning liquid that has been pressurized by a high-pressure cleaning device.

Der Ventileingang 42 mündet in eine Durchgangsbohrung 50 des Ventilgehäuses 40. Die Durchgangsbohrung 50 ist parallel zu einer Längsachse 51 der Auslassbuchse 24 ausgerichtet und erstreckt sich bis in den unteren Endbereich 32 des Handgriffs 28 und ist an ihrem dem unteren Endbereich 32 abgewandten Ende mittels eines Verschlussstopfens 52 dicht verschlossen. Ein schräg zur Durchgangsbohrung 50 ausgerichteter Rohrstutzen 54 mündet im Abstand zum Verschlussstopfen 52 in die Durchgangsbohrung 50 und bildet einen Ventilausgang 56 aus. An den Ventilausgang 56 schließt sich eine Abflussleitung 58 an, die den Ventilausgang 56 mit dem Flüssigkeitsauslass 22 verbindet. Die Abflussleitung 58 verläuft innerhalb des Schutzbügels 34.The valve inlet 42 opens into a through hole 50 of the valve housing 40. The through hole 50 is aligned parallel to a longitudinal axis 51 of the outlet socket 24 and extends into the lower end region 32 of the handle 28 and is at its end facing away from the lower end region 32 by means of a sealing plug 52 tightly closed. A pipe socket 54 aligned obliquely to the through-bore 50 opens into the through-bore 50 at a distance from the sealing plug 52 and forms a valve outlet 56. A drain line 58 connects to the valve outlet 56 and connects the valve outlet 56 to the liquid outlet 22. The drainage line 58 runs within the protective bracket 34.

Zwischen dem Ventileingang 42 und dem Rohrstutzen 54 weist die Durchgangsbohrung 50 eine Durchmesserverengung auf, die einen Ventilsitz 60 ausbildet. In der Durchgangsbohrung 50 ist ein Ventilstößel 62 verschiebbar gelagert, der mit einem freien Ende 64 im unteren Endbereich 32 des Handgriffs 28 aus der Durchgangsbohrung 50 herausragt und der innerhalb der Durchgangsbohrung 50 einstückig mit einem Schließkörper 66 verbunden ist. Der Schließkörper 66 ist in der Durchgangsbohrung 50 zwischen dem Verschlussstopfen 52 und dem Ventilsitz 60 angeordnet. Durch Verschieben des Ventilstößels 62 kann der Schließkörper 66 aus einer in Figur 2 dargestellten Schließstellung, in der er dicht am Ventilsitz 60 anliegt, in Richtung des Verschlussstopfens 52 in eine Offenstellung bewegt werden, in der er einen Abstand zum Ventilsitz 60 einnimmt. Der Ventilstößel 60 weist in seinem sich unmittelbar an den Schließkörper 66 anschließenden Bereich eine umlaufende Ringnut 68 auf. In der Offenstellung des Schließkörpers 66 kann Reinigungsflüssigkeit vom Ventileingang 42 über die Ringnut 68 und den Rohrstutzen 54 zum Ventilausgang 56 gelangen. Nimmt der Schließkörper 66 seine Schließstellung ein, so wird die Strömungsverbindung zwischen dem Ventileingang 42 und dem Ventilausgang 56 unterbrochen.Between the valve inlet 42 and the pipe socket 54, the through-bore 50 has a diameter constriction which forms a valve seat 60. A valve tappet 62 is slidably mounted in the through hole 50, which protrudes from the through hole 50 with a free end 64 in the lower end region 32 of the handle 28 and which is connected in one piece to a closing body 66 within the through hole 50. The closing body 66 is arranged in the through hole 50 between the closing plug 52 and the valve seat 60. By moving the valve tappet 62, the closing body 66 can be made from an in Figure 2 The closed position shown, in which it rests tightly on the valve seat 60, can be moved in the direction of the closure plug 52 into an open position in which it occupies a distance from the valve seat 60. The valve tappet 60 has a circumferential annular groove 68 in its area directly adjoining the closing body 66. In the open position of the closing body 66, cleaning fluid can reach the valve outlet 56 from the valve inlet 42 via the annular groove 68 and the pipe socket 54. If the closing body 66 assumes its closed position, the flow connection between the valve inlet 42 and the valve outlet 56 is interrupted.

Im Handgriff 28 ist ein Betätigungsglied 70 angeordnet mit einem Betätigungskörper 74 und einem am Betätigungskörper festgelegten Kraftbeaufschlagungselement 80. Der Betätigungskörper 74 ist am Handgriff 28 um eine dem Betätigungskörper zugeordnete erste Schwenkachse 72 verschwenkbar gelagert. Der Betätigungskörper 74 ragt mit einem dem Flüssigkeitsauslass 22 abgewandten Anlagebereich 76 aus der dem Flüssigkeitsauslass 22 abgewandten Rückseite 78 des Handgriffs 28 heraus. Die erste Schwenkachse 72 ist im unteren Endbereich 32 des Handgriffs 28 angeordnet. Das Kraftbeaufschlagungselement 80 ist stiftförmig ausgestaltet und in geringem Abstand zur ersten Schwenkachse 72 am Betätigungskörper 74 angeordnet. Es ist in einer Aufnahmehülse 82 des Betätigungskörpers 74 festgelegt und liegt mit seinem aus der Aufnahmehülse 82 herausragenden Ende am freien Ende 74 des Ventilstößels 62 an. Wird das Betätigungsglied 70 um die erste Schwenkachse 72 in Richtung auf den Flüssigkeitsauslass 22 verschwenkt, so übt das Kraftbeaufschlagungselement 80 eine Betätigungskraft auf den Ventilstößel 62 aus, so dass dieser innerhalb der Durchgangsbohrung 50 des Ventilgehäuses 40 in Richtung auf den Verschlussstopfen 52 verschoben wird und sich dadurch der Schließkörper 66 vom Ventilsitz 60 abhebt.An actuating member 70 with an actuating body 74 and a force application element 80 fixed on the actuating body is arranged in the handle 28. The actuating body 74 is mounted on the handle 28 so as to be pivotable about a first pivot axis 72 assigned to the actuating body. The actuating body 74 protrudes with a contact area 76 facing away from the liquid outlet 22 from the rear side 78 of the handle 28 facing away from the liquid outlet 22. The first pivot axis 72 is arranged in the lower end region 32 of the handle 28. The force application element 80 is designed in the shape of a pin and is arranged at a small distance from the first pivot axis 72 on the actuating body 74. It is fixed in a receiving sleeve 82 of the actuating body 74 and its end protruding from the receiving sleeve 82 rests on the free end 74 of the valve stem 62. If the actuating member 70 is pivoted about the first pivot axis 72 in the direction of the liquid outlet 22, the force application element 80 exerts an actuating force on the valve tappet 62 so that it is inside the through-hole 50 of the valve housing 40 Is shifted in the direction of the sealing plug 52 and thereby the closing body 66 lifts off the valve seat 60.

Der Betätigungskörper 74 bildet einen Hebelarm 75 aus, an dem sowohl der Anlagebereich 76 als auch das Kraftbeaufschlagungselement 80 angeordnet sind. Wird der Betätigungskörper um die erste Schwenkachse 72 in Richtung auf den Flüssigkeitsauslass 22 verschwenkt, so führt das Kraftbeaufschlagungselement 80 eine gleichgerichtete Bewegung aus und beaufschlagt hierbei den Ventilstößel 62 mit der Betätigungskraft.The actuating body 74 forms a lever arm 75 on which both the contact area 76 and the force application element 80 are arranged. If the actuating body is pivoted about the first pivot axis 72 in the direction of the liquid outlet 22, the force application element 80 executes a movement in the same direction and, in doing so, applies the actuating force to the valve tappet 62.

Der Betätigungskörper weist ein erstes Ende 77 auf, das dem Daumen und dem Zeigefinger des Benutzers zugeordnet ist. Der Abstand des Kraftbeaufschlagungselements 80 vom ersten Ende 77 ist deutlich größer als der Abstand, den das Kraftbeaufschlagungselement 80 zur ersten Schwenkachse 72 einnimmt. Der Abstand des Kraftbeaufschlagungselements 80 vom ersten Ende 77 beträgt mindestens das Vierfache, insbesondere mindestens das Sechsfache, des Abstands, den das Kraftbeaufschlagungselement 80 zur ersten Schwenkachse 72 einnimmt.The actuating body has a first end 77 which is associated with the thumb and forefinger of the user. The distance of the force application element 80 from the first end 77 is significantly greater than the distance that the force application element 80 assumes from the first pivot axis 72. The distance of the force application element 80 from the first end 77 is at least four times, in particular at least six times, the distance that the force application element 80 occupies from the first pivot axis 72.

Das Betätigungsglied 70 wird von einer dem Betätigungsglied 70 zugeordneten ersten Rückstellfeder 84 mit einer Rückstellkraft beaufschlagt.The actuating member 70 is acted upon with a restoring force by a first return spring 84 assigned to the actuating member 70.

Das Betätigungsglied 70 kann in seiner in Figur 2 dargestellten Ruhstellung arretiert werden. Hierzu ist im oberen Endbereich 30 des Handgriffs 28 ein im Wesentlichen L-förmiges Arretierungsglied 85 um eine dem Arretierungsglied zugeordnete zweite Schwenkachse 86 schwenkbar gelagert. Ein erster Schenkel 88 des Arretierungsglieds 85 bildet einen Betätigungsarm aus, der in der in Figur 2 dargestellten sperrenden Stellung des Arretierungsglieds 85 aus der dem Flüssigkeitsauslass 22 zugewandten Vorderseite 90 des Handgriffs 28 herausragt. Ein zweiter Schenkel 92 des Arretierungsglieds 85 bildet einen Arretierungsarm aus, der in der sperrenden Stellung des Arretierungsglieds 85 mit einem freien Ende 94 am Betätigungskörper 74 anliegt und diesen an einer Schwenkbewegung hindert.The actuator 70 can in its in Figure 2 shown rest position are locked. For this purpose, a substantially L-shaped locking member 85 is mounted in the upper end region 30 of the handle 28 so as to be pivotable about a second pivot axis 86 assigned to the locking member. A first leg 88 of the locking member 85 forms an actuating arm, which in the in Figure 2 The illustrated locking position of the locking member 85 protrudes from the front side 90 of the handle 28 facing the liquid outlet 22. A second leg 92 of the locking member 85 forms a locking arm which, in the locking position of the locking member 85, rests with a free end 94 on the actuating body 74 and prevents it from pivoting.

Umgreift der Benutzer mit seiner Hand den Handgriff 28, so verschwenkt er mit seinen Fingern intuitiv das Arretierungsglied 85 entgegen der federelastischen Rückstellkraft einer dem Arretierungsglied 85 zugeordneten zweiten Rückstellfeder 96 in eine in der Zeichnung nicht dargestellte entsperrende Stellung, in der der zweite Schenkel 94 in eine Ausnehmung 98 des Betätigungskörpers 74 eintaucht, so dass das Betätigungsglied 70 aus seiner in Figur 2 dargestellten Ruhestellung um die erste Schwenkachse 72 in Richtung auf den Flüssigkeitsauslass 22 in eine in Figur 2 nicht dargestellte Freigabestellung verschwenkt werden kann. Beim Verschwenken aus der Ruhestellung in die Freigabestellung wird, wie bereits erwähnt, der Ventilstößel 62 vom Kraftbeaufschlagungselement 80 so weit verschoben, dass der Schließkörper 66 die Strömungsverbindung zwischen dem Flüssigkeitseinlass 46 und dem Flüssigkeitsauslass 22 freigibt. Gibt der Benutzer das Betätigungsglied 70 wieder frei, so wird dieses von der ersten Rückstellfeder 84 zurück in die Ruhestellung verschwenkt, so dass das Kraftbeaufschlagungselement 80 den Ventilstößel 62 nicht länger mit einer Betätigungskraft beaufschlagt. Unter der Wirkung des Druckes, den die Reinigungsflüssigkeit auf den Schließkörper 66 ausübt, wird der Schließkörper 66 zusammen mit dem Ventilstößel 62 in die dem Verschlussstopfen 52 abgewandte Richtung verschoben, so dass der Schließkörper 66 wieder seine Schließstellung einnimmt, in der er am Ventilsitz60 dicht anliegt und dadurch die Strömungsverbindung zwischen dem Flüssigkeitseinlass 46 und dem Flüssigkeitsauslass 22 unterbricht.If the user grasps the handle 28 with his hand, he intuitively pivots the locking member 85 with his fingers against the resilient restoring force of a second return spring 96 assigned to the locking member 85 into an unlocking position, not shown in the drawing, in which the second leg 94 is in a Recess 98 of the actuating body 74 is immersed, so that the actuating member 70 from its rest position shown in Figure 2 about the first pivot axis 72 in the direction of the liquid outlet 22 in a Figure 2 release position not shown can be pivoted. When pivoting from the rest position into the release position, as already mentioned, the valve tappet 62 is displaced by the force application element 80 so far that the closing body 66 releases the flow connection between the liquid inlet 46 and the liquid outlet 22. If the user releases the actuating member 70 again, it is pivoted back into the rest position by the first return spring 84, so that the force application element 80 no longer applies an actuating force to the valve stem 62. Under the effect of the pressure that the cleaning liquid exerts on the closing body 66, the closing body 66 is displaced together with the valve tappet 62 in the direction facing away from the closing plug 52, so that the closing body 66 resumes its closed position in which it rests tightly on the valve seat 60 and thereby interrupting the flow connection between the liquid inlet 46 and the liquid outlet 22.

In den Figuren 3 und 4 sind eine zweite und eine dritte vorteilhafte Ausführungsform einer erfindungsgemäßen Ventilpistole schematisch dargestellt. Diese Ausführungsformen sind weitgehend identisch ausgebildet wie die voranstehend unter Bezugnahme auf die Figuren 1 und 2 erläuterte erste Ausführungsform. Für identische Bauteile werden daher in den Figuren 3 und 4 dieselben Bezugszeichen verwendet wie in den Figuren 1 und 2 und zur Vermeidung von Wiederholungen wird bezüglich dieser Bauteile auf die voranstehenden Erläuterungen verwiesen.In the Figures 3 and 4th a second and a third advantageous embodiment of a valve gun according to the invention are shown schematically. These embodiments are largely identical to the above with reference to FIG Figures 1 and 2 illustrated first embodiment. For identical components, the Figures 3 and 4th the same reference numerals are used as in Figures 1 and 2 and to avoid repetition, reference is made to the explanations given above with regard to these components.

Die in Figur 3 schematisch dargestellte zweite vorteilhafte Ausführungsform einer erfindungsgemäßen Ventilpistole ist insgesamt mit dem Bezugszeichen 100 belegt. Von der in den Figuren 1 und 2 dargestellten Ventilpistole 10 unterscheidet sich die Ventilpistole 100 vor allem dadurch, dass das Ventil 38 im Übergangsbereich zwischen dem unteren Endbereich 32 des Handgriffs 28 und dem Schutzbügel 34 angeordnet ist. Insbesondere nimmt der Ventilausgang 56 des Ventilgehäuses 40 bei der Ventilpistole 100 eine Position innerhalb des Handgriffs 28 ein. Der Ventilausgang 56 ist über eine Abflussleitung 102 mit dem Flüssigkeitsauslass 22 verbunden, wobei ein sich an den Ventilausgang 56 anschließender erster Abschnitt 104 der Abflussleitung 102 im Handgriff 28 angeordnet ist. An den geradlinig ausgebildeten ersten Abschnitt 104 schließt sich winklig ein zweiter Abschnitt 106 der Abflussleitung 102 an, der ebenfalls geradlinig ausgebildet ist und in die Auslassbuchse 24 einmündet, wobei der zweite Abschnitt 106 im länglichen Gehäusebereich 18 des Pistolengehäuses 12 angeordnet ist. Sowohl die erste Rückstellfeder 84 als auch die zweite Rückstellfeder 96 stützen sich bei der Ventilpistole 100 am ersten Abschnitt 104 der Abflussleitung 102 ab. Wird das Betätigungsglied 70 der Ventilpistole nach vorne in Richtung auf den Flüssigkeitsauslass 22 bewegt, so taucht der erste Abschnitt 104 in das Betätigungsglied 70 ein.In the Figure 3 The schematically illustrated second advantageous embodiment of a valve pistol according to the invention is denoted overall by the reference symbol 100. From the to the Figures 1 and 2 Valve pistol 10 shown, valve pistol 100 differs primarily in that valve 38 is arranged in the transition region between lower end region 32 of handle 28 and protective bracket 34. In particular, the valve outlet 56 of the valve housing 40 in the valve gun 100 assumes a position within the handle 28. The valve outlet 56 is connected to the liquid outlet 22 via an outflow line 102, a first section 104 of the outflow line 102 adjoining the valve outlet 56 being arranged in the handle 28. A second section 106 of the outflow line 102 adjoins the rectilinear first section 104 at an angle, which is also rectilinear and opens into the outlet socket 24, the second section 106 being arranged in the elongated housing area 18 of the gun housing 12. In the case of the valve pistol 100, both the first return spring 84 and the second return spring 96 are supported on the first section 104 of the drain line 102. If the actuating member 70 of the valve pistol is moved forward in the direction of the liquid outlet 22, the first section 104 plunges into the actuating member 70.

Auch das Betätigungsglied 70 der Ventilpistole 100 kann aus der in Figur 3 dargestellten Ruhestellung um die erste Schwenkachse 72 in Richtung auf den Flüssigkeitsauslass 22 in eine Freigabestellung verschwenkt werden, wobei das Kraftbeaufschlagungselement 80 der Ventilpistole 100 den Ventilstößel 62 mit einer Betätigungskraft beaufschlagt, unter deren Wirkung der Ventilstößel 62 zusammen mit dem Schließkörper 66 in Richtung des Verschlussstopfens 52 bewegt wird, wobei der Schließkörper 66 seine Offenstellung einnimmt und Reinigungsflüssigkeit vom Flüssigkeitseinlass 46 zum Flüssigkeitsauslass 22 strömen kann. Gibt der Benutzer der Ventilpistole 100 das Betätigungsglied 70 frei, so nimmt dieses unter der Wirkung der ersten Rückstellfeder 84 selbsttätig seine Ruhestellung ein, und der Schließkörper 66 wird von der unter Druck stehenden Reinigungsflüssigkeit in seine Schließstellung bewegt.The actuating member 70 of the valve gun 100 can also be derived from the in Figure 3 The rest position shown can be pivoted about the first pivot axis 72 in the direction of the liquid outlet 22 into a release position, the force applying element 80 of the valve gun 100 applying an actuating force to the valve tappet 62, under the action of which the valve tappet 62 together with the closing body 66 in the direction of the sealing plug 52 is moved, wherein the closing body 66 assumes its open position and cleaning liquid can flow from the liquid inlet 46 to the liquid outlet 22. If the user of the valve pistol 100 releases the actuating member 70, this automatically assumes its rest position under the action of the first return spring 84, and the closing body 66 is moved into its closed position by the pressurized cleaning fluid.

Die in Figur 4 schematisch dargestellte dritte vorteilhafte Ausführungsform einer erfindungsgemäßen Ventilpistole ist insgesamt mit dem Bezugszeichen 120 belegt. Bei den voranstehend erläuterten Ventilpistolen 10 und 100 weist das Betätigungsglied 70 einen Betätigungskörper 74 auf, der einen einarmigen Hebel ausbildet, indem das Kraftbeaufschlagungselement 80 auf derselben Seite der ersten Schwenkachse 72 angeordnet ist wie der Anlagebereich 76. Der Betätigungskörper 74 bildet hierzu einen Hebelarm 75 aus, an dem der Anlagebereich 76 und auch das Kraftbeaufschlagungselement 80 angeordnet sind. Dies hat zur Folge, dass das Kraftbeaufschlagungselement 80 beim Verschwenken des Betätigungsglieds 70 in dieselbe Richtung verschwenkt wird wie der Anlagebereich 76. Im Gegensatz hierzu kommt bei der in Figur 4 dargestellten Ventilpistole 120 ein Betätigungsglied 122 mit einem Betätigungskörper 124 zum Einsatz, der einen zweiarmigen Hebel ausbildet. Das Betätigungsglied 122 der Ventilpistole 120 ist um eine erste Schwenkachse 126 verschwenkbar, die zwischen einem rückseitig aus dem Handgriff 28 herausragenden Anlagebereich 128 des Betätigungsglieds 122 und einem mit dem Betätigungskörper 124 verbundenen Kraftbeaufschlagungselement 130 angeordnet ist. Der Betätigungskörper 124 weist einen ersten Hebelarm 129 und einen zweiten Hebelarm 131 auf. Am ersten Hebelarm 129 ist der Anlagebereich 128 angeordnet, und am zweiten Hebelarm 131 ist das Kraftbeaufschlagungselement 130 angeordnet. Vom Kraftbeaufschlagungselement 130 kann ein Ventilstößel 132 sowohl mit einer Druckkraft als auch mit einer Zugkraft beaufschlagt werden. Das Kraftbeaufschlagungselement 130 greift hierzu in eine Ringnut 134 ein, die an dem dem Betätigungskörper 124 zugewandten freien Endbereich des Ventilstößels 132 angeordnet ist.In the Figure 4 The third advantageous embodiment of a valve pistol according to the invention, which is shown schematically, is denoted overall by the reference symbol 120. In the valve pistols 10 and 100 explained above, the actuating member 70 has an actuating body 74 which forms a one-armed lever in that the force application element 80 is arranged on the same side of the first pivot axis 72 as the contact area 76. The actuating body 74 forms a lever arm 75 for this purpose , on which the contact area 76 and also the force application element 80 are arranged. As a result, when the actuating member 70 is pivoted, the force application element 80 is pivoted in the same direction as the contact area 76. In contrast to this, in the case of FIG Figure 4 valve pistol 120 shown an actuating member 122 with an actuating body 124 for use, which forms a two-armed lever. The actuating member 122 of the valve pistol 120 can be pivoted about a first pivot axis 126, which is arranged between a contact area 128 of the actuating member 122 protruding from the handle 28 on the rear side and a force application element 130 connected to the actuating body 124. The actuating body 124 has a first lever arm 129 and a second lever arm 131. The contact area 128 is arranged on the first lever arm 129, and the force application element 130 is arranged on the second lever arm 131. A valve tappet 132 can be acted upon by the force application element 130 both with a compressive force and with a tensile force. For this purpose, the force application element 130 engages in an annular groove 134 which is arranged on the free end region of the valve tappet 132 facing the actuating body 124.

Wird das Betätigungsglied 122 der Ventilpistole 120 aus der in Figur 4 dargestellten Ruhestellung um die erste Schwenkachse 126 nach vorne in Richtung auf den Flüssigkeitsauslass 22 in eine Freigabestellung verschwenkt, so wird der Ventilstößel 132 und mit diesem auch der einstückig mit dem Ventilstößel 132 verbundene Schließkörper 136 in die dem Verschlussstopfen 52 abgewandte Richtung nach hinten verschoben, wobei der Schließkörper 136 von einem Ventilsitz 138 abhebt und dadurch die Strömungsverbindung zwischen dem Flüssigkeitseinlass 46 und dem Flüssigkeitsauslass 22 freigibt. Gibt der Benutzer der Ventilpistole 120 das Betätigungsglied 122 frei, so wird dieses von der ersten Rückstellfeder 84 zurück in die Ruhestellung verschwenkt, wobei die von der ersten Rückstellfeder 84 ausgeübte Rückstellkraft über das Kraftbeaufschlagungselement 130 auf den Ventilstößel 132 und den Schließkörper 136 übertragen wird, so dass der Schließkörper 136 seine Schließstellung am Ventilsitz 138 einnimmt, in der er die Strömungsverbindung zwischen dem Flüssigkeitseinlass 46 und dem Flüssigkeitsauslass 22 unterbricht.If the actuating member 122 of the valve gun 120 is removed from the in Figure 4 The rest position shown is pivoted forward about the first pivot axis 126 in the direction of the liquid outlet 22 into a release position, so the valve tappet 132 and with it also the closing body 136, which is integrally connected to the valve tappet 132, is displaced rearward in the direction facing away from the sealing plug 52, whereby the closing body 136 lifts from a valve seat 138 and thereby the flow connection between the liquid inlet 46 and the liquid outlet 22 releases. If the user of the valve pistol 120 releases the actuating member 122, it is pivoted back into the rest position by the first return spring 84, the restoring force exerted by the first return spring 84 being transmitted via the force application element 130 to the valve stem 132 and the closing body 136, see above that the closing body 136 assumes its closed position on the valve seat 138, in which it interrupts the flow connection between the liquid inlet 46 and the liquid outlet 22.

Die Handhabung der Ventilpistolen 10, 100 und 120 erfolgt vom Benutzer mit geringer Anstrengung. Hierzu trägt die Positionierung der Betätigungsglieder 70 und 122 an der dem Flüssigkeitsauslass 22 abgewandten Rückseite des Handgriffs 28 bei, da der beim Abgeben von unter Druck stehender Reinigungsflüssigkeit von der Reinigungsflüssigkeit auf die Ventilpistolen 10, 100, 120 ausgeübte Rückstoß die Ventilpistolen 10, 100 und 120 gegen den Handballen des Benutzers drückt, so dass die Finger des Benutzers entlastet werden. Zur Entlastung des Benutzers trägt auch bei, dass die Beaufschlagung der Ventilstößel 62, 132 mit der Betätigungskraft von den Kraftbeaufschlagungselementen 80, 130 in Abstand zum oberen Endbereich 30 des Handgriffs 28 erfolgt, denn dies führt zu günstigen Kraftverhältnissen. Der Abstand, den die Kraftbeaufschlagungselemente 80 und 130 zu dem dem länglichen Gehäusebereich 18 zugewandten ersten Ende der Betätigungskörper 74 und 124 aufweist, ist deutlich größer gewählt als der Abstand, den die Kraftbeaufschlagungselemente 80, 130 zur ersten Schwenkachse 72, 126 einnehmen. Wie bereits erwähnt, ist der Abstand zwischen den Kraftbeaufschlagungselementen 80, 130 und dem ersten Ende der Betätigungskörper 74, 124 mindestens viermal so groß wie der Abstand zwischen den Kraftbeaufschlagungselementen 80, 130 und den ersten Schwenkachsen 72, 126. Aufgrund der sich daraus ergebenden günstigen Hebelverhältnisse können die Betätigungskörper 74, 124 mit verhältnismäßig geringer Kraft um die ersten Schwenkachsen 72, 126 verschwenkt werden, und dennoch können von den Kraftbeaufschlagungselementen 80, 130 verhältnismäßig große Betätigungskräfte auf die Ventilstößel 62, 132 ausgeübt werden.The manipulation of the valve pistols 10, 100 and 120 is carried out by the user with little effort. The positioning of the actuating members 70 and 122 on the rear side of the handle 28 facing away from the liquid outlet 22 contributes to this, since the recoil exerted by the cleaning liquid on the valve pistols 10, 100, 120 when the cleaning liquid is dispensed to the valve pistols 10, 100 and 120 presses against the palm of the hand of the user, so that the fingers of the user are relieved. The fact that the actuation force of the force application elements 80, 130 is applied to the valve tappets 62, 132 at a distance from the upper end region 30 of the handle 28 also helps to relieve the user, because this leads to favorable force relationships. The distance between the force loading elements 80 and 130 and the first end of the actuating bodies 74 and 124 facing the elongated housing area 18 is selected to be significantly greater than the distance between the force loading elements 80, 130 and the first pivot axis 72, 126. As already mentioned, the distance between the force applying elements 80, 130 and the first end of the actuating body 74, 124 is at least four times as large as the distance between the force applying elements 80, 130 and the first pivot axes 72, 126. Due to the resulting favorable lever ratios the actuating bodies 74, 124 can be pivoted about the first pivot axes 72, 126 with relatively little force, and yet relatively large actuating forces can be exerted on the valve tappets 62, 132 by the force application elements 80, 130.

Claims (19)

  1. Valve gun for a high pressure cleaning appliance for dispensing a cleaning liquid in a controlled manner, having a gun housing (12), which comprises a handle (28) with an upper end region (30) associated with the thumb and index finder of the user and a lower end region (32) associated with the little finger of the user, and having a valve (38) arranged in the gun housing (12) in the flow path between a liquid inlet (46) and a liquid outlet (22), said valve comprising a closing body (66, 136) that in a closing position tightly abuts against a valve seat (60, 138) and is moveable into an open position by displacing a valve plunger (62, 132), wherein the liquid outlet (22) is arranged on a front side (20) of the gun housing (12), and wherein an actuating member (70; 122) for displacing the valve plunger (62, 132) is arranged on a rear side (78) of the handle (28) facing away from the liquid outlet (22), wherein the actuating member (70, 122) comprises an actuating body (74, 124), which in a rest position projects with an abutment region (76, 128) facing away from the liquid outlet (22) out of the rear side (78) of the handle (28) and can be moved into a release position by the user with the heel of the hand, wherein the actuating body (74, 124) is pivotable about a first pivot axis (72, 126) arranged in the lower end region (32) of the handle (28) back and forth between the rest position and the release position, wherein the valve plunger (62, 132) is able to be acted upon with an actuating force by the actuating member (70, 122) at a distance from the upper end region (30) of the handle (28), and wherein the valve (38) is arranged at least partially in the lower end region (32) of the handle (28) and/or in a protective bar (34) of the gun housing (12) adjoining the lower end region (32), characterized in that the actuating member (70, 122) comprises a force application element (80, 130), which is able to abut against the valve plunger (62, 132) and is arranged on the actuating body (74, 124).
  2. Valve gun in accordance with Claim 1, characterized in that the valve plunger (62, 132) is able to be acted upon with an actuating force in the direction toward the lower end region (32) of the handle (28) offset from the upper end region (30).
  3. Valve gun in accordance with Claim 1 or 2, characterized in that the valve (38) comprises a valve housing (40) having an valve entry (42) and a valve exit (56), wherein the valve seat (60, 138) and the closing body (66, 136) are arranged in the valve housing (40), and wherein the valve exit (56) is in flow connection with the liquid outlet (22) by way of a discharge conduit (58, 102).
  4. Valve gun in accordance with Claim 3, characterized in that at least a portion of the discharge conduit (58) is arranged in the protective bar (34).
  5. Valve gun in accordance with Claim 3 or 4, characterized in that at least a portion of the discharge conduit (102) is arranged in the handle (28).
  6. Valve gun in accordance with Claim 5, characterized in that a portion (104) of the discharge conduit (102) extends from the valve exit (56) to the upper end region (30) of the handle (28).
  7. Valve gun in accordance with any one of the preceding Claims, characterized in that the force application element (130) is connected to the actuating body (124) in one piece.
  8. Valve gun in accordance with any one of Claims 1 to 6, characterized in that the force application element (80) forms a separate component, which is fixed to the actuating body (74).
  9. Valve gun in accordance with any one of the preceding Claims, characterized in that the actuating body (74) forms a lever arm (75), on which the abutment region (76) and the force application element (80) are arranged.
  10. Valve gun in accordance with any one of Claims 1 to 8, characterized in that the actuating body (124) forms a first lever arm (129) and a second lever arm (131), wherein the abutment region (128) is arranged on the first lever arm (129), and wherein the force application element (130) is arranged on the second lever arm (131).
  11. Valve gun in accordance with any one of the preceding Claims, characterized in that the actuating body (74, 124) comprises a first end (77) associated with the thumb and index finger of the user, wherein the distance of force application element (80, 130) from the first end (77) is at least four times the distance that the force application element (80, 130) adopts from the first pivot axis (72, 126).
  12. Valve gun in accordance with any one of the preceding Claims, characterized in that the closing body (136) is able to be acted upon with a closing force in the direction toward the valve seat (138) by moving the actuating body (124) from the release position into the rest position.
  13. Valve gun in accordance with any one of the preceding Claims, characterized in that the valve gun (10, 100, 120) comprises a restoring spring (84), which is associated with the actuating body (74, 124) and acts upon the actuating body (74, 124) with a restoring force in the direction toward the rest position.
  14. Valve gun in accordance with any one of the preceding Claims, characterized in that the valve gun (10, 100, 120) comprises a locking member (85), which is moveable back and forth between a locking position and an unlocking position for locking the actuating member (70, 122).
  15. Valve gun in accordance with Claim 14, characterized in that the locking member (85) is arranged on the front side (90) of the handle (28) facing toward the liquid outlet (22).
  16. Valve gun in accordance with Claim 14 or 15, characterized in that the locking member (85) is mounted so as to be pivotable about a pivot axis (86) associated with the locking member (85).
  17. Valve gun in accordance with Claim 16, characterized in that the pivot axis (86) associated with the locking member (85) is arranged in the upper end region (30) of the handle (28) or in a region of the gun housing (12) adjacent to the upper end region (30) of the handle (28).
  18. Valve gun in accordance with any one of Claims 14 to 17, characterized in that the locking member (85) comprises an actuating arm and a locking arm, wherein the actuating arm in the locking position of the locking member (85) projects out of the front side (90) of the handle (28) facing toward the liquid outlet (22) and the locking arm in the locking position of the locking member (85) blocks a movement of the actuating member (70, 122).
  19. Valve gun in accordance with any one of Claims 14 to 18, characterized in that the valve gun (10, 100, 120) comprises a restoring spring (96), which is associated with the locking member (85) and acts upon the locking member (85) with a restoring force in the direction toward the locking position.
EP16722890.7A 2016-05-13 2016-05-13 Valve gun for a high-pressure cleaning device Active EP3454993B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/060898 WO2017194171A1 (en) 2016-05-13 2016-05-13 Valve gun for a high-pressure cleaning device

Publications (2)

Publication Number Publication Date
EP3454993A1 EP3454993A1 (en) 2019-03-20
EP3454993B1 true EP3454993B1 (en) 2021-07-07

Family

ID=55971008

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EP16722890.7A Active EP3454993B1 (en) 2016-05-13 2016-05-13 Valve gun for a high-pressure cleaning device

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EP (1) EP3454993B1 (en)
CN (1) CN109070108B (en)
DK (1) DK3454993T3 (en)
WO (1) WO2017194171A1 (en)

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Publication number Priority date Publication date Assignee Title
GB513013A (en) 1938-03-29 1939-10-02 Basil Marven Improvements in or relating to hand-controlled nozzles for the delivery of fluids or powdered material
DE2827402A1 (en) * 1978-06-22 1980-01-03 Zulauf Gmbh Variable flow garden hose nozzle - has locking mechanism securing valve cone and pull rod in various positions
DE3431800A1 (en) 1984-08-30 1986-03-13 Wolfgang 4800 Bielefeld Suttner Spray gun
CN2130604Y (en) * 1992-08-17 1993-04-28 王幸子 The spraying method of the paint spray gun is directly converted to the valve body mechanism
DE20116060U1 (en) * 2001-09-29 2001-12-06 Metallwerke Otto Dingerkus GmbH, 57439 Attendorn Dispensing and metering valve for fluid media
ITRE20020039U1 (en) 2002-12-19 2004-06-20 Arrow Line Srl OPERATING MECHANISM OF AN INTERCEPTION VALVE FOR WASHING GUNS OF HIGH PRESSURE CLEANING EQUIPMENT
DE102006013005A1 (en) * 2006-03-22 2007-09-27 Alfred Kärcher Gmbh & Co. Kg High-pressure spray gun
DK3079833T3 (en) * 2013-12-12 2018-12-17 Kaercher Alfred Se & Co Kg Valve gun for a high pressure cleaner
DE202015100240U1 (en) * 2015-01-20 2015-02-18 Kuan-Hsiung Wang Pistol nozzle for gardening

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3454993A1 (en) 2019-03-20
CN109070108A (en) 2018-12-21
DK3454993T3 (en) 2021-09-13
CN109070108B (en) 2021-02-09
WO2017194171A1 (en) 2017-11-16

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