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EP1136181B1 - Dispositif de polissage actionné à une main - Google Patents

Dispositif de polissage actionné à une main Download PDF

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Publication number
EP1136181B1
EP1136181B1 EP00126757A EP00126757A EP1136181B1 EP 1136181 B1 EP1136181 B1 EP 1136181B1 EP 00126757 A EP00126757 A EP 00126757A EP 00126757 A EP00126757 A EP 00126757A EP 1136181 B1 EP1136181 B1 EP 1136181B1
Authority
EP
European Patent Office
Prior art keywords
grinding device
holding head
handle
speed
portable grinding
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.)
Expired - Lifetime
Application number
EP00126757A
Other languages
German (de)
English (en)
Other versions
EP1136181A3 (fr
EP1136181A2 (fr
Inventor
Yiannis Georgiou
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.)
Rodcraft Pneumatic Tools GmbH
Original Assignee
Rodcraft Pneumatic Tools GmbH
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 Rodcraft Pneumatic Tools GmbH filed Critical Rodcraft Pneumatic Tools GmbH
Publication of EP1136181A2 publication Critical patent/EP1136181A2/fr
Publication of EP1136181A3 publication Critical patent/EP1136181A3/fr
Application granted granted Critical
Publication of EP1136181B1 publication Critical patent/EP1136181B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/006—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/026—Fluid driven

Definitions

  • the invention relates to a portable grinder with housing, on the front a grinding tool driven by a rotor and at the back Holding head is arranged, the grinder with a speed controller is equipped, via which the rotational speed by means of a speed setting is adjustable (see e.g. US-A-6 004 197).
  • Grinding machines are used to coat, varnish and paint Remove surfaces of different objects and are made of, for example known from EP 0 577 575 or DE-PS 39 33 885.
  • a possible area of application for these grinders is removing paint from the outside surface of Vehicles, with the aim of having the uneven contours of such a vehicle a grinder.
  • Portable devices are used by the user grabs with one hand and touches the surface. Regulating the speed, with regard to the most varied of tasks, even for one Object must be changed several times, depending on whether, for example, over the entire area or working on chamfers or in throats is done via a speed controller, which can be operated with the second hand.
  • the device To adjust the speed the device must usually be discontinued, since the grinder is located on the Surface pressure is not maintained constantly when regulating the speed leaves, so that damage to the surface cannot be excluded. In many known grinding machines, the switch for speed regulation is located even below the palm. Another disadvantage of known devices is that that holding heads in different sizes are used for different users and must be replaced accordingly. This applies in particular to legal or left-handed as well as for the usually different hand sizes of men and women. These at least four basic settings are satisfied, that the holding heads or the handles are designed to be interchangeable, so that each user can fall back on the more or less suitable holding head. Indeed some effort is required to do this since the device has a new holding head must be equipped and this must also be secured accordingly.
  • the object of the present invention is therefore a portable grinding device to create, the speed of which is easy and without stopping the Grinding device can be regulated from the surface of the object and that without expensive Conversion work can be used by different operators.
  • the object of the invention is achieved in that the speed setting about an axis running essentially perpendicular to the grinding tool is pivotable and is assigned to the upper edge of the holding head.
  • the speed setting is one in Axis that can be pivoted essentially vertically to the grinding tool, ie ultimately around the axis in the direction of which the user exerts the force on the grinder or tool.
  • the speed can change during the grinding process is continuously varied and adapted to the circumstances, depending on the whether the grinding tool is over the entire surface, with a part of its surface or just about is used on an edge. Because with one hand both the pressure on the grinding tool or the surface to be worked, as well as the speed is set, a particularly uniform and safe processing is possible. Abrupt jerky movements while pressing the grinder onto the Surface that inevitably occurred when the speed was adjusted with the second hand are therefore excluded.
  • the grinder is particularly easy to handle if the Speed setting of the holding head in a one-hand operation of the holding head and enable speed adjustment and within reach of the holding head the distance between the index finger or middle finger. Is to the speed setting directly below one assigned to the holding head Cover arranged at the top of the holding head so that this adjustment device is easily accessible in height. At the same time, the distance is also radial Dimension the direction so that the speed setting for the index or middle finger is easy to bridge. It is generally assumed that the axis of the grinding tool and that of the holding head overlap approximately.
  • the speed setting is located outside the housing and corresponds to a speed controller designed within this. to Connection of these components is provided that the speed setting over a rotatably mounted regulator ring arranged within the holding head, the speed regulator assigned.
  • the axis of the regulator ring also essentially falls with the axis of the grinding tool or the holding head.
  • the regulator ring is provided with a cover, below which the speed setting is slightly protruding, more precisely, over whose radial boundary is protruding. It is understood that the radius the limit of the coverage in this area and the radius of that of the handle the speed setting orbiting path are at least approximately the same.
  • the grinding device according to the invention can be driven pneumatically or electrically his.
  • a pneumatic drive is expediently provided, which has a Supply connection as well as an exhaust air connection, the supply connection an air inlet valve is assigned to the rotor space.
  • the air intake valve is preferably spring-loaded and directly behind the compressed air inlet of the supply connection arranged. This air intake valve is, as explained below is controlled via a handle, which can also be operated with one hand is.
  • a handle as an on / off switch is on Holding head provided, which is arranged and formed movable in the direction of the holding head is.
  • This handle is adapted to the shape of the holding head, so that it too can be operated with the back of the hand.
  • this handle is countered in the direction of the holding head or the grinding tool the force of a suspension is moved or pivoted about a corresponding joint. Even when the back of the hand is lifted slightly, the handle moves due to the Spring action again in the opposite direction to the starting position, releases So from the holding head, so that the device switches off immediately by the compressed air supply is canceled.
  • Valve tappet is associated with the end facing away from the handle is connected to the air inlet valve.
  • the valve tappet When operating the handle, i.e. when moving the same in the direction of the holding head, the valve tappet is in the direction of its Longitudinal axis moves, so that the air inlet hole is released and the compressed air can flow into the rotor space. With opposite movement of the handle the valve tappet closes the air inlet hole and the compressed air supply is canceled. Due to the longitudinal displacement of the valve tappet, the rapid Switch the device on and off and by rotating the valve tappet Speed controller regulating the rotational speed of the Grinding tool between zero and maximum position.
  • the speed controller at its end facing the air inlet valve has at least one, preferably two bores leading to an air inlet bore are formed correspondingly in the air inlet valve.
  • a preferred embodiment of the invention provides that the bore and the air inlet hole varies depending on the position of the speed controller fully or partially overlapping are formed and arranged. Depending on the extent to which one of these holes overlaps with the air intake valve there is air through the supply connection or air inlet valve and holes embedded in the rotor space.
  • the speed of the rotor can thus be controlled the speed setting can be decreased or increased. It always says a hole on the speed controller opposite the air inlet hole. Which of both holes this depends on which side of the grinder the Speed setting is connected to the regulator ring.
  • the speed setting in each case with the regulator ring can be connected, preferably screwed.
  • One and the same holding head can be on different positions can be equipped with a speed setting, each where it is most convenient for the operator.
  • the housing has corresponding receptacles for this on, the regulator ring is also designed accordingly, for example with a thread, that he record a speed setting in multiple positions can. Regardless of the position of the speed setting on the left or on the right side of the device, the regulator ring is moved by the same amount, whereby this rotary motion is then transferred to the speed controller.
  • the holding head of a human hand is formed integrally, wherein it is on the side corresponding recesses and the cover one ergonomically to the outside advantageously has a curved surface.
  • the curved surface is adapted to the palm of the hand, the speed setting in Range of index or middle finger is.
  • the width of the holding head is expediently in addition Tapered in sections in the direction of the supply connection.
  • the grinder with a safety handle on the Back of the grinder is equipped, via which the handle can be blocked.
  • the handle can therefore only be operated if the safety handle has been used beforehand has been released from its blocking position. So it prevents the handle inadvertently moved in the direction of the holding head or the grinding tool can be.
  • a corresponding recess is provided in the handle, which is designed to correspond to the safety handle.
  • the exhaust air connection and Suction connection combined in a common connection.
  • the grinder can also have a separate exhaust and a separate suction connection.
  • the invention is particularly characterized in that a portable Grinding device is created, with which the processing of an object for the first time One-handed operation is possible. All safety, control and regulating devices can be reached with one hand. This applies to those who act as on / off switches Handle on the back of the holding head, an additional safety handle and especially for the speed controller, which is designed to be pivotable and over the Index finger to use.
  • the speed setting can be released from the holding head and in at least four different positions for right-handed and left-handed people or users with different sized hands. Is to the holding head is not round, but has a curved surface, in addition, the device is rising from the back to the front in a gentle line built, so that the operator put the complete hand on the housing and the grinder can safely guide.
  • Fig. 1 shows a grinder 1 with housing 4 with the front 5 and not recognizable here because the grinding tool is hidden under the protective cover 28.
  • the holding head 3 On the back 6 of the grinder 1, the holding head 3 is arranged, which can advantageously be comprised in one-hand operation, all security, Regulation and control devices can be handled.
  • the palm of the hand The user lies on the cover 27 on the holding head 3, the surface 19 of which is arched. With the palm of your hand, provided the safety handle 25 is released, the handle 14 against the force of a spring in the direction of the holding head 3 moves.
  • the handle 14 has a corresponding one for the safety handle 25 corresponding recess 33. Blocks this security handle 25 the handle 14, it cannot be moved in the direction of the holding head 3.
  • receptacles 24 are provided, which are in the direction of the supply connection 20 are tapered towards the rear end of the grinding device 1. Especially the user can simply and safely use the index finger 10 on the upper edge 10 of the holding head 3 reach the speed setting 2.
  • This embodiment is a pneumatically driven one Grinding device 1, which has a supply connection 20 and an exhaust air connection having.
  • An additional suction connection extends into the area of the grinding tool 30 provided, which in this area when processing a Extracts swirled chips, particles and other components and collectively with the exhaust air through connection 31 to a collection.
  • Fig. 2 shows a grinder 1 in side view, in particular here Recesses 18, the hands or fingers are formed, can be seen are. These are present in the area of the holding head 3, more precisely the cover 27.
  • the speed setting 2 is slightly above the cover 27 formed on the upper edge 10 of the holding head 3 so that it protrudes from the holding head 3 in a one-hand operation of holding head 3 and speed setting 2 enabling and from the holding head 3 within reach of the index finger or the middle finger of the user is arranged.
  • the little one In this illustration, the distance in terms of height is in the radial direction in FIG. 5 and 6 clarifies.
  • the speed setting 2 sits in the receptacle 23 and is connected to the regulator ring (not shown here) by screwing.
  • the speed setting 2 can alternatively also be inserted into the receptacle 23 ' and screwed there. In this case the speed setting would be 2 arranged opposite the holding head 3 so that a user with a smaller hand can operate the grinder 1.
  • FIG. 3 shows a longitudinal section through the grinding device 1, in particular the Components arranged within the housing 4 are clearly visible.
  • the handle 14 When actuated the handle 14 after loosening the safety handle 25 is the on / off switch Handle 14 moves towards holding head 3. For this purpose, this has a joint 33.
  • the Handle 14 is associated with a valve lifter 8, which is thus in the same direction is moved.
  • the valve tappet blocks 8 At its end facing away from the handle 14, the valve tappet blocks 8 the spring-loaded air inlet valve 13 or the air inlet bore 17. These are arranged directly behind the supply connection 20 for compressed air. With longitudinal displacement of the valve lifter 8, the air inlet bore 17 is released, so that the Compressed air can penetrate into the area of the rotor space 26.
  • the valve lifter 8 will recorded by the speed controller 7.
  • the latter is on the air intake valve 13 facing end 16 with bores, which are designated in Fig. 4 with 15 equipped.
  • the rate of ratios of the grinding tool can be regulated by drilling and cover the air inlet bore to a corresponding extent and a appropriate amount of compressed air is delivered to the rotor chamber 26 and the speed of the Rotor is reduced or increased.
  • the second hole is used when speed setting 2 is in another shot.
  • the speed controller 7 is on the regulator ring 9 by means of the speed setting 2 regulated. This can in different recordings 34, 34 'with the regulator ring 9 are screwed.
  • the speed setting 2 is about the axis 11, which coincides with the axis of rotation of the grinding tool in this embodiment designed and arranged pivotable, which when pivoting Exerted torque transmitted to the speed controller 7 via the controller ring 9 and the amount of compressed air released is influenced accordingly.
  • exhaust air connection 29 and suction connection 30 open into a common connection 31.
  • Fig. 4 shows a partial section through a grinding device 1.
  • the speed setting 2 adapted to a right-hander, in the recess 23 the left side 21 arranged in the working direction of the grinding device 1.
  • For a left-hander would be speed setting 2 on the right 22 used in the recess 24, where it fits for a left-hander the index finger would have to be handled.
  • FIG. 5 illustrates the ease of handling of the grinding device according to the invention 1.
  • the holding head 3 ergonomically adapted to the palm of a hand can be seen,
  • the speed setting 2 only survives slightly beyond its outer dimension, so that it can be operated with the index finger.
  • At 18 there are side recesses referred to, which tapers towards the supply connection 20 are. It is easy to imagine that every user, especially a male user and female with different sized hands can grasp the holding head 3.
  • An example is a for male user access and b is one width appropriate for access by a female user.
  • Fig. 7 shows a perspective view of a grinding device 1, in which the exhaust air connection 29 and the suction connection 30 are formed separately.
  • the exhaust air connection 29 is initially arranged, which serves to discharge the exhaust air flowing out of the rotor space.
  • the suction connection 30 is arranged, via which the during the grinding process whirled up chips and particles derived and a collection or disposal are fed. While in Figures 1 to 6 exhaust and suction connection combined are executed, these two connections are in the variant of the invention 7 separately formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Claims (16)

  1. Appareil de polissage portable (1) comportant un boítier (4), sur le côté avant (5) duquel est disposé un outil de polissage entraíné par un rotor, et sur le côté arrière (6) duquel est disposée une tête de retenue (3), l'appareil de polissage (1) étant équipé d'un régulateur de vitesse (7), au moyen duquel la vitesse de rotation est réglable à l'aide d'une unité de réglage de vitesse (2), caractérisé en ce que l'unité de réglage de vitesse (2) est agencée de manière à pouvoir pivoter autour d'un axe (11) sensiblement perpendiculaire à l'outil de polissage, et est associée au bord supérieur (10) de la tête de retenue (3).
  2. Appareil de polissage portable selon la revendication 1, caractérisé en ce que
    l'unité de réglage de vitesse (2) est disposée à une distance de la tête de retenue (3), qui permet une manipulation d'une seule main de la tête de retenue (3) et de l'unité de réglage de vitesse (2) et se situe par rapport à la tête de retenue (3) dans la portée de l'index ou du médius.
  3. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'unité de réglage de vitesse (2) est associée au régulateur de vitesse (7) par l'intermédiaire d'une bague de régulation (9) disposée à l'intérieur de la tête de retenue (3) et montée rotative.
  4. Appareil de polissage portable selon une ou plusieurs revendications précédentes, caractérisé en ce que la bague de régulation (9) est pourvue d'un capot (27), au-dessous duquel l'unité de régulation de vitesse (2) est formée de manière à être légèrement en saillie.
  5. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il est prévu un dispositif d'entraínement pneumatique, qui comporte un raccord d'alimentation (20) ainsi qu'un raccord d'évacuation d'air (29), une soupape d'entrée d'air (13) étant associée, dans l'espace (26) du rotor, au raccord d'alimentation (20).
  6. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il est prévu en tant qu'interrupteur de marche/arrêt, sur la tête de retenue (3), une poignée (14), qui est disposée et agencée de manière à être déplaçable en direction de la tête de retenue (3).
  7. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'à la poignée (14) est associé un poussoir de soupape (8), qui est logé dans le régulateur de vitesse (7) et qui est relié, au niveau de son extrémité tournée à l'opposé de la poignée (14), à la soupape d'entrée d'air (13).
  8. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que le régulateur de vitesse (7) comporte, au niveau de son extrémité (13) tournée vers la soupape d'entrée d'air (16), au moins et de préférence deux perçages (15), qui sont agencés de manière à correspondre à un perçage d'entrée d'air (17) situé dans la soupape d'entrée d'air (13).
  9. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que le perçage (15) et le perçage d'entrée d'air (17) sont agencés et disposés de manière à se recouvrir entièrement ou partiellement en fonction de la position du régulateur de vitesse (7).
  10. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que dans le boítier (4) sont prévus, sur des côtés opposés (21,22), des logements (23,24), dans lesquels l'unité de réglage de vitesse (2) peut être reliée de préférence par vissage, respectivement à la bague de régulation (9).
  11. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que de chaque côté (21) de l'appareil de polissage (1) sont prévus au moins deux logements (23,23') disposés l'un derrière l'autre et à l'aide desquels l'unité de réglage de vitesse (2) peut être reliée, de préférence par vissage, respectivement à la bague de régulation (9).
  12. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que la tête de retenue (3) est conformée de manière à être adaptée à une main humaine, et comporte latéralement des évidements correspondants (18), et le capot (27) possède une surface (19) avantageusement cintrée de façon ergonomique vers l'extérieur.
  13. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que la tête de retenue (3) est réalisée de telle sorte que sa largeur diminue par sections en direction du raccord d'alimentation (20).
  14. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'appareil de polissage (1) est équipé d'une poignée de sécurité (25) située sur le côté arrière (6) de l'appareil de polissage (1) et à l'aide de laquelle la poignée (14) peut être bloquée.
  15. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'appareil de polissage (1) est équipé d'un raccord d'aspiration (30) associé à l'outil de polissage.
  16. Appareil de polissage portable selon une ou plusieurs des revendications précédentes, caractérisé en ce que le raccord d'évacuation d'air (29) et le raccord d'aspiration (30) sont formés en étant réunis dans un raccord commun (31).
EP00126757A 2000-03-12 2000-12-06 Dispositif de polissage actionné à une main Expired - Lifetime EP1136181B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10011161A DE10011161A1 (de) 2000-03-12 2000-03-12 Schleifgerät mit Einhandbedienung
DE10011161 2000-03-12

Publications (3)

Publication Number Publication Date
EP1136181A2 EP1136181A2 (fr) 2001-09-26
EP1136181A3 EP1136181A3 (fr) 2003-12-10
EP1136181B1 true EP1136181B1 (fr) 2004-11-03

Family

ID=7633888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126757A Expired - Lifetime EP1136181B1 (fr) 2000-03-12 2000-12-06 Dispositif de polissage actionné à une main

Country Status (8)

Country Link
US (1) US6394885B2 (fr)
EP (1) EP1136181B1 (fr)
JP (1) JP2001269852A (fr)
CN (1) CN1173803C (fr)
AT (1) ATE281276T1 (fr)
CA (1) CA2332388A1 (fr)
DE (2) DE10011161A1 (fr)
TW (1) TW523440B (fr)

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US9868199B2 (en) * 2014-01-29 2018-01-16 Black & Decker Inc. Paddle assembly on a compact sander
CN104485049B (zh) * 2014-10-11 2018-06-01 赵济彦 一种实验室用物理打磨机
DE102016106556A1 (de) * 2016-04-11 2017-10-12 Festool Gmbh Hand-Werkzeugmaschine mit einem Absaugschlauch
TWI626115B (zh) * 2017-04-10 2018-06-11 Pneumatic grinder with improved grip structure
CN113696046B (zh) * 2020-05-22 2025-04-04 宁波市祥运气动工具有限公司 一种气动磨光机
CN113442023A (zh) * 2021-06-02 2021-09-28 许凤英 一种漆面打磨装置
CN120362993B (zh) * 2025-06-25 2025-09-12 山西富亨迪新材料股份有限公司 一种镁锭切削机用快速固定装置

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Also Published As

Publication number Publication date
DE50008504D1 (de) 2004-12-09
US6394885B2 (en) 2002-05-28
CN1313168A (zh) 2001-09-19
US20010021632A1 (en) 2001-09-13
TW523440B (en) 2003-03-11
ATE281276T1 (de) 2004-11-15
CA2332388A1 (fr) 2001-09-12
CN1173803C (zh) 2004-11-03
EP1136181A3 (fr) 2003-12-10
EP1136181A2 (fr) 2001-09-26
DE10011161A1 (de) 2001-09-13
JP2001269852A (ja) 2001-10-02

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