EP2682353A1 - Spray head for spray can - Google Patents

Abstract

The spray device (5) has a base element whose underside is fixedly arranged on a top pressure vessel portion. The blocking surface, relief face and end stop are formed on the top side of the base element. A twisting head which is rotatably arranged on the upper side of the base element has an actuator (23,23') and a spray nozzle, and is rotatable between a locking position of the actuator and a release position (15) of the actuator.

Description

Field of the invention

The invention relates to a spraying device for a pressure vessel, in particular for a spray can, with a base element and a twisting head, which is rotatable between a blocking position of an actuator and a release position of the actuator.

State of the art

Spraying devices for spray cans are known from the prior art.

Furthermore, from the EP 0 818 401 B1 a spray head for a spray can, in which a safety cap secures the spray head against accidental spraying. The safety cap is rotatably arranged dome-like over the top of the spray can and extends in the secured state on the dome-shaped spray head. This result from the dome-shaped safety cap and the dome-shaped spray head with two contacting friction surfaces. By penetrating dirt particles or by freezing in the winter moisture twisting the safety cap against the spray head is difficult. In addition, the stacking for storing spray cans with a dome-shaped spray head is expensive.

Against this background, the present invention seeks to provide a spray device for a spray can available, which is composed of as few parts as possible, both simple and inexpensive to manufacture as well as easy to install and operate. Finally, this should a stackable solution for the spraying device of the spray can be created.

This object is achieved by a spray device for a spray can with the features of claim 1. Advantageous embodiments and further developments of the invention are described in the subclaims.

For this purpose, a spray device according to the invention for a pressure vessel, in particular for a spray can, with a base member which is fixedly arranged with its underside at an upper pressure vessel portion, wherein on the upper side of the base member a blocking surface, a release surface and at least one end stop are formed, and a Turret, which is rotatably disposed on the upper side of the base member, wherein the turret having an actuator and a spray nozzle and is rotatable between a locking position of the actuator and a release position of the actuator, provided. The blocking surface, the release surface and end stops can in this case comprise three circular segment sections and together describe a circle. Each section may in this case comprise a circle segment section of 120 °. The spray nozzle may be integrally formed with the twisting head. Furthermore, the spray nozzle may extend in a predominantly axial direction.

The two-part spray device can be formed by plastic injection molding. Since the base element and the twisting have little touching surfaces, only small forces are required for rotation. In addition, penetrating dirt particles or moisture freezing in winter hardly make it difficult to twist the safety cap relative to the spray head. Furthermore, the stacking for storing the spray cans is simplified with this twisting head. In addition, the actuator may have a large plateau, whereby it can be operated with gloves, such as winter gloves.

The base element and the torque head can be designed so that they can be attached to standardized spray cans, for example in accordance with European standard EN 14847. Thus, the spray can is universally applicable and suitable for a wide range of applications.

The spraying device arranged on a spray can be introduced into a recess formed on the underside of a spray can and has a centering and supporting effect when stacking. This is possible in particular because the spray nozzle protrudes only slightly beyond the contour of the twisting head. In general, the nozzle is only a few millimeters, preferably one centimeter above the contour of the twisting head.

Advantageously, the base member has a substantially annular segment or fan-shaped locking surface, which cooperates blocking in the blocking position with the arranged on the twisting actuator. As a result, unintentional actuation of the actuator can be prevented in a simple and cost-effective manner. In addition, a simple handling is provided.

On an outer surface of the base member are a Sperrrastelement, a release latching element and formed on an outer surface of the Verdrehkopfes a detent, wherein the detent in the blocking position with the Sperrrastelement and in the release position with the Freigaberastelement is engageable. This in turn simplifies handling even under difficult weather conditions and reduces operating errors. Furthermore, the spray device is very easy to operate with one hand.

Advantageously, a first end stop and a second end stop are formed on a base projection, which cooperate with a first turning head stop and a second turning head stop. The first turning head stop and the second turning head stop can in this case be formed on an inner side of the twisting head. This in turn simplifies Handling in difficult weather conditions and prevents incorrect operation.

Advantageously, base element clamping hooks and / or base element projections are formed on the base element, which can be brought into latching engagement with a first edge formed on the upper pressure vessel section for axially fixing the base element. As a result, the base element is fixed in the axial direction of the spray can and relatively difficult to rotate relative to the spray can. It can e.g. nor O-rings or similar frictional force increasing components between the spray can and the base member may be arranged to further reduce rotation of the base member relative to the spray can. Also other form-fitting measures between base element and spray can be arranged.

Advantageously, holding elements are formed on the upper side of the base element, which are freely rotatable but axially fixed with a guide profile formed on the twisting head. As a result, the turning head can be slightly rotated relative to the base element, wherein the turning head is fixed in the axial direction via the base element to the spray can.

When the actuator is not actuated, the spray nozzle is advantageously arranged at an angle α which is inclined relative to the longitudinal axis direction of the spray can and corresponds to the angle β between the actuated actuator and the unactuated actuator. As a result, the alignment of the spray nozzle with actuated actuator corresponds to the longitudinal axis direction of the spray can and simplifies accurate spraying.

Advantageously, grip elements are formed on the outer surface of the twisting head, for example in the form of parallel longitudinal grooves, webs or in the form of a corrugation or of concave or convex knobs. This turns the twisting head against the base element or the spray can once again simplified. Even in the most difficult weather conditions, which require, for example, the wearing of protective gloves, a simple and safe operation of the spray can is provided.

A spray guard advantageously extends around the spray nozzle. This spray guard may be formed on the top of the twisting head substantially cylinder jacket. This can reduce the unintended spraying of a hand operating the spray head. The spray protection can in this case extend in the axial direction, concentric with the spray nozzle. The spray guard may extend slightly beyond the spray nozzle.

Advantageously, a protruding into the interior of the twisting head mounting guide and the base element a complementary guide groove are provided. As a result, the position of the torque head relative to the base element during assembly is clearly determined and incorrect mounting, e.g. Jamming or breaking off of plastic noses prevented. At the same time, the installation time is reduced.

Advantageously, the blocking surface, the locking detent element and the releasable detent element are formed integrally and integrally with the base element. As a result, in turn, the manufacturing and assembly costs can be reduced.

The actuator, the spray guard and the spray nozzle are advantageously rigidly connected together. In this case, the actuator, the spray guard and the spray nozzle may be formed integrally and integrally with the twisting head. Thus, once again the manufacturing and assembly costs can be reduced.

Advantageously, the actuator is tiltably connected to the torque head via a film hinge. This allows a compact and simple design of the spray device, easy operation and avoids spraying the user.

The base member is advantageously adapted to a standardized spray can, e.g. according to EN 14847, latchable attachable and the twisting head latching on the base element attachable. Thus, the sprayer is universally applicable, very fast and easy to assemble and at the same time to produce cost-effectively.

Advantageously, the spray device according to the invention is arranged on a spray can. Thus, all the advantages mentioned when pressing the sprayer can be linked to the spray can.

Brief description of the drawings

• Figur 1 eine perspektivische Teilansicht einer Spraydose;
• Figur 2 eine perspektivische Ansicht von oben eines Sockelelements gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 3 eine perspektivische Ansicht von unten des Sockelelements gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 4 eine perspektivische Ansicht von oben eines Verdrehkopfes gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 5 eine perspektivische Ansicht von unten des Verdrehkopfes gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 6 eine perspektivische Ansicht einer Sprühvorrichtung in einer Sperrstellung gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 7 eine perspektivische Ansicht einer Sprühvorrichtung in einer Freigabestellung gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 8 eine weitere perspektivische Ansicht von oben des Sockelelements gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung;
• Figur 9 eine weitere perspektivische Ansicht von oben des Sockelelements gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung und
• Figur 10 eine schematische Seitenansicht einer zweiten Ausführungsform einer Spraydose mit Sprühvorrichtung gemäß der vorliegenden Erfindung;

The invention will be explained with reference to an embodiment along with the accompanying drawings. This shows:

• FIG. 1 a partial perspective view of a spray can;
• FIG. 2 a top perspective view of a socket member according to a preferred embodiment of the present invention;
• FIG. 3 a bottom perspective view of the socket member according to a preferred embodiment of the present invention;
• FIG. 4 a top perspective view of a twisting head according to a preferred embodiment of the present invention;
• FIG. 5 a bottom perspective view of the twisting head according to a preferred embodiment of the present invention;
• FIG. 6 a perspective view of a spray device in a blocking position according to a preferred embodiment of the present invention;
• FIG. 7 a perspective view of a spray device in a release position according to a preferred embodiment of the present invention;
• FIG. 8 another perspective top view of the base member according to a preferred embodiment of the present invention;
• FIG. 9 another perspective top view of the base member according to a preferred embodiment of the present invention and
• FIG. 10 a schematic side view of a second embodiment of a spray can with spray device according to the present invention;

In the following, directions refer to the drawing plane or to the rotationally symmetric axis L of a spray can, as in FIG FIG. 1 shown.

Detailed Description of a Preferred Embodiment

The FIGS. 2 to 9 show a preferred embodiment of a spray device 5 according to the present invention.

The spray device 5 for a spray can 1 has a base element 10 and a twisting head 20. In this case, the base element 10 is arranged with its underside fixed to an upper spray can section 2.

For this purpose, an annular trained, circumferential first edge 2a and at the end of the upper spray can section 2 an annular trained, circumferential second edge 2b is arranged on the spray can 1 in an upper spray can section 2. The first edge 2a has a smaller diameter than the second edge 2b and is arranged axially offset from the opposite.

The underside of the base element 10 has a circumferential, inwardly directed base element profile 18 and arranged on the edge of a central bore, arcuate base element clamping hooks 12. The base element clamping hooks 12 have a wedge-shaped profile and extend downwardly from the central bore. In addition, adjacent to the circumferential, inwardly directed base element profile 18 adjacent inner base element ribs 11 are formed.

By the inwardly directed base element profile 18 and the arcuate base element clamping hook 12, the base element 10 is arranged with its underside on the upper spray can section 2 form-fitting and frictionally clamping. The inner base element ribs 11 limit the distance between the base element 10 and the upper aerosol can section 2.

On the upper side of the base element 10, a ring-segment or fan-shaped blocking surface 16a is arranged on an upwardly directed formation. Adjacent thereto, a circular segment-shaped release surface 16b is formed. Between the locking surface 16a and the release surface 16b, a ring-segment-shaped base projection 17 is formed, each having a first end stop 17a formed at the ends and a second end stop 17b formed at the ends. The first end stop 17a and the second end stop 17b may also be e.g. be designed as pins or bolts. In this preferred embodiment, the blocking surface 16a, the release surface 16b and the base projection 17 each describes a ring segment with approximately 120 °; they form a circle together. Furthermore, in the wedge-shaped base projection 17 on the outside, an axially extending guide groove 17c is formed centrally and groove-shaped on the outside.

In addition, in the region of the circumference, a base element edge 13 is arranged with wedge-shaped retaining elements 13a designed to be outward. Last are still on an outer surface of the base member 10 is a locking detent element 14a and a Release latching element 15a is formed. These locking elements 14a, 15a may each have two parallel aligned, in the longitudinal axis direction L of the base member 10 extending webs. In this case, the locking detent element 14a denotes a blocking position 14 and the release latching element 15a a release position 15 of an actuator 23 prevents unwanted twisting of the rotary head 20 in the release position 15 and blocking position 14. The blocking surface 16a, the release surface 16b, the base projection 17, the first end stop 17a, the second end stopper 17b, the detent locking member 14a, and the releasing detent member 15a are integrally and integrally formed in the base member 10. In the preferred embodiment, the first end stop 17a and the second end stop 17b are formed as surfaces extending radially at both ends of the socket projection 17. On the two surfaces can be dispensed with in another embodiment. Furthermore, it is possible to dispense with the bead-shaped base element edge 13.

At the top of the twisting head 20 is a spray protection 27 cylinder jacket around the spray nozzle 25 is arranged ersteckend in the longitudinal axis L. The spray guard 27 can extend the same length as the spray nozzle 25 and fixes the spray nozzle 25 via two struts. Furthermore, the spray guard 27 has on its outer surface a ribbing formed in the longitudinal axis direction L. This increases the strength. Alternatively, the spray guard 27 may be semi-cylindrical or transverse formed as a kind of fin.

The actuator 23 is connected to the outer surface of the spray guard 27 and tilted about a film hinge 22 attached to the torque head 20. This shows FIG. 7 the actuator 23 'in the actuated position in dashed lines.

Essentially in the middle of the actuator 23 and in the longitudinal axis direction L extends on the outer surface of the turning head 20, a detent 24, directed in an arrow-shaped manner in the axial direction downwards, which projects beyond the bottom of the twisting head. In addition, are still on the outer surface of the twisting 20 in the Essentially in the longitudinal axis direction L extending grip elements 26 for easier rotation of the twisting 20 is formed. The actuator 23, the catch 24 and the spray nozzle 25 are integrally and integrally formed in the twisting head 20.

On the underside of the twisting head 20, an inwardly directed and stretchable guide profile 28 is formed in a circle on the edge of the twisting head 20. By the inwardly directed circular guide profile 28 of the rotary head 20 in positive engagement with the base element edge 13 of the base member 10, immovable or fixed in Längsachserichtung L, but between the locking position 14 of the actuator 23 and the release position 15 of the actuator 23 rotatably disposed.

The twisting head 20 has on its underside a in the longitudinal axis direction L downwardly extending mounting guide 21. At their end facing away from the turning head 20 an inwardly directed wedge-shaped curvature is formed.

For a safe and quick installation of the turning head 20 with the base element 10, the mounting guide 21 is inserted into the guide groove 17c.

Also extending in the longitudinal axis direction, a first turning head stop 29a and a second turning head stop 29b are formed. The first turning head stop 29a and the second turning head stop 29b are formed as surfaces extending in the axial direction, which are connected to one another via a ring segment with an angle of approximately 240 °.

If the turning head 20 is mounted on the base element 10, then the first turning head stop 19a forms a first stop pair with the first end stop 17a and the second turning head stop 19b forms a second stop pair with the second stop stop 17b.

If the twisting head 20 is rotated relative to the base element 10 into the release position 15, then the catch 24 can be brought into engagement with the release latching element 15a and the first rotation head stop 19a contacts the first end stop 17a. By turning the twisting head 20 in the release position 15, the actuator 23 is pivoted away from the blocking surface 16 and thereby tiltably movable in the longitudinal axis direction L. Thereby, the spray nozzle 25 is pressed against an outlet opening of the spray can 1, whereby a valve is actuated within the spray can 1 and a pressurized liquid can escape from the spray can 1 via the spray nozzle 25. The engagement of the wedge-shaped end of the mounting guide 21 in the wedge-shaped end of the base projection 17 also prevents tilting of the turning head 20 upon actuation of the actuator 23.

If the twisting head 20 is rotated relative to the base element 10 into the blocking position 14, then the catch 24 can be brought into engagement with the locking detent element 14a and the second twisting-end stop 19b contacts the second end stop 17b. By turning the turning head 20 in the blocking position 14 of the actuator 23 cooperates with the fan-shaped locking surface 16, which counteracts an actuation of the actuator 23 outside the release position 15 blocking.

According to a second embodiment, the spray nozzle 25 is formed centrally and integrally with the rotary head 20 and extends from the bottom of the rotary head 20 substantially in the longitudinal axis direction L over the top of the rotary head 20 also upwards. The spray nozzle 25 is formed substantially tubular. When the actuator 23 is not actuated, the spray nozzle 25 is arranged at an angle α which is inclined relative to the longitudinal direction of the spray can and corresponds to the angle β between the actuated actuator 23 'and the unactuated actuator 23, as in FIG FIG. 10 shown.

The advantageous embodiments described herein are merely illustrative and not limiting the scope of protection. In a modified embodiment, not shown, the end stops 17a, 17b of the socket projection are not formed as radially extending surfaces.

In further embodiments, the end stops 17a, 17b of the base projection are bolt-shaped. In a modified embodiment, not shown, the lower edge of the base element 10 has no base element profile. In a modified embodiment, not shown, the base element edge 13 has no convex outward training except the holding elements 13a.

LIST OF REFERENCE NUMBERS

1

Spray can

2

Upper spray can section

2a

first edge

2a

second edge

5

sprayer

10

base element

11

Base element ribs

12

Base element clamping hook

13

Base element edge

13a

retaining element

14

blocking position

14a

Lock catch element

15

release position

15a

Release latch element

16a

blocking surface

16b

release surface

17

base lead

17a

first end stop

17b

second end stop

17c

guide

18

Base member profile

19

Base element projection

20

twisting head

21

mounting guide

22

film hinge

23

actuator

23 '

Actuator in operating position

24

notch

25

spray nozzle

26

handle element

27

spray protection

28

guide profile

29a

first turning head stop

29b

second turning head stop

L

longitudinal axis

Claims (14)

Spray device (5) for a pressure vessel, in particular for a spray can, with
a base element (10) which is fixedly arranged with its underside on an upper pressure vessel section (2), wherein on the upper side of the base element (10) a blocking surface (16a), a release surface (16b) and at least one end stop are formed, and
a twisting head (20) which is arranged rotatably on the upper side of the base element (10), wherein the twisting head (20) has an actuator (23) and a spray nozzle (25) and between a blocking position (14) of the actuator (23) and a release position (15) of the actuator (23) is rotatable. Spray device (5) according to claim 1, wherein the blocking surface of the base element (10) is formed substantially ring segment or fan-shaped and cooperating in the blocking position with the rotary head (20) arranged actuator (23) blocking. Spray device (5) according to one of the preceding claims, wherein on an outer surface of the base element (10) a locking detent element (14a), a release latching element (15a) and on an outer surface of the twisting head (20), a detent (24) are formed, wherein the catch (24) in the blocking position (14) with the Sperrrastelement (14a) and in the release position (15) with the Freigaberastelement (15a) is engageable. Spray device (5) according to one of the preceding claims, wherein on a base projection (17) a first end stop (17a) and a second end stop (17b) are formed, which cooperate with a first Verdrehkopfanschlag (29a) and a second Verdrehkopfanschlag (29b). Spray device (5) according to one of the preceding claims, wherein at the base element (10) are formed Sockelelementklemmhaken (12) and / or base element projections (19) with a on the upper pressure vessel portion (2) formed first edge (2a) for axially fixing the base element (10) are latchingly engageable. Spray device (5) according to one of the preceding claims, wherein retaining elements (13a) are formed on the upper side of the base element (10), which are freely rotatable but axially fixedly engaged with a guide profile (28) formed on the turning head (20). Spray device (5) according to one of the preceding claims, wherein the spray nozzle (25) is arranged with the actuator (23) not actuated about an angle α inclined relative to the longitudinal axis direction L of the spray can, which corresponds to the angle β between the actuated actuator (23) and the unactuated actuator (23) corresponds. Spray device (5) according to one of the preceding claims,
wherein grip elements (26) on the outer surface of the twisting head (20) are formed. A spray device (5) according to any one of the preceding claims, wherein a spray guard (27) extends around the spray nozzle (25). Spray device (5) according to one of the preceding claims, wherein a mounting guide (21) protruding into the interior of the turning head (20) and a complementary guide groove (17c) are provided on the base element (17). A spray device (5) according to any one of the preceding claims, wherein the blocking surface (16a), the locking detent member (14a) and the releasing detent member (14b) are integrally and integrally formed with the base member (10). A spray device (5) according to any one of the preceding claims, wherein the actuator (23), the spray guard (27) and the spray nozzle (25) are rigidly connected together. Spray device (5) according to one of the preceding claims, wherein the actuator (23) via a film hinge (22) is tiltably connected to the twisting head (20). Spray can with spray device (5) according to one of the preceding claims.

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