DK2682353T3

DK2682353T3 - SPRAY HEAD FOR A SPRAY BOX

Info

Publication number: DK2682353T3
Application number: DK13003279.0T
Authority: DK
Inventors: Andreas Deranco
Original assignee: Deranco Grundstücksverwaltungs Gmbh & Co Kg
Priority date: 2012-06-28
Filing date: 2013-06-27
Publication date: 2015-12-07
Also published as: EP2682353A1; DE102012012918A1; DE202012013334U1; HUE028049T2; PL2682353T3; HRP20151248T1; ES2555112T3; DE102012012918B4; EP2682353B1

Description

Field of the invention

The invention relates to a spray device for a pressure vessel, in particular for a spray can, comprising a base element and a turning head which can turn between a locking position of an actuator and a release position of the actuator.

Prior art

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

Furthermore, a spray head for a spray can is known from EP 0 818 401 B1 in which a safety cap secures the spray head against inadvertent spraying. The safety cap is disposed rotatably in a dome shape above the upper face of the spray can and in the secured state extends over the dome-shaped spray head. In this case two friction surfaces in contact with one another are produced by the dome-shaped safety cap and the dome-shaped spray head. The turning of the safety cap relative to the spray head is made difficult by penetrating particles of dirt or moisture freezing in the winter. Moreover, stacking for storage of spray cans with a dome-shaped spray head is costly. A spray head for spray cans is known from US 2007/235474 Al, in which a cap disposed on a base is again dome-shaped.

In this connection an actuating position of a spray valve is provided only at an exact turned position between the base and the cap due to engagement of a cuboid engaging element of the cap in a groove shape cut into the base. Moreover, stop faces of the cap and of the base are directed outwards and therefore are not protected against environmental influences, such as dust, ice, etc.

Against this background the object of the invention is to provide a spray device for a spray can which is made up of the smallest possible number of parts and is both simple and cost-effective to manufacture and also simple to fit and to operate. Finally in this way a stackable solution for the spray device of the spray can should be created.

This object is achieved by a spray device with the features of claim 1. Advantageous embodiments and modifications of the invention are described in the subordinate claims.

For this purpose according to the invention a spray device is provided for a pressure vessel, in particular for a spray can, comprising a base element, which can be disposed with its underside fixed on an upper pressure vessel portion, wherein on the upper face of the base element there are formed a locking surface, a release surface and at least one end stop, and a turning head, which is disposed so as to turn on the upper face of the base element, wherein the turning head has an actuator and a spray nozzle and can turn between a locking position of the actuator and a release position of the actuator. In this case the locking surface, the release surface and end stops can comprise three circular segment sections and together describe a circle. In this case each circular segment section can cover 120°. The spray nozzle can be constructed integrally with the turning head. Furthermore the spray nozzle can extend in a predominantly axial direction.

The two-part spray device can be formed in a plastic injection moulding process. Since the base element and the turning head have few surfaces in contact with one another, only limited forces are required for rotation. Moreover, the turning of the safety cap relative to the spray head can hardly be hampered by penetrating particles of dirt or moisture freezing in the winter. Furthermore, the stacking for storage of the spray cans with this turning head can be simplified. Moreover, the actuator can have a plate of large surface area, so that it can also be actuated with gloves, for example winter gloves.

The base element and the turning head can be constructed so that they can be attached to standard spray cans, for example according to European standard EN 14847. Thus the spray can is universally usable and is suitable for a wide range of applications.

The spray device disposed on a spray can may be introduced into a recess formed on the underneath face of a spray can and acts for centring and support during stacking. This is possible in particular since the spray nozzle only projects slightly over the contour of the turning head. The nozzle generally only projects over the contour of the turning head by a few millimetres, preferably one centimetre. Advantageously the base element has a locking surface which is formed substantially in the shape of a ring segment or a fan and which in the locking position co-operates for locking with the actuator disposed on the turning head. In this way an inadvertent actuation of the actuator can be prevented in a simple and cost-effective manner are being. Moreover, simple handling is also provided. A locking catch element and a release catch element are formed on an outer surface of the base element and a catch is formed on an outer surface of the turning head, wherein in the locking position the catch can be brought into engagement with the locking catch element and in the release position it can be brought into engagement with the release catch element. In this way again the handling is simplified even under difficult weather conditions and operating errors are reduced. Furthermore, the spray device can also be operated very simply with one hand. A first end stop and a second end stop which co-operate with a first turning head stop and a second turning head stop are advantageously formed on a base projection. In this case the first turning head stop and the second turning head stop can be formed on an inner face of the turning head. This in turn simplifies the handling under difficult weather conditions and prevents an operating error.

Advantageously base element clamping hooks and/or base element projections, which can be brought into latching engagement with a first edge formed on the upper pressure vessel portion for axial fixing of the base element, are formed on the base element. As a result the base element is fixed in the axial direction to the spray can and is relatively difficult to turn relative to the spray can. Also for example O rings or similar components which increase the friction can be disposed between the spray can and the base element in order to further reduce turning of the base element relative to the spray can. Other positively engaging arrangements can be provided between the base element and the spray can.

Holding elements are advantageously formed on the upper face of the base element and are in engagement, so that they can turn freely but are fixed axially, with a guide profile formed on the turning head. As a result the turning head can turn slightly relative to the base element, wherein the turning head is fixed on the spray can in the axial direction by means of the base element.

When the actuator is not actuated the spray nozzle is advantageously inclined relative to the longitudinal axial direction of the spray can by an angle a which corresponds to the angle B between the actuated actuator and the non-actuated actuator. In this way the orientation of the spray nozzle when the actuator is actuated corresponds to the longitudinal axial direction of the spray can and simplifies accurate spraying.

Gripping elements are advantageously formed on the outer surface of the turning head, for example in the form of parallel longitudinal grooves, webs or in the form of a corrugation or of concave or convex bumps. Thus the turning of the turning head is again simplified relative to the base element or the spray can. Even in the most severe weather conditions, which for example require the wearing of protective gloves, a simple and reliable operation of the spray can is provided. A spray guard advantageously extends around the spray nozzle. This spray guard can be constructed substantially in the form of a cylindrical casing on the upper face of the turning head. In this way unintentional spraying of a hand operating the spray head can be reduced. In this case the spray guard can extend in the axial direction, concentrically with respect to the spray nozzle. In this case the spray guard can extend somewhat beyond the spray nozzle.

An installation guide projecting into the interior of the turning head and a complementary guide groove on the base element are advantageously provided. In this way the position of the turning head relative to the base element during the installation is unambiguously fixed and incorrect installation, for example jamming or the breaking of plastic lugs, is prevented. The installation time is simultaneously reduced.

The locking surface, the locking catch element and the release catch element are formed in one piece and integrally with the base element. As a result the production and installation costs can be lowered.

The actuator, the spray guard and the spray nozzle are advantageously rigidly connected to one another. The actuator, the spray guard and the spray nozzle are can be constructed in one piece and integrally with the turning head. Thus the production and installation costs can again be lowered.

The actuator is advantageously connected pivotably by means of a film hinge to the turning head. This enables a compact and simple construction of the spray device as well as simple operation and avoids spraying of the user.

The base element can advantageously be fitted and latched on a standard spray can, for example according to EN 14847, and the turning head can be fitted and latched on the base element. Thus the spray device can be used universally, can be installed very quickly and simply and at the same time can be produced cost-effectively.

The spray device according to the invention is advantageously disposed on a spray can. Thus all the said advantages can be linked when the spray device with the spray can is actuated.

Brief description of the drawings

The invention is explained with reference to an embodiment together with the appended drawings. In the drawings:

Figure 1 shows a perspective partial view of a spray can;

Figure 2 shows a perspective view from above of a base element according to a preferred embodiment of the present invention;

Figure 3 shows a perspective view from below of the base element according to a preferred embodiment of the present invention;

Figure 4 shows a perspective view from above of a turning head according to a preferred embodiment of the present invention;

Figure 5 shows a perspective view from below of the turning head according to a preferred embodiment of the present invention;

Figure 6 shows a perspective view of a spray device in a locking position according to a preferred embodiment of the present invention;

Figure 7 shows a perspective view of a spray device in a release position according to a preferred embodiment of the present invention;

Figure 8 shows a further perspective view from above of the base element according to a preferred embodiment of the present invention;

Figure 9 shows a further perspective view from above of the base element according to a preferred embodiment of the present invention; and

Figure 10 shows a schematic side view of a second embodiment of a spray can with spray device according to the present invention.

In the description below, directional details relate to the drawing plane and/or to the rotationally symmetrical axis L of a spray can as illustrated in Figure 1.

Detailed description of a preferred embodiment

Figures 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 turning head 20. In this case the base element 10 is disposed fixedly with its underside on an upper spray can section 2.

For this purpose an annular circumferential first edge 2a is disposed on the spray can 1 in an upper spray can section 2 and an annular circumferential second edge 2b is disposed at the end of the upper spray can section 2. The first edge 2a has a smaller diameter than the second edge 2b and is axially offset with respect thereto.

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

The base element 10 is disposed so as to be clamped by positive engagement and frictional connection with its underside on the upper spray can section 2 by the inwardly directed base element profile 18 and the arcuate base element clamping hook 12. In this case the inner base element ribs 11 delimit the distance between the base element 10 and the upper spray can section 2. A locking surface 16a in the shape of an annular segment or a fan is disposed on an upwardly directed formation on the upper face of the base element 10. Adjacent to this is constructed a release surface 16b in the form of a circular segment. A base projection 17 with a first end stop 17a formed on each of the ends and a second end stop 17b formed on each of the ends is constructed between the locking surface 16a and the release surface 16b. The first end stop 17a and the second end stop 17b can also be constructed for example as pins or bolts. In this preferred embodiment the locking surface 16a, the release surface 16b and the base projection 17 in each case describe an annular or circular segment of respectively approximately 120°; thus together they form a circle. Furthermore, in the wedge-shaped base projection 17 on the outer face an axially extending guide groove 17c is constructed centrally in the form of a groove on the outer face.

In addition, a base element edge 13 with holding elements 13a formed outwardly in a wedge shape is disposed in the region of the circumference. Finally, a locking catch element 14a and a release catch element 15a are formed on an outer surface of the base element 10. These latching elements 14a, 15a can each have two webs aligned parallel to one another and extending in the longitudinal axial direction L of the base element 10. In this case the locking catch element 14a designates a locking position 14 and the release catch element 15a designates a release position 15 of an actuator 23 preventing the unintentional turning of the turning head 20 into the release position 15 or the locking position 14. The locking surface 16a, the release surface 16b, the base projection 17, the first end stop 17a, the second end stop 17b, the locking catch element 14a and the release catch element 15a are formed in one piece and integrally in the base element 10. In the preferred embodiment the first end stop 17a and the second end stop 17b are constructed as surfaces extending radially on the two ends of the base projection 17. In another embodiment the two surfaces can be omitted. Furthermore, the base element edge 13 constructed in the form of a bead can be omitted. A spray guard 27 in the form of a cylindrical casing is disposed around the spray nozzle 25 and extends in the longitudinal axial direction L on the upper face of the turning head 20. The spray guard 27 can extend over the same length as the spray nozzle 25 and fixes the spray nozzle 25 by means of two struts. Furthermore, the spray guard 27 has ribs formed in the longitudinal axial direction L on its outer surface. In this way the strength is increased. Alternatively the spray guard 27 can be constructed in semi-cylindrical form or transversely as a type of fin.

The actuator 23 is connected to the outer surface of the spray guard 27 and can pivot above that surface by means of a film hinge 22 on the turning head 20. In this case Figure 7 shows the actuator 23' in the actuating position represented by a broken line. A catch 24, directed downwards in the axial direction in the form of an arrow and projecting beyond the underside of the turning head, extends substantially centrally on the actuator 23 and in the longitudinal axial direction L on the outer surface of the turning head 20. In addition, gripping elements 26 for simpler turning of the turning head 20 are also constructed on the outer surface of the turning head 20 and extend substantially in the longitudinal axial direction L. The actuator 23, the catch 24 and the spray nozzle 25 are constructed in one piece and integrally in the turning head 20.

On the underside of the turning head 20 an inwardly directed and expandable guide profile 28 is constructed in circular form on the edge of the turning head 20. Due to the inwardly directed circular guide profile 28 the turning head 20 is in positive engagement with the base element edge 13 of the base element 10, is immovable or fixed in the longitudinal axial direction L, but can turn between the locking position 14 of the actuator 23 and the release position 15 of the actuator 23.

The turning head 20 has on its underside an installation guide 21 which extends downwards in the longitudinal axial direction L. On the end thereof facing away from the turning head 20 an inwardly directed wedge-shaped bulge is constructed.

The installation guide 21 is inserted into the guide groove 17c for secure and quick installation of the turning head 20 with the base element 10. A first turning head stop 29a and a second turning head stop 29b likewise extend in the longitudinal axial direction. The first turning head stop 29a and the second turning head stop 29b are constructed as surfaces extending in the axial direction which are connected to one another by means of a ring segment at an angle of approximately 240°.

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

If the turning head 20 is turned relative to the base element 10 into the release position 15, then the catch 24 can be brought into engagement with the release catch element 15a and the first turning head stop 19a touches the first end stop 17a. By the turning of the turning head 20 into the release position 15 the actuator 23 is swivelled away from the locking surface 16 and as a result is pivotably movable in the longitudinal axial direction L. As a result the spray nozzle 25 is pressed against a discharge opening of the spray can 1, so that a valve inside the spray can 1 is actuated and a pressurised liquid can escape from the spray can 1 via the spray nozzle 25. Moreover, the engagement of the wedge-shaped end of the installation guide 21 in the wedge-shaped end of the base projection 17 prevents tilting of the turning head 20 when the actuator 23 is actuated.

If the turning head 20 is turned relative to the base element 10 into the locking position 14, then the catch 24 can be brought into engagement with the locking catch element 14a and the second turning head stop 19b touches the second end stop 17b. Due to the turning of the turning head 20 into the locking position 14 the actuator 23 co-operates with the fan-shaped locking surface 16 which has a blocking effect to counteract actuation of the actuator 23 outside the release position 15.

According to a second embodiment the spray nozzle 25 is constructed centrally and in one piece with the turning head 20 and extends from the underside of the turning head 20 substantially in the longitudinal axial direction L upwards beyond the upper face of the turning head 20. The spray nozzle 25 is of substantially tubular shape. When the actuator 23 is not actuated the spray nozzle 25 is inclined relative to the longitudinal axial direction L of the spray can by an angle a which corresponds to the angle B between the actuated actuator 23 and the non-actuated actuator 23, as shown in Figure 10.

The advantageous embodiments described here serve merely for explanation and do not constitute any limitation of the scope of protection. In a modified embodiment which is not illustrated the end stops 17a, 17b of the base projection are not constructed as radially extending surfaces.

In further embodiments the end stops 17a, 17b of the base projection are constructed in the form of bolts. In a modified embodiment which is not illustrated the lower edge of the base element 10 does not have a base element profile. In a modified embodiment which is not illustrated the base element edge 13 does not have an outwardly curved formation outside the holding elements 13 a.

List of reference signs 1 spray can 2 upper spray can section 2a first edge 2a second edge 5 spray device 10 base element 11 base element ribs 12 base element clamping hook 13 base element edge 13a holding element 14 locking position 14a locking catch element 15 release position 15a release catch element 16a locking surface 16b release surface 17 base projection 17a first end stop 17b second end stop 17c guide groove 18 base element profile 19 base element proj ection 20 turning head 21 installation guide 22 film hinge 23 actuator 23' actuator in actuating position 24 catch 25 spray nozzle 26 gripping element 27 spray guard 28 guide profile 29a first turning head stop 29b second turning head stop L longitudinal axis

Claims

A spray container (5) for a pressure vessel, particularly for a spray can, with a base element (10) which can be placed with its underside on an upper pressure vessel section (2), a ring segment forming on the upper side of the base element (10). or fan-shaped locking surface (16a) by an upwardly extending axial configuration, a circular segment release surface (16b), and a first end stop (17a) and a further end stop (17b) between the locking surface (16a) ) and the release surface (16b), which end stops are formed by upwardly extending axial designs, and a pivot head (20) pivotally located on the upper side of the base member (10), the pivot head (20) being provided. with an actuator (23), a spray nozzle (25) and a spray guard (27) extending around the spray nozzle (25) can be rotated between a locking position (14) for the actuator (23) and a release position (15) for the actuator (23), and id an actuator (23) is pivotally connected to the pivot head (20) and, independently of the pivot head (20), can move substantially axially in the release position (15).

The spraying device (5) according to claim 1, wherein the locking surface of the base member (10) in the locking position cooperates in blocking with the actuator (23) located on the swivel head (20).

Spraying device (5) according to one of the preceding claims, in which a locking element (14a), a release-engaging element (15a) and a notch (24) on the outer surface of the base element (10) are formed. ), in which the notch (24) in the locking position (14) can be engaged with the locking engagement element (14a) and in the release position (15) with the release engaging element (15a).

Spraying device (5) according to one of the preceding claims, wherein the first end stop (17a) and the additional end stop (17b) are formed as a base projection (17) which cooperates with a first pivot head stop (29a) and a further turn the head stop (29b).

Spraying device (5) according to one of the preceding claims, in which socket element clamping hooks (12) and / or socket element projections (19) are provided, which can be lockably engaged by a first edge (2a) which is formed on the upper pressure vessel section (2) for axial fixation of the base element (10).

Spraying device (5) according to one of the preceding claims, in which holding elements (13a) which are freely rotatable but fixed in axial direction are arranged on the upper side of the base element (10) which are engaged with a guide profile (28) which is formed on the swivel head (20).

A spray device (5) according to any one of the preceding claims, wherein the spray nozzle (25) extends substantially in the axial direction.

A spray device (5) according to any one of the preceding claims, wherein the spray nozzle (25) is located at an unactivated actuator (23) at an angle α which inclines with respect to the longitudinal axis L of the spray can and which corresponds to the angle β between activated actuator (23) and not actuated actuator (23).

Spraying device (5) according to one of the preceding claims, in which gripping elements (26) are formed on the outer surface of the turning head (20).

The spraying device (5) according to one of the preceding claims, wherein a mounting guide (21) is provided which projects into the interior of the turning head (20) and on the base element (17) a complementary guide groove (17c).

Spraying device (5) according to one of the preceding claims, in which the locking surface (16a), the locking element (14a) and the release engaging element (15a) are integrally formed and integral with the base element (10).

A spray device (5) according to one of the preceding claims, in which the actuator (23), the spray guard (27) and the spray nozzle (25) are connected motionless to each other.

The spraying device (5) according to any one of the preceding claims, wherein the actuator (23) is connected via a film hinge (22) tiltably to the turning head (20).

Spray can with spray device (5) according to one of the preceding claims.