ES2869126T3 - Safety diffuser hood - Google Patents

Abstract

Safety cap (1) in the shape of a dome and designed to fit into the apex of an aerosol can (100), said cap being provided with a lateral opening (2, 2a, 2b) for access to a button (6) maneuvering of a valve (101) of the can, said cap being also provided at its apex with an axial opening (3) for access to an axial diffuser device (4) that is mounted on an outlet tube (102) of the valve (101) in the extension of an axis of revolution of the can, and said cap being further provided with a sheet (5) for protection of said lateral opening (2a, 2b), maneuverable between a position of masking the opening lateral and a position of free access to the lateral opening, characterized in that the cap made in two parts includes a base (20) provided with a crown (21) that forms a lower part of the dome and includes an attached cover (30) that is mounted on the base (20) in the extension of the crown, forming an upper part of the do mo and comprising the axial opening (3); the lateral opening (2a, 2b) being made at least in part (2a) in the lid and at least in part (2b) in the crown, the sheet (5) being internal to the cap and slidingly mounted on the sliders, respectively lower (22a) on the base and upper (22b) on the lid.

Description

DESCRIPTION

Safety diffuser hood

Field of the invention

The present invention relates to an improved safety diffuser cap for an aerosol canister and an aerosol canister comprising such a cap.

Technological background

Document EP 0 818 401 A1 describes a safety cap with axial outlet for an aerosol can comprising a fixed dome with connection means in the setting of a can cup and a movable dome with a profile matching that of the fixed dome. and mounted by rotation with respect to the fixed dome, the mobile dome comprises an opening for access to an actuating button of the valve of the canister integral with the fixed dome, the mobile dome can adopt an open position by rotation on the fixed dome that frees access to the diffuser and a closed position that prevents access to the diffuser.

Document EP 1092 650 A1 describes in one of its embodiments a radial outlet safety cap for an aerosol can that comprises a fixed dome in which a diffuser / actuating button assembly of a canister valve is mounted, comprising the dome fixes an access opening to the button closed through a rotating blade around a vertical axis at the apex of the dome and which slides inside the dome.

According to a different principle of the present invention, document FR 2 971 997 A1 describes a one-piece cylindrical aerosol cap. On this cap is mounted a rotating ring provided with internal pins received in ramps at the periphery of the cylindrical cap, so that the outer ring releases or conceals an opening of the cap by means of a helical movement.

Brief description of the invention.

The subject of the present invention is a safety cap for a compact and robust aerosol canister and for which access to an operating button of a canister valve can be blocked by an internal sliding blade of the cap.

To do this, the present invention proposes a dome-shaped safety cap that fits into an apex of an aerosol can, said cap being provided with a side opening for access to an operating button of a canister valve. , provided at its vertex with an axial opening for access to an axial diffuser device that is mounted on an outlet tube of the valve in the extension of an axis of revolution of the can, and provided with a protection sheet for said lateral opening , maneuverable between a position of masking the side opening and a position of free access to the side opening.

According to the invention, on the one hand the two-part hood includes a base provided with a crown that forms a lower part of the dome and includes an attached cover that is mounted on the base in the extension of the crown, the cover forms an upper part of the dome and comprises the axial opening and, on the other hand, the lateral opening is made at least in part in the cover and at most in part in the crown, the sheet being internal to the cap and sliding mounted on the sliders respectively lower in the base and top on the lid.

Advantageously, the base is provided with the axial diffuser device and with a central part that forms a wall with a semicircular section around the axial diffuser device, the axial diffuser device being connected to the central part by one or more flexible links. The axial diffuser device also includes a radial extension that forms the said operating button.

Advantageously, the crown surrounds and protects the diffuser and operating button assembly on its periphery and is connected to said wall by at least one platform and / or at least one rib.

According to an advantageous embodiment, the semicircular central part extends towards the can by means of a skirt provided with projections for fixing the base in a setting around the valve of the can.

Preferably, the axial opening in the cap is a circular opening, the edge of which extends into the interior of the cap by a chimney-shaped annular wall.

Advantageously, the annular wall is attached to the semicircular wall around the diffuser device so as to form an anti-spray channel.

According to a particular embodiment, the annular wall and the semicircular wall include mutual hooking means adapted to secure the base and the cover.

Advantageously, the upper edge of the crown and the lower edge of the lid are provided with mutual engagement means adapted to secure the base and the lid.

In order to allow two stable positions of the blade to be realized in open and closed position, the ends of the lower slide and of the blade are preferably provided with an engagement device that defines two stable positions of the retention end of the blade.

Advantageously, the sheet slides inside the cap and moves in rotation around the axis of revolution of the can.

According to a particular embodiment, the crown includes an internal flange for engagement with a peripheral setting of the can.

The invention applies to a diffuser can equipped with a cap comprising one or other of the characteristics of the invention.

Brief description of the drawings

Other characteristics and advantages of the invention will become apparent upon reading the following description of a non-limiting example of embodiment of the invention with reference to the drawings that represent:

in Figure 1: a perspective view of an aerosol can and a cap of the invention;

in Figure 2: a perspective view from above of a cap according to an exemplary embodiment disassembled; in Figure 3, a perspective view from below of the cap of Figure 2 removed;

in Figure 4: a top view of the cap of Figure 2 removed;

in Figure 5: a variant embodiment of the cover and the sheet of Figure 3;

in Figure 6: a variant embodiment of the base of Figure 2.

Detailed description of the embodiments of the invention.

The invention relates to a safety cap for an aerosol can 100 of a known type such as, for example, represented in Figure 1.

Canister 100 is a cylindrical canister comprising an axial valve 101 in a cup set in the apex of a dome 103 in turn set on the body of canister 100. The valve includes a product outlet tube 102. The dome-shaped safety cap 1 is in turn fixed on the can. The cap fits into the setting 110 between the canister and the dome and / or the setting 105 between the cup and the dome, as will be seen below.

The cap 1 is provided at its vertex with an axial opening 3 for access to an axial diffuser device 4 that is mounted on the outlet tube 102 of the valve 101 in the extension of an axis of revolution of the can and that allows the exit of the product to be sprayed.

According to the invention, the hood is provided with a side opening 2 closed or open through a sheet 5, internal to the hood and maneuverable between a position of masking the side opening and a position of free access to the side opening.

According to Figure 2, the opening gives access to a button 6 for operating the canister valve 101 through the axial diffuser 4 which comprises a tube that traditionally receives the valve outlet tube, the operation of the button allows force the valve tube open.

Still according to Figure 2, the cap includes a base 20 provided with a crown 21 that forms a lower part of the dome and an attached cover 30 that forms the upper part of the dome and that is mounted on the base 20 in the extension of the dome. Crown.

The cover forms an upper part of the dome and includes the axial opening 3 facing the outlet of the diffuser 4 and allowing the product to be sprayed out.

The axial opening 3 in the cover is a circular opening, the edge of which extends into the cover through an annular wall 32 in the form of a chimney.

The side opening, for its part, according to the example, includes an upper part 2a in the lid and a lower part 2b in the crown, and the sheet 5 is mounted slidably on the sliders 22a, 22b. As is especially represented in Figures 2 and 4 of the exemplary embodiment, a first so-called lower slider 22a is made at the base by means of a channel that borders the inner edge of the crown. According to Figure 3, the second slider 22b called upper it is made between a flange of the opening in the lid and an internal weatherstrip of the lid 220b. According to Figure 5, the second slide 22c is directly constituted by the junction between the upper inner part of the cover 30a and the upper part of the inner chimney-shaped wall 32.

The sheet 5 slides inside the cap 1 and moves in rotation around the axis of revolution of the can, the sliders extending well beyond the opening to accompany the sheet 5 over its entire travel.

According to the example of Figure 4, to define two stable sash retention end positions, the sash fully closed and the sash completely cleared to clear the opening, the ends of the lower slider 22a and the sash are provided with a nesting device 51, 52. This device includes spring hooks 51 at the lower corners of the cap and stops 52 for engaging the hooks at the end of the slide 22a.

This system ensures sufficient retention of the cap so that it does not shift during handling of the can, but sufficiently reduced to allow the cap to be maneuvered with a finger. In addition, the snap hooks and the locking stops allow a sensitive return after the insertion and disengagement of the cap.

In the alternative embodiment, the nesting device can be made at the level of the lid.

With reference to Figures 2 and 4, the base is provided with the axial diffuser device 4 and with a central part that forms a wall 23 of semicircular section around the axial diffuser device.

According to the example of Figure 2, the wall 23 and an annular base 23a that supports it are connected to the crown 21 by at least one beam made up of a platform 25 and ribs 251,252. According to the example shown, the platform 25 is connected to the annular base 23a and the ribs 251, 252 that reinforce it are connected to the annular base and to the wall 23.

In the variant, according to Figure 6, the platform 25 is omitted and the more numerous ribs 253 make only the connection between the annular base 23a that supports the wall 23 of the central body and the crown 21.

The axial diffuser device 4 is, for its part, integral with a semicircular plate 4a that extends radially over approximately a quarter of its periphery by the pushbutton 6.

The axial diffuser device is connected, through the plate 4a, to the central part by one or more flexible links 24 that form a spring.

Therefore, the wall 23 partially surrounds the axial diffuser and protects the inside of the cap from product projections and the crown 21 surrounds and protects the diffuser and operating button assembly at its periphery.

On the lower part of the cap, with reference to Figure 3, the semicircular central part extends towards the can by means of a skirt 23a provided with flanges 27 for fixing the base in a setting 105 around the valve of the can and represented in Figure 1. This allows the cap to be securely hooked onto the can as close to the valve as possible.

Complementarily or alternatively, the crown includes an internal flange 210 for engagement with a peripheral crimp (110) of the canister.

In addition to fixing the cap, the fact that the crown covers the top of the can at the level of its dome / can body setting makes it possible to prevent the crown from being pushed inwards and prevents the cap from being raised.

Returning to the top of the cap, the cover 30 as seen previously, includes an annular wall 32 that forms a chimney that ends at the top of the cover through the axial opening 3 and visible especially in Figure 3 .

A lower part of this annular wall 32 is attached to the semicircular wall 23 around the diffuser device 4 and is shown in Figure 2 so as to form an anti-spray channel.

The lower end of the annular wall 32 surrounds the semicircular wall 23, the annular wall and the semicircular wall 23 comprise mutual engagement means 28, 33 adapted to secure the base and the lid.

According to the example, the means 33 for hooking the annular wall are constituted by an annular flange while the means for hooking the semicircular wall 23 are constituted by projections 28 with ramps distributed on the perimeter of the semicircular wall, allowing an engagement easy cover on the base and effective retention of this cover on the base.

More visible in Figure 6, the ribs 28a that end under the projections make abutment stops of the annular flange 33 to avoid a forcing of the cover 30 during, for example, accidental bearing on the latter.

To complete the fixing of the cover on the base, the upper edge of the crown and the lower edge of the cover are also provided with means 29, 34 of mutual engagement adapted to secure the base and the cover. These means in the form of tongue grooves arranged on the upper edge of the crown 21 and the lower edge of the lid can be completed by gluing or ultrasonic gluing of the lid and the base.

The hood of the invention, which is not limited to the example shown, the lateral opening can especially be made completely in the lid by reducing the height of the crown and increasing the height of the lid wall, it is easy to manufacture, robust, allows Customize the cap by selecting different colors from among the various pieces and it allows to protect the user's fingers from eventual product splashes and, especially, from paint in the case of an aerosol can of spray paint.

Claims (11)

1. Dome-shaped safety cap (1) designed to fit into the vertex of an aerosol can (100), said cap being provided with a lateral opening (2, 2a, 2b) for access to a button ( 6) for operating a valve (101) of the canister, said cap being further provided at its vertex with an axial opening (3) for access to an axial diffuser device (4) that is mounted on an outlet tube (102) of the valve (101) in the extension of an axis of revolution of the can, and said cap being also provided with a sheet (5) for protecting said lateral opening (2a, 2b), maneuverable between a position of masking of the side opening and a position of free access to the side opening, characterized in that the cap made in two parts includes a base (20) provided with a crown (21) that forms a lower part of the dome and includes an attached cover (30) which is mounted on the base (20) in the extension of the crown, forming an upper part of the dome and comprising the axial opening (3); the lateral opening (2a, 2b) being made at least in part (2a) in the cover and at least in part (2b) in the crown, the sheet (5) being internal to the cap and slidingly mounted on the respectively lower sliders (22a) at the base and top (22b) at the top. Cap according to claim 1, for which the base is provided with the axial diffuser device (4) and with a central part that forms a wall (23) with a semicircular section around the axial diffuser device, the axial diffuser device being connected to the central part by one or more flexible links (24) and comprising a radial extension that forms said operating button (6), surrounding and protecting said crown (21), the diffuser assembly and operating button in its periphery; being connected to said wall by at least one platform (25) and / or at least one rib (251, 252, 253). Cap according to claim 2, for which the semi-circular central part extends towards the can by means of a skirt (23a) provided with flanges (27) for fixing the base in a setting (105) around the valve of the can. Cap according to claim 1, 2 or 3, for which the axial opening (3) in the cap is a circular opening the edge of which extends into the cap through an annular wall (32) in the form of a chimney. Cap according to claims 2 and 4, for which the annular wall (32) joins the semicircular wall (23) around the diffuser device (4) in such a way as to form an anti-spray channel. Cap according to claim 5, for which the annular wall (32) and the semicircular wall (23) include mutual hooking means (28, 33) adapted to secure the base and the cover. Cap according to any one of the preceding claims, for which the upper edge of the crown and the lower edge of the cap are provided with mutual engagement means (29, 34) adapted to secure the base and the cap. Cap according to any one of the preceding claims, for which the ends of the lower slide (22a) and of the blade are provided with an engagement device (51, 52) defining two stable positions of the retention end of the leaf. Cap according to any one of the preceding claims, for which the sheet (5) slides inside the cap (1) and moves in rotation around the axis of revolution of the can. Cap according to any one of the preceding claims, for which the crown includes an internal flange (210) for engagement with a peripheral crimp (110) of the can. An aerosol can equipped with a cap according to any one of claims 1 to 10.