FR2886172A1 - MULTI-JET DIFFUSER DEVICE FOR AEROSOL BOMBS - Google Patents

Abstract

The device (1) has a cap (3) with a product distributing and operating device (4). The device has a push button (21) for operating a jet (5) of a valve (6) of an aerosol container (2). A duct (7) has ends (7a, 7b), where the end (7b) distributes a product. The end (7b) opens in a product outlet and receiving housing with many nozzles of diffusion outlet selected one by one. The nozzles are arranged on a rotating disk (12). A return unit of the disk is adapted to apply the disk on a support plate.

Description

MULTI-JET DIFFUSER DEVICE FOR AEROSOL BOMBS

  The present invention relates to a multi-jet diffuser device for aerosol can and is particularly applicable to an aerosol can comprising a cap provided with such a diffuser.

  There are devices for delivering jets of liquids or aerosols of various shapes.

  The shape of the jet in the aerosol diffusion is of great importance, particularly in the case of paint aerosols where, in particular for aesthetic reasons or surface coverage to be painted, the user wishes to be able to adapt the jet according to the type work to be done. Depending on the applications, jets more or less spread will be chosen, for example solid jets or flat jets or fogs more or less focused.

  To adjust the focus of a jet it is already known in the case of paint spray guns to use adjustable needle devices or devices for adapting nozzles of varying shape on a diffusion head.

  In the case of aerosol cans having a pressure vessel and a valve at the top of the container, it is known to provide different nozzles directly on the valve.

  In the case of water spraying devices, for example for watering, it is known to make rotating barrel devices such as the device described in US 2003/0042331 A1.

  Such a device comprising a head, a rotatable hood provided with nozzles and an intermediate plate, the rotation of the hood allowing the facing of a given nozzle with a water inlet opening, is not applicable to a device aerosol dispenser because the principle of this device for which the water inlet opening disposed at a distance from the nozzles does not provide a seal and accuracy sufficient for applications where aerosols are used.

  In the case of aerosol cans, it is also common to have a cover on the top of the container comprising the product to be diffused, this cover being provided with a large control button to provide good ergonomics to the use, in particular for professional aerosols.

  The cover comprising the diffuser and the operating knob and is generally forcibly mounted on the top of the container which makes it difficult to remove and exchange.

  In addition, in the case of aerosol cans with bonnet is that to use a jet selection system, it is necessary to direct the product from the valve of the container containing the pressurized aerosol to the diffusion nozzle.

  The object of the present invention is to provide a multi-jet diffuser adapted for the diffusion of aerosols, of simple and inexpensive constitution, integrated into a hood fixed on an aerosol can.

  To do this, the present invention relates to a multi-jet diffuser device, for aerosol dispensing spray of a product, comprising a cover, provided with a device for operating a nozzle of a valve of the bomb container. aerosol and dispensing device, said maneuvering and dispensing device comprising a conduit, provided with a first end, sealingly fitting on the nozzle, and provided with a second product dispensing end, characterized in that said second end opens into a product outlet housing and receives a plurality of selectable nozzle nozzles one by one.

  More particularly, the tips of the device according to the invention comprise a diffusion channel positioned facing the conduit and the housing has a complementary hollow shape of a rear part of the end pieces so as to seal around the connection between the leads and the channel.

  According to a particular embodiment of the invention, the tips of the nozzles are arranged on a rotating wafer positioned on a support plate of the operating device, the support plate being provided with a plurality of housings comprising on the one hand, said outlet housing of the product and, on the other hand, blind housings for receiving unselected nozzle tips.

  The device according to the invention for which the conduit connects seamlessly nozzle tips to the nozzle provides a seal compatible with the diffusion under a steady flow of finely atomized products and under significant pressures such as paints.

  Other characteristics and advantages of the invention will be better understood on reading the following description of a nonlimiting exemplary embodiment of the invention with reference to the drawings which show: in FIG. 1: a partial sectional view a first embodiment of the invention with schematic views of front, rear and side; in FIGS. 2A and 2B: a sectional front view and a perspective bottom view of a second embodiment; in FIGS. 3A and 3B: side cutaway detail views of the devices of FIGS. 1 and 2; in FIGS. 4A and 4B: a wheel of the device of FIG. 2A seen from the front in two positions; in FIGS. 5A and 5B: a view similar to the view of FIG. 3 for the slab positions of FIGS. 4A and 4B; in Figure 6: an exploded view of a screw device according to the invention having a distribution plate at several angles; in FIGS. 7A, 7B, 7C: perspective and sectional views according to two different angles of the receiving face of the wafer of FIG. 6; Figure 8 is a schematic view of an alternative embodiment of Figure 3A.

  The multi-jet diffuser device 1, for aerosol dispensing spray of a product, for example a liquid sprayed product such as a paint, according to the invention is shown according to the general views of FIG. 1 for a first embodiment.

  The device comprises a cover 3 and a device 4 for maneuvering and dispensing the product.

  The maneuvering and dispensing device comprises a pusher 21, large control button, for driving a nozzle 5 of a valve 6 of a container 2 aerosol type known per se.

  The maneuvering and dispensing device comprises a conduit 7 5 for transporting the product to a diffusion nozzle.

  The conduit is provided with a first end 7a, sealingly fitting on the nozzle 5, and is provided with a second end 7b of product distribution.

  According to the example shown, the operating device is made in one piece with the cover, a spring hinge 18 for tilting the operating device and for actuating the valve while at least one breakable link 22, disposed at a opposite end of the hinge, relative to the maneuvering device protects the spray can against inadvertent operation of the device and, until it has been cut, guarantees to the buyer that the spray can was not yet used.

  As represented in FIGS. 1 and 2, the cover is secured to the container 2 of the aerosol container by force-engaging means 23, 23 'constituted by a first lip of the cover snapping onto a rim of the container and at least one lip portion snapping onto the valve skirt as shown in Figure 2B. The snap on the skirt of the valve allows a more precise hold of the head relative to the position of the nozzle because the positioning tolerances of this skirt relative to the nozzle are more accurate than the positioning tolerances of the rim of the container. relative to this same nozzle and the fact that the skirt of the valve has a frank lower edge while the rim of the container is rounded.

  According to the invention, the second end of the conduit 7 opens into a housing 8 of the product outlet and receiving a plurality of nozzles 9a, 9b, 9c of 10a, 10b, 10c diffusion nozzles can be selected one by one.

  The end pieces 9a, 9b, 9c comprise a diffusion channel 11 positioned facing the duct 7, the housing 8 having a recessed shape complementary to a rear part of the end pieces 9a, 9b, 9c so as to provide a seal around the connection between the conduit 7 and the channel 11.

  The end pieces may optionally be single end pieces, but according to a particularly advantageous embodiment of the invention, the nozzles provided with their end pieces are formed on a rotary wafer 12, an example of which is shown in front of FIG. 2A.

  The rotary slab 12, on which are arranged the tips of the nozzles, is positioned on a support plate 13 of the operating device.

  The support plate, more particularly represented in FIGS. 7A to 7C, is provided with a plurality of housings 8, 14 comprising, on the one hand, said outlet housing of the product 8 and, on the other hand, blind housing 14 for receiving unselected nozzle tips.

  The wafer 12 is more particularly represented in FIG. 6 in the context of an embodiment comprising a ring 17 for retaining the wafer 12.

  The wafer 12 has the nozzle outlets on its front face and the end pieces on its rear face, the end pieces 9 protruding from the rear face to be positioned in the housings carried by the support plate 13.

  The plurality of nozzles 9a, 9b, 9c of nozzles and housings 8, 14 are arranged on a circular path 15 formed around an axis 16 of rotation of the rotary slab 12.

  According to the example of FIGS. 7A to 7C, the circular path on the support plate is made by an annular groove which receives a complementary annular ring 23 of the wafer and the axis 16 is a rod protruding from the face 13 for s engage in a tubular housing of the wafer 12. An inversion for which the rod is disposed on the rear face of the wafer is engaged in a housing of the support plate is of course conceivable within the scope of the invention .

  The housings 8, 14 open into the groove forming the circular path 15.

  Thus, a rotation of the wafer 12 makes it possible to move the end pieces from one housing to the other while climbing on the ramp formed by the circular path.

  According to the example of FIG. 1 and the sectional view of FIG. 3A, the device comprises means 19 for returning the wafer 12.

  These means, constituted here by one or more springs are adapted to apply the wafer 12 to the support plate 13, the wafer being provided with a rear edge 20 snapping on the support plate.

  According to this embodiment, the selection of the nozzles 10a, 10b, 10c is achieved by the rotation of the wafer 12 and the passage of the end pieces 9a, 9b, 9c of a housing 8, 14 to the other. Thus, the selection and positioning of the nozzles are precise, a good tactile sensation being given when the tips are engaged in the housing.

  This rotation and this passage are shown in FIGS. 4A and 5A with the intermediate position for which the end pieces slide on the circular path 15 in FIGS. 4B and 5B.

  According to this example, three nozzles corresponding to different jets, for example flat jet, solid jet and mist are provided as well as a tip 25 devoid of conduit, this nozzle corresponding to a closed position and safety device which, because of the good sealing achieved by the complementarity of the tips and housing, is a position for which no leakage of the product is possible.

  In a variant shown in FIG. 8, the support of the wafer on the support plate is obtained by means of an axis 11 ', made on the rear face of the wafer and fitting into a housing of the plate. 13 '.

  The axis 11 'protrudes from the rear of this plate and a single return means is produced by a spring 20' attached or molded with the wafer 12.

  FIG. 3B corresponds to the embodiment of FIG. 1 for which the diffuser device comprises clamping means 17, in the form of a ring screwing onto a peripheral edge of the support plate, adapted to apply the wafer 12 on the support plate 13.

  For this embodiment, the ring 17 and the wafer 12 are shown in Figure 6, a stud 24 positioned in front of the nozzle 25 without conduit allows, once the ring loosened, to turn the slab to make coincide the mouthpiece of the selected nozzle with the housing 8 having the outlet of the duct 7.

  This embodiment allows, when the ring is tightened, to obtain optimum sealing of the spray device from the nozzle to the nozzle.

  This screw device is however less easy to use than the embodiment with return means of Figure 3A because it is necessary to loosen the ring to turn the wafer and then re-tighten.

  To protect the wafer, whatever the embodiment discussed above, it is provided that at least a portion of the wafer fits into a recess of the cover.

  As shown in FIG. 1, the support plate 13 forms part of the maneuvering and dispensing device and is extended by a hinge element 18 connecting the maneuvering and dispensing device to the hood.

  The operating device pivots around this hinge to actuate the nozzle of the valve and deliver the product.

  The hood thus produced offers the possibility of offering several types of jets for the same container without increasing the size of the aerosol container, while maintaining the same safety of use as a single hood and nozzle spray because the Access to the valve is protected, for the pancake embodiment, by avoiding having to provide a plurality of nozzles that are at risk of being lost and providing a path without loss of pressure for the product between the valve and the nozzle.

Claims (7)

  1 - Multi-jet diffuser device (1), for aerosol dispensing spray of a product, comprising a cover (3), provided with a device (4) for actuating a nozzle (5) of a valve ( 6) of the container (2) of the aerosol can and dispensing product, said maneuvering and dispensing device comprising a conduit (7) provided with a first end (7a), sealingly adapted to the nozzle (5), and provided with a second end (7b) for dispensing the product, characterized in that said second end opens into a housing (8) for outputting the product and receiving a plurality of endpieces ( 9a, 9b, 9c) of diffusion nozzles (10a, 10b, 10c) selectable one by one.   2 - diffuser device according to claim 1 characterized in that, the ends (9a, 9b, 9c) having a diffusion channel (11) positioned opposite the conduit (7), the housing (8) comprises a hollow shape complementary to a rear portion of the end pieces (9a, 9b, 9c) so as to provide a seal around the connection between the conduit (7) and the channel (11).   3 - diffuser device according to claim 1 or 2 characterized in that the tips of the nozzles are arranged on a rotary wafer (12) positioned on a support plate (13) of the operating device, the support plate being provided a plurality of housings (8, 14) comprising on the one hand said outlet housing of the product (8) and, on the other hand, blind housings (14) for receiving unselected nozzle tips.   4 - diffuser device according to claim 3 characterized in that the plurality of nozzles (9a, 9b, 9c) of nozzles and housings (8, 14) are arranged on a circular path (15) formed around an axis ( 16) of rotation of the rotary wafer 12), the circular path (15) being in the form of a groove in which the housings (8, 14) open.   - Diffuser device according to claim 3 or 4 characterized in that it comprises means (19) for returning the wafer (12) adapted to apply to the support plate (13).   6 - Diffuser device according to claim 5 characterized in that the selection of the nozzles (10a, 10b, 10c) is performed by rotation of the slab (12), and passage of the ends (9a, 9b, 9c) of a housing (8, 14) to another.   2886172 9 7 - diffuser device according to one of claims 3 to 6 characterized in that it comprises clamping means (17) adapted to apply the wafer (12) on the support plate (13).   8 - diffuser device according to one of claims 3 to 7 characterized in that at least a portion of the wafer fits into a recess of the cover.   9 - diffuser device according to one of claims 3 to 8 characterized in that the support plate (13) is part of the maneuvering and dispensing device and is extended by a hinge member (18) connecting the operating device and hood distribution.   - Diffuser device according to one of claims 3 to 9 characterized in that the wafer comprises a nozzle (25) devoid of conduit, this nozzle corresponding to a closed position of the device.