JP6810447B2 - Spray cap for aerosol and aerosol - Google Patents

Description

The present invention relates to a spray cap that is attached to the valve portion at the top of the aerosol container and is connected to the stem to enable spray operation, in particular, an operation button for pressing the stem to eject the contents. The present invention relates to a spray cap integrally provided with a flow path for guiding an ejector from a stem to the outside.

Aerosol products are often used to spray deodorants, cleaning agents, pesticides, horticultural solvents, cosmetics and various other chemicals. It is desirable to control the spray range and spray intensity depending on the type and purpose of the drug to be sprayed.

For example, Patent Documents 1 and 2 disclose an aerosol cap that can obtain a spray pattern that diffuses uniformly in a cross shape. The caps of Patent Documents 1 and 2 are provided with nozzles at the center of the ejection direction and on both sides thereof. An outflow path for guiding the contents ejected from the aerosol container is formed in the cap, and the outflow path is branched into three and connected to each of the three nozzles. As a result, the contents of the aerosol container are supplied from the three outflow passages to the three nozzles arranged in the horizontal direction, and the contents are jetted from the three nozzles to form a spray pattern spreading in the lateral direction. In addition, a vertically long split groove is provided on the outside of the central nozzle, and the spray from the central nozzle is restricted from spreading in the horizontal direction by the split groove to form a vertically long spray pattern. .. Further, the aerosol cap of Patent Document 2 makes it possible to replace the chip component provided with three nozzles, and to form various cross-shaped spray patterns.

Further, in Patent Document 3, in order to realize soft spraying, an internal liquid injected from a stem is temporarily stored in a storage chamber, and a plurality of internal liquids overflowing from the storage chamber are arranged around the nozzle. The configuration of guiding and spraying through the flow path is disclosed.

Japanese Unexamined Patent Publication No. 2011-139994 Japanese Unexamined Patent Publication No. 2011-177677 Japanese Unexamined Patent Publication No. 2014-156255

In recent years, there has been a demand for an aerosol spray cap that uniformly reaches a three-dimensional range determined by the spreading angle by injecting the contents of the aerosol in the horizontal direction and the vertical direction at desired spreading angles.

The caps of Patent Documents 1 and 2 have a structure in which nozzles are provided at the tips of the three outflow passages, and the normal direction of the opening surface of the nozzles is the axial direction of the outflow passage (aerosol content supply direction). Is consistent with. Therefore, the contents flowing through the outflow path pass through the nozzle while maintaining the momentum straight without changing the traveling direction, and are ejected to the outside. Therefore, the spread angle of the ejected product is determined by the momentum of the contents ejected from the narrowed nozzle, and the size of the spread angle depends on the diameter of the nozzle, the gas pressure in the aerosol container, and the remaining amount of the contents. Will be done. The diameter of the nozzle can be designed, but the gas pressure in the aerosol container and the remaining amount of the contents change with use. Therefore, it is difficult to design the spreading angle of the ejecta to a desired angle and maintain that angle even during use. Further, the vertical split groove functions as a so-called obstruction plate in which the wall surface of the split groove hinders and restricts the lateral progress of the ejecta ejected from the ejector. Therefore, the split groove does not control the spreading angle itself when ejected from the injection port, but limits the traveling direction after ejection. Further, in the configuration of Patent Document 3, as in Patent Documents 1 and 2, since the contents are ejected from the nozzle at the tip of the outflow path, it is difficult to design the spread angle of the ejected product to a desired angle.

An object of the present invention is to provide an aerosol spray cap capable of injecting the contents of an aerosol at desired spread angles in the longitudinal and lateral directions.

In order to achieve the above object, the spray cap for an aerosol of the present invention includes a first flow path into which the contents in the aerosol container ejected from the stem flow, and a plurality of second flow paths connected to the first flow path. It has a nozzle that is an opening at the tip of the second flow path, and an operation button that pushes down the first flow path in order to push the stem. The plurality of second flow paths have axial directions that intersect with each other in the axial direction of the first flow path, and at least a part of the wall surface of the internal space of the second flow path spreads at a predetermined angle toward the nozzle. It has a slanted shape. A connecting port is provided on the wall surface of the internal space of the second flow path, and is connected to the internal space of the first flow path by the connecting port.

According to the present invention, the aerosol spray cap can spray the contents of the aerosol in the vertical and horizontal directions at desired spread angles.

It is (a) front view and (b) sectional view of the spray cap for an aerosol of this embodiment. (A) is a cross-sectional view taken along the line AA'of FIG. 1 (b), and FIG. 1 (b) is an enlarged view of FIG. 1 (b). (A) is a rear view of the spray cap, (b) is a sectional view of the state where the spray cap is attached to the aerosol container, and (c) is a cross-sectional view of the spray cap attached to the aerosol container and the operation buttons are pressed for injection. A cross-sectional view in a state of being pushed down by the user, (d) is a cross-sectional view taken along the line BB'of (b), and (e) is a top view of the spray cap. It is sectional drawing which shows the manufacturing method of the spray cap for an aerosol of this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The aerosol spray cap of the present embodiment will be described with reference to FIGS. 1 to 3. 1 (a) and 1 (b) are a front view and a cross-sectional view of the spray cap for an aerosol of the present embodiment. 2 (a) is a cross-sectional view taken along the line AA'of FIG. 1 (b), and FIG. 2 (b) is an enlarged view of FIG. 1 (b). 3A is a rear view of the spray cap, FIG. 3B is a cross-sectional view of the spray cap attached to the aerosol container, and FIG. 3C is a cross-sectional view of the sprayed state. (D) is a cross-sectional view taken along the line BB', and FIG. 3 (e) is a top view.

The aerosol spray cap of the present embodiment is a cap attached to the valve 120 of the aerosol container 100 as shown in FIGS. 1 to 3, and includes the first flow path 10 and the second flow paths 20a, 20b, 20c. , The operation button 30 is provided. As shown in FIG. 3B, the first flow path 10 is connected to the stem 110 of the valve 120 by attaching the spray cap to the valve 120. Therefore, when the user presses the operation button 30, the contents (gas and liquid) in the aerosol container 100 ejected from the stem 110 flow into the first flow path 10. The second flow paths 20a, 20b, 20c are connected to the first flow path 10. The tips of the second flow paths 20a, 20b, 20c form openings 21a, 21b, 21c as shown in FIG. 1A, and these openings 21a, 21b, 21c serve as nozzles.

The operation button 30 is a button for pressing the stem 110, and in the present embodiment, the operation button 30 is integrally formed with the wall surface 10b constituting the first flow path 10. Therefore, when the operation button 30 is pressed, the wall surface 10b constituting the first flow path 10 is pushed down as shown in FIG. 3C, and the stem 110 is pressed. Specifically, the wall surface 10b of the first flow path 10 is cantilevered and supported by the flexible portion 40 with respect to the cap body 41, and when the user presses the operation button 30, as shown in FIG. 3C. The flexible portion 40 bends, and the wall surface of the first flow path 10 is inclined at an angle to push down the stem 110. As a result, the contents (gas and liquid) of the aerosol container are ejected from the tip of the stem 110 and flow into the first flow path 10 as described above.

At this time, in the present embodiment, the axial directions of the plurality of second flow paths 20a, 20b, 20c intersect with the axial direction of the first flow path 10 (here, substantially orthogonal to each other). Moreover, at least a part 23a, 23b, 23c of the side surface (wall surface) of the internal space of the second flow path 20a, 20b, 20c has a predetermined angle toward the injection port as shown in FIGS. 2A, 2B. It is formed in an inclined shape so as to spread in. Further, connecting ports 22a, 22b, 22c are provided on the wall surface of the internal space of the second flow path 20a, 20b, 20c, and are connected to the internal space of the first flow path 10 by the connecting ports 22a, 22b, 22c. There is.

Due to such a configuration, the contents (gas and liquid) pressurized and sealed in the aerosol container 100 are ejected from the tip of the stem 110 when the operation button 30 is pressed, and the first flow. It flows into the road 10. Since the internal space of the first flow path 10 is atmospheric pressure, the contents (gas and liquid) are in a state where the volume expands and the mist-like liquid is dispersed in the gas (hereinafter, simply referred to as gas for simplicity). The gas is ejected and the volume is expanded, and the gas advances in the axial direction of the stem 110 and the first flow path 10. Then, the positions flow from the connecting ports 22a, 22b, 22c into the internal space of the second flow paths 20a, 20b, 20c and face the connecting ports 22a, 22b, 22c as shown in FIGS. 2A and 2B. It hits the wall in. As a result, the gas that has flowed in changes the traveling direction to the axial direction of the second flow paths 20a, 20b, 20c, and proceeds toward the openings 21a, 21b, 21c along the wall surfaces of the second flow paths 20a, 20b, 20c. .. At this time, since at least a part of the wall surfaces 23a, 23b, and 23c of the wall surface is inclined, the gas spreads at predetermined angles θa, θb, and θc along the inclination angle of the wall surface, and the second flow path 20a, Proceeding through 20b and 20c, the gas is injected from the openings (fountains) 21a, 21b and 21c. Therefore, the spread angle of the gas when injected from the openings 21a, 21b, 21c can be controlled to the angles θa, θb, and θc.

As described above, in the spray cap of the present embodiment, the axial direction of the first flow path 10 and the axial direction of the second flow paths 20a, 20b, 20c intersect, and the wall surface of the second flow paths 20a, 20b, 20c Gas determined by the momentum of gas being ejected from the connecting ports 22a, 22b, 22c into the second flow paths 20a, 20b, 20c by colliding the gas with the wall surfaces of the second flow paths 20a, 20b, 20c from the connecting port. The spread angle of the gas can be controlled by the wall surface 23a or the like of the internal space such as the second flow path 20a, instead of injecting the spray with the spread angle of. Therefore, as compared with the case where the gas flows straight in the axial direction of the second flow path 20a or the like, the size of the connecting port 22a or the like of the second flow path 20a or the like and the influence of the momentum of the inflowing gas are affected. By reducing the amount, the gas can be spread in an internal space such as the second flow path 20a, and can be guided to a desired angle by the inclined wall surface 23a or the like and spread. Further, the openings (fountains) 21a, 21b, 21c are on the extension of the wall surface of the second flow path 20a, 20b, 20c and do not narrow the internal space, so that the desired angles θa, θb, etc. It can be ejected to the outside from the openings 21a, 21b, 21c with the spread angle of θc. The gas injected from the openings 21a, 21b, 21c proceeds while substantially maintaining the spread angles θa, θb, and θc, or proceeds while further expanding at a predetermined ratio, so that the gas is three-dimensional at a desired solid angle. The range is reached almost uniformly.

Therefore, by designing the spread angles θa, θb, and θc of the wall surfaces of the second flow paths 20a, 20b, and 20c to desired angles, the spray cap of the present embodiment can be mounted in the vertical direction (axial direction of the stem 110) and laterally. The contents of the aerosol (a gas in which the liquid is dispersed in a mist) can be sprayed in a direction with a desired spread angle. Specifically, the spread angles θa, θb, and θc are preferably 5 to 45 degrees, and more preferably 15 to 25 degrees.

It is desirable that the connecting ports 22a, 22b, 22c of the second flow paths 20a, 20b, 20c are smaller than the injection ports 21a, 21b, 21c. This is to spread the gas in the internal space such as the second flow path 20a. Specifically, the size of the connecting ports 22a, 22b, 22c (the length of the transfer, one side when the connecting ports 22a, 22b, 22c are rectangular, and the diameter when the connecting ports 22a, 22b, 22c are circular) is 0.1 to 2 It is desirable that it is 0.0 mm, and the size of the openings (injections) 21a, 21b, 21c (the length of the delivery) is preferably 0.75 to 3.0 mm. The diameter of the first flow path 10 is φ2.0 to φ4.0 mm, the length of the first flow path (axial direction) is 3 to 20 mm, and the width C of the narrowest portion of the first flow path 10 (FIG. 2 (b)) is preferably 0.5 to 3.5 mm.

When there are three second flow paths 20a, 20b, 20c, they are arranged on the upper surface and both side surfaces of the columnar first flow path 10, respectively, and are connected to the first flow path 10 by the respective connection ports 22a, 22b, 22c. It is desirable to have a connected configuration. In particular, the injection ports 21a, 21b, 21c of the second flow paths 20a, 20b, 20c are arranged on the same surface of the outer side surface of the wall surface 10b constituting the first flow path 10 as shown in FIG. 1A. Moreover, it is desirable that the openings 21b and 21c of the two second flow paths 20b and 20c arranged on the left and right are arranged in a direction orthogonal to the axial direction of the first flow path 10. As a result, the vertical spread angle θa of the wall surface 23a of the second flow path 20a sets the vertical spread angle of the injected gas, and the lateral spread angle θb of the wall surfaces of the second flow paths 20b and 20c. , Θc can set the lateral spread angle of the injected gas.

The internal space of the first flow path 10 is preferably columnar in the axial direction along the axial direction of the stem 110, and the internal space of the second flow paths 20a, 20b, 20b is preferably a pyramid shape, particularly a pyramid. It is preferably shaped. By forming the second flow path 20a or the like into a frustum shape, the upper surface of the frustum of the second flow path 20a is arranged in the vicinity of the connecting port 22a or the like as shown in FIGS. 2 (a) and 2 (b). The upper surface of the frustum of the second flow path 20a or the like can prevent the gas flowing into the second flow path 20a or the like from the connecting port 22a from traveling in the direction opposite to the opening 21a. Further, when the second flow path 20a or the like has a pyramid trapezoidal shape, since the wall surface is flat, the spread angle of the injection can be easily changed by changing the angle of the wall surface.

At this time, the second flow path 20a arranged on the upper surface of the first flow path 10 tilts the wall surface 23a located above with respect to the axial direction of the second flow path 20a, as shown in FIG. 2B. As shown in FIG. 2A, the second flow paths 20b and 20c arranged on both side surfaces of the first flow path 10 have wall surfaces 23b and 23c located on both outer sides of the second flow paths 20b and 20c. It is desirable to incline with respect to the axial direction of. Thereby, by changing the inclination angles of the wall surfaces 23a, 23b, and 23c, the spread angles θa, θb, and θc of the gas injected from the entire openings 21a, 21b, and 22c can be easily changed.

Further, the columnar inner wall surface of the first flow path 10 is recessed inward at the portion where the connection ports of the second flow paths 20a, 20b, 20c are connected as shown in FIGS. 2A and 2B. The shape may be the same. As a result, the three nozzles 21a, 21b, 21c of the second flow paths 20a, 20b, 20c can be arranged close to each other while maintaining the size of the internal space of the first flow path 10.

Further, one or more engaging portions 31 that engage with the unevenness of the aerosol container or the valve can be provided below the spray cap.

The method for manufacturing the spray cap of the present embodiment will be briefly described with reference to FIG. The spray cap can be manufactured by injection molding. At this time, as shown in FIG. 4, a horizontal pin 50 having three tapered tips 51 is brought into contact with the upper surface and the side surface of the eyelet pin 60. As a result, the second flow paths 20a, 20b, 20c can be formed by the three tips 51, and the first flow path 10 can be formed by the eyelet pin 60, and the spray cap can be easily manufactured.

The spray cap for aerosol of the present invention is, for example, a deodorant, a cleaning agent, a cleaning agent, an antiperspirant, a cooling agent, a muscle anti-inflammatory agent, a hair styling agent, a hair treatment agent, a hair dye, a hair restorer, cosmetics, and shaving. It can be used as a spray cap for spraying aerosols for various chemicals such as foams, foods, pharmaceuticals, non-pharmaceutical products, paints, gardening solvents, repellents, washing pastes, fire extinguishing agents, adhesives and lubricants.

10 ... 1st flow path, 20a, 20b, 20c ... 2nd flow path, 21a, 21b, 21c ... Opening (fountain), 22a, 22b, 22c ... Connecting port, 23a, 23b, 23c ... Inclined wall surface, 30 ... Operation button, 110 ... Stem, 100 ... Aerosol container.

Claims (6)

A cap attached to the valve of the aerosol container
A first flow path connected to the stem of the valve and into which the contents in the aerosol container ejected from the stem flow, a plurality of second flow paths connected to the first flow path, and the second flow path. It has a nozzle that is an opening at the tip of the road and an operation button that pushes down the first flow path in order to push the stem.
The plurality of second flow paths have axial directions that intersect with respect to the axial direction of the first flow path, so that at least a part of the wall surface of the internal space spreads at a predetermined angle toward the nozzle. It has an inclined shape and
A connecting port is provided on the wall surface of the internal space of the second flow path, and is connected to the internal space of the first flow path by the connecting port.
The internal space of the first flow path is a columnar shape whose axial direction is along the axial direction of the stem, and the internal space of the second flow path is frustum-shaped.
The second flow path has three lines, is arranged on the upper surface and both side surfaces of the columnar first flow path, and is connected by the respective connection ports.
The shape of the frustum in the internal space of the second flow path is a pyramid shape.
In the second flow path arranged on the upper surface of the first flow path, the wall surface located at least above the first flow path is inclined with respect to the axial direction of the second flow path.
The second flow path arranged on both side surfaces of the first flow path is an aerosol spray characterized in that at least the wall surfaces located on both outer sides are inclined with respect to the axial direction of the second flow path. cap. A cap attached to the valve of the aerosol container
A first flow path connected to the stem of the valve and into which the contents in the aerosol container ejected from the stem flow, a plurality of second flow paths connected to the first flow path, and the second flow path. It has a nozzle that is an opening at the tip of the road and an operation button that pushes down the first flow path in order to push the stem.
The plurality of second flow paths have axial directions that intersect with respect to the axial direction of the first flow path, so that at least a part of the wall surface of the internal space spreads at a predetermined angle toward the nozzle. It has an inclined shape and
A connecting port is provided on the wall surface of the internal space of the second flow path, and is connected to the internal space of the first flow path by the connecting port.
The internal space of the first flow path is a columnar shape whose axial direction is along the axial direction of the stem, and the internal space of the second flow path is frustum-shaped.
The second flow path has three lines, is arranged on the upper surface and both side surfaces of the columnar first flow path, and is connected by the respective connection ports.
An aerosol spray cap characterized in that the columnar inner wall surface of the first flow path is recessed inward at a portion where the connection port of the second flow path is connected. The aerosol spray cap according to claim 1 or 2 , wherein the contents flowing from the stem into the first flow path flow into the second flow path from the connection port and face the connection port. The traveling direction is changed to the axial direction of the second flow path by hitting the wall surface at the position where the wall surface is located, and the traveling direction is changed toward the opening along the inclined wall surface, and the spread angle of the inclined wall surface is the predetermined angle. An aerosol spray cap characterized by being sprayed through an opening. The aerosol spray cap according to claim 1 or 2 , wherein the connecting port of the second flow path is smaller than the injection port. 2. The aerosol spray cap according to claim 1 or 2 , wherein the nozzles of the second flow path are arranged on the same surface of the outer side surface of the first flow path, and are arranged on both side surfaces. An aerosol spray cap characterized in that the openings of the second flow path of the book are arranged in a direction orthogonal to the axial direction of the first flow path. An aerosol having a valve with a stem arranged at the top and filled with a substance to be injected inside, and an aerosol spray cap attached to the valve.
The aerosol spray cap is the aerosol spray cap according to any one of claims 1 to 5 .

Images