JP2003275635A - Spray button for aerosol container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enforce the function of mist generation by an additional structure reducing the volume of a joining room in a spray button for an aerosol container provided with the joining room for the mist generation after a plurality of bars of radial passages. <P>SOLUTION: At the peripheral surface part of a button part 10, an inserting groove 13 formed as a cylindrical recessed part in the joining room 23 is formed for inserting a disk-shaped spray opening member 20. At the front center part of the joining room 23, a spray opening 24 is formed, and at the back surface of the spraying member 20, a plurality of bars of radial passages 25, of which the inlet communicates to the passage part and the outlet to the joining room 23, along the bottom surface of the inserting groove 13 are formed, whereby when the button part 10 is pushed down a contained material is sprayed from the spray opening 24 through the passage parts 11, 15, the radial passages 25 and the joining room 23. A post 17 is protruded of which the peripheral surfaces face to the outlets of the respective radial passages 25 with gaps 17a at the bottom center part of the inserting grooves 13, and of which the front surfaces face to the front surface of the joining surfaces 23 with the gap 17b. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a flow channel portion formed in the button portion, the flow passage portion being fitted at a base end portion of a valve stem projecting from a head portion of an aerosol container, and a peripheral surface portion of the button portion. Is an injection button in which a fitting groove is formed in the center of the back surface for fitting a disc-shaped nozzle member in which the merging chamber is formed as a cylindrical recess, and an injection port is formed in the center of the front surface of the merging chamber. On the back surface of the member, the inlet portion communicates with the flow passage portion, and the outlet portion communicates with the merging chamber to form a plurality of radial passages along the bottom surface of the fitting groove, so that the button portion is pressed down. Then, the present invention relates to an injection button for an aerosol container, which is adapted to inject the content from the injection port via the flow path portion, each radial flow path, and the confluence chamber.

[0002]

2. Description of the Related Art This kind of injection button for an aerosol container is well known, and injection liquids from the surroundings are combined in a confluence chamber via each radial flow path to eject from an injection port on the front face of the injection port member. It is designed to let you. This allows cosmetics,
The contents such as wax and paint become mist in the process of passing through the long and narrow radial flow path, and by mixing and diffusing in the confluence chamber, the injection pattern causes the injection port to pass through the radial flow path. The injection density is made uniform by avoiding streaking in the radial direction at the center.

[0003]

However, there is room for improvement in that mist is not sufficiently formed depending on the viscosity of the contents or the shape of the radial flow passage. Also,
There is also a problem in that depending on the volume of the merging chamber, the amount of residual liquid that drips after the pressing operation of the injection button is released, so-called afterdraw, is increased.

On the premise of such a mist forming structure, the present invention has been described at the outset, in which the mist forming function can be enhanced by an additional structure for reducing the volume of the confluence chamber following the plurality of radial flow passages. An object of the present invention is to provide a spray button for aerosol containers of the same class.

[0005]

In order to achieve this object, the present invention provides, according to claim 1, a flow path portion which is fitted at a base end portion to a valve stem protruding from a head portion of an aerosol container. An injection button having a fitting groove formed inside the button portion, and having a disc-shaped nozzle member, in which a merging chamber is formed as a cylindrical concave portion, is formed in a peripheral surface portion of the button portion. An injection port is formed in the center of the front of the merging chamber, and a plurality of strips along the bottom surface of the fitting groove are formed on the rear surface of the nozzle member so that the inlet communicates with the flow passage and the outlet communicates with the merging chamber. By forming the radial flow path of the, when the button portion is pressed down, the contents are ejected from the ejection port via the flow path portion, each radial flow path, and the confluence chamber. In the injection button for aerosol container, in the center of the bottom surface of the fitting groove, Surfaces facing with a gap to the exit of each radial channel, and post front is facing with a gap in front of the merging chamber is characterized in that projecting.

[0006] The jetting liquid is made into mist in the process of passing through the radial flow paths, and is sprayed on the peripheral surface of the post, so that the mist forming action is added. After this spraying, the spray is injected from the injection port while diffusing and converging in the gap around and in front of the post.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An injection button for an aerosol container according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In this injection button, a vertical flow path portion 11 that is fitted to a valve stem 3 projecting from a mounting cup 2 on the head of an aerosol container 1 at a fitting portion 11a at a base end is formed inside a button portion 10. Further, the injection port member 20 is fitted in the fitting groove 13 formed in the peripheral surface portion thereof.

The fitting groove 13 is a disk-shaped recess having a corresponding shape into which the disk-shaped front portion 21 of the nozzle member 20 is fitted. An annular engagement groove 14 into which the formed annular engagement piece 27 is engaged is formed toward the vertical flow path portion 11. On the outer peripheral surface of the engaging groove 14, the annular projection 2 of the engaging piece 27 is provided.
An annular recess into which 7a is inserted is formed. The disc-shaped front portion 21 has a square-shaped rear surface 26, and the outer regions of the four sides thereof are formed as the thick portions 29 of the engagement pieces 27,
It gradually becomes thinner at the rear end portion and matches the thickness of the engagement piece 27. The inner peripheral surface of this thick portion is the inner peripheral wall 14 of the engaging groove 14.
By making contact with a, the engaging groove 14 is divided into four directions, and the lateral flow path sections 15 are formed toward the four corners of the back surface 26 by utilizing the gaps. An inlet 14 b that communicates with the vertical flow path portion 11 is formed in the lower center portion of the engagement groove 14. As a result, the injection flow that has flowed in at the inlet 14 b circulates in a circular shape at the rear end portion of the engagement groove 14 and is divided into the respective lateral flow passage portions 15 in the engagement groove 14.

A converging chamber 23, which is a cylindrical recess, is formed at the center of the square-shaped back surface 26, and an injection port 24 is formed at the center of the front surface of the converging chamber. Further, the strip-shaped notch groove is formed from the corner portion of the back surface 26 toward the center portion, so that the four radial flow passages 25 communicating with the merging chamber 23 are formed along the bottom surface 13a of the fitting groove 13. To be done.

At the center of the bottom surface 13a of the fitting groove 13, the circumferential surface faces the outlets 25b of the radial flow paths 25 with a gap 17a between them, and the front surface faces the front of the merge chamber 23 with a gap 17b. A cylindrical post 17 is provided so as to project.

When the button portion 10 is pushed down, the contents flow from the inlet 14b into the engaging groove 14 and circulate in an annular shape, and then are diverted into the lateral flow passage portions 15 to belong to the radial flow passages. 25 into the inlet 25a. Then, as is well known, mist is formed in the process of passing through the long and narrow radial flow path 25, and the jet liquid is sprayed from the outlet 25b to the peripheral surface 17c of the post 17 according to the present invention to further atomize. Be seen. Subsequently, the gaps 17a are diffused in the circumferential direction and merge with each other, and the gaps 17b are merged while being diffused from the periphery to the center, and the jets are jetted from the jet port 24 in a uniform jet pattern. The volume of the confluence chamber 23 is narrowed by the volume of the post 17, the residual liquid amount is accordingly reduced, and afterdraw is suppressed.

By the way, the post 17 becomes long and the gap 17
If b is narrowed, the merging is not sufficiently performed, and there is a possibility that the injection density in the rotation direction of the injection pattern varies. Similarly, the width of the gap 17b needs to be set to such a degree that a diffusion region can be secured so that the uniform merging action is not hindered.

[0013]

According to the present invention, the jetting flow discharged from the radial flow path is blown onto the circumferential surface of the post, so that the atomizing action is reinforced. Therefore, sufficient microparticulation is performed, and microparticulation is performed on a content that is difficult to microparticulate. Since the volume of the merging chamber is correspondingly reduced, the amount of liquid dripping at the time of releasing the pressing operation is also reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an injection button for an aerosol container according to an embodiment of the present invention.

FIG. 2 is a rear view of an injection port member of the injection button.

FIG. 3 is a sectional view of the main part of the injection button taken along the line AA in FIG.

[Explanation of symbols]

1 aerosol container 3 valve stem 10 buttons 13 Fitting groove 14 Engagement groove 15 Lateral flow path 17 posts 17a, 17b gap 20 nozzle member 21 Disc-shaped front 27 engagement piece 23 Confluence room 25 radial flow paths 26 Disc-shaped front side

Claims (2)

[Claims] 1. A flow path portion, which is fitted at a base end portion of a valve stem protruding from a head portion of an aerosol container, is formed inside the button portion, and a peripheral surface portion of the button portion has a central portion of a back surface. An injection button having a fitting groove formed therein, in which a disc-shaped injection port member formed as a cylindrical recess is inserted, wherein an injection port is formed in the center of the front surface of the combination chamber, and a back surface of the injection port member is formed. Has a plurality of radial flow passages formed along the bottom surface of the fitting groove with the inlet communicating with the flow passage portion and the outlet communicating with the merging chamber. In an injection button for an aerosol container, which is designed to inject the content from the injection port via the passage, each radial flow path, and the confluence chamber, the radial surface has a radial surface at the center of the bottom surface of the fitting groove. Face the flow path outlet with a gap and the front is the front of the confluence chamber. Aerosol container ejection button, wherein a post facing with a gap is protruded. 2. A jet nozzle member is formed by projecting an annular engaging piece toward the back in the peripheral portion of the back surface of the disk-shaped front surface portion, and the disk-shaped front surface portion is formed on the peripheral surface portion of the button portion. A fitting groove having a shape corresponding to is formed in the button portion, and a vertical flow path portion fitted at a base end portion of the valve stem and the engaging piece are fitted inside the button portion. The annular engagement groove extending from the peripheral portion of the fitting groove toward the vertical flow path portion and the radial direction of the inlet of the radial flow path and the vertical flow path portion are communicated with each other in the lateral direction due to the gap in the engagement groove. The injection button for an aerosol container according to claim 1, wherein a flow path portion is formed.