JPH0647176U - Push button device for aerosol cans - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a push button device for an aerosol can, which can be restrained at a push-down position. [Arrangement] In an aerosol can of a type in which a push button of an automatic return type which is biased by a spring is pushed down to spray contents, a cylindrical cover which is coupled to an upper edge of the aerosol can and surrounds a lower end portion of the push button. The inner wall surface is formed with an engaging step portion that occupies a portion within a pushable range of the push button and projects in the radial direction, and a radial overhang that can engage with the engaging step portion at the lower part of the push button. It is characterized in that a portion is formed. Also, an internal thread extending in the axial direction is formed on the inner wall surface of the tubular cover, the external thread occupying a position outside the range where the push button can be pressed down, and a male thread portion that is screwed with the internal thread is formed on the lower end of the push button. It is characterized by being

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a push button device for an aerosol can. If aerosol cans are thrown away as ordinary waste as they are, the combustible gas remaining in the cans will explode due to heating due to incineration, and combustion gas will be ejected from the ruptured parts of the cans, which is extremely dangerous. Therefore, when disposing of an aerosol can, it is necessary to sufficiently discharge the gas remaining in the can in advance.

[0002]

[Prior art]

 However, conventionally, no aerosol can has been developed that can easily discharge residual gas before disposal. It is also practiced to make a hole in the aerosol can body, but it is not easy and it is not reliable.

In the present specification, “pushing down the push button” is used to mean that the push button is pushed into the container of the aerosol can.

[0004]

[Problems to be solved by the device]

 The problem to be solved is to solve the above-mentioned problems in the above-mentioned conventional technology.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention relates to an aerosol can of a type in which an automatic return type push button by a spring bias is pushed down to spray contents, and the push button of the push button is connected to the upper edge of the aerosol can. On the inner wall surface of the cylindrical cover that surrounds the lower end portion, an engagement step portion that occupies a portion within the pressable range of the push button and projects in the radial direction is formed. It is characterized in that a radial overhanging portion that can be engaged with the joining portion is formed.

The present invention further relates to an aerosol can of a type in which a push button of a spring-biased automatic return type is pushed down to spray the contents, and the lower end of the push button is coupled to the upper edge of the aerosol can. An internal thread extending in the axial direction is formed on the inner wall surface of the cylindrical cover that surrounds the push button at a position outside the pushable range of the push button, and a male screw part that engages with the internal thread is formed at the lower end of the push button. It is characterized by being.

[0007]

【Example】

 Hereinafter, a push button device according to an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 7, the aerosol can is equipped with a pressure resistant container B in which contents such as chemicals and a propellant are stored, and a push button type injection device 1 attached to the upper part of the container. Although not shown in the figure, the injection device 1 is provided with a known valve having a gas passage extending from the inside of the container B to the injection hole 5 of the external push button. 7 and 1 show the push button device 2 in a normal use state. In FIG. 1, a is a plan view of the push button device 2, b is a sectional view taken along line XX ′ of a, and c is a sectional view taken along line YY ′ of a.

The push button device 2 includes a push button 3 connected to a stem 7 of the valve and having an injection hole 5, and a tubular cover 4 having a central through hole 6. The push button 3 can reciprocate in the axial direction of the aerosol can together with the stem 7 because the stem 7 is biased upward by a spring (not shown). A flange 31 having a projecting portion 310 in the radial direction is formed around the lower portion of the push button 3, and the contour of the central through hole 6 of the tubular cover 4 is formed corresponding to the contour of the flange 31. In order to guide the push button 3 when it reciprocates in the axial direction, a small convex portion 43 is provided on the peripheral surface of the through hole, and a concave portion 32 is provided on the outer periphery of the flange. And the recess are engaged. In this embodiment, the convex portion and the concave portion are provided at two places (Fig. 1a).

Further, as shown in FIG. 1b, the cylindrical cover 4 has a peripheral surface of the central through hole 6 for guiding the pressing of the push button 3 within a range required for normal use of the aerosol can. A protrusion 42 is provided, and the lower surface of the protrusion, that is, the end of the protrusion 42 is within the range in which the push button 3 is pushed down. The end is a step 41, which is sized to receive the maximum diameter portion of the flange 31.

FIG. 2 shows a state in which the push button 3 of the push button device 2 of FIG. 1 is restrained in the depressed position, a is a plan view of the device, and b is a cross section taken along line XX ′ of a. It is a figure. When the push button is pushed in in a normal use state (FIG. 1), the flange 31 of the push button 3 is axially guided by the convex portion 43 of the tubular cover 4, and the push button 3 is released when the pushing force is released. Spring returns to the original position.

When the push button 3 is rotated to the left or right while the flange 31 is pushed to a position where it occupies the lower side of the step portion 41, the projecting portion 310 of the flange 31 engages with the step portion 41. In this way, the push button device 2 can continue to hold the push button 3 in the depressed position.

Next, FIGS. 3 and 4 show a push button device 2A according to another embodiment. In the figure, the same reference numerals as those in FIGS. 1 and 2 indicate the same parts. FIG. 3 shows a push button device 2A in a normal use state, where a is a plan view of the device, b is a sectional view taken along line XX 'of a, and c is taken along line YY' of a. FIG.

In the example of FIGS. 3 and 4, a flange 31A that extends in the radial direction and has an elliptical contour is formed around the lower portion of the push button 3A, and the contour of the central through hole 6A of the tubular cover 4A has a flange 31A. Is formed corresponding to the contour of the. The peripheral surface 44 of the through hole is provided with a guide when the push button 3A moves in the axial direction, and is appropriately provided with a taper in order to maintain an appropriate push distance and prevent extreme push in normal use. ing. The taper is oriented so that the central through hole 6A is narrowed with respect to the push-down direction of the push button 3.

Further, as shown in FIG. 3b, on the peripheral surface of the central through-hole 6A, a step portion 41A radially inwardly projected is formed at a portion corresponding to the step portion 41, and the step portion 41A has a flange 31A. The maximum diameter (major axis) is the size that can be accepted.

FIG. 4 shows a state in which the push button 3A of the push button device 2A is restrained in the depressed position, a is a plan view of the device, and b is a sectional view taken along line XX 'of a. When the push button 3A is rotated while being pushed to the required depth, the flange 31A engages with the step portion 41A (Fig. 4b).

FIG. 5 shows a push button device 2B according to still another embodiment. In the figure, the same reference numerals as those in FIGS. 1 and 2 indicate the same parts. FIG. 5 shows a normal use state of the device, a is a plan view of the device, and b is a sectional view taken along line XX 'of a.

In the example of FIG. 5, a screw 33 is formed in the lower portion of the push button 3B, and a central through hole 6B of the tubular cover 4B is formed corresponding to the outer diameter of the push button 3B. The peripheral surface 46 of the through hole 6B is reduced in diameter at a portion corresponding to the step 41 described above, and a female screw 6C which is screwed with the screw 33 at the lower portion of the push button 3B is formed. A convex portion 45 for guiding the axial movement of the push button 3B is provided on the peripheral surface 46 of the central through hole 6B, and the flange 31B at the lower portion of the push button 3B corresponding to the convex portion 45 is provided. A recess 34 is provided on the outer circumference. The convex portion and the concave portion are engaged with each other. In this embodiment, the convex portion and the concave portion are provided at one place.

In the embodiment, in order to restrain the push button 3B in the depressed position, the push button 3B may be pushed to the required depth and the screw 33 may be screwed into the female screw 6C.

FIGS. 8 and 9 further show a push button device 2C according to another embodiment. FIG. 8 is a perspective view showing a state where the device is attached to an aerosol can, and FIG. 9 is a vertical cross-sectional view of the device in a normal use state. In the example shown in FIGS. 8 and 9, the push button 3C is supported by a connecting portion 9 that is integrally formed with the tubular cover 4C by an elastically deformable plastic. The screw 33 on the lower portion of the push button 3C and the female screw 6E of the inner tubular portion 4D fitted in the lower portion of the through hole 6D of the tubular cover 4C are provided so as to be screwed with each other. When the push button 3C is pushed during use, the push button 3C is pushed down so as to rotate about the connecting portion 9 as a fulcrum.

In order to restrain the push button 3C shown in FIG. 9 in the depressed position, the push button 3C is strongly pressed to break the plastic connecting portion 9, and the push button is pushed to the required depth to screw the screw 33 into the female screw. It is easily done by screwing into 6E.

When the aerosol canister is normally used, as a device for preventing the push button from being accidentally restrained at the push-down position, as described above, the projection provided on the push button and the cylindrical cover is used. In addition to the parts and recesses, the taper provided in the through hole of the cylindrical cover, and the like, there are those shown in FIG. In the push button device shown in the figure, an elastic member 8 is attached to the lower surface of the flange 31 under the push button 3, and a stopper surface 47 for appropriately adjusting the pushing amount of the push button 3 is formed on the tubular cover 4. Has been done. When the push button 3 is pushed, the elastic member 8 is pushed and the push button 3 is prevented from being pushed too much.

[0022]

[Effect of device]

 The push-button device configured as described above can be pushed down to the required depth and rotated to rotate, and can be held down while being pushed down.When the aerosol can is discarded, the residual gas in the can can be sufficiently discharged. In addition, it is possible to surely perform degassing. Also, the effort is simple.

[Brief description of drawings]

FIG. 1a is a plan view of a push button device according to an embodiment of the present invention, b is a sectional view taken along line XX ′ of a, and c is Y- of a.
It is sectional drawing which follows the Y'line.

2 shows a fixed state of the push button device of FIG. 1, FIG.
Is a plan view and b is a sectional view taken along line XX ′ of a.

FIG. 3A is a plan view of a push button device according to another embodiment,
b is a vertical cross-sectional view taken along line XX 'of a, and c is YY' of a.
It is a longitudinal cross-sectional view along a line.

4 shows a fixed state of the push button device of FIG. 3, FIG.
Is a plan view and b is a longitudinal sectional view taken along line XX ′ of a.

FIG. 5a shows a push button device according to yet another embodiment, FIG.
Is a plan view and b is a longitudinal sectional view taken along line XX ′ of a.

FIG. 6 is a vertical cross-sectional view showing an elastic member and a stopper added to the device of FIG.

7 is a perspective view showing a state in which the device of FIG. 1 is mounted on an aerosol can.

FIG. 8 is a vertical cross-sectional view of a push button device according to another embodiment.

9 is a perspective view showing a state where the device of FIG. 8 is attached to an aerosol can.

[Explanation of symbols]

 1 push button type injection device 2 push button device 2A push button device 2B push button device 2C push button device 3 push button 3A push button 3B push button 3C push button 4 tubular cover 4A tubular cover 4C tubular cover 5 jet port 6 Central part through hole 8 Elastic member 9 Connection part 30 Pressing part 310 Overhanging part 31 Flange 31A Flange 31B Flange 32 Recessed part 33 Screw 41 Step part 42 Projection part 43 Convex part

Claims (5)

[Scope of utility model registration request] 1. An aerosol can of a type in which a push button of a spring-biased automatic return type is pushed down to spray contents, and a tubular shape is connected to an upper edge of the aerosol can and surrounds a lower end portion of the push button. On the inner wall surface of the cover, an engagement step portion is formed which occupies a portion within a pushable range of the push button and projects in the radial direction, and a radius capable of engaging with the engagement step portion at a lower portion of the push button. A push button device for an aerosol can, which is characterized in that a bulging portion in the direction is formed. 2. An aerosol can of a type in which a push button of a self-restoring type that is biased by a spring is pushed down to spray contents, and a tubular shape that is connected to an upper edge of the aerosol can and surrounds a lower end portion of the push button. On the inner wall surface of the cover, an internal thread extending in the axial direction occupying a position outside the range where the push button can be pressed is formed, and a male thread portion to be screwed with the internal thread is formed at the lower end of the push button. A characteristic push button device for aerosol cans. 3. The push button outer peripheral surface and the tubular cover inner wall surface have a detent formed on one side by a convex portion and on the other side by a concave portion fitted with the convex portion, and at least the convex portion and the concave portion. One of them is extended to a depth beyond the engagement step of the inner wall surface of the tubular cover, and the projection and the recess are fitted to each other such that they are disengaged by forced rotation. The device according to claim 1 or 2. 4. A taper is formed on at least a part of the inner wall surface of the cylindrical cover so as to occupy a position within a range where the push button can be pushed down, and the taper is narrowed in a pushing direction of the push button. Claim 1 characterized by the above.
Or the device according to 2. 5. A stopper surface is formed below the engagement step of the inner wall surface of the tubular cover, and an elastic member is attached to the stopper surface or the lower surface of the push button. The device according to claim 1 or 2.