JP2000053177A - Aerosol container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an aerosol container in which work of removing a shoulder cover from a container main body can easily be performed with the power of man. SOLUTION: An aerosol container 1 has a shoulder cover 3 of a synthetic resin mounted on a container main body 2 of metal provided with an ejection button 27, and an overcap 4 of a synthetic resin provided detachably on the shoulder cover 3. In this aerosol container 1, a deformable elastic member is used as a material of the shoulder cover 3, and inverted U-shape portions 24 of the container main body 2 are caused to be pinchingly held between an inner circumferential wall 32 and an outer circumferential wall 33, both being provided to the shoulder cover 3. A plurality of slits 36 are defined at a lower part of the inner circumferential wall 32 along a circumferential direction thereof, and a claw 35 is formed at each lower end of the inner circumferential wall 32. Each claw 35 is locked to a lower part of an inner circumferential face of each inverted U-shape portion 24 in a resiliently repulsive manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol container in which a synthetic resin shoulder cover is attached to a metal container body provided with a spray button, and a synthetic resin overcap is detachably provided on the shoulder cover. More particularly, the present invention relates to an aerosol container having a structure in which a shoulder cover is attached to a container body, and a structure in which an overcap is detachably provided on the shoulder cover.

[0002]

2. Description of the Related Art Conventionally, a used aerosol container is discarded, but when it is reused as a resource, a container body using a metal such as aluminum or steel and a shoulder cover of a synthetic resin product are separately provided. Must be discarded separately.
However, the conventional general aerosol container has a shoulder cover firmly attached to the shoulder of the container body, so it is difficult to remove it with normal force. Met.

[0003]

The first object of the present invention is as follows.
The described invention has been made in view of the above circumstances,
An object of the present invention is to provide a separately disposable aerosol container that can easily remove a shoulder cover from a container body.

[0004] By the way, the shoulder cover, compared to the container body,
It has the disadvantage of being small and difficult to grasp. Therefore, we developed a structure that allows the shoulder cover and the overcap to be simultaneously removed from the container body by using an overcap that is easier to grasp than the shoulder cover and that is assumed to be removable. That is, this structure is particularly useful for a small-diameter container body. Because the body of a small-diameter container has a narrow shoulder width, creating a shoulder cover attached to this will inevitably shorten the diameter and height of the shoulder cover, making it more difficult to secure a place to grip the shoulder cover Because it becomes.

[0005] The invention of claim 2 of the present invention has been made in view of the above-mentioned circumstances, and has as its object the object of the invention of claim 1 in addition to the object of the present invention. An object of the present invention is to provide an aerosol container from which a cover and an overcap can be simultaneously removed.

[0006]

According to the first aspect of the present invention, a synthetic resin shoulder cover is attached to a metal container body provided with a spray button, and the synthetic resin shoulder cover is attached to the shoulder cover. In an aerosol container in which an overcap is detachably provided, a deformable elastic body is used as a material of a shoulder cover, and between an inner peripheral wall and an outer peripheral wall provided on the shoulder cover,
Hold the inverted U-shaped part of the container body, and in the lower part of the inner peripheral wall,
A plurality of slits and a claw portion are formed at a lower end portion along a circumferential direction, and the claw portion is elastically locked to a lower portion of an inner peripheral surface of the inverted U-shaped portion.

In the container body, an inverted U-shaped portion provided on a peripheral portion of the mounting cap is clinched to a bead portion of the can body. To install the shoulder cover, use the reverse U
The claw provided on the inner peripheral wall of the shoulder cover is completed by resiliently engaging the inner peripheral surface of the U-shaped portion, but the elastic force of the shoulder cover temporarily reduces the diameter of the inner peripheral wall by the width of the slit. Because of this structure, the force required at the time of engagement can be reduced. The reason why the inverted U-shaped portion is sandwiched by the shoulder cover is to prevent the shoulder cover from rotating along the circumferential direction.

In the first aspect of the present invention, the locking relationship between the container body and the shoulder cover is specified.
When specifying the locking relationship between the shoulder cover and the overcap, a deformable elastic body is used for the material of the overcap as in the invention according to claim 2, and a circle is formed below the inner peripheral surface of the overcap. An engaging portion is formed along the circumferential direction, and an engaged portion is formed on the shoulder cover to be engaged with the engaging portion at a position of the same height, and the engaging portion and the engaged portion are formed. However, in normal times, only the tip portion may be shallowly overlapped, and may be deeply overlapped and engaged during pressing deformation.

[0009] With this configuration, the engagement between the shoulder cover and the overcap is such that, at normal times, only the tip portion is shallow and overlaps, and at the time of disposal, the lower part of the overcap attached to the shoulder cover is moved in the direction of decreasing the diameter. , And the engaging portion and the engaged portion are deeply overlapped and engaged with each other.

[0010] The provision of the engaging portion along the circumferential direction means that one engaging portion is continuously provided in the circumferential direction and the engaging portion is provided in an annular shape over the entire circumference, or a pressing portion opposed to the other. In the concept including the case where only the part is provided in a C-shape, and the case where a plurality of engaging portions are provided intermittently, if provided intermittently, the locking condition is weak so that when ejecting the contents, The work of attaching and detaching the overcap is facilitated, and the force for pressing and deforming the overcap is small. In addition, as an example of the material of the elastic body used for the shoulder cover and the overcap, a commonly used synthetic resin such as polyethylene and polypropylene is used.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. The aerosol container 1 of the present invention comprises:
As shown in FIGS. 1 and 2, a container body 2, a shoulder cover 3, and an overcap 4 are provided. Container body 2
Comprises a can 21 and a mounting cup 22,
An inverted U-shaped portion 24 provided on a peripheral portion of the mounting cup 22 is clinched to a bead portion 23 provided on an upper portion of the can body 21. A valve mechanism 25 is held at the center of the mounting cup 22, and an injection button 27 is attached to a stem 26 of the valve mechanism 25. 28 is a gasket.

The shoulder cover 3 is provided with a hanging inner peripheral wall 32 continuously along the circumferential direction on the inner peripheral edge of the annular top wall 31, and at the outer peripheral edge of the top wall 31 from the inner wall 32. An outer peripheral wall 33 that hangs down slightly is similarly provided continuously along the circumferential direction. In addition, the interval between the lower portion of the inner peripheral wall 32 and the lower portion of the outer peripheral wall 33 is formed to be narrower than the inverted U-shaped portion 24, and the inverted U-shaped portion 24 is sandwiched between them.
A hollow portion 34 is formed at an upper portion between the outer peripheral wall 33 and the outer peripheral wall 33.

A plurality of slits 36 extending upward are provided in the lower part of the inner peripheral wall 32 along the circumferential direction.
Further, the inner peripheral wall 32 is provided with a claw portion 35 projecting outward over the entire periphery on a side of the lower end portion facing the outer peripheral wall 33. The claw portion 35 resiliently engages with the lower portion of the inner peripheral surface of the inverted U-shaped portion 24, and the shoulder cover 3 is firmly fixed to the mounting cup 22.

The outer peripheral wall 33 is formed in a stepped shape in which the upper part has a smaller diameter than the lower part, and the corner of the inner surface of the step part 37 is placed on the upper part of the inverted U-shaped part 24. . As shown in FIGS. 3 and 4, an engaged portion 38 that detachably engages with the engaging portion 41 of the overcap 4 is provided substantially at the center of the outer surface of the upper portion of the outer peripheral wall 33. It is provided continuously along the direction.

The overcap 4 is opened downward, and as shown in FIGS. 3 to 6, a pair of engaging portions 38 which are engaged with the engaged portions 38 are provided at opposed positions on the inner surface of the lower end. The engaging portions 41, 41 are formed in an arc shape along the circumferential direction. The overcap 4 can be recognized from the outside by marking the area where the engaging portion 41 on the outer surface is provided with a mark.

The engaged portion 38 is formed so as to protrude outward, while the engaging portion 41 is protruded so as to face inward on the opposite side to the engaged portion 38. Is formed. In a normal state where no external force is applied to the lower end of the overcap 4, as shown in FIG. 3, the distal end of the engaging portion 41 and the distal end of the engaged portion 38 overlap vertically and shallowly. When the outer cover 4 and the shoulder cover 3 are simultaneously removed, when an external force is applied so that the diameter of the lower portion of the overcap 4 is reduced, the engaging portion 41 moves along the slope of the cross-sectional shape as shown in FIG. The entire area of the engaged portion 38 is deeply overlapped. Therefore, the lower end surface of the overcap 4 and the shoulder cover 3 are so overlapped with each other that they can be deeply overlapped.
It is desirable to provide a gap between the stepped portion 37. The external force is transmitted to the upper portion of the shoulder cover 3 but is not transmitted to the lower portion.
The force for pinching 4 is the same as in normal times, and thus does not affect the force for removing shoulder cover 3 from container body 2.

The aerosol container of the present invention is not limited to the above embodiment. For example, overcap 4
May be provided with a plurality of slits at the bottom (not shown),
In this case, the external force for reducing the diameter of the overcap 4 can be reduced. In addition, the engagement part 41 is not limited to two places. The present invention is suitable for use in a small container main body 2 having a diameter of 35 mm or less, but can be used in a large container main body 2.

[0018]

As described above, according to the present invention, in the present invention, the inverted U-shaped portion is sandwiched between the inner peripheral wall and the outer peripheral wall with the shoulder cover attached to the container body. Moreover, since the claw portion of the inner peripheral wall is locked to the lower portion of the inner peripheral surface of the inverted U-shaped portion, there is no possibility that the claw portion will come off during normal use. Also, when removing the shoulder cover, grasping the shoulder cover and pulling it upward causes the pulling force applied to the claw to reduce the diameter of the lower portion of the inner peripheral wall by the amount of the slit, thereby locking the inverted U-shaped portion and the claw. It becomes weaker and easily comes off with human power.

According to the second aspect of the present invention, since the distal end of the engaging portion and the distal end of the engaged portion overlap each other, the degree of engagement between the shoulder cover and the overcap is weak. Work can be done easily. When disposing of the aerosol container, if the lower portion of the overcap attached to the shoulder cover is pressed and deformed in a direction in which the diameter is reduced by utilizing the elasticity of the overcap, the engaging portion and the engaged portion are displaced. The shoulder cover and the overcap can be simultaneously removed from the container body by pulling the shoulder cover and the overcap as they are deeply overlapped with each other and the locking condition is strengthened.
Therefore, the synthetic resin shoulder cover and the metal container body can be easily separated and disposed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an example of the present invention.

FIG. 2 is a longitudinal sectional view showing a state where the present invention is disassembled into a container body, a shoulder cover, and an overcap.

FIG. 3 is a vertical cross-sectional view of a main part showing a normal state of locking of a shoulder cover and an overcap.

FIG. 4 is a longitudinal sectional view of a main part showing a locking state at the time of disassembly in which the shoulder cover and the overcap are simultaneously removed by grasping the overcap.

FIG. 5 is a cross-sectional view taken along line AA of FIG. 1, and is a cross-sectional view of a main part showing a locking state of the shoulder cover and the overcap in a normal state.

FIG. 6 is a cross-sectional view of a main part showing a locking state at the time of disassembly in which the shoulder cap and the overcap are simultaneously removed by grasping the overcap.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aerosol container 2 Container main body 3 Shoulder cover 4 Overcap 24 Reverse U-shaped part 27 Injection button 32 Inner peripheral wall 33 Outer peripheral wall 35 Claw part 36 Slit 38 Engagement part 41 Engagement part

Claims (2)

[Claims] 1. A synthetic resin shoulder cover (3) is attached to a metal container main body (2) having an injection button (27), and the synthetic resin overcap (4) is attached to the shoulder cover (3). )
In the aerosol container (1) in which the shoulder cover (3) is detachably provided, a deformable elastic body is used as a material of the shoulder cover (3), and an inner peripheral wall (32) and an outer peripheral wall (33) provided on the shoulder cover (3) are provided. Between the inverted U-shaped part (24) of the container body (2)
And a plurality of slits (36) along the circumferential direction at the lower portion of the inner peripheral wall (32) and a claw portion (3) at the lower end portion.
5) The aerosol container wherein the claw portion (35) is elastically engaged with the lower portion of the inner peripheral surface of the inverted U-shaped portion (24). 2. A deformable elastic body is used as a material of the overcap (4), and an engaging portion (41) is formed in a lower part of an inner peripheral surface of the overcap (4) along a circumferential direction. At the same time, the shoulder cover (3) is formed with an engaged portion (38) which is engaged with the engaging portion (41) at a position having the same height, and is engaged with the engaging portion (41). The aerosol container according to claim 1, characterized in that the portion (38) overlaps with only the tip portion in a normal state, and the tip portion overlaps deeply when pressed and deformed.