JP2001146281A - Cap device for spray can - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure, facilitate the gas purging operation, and at the same time, prevent intrusion of dust and dirt or the like without generating a sense of incongruity in the appearance. SOLUTION: This cap device is equipped with a cap member 2 comprising a fitting protrusion 8, a fitting section 6 and a holding section 7. The fitting protrusion 8 is fitted on the annular caulking protrusion 58 of a mounting cup 73 and keeps a crowned state of the cap device to a spraying can 70. The fitting section 6 is formed at the center on the internal surface of a ceiling wall 4 in a manner to correspond with a stem 75. The holding member 7 is formed on the side section of the ceiling wall 4. Also, a gas-purging member 3, one end section of which is formed into a pressing section 13 for the stem 75, and the other end section 14 of which is fitted in the fitting section 6, is provided. Normally, the gas-purging member 3 is fitted in the holding hole of the holding section 7, and is held by the cap member 2. At the time of a gas-purging treatment, under a state wherein the fitted state of the cap member 2 is kept by the fitting between the annular caulking protrusion 58 and the fitting protrusion 8, the gas-purging member 3 fitted in the fitting section 6 presses the stem 75, and performs a gas-purging. The holding hole 11 works as a gas-purging port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap device for covering an injection can, such as an aerosol can or a fuel can, in which an object to be injected is sealed in a can body. The present invention relates to a cap device for an injection can having a so-called degassing mechanism for extracting and discharging an object from a can body.

[0002]

2. Description of the Related Art Aerosol cans are used in an extremely wide range of fields such as automobile-related articles in which a lubricant or a cleaner is sealed, cosmetic articles in which a sweat inhibitor, a hairdressing agent, etc. are sealed, or a paint spray. Are easily used.
Generally, two types of injection cans such as aerosol cans and fuel cans are provided as shown in FIGS. 10 (A) and 10 (B). That is, the spray can 70A shown in FIG.
Is generally referred to as a two-piece can, and is constructed by assembling a mountain cup structure 72 directly on an upper part of a can body 71 having a narrowed upper end. Things are enclosed.

[0003] The mountain cup assembly 72 includes a mountain cup member 73, a valve mechanism 74, the details of which are omitted,
A stem 75 for opening and closing the valve mechanism 74;
5 is made of a member such as a spring 76 that gives the closing behavior of the valve mechanism 74 to the valve member 5. Stem 75
Is equipped with a spray button 77 having a nozzle hole at its tip.

The mountain cup structure 72 is assembled to the can main body 71 by performing a caulking process in which the outer peripheral edge of the mountain cup member 73 is wound in a state of being superimposed on the upper edge of the can main body 71. Therefore, in the spray can 70A, an annular caulking convex portion 78 of the mountain cup member 73 is formed on the upper portion of the can main body 71. Utilizing this annular caulking projection 78 in the injection can 70A,
A cap member 79 is mounted to prevent erroneous injection when not in use and to improve the merchantability.

The cap member 79 has a height sufficient to cover the ejection button 77 and has an opening diameter substantially equal to the outer diameter of the annular caulking projection 78 and is formed of synthetic resin. The cap member 79 is integrally formed with a fitting projection 80 over the entire circumference at an inner peripheral portion of the opening edge. The fitting protrusion 80 has a slightly smaller diameter than the outer diameter of the annular caulking protrusion 78, and has a substantially arc-shaped cross section. The cap member 79 is mounted on the spray can 70A by being pushed into the upper portion of the spray can 70A so that the fitting convex portion 80 goes over the annular caulking convex portion 78 and is relatively fitted to the lower portion thereof. The spray can 70A has a spray button 7
When the stem 75 is pushed in through the valve 7, the valve mechanism 74 is opened and the contents are ejected.

[0006] The injection can 70B shown in FIG.
Is generally referred to as a three-piece can, and has the same basic configuration as the above-described injection can 70A, except that a can body 81 is formed in a cylindrical shape, and a substantially cone is formed between the can body 81 and the mountain cup member 73. A top dome 82 having a shape is interposed. The other configuration of the spray can 70B is the same as that of the spray can 70A, and the corresponding parts are denoted by the same reference numerals and description thereof will be omitted.

The outer periphery of the top dome 82 is
By being caulked so as to be wound in a state of being superposed on the upper edge of the can body 81, it is assembled to the can body 81. The top dome 82 is integrated with the mountain cup member 73 by performing a caulking process such that the inner peripheral edge is wound around in a state where the outer peripheral edge of the mountain cup member 73 is overlapped with the mountain cup member 73 to constitute the mountain cup structure 72. . Accordingly, in the injection can 70B, the annular outer caulking convex portion 83 is formed by the can main body 81 and the top dome 82, and the annular inner peripheral caulking convex portion 8 is formed by the top dome 82 and the mountain cup member 73.
4 are formed.

[0008] A cap member 85 is attached to the injection can 70B by using an outer caulking convex portion 83. The cap member 85 has a basic configuration similar to that of the above-described cap member 79, and is fitted around the inner periphery of the opening edge over the entire circumference.
Are integrally formed. The fitting projection 86 has a slightly smaller diameter than the outer diameter of the outer crimping projection 83, and has a substantially arc-shaped cross section. The cap member 85 is mounted on the spray can 70B by being pushed into the upper portion of the spray can 70B so that the fitting convex portion 86 goes over the outer caulking convex portion 83 and is relatively fitted to the lower portion thereof. The injection can 7
In the case of OB, the cap member 79 described above can be attached using the inner peripheral caulking convex portion 84.

By the way, since the gas and contents remain inside the spray can 70 even after use, there is a danger of explosion and the like when the jet can 70 is discarded as it is. For this reason, in the injection can 70, a process of discharging all the contents from the can main bodies 71 and 81 (hereinafter, referred to as a degassing process).
It is demanded to dispose in a so-called single use state. Conventionally, the injection can 70 has a so-called perforation method in which gas is released by perforating the can bodies 71 and 81. However, in order to further ensure safety during processing, a standard of such perforation method is used. Was changed. That is, the spray can 70 is used up to the end according to the purpose of use,
It has come to be discarded on the basis of shaking to confirm that no liquid or the like remains inside and discarding it as incombustible garbage after using up.

[0010] Therefore, in the spray can 70, after it is used, it is disposed of in a state where the spray button 77 is kept depressed by keeping the spray button 77 pressed. However, in the spray can 70, since the nozzle cap 77 is relatively small and must maintain a pressed state against the elastic force of the spring 76, the spray button 77
There is a problem that it is difficult to perform a gas release operation by continuously pressing for a long time.

In the injection can 70, in order to solve the above-mentioned problem, attention is paid to the cap members 79 and 85 which keep the crowned state with respect to the can main bodies 71 and 81, and a degassing mechanism is provided for these. Various structures have been proposed. Such a degassing mechanism is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-53289.
As described in Japanese Unexamined Patent Application Publication No. H11-150, "A lid having a gas releasing structure and a gas releasing method", and Japanese Patent Application Laid-Open No. 11-118098, "A gas releasing device for aerosol container and a lid having a gas releasing structure" One in which a punched portion is integrally formed has been proposed. Further, as the gas venting mechanism, for example, a cap as described in Japanese Patent Application Laid-Open No. 9-12069 “Lid for pressure-resistant container” and Japanese Patent Application Laid-Open No. 9-193980 “Tool for removing residual gas from gas cylinder and spray can” is disclosed. A so-called two-piece structure in which a gas vent is attached to a member has also been proposed.

[0012]

The above-described gas venting structure of the integral type does not require a step of assembling the gas venting member as compared with the two-piece gas venting structure, and the gas venting member is dropped and lost. There is a feature that the occurrence of a problem such as performing is avoided. On the other hand, the integrated gas vent structure increases the cost due to the complicated mold structure, and in particular, in the case of the reversing type, the fitting portion with one can main body is exposed, so that the appearance of the cap member is improved. In the case of a product that causes a feeling of discomfort and is used while being stored for a relatively long period of time, there is a problem that dust and the like easily accumulate in this fitting portion. In addition, the integrated gas vent structure
Since the stem is held in a pressed state against the elastic force of the spring, each part must be formed with a certain degree of mechanical rigidity, and it has been difficult to apply the present invention to a small cap member.

On the other hand, the two-piece degassing structure requires two types of molds, but the individual structure is simple, so that the overall cost is reduced and the overall appearance of the cap member is uncomfortable. There is a feature that it is not caused and can be applied to a small cap member. However, such a two-piece type gas vent structure has a problem that dust and the like enter into the inside from the gas vent hole and adhere to the stem or the like since the gas vent hole is formed through the cap member. Further, the two-piece gas vent structure has a problem that the appearance of the cap member is impaired when the gas vent hole is made large in diameter for efficient gas venting.

Therefore, the present invention is based on the above-described two-piece type gas vent structure, which has a simple structure and a simple gas venting operation, and has a good appearance of dust and the like inside without causing any unnatural appearance. The present invention has been proposed for the purpose of providing a cap device for a spray can in which intrusion is prevented.

[0015]

A cap device for a spray can according to the present invention, which achieves the above-mentioned object, mounts a mountain cup structure comprising a valve mechanism and the like to a mountain cup member on a can body, and simultaneously ejects an object to be sprayed. It is crowned by a sealed can or the like. The cap device of the injection can includes a cap member and a gas release member. The cap member is formed on the opening edge of the outer peripheral wall, and is fitted to the annular caulking convex portion of the mountain cup member so as to maintain a crowned state with respect to the injection can or the like, and a valve for opening the valve mechanism. It has a degassing member mounting portion formed at the center of the inner surface of the ceiling wall corresponding to the opening member, and a degassing member holding portion formed at a side portion of the ceiling wall.
The degassing member has a pressing portion formed at one end to press the valve opening member, and a fitting portion formed at the base end to be fitted into a holding hole formed as a through hole in the degassing member holding portion. It becomes.

According to the injection can cap device of the present invention configured as described above, the degassing member is usually
The fitting portion is fitted to the holding hole by fitting the fitting portion into the holding hole. After use, the fitting portion is removed from the degassing member holding portion and attached to the degassing member mounting portion. In this state, the cap member of the spray can is covered with the spray can or the like via the fitting protrusion in this state, so that the degassing member pushes the valve opening member and remains inside the can body. The ejection material and the ejection gas are released, and the holding hole of the degassing member holding portion acts as the ejection hole to discharge the object and the ejection gas to the outside.
Therefore, according to the cap device for the injection can, the operation of continuously pressing the valve opening member is unnecessary, and the remaining object and the injection gas are reliably discharged. According to the cap device of the injection can, the cap member and the degassing member are formed by a simple and inexpensive molding die, thereby suppressing an increase in cost. According to the injection can cap device, even when the cap member is small, since it is applied to a small injection can, the degassing member is assembled to the cap member so that there is no inconvenience such as loss and reliable degassing is performed. You will be
According to the cap device of the injection can, since the holding hole is closed in the normal state, the entry of dust and the like to the inside is prevented, thereby preventing the nozzle and the like from being stained.

Further, a cap device for a spray can according to the present invention, which achieves the above-mentioned object, includes a cap member and a degassing member. A cap member formed on an opening edge of the outer peripheral wall and relatively fitted to an annular caulked protrusion formed on the mountain cup member to maintain a crowned state with respect to the injection can or the like; and a valve mechanism. And a degassing member mounting portion formed at the center of the inner surface of the ceiling wall corresponding to the valve opening member that opens the airbag, and a holding hole is formed through a side portion of the ceiling wall. The degassing member has a fulcrum that is rotatably supported by the degassing member mounting portion at one end, and a pressing portion that presses the valve opening member is formed at the other end, and an outer periphery of the pressing portion. The holding projection is formed in the holding portion so as to be fitted into the holding hole.

According to the injection can cap device of the present invention configured as described above, the degassing member is usually
The holding protrusion is held and housed in a state substantially parallel to the ceiling wall in the cap member by being relatively fitted to the holding hole,
After use, it is turned upright about the degassing member mounting portion as a fulcrum. In this state, the cap device of the injection can is configured such that the cap member is covered by the injection can or the like via the fitting projection so that the degassing member pushes the valve opening member and remains inside the can body. In addition to discharging the object and the injection gas, the holding hole acts as a discharge hole and discharges the object and the injection gas to the outside. Therefore, according to the cap device for the injection can, the operation of continuously pressing the valve opening member is unnecessary, and the remaining object and the injection gas are reliably discharged. According to the cap device of the injection can, the cap member and the degassing member are formed by a simple and inexpensive molding die, thereby suppressing an increase in cost. According to the cap device of the injection can, even if the cap member is applied to a small injection can and the cap member is small, the degassing member is assembled to the cap to perform the reliable degassing without inconvenience such as loss. Become like According to the cap device of the injection can, since the holding hole is closed in the normal state, the entry of dust and the like to the inside is prevented, thereby preventing the nozzle and the like from being stained.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. The cap device 1 shown in FIGS. 1 to 4 as the first embodiment includes a cap member 2 and a gas release member 3 assembled to the cap member 2, and the above-described cap members 79, 8
By being covered with the spray can 70 instead of 5, it is possible to prevent erroneous spraying when not in use and to improve the merchantability. In addition, the cap device 1 is covered with the spray can 70 in a state where an operation described later is performed after use or the like,
The liquefied fuel gas remaining inside the injection can 70 or an appropriate object to be injected and the contents such as the injection gas are degassed.
Although the cap device 1 is applied to the two-piece injection can 70A as shown in FIG. 3, it may be applied to the three-piece injection can 70B or the mono-piece injection can. Of course.

The cap member 2 has substantially the same basic configuration as the above-described conventional cap member 79. For example, the cap member 2 is made of a synthetic resin such as polypropylene or polyethylene, and is continuously provided on the ceiling 4 and its outer periphery. It is formed so as to have a substantially truncated conical shape in which a lower portion composed of the outer peripheral wall 5 is opened. The outer peripheral wall 5 of the cap member 2 is
And has an opening diameter substantially equal to the outer diameter of the annular caulking projection 78. The cap member 2 includes a ceiling part 4 (not shown).
By forming a multiplicity of ribs on the surface of the outer peripheral wall 5, mechanical strength is maintained and operability is improved.

As shown in FIGS. 1 and 2, the cap member 2 is integrally formed with a degassing member mounting portion 6 and a degassing member holding portion 7 on a ceiling portion 4, and has an outer peripheral wall portion 5.
Are formed integrally with each other. The degassing member 3 is mounted on the degassing member mounting portion 6 when performing a degassing operation described later. The degassing member 3 is mounted and held in the degassing member holding portion 7 in a normal state. The fitting projection 8 holds the cap member 2 on the injection can 70 in a crowned state by being relatively fitted to the annular caulking projection 78.
Note that the cap member 2 may be used with the spray can 70 upright with the ceiling portion 4 as a mounting surface when performing a degassing process described later. Therefore, the surface of the ceiling portion 4 is configured as a flat surface. Is preferred.

The degassing member mounting portion 6 is a portion which is located at the center of the inner surface of the ceiling portion 4 and has a cylindrical shape and is provided so as to protrude therefrom.
A gas vent member mounting hole 9 which is a non-through hole is formed. The degassing member mounting portion 6 holds the degassing member 3 by inserting its base end into the degassing member mounting hole 9 as described later. Although the gas vent member mounting hole 9 is formed by a circular hole, the gas vent member 3 to be mounted may be positioned and prevented from rotating by, for example, forming a square hole or a cross hole. As shown in the drawing, the gas venting member mounting portion 6 has a core run-out suppressed by a plurality of reinforcing ribs 10 formed on the inner surface of the ceiling portion 4. The reinforcing ribs 10 also have an effect of maintaining the mechanical strength of the ceiling 4.

As shown in FIG. 1, the degassing member holding portion 7 is provided on the inner surface located on the outer peripheral side of the ceiling portion 4 so as to be connected to the ceiling portion 4 and the outer peripheral wall portion 5 and integrally protruded therefrom. It is a substantially semi-cylindrical portion, and a part of the outer peripheral portion is opened by notching the outer peripheral wall portion 5. The degassing member holding portion 7 has a degassing member holding hole 11 formed in the bottom surface thereof as a through hole. Although the gas release member holding hole 11 is formed by a circular hole, the gas release member 3 may be positioned and prevented from rotating by, for example, forming a square hole or a cross hole.

The cap member 2 is provided with a degassing member holding portion 7.
As a result, a recess and a through-hole are formed across the ceiling portion 4 and the outer peripheral wall portion 5. However, as described later, the degassing member 3 is normally closed by mounting the degassing member 3. The appearance without dust is maintained, and the intrusion of dust and the like into the inside is prevented. The degassing member holding unit 7
Is formed on the side of the ceiling part 4 over the ceiling part 4 and the outer peripheral wall part 5, but is not limited to such a position.
In the normal state in which the degassing member 3 is mounted, the degassing member 3 is mounted on the injection button 77.
Any position that does not collide with is acceptable.

The fitting projection 8 is formed integrally at the inner peripheral portion of the opening edge of the outer peripheral wall 5 over the entire periphery. Fitting projection 8
Has a diameter slightly smaller than the outer diameter of the annular caulking projection 78 of the injection can 70, and has a substantially arc-shaped cross section. The cap member 2 is mounted on the injection can 70 by being pushed into the upper portion of the injection can 70 so that the fitting convex portion 8 goes over the outer peripheral portion of the annular caulking convex portion 78 and is relatively fitted to the lower portion thereof.

A standard spray can 70 typically has a pushing force on its stem 75 of about 8 × 10 ⁴ Pa to about 30 × 10 ⁴ P
a. Therefore, the cap member 2
Is configured such that the fitting projection 8 and the annular caulking projection 78 are fitted with a fitting force greater than the pushing force of the stem 75 and the internal pressure. The cap member 2 is formed of the fitting convex portion 8 and the annular caulking convex portion 78 based on the material characteristics, the thickness of the outer peripheral wall portion 5, and the fitting margin between the fitting convex portion 8 and the annular caulking convex portion 78. The fitting force is determined. The fitting force is determined to be equal to or more than the pushing force of the stem 75, and preferably about 30 × 10 ⁴ Pa or more.

The degassing member 3 is also formed of a synthetic resin such as polyacetal resin, for example. As shown in FIG. 4, a stem pressing portion 13 is formed at one end of a round bar-shaped base 12 and at the other end. The holding part 14 is formed. The degassing member 3 includes a cap member 2 as described later.
Is mounted on the injection can 70 to perform the degassing operation,
It has a length sufficient to push the stem 75 to open the valve mechanism 74.

The base portion 12 has an outer diameter substantially equal to the inner diameter of the gas vent member holding hole 11 of the gas vent member holding portion 7, and usually penetrates the gas vent member holding hole 11 in a slightly tight fit state. The base 12 may be configured to be fitted to the gas release member holding hole 11 in a state where the base 12 is positioned together with the gas release member holding hole 11 by, for example, forming a polygonal shape.

The stem pressing portion 13 has a slightly larger diameter than the base portion 12 and has substantially the same diameter as the inner diameter of the degassing member holding portion 7, and has a height substantially equal to the height of the degassing member holding portion 7. It has a disk shape. The stem pressing portion 13 is formed with a stem fitting concave portion 15 in which the distal end of the stem 75 is fitted.
, A gas vent groove 16 is formed. The gas vent groove 16 has a depth greater than that of the stem fitting recess 15, thereby forming a gas vent space between the gas vent groove 16 and the tip of the stem 75 fitted in the stem fitting recess 15. So that When the gas release member 3 is mounted and held on the gas release member holding portion 7, the stem pressing portion 13 fills the gas release member holding portion 7 and fills the ceiling portion 4 of the cap member 2 and It constitutes a part of the outer peripheral wall 5. Therefore, the stem pressing portion 13 is connected to the cap member 2.
It also has the effect of not causing a sense of incongruity in the external appearance.

The holding portion 14 has a shaft portion having substantially the same diameter as the gas vent member mounting hole 9 of the gas vent member mounting portion 6. The holding portion 14 is fitted in the gas venting member mounting hole 9 in a slightly tight state when a gas venting operation described later is performed. The holding portion 14 may be configured to be mounted on the degassing member mounting portion 6 in a state where the holding portion 14 is positioned together with the degassing member mounting hole 9 by, for example, forming a polygon.

The degassing member 3 is a cap member 2
It may be formed of a synthetic resin material having a different color tone from the above.
In the spray can 70, the same design is often applied to the outer peripheral surface of the can main body 71, and there is a problem that the contents are difficult to see or peel off because the contents are identified by characters or labels. The cap device 1 can improve the usability by enabling the contents to be visually identified by the color tone of the stem pressing portion 13 exposed from the cap member 2. For example, in a paint can, the cap device 1 can identify the color of the paint by the color of the degassing member 3.

The cap device 1 configured as described above
In general, as shown in FIG. 1, the degassing member 3 is attached to the cap member 2 in the degassing member holding portion 7 thereof. That is, the degassing member 3 is inserted from the outside of the cap member 2 into the degassing member holding hole 11 of the degassing member holding portion 7 with the holding portion 14 as the insertion side. The gas release member 3 is maintained in a state where the large-diameter stem pressing portion 13 abuts against the bottom surface of the gas release member holding portion 7 and the base 12 is tightly fitted in the gas release member holding hole 11. As described above, since the stem pressing portion 13 is filled in the degassing member holding portion 7 and forms a part of the outer peripheral surface of the cap member 2, the cap device 1 does not cause a sense of incongruity in appearance, Also, it prevents dust and the like from entering the inside.

The cap device 1 is mounted on the injection can 70 by being pushed from the upper portion of the injection can 70 so that the fitting projection 8 gets over the annular caulking projection 78 and is fitted to the lower portion thereof. The cap device 1 retains the fitting state between the fitting protrusion 8 and the annular caulking protrusion 78,
The injection can 70 is reliably covered to prevent erroneous injection when not in use, and to improve the merchantability. Cap device 1
Indicates that the fitting force between the fitting projection 8 and the annular caulking projection 78 is about 3
Since the pressure is set to 0 × 10 ⁴ Pa, at the time of use, by twisting and pulling out the cap member 2,
It is easily removed from the spray can 70.

When disposing of the injection can 70 after use, the cap device 1 performs an operation of replacing the degassing member 3 with respect to the cap member 2 and then re-uses the injection can 70.
Attached to. In this case, the injection button 77 is withdrawn from the stem 75 of the injection can 70. The degassing member 3 is detached from the degassing member holding portion 7, and the holding portion 14 is fitted into the degassing member mounting hole 9 of the degassing member mounting portion 6 as shown by a chain line in FIG. It is assembled to the member 2. Therefore, the degassing member 3 is
The stem pressing portion 13 is attached to the center of the inner surface of the cap member 2 with the stem pressing portion 13 facing downward.

In this state, the cap unit 1 and the stem fitting recess 1 of the cap member 2
The height dimension 5 is set smaller than the height dimension of the tip of the stem 75 in the natural state from the annular caulking projection 78 of the injection can 70. The cap device 1 includes a degassing member 3
Is removed from the degassing member holding portion 7, a through hole is formed in the cap member 2 by the degassing member holding hole 11.

As described above, the cap device 1 has the degassing member 3 attached to the degassing member mounting portion 6,
The cap member 2 is pushed from above the injection can 70.
As shown in FIG. 3, the cap device 1 is mounted on the injection can 70 by the fitting projection 8 getting over the annular caulking projection 78 and being fitted to the lower part thereof. In the cap device 1, the gas release member 3 pushes down the stem 75 whose tip is relatively fitted to the stem fitting recess 15 against the spring 76 and the internal pressure. As a result, the valve mechanism 74 of the spray can 70 is opened, and the contents remaining inside the spray can 70 are discharged from the stem 75.

In the cap device 1, as described above, the fitting projection 8 and the annular caulking projection 78 reduce the fitting force by about 30 × 10 ^4.
By setting the pressure to Pa, regardless of the elastic force and the internal pressure of the spring 76 applied via the stem 75, the injection can 70
Of the cap member 2 is maintained. Therefore, in the cap device 1, the degassing operation is continued while the pressing state of the stem 75 by the degassing member 3 is maintained. In the cap device 1, the residual content released from the stem 75 is released into the cap member 2 through the gas release groove 16, and is discharged through the gas release member holding hole 11 as shown by an arrow in FIG. Release to the outside.

In the cap device 1, the mounting state of the cap member 2 with respect to the injection can 70 is maintained,
All the remaining contents are discharged from the can body 71. In the cap device 1, at the time of the degassing process, the degassing member holding hole 11 functions as a gas release hole. Cap device 1
The gas vent member holding hole 1 is
1 is opened and acts as a gas discharge hole, so that the gas is released from the inside of the can through the gas release member holding hole 11 by performing a gas release process in a state in which the jet unit 70 is leaned against the ceiling part 4 as a mounting surface. Solvents and the like can be released to the outside.

The cap device 20 shown in FIGS. 5 and 6 as a second embodiment has a degassing member 22 which is rotatably combined and housed inside a cap member 21 so that the cap device 21 can be used during degassing processing. It is characterized in that it does not require the operation of attaching and detaching the gas release member 22. That is, the cap member 21 has the gas release member mounting portion 25 and the gas release member holding portion 26 formed on the ceiling portion 23, and is fitted over the entire inner periphery of the opening edge of the outer peripheral wall portion 24. The basic configuration in which the protrusion 27 is integrally formed is the same as that of the cap member 2 described above.

The gas releasing member mounting portion 25 has a substantially cylindrical shape in which a gas releasing member mounting hole 28 which is a non-through hole for rotatably supporting one end of the gas releasing member 22 is formed as described later. It is a part, and is formed so as to protrude integrally with the central part of the inner surface of the ceiling part 23. The degassing member mounting portion 25 forms a fulcrum space portion 29 by making the bottom of the degassing member mounting hole 28 a substantially spherical space having a slightly larger diameter than the opening, and has one side surface having a height. The guide slit 30 is configured by being opened with a predetermined width dimension in the direction.

The fulcrum space 29 is not limited to a substantially spherical space, but may be any part that rotatably supports one end of the gas release member 22 in a state where it is prevented from being pulled out. Therefore, the space shape of the fulcrum space 29 is appropriately determined in accordance with the shape of one end of the gas release member 22. In the guide slit 30, a click convex portion for positioning the degassing member 22 at the time of degassing processing to be described later may be formed near the opening and formed on the inner wall thereof.

The gas release member holding portion 26 is formed of a through hole formed in the ceiling portion 23 at a side corresponding to the guide slit 30 of the gas release member mounting portion 25. The degassing member holding portion 26 is provided with the normal degassing member 2 as described later.
2 and is opened at the time of degassing processing to function as a degassing hole. Although the gas release member holding portion 26 is configured as a circular through hole, it may be formed in an appropriate shape such as a polygon, or may be configured with two or three through holes if space is secured. Is also good.

The fitting projection 27 is provided with the cap member 2 described above.
As in the case of the fitting projection 8 of FIG.
8 has a slightly smaller diameter than the outer diameter, and has a substantially arc-shaped cross section. The fitting protrusion 27 is formed by the cap member 2.
When 1 is pushed into the upper portion of the injection can 70, it goes over the outer peripheral portion of the annular caulking convex portion 78 and is fitted to the lower portion of the annular caulking convex portion 78, thereby maintaining the cap member 21 attached to the injection can 70. The fitting convex portion 27 presses the stem 75 against the annular caulking convex portion 78 and the internal pressure, that is, about 3 times.
The fitting is performed with a fitting force greater than 0 × 10 ⁴ Pa.

The degassing member 22 has a slightly shorter axis than the height of the cap member 21, and is formed at a fulcrum 32 and a stopper 33 formed at one end of the base 31 and at the other end of the base 31. The entire stem pressing portion 34 is integrally formed of a substantially rod-shaped member. The fulcrum part 31 is formed in a substantially spherical shape corresponding to the fulcrum space part 29 formed in the degassing member mounting part 25 of the cap member 21. The stopper portion 33 is formed in a flange shape on the outer peripheral portion of the base portion 31. The stopper portion 33 has a larger diameter than the opening diameter of the gas venting member mounting hole 28, and corresponds to a position where the gas venting member 22 abuts on the opening edge of the base portion 31 in a state of being mounted on the gas venting member mounting portion 25. Is formed.

The stem pressing portion 34 is a portion configured substantially in the same manner as the stem pressing portion 13 of the degassing member 3 described above.
Are formed, and a gas vent groove 36 is formed across the stem fitting recess 35. Gas vent groove 36
The stem 7 fitted in the stem fitting recess 35 is made larger in depth than the stem fitting recess 35.
A space for venting gas is formed between the end of the gasket 5 and the tip of the gasket 5.

The stem pressing portion 34 is integrally provided with a holding projection 37 on the outer periphery thereof. The holding convex portion 37 is protruded from the side corresponding to the guide slit 30 in a state where the degassing member 22 is mounted on the degassing member mounting portion 25. The distance between the holding projection 37 and the fulcrum 31 is adjusted by adjusting the distance between the fulcrum 31 and the degassing member mounting portion
5 is set to be equal to the distance between the fulcrum space portion 29 and the degassing member holding portion 26 so as to protrude. The holding projection 37 is
The outside diameter is substantially equal to the inside diameter of the gas release member holding portion 26, and the protrusion amount is substantially equal to the thickness of the ceiling portion 23.

The holding projection 37 may be formed in an appropriate shape according to the shape of the hole of the degassing member holding portion 26. Further, two or three holding protrusions 37 may be provided on the outer peripheral portion of the stem pressing portion 34, and may be configured to be relatively fitted to two or three degassing member holding portions 26. . With such a configuration, the cap device 20 allows the degassing member 22 to be more firmly held with respect to the cup member 21 and allows degassing to be performed more quickly.

The cap device 20 configured as described above
The gas vent member 22 is assembled to the cap member 21 by fitting the fulcrum portion 32 into the fulcrum space portion 29 of the gas vent member mounting portion 25. Degassing member 22
Is in a normal state, as shown in FIG.
Is held parallel to the inner surface of the ceiling portion 23, and the holding projection 37 is tightly fitted to the degassing member holding portion 26 to be held in this state. The holding convex portion 37 is filled in the degassing member holding portion 26 and forms a part of the outer surface of the ceiling portion 23 of the cap member 21. Therefore, in the normal state, the cap member 21 does not have an opening in the cap member 21 in the normal state, so that it does not cause a sense of incongruity in appearance, and also prevents entry of dust and the like into the inside.

When performing the degassing process, the cap device 20 is attached to the cap member 21 with respect to the degassing member 22.
Is rotated from the state shown in FIG. 5 to the upright state as shown in FIG. The degassing member 22 is released from the fitted state with the degassing member holding portion 26 when the holding projection 37 is pushed in, and the fulcrum portion 32 rotates in the fulcrum space 29. The degassing member 22 is rotated in the direction of the arrow in FIG. 5 by the base 31 sliding in the guide slit 30. As shown in FIG. 6, the degassing member 22 is in a state in which the base 31 abuts against the inner wall of the degassing member mounting hole 28 facing the guide slit 30 as shown in FIG.
It stands upright against. In this state, the stopper portion 33 of the gas release member 22 abuts on the opening edge of the gas release member holding portion 26.

In this state, the height of the fitting protrusion 27 of the cap member 21 and the height of the stem fitting recess 35 of the gas venting member 22 are changed from the annular caulking protrusion 78 of the injection can 70 to the natural state. Is set smaller than the height dimension of the distal end of the stem 75. In the cap device 20, the holding protrusion 37 of the gas release member 22 is
The cap member 21 has a through hole formed by the gas release member holding portion 26 by being removed from the cap member 21.

In the cap device 20, the cap member 21 is pushed in from the upper part of the injection can 70 in a state where the degassing member 22 stands upright with respect to the degassing member mounting portion 25 as described above. As shown in FIG. 6, the cap device 20 is mounted on the injection can 70 with the fitting protrusion 37 riding over the annular caulking protrusion 78 and being relatively fitted to the lower portion thereof. In the cap device 20, the degassing member 22 pushes down the stem 75, the tip of which is relatively fitted in the stem fitting recess 35, against the spring 76 and the internal pressure. Injection can 70
As a result, the valve mechanism 74 is opened and the remaining contents are discharged from the stem 75.

In the cap device 20, the fitting state of the cap member 21 with respect to the injection can 70 is maintained by the fitting projection 37 and the annular caulking projection 78 being relatively fitted as described above. Therefore, in the cap device 20, the pressed state of the stem 75 by the gas release member 22 is maintained, and the gas release operation is continued. In the cap device 20, the residual contents discharged from the stem 75 are discharged into the cap member 21 through the gas release groove 36.
The gas is released to the outside via the gas release member holding portion 26. In the cap device 20, the mounting state of the cap member 21 with respect to the injection can 70 is maintained, so that the can body 71
To release all residual contents. Cap device 20
As described above, during the degassing process, the degassing member holding portion 26 functions as a gas release hole.

The cap device 40 shown in FIGS. 7 to 9 as a third embodiment has the first basic configuration in which the above-described degassing member 3 is assembled to the cap member 41.
The same as the cap device 1 shown in the embodiment,
It is characterized in that the cap member 41 is held on the inner peripheral side of the annular caulking convex portion 78 of the injection can 70. Therefore, in the following description of the cap device 40, the same parts as those of the cap device 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the spray can 70, the annular caulking convex portion 58 of the mountain cup member 73 is generally formed to have an outer diameter of about 32 mm and an inner diameter of about 24 mm. Therefore, in the cap device 1 described above, in a state where the cap member 2 is covered with the injection can 70, the degassing member 3 formed while maintaining the mechanical rigidity of the cap member 2 collides with the stem 75. Space is secured so that they do not match.

The cap device 40 includes a cap member 41.
However, as will be described later in detail, the gas bleeding member disposition bulging portion 43 and the two dummy bulging portions 44 (4
4a, 44b) are integrally swelled. The main body portion 42 includes a flat ceiling portion 45 and an outer peripheral wall portion 46 having a slightly smaller outer diameter so as to be fitted to an annular caulking convex portion 78 having an inner diameter of about 24 mm. The main body 42 is integrally formed with a gas vent mounting portion 48 having a non-through hole gas vent mounting hole 47 at the center of the inner surface of the ceiling 45. The gas vent mounting portion 48 has mechanical strength maintained by a plurality of reinforcing ribs 49.

The main body 42 has an arc-shaped fitting projection 50 (50a, 50a) on the outer peripheral surface of the opening end of the outer peripheral wall 46, respectively.
b, 50c) are integrally protruded. Each mating projection 50
Are formed on the outer peripheral surface of the outer peripheral wall 46 which is divided by the bulging member arrangement bulging portion 43 and the dummy bulging portion 44. Each fitting projection 50 forms an annular projection on the outer peripheral wall 46 having a diameter slightly larger than the inner diameter of the annular caulking projection 78.

The bulging portion 43 provided with the gas release member is provided in the main body 4.
The second outer peripheral wall portion 46 is formed so as to bulge in the peripheral surface direction. The gas venting member-provided bulging portion 43 is formed to protrude in the circumferential direction on the outer peripheral wall portion 46 of the main body portion 42, and its ceiling portion is pressed against the ceiling portion 45 of the main body portion 42 by the stem pressing of the gas venting member 3. The step is formed with a height corresponding to the portion 13. A gas vent member holding hole 51 that holds the gas vent member 3 by fitting the base portion 12 is provided through the gas vent member arrangement bulging portion 43. The bulging portion 43 provided with the degassing member 43 is formed so as to protrude from the main body portion 42 in this manner, thereby avoiding collision between the held degassing member 3 and the stem 75.

The dummy bulging portion 44 has the same shape as the above-described bulging portion 43 provided with the degassing member, except that the ceiling portion forms the same surface as the ceiling portion 45 of the main body portion 42, and is integrated with the main body portion 42. Swelling. Swelling portion 4 provided with degassing member
The dummy bulge 3 and the dummy bulge 44 are bulged at regular intervals on the outer peripheral wall 46 of the main body 42. Accordingly, the cap member 41 has a characteristic shape by being harmonized as a whole and having the bulging portion 43 provided with the gas release member and the dummy bulging portion 44.

In the cap member 41, the fitting projection 50 formed on the outer peripheral wall portion 46 of the main body portion 42 is fitted to the inner peripheral portion of the annular caulking convex portion 78 of the mountain cup member 73 as described above, and the injection is performed. The can 70 is covered. Cap member 41
In this crowned state, the gas release member provided bulging portion 43
The dummy bulging portion 44 protrudes outside the annular caulking convex portion 78. For this purpose, the gas vent member swelling portion 43 and the dummy swelling portion 44 are provided at the opening ends of the respective side wall portions 52 connected to the outer peripheral wall portion 46 of the main body portion 42 in FIGS. As shown in FIG. 7, a relief groove 53 having a height slightly larger than the height of the annular caulking convex portion 78 is formed by notching.
Since the escape groove 53 is provided outside the outer peripheral wall portion 46 of the main body portion 42, the escape groove 53 does not form an opening even when the cap member 41 is covered by the injection can 70. Therefore, the cap device 40 prevents intrusion of dust and the like into the inside.

The cap device 40 constructed as described above
Is usually with respect to the cap member 41 as shown in FIG.
The gas release member 3 is attached to the gas release member holding hole 51 of the gas release member arrangement bulging portion 43. The cap device 40 is pushed in from the upper portion of the injection can 70 so that the fitting projection 50 of the main body portion 42 gets over the annular caulking projection 78 and relatively fits into the lower portion on the inner peripheral side thereof. Attached to. The cap device 40 includes a main body 42
The swelling portion 43 provided with the degassing member is formed so as to protrude, so that the abutment between the holding portion 14 of the degassing member 3 and the stem 75 is avoided. The cap device 40 has the relief groove 53 formed in the bulging portion 43 provided with the gas release member and the dummy bulging portion 44.
8 faces the injection can 70.

When the injection can 70 is discarded after use or the like, the cap device 42 is attached to the injection can 70 again after performing a replacement operation of the degassing member 3 on the cap member 42. The cap device 40 includes a fitting projection 50.
Since the fitting state between the and the annular caulking convex portion 78 is maintained, the pressed state of the stem 75 by the gas release member 3 is maintained. As a result, the valve mechanism 74 of the spray can 70 is opened, and the contents remaining inside the spray can 70 are discharged from the stem 75. The cap device 40 discharges the residual content discharged from the stem 75 to the outside through the gas release member holding hole 51 of the gas release member disposition bulging portion 43.

In each of the above embodiments,
Although the injection button is removed from the stem to perform the degassing process, it goes without saying that the nozzle cap may be pressed by the degassing member. In this case, the gas venting member does not require the configuration of the stem fitting concave portion and the gas venting groove in the stem pressing portion.

[0063]

As described above in detail, according to the injection can cap device of the present invention, the cap member is covered with the injection can, so that the valve opening member is pressed via the gas release member. Since degassing is performed, it is not necessary to perform an operation of continuously pressing the valve opening member, and the remaining object to be injected and the injected gas can be easily and reliably discharged. According to the cap device of the injection can, the holding hole for holding the degassing member in the normal state acts as a gas release hole during the degassing process, so that the product can be maintained in the normal state and dust and the like can be kept inside. Does not invade. Furthermore, according to the cap device of the injection can, since the cap member and the gas release member are molded by a simple and inexpensive molding die, it can be provided at low cost.
Furthermore, according to the injection can cap device, even when the cap member is small because it is applied to a small injection can, there is no inconvenience such as loss by assembling the degassing member, and it is reliable. Degassing is performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a cap device of a spray can according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the cap device.

FIG. 3 is a vertical sectional view of a main part for explaining a use state in which the cap device is mounted on a spray can.

FIG. 4 is a front view of a degassing member included in the cap device.

FIG. 5 is a longitudinal sectional view of a cap device shown as a second embodiment of a cap device for an injection can according to the present invention.

FIG. 6 is a vertical sectional view of an essential part for explaining a use state in which the cap device is mounted on a spray can.

FIG. 7 is a vertical sectional view of a cap device shown as a third embodiment of a cap device for a spray can according to the present invention.

FIG. 8 is a bottom view of the cap device.

FIG. 9 is a vertical sectional view of a main part for explaining a use state in which the cap device is mounted on a spray can.

FIGS. 10A and 10B are front views of the spray can, wherein FIG. 10A shows a spray can having no top dome, and FIG. 10B shows a spray can having a top dome.

[Description of Signs] 1 cap device, 2 cap member, 3 degassing member, 4 ceiling portion, 5 outer peripheral wall portion, 6 degassing member mounting portion, 7 degassing member holding portion, 8 fitting convex portion, 9 degassing Member mounting hole, 10 Reinforcement rib, 11 Gas release member holding hole, 12 base, 13 Stem pressing portion, 14 Holding portion, 15 Stem fitting concave portion, 16 Gas release groove, 20
Cap device, 21 cap member, 22 gas release member, 23 ceiling portion, 24 outer peripheral wall portion, 25 gas release member mounting portion, 26 gas release member holding portion, 27 fitting convex portion,
28 gas vent member mounting hole, 29 fulcrum space, 30 guide slit, 31 base, 32 fulcrum, 33 stopper, 34 stem pressing part, 35 stem fitting recess,
36 gas vent groove, 37 holding convex part, 40 cap device, 41 cap member, 42 main body part, 43 bulging part provided with gas bleeding member, 44 dummy bulging part, 45 ceiling part, 46 outer peripheral wall part, 47 gas vent Component mounting hole, 48
Gas vent member mounting part, 49 Reinforcement rib, 50 Fitting convex part, 51 Gas vent member holding hole, 52 Side wall, 53 Escape groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Motoki Goto, Inventor 4-37-6 Matsushima, Edogawa-ku, Tokyo Inside Toho Metal Industry Co., Ltd. (72) Gunji Nagata 2-4-1-10 Higashikanda, Chiyoda-ku, Tokyo Toshima Building Camellia Seiko Co., Ltd. F-term (reference) 3E014 PA01 PB02 PE15 PE21 PF04 PF09 4F033 RA02 RA20 RB03 RC15 RC21

Claims (3)

[Claims] 1. A cap device for an injection can that is assembled with a can body and a mountain cup structure in which a valve mechanism or the like is assembled to a mountain cup member and that is covered with an injection can or the like in which an object to be injected is enclosed. Corresponding to the fitting convex portion formed on the edge and holding the crowned state with respect to the injection can and the like by being relatively fitted to the annular caulking convex portion of the mountain cup member, and the valve opening member for opening the valve mechanism. A cap member having a degassing member mounting portion formed at the central portion of the inner surface of the ceiling wall and a degassing member holding portion formed at a side portion of the ceiling wall; and a pressing portion for pressing the valve opening member at one end portion And a gas venting member having a base end formed with a fitting portion fitted in a holding hole formed as a through hole in the gas venting member holding portion. The degassing member is usually attached to the cap member by fitting the fitting portion into the holding hole, and is removed from the degassing member holding portion after use or the like, and the degassing member is removed. The cap member is mounted on the mounting portion, and in this state, the cap member is covered by the injection can or the like via the fitting convex portion, so that the valve opening member is pushed in and the cap remaining in the can body is pushed. A cap device for an injection can that discharges an ejected material and a jet gas and that the holding hole of the degassing member holding portion functions as a discharge hole to discharge the object and the injected gas to the outside. 2. A cap device for an injection can, wherein a mountain cup structure comprising a valve mechanism and the like assembled to a mountain cup member is assembled to a can body, and the injection can cap is covered by an injection can or the like in which an object to be injected is enclosed. A fitting protrusion that holds a crowned state with respect to an injection can or the like by being relatively fitted to an annular caulking protrusion formed on the edge and formed on the mountain cup member,
A venting member mounting portion formed at the center of the inner surface of the ceiling wall corresponding to the valve opening member that opens the valve mechanism, and a holding hole is formed to penetrate a side portion of the ceiling wall. A cap member, a fulcrum portion rotatably supported by the degassing member mounting portion is formed at one end portion, and a pressing portion that presses the valve opening member is formed at the other end portion. A gas release member having a holding protrusion formed on the outer peripheral portion to be relatively fitted to the holding hole, wherein the gas release member is usually fitted with the holding protrusion relative to the holding hole. The cap member is held and accommodated in the cap member in a state substantially parallel to the ceiling wall, and is turned upright about the degassing member mounting portion as a fulcrum after use or the like. Convexity Through the injection can and the like, thereby pushing the valve opening member to release the object and the injection gas remaining inside the can body, and the holding hole acts as a release hole. And discharging the object and the injection gas to the outside. 3. The cap member covers the injection can or the like by the fitting portion being relatively fitted to an annular caulking convex portion on the inner peripheral side formed in the mountain cup member. The cap device for a spray can according to claim 1 or 2, wherein