JP2016098020A - Cap opener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap opener which enables a user to unfailingly remove a cap of a polyethylene terephthalate bottle with a small force, has a compact form, and does not cause an obstruction even if the cap opener remains attached to the cap.SOLUTION: A cap opener 1 includes: an opener body 10 attached to a cap; and elastic members 20 held by the opener body 10 and having elasticity. The opener body 10 includes a cylindrical inner cylinder part in which an inner peripheral surface configured to be engaged with an outer peripheral surface of the cap is formed; an outer cylinder part 12 which contacts with the inner cylinder part from an exterior side and has a square cylindrical shape; elastic member housing chambers 13, each of which is formed between a corner part 12a of the outer cylinder part 12 and the inner cylinder part; and window parts, each of which is formed in the inner cylinder part and allows the elastic member housing chamber 13 and the inner side of the inner peripheral surface to communicate with other. Each elastic member 20 is housed in the elastic member housing chamber 13 and partially protrudes to the inner side relative to the inner peripheral surface of the inner cylinder part through the window part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cap opener used when opening a cap of a plastic bottle or the like.

  PET bottles are widely used as containers for drinks such as drinking water, tea, and juice. A cylindrical cap is attached to the plastic bottle. The cap is opened and closed each time a drink is taken. A knurled processed portion for preventing slipping is formed on the outer peripheral surface of the cap.

However, when the cap is opened (removed) for the first time, a part of the cap is connected to an annular portion fitted on the neck of the plastic bottle body. For this reason, when opening for the first time, it is necessary to cut | disconnect this connection part, and comparatively big force is required. Further, for example, in a case where the content is large, such as 2 liters, a plurality of people in the family may drink the drink in the same plastic bottle. In such a case, if the previous user of the plastic bottle tightens the cap tightly, the next time it is opened, it cannot be opened unless it is turned with a relatively large force. For this reason, the elderly and small children may not be able to open the cap well.
For example, Patent Literatures 1 to 3 propose cap openers for solving such problems.
In the cap opener of Patent Document 1, the concave and convex portions of the cylindrical portion are fitted into the knurled processed portion on the outer peripheral surface of the cap, and the handle portion is turned to open the cap.

  Moreover, the cap opener of patent document 2 similarly opens a cap by inserting the unevenness | corrugation of a circular hole in the knurled process part of the outer peripheral surface of a cap, hooking a finger on a finger hook part, and turning.

  The cap opener of Patent Document 3 is made of soft plastic, and the cap is opened by inserting the engaging portion into the cap, grasping the concave portion between the convex portion with the base of the finger and turning it.

  The cap openers disclosed in Patent Documents 1 to 3 can be opened by turning the cap with a small force, compared with the case where the outer periphery of the cap is directly gripped. Can be opened.

JP 2004-203478 A JP 2009-126517 A JP 2011-88665 A

  However, although the cap openers of Patent Documents 1 and 2 have unevenness to be engaged with the knurled processed portion of the cap, these engagements may not be surely performed. In this case, there is a possibility that the cap cannot be opened due to slippage between the cap and the cap opener.

  On the other hand, since the cap opener of Patent Document 3 is formed of a soft plastic resin, it can be prevented from slipping by biting into the knurled processed portion of the cap. It is necessary to grip and turn it.

  Furthermore, the cap openers disclosed in Patent Documents 1 to 3 are relatively large in size with respect to the cap, and are obstructive when attached to the cap. For this reason, an elderly person or a small child is accompanied by a complicated operation of attaching a cap opener to the cap every time the cap is opened.

  The present invention has been made in view of the above-described circumstances, and can reliably open a cap such as a plastic bottle with a relatively small force, and does not get in the way even when the cap is mounted on the cap in a compact configuration. The purpose is to provide an opener.

  The invention according to claim 1 includes an opener main body mounted on the cap, and an elastic member having elasticity held by the opener main body, and the opener main body is engaged with an outer peripheral surface of the cap. A cylindrical inner tube portion having a surface formed thereon, a rectangular tube-shaped outer tube portion circumscribing the inner tube portion, and an elastic member formed between the corner portion of the outer tube portion and the inner tube portion A storage chamber; and a window portion formed in the inner cylinder portion and communicating with the elastic member storage chamber and the inner peripheral surface of the inner cylinder portion, wherein the elastic member is the elastic member storage chamber. And a part thereof is protruded inward from the inner peripheral surface of the inner cylinder portion through the window portion.

  According to a second aspect of the present invention, in the cap opener according to the first aspect, the inner peripheral surface of the inner cylindrical portion is formed in a tapered shape having a lower end side diameter smaller than a lower end side diameter. Features.

According to a third aspect of the present invention, in the cap opener according to the first or second aspect, the opener body has a convex shape and a concave shape along the generatrix direction on the inner peripheral surface of the inner cylinder portion in the circumferential direction. It is characterized in that irregularities repeated alternately are formed.
The invention according to claim 4 is the cap opener according to any one of claims 1 to 3, wherein the elastic member is formed in a bar shape.

According to a fifth aspect of the present invention, in the cap opener according to the fourth aspect, the elastic member storage chamber has a cylindrical mounting portion extending from the lower side toward the upper side, and an elastic member mounting opening is opened at the upper end. The elastic member is formed in a cylindrical shape, and is attached to the attachment portion via the elastic member attachment port.
The invention according to claim 6 is the cap opener according to claim 5, further comprising a lid member for closing the elastic member mounting port.

  The invention according to claim 7 is the cap opener according to any one of claims 1 to 6, wherein the outer tube portion is formed in a regular square tube shape with rounded corners. .

  According to the first aspect of the present invention, the cap opener is configured such that a part of the elastic member stored in the elastic member storage chamber between the corner portion of the rectangular tube-shaped outer tube portion and the cylindrical inner tube portion is the window portion. It protrudes inward from the inner peripheral surface of the inner cylinder part. For this reason, for example, when the inner peripheral surface of the inner cylinder portion is engaged with the outer peripheral surface of the cap of the PET bottle, the elastic member is compressed and bites into the knurled processed portion of the cap. Accordingly, when the cap opener is attached to the cap and rotated, the cap can be reliably rotated and opened without causing a slip between the outer peripheral surface of the cap and the inner peripheral surface of the cap opener.

  In addition, the cap opener is formed so that the corner of the outer cylinder protrudes outward from the inner cylinder, so when removing the cap, the cap opener is turned by putting a finger on the corner from the outside. As compared with the case where the cap is directly turned by hand, the cap can be reliably turned without sliding with a small force.

  Further, as described above, the cap opener can be accommodated in such a size that the corner portion of the outer cylinder portion protrudes from the inner cylinder portion, so that the whole can be configured compactly. For this reason, even if it is attached to the cap, it does not get in the way, and every time the cap is removed, it is possible to omit the troublesome work of attaching to the cap.

  According to the invention of claim 2, the cap opener is formed in a taper shape in which the inner peripheral surface of the inner cylinder portion has a smaller diameter on the upper end side than the diameter on the lower end side. On the other hand, it can respond flexibly.

  According to the third aspect of the present invention, the cap opener has irregularities formed on the inner peripheral surface of the inner cylindrical portion engaged with the outer peripheral surface of the cap. In addition to the elastic member biting in, the concave and convex portions engage with the knurled processed portion. Thereby, the slip of a cap and a cap opener can be prevented more reliably.

  According to the invention of claim 4, since the elastic member is formed in a rod shape, the cap opener is suitable for a vertically long elastic member storage chamber formed between the inner cylinder part and the corner part of the outer cylinder part. Can be stored.

  According to the invention of claim 5, since the elastic member of the cap opener is formed in a cylindrical shape, the elastic member is mounted on the cylindrical mounting portion of the elastic member storage chamber via the elastic member mounting port. Can do. After mounting, the reaction force when the elastic member bites into the knurled processed part of the cap can be firmly received by the mounting part to prevent excessive deformation of the elastic member, so the cap and the cap opener can slip. Furthermore, it can prevent reliably.

  According to the sixth aspect of the present invention, the cap opener can prevent the elastic member from dropping off unnecessarily because the lid member can close the elastic member mounting port. In addition, if a design or the like is applied to the surface of the lid member, the cosmetics of the cap opener can be improved or used for CM.

  According to the invention of claim 7, since the outer cylinder part is formed in a regular square cylinder with rounded corners, the outer cylinder part is, for example, a corner between the corner part of the outer cylinder part and the inner cylinder part. A larger elastic member storage chamber can be ensured than in the case of a regular hexagonal cylindrical shape or a regular octagonal cylindrical shape. Further, when the cap opener is rotated, the corner portion of the outer cylinder portion is caught by the hand, so that it is difficult to slip and force is easily applied.

It is a disassembled perspective view of the cap opener 1. FIG. (A), (B) is a figure explaining the opener main body 10, Among these, (A) is the perspective view which looked at the opener main body 10 from diagonally upward, (B) looked at the opener main body 10 from diagonally downward. FIG. (A)-(E) is a figure explaining the opener main body 10, Among these, (A) is a front view, (B) is a top view, (C) is a bottom view, (D) is in (A). AA arrow directional view, (E) is a BB arrow directional view in (B). (A)-(C) are the figures explaining the cover member 30, Among these, (A) is a front view, (B) is a top view, (C) is an enlarged view of F part in (A). . (A) is a front view explaining the state which attached the cap opener 1 to the cylindrical cap Ca, (B) is a DD line | wire arrow line view in (A). (A) is a front view explaining the state which attached cap opener 1 to taper-shaped cap Ca, (B) is an EE arrow directional view in (A). (A) is a perspective view explaining the state which stuck the design sticker 40 to the cover member 30, (B) is a figure explaining the design sticker 40 from which the designs D1-D5 each differ.

Hereinafter, embodiments to which the present invention is applied will be described in detail with reference to the drawings. In addition, in each drawing, the member etc. which attached | subjected the same code | symbol are the things of the same or similar structure, The duplication description about these shall be abbreviate | omitted suitably. Moreover, in each drawing, members and the like that are not necessary for the description are omitted as appropriate.
<Embodiment 1>
A cap opener 1 according to a first embodiment to which the present invention is applied will be described with reference to FIGS.

1 to 7, FIG. 1 is an exploded perspective view of the cap opener 1. 2A and 2B are views for explaining the opener main body 10. Of these, FIG. 2A is a perspective view of the opener main body 10 as viewed obliquely from above, and FIG. It is the perspective view seen from diagonally downward. 3A to 3E are views for explaining the opener main body 10. Among these, (A) is a front view, (B) is a plan view, (C) is a bottom view, and (D) is a view. (A) is a view taken in the direction of arrows AA in (A), (E) is a view taken in the direction of arrows BB in (B). In the following description, the vertical direction indicated by the arrow in FIG. 1 is described as corresponding to the top and bottom of the entire cap opener 1, the opener body 10, the elastic member 20, and the lid member 30.
As shown in FIG. 1, the cap opener 1 includes an opener body 10, an elastic member 20, and a lid member 30.

  2 and 3, the opener body 10 is formed in the inner cylinder portion 11, the outer cylinder portion 12, the elastic member storage chamber 13 formed therebetween, and the inner cylinder portion 11. And a window portion 14.

  The inner cylinder portion 11 is formed in a substantially cylindrical shape with the central axis C as a reference. The inner peripheral surface 11a of the inner cylinder part 11 is formed in a taper shape in which the diameter on the upper end side is smaller than the diameter on the lower end side. By forming it in a tapered shape, it is possible to cope with a wide and flexible case even when the size or taper of the cap Ca (see FIGS. 5 and 6) of the PET bottle PB varies. In addition, the inner peripheral surface 11a is formed with unevenness in which convex shapes and concave shapes along the generatrix direction are alternately repeated in the circumferential direction. Thereby, the slip between the outer peripheral surfaces of the cap Ca can be suppressed. The upper end of the inner cylinder part 11 is closed by the top part 11b. The top portion 11b is formed in a square shape, and its four corners, that is, portions corresponding to the elastic member storage chamber 13 described later, are opened as elastic member mounting ports 13b.

  The outer cylinder portion 12 is formed in a rectangular tube shape that circumscribes the inner cylinder portion 11. In the example of illustration, it forms in the shape of a regular square cylinder. The outer cylinder part 12 has a corner 12a formed in a circular arc shape when viewed from above. The upper end 12b of the outer cylinder part 12 protrudes upward over the entire circumference by an amount corresponding to the plate thickness of the lid member 30 described later from the upper surface of the top part 11b. An elastic member storage chamber 13 is formed between the corner portion 12a of the outer tube portion 12 and the inner tube portion 11 described above.

  The elastic member storage chamber 13 has a pedestal 13a on the lower end side, and the upper end is opened, forming an elastic member mounting port 13b. From the upper surface of the pedestal 13a, a cylindrical mounting portion 13c projects from the lower side toward the upper side. The position of the upper end of the attachment portion 13c coincides with the position of the upper surface of the top portion 11b. A window portion 14 is formed in the elastic member storage chamber 13.

  The window part 14 is formed so as to penetrate the inner cylinder part 11, and communicates the elastic member storage chamber 13 with the inner side of the inner peripheral surface 11 a of the inner cylinder part 11. A part of the elastic member 20 described later protrudes from the window portion 14.

  The entire opener body 10 having the inner cylinder part 11, the outer cylinder part 12, the elastic member storage chamber 13, and the window part 14 described above is integrally formed of synthetic resin such as ABS resin.

  The elastic member 20 is held by the opener body 10. The elastic member 20 is formed in a cylindrical shape corresponding to the attachment portion 13c. The elastic member 20 is stored in the elastic member storage chamber 13 in a state where the elastic member 20 is fitted to the outer peripheral surface of the mounting portion 13c. At this time, the lower end of the elastic member 20 abuts on the pedestal 13a, and the upper end thereof substantially coincides with the upper end of the mounting portion 13c. Further, a part of the outer peripheral surface of the elastic member 20 is in contact with the inner surface of the corner portion 12a of the outer cylindrical portion 12, and the portion of the outer peripheral surface located on the side opposite to the contact portion is the window portion 14. It protrudes to the inner side of the inner peripheral surface 11a of the inner cylinder part 11 via. When the cap opener 1 is used, the protruding portion of the elastic member 20 bites into the knurled processed portion of the outer peripheral surface when the inner peripheral surface 11a of the inner cylindrical portion 11 is mounted on the outer peripheral surface of the cap Ca of the plastic bottle PB. When the cap opener 1 is rotated, the cap opener 1 is effectively prevented from sliding with respect to the cap Ca. The elastic member 20 is made of, for example, silicone rubber.

In the illustrated example, the elastic member 20 is provided in each of the four elastic member storage chambers 13 of the opener body 10, but is not limited thereto, and may be, for example, two or one. Good.
4A to 4C are diagrams for explaining the lid member 30, in which (A) is a front view, (B) is a plan view, and (C) is an enlarged view of an F portion in (A). It is.

  The lid member 30 is formed of a square plate member with rounded corners. The lid member 30 is formed in substantially the same shape as the inner peripheral surface of the upper end 12b of the outer cylinder portion 21. Further, the thickness of the lid member 30 is set to be substantially the same as the protruding height from the top portion 11b at the upper end 12b. Accordingly, the lid member 30 is configured to fit just inside the upper end 12b.

Further, an engaging convex portion 32 protrudes outwardly from the center of each of the four side surfaces 31 of the lid member 30 in the longitudinal direction. On the other hand, an engagement recess 12c (see FIG. 2A) corresponding to the engagement protrusion 32 is formed on the inner peripheral surface of the upper end 12b of the outer cylinder portion 12. The lid member 30 is attached to the opener main body 10 as a so-called fitting kill that cannot be removed by fitting the engaging convex portion 32 to the engaging concave portion 12c. The mounted lid member 30 closes the elastic member mounting ports 13b of the four elastic member storage chambers 13 to prevent the elastic member 20 from dropping off unnecessarily. The lid member 30 is printed with a photo or design on its upper surface 30a, or a design sticker 40, which will be described later, is attached to the Tao center to make use of it for advertising to companies, etc. can do.
A usage example of the cap opener 1 will be described with reference to FIGS.

  Here, FIG. 5A is a front view for explaining a state in which the cap opener 1 is attached to the cylindrical cap Ca of the plastic bottle PB, and FIG. 5B is a view taken along line DD in FIG. It is. 6A is a front view illustrating a state in which the cap opener 1 is attached to the PB tapered cap Ca of the PET bottle, and FIG. 6B is a view taken along the line EE in FIG. is there.

As shown in FIGS. 5 and 6, the cap opener 1 has a variation in the diameter of the cap Ca of the plastic bottle PB because the inner peripheral surface 11 a of the inner cylinder portion 11 is tapered as described above. Even when the outer peripheral surface of the cap Ca is formed in a tapered shape, a part of the elastic member 20 is engaged with the knurled processed portion of the cap Ca by engaging with the outer peripheral surface of the cap Ca. Can be bitten. For this reason, when turning the cap opener 1 to open the cap Ca, it is possible to solve the problem that the cap Ca cannot be opened due to slippage between the cap opener 1 and the cap Ca.
The actions and effects of the cap opener 1 described above are summarized below.

  The cap opener 1 includes an elastic member 20 housed in an elastic member housing chamber 13 between the corner portion 12a of the outer tube portion 12 having a rectangular tube shape and the cylindrical inner tube portion 11, and a part of the cap opener 1 is a window portion. 14 is protruded inward from the inner peripheral surface 11 a of the inner cylinder portion 11. For this reason, if the inner peripheral surface 11a of the inner cylinder part 11 is engaged with the outer peripheral surface of the cap Ca of the PET bottle PB, the elastic member 20 is compressed and bites into the knurled processed part of the cap Ca. As a result, when the cap opener 1 is attached to the cap Ca and rotated, the cap Ca is securely rotated without causing a slip between the outer peripheral surface of the cap Ca and the inner peripheral surface 11a of the cap opener 1. Can be opened.

  Further, since the cap opener 1 is formed so that the corner 12a of the outer cylinder 12 protrudes outward from the inner cylinder 11, when removing the cap Ca, the cap opener is hung with a finger on the corner 12a. By rotating 1, the cap Ca can be reliably rotated without sliding with a small force compared to the case where the cap Ca is directly rotated by hand.

  Further, as described above, the cap opener 1 can be accommodated in such a size that the corner portion 12a of the outer cylinder portion 12 protrudes from the inner cylinder portion 11, so that the whole can be configured compactly. . For this reason, even if it is still attached to the cap Ca of the plastic bottle PB, it does not get in the way. Thereby, every time the cap Ca is opened, it is possible to omit the troublesome work of mounting the cap Ca on each time.

  -Since the inner peripheral surface 11a of the inner cylinder part 11 is formed in the taper shape where the diameter of an upper end side is smaller than the diameter of a lower end side, even if the size and taper of the cap Ca have variation, the cap opener 1 , Can respond flexibly to these.

  -Since the cap opener 1 is uneven | corrugated in the inner peripheral surface 11a of the inner cylinder part 11 engaged with the outer peripheral surface of the cap Ca, it is an elastic member as mentioned above with respect to the knurled process part of the cap Ca. In addition to the bite 20, the irregularities engage the knurled processed portion. Thereby, the slip between the cap Ca and the cap opener 1 can be prevented more reliably.

  -Since the elastic member 20 is formed in a rod shape, the cap opener 1 is preferably stored in a vertically long elastic member storage chamber 13 formed between the inner cylinder portion 11 and the corner portion 12a of the outer cylinder portion 12. be able to.

  When the elastic member 20 is formed in a cylindrical shape, the cap opener 1 is mounted on the columnar mounting portion 13c of the elastic member storage chamber 13 through the elastic member mounting port 13b. Unnecessary movement can be suppressed. After mounting, since the reaction force when the elastic member 20 bites into the knurled portion of the cap Ca can be firmly received by the mounting portion 13c, excessive deformation and unnecessary movement of the elastic member 20 can be prevented. Slip between the cap Ca and the cap opener 1 can be more reliably prevented.

  The cap opener 1 can prevent unnecessary dropping of the elastic member 20 because the lid member 30 can close the elastic member mounting port 13b. Moreover, if a photograph, a design, etc. are given to the upper surface 30a of the lid | cover member 30, the cosmetics of the cap opener 1 can be improved or it can use for advertisements, such as a company.

  -Since the outer cylinder part 12 is formed in the round regular square cylinder shape of the corner | angular part 12a, the cap opener 1 has an appropriate size between the corner | angular part 12a of the outer cylinder part 12, and the inner cylinder part 11. The elastic member storage chamber 13 can be secured. Further, when the cap opener 1 is turned, the corner 12a is caught by the hand, so that it is difficult to slip and force is easily applied.

  In the above-described embodiment, the case where the outer cylinder portion 12 is a regular quadrangular tubular shape has been described as an example, but the present invention is not limited to this, and for example, a regular triangular tubular shape, a regular pentagonal tubular shape, a regular hexagonal tubular shape, a regular octagonal shape A cylindrical shape etc. may be sufficient. That is, it may be a regular polygonal cylinder. However, from the viewpoint that the elastic member storage chamber 13 is made large and a relatively large elastic member 20 is stored, and that a finger or the like is easily caught when the elastic member storage chamber 13 is rotated by being engaged with the cap Ca, a regular triangular cylindrical shape is used. A regular square tube or the like is preferable. Furthermore, when these two are compared, the regular square tube shape can be configured more compactly than the regular triangle tube shape.

  In the above-described embodiment, the example in which the attachment portion 13c is provided in the elastic member storage chamber 13 and the cylindrical elastic member 20 is attached to the attachment portion 13c has been described. Instead of this, the attaching portion 13c may be omitted, and a rod-like elastic member such as a columnar shape or a prismatic shape may be housed in the elastic member housing chamber 13.

FIG. 7A is a diagram illustrating an example in which the design sticker 40 is attached to the lid member 30, and FIG. 7B is a diagram illustrating the design stickers 40 having different designs D1 to D5.
The illustrated design sticker 40 includes a design printing unit 41 and a barcode printing unit 42, and a break line 43 such as a perforation is provided between them.

  The design printing part 41 is formed in the same shape as the lid member 30 or slightly larger than this and the same shape as the upper end of the outer cylinder part 12 of the opener body 10. In the design printing unit 41, photographs and various designs D1 to D5 are printed. The design printing unit 41 is coated with an adhesive (not shown) that can be repeatedly peeled and stuck on the back surface thereof, and is stuck to the surface of the lid member 30 via the adhesive. For this reason, when using the cap opener 1, for example, the user may use the state in which the barcode printing unit 42 is cut off from the break line 43 and only the design printing unit 41 is attached to the lid member 30. Of course, in addition to this, only the design printing section 41 can be peeled off, and this can be pasted on a form phone or a notebook for enjoyment.

  The bar code printing unit 42 may appropriately print information necessary for practical use in addition to the bar code 42a used for management of manufacture and sales of the cap opener 1 and the like. The barcode printing unit 42 is coated with an adhesive that can be repeatedly peeled and adhered, as described above, and the barcode printing unit 42 is bent in the vicinity of the breaking line 43 to form an outer cylinder. It may be attached to the side surface of the portion 12 or the adhesive may not be applied and may be positioned on the same plane as the design printing portion 41 as shown in FIG.

DESCRIPTION OF SYMBOLS 1 Cap opener 10 Opener main body 11 Inner cylinder part 11a Inner peripheral surface 12 Outer cylinder part 12a Corner | angular part 13 Elastic member storage chamber 13b Elastic member attachment port 13c Mounting part 14 Window part 20 Elastic member 30 Lid member 40 Design sticker 41 Design printing part 42 Barcode printing part 43 Break line Ca cap PB PET bottle

Claims (7)

An opener body mounted on the cap, and an elastic member having elasticity held by the opener body,
The opener body is
A cylindrical inner tube portion formed with an inner peripheral surface engaged with an outer peripheral surface of the cap, a rectangular tube outer tube portion circumscribing the inner tube portion, a corner portion of the outer tube portion, and the An elastic member storage chamber formed between the inner cylinder portion and a window portion formed in the inner cylinder portion for communicating the elastic member storage chamber and the inner peripheral surface of the inner cylinder portion. And
The elastic member is stored in the elastic member storage chamber, and a part of the elastic member protrudes inward from the inner peripheral surface of the inner cylinder portion through the window portion.
Cap opener characterized by that. The inner peripheral surface of the inner cylinder part is formed in a tapered shape having a lower end side diameter smaller than a lower end side diameter,
The cap opener according to claim 1. In the opener body, the inner peripheral surface of the inner cylindrical portion is formed with a convex and concave shape in which convex shapes and concave shapes along the generatrix direction are alternately repeated in the circumferential direction.
The cap opener according to claim 1 or 2, characterized in that. The elastic member is formed in a rod shape,
The cap opener according to any one of claims 1 to 3, wherein: The elastic member storage chamber has a cylindrical mounting portion extending from the lower side toward the upper side, and the elastic member mounting port is opened at the upper end.
The elastic member is formed in a cylindrical shape and is mounted on the attachment portion via the elastic member mounting port.
The cap opener according to claim 4. A lid member for closing the elastic member mounting port;
The cap opener according to claim 5. The outer cylinder part is formed in a regular square cylinder shape with round corners,
The cap opener according to any one of claims 1 to 6, wherein the cap opener is provided.