Cap opening / closing tool

Abstract

To provide a cap opening / closing tool that is less likely to be forgotten, can prevent damage by suppressing wrong usage, and can increase a degree of freedom in design.SOLUTION: The tool comprises an annular member 100, a storage member 200 and a hinge part 300 that connects the annular member 100 and the storage member 200. The annular member 100 is disposed in a position different from the hinge part 300 in a circumferential direction, and includes: a handle part 140 that engages with the storage member 200 relative to a rotation direction that opens / closes the cap; and a protrusion part 112 acting as a reverse insertion inhibition part that inhibits fitting of the cap to an insertion hole 110 from a portable article side towards an opposite side when the annular member 100 is stored in a second opening part 210.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap opener / closer for opening and closing a cap of a container. [Background technology]

[0002] There are known cap openers that allow even elderly people and others with weak grip strength to easily open and close the caps of containers such as plastic bottles. Generally, such cap openers are not considered necessities, and they are easily forgotten when going out, which can lead to difficulties in opening the caps of containers when out and about. Therefore, the applicant of the present application has provided technology relating to a cap opener that can be attached to a portable item such as a smartphone to reduce the likelihood of forgetting to carry it (see Patent Document 1).

[0003] This technology will be briefly described with reference to Figures 10 and 11. Figure 10 is a perspective view of a conventional cap opener / closer. Figure 11 is a partial schematic cross-sectional view showing a state in which the conventional cap opener / closer is fitted to a cap. The illustrated cap opener / closer 10P includes an annular member 100P having a through-hole (first opening) 110P that can be fitted to the cap and engages in the rotational direction for opening and closing the cap, a storage member 200P that can store the annular member 100P, and a hinge portion 300P. This cap opener / closer 10P is used by attaching the underside of the storage member 200P in Figure 10 to a portable item 600.

[0004] The outer peripheral surface 120P of the annular member 100P is configured in a polygonal shape, and the inner peripheral surface 210P of the storage member 200P is also configured in a polygonal shape. As a result, when the storage member 200P rotates while the annular member 100P is stored in it, the inner peripheral surface 210P and the outer peripheral surface 120P engage in the rotational direction, and a rotational force acts on the annular member 100P. Furthermore, in this technology, the handle portion 140P provided on the annular member 100P is configured to also engage with the side surface of the groove portion 240P provided in the storage member 200P, and the rotational force is also transmitted from this portion.

[0005] The operation of opening and closing the cap 720 using the cap opener / closer 10P configured as described above will be described with reference to Fig. 11. First, as shown in Fig. 11(a), with the annular member 100P stored in the storage member 200P, the cap 720 is inserted into the through-hole 110P. This causes the knurled portion provided on the inner circumferential surface of the through-hole 110P to mesh with the knurled portion 721 provided on the outer circumferential surface of the cap 720. In this state, by rotating the portable item 600, a rotational force is transmitted from the storage member 200P to the annular member 100P, and the cap 720 can be opened or closed.

[0006] In the case of this cap opening / closing device 10P, even when the annular member 100P is rotated 180 degrees from the state in which it is stored in the storage member 200P, the cap 720 can be inserted into the through-hole 110P without interfering with the portable item 600 (see FIG. 11(b)). Even in this state, by rotating the portable item 600, a rotational force is transmitted from the storage member 200P to the annular member 100P, and the cap 720 can be opened or closed.

[0007] However, in this case, the rotational force is transmitted from the housing member 200P to the annular member 100P only through the hinge portion 300P, causing stress to concentrate on the hinge portion 300P. This may cause damage to the hinge portion 300P depending on the materials and structures of the various members. Alternatively, design freedom may be reduced because it becomes necessary to consider the materials and structures of the various members in order to prevent damage to the hinge portion 300P.

[0008] The direction in which the cap 720 is inserted into the through-hole 110P is opposite to that in FIG. 11(a) and FIG. 11(b). [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 2023-96452 Summary of the Invention [Problem to be solved by the invention]

[0010] The object of the present invention is to provide a cap opener / closer that can reduce the risk of forgetting to carry it and prevent incorrect use, thereby preventing damage and increasing design freedom. [Means for solving the problem]

[0011] The present invention employs the following means to solve the above problems.

[0012] That is, the cap opening / closing device of the present invention is an annular portion having a first opening that can be fitted to a cap of a container and can be engaged in a rotational direction to open and close the cap; a storage section having a second opening capable of storing the annular section and attached to a portable item; a connecting portion that connects the annular portion and the storage portion while enabling the annular portion to be stored in the second opening and to be spaced apart from the second opening; and Equipped with The annular portion is an engaging portion that is provided at a position different from the connecting portion in a circumferential direction and engages with the storage portion in the rotational direction; a reverse insertion prevention portion that prevents the cap from being fitted into the first opening from the side of the portable item toward the opposite side when the annular portion is housed in the second opening; The present invention is characterized by comprising:

[0013] According to the present invention, the storage section is attached to the portable item, thereby attaching the cap opener to the portable item. This reduces the likelihood of forgetting to carry the cap opener. Furthermore, since the annular section is connected to the storage section by the connecting section, by hooking a finger on the first opening of the annular section, the portable item can be prevented from falling when held in the hand. Furthermore, by providing an engaging section, stress acting on the connecting section when opening and closing the cap can be reduced. Furthermore, when opening and closing the cap, force can be applied to the portable item while gripping it, making it easier to transmit rotational force from the hand to the cap. Furthermore, by providing a reverse insertion prevention section, it is possible to prevent the cap from being opened or closed without storing the annular section in the storage section. In other words, incorrect use can be reduced.

[0014] The reverse insertion prevention portion may be formed by at least one protrusion that protrudes toward the center of the first opening at the end of the first opening that faces the portable item.

[0015] According to this configuration, when the annular portion is not stored in the second opening and an attempt is made to insert the cap into the first opening from the side of the portable item at the first opening (the side of the portable item when the annular portion is stored in the second opening), the protruding portion hits the cap, thereby preventing reverse insertion.

[0016] The protrusion may be provided on the inner circumferential surface of the first opening within a range of 180° on the connecting portion side with respect to the center of the opening.

[0017] This makes it possible to prevent the protruding portion from coming into contact with the finger when the finger is placed on the first opening.

[0018] A portion between the inner circumferential surface of the first opening and the end surface on the portable item side where the protrusion is not provided may be provided with a conical chamfered portion.

[0019] This makes it easier for the conical chamfered portion to come into contact with the finger when the finger is placed on the first opening, thereby increasing the contact area between the finger and the chamfered portion and reducing the strain on the finger.

[0020] the annular portion has at least one handle portion, and the storage portion has at least one groove portion that stores a portion of each of the at least one handle portion excluding a part of a tip end thereof; The at least one handle portion may be the engagement portion.

[0021] The above configurations may be combined as much as possible. [Effects of the Invention]

[0022] As described above, according to the present invention, it is possible to reduce the likelihood of forgetting to carry the cap opener and closeer, and to prevent incorrect use, thereby preventing damage to the cap opener and closeer and increasing the degree of freedom in design. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is an external view of a cap opener according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a schematic diagram of an annular member according to the first embodiment of the present invention. [Figure 3] FIG. 3 is a schematic view of a storage member according to the first embodiment of the present invention. [Figure 4] FIG. 4 is an external view showing an example of use of the cap opener according to the first embodiment of the present invention. [Figure 5] FIG. 5 is a schematic view showing a state in which the cap opener according to the first embodiment of the present invention is fitted to the cap. [Figure 6] FIG. 6 is a schematic view showing a state in which the cap opener according to the first embodiment of the present invention is erroneously fitted to the cap. [Figure 7] FIG. 7 is a diagram showing an example of the shape of the annular portion according to the first embodiment of the present invention. [Figure 8]FIG. 8 is a plan view of a cap opener according to a second embodiment of the present invention. [Figure 9] FIG. 9 is a schematic view showing a storage section according to a third embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view of a conventional cap opener. [Figure 11] FIG. 11 is a partial schematic cross-sectional view showing a state in which a conventional cap opener / closer is fitted to a cap. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following detailed description of the present invention will be given by way of example with reference to the accompanying drawings, although the dimensions, materials, shapes, relative positions, etc. of the components described in the examples are not intended to limit the scope of the present invention unless otherwise specified.

[0025] Example 1 A cap opener according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is an external view of a cap opener / closer according to a first embodiment of the present invention, where (a) is a plan view and (b) is a bottom view. FIG. 2 is a schematic view of an annular member according to the first embodiment of the present invention, where (a) is a plan view and (b) is a schematic cross-sectional view (a cross-sectional view taken along the line AA in (a)). Note that FIG. 2(b) also shows an enlarged view of the cross section. FIG. 3 is a schematic view of a storage member according to the first embodiment of the present invention, where (a) is a plan view and (b) is a side view (view from the right side in (a)). FIG. 4 is an external view showing an example of use of the cap opener / closer according to the first embodiment of the present invention, where (a) shows a portion of the state in use when opening and closing the cap, and (b) shows a portion of the state in which a portable item is placed in a container. FIG. 5 is a schematic view showing how the cap opener / closer according to the first embodiment of the present invention is fitted to a cap, where the configuration of each component is shown in a schematic cross-sectional view. FIG. 6 is a schematic view showing how the cap opener / closer according to the first embodiment of the present invention is erroneously fitted to a cap, where the configuration of each component is shown in a schematic cross-sectional view. FIG. 7 is a diagram showing an example of the shape of the annular member according to the first embodiment of the present invention.

[0026] <Cap opening and closing device configuration> The cap opener 10 according to this embodiment includes an annular member 100 as an annular portion, a storage member 200 as a storage portion, and a hinge portion 300 as a connecting portion connecting the annular member 100 and the storage member 200. The annular member 100 and the storage member 200 can be preferably made of metal or a hard resin material (such as high-density polyethylene, polypropylene, or polycarbonate).

[0027] The annular member 100 is provided with a through hole 110 as a first opening that can be fitted into a cap 720 attached to a container body 710 of the container 700 and can engage in a rotational direction that opens and closes the cap 720. In this embodiment, the inner circumferential surface of the through hole 110 is configured as a substantially cylindrical surface. The inner circumferential surface of the through hole 110 is provided with a plurality of knurled portions 111 that can engage in a rotational direction that opens and closes the cap 720 with a plurality of knurled portions 721 formed circumferentially on the outer circumferential surface of the cap. The outer circumferential surface 120 of the annular member 100 is also configured as a cylindrical surface, except for a portion where a protrusion 130 and a handle portion 140 (described later) are provided.

[0028] The storage member 200 is provided with a second opening 210 capable of storing the annular member 100. The bottom surface (the lower surface in FIG. 3(b)) of this storage member 200 is attached to the portable item 600. In this way, the cap opener / closer 10 is attached to the portable item 600. Various known techniques can be applied to attach the storage member 200 to the portable item 600. For example, an attachment method using adhesive or double-sided tape can be adopted. An adhesive or the like can be applied to the bottom surface of the storage member 200 in advance, or the storage member 200 can be attached using adhesive or double-sided tape separately. Also, an adhesive method that is intended to be permanently attached to the portable item 600 once, or an adhesive (sticking) method that is intended to be repeatedly attached and peeled, can be adopted. The inner peripheral surface (second opening 210) and the outer peripheral surface 220 of the storage member 200 are cylindrical except for the portions separated by a pair of clamping portions 230, which will be described later.

[0029] The annular member 100 is provided with a protrusion 130, and the storage member 200 is provided with a pair of clamping portions 230 that are provided to sandwich the protrusion 130 from both sides. The protrusion 130 and the pair of clamping portions 230 are provided with shaft holes 131 and 232 that communicate with each other. A shaft member 310 is provided to be inserted into these shaft holes 131 and 232. It is desirable to use a hard material such as metal for the shaft member 310. The protrusion 130 having the shaft hole 131, the pair of clamping portions 230 having the shaft hole 232, and the shaft member 310 form a hinge portion 300. This allows the annular member 100 to rotate relative to the storage member 200 around the central axis of the shaft member 310. Therefore, the state in which the annular member 100 is stored in the second opening 210 and the state in which the annular member 100 is removed from the second opening 210 can be easily changed. It is possible to take a state where 0 is spaced apart.

[0030] In this embodiment, the shaft member 310 is the shaft portion of a bolt. As shown in Fig. 3(b), a pair of clamping portions 230 in the storage member 200 are each provided with a recess 231. The head and nut of a bolt are configured to fit into these recesses 231, and by fastening the bolt and the nut together by screwing them together, the shaft portion of the bolt (shaft member 310) can be inserted into the shaft holes 131, 232.

[0031] Furthermore, the annular member 100 according to this embodiment is provided with a single handle portion 140 as an engaging portion, and the storage member 200 is provided with a groove portion 240 that accommodates the portion of the handle portion 140 excluding a portion of the tip. The handle portion 140 is configured to be engageable with the side surface of the groove portion 240. In other words, when a rotational force that opens or closes the cap 720 acts on at least one of the annular member 100 and the storage member 200, the handle portion 140 engages with the side surface of the groove portion 240. In this way, the annular member 100 is provided with the handle portion 140 as an engaging portion at a circumferentially different position from the hinge portion 300 as a connecting portion.

[0032] The annular member 100 according to this embodiment is provided with a protrusion 112 as a reverse insertion prevention portion that prevents the cap 720 from fitting into the through-hole 110, extending from the portable device 600 side toward the opposite side when the annular member 100 is housed in the second opening 210. The "portable device 600 side when the annular member 100 is housed in the second opening 210" is the lower side in FIG. 2(b). Therefore, the protrusion 112 provided on the annular member 100 can prevent the cap 720 from fitting into the through-hole 110 from the lower side toward the upper side in FIG. 2(b). As is clear from FIG. 2(b), the protrusion 112 is configured to protrude toward the center of the through-hole 110 at the end of the through-hole 110 on the portable device 600 side (the lower end in the figure). In this embodiment, the protrusion 112 is provided on the inner circumferential surface of the through-hole 110 within a range of 180° on the hinge unit 300 side with respect to the center of the opening.

[0033] Furthermore, in the annular member 100 according to this embodiment, a conical chamfered portion 113 is provided in a portion between the inner circumferential surface of the through hole 110 and both end faces, where no protrusion 112 is provided. That is, a conical chamfered portion 113 is provided in a portion between the inner circumferential surface of the through hole 110 and the end face on the side of the portable item 600 (the lower side in FIG. 2(b)), where no protrusion 112 is provided. Chamfers (so-called R-surfaces) with a cross section that forms a curved line are also provided at both end portions of this conical chamfered portion 113 (see the enlarged view of the chamfered portion 113 in the circled portion in FIG. 2(b)). Furthermore, a chamfer (so-called R-surface) 114 with a cross section that forms a curved line is provided over the entire circumference between the inner circumferential surface of the through hole 110 and the end face on the opposite side to the portable item 600 (see the enlarged view of the chamfered portion 114 in the circled portion in FIG. 2(b)). If the radius of curvature of chamfered portion 114 is increased or if the chamfer is made into a conical surface like chamfered portion 113, the distance from the end of through-hole 110 on the side where cap 720 is inserted to the position where knurled portion 111 is provided will become longer. This will shorten the length of engagement between knurled portion 111 and knurled portion 721, so it is desirable to make chamfered portion 114 an R surface with a small radius of curvature.

[0034] <Advantages of the cap opener according to this embodiment> The cap opener / closer 10 according to this embodiment is attached to a portable item 600, which reduces the likelihood of forgetting to carry the cap opener / closer 10. In other words, by attaching the cap opener / closer 10 to a portable item 600 that the user carries with them at all times, the likelihood of forgetting to carry the cap opener / closer 10 can be reduced. Specific examples of the portable item 600 include smartphones, mobile phones, portable game consoles, hand mirrors, compact mirrors, card cases, and remote controls for televisions and air conditioners. In addition, the cap opener / closer 10 can be attached to the case of a smartphone or the like. It is also preferable to install 10.

[0035] Furthermore, the annular member 100 is connected to the storage member 200 by a hinge portion 300, which is a connecting portion. Therefore, by hooking a finger on the through hole 110 in the annular member 100, it is possible to prevent the portable item 600 from falling when the portable item 600 is held in the hand. This allows the cap opener 10 to function as a smartphone ring, for example, when the portable item 600 is a smartphone. In this embodiment, a conical chamfered portion 113 is provided in a portion between the inner circumferential surface and both end surfaces of the through hole 110 where the protrusion 112 is not provided. This makes it easier for the conical chamfered portion 113 to come into contact with the finger. In this case, the contact area between the finger and the chamfered portion 113 can be increased, thereby reducing strain on the finger. Note that even if the area between the inner peripheral surface of through-hole 110 and the end face opposite to the portable item 600 side is configured with chamfered portion 114 configured with an R-surface having a small radius of curvature, there is no particular problem because fingers are unlikely to come into contact with chamfered portion 114 when used as a smartphone ring. Also, by hanging through-hole 110 on a hook or the like, portable item 600 can be hung on a wall or the like.

[0036] When using the cap opener / closer 10 according to this embodiment to open and close the cap 720 of a container 700, such as a plastic bottle, the cap 720 can be opened and closed conveniently with the annular member 100 housed in the second opening 210. FIG. 4( a) shows the state in which the cap 720 is opened and closed. In the illustrated state, the cap 720 can be opened and closed by holding the container body 710 of the container 700 in one hand and rotating the portable item 600 with the other hand. Therefore, rotational force applied by the hand can be efficiently transmitted to the cap 720, making it easy to open and close the cap 720. As described above, the handle portion 140 engages with the side surface of the groove portion 240 in the rotational direction that opens and closes the cap 720. Therefore, stress acting on the hinge portion 300 can be reduced when opening and closing the cap 720.

[0037] In addition, in this embodiment, since the handle portion 140 is provided, the operation of storing the annular member 100 in the storage member 200 and the operation of separating the annular member 100 from the storage member 200 can be easily performed.

[0038] Furthermore, it is also preferable that the annular member 100 and the storage member 200 can be held in any positional relationship when the storage member 200 is attached to a portable item 600 having a predetermined weight or less and the annular member 100 is fitted into the cap 720 of a container 700 placed on a horizontal installation surface. More specifically, it is preferable to set the friction force generated between the outer peripheral surface of the shaft member 310 and the inner peripheral surfaces of the shaft holes 131, 232 provided in the annular member 100 and the storage member 200 relatively high within a range that does not hinder the rotation of the annular member 100 relative to the storage member 200.

[0039] By adopting the above configuration, the portable item 600 can be attached to the container 700, and the orientation of the portable item 600 relative to the container 700 can be maintained in a desired state. FIG. 4(b) shows the portable item 600 placed in the container 700 and held at a predetermined tilt angle. For example, if the portable item 600 is a smartphone, its maximum weight is approximately 300 g. Therefore, by setting the above-mentioned "predetermined weight" to 300 g and the above-mentioned frictional force, it is possible to place the smartphone on the container 700 at a desired tilt. In other words, the container 700 can be used as a smartphone stand. Of course, the container 700 can also be used as a stand if the portable item 600 is a portable game console, a hand mirror, or the like. Needless to say, by setting the above-mentioned frictional force as described above, the portable item 600 can be placed directly on a surface such as a table at a desired tilt.

[0040] Furthermore, in this embodiment, the annular member 100 is provided with the protrusion 112 as a reverse insertion prevention portion, which prevents the cap 720 from being opened or closed when the annular member 100 is not stored in the storage member 200. In other words, incorrect use can be prevented. This prevents stress from concentrating on the hinge portion 300 due to incorrect use. This point will be described with reference to FIGS. 5 and 6.

[0041] When the annular member 100 is stored in the storage member 200, the cap 720 can be inserted into the through-hole 110 in the annular member 100, as shown by the arrow in Fig. 5, and the cap opener / closer 10 can be fitted to the cap 720. As shown in the enlarged cross-sectional view in the figure, in this embodiment, the protrusion 112 is configured to be located to the side of the chamfered portion 722 that is normally provided between the top and side surfaces of a typical cap 720 when the cap opener / closer 10 is fitted to the cap 720. By adopting such a configuration, the thickness of the cap opener / closer 10 can be minimized.

[0042] When the annular member 100 is rotated 180° from the state in which it is stored in the storage member 200, it is expected that a user will mistakenly believe that the cap 720 can be inserted into the through-hole 110 without interfering with the portable item 600. However, as shown by the arrow in FIG. 6 , even if an attempt is made to insert the cap 720 into the through-hole 110 in this state, the protrusion 112 abuts against the chamfered portion 722 of the cap 720 (see the enlarged cross-sectional view), preventing insertion. This makes it possible to inform the user that the cap opener / closer 10 cannot be fitted to the cap 720 when the annular member 100 is not stored in the storage member 200. This prevents incorrect use and therefore prevents damage to the cap opener / closer 10. Furthermore, the freedom of choice for the materials and structures of various components is not limited in order to prevent damage, thereby increasing the freedom of design.

[0043] (Modification of the annular portion and the storage portion) The annular portion and the storage portion are not limited to the configurations shown in the above embodiments, and various configurations can be adopted. In the above embodiments, the annular portion (annular member) and the storage portion (storage member) are shown as separate components. However, a configuration in which the annular portion and the storage portion are integrally formed by a hinge portion can also be adopted. In this case, the shaft member is unnecessary, and the annular portion, the storage portion, and the hinge portion can be integrally molded. Furthermore, while the above embodiments show a configuration in which a single handle portion 140 and groove portion 240 are provided, a configuration in which multiple handle portions and groove portions are provided can also be adopted. By adopting such a configuration, the handle portion and the groove portion engage at multiple points when opening and closing the cap 720, thereby further dispersing stress.

[0044] In the above embodiment, the protrusion 112 is provided on the inner circumferential surface of the through hole 110 within a 180° range on the hinge portion 300 side with respect to the center of the opening. The reason for adopting such a configuration is to prevent fingers from hitting the protrusion 112 when the cap opener / closer 10 is used as a smartphone ring. However, to prevent incorrect fitting, the position at which the protrusion 112 is provided is not limited. Therefore, a configuration in which the protrusion 112 is provided around the entire inner circumferential surface of the through hole 110 may also be adopted. Alternatively, a configuration in which the protrusions 112A and 112B are provided at intervals in multiple locations may also be adopted, as in the annular member 100A shown in FIG. 7(a) and the annular member 100B shown in FIG. 7(b). The former is configured such that protrusions 112A are provided at a position inside hinge portion 300 and at positions 90° on both sides thereof, for a total of three positions, while the latter is configured such that protrusions 112B are provided at a position inside hinge portion 300 and at positions 120° on both sides thereof, for a total of three positions. Of course, the number and arrangement of protrusions can be set as appropriate. The shape of the protrusions is not particularly limited, and for example, a configuration can be adopted in which protrusions 112C are provided in a shape that linearly connects both ends of an arc in plan view, as in annular member 100C shown in FIG. 7(c). Furthermore, in the above-described embodiment, as shown in Figures 7(d1) and 2, the protrusion 112 does not protrude from the bottom surface of the main body of the annular member 100, thereby minimizing the thickness of the cap opener / closer 10. However, the protrusion is not limited to such a configuration. For example, as in the annular member 100D shown in Figure 7(d2), a configuration may be adopted in which the protrusion 112D protrudes from the bottom surface of the main body of the annular member 100D.

[0045] Example 2 Figure 8 shows a second embodiment of the present invention. This embodiment shows a configuration in which the outer peripheral surface of the annular member and the inner peripheral surface of the housing member are also engaged. The other configurations and functions are the same as those of the first embodiment, so the same components are given the same reference numerals and their explanations will be omitted as appropriate.

[0046] The cap opener 10X according to this embodiment also includes an annular member 100X as an annular portion, a storage member 200X as a storage portion, and a hinge portion 300 as a connecting portion connecting the annular member 100X and the storage member 200X.

[0047] The annular member 100X according to this embodiment also includes a through hole 110X as a first opening, a protrusion 130, and a handle 140 as an engaging portion. The through hole 110X is provided with a plurality of knurled portions 111 and a protrusion 112 as a reverse insertion prevention portion. The storage member 200X is provided with a second opening 210X, a pair of clamping portions 230, and a groove 240.

[0048] The planar shape of the outer peripheral surface 120X of the accommodated portion of the annular member 100X (the portion of the annular member 100X excluding the protrusion 130 and the handle portion 140) accommodated in the second opening 210X is non-circular. More specifically, this planar shape is polygonal. Furthermore, the planar shape of the inner peripheral surface of the second opening 210X is similar to the planar shape of the outer peripheral surface of the accommodated portion. In other words, this planar shape is also polygonal. With the above configuration, the inner peripheral surface of the second opening 210X can engage with the outer peripheral surface of the annular member 100X (the outer peripheral surface of the accommodated portion) in the rotational direction that opens and closes the cap 720. That is, when a force in the rotational direction acts on at least one of the annular member 100X and the accommodation member 200X, one of the portions on both sides of a corner of the inner peripheral surface of the second opening 210X engages with a corner of the outer peripheral surface 120X of the accommodated portion. In this embodiment, eight corners are provided, and engagement occurs at multiple points.

[0049] The cap opener / closer 10X configured as described above can also achieve the same effects as those of the above-described Example 1. In addition, in the case of this example, when the cap is opened or closed, the inner peripheral surface of the second opening 210X and the outer peripheral surface of the annular member 100X engage with each other, which can further distribute stress.

[0050] In this embodiment, the planar shape of the outer peripheral surface 120X of the accommodated portion of the annular member 100X accommodated in the second opening 210X is similar to the planar shape of the inner peripheral surface of the second opening 210X. However, as long as the inner peripheral surface of the second opening 210X can engage with the outer peripheral surface of the annular member 100X (the outer peripheral surface of the accommodated portion) in the rotational direction that opens and closes the cap, the planar shapes do not need to be similar. Furthermore, in this embodiment, the planar shape of the outer peripheral surface 120X of the accommodated portion and the planar shape of the inner peripheral surface of the second opening 210X are polygonal, but various shapes may be used for the planar shape.

[0051] Example 3 FIG. 9 shows a third embodiment of the present invention. In this embodiment, the same as in the first embodiment is used. This shows a configuration in which a storage member is integrally provided in a smartphone case. FIG. 9(a) is a plan view of the smartphone case, and FIG. 9(b) is a cross-sectional view taken along line BB in FIG. 9(a). In this smartphone case 800, a storage section 200Y is integrally provided in a case main body 810. The configuration of the storage section 200Y itself is the same as that of the storage member 200 shown in Example 1, so a description thereof will be omitted. Note that this example differs from Example 1 in that the second opening does not penetrate in the front-to-back direction.

[0052] In the above configuration, by using an axial member to connect the annular member 100 shown in Example 1 to the storage section 200Y, a smartphone case can be obtained in which the cap opening / closing device 10 shown in Example 1 is integrally formed with the case main body 810. [Explanation of symbols]

[0053] 10,10X: Cap opener 100, 100A, 100B, 100C, 100D, 100X: Annular members 110, 110X: through hole (first opening) 111: Knurled part 112,112A,112B,112C,112D:Protrusion 113: Chamfered part 114: Chamfered part 120,120X: Outer surface 130:Protrusion 131: Shaft hole 140: Handle 200, 200X: Storage materials 200Y: Storage area 210, 210X: Second opening 220: Outer surface 230: Sandwiching part 231: Recess 232: Shaft hole 240: Groove 300: Hinge part 310: Shaft member 600: Personal belongings 700: Container 710: Container body 720: Cap 721: Naru Club 722: Chamfered part 800:Smartphone case 810: Case body

Claims

1. a ring-shaped portion having a first opening that can be fitted to a cap of a container and can be engaged in a rotational direction to open and close the cap; a storage section having a second opening capable of storing the annular section and attached to the portable item; a connecting portion that connects the annular portion and the storage portion while enabling the annular portion to be stored in the second opening and to be spaced apart from the second opening; and Equipped with The annular portion is an engaging portion that is provided at a position different from the connecting portion in a circumferential direction and engages with the storage portion in the rotational direction; a reverse insertion prevention portion configured to prevent the cap from being fitted into the first opening from the side of the portable item toward the opposite side when the annular portion is housed in the second opening; A cap opening / closing device comprising:

2. 2. The cap opener according to claim 1, wherein the reverse insertion prevention portion is formed by at least one protrusion that protrudes toward the center of the first opening at an end of the first opening that faces the portable item.

3. The cap opener according to claim 2, wherein the protrusion is provided on the inner circumferential surface of the first opening within a range of 180° on the connecting portion side with respect to the center of the opening.

4. The cap opening / closing device according to claim 2 or 3, characterized in that the portion between the inner surface of the first opening and the end face on the portable item side where the protrusion is not provided is provided with a conical chamfered portion.

5. the annular portion has at least one handle portion, and the storage portion has at least one groove portion that stores a portion of each of the at least one handle portion excluding a part of a tip end thereof; 2. The cap opener according to claim 1, wherein the at least one handle portion is the engagement portion.

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