TWM651140U - Cap components and beverage containers - Google Patents

Abstract

[Problem] Provide a cap assembly and a beverage container that can ensure the ease of drinking of the beverage while achieving compactness. [Solution] A cap assembly is installed on the mouth and neck of a container body with an upper opening, and the cap assembly is provided with: a cap body having a liquid flow port communicating with the inside of the container body; and an annular member disposed on the the upper side of the cap body; and a cover covering the liquid flow port. The cap body has a mouth forming member for providing the liquid flow port, and the mouth forming member has a peripheral wall portion that is cylindrical and stands upward from a bottom wall portion on which the liquid flow port is formed. The front end portion of the peripheral wall portion protrudes upward more than the other portions. The cover has a concave or groove-shaped storage recess recessed from a top wall of the cover. In the storage state of the annular member, at least a part of the annular member is stored in the storage recess; in this storage state, the lower surface of the annular member is opposite to the top wall of the cover. . The annular member has an annular front end portion located at the frontmost side when the annular member is in a stored state, the storage recess has a front end setting portion for the annular front end portion, and the front end portion of the peripheral wall portion is connected to the front end portion of the peripheral wall portion. The front end installation parts are arranged side by side in the front and rear direction.

Description

Cap components and beverage containers

The invention relates to a cap assembly and a beverage container.

In the past, there has been known a cap assembly that serves as a plug body and can be detachably mounted on the mouth and neck of a container body with an upper opening through screwing. The cap assembly has an annular ring member (a part of the handle) that can be hooked on the hand or the like, and can be rotatably attached via a hinge (for example, refer to Patent Document 1). In addition, a design has been disclosed in which an annular member can be erected in a fixed (integrated) state on the cover body of the cap assembly (see, for example, Non-Patent Document 1). With such an annular member, the beverage container can be carried without holding the container body by passing the annular member through the fingers or hanging the annular member on a buckle.

[Patent Document] Patent document 1: Japanese Patent Application Publication No. 2020-83331

[Non-patent literature] "[News Release] Tiger Customized Bottle New Series MCZ Model to be Released on July 6, 2021 (Tuesday)", [online], July 6, 2021, Tiger Thermos Bottle Co., Ltd., [July 6, 2021 Inspection Office], website <URL: https://www.tiger.jp/news/press_release/pr_210706_01.html>"

[The problem that the creation wants to solve] As in Non-Patent Document 1, when the ring-shaped member is fixed to the lid and raised upward, the vertical size becomes larger, which may cause inconvenience if the beverage container is carried in a bag. . In this regard, as described in Patent Document 1, if the ring-shaped member can freely rotate around the hinge, the ring-shaped member can be brought into a folded state (storage state), thereby suppressing an increase in the size in the vertical direction. , thus making it easier to achieve compactness and improve convenience.

However, there is still room for improvement in terms of suppressing or reducing the protrusion size of the annular member in the stored state from the upper side of the cap assembly while ensuring the strength of the annular member. In addition, there is room for improvement in suppressing the influence of the annular member on the design of the cap assembly.

This invention is designed based on the above situation, and its purpose is to provide a cap assembly and a beverage container that allow the ring-shaped member to freely rotate around the hinge to improve convenience, and at the same time suppress and reduce the ring in the stored state. The size of the shaped member protruding from the upper side of the cap assembly.

[Means used to solve problems] [Aspect 1 of this creation] A cap assembly that can be installed on the mouth and neck of a container body with an opening on the upper part. The cap assembly includes: The cap body is used to block the upper opening of the container body and has a liquid flow port connected to the interior of the container body; An annular member disposed on the upper side of the cap body; A hinge to connect the annular member to the cap body in a manner that allows the annular member to freely rotate around the central axis of the hinge; The cover body is disposed between the cap body and the annular member in the up and down direction, and covers the liquid flow port. In a state where potential energy is imparted in the opening direction of the central axis of the hinge, the cover body passes through the The hinge is connected to the cap body in a freely rotating manner; The cap body has a mouth-forming member for providing the liquid flow port, The mouth forming member has a bottom wall portion on which the liquid flow port is formed, and a peripheral wall portion, and the peripheral wall portion is cylindrical and stands upward from the bottom wall portion, The front end portion of the peripheral wall portion protrudes from the upper side more than other portions, The cover has a storage recess, which is recessed from the top wall of the cover and is in a concave or groove shape, In the stored state of the annular member, at least a part of the annular member is stored in the storage recess, and the stored state of the annular member is between the lower surface of the annular member and the lid top wall. in opposite directions, The annular member has an annular front end portion located at the frontmost side when the annular member is set to the stored state, The storage recess has a front end setting portion for setting the annular front end portion, The front end portion of the peripheral wall portion and the front end installation portion are arranged side by side in the front-rear direction.

[Aspect 2 of this creation] A cap assembly that can be installed on the mouth and neck of a container body with an opening on the upper part. The cap assembly includes: The cap body is used to block the upper opening of the container body and has a liquid flow port connected to the interior of the container body; An annular member disposed on the upper side of the cap body; A hinge to connect the annular member to the cap body in a manner that allows the annular member to freely rotate around the central axis of the hinge; The cover body is disposed between the cap body and the annular member in the up and down direction, and covers the liquid flow port. In a state where potential energy is imparted in the opening direction of the central axis of the hinge, the cover body passes through the The hinge is connected to the cap body in a freely rotating manner; The cover has a storage recess, which is recessed from the top wall of the cover and is in a concave or groove shape, In the stored state of the annular member, at least a part of the annular member is stored in the storage recess, and the stored state of the annular member is between the lower surface of the annular member and the lid top wall. in opposite directions, When the cap assembly is set to the stowed state, the upper surface of the annular member is configured to be continuous with the top wall portion of the cover body, and the outer peripheral surface of the annular member is configured to be It is continuous with the cover peripheral wall portion of the cover body.

[Aspect 3 of this creation] In the cap assembly according to Aspect 2, the lower surface of the annular member is shaped to follow the shape of the cap top wall of the cover body that faces the lower surface.

[Aspect 4 of this creation] A beverage container, including: the cap assembly as described in aspect 1 or 2; and the container body with the cap assembly installed.

[The effect of creation] According to the aspect of the invention, the cap assembly and the beverage container provided by the invention allow the ring-shaped member to freely rotate around the hinge to improve convenience, and at the same time, can suppress and reduce the protrusion of the ring-shaped member in the stored state. The dimension extending beyond the upper side of the cap assembly.

[First implementation type] The cap assembly 3A according to the first embodiment of the present invention and the beverage container 1A having the assembly will be described with reference to FIGS. 1 to 9 . In addition, in the following description, the cap assembly 3A may be simply called a cap, or the beverage container 1A may be simply called a container.

As shown in FIGS. 1 and 2 , a beverage container 1A according to this embodiment has a cap assembly 3A, and a bottomed cylindrical container body 2A including the cap assembly 3A. The cap assembly 3A is detachably mounted on the mouth and neck 2c of the container body 2A by screwing.

The cap assembly 3A includes a cap body 9 , an inner plug part 10 , a waterproof gasket 14 , an annular member 11 , and a hinge 12 . The cap body 9 has a cylindrical shape including a top wall (top wall), that is, a bottomed cylindrical shape. The inner plug part 10 is fixed to the cap body 9 . The waterproof gasket 14 is used to seal between the container body 2A and the cap body 9 . The hinge 12 can connect the annular member 11 to the cap body 9 in a freely rotating manner around the central axis A of the hinge.

The cap assembly 3A and the container body 2A are coaxially arranged with the central axis C of the cap assembly 3A as the center.

In this embodiment, the direction in which the central axis C extends is called the up-down direction. In the up-down direction, the direction from the bottom surface 2a of the container body 2A to the top wall 9b of the cap body 9 is called the upper side, and the direction from the top wall 9b to the bottom surface 2a is called the lower side.

The direction perpendicular to the central axis C is called the radial direction. In the radial direction, the direction approaching the central axis C is called the radial inner side or simply the inner side, and the direction away from the central axis C is called the radial outer side or simply the outer side.

In addition, in the radial direction, the direction passing through the hinge 12 and the central axis C is called the front-rear direction. In the front-rear direction, the direction from the hinge 12 toward the central axis C is called the front side, and the direction from the central axis C toward the hinge 12 is called the rear side.

In addition, in the radial direction, the direction orthogonal to the front-rear direction is called the left-right direction. As shown in FIG. 2 , the beverage container 1A is placed in an upright posture, that is, the top wall portion 9 b of the cap body 9 faces upward in the vertical direction, and when the beverage container 1A is viewed from the front side, in the left-right direction, the direction facing the left is It is called the left side and the direction towards the right is called the right side. In addition, the posture in which the top wall portion 9b of the cap body 9 is directed vertically downward is called an inverted posture.

The direction of rotation with the central axis C as the circumferential direction is called circumferential direction. The circumferential direction corresponds to the direction in which the cap assembly 3A and the container body 2A are screwed (screwing direction). As shown in FIG. 1 , one side T1 in the circumferential direction corresponds to the tightening side in the screwing direction, and the other side T2 in the circumferential direction corresponds to the loosening side (unscrewing direction) in the screwing direction. Therefore, in this embodiment, one side T1 in the circumferential direction may be called the circumferential tightening side T1, and the other side T2 in the circumferential direction may be called the circumferential loosening side T2.

More specifically, in a plan view viewed from the upper side of the beverage container 1A, one side of the circumferential direction (tightening side) T1 is clockwise with the central axis C as the center, and the other side of the circumferential direction (the loosening side) is Side) T2 is the counterclockwise direction with the central axis C as the center.

In addition, the central axis C is both the central axis of the cap assembly 3A and the central axis of the mouth and neck portion 2c of the beverage container 1A. The central axis C is different from the hinge central axis A, and can also be called the cap central axis C or the container central axis C.

The hinge center axis A of the hinge 12 is located further back than the center axis C. The central axis C and the hinge central axis A are located in a mutually twisted position.

The direction in which the central axis A of the hinge extends is called the hinge axis direction. The hinge axis direction is equivalent to the left and right direction. One side of the hinge axis direction corresponds to the right side, and the other side corresponds to the left side.

The hinge central axis A extends in the tangential direction of an imaginary circle (not shown) centered on the central axis C. Therefore, one side in the hinge axis direction corresponds to the tightening side T1 in the circumferential direction, and the other side in the hinge axis direction corresponds to the loosening side T2 in the circumferential direction (see FIG. 6 ).

The direction orthogonal to the central axis A of the hinge is called the hinge radial direction. In the hinge radial direction, the direction close to the hinge central axis A is called the hinge radial inside, and the direction away from the hinge central axis A is called the hinge radial outside. The direction of rotation with the central axis A of the hinge as the center is called the hinge circumferential direction.

As shown in FIG. 2 , the beverage container 1A can keep the beverage (liquid content, liquid) contained in the container body 2A warm or cold through the container body 2A having a vacuum insulation structure. The container body 2A has a bottomed cylindrical shape with an opening at the upper part. However, the container body 2A can also contain contents other than beverages.

Specifically, the container body 2A has a bottomed cylindrical outer container 4 and an inner container 5 made of, for example, stainless steel. In a state where the inner container 5 is housed in the outer container 4, their mouths are connected to each other. Joined to form a dual structure container.

In addition, a vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5 . The vacuum insulation layer 6 can be formed, for example, by blocking the exhaust hole provided at the center of the bottom surface of the outer container 4 in a chamber whose pressure is reduced to a high vacuum (evacuation).

The container body 2A has a bottom portion 2a, which is generally disk-shaped; a main body portion 2b, which is generally cylindrical and has a lower end connected to the outer peripheral portion of the bottom portion 2a; and a mouth and neck portion 2c, which is provided above the main body portion 2b and is relatively small. The diameter of the main body part 2b is further reduced.

The inner peripheral part of the neck part 2c is smaller in diameter than the inner peripheral surface of the main body part 2b. The upper end of the mouth and neck 2c serves as the upper opening 2d of the container body 2A, and the opening is circular. As shown in FIG. 3 , the mouth and neck portion 2 c has a female thread portion 7 , an overhang portion 8 , and a shoulder portion 2 e.

The female thread portion 7 is provided at the inner peripheral portion of the mouth and neck portion 2c. The overhanging portion 8 is provided at the inner peripheral portion of the mouth and neck portion 2c and is located below the female thread portion 7 . The overhanging portion 8 protrudes radially inward from the inner circumferential surface of the mouth and neck portion 2c and extends over the entire circumference of the mouth portion 2c. The overhanging portion 8 has an annular shape centered on the central axis C, and protrudes innermost in the mouth and neck portion 2c.

The shoulder portion 2e is provided on the outer peripheral portion of the mouth and neck portion 2c. The shoulder portion 2e has a tapered shape that decreases in diameter as it goes upward. In the mouth and neck part 2c, the part located above the shoulder part 2e has a substantially cylindrical shape extending in the up-and-down direction.

As shown in FIG. 1 , the beverage container 1A of the present embodiment has an overall substantially cylindrical appearance. However, the appearance shape of the beverage container 1A is not particularly limited and can be appropriately changed depending on the size, design, etc. In addition, each outer surface (surface) of the container body 2A, the cap body 9 and the annular member 11 may be painted or printed.

As shown in FIGS. 3 and 4 , the cap assembly 3A is installed on the mouth and neck 2c of the container body 2A, and forms a plug for closing the upper opening 2d of the container body 2A. FIG. 3 is a cross-sectional view showing the annular member 11 of the cap assembly 3A in a stowed state, and FIG. 4 is a cross-sectional view showing the annular member 11 of the cap assembly 3A in an open state. Figures 3 and 4 both show longitudinal cross-sectional views parallel to the central axis C (including the central axis C).

In this embodiment, the stored state of the ring-shaped member 11 shown in FIG. 3 represents one posture of the ring-shaped member 11, and is composed of both the lower surface 11a of the ring-shaped member 11 and the top wall portion 9b of the cap body 9 described below. The ones are facing each other. In addition, in the open state of the annular member 11 shown in FIG. 4 , the annular member 11 in the stored state is rotated around the hinge central axis A to be opened (opened), and the annular member 11 becomes usable. Other postures of holding the ring-shaped member 11 (that is, the posture in which the ring-shaped member 11 functions as a handle). In the open state of the annular member 11, the lower surface 11a of the annular member 11 and the top wall portion 9b of the cap body 9 do not face each other.

The cap body 9 is a member for closing the upper opening 2d of the container body 2A. The cap body 9 is made of heat-resistant resin such as polypropylene (PP). The cap body 9 has a peripheral wall part 9a and a top wall part 9b.

The peripheral wall portion 9a has a cylindrical shape and extends in the up-down direction to be continuous with the main body portion 2b of the container body 2A. Specifically, in this embodiment, the peripheral wall portion 9a has a tapered cylindrical shape whose diameter decreases toward the upper side. The peripheral wall portion 9a surrounds the outer peripheral portion of the mouth and neck portion 2c from the radially outer side to the entire circumference. The lower end of the peripheral wall portion 9a covers the shoulder portion 2e from the upper side.

The top wall part 9b is connected to the upper end part of the peripheral wall part 9a, and covers the upper opening part 2d of the container body 2A from the upper side. The top wall portion 9b has a substantially plate shape extending in a direction perpendicular to the central axis C. A gap is provided in the up-down direction between the top wall part 9b and the upper opening part 2d.

The top wall part 9b has an outer peripheral groove (storage recessed part) 9c. The outer peripheral groove 9c is provided in the outer peripheral part of the top wall part 9b. The outer peripheral groove 9c is recessed below the portion of the top wall portion 9b other than the outer peripheral groove 9c and extends in the circumferential direction. The outer peripheral groove 9c has an annular shape centered on the central axis C. The outer peripheral groove 9c has a substantially polygonal shape in a plan view, and in this embodiment, has a substantially rectangular shape. However, this creation is not limited to this. Although not particularly shown in the drawings, the outer peripheral groove 9c may be substantially circular in plan view. The outer peripheral groove 9c is located at the upper end peripheral portion of the cap body 9 and opens upward and radially outward. That is, the cap body 9 has a concave or groove-shaped accommodation recessed portion recessed from the top wall portion 9b of the cap body 9. In this embodiment, the accommodation recess is the outer peripheral groove 9c.

As shown in FIGS. 3 and 4 , in a longitudinal sectional view parallel to the central axis C, the wall surface of the outer peripheral groove 9 c (the inner wall of the groove) extends downward toward the radially outer side. Specifically, in this embodiment, the outer peripheral groove 9c has a concave curve shape in this longitudinal cross-sectional view. That is, the wall surface of the outer peripheral groove 9c has a concave curved surface shape. However, the present invention is not limited to this example. Although not particularly shown in the drawings, the outer peripheral groove 9c (wall surface) may also have a substantially cylindrical side wall facing radially outward and a substantially planar side wall facing upward. bottom wall.

The inner plug part 10 is made of heat-resistant resin such as polypropylene (PP). The inner plug part 10 is integrated with the cap body 9 to close the upper opening part 2d. As shown in FIG. 3 , the inner plug part 10 is in the shape of a bottomed cylinder and is integrally installed on the lower surface of the top wall part 9 b of the cap body 9 through welding or other means. The inner plug part 10 is provided in the mouth and neck part 2c of the container body 2A. A heat insulating material S is provided inside the inner plug part 10 . The inside of the inner plug portion 10 can also be made into an air layer instead of the heat insulating material S.

The inner plug part 10 has a male thread part 13 and a flange part 10a. The male thread portion 13 is provided on the outer peripheral surface of the inner plug portion 10 . In the beverage container 1A of this embodiment, the inner plug part 10 (cap assembly 3A) is detachably attached to the container body 2A by screwing the male thread part 13 and the female thread part 7 .

The flange portion 10a protrudes radially outward from the lower end portion of the inner plug portion 10 and extends entirely around the circumferential direction. The flange portion 10a is provided inside the overhanging portion 8 and faces the overhanging portion 8 in the radial direction.

The waterproof gasket 14 is attached to the outer peripheral portion of the inner plug portion 10 . The waterproof gasket 14 is an annular sealing member for sealing between the container body 2A and the inner plug part 10 . The waterproof gasket 14 is made of a heat-resistant rubber or elastic member such as silicone. The inner circumferential portion of the waterproof gasket 14 is provided with an inner circumferential recessed portion 14a that is recessed radially outward over the entire circumference in the circumferential direction. The inner peripheral recessed portion 14a of the waterproof gasket 14 is embedded in the flange portion 10a, whereby the waterproof gasket 14 is installed in the inner plug portion 10.

On the outer peripheral surface of the waterproof gasket 14, an elastic flange portion 14b is provided to protrude radially outward. The elastic flange portion 14b is provided on the outer peripheral portion of the waterproof gasket 14 and extends entirely around the circumferential direction. Two elastic flange portions 14b are provided in parallel in the up-down direction. When the cap assembly 3A is attached to the container body 2A, the elastic flange portion 14b is elastically deformed while being in a state of tight contact with the entire circumference of the overhanging portion 8 of the container body 2A. Thereby, the waterproof gasket 14 can water-tightly seal between the overhang part 8 (container body 2A) and the inner plug part 10 (cap assembly 3A).

The waterproof liner 14 can be removed from the flange portion 10a by stretching the waterproof liner 14 itself to elastically deform. Thereby, the cap assembly 3A and the waterproof liner 14 can be cleaned separately to maintain hygiene between the waterproof liner 14 and the inner plug 10 .

The waterproof gasket 14 is not limited to the above-mentioned shape. For example, the number of elastic flange portions 14b is not limited to the two mentioned above, and may be designed to be one or three or more. In addition, the waterproof gasket 14 is not limited to the structure provided with the elastic flange portion 14b as described above, and its shape and the like can be appropriately changed.

The inner plug part 10 , the thermal insulation material S and the waterproof gasket 14 can each be regarded as one of the components of the cap body 9 . In this case, the cap body 9 also includes an inner plug portion 10 , a thermal insulation material S, and a waterproof liner 14 .

In the beverage container 1A of this embodiment, starting from the state in which the inner stopper 10 is inserted into the inner side of the container body 2A from the upper opening 2d, as shown in FIGS. 1 and 5 , the cap body 9 (cap body 9) is The assembly 3A) is rotated toward one side (fastening side) T1 in the circumferential direction relative to the container body 2A, and the cap assembly 3A can be mounted to the container body 2A through the screwing of the female thread portion 7 and the male thread portion 13 . In addition, from the state where the cap assembly 3A is attached to the container body 2A, the cap body 9 (the cap assembly 3A) is rotated relative to the container body 2A to the other side (release side) T2 in the circumferential direction, thereby releasing the The female thread part 7 and the male thread part 13 are screwed together, so that the cap assembly 3A can be detached from the container body 2A.

The annular member 11 is made of heat-resistant plastic such as polypropylene (PP). The annular member 11 has an annular shape centered on the central axis C. The annular member 11 has a substantially polygonal shape, and in this embodiment, has a substantially rectangular shape. However, the present invention is not limited to this. The ring-shaped member 11 may also be substantially circular. Although not particularly shown in the figure, the ring-shaped member 11 may also be renamed a handle or the like.

As shown in FIG. 3 , the annular member 11 is provided on the upper side of the cap body 9 . Specifically, in the stored state of the annular member 11 shown in FIG. 3, the annular member 11 is provided on the top wall portion 9b. More specifically, the annular member 11 is provided on the outer peripheral portion of the top wall portion 9b. , that is, on the outer peripheral groove 9c. At least a lower portion of the annular member 11 is accommodated in the outer peripheral groove 9c. That is, in the stored state of the annular member 11, at least a part of the annular member 11 is accommodated in the outer peripheral groove (storage recess) 9c.

The lower surface 11a of the annular member 11 has an annular shape centered on the central axis C. The lower surface 11a of the annular member 11 is shaped to follow the shape of the top wall portion 9b of the cap body 9 that faces the lower surface 11a. That is, the lower surface 11a of the annular member 11 is formed into a shape that follows the groove of the outer peripheral groove 9c facing the lower surface 11a. Specifically, in the longitudinal sectional view shown in FIG. 3 , the lower surface 11 a of the annular member 11 extends upward toward the radially inner side. In this embodiment, the lower surface 11a of the annular member 11 has a convex curve shape in this longitudinal cross-sectional view. That is, the lower surface 11a of the annular member 11 has a convex curved surface shape. However, the present invention is not limited thereto. Although not particularly illustrated, the annular member 11 may have a substantially planar lower surface facing downward and a substantially cylindrical inner peripheral surface facing radially inward.

In this embodiment, the inner peripheral part of the lower surface 11a of the annular member 11 faces the wall surface of the outer peripheral groove 9c facing radially outward. The inner peripheral portion of the annular member 11 and the wall surface of the outer peripheral groove 9c are fitted with each other. In this embodiment, since each of the annular member 11 and the outer peripheral groove 9c has a polygonal shape, these fittings prevent the annular member 11 and the outer peripheral groove 9c from relatively rotating in the circumferential direction.

The outer peripheral surface 11b of the annular member 11 extends radially inward toward the upper side. That is, the outer peripheral surface 11b of the annular member 11 has a tapered shape in which the diameter decreases toward the upper side. In this embodiment, as shown in FIG. 3 , when the annular member 11 is in the stored state, the outer peripheral surface 11 b of the annular member 11 is provided to be continuous with the outer peripheral surface ( forming a continuous surface) substantially flush with the peripheral wall portion 9a. That is, the outer peripheral surface 11 b of the annular member 11 is provided to be continuous with the peripheral wall portion 9 a of the cap body 9 .

The annular member 11 has a flat portion 11c and a concave portion 11d on its upper surface. The flat surface part 11c is provided in the outer peripheral part of the upper surface of the annular member 11. The planar portion 11c has an annular shape centered on the central axis C. The planar portion 11c has a substantially planar shape extending in a direction perpendicular to the central axis C.

The concave portion 11d is provided in a portion of the upper surface of the annular member 11 other than the outer peripheral portion, that is, in a portion located further inside than the flat portion 11c. The concave portion 11d is recessed toward the lower side than the flat portion 11c. The concave portion 11d has an annular shape centered on the central axis C. In the longitudinal sectional view shown in FIG. 3 , the concave portion 11 d extends upward toward the radially outer side. Specifically, the concave portion 11d forms a concave curve shape in this longitudinal cross-sectional view. That is, the concave portion 11d has a concave curved surface shape. The inner peripheral portion of the concave portion 11d is formed to be smoothly connected to the portion of the top wall portion 9b located inside the outer peripheral groove 9c.

In this embodiment, the lower portion of the annular member 11 is disposed in the peripheral groove 9c, the outer peripheral surface 11b is formed to be continuous with the peripheral wall portion 9a, and the concave portion 11d is formed to be continuous with the inner portion of the top wall portion 9b. Therefore, although The annular member 11 can still enhance the aesthetic appearance. In addition, since the outer surface (surface) of the annular member 11 is provided with concavities and convexes, as shown in FIG. 4 , when the annular member 11 is in an open state and the user holds the finger through the annular member 11, it is difficult to slip off. , easy to hold stably.

Although not particularly shown in the figures, when the annular member 11 is in the stored state, the upper surface of the annular member 11 may be provided to be continuous with the top wall portion 9 b of the cap body 9 . That is, the upper surface of the annular member 11 and the upper surface of the top wall portion 9 b of the cap body 9 are arranged to be substantially aligned so as to form a continuous surface. In this case, when the annular member 11 is in the stored state, the annular member 11 does not protrude from the upper surface or the outer peripheral surface of the cap assembly 3A. Therefore, the external shapes of the ring-shaped member 11 in the stored state and the cap assembly 3A can be further integrated. This makes the appearance design of the cap assembly 3A better.

In addition, in this embodiment, as shown in FIGS. 1 , 5 , 7 and 8 , the annular member 11 has an annular rear end portion 11 e connected to the hinge 12 and an annular front end portion 11 f located in the annular shape. The frontmost position of the member 11 when it is in the stored state; and a pair of annular side end portions 11g connecting the annular rear end portion 11e and the annular front end portion 11f.

Continuing the above, at least one of the annular rear end portion 11e, the annular front end portion 11f, and the pair of annular side end portions 11g is provided in the outer peripheral groove (storage recessed portion) 9c. Specifically, the outer peripheral groove 9c has a rear end setting portion 9e for setting the annular rear end portion 11e, a front end setting portion 9f for setting the annular front end portion 11f, and a pair of annular side end portions 11g. A pair of side end installation portions 9g are provided. That is, in this embodiment, the annular rear end part 11e, the annular front end part 11f, and the pair of annular side end parts 11g are all provided in the outer peripheral groove (storage recessed part) 9c.

The hinge 12 connects the rear portion of the cap body 9 and the annular member 11 so as to be relatively rotatable in the hinge circumferential direction. The hinge 12 is provided with a spring mechanism including a potential energy imparting part 19 and a sealing part 20 which will be described later. The hinge 12 extends along the hinge axis direction with the hinge central axis A as the center.

As shown in FIGS. 5 to 9 , the hinge 12 has a cap bearing portion 15 , annular bearing portions 16 and 17 , a potential energy imparting portion 19 , a sealing portion 20 , and a hinge shaft 18 . Among them, FIG. 6 shows a cross-section (longitudinal cross-section) of the hinge 12 parallel to the central axis C of the cap assembly 3A. In addition, in the exploded perspective view of the cap assembly 3A shown in FIGS. 7 and 8 , the arrangement order of the constituent members and the arrangement relationship of the constituent members after assembly (assembly completed state) are different in some parts.

One of the cap bearing portion 15 and the annular bearing portions 16 and 17 is provided at a distance from each other in the hinge axis direction, and the other of the cap bearing portion 15 and the annular bearing portions 16 and 17 is provided. , one is provided between one of the two mentioned ones (the cap bearing part 15 or the annular bearing part 16, 17). In this embodiment, among the cap bearing portion 15 and the annular bearing portions 16 and 17, two annular bearing portions 16 and 17 are provided spaced apart from each other in the hinge axis direction. The cap bearing portion 15 is provided One is located between the two annular bearing parts 16 and 17 .

The cap bearing portion 15 is provided to protrude rearward and upward from the upper end portion of the peripheral wall portion 9 a of the cap body 9 . That is, the cap bearing part 15 is provided on the cap body 9 . The cap bearing portion 15 is integrated with the cap body 9 to form a single component. The cap bearing portion 15 has a substantially cylindrical shape extending along the hinge axis direction. The cap bearing portion 15 is located at the left-right center portion of the rear portion of the cap body 9 . The cap bearing portion 15 is located at the center of the hinge 12 in the hinge axis direction.

As shown in FIGS. 6 and 9 , the cap bearing part 15 has a storage recessed part 15b, an arm receiving part 15c, a sliding contact surface 15d, and a shaft hole 15a. That is, the hinge 12 has the storage recess 15b.

In this embodiment, the storage recessed portion 15b is recessed in the cap bearing portion 15 and extends in the hinge axis direction. Specifically, the storage recess 15b has a multi-stage circular shape centered on the hinge central axis A, and is opened on one end surface of the cap bearing portion 15 facing the hinge axis direction, and faces the hinge from this end surface. The other side of the axis extends.

The storage recessed portion 15b has a large-diameter hole portion 15f and a small-diameter hole portion 15e. The large-diameter hole portion 15f has a circular hole shape and is opened at one end surface of the cap bearing portion 15 in the hinge axis direction. The large-diameter hole portion 15f is provided in one of the portions in the hinge axis direction of the storage recessed portion 15b.

The small-diameter hole portion 15e is provided in a portion on the other side in the hinge axis direction of the storage recessed portion 15b. The small-diameter hole portion 15e has a circular hole shape with an inner diameter smaller than the large-diameter hole portion 15f, and is opened at the bottom surface of the large-diameter hole portion 15f.

The arm receiving portion 15c is provided in the storage recess 15b and has a groove shape extending in the hinge axis direction. Specifically, the arm receiving portion 15c is recessed from the inner peripheral surface of the large-diameter hole portion 15f toward the outside in the hinge radial direction, and extends along the hinge axis direction.

The sliding contact surface 15d is provided on the other end surface of the cap bearing portion 15 in the hinge axis direction. The sliding contact surface 15d has a planar shape extending in a direction perpendicular to the central axis A of the hinge.

The shaft hole 15a is in the shape of a circular hole extending in the hinge axis direction. The inner diameter of the shaft hole 15a is smaller than the accommodation recess 15b. Specifically, the inner diameter of the shaft hole 15a is smaller than the inner diameter of the small diameter hole 15e. One end of the shaft hole 15a in the hinge axis direction is open to the bottom surface of the small-diameter hole portion 15e. The other end of the shaft hole 15a in the hinge axis direction opens to the sliding surface 15d.

As shown in FIGS. 6 to 8 , the annular bearing portions 16 and 17 are provided on the annular member 11 and adjacent to the cap bearing portion 15 in the hinge axis direction. The annular bearing portions 16 and 17 are formed integrally with the annular member 11 as a single member. In this embodiment, two annular bearing portions 16 and 17 are provided.

The two annular bearing parts 16 and 17 include a first annular bearing part 16 and a second annular bearing part 17 . The first annular bearing portion 16 is provided on one side of the two annular bearing portions 16 and 17 in the hinge axis direction. The second annular bearing portion 17 is provided on the other side in the hinge axis direction of the two annular bearing portions 16 and 17 .

The first annular bearing portion 16 protrudes rearward from the rear lower end portion of the outer peripheral surface 11 b of the annular member 11 . The first annular bearing portion 16 is adjacent to one side of the cap bearing portion 15 in the hinge axis direction. The first annular bearing portion 16 has a substantially cylindrical shape extending in the hinge axis direction.

The first annular bearing portion 16 has a bearing sliding surface 16b and a shaft hole 16a. That is, the hinge 12 has the bearing sliding surface 16b, and in this embodiment, the bearing sliding surface 16b is located in the first annular bearing portion 16 (annular bearing portion).

The bearing sliding surface 16 b is provided on the end surface of the first annular bearing portion 16 facing the other side in the hinge axis direction. The bearing sliding surface 16b is flat and expands in a direction perpendicular to the hinge central axis A. The bearing sliding surface 16b in this embodiment has a step portion 16c. The step portion 16c has a concave shape that is recessed toward one side in the hinge axis direction from the bearing sliding surface 16b. The step portion 16c is provided in a portion of the bearing sliding surface 16b in the hinge circumferential direction. Specifically, in this embodiment, when the annular member 11 is in the stored state, the step portion 16c is provided at the lower end of the bearing sliding surface 16b.

The shaft hole 16a penetrates the first annular bearing portion 16 in the hinge axis direction. The other end of the shaft hole 16a in the hinge axis direction is opened to the bearing sliding surface 16b. The shaft hole 16a is in the shape of multiple circular holes extending in the direction of the hinge axis. The inner diameter of the portion of the shaft hole 16a other than the end on one side in the hinge axis direction is smaller than the inner diameter of the end on one side in the hinge axis direction.

The second annular bearing portion 17 protrudes toward the rear side from the rear lower end portion of the outer peripheral surface 11 b of the annular member 11 . The second annular bearing portion 17 is adjacent to the other side of the cap bearing portion 15 in the hinge axis direction. The second annular bearing portion 17 has a substantially cylindrical shape extending in the hinge axis direction.

The second annular bearing portion 17 has a sliding convex portion 17b, a contact surface 17c, and a shaft hole 17a. The sliding convex portion 17b is located at one end of the second annular bearing portion 17 in the hinge axis direction. The sliding contact convex portion 17b extends from a portion of the second annular bearing portion 17 other than one end in the hinge axis direction, that is, a portion other than the sliding contact convex portion 17b, toward one of the hinge axis directions. Side protrusion setting. The sliding contact convex portion 17b has a cylindrical shape extending in the hinge axis direction. The outer diameter of the sliding protrusion 17b is smaller than the portion of the second annular bearing portion 17 other than the sliding protrusion 17b.

The contact surface 17c is provided on one end surface of the second annular bearing portion 17 facing the hinge axis direction. In this embodiment, the contact surface 17c is provided on one end surface of the sliding protrusion 17b facing the hinge axis direction. The contact surface 17c has a planar shape extending in a direction perpendicular to the hinge central axis A. The contact surface 17c is in slidable contact with the sliding contact surface 15d of the cap bearing part 15.

The shaft hole 17a penetrates the second annular bearing portion 17 in the hinge axis direction. One end of the shaft hole 17a in the hinge axis direction is opened to the contact surface 17c. The shaft hole 17a is in the shape of a multi-section circular hole extending in the direction of the hinge axis. The inner diameter of the portion of the shaft hole 17a other than the end on the other side in the hinge axis direction is smaller than the inner diameter of the end on the other side in the hinge axis direction.

The potential energy imparting portion 19 can be elastically deformed. Specifically, in this embodiment, the potential energy imparting portion 19 has a spiral shape centered on the hinge central axis A and is a metal compression spring that can elastically deform in the direction of the hinge axis. The potential energy imparting part 19 is accommodated in the storage recessed part 15b. The potential energy imparting portion 19 is provided in the small diameter hole portion 15e and the large diameter hole portion 15f extending throughout the storage recessed portion 15b. The other end portion in the hinge axis direction of the potential energy imparting portion 19 contacts the bottom surface of the small-diameter hole portion 15e. One end of the potential energy imparting portion 19 in the hinge axis direction contacts the other end surface of the sealing portion 20 facing the hinge axis direction (potential energy imparting portion contact surface 20 d to be described later).

The potential energy imparting part 19 passes through the sealing part 20 and imparts potential energy to the first annular bearing part 16 toward one side of the hinge axis direction with respect to the cap bearing part 15 . That is, the potential energy imparting part 19 imparts potential energy to the annular member 11 toward one side in the hinge axis direction with respect to the cap body 9 . In addition, the potential energy imparting portion 19 allows the annular member 11 to be displaced toward the other side in the hinge axis direction relative to the cap body 9 through elastic deformation.

The sealing portion 20 has a substantially cylindrical shape extending in the hinge axis direction. The sealing portion 20 is provided on the other side of the first annular bearing portion 16 in the hinge axis direction, and the sealing portion 20 is provided on one side of the potential energy imparting portion 19 in the hinge axis direction. The sealing part 20 is interposed between the first annular bearing part 16 and the potential energy imparting part 19 in the hinge axis direction. At least a part of the sealing part 20 is inserted into the large-diameter hole part 15f of the accommodation recessed part 15b. Therefore, the sealing part 20 seals the potential energy imparting part 19 in the storage recessed part 15b. In the enclosed portion 20 , the portion other than the portion inserted into the storage recess 15 b is exposed between the first annular bearing portion 16 and the cap bearing portion 15 .

In this embodiment, at least a part of the sealing portion 20 (the end on the other side in the hinge axis direction) is inserted into the storage recess 15b. Since the sealing portion 20 cannot be completely separated from the storage recess 15b, it is sealed in the storage recess 15b. The internal potential energy imparting part 19 is exposed to the outside. Therefore, the potential energy imparting part 19 is not visible from the appearance, and a good aesthetic effect can be obtained.

The material of the enclosed part 20 is different from that of the first annular bearing part 16. For example, polyoxymethylene (POM) or acrylonitrile-butyl-styrene-styrene (ABS) may be appropriately used to be more wear-resistant than the first annular bearing part 16. Material with better performance. In the cap assembly 3A of this embodiment, the sealing portion 20 and the first annular bearing portion 16 which are excellent in wear resistance are separately and independently configured, thereby improving the durability of the hinge 12 .

The sealing part 20 has an arm part 20b, a sealing sliding surface 20c, a potential energy imparting part contact surface 20d, and a shaft hole 20a. As shown in FIG. 8 , the arm portion 20 b protrudes outward in the hinge radial direction from the outer peripheral surface of the sealing portion 20 and extends in a rib shape along the hinge axis direction. The arm part 20b is inserted into the arm part receiving part 15c of the cap bearing part 15 shown in FIG. 7 and FIG. 9. The arm portion 20b and the arm portion receiving portion 15c are slidably fitted in the hinge axis direction. By inserting the arm portion 20b into the arm receiving portion 15c, the sealing portion 20 restricts the rotation of the cap bearing portion 15 in the hinge circumferential direction, and allows the cap bearing portion 15 to slide in the hinge axis direction.

As shown in FIGS. 6 and 7 , the sealing sliding surface 20 c is provided on one end surface of the sealing portion 20 facing the hinge axis direction. The sealing sliding surface 20c is flat and expands in a direction perpendicular to the hinge central axis A. The sealing sliding surface 20c is in slidable contact with the bearing sliding surface 16b of the first annular bearing portion 16.

In this embodiment, the sealing sliding surface 20c has a convex portion 20e. The convex portion 20e protrudes toward one side in the hinge axis direction from the sealing sliding surface 20c and has a convex shape. The convex portion 20e is provided in a portion of the hinge circumferential direction that encloses the sliding surface 20c. In this embodiment, the convex portion 20e is provided at the lower end of the sealing sliding surface 20c. When the annular member 11 is in the stowed state, the convex portion 20e is opposite to the step portion 16c in the hinge axis direction, and is detachably locked in the step portion 16c.

The cap assembly 3A of this embodiment is provided with a stored state maintaining mechanism 21 for maintaining the posture of the annular member 11 in the stored state. Furthermore, the stored state maintaining mechanism 21 has a stepped portion (locked portion) 16c provided on the annular member 11 and a convex portion (locking portion) 20e locked in the stepped portion of the annular member 11 in the stored state. 16c. In this embodiment, the stored state maintaining mechanism 21 is provided on the side (ie, the rear side) closer to the hinge 12 than the central axis C of the cap in the front-rear direction. When the user operates the annular member 11 to rotate in the opening direction about the hinge central axis A with a torque greater than or equal to a predetermined amount, the step portion 16c rides on the convex portion 20e in the hinge circumferential direction.

Specifically, in the process of transferring from the stored state of the ring member 11 to the open state, the step portion 16c will rotate around the hinge central axis A together with the ring member 11. When the ring member 11 is moved by a predetermined or above During torsional rotation, the upper convex portion 20e can be ridden around the hinge central axis A while pushing the sealing portion 20 to the other side in the hinge axis direction against the potential energy imparting force of the potential energy imparting portion 19.

In other words, in the process of converting the annular member 11 from the stored state to the open state, the convex portion 20e can resist the potential energy imparting ability of the potential energy imparting portion 19 and ride around the hinge central axis A on the upper step portion. 16c. Specifically, during the above process, the convex portion 20e comes into contact with the wall portion located at the end of the hinge circumferential direction in the step portion 16c, thereby generating a force that displaces the sealing portion 20 to the other side in the hinge axis direction. , causing the potential energy imparting portion 19 to elastically deform. By elastically deforming the potential energy portion 19, the enclosed portion 20 is displaced to the other side in the hinge axis direction, and the convex portion 20e rides on the wall portion of the upper step portion 16c in the hinge circumferential direction, allowing it to move freely. The step portion 16c is separated. However, at this time, the convex portion 20e is in freely sliding contact with the bearing sliding surface 16b except for the mid-step difference portion 16c.

Contrary to the above situation, in the process of returning the annular member 11 from the open state to the stored state, when the step portion 16c moves (rotates) in the hinge circumferential direction relative to the convex portion 20e, and is located between the step portion 16c and the convex portion When 20e are in opposite positions to each other in the hinge axis direction, the potential energy imparting part 19 will resume its deformation, and the sealing part 20 will be displaced to one side in the hinge axis direction, and the convex part 20e will be inserted (locked) into the hinge axis direction again. within the step portion 16c. Thereby, the stored state holding mechanism 21 maintains the annular member 11 in the stored state posture again.

That is, in this embodiment, the hinge 12 has a click mechanism (storage state maintaining mechanism 21) including the step portion 16c and the convex portion 20e. Gives a sudden feeling of resistance when turning in the open or closed direction. In this embodiment and the embodiments described below, "sudden resistance feeling" may be renamed as "clicking feeling".

As shown in FIGS. 6 and 8 , the potential energy imparting portion contact surface 20 d is provided on the other end surface of the sealing portion 20 facing the hinge axis direction. The potential energy imparting portion contact surface 20d is planar and expands in a direction perpendicular to the hinge central axis A. The potential energy imparting part contact surface 20d is in contact with one end of the potential energy imparting part 19 in the hinge axis direction.

The shaft hole 20a penetrates the sealing part 20 in the hinge axis direction. One end of the shaft hole 20a in the hinge axis direction is opened to the sealing sliding surface 20c. The other end of the shaft hole 20a in the hinge axis direction is opened to the potential energy imparting portion contact surface 20d. The shaft hole 20a is in the shape of a circular hole extending in the hinge axis direction.

The hinge shaft 18 has a cylindrical shape centered on the hinge central axis A, and extends in the direction of the hinge shaft 18 . The hinge shaft 18 is made of metal and is inserted into the cap bearing part 15 , the pair of annular bearing parts 16 and 17 , the potential energy imparting part 19 , and the sealing part 20 . The hinge shaft 18 bears and supports the cap bearing portion 15 and the annular bearing portions 16 and 17 in such a manner that the cap bearing portion 15 and the annular bearing portions 16 and 17 are rotatable relative to the hinge central axis A.

According to the cap assembly 3A and the beverage container 1A of this embodiment described above, the annular member 11 is connected to the cap body 9 through the hinge 12 , that is, the annular member 11 can freely rotate around the central axis A of the hinge. Therefore, the posture of the annular member 11 can be appropriately selected in accordance with the usage conditions and the like, so that the annular member 11 is in an open state or a stored state, thereby improving usability. In particular, when the ring member 11 is in the open state, the user can put their fingers through the ring member 11 for carrying, and when the ring member 11 is in the stored state, the upper part of the cap (the upper part of the container) can be suppressed from becoming bulky. , easy to store in bags and other places.

Moreover, in this embodiment, the storage state holding mechanism 21 which can hold the annular member 11 in the storage state is provided. Therefore, for example, even when the beverage container 1A is turned upside down or centrifugal force acts, it is possible to prevent the annular member 11 in the stored state from accidentally changing to the open state. Therefore, the volume increase of the annular member 11 can be more stably suppressed, and the annular member 11 is less likely to become an obstacle when storing the beverage container 1A in a bag or the like or operating the switch cap, making use more convenient.

In this embodiment, the stored state maintaining mechanism 21 has a step portion (locked portion) 16c provided on the annular member 11 and a convex portion (locking portion) 20e that locks to the step portion 16c of the annular member 11 in the stored state. When the annular member 11 is rotated in the opening direction of the hinge central axis A with a torque greater than or equal to a predetermined amount, the step portion 16c rides on the convex portion 20e. In this case, since the step portion (locked portion) 16c and the convex portion (locking portion) 20e are locked, it is possible to stably prevent the annular member 11 in the stored state from accidentally changing to the open state. In addition, when using the annular member 11, the user can easily rotate the annular member 11 in the opening direction with a rotational force above a certain level (a torque above a predetermined level) without having to perform cumbersome operations. The annular member 11 becomes an open state. Therefore, the operability is good.

In addition, when the user rotates the annular member 11 in the stored state in the opening direction about the hinge central axis A, the step portion (locked portion) 16c rides on the convex portion (locking portion) 20e , allowing the user to feel a sudden sense of resistance. Since this sudden resistance feeling can be felt, the user can visually recognize that the ring member 11 has been released from the stored state.

In addition, when the annular member 11 in the open state is returned to the stored state, the step portion (locked portion) 16c will engage with the convex portion (locking portion) 20e in the opposite direction to the above, so the user A sudden feeling of resistance can still be felt. Since this sudden resistance is felt, the user can visually recognize that the ring member 11 has returned to the stored state.

In this embodiment, the stored state maintaining mechanism 21 is provided on the side closer to the hinge 12 than the central axis C of the cap in the front-rear direction. In this case, the distance between the stored state maintaining mechanism 21 and the hinge central axis A can be controlled to be small, and the rotation radius of the stored state maintaining mechanism 21 can also be controlled to be small. Therefore, the stored state maintaining mechanism 21 is not easily affected by molding errors or component deformations during manufacturing, and therefore the function of the stored state maintaining mechanism 21 can be maintained satisfactorily. In addition, since the stored state maintaining mechanism 21 is provided at a position that is not easily visible from the front, the appearance design is good.

In addition, the cap assembly 3A and the beverage container 1A of this embodiment are provided with an outer peripheral groove (storage recess) 9c for accommodating at least a part of the annular member 11 in the stored state. Therefore, when the annular member 11 is in the stowed state, the size of the annular member 11 protruding from the upper side of the cap assembly 3A can be controlled to be small, and an increase in volume caused by the provision of the annular member 11 can also be suppressed. Thereby, the annular member 11 can be prevented from affecting the appearance design of the cap assembly 3A. As shown in this embodiment, the ring-shaped member 11 in the stored state and the outer shape of the cap assembly 3A may be formed substantially integrally.

Specifically, at least one of the constituent elements of the annular member 11 including the annular rear end portion 11e, the annular front end portion 11f, and a pair of annular side end portions 11g. In this embodiment, these components are all provided in the peripheral groove 9c. The annular member 11 can be prevented from protruding from the cap assembly 3A more stably.

In addition, in this embodiment, the potential energy imparting part 19 of the hinge 12 imparts potential energy to one side of the annular member 11 in the hinge axis direction. Therefore, for example, when the user passes a finger through the ring member 11 to carry it, or when the beverage container 1A is dropped, even if the ring member 11 receives a force toward the other side of the hinge axis direction, the potential energy can be transferred to the part by imparting potential energy. The elastic deformation of the cap body 19 absorbs the force and makes it difficult to transmit the force to the cap body 9 . This can prevent the cap assembly 3A from rotating in the circumferential direction (unscrewing direction) due to the above-mentioned force, and can maintain the screwed state of the cap assembly 3A and the container body 2A well.

Specifically, in this embodiment, one side in the hinge axis direction corresponds to the circumferential tightening side T1 where the cap assembly 3A is screwed to the container body 2A, and the other side in the hinge axis direction corresponds to the circumferential fastening side T1. The release side of the direction is T2. In this case, when the cap assembly 3A is screwed to the container body 2A in the circumferential direction, a force (rotational force) acting toward the loosening side T2 (the other side in the hinge axis direction) acts on the annular member 11 When this happens, the force can be absorbed by the potential energy imparting portion 19, thereby suppressing the above-mentioned screw loosening. Therefore, it is possible to prevent the beverage in the container body 2A from overflowing to the outside of the container due to the loosening of the screw.

In this embodiment, among the cap bearing portion 15 and the annular bearing portions 16 and 17 , two annular bearing portions 16 and 17 are provided spaced apart from each other in the hinge axis direction, and the two annular bearing portions 16 A cap bearing part 15 is provided between , 17. That is, two of the cap bearing portion 15 and the annular bearing portions 16 and 17 are provided spaced apart from each other in the hinge axis direction. The other one is set in the interval between the two. In this case, the above-mentioned effects can be achieved by the potential energy imparting portion 19 of the hinge 12 and the strength of the hinge 12 can be stably increased.

In this embodiment, the hinge 12 has the storage recess 15b and the sealing part 20 which can seal the potential energy imparting part 19 in the storage recess 15b. In this case, since the potential energy imparting portion 19 can be enclosed in the storage recessed portion 15 b by the sealing portion 20 , the potential energy imparting portion 19 can be suppressed from being exposed to the outside, and the appearance design of the cap assembly 3A and the beverage container 1A can be presented. Good aesthetics. Furthermore, since the potential energy imparting part 19 is sealed, it is possible to suppress the function of the potential energy imparting part 19 from being degraded or becoming unstable due to adhesion of dirt or the like.

In this embodiment, the storage state maintaining mechanism 21 is provided as a click mechanism of the hinge 12. Specifically, the bearing sliding surface 16b has a step portion 16c, and the sealing sliding surface 20c has a biased potential that can resist the biased potential energy portion 19. Ability to ride around the convex portion 20e of the upper stage difference portion 16c of the hinge central axis A. In this case, when the user rotates the annular member 11 around the hinge central axis A, the convex portion 20e can resist the potential energy imparting ability of the potential energy imparting portion 19 and ride the upper step portion 16c, so that the user can feel the sudden change. sense of resistance. Since a sudden resistance feeling is obtained, the user can feel what state the rotation operation of the ring member 11 is in.

Specifically, in this embodiment, when the annular member 11 is in the stored state, if the annular member 11 is rotated in the opening direction, the convex portion 20e will relatively ride on the upper step portion 16c in the hinge circumferential direction, so that A sudden feeling of resistance is produced, and you can feel that the rotation operation has started. However, when the annular member 11 rotates in the opening direction, since the convex portion 20e rides on the upper step portion 16c, resistance will be generated due to the biasing force, so that unintentional rotation in the opening direction can be suppressed.

In addition, in this embodiment, although the structure is such that just before the annular member 11 enters the stored state, the convex portion 20e will be inserted into the step portion 16c again (that is, the step portion 16c and the convex portion 20e are locked), by adjusting the step The riding position (locking position) can be freely set by the position of the portion 16c and the convex portion 20e. For example, in the reference example of this embodiment, when the annular member 11 is rearward in the open state and before rotating to the extreme position, the convex portion 20e may be inserted into the step portion 16c again. In this case, since the stepped portion 16c and the convex portion 20e are locked, the annular member 11 is maintained in the open state. Therefore, the step portion 16c and the convex portion 20e serve as an open position maintaining mechanism to maintain the posture of the annular member 11 when the annular member 11 is in an open state. In addition, just before the annular member 11 enters the stowed state, when the convex portion 20e is inserted into the step portion 16c again, the user can also get a sudden sense of resistance, and can feel that the rotation operation of the annular member 11 has been completed. end.

In another example, the convex portion 20e may be inserted into the step portion 16c again when the annular member 11 is in an open state and stands upward. In this case, since the stepped portion 16c and the convex portion 20e are locked, the annular member 11 is maintained in an upwardly erected state. Therefore, the user can place the beverage container 1A in a state where the ring-shaped member 11 is raised upward, and can hang his finger on the ring-shaped member 11 and carry it at any time. In addition, when the convex portion 20e is inserted into the step portion 16c again, the user can also get a sudden resistance feeling, and can visually identify the current state of the rotation operation of the ring-shaped member 11.

In this embodiment, the potential energy imparting part 19 of the hinge 12 imparts potential energy to the annular member 11 in the hinge axis direction. Therefore, the sliding resistance when the annular member 11 rotates generates resistance. For example, the sliding resistance can be adjusted by the elastic force imparted to the potential energy portion 19 . As a result, the annular member 11 can be stopped (stationary) at any position while rotating about the hinge central axis A without the need for the step portion 16c and the convex portion 20e to be locked, and the sliding resistance generated by the imparted potential energy is used. . In this case, the user will not feel a sudden sense of resistance and can stop smoothly.

Furthermore, in this embodiment, the lower surface 11a of the annular member 11 is shaped to follow the shape of the top wall portion 9b of the cap body 9 that faces the lower surface 11a. Specifically, in this embodiment, the outer peripheral groove 9c of the top wall portion 9b facing the lower surface 11a of the annular member 11 has a concave curved surface shape, and the lower surface 11a of the annular member 11 has a concave shape imitating the outer peripheral groove 9c. Convex surface shape. In this case, the lower surface 11 a of the annular member 11 may be provided in close contact with the outer peripheral groove 9 c of the top wall portion 9 b of the cap body 9 . That is, when the annular member 11 is in the stored state, it can be satisfactorily placed in the peripheral groove 9c. Therefore, it is easier to stabilize the posture of the ring member 11 in the stored state. In addition, by bringing the annular member 11 into close contact with the outer peripheral groove 9c of the top wall portion 9b, an increase in the vertical size of the entire cap assembly 3A can be suppressed, making it easier to achieve compactness.

In addition, in this embodiment, the outer peripheral groove 9c of the cap body 9 has a polygonal shape, the annular member 11 also has a polygonal shape, and the inner peripheral portion of the annular member 11 and the inner peripheral portion of the outer peripheral groove 9c are fitted with each other. In this case, when the annular member 11 is in the stowed state, the circumferential rotation of the annular member 11 relative to the cap body 9 will be restricted. Therefore, in the stored state of the annular member 11, for example, when the user rotates the cap assembly 3A toward the release side T2 in the circumferential direction to detach it from the container body 2A, even if the user holds the annular member 11 with his or her hand, 11 rotate together, it can also prevent the potential energy imparting portion 19 of the hinge 12 from bearing an excessive load. Therefore, as mentioned above, the hinge 12 can maintain good function for a long period of time.

<Second Embodiment> Next, a cap assembly 3B according to a second embodiment of the present invention and a beverage container 1B provided with the assembly will be described with reference to FIGS. 10 to 22 . In this embodiment, the same structures as those in the above-described embodiment may be denoted by the same names, symbols, etc., and their descriptions may be omitted.

As shown in FIGS. 10 and 11 , the beverage container 1B of this embodiment includes a cap assembly 3B and a bottomed cylindrical container body 2B to which the cap assembly 3B is attached. The cap assembly 3B can be detachably installed on the mouth and neck 2c of the container body 2B by screwing. The cap assembly 3B is configured as a plug body for blocking the upper opening 2d of the container body 2B.

In the container body 2B of this embodiment, the mouth and neck portion 2c has a male thread portion 35. This male thread portion 35 is provided on the outer peripheral portion of the mouth and neck portion 2c.

The cap assembly 3B has a cap body 30 having a top cylindrical shape for closing the upper opening 2d of the container body 2B; a mouth forming member 36 having a liquid flow port 37 for communicating with the inside of the container body 2B, and Installed on the cap body 30; the mouth detachable mechanism 38 is used to detachably install the mouth forming member 36 on the cap body 30; the waterproof gasket 39 is used to seal the container body 2B and the mouth forming member 36 between; the cover body 31 is in the shape of a top cylinder to cover the liquid flow port 37 and is arranged on the upper side of the cap body 30 and the mouth forming member 36; the annular member 33 is arranged on the cover body 31 and is annular ; The first hinge (hinge) 32 enables the cover body 31 and the annular member 33 to be rotatably connected to the cap body 30 around the hinge central axis A; and the cover locking mechanism 43 is used to rotate the cap body 31 relative to the cap body 30 The cover body 30 fixes the cover body 31 in the closed position.

The mouth forming member 36 , the mouth detachment and assembly mechanism 38 and the waterproof gasket 39 can be considered as one of the constituent elements of the cap body 30 . Therefore, the cap body 30 has a mouth forming member 36 for providing a liquid flow port 37, a mouth detachment mechanism 38, and a waterproof gasket 39. That is, the cap body 30 has the liquid flow port 37 . In addition, the mouth forming member 36 may not be provided with the mouth detachable mechanism 38, but may be integrally formed with the cap body 30 in a non-detachable state.

In this embodiment, the longitudinal sectional view of the cap assembly 3B shown in FIG. 11 shows the closed state (occlusion position) of the cover 31 and the stored state of the annular member 33. The longitudinal sectional view of the cap assembly 3B shown in FIG. 12 shows the open state (open position) of the cover 31 and the open state of the annular member 33. The side view of the cap assembly 3B shown in FIG. 13 shows the closed state (occlusion position) of the cover 31 and the open state of the annular member 33.

In this embodiment, the closed state (occlusion position) of the cover 31 shown in FIG. 11 means that the lower end opening of the cover 31 faces the upper end peripheral portion of the cap body 30, and is the position of the cover 31. a gesture. In addition, the open state (open position) of the cover 31 shown in FIG. 12 means that the cover 31 in the closed position is opened (opened) by rotating around the hinge central axis A, and the user can pass through the liquid flow port 37 Drinking or pouring out the beverage in the container body 2B is another posture of the lid 31 . In the open position of the cover 31 , the lower opening of the cover 31 does not face the upper peripheral portion of the cap body 30 .

In addition, in this embodiment, the stored state of the ring-shaped member 33 shown in FIG. 11 means that the lower surface 33a of the ring-shaped member 33 faces the cover top wall portion 31b of the cover 31 described later, and the ring-shaped member 33 is a ring-shaped member. A gesture of 33. In addition, the open state of the ring member 33 shown in FIG. 13 means that the ring member 33 in the stored state is rotated around the hinge central axis A to be opened (opened), so that the ring member 33 can be held by the user. Holding is another posture of the ring member 33 (that is, the posture in which the ring member 33 is used as a handle). When the annular member 33 is in an open state, the lower surface 33 a of the annular member 33 and the top wall portion 31 b of the cover 31 do not face each other.

As shown in FIGS. 10 and 15 , in this embodiment, one side in the hinge axis direction corresponds to the circumferential tightening side T1 where the cap assembly 3B is screwed to the container body 2B, and the hinge axis direction The other side corresponds to the loosening side T2 in the circumferential direction.

The cap body 30 is made of heat-resistant resin such as polypropylene (PP). As shown in FIG. 11 , the cap body 30 has a peripheral wall part 30 a and a top wall part 30 c. The peripheral wall part 30 a is formed into a substantially cylindrical shape continuously with the main body part 2 b of the container body 2B. The top wall part 30 c and the upper end part of the peripheral wall part 30 a connected. Moreover, the top wall part 30c has the opening part 30b which penetrates the top wall part 30c in the up-down direction.

A female thread portion 34 is provided on the inner peripheral surface of the peripheral wall portion 30a. The female thread portion 34 is threadedly engaged with the male thread portion 35 of the mouth and neck portion 2c. Thereby, the cap body 30 can be removably mounted to the mouth and neck portion 2c of the container body 2B by screwing.

As shown in FIGS. 11 and 12 , a mouth forming member 36 for forming a drinking mouth or a pouring mouth (a drinking mouth in this embodiment) is detachably attached to the opening 30 b of the cap body 30 . That is, the cap body 30 is provided with the mouth-forming member 36 . The mouth forming member 36 is made of heat-resistant resin such as polypropylene (PP).

The port forming member 36 has a bottom wall part 36a in which the liquid flow port 37 is formed; a peripheral wall part 36b that stands upward from the periphery of the bottom wall part 36a and has a cylindrical shape; and a lower flange part 36c that extends from the bottom wall part 36a. The lower end portion expands radially outward; the upper flange portion (not shown) protrudes from the outer peripheral surface of the peripheral wall portion 36b to the left and right sides respectively in the front and rear direction; and the drinking mouth portion 36e is provided at the upper end of the peripheral wall portion 36b The opening edge is formed in a chamfered shape extending downward toward the rear side from the front end portion of the upper end opening edge. Since such a drinking mouth portion 36e is provided, the front end portion of the peripheral wall portion 36b protrudes higher than other portions.

A mouth detachable mechanism 38 is provided between the cap body 30 and the mouth forming member 36 so that the mouth forming member 36 can be detachably attached to the opening 30 b of the cap body 30 . The mouth detachable and attaching mechanism 38 can use, for example, the structure described in Japanese Patent No. 5312542, and will not be described in detail in this embodiment. In addition, the mouth-forming member 36 may also be designed to be freely detachable from the cap body 30 , or may be designed to be integrated with the cap body 30 .

The waterproof gasket 39 is detachably attached to the lower flange portion 36 c of the mouth forming member 36 . The waterproof gasket 39 is an annular sealing member for sealing between the overhanging portion 8 (container body 2B) and the mouth forming member 36 . The waterproof gasket 39 is made of rubber or elastic member such as heat-resistant silicone. The waterproof gasket 39 is fitted to the outer peripheral portion of the lower flange portion 36c.

When the waterproof gasket 39 is inserted into the inner side of the upper opening 2d of the container body 2B, the waterproof gasket 39 can be in tight contact with the overhanging portion 8 of the container body 2B over the entire circumference while elastically deforming. Therefore, it is possible to seal between the overhang 8 and the mouth forming member 36 .

The cover 31 is made of heat-resistant resin such as polypropylene (PP). The lid 31 is used to open and close the drinking port or pouring port of the opening forming member 36 , that is, to open and close the liquid flow port 37 . As shown in FIG. 11 , the cover body 31 is provided between the cap body 30 and the annular member 33 in the up-down direction.

The cover 31 is given potential energy in the direction in which the liquid flow port 37 of the port forming member 36 is opened, that is, in the opening direction, by the torsion spring (cover potential energy imparting part) 42 provided on the first hinge 32 . The cover body 31 is rotatably connected to the cap body 30 through the first hinge 32 in a state where potential energy is imparted in the opening direction around the hinge central axis A.

The cover body 31 has a cover peripheral wall portion 31a that is continuous with the peripheral wall portion 30a of the cap body 30 and is formed in a substantially cylindrical shape; a cover top wall portion 31b connected to the upper end of the cover peripheral wall portion 31a; and an inner wall portion 31c. It is protruding downward from the cover top wall part 31b and has a cylindrical shape.

A cover gasket 40 for closing the liquid flow port 37 of the port forming member 36 is provided inside the cover 31 . That is, the cover body 31 has the cover gasket 40 . The cover gasket 40 is a plug-shaped sealing member for sealing the liquid flow port 37 . The cover gasket 40 is made of an elastic member, and the same material as the above-mentioned waterproof gasket 39 can be used.

The cover gasket 40 has a substantially bottomed cylindrical shape, and can be detachably attached to the inner wall portion 31 c with the inner wall portion 31 c embedded therein. The bottom surface (lower surface) of the cover gasket 40 is formed in a dome shape protruding downward.

In the cap assembly 3B, when the cap body 31 closes the upper part of the cap body 30 , the cap gasket 40 is elastically deformed while being in a state of tight contact with the surroundings of the liquid flow port 37 . Therefore, the liquid flow port 37 of the port forming member 36 can be blocked.

When the cover gasket 40 is installed on the inner wall part 31c, it will elastically deform in a diameter-expanding manner and its inner side will be tightly embedded in the inner wall part 31c, so that it can be closely fixed to the inner wall part 31c. Therefore, in the closed position of the lid 31, even if the inside of the container body 2B becomes a negative pressure and a pulling force is generated on the lid gasket 40 toward the inside of the container body 2B, the lid gasket 40 can be suppressed from moving from the inner wall portion. 31c detachment. Therefore, when the lid 31 is brought into the open state, the liquid flow port 37 can be stably opened.

The cover top wall portion 31b has a recessed portion 31d that is recessed from the upper surface to the lower side. A covering member 41 for covering the inner wall portion 31c from above is attached to the recessed portion 31d. That is, the cover 31 has the covering member 41 . The cover member 41 is made of the same material as the cover 31 and is formed in a substantially disk shape.

The covering member 41 is not limited to being made of the same material as the cover 31, but may be made of a different material or color, or may be made of a transparent material. In addition, a three-dimensional structure may be provided on the upper part of the covering member 41, or the upper surface may be engraved. Thereby, the cap assembly 3B with better design can be realized.

As shown in FIGS. 11 and 13 , the cover top wall portion 31b has a tapered surface 31e. The tapered surface 31e is provided on the outer peripheral portion of the upper surface of the cover top wall portion 31b. The tapered surface 31e has a tapered surface shape that is inclined downward toward the outer side in the radial direction. The tapered surface 31e extends in the circumferential direction so as to surround the recessed portion 31d from the radially outer side, and forms a substantially C-shape opening at the rear side in a plan view.

As shown in FIG. 11 , the cover locking mechanism 43 fixes the cover 31 to the cap in a position where the cover 31 blocks the liquid flow port 37 , that is, the closed position of the cover 31 , against the urging force of the torsion spring 42 described below. Cover body 30.

Specifically, the cap locking mechanism 43 includes: a locking member 45, which is rotatably installed on the cap body 30 through the second hinge 44; and an annular stopper 46, which is rotatably installed on the cap body 30 through the second hinge 44. Cap body 30. In addition, the hinge central axis (not shown) of the second hinge 44 extends in the left-right direction.

The locking member 45 is rotatably supported by the second hinge 44 provided at the front end of the peripheral wall portion 30 a of the cap body 30 . The locking member 45 has a first extension part 45a extending upward from the second hinge 44 and a second extension part 45b extending downward from the second hinge 44.

The hook portion 47 protruding toward the rear side is provided at the tip portion of the first extension portion 45a (the upper end portion of the locking member 45). An elastic member (rubber member or spring member) 48 compressed in the front-rear direction is provided between the second extended portion 45b and the peripheral wall portion 30a. The elastic member 48 imparts potential energy to the second extension portion 45b toward the front side.

As shown in FIG. 10 , the annular stopper 46 is a member that is curved and extends in a substantially semicircular shape, and both ends thereof are rotatably supported on the second hinge 44 . Thereby, the annular stopper 46 can rotate in the up and down direction with the second hinge 44 as the center.

In addition, as shown in FIG. 11 , the cover locking mechanism 43 has a locked portion 49 and a stopper 50 . The locked portion 49 engages the hook portion 47 of the locking member 45 , and the stopped member 50 catches the annular stopper 46 . The locked portion 49 is formed by a claw portion protruding forward from the lower portion of the front end portion of the cover peripheral wall portion 31 a of the cover body 31 . The stopped member 50 has a shape that fits into the inner peripheral portion of the annular stopper 46 , and is formed by a wall portion protruding forward in a position around the locked portion (claw portion) 49 in the front end portion of the cover peripheral wall portion 31 a .

In the cover locking mechanism 43, when the cover body 31 blocks the upper part of the cap body 30, the hook part 47 of the locking member 45 is locked with the locked part 49, so that the cover body 31 can be kept closed of the upper part of the cap body 30. condition. From this state, the user resists the momentum imparted by the elastic member 48 and presses backward the second extension 45b of the locking member 45 to rotate the locking member 45 around the second hinge 44 and rotate the second hinge 44 . One extension part 45a is displaced forward, thereby releasing the locking state of the locked part 49 by the hook part 47. Therefore, due to the urging force of the torsion spring 42 in the first hinge 32, as shown in FIG. 12, the cover 31 can be rotated in the opening direction. In addition, when the cover 31 rotates in the opening direction, the annular member 33 also rotates in the opening direction together with the cover 31 .

As shown in Figure 11, in the cover locking mechanism 43, when the cover body 31 closes the upper part of the cap body 30, the annular stopper 46 is hung on the stopper 50, which prevents the cover body 31 from opening. The rotation of direction. Thereby, the cover locking mechanism 43 can prevent the cover 31 from being opened due to accidental (unintentional) operation of the locking member 45 or the like.

The annular member 33 is made of heat-resistant resin such as polypropylene (PP). As shown in FIG. 14 , the annular member 33 has an annular shape, but in this embodiment, it has a substantially annular plate shape. As shown in FIG. 11 , the annular member 33 is provided on the upper side of the cap body 30 and the cover body 31 . Specifically, in the stored state of the annular member 33 shown in FIG. 11 , the annular member 33 is provided on the cover top wall portion 31 b. More specifically, the annular member 33 is provided on the outer periphery of the cover top wall portion 31 b. On the top, that is, on the cone surface 31e.

The lower surface 33a of the annular member 33 is shaped to follow the shape of the lid top wall portion 31b of the lid body 31 that faces the lower surface 33a. That is, the lower surface 33a of the annular member 33 has a tapered shape consistent with the tapered shape of the tapered surface 31e, that is, it imitates the inverse tapered surface shape of the tapered surface 31e. Specifically, the lower surface 33a of the annular member 33 has a tapered shape extending downward toward the radially outer side.

The upper surface 33b of the annular member 33 has a tapered shape extending downward toward the radially outer side. Therefore, in the stored state of the annular member 33, for example, when the user rotates the cap assembly 3B in the circumferential direction to detach and attach the cap assembly 3B from the container body 2B, the user can easily grasp the cap assembly 3B and the annular member 33 with the palm of his hand. Component 11 can be rotated more easily.

The first hinge (hinge) 32 connects the rear portion of the cap body 30 and the lid body 31 in a relatively rotatable manner in the hinge circumferential direction. Furthermore, the first hinge 32 connects the rear portion of the cap body 30 and the annular member 33 so as to be relatively rotatable in the hinge circumferential direction. That is, the first hinge 32 connects the cap body 30 , the cover body 31 and the annular member 33 in a relatively rotatable manner around the central axis A of the hinge. The first hinge 32 is provided with a spring mechanism, and the spring mechanism includes a potential energy imparting part 60 and a sealing part 61 which will be described later. The first hinge 32 is centered on the hinge central axis A and extends along the hinge axis direction.

As shown in FIGS. 14 to 22 , the first hinge 32 includes cap bearing portions 52 and 53 , cap bearing portions 54 and 55 , an annular bearing portion 56 , a potential energy imparting portion (annular member potential energy imparting portion) 60 , and a sealing portion 60 . part 61, shaft cover 58, facing member 59, torsion spring (cover potential energy imparting part) 42, and hinge shaft 57. 15 shows a cross-section (longitudinal cross-section) of the first hinge 32 parallel to the central axis C of the cap assembly 3B. Specifically, FIG. 15 shows a longitudinal sectional view of the first hinge 32 including the central axis A of the hinge. In addition, FIG. 16 shows a cross-section (cross-section) of the first hinge 32 perpendicular to the central axis C of the cap assembly 3B. Specifically, FIG. 16 shows a cross-section of the first hinge 32 including the central axis A of the hinge. view. In addition, in the exploded perspective view of the cap assembly 3B shown in FIGS. 17 and 18 , the arrangement order of the constituent members is partially different from the arrangement relationship of the constituent members after assembly (assembly state).

One of the cap bearing parts 52, 53 and the annular bearing part 56 is provided at intervals along the hinge axis direction; and the other of the cap bearing parts 52, 53 and the annular bearing part 56 , one is provided, and is provided between one of the two. In this embodiment, among the cap bearing parts 52 and 53 and the annular bearing part 56, two cap bearing parts 52 and 53 are provided at intervals along the hinge axis direction, and the annular bearing part 56 is provided one on both sides. A cap is placed between the bearing parts 52 and 53.

As shown in FIGS. 17 , 18 , 20 and 21 , the cap bearing portions 52 and 53 protrude rearward and upward from the rear end portion of the top wall portion 30 c of the cap body 30 . That is, the cap bearing parts 52 and 53 are provided in the cap body 30 . The cap bearing portions 52 and 53 and the cap body 30 are integrated by a single member. In this embodiment, two cap bearing parts 52 and 53 are provided.

The two cap bearing parts 52 and 53 include a first cap bearing part 52 and a second cap bearing part 53 . The first cap bearing portion 52 is provided on one side of the two cap bearing portions 52 and 53 in the hinge axis direction. The second cap bearing portion 53 is provided on the other side in the hinge axis direction of the two cap bearing portions 52 and 53 .

The first cap bearing portion 52 has a substantially cylindrical shape extending along the hinge axis direction and extends along the hinge axis direction. As shown in Figures 15, 16, 20 and 21, the first cap bearing part 52 includes a receiving cavity 52b, a cap end surface 52e, a shaft hole 52a, a groove part 52c, and a shaft protrusion locking part 52d. .

The receiving hole 52b is in the shape of a bottomed circular hole centered on the central axis A of the hinge. The receiving hole portion 52b is opened at an end surface of the first cap bearing portion 52 facing one side in the hinge axis direction, and extends from the end surface to the other side in the hinge axis direction.

The cap end surface 52e is the end surface of the first cap bearing portion 52 facing the other side in the hinge axis direction. The cap end surface 52e is flat and expands in a direction perpendicular to the central axis A of the hinge.

The shaft hole 52a is in the shape of a circular hole extending along the hinge axis direction. The inner diameter of the shaft hole 52a is smaller than the receiving cavity 52b. One end of the shaft hole 52a in the hinge axis direction is opened to the bottom surface of the accommodation hole 52b. The end of the shaft hole 52a on the other side in the hinge axis direction is opened to the cap end surface 52e.

The groove portion 52c is recessed from the inner circumferential surface of the accommodation hole portion 52b outward in the hinge radial direction, and extends in a groove shape along the hinge axial direction. The groove portion 52c is provided over the entire length of the accommodating cavity portion 52b in the hinge axis direction. In this embodiment, the width dimension of the groove portion 52c in the hinge circumferential direction becomes smaller toward the outside in the hinge radial direction.

The shaft protrusion locking portion 52d is recessed from the inner circumferential surface of the shaft hole 52a to the outside in the hinge radial direction, and extends in a groove shape along the hinge axis direction. The shaft protrusion locking portion 52d is provided over the entire length of the shaft hole 52a in the hinge axis direction. One end of the shaft protrusion locking portion 52d in the hinge axis direction is opened to the bottom surface of the accommodation hole 52b. The end of the shaft protrusion locking portion 52d on the other side in the hinge axis direction is opened to the cap end surface 52e. In this embodiment, the width dimension of the shaft convex portion locking portion 52d in the hinge circumferential direction becomes larger toward the outside in the hinge radial direction.

As shown in FIGS. 15 to 18 , the second cap bearing portion 53 has a substantially annular plate shape centered on the hinge central axis A. The second cap bearing part 53 includes an inner surface 53b, an outer sliding surface 53c, and a shaft hole 53a.

The inner side surface 53b is provided on one end surface of the second cap bearing portion 53 facing the hinge axis direction. The inner surface 53b is flat and extends in a direction perpendicular to the central axis A of the hinge.

The outer sliding contact surface 53c is provided on the end surface of the second cap bearing portion 53 facing the other side in the hinge axis direction. The outer sliding contact surface 53c is flat and extends in a direction perpendicular to the central axis A of the hinge.

The shaft hole 53a penetrates the second cap bearing portion 53 in the hinge axis direction. The shaft hole 53a is a circular hole centered on the central axis A of the hinge. One end of the shaft hole 53a in the hinge axis direction is open to the inner surface 53b. The end of the shaft hole 53a on the other side in the hinge axis direction is open to the outer sliding surface 53c.

The cover bearing portions 54 and 55 protrude rearward from the cover peripheral wall portion 31 a of the cover body 31 . That is, the cover bearing parts 54 and 55 are provided in the cover body 31 . The cover bearing portions 54 and 55 are integrally formed with the cover body 31 by a single member. In this embodiment, two cover bearing portions 54 and 55 are provided spaced apart from each other in the hinge axis direction.

The two cover bearing parts 54 and 55 include a first cover bearing part 54 and a second cover bearing part 55 . The first cover bearing portion 54 is provided on one side of the two cover bearing portions 54 and 55 in the hinge axis direction. The first cap bearing part 54 is provided adjacent to one side of the first cap bearing part 52 in the hinge axis direction. The second cover bearing portion 55 is provided on the other side in the hinge axis direction of the two cover bearing portions 54 and 55 . The second cap bearing portion 55 is provided adjacent to the other side of the second cap bearing portion 53 in the hinge axis direction.

The first cover bearing portion 54 has a substantially cylindrical shape extending in the hinge axis direction. As shown in FIGS. 15 and 18 , the first cover bearing portion 54 includes a mounting recessed portion 54b, a rotational contact portion 54c, and a shaft hole 54a.

The mounting recessed portion 54b is concave or cut-shaped, and is recessed toward one side in the hinge axis direction from the end surface of the first cover bearing portion 54 facing the other side in the hinge axis direction. The bottom surface of the mounting recess 54b faces the other side in the hinge axis direction. The mounting recess 54b is flat and expands in a direction perpendicular to the hinge central axis A.

The rotation contact portion 54c protrudes from the bottom surface of the mounting recess 54b to the other side in the hinge axis direction. The rotation contact portion 54c is provided on the upper side of the mounting recessed portion 54b and has a rib shape extending in the front-rear direction. The rotation contact portion 54c is provided to cover the mounting recessed portion 54b from the upper side. The rotation contact portion 54c includes a curved portion extending in the hinge circumferential direction and a linear portion extending in the front-rear direction.

The shaft hole 54a has a substantially circular hole shape extending in the hinge axis direction. One end of the shaft hole 54a in the hinge axis direction is opened to an end surface of the first cover bearing portion 54 facing one of the hinge axis directions. The end of the shaft hole 54a on the other side in the hinge axis direction is opened to the bottom surface of the mounting recess 54b.

The second cover bearing portion 55 has a substantially cylindrical shape extending in the hinge axis direction. As shown in FIGS. 15 to 17 , the second cover bearing portion 55 includes an inner surface 55b and a shaft hole 55a.

The inner side surface 55b is provided on one end surface of the second cover bearing portion 55 facing the hinge axis direction. The inner surface 55b is flat and extends in a direction perpendicular to the central axis A of the hinge. The inner side surface 55b is in slidable contact with the outer sliding contact surface 53c of the second cap bearing part 53.

The shaft hole 55a has a substantially circular hole shape and penetrates the second cover bearing portion 55 in the hinge axis direction. One end of the shaft hole 55a in the hinge axis direction is open to the inner surface 55b. The end portion of the shaft hole 55a on the other side in the hinge axis direction is opened to the end surface of the second cover bearing portion 55 facing the other side in the hinge axis direction.

As shown in FIG. 11 , the annular bearing portion 56 protrudes rearward and downward from the rear end portion of the annular member 33 . That is, the annular bearing portion 56 is provided in the annular member 33 . The annular bearing portion 56 and the annular member 33 are formed integrally with a single member.

As shown in FIGS. 14 to 16 , the annular bearing portion 56 has a substantially cylindrical shape extending along the hinge axis direction. The annular bearing portion 56 is located substantially in the left-right direction center portion of the rear end portion of the annular member 33 . The annular bearing portion 56 is located substantially in the center of the first hinge 32 in the hinge axis direction.

The annular bearing portion 56 and the cap bearing portions 52 and 53 are provided adjacent to each other in the hinge axis direction. Specifically, the annular bearing portion 56 is provided adjacent to the other side of the first cap bearing portion 52 in the hinge axis direction, and furthermore, one of the annular bearing portion 56 and the second cap bearing portion 53 is located in the hinge axis direction. Set adjacent to each other on one side. That is, the annular bearing portion 56 is provided between the pair of cap bearing portions 52 and 53 in the hinge axis direction. That is, in this embodiment, the first hinge (hinge) 32 has: cap bearing portions 52 and 53 provided on the cap body 30; cap bearing portions 54 and 55 provided on the cap body 31; and annular shape. The bearing portion 56 is provided on the annular member 33 and is arranged in parallel with the cap bearing portions 52 and 53 and the cap bearing portions 54 and 55 in the hinge axis direction; and the hinge shaft 57 allows the cap bearing portions 52 and 53. The cap bearing parts 54, 55, and the annular bearing part 56 are supported by the cap bearing parts 52, 53, the cap bearing parts 54, 55, and the annular bearing part 56 in a manner that they can rotate freely relative to the hinge central axis A. .

As shown in FIGS. 15 , 16 , and 22 , the annular bearing portion 56 includes a storage recess 56 b, an annular end surface 56 c, and a shaft hole 56 a. That is, the first hinge 32 has the storage recess 56b.

In this embodiment, the storage recessed portion 56b is recessed in the annular bearing portion 56 and extends in the hinge axis direction. Specifically, the storage recess 56b is a bottomed circular hole centered on the central axis A of the hinge. It is opened at the end surface of the annular bearing portion 56 facing the other side in the direction of the hinge axis, and faces the hinge from this end. One side of the axis direction extends.

The annular end surface 56c is an end surface of the annular bearing portion 56 facing the front and middle side in the hinge axis direction. The outer peripheral portion of the annular end surface 56c is flat and expands in a direction perpendicular to the hinge central axis A. The cap end surface 52e of the first cap bearing portion (cap bearing portion) 52 facing the other side in the hinge axis direction and the annular end surface 56c of the annular bearing portion 56 facing one side of the hinge axis direction ( peripheral parts) are in sliding contact with each other.

Furthermore, the annular end surface 56c has a concave surface 56d, and the concave surface 56d is provided inward in the hinge radial direction from the outer peripheral portion of the annular end surface 56c. The concave surface 56d is formed to be recessed toward the other side in the hinge axis direction than the outer peripheral portion of the annular end surface 56c.

The shaft hole 56a is in the shape of a round hole extending in the hinge axis direction. The inner diameter of the shaft hole 56a is smaller than the accommodation recess 56b. One end of the shaft hole 56a in the hinge axis direction is opened in the concave surface 56d of the annular end surface 56c. The other end of the shaft hole 56a in the hinge axis direction is open to the bottom surface of the storage recess 56b.

The potential energy imparting part 60 is elastically deformable. As shown in FIGS. 15 to 18 , the potential energy imparting portion 60 of this embodiment is a metal compression spring that can elastically deform in the hinge axis direction. The potential energy imparting part 60 is accommodated in the storage recessed part 56b. The end portion of the potential energy imparting portion 60 on one side in the hinge axis direction is in contact with the bottom surface of the accommodation recessed portion 56 b facing the other side in the hinge axis direction. The other end of the potential energy imparting portion 60 in the hinge axis direction is in contact with one end surface of the sealing portion 61 facing the hinge axis direction (potential energy imparting portion contact surface 61 b to be described later).

The potential energy imparting portion 60 imparts potential energy to one side of the hinge axis direction to the second cap bearing portion (cap bearing portion) 53 and the annular bearing portion 56 through the sealing portion 61 . That is, the potential energy imparting part 60 imparts potential energy to the annular member 33 on one side of the cap body 30 in the hinge axis direction. In addition, the potential energy imparting portion 60 allows the annular member 33 to be displaced toward the other side in the hinge axis direction relative to the cap body 30 through elastic deformation.

The sealing portion 61 has a cylindrical shape centered on the hinge central axis A and extends along the hinge axis direction. The sealing portion 61 is provided on one side of the second cap bearing portion 53 in the hinge axis direction, and the sealing portion 61 is provided on the other side of the potential energy imparting portion 60 in the hinge axis direction. The sealing portion 61 is interposed between the second cap bearing portion 53 and the potential energy imparting portion 60 in the hinge axis direction. At least a part of the sealing portion 61 is inserted into the storage recessed portion 56b. Thereby, the sealing part 61 seals the potential energy imparting part 60 in the storage recessed part 56b. The enclosed portion 61 is exposed to the outside between the second cap bearing portion 53 and the annular bearing portion 56 , except for the portion inserted into the storage recessed portion 56 b.

In this embodiment, at least part of the sealing portion 61 (one end in the hinge axis direction) is inserted into the storage recess 56b, and the sealing portion 61 does not completely separate from the storage recess 56b. Therefore, the sealing portion 61 is sealed inside the storage recess 56b. The potential energy imparting part 60 is not exposed to the outside. Therefore, the potential energy imparting portion 60 is not visible in appearance, and good appearance can be maintained.

The enclosed part 61 may be suitably made of a material different from that of the second cap bearing part 53 . For example, polyoxymethylene (POM) or acrylonitrile-butadiene, which has better wear resistance than the second cap bearing part 53 , may be used. -Styrene (ABS), etc.

The sealing part 61 has a potential energy imparting part contact surface 61b, an outer contact surface 61c, and a shaft hole 61a.

The potential energy imparting portion contact surface 61b is provided on an end surface of the sealing portion 61 facing one side in the hinge axis direction. The potential energy imparting portion contact surface 61 b is in contact with the other end of the potential energy imparting portion 60 in the hinge axis direction.

The outer contact surface 61c is provided on one end surface of the sealing portion 61 facing the hinge axis direction. The outer contact surface 61c is in slidable contact with the inner side surface 53b of the second cap bearing part 53.

The shaft hole 61a penetrates the enclosed portion 61 in the hinge axis direction. One end of the shaft hole 61a facing the hinge axis direction is open to the potential energy imparting portion contact surface 61b. The other end of the shaft hole 61a facing the hinge axis direction is open to the outer abutment surface 61c. The shaft hole 61a extends along the hinge axis direction and is in the shape of a circular hole.

In the cap assembly 3B of this embodiment, the durability of the first hinge 32 can be improved by configuring the sealing portion 61 with excellent wear resistance and the second cap bearing portion 53 separately and independently. In addition, by configuring the sealing portion 61 and the second cap bearing portion 53 independently, the formability of the cap body 30 can be improved, and dimensional management can be made easier. However, the second cap bearing portion 53 may be formed separately from the sealing portion 61 unless the influence on the formability and size is considered. That is, for example, the second cap bearing portion 53 and the sealing portion 61 may be formed integrally.

As shown in FIGS. 15 , 16 and 19 , the shaft cover 58 has a substantially multi-stage cylindrical shape extending in the direction of the hinge axis. The shaft cover 58 is inserted into the first cap bearing part 52 , the annular bearing part 56 , the potential energy imparting part 60 , the sealing part 61 and the second cap bearing part 53 from one side in the hinge axis direction.

The shaft cover 58 may be suitably made of a material different from that of the cap bearing parts 52 and 53 , for example, polyoxymethylene (POM) or acrylonitrile-butadiene-styrene (ABS), which has better wear resistance than the cap bearing parts. 52, 53 stronger materials.

The shaft cover 58 has a small diameter cylinder part 58b, a large diameter cylinder part 58c, a shaft hole 58a, an overhanging protrusion part 58d, and a shaft convex part 58e.

The small-diameter cylindrical portion 58b has a cylindrical shape centered on the hinge central axis A and extends in the hinge axis direction. The small diameter cylindrical part 58b is inserted into the shaft hole 52a of the first cap bearing part 52, the shaft hole 56a and the accommodation recessed part 56b of the annular bearing part 56, the potential energy imparting part 60, the shaft hole 61a of the sealing part 61, and the second The respective insides of the shaft holes 53a of the cap bearing portion 53 are covered. In addition, the end surface of the small-diameter cylindrical portion 58 b facing the other side in the hinge axis direction is in sliding contact with the inner surface 55 b of the second cover bearing portion 55 .

The large-diameter cylindrical portion 58c is provided on one side of the small-diameter cylindrical portion 58b in the hinge axis direction. The large-diameter cylindrical part 58c has a substantially cylindrical shape with a larger diameter than the small-diameter cylindrical part 58b, and is connected to one end of the small-diameter cylindrical part 58b in the hinge axis direction. Specifically, the large-diameter cylindrical portion 58c has a substantially bottomed cylindrical shape, and has an opening on one end surface of the shaft cover 58 facing the hinge axis direction. The large-diameter cylindrical portion 58c is provided in the accommodation cavity portion 52b of the first cap bearing portion 52.

The shaft hole 58a penetrates the shaft cover 58 in the hinge axis direction. The shaft hole 58a is in the shape of a circular hole centered on the central axis A of the hinge. One end of the shaft hole 58a in the hinge axis direction is opened in the bottom wall of the large-diameter cylinder portion 58c. The other end portion in the hinge axis direction of the shaft hole 58 a is opened to face the other end surface in the hinge axis direction of the small diameter cylindrical portion 58 b.

The overhanging protrusion 58d protrudes outward in the hinge radial direction from the outer circumferential surface of the large-diameter tube portion 58c and has a rib shape extending in the hinge axis direction. In this embodiment, the width of the overhanging protrusion 58d in the hinge circumferential direction becomes smaller toward the outside in the hinge radial direction. The overhanging protrusion 58d is locked in the groove portion 52c of the first cap bearing portion 52.

The axial convex portion 58e protrudes outward in the hinge radial direction from the outer peripheral surface of the small-diameter cylindrical portion 58b and has a rib shape extending in the hinge axial direction. The axial protrusion 58e is provided at one end of the small diameter cylinder portion 58b in the hinge axis direction, and is connected to the other end of the overhanging protrusion 58d in the hinge axis direction. In this embodiment, the width of the shaft convex portion 58e in the hinge circumferential direction becomes larger toward the outside in the hinge radial direction. The shaft convex portion 58e is locked to the shaft convex portion locking portion 52d of the first cap bearing portion 52.

The overhanging protrusion 58d is engaged with the groove portion 52c, and the shaft convex portion 58e is engaged with the shaft convex portion locking portion 52d. Therefore, the shaft cover 58 cannot move around the hinge relative to the first cap bearing portion 52. direction rotation. That is, the shaft cover 58 is attached to the cap body 30 so that rotation in the hinge circumferential direction is restricted.

As shown in FIGS. 15 to 18 , the facing member 59 is a substantially cylindrical member centered on the hinge central axis A. Specifically, the facing member 59 has an opening at the other end in the hinge axis direction and has a substantially cylindrical shape. The facing member 59 is provided adjacent to one side of the shaft cover 58 in the hinge axis direction. The facing member 59 is provided throughout the inside of the receiving cavity 52 b of the first cap bearing part 52 and the mounting recess 54 b of the first cap bearing part 54 . The bottom wall portion of the facing member 59 is in contact with the bottom surface of the mounting recess 54b. The facing member 59 and the large-diameter cylindrical portion 58c of the shaft cover 58 are adjacently provided so that their openings face each other in the hinge axis direction.

The facing member 59 may be made of a material different from that of the first cover bearing part 54 , for example, polyoxymethylene (POM) or acrylonitrile-butyl-styrene-styrene (ABS), which is more wear-resistant than the first cover bearing part 54 Consumable materials.

In the cap assembly 3B of this embodiment, the durability of the first hinge 32 can be improved by configuring the facing member 59 with excellent wear resistance and the first cap bearing portion 54 independently. In addition, the first cover bearing portion 54 does not necessarily have to have the facing member 59 independently configured. For example, the facing member 59 may have an integrated structure, or a wear-resistant coating may be applied to its surface.

The facing member 59 has a flange portion 59b, a cover pressing portion 59c, and a shaft hole 59a.

The flange portion 59 b is provided at one end of the facing member 59 in the hinge axis direction, and has a flange shape that overhangs outward in the hinge radial direction from the outer peripheral surface of the facing member 59 . The surface of the flange portion 59b facing one side in the hinge axis direction is in contact with the bottom surface of the mounting recessed portion 54b. The other surface of the flange portion 59 b facing the hinge axis direction is in slidable contact with one end surface of the first cap bearing portion 52 facing the hinge axis direction.

The cover pressing portion 59 c is provided to cover an end portion on one side facing the hinge axis direction of the member 59 . The cover pressing part 59c is formed in a planar shape such that a part of the flange part 59b in the hinge circumferential direction is notched. The cover pressing part 59c contacts the rotation contact part 54c of the first cover bearing part 54 from the lower side.

The shaft hole 59a penetrates the bottom wall portion of the facing member 59 in the hinge axis direction. The shaft hole 59a is in the shape of a round hole centered on the central axis A of the hinge.

The torsion spring 42 is provided throughout the large-diameter cylindrical portion 58 c of the shaft cover 58 and the facing member 59 . The torsion spring 42 is a metal coil spring centered on the central axis A of the hinge. As shown in FIG. 18 , the torsion spring 42 has: a winding portion 42a, which is wound in a coil shape; one of the protruding ends 42b extends from one end of the winding portion 42a in the hinge axis direction; and another protruding end 42b. One protruding end 42c extends from the other end in the hinge axis direction of the winding portion 42a.

Although not particularly shown in the figure, one of the protruding ends 42b of the torsion spring 42 is engaged with the peripheral wall portion of the facing member 59, and the other protruding end 42c is engaged with the peripheral wall portion of the large-diameter cylinder portion 58c, and in this state Set inside the first hinge 32.

With the above configuration, when the user rotates the cover 31 from the open position to the opposite direction of the opening direction, that is, the closing direction, because the rotation contact portion 54c of the first cover bearing portion 54 comes into contact with the cover pressing portion 59c, Therefore, the facing member 59 will rotate in the closing direction together with the cover 31 . Thereby, the opening angle between one of the protruding ends 42b and the other protruding end 42c of the torsion spring 42 elastically deforms in the narrowing direction, and its rebound force (recovery deformation force) can push the cap body 30 toward the The opening direction imparts potential energy to the cover 31 . In addition, since the cover 31 is imparted with potential energy in the opening direction, the annular member 33 is also indirectly imparted with potential energy in the opening direction through the cover 31 .

When the cover 31 is rotated in the opening and closing directions, the cover 31 and the facing member 59 will rotate in the hinge circumferential direction, but the cap body 30 and the shaft cover 58 will not rotate in the hinge circumferential direction. direction rotation. Therefore, the first cap bearing part 54 slides with the first cap bearing part 52, the facing member 59 slides with the first cap bearing part 52 and the shaft cover 58, and the second cap bearing part 55 slides with the second cap bearing part 54. The bearing part 53 and the shaft cover 58 slide.

As shown in FIGS. 15 and 16 , the hinge shaft 57 has a cylindrical shape centered on the hinge central axis A and extends in the hinge axis direction. The hinge shaft 57 is made of metal. The hinge shaft 57 is provided to penetrate the first cap bearing part 54 , the facing member 59 , the torsion spring 42 , the first cap bearing part 52 , the shaft cover 58 , the annular bearing part 56 , and the potential energy imparting part in the hinge axis direction. 60. Enclosed portion 61, second cap bearing portion 53, and second cap bearing portion 55. In addition, through the shaft cover 58 , the hinge shaft 57 bears and supports the cap bearing portions 52 and 53 and the annular bearing portion 56 so as to be relatively rotatable around the hinge central axis A.

In addition, as shown in FIGS. 16 , 21 and 22 , as the click mechanism of the first hinge 32 of this embodiment (that is, the storage state maintaining mechanism 22 ), one of the cap end surface 52 e and the annular end surface 56 c One has a step portion 63, while the other has a convex portion 62, and the convex portion 62 can climb over the step portion 63 around the hinge central axis A against the potential energy imparted by the potential energy imparting portion 60.

Specifically, in this embodiment, the cap end surface 52e has a protruding step portion 63 that protrudes from the cap end surface 52e to the other side in the hinge axis direction. Furthermore, the annular end surface 56c has a protruding convex portion 62 protruding from the concave surface 56d to one side in the hinge axis direction.

The cap assembly 3B of this embodiment is provided with a stored state holding mechanism 22 that can maintain the posture of the ring member 33 in the stored state. Furthermore, the stored state holding mechanism 22 has a convex portion (locked portion) 62 provided on the annular member 33 and a step portion (locking portion) latched to the convex portion 62 of the annular member 33 in the stored state. 63. In this embodiment, the storage state maintaining mechanism 22 is provided in the front-rear direction, closer to the first hinge (hinge) 32 side (that is, the rear side) than the central axis C of the cap. The convex portion 62 can climb over the step portion 63 in the hinge circumferential direction when the annular member 33 rotates around the hinge central axis A in the opening direction with a torque exceeding a predetermined level due to user operation or the like.

Specifically, in the process of converting the annular member 33 from the stored state to the open state, the convex portion 62 and the annular member 33 will rotate around the hinge central axis A, and the annular member 33 is By rotating with a torque greater than a predetermined amount and resisting the potential energy imparting ability of the potential energy imparting portion 60 , the protruding portion 62 can push the annular bearing portion 56 on which it is mounted to the other side in the direction of the hinge axis. Climb the step portion 63 around the central axis A of the hinge.

That is, in the process of converting the annular member 33 from the stored state to the open state, the convex portion 62 can climb the step portion 63 in the hinge circumferential direction against the potential energy imparting force of the potential energy imparting portion 60 . Specifically, in the above process, by bringing the convex portion 62 into contact with the step portion 63, the annular bearing portion 56 (annular member 33) generates a force to displace to the other side in the hinge axis direction, thereby imparting potential energy. The portion 60 undergoes elastic deformation. Due to the elastic deformation of the potential energy imparting part 60 , the annular bearing part 56 is displaced to the other side in the hinge axis direction, and the convex part 62 climbs the step part 63 in the hinge circumferential direction.

On the other hand, contrary to the above, in the process of returning the annular member 33 from the open state to the stored state, the annular member 33 rotates forward, and when it is about to become the stored state, it is climbed by the convex portion 62 The step portion 63 allows the storage state holding mechanism 22 to maintain the annular member 33 in the storage state again. During this climbing process, the user can get a click feeling and feel that the operation has been completed.

It should be noted that when the annular member 33 in the stored state is rotated toward the rear side (opening direction), operation resistance will be generated when the convex portion 62 climbs over the step portion 63 to the opposite side in the circumferential direction of the hinge, so it can be prevented. Accidental rotation toward the rear. In addition, when the user rotates it toward the rear side, due to the operation resistance during climbing, the user can get a click feeling and can feel that the rotation operation has started.

In this embodiment, although the convex portion 62 climbs over the step portion 63 when the annular member 33 is about to enter the stored state, the present invention is not limited to this, and the respective positions of the convex portion 62 and the step portion 63 can also be adjusted. Freely set the climbing position. For example, in the reference example of this embodiment, the annular member 33 may be configured to allow the convex portion 62 to climb over the step portion 63 just before reaching the limit when the annular member 33 is rotated backward in the open state. In this case, since the convex portion 62 and the step portion 63 are locked, the annular member 33 is maintained in an open state. Therefore, when the annular member 33 is in an open state, the convex portion 62 and the step portion 63 serve as an open state maintaining mechanism for maintaining the posture of the annular member 33 .

Another example is a structure in which the convex portion 62 climbs over the step portion 63 in a position where the annular member 33 stands upward in an open state. In this case, the user can get a click feeling due to the climbing operation resistance and can feel that the ring member 33 has stood up.

In addition, in the present embodiment, the potential energy imparting portion 60 imparts potential energy to the annular member 33 toward the hinge axis direction to the cap body 30 . Therefore, the sliding resistance of the annular member 33 during rotation is generated. For example, the sliding resistance can be adjusted by the elastic force imparted to the potential energy portion 60 to stop the annular member 33 in an upwardly erect position. As a result, the user can place the beverage container 1B with the ring member 33 standing upward, thereby quickly hanging the user's finger on the ring member 33 and carrying it. In addition, by the above-mentioned sliding resistance, the ring-shaped member 33 can be stopped not only in the upward standing position, but also can be stopped (stationary) in any position rotating around the hinge central axis A. .

Furthermore, in the stored state maintaining mechanism 22 of this embodiment, the convex portion 62 has a structure that can climb over the step portion 63. However, the stored state maintaining mechanism 21 of the first embodiment can also be referred to so that the convex portion 62 does not need to be climbed. Instead of riding on the step portion 63, the user rides on the step portion 63. For example, one of the convex portion 62 or the stepped portion 63 may have a concave shape relative to the other. If the step portion 63 is described as having a concave shape, the concave step portion will be represented as 63'.

In this case, from the state in which the convex portion 62 is accommodated in the step portion 63', the annular member 33 is rotated around the hinge central axis A, whereby the convex portion 62 rotates together with the annular member 33. When the annular member 33 is rotated with a torque exceeding a predetermined amount, the annular bearing portion 56 (the annular member 33 ) is pressed toward the other side in the hinge axis direction against the potential energy imparting force of the potential energy imparting portion 60 , and Make it ride on the upper differential portion 63' around the central axis A of the hinge. After riding, the riding state is maintained and the annular member 33 is rotated around the hinge central axis A, so that the convex portion 62 can contact the cap end surface 52e in a sliding manner.

Assume that the potential energy imparting part 60 in this embodiment does not impart potential energy. If this is the structure, the convex part 62 rides on the upper step part 63' and is elastically deformed by being pressed against the cap end surface 52e. The sliding resistance is adjusted according to the degree, friction caused by the material or shape, etc., so that the ring member 33 can stop (stationary) at any position during the rotation around the hinge central axis A. That is, when one of them slides against the other while maintaining the riding state, high sliding resistance can be set in most of the sliding stroke, so that the ring member 33 can stop around the hinge central axis. A Any position during the rotation. This is the same as the case where the potential energy imparting part 19 is not provided in the first embodiment.

In addition, contrary to the above, the process of returning the convex part 62 to the state of being accommodated in the step part 63', starting from riding on the step part 63' around the hinge central axis A and maintaining this state, will be described. In this case, the annular member 33 is rotated around the hinge central axis A in the opposite direction to the above, whereby the convex portion 62 rotates in the hinge circumferential direction relative to the step portion 63', and becomes the other direction. When they are in opposing positions in the hinge axis direction, the potential energy imparting portion 60 resumes its deformation, causing the convex portion 62 to move toward one side of the hinge axis direction, and the convex portion 62 is inserted (locked) into the step portion again. 63'. Even if there is no potential energy imparted by the potential energy imparting portion 60 in this embodiment, the sliding resistance is adjusted by the degree of elastic deformation caused by the convex portion 62 pressing against the cap end surface 52e, friction caused by the material or shape, etc., so that the sliding resistance can be adjusted. The convex portion 62 returns to the state of being accommodated in the step portion 63'. In addition, as described above, even if the convex portion 62 and the step portion 63 are interchanged and the convex portion 62 is concave relative to the step portion 63, the same effect can be achieved.

On the other hand, taking the convex portion 62 and the step portion 63 in this embodiment as an example, a description will be given of a case where the convex shapes climb over each other and the cap end surface 52e and the annular end surface 56c slide. In this case, the state of the annular member 33 is not only maintained by the two convex portions 62 and the step portion 63, but when the rotation reaches the limit state of the closing direction or the opening direction, the state of the ring member 33 is maintained before each rotation. The position before the limit is provided with a convex portion 62 and a stepped portion 63 to function as a stored state maintaining mechanism or an open state maintaining mechanism. In other words, when there is a position where the annular member 33 cannot rotate further, when trying to rotate the annular member 33 to get out of this state, the sliding resistance will temporarily increase and climbing will be required. Once climbed, the frictional resistance is reduced, so the annular member 33 can be rotated smoothly. In other words, in the case of one party climbing over the other, it is possible to set a temporary high sliding resistance while climbing.

Therefore, if there is no mechanism for providing sliding resistance, for example, the potential energy imparting portion 60 causes the annular member 33 to impart potential ability to the cap body 30 in the direction of the hinge axis, and only relies on climbing between a set of convex shapes. , it is difficult to stop (stationary) the annular member 33 in the upward standing position or at any position during rotation (that is, a position with low sliding resistance). Of course, by preparing a shape structure in which two sets of convex structures climb over each other and creating a pseudo-concave structure in between, the structure can be stopped at any position.

In addition, when the annular member 33 is stopped at an arbitrary position while rotating about the hinge central axis A by the sliding resistance of the potential energy imparting portion 60, the direction in which the potential energy is imparted is either one of the hinge axis directions. Tightening side T1, or loosening side T2 on the other side in the direction of the hinge axis, any direction does not matter.

In this embodiment, the first hinge 32 has a click mechanism including a step portion 63 and a convex portion 62 as the storage state maintaining mechanism 22. The click mechanism is opened when the annular member 33 is opened around the hinge central axis A. Provides a clicky feel when turned in either direction or closed. In addition, in this embodiment, the annular member 33 can be stopped (stationary) at any position while rotating around the hinge central axis A by the sliding resistance provided by the potential energy portion 60 .

According to the cap assembly 3B and the beverage container 1B of this embodiment described above, the same functions and effects as those of the above-described embodiment can be obtained. Specifically, as in this embodiment, the structure of the lid 31 for the liquid flow port 37 of the opening and closing opening forming member 36 and the lid lock mechanism 43 for fixing the lid 31 in the closed position are the same as those of the first embodiment. Similarly, the annular member 33 can be set to an open state or a stored state, and the posture of the annular member 33 can be appropriately selected, which is highly convenient. In addition, since the stored state holding mechanism 22 is provided to maintain the annular member 33 in the stored state, the annular member 33 in the stored state can be prevented from accidentally entering the open state, making it easy to use and has good operability. In addition, the screwed state of the cap assembly 3B and the container body 2B can be well maintained.

Specifically, in the first hinge 32 of this embodiment, the direction in which potential energy is imparted to the annular bearing portion 56 (annular member 33 ) by the potential energy imparting portion 60 is one side of the hinge axis direction, that is, annular The member 33 is given potential energy toward the fastening side T1 in the substantially circumferential direction. In addition, by pushing the annular member 33 against the potential energy imparting force of the potential energy imparting portion 60 , the annular bearing portion 56 slides toward the other side in the hinge axis direction. The direction of this sliding movement is generally the release side T2 in the circumferential direction. That is, the rotational force applied to the release side T2 in the circumferential direction of the annular member 33 can be absorbed by the elastic deformation of the potential energy imparting portion 60 to prevent the rotational force from being transmitted to the cap body 30 .

Specifically, in the past, for example, when a user carried a beverage container with his or her fingers passing through the ring member 33 , the cap assembly may loosen in the circumferential direction due to factors such as the holding method or the weight of the container body. Lateral T2 rotation. In addition, similarly when the beverage container is turned upside down (with the cap assembly facing downward in the vertical direction) and dropped, the cap assembly may rotate toward the circumferential release side T2 depending on the impact pattern of the dropped surface. In these cases, if the cap assembly is rotated toward the circumferential release side T2, the seal between the overhang and the mouth-forming member caused by the waterproof gasket is released, so that the beverage (contents) contained in the container body substances) may leak out of the container.

On the other hand, in this embodiment, the rotational force of the annular member 33 toward the loosening side T2 in the circumferential direction is absorbed by the elastic deformation of the potential energy imparting portion 60, so the cap body 30 does not rotate. Therefore, the screw connection between the cap assembly 3B and the container body 2B will not be loosened, and the beverage contained in the container body 2B will not leak out. In addition, when you want to store a drink in the container body 2B, or when you want to disassemble the container body 2B and the cap assembly 3B for cleaning, grasp the entire cap assembly 3B, or grasp the peripheral wall portion 30a of the cap body 30, etc. , the cap assembly 3B is rotated toward the loosening side T2 in the circumferential direction, and the user can remove the cap assembly 3B without being affected by the potential energy imparted by the potential energy imparting portion 60 . In addition, of course, the same is true for rotating the cap assembly 3B toward the tightening side T1 in the circumferential direction. This can be done without any problem by grasping the entire cap assembly 3B or the peripheral wall portion 30 a of the cap body 30 . conduct.

In this embodiment, the cap body 30 side is provided with two cap bearing parts 52, 53, the cap body 31 side is provided with two cap bearing parts 54, 55, and the annular member 33 side is provided with one ring. The structure of the bearing portion 56 is similar to that of the bearing portion 56, but these numbers and arrangements can be replaced with each other and the same effect can be achieved. That is, for example, one cap bearing portion is provided on the cap body 30 side, and two rings are provided on the annular member 33 side so as to sandwich the one cap bearing portion from both sides in the hinge axis direction. Shape bearing part can also be used. The cover body 31 side may be further provided with a structure in which two cover bearing parts are sandwiched between the two annular bearing parts from both outer sides in the hinge axis direction (see FIG. 32 of the fourth embodiment). . Alternatively, the cap body 30 side is provided with one cap bearing portion, and the cap body 31 side is provided with two cap bearing portions so as to sandwich the one cap bearing portion from both sides in the hinge axis direction, and the cap body 31 side is provided with two cap bearing portions. The annular member 33 side may be provided with a structure in which two annular bearing portions are sandwiched between the two cover bearing portions from both outer sides in the hinge axis direction (see Figure 37 of the fifth embodiment). .

Alternatively, the cover body 31 side is provided with one cover bearing portion, and the annular member 33 side is provided with two annular bearing portions so as to sandwich the one cover bearing portion from both sides in the hinge axis direction, and the cap body 33 side is provided with two annular bearing portions so as to sandwich the one cover bearing portion from both sides in the hinge axis direction. The cap body 30 side may further have a structure in which two cap bearing parts are sandwiched between the two annular bearing parts from both outer sides in the hinge axis direction.

Alternatively, the annular member 33 side is provided with an annular bearing portion and is clamped from both sides in the direction of the hinge axis, the cover body 31 side is provided with two cover bearing portions, and the cap body 30 side can also be provided with two The structure of the cap bearing part.

To sum up, the arrangement order of the cap bearing part, the cap bearing part and the annular bearing part in the direction of the hinge axis can be appropriately selected. What is important is that the fastening side T1 of the annular bearing part in the direction of the hinge axis is relatively close to the cap. The cap bearing portion or cap bearing portion imparts potential energy.

In addition, in this embodiment, since the first hinge 32 has the storage state retaining mechanism 22 as a click mechanism, when the ring member 33 is in the storage state, when the ring member 33 is rotated in the opening direction, By the convex part 62 climbing over the step part 63, a click feeling can be obtained, and it can be tactilely recognized that the rotation operation has started. In addition, when the annular member 33 in the stored state rotates in the opening direction, resistance due to the potential force is generated when the convex portion 62 climbs the step portion 63, so that the annular member 33 can be suppressed from accidentally rotating in the opening direction. .

In addition, in this embodiment, the shape of the lower surface 33a of the annular member 33 is similar to the shape of the lid top wall portion 31b of the lid body 31 facing it. Specifically, in this embodiment, the outer peripheral portion of the lid top wall portion 31b facing the lower surface 33a of the annular member 33 is a tapered surface 31e, and the lower surface 33a of the annular member 33 is an inverted taper imitating the tapered surface 31e. Face shape.

In this case, the lower surface 33a of the annular member 33 may be provided in close contact with the outer peripheral portion of the cover top wall portion 31b of the cover body 31. That is, when the annular member 33 is set to the stored state, it can be well stored on the cover 31 . Therefore, the posture of the ring member 33 in the stored state can be more easily stabilized. In addition, by tightly joining the annular member 33 to the outer peripheral portion of the cap top wall portion 31b, an increase in the vertical size of the entire cap assembly 3B can be suppressed, making it easier to achieve compactness. Furthermore, in this case, by placing the annular member 33 in the stowed state, the aesthetic appearance of the cap assembly 3B can be optimized.

[Third Embodiment] Next, a cap assembly 3C according to a third embodiment of the present invention and a beverage container 1C having the cap assembly 3C will be described with reference to FIGS. 23 to 27 . In this embodiment, for the same structures as those in the above-described embodiment, the same names, symbols, etc. may be used and their descriptions may be omitted.

As shown in FIGS. 23 and 24 , the beverage container 1C of this embodiment includes a cap assembly 3C and a bottomed cylindrical container body 2C to which the cap assembly 3C is attached. The cap assembly 3C can be detachably installed on the mouth and neck 2c of the container body 2C with an upper opening by screwing.

In this embodiment, the longitudinal sectional view of the cap assembly 3C shown in FIG. 24 shows the closed state (occlusion position) of the cover 31 and the stored state of the annular member 33 . The perspective view of the cap assembly 3C shown in FIG. 25 shows the closed state (occlusion position) of the cover 31 and the open state of the annular member 33. The perspective view of the cap assembly 3C shown in FIG. 26 shows the open state (open position) of the cover 31 and the stored state of the annular member 33.

As shown in FIGS. 23 to 25 , the cover 31 of the cap assembly 3C has a concave or groove-shaped storage recess recessed from the top wall 31 b of the cover 31 . In this embodiment, this storage recess is called It is the outer peripheral groove 31f. That is, the cover top wall part 31b of the cover body 31 has the outer peripheral groove (storage recessed part) 31f.

The outer peripheral groove 31f is provided in the outer peripheral part of the cover top wall part 31b. The outer peripheral groove 31f is recessed lower than the portion of the cover top wall portion 31b other than the outer peripheral groove 31f and extends in the circumferential direction. The outer peripheral groove 31f has an annular shape centered on the central axis C. The outer peripheral groove 31f has a substantially polygonal shape in a plan view, and in this embodiment, has a substantially rectangular shape. However, the invention is not limited to this. Although not particularly shown in the drawings, the outer peripheral groove 31f may be substantially circular in plan view. The outer peripheral groove 31f is located at the upper end peripheral portion of the cover 31 and opens upward and radially outward.

As shown in FIG. 24 , in a longitudinal cross-sectional view parallel to the central axis C, the wall surface of the outer peripheral groove 31f (inner wall of the groove) extends downward toward the radially outer side. Specifically, in this embodiment, the outer peripheral groove 31f has a concave curve shape in this longitudinal cross-sectional view. That is, the wall surface of the outer peripheral groove 31f has a concave curved surface shape. However, it is not limited to this, and (the wall surface of) the outer peripheral groove 31f may have a side wall facing radially outward and a substantially planar bottom wall facing upward (see, for example, FIG. 36 ).

The annular member 33 is provided on the upper side of the cap body 30 and the upper side of the cover body 31 . In this embodiment, the annular member 33 has a substantially polygonal shape, specifically, a substantially tetragonal shape. However, it is not limited to this. Although not particularly shown in the drawings, the annular member 33 may also be substantially circular.

In the stored state of the annular member 33 shown in FIG. 24 , the annular member 33 is provided on the cover top wall portion 31 b, more specifically, on the outer peripheral portion of the cover top wall portion 31 b, that is, the outer peripheral groove 31 f superior. In the stored state of the annular member 33, at least a part of the annular member 33 is accommodated in the outer peripheral groove (storage recess) 31f.

The lower surface 33a of the annular member 33 has an annular shape centered on the central axis C. The lower surface 33a of the annular member 33 is shaped to follow the shape of the lid top wall portion 31b of the lid body 31 that faces the lower surface 33a. That is, the lower surface 33a of the annular member 33 is formed into a shape following the groove of the outer peripheral groove 31f facing the lower surface 33a. Specifically, in the longitudinal sectional view shown in FIG. 24 , the lower surface 33 a of the annular member 33 extends downward toward the radially outer side. In this embodiment, the lower surface 33a of the annular member 33 forms a convex curve shape in this longitudinal cross-sectional view. That is, the lower surface 33a of the annular member 33 has a convex curved surface shape. However, it is not limited to this, and the annular member 33 may have a substantially planar lower surface facing downward and an inner side facing radially inward (see, for example, FIG. 36 ).

As shown in FIG. 27 , the outer peripheral surface 33 c of the annular member 33 extends radially inward toward the upper side. That is, the outer peripheral surface 33c of the annular member 33 has a tapered shape in which the diameter decreases toward the upper side. In this embodiment, as shown in FIG. 27 , when the annular member 33 is in the stored state, the outer peripheral surface 33 c of the annular member 33 is continuous with the outer peripheral surface of the cover peripheral wall portion 31 a of the cover 31 (forming one continuous surface). ), and are provided substantially flush with the cover peripheral wall portion 31a. That is, the outer peripheral surface 33c of the annular member 33 is provided continuously with the lid peripheral wall portion 31a of the lid body 31.

Furthermore, in this embodiment, as shown in FIGS. 24 and 27 , when the annular member 33 is in the stored state, the upper surface 33 b of the annular member 33 is provided continuously with the lid top wall 31 b of the cover 31 . Specifically, the upper surface 33b of the annular member 33 is provided substantially flush with the upper surface of the top wall 31b of the cover 31 so as to form a continuous surface with the upper surface of the top wall 31b of the cover 31. .

In addition, in this embodiment, as shown in FIGS. 23 and 25 , the annular member 33 has an annular rear end portion 33g connected to the first hinge (hinge) 32 and an annular front end portion 33h. The member 33 is located at the frontmost side when in the stowed state; and a pair of annular side end portions 33i connect the annular rear end portion 33g and the annular front end portion 33h.

Next, at least one of the annular rear end portion 33g, the annular front end portion 33h, and the pair of annular side end portions 33i is provided in the outer peripheral groove (storage recess) 31f. Specifically, the outer peripheral groove 31f has a rear end setting portion 31g for setting the annular rear end portion 33g, a front end setting portion 31h for setting the annular front end portion 33h, and a pair of annular side end portions 33i. A pair of side end setting portions 31i are provided. That is, in this embodiment, the annular rear end part 33g, the annular front end part 33h, and the pair of annular side end parts 33i are all provided in the outer peripheral groove (storage recessed part) 31f.

Further forward from the front end installation portion 31h of the cover 31, a recessed groove portion 31k of the cover peripheral wall portion 31a is provided. Due to the presence of the groove portion 31k, a gap is provided between the front end of the lower surface 33a of the annular member 33 and the cover peripheral wall portion 31a in the stored state of the annular member 33. Therefore, the user can easily insert his fingers into the groove 31k and hang on the annular member 33 to change the annular member 33 from the stored state to the open state.

In addition, the cap assembly 3C of this embodiment, as shown in FIG. 24 , has a storage state retaining mechanism 23 that can form an annular shape in which the lower surface 33 a of the annular member 33 and the top wall portion 31 b of the cover body 31 face each other. In the stored state of the member 33, the posture of the ring-shaped member 33 is maintained. Furthermore, the stored state holding mechanism 23 has a protrusion (locked portion) 70 provided on the annular member 33 and an elastic piece (locking portion) 71 that locks the protrusion 70 of the annular member 33 in the stored state.

The protrusion 70 protrudes forward from the annular bearing portion 56 of the annular member 33 . The elastic piece 71 has an elastically deformable plate shape and extends downward from the rear end of the cover top wall 31b of the cover 31 . When the annular member 33 is placed in the stowed state, the elastic piece 71 faces the protrusion 70 with a gap from the opening direction side in the hinge circumferential direction, or contacts the protrusion 70 . The size between the front end (lower end) of the elastic piece 71 and the hinge central axis A along the hinge radial direction is equal to the size between the front end (front end) of the protrusion 70 and the hinge central axis A along the hinge radial direction. Ratio is equal to or less than that.

The protrusion 70 climbs over the elastic piece 71 in the hinge circumferential direction when the annular member 33 is rotated in the opening direction about the hinge central axis A by a predetermined or higher torque due to a user's operation or the like. Specifically, in the process of converting the ring member 33 from the stored state to the open state shown in FIG. 25 , the protrusion 70 rotates around the hinge central axis A together with the ring member 33 . The annular member 33 is rotated with a torque exceeding a predetermined level, whereby the protrusion 70 is slidably contacted with the elastic piece 71 while elastically deforming the elastic piece 71 toward the outside in the hinge radial direction, so that the protrusion 70 can be rotated around the hinge central axis A. Climb over elastic piece 71. During this climbing process, the user can feel a click feeling and can feel and recognize that the ring member 33 has been detached from the stored state.

Furthermore, contrary to the above, in the process of returning the ring member 33 from the open state to the stored state, the ring member 33 is rotated toward the closing direction side in the hinge circumferential direction, and when it is about to become the stored state, the protrusion 70 is in sliding contact with the elastic piece 71 while elastically deforming the elastic piece 71 toward the outside in the radial direction of the hinge, and climbing over the elastic piece 71 around the central axis A of the hinge. Thereby, the stored state holding mechanism 23 maintains the annular member 33 in the stored state posture again. In addition, during the climbing process, the user can get a click feeling and feel that the operation is completed. Furthermore, in this embodiment, the storage state maintaining mechanism 23 is also provided in the front-rear direction, and is located closer to the first hinge (hinge) 32 side (ie, the rear side) than the central axis C of the cap.

In another example (reference example of this embodiment), the annular member 33 may be configured to stand upward in the open state, and the protrusion 70 climbs over the elastic piece 71 around the hinge central axis A. In this case, due to the resistance of the climbing operation, the user can get a click feeling and feel that the ring member 33 has stood up upward.

In addition, in this embodiment, by adjusting the shape of the protrusion 70, the shape of the elastic piece 71, and the abutment method between the protrusion 70 and the elastic piece 71, etc., the protrusion 70 can ride on the elastic piece 71 at any position, and the protrusion 70 can ride on the elastic piece 71 at any position. Slide while riding with the elastic piece 71 on. In detail, in addition to the respective shapes of the elastic piece 71 and the protrusion 70 , the sliding distance, abutment angle, sliding resistance, etc. can also be adjusted. The user will feel a sudden resistance when the protrusion 70 rides on the elastic piece 71, so that the user can obtain the same operation feeling as a click feeling. Any position on the bicycle may be a position in which the annular member 33 is in the process of switching the annular member 33 from the stored state to the open state, a position in which the annular member 33 is raised upward in the open state, or the annular member 33 is in the open state. It can be any position such as the open state, the position where the rotation is about to reach the limit toward the rear side, etc.

In addition, in this embodiment, by adjusting the shape of the protrusion 70, the shape of the elastic piece 71, and the abutment method of the protrusion 70 and the elastic piece 71, etc., the annular shape can be made at any position around the central axis A of the hinge. The member 33 stops (stands still) with the protrusion 70 riding on the elastic piece 71 . In detail, in addition to the respective shapes of the elastic piece 71 and the protrusion 70 , the sliding distance, abutment angle, sliding resistance, etc. can also be adjusted. In particular, the sliding resistance is adjusted and increased step by step in response to the rotation of the annular member 33 around the hinge central axis A, thereby achieving a smooth stop. Any position where the bicycle is stopped while riding can be considered as a position where the annular member 33 stands upward in an open state. For example, if the ring member 33 is stopped at a position where the ring member 33 is raised upward, the user can place the beverage container 1C in advance with the ring member 33 raised upward, and immediately put his or her finger on it. Ring member 33 and carried.

In addition, the cap assembly 3C of this embodiment has an open position retaining mechanism 24 as shown in FIG. 26. When the cover 31 rotates to the open position in the opening direction about the hinge central axis A, the open position retaining mechanism 24 can Keep the cover 31 in its position. The open position holding mechanism 24 has a cover elastic piece (cover locked portion) 72 provided on the cover 31 and a cover protrusion (cover protrusion) locked with the cover elastic piece 72 of the cover 31 in the open position. Locking part)73. In this embodiment, the open position holding mechanism 24, that is, the combination of the cover elastic piece 72 and the cover protrusion 73, is arranged in a pair in parallel in the hinge axis direction so as to sandwich the annular bearing portion 56 of the annular member 33. .

The cap protrusion 73 is provided to protrude from the cap bearing portions 52 and 53 of the cap body 30 to the rear side. The cover elastic piece 72 is formed in an elastically deformable plate shape and extends downward from the rear end portion of the cover top wall portion 31 b of the cover body 31 (see FIG. 25 ). As shown in FIG. 26 , when the cover body 31 is set to the open position, the cover elastic piece 72 faces the cover protrusion 73 with a distance from the hinge circumferential opening direction, or is in contact with the cover protrusion 73 . . The dimension along the hinge radial direction between the top end of the cover elastic piece 72 and the hinge central axis A is the same as the dimension along the hinge radial direction between the top end (rear end) of the cover protrusion 73 and the hinge central axis A. Ratio is equal to or less than that.

The lid elastic piece 72 climbs over the lid protrusion 73 in the hinge circumferential direction when the lid 31 rotates in the closing direction about the hinge central axis A with a torque exceeding a predetermined amount due to user operation or the like. Specifically, during the process of converting the cover 31 from the open position to the closed position shown in FIG. 24 , the cover elastic piece 72 will rotate around the hinge central axis A together with the cover 31 . The cover body 31 is rotated with a torque exceeding a predetermined level, causing the cover elastic piece 72 to elastically deform itself toward the outside in the hinge radial direction while sliding in contact with the cover protrusion 73, so that it can rotate around the hinge central axis A. Climb over the cover with protrusion 73. During this passing process, the user can get a click feeling and can feel that the cover 31 has been separated from the open position.

In addition, contrary to the above, in the process of opening the cover 31 from the closed position to the open position, the cover 31 rotates toward the opening direction side in the hinge circumferential direction, and just before reaching the open position, the cover elastic piece 72 While slidingly contacting the cover protrusion 73, the cover protrusion 73 can be climbed around the hinge central axis A by elastically deforming itself outward in the hinge radial direction. Thereby, the open position maintaining mechanism 24 can maintain the cover 31 in the open position. In addition, during the climbing process, the user can get a click feeling and feel that the operation is completed. In addition, the open position holding mechanism 24 is provided on the first hinge (hinge) 32 side (that is, the rear side) relative to the central axis C of the cap in the front-rear direction.

The cap assembly 3C and the beverage container 1C of this embodiment described above are provided with the storage state holding mechanism 23 that can hold the annular member 33 in the storage state. Therefore, for example, when the beverage container 1C is placed in an inverted posture or the beverage container 1C is acted upon by centrifugal force, it is possible to suppress the annular member 33 in the stored state from accidentally becoming open. Therefore, the volume increase of the annular member 33 can be more stably suppressed, and the annular member 33 is less likely to cause obstruction when storing the beverage container 1C in a bag or the like or when opening and closing the cap, thereby improving usability.

In this embodiment, the stored state holding mechanism 23 has a protrusion (locked portion) 70 provided on the annular member 33 and an elastic piece (locking portion) that engages the protrusion 70 of the annular member 33 in the stored state. portion) 71, the protrusion 70 can climb over the elastic piece 71 when the annular member 33 is rotated in the opening direction around the hinge central axis A with a torque exceeding a predetermined amount. In this case, due to the engagement between the protrusion (locked portion) 70 and the elastic piece (locking portion) 71 , it is possible to stably suppress the annular member 33 in the stored state from accidentally changing to the open state. In addition, when using the annular member 33, the user only needs to rotate the annular member 33 in the opening direction with a rotational force greater than a predetermined amount (a torque greater than a predetermined amount), and can simply rotate the annular member 33 without complicated operations. 33 is set to open status. Therefore, operability is good.

In addition, when the user rotates the ring-shaped member 33 in the stored state in the opening direction around the central axis A of the hinge, the protrusion (locked portion) 70 climbs over the elastic piece (locking portion) 71. You can get a clicky feeling. By obtaining this click feeling, the user can visually recognize that the ring member 33 has been released from the stored state.

In addition, when the annular member 33 in the open state is returned to the stored state, the protrusion (locked portion) 70 can pass over the elastic piece (locking portion) 71 in the opposite direction, and the user can also feel a click feeling. By feeling this clicking sensation, the user can perceptually recognize that the ring member 33 is set to the stored state again.

In addition, in the present embodiment, the stored state maintaining mechanism 23 is provided in the front-rear direction on the side of the first hinge 32 relative to the central axis C of the cap. In this case, the distance between the stored state maintaining mechanism 23 and the hinge central axis A can be suppressed and reduced, and the rotation radius of the stored state maintaining mechanism 23 can be suppressed and reduced. Thereby, the stored state maintaining mechanism 23 is less susceptible to the influence of molding errors or component deformations during manufacturing, and therefore the function of the stored state maintaining mechanism 23 can be maintained satisfactorily. In addition, since the stored state holding mechanism 23 is provided at a position that is difficult to see from the front side, the design of the appearance is improved.

In addition, in this embodiment, an open position holding mechanism 24 is provided to hold the cover 31 in the open position. Therefore, for example, even if the user pours the container with force when drinking a beverage, it is possible to suppress undesirable situations such as accidentally closing the lid 31 in the open position and hitting the face.

In addition, in this embodiment, the open position holding mechanism 24 has: a cover elastic piece (cover locked portion) 72 provided on the cover body 31; and a cover protrusion (cover locked portion) 73 for forming the The cover elastic piece 72 of the cover 31 in the open position is locked; the cover elastic piece 72 can climb over the cover when the cover 31 rotates in the closing direction about the hinge central axis A with a torque exceeding a predetermined amount. Protrusion 73. In this case, when the user drinks the beverage, the elastic piece for the lid (the locked portion for the lid) 72 is engaged with the protrusion for the lid (the blocking portion for the lid) 73, and the lid can be stably restrained from being moved to the open position. Body 31 accidentally rotates to the occlusive position. In addition, when the user finishes drinking the beverage, the lid 31 can be easily returned to the closed position by rotating the lid 31 in the closing direction with a rotational force greater than a predetermined amount (a torque greater than a predetermined amount). Therefore, operability is good.

In addition, when the user rotates the cover body 31 in the open position in the closing direction around the hinge central axis A, the cover elastic piece (cover locked portion) 72 climbs over the cover protrusion (cover clamping portion). stop) 73, the user can get a click feeling. By obtaining this click feeling, the user can feel and recognize that the cover 31 has been released from the open position.

In addition, when the cover body 31 in the closed position is opened to the open position, the cover elastic piece (cover locked portion) 72 climbs over the cover protrusion (cover locked portion) 73 in the opposite direction to the above, thereby Users can also get a clicky feel. Due to this click feeling, the user can feel and recognize that the cover 31 is set to the open position.

In addition, the cap assembly 3C and the beverage container 1C of this embodiment are provided with an outer peripheral groove (storage recess) 31f capable of accommodating at least a part of the annular member 33 in the stored state. Therefore, when the annular member 33 is stored, the protruding size of the annular member 33 from the upper side of the cap assembly 3C can be suppressed to be small, and an increase in volume due to the provision of the annular member 33 can be suppressed. Thereby, the influence of the annular member 33 on the design of the appearance of the cap assembly 3C can be suppressed. As in this embodiment, the ring-shaped member 33 in the stored state and the outer shape of the cap assembly 3C can be formed almost integrally.

Specifically, at least one of the annular rear end portion 33g, the annular front end portion 33h, and the pair of annular side end portions 33i is provided as a component of the annular member 33 in the outer peripheral groove (storage recess) 31f. ; In this embodiment, these components are all provided in the outer peripheral groove 31f. The protrusion of the cap assembly 3C of the annular member 33 can be suppressed more stably.

In addition, in this embodiment, as shown in FIG. 27 , when the annular member 33 is in the stored state, the upper surface 33 b of the annular member 33 is provided to be continuous with the lid top wall 31 b of the cover 31 , and the annular member 33 The outer peripheral surface 33c is provided continuously with the cover peripheral wall portion 31a of the cover 31. In this case, when the annular member 33 is brought into the stored state, the annular member 33 does not protrude from the upper surface or the outer peripheral surface of the cap assembly 3C. Therefore, the outer shapes of the annular member 33 in the stored state and the cap assembly 3C can be more integrated, so that the appearance design of the cap assembly 3C can be improved.

Here, a modification of the cap assembly 3C of the third embodiment will be described with reference to FIGS. 28 and 29 . FIG. 28 is a perspective view of a part of the cover 31 of the cap assembly 3C in the modification of the third embodiment, and FIG. 29 is a perspective view of the cap assembly 3C in the modification of the third embodiment.

As shown in FIGS. 28 and 29 , in this modification, the stored state maintaining mechanism 23 has an annular end portion 76 provided on the annular member 33; the annular end portion 76 has a locking end portion 76a and a locking recessed portion. (Stuck part) 76b. In addition, in this modification, the stored state holding mechanism 23 has an elastic protrusion (locking portion) 74 that engages the locking recessed portion 76b of the annular member 33 in the stored state after the end portion 76a is mounted.

The locking end portion 76a is formed as a corner portion and is connected between one of the end surfaces of the annular member 33 with the annular bearing portion 56 facing the direction of the hinge axis (perpendicular to the hinge central axis A). surface); and a surface connecting one end surface of the annular bearing portion 56 facing the hinge axis direction and the other end surface facing the hinge axis direction (a surface parallel to the hinge central axis A) . The locking recessed portion 76b is formed by being recessed from one end surface of the annular bearing portion 56 of the annular member 33 facing the hinge axis direction to the other side facing the hinge axis direction. The elastic protrusion 74 has an elastically deformable plate shape and extends downward from the rear end of the cover top wall 31 b of the cover 31 . In addition, while in the aforementioned third embodiment, the pair of plate surfaces of the elastic piece 71 faces the front-rear direction, in this modification, the pair of plate surfaces of the elastic protrusion 74 faces the hinge axis direction (left-right direction).

The elastic protrusion 74 has a protrusion 75 provided at the lower end of the elastic protrusion 74 and protruding in the hinge axis direction. Specifically, the protrusion 75 protrudes from the lower end of the elastic protrusion 74 toward the other side in the hinge axis direction. When the annular member 33 is placed in the stored state, the protruding portion 75 is locked in the locking recessed portion 76b.

From the stored state of the ring member 33, if the ring member 33 is rotated in the opening direction about the hinge central axis A with a torque exceeding a predetermined amount due to user operation or other reasons, the locking recessed portion 76b will be rotated in the hinge. The protruding portion 75 of the upper elastic protrusion 74 rides in the chain circumferential direction. Specifically, from the storage state of the annular member 33 to the process of converting the annular member 33 to the open state shown in FIG. 29 , the locking recessed portion 76 b follows the annular member 33 around the hinge central axis A. Swirl. By rotating the annular member 33 with a torque greater than or equal to a predetermined amount, the locking recessed portion 76b is in sliding contact with the protruding portion 75 of the elastic protrusion 74 while elastically deforming the elastic protrusion 74 toward one side in the hinge axis direction. Ride upper tab 75 about hinge center axis A. Further, by rotating the annular member 33 in the opening direction, the protruding portion 75 of the elastic protrusion 74 is in sliding contact with one end surface of the annular member 33 facing the hinge axis direction of the annular bearing portion 56 while exceeding the The end portion 76a is locked, thereby releasing the engagement between the protruding portion 75 and the annular end portion 76.

On the other hand, contrary to the above, in the process of returning the ring member 33 from the open state to the stored state, the ring member 33 rotates in the closing direction in the hinge circumferential direction, and first the protrusion 75 of the elastic protrusion 74 rides on it. Locking end 76a. Furthermore, by rotating the annular member 33 in the closing direction, the protruding portion 75 of the elastic protrusion 74 protrudes while sliding in contact with one end surface of the annular bearing portion 56 of the annular member 33 facing the hinge axis direction. The portion 75 is locked in the locking recessed portion (locked portion) 76b. Thereby, the stored state holding mechanism 23 maintains the annular member 33 in the stored state posture again. In addition, when the protruding portion 75 rides on the locking end portion 76a and when the protruding portion 75 is locked into the locking recessed portion 76b, the user can feel a sudden sense of resistance, and can feel and recognize what state the rotation operation is in. .

In the first embodiment, there is only one convex convex portion 20e inserted into the concave step portion 16c. On the other hand, in this modification, the locking end portion 76a or the convex protrusion 75 riding on the locking recess 76b is respectively locked in two positions: when the annular member 33 is rotated in the opening direction. It is locked at the locking end portion 76a and the space beyond the locking end portion 76a, and when the annular member 33 is rotated in the closing direction, it is locked at the locking recessed portion 76b. In fact, when the protruding portion 75 exceeds the locking end portion 76a in the opening direction, the protruding portion 75 does not come into contact with anywhere and is exposed in the space. However, this can be expressed as being locked in a wide space. That is, when the annular member 33 is rotated in the opening direction and when it is rotated in the closing direction, the position where the user can feel a sudden resistance and the position where it is locked are different.

The locking end portion 76a and the space beyond the locking end portion 76a are provided on one end surface of the annular bearing portion 56 facing the hinge axis direction, that is, a plurality of locking recessed portions 76b are provided. That is, in response to the sliding position of one end surface of the annular bearing portion 56 facing the hinge axis direction, locking recessed portions 76b are provided at multiple locations, whereby the protrusion can be made at any position around the hinge central axis A. The portion 75 is locked with the locking recessed portion 76b, and the annular member 33 is stopped (stationary). Any position may be considered, for example, a position where the annular member 33 stands upward in an open state. For example, when the ring member 33 is stopped in a position where the ring member 33 is raised upward, the user can place the beverage container 1C with the ring member 33 raised upward and quickly hang his finger on it. It is carried on the ring member 33.

In addition, when the annular member 33 rotates in the opening direction or the closing direction in the circumferential direction of the hinge, and the protruding portion 75 of the elastic protrusion 74 rides on the locking end portion 76a or the locking recessed portion 76b, the protruding portion 75 may be moved to one side. It is stopped while maintaining the riding state while being in sliding contact with one end surface of the annular bearing portion 56 facing the direction of the hinge axis. Specifically, in addition to the shape of one end surface of the protruding portion 75 and the annular bearing portion 56 facing the hinge axis direction, the sliding distance, contact angle, sliding resistance, etc. can also be adjusted. In particular, by adjusting the sliding resistance in stages according to the rotation of the annular member 33 around the hinge central axis A, a smooth stop can be achieved. It is conceivable to set the arbitrary stop position to a position where the annular member 33 is in an open state and stands upward.

As described above, as described in the first to third embodiments and this modification, when the annular member 33 (11) is rotated in the opening direction or the closing direction in the circumferential direction of the hinge, the convex shape can be appropriately selected. Climbing over each other, or insertion (blocking) caused by convex and concave shapes, etc. If it's the latter, you can appropriately choose the position and number of stops, or whether it will slide after climbing, or it will still slide after riding on it, etc. In other words, the selection can be appropriately made according to the required functions, such as the shape of the product, the installation space of the structure, the position where the ring member 33 (11) is desired to stop, and the position where the user is desired to give a sudden resistance or click feeling. , and they are interchangeable with each other. Therefore, for example, the climbing structure of the third embodiment can also be applied to the above-mentioned first embodiment. The same applies to the fourth to fifth embodiments described later and their modifications.

In this modification, the stored state holding mechanism 23 has a click mechanism that provides a click feeling when the annular member 33 is rotated in the opening direction or the closing direction about the hinge central axis A. In addition, in this modification, only one set of the open position holding mechanism 24 , that is, the combination of the cover elastic piece (cover engaged portion) 72 and the cover protrusion (cover engaging portion) 73 is provided.

The cap assembly 3C of the modified example described above can also achieve the same effects as those of the above-mentioned embodiment.

[Fourth Embodiment] Next, a cap assembly 3D according to a fourth embodiment of the present invention and a beverage container 1D provided with the cap assembly 3D will be described with reference to FIGS. 30 to 34 . In this embodiment, the same names or symbols may be used for the same structures as those in the above-described embodiment, and description thereof may be omitted.

As shown in FIGS. 30 and 31 , the beverage container 1D of this embodiment includes a cap assembly 3D and a bottomed cylindrical container body 2D to which the cap assembly 3D is mounted. The cap assembly 3D can be detachably mounted on the mouth and neck 2c of the upper-open container body 2D by screwing.

30 , 31 and 34 show a part of the cap assembly 3D and the beverage container 1D, representing the closed state (occlusion position) of the lid 31 and the stored state of the annular member 33 . In addition, FIG. 31 shows a longitudinal cross-sectional view parallel to the central axis C at a position shifted to the left from the central axis C. Specifically, it shows a pair of annular bearing portions 56 provided in the annular member 33. A longitudinal sectional view of an annular bearing portion 56 on the other side in the hinge axis direction.

32 is a perspective view showing a part of the cap assembly 3D and the beverage container 1D, and shows the closed state (occlusion position) of the cover 31 and the open state of the annular member 33. FIG. 33 is a perspective view showing parts of the cap assembly 3D and the beverage container 1D, showing the open state (open position) of the lid 31 and the stored state of the annular member 33 .

As shown in FIGS. 30 to 32 , the cover 31 of the cap assembly 3D has a concave or groove-shaped storage recess recessed from the cover top wall 31 b; in this embodiment, this storage recess is called a recess 31 j. That is, the cover top wall part 31b of the cover body 31 has the recessed part (storage recessed part) 31j.

The recessed portion 31j is provided in a portion of the cover top wall portion 31b other than the front end portion. The recessed portion 31j is recessed, and is recessed downward from the portion other than the recessed portion 31j of the roof wall portion 31b (that is, the front end portion of the roof wall portion 31b). The recessed portion 31j is formed in a cutout shape opening on the upper side, left side, right side, and rear side of the cover 31 .

The annular member 33 is provided on the upper side of the cap body 30 and the upper side of the cover body 31 . In this embodiment, the annular member 33 is formed into a substantially semicircular shape. In the stored state of the annular member 33 shown in FIG. 30, the annular member 33 is provided on the top wall part 31b, more specifically, on the recessed part 31j of the top wall part 31b. In the stored state of the annular member 33, at least a part of the annular member 33 is accommodated in the recessed portion (storage recessed portion) 31j.

As shown in FIGS. 30 and 34 , when the annular member 33 is in the stored state, the outer peripheral surface 33 c of the annular member 33 is formed into a convex curved surface extending to the left, right and rear sides and along the circumferential direction. The annular member 33 is provided substantially flush with the cover peripheral wall 31a so that the outer peripheral surface 33c of the cover body 31 is continuous with the outer peripheral surface of the cover peripheral wall 31a (forms one continuous surface). That is, the outer peripheral surface 33c of the annular member 33 is provided continuously with the lid peripheral wall portion 31a of the lid body 31.

As shown in FIGS. 30 and 31 , when the annular member 33 is in the stored state, the upper surface 33 b of the annular member 33 is provided continuously with (the front end part of) the cover top wall 31 b. Specifically, the upper surface 33b of the annular member 33 and the upper surface of the front end portion of the roof wall portion 31b are provided substantially flush to form one continuous surface.

As shown in FIGS. 30 and 32 , the annular member 33 has an annular rear end portion 33g connected to the first hinge (hinge) 32 and an annular front end portion 33h that is located at the front when the annular member 33 is in the stored state. side; and a pair of annular side end portions 33i, connecting the annular rear end portion 33g and the annular front end portion 33h.

Then, at least one of the annular rear end portion 33g, the annular front end portion 33h, and the pair of annular side end portions 33i is provided in the recessed portion (storage recessed portion) 31j. Specifically, the recessed portion 31j has a rear end setting portion 31g for the annular rear end portion 33g, a front end setting portion 31h for the annular front end portion 33h, and a pair of annular side end portions 33i. A pair of side end installation portions 31i. That is, in this embodiment, the annular rear end part 33g, the annular front end part 33h, and the pair of annular side end parts 33i are all provided in the recessed part (storage recessed part) 31j.

As shown in FIG. 31 , in this embodiment, the front end portion of the peripheral wall portion 36b of the mouth forming member 36 and the front end setting portion 31h of the recessed portion (storage recessed portion) 31j are juxtaposed in the front-rear direction. In other words, the front end portion of the peripheral wall portion 36b and the front end installation portion 31h are not juxtaposed in the up-down direction (do not overlap in the up-down direction). Therefore, the front end portion of the drinking mouth portion 36e located at the upper opening edge of the peripheral wall portion 36b and the annular front end portion 33h of the annular member 33 in the stored state are also juxtaposed in the front-rear direction.

Specifically, in the present embodiment, the annular front end portion 33h and the front end installation portion 31h of the annular member 33 in the stored state are provided further back than the front end portions of the peripheral wall portion 36b and the drinking mouth portion 36e. Location.

In addition, the cap assembly 3D of this embodiment, as shown in FIG. 31 , has a stored state retaining mechanism 23 that can form an annular shape in which the lower surface 33 a of the annular member 33 and the top wall portion 31 b of the cover body 31 face each other. In the stored state of the member 33, the posture of the ring-shaped member 33 is maintained. Furthermore, the stored state holding mechanism 23 has a protrusion (locked portion) 70 provided on the annular member 33 and an elastic piece (locking portion) 71 that engages with the protrusion 70 of the annular member 33 in the stored state. However, in this embodiment, the storage state maintaining mechanism 23, that is, the combination of the protrusion 70 and the elastic piece 71, is arranged in parallel in a pair so as to sandwich the cap bearing portion 52 of the cap body 30. The structure of the storage state holding mechanism 23 other than the above is the same as that of the previously described third embodiment, and therefore detailed description is omitted.

Furthermore, the cap assembly 3D of this embodiment, as shown in FIG. 33 , has an open position holding mechanism for maintaining the posture of the cover 31 in the open position after the cover 31 is rotated in the opening direction about the hinge central axis A. Institutions24. Furthermore, the open position holding mechanism 24 has a cover elastic piece (cover locked portion) 72 provided on the cover 31 and a cover protrusion ( Cover with locking part) 73. In this embodiment, only one set of the open position holding mechanism 24 , that is, the cover elastic piece 72 and the cover protrusion 73 is provided.

The cap protrusion 73 protrudes rearward from the cap bearing portion 52 of the cap body 30 . The lid elastic piece 72 has an elastically deformable approximately U-shaped plate shape, extends downward from the rear end of the lid top wall 31b of the lid body 31, and then folds back upward from the rear side. As shown in FIG. 33 , when the cover body 31 is set to the open position, the cover elastic piece 72 faces the cover protrusion 73 with a gap from the open direction side in the hinge circumferential direction, or is in contact with the cover protrusion. 73. The dimension in the hinge radial direction between the top end of the cover elastic piece 72 facing the first hinge 32 side and the hinge central axis A, and the distance between the top end (rear end) of the cover protrusion 73 and the hinge central axis A Compared with the dimensions along the hinge diameter direction, it is equal or less. Since the structure of the open position holding mechanism 24 other than the above is the same as that of the third embodiment, detailed description will be omitted.

The cap assembly 3D and the beverage container 1D of this embodiment described above can also achieve the same effects as those of the above-mentioned embodiment. In addition, in this embodiment, the uppermost front end portion of the peripheral wall portion 36b of the mouth forming member 36 and the front end setting portion 31h of the recessed portion (storage recessed portion) 31j are juxtaposed in the front-rear direction, that is, the peripheral wall portions The front end part of 36b and the front end installation part 31h are not juxtaposed in the up-down direction (they do not overlap when viewed in the up-down direction). Therefore, it is possible to ensure that the upward protrusion amount of the front end portion of the peripheral wall portion 36b (drinking mouth portion 36e) is increased to ensure that the beverage is easy to drink, and the vertical size of the entire cap assembly 3D can be suppressed to be small and compact. Purpose.

[Fifth Embodiment] Next, the cap assembly 3E and the beverage container 1E provided with the cap assembly 3E according to the fifth embodiment of the present invention will be described with reference to FIGS. 35 to 37 . In addition, in this embodiment, the same names or symbols may be used for the same components as those in the above-described embodiment, and description thereof may be omitted.

As shown in FIGS. 35 and 36 , the beverage container 1E of this embodiment includes a cap assembly 3E and a bottomed cylindrical container body 2E to which the cap assembly 3E is mounted. The cap assembly 3E can be detachably mounted on the mouth and neck 2c of the container body 2E with an upper opening by screwing.

35 to 37 show a part of the cap assembly 3E and the beverage container 1E, showing the closed state (occlusion position) of the lid 31 and the stored state of the annular member 33.

As shown in FIGS. 35 and 36 , the cover 31 of the cap assembly 3E has a storage recess, and the storage recess is in the shape of a concave or a groove recessed from the top wall 31 b of the cover 31 . In this embodiment, the storage recess is The recessed portion is called outer peripheral groove 31f. The outer peripheral groove 31f is provided in the outer peripheral portion of the cover top wall portion 31b and extends in the circumferential direction.

As shown in FIG. 36 , in this embodiment, the front end portion of the peripheral wall portion 36 b of the mouth forming member 36 and the front end setting portion 31 h of the outer peripheral groove (storage recessed portion) 31 f are juxtaposed in the front-rear direction. That is, the front end part of the peripheral wall part 36b and the front end installation part 31h are not juxtaposed in the up-down direction (they do not overlap when viewed in the up-down direction). Therefore, the front end portion of the drinking mouth portion 36e located at the upper opening edge of the peripheral wall portion 36b and the annular front end portion 33h of the annular member 33 in the stored state are also juxtaposed in the front-rear direction. In this embodiment, when viewed from the front-to-back direction, the front end portions of the peripheral wall portion 36b and the drinking mouth portion 36e overlap with the annular front end portion 33h.

In addition, in this embodiment, the annular front end portion 33h and the front end installation portion 31h of the annular member 33 in the stored state are provided on the front side of each front end portion of the peripheral wall portion 36b and the drinking mouth portion 36e. .

In addition, the cap assembly 3E of this embodiment has a stored state retaining mechanism 25. As shown in FIG. 36, the stored state retaining mechanism 25 faces the lower surface 33a of the annular member 33 and the top wall portion 31b of the cover 31. In the stored state of the annular member 33, the posture of the annular member 33 can be maintained. The stored state holding mechanism 25 has a locking recessed portion 77 provided in the annular member 33 and a locking convex portion (locking portion) 78 capable of locking in the locking recessed portion 77 of the annular member 33 in the stored state.

The locking recessed portion 77 is provided in the annular front end portion 33h of the annular member 33. The locking recessed portion 77 is formed to be recessed from the inner surface of the annular front end portion 33h facing the radially inward side (rear side) toward the radially outer side (front side).

The locking convex portion 78 is provided in the front end installation portion 31h of the outer peripheral groove 31f. The locking convex portion 78 is formed to protrude toward the radially outer side (front side) from the side wall facing the radially outer side (front side) of the front end installation portion 31h. When the annular member 33 is in the stored state, the locking recessed portion 77 and the locking convex portion 78 lock each other.

When the annular member 33 is rotated by a predetermined or higher torque in the opening direction about the hinge central axis A by a user's operation or the like, the locking recessed portion 77 climbs over the locking convex portion 78 in the hinge circumferential direction.

Specifically, in the process of converting the annular member 33 from the stored state to the open state, the locking recessed portion 77 will rotate around the hinge central axis A together with the annular member 33 . When the annular member 33 is rotated with a torque greater than or equal to a predetermined amount, the locking recessed portion 77 (the lower portion) can slide over the locking convex portion 78 around the hinge center axis A while sliding over the locking convex portion. 78. When climbing up, the user can get a click feeling and can feel and recognize that the ring member 33 has been detached from the stored state.

In addition, in this embodiment, the storage state maintaining mechanism 25 is provided in the front-rear direction, on the opposite side to the first hinge (hinge) 32 from the central axis C of the cap. In this case, the distance between the stored state maintaining mechanism 25 and the hinge central axis A becomes larger. Thereby, the stored state maintaining mechanism 25 can maintain the stored state maintaining mechanism better and more powerfully because the distance between the hinge central axis A as the fulcrum and the stored state maintaining mechanism 25 as the action point increases. 25 functions.

In addition, contrary to the above, in the process of returning the ring member 33 from the open state to the stored state, the ring member 33 rotates toward the closing direction side in the hinge circumferential direction, and locks the recessed portion just before returning to the stored state. 77 is pulled into the locking protrusion 78 and locked while slidingly contacting the locking protrusion 78 . Thereby, the stored state maintaining mechanism 25 can maintain the posture of the ring member 33 in the stored state again. In addition, when this locking is performed, the user can get a click feeling and feel that the operation is completed.

However, a storage state retaining mechanism 25 including a locking recessed portion 77 and a locking convex portion 78 may be provided instead of the stored state retaining mechanisms 21 and 23 in the above-described first, third, and fourth embodiments. That is, in the first embodiment, the front end setting portion 9f and the annular front end portion 11f can be respectively provided. In the third and fourth embodiments, the front end setting portion 31h and the annular front end portion 33h can be respectively provided. The locking recessed portion 77 and the locking convex portion 78 can achieve the same effect. Of course, the same effect can also be achieved by arranging the locking recessed portion 77 and the locking convex portion 78 respectively in any one of the front end setting portion (9f, 31h) and the annular front end portion (11f, 33h).

As shown in FIG. 37 , the cap assembly 3E of this embodiment is further equipped with an open position retaining mechanism 24 . The open position holding mechanism 24 can maintain the posture of the cover 31 in the open position after the cover 31 is rotated in the opening direction about the hinge central axis A. The open position holding mechanism 24 has a cover elastic piece (cover locked portion) 72 and a cover protrusion (cover engaging portion) that is locked with the cover elastic piece 72 of the cover 31 in the open position. 73. In this embodiment, only one set of open position retaining mechanisms 24 are provided, that is, a set of cover elastic pieces 72 and cover protrusions 73 are combined. Since the structure of the open position holding mechanism 24 is the same as that of the third embodiment, its detailed description is omitted.

As shown in FIGS. 35 and 36 , in the cap assembly 3E of this embodiment, the cap locking mechanism 43 has a sliding stopper 51 instead of the annular stopper 46 . The sliding stopper 51 is provided at the front end of the peripheral wall portion 30a of the cap body 30. The sliding stopper 51 is held by the peripheral wall portion 30a so as to be slidably movable in the vertical direction relative to the peripheral wall portion 30a.

By moving the sliding stopper 51 shown in FIG. 36 downward, the locking member 45 can rotate around the second hinge 44, so that the cover 31 in the closed position can be opened. In addition, by moving the sliding stopper 51 upward, the rotation of the locking member 45 around the second hinge 44 is restricted, and the cover 31 is locked in the closed position.

The cap assembly 3E and the beverage container 1E of the present embodiment described above can also achieve the same effects as those of the above-described embodiment. In addition, in this embodiment, the uppermost front end portion of the peripheral wall portion 36b of the mouth forming member 36 and the front end setting portion 31h of the outer peripheral groove (storage recessed portion) 31f are arranged in parallel in the front-rear direction, that is, the peripheral wall portion The front end part of 36b and the front end installation part 31h are not juxtaposed in the up-down direction (they do not overlap in the up-down direction). Therefore, it is possible to ensure that the protrusion amount of the front end portion of the peripheral wall portion 36b (drinking mouth portion 36e) is increased to the upper side to ensure that the beverage is easy to drink, and the overall vertical size of the cap assembly 3E can be suppressed to be small, thereby ensuring that the beverage can be easily consumed. Achieve compactness.

However, the present invention is not limited to the above-described embodiments. For example, as described below, structural changes may be made within the scope that does not deviate from the gist of the invention.

In the aforementioned first and second embodiments, one side in the hinge axis direction corresponds to the tightening side T1 in the circumferential direction, and the other side in the hinge axis direction corresponds to the loosening side T2 in the circumferential direction. However, this is not limited to this. One side in the hinge axis direction may also correspond to the loosening side T2 in the circumferential direction, and the other side in the hinge axis direction may also correspond to the tightening side T1 in the circumferential direction. In this case, when the force toward the fastening side T1 (the other side in the hinge axis direction) acts on the annular members 11 and 33 in the circumferential direction in which the cap assemblies 3A and 3B are screwed to the container bodies 2A and 2B, , this force is absorbed by the elastic deformation of the potential energy imparting parts 19 and 60, and the above-mentioned screwing can be suppressed from being too tight. Therefore, when the cap assemblies 3A and 3B are subsequently detached from the container bodies 2A and 2B, problems such as affecting operability (making it impossible to detach) due to an excessively tight screwing state can be suppressed.

In addition, the potential energy imparting portions 19 and 60 may impart potential energy to the annular members 11 and 33 on one side of the cap body 9 and 30 in the hinge axis direction, and may also impart potential energy on the other side in the hinge axis direction. Give potential energy.

In addition, the potential energy imparting parts 19 and 60 only need to be elastically deformable members, and for example, elastic members such as silicone rubber or elastomer may be used.

In the first embodiment, unless the influence on the appearance of the potential energy imparting part 19 is considered, the first annular bearing part 16 and the sealing part 20 do not need to be separately configured but may be formed integrally. In addition, a wear-resistant coating can be applied to the surface of the first annular bearing portion 16 (at least the end surface facing the other side in the hinge axis direction), and the first annular bearing portion 16 can be directly connected with the end surface provided with The potential energy parts 19 are in contact with each other.

Furthermore, in the first embodiment, one of the cap bearing portion 15 and the first annular bearing portion (annular bearing portion) 16 (the cap bearing portion 15) is provided with a storage recess 15b, and the other one is recessed with the storage recess 15b. (The first annular bearing portion 16) is provided with a bearing sliding surface 16b. Although the example in which the sealing sliding surface 20c of the sealing portion 20 and the bearing sliding surface 16b slide is given, one of the above-mentioned one and the other one can also be slid. or interchangeable. That is, one of the above-mentioned ones may be the first annular bearing part 16 , and the other one above-mentioned may be the cap bearing part 15 .

In addition, in the first embodiment, although one of the bearing sliding surface 16b and the enclosed sliding surface 20c (the bearing sliding surface 16b) has the concave step portion 16c, the bearing sliding surface 16b and the enclosed sliding surface 20c Although the other one (sealing sliding surface 20c) has the convex portion 20e, it is also possible to interchange the one with the other. That is, one of the above-mentioned ones may be the sealing sliding surface 20c, and the other one may be the bearing sliding surface 16b.

In addition, in the second to fifth embodiments, examples have been given in which the locking member 45 of the cover locking mechanism 43 can be rotated around the second hinge 44, but the invention is not limited to this. Although not particularly shown in the drawings, the locking member may be configured to slide freely in the front-rear direction.

In addition, in the second embodiment, although not particularly shown in the figure, if the cover bearing portion and the annular bearing portion of the first hinge (hinge) 32 are arranged adjacent to each other in the hinge axis direction, then The first hinge 32 may also have: a storage recess that is recessed in one of the cover bearing part and the annular bearing part and extends in the hinge axis direction to accommodate the potential energy imparting part; and a sealing part for sealing Give potential energy department. In this case, since the potential energy imparting part can be enclosed in the storage recessed part by the sealing part, the potential energy imparting part can be suppressed from being exposed to the outside, so that the appearance design of the cap assembly 3B and the beverage container 1B has good appearance. In addition, since the potential energy imparting portion is enclosed, it is possible to suppress the function of the potential energy imparting portion from being degraded or becoming unstable due to contamination or the like.

In the first -to -fifth implementation form, a container body with a vacuum insulation structure is cited 2A, 2B, 2C, 2D, 2E, which gives the insulation and cold function. Examples of 1D and 1E, but not limited to these. That is, the present invention can be widely applied to containers with lids in which the cap assembly is detachably installed on the mouth and neck of the container body.

This invention can combine the components described in the embodiments and modifications described above, and can add, omit, replace, or make other changes to the structure within the scope that does not deviate from the scope of the invention. In addition, this invention is not limited by the above-mentioned implementation form, etc., but is limited only by the scope of the license request.

1A, 1B, 1C, 1D, 1E: Beverage containers

2A, 2B, 2C, 2D, 2E: Container body

2a: Bottom surface

2b: Main part

2c: Mouth and neck

2d: Upper opening

2e:shoulders

3A, 3B, 3C, 3D, 3E: Cap assembly

4: Outer container

5:Inner container

6: Vacuum insulation layer

7:Female thread part

8: Overhang part

9,30: Cap body

9a, 30a: Peripheral wall

9b,30c: Top wall part

9c, 31f: Peripheral groove (storage recess)

9e:Backend Settings Department

9f,31h: Front-end setting department

9g: Side end setting part

10: Inner plug part

10a: Flange part

11,33: Ring member

11a,33a: Lower surface

11b,33c: Outer peripheral surface

11c: Plane part

11d: Concave face

11e,33g: Ring-shaped rear end

11f,33h: Ring-shaped front end

11g, 33i: Ring side end

12: hinge

13: Male thread part

14:Waterproof liner

14a: Inner peripheral concave part

14b: Elastic flange part

15,52,53: Cap bearing part

15a: Shaft hole

15b,56b: Storage recess

15c: Arm receiving part

15d: Sliding surface

15e: Small diameter hole

15f: Large diameter hole

16,17,56: Ring bearing part

16a: Shaft hole

16b: Bearing sliding surface

16c,63,63’: step difference part

17a: Shaft hole

17b: Sliding convex part

17c: Contact surface

18,57: hinge shaft

19,60: Empowering potential energy department

20,61: Enclosed Department

20a: Shaft hole

20b:Arm

20c: Enclosed sliding surface

20d: Contact surface of the potential energy imparting part

20e:Protruding part (locking part)

21: Storage state maintaining mechanism

22: Storage state maintaining mechanism (click mechanism)

23: Storage state maintaining mechanism

24: Open position holding mechanism

25: Storage state maintaining mechanism

30b: opening

31: Cover

31a: Cover peripheral wall

31b: cover top wall

31c: Inner wall part

31d: concave part

31e: cone surface

31f: Peripheral groove (storage recess)

31g: Backend settings department

31h: Front-end setting department

31i: Side end setting part

31j: Recessed part (storage recessed part)

31k:Mizube

32: First hinge (hinge)

33a: Lower surface

33b: Upper surface

33h: Ring-shaped front end

33i: Annular side end

34:Female thread part

35: Male thread part

36: Oral forming member

36a: Bottom wall

36b: Peripheral wall

36c: Lower flange part

36e: Drinking mouth

37: Liquid flow port

38: Mouth disassembly and assembly mechanism

39:Waterproof liner

40: Cover gasket

41: Covering components

42: Torsion spring

42a: Winding section

42b,42c: protruding end

43: Cover locking mechanism

44:Second hinge

45:Lock component

45a: First extension

45b: Second extension

46: Ring stopper

47:Hook

48: Elastic component

49: Locked Department

50: Stopped parts

51: Sliding stopper

52a: Shaft hole

52b: accommodate the hole

52c: Groove part

52d: Shaft convex part locking part

52e: Cap end face

53a: Shaft hole

53b: medial side

53c: External sliding joint surface

54,55: Cover bearing part

54a: Shaft hole

54b: Installation recess

54c: Rotating contact part

55a: Shaft hole

55b: medial side

56a: Shaft hole

56b: Storage recess

56c: Ring end face

56d: concave surface

57: hinge shaft

58: Shaft cover

58a:Shaft hole

58b: Small diameter barrel

58c: Large diameter cylinder

58d: overhanging protrusion

58e: Shaft convex part

59: Facing components

59a: Shaft hole

59b: Flange part

59c: cover pressing part

61: Enclosed Department

61a: Shaft hole

61b: Contact surface of the potential energy imparting part

61c: External contact surface

62:convex part

70:Protrusion

71: Elastic piece (locking part)

72: Elastic sheet for cover

73: Cover protrusion

74: Elastic protrusion

75:Protrusion

76: Ring end

76a:Latching end

76b: Locking recess (locked part)

77: Locking recess

78: Locking convex part (locking part)

A: Hinge central axis

C: Central axis (cap central axis)

S: Insulation material

T1: One side in the circumferential direction (tightening side)

T2: The other side in the circumferential direction (released side)

FIG. 1 is a perspective view of a beverage container according to a first embodiment of the present invention. Figure 2 is a cross-sectional view showing the beverage container. FIG. 3 is a cross-sectional view showing a part of the beverage container, showing a state in which the ring-shaped member is stored. Fig. 4 is a sectional view showing a part of the beverage container, showing the open state of the annular member. Fig. 5 is a perspective view showing a part of the beverage container. Figure 6 is a partial cross-sectional view showing a portion of the beverage container. Figure 7 is an exploded perspective view showing the cap assembly. Figure 8 is an exploded perspective view showing the cap assembly. Fig. 9 is a perspective view showing a part of the cap body and the cap bearing portion. Fig. 10 is a perspective view showing a beverage container according to a second embodiment of the present invention. 11 is a cross-sectional view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the stored state of the annular member. 12 is a cross-sectional view showing a part of the beverage container, showing the open state (open position) of the lid and the open state of the annular member. 13 is a side view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the open state of the annular member. Figure 14 is a partial perspective view showing a beverage container. Fig. 15 is a partial cross-sectional view (longitudinal cross-sectional view) showing a part of the beverage container. Fig. 16 is a partial sectional view (cross-sectional view) showing a part of the beverage container. Figure 17 is an exploded perspective view showing the cap assembly. Figure 18 is an exploded perspective view showing the cap assembly. 19 is a perspective view showing the shaft cover of the first hinge (hinge). Fig. 20 is a perspective view showing a part of the cap body and the cap bearing portion. Fig. 21 is a perspective view showing a part of the cap body and the cap bearing portion. Fig. 22 is a perspective view showing a part of the annular member and the annular bearing portion. Fig. 23 is a perspective view showing a beverage container according to a third embodiment of the present invention. 24 is a cross-sectional view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the stored state of the annular member. 25 is a perspective view showing the cap assembly, showing the closed state (occlusion position) of the cover body and the open state of the annular member. FIG. 26 is a perspective view showing the cap assembly, showing the open state (open position) of the cover and the stored state of the annular member. Figure 27 is a partial cross-sectional view (longitudinal cross-sectional view) showing the cap assembly. 28 is a perspective view showing a part of the cover body of the cap assembly according to a modified example of the third embodiment. 29 is a perspective view showing a cap assembly according to a modified example of the third embodiment, showing the closed state (occlusion position) of the cover body and the open state of the annular member. Fig. 30 is a perspective view showing a part of the beverage container according to the fourth embodiment of the present invention. 31 is a cross-sectional view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the stored state of the annular member. 32 is a perspective view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the open state of the annular member. 33 is a perspective view showing a part of the beverage container, showing the open state (open position) of the lid and the stored state of the annular member. Fig. 34 is a partial cross-sectional view (longitudinal cross-sectional view) showing a part of the beverage container. Fig. 35 is a perspective view showing a part of the beverage container according to the fifth embodiment of the present invention. 36 is a cross-sectional view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the stored state of the annular member. 37 is a perspective view showing a part of the beverage container, showing the closed state (occlusion position) of the lid and the stored state of the annular member.

1D: Beverage container

2D: Container body

2b: Main part

2c: Mouth and neck

2d: Upper opening

3D: Cap assembly

4: Outer container

5:Inner container

6: Vacuum insulation layer

8: Overhang part

23: Storage state maintaining mechanism

30: Cap body

30a: Peripheral wall

30c: Top wall part

31: Cover

31a: Cover peripheral wall

31b: cover top wall

31g: Backend settings department

31h: Front-end setting department

31j: Recessed part (storage recessed part)

32: First hinge (hinge)

33: Ring member

33a: Lower surface

33b: Upper surface

33g: Ring-shaped rear end

33h: Ring-shaped front end

36: Oral forming member

36b: Peripheral wall

36e: Drinking mouth

39:Waterproof liner

56: Ring bearing part

57: hinge shaft

70:Protrusion

71: Elastic piece (locking part)

A: Hinge central axis

C: Central axis (cap central axis)

Claims (4)

A cap assembly that can be installed on the mouth and neck of a container body with an upper opening. The cap assembly includes: a cap body used to block an upper opening of the container body and has a A liquid flow port connected to the interior of the container body; An annular member disposed on the upper side of the cap body; a hinge connecting the ring-shaped member to the cap body in such a manner that the ring-shaped member can freely rotate about a central axis of the hinge; and A cover is disposed between the cap body and the annular member in the up and down direction, and covers the liquid flow port, in a state of being given potential energy in the opening direction around the central axis of the hinge. , connected to the cap body in a freely rotating manner through the hinge; The cap body has a mouth-forming member for providing the liquid flow port. The mouth-forming member has a bottom wall portion and a peripheral wall portion. The bottom wall portion forms the liquid flow port, and the peripheral wall portion is It is cylindrical in shape and stands upward from the bottom wall. The front end of the peripheral wall protrudes from the upper side more than other parts. The cover has a storage recess formed from a cover of the cover. The top wall portion is recessed and has a concave shape or a groove shape. In the storage state of the annular member, at least a part of the annular member is stored in the storage recessed portion, and the storage state of the annular member is the ring. The lower surface of the annular member is opposite to the cover top wall, the annular member has an annular front end portion located at the frontmost side when the annular member is set to the storage state, and the storage recessed portion There is a front end setting part for setting the annular front end part, and the front end part of the peripheral wall part and the front end setting part are arranged side by side in the front and rear direction. A cap assembly that can be installed on the neck of a container body with an opening on the upper part. The cap assembly includes: A cap body, used to block an upper opening of the container body, and having a liquid flow port connected to the interior of the container body; An annular member disposed on the upper side of the cap body; a hinge connecting the ring-shaped member to the cap body in a manner that allows the ring-shaped member to freely rotate about a central axis of the hinge; and A cover is disposed between the cap body and the annular member in the up and down direction and covers the liquid flow port. In a state where potential energy is imparted in the opening direction of the central axis of the hinge, through The hinge is connected to the cap body in a freely rotatable manner; The cover has a storage recess, which is recessed from a cover top wall of the cover to be concave or groove-shaped. In the storage state of the annular member, at least one part of the annular member is A portion is stored in the storage recess, and the storage state of the annular member is when the lower surface of the annular member faces the top wall of the cap, and the cap assembly is set to the storage state. , an upper surface of the annular member is arranged to be continuous with the cover top wall of the cover, and an outer peripheral surface of the annular member is arranged to be continuous with a cover peripheral wall of the cover. . The cap assembly according to claim 2, wherein the lower surface of the annular member is shaped to follow the shape of the top wall of the cover that is opposed to the lower surface. A beverage container containing: A cap assembly as claimed in claim 1 or 2; and The container body with the cap assembly installed.

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