CN115724069A - Cap unit and beverage container - Google Patents

Abstract

The present invention provides a cap unit and a beverage container in which convenience is improved by making a ring member rotatable about a hinge, and the screwed state of the cap unit and a container body can be maintained satisfactorily. The cap unit (3A) is detachably mounted on the mouth and neck of the container main body with the upper opening by screwing, and includes: a cap main body (9) for closing the upper opening of the container main body; an annular ring member (11 ), configured on the upper side of the cap main body (9); and a hinge (12), connecting the ring part (11) relative to the cap main body (9) so as to be freely rotatable around the hinge central axis (A), and the hinge (12) has a The elastically deformable force application portion (19) applies force to the ring member (11) on one side of the hinge axis extending toward the hinge central axis (A) relative to the cap main body (9).

Description

Cap unit and beverage container

technical field

The present invention relates to a cap unit and a container for beverages.

Background technique

Conventionally, there is known a cap unit that is a plug that is detachably attached to the mouth and neck of a container body with an upper opening by screwing. The cap unit is rotatably attached via a hinge to an annular ring member (handle portion) that can be hung on a hand or the like (for example, refer to Patent Document 1). In addition, there is also known a structure in which the ring member stands in a fixed state (integrated) with the lid body of the cap unit (for example, refer to Non-Patent Document 1).

By providing such a ring member, it is possible to carry the beverage container without holding the container main body by putting fingers through the ring member or by hanging a carabiner on the ring member for lifting or the like.

Patent Document 1: Japanese Patent Laid-Open No. 2020-83331

Non-Patent Document 1: "[News Announcement] Tiger Custom Bottle New Lineup MCZ Type Released on July 6, 2021 (Tuesday)", [online], July 6, 2021, Tiger Vacuum Bottle Co., Ltd., [Reiwa Retrieved on July 6, 30], Internet <URL: https://www.tiger.jp/news/press_release/pr_210706_01.html>

In the case of a structure in which the ring member is fixed to the lid body and stands upright as in Non-Patent Document 1, the dimension in the up-down direction increases, so that it is easy to put the beverage container into the bag and carry it. become a hindrance. In this regard, if the ring member is freely rotatable around the hinge as in Patent Document 1, the ring member can be brought into a folded state to suppress an increase in size in the vertical direction, facilitate downsizing, and improve convenience.

However, when carrying the finger through the ring member or dropping the beverage container, there may be a force applied to the ring member in the circumferential direction (screwing release direction). In such a case, the cap unit may rotate and cause There is a concern that the screwed state with the container body may become unstable.

Contents of the invention

One object of the present invention is to provide a cap unit and a beverage container in which the ring member is freely rotatable about a hinge, improves convenience, and maintains a screwed state of the cap unit and the container body satisfactorily.

One aspect of the present invention is a cap unit that is detachably attached to the mouth and neck of a container body with an upper opening by screwing, and includes: a cap body that closes the upper opening of the container body; and an annular ring member. , arranged on the upper side of the above-mentioned cap main body; and a hinge, which connects the above-mentioned ring member to the above-mentioned cap main body so as to be rotatable around the hinge central axis, and the above-mentioned hinge has an elastically deformable force applying part, and the above-mentioned force applying part is relative to the above-mentioned cap. One side in the hinge axial direction where the main body extends toward the hinge central axis biases the ring member.

The cap unit may include: a port forming member having a liquid port communicating with the inside of the container body and provided on the cap body; a cap body disposed between the cap body and the ring member in the vertical direction and Covering the above-mentioned liquid port, in the state of being urged in the opening direction about the central axis of the above-mentioned hinge, it is connected to the above-mentioned cap main body through the above-mentioned hinge so as to be rotatable; Fixed in blocked position.

In the cap unit, one side in the axial direction of the hinge corresponds to the fastening side in the circumferential direction where the cap unit and the container body are screwed together, and the other side in the axial direction of the hinge corresponds to the slack in the circumferential direction. side.

In the above-mentioned cap unit, the above-mentioned hinge may have: a cap bearing part provided on the above-mentioned cap main body; a ring bearing part provided on the above-mentioned ring member and arranged adjacent to the above-mentioned cap bearing part in the axial direction of the above-mentioned hinge; and The hinge shaft pivotally supports the cap bearing portion and the ring bearing portion so as to be relatively rotatable about the hinge central axis.

In the above-mentioned cap unit, the above-mentioned hinge may have: a cap bearing part provided on the above-mentioned cap main body; a cap bearing part provided on the above-mentioned cover body; and the cap bearings are arranged in the axial direction of the hinge; and the hinge shaft supports the cap bearings, the cap bearings, and the ring bearings so as to be relatively rotatable about the hinge central axis.

In the above-mentioned cap unit, the above-mentioned hinge may have: a receiving recess, which is recessed in one of the above-mentioned cap bearing part and the above-mentioned ring bearing part, and extends in the axial direction of the above-mentioned hinge, and accommodates the above-mentioned force application part; It is assumed that the above-mentioned biasing portion is sealed in the above-mentioned receiving recessed portion.

In the above-mentioned cap unit, the above-mentioned hinge may have: a receiving recess, which is recessed in one of the above-mentioned cover bearing part and the above-mentioned ring bearing part, and extends in the axial direction of the above-mentioned hinge, and accommodates the above-mentioned force applying part; and an enclosing part, The concave arrangement seals the above-mentioned force applying part into the above-mentioned receiving concave part.

In the cap unit, the hinge may have a click mechanism, and the click mechanism may provide a click feeling when the ring member is rotated in an opening direction or a closing direction around the hinge central axis.

In the cap unit, the lower surface of the ring member may be formed in a shape following the shape of the top wall of the cap main body facing the lower surface.

In the cap unit, the lower surface of the ring member may be formed in a shape following the shape of the lid top wall portion of the lid body facing the lower surface.

Moreover, one aspect of the drink container of this invention is equipped with the said cap unit, and the said container main body to which the said cap unit was attached.

According to the cap unit and the beverage container according to one aspect of the present invention, the ring member is rotatable around the hinge to improve convenience, and the screwed state of the cap unit and the container body can be maintained satisfactorily.

Description of drawings

Fig. 1 is a perspective view showing a beverage container according to a first embodiment of the present invention.

Fig. 2 is a sectional view showing a beverage container.

Fig. 3 is a cross-sectional view showing a part of the beverage container, showing a storage state of a ring member.

Fig. 4 is a cross-sectional view showing a part of the beverage container, showing the open state of the ring member.

Fig. 5 is a perspective view showing a part of the beverage container.

Fig. 6 is a partial cross-sectional view showing a part of the beverage container.

Fig. 7 is an exploded perspective view showing a cap unit.

Fig. 8 is an exploded perspective view showing a cap unit.

Fig. 9 is a perspective view showing a part of the cap main body and a cap bearing portion.

Fig. 10 is a perspective view showing a beverage container according to a second embodiment of the present invention.

Fig. 11 is a cross-sectional view showing a part of the beverage container, showing the closed state (closed position) of the lid body and the accommodated state of the ring member.

Fig. 12 is a cross-sectional view showing a part of the beverage container, showing the open state (open position) of the lid body and the open state of the ring member.

Fig. 13 is a side view showing a part of the beverage container, showing the closed state (closed position) of the lid body and the open state of the ring member.

Fig. 14 is a perspective view showing a part of the beverage container.

Fig. 15 is a partial sectional view (longitudinal sectional view) showing a part of the beverage container.

Fig. 16 is a partial sectional view (transverse sectional view) showing a part of the beverage container.

Fig. 17 is an exploded perspective view showing a cap unit.

Fig. 18 is an exploded perspective view showing a cap unit.

Fig. 19 is a perspective view showing a shaft cover of the first hinge (hinge).

Fig. 20 is a perspective view showing a part of the cap main body and a cap bearing portion.

Fig. 21 is a perspective view showing a part of the cap main body and a cap bearing portion.

Fig. 22 is a perspective view showing a part of a ring member and a ring bearing portion.

Explanation of reference signs

1A, 1B...container for beverage; 2c...mouth and neck; 2d...upper opening; 2A, 2B...container main body; 3A, 3B...cap unit; 9, 30...cap main body; , 33... ring parts; 11a, 33a... lower surface; 12... hinge; 15, 52, 53... cap bearing part; 15b, 56b... receiving recess; 16, 17, 56... ring bearing part; 16b... bearing sliding surface; 16c, 63... step part (click mechanism); 18, 57... hinge shaft; 19, 60... force application part; 20, 61... sealing part; 20c... sealing sliding surface; 20e, 62... convex part (click mechanism); 31...cover body; 31b...cover top wall; 32...first hinge (hinge); 36...port forming part; 37...liquid opening; 43...cap locking mechanism; 52e...cap end face; 54, 55...cap bearing 56c...ring end face; A...hinge central axis; T1...one side in the circumferential direction (tightening side); T2...the other side in the circumferential direction (loosening side).

Detailed ways

<First Embodiment>

A cap unit 3A according to a first embodiment of the present invention and a drink container 1A including the cap unit 3A will be described with reference to FIGS. 1 to 9 . In addition, in the following description, the cap unit 3A may be simply referred to as a cap, and the beverage container 1A may be simply referred to as a container.

As shown in FIGS. 1 and 2 , a beverage container 1A according to the present embodiment includes: a cap unit 3A; and a bottomed cylindrical container body 2A to which the cap unit 3A is attached. The cap unit 3A is detachably attached to the opening of the container body 2A, that is, the mouth and neck portion 2c by screwing.

The cap unit 3A has: a cylindrical cap body 9 with a top wall (upper wall), that is, a top cylindrical cap body 9; an inner plug portion 10, fixed with the cap body 9; a water-tight seal 14, which closes the container body 2A and the cap body 9 between them; an annular ring member 11; and a hinge 12 that connects the ring member 11 to the cap main body 9 so as to be rotatable around the hinge central axis A.

The cap unit 3A and the container body 2A are arranged coaxially with each other around the central axis C.

In this embodiment, the direction in which the central axis C extends is referred to as an up-down direction. Of the up-down directions, the direction from the bottom portion 2a of the container body 2A toward the top wall portion 9b of the cap body 9 is referred to as the upper side, and the direction from the top wall portion 9b toward the bottom portion 2a is referred to as the lower side.

The direction perpendicular to the central axis C is called a radial direction. In the radial direction, the direction close to 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 radially outer side or simply called the outer side.

In addition, the direction which passes the hinge 12 and the central axis C in a radial direction is called a front-back direction. Of the front-rear directions, the direction from the hinge 12 toward the central axis C is referred to as the front side, and the direction from the central axis C toward the hinge 12 is referred to as the rear side.

In addition, the direction orthogonal to the front-back direction in a radial direction is called a left-right direction. When viewing the beverage container 1A in an upright posture in which the top wall portion 9b of the cap main body 9 faces upward in the vertical direction as shown in FIG. The direction to the right is called the right side.

The direction surrounding the central axis C is called a circumferential direction. The circumferential direction corresponds to the direction in which the cap unit 3A is screwed to the container body 2A (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 in the screwing direction (the screwing release direction). Therefore, in this embodiment, one side T1 in the circumferential direction may be referred to as the tightening side T1 in the circumferential direction, and the other side T2 in the circumferential direction may be referred to as the loosening side T2 in the circumferential direction. More specifically, when viewing the beverage container 1A from above, one side in the circumferential direction (tightening side) T1 is clockwise around the central axis C, and the other side in the circumferential direction (loosening side) T2 is It is a counterclockwise direction centered on the central axis C.

In addition, the central axis C may also be referred to as the cap central axis C or the container central axis C differently from the hinge central axis A.

The hinge center axis A of the hinge 12 is arranged on the rear side of the center axis C. As shown in FIG. The central axis C and the hinge central axis A are in mutually twisted positions.

The direction in which the hinge center axis A extends is called the hinge axis. The hinge axis corresponds to the left-right direction. One side in the hinge axis corresponds to the right side, and the other side corresponds to the left side. The hinge central axis A extends in a direction tangential to an unillustrated imaginary circle centered on the central axis C. Therefore, one side in the hinge axial direction corresponds to the tightening side T1 in the circumferential direction, and the other side in the axial direction of the hinge corresponds to the loosening side T2 in the circumferential direction (see FIG. 6 ).

The direction perpendicular to the hinge central axis A is called the hinge radial direction. In the radial direction of the hinge, the direction close to the hinge central axis A is called the inner side of the hinge radial direction, and the direction away from the hinge central axis A is called the outer side of the hinge radial direction.

The direction around the hinge central axis A is referred to as the hinge circumferential direction.

As shown in FIG. 2 , the beverage container 1A can keep the beverage (liquid content, liquid) contained in the container main body 2A warm or cold by the container main body 2A having a vacuum heat insulation structure. The container main body 2A has a bottomed cylindrical shape with an open top. In addition, contents other than beverages can also be accommodated in the container main body 2A.

Specifically, the container main body 2A has a bottomed cylindrical outer container 4 and an inner container 5 made of, for example, stainless steel, and is formed by joining the mouths of each other while the inner container 5 is accommodated inside the outer container 4. It is composed of a double-layer structure container.

In addition, a vacuum heat insulating layer 6 is provided between the outer container 4 and the inner container 5 . The vacuum heat insulating layer 6 can be formed, for example, by closing an exhaust hole provided in the center of the bottom surface of the outer container 4 in a chamber depressurized (evacuated) to a high vacuum.

The container body 2A has: a substantially disc-shaped bottom portion 2a; a substantially cylindrical body portion 2b whose lower end is connected to the outer periphery of the bottom portion 2a; and a neck portion 2c disposed on the upper side of the body portion 2b, The diameter is smaller than that of the main body portion 2b.

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

The female thread portion 7 is disposed on the inner peripheral portion of the neck portion 2c.

The protruding portion 8 is disposed on the inner peripheral portion of the neck portion 2c, and is located below the internal thread portion 7. As shown in FIG. The protruding portion 8 protrudes radially inward from the inner peripheral surface of the mouth and neck portion 2c, and extends over the entire circumference in the circumferential direction. The protruding portion 8 has an annular shape centered on the central axis C, and protrudes most inwardly in the mouth and neck portion 2c.

The shoulder portion 2e is disposed on the outer peripheral portion of the mouth and neck portion 2c. The shoulder portion 2e has a tapered shape that decreases in diameter toward the upper side. A portion located above the shoulder portion 2e in the mouth and neck portion 2c has a substantially cylindrical shape extending in the vertical direction.

In addition, the beverage container 1A of the present embodiment has a substantially cylindrical appearance as a whole as shown in FIG. be changed. In addition, painting, printing, etc. may be performed on the respective outer surfaces (surfaces) of the container main body 2A, the cap main body 9, and the ring member 11 .

As shown in FIGS. 3 and 4 , the cap unit 3A is attached to the neck portion 2c of the container body 2A, and constitutes a plug that closes the upper opening portion 2d of the container body 2A. In addition, FIG. 3 is a cross-sectional view showing a housed state of the ring member 11 of the cap unit 3A, and FIG. 4 is a cross-sectional view showing an opened state of the ring member 11 of the cap unit 3A. Both FIGS. 3 and 4 are longitudinal cross-sectional views parallel to the central axis C (including the central axis C).

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

The peripheral wall portion 9a has a cylindrical shape extending in the vertical direction so as to be continuous with the main body portion 2b of the container main body 2A. Specifically, in the present embodiment, the peripheral wall portion 9 a 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 over the entire circumference in the circumferential direction from the radially outer side. The lower end of the peripheral wall portion 9a covers the shoulder portion 2e from the upper side.

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

The top wall portion 9b has an outer peripheral groove 9c. The outer peripheral groove 9c is arranged on the outer peripheral portion of the top wall portion 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 is annular with the center axis C as the center. The outer peripheral groove 9c has a substantially polygonal shape in plan view, and has a substantially quadrangular shape in this embodiment. The outer peripheral groove 9c is located on the upper end outer peripheral portion of the cap main body 9, and opens upward and radially outward.

As shown in FIGS. 3 and 4 , when viewed in a longitudinal section parallel to the central axis C, the wall surface (inner wall of the groove) of the outer peripheral groove 9 c extends downward as it goes radially outward. Specifically, in the present embodiment, the outer peripheral groove 9c has a concave curve shape when viewed in the longitudinal section. That is, the wall surface of the outer peripheral groove 9c is concavely curved.

The inner plug part 10 is made of heat-resistant resin such as polypropylene (PP), for example. The inner plug portion 10 is integrated with the cap body 9 to close the upper opening 2d. As shown in FIG. 3 , the inner plug portion 10 has a bottomed cylindrical shape, and is integrally attached to the lower surface of the top wall portion 9 b of the cap main body 9 by welding or the like. The inner plug portion 10 is disposed in the mouth and neck portion 2c of the container body 2A. A heat insulating material S is disposed inside the inner plug portion 10 . In addition, instead of the heat insulating material S, it is also possible to make the inside of the inner plug part 10 an air layer.

The inner plug portion 10 has an external thread portion 13 and a flange portion 10a.

The external thread portion 13 is provided on the outer peripheral surface of the internal plug portion 10 . In the beverage container 1A of the present embodiment, the inner plug portion 10 (cap unit 3A) is detachably attached to the container body 2A by screwing the male thread portion 13 and the female thread portion 7 .

The flange portion 10a protrudes radially outward from the lower end portion of the inner plug portion 10, and extends over the entire circumference in the circumferential direction. The flange portion 10a is arranged inside the protrusion portion 8 and faces the protrusion portion 8 in the radial direction.

The water-tight seal 14 is attached to the outer peripheral portion of the inner plug portion 10 . The water-tight seal 14 is an annular sealing member that seals between the container main body 2A and the inner plug portion 10 , and is made of, for example, heat-resistant rubber such as silicon rubber, or an elastic member such as an elastomer. On the inner peripheral portion of the water-tight packing 14 , an inner peripheral recessed portion 14 a recessed radially outward is provided over the entire circumference in the circumferential direction. The water stop packing 14 is attached to the inner plug part 10 by fitting the inner peripheral recessed part 14a into the flange part 10a.

On the outer peripheral surface of the water-tight packing 14, an elastic flange portion 14b is provided so as to protrude radially outward. The elastic flange part 14b is arrange|positioned at the outer peripheral part of the watertight packing 14, and extends over the whole circumference of a circumferential direction. Two elastic flange parts 14b are arranged in a row in the up-down direction. When the cap unit 3A is attached to the container main body 2A, the elastic flange portion 14b is elastically deformed to be in close contact with the protrusion 8 of the container main body 2A over the entire circumference. Thereby, the water-tight seal 14 can seal liquid-tightly between the protrusion part 8 (container main body 2A) and the inner plug part 10 (cap unit 3A).

The water stop packing 14 can be elastically deformed by stretching itself, and can be detached from the flange portion 10a. Thereby, the cap unit 3A and the water-tight packing 14 can be cleaned separately, and the space between the water-tight packing 14 and the inner plug portion 10 can be maintained hygienically.

In addition, the waterproof seal 14 is not limited to the above-mentioned shape, for example, the number of the elastic flange parts 14b is not limited to the above-mentioned two, and may be one or three or more. In addition, the waterproof packing 14 is not limited to the structure provided with the above-mentioned elastic flange part 14b, The shape etc. can be changed suitably.

In the beverage container 1A of the present embodiment, the cap main body 9 (cap unit 3A) can be moved as shown in FIG. 1 and FIG. The cap unit 3A is attached to the container body 2A by screwing the internal thread portion 7 and the external thread portion 13 by rotating one side (tightening side) T1 in the circumferential direction with respect to the container body 2A.

In addition, by rotating the cap main body 9 (cap unit 3A) to the other side (relaxed side) T2 in the circumferential direction relative to the container main body 2A from the state where the cap unit 3A is attached to the container main body 2A, the connection between the internal thread portion 7 and the external thread can be released. The screwing of the threaded portion 13 detaches the cap unit 3A from the container body 2A.

The ring member 11 is made of heat-resistant resin such as polypropylene (PP), for example. The ring member 11 has a ring shape centered on the central axis C. As shown in FIG. The ring member 11 has a substantially polygonal shape, and in this embodiment has a substantially quadrangular shape.

As shown in FIG. 3 , the ring member 11 is disposed on the upper side of the cap main body 9 . Specifically, in the accommodated state of the ring member 11 shown in FIG. 3 , the ring member 11 is arranged on the top wall portion 9b, more specifically, on the outer peripheral portion of the top wall portion 9b, that is, on the outer peripheral groove 9c. At least the lower portion of the ring member 11 is accommodated in the outer peripheral groove 9c.

The lower surface 11 a of the ring member 11 has a ring shape centered on the central axis C. As shown in FIG. The lower surface 11a of the ring member 11 is formed in a shape following the shape of the top wall portion 9b of the cap main body 9 that the lower surface 11a faces. That is, the lower surface 11a of the ring member 11 has a shape following the groove shape of the outer peripheral groove 9c. Specifically, in a longitudinal cross-sectional view shown in FIG. 3 , the lower surface 11 a of the ring member 11 extends upward as it goes radially inward. In this embodiment, the lower surface 11a of the ring member 11 has a convex curve shape when viewed in this longitudinal section. That is, the lower surface 11a of the ring member 11 is convexly curved.

The inner peripheral portion of the lower surface 11a of the ring member 11 faces the radially outer wall surface of the outer peripheral groove 9c. The inner peripheral portion of the ring member 11 and the above-mentioned wall surface of the outer peripheral groove 9c are fitted into each other. Since the ring member 11 and the outer peripheral groove 9c each have a polygonal shape, the ring member 11 and the outer peripheral groove 9c cannot rotate relative to each other in the circumferential direction by fitting them together.

The outer peripheral surface 11b of the ring member 11 extends radially inward as it goes upward. That is, the outer peripheral surface 11b of the ring member 11 has a tapered surface shape whose diameter decreases toward the upper side. In the present embodiment, the outer peripheral surface 11 b of the ring member 11 is disposed substantially flush with the peripheral wall portion 9 a so as to be continuous with the outer peripheral surface of the peripheral wall portion 9 a of the cap main body 9 .

The ring member 11 has a planar portion 11c and a concave portion 11d on its upper surface.

The flat portion 11c is arranged on the outer peripheral portion of the upper surface of the ring member 11 . The planar portion 11c is annular with the center axis C as the center. The planar portion 11c has a substantially planar shape extending in a direction perpendicular to the central axis C. As shown in FIG.

The concave portion 11d is disposed on a portion of the upper surface of the ring member 11 other than the outer peripheral portion, that is, a portion located inside the flat portion 11c. The concave portion 11d is recessed further downward than the flat portion 11c. 11 d of concave parts are ring-shaped centering on the central axis C. As shown in FIG. The concave portion 11 d extends upward as it goes radially outward in a longitudinal cross-sectional view shown in FIG. 3 . Specifically, the concave portion 11d has a concave curved shape when viewed in the longitudinal section. That is, the concave portion 11d has a concave curved shape. The inner peripheral portion of the concave portion 11d is formed to be smoothly connected to a portion of the top wall portion 9b located inside the outer peripheral groove 9c.

In the present embodiment, the lower portion of the ring member 11 is disposed in the outer peripheral groove 9c, the outer peripheral surface 11b is formed continuously with the peripheral wall portion 9a, and the concave portion 11d is formed continuously with the inner portion of the top wall portion 9b. The ring member 11 has improved appearance.

In addition, since the outer surface (surface) of the ring member 11 is provided with irregularities, when the ring member 11 is opened as shown in FIG. .

The hinge 12 connects the rear portion of the cap main body 9 and the rear portion of the ring member 11 so as to be relatively rotatable in the hinge circumferential direction. The hinge 12 includes an elastic mechanism including a biasing portion 19 and an enclosing portion 20 which will be described later. The hinge 12 is formed centering on the hinge central axis A and extending in the hinge axial direction.

As shown in FIGS. 5 to 9 , the hinge 12 has a cap bearing portion 15 , ring bearing portions 16 , 17 , a biasing portion 19 , a sealing portion 20 , and a hinge shaft 18 . In addition, FIG. 6 shows a cross section (longitudinal cross section) of the hinge 12 parallel to the central axis C of the cap unit 3A. In the exploded perspective views of the cap unit 3A shown in FIGS. 7 and 8 , the arrangement order of the components and the arrangement relationship of the components after assembly (assembled state) are partially different.

One of the cap bearing part 15 and the ring bearing part 16, 17 is provided with two spaced apart from each other in the hinge axial direction, and the other of the cap bearing part 15 and the ring bearing part 16, 17 is between the two above-mentioned ones. There is 1 configuration. In this embodiment, two of the ring bearings 16, 17 of the block bearing portion 15 and the ring bearing portions 16, 17 are arranged at a distance from each other in the hinge axial direction, and the block bearing portion 15 is located between the two ring bearing portions. Room 16 and Room 17 are equipped with one.

The cap bearing portion 15 protrudes upward from the upper end portion of the peripheral wall portion 9 a of the cap main body 9 toward the rear side. That is, the cap bearing portion 15 is provided on the cap main body 9 . The cap bearing portion 15 and the cap main body 9 are integrally formed by a single component. The cap bearing portion 15 has a substantially cylindrical shape extending in the hinge axial direction. The cap bearing portion 15 is located at the central portion in the left-right direction in the rear portion of the cap main body 9 . The cap bearing portion 15 is located in the hinge axial center portion of the hinge 12 .

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

In this embodiment, the receiving recessed portion 15b is recessed in the cap bearing portion 15 and extends in the axial direction of the hinge. Specifically, the accommodating recessed portion 15b is a multi-stage circular hole centered on the hinge central axis A, and is opened on the end face of the cap bearing portion 15 facing one side of the hinge axial direction, and is opened from the end face toward the other side of the hinge axial direction. extend.

The housing recess 15b has a large-diameter hole 15f and a small-diameter hole 15e.

The large-diameter hole portion 15f has a circular hole shape and is opened on the end surface of the cap bearing portion 15 facing the hinge axial direction. The large-diameter hole portion 15f is arranged at one side of the hinge axial direction in the accommodation recessed portion 15b.

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

The arm receiving part 15c is arranged in the receiving recessed part 15b, and is in the shape of a groove extending in the hinge axial direction. Specifically, the arm receiving portion 15c is recessed outward in the hinge radial direction from the inner peripheral surface of the large-diameter hole portion 15f, and extends in the hinge axial direction.

The sliding contact surface 15 d is disposed on the end surface of the cap bearing portion 15 facing the other side in the hinge axial direction. The sliding contact surface 15d has a planar shape extending in a direction perpendicular to the hinge central axis A. As shown in FIG.

The shaft hole 15a is in the shape of a circular hole extending in the axial direction of the hinge. The inner diameter of the shaft hole 15a is smaller than that of the housing recess 15b, specifically, the inner diameter is smaller than that of the small-diameter hole 15e. An end portion on one side in the hinge axial direction of the shaft hole 15a is opened to the bottom surface of the small-diameter hole portion 15e. The other end portion of the shaft hole 15a in the hinge axial direction opens to the sliding contact surface 15d.

As shown in FIGS. 6 to 8 , the ring bearings 16 and 17 are provided on the ring member 11 and arranged adjacent to the cap bearing 15 in the hinge axial direction. The ring bearing portions 16, 17 and the ring member 11 are integrally formed by a single member. In this embodiment, two ring bearing portions 16 and 17 are provided.

The two ring bearings 16 and 17 include a first ring bearing 16 and a second ring bearing 17 . The first ring bearing portion 16 is arranged on one side of the hinge axial direction among the two ring bearing portions 16 and 17 . The second ring bearing portion 17 is disposed on the other side of the two ring bearing portions 16 , 17 in the hinge axial direction.

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

The first ring 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 arrange|positioned at the 1st ring bearing part (ring bearing part) 16. As shown in FIG.

The bearing sliding surface 16 b is disposed on the other end surface of the first ring bearing portion 16 facing the hinge axial direction. The bearing sliding surface 16b has a planar shape extending in a direction perpendicular to the hinge central axis A. As shown in FIG.

In this embodiment, the bearing sliding surface 16b has a stepped portion 16c. The stepped portion 16c is concave from the bearing sliding surface 16b to one side in the hinge axial direction. The stepped portion 16c is disposed on a part of the bearing sliding surface 16b in the hinge circumferential direction. Specifically, in the present embodiment, when the ring member 11 is in the accommodated state, the stepped portion 16c is arranged at the lower end portion of the bearing sliding surface 16b.

The shaft hole 16a penetrates through the first ring bearing portion 16 in the hinge axial direction. The other end portion of the shaft hole 16a in the hinge axial direction opens to the bearing sliding surface 16b. The shaft hole 16a is in the shape of a multistage circular hole extending in the axial direction of the hinge. The inner diameter dimension of the shaft hole 16a other than the end portion on one side in the hinge axial direction is smaller than the end portion on the one side in the hinge axial direction.

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

The second ring bearing portion 17 has a sliding contact convex portion 17b, a contact surface 17c, and a shaft hole 17a.

The sliding contact convex portion 17 b is located at the end portion of the second ring bearing portion 17 on one side in the hinge axial direction. The sliding contact protrusion 17b protrudes from the second ring bearing portion 17 except for the hinge axial end, that is, the portion other than the sliding contact protrusion 17b to the hinge axial side. The sliding contact protrusion 17b has a cylindrical shape extending in the hinge axial direction. The outer diameter dimension of the sliding contact convex portion 17 b is smaller than that of the portion other than the sliding contact convex portion 17 b in the second ring bearing portion 17 .

The contact surface 17c is arranged on the end surface of the second ring bearing portion 17 facing the hinge axial direction. In this embodiment, the contact surface 17c is arranged on the end surface of the sliding contact convex portion 17b facing the hinge axial side. The contact surface 17c has a planar shape extending in a direction perpendicular to the hinge center axis A. As shown in FIG. The contact surface 17c is in slidable contact with the sliding contact surface 15d of the cap bearing portion 15 .

The shaft hole 17a penetrates through the second ring bearing portion 17 in the hinge axial direction. One end portion of the shaft hole 17a in the hinge axial direction opens to the contact surface 17c. The shaft hole 17a is in the shape of a multistage circular hole extending in the axial direction of the hinge. In the shaft hole 17a except for the end portion on the other side in the hinge axial direction, the inner diameter dimension is smaller than the end portion on the other side in the hinge axial direction.

The biasing portion 19 is elastically deformable. Specifically, in the present embodiment, the urging portion 19 has a helical shape centered on the hinge center axis A, and is a metal compression coil spring elastically deformable in the hinge axis direction. The urging part 19 is accommodated in the accommodation recessed part 15b. The urging part 19 is arrange|positioned over the small-diameter hole part 15e and the large-diameter hole part 15f of the accommodation recessed part 15b. The other end portion in the hinge axial direction of the urging portion 19 is in contact with the bottom surface of the small-diameter hole portion 15e. One end in the hinge axial direction of the urging portion 19 is in contact with an end surface (an urging portion abutting surface 20 d described later) facing the other side in the hinge axial direction of the enclosing portion 20 .

The urging portion 19 urges the first ring bearing portion 16 toward one side in the hinge axial direction with respect to the cap bearing portion 15 via the sealing portion 20 . That is, the urging portion 19 urges the ring member 11 toward one side in the hinge axial direction with respect to the cap main body 9 . In addition, the urging portion 19 allows the ring member 11 to be displaced to the other side in the hinge axial direction relative to the cap main body 9 by elastically deforming.

The enclosing portion 20 has a substantially cylindrical shape extending in the hinge axial direction. The enclosing portion 20 is arranged on the other side of the first ring bearing portion 16 in the hinge axial direction, and is arranged on one side of the hinge axial direction of the biasing portion 19 . The enclosing part 20 is interposed between the first ring bearing part 16 and the force applying part 19 in the hinge axial 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. Thereby, the sealing part 20 seals the urging part 19 in the accommodation recessed part 15b. A portion of the enclosing portion 20 other than the portion inserted into the housing recess 15b is exposed to the outside between the first ring bearing portion 16 and the cap bearing portion 15 .

In this embodiment, at least a part of the enclosing part 20 (the end on the other side of the hinge axis) is inserted into the receiving recess 15b, so that the enclosing part 20 is not completely detached from the receiving recess 15b, thereby being enclosed in the receiving recess 15b. The inner biasing portion 19 is not exposed to the outside. Therefore, the urging part 19 cannot be seen from the external appearance, and can have a favorable appearance.

The encapsulation part 20 can suitably use a material different from that of the first ring bearing part 16, such as polyacetal (POM), acrylonitrile-butadiene-styrene (ABS), etc., which have a lower wear resistance than the first ring bearing part. 16 excellent textured materials.

In the cap unit 3A of the present embodiment, the enclosing portion 20 having excellent wear resistance is formed separately from the first ring bearing portion 16 , so that the durability of the hinge 12 can be improved.

The sealing part 20 has an arm part 20b, a sealing sliding surface 20c, a urging 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 enclosing portion 20 , and has a strip shape extending in the hinge axial direction. The arm portion 20b is inserted into the arm receiving portion 15c of the cap bearing portion 15 shown in FIGS. 7 and 9 . The arm portion 20b is fitted to the arm receiving portion 15c so as to be slidable in the hinge axial direction. By inserting the arm portion 20b into the arm receiving portion 15c, the sealing portion 20 is restricted from rotating in the hinge circumferential direction with respect to the cap bearing portion 15, and is allowed to slide in the hinge axial direction.

As shown in FIGS. 6 and 7 , the enclosed sliding surface 20 c is disposed on the end surface of the enclosed portion 20 facing the hinge axial direction. The enclosing sliding surface 20c has a planar shape extending in a direction perpendicular to the hinge central axis A. As shown in FIG. The sealing sliding surface 20c is in slidable contact with the bearing sliding surface 16b of the first ring bearing portion 16 .

In this embodiment, the sealing sliding surface 20c has a convex part 20e. The convex portion 20e has a convex shape protruding from the sealing sliding surface 20c to one side in the hinge axial direction. The convex part 20e is arrange|positioned at the part of hinge circumferential direction enclosed in the sliding surface 20c. In this embodiment, the convex part 20e is arrange|positioned at the lower end part of the sealing sliding surface 20c. When the ring member 11 is in the accommodated state, the convex portion 20e faces the stepped portion 16c in the hinge axial direction, and is detachably locked in the stepped portion 16c.

During the transition of the ring member 11 from the stored state of the ring member 11 to the opened state, the convex portion 20 e can overcome the urging force of the urging portion 19 and pass over the step portion 16 c around the hinge central axis A. Specifically, in the above process, by making the convex portion 20e contact the wall portion located at the end portion in the hinge circumferential direction of the stepped portion 16c, a force is generated to displace the enclosing portion 20 toward the other side in the hinge axial direction, so that The biasing portion 19 is elastically deformed. The biasing portion 19 is elastically deformed so that the enclosing portion 20 is displaced to the other side in the hinge axial direction, and the protrusion 20e climbs over the above-mentioned wall portion of the step portion 16c in the hinge circumferential direction and separates from the step portion 16c. In addition, at this time, the convex portion 20e is in slidable contact with a portion of the bearing sliding surface 16b other than the step portion 16c.

In addition, contrary to the above, in the process of returning the ring member 11 from the open state to the stored state, the step portion 16c moves (rotates) in the hinge circumferential direction relative to the convex portion 20e, and when they are opposite to each other in the hinge axial direction When the position is set, the biasing portion 19 undergoes recovery deformation, the sealing portion 20 is displaced toward one side in the hinge axial direction, and the convex portion 20e is inserted (locked) into the stepped portion 16c again.

That is, in this embodiment, the hinge 12 has a click mechanism including a stepped portion 16c and a convex portion 20e, and the click mechanism provides a click feeling when the ring member 11 rotates in the opening direction or the closing direction around the hinge center axis A.

As shown in FIGS. 6 and 8 , the urging portion contact surface 20 d is arranged on the other end surface of the enclosing portion 20 facing the hinge axial direction. The urging part abutting surface 20d has a planar shape extending in a direction perpendicular to the hinge central axis A. As shown in FIG. The urging portion abutting surface 20 d abuts on one end portion of the urging portion 19 in the hinge axial direction.

The shaft hole 20a penetrates the sealing part 20 in the hinge axial direction. An end portion on one hinge axial side of the shaft hole 20a opens to the sealing sliding surface 20c. The other end portion of the shaft hole 20 a in the hinge axial direction is opened to the urging portion abutting surface 20 d. The shaft hole 20a is in the shape of a circular hole extending in the hinge axial direction.

The hinge shaft 18 has a cylindrical shape centered on the hinge center axis A and extends upward in the hinge axis. The hinge shaft 18 is made of metal, and is inserted into the cap bearing part 15 , the pair of ring bearing parts 16 and 17 , the biasing part 19 and the sealing part 20 . The hinge shaft 18 pivotally supports the cap bearing portion 15 and the ring bearing portions 16 and 17 so as to be relatively rotatable around the hinge center axis A. As shown in FIG.

According to the cap unit 3A and the beverage container 1A of the present embodiment described above, the ring member 11 is connected to the cap body 9 via the hinge 12 , that is, the ring member 11 is rotatable about the hinge central axis A. Therefore, the ring member 11 can be brought into an open state or a housed state according to usage conditions, etc., and the posture of the ring member 11 can be appropriately selected, and the convenience is high. In particular, in the open state of the ring member 11, the user can easily carry the finger through the ring member 11, and in the stored state of the ring member 11, it is possible to suppress the enlargement of the upper part of the cap (the upper part of the container) and facilitate storage in the bag. wait.

Further, the urging portion 19 of the hinge 12 always urges the ring member 11 toward one side in the hinge axial direction. Therefore, for example, when the user carries the ring member 11 with his fingers or the drink container 1A drops, etc., even if a force is applied to the ring member 11 toward the other side of the hinge axial direction, the force applying portion 19 can The force is elastically deformed to absorb the force, so that the force is not easily transmitted to the cap main body 9 . Thereby, the rotation of the cap unit 3A in the circumferential direction (the unscrewed direction) by the above-mentioned force can be suppressed, and the screwed state of the cap unit 3A and the container main body 2A can be maintained satisfactorily.

Specifically, in this embodiment, one side of the hinge axis corresponds to the circumferential fastening side T1 where the cap unit 3A and the container body 2A are screwed together, and the other side of the hinge axis corresponds to the circumferential loosening. Side T2.

In this case, when a force (rotational force) toward the loose side T2 (the other side in the hinge axial direction) in the circumferential direction where the cap unit 3A and the container body 2A are screwed acts on the ring member 11 , it is absorbed by the biasing portion 19 . This force can suppress the above-mentioned loosening of the screwing. Therefore, the beverage in the container main body 2A is suppressed from leaking out of the container due to the aforementioned loosening of the screwing.

In addition, in this embodiment, two of the ring bearings 16, 17 of the block bearing portion 15 and the ring bearing portions 16, 17 are provided at intervals in the hinge axial direction, and the block bearing portion 15 is provided on two rings. One is arranged between the bearing parts 16 and 17 . That is, one side of the cap bearing part 15 and the ring bearing parts 16, 17 is provided with two spaced apart from each other in the hinge axial direction, and the other side of the cap bearing part 15 and the ring bearing parts 16, 17 is arranged above the two. There is 1 set between one side.

In this case, it is possible to stably increase the strength of the hinge 12 while exerting the above-mentioned effects by the urging portion 19 of the hinge 12 .

In addition, in this embodiment, the hinge 12 has: the accommodation recessed part 15b; and the sealing part 20 which seals the biasing part 19 in the accommodation recessed part 15b.

In this case, the urging portion 19 can be enclosed in the housing recess 15b by the sealing portion 20, so that the urging portion 19 can be suppressed from being exposed to the outside, and the appearance design of the cap unit 3A and the beverage container 1A can be improved. In addition, by enclosing the urging part 19 , for example, it is possible to prevent the function of the urging part 19 from being degraded or unstable due to adhesion of dirt or the like.

In addition, in this embodiment, as the click mechanism of the hinge 12, the bearing sliding surface 16b has a step portion 16c, and the sealing sliding surface 20c has a convexity that can overcome the urging force of the biasing portion 19 and go over the step portion 16c around the hinge central axis A. Section 20e.

In this case, when the user rotates the ring member 11 around the hinge central axis A, the convex portion 20e overcomes the urging force of the urging portion 19 and overcomes the step portion 16c, so that the user can feel a click. By obtaining a click feeling, the user can visually recognize in what state the rotation operation of the ring member 11 is.

Specifically, in this embodiment, when the ring member 11 is in the accommodated state, when the ring member 11 is rotated in the opening direction, the convex portion 20e relatively goes over the step portion 16c in the hinge circumferential direction to obtain a click feeling, which can It is recognized perceptually that the turning operation is started. In addition, when the ring member 11 in the stored state is rotated in the opening direction, resistance due to an urging force is generated when the convex portion 20e passes over the step portion 16c, so that the ring member 11 can be suppressed from unintentionally rotating in the opening direction.

In addition, in the present embodiment, the stepped portion 16c is formed as a mechanism that passes over the convex portion 20e (that is, the stepped portion 16c engages with the convex portion 20e) immediately before the ring member 11 is in the stored state, but it can be adjusted by adjusting the stepped portion 16c and Each position of the convex portion 20e is freely set over the position (engagement position). For example, the stepped portion 16c may be configured so that it passes over the convex portion 20e immediately before the ring member 11 is opened and turned rearward to the limit.

In addition, in this embodiment, the lower surface 11 a of the ring member 11 is formed in a shape following the shape of the top wall portion 9 b of the cap main body 9 that the lower surface 11 a faces.

Specifically, in the present embodiment, the outer peripheral groove 9c of the top wall portion 9b facing the lower surface 11a of the ring member 11 has a concave curved surface shape, and the lower surface 11a of the ring member 11 has a concave curved surface modeled on the outer peripheral groove 9c. Convex shape.

In this case, the lower surface 11 a of the ring member 11 can be arranged so as to be in close contact with the outer peripheral groove 9 c of the top wall portion 9 b of the cap main body 9 . That is, when the ring member 11 is in the housed state, it is well housed in the outer peripheral groove 9c. Therefore, it is easy to stabilize the posture of the ring member 11 in the accommodated state. In addition, since the ring member 11 is brought into close contact with the outer peripheral groove 9c of the top wall portion 9b, it is possible to suppress an increase in the size of the cap unit 3A in the vertical direction as a whole, and further facilitate downsizing.

In addition, in this embodiment, the outer peripheral groove 9c of the cap main body 9 has a polygonal shape, the ring member 11 has a polygonal shape, and the inner peripheral portion of the ring member 11 is fitted into the inner peripheral portion of the outer peripheral groove 9c.

In this case, when the ring member 11 is in the accommodated state, the rotation of the ring member 11 in the circumferential direction relative to the cap main body 9 is restricted. Therefore, in the accommodated state of the ring member 11, for example, when the user rotates the cap unit 3A to the loose side T2 in the circumferential direction to remove the cap unit 3A from the container body 2A, even if the user holds the cap unit together with the ring member 11 with the palm, By rotating the unit 3A, it is also possible to suppress an excessive load from being applied to the urging portion 19 of the hinge 12 or the like. Therefore, the function of the above-mentioned hinge 12 can be maintained favorably over a long period of time.

<Second Embodiment>

Next, a cap unit 3B according to a second embodiment of the present invention and a beverage container 1B including the cap unit 3B will be described with reference to FIGS. 10 to 22 . In addition, in this embodiment, the same name, code|symbol, etc. are attached|subjected to the same structure as the above-mentioned embodiment, and description may be abbreviate|omitted.

As shown in FIGS. 10 and 11 , the beverage container 1B of this embodiment includes: a cap unit 3B; and a bottomed cylindrical container body 2B to which the cap unit 3B is attached. The cap unit 3B is detachably attached to the mouth and neck portion 2c of the container body 2B which is opened at the top by screwing. The cap unit 3B constitutes a plug that closes the upper opening 2d of the container body 2B.

The neck portion 2c of the container body 2B of the present embodiment has an external thread portion 35 . The external thread part 35 is arrange|positioned at the outer peripheral part of the neck part 2c.

The cap unit 3B is equipped with: a cap main body 30 with a top cylindrical shape, which accommodates the upper opening 2d of the occluder main body 2B; a mouth forming member 36, which has a liquid port 37 communicating with the inside of the container main body 2B, and is installed on the cap main body 30 The mouth dismounting mechanism 38 is used to install the mouth forming part 36 on the cap main body 30 in a detachable manner; the water stop seal 39 is used to close the container body 2B and the mouth forming part 36; there is a top cylindrical cover body 31, arranged on the upper side of the cap main body 30 and the mouth forming part 36, covering the liquid port 37; the annular ring part 33, arranged on the upper side of the cover body 31; the first hinge (hinge) 32, the cover body 31 And the ring member 33 is connected to the cap main body 30 so as to be rotatable around the hinge central axis A;

In this embodiment, the longitudinal sectional view of the cap unit 3B shown in FIG. 11 shows the closed state (closed position) of the lid body 31 and the accommodated state of the ring member 33, and the longitudinal sectional view of the cap unit 3B shown in FIG. The open state (open position) of body 31 and the open state of ring member 33, the side view of cap unit 3B shown in FIG.

As shown in FIGS. 10 and 15 , in this embodiment, one side of the hinge axis corresponds to the circumferential fastening side T1 where the cap unit 3B and the container body 2B are screwed together, and the other side of the hinge axis Corresponds to the loose side T2 in the circumferential direction.

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

The internal thread part 34 is provided in the inner peripheral surface of the peripheral wall part 30a. The internal thread portion 34 is screwed to the external thread portion 35 of the neck portion 2c. Thus, the cap main body 30 is detachably attached to the mouth and neck portion 2c of the container main body 2B by screwing.

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

The mouth forming member 36 has: a bottom wall portion 36a formed with a liquid port 37; a cylindrical peripheral wall portion 36b standing upward from around the bottom wall portion 36a; a lower flange portion 36c extending from the bottom wall portion 36a. The lower end portion expands radially outward; a pair of upper flange portions (not shown in the figure) protrude from the outer peripheral surface of the peripheral wall portion 36b to the left and right respectively, and extend in the front-rear direction; and a chamfered drinking mouth The portion 36e is provided at the upper end opening edge of the peripheral wall portion 36b, and extends downward from the front end portion of the upper end opening edge toward the rear side.

A port detachable mechanism 38 for detachably attaching the port forming member 36 to the opening 30 b of the cap body 30 is provided between the cap main body 30 and the port forming member 36 . As the mouth detachment mechanism 38, for example, the structure described in Japanese Patent No. 5312542 can be used, and its detailed description will be omitted in this embodiment. In addition, the mouth forming member 36 may be detachable from the cap main body 30 or may be integrated with the cap main body 30 .

The water stop packing 39 is detachably attached to the lower flange portion 36c of the port forming member 36 . The watertight seal 39 is an annular sealing member for sealing between the protrusion 8 (container body 2B) and the mouth forming member 36 . The water-tight packing 39 is made of, for example, heat-resistant rubber such as silicon rubber, or elastic members such as elastomers. The water stop packing 39 is fitted in the outer peripheral portion of the lower flange portion 36c.

When fitted into the upper opening portion 2d of the container body 2B, the waterproof seal 39 is elastically deformed to be in close contact with the protrusion 8 of the container body 2B over the entire circumference. Thereby, it is possible to close the gap between the protruding portion 8 and the mouth forming member 36 .

The cover body 31 is made of heat-resistant resin such as polypropylene (PP), for example. The lid body 31 opens and closes the liquid passage port 37 which is the drinking port or the pouring port of the mouth forming member 36 . As shown in FIG. 11 , the cover body 31 is disposed between the cap main body 30 and the ring member 33 in the vertical direction.

The lid 31 is biased toward the liquid passage 37 of the opening forming member 36 , that is, in the opening direction, by a torsion spring (lid biasing portion) 42 described later provided on the first hinge 32 . The lid body 31 is rotatably connected to the cap main body 30 via the first hinge 32 in a state biased in an opening direction about the hinge center axis A. As shown in FIG.

The lid body 31 has: a lid peripheral wall portion 31a formed in a substantially cylindrical shape continuous with the peripheral wall portion 30a of the cap main body 30; a lid top wall portion 31b connected to the upper end portion of the lid peripheral wall portion 31a; and a cylindrical inner wall. The portion 31c protrudes downward from the cover top wall portion 31b.

Inside the cover body 31 is provided a cover seal 40 for closing the liquid passage port 37 of the port forming member 36 . That is, the lid body 31 has a lid seal 40 . The cap packing 40 is a plug-shaped sealing member for closing the liquid communication port 37 . The lid packing 40 is composed of an elastic member, and the same material as that of the above-mentioned water-tight packing 39 can be used.

The cap packing 40 has a substantially bottomed cylindrical shape, and is detachably attached to the inner wall portion 31c in a state where the inner wall portion 31c is fitted therein. The bottom surface (lower surface) of the lid packing 40 is formed in a dome shape convex downward.

In the cap unit 3B, when the cap body 31 closes the upper portion of the cap main body 30 , the cap packing 40 elastically deforms to be in close contact with the periphery of the liquid communication port 37 . Accordingly, the liquid passage port 37 of the port forming member 36 can be blocked.

When attached to the inner wall portion 31c, the cap seal 40 is elastically deformed so as to expand its diameter, tightly fits the inner wall portion 31c inside, and is fixed to the inner wall portion 31c in close contact. Therefore, in the closed position of the lid body 31, even if the container body 2B becomes a negative pressure and a tensile force toward the inside of the container body 2B acts on the lid seal 40, the opening of the lid body 31 can be suppressed. The hour cover seal 40 comes off from the inner wall portion 31c. Therefore, when the lid body 31 is opened, the liquid communication port 37 can be stably uncapped.

The lid top wall portion 31b has a concave portion 31d recessed downward from the upper surface of the lid top wall portion 31b. The cover member 41 which covers the inner wall part 31c from the upper side is attached to the recessed part 31d. That is, the cover body 31 has a cover member 41 . The cover member 41 is formed in a substantially disc shape using the same material as that of the lid body 31 .

The cover member 41 is not limited to the same material as that of the lid body 31 , and a material different in material, color, etc. may be used, or a material made of a transparent material may be used. In addition, a three-dimensional structure may be arranged on the upper portion of the cover member 41, and marking may be performed on the upper surface. Thereby, the cap unit 3B having an excellent design can be obtained.

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

As shown in Figure 11, the cover locking mechanism 43 is at the position where the cover body 31 blocks the liquid port 37, that is, the blocking position of the cover body 31 overcomes the force of the torsion spring 42 described later to lock the cover body 31 relative to the cap. The main body 30 is fixed.

Specifically, the cap lock mechanism 43 includes: a lock member 45 rotatably attached to the cap main body 30 via a second hinge 44 ; and a ring stopper 46 rotatably attached to the cap via the second hinge 44 . Subject 30. In addition, the hinge central axis (not shown) of the second hinge 44 extends in the left-right direction.

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

A hook portion 47 is provided at a front end portion of the first extension portion 45 a (upper end portion of the lock member 45 ) so as to protrude toward the rear side. An elastic member (spring member) 48 is arranged between the second extension portion 45b and the peripheral wall portion 30a in a compressed state in the front-rear direction. The elastic member 48 urges the second extension portion 45b toward the front side.

As shown in FIG. 10 , the ring stopper 46 is a member extending curvedly in a substantially semicircular shape, and its both ends are rotatably supported by the second hinge 44 . As a result, the ring stopper 46 can rotate in the vertical direction around the second hinge 44 .

In addition, as shown in FIG. 11 , the cover lock mechanism 43 has: a lock receiving portion 49 to which the hook portion 47 of the lock member 45 engages; and a stopper receiving portion 50 to which the ring stopper 46 engages. The lock receiving portion 49 is constituted by a claw 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 stopper receiving portion 50 has a shape fitted into the inner peripheral portion of the ring stopper 46, and protrudes forward from a position surrounding the lock receiving portion (claw portion) 49 in the front end portion of the cover peripheral wall portion 31a. The set wall constitutes.

In the cap lock mechanism 43, when the cap body 31 closes the upper portion of the cap body 30, the hook portion 47 of the locking member 45 is engaged with the lock receiving portion 49, thereby keeping the cap body 31 blocking the upper portion of the cap body 30. status. From this state, the user presses and operates the second extension portion 45b of the locking member 45 to the rear side against the force of the elastic member 48, so that the locking member 45 rotates around the second hinge 44 and the first extension portion 45a is displaced to the front side, The locked state of the hook portion 47 with respect to the lock receiving portion 49 is released. Thereby, as shown in FIG. 12 , the cover body 31 can be rotated in the opening direction by the urging force of the torsion spring 42 in the first hinge 32 .

In addition, as shown in FIG. 11 , in the cap lock mechanism 43 , when the cap body 31 closes the upper part of the cap body 30 , the ring stopper 46 is hooked to the stopper receiving portion 50 , so that the cap body 31 moves toward the cap body 30 . Rotation in opening direction is blocked. Accordingly, in the cover lock mechanism 43 , it is possible to prevent the cover 31 from being opened due to unnecessary (unintended) operation of the lock member 45 or the like.

The ring member 33 is made of heat-resistant resin such as polypropylene (PP), for example. As shown in FIG. 14 , the ring member 33 has a ring shape, and in this embodiment, has a substantially ring-shaped plate shape. As shown in FIG. 11 , the ring member 33 is arranged on the upper side of the cap main body 30 and the lid body 31 . Specifically, in the accommodated state of the ring member 33 shown in FIG. 11 , the ring member 33 is arranged on the lid top wall portion 31b, more specifically, on the outer peripheral portion of the lid top wall portion 31b, that is, on the tapered surface. on 31e.

The lower surface 33 a of the ring member 33 is formed in a shape following the shape of the lid top wall portion 31 b of the lid body 31 facing the lower surface 33 a. That is, the lower surface 33a of the ring member 33 has a tapered shape following the tapered shape of the tapered surface 31e, that is, is formed in an inverted tapered surface shape matching the tapered surface 31e. Specifically, the lower surface 33 a of the ring member 33 has a tapered shape that inclines downward as it goes radially outward.

The upper surface 33b of the ring member 33 has a tapered shape inclined downward as it goes radially outward. Therefore, in the accommodated state of the ring member 33, for example, when the user rotates the cap unit 3B in the circumferential direction to attach or detach it to the container body 2B, the user can easily grasp the cap unit 3B together with the ring member 11 with the palm, and easily rotate the cap unit 3B. .

The first hinge (hinge) 32 connects the rear portion of the cap main body 30 and the rear portion of the lid body 31 so as to be relatively rotatable in the hinge circumferential direction. In addition, the first hinge 32 connects the rear part of the cap main body 30 and the rear part of the ring member 33 so as to be relatively rotatable in the hinge circumferential direction. That is, the first hinge 32 connects the cap main body 30 , the lid body 31 , and the ring member 33 so as to be relatively rotatable around the hinge central axis A. As shown in FIG. The first hinge 32 includes an elastic mechanism including a biasing portion 60 and an enclosing portion 61 which will be described later. The first hinge 32 is formed centering on the hinge central axis A and extending in the hinge axial direction.

As shown in FIGS. 14 to 22, the first hinge 32 has cap bearing portions 52, 53, cap bearing portions 54, 55, ring bearing portion 56, urging portion (ring member urging portion) 60, enclosing portion 61, shaft Cover 58 , facing member 59 , torsion spring (lid body urging portion) 42 , and hinge shaft 57 . 15 shows a cross section (longitudinal section) of the first hinge 32 parallel to the central axis C of the cap unit 3B, specifically, a longitudinal sectional view of the first hinge 32 including the hinge central axis A. 16 shows a cross section (cross section) of the first hinge 32 perpendicular to the central axis C of the cap unit 3B, specifically, a cross sectional view of the first hinge 32 including the hinge central axis A. In the exploded perspective view of the cap unit 3B shown in FIGS. 17 and 18 , the arrangement order of the components and the arrangement relationship of the components after assembly (assembled state) are partially different.

One of the cap bearing portions 52, 53 and the ring bearing portion 56 is provided at a distance from each other in the hinge axial direction, and the other of the cap bearing portions 52, 53 and the ring bearing portion 56 is located between the two above-mentioned ones. There is 1 configuration. In this embodiment, two of the cap bearings 52, 53 and the ring bearings 56 are provided at a distance from each other in the hinge axial direction, and the ring bearing 56 is located between the two cap bearings. Room 52 and Room 53 are equipped with one.

As shown in FIGS. 17 , 18 , 20 and 21 , the cap bearing portions 52 , 53 protrude from the rear end portion of the top wall portion 30 c of the cap body 30 toward the rear side and upward. That is, the cap bearing portions 52 and 53 are provided on the cap main body 30 . The cap bearing portions 52, 53 and the cap main body 30 are integrally formed by a single component. In this embodiment, two cap bearing portions 52 and 53 are provided.

The two cap bearings 52 and 53 include a first cap bearing 52 and a second cap bearing 53 .

The first cap bearing portion 52 is arranged on one side of the hinge axial direction among the two cap bearing portions 52 and 53 .

The second cap bearing portion 53 is arranged on the other side of the hinge axial direction among the two cap bearing portions 52 , 53 .

The first cap bearing portion 52 has a substantially cylindrical shape extending in the hinge axial direction. 15, 16, 20 and 21, the first cap bearing portion 52 has a receiving hole 52b, a cap end surface 52e, a shaft hole 52a, a groove 52c, and a shaft protrusion locking portion 52d.

The receiving hole portion 52b is in the shape of a bottomed circular hole centered on the hinge center axis A. As shown in FIG. The receiving hole portion 52b is opened on the end face of the first cap bearing portion 52 facing one side in the hinge axial direction, and extends from the end face to the other side in the hinge axial direction.

The cap end surface 52 e is an end surface of the first cap bearing portion 52 facing the other side in the hinge axial direction. The end face 52e of the cap has a planar shape extending in a direction perpendicular to the hinge central axis A. As shown in FIG.

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

The groove portion 52c is recessed outward in the hinge radial direction from the inner peripheral surface of the receiving hole portion 52b, and has a groove shape extending in the hinge axial direction. The groove portion 52c is arranged over the entire length of the receiving hole portion 52b in the hinge axial direction. In the present embodiment, the width dimension of the groove portion 52c in the hinge circumferential direction becomes smaller as it goes outward in the hinge radial direction.

The shaft protrusion locking portion 52d is recessed outward in the hinge radial direction from the inner peripheral surface of the shaft hole 52a, and is in the shape of a groove extending in the hinge axial direction. The shaft protrusion locking portion 52d is arranged over the entire length of the shaft hole 52a in the hinge axial direction. An end portion on one side in the hinge axial direction of the shaft protrusion locking portion 52d opens to the bottom surface of the receiving hole portion 52b. The end portion on the other side of the hinge axial direction of the shaft protrusion locking portion 52d is open to the cap end surface 52e. In the present embodiment, the hinge circumferential width dimension of the shaft protrusion locking portion 52 d increases toward the outer side 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. As shown in FIGS. The second cap bearing portion 53 has an inner side surface 53b, an outer sliding contact surface 53c, and a shaft hole 53a.

The inner surface 53b is disposed on the end surface of the second cap bearing portion 53 on the hinge axial side. The inner surface 53b is a planar shape extending in a direction perpendicular to the hinge center axis A. As shown in FIG.

The outer sliding contact surface 53c is disposed on the other end surface of the second cap bearing portion 53 facing the hinge axial direction. The outer sliding contact surface 53c has a planar shape extending in a direction perpendicular to the hinge central axis A. As shown in FIG.

The shaft hole 53a penetrates through the second cap bearing portion 53 in the hinge axial direction. The shaft hole 53a is a circular hole centered on the hinge center axis A. As shown in FIG. An end portion on one side in the hinge axial direction of the shaft hole 53a is opened to the inner surface 53b. The other end portion of the shaft hole 53a in the hinge axial direction opens to the outer sliding contact surface 53c.

The cover bearing portions 54 and 55 protrude toward the rear side from the cover peripheral wall portion 31 a of the cover body 31 . That is, the cover bearing portions 54 and 55 are provided on the cover body 31 . The cover bearing portions 54, 55 and the cover body 31 are integrally formed by a single component. In this embodiment, two cover bearing parts 54 and 55 are provided at intervals from each other in the hinge axial direction.

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

The first cover bearing portion 54 has a substantially cylindrical shape extending in the hinge axial direction. As shown in FIGS. 15 and 18 , the first cover bearing portion 54 has an attachment recessed portion 54b, a rotation contact portion 54c, and a shaft hole 54a.

The attachment recessed portion 54b is recessed or notched from the end face of the first cover bearing portion 54 facing the other side in the hinge axial direction to one side in the hinge axial direction. The bottom surface of the mounting recess 54b faces the other side in the hinge axial direction. The bottom surface of the mounting recess 54b has a planar shape extending in a direction perpendicular to the hinge center axis A. As shown in FIG.

The rotation contact part 54c protrudes to the other side of the hinge axial direction rather than the bottom surface of the attachment recessed part 54b. The rotation contact part 54c is arrange|positioned at the upper side of the attachment recessed part 54b, and is a strip shape extended in the front-back direction. The rotation contact part 54c is arrange|positioned so that it may cover the attachment recessed part 54b from the upper side. The rotation contact portion 54c has 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 axial direction. An end portion of the shaft hole 54 a on one side in the hinge axial direction is opened to an end surface of the first cover bearing portion 54 facing the hinge axial side. The other end portion of the shaft hole 54a in the hinge axial 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 axial direction. As shown in FIGS. 15 to 17 , the second cover bearing portion 55 has an inner surface 55 b and a shaft hole 55 a.

The inner surface 55b is disposed on the end surface of the second cover bearing portion 55 facing the hinge axial direction. The inner surface 55b has a planar shape extending in a direction perpendicular to the hinge center axis A. As shown in FIG. The inner surface 55b is in slidable contact with the outer sliding contact surface 53c of the second cap bearing portion 53 .

The shaft hole 55a has a substantially circular hole shape penetrating through the second cover bearing portion 55 in the hinge axial direction. The end portion on one side in the hinge axial direction of the shaft hole 55a is opened to the inner surface 55b. The end portion of the shaft hole 55 a on the other side in the hinge axial direction is opened to the end surface of the second cover bearing portion 55 facing the other side in the hinge axial direction.

As shown in FIG. 11 , the ring bearing portion 56 protrudes from the rear end portion of the ring member 33 toward the rear side downward. That is, the ring bearing portion 56 is provided on the ring member 33 . The ring bearing portion 56 and the ring member 33 are integrally formed by a single member.

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

The ring bearing portion 56 is disposed adjacent to the cap bearing portions 52 , 53 in the hinge axial direction. Specifically, the ring bearing portion 56 is arranged adjacent to the other side in the hinge axial direction of the first cap bearing portion 52 , and is arranged adjacent to one side of the hinge axial direction of the second cap bearing portion 53 . That is, the ring bearing portion 56 is disposed between the pair of cap bearing portions 52 and 53 in the hinge axial direction.

That is, in this embodiment, the first hinge (hinge) 32 has: cap bearings 52, 53 provided on the cap main body 30; cap bearings 54, 55 provided on the cap body 31; ring bearings 56 provided on the The ring member 33 is configured to align with the cap bearing portions 52, 53 and the cap bearing portions 54, 55 in the hinge axial direction; and the hinge shaft 57 connects the cap bearing portions 52, 53, the cap bearing portions 54, 55, and the ring bearing portion 56 shaft bearings are relatively rotatable around the hinge central axis A.

As shown in FIGS. 15 , 16 and 22 , the ring bearing portion 56 has a housing recess 56 b, a ring end surface 56 c, and a shaft hole 56 a. That is, the first hinge 32 has the accommodation recessed portion 56b.

In this embodiment, the receiving recessed portion 56b is recessed in the ring bearing portion 56 and extends in the axial direction of the hinge. Specifically, the accommodating recess 56b is a bottomed circular hole centered on the hinge central axis A, and is opened on the end face of the ring bearing portion 56 facing the other side of the hinge axial direction. side extension.

The ring end face 56c is an end face of the ring bearing portion 56 on the hinge axial side. The outer peripheral part of the ring end surface 56c is a planar shape extending in a direction perpendicular to the hinge center axis A. As shown in FIG. The cap end surface 52e of the first cap bearing portion (cap bearing portion) 52 on the other side of the hinge axial direction and the ring end surface 56c of the ring bearing portion 56 on one side of the hinge axial direction (outer peripheral portion) are slidable against each other. way of contact.

In addition, the ring end surface 56c has a concave surface 56d disposed on the inner side in the hinge radial direction than the outer peripheral portion of the ring end surface 56c. The concave surface 56d is formed to be recessed on the other side of the hinge axial direction than the outer peripheral portion of the ring end surface 56c.

The shaft hole 56a is in the shape of a circular hole extending in the hinge axial direction. The inner diameter of the shaft hole 56a is smaller than that of the receiving recess 56b. One end portion of the shaft hole 56a in the hinge axial direction opens to the concave surface 56d of the ring end surface 56c. The other end portion of the shaft hole 56 a in the hinge axial direction opens to the bottom surface of the housing recess 56 b.

The biasing portion 60 is elastically deformable. As shown in FIGS. 15 to 18 , the urging portion 60 of the present embodiment is a metal compression coil spring elastically deformable in the hinge axial direction. The urging part 60 is accommodated in the accommodation recessed part 56b. One end portion of the urging portion 60 in the hinge axial direction is in contact with the bottom surface of the housing recess 56 b facing the other side in the hinge axial direction. The end portion on the other hinge axial side of the urging portion 60 is in contact with the end surface (the urging portion abutting surface 61 b described later) facing the hinge axial side of the enclosing portion 61 .

The urging portion 60 urges the ring bearing portion 56 toward one side in the hinge axial direction with respect to the second cap bearing portion (cap bearing portion) 53 via the sealing portion 61 . That is, the urging portion 60 urges the ring member 33 toward one side in the hinge axial direction with respect to the cap main body 30 . In addition, the biasing portion 60 allows the ring member 33 to be displaced to the other side in the hinge axial direction with respect to the cap main body 30 by elastically deforming.

The enclosing portion 61 has a cylindrical shape centered on the hinge center axis A and extends in the hinge axis direction. The enclosing portion 61 is arranged on one side of the second cap bearing portion 53 in the hinge axial direction, and is arranged on the other side of the hinge axial direction of the biasing portion 60 . The enclosing portion 61 is interposed between the second cap bearing portion 53 and the biasing portion 60 in the hinge axial direction. At least a part of the sealing portion 61 is inserted into the housing recess 56b. Thereby, the sealing part 61 seals the urging part 60 in the accommodation recessed part 56b. A portion of the encapsulation portion 61 other than the portion inserted into the housing recess 56 b is exposed to the outside between the second cap bearing portion 53 and the ring bearing portion 56 .

In this embodiment, at least a part of the enclosing portion 61 (the end portion on one side in the hinge axial direction) is inserted into the receiving recess 56b, and the enclosing portion 61 is not completely detached from the receiving recess 56b, thereby being enclosed in the receiving recess 56b. The inner biasing portion 60 is not exposed to the outside. Therefore, the urging part 60 cannot be seen from the external appearance, and can have a favorable appearance.

The enclosing part 61 can suitably use a material different from that of the second cap bearing part 53, such as polyacetal (POM), acrylonitrile-butadiene-styrene (ABS), etc., which are more wear-resistant than the second cap bearing part. 53 materials of excellent texture.

The enclosing portion 61 has an urging portion abutting surface 61b, an outer abutting surface 61c, and a shaft hole 61a. The biasing portion abutting surface 61b is disposed on the end surface of the enclosing portion 61 facing the hinge axial direction. The urging portion abutting surface 61 b abuts on the other end portion of the urging portion 60 in the hinge axial direction.

The outer contact surface 61c is disposed on the other end surface of the enclosing portion 61 facing the hinge axial direction. The outer contact surface 61c is in slidable contact with the inner surface 53b of the second cap bearing portion 53 .

The shaft hole 61a penetrates the sealing part 61 in the hinge axial direction. One end portion of the shaft hole 61 a in the hinge axial direction opens to the urging portion abutting surface 61 b. The other end portion of the shaft hole 61 a in the hinge axial direction is opened to the outer contact surface 61 c. The shaft hole 61a is in the shape of a circular hole extending in the hinge axial direction.

In the cap unit 3B of the present embodiment, the enclosing portion 61 having excellent wear resistance is formed separately from the second cap bearing portion 53 , so that the durability of the first hinge 32 can be improved. In addition, since the enclosing portion 61 is formed separately from the second cap bearing portion 53 , it is possible to improve the formability of the cap main body 30 , to facilitate dimension management, and the like. In addition, as for the second cap bearing portion 53 , the enclosing portion 61 may be configured as a separate body as long as the above-mentioned influence on the formability and size is not taken into consideration. That is, for example, a structure in which the second cap bearing portion 53 and the enclosing portion 61 are integrated may also be used.

As shown in FIGS. 15 , 16 and 19 , the shaft cover 58 has a substantially multi-stage cylindrical shape extending in the hinge axial direction. The shaft cover 58 is inserted into the first cap bearing portion 52 , the ring bearing portion 56 , the biasing portion 60 , the sealing portion 61 , and the second cap bearing portion 53 from one side in the hinge axial direction.

The shaft cover 58 can be suitably made of a material different from that of the cap bearings 52, 53, such as polyacetal (POM), acrylonitrile-butadiene-styrene (ABS), etc., which have a lower wear resistance than the cap bearings 52, 53 materials of excellent texture.

The shaft cover 58 has a small-diameter cylindrical portion 58b, a large-diameter cylindrical portion 58c, a shaft hole 58a, a protrusion 58d, and a shaft protrusion 58e.

The small-diameter cylindrical portion 58b has a cylindrical shape centered on the hinge central axis A, and extends in the hinge axial direction. The small-diameter cylindrical portion 58b is inserted into the shaft hole 52a of the first cap bearing portion 52, the shaft hole 56a of the ring bearing portion 56, the receiving recess 56b, the biasing portion 60, the shaft hole 61a of the sealing portion 61, and the second cap bearing portion 53 Each inside of the shaft hole 53a. In addition, the end surface of the small-diameter cylindrical portion 58 b facing the other side in the hinge axial direction is in slidable contact with the inner surface 55 b of the second cover bearing portion 55 .

The large-diameter cylindrical portion 58c is disposed on one side in the hinge axial direction of the small-diameter cylindrical portion 58b. The large-diameter cylindrical portion 58c has a substantially cylindrical shape having a larger diameter than the small-diameter cylindrical portion 58b, and is connected to one end portion of the small-diameter cylindrical portion 58b in the hinge axial direction. Specifically, the large-diameter cylindrical portion 58c has a substantially bottomed cylindrical shape having an opening on the end surface of the shaft cover 58 facing the hinge axial direction. The large-diameter cylindrical portion 58c is disposed in the housing hole portion 52b of the first cap bearing portion 52 .

The shaft hole 58a penetrates the shaft cover 58 in the hinge axial direction. The shaft hole 58a is a circular hole centered on the hinge center axis A. As shown in FIG. One end portion of the shaft hole 58a in the hinge axial direction opens to the bottom wall portion of the large-diameter cylindrical portion 58c. The other end portion of the shaft hole 58 a in the hinge axial direction is opened to the end surface of the small-diameter cylindrical portion 58 b facing the other side in the hinge axial direction.

The protruding portion 58d protrudes outward in the hinge radial direction from the outer peripheral surface of the large-diameter cylindrical portion 58c, and has a strip shape extending in the hinge axial direction. In this embodiment, the width dimension of the hinge circumferential direction of the protrusion part 58d becomes small as it goes to the outer side of a hinge radial direction. The protruding protrusion 58d is engaged with the groove portion 52c of the first cap bearing portion 52 .

The shaft protrusion 58e protrudes outward in the hinge radial direction from the outer peripheral surface of the small-diameter cylindrical portion 58b, and has a strip shape extending in the hinge axial direction. The shaft protrusion 58e is disposed at one end of the small-diameter cylindrical portion 58b in the hinge axial direction, and is connected to the other end of the protrusion 58d in the hinge axial direction. In the present embodiment, the hinge circumferential width dimension of the shaft protrusion 58e becomes larger as it goes outward in the hinge radial direction. The shaft protrusion 58 e is locked to the shaft protrusion locking portion 52 d of the first cap bearing portion 52 .

The protrusion 58d is locked to the groove 52c, and the shaft protrusion 58e is locked to the shaft protrusion locking portion 52d, so that the shaft cover 58 cannot rotate relative to the first cap bearing portion 52 in the hinge circumferential direction. That is, the shaft cover 58 is attached to the cap main body 30 in a state where rotation in the hinge circumferential direction is restricted.

As shown in FIGS. 15 to 18 , the facing member 59 is a substantially cylindrical member whose center is the hinge central axis A. As shown in FIG. Specifically, the facing member 59 has a substantially bottomed cylindrical shape having an opening at the other end in the hinge axial direction. The facing member 59 is disposed adjacent to one side of the shaft cover 58 in the hinge axial direction. The confronting member 59 is arranged so as to extend over the insides of the housing hole 52 b of the first cap bearing 52 and the mounting recess 54 b of the first cap bearing 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 arranged such that the mutual openings face each other in the hinge axial direction.

The facing member 59 can suitably use a material different from the first cover bearing part 54, for example, use polyacetal (POM), acrylonitrile-butadiene-styrene (ABS) and the like with a wear resistance ratio higher than that of the first cover bearing. Part 54 is made of excellent material.

In the cap unit 3B of the present embodiment, the facing member 59 having excellent wear resistance is formed separately from the first cap bearing portion 54 , thereby improving the durability of the first hinge 32 . In addition, regarding the first cover bearing portion 54, the facing member 59 is not necessarily limited to a separate structure. For example, the facing member 59 may be formed in an integrated structure, and the surface thereof may be provided with wear resistance. The structure of the coating.

The facing member 59 has a flange portion 59b, a cover pressing portion 59c, and a shaft hole 59a. The flange portion 59b is disposed at one end portion of the facing member 59 in the hinge axial direction, and has a flange shape protruding outward in the hinge radial direction from the outer peripheral surface of the facing member 59 . A surface of the flange portion 59b facing one side in the hinge axial direction is in contact with the bottom surface of the attachment recessed portion 54b. The surface of the flange portion 59 b facing the other side in the hinge axial direction is in slidable contact with the end surface of the first cap bearing portion 52 facing the hinge axial side.

The cover pressing portion 59 c is arranged at an end portion facing the hinge axial side of the member 59 . The cover pressing portion 59c is formed in a planar shape so as to notch a part of the flange portion 59b in the hinge circumferential direction. The cover pressing portion 59c is in contact with the rotation contact portion 54c of the first cover bearing portion 54 from the lower side.

The shaft hole 59a penetrates through the bottom wall portion of the facing member 59 in the hinge axial direction. The shaft hole 59a is in the shape of a circular hole centered on the hinge center axis A. As shown in FIG.

The torsion spring 42 is disposed over the large-diameter cylindrical portion 58 c of the shaft cover 58 and the respective interiors of the facing member 59 . The torsion spring 42 is a metal torsion coil spring centered on the hinge center axis A. As shown in FIG. As shown in FIG. 18 , the torsion spring 42 has: a winding portion 42a wound helically; one protruding end 42b extending from one end portion of the winding portion 42a in the hinge axis; and the other protruding The end 42c extends from the other end of the winding portion 42a in the hinge axis direction.

Although not particularly shown, the torsion spring 42 is disposed on the first side in a state where one protruding end 42b 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 cylindrical portion 58c. Inside the hinge 32.

With the above configuration, when the user rotates the lid body 31 from the open position to the side opposite to the opening direction, that is, the closing direction, the rotation contact portion 54c of the first lid bearing portion 54 comes into contact with the lid pressing portion 59c. , so that the facing member 59 also rotates in the closing direction together with the cover body 31 . Thus, the torsion spring 42 is elastically deformed in a direction in which the opening angle between the one protruding end 42b and the other protruding end 42c is narrowed, and can be opened toward the cap main body 30 by its resilience force (restoring deformation force). Direction exerts force on the cover body 31 . In addition, when the lid body 31 is urged in the opening direction, the ring member 33 is also indirectly urged in the opening direction via the lid body 31 .

When the lid body 31 is rotated in the opening direction and the closing direction, the lid body 31 and the facing member 59 are rotated in the hinge circumferential direction, whereas the cap main body 30 and the shaft cover 58 are not rotated in the hinge circumferential direction. Therefore, the first cover bearing part 54 slides with the first cover bearing part 52, the facing member 59 slides with the first cover bearing part 52 and the shaft cover 58, and the second cover bearing part 55 slides with the second cover bearing part 53 and the shaft cover. 58 slides.

As shown in FIGS. 15 and 16 , the hinge shaft 57 has a cylindrical shape centered on the hinge center axis A and extends upward in the hinge axis. The hinge shaft 57 is made of metal. The hinge shaft 57 is arranged to pass through the first cover bearing portion 54, the facing member 59, the torsion spring 42, the first cap bearing portion 52, the shaft cover 58, the ring bearing portion 56, the force applying portion 60, and the sealing portion in the hinge axial direction. 61 . The second cap bearing part 53 and the second cap bearing part 55 . In addition, the hinge shaft 57 pivotally supports the cap bearing portions 52 and 53 and the ring bearing portion 56 via a shaft cover 58 so as to be relatively rotatable around the hinge central axis A. As shown in FIG.

In addition, as shown in FIG. 16, FIG. 21 and FIG. 22, in this embodiment, as the click mechanism of the first hinge 32, one of the end surface 52e of the cap and the end surface 56c of the ring has a stepped portion 63, and the end surface 52e of the cap and the end surface of the ring have a stepped portion 63. The other of 56c has the convex part 62 which can overcome the urging force of the urging part 60, and can go over the step part 63 around the hinge center axis A. As shown in FIG.

Specifically, in the present embodiment, the cap end surface 52e has a protrusion-shaped stepped portion 63 protruding from the cap end surface 52e to the other side in the hinge axial direction. Moreover, the ring end surface 56c has the protrusion-shaped convex part 62 which protrudes to one side of a hinge axial direction from the concave surface 56d.

Furthermore, during the transition of the ring member 33 from the storage state of the ring member 33 to the open state, the convex portion 62 can overcome the urging force of the urging portion 60 and move over the step portion 63 in the hinge circumferential direction. Specifically, in the above-mentioned process, the force for displacing the ring bearing portion 56 (ring member 33 ) toward the other side in the hinge axial direction is generated by bringing the convex portion 62 into contact with the stepped portion 63 , thereby causing the biasing portion 60 to be elastic. out of shape. Elastic deformation of the urging part 60 displaces the ring bearing part 56 to the other side in the hinge axial direction, and the convex part 62 goes over the step part 63 in the hinge circumferential direction.

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 is rotated to the front side, and the convex portion 62 goes over the step portion 63 immediately before entering the stored state, so that the user can Get a click and feel like you're done.

In addition, when the ring member 33 in the accommodated state is rotated rearward (opening direction), operational resistance is generated when the convex portion 62 passes over the step portion 63 to the opposite side in the hinge circumferential direction, thereby preventing unintentional rearward movement. side rotation. In addition, when the user turns the ring member 33 toward the rear side, the user can feel a click feeling due to the overrunning operation resistance, and can feel that the turning operation has started.

In the present embodiment, the convex portion 62 is formed to pass over the stepped portion 63 immediately before the ring member 33 is in the accommodated state. I set the crossing position freely. For example, the convex portion 62 may be configured such that it passes over the step portion 63 immediately before the ring member 33 is opened and rotated to the rear side to the limit.

That is, in this embodiment, the first hinge 32 has a click mechanism including a stepped portion 63 and a convex portion 62, and the click mechanism provides a click feeling when the ring member 33 is rotated in the opening direction or the closing direction around the hinge central axis A.

According to the cap unit 3B and the beverage container 1B of the present embodiment described above, the same effects as those of the above-mentioned embodiment can be obtained.

Specifically, as in the present embodiment, in the structure provided with the lid body 31 for opening and closing the liquid passage port 37 of the port forming member 36 and the lid locking mechanism 43 for fixing the lid body 31 at the closing position, it is also compatible with Similarly to the first embodiment, the screwed state of the cap unit 3B and the container body 2B can be maintained favorably.

Specifically, in the first hinge 32 of this embodiment, the direction in which the ring bearing portion 56 (the ring member 33 ) is urged by the urging portion 60 is one side in the hinge axial direction, that is, the ring member 33 is generally pushed in the circumferential direction. The fastening side T1 exerts force. In addition, by pressing the ring member 33 against the biasing force of the biasing portion 60 , the ring bearing portion 56 slides to the other side in the hinge axial direction. The direction of this slippage is generally the circumferential slack side T2. That is, the rotational force applied to the loose side T2 in the circumferential direction of the ring member 33 can be absorbed by the elastic deformation of the biasing portion 60 , and the rotational force can be prevented from being transmitted to the cap main body 30 .

More specifically, conventionally, for example, when a user carries a beverage container with his or her fingers inserted into a ring member, depending on how the user holds it, there is a case where the cap unit is loosened in the circumferential direction due to the weight of the container body or the like. Spin worries. In addition, similarly, when the beverage container falls in an inverted posture (a posture in which the cap unit is directed downward in the vertical direction), there is a possibility that the cap unit rotates toward the loose side in the circumferential direction due to the manner of collision with the falling surface. concerns. In these cases, if the cap unit is rotated to the loose side in the circumferential direction, the sealing between the protruding portion related to the water-tight seal and the mouth forming member will be released, thereby leaving the beverage (content) contained in the container main body. Leakage to the outside of the container.

On the other hand, in the present embodiment, the rotational force of the ring member 33 to the loose side T2 in the circumferential direction is absorbed by the elastic deformation of the biasing portion 60 so that the cap main body 30 does not rotate. Therefore, the screwing of the cap unit 3B and the container body 2B does not loosen, and the drink contained in the container body 2B does not leak out. In addition, when storing beverages in the container body 2B, or when you want to disassemble the container body 2B and the cap unit 3B for cleaning, etc., grasp the entire cap unit 3B or the peripheral wall portion 30a of the cap body 30, and move the cap unit 3B to the periphery. By rotating toward the loose side T2, the user can detach the cap unit 3B regardless of the urging force of the urging portion 60 . Of course, the cap unit 3B can be rotated to the circumferential fastening side T1 without any problem by grasping the entire cap unit 3B or the peripheral wall portion 30 a of the cap main body 30 in the same manner as above.

In addition, in this embodiment, two cap bearing portions 52 and 53 are provided on the cap main body 30 side, two cap bearing portions 54 and 55 are provided on the cap body 31 side, and one ring bearing is provided on the ring member 33 side. Although the structure of the portion 56 is changed, the same effects can be obtained even if their numbers and arrangements are replaced with each other.

That is, for example, one cap bearing portion may be provided on the cap main body 30 side, and two ring bearing portions may be provided on the ring member 33 side so as to sandwich the one cap bearing portion from both sides in the hinge axial direction.

Alternatively, one cap bearing portion may be provided on the cap main body 30 side, and two cap bearing portions may be provided on the cap body 31 side so as to sandwich the one cap bearing portion from both sides in the hinge axial direction, and the A structure in which two ring bearing portions are provided on the ring member 33 side so as to be sandwiched from both outer sides in the hinge axial direction.

Alternatively, one cover bearing portion may be provided on the cover body 31 side, two ring bearing portions may be provided on the ring member 33 side so as to sandwich the one cover bearing portion from both sides in the hinge axial direction, and the A structure in which two cap bearing portions are provided on the cap main body 30 side so as to be sandwiched from both outer sides in the hinge axial direction.

Alternatively, one ring bearing portion may be provided on the ring member 33 side, two cover bearing portions may be provided on the cover body 31 side so as to sandwich the one ring bearing portion from both sides in the hinge axial direction, and the A structure in which two cap bearing portions are provided on the cap main body 30 side so as to be sandwiched from both outer sides in the hinge axial direction.

That is, it is important that the ring bearing portion is biased toward the fastening side T1 which is one side in the hinge axial direction with respect to the cap bearing portion or the cover bearing portion.

In addition, in this embodiment, the first hinge 32 also has a click mechanism, so when the ring member 33 is in the housed state, when the ring member 33 is rotated in the opening direction, the convex part 62 goes over the step part 63, thereby obtaining a click. It is possible to visually recognize that the turning operation has started. In addition, when the ring member 33 in the stored state is rotated in the opening direction, resistance due to an urging force is generated when the convex portion 62 passes over the step portion 63 , so that unintentional rotation of the ring member 33 in the opening direction can be suppressed.

In addition, in the present embodiment, the lower surface 33a of the ring member 33 is formed in a shape following the shape of the lid top wall portion 31b of the lid body 31 that the lower surface 33a faces. Specifically, in this embodiment, the outer peripheral portion of the lid top wall portion 31b facing the lower surface 33a of the ring member 33 is a tapered surface 31e, and the lower surface 33a of the ring member 33 is an inverted cone following the tapered surface 31e. Faceted.

In this case, it can be arranged so that the lower surface 33 a of the ring member 33 is in close contact with the outer peripheral portion of the lid top wall portion 31 b of the lid body 31 . That is, when the ring member 33 is in the housed state, it is well housed in the lid body 31 . Therefore, it is easy to stabilize the attitude of the ring member 33 in the accommodated state. In addition, since the ring member 33 is brought into close contact with the outer peripheral portion of the cap top wall portion 31b, it is possible to suppress an increase in the dimension in the vertical direction of the cap unit 3B as a whole, and it is easier to achieve downsizing. In addition, in this case, by making the ring member 33 a housed state, the cap unit 3B has an excellent structure in aesthetic appearance.

In addition, this invention is not limited to the said embodiment, For example, as demonstrated below, a structural change etc. are possible in the range which does not deviate from the summary of this invention.

In the above-mentioned first and second embodiments, one side in the axial direction of the hinge corresponds to the fastening side T1 in the circumferential direction, and the other side in the axial direction of the hinge corresponds to the loosening side T2 in the circumferential direction, but the present invention is not limited thereto. One side in the hinge axial direction may correspond to the loose side T2 in the circumferential direction, and the other side in the axial direction of the hinge may correspond to the tightening side T1 in the circumferential direction.

In this case, when a force is applied to the ring members 11, 33 toward the fastening side T1 (the other side in the hinge axial direction) in the circumferential direction where the cap units 3A, 3B are screwed to the container main bodies 2A, 2B, This force is absorbed by the elastic deformation of the parts 19 and 60, and the above-mentioned overtightening of the screwing can be suppressed. Therefore, when the cap units 3A, 3B are subsequently detached from the container main bodies 2A, 2B, it is possible to suppress problems such as that their screwed state is too strong and affects operability (unable to detach).

In addition, the urging portions 19 , 60 may urge the ring members 11 , 33 toward one side in the hinge axial direction and toward the other side in the hinge axial direction with respect to the cap main bodies 9 , 30 .

In addition, the urging parts 19 and 60 should just be elastically deformable members, and elastic members, such as silicon rubber and an elastic body, can also be used, for example.

In the first embodiment, the first ring bearing portion 16 and the enclosing portion 20 may be formed integrally instead of separately, unless the influence of the biasing portion 19 on the appearance is considered. In addition, a wear-resistant coating may be applied to the surface of the first ring bearing portion 16 (at least the end surface facing the other side in the hinge axial direction), so that the first ring bearing portion 16 and the biasing portion 19 are directly in contact with each other. .

In addition, in the first embodiment, one of the cap bearing portion 15 and the first ring bearing portion (ring bearing portion) 16 (the cap bearing portion 15) is provided with the receiving recessed portion 15b, and the other (the first ring bearing portion) is recessed. The ring bearing part 16) is an example in which the bearing sliding surface 16b, the sealing sliding surface 20c of the sealing part 20 and the bearing sliding surface 16b are arranged to slide, but the above-mentioned one and the above-mentioned other may be replaced. That is, the above-mentioned one may be the first ring bearing portion 16 , and the above-mentioned other may be the cap bearing portion 15 .

In addition, in the first embodiment, one of the bearing sliding surface 16b and the enclosed sliding surface 20c (the bearing sliding surface 16b) has the concave step portion 16c, and the other of the bearing sliding surface 16b and the enclosed sliding surface 20c (The sealing sliding surface 20c) has the example which has the convex part 20e, However, It is good also as the structure which replaced the said one and the said other. That is, the above-mentioned one may be the sealing sliding surface 20c, and the above-mentioned other may be the bearing sliding surface 16b.

In addition, in the second embodiment, an example was given in which the lock member 45 of the cover lock mechanism 43 is configured to be rotatable about the second hinge 44, but the present invention is not limited thereto. Although not particularly shown, the locking member may be configured to be slidable in the front-rear direction.

In addition, in the second embodiment, although not particularly shown in the figure, when the cover bearing part and the ring bearing part of the first hinge (hinge) 32 are arranged so as to be adjacent to each other in the hinge axial direction, it is also possible to The first hinge 32 has: a receiving recess, which is recessed in one of the cover bearing part and the ring bearing part and extends in the hinge axial direction, and accommodates the force applying part; and an enclosing part, which seals the force applying part into the receiving recess.

In this case, since the urging portion can be enclosed in the housing recess by the sealing portion, the urging portion can be suppressed from being exposed to the outside, and the appearance design of the cap unit 3B and the beverage container 1B can be improved. In addition, by enclosing the urging part, for example, it is possible to prevent the function of the urging part from being degraded or destabilized due to, for example, adhesion of dirt.

In the above-mentioned first and second embodiments, examples were given in which the present invention is applied to beverage containers 1A, 1B having heat-retaining and cold-retaining functions through container main bodies 2A, 2B having a vacuum heat insulating structure, but the present invention is not limited thereto. here. That is, the present invention can be widely applied to a container with a cap in which a cap unit is detachably attached to the mouth and neck of the container body.

In the present invention, the respective configurations described in the above embodiments and modifications can be combined, and additions, omissions, substitutions, and other changes in configurations can be made without departing from the gist of the invention. In addition, the present invention is not limited by the above-mentioned embodiments, but only by the technical solutions claimed in this application.

Claims (11)

1. A cap unit, which is mounted on the mouth and neck of the container body with the upper opening in a detachable manner by screwing, is characterized in that it has: a cap body to block the upper opening of the container body; an annular ring member disposed on the upper side of the cap main body; and a hinge that connects the ring member to the cap main body so as to be rotatable around the hinge central axis; The hinge has an elastically deformable force applying portion, The urging portion urges the ring member on one side in the hinge axial direction extending toward the hinge central axis with respect to the cap main body. 2. The cap unit according to claim 1, characterized in that, possesses: a mouth forming member having a liquid opening communicated with the inside of the container body and provided on the cap body; The lid body is arranged vertically between the cap main body and the ring member to cover the liquid port, and passes through the hinge while being urged in an opening direction about the hinge central axis. and being connected with the main body of the cap to be freely rotatable; and A cap locking mechanism fixes the cap body in a blocking position relative to the cap body. 3. Cap unit according to claim 1 or 2, characterized in that, One side in the axial direction of the hinge corresponds to a fastening side in the circumferential direction where the cap unit is screwed to the container body, and the other side in the axial direction of the hinge corresponds to a loosening side in the circumferential direction. 4. Cap unit according to claim 1 or 2, characterized in that, The hinge has: The cap bearing part is arranged on the cap main body; a ring bearing portion provided on the ring member and disposed adjacent to the cap bearing portion in the hinge axial direction; and The hinge shaft supports the cap bearing portion and the ring bearing portion so as to be relatively rotatable about the hinge central axis. 5. The cap unit according to claim 2, characterized in that, The hinge has: The cap bearing part is arranged on the cap main body; the cover bearing part is arranged on the cover body; a ring bearing part provided on the ring member and configured to be aligned with the cap bearing part and the cover bearing part in the hinge axial direction; and The hinge shaft supports the cap bearing portion, the cap bearing portion, and the ring bearing portion so as to be relatively rotatable about the hinge central axis. 6. Cap unit according to claim 4, characterized in that, The hinge has: a receiving recess, recessed in one of the cap bearing part and the ring bearing part and extending in the axial direction of the hinge, to accommodate the force applying part; and The enclosing part seals the force applying part into the receiving recess. 7. Cap unit according to claim 5, characterized in that, The hinge has: a receiving recess, recessed in one of the cover bearing part and the ring bearing part and extending in the axial direction of the hinge, to accommodate the force applying part; and The enclosing part seals the force applying part into the receiving recess. 8. Cap unit according to claim 1 or 2, characterized in that, The hinge has a click mechanism that provides a click feeling when the ring member is rotated in an opening direction or a closing direction about a central axis of the hinge. 9. The cap unit of claim 1, wherein: A lower surface of the ring member is formed in a shape following a shape of a top wall portion of the cap main body which the lower surface faces. 10. The cap unit of claim 2, wherein: A lower surface of the ring member is formed in a shape following a shape of a lid top wall portion of the lid facing the lower surface. 11. A beverage container, characterized in that it has: A capping unit according to any one of claims 1 to 10; and The container body is used for the cap unit to be installed.

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