JP2023033226A - Cap unit and beverage container - Google Patents

Abstract

To provide a cap unit which can maintain a good threadedly engaging state between a cap unit and a container body while enabling a ring member to rotate around a hinge to improve convenience and stop the ring member at a given position, and to provide a beverage container.SOLUTION: A cap unit 3A is threadedly engaged with a neck part of a container body, which is open at an upper part, to be detachably attached thereto and includes: a cap body 9 which closes an upper opening of the container body; an annular ring member 11 disposed on the upper side of the cap body 9; and a hinge 12 which connects the ring member 11 with the cap body 9 in a manner that the ring member 11 may rotate around a hinge center axis A. The hinge 12 has a biasing part 19 which may elastically deform. The biasing part 19 biases the ring member 11 toward one side as seen in a hinge axis direction, in which the hinge center axis A extends, relative to the cap body 9.SELECTED DRAWING: Figure 6

Description

The present invention relates to cap units and beverage containers.

Conventionally, there has been known a cap unit as a plug that is detachably attached by screwing to the mouth and neck of a container body having an open top. An annular ring member (handle portion) that can be hung on a hand or the like is rotatably attached to the cap unit via a hinge (see Patent Document 1, for example). Also, a configuration in which the ring member is fixed (integrated) to the lid of the cap unit and erected is also known (see, for example, Non-Patent Document 1).
By providing such a ring member, it is possible to carry the beverage container without gripping the container body by passing a finger through the ring member or by hanging it by hanging it with a carabiner.

Japanese Unexamined Patent Application Publication No. 2020-83331

“[Press Release] Tiger Custom Bottle New Lineup MCZ Type Released on Tuesday, July 6, 2021”, [online], July 6, 2021, Tiger Thermos Co., Ltd., [Searched July 6, 2021 ], Internet <URL: https://www.tiger.jp/news/press_release/pr_210706_01.html>

As in Non-Patent Document 1, in the case of a structure in which the ring member is fixed to the lid and remains standing upward, the vertical dimension is bulky, so it becomes an obstacle when carrying the beverage container in a bag. Cheap. In this respect, if the ring member is rotatable around the hinge as in Patent Document 1, the bulkiness of the vertical dimension can be suppressed when the ring member is in a folded state (stored state), and compactness can be achieved. Easy and convenient.

However, when a finger is passed through the ring member to carry the beverage container, or when the beverage container is dropped, a force may be applied to the ring member in the circumferential direction (unthreading direction). There is a risk that the cap unit will rotate and the screwed state with the container body will become unstable.
In addition, there is a demand to stop (stand still) the rotational position of the ring member around the hinge at an arbitrary position according to the usage of the user.

Advantageous Effects of Invention According to the present invention, the ring member is rotatable around a hinge to improve convenience, maintain a good screwed state between the cap unit and the container body, and furthermore, the ring member can be stopped at an arbitrary position. One object is to provide a unit and a beverage container.

[Aspect 1 of the present invention]
A cap unit detachably attached by screwing to the mouth and neck of a container body having an open top, comprising: a cap body closing the upper opening of the container body; and a ring disposed above the cap body. and a hinge that rotatably connects the ring member to the cap body about the hinge center axis, the hinge having an elastically deformable biasing portion, the biasing The portion biases the ring member with respect to the cap body toward one side in the hinge axis direction in which the hinge central axis extends.

[Aspect 2 of the present invention]
A mouth-forming member provided in the cap body, which has a liquid passage opening communicating with the inside of the container body, and is arranged between the cap body and the ring member in the vertical direction to cover the liquid passage opening. a lid rotatably connected to the cap body via the hinge in a state of being biased in an opening direction around the hinge center axis; A cap unit according to aspect 1, comprising a lid lock mechanism that secures.

[Aspect 3 of the present invention]
The hinge includes a cap bearing portion provided on the cap main body, a ring bearing portion provided on the ring member and arranged adjacent to the cap bearing portion in the hinge axial direction, and the cap bearing portion and the ring. The cap unit according to aspect 1 or 2, further comprising: a hinge shaft that supports the bearing portion so as to be relatively rotatable around the hinge central axis.

[Aspect 4 of the present invention]
The hinge is provided on a cap bearing portion provided on the cap body, a lid bearing portion provided on the lid body, and the ring member, and is aligned with the cap bearing portion and the lid bearing portion in the hinge axis direction. Aspect 2 according to aspect 2, further comprising: a ring bearing portion to be arranged; and a hinge shaft that supports the cap bearing portion, the lid bearing portion, and the ring bearing portion so as to be relatively rotatable around the hinge center axis. cap unit.

[Aspect 5 of the present invention]
The hinge is recessed in one of the cap bearing portion and the ring bearing portion and extends in the hinge axis direction, and includes a housing recess in which the biasing portion is housed, and the biasing portion is enclosed in the housing recess. The cap unit according to aspect 3, comprising an encapsulating portion that:

[Aspect 6 of the present invention]
The hinge is recessed in one of the lid bearing portion and the ring bearing portion and extends in the hinge axis direction, and includes a housing recess in which the biasing portion is housed, and the biasing portion is enclosed in the housing recess. The cap unit according to aspect 4, comprising an encapsulating portion that

[Aspect 7 of the present invention]
7. The cap unit according to any one of aspects 1 to 6, wherein the ring member can be stopped at any open position around the hinge center axis by the biasing by the biasing portion.

[Aspect 8 of the present invention]
From aspect 1, wherein one side in the hinge axis direction corresponds to a tight side in the circumferential direction where the cap unit and the container body are screwed together, and the other side in the hinge axis direction corresponds to the loose side in the circumferential direction. 8. The cap unit according to any one of 7.

[Aspect 9 of the present invention]
A beverage container, comprising: the cap unit according to any one of aspects 1 to 8; and the container body to which the cap unit is attached.

According to the cap unit and the beverage container of one aspect of the present invention, the ring member can be rotated about the hinge to improve convenience, and the screwed state between the cap unit and the container body can be maintained well. The ring member can be stopped at any position.

FIG. 1 is a perspective view showing a beverage container according to a first embodiment of the invention. FIG. 2 is a cross-sectional view showing a beverage container. FIG. 3 is a cross-sectional view showing part of the beverage container, showing a state in which the ring member is housed. FIG. 4 is a cross-sectional view showing part of the beverage container, showing the open state of the ring member. FIG. 5 is a perspective view showing part of the beverage container. FIG. 6 is a partial cross-sectional view showing part of the beverage container. FIG. 7 is an exploded perspective view showing the cap unit. FIG. 8 is an exploded perspective view showing the cap unit. FIG. 9 is a perspective view showing part of the cap body and the cap bearing. FIG. 10 is a perspective view showing a beverage container according to a second embodiment of the invention. FIG. 11 is a cross-sectional view showing part of the beverage container, showing the closed state (closed position) of the lid and the housed state of the ring member. FIG. 12 is a cross-sectional view showing part of the beverage container, showing an open state (open position) of the lid and an open state of the ring member. FIG. 13 is a side view showing part of the beverage container, showing a closed state (closed position) of the lid and an open state of the ring member. FIG. 14 is a perspective view showing part of the beverage container. FIG. 15 is a partial cross-sectional view (longitudinal cross-sectional view) showing part of the beverage container. FIG. 16 is a partial cross-sectional view (horizontal cross-sectional view) showing part of the beverage container. FIG. 17 is an exploded perspective view showing the cap unit. FIG. 18 is an exploded perspective view showing the cap unit. FIG. 19 is a perspective view showing the shaft cover of the first hinge (hinge). FIG. 20 is a perspective view showing part of the cap body and the cap bearing. FIG. 21 is a perspective view showing part of the cap body and the cap bearing. FIG. 22 is a perspective view showing part of the ring member and the ring bearing.

<First embodiment>
A cap unit 3A according to a first embodiment of the present invention and a beverage container 1A having the same will be described with reference to FIGS. 1 to 9. FIG. In the following description, the cap unit 3A may be simply called a cap, and the beverage container 1A may be simply called a container.

As shown in FIGS. 1 and 2, the beverage container 1A of this 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 mouth/neck portion 2c, which is the opening of the container body 2A, by screwing.

The cap unit 3A includes a cylindrical cap body 9 having a top wall (top wall), that is, a capped cylindrical cap body 9, an inner plug portion 10 fixed to the cap body 9, and a space between the container body 2A and the cap body 9. It comprises a waterproof packing 14 for sealing, an annular ring member 11, and a hinge 12 for connecting the ring member 11 to the cap body 9 so as to be rotatable around the hinge center axis A.
The cap unit 3A and the container body 2A are arranged coaxially with each other around the central axis C of the cap unit 3A.

In this embodiment, the direction in which the central axis C extends is called the vertical direction. Among the vertical directions, the direction from the bottom surface portion 2a of the container body 2A to the top wall portion 9b of the cap body 9 is called the upper side, and the direction from the top wall portion 9b to the bottom surface portion 2a is called the lower side.
A direction perpendicular to the central axis C is called a radial direction. Of the radial directions, the direction closer 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 radial outer side or simply the outer side.

Among the radial directions, the direction passing through the hinge 12 and the central axis C is called the front-rear direction. Of the longitudinal directions, the direction from the hinge 12 to the central axis C is called the front side, and the direction from the central axis C to the hinge 12 is called the rear side.
Moreover, the direction perpendicular to the front-back direction is called the left-right direction among the radial directions. As shown in FIG. 2, when the beverage container 1A is in an upright posture in which the top wall portion 9b of the cap body 9 faces upward in the vertical direction, the direction toward the left of the left and right directions is The direction toward the right is called the right side, and the left side is called the left side. The posture in which the top wall portion 9b of the cap body 9 faces downward in the vertical direction is called an inverted posture.

The direction of rotation around the central axis C is called the circumferential direction. The circumferential direction corresponds to the direction (threading direction) in which the cap unit 3A and the container body 2A are screwed together. As shown in FIG. 1, one side T1 in the circumferential direction corresponds to the tight side in the screwing direction, and the other side T2 in the circumferential direction corresponds to the loose side in the screwing direction (unthreading direction). . Therefore, in the present embodiment, the one circumferential side T1 may be called the tight circumferential side T1, and the other circumferential side T2 may be called the loose circumferential side T2. More specifically, in a top view of the beverage container 1A from above, one circumferential side (tightening side) T1 is the clockwise direction around the central axis C, and the other circumferential side (loosening side) T1 is the clockwise direction. side) T2 is the counterclockwise direction about the central axis C;

The central axis C is the central axis of the cap unit 3A and the central axis of the mouth/neck portion 2c of the beverage container 1A. The central axis C may be called a cap central axis C or a container central axis C to distinguish it from the hinge central axis A.

A hinge central axis A of the hinge 12 is arranged on the rear side of the central axis C. As shown in FIG. The central axis C and the hinge central axis A are twisted relative to each other.
The direction in which the hinge center axis A extends is called the hinge axis direction. The hinge axis direction corresponds to the left-right direction. One side of the hinge axial direction corresponds to the right side, and the other side corresponds to the left side. The hinge central axis A extends in a tangential direction of a virtual circle (not shown) centered on the central axis C. As shown in FIG. Therefore, one side in the hinge axial direction corresponds to the tight side T1 in the circumferential direction, and the other side in the hinge axial direction corresponds to the loose side T2 in the circumferential direction (see FIG. 6).

A direction orthogonal to the hinge central axis A is called a hinge radial direction. Of the hinge radial directions, the direction closer to the hinge center axis A is called the inner side in the hinge radial direction, and the direction away from the hinge center axis A is called the outer side in the hinge radial direction.
The direction of rotation around the hinge central axis A is called the hinge circumferential direction.

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

Specifically, the container body 2A has a bottomed cylindrical outer container 4 and an inner container 5 made of, for example, stainless steel. It consists of a double structure container that is joined.

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 plugging a degassing hole provided in the center of the bottom surface of the outer container 4 in a chamber evacuated to a high vacuum.

The container main body 2A includes a substantially disk-shaped bottom surface 2a, a substantially cylindrical body 2b having a bottom end connected to the outer periphery of the bottom surface 2a, and a body 2b disposed above the body 2b. and a mouth and neck portion 2c having a smaller diameter than 2b.

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

The female screw portion 7 is arranged on the inner peripheral portion of the mouth/neck portion 2c.
The protruding portion 8 is arranged on the inner peripheral portion of the mouth/neck portion 2c and positioned below the female screw portion 7 . The protruding portion 8 protrudes radially inward from the inner peripheral surface of the mouth/neck portion 2c and extends over the entire circumference. The protruding portion 8 has an annular shape centered on the central axis C and protrudes most inwardly in the mouth/neck portion 2c.

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

As shown in FIG. 1, the beverage container 1A of the present embodiment has a substantially cylindrical external shape as a whole, but the external shape of the beverage container 1A is not particularly limited. , it is possible to add changes as appropriate according to size, design, etc. Further, each outer surface (surface) of the container body 2A, the cap body 9 and the ring member 11 may be painted, printed, or the like.

As shown in FIGS. 3 and 4, the cap unit 3A is attached to the mouth/neck portion 2c of the container body 2A and constitutes a plug that closes the upper opening 2d of the container body 2A. 3 is a cross-sectional view showing the housing state of the ring member 11 of the cap unit 3A, and FIG. 4 is a cross-sectional view showing the open state of the ring member 11 of the cap unit 3A. 3 and 4 both represent vertical cross-sectional views parallel to the central axis C (including the central axis C).

In the present embodiment, the housed state of the ring member 11 shown in FIG. 3 represents one posture of the ring member 11 in which the lower surface 11a of the ring member 11 and the top wall portion 9b of the cap body 9, which will be described later, face each other. . Further, the open state of the ring member 11 shown in FIG. 4 means that the ring member 11 in the housed state is rotated around the hinge central axis A and opened (released) so that the ring member 11 can be gripped by the user. 2 shows another posture of the ring member 11 (that is, the posture in which the ring member 11 functions as a handle). In the open state of the ring member 11, the lower surface 11a of the ring member 11 and the top wall portion 9b of the cap body 9 do not face each other.

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). The cap body 9 has a peripheral wall portion 9a and a top wall portion 9b.

The peripheral wall portion 9a has a tubular shape extending vertically so as to be continuous with the trunk portion 2b of the container body 2A. Specifically, in this embodiment, the peripheral wall portion 9a has a tapered cylindrical shape whose diameter decreases toward the upper side. The peripheral wall portion 9a surrounds the outer peripheral portion of the mouth/neck portion 2c from the radially outer side to the entire circumferential direction. The lower end of the peripheral wall portion 9a covers the shoulder portion 2e from above.

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 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. A gap is provided in the vertical direction between the top wall portion 9b and the upper opening portion 2d.

The top wall portion 9b has an outer peripheral groove (accommodating concave portion) 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 has an annular shape centered on the central axis C. As shown in FIG. The outer peripheral groove 9c has a substantially polygonal shape when viewed from above, and has a substantially quadrangular shape in the present embodiment. However, not limited to this, although not shown, the outer peripheral groove 9c may have a substantially circular shape when viewed from above. The outer peripheral groove 9c is located at the outer peripheral portion of the upper end of the cap body 9 and opens upward and radially outward.

As shown in FIGS. 3 and 4, in a vertical cross-sectional view parallel to the central axis C, the wall surface (inner wall of the groove) of the outer peripheral groove 9c extends downward as it goes radially outward. Specifically, in this embodiment, the outer peripheral groove 9c has a concave curved shape in this vertical cross-sectional view. That is, the wall surface of the outer peripheral groove 9c is concavely curved. However, although not particularly illustrated, the outer peripheral groove 9c (wall surface thereof) may have a substantially cylindrical side wall facing radially outward and a substantially planar bottom wall facing upward. good.

The inner plug portion 10 is made of heat-resistant resin such as polypropylene (PP). The inner plug portion 10 is integrated with the cap main body 9 to close the upper opening portion 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 9b of the cap body 9 by welding or the like. The inner plug portion 10 is arranged in the mouth/neck portion 2c of the container body 2A. A heat insulating material S is arranged inside the inner plug portion 10 . It is also possible to replace the heat insulating material S with an air layer inside the inner plug portion 10 .

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

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

The water stop packing 14 is attached to the outer periphery of the inner plug portion 10 . The water cutoff packing 14 is a ring-shaped sealing member that seals between the container body 2A and the inner plug portion 10, and is made of, for example, a heat-resistant rubber such as silicone rubber or an elastic member such as an elastomer. An inner peripheral recess 14a that is recessed radially outward is provided on the inner peripheral portion of the waterproof packing 14 over the entire circumference in the circumferential direction. The water stop packing 14 is attached to the inner plug portion 10 by fitting the inner circumferential recess 14a to the flange portion 10a.

An elastic flange portion 14 b is provided on the outer peripheral surface of the waterproof packing 14 so as to protrude radially outward. The elastic flange portion 14b is arranged on the outer peripheral portion of the waterproof packing 14 and extends over the entire circumference in the circumferential direction. Two elastic flange portions 14b are provided side by side in the vertical direction. When the cap unit 3A is attached to the container body 2A, the elastic flange portion 14b is elastically deformed and comes into close contact with the projecting portion 8 of the container body 2A over the entire circumference. As a result, the water stop packing 14 can liquid-tightly seal the space between the projecting portion 8 (container body 2A) and the inner plug portion 10 (cap unit 3A).

The waterproof packing 14 can be elastically deformed by stretching itself and removed from the flange portion 10a. Thereby, the cap unit 3A and the water stop packing 14 can be washed separately, and the space between the water stop packing 14 and the inner plug portion 10 can be kept sanitary.

The water stop packing 14 is not limited to the shape described above. For example, the number of elastic flange portions 14b is not limited to two, and may be one or more than three. is. Moreover, the water stop packing 14 is not limited to the configuration in which the elastic flange portion 14b is provided as described above, and the shape and the like can be appropriately changed.

It can be said that the inner plug portion 10 , the heat insulating material S, and the water stop packing 14 are each one of the constituent elements of the cap main body 9 . In this case, the cap main body 9 further has an inner plug portion 10 , a heat insulating material S, and a waterproof packing 14 .

In the beverage container 1A of the present embodiment, the cap main body is attached to the container main body 2A from the state in which the inner stopper 10 is fitted inside the container main body 2A from the upper opening 2d, as shown in FIGS. By rotating 9 (cap unit 3A) to one side (tightening side) T1 in the circumferential direction, it is possible to attach the cap unit 3A to the container body 2A by screwing the female threaded portion 7 and the male threaded portion 13. be.
Further, from the state where the cap unit 3A is attached to the container body 2A, by rotating the cap body 9 (cap unit 3A) to the other side (loosening side) T2 in the circumferential direction with respect to the container body 2A, the female screw portion is 7 and the male screw portion 13 can be released to remove the cap unit 3A from the container body 2A.

The ring member 11 is made of heat-resistant resin such as polypropylene (PP). The ring member 11 has an annular shape centered on the central axis C. As shown in FIG. The ring member 11 has a substantially polygonal shape, and has a substantially rectangular shape in this embodiment. However, the ring member 11 may have a substantially circular shape, although not particularly illustrated. Also, the ring member 11 may be called a handle or the like.

As shown in FIG. 3, the ring member 11 is arranged above the cap body 9 . Specifically, in the housed state of the ring member 11 shown in FIG. 3, the ring member 11 is arranged on the top wall portion 9b, and more specifically, is arranged on the outer peripheral portion of the top wall portion 9b, that is, on the outer peripheral groove 9c. be done. At least the lower portion of the ring member 11 is accommodated in the outer peripheral groove 9c. That is, when the ring member 11 is stored, at least part of the ring member 11 is stored in the outer peripheral groove (storage recess) 9c.

A lower surface 11a of the ring member 11 has an annular shape centered on the central axis C. As shown in FIG. The lower surface 11a of the ring member 11 has a shape that follows the shape of the top wall portion 9b of the cap body 9 that the lower surface 11a faces. That is, the lower surface 11a of the ring member 11 has a shape that follows the groove shape of the outer peripheral groove 9c that the lower surface 11a faces. Specifically, in the longitudinal cross-sectional view shown in FIG. 3, the lower surface 11a 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 curved shape when viewed in vertical cross section. That is, the lower surface 11a of the ring member 11 is convexly curved. However, although not particularly illustrated, the ring member 11 may have a substantially planar lower surface facing downward and a substantially cylindrical inner peripheral surface facing radially inward.

In this embodiment, the inner peripheral portion of the lower surface 11a of the ring member 11 faces the radially outward-facing wall surface of the outer peripheral groove 9c. The inner peripheral portion of the ring member 11 and the wall surface of the outer peripheral groove 9c are fitted to each other. In this embodiment, since the ring member 11 and the outer peripheral groove 9c are each polygonal, the engagement of these members makes the ring member 11 and the outer peripheral groove 9c nonrotatable in the circumferential direction.

An outer peripheral surface 11b of the ring member 11 extends radially inward toward the upper side. That is, the outer peripheral surface 11b of the ring member 11 has a tapered surface whose diameter decreases toward the upper side. In this embodiment, when the ring member 11 is in the retracted state as shown in FIG. It is arranged substantially flush with the peripheral wall portion 9a so as to form one surface. That is, the outer peripheral surface 11 b of the ring member 11 is arranged so as to be continuous with the peripheral wall portion 9 a of the cap body 9 .

The ring member 11 has a flat portion 11c and a concave portion 11d on its upper surface.
The flat portion 11 c is arranged on the outer peripheral portion of the upper surface of the ring member 11 . The plane portion 11c has an annular shape centering on the central axis C. As shown in FIG. 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 surface portion 11d is arranged in 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 surface portion 11c. The concave portion 11d is recessed below the plane portion 11c. The concave portion 11d has an annular shape centered on the central axis C. As shown in FIG. In the vertical cross-sectional view shown in FIG. 3, the concave portion 11d extends upward as it extends radially outward. Concretely, the concave surface portion 11d has a concave curved shape in this vertical cross-sectional view. That is, the concave portion 11d is concavely curved. The inner peripheral portion of the concave surface portion 11d is formed so as to be smoothly connected to the portion of the top wall portion 9b located inside the outer peripheral groove 9c.

In this embodiment, the lower portion of the ring member 11 is arranged in the outer peripheral groove 9c, the outer peripheral surface 11b is formed so as to be continuous with the peripheral wall portion 9a, and the concave surface portion 11d is continuous with the inner portion of the top wall portion 9b. Since the ring member 11 is provided, the external appearance is improved.
In addition, since the outer surface (surface) of the ring member 11 is provided with unevenness, when the ring member 11 is opened as shown in FIG. and easy to grip.

Although not shown, the top surface of the ring member 11 may be arranged so as to be continuous with the top wall portion 9b of the cap body 9 when the ring member 11 is in the retracted state. That is, the upper surface of the ring member 11 and the upper surface of the top wall portion 9b of the cap body 9 may be arranged substantially flush so as to form one continuous surface.
In this case, the ring member 11 does not protrude from the upper surface or the outer peripheral surface of the cap unit 3A when the ring member 11 is in the retracted state. Therefore, the ring member 11 in the accommodated state can be more integrated with the outer shape of the cap unit 3A. The appearance design of the cap unit 3A becomes better.

Further, in this embodiment, as shown in FIGS. 1, 5, 7, and 8, the ring member 11 has a ring rear end portion 11e connected to the hinge 12, and when the ring member 11 is in the retracted state. and a pair of ring side ends 11g connecting the ring rear end 11e and the ring front end 11f.

At least one or more of the ring rear end portion 11e, the ring front end portion 11f, and the pair of ring side end portions 11g are arranged in the outer peripheral groove (receiving recess) 9c. Specifically, the outer peripheral groove 9c includes a rear end placement portion 9e where the ring rear end portion 11e is arranged, a front end placement portion 9f where the ring front end portion 11f is arranged, and a pair of ring side end portions 11g where the ring side end portions 11g are arranged. and a side end arrangement portion 9g. That is, in the present embodiment, the ring rear end portion 11e, the ring front end portion 11f, and the pair of ring side end portions 11g are all arranged in the outer peripheral groove (accommodating recess) 9c.

The hinge 12 connects the rear portion of the cap 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 has a spring mechanism including a biasing portion 19 and an encapsulating portion 20, which will be described later. The hinge 12 is configured around the hinge central axis A and extends in the hinge axis direction.

As shown in FIGS. 5-9, the hinge 12 has a cap bearing portion 15, ring bearing portions 16 and 17, a biasing portion 19, an enclosing portion 20, and a hinge shaft 18. As shown in FIGS. 6 shows a section (longitudinal section) of the hinge 12 parallel to the central axis C of the cap unit 3A. Also, in the exploded perspective views of the cap unit 3A shown in FIGS. 7 and 8, the arrangement order of the constituent members is partly different from the arrangement relationship of the constituent members after assembly (the assembled state).

One of the cap bearing portion 15 and the ring bearing portions 16, 17 is provided in two with an interval in the hinge axis direction, and the other of the cap bearing portion 15 and the ring bearing portions 16, 17 One is placed in between. In the present embodiment, of the cap bearing portion 15 and the ring bearing portions 16 and 17, two ring bearing portions 16 and 17 are provided with an interval in the hinge axis direction, and the cap bearing portion 15 is divided into two rings. One is arranged between the bearings 16 and 17 .

The cap bearing portion 15 protrudes rearward and upward from the upper end portion of the peripheral wall portion 9a of the cap body 9 . That is, the cap bearing portion 15 is provided on the cap body 9 . The cap bearing portion 15 is integrally formed with the cap main body 9 as a single member. The cap bearing portion 15 has a substantially cylindrical shape extending in the hinge axis direction. The cap bearing portion 15 is positioned at the center of the rear portion of the cap main body 9 in the left-right direction. The cap bearing portion 15 is positioned at the central portion of the hinge 12 in the hinge axial direction.

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 a housing recess 15b.

In this embodiment, the accommodation recess 15b is recessed in the cap bearing portion 15 and extends in the hinge axis direction. More specifically, the housing recess 15b has a multistage circular hole shape centering on the hinge central axis A, and opens at the end face of the cap bearing portion 15 facing one side in the hinge axis direction. extending to the side.

The accommodation 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 opens to the end surface of the cap bearing portion 15 facing one side in the hinge axis direction. The large-diameter hole portion 15f is arranged in a portion on one side of the housing recess portion 15b in the hinge axis direction.

The small-diameter hole portion 15e is arranged in a portion of the housing recess portion 15b on the other side in the hinge axis direction. 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 at the bottom surface of the large-diameter hole portion 15f.

The arm receiving portion 15c is arranged in the housing recess 15b and has a groove shape extending in the hinge axis 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 15d is arranged on the end surface of the cap bearing portion 15 facing the other side in the hinge axis direction. The sliding contact surface 15d has a planar shape extending in a direction perpendicular to the central axis A of the hinge.

The shaft hole 15a is a circular hole extending in the hinge axis direction. The axial hole 15a has an inner diameter smaller than that of the accommodating recess 15b, and more specifically, an inner diameter smaller than that of the small-diameter hole portion 15e. One end of the shaft hole 15a in the hinge axis direction opens to the bottom surface of the small-diameter hole portion 15e. The end of the shaft hole 15a on the other side in the hinge axis 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 axis direction. The ring bearings 16 and 17 are formed integrally with the ring member 11 as a single member. Two ring bearing portions 16 and 17 are provided in this embodiment.

The two ring bearings 16 , 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 two ring bearing portions 16 and 17 in the hinge axis direction. The second ring bearing portion 17 is arranged on the other side of the two ring bearing portions 16 and 17 in the hinge axis direction.

The first ring bearing portion 16 protrudes rearward 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 arranged adjacent to one side of the cap bearing portion 15 in the hinge axis direction. The first ring bearing portion 16 has a substantially cylindrical shape extending in the hinge axis direction.

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

The bearing sliding surface 16b is arranged on the end surface of the first ring bearing portion 16 facing the other side in the hinge axis direction. The bearing sliding surface 16b has a planar shape extending in a direction perpendicular to the central axis A of the hinge.
In this embodiment, the bearing sliding surface 16b has a step portion 16c. The stepped portion 16c is recessed from the bearing sliding surface 16b toward one side in the hinge axis direction. The stepped portion 16c is arranged on a portion of the bearing sliding surface 16b in the hinge circumferential direction. Specifically, in this embodiment, when the ring member 11 is in the retracted state, the stepped portion 16c is arranged at the lower end portion of the bearing sliding surface 16b.

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

The second ring bearing portion 17 protrudes rearward 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 arranged adjacent to the other side of the cap bearing portion 15 in the hinge axis direction. The second ring bearing portion 17 has a substantially cylindrical shape extending in the hinge axis direction.

The second ring bearing portion 17 has a sliding convex portion 17b, a contact surface 17c, and a shaft hole 17a.
The sliding contact convex portion 17b is located at one end of the second ring bearing portion 17 in the hinge axis direction. The sliding contact convex portion 17b projects toward one side in the hinge axial direction from a portion of the second ring bearing portion 17 other than the end portion on one side in the hinge axial direction, that is, from a portion other than the sliding contact convex portion 17b. . The sliding contact convex portion 17b has a cylindrical shape extending in the hinge axis direction. The sliding convex portion 17b has a smaller outer diameter than the portion of the second ring bearing portion 17 other than the sliding convex portion 17b.

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

The shaft hole 17a passes through the second ring bearing portion 17 in the hinge axis direction. One end of the shaft hole 17a in the hinge axis direction opens to the contact surface 17c. The shaft hole 17a is a multistage circular hole extending in the hinge axis direction. A portion of the shaft hole 17a other than the end on the other side in the hinge axis direction has a smaller inner diameter than the end on the other side in the hinge axis direction.

The biasing portion 19 is elastically deformable. Specifically, in the present embodiment, the biasing portion 19 is a metal compression coil spring that has a helical shape around the hinge central axis A and is elastically deformable in the hinge axis direction. The biasing portion 19 is housed in the housing recess 15b. The biasing portion 19 is arranged over the small diameter hole portion 15e and the large diameter hole portion 15f of the accommodation recess 15b. The other end of the biasing portion 19 in the hinge axis direction contacts the bottom surface of the small-diameter hole portion 15e. One end of the urging portion 19 in the hinge axis direction contacts an end surface (an urging portion contact surface 20d described later) of the enclosure portion 20 facing the other side in the hinge axis direction.

The biasing portion 19 biases the first ring bearing portion 16 toward one side in the hinge axis direction via the enclosing portion 20 with respect to the cap bearing portion 15 . That is, the biasing portion 19 biases the ring member 11 toward one side in the hinge axis direction with respect to the cap body 9 . Further, the biasing portion 19 allows the ring member 11 to be displaced to the other side in the hinge axis direction with respect to the cap body 9 by elastically deforming.

The enclosing part 20 has a substantially cylindrical shape extending in the hinge axis direction. The enclosing portion 20 is arranged on the other side of the first ring bearing portion 16 in the hinge axis direction, and is arranged on one side of the biasing portion 19 in the hinge axis direction. The enclosing portion 20 is interposed between the first ring bearing portion 16 and the biasing portion 19 in the hinge axis direction. At least a portion of the enclosure portion 20 is inserted into the large-diameter hole portion 15f of the accommodation recess portion 15b. As a result, the enclosing part 20 encloses the urging part 19 in the accommodation recess 15b. A portion of the enclosure portion 20 other than the portion inserted into the accommodation recess 15 b is exposed to the outside between the first ring bearing portion 16 and the cap bearing portion 15 .

In the present embodiment, at least part of the enclosing part 20 (the end on the other side in the hinge axis direction) is inserted into the housing recess 15b, so that the enclosing part 20 is not completely separated from the housing recess 15b. , the biasing portion 19 sealed inside the housing recess 15b is not exposed to the outside. Therefore, the urging portion 19 is not visible from the outside, and a good appearance can be obtained.

The enclosing portion 20 is made of a material different from that of the first ring bearing portion 16, such as polyacetal (POM) or acrylonitrile-butadiene-styrene (ABS). Materials can be preferably used.
In the cap unit 3A of the present embodiment, the durability of the hinge 12 can be improved by constructing the enclosing portion 20 having excellent wear resistance separately from the first ring bearing portion 16 .

The enclosure portion 20 has an arm portion 20b, an enclosure slide surface 20c, an urging portion contact surface 20d, and a shaft hole 20a.
As shown in FIG. 8, the arm portion 20b has a rib shape that protrudes outward in the hinge radial direction from the outer peripheral surface of the enclosure portion 20 and extends 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. The arm portion 20b is fitted to the arm receiving portion 15c so as to be slidable in the hinge axis direction. By inserting the arm portion 20b into the arm receiving portion 15c, the enclosure 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. be.

As shown in FIGS. 6 and 7, the enclosing sliding surface 20c is arranged on the end surface of the enclosing part 20 facing one side in the hinge axis direction. The enclosed sliding surface 20c has a planar shape extending in a direction perpendicular to the central axis A of the hinge. The enclosing sliding surface 20c slidably contacts the bearing sliding surface 16b of the first ring bearing portion 16. As shown in FIG.

In this embodiment, the enclosing sliding surface 20c has a convex portion 20e. The convex portion 20e has a convex shape that protrudes from the enclosing sliding surface 20c to one side in the hinge axis direction. The convex portion 20e is arranged on a portion of the enclosing sliding surface 20c in the hinge circumferential direction. In this embodiment, the convex portion 20e is arranged at the lower end portion of the encapsulation sliding surface 20c. When the ring member 11 is in the retracted state, the projection 20e faces the stepped portion 16c in the hinge axis direction and is detachably locked in the stepped portion 16c.

The cap unit 3A of the present embodiment includes a storage state holding mechanism 21 that holds the posture of the ring member 11 when the ring member 11 is in the storage state. The stored state holding mechanism 21 includes a stepped portion (locked portion) 16c provided on the ring member 11 and a convex portion (locking portion) locked to the stepped portion 16c of the ring member 11 in the housed state. 20e and . In this embodiment, the storage state holding mechanism 21 is arranged on the hinge 12 side (that is, on the rear side) of the cap central axis C in the front-rear direction.
When the ring member 11 is rotated toward the opening direction about the hinge central axis A by a user's operation or the like, the stepped portion 16c rides on the convex portion 20e in the hinge circumferential direction.

More specifically, in the process of shifting the ring member 11 from the housed state to the open state, the stepped portion 16c rotates about the hinge center axis A together with the ring member 11, and the ring member 11 moves to the predetermined position. By rotating with the above torque, it is possible to push the encapsulating portion 20 toward the other side in the hinge axis direction against the biasing force of the biasing portion 19, and to ride the convex portion 20e around the hinge center axis A. is.

In other words, in the process of shifting the ring member 11 from the housed state to the open state, the convex portion 20e moves the stepped portion 16c around the hinge center axis A against the biasing force of the biasing portion 19. It is possible to climb on. Specifically, in the above process, the convex portion 20e is brought into contact with the wall portion of the stepped portion 16c located at the end portion in the hinge circumferential direction, so that the enclosure portion 20 is directed toward the other side in the hinge axis direction. A displacing force is generated, and the biasing portion 19 is elastically deformed. The elastic deformation of the urging portion 19 displaces the encapsulating portion 20 to the other side in the hinge axial direction, and the convex portion 20e rides on the wall portion of the stepped portion 16c in the hinge circumferential direction and is separated from the stepped portion 16c. . At this time, the convex portion 20e slidably contacts a portion of the bearing sliding surface 16b other than the stepped portion 16c.

Contrary to the above, in the process of returning the ring member 11 from the open state to the retracted state, the stepped portion 16c moves (rotates) in the hinge circumferential direction with respect to the convex portion 20e, and these move in the hinge axial direction. At the opposite position, the urging portion 19 is restored and deformed, the enclosing portion 20 is displaced toward one side in the hinge axis direction, and the convex portion 20e is reinserted (locked) into the stepped portion 16c. be done. As a result, the stored state holding mechanism 21 again holds the ring member 11 in the stored state.

That is, in this embodiment, the hinge 12 has a click mechanism (stored state holding mechanism 21) including the stepped portion 16c and the convex portion 20e. Gives a sudden resistance when turning in the direction of closing. It should be noted that in the present embodiment and the subsequent embodiments described later, the "sudden sense of resistance" may be replaced with the "click feeling".

As shown in FIGS. 6 and 8, the biasing portion contact surface 20d is arranged on the end surface of the enclosure portion 20 facing the other side in the hinge axis direction. The biasing portion contact surface 20d has a planar shape extending in a direction perpendicular to the central axis A of the hinge. The biasing portion contact surface 20d contacts the end portion of the biasing portion 19 on one side in the hinge axis direction.

The shaft hole 20a penetrates the enclosure 20 in the hinge axis direction. One end of the shaft hole 20a in the hinge axis direction opens to the enclosing sliding surface 20c. The other end of the shaft hole 20a in the hinge axis direction opens to the biasing portion contact surface 20d. The shaft hole 20a is a circular hole extending in the hinge axis direction.

The hinge shaft 18 has a cylindrical shape centered on the hinge central axis A and extends in the hinge axis direction. The hinge shaft 18 is made of metal and is inserted into the cap bearing portion 15 , the pair of ring bearing portions 16 and 17 , the biasing portion 19 and the enclosure portion 20 . The hinge shaft 18 supports the cap bearing portion 15 and the ring bearing portions 16 and 17 so as to be relatively rotatable about the central axis A of the hinge.

According to the cap unit 3A and the beverage container 1A of this embodiment described above, the ring member 11 is connected to the cap body 9 via the hinge 12, that is, the ring member 11 rotates around the hinge central axis A. It is mobile. Therefore, the ring member 11 can be placed in an open state or a retracted state according to usage conditions, etc., and the posture of the ring member 11 can be suitably selected, which is highly convenient. In particular, when the ring member 11 is open, the user can pass the finger through the ring member 11 and easily carry it.

In this embodiment, a stored state holding mechanism 21 is provided to hold the ring member 11 in the stored state. Therefore, for example, when the beverage container 1A is in an inverted position or centrifugal force acts on the beverage container 1A, it is possible to prevent the ring member 11 in the housed state from being unintentionally opened. Therefore, the bulkiness of the ring member 11 is suppressed more stably, and the ring member 11 is less likely to get in the way when the beverage container 1A is stored in a bag or the like, or when the cap is opened and closed, which is convenient.

Further, in the present embodiment, the stored state holding mechanism 21 includes a stepped portion (locked portion) 16c provided on the ring member 11 and a convex portion locked to the stepped portion 16c of the ring member 11 in the housed state ( The stepped portion 16c rides on the convex portion 20e when the ring member 11 is rotated toward the opening direction about the hinge center axis A with a torque equal to or higher than a predetermined torque. .
In this case, by locking the stepped portion (locked portion) 16c and the convex portion (locking portion) 20e, the ring member 11 in the housed state is stably prevented from being unintentionally opened. be able to. Further, when the ring member 11 is used, the user rotates the ring member 11 in the opening direction with a torque greater than or equal to a certain level. can be left open. Therefore, the operability is good.

Further, when the user rotates the ring member 11 in the housed state in the opening direction around the hinge center axis A, the stepped portion (locked portion) 16c rides on the convex portion (locking portion) 20e. , the user can get a sudden sense of resistance. By obtaining this sudden resistance, the user can intuitively recognize that the ring member 11 has been released from the retracted state.

When returning the ring member 11 from the open state to the retracted state, the stepped portion (locked portion) 16c engages the convex portion (locking portion) 20e in a direction opposite to the above. As a result, the user can still get a sudden sense of resistance. By obtaining this sudden resistance, the user can intuitively recognize that the ring member 11 has been put into the stored state again.

Further, in the present embodiment, the storage state holding mechanism 21 is arranged closer to the hinge 12 than the central axis C of the cap in the front-rear direction.
In this case, the distance between the housed state holding mechanism 21 and the hinge central axis A is kept small, and the turning radius of the housed state holding mechanism 21 is kept small. As a result, the stored state holding mechanism 21 is less likely to be affected by molding errors, component deformation, and the like during manufacturing, so that the function of the stored state holding mechanism 21 is maintained satisfactorily. In addition, since the storage state holding mechanism 21 is arranged at a position that is difficult to see from the front side, the exterior design is good.

Further, in the cap unit 3A and the beverage container 1A of the present embodiment, an outer peripheral groove (storage recess) 9c is provided to accommodate at least part of the ring member 11 in the stored state. For this reason, when the ring member 11 is in the housed state, the dimension of the ring member 11 protruding above the cap unit 3A is kept small, and the bulkiness due to the provision of the ring member 11 is suppressed. Accordingly, it is possible to prevent the ring member 11 from influencing the external design of the cap unit 3A. As in this embodiment, it is also possible to substantially integrate the ring member 11 in the accommodated state with the outer shape of the cap unit 3A.

Specifically, at least one of a ring rear end portion 11e, a ring front end portion 11f, and a pair of ring side end portions 11g, which are components of the ring member 11, is arranged in the outer peripheral groove (accommodating recess) 9c, In this embodiment, all these components are arranged in the outer peripheral groove 9c. It is possible to more stably suppress the ring member 11 from projecting from the cap unit 3A.

Further, in this embodiment, the biasing portion 19 of the hinge 12 biases the ring member 11 toward one side in the hinge axial direction. Therefore, for example, when a user puts his or her finger through the ring member 11 and carries the beverage container 1A, even if a force directed toward the other side of the hinge axis direction is applied to the ring member 11, This force can be absorbed by the elastic deformation of the urging portion 19 to make it difficult to transmit it to the cap body 9 . As a result, it is possible to prevent the cap unit 3A from rotating in the circumferential direction (unscrew direction) due to the above force, and to maintain the screwed state of the cap unit 3A and the container body 2A in good condition.

Specifically, in this embodiment, one side in the hinge axis direction corresponds to the tight side T1 in the circumferential direction where the cap unit 3A and the container body 2A are screwed together, and the other side in the hinge axis direction corresponds to the loose side in the circumferential direction. It corresponds to side T2.
In this case, when a force (rotational force) directed toward the loosened side T2 (the other side in the hinge axis direction) in the circumferential direction in which the cap unit 3A and the container body 2A are screwed together acts on the ring member 11. This force can be absorbed by the biasing portion 19 to suppress loosening of the threaded engagement. Therefore, the beverage in the container body 2A is prevented from leaking out of the container due to loosening of the screwing.

Further, in the present embodiment, of the cap bearing portion 15 and ring bearing portions 16 and 17, two ring bearing portions 16 and 17 are provided with an interval in the hinge axis direction, and the cap bearing portion 15 is divided into two One is arranged between the ring bearing portions 16 and 17 . That is, one of the cap bearing portion 15 and the ring bearing portions 16 and 17 is provided in two with an interval in the hinge axis direction, and the other of the cap bearing portion 15 and the ring bearing portions 16 and 17 is provided in two. One is arranged between said one.
In this case, the strength of the hinge 12 can be stably increased while the above-described effects are achieved by the biasing portion 19 of the hinge 12 .

Further, in this embodiment, the hinge 12 has the accommodating recess 15b and the enclosing portion 20 that encloses the biasing portion 19 in the accommodating recess 15b.
In this case, since the urging portion 19 can be enclosed in the housing recess 15b by the enclosing portion 20, the urging portion 19 is prevented from being exposed to the outside. can be In addition, by enclosing the biasing portion 19, it is possible to prevent the function of the biasing portion 19 from deteriorating or becoming unstable due to adhesion of dirt, for example.

Further, in the present embodiment, the stored state holding mechanism 21 is provided as a click mechanism for the hinge 12. Specifically, the bearing sliding surface 16b has a stepped portion 16c, and the enclosed sliding surface 20c is biased. It has a convex portion 20e that can ride on the stepped portion 16c around the hinge central axis A against the biasing force of the portion 19. As shown in FIG.
In this case, when the user rotates the ring member 11 around the hinge center axis A, the convex portion 20e rides on the stepped portion 16c against the biasing force of the biasing portion 19, so that the user can suddenly resistance can be obtained. By obtaining a sudden sense of resistance, the user can sensuously recognize in which state the ring member 11 is rotated.

Specifically, in this embodiment, when the ring member 11 is rotated in the opening direction when the ring member 11 is in the retracted state, the projection 20e relatively rides on the stepped portion 16c in the hinge circumferential direction. A sudden sense of resistance can be obtained, and the start of the rotating operation can be intuitively recognized. When the ring member 11 in the housed state rotates in the opening direction, resistance due to the biasing force is generated when the projection 20e rides on the stepped portion 16c. Suppressed.

In the present embodiment, just before the ring member 11 is put into the retracted state, the convex portion 20e is inserted again into the stepped portion 16c (that is, the stepped portion 16c and the convex portion 20e are locked). By adjusting the positions of the stepped portion 16c and the convex portion 20e, the riding position (locking position) can be freely set. For example, in the reference example of the present embodiment, the convex portion 20e may be inserted again into the stepped portion 16c immediately before the ring member 11 is in the open state and is rotated rearward to the limit. In this case, the ring member 11 is held in the open state by locking the stepped portion 16c and the convex portion 20e. Therefore, the stepped portion 16c and the convex portion 20e function as an open state holding mechanism that holds the posture of the ring member 11 when the ring member 11 is in the open state. When the convex portion 20e is reinserted into the stepped portion 16c immediately before the ring member 11 enters the retracted state, the user can feel a sudden resistance, and the rotation operation of the ring member 11 is completed. You can perceive what you have done.

As another example, the convex portion 20e may be reinserted into the stepped portion 16c at a position where the ring member 11 stands up in the open state. In this case, the stepped portion 16c and the convex portion 20e are engaged with each other, so that the ring member 11 is held in an upright state. Therefore, by placing the beverage container 1A in a state in which the ring member 11 stands upright, the user can immediately hook the ring member 11 and carry it. Further, when the convex portion 20e is reinserted into the stepped portion 16c, the user can feel a sudden resistance, and can sensuously recognize in which state the ring member 11 is rotated. can be done.

In this embodiment, the biasing portion 19 of the hinge 12 biases the ring member 11 toward the hinge axis direction. Therefore, the ring member 11 is slidably resisted when it rotates. For example, the elastic force of the urging portion 19 can be used to adjust the sliding resistance. As a result, the ring member 11 is stopped at an arbitrary position while it is being rotated about the hinge central axis A by the sliding resistance due to the above-described biasing, without the need for locking between the stepped portion 16c and the convex portion 20e. (Stand still). In this case, the user can stop smoothly without experiencing sudden resistance.

Further, in this embodiment, the lower surface 11a of the ring member 11 has a shape following the shape of the top wall portion 9b of the cap main body 9 facing the lower surface 11a.
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 surface shape, and the lower surface 11a of the ring member 11 has a convex shape following the concave surface of the outer peripheral groove 9c. It is curved.
In this case, the lower surface 11a of the ring member 11 can be placed in close contact with the outer peripheral groove 9c of the top wall portion 9b of the cap body 9. As shown in FIG. That is, when the ring member 11 is in the housed state, it fits well within the outer peripheral groove 9c. Therefore, it is easy to stabilize the attitude of the ring member 11 in the stored state. Further, by bringing the ring member 11 into close contact with the outer peripheral groove 9c of the top wall portion 9b, the bulkiness of the vertical dimension of the cap unit 3A as a whole can be suppressed, and the size can be easily reduced.

Further, in this embodiment, the outer peripheral groove 9c of the cap body 9 is polygonal, the ring member 11 is polygonal, and the inner peripheral portion of the ring member 11 fits into the inner peripheral portion of the outer peripheral groove 9c.
In this case, when the ring member 11 is in the stored state, the ring member 11 is restricted from rotating in the circumferential direction with respect to the cap body 9 . Therefore, when the ring member 11 is stored, for example, when the user rotates the cap unit 3A to the loose side T2 in the circumferential direction and removes it from the container body 2A, the user holds the ring member 11 together with the palm and rotates it. Also, application of an excessive load to the urging portion 19 of the hinge 12 or the like is suppressed. Therefore, the function of the hinge 12 described above is maintained satisfactorily 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 having the same will be described with reference to FIGS. 10 to 22. FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be 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 by screwing to the mouth/neck portion 2c of the container body 2B having an open top. The cap unit 3B constitutes a plug that closes the upper opening 2d of the container body 2B.

The container main body 2B of this embodiment has a male screw portion 35 at the mouth/neck portion 2c. The male screw portion 35 is arranged on the outer peripheral portion of the mouth/neck portion 2c.

The cap unit 3B has a cap body 30 having a capped cylindrical shape that closes the upper opening 2d of the container body 2B, and a liquid passage port 37 that communicates with the inside of the container body 2B. A member 36, a mouth attachment/detachment mechanism 38 for detachably attaching the mouth forming member 36 to the cap body 30, a waterproof packing 39 for sealing between the container body 2B and the mouth forming member 36, the cap body 30 and the mouth. A topped cylindrical lid 31 arranged above the forming member 36 and covering the liquid passage port 37 , an annular ring member 33 arranged above the lid 31 , and the lid 31 with respect to the cap main body 30 . and a first hinge (hinge) 32 that connects the ring member 33 so as to be rotatable around the hinge center axis A;

In addition, it can be said that the mouth forming member 36 , the mouth detachable mechanism 38 and the waterproof packing 39 are each one of the constituent elements of the cap main body 30 . Therefore, the cap main body 30 has a port forming member 36 in which the liquid passage port 37 is arranged, a port attaching/detaching mechanism 38 and a waterproof packing 39 . That is, the cap body 30 has a liquid passage port 37 . Alternatively, the mouth forming member 36 may be formed integrally with the cap main body 30 in a non-detachable state without having the mouth detaching mechanism 38 .

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 housed state of the ring member 33, and the longitudinal sectional view of the cap unit 3B shown in FIG. The drawing shows the open state (open position) of the lid 31 and the open state of the ring member 33, and the side view of the cap unit 3B shown in FIG. 33 open state.

In the present embodiment, the closed state (closed position) of the lid body 31 shown in FIG. 11 represents one posture of the lid body 31 in which the lower end opening of the lid body 31 and the upper end outer periphery of the cap body 30 face each other. ing. The open state (open position) of the lid body 31 shown in FIG. 12 means that the lid body 31 in the closed position is rotated around the hinge central axis A and opened (opened) so that the user can open the liquid inlet. Another posture of the lid body 31 is shown in which it is possible to drink or pour out the beverage in the container body 2B through 37. FIG. In the open position of the lid 31, the lower end opening of the lid 31 and the upper outer peripheral portion of the cap body 30 do not face each other.

In the present embodiment, the housed state of the ring member 33 shown in FIG. 11 represents one posture of the ring member 33 in which the lower surface 33a of the ring member 33 and the lid top wall portion 31b of the lid body 31, which will be described later, face each other. ing. The open state of the ring member 33 shown in FIG. 13 means that the ring member 33 in the housed state is rotated around the hinge center axis A and opened (opened) so that the ring member 33 can be gripped by the user. 2 shows another posture of the ring member 33 (that is, the posture in which the ring member 33 functions as a handle). In the open state of the ring member 33, the lower surface 33a of the ring member 33 and the lid top wall portion 31b of the lid body 31 do not face each other.

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

The cap body 30 is made of heat-resistant resin such as polypropylene (PP). As shown in FIG. 11, the cap main body 30 includes a peripheral wall portion 30a formed in a substantially cylindrical shape so as to be continuous with the body portion 2b of the container main body 2B, and a top wall portion 30c connected to the upper end portion of the peripheral wall portion 30a. and have Further, the top wall portion 30c has an opening portion 30b that vertically penetrates the top wall portion 30c.

A female screw portion 34 is provided on the inner peripheral surface of the peripheral wall portion 30a. The female threaded portion 34 is screwed with the male threaded portion 35 of the mouth/neck portion 2c. Thus, the cap body 30 is detachably attached to the mouth/neck portion 2c of the container body 2B by screwing.

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

The port forming member 36 includes a bottom wall portion 36a in which a liquid passage port 37 is formed, a cylindrical peripheral wall portion 36b that rises upward from the periphery of the bottom wall portion 36a, and radially extending from the lower end portion of the bottom wall portion 36a. A lower flange portion 36c extending outward, a pair of upper flange portions (not shown) projecting leftward and rightward from the outer peripheral surface of the peripheral wall portion 36b and extending in the front-rear direction, and provided at the upper end opening edge of the peripheral wall portion 36b. , and an obliquely cut drinking mouth portion 36e extending downward toward the rear side from the front end portion of the upper end opening edge. By providing such a mouth portion 36e, the front end portion of the peripheral wall portion 36b protrudes higher than the other portions.

Between the cap body 30 and the mouth forming member 36, a mouth attaching/detaching mechanism 38 for detachably attaching the mouth forming member 36 to the opening 30b of the cap body 30 is provided. For example, the configuration described in Japanese Patent No. 5312542 can be used as the mouth attachment/detachment mechanism 38, and detailed description thereof will be omitted in this embodiment. The mouth forming member 36 may be detachable from the cap body 30 or may be integrated with the cap body 30 .

The waterproof packing 39 is detachably attached to the lower flange portion 36 c of the mouth forming member 36 . The water stop packing 39 is a ring-shaped sealing member for sealing between the projecting portion 8 (container body 2B) and the mouth forming member 36 . The waterproof packing 39 is made of an elastic member such as heat-resistant rubber such as silicone rubber or elastomer. The water stop packing 39 is fitted to the outer peripheral portion of the lower flange portion 36c.

When the waterproof packing 39 is fitted inside the upper opening 2d of the container body 2B, it is elastically deformed and tightly adheres to the overhanging portion 8 of the container body 2B along the entire circumference. Thereby, it is possible to seal the space between the projecting portion 8 and the mouth forming member 36 .

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

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

The lid body 31 includes a lid peripheral wall portion 31a formed in a substantially cylindrical shape so as to be 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 lid top wall portion 31b. and a cylindrical inner wall portion 31c projecting downward from the wall portion 31b.

A lid packing 40 is provided inside the lid 31 to close the liquid passage port 37 of the port forming member 36 . That is, the lid body 31 has a lid packing 40 . The lid packing 40 is a plug-like sealing member for sealing the liquid passage port 37 . The lid packing 40 is made of an elastic member, and can be made of the same material as the waterproof packing 39 .

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

In the cap unit 3B, when the lid body 31 closes the upper portion of the cap main body 30, the lid packing 40 is elastically deformed and comes into close contact with the periphery of the liquid passage port 37. As shown in FIG. Thereby, the liquid passage port 37 of the port forming member 36 can be closed.

When the lid packing 40 is attached to the inner wall portion 31c, the lid packing 40 is elastically deformed so as to expand in diameter, and the inner wall portion 31c is tightly fitted into the inner wall portion 31c, so that the lid packing 40 is tightly fixed to the inner wall portion 31c. Therefore, even if the inside of the container main body 2B becomes a negative pressure at the closed position of the lid 31 and a tensile force directed toward the inside of the container main body 2B acts on the lid packing 40, the lid packing will not be closed when the lid 31 is opened. 40 is prevented from coming off the inner wall portion 31c. Therefore, when the lid 31 is opened, the liquid passage port 37 can be stably opened.

The lid top wall portion 31b has a concave portion 31d recessed downward from the upper surface of the lid top wall portion 31b. A cover member 41 is attached to the concave portion 31d to cover the inner wall portion 31c from above. That is, the lid body 31 has a cover member 41 . The cover member 41 is made of the same material as the lid body 31 and is formed in a substantially disc shape.

The cover member 41 is not limited to being made of the same material as the lid body 31, but may be made of a different material or color, or may be made of a transparent material. Also, a three-dimensional structure may be arranged on the upper portion of the cover member 41, or a stamp may be applied to the upper surface. Thereby, it is possible to make the cap unit 3B excellent in design.

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 that slopes 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 rearward when viewed from above.

As shown in FIG. 11 , the lid lock mechanism 43 applies the biasing force of a torsion spring 42 (to be described later) to the lid 31 at the position where the lid 31 closes the liquid passage port 37 , that is, the closed position of the lid 31 . It resists and it fixes with respect to the cap main body 30. As shown in FIG.

Specifically, the lid lock mechanism 43 includes a lock member 45 rotatably attached to the cap body 30 via the second hinge 44 and a lock member 45 rotatably attached to the cap body 30 via the second hinge 44 . and a ring stopper 46 . A hinge center axis (not shown) of the second hinge 44 extends in the left-right direction.

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

A hook portion 47 is provided at the tip portion of the first extension portion 45a (upper end portion of the lock member 45) so as to protrude rearward. Between the second extension portion 45b and the peripheral wall portion 30a, an elastic member (rubber member or spring member) 48 is arranged in a state of being compressed in the front-rear direction. The elastic member 48 biases the second extension 45b forward.

As shown in FIG. 10 , the ring stopper 46 is a member that curves and extends in a substantially semicircular shape, and both ends of the ring stopper 46 are rotatably supported by the second hinges 44 . As a result, the ring stopper 46 is vertically rotatable about the second hinge 44 .

Further, as shown in FIG. 11, the lid lock mechanism 43 has a lock receiving portion 49 to which the hook portion 47 of the locking member 45 is locked, and a stopper receiving portion 50 to which the ring stopper 46 is locked. there is The lock receiving portion 49 is formed of a claw portion that protrudes forward from the lower portion of the front end portion of the lid peripheral wall portion 31 a of the lid body 31 . The stopper receiving portion 50 has a shape that fits 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 lid peripheral wall portion 31a. It consists of a wall.

In the lid lock mechanism 43 , when the lid body 31 closes the upper part of the cap body 30 , the hook part 47 of the lock member 45 is engaged with the lock receiving part 49 , so that the lid body 31 is locked to the upper part of the cap body 30 . is kept closed. From this state, the lock member 45 rotates about the second hinge 44 by pushing the second extension 45b of the lock member 45 rearward against the biasing force of the elastic member 48. At the same time, the first extension portion 45a is displaced forward, and the locked state of the hook portion 47 with respect to the lock receiving portion 49 is released. As a result, the biasing force of the torsion spring 42 in the first hinge 32 makes it possible to rotate the lid 31 in the opening direction, as shown in FIG. By rotating the lid 31 in the opening direction, the ring member 33 is also rotated in the opening direction together with the lid 31 .

As shown in FIG. 11, in the lid lock mechanism 43, when the lid 31 closes the top of the cap body 30, the ring stopper 46 is hooked to the stopper receiving portion 50, thereby opening the lid 31. Rotation in the direction is blocked. As a result, the lid lock mechanism 43 can prevent the lid 31 from opening 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). As shown in FIG. 14, the ring member 33 has an annular shape, and in this embodiment, has a substantially annular plate shape. As shown in FIG. 11 , the ring member 33 is arranged above the cap body 30 and the lid body 31 . Specifically, in the housed state of the ring member 33 shown in FIG. 11, the ring member 33 is arranged on the lid top wall portion 31b. placed in

The lower surface 33a of the ring member 33 has a shape that follows the shape of the lid top wall portion 31b of the lid body 31 that the lower surface 33a faces. That is, the lower surface 33a of the ring member 33 has a tapered shape that follows the tapered shape of the tapered surface 31e, that is, has a reverse tapered surface shape that matches the tapered surface 31e. Specifically, the lower surface 33a of the ring member 33 has a tapered surface that slopes downward as it goes radially outward.

An upper surface 33b of the ring member 33 has a tapered surface that slopes downward as it goes radially outward. Therefore, when the ring member 33 is housed, for example, when the user rotates the cap unit 3B in the circumferential direction to attach/detach the cap unit 3B to/from the container body 2B, the user can easily grasp the cap unit 3B together with the ring member 11 with the palm of the hand. easy to let

A first hinge (hinge) 32 connects the rear portion of the cap body 30 and the rear portion of the lid body 31 so as to be relatively rotatable in the hinge circumferential direction. The first hinge 32 connects the rear portion of the cap body 30 and the rear portion 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 body 30, the lid body 31 and the ring member 33 so as to be relatively rotatable about the hinge central axis A. As shown in FIG. The first hinge 32 has a spring mechanism including an urging portion 60 and an enclosing portion 61, which will be described later. The first hinge 32 is configured around the hinge center axis A and extends in the hinge axis direction.

As shown in FIGS. 14 to 22, the first hinge 32 includes cap bearing portions 52 and 53, lid bearing portions 54 and 55, a ring bearing portion 56, and an urging portion (ring member urging portion) 60. , an enclosure portion 61 , a shaft cover 58 , a facing member 59 , a torsion spring (lid biasing portion) 42 , and a 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, FIG. 15 is a longitudinal sectional view of the first hinge 32 including the hinge central axis A. indicates Also, FIG. 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. indicates Also, in the exploded perspective views of the cap unit 3B shown in FIGS. 17 and 18, the arrangement order of the constituent members is partly different from the arrangement relationship of the constituent members after assembly (the assembled state).

One of the cap bearing portions 52, 53 and the ring bearing portion 56 is provided in two with an interval in the hinge axis direction, and the other of the cap bearing portions 52, 53 and the ring bearing portion 56 is provided with two of the above two. One is placed in between. In the present embodiment, of the cap bearing portions 52 and 53 and the ring bearing portion 56, two cap bearing portions 52 and 53 are provided spaced apart from each other in the hinge axis direction, and the ring bearing portion 56 is provided between the two caps. One is arranged between the bearings 52 and 53 .

As shown in FIGS. 17, 18, 20 and 21, the cap bearings 52 and 53 protrude rearward and upward from the rear end of the top wall 30c of the cap body 30. As shown in FIGS. That is, the cap bearing portions 52 and 53 are provided on the cap body 30 . The cap bearing portions 52 and 53 are formed integrally with the cap body 30 as a single member. Two cap bearing portions 52 and 53 are provided in this embodiment.

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

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

The housing hole portion 52b is a circular hole with a bottom centered on the central axis A of the hinge. The housing hole portion 52b opens in the end surface of the first cap bearing portion 52 facing one side in the hinge axis direction, and extends from this end surface to the other side in the hinge axis direction.

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

The shaft hole 52a is a circular hole extending in the hinge axis direction. The inner diameter of the shaft hole 52a is smaller than that of the accommodation hole 52b. One end of the shaft hole 52a in the hinge axis direction opens to the bottom surface of the housing hole 52b. The end of the shaft hole 52a on the other side in the hinge axis direction opens to the cap end surface 52e.

The groove portion 52c is recessed outward in the hinge radial direction from the inner peripheral surface of the housing 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 accommodation hole portion 52b in the hinge axis direction. In this embodiment, the width dimension of the groove portion 52c in the hinge circumferential direction decreases toward the outer side in the hinge radial direction.

The shaft protrusion engaging portion 52d is recessed outward in the hinge radial direction from the inner peripheral surface of the shaft hole 52a and has a groove shape extending in the hinge axial direction. The shaft protrusion engaging portion 52d is arranged over the entire length of the shaft hole 52a in the hinge axial direction. One end of the shaft protrusion engaging portion 52d in the hinge axis direction opens to the bottom surface of the housing hole portion 52b. The other end of the shaft protrusion engaging portion 52d in the hinge axis direction opens to the cap end surface 52e. In this embodiment, the width dimension in the hinge circumferential direction of the shaft protrusion locking portion 52d increases toward the outside in the hinge radial direction.

As shown in FIGS. 15 to 18, the second cap bearing portion 53 has a substantially annular plate shape centered on the central axis A of the hinge. 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 side surface 53b is arranged on the end surface of the second cap bearing portion 53 facing one side in the hinge axis direction. The inner side surface 53b has a planar shape extending in a direction perpendicular to the central axis A of the hinge.

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

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

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

The two lid bearings 54 , 55 include a first lid bearing 54 and a second lid bearing 55 . The first lid bearing portion 54 is arranged on one side of the two lid bearing portions 54 and 55 in the hinge axis direction. The first lid bearing portion 54 is arranged adjacent to one side of the first cap bearing portion 52 in the hinge axis direction. The second lid bearing portion 55 is arranged on the other side of the two lid bearing portions 54 and 55 in the hinge axis direction. The second lid bearing portion 55 is arranged adjacent to the other side of the second cap bearing portion 53 in the hinge axis direction.

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

The mounting recess 54b is recessed or notched to one side in the hinge axis direction from the end surface of the first lid bearing portion 54 facing the other side in the hinge axis direction. The bottom surface of the mounting recess 54b faces the other side in the hinge axis direction. The bottom surface of the mounting recess 54b is planar and extends in a direction perpendicular to the central axis A of the hinge.

The rotary contact portion 54c protrudes to the other side in the hinge axis direction from the bottom surface of the mounting recess 54b. The rotary contact portion 54c is rib-shaped and is arranged above the mounting recess 54b and extends in the front-rear direction. The rotary contact portion 54c is arranged to cover the mounting recess 54b from above. The rotary contact portion 54c has a curved portion extending in the circumferential direction of the hinge and a linear portion extending in the front-rear direction.

The shaft hole 54a has a substantially circular hole shape extending in the hinge axis direction. One end of the shaft hole 54a in the hinge axial direction opens to the end surface of the first lid bearing portion 54 facing one side in the hinge axial direction. The other end of the shaft hole 54a in the hinge axis direction opens to the bottom surface of the mounting recess 54b.

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

The inner side surface 55b is arranged on the end surface of the second lid bearing portion 55 facing one side in the hinge axis direction. The inner side surface 55b has a planar shape extending in a direction perpendicular to the central axis A of the hinge. The inner side surface 55b contacts the outer sliding contact surface 53c of the second cap bearing portion 53 in a slidable manner.

The shaft hole 55a has a substantially circular hole shape penetrating the second lid bearing portion 55 in the hinge axis direction. One end of the shaft hole 55a in the hinge axis direction opens to the inner side surface 55b. The end of the shaft hole 55a on the other side in the hinge axis direction opens to the end face of the second lid bearing portion 55 facing the other side in the hinge axis direction.

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

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

The ring bearing portion 56 is arranged adjacent to the cap bearing portions 52 and 53 in the hinge axis direction. Specifically, the ring bearing portion 56 is arranged adjacent to the other side of the first cap bearing portion 52 in the hinge axis direction, and is arranged adjacent to one side of the second cap bearing portion 53 in the hinge axis direction. be. That is, the ring bearing portion 56 is arranged between the pair of cap bearing portions 52 and 53 in the hinge axis direction.
That is, in this embodiment, the first hinge (hinge) 32 is provided on the cap bearing portions 52 and 53 provided on the cap body 30, the lid bearing portions 54 and 55 provided on the lid body 31, and the ring member 33, A ring bearing portion 56 arranged side by side with the cap bearing portions 52, 53 and the lid bearing portions 54, 55 in the hinge axis direction, and the cap bearing portions 52, 53, the lid bearing portions 54, 55, and the ring bearing portion 56 are hinged. and a hinge shaft 57 pivotally supported around the central axis A so as to be relatively rotatable.

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

In this embodiment, the housing recess 56b is recessed in the ring bearing portion 56 and extends in the hinge axis direction. Specifically, the accommodation recess 56b is a circular hole with a bottom centered on the hinge central axis A, and is opened at the end surface of the ring bearing portion 56 facing the other side in the hinge axis direction. extending toward one side of the

The ring end surface 56c is an end surface of the ring bearing portion 56 facing one side in the hinge axis direction. The outer peripheral portion of the ring end face 56c has a planar shape extending in a direction perpendicular to the central axis A of the hinge. The cap end face 52e of the first cap bearing portion (cap bearing portion) 52 facing the other side in the hinge axial direction and the ring end face 56c of the ring bearing portion 56 facing the one side in the hinge axial direction (the outer peripheral portion thereof) are mutually Sliding contact.

Further, the ring end surface 56c has a concave surface 56d that is arranged inside the outer peripheral portion of the ring end surface 56c in the hinge radial direction. The concave surface 56d is recessed on the other side in the hinge axis direction from the outer peripheral portion of the ring end surface 56c.

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

The biasing portion 60 is elastically deformable. As shown in FIGS. 15 to 18, the biasing portion 60 of this embodiment is a metal compression coil spring that is elastically deformable in the hinge axis direction. The biasing portion 60 is housed in the housing recess 56b. One end of the biasing portion 60 in the hinge axis direction contacts the bottom surface of the housing recess 56b facing the other side in the hinge axis direction. The end of the biasing portion 60 on the other side in the hinge axis direction contacts the end surface (biasing portion contact surface 61b described later) of the enclosure portion 61 facing one side in the hinge axis direction.

The biasing portion 60 biases the ring bearing portion 56 toward one side in the hinge axis direction with respect to the second cap bearing portion (cap bearing portion) 53 via the enclosing portion 61 . That is, the biasing portion 60 biases the ring member 33 toward one side in the hinge axis direction with respect to the cap body 30 . Further, the biasing portion 60 allows the ring member 33 to be displaced to the other side in the hinge axis direction with respect to the cap body 30 by elastically deforming.

The enclosure portion 61 has a cylindrical shape centered on the hinge central 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 axis direction and is arranged on the other side of the biasing portion 60 in the hinge axis direction. The enclosing portion 61 is interposed between the second cap bearing portion 53 and the biasing portion 60 in the hinge axis direction. At least a portion of the enclosure portion 61 is inserted into the accommodation recess 56b. As a result, the enclosing part 61 encloses the urging part 60 in the accommodation recess 56b. A portion of the enclosure portion 61 other than the portion inserted into the accommodation recess 56 b is exposed to the outside between the second cap bearing portion 53 and the ring bearing portion 56 .

In the present embodiment, at least part of the enclosing portion 61 (end portion on one side in the hinge axis direction) is inserted into the housing recess 56b, so that the enclosing portion 61 is not completely separated from the housing recess 56b. , the biasing portion 60 sealed inside the housing recess 56b is not exposed to the outside. Therefore, the urging portion 60 is not visible from the outside, and a good appearance can be obtained.

The encapsulating portion 61 is made of a material different from that of the second cap bearing portion 53, such as polyacetal (POM) or acrylonitrile-butadiene-styrene (ABS). Materials can be preferably used.

The enclosure portion 61 has an urging portion contact surface 61b, an outer contact surface 61c, and a shaft hole 61a.
The biasing portion contact surface 61b is arranged on the end surface of the enclosure portion 61 facing one side in the hinge axis direction. The biasing portion contact surface 61b contacts the end of the biasing portion 60 on the other side in the hinge axis direction.

The outer contact surface 61c is arranged on the end surface of the enclosure portion 61 facing the other side in the hinge axis direction. The outer contact surface 61c contacts the inner surface 53b of the second cap bearing portion 53 in a slidable manner.

The shaft hole 61a penetrates the enclosure 61 in the hinge axis direction. One end of the shaft hole 61a in the hinge axis direction opens to the biasing portion contact surface 61b. The other end of the shaft hole 61a in the hinge axis direction opens to the outer contact surface 61c. The shaft hole 61a is a circular hole extending in the hinge axis direction.

In the cap unit 3B of the present embodiment, the durability of the first hinge 32 can be improved by constructing the enclosing portion 61 excellent in wear resistance separately from the second cap bearing portion 53. be. In addition, by forming the encapsulating portion 61 separately from the second cap bearing portion 53, it is possible to improve moldability of the cap body 30 and facilitate dimensional control. As for the second cap bearing portion 53, the encapsulation portion 61 does not have to be formed separately if the influence on the moldability and dimensions is not taken into consideration. That is, for example, the second cap bearing portion 53 and the enclosing portion 61 may be integrated.

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

The shaft cover 58 is made of a material different from that of the cap bearings 52, 53, such as polyacetal (POM) or acrylonitrile-butadiene-styrene (ABS), which is superior in wear resistance to the cap bearings 52, 53. Materials can be preferably used.

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

The small-diameter cylindrical portion 58b has a cylindrical shape centered on the hinge central axis A and extends in the hinge axis direction. The small-diameter cylindrical portion 58b includes the shaft hole 52a of the first cap bearing portion 52, the shaft hole 56a and the housing recess 56b of the ring bearing portion 56, the biasing portion 60, the shaft hole 61a of the enclosure portion 61, and the second cap bearing portion. 53 is inserted into each of the shaft holes 53a. The end surface of the small-diameter cylindrical portion 58b facing the other side in the hinge axis direction contacts the inner surface 55b of the second lid bearing portion 55 in a slidable manner.

The large-diameter tubular portion 58c is arranged on one side of the small-diameter tubular portion 58b in the hinge axis direction. The large-diameter tubular portion 58c has a substantially cylindrical shape with a larger diameter than the small-diameter tubular portion 58b, and is connected to one end of the small-diameter tubular portion 58b in the hinge axis direction. Specifically, the large-diameter cylindrical portion 58c has a substantially bottomed cylindrical shape having an opening in the end face of the shaft cover 58 facing one side in the hinge axis direction. The large-diameter tubular portion 58 c is arranged in the housing hole portion 52 b 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 circular with the center axis A of the hinge as the center. One end of the shaft hole 58a in the hinge axis direction opens to the bottom wall of the large-diameter cylindrical portion 58c. The end of the shaft hole 58a on the other side in the hinge axis direction opens to the end surface of the small-diameter cylindrical portion 58b facing the other side in the hinge axis direction.

The protrusion 58d has a rib shape that protrudes outward in the hinge radial direction from the outer peripheral surface of the large-diameter cylindrical portion 58c and extends in the hinge axis direction. In this embodiment, the width dimension of the protruding protrusion 58d in the hinge circumferential direction decreases toward the outer side in the hinge radial direction. The projecting protrusion 58 d is locked in the groove 52 c of the first cap bearing portion 52 .

The shaft convex portion 58e has a rib shape that protrudes outward in the hinge radial direction from the outer peripheral surface of the small-diameter tubular portion 58b and extends in the hinge axial direction. The shaft projection 58e is arranged at one end of the small-diameter cylindrical portion 58b in the hinge axis direction, and is connected to the other end of the projecting projection 58d in the hinge axis direction. In this embodiment, the width dimension of the shaft protrusion 58e in the hinge circumferential direction increases toward the outside in the hinge radial direction. The shaft projection 58 e is locked to the shaft projection locking portion 52 d of the first cap bearing portion 52 .

The shaft cover 58 is secured to the first cap bearing portion 52 by locking the protruding portion 58d and the groove portion 52c and locking the shaft projection portion 58e and the shaft projection portion locking portion 52d. It is not rotatable in the hinge circumferential direction. That is, the shaft cover 58 is attached to the cap main body 30 in a state in which rotation in the hinge circumferential direction is restricted.

As shown in FIGS. 15 to 18, the facing member 59 is a substantially cylindrical member centered on the central axis A of the hinge. Specifically, the facing member 59 has a substantially bottomed cylindrical shape having an opening at the other end in the hinge axis direction. The facing member 59 is arranged adjacent to one side of the shaft cover 58 in the hinge axial direction. The facing member 59 is arranged over the interiors of the accommodation hole portion 52b of the first cap bearing portion 52 and the mounting recess portion 54b of the first lid bearing portion 54 . The bottom wall portion of the facing member 59 contacts 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 arranged adjacent to each other so that their openings face each other in the hinge axis direction.

The facing member 59 is made of a material different from that of the first lid bearing portion 54, such as polyacetal (POM) or acrylonitrile-butadiene-styrene (ABS), which is superior in abrasion resistance to the first lid bearing portion 54. can be suitably used.

In the cap unit 3B of the present embodiment, the durability of the first hinge 32 can be improved by constructing the facing member 59 excellent in wear resistance separately from the first lid bearing portion 54. be. Note that the first lid bearing portion 54 is not necessarily configured with the facing member 59 separately. may be

The facing member 59 has a flange portion 59b, a lid pressing portion 59c, and a shaft hole 59a.
The flange portion 59b is disposed at one end of the facing member 59 in the hinge axial direction, and has a flange shape projecting outward from the outer peripheral surface of the facing member 59 in the hinge radial direction. A surface of the flange portion 59b facing one side in the hinge axis direction contacts the bottom surface of the mounting recess 54b. The surface of the flange portion 59b facing the other side in the hinge axis direction slidably contacts the end surface of the first cap bearing portion 52 facing the one side in the hinge axis direction.

The lid pressing portion 59c is arranged at one end of the facing member 59 in the hinge axis direction. The lid pressing portion 59c is formed in a planar shape by cutting out a portion of the flange portion 59b in the hinge circumferential direction. The lid pressing portion 59c contacts the rotation contact portion 54c of the first lid bearing portion 54 from below.

The shaft hole 59a penetrates the bottom wall portion of the facing member 59 in the hinge axis direction. The shaft hole 59a has a circular hole shape centering on the central axis A of the hinge.

The torsion spring 42 is arranged inside the large-diameter cylindrical portion 58 c of the shaft cover 58 and the facing member 59 . The torsion spring 42 is a metal torsion coil spring centered on the central axis A of the hinge. As shown in FIG. 18, the torsion spring 42 includes a winding portion 42a wound in a coil shape, one protruding end 42b extending from one end of the winding portion 42a in the hinge axis direction, and the other projecting end 42c extending from the other end of the winding portion 42a in the hinge axis direction.

Although not shown, the torsion spring 42 is configured such that one projecting end 42b is engaged with the peripheral wall portion of the facing member 59 and the other projecting end 42c is engaged with the peripheral wall portion of the large-diameter cylindrical portion 58c. 1 hinge 32 .

With the above configuration, when the user rotates the lid body 31 from the open position in the direction opposite to the opening direction, that is, in the closing direction, the rotation contact portion 54c of the first lid bearing portion 54 and the lid pressing portion 59 c are in contact with each other, the facing member 59 is also rotated in the closing direction together with the lid 31 . As a result, the opening angle between one protruding end 42b and the other protruding end 42c of the torsion spring 42 is elastically deformed in a direction that narrows, and the repulsive force (restoring deformation force) of the torsion spring 42 causes the lid to move against the cap body 30. It is possible to bias the body 31 toward the opening direction. Further, the ring member 33 is also indirectly urged in the opening direction via the lid 31 by urging the lid 31 in the opening direction.

When the lid body 31 is rotated in the opening direction and the closing direction, the lid body 31 and the facing member 59 rotate in the hinge circumferential direction, while the cap body 30 and the shaft cover 58 rotate in the hinge circumferential direction. do not. Therefore, the first lid bearing portion 54 is connected to the first cap bearing portion 52, the facing member 59 is connected to the first cap bearing portion 52 and the shaft cover 58, and the second lid bearing portion 55 is connected to the second cap bearing portion 53 and the shaft cover. 58, respectively.

As shown in FIGS. 15 and 16, the hinge shaft 57 has a cylindrical shape centered on the hinge central axis A and extends in the hinge axis direction. The hinge shaft 57 is made of metal. The hinge shaft 57 includes the first lid 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 biasing portion 60, the enclosure portion 61, and the second cap bearing portion. 53 and the second lid bearing portion 55 are provided so as to penetrate in the hinge axis direction. Further, the hinge shaft 57 supports the cap bearing portions 52 and 53 and the ring bearing portion 56 through a shaft cover 58 so as to be relatively rotatable about the central axis A of the hinge.

Further, as shown in FIGS. 16, 21 and 22, in the present embodiment, one of the cap end surface 52e and the ring end surface 56c serves as the click mechanism (storage state holding mechanism 22) of the first hinge 32. The other of the cap end face 52e and the ring end face 56c has a convex portion 62 capable of overcoming the stepped portion 63 around the hinge central axis A against the biasing force of the biasing portion 60. As shown in FIG.

Specifically, in this embodiment, the cap end face 52e has a projecting stepped portion 63 that protrudes from the cap end face 52e to the other side in the hinge axis direction. Further, the ring end face 56c has a protruding portion 62 that protrudes from the concave face 56d to one side in the hinge axis direction.

The cap unit 3B of the present embodiment includes a storage state holding mechanism 22 that holds the posture of the ring member 33 when the ring member 33 is in the storage state. The storage state holding mechanism 22 includes a convex portion (locked portion) 62 provided on the ring member 33 and a stepped portion (locking portion) locked to the convex portion 62 of the ring member 33 in the housed state. 63 and . Also in this embodiment, the storage state holding mechanism 22 is arranged on the first hinge 32 side (that is, on the rear side) of the cap central axis C in the front-rear direction.
When the ring member 33 is rotated toward the opening direction about the hinge center axis A by a user's operation or the like with a torque equal to or higher than a predetermined torque, the convex portion 62 rides over the stepped portion 63 in the hinge circumferential direction.

More specifically, in the process of moving the ring member 33 from the housed state to the open state, the projection 62 rotates together with the ring member 33 around the hinge center axis A, and the ring member 33 moves to the predetermined position. By rotating with the above torque, the stepped portion 63 is pushed toward the other side in the hinge axis direction against the biasing force of the biasing portion 60 . It is possible to get over around A.

That is, in the process of shifting the ring member 33 from the retracted state to the open state, the convex portion 62 can overcome the biasing force of the biasing portion 60 and climb over the stepped portion 63 in the hinge circumferential direction. be. Specifically, in the above process, the convex portion 62 is brought into contact with the stepped portion 63, thereby generating a force that displaces the ring bearing portion 56 (ring member 33) toward the other side in the hinge axis direction. The portion 60 is elastically deformed. The elastic deformation of the biasing portion 60 displaces the ring bearing portion 56 to the other side in the hinge axial direction, and the convex portion 62 climbs over the stepped portion 63 in the hinge circumferential direction.

Contrary to the above, in the process of returning the ring member 33 from the open state to the stored state, the ring member 33 rotates forward, and immediately before entering the stored state, the convex portion 62 climbs over the stepped portion 63, The stored state holding mechanism 22 again holds the ring member 33 in the stored state posture. When the user climbs over, the user can get a click feeling and can feel that the operation is completed.

When the ring member 33 in the housed state rotates rearward (opening direction), an operation resistance is generated when the convex portion 62 climbs over the stepped portion 63 to the opposite side in the hinge circumferential direction. It is possible to prevent unintended rotation to the rear side. Furthermore, when the user rotates it rearward, the user can get a click feeling due to the operation resistance of getting over it, and can feel that the rotation operation has started.

In the present embodiment, the convex portion 62 climbs over the stepped portion 63 immediately before the ring member 33 enters the retracted state. , you can freely set the jumping position. For example, in the reference example of the present embodiment, the convex portion 62 may climb over the stepped portion 63 immediately before the ring member 33 is in the open state and is rotated rearward to the limit. In this case, the ring member 33 is held in the open state by locking the convex portion 62 and the stepped portion 63 . Therefore, the convex portion 62 and the stepped portion 63 function as an open state holding mechanism that holds the posture of the ring member 33 when the ring member 33 is in the open state.

As another example, the convex portion 62 may climb over the stepped portion 63 at the position where the ring member 33 stands up in the open state. In this case, the user can get a click feeling due to the operation resistance of the climbing, and can feel that the ring member 33 has been erected upward.

Furthermore, in the present embodiment, the biasing portion 60 biases the ring member 33 toward the hinge axis direction with respect to the cap body 30 . For this reason, the ring member 33 is slidably resisted when it rotates. It is possible to stop. As a result, the user can place the beverage container 1B with the ring member 33 standing upward, and can immediately carry the beverage container 1B by hooking the ring member 33 with a finger.
Due to the sliding resistance, it is possible to stop (stand still) at any position during rotation of the ring member 33 around the hinge center axis A, not just at the position where it stands upright.

Further, in the housed state holding mechanism 22 of the present embodiment, the convex portion 62 climbs over the stepped portion 63. However, referring to the housed state holding mechanism 21 of the first embodiment, the convex portion 62 moves over the stepped portion 63. It is good also as a structure which does not get over and stays on. For example, one of the convex portion 62 and the stepped portion 63 is made concave with respect to the other. A case where the stepped portion 63 has a concave shape will be described, and the concave stepped portion is referred to as 63'.

In this case, by rotating the ring member 33 around the hinge central axis A from the state in which the projection 62 is accommodated in the stepped portion 63', the projection 62 is rotated together with the ring member 33, and the ring member 33 is rotated with a torque greater than or equal to a predetermined value, pushing the ring bearing portion 56 (ring member 33) against the biasing force of the biasing portion 60 toward the other side in the hinge axis direction, while pushing the step portion 63'. It is possible to ride around the central axis A of the hinge. After riding on it, the ring member 33 is rotated around the hinge center axis A while it is in the riding state, so that the projection 62 comes into slidable contact with the cap end surface 52e.

Even if there is no biasing by the biasing portion 60 in the present embodiment, with this structure, the convex portion 62 is pressed against the cap end surface 52e after the convex portion 62 rides over the stepped portion 63'. The ring member 33 is stopped (stationary) at an arbitrary position while it is being rotated around the hinge center axis A by adjusting the sliding resistance according to the degree of elastic deformation caused by the sliding, friction due to the material and shape, etc. It is possible to In other words, when one side slides on the other side, high sliding resistance can be set for most of the sliding stroke, and the ring member 33 is positioned along the hinge center axis A. It is possible to stop at an arbitrary position during rotation. This is the same when the biasing portion 19 is not provided in the first embodiment.

Contrary to the above description, a case where the protrusion 62 is returned from the state in which the protrusion 62 rides over the stepped portion 63' around the hinge center axis A to the state in which the protrusion 62 is housed in the stepped portion 63' will be described. In this case, by rotating the ring member 33 about the hinge central axis A in the direction opposite to the above, the projection 62 rotates in the hinge circumferential direction with respect to the stepped portion 63', and these mutually move in the hinge axis direction. , the biasing portion 60 is restored and deformed, the convex portion 62 is displaced toward one side in the hinge axial direction, and the convex portion 62 is reinserted (locked) into the stepped portion 63'. ) is done.
As described above, even if there is no biasing by the biasing portion 60 in the present embodiment, the degree of elastic deformation caused by pressing the convex portion 62 against the cap end surface 52e, the friction due to the material and shape, etc., may cause sliding. By adjusting the dynamic resistance, it is possible to restore the state in which the convex portion 62 is housed in the stepped portion 63'.
Further, as described above, the same effect can be obtained by replacing the convex portion 62 and the stepped portion 63 so that the convex portion 62 has a recessed shape with respect to the stepped portion 63 .

On the other hand, a case where the cap end surface 52e and the ring end surface 56c slide due to riding over the convex portions like the convex portion 62 and the stepped portion 63 of the present embodiment will be described. In this case, the state of the ring member 33 is not maintained only by the convex portion 62 and the stepped portion 63, which are both convex shapes, but the state in which the ring member 33 is rotated to the limit in either the closing direction or the opening direction, and By providing the convex portion 62 and the stepped portion 63 immediately before the rotation limit, it functions as a storage state holding mechanism or an open state holding mechanism. In other words, there is a position where the ring member 33 cannot rotate any further, and when the ring member 33 is rotated so as to get out of that state, the sliding resistance is temporarily increased so that the overriding is performed. Since the sliding resistance is low after overcoming, the ring member 33 can be rotated smoothly. That is, when one gets over the other, it is possible to set a high sliding resistance only temporarily when getting over.

Therefore, if there is no mechanism that provides sliding resistance, such as the biasing of the ring member 33 against the cap body 30 by the biasing portion 60 in the direction of the hinge axis, it would not be possible to ride over only one pair of convex shapes. It is difficult to stop (stand still) the member 33 in an upward standing position or in an arbitrary position during rotation (that is, a position where the sliding resistance is low). Naturally, it is possible to stop at an arbitrary position by preparing two sets of crossing shapes between convex shapes and creating a pseudo concave shape between them.

When the ring member 33 is stopped at an arbitrary position during rotation about the hinge center axis A by the sliding resistance of the urging portion 60, the urging direction is one of the hinge axis directions. It does not matter which direction, whether it is the tightening side T1, which is the side, or the loose side T2, which is the other side in the hinge axial direction.

As described above, in this embodiment, the first hinge 32 has the stored state holding mechanism 22 as a click mechanism including the stepped portion 63 and the convex portion 62, and the click mechanism is such that the ring member 33 Gives a click feeling when rotating in the opening direction or the closing direction.
Further, in the present embodiment, the sliding resistance of the biasing portion 60 allows the ring member 33 to be stopped (stationary) at an arbitrary position during rotation about the hinge center axis A. FIG.

According to the cap unit 3B and the beverage container 1B of this embodiment described above, the same effect as the above-described embodiment can be obtained.
Specifically, as in the present embodiment, even in the configuration in which the lid 31 for opening and closing the liquid passage port 37 of the mouth forming member 36 and the lid lock mechanism 43 for fixing the lid 31 at the closed position are provided, the first As in the embodiment, the ring member 33 can be set in an open state or a retracted state, and the posture of the ring member 33 can be suitably selected, which is highly convenient. In addition, since the stored state holding mechanism 22 is provided to hold the ring member 33 in the stored state, it is possible to prevent the ring member 33 in the stored state from being unintentionally opened, which is convenient and easy to operate. Good nature. Moreover, the threaded state between the cap unit 3B and the container body 2B can be maintained well.

Specifically, in the first hinge 32 of the present embodiment, the direction in which the ring bearing portion 56 (ring member 33) is biased by the biasing portion 60 is one side of the hinge axial direction, that is, the ring member 33. is generally biased toward the tightening side T1 in the circumferential direction. Further, by pushing 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 axis direction. The direction of this sliding movement is generally the loose side T2 in the circumferential direction. That is, the rotational force applied to the ring member 33 toward the loose side T2 in the circumferential direction can be absorbed by the elastic deformation of the urging portion 60, and transmission of this rotational force to the cap main body 30 can be prevented.

More specifically, conventionally, for example, when a user carries a beverage container with his/her fingers passed through the ring member, depending on how the user holds the beverage container, the weight of the container body causes the cap unit to rotate toward the loose side in the circumferential direction. There was a risk of it happening. Similarly, even if the beverage container is placed in an inverted position and dropped (with the cap unit pointing downward in the vertical direction), depending on how it hits the drop surface, the cap unit may loosen in the circumferential direction. There was a risk of it turning sideways. In these cases, if the cap unit rotates toward the loosening side in the circumferential direction, the sealing between the overhanging portion and the mouth forming member by the waterproof packing is released. substance) may leak out of the container.

On the other hand, in the present embodiment, the elastic deformation of the urging portion 60 absorbs the rotational force toward the loose side T2 of the ring member 33 in the circumferential direction, thereby preventing the cap body 30 from rotating. Therefore, the screwing between the cap unit 3B and the container body 2B will not loosen, and the beverage contained in the container body 2B will not leak out. When a beverage is to be stored in the container body 2B, or when the container body 2B and the cap unit 3B are to be disassembled and washed, the entire cap unit 3B or the peripheral wall portion 30a of the cap body 30 is grasped and the cap is held. By rotating the unit 3B to the loose side T2 in the circumferential direction, the user can remove the cap unit 3B regardless of the biasing by the biasing portion 60. FIG. Of course, the cap unit 3B can also be rotated to the tightening side T1 in the circumferential direction by grasping the entire cap unit 3B or the peripheral wall portion 30a of the cap main body 30 as described above without any problem.

In this embodiment, two cap bearing portions 52 and 53 are provided on the cap body 30 side, two lid bearing portions 54 and 55 are provided on the lid body 31 side, and one ring bearing portion is provided on the ring member 33 side. 56, but the same effect can be obtained even if the number and arrangement of these are interchanged.
That is, for example, one cap bearing portion may be provided on the cap 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 axis direction. Furthermore, it is also possible to adopt a configuration in which two lid bearing portions are provided on the lid body 31 side so as to sandwich from both outer sides in the hinge axis direction.
Alternatively, one cap bearing portion is provided on the cap main body 30 side, two lid bearing portions are provided on the lid body 31 side so as to sandwich the one cap bearing portion from both sides in the hinge axial direction, and furthermore, the hinge axial direction of the cap bearing portion is provided. It is also possible to adopt a configuration in which two ring bearing portions are provided on the ring member 33 side so as to sandwich from both outer sides.
Alternatively, one lid bearing portion is provided on the lid body 31 side, two ring bearing portions are provided on the ring member 33 side so as to sandwich the one lid bearing portion from both sides in the hinge axis direction, and further sandwiched from both outer sides. It is also possible to adopt a configuration in which two cap bearing portions are provided on the cap main body 30 side as shown.
Alternatively, one ring bearing is provided on the ring member 33 side, two lid bearings are provided on the lid body 31 side so as to sandwich the one ring bearing from both sides in the hinge axis direction, and further sandwiched from both outer sides. It is also possible to adopt a configuration in which two cap bearing portions are provided on the cap main body 30 side as shown.
That is, the order in which the cap bearing portion, the lid bearing portion, and the ring bearing portion are arranged in the hinge axis direction can be appropriately selected, and the ring bearing portion is on one side in the hinge axis direction with respect to the cap bearing portion or the lid bearing portion. It is important that it is biased toward the tightening side T1.

Also in this embodiment, since the first hinge 32 has the retracted state holding mechanism 22 as a click mechanism, when the ring member 33 is rotated in the retracted state in the opening direction, the convex When the portion 62 climbs over the stepped portion 63, a click feeling can be obtained, and the start of the rotation operation can be intuitively recognized. In addition, when the ring member 33 in the housed state rotates in the opening direction, resistance is generated by the biasing force when the projection 62 climbs over the stepped portion 63. Therefore, unintended rotation of the ring member 33 in the opening direction Suppressed.

Further, in this embodiment, the lower surface 33a of the ring member 33 has a shape that follows the shape of the lid top wall portion 31b of the lid body 31 that the lower surface 33a faces. Specifically, in the present 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 a reverse tapered surface following the tapered surface 31e. shape.

In this case, the lower surface 33a of the ring member 33 can be arranged so as to be in close contact with the outer peripheral portion of the lid top wall portion 31b of the lid body 31 . In other words, when the ring member 33 is in the retracted state, it fits well on the lid 31 . Therefore, it is easy to stabilize the attitude of the ring member 33 in the stored state. Further, by bringing the ring member 33 into close contact with the outer peripheral portion of the lid top wall portion 31b, it is possible to suppress the bulkiness of the overall cap unit 3B in the vertical direction, thereby facilitating further compactness. Furthermore, in this case, by putting the ring member 33 in the retracted state, the cap unit 3B has an excellent aesthetic appearance.

It should be noted that the present invention is not limited to the above-described embodiments, and, for example, as described below, changes in configuration can be made without departing from the gist of the present invention.

In the first and second embodiments described above, one side in the hinge axial direction corresponds to the tight side T1 in the circumferential direction, and the other side in the hinge axial direction corresponds to the loose side T2 in the circumferential direction. do not have. One side in the hinge axial direction may correspond to the loose side T2 in the circumferential direction, and the other side in the hinge axial direction may correspond to the tight side T1 in the circumferential direction.
In this case, when a force directed toward the tightening side T1 (the other side in the hinge axis direction) in the circumferential direction in which the cap units 3A, 3B and the container bodies 2A, 2B are screwed together acts on the ring members 11, 33. This force is absorbed by elastic deformation of the urging portions 19 and 60, thereby suppressing excessive tightening of the screw engagement. Therefore, when the cap units 3A and 3B are removed from the container main bodies 2A and 2B next time, it is possible to prevent problems such as the operability being affected due to the screwed state being too tight (the cap units being unable to be removed).

Further, the urging portions 19 and 60 urge the ring members 11 and 33 against the cap bodies 9 and 30 toward one side in the hinge axis direction and toward the other side in the hinge axis direction. You can force it.

Moreover, the urging portions 19 and 60 may be elastically deformable members, and it is also possible to use an elastic member such as silicone rubber or elastomer.

In the first embodiment, the first ring bearing portion 16 and the encapsulating portion 20 may be integrally formed without being separated from each other if the effect of the urging portion 19 on the appearance is not taken into consideration. Alternatively, the surface of the first ring bearing portion 16 (at least the end face facing the other side in the hinge axis direction) may be coated with a wear-resistant coating so that the first ring bearing portion 16 and the biasing portion 19 are in direct contact. .

Further, 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 accommodation recess portion 15b, and the other (the first ring bearing portion 16 ), and the enclosing sliding surface 20c of the enclosing portion 20 slides on the bearing sliding surface 16b. That is, the one may be the first ring bearing portion 16 and the other may be the cap bearing portion 15 .

Further, in the first embodiment, one of the bearing sliding surface 16b and the enclosed sliding surface 20c (bearing sliding surface 16b) has a concave stepped portion 16c, and the bearing sliding surface 16b and the enclosed sliding surface 20c Although the example in which the other (encapsulation sliding surface 20c) has the convex portion 20e has been given, the configuration may be such that the one and the other are interchanged. That is, one of them may be the enclosed sliding surface 20c and the other may be the bearing sliding surface 16b.

Further, in the second embodiment, an example in which the lock member 45 of the lid lock mechanism 43 is configured to be rotatable around the second hinge 44 was given, but the invention is not limited to this. Although not shown, the lock member may be configured to be slidable in the front-rear direction.

Further, in the second embodiment, although not shown, when the cover bearing portion and the ring bearing portion of the first hinge (hinge) 32 are arranged adjacent to each other in the hinge axial direction, the first The hinge 32 is recessed in one of the lid bearing portion and the ring bearing portion and extends in the hinge axis direction, and includes a housing recess for housing the biasing portion, and an enclosing portion for enclosing the biasing portion in the housing recess. It is also possible to have
In this case, since the urging portion can be enclosed in the accommodation recess by the enclosing portion, the urging portion can be prevented from being exposed to the outside, and the appearance design of the cap unit 3B and the beverage container 1B can be improved. can. In addition, by enclosing the urging portion, it is possible to prevent the function of the urging portion from deteriorating or becoming unstable due to adhesion of dirt, for example.

In the above-described first and second embodiments, an example in which the present invention is applied to the beverage containers 1A and 1B provided with heat and cold insulation functions by the container bodies 2A and 2B having a vacuum insulation structure was given. Not exclusively. That is, the present invention can be widely applied to capped containers in which the cap unit is detachably attached to the mouth and neck portion of the container body.

The present invention may combine the configurations described in the above-described embodiments and modifications without departing from the gist of the present invention, and addition, omission, replacement, and other modifications of the configuration are possible. . Moreover, the present invention is not limited by the above-described embodiments and the like, but is limited only by the scope of the claims.

DESCRIPTION OF SYMBOLS 1A, 1B... Beverage container 2c... Mouth-neck part 2d... Upper opening part 2A, 2B... Container main body 3A, 3B... Cap unit 9, 30... Cap main body 9b, 30c... Top wall part 11 , 33... Ring member, 11a, 33a... Lower surface, 12... Hinge, 15, 52, 53... Cap bearing portion, 15b, 56b... Accommodating recess, 16, 17, 56... Ring bearing portion, 16b... Bearing sliding surface, 16c, 63... stepped portion (click mechanism), 18, 57... hinge shaft, 19, 60... biasing portion, 20, 61... enclosing portion, 20c... enclosing sliding surface, 20e, 62... convex portion (click mechanism) , 31 Lid body 31b Lid top wall portion 32 First hinge (hinge) 36 Mouth forming member 37 Liquid passage port 43 Lid locking mechanism 52e Cap end face 54, 55 Lid Bearing portion 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 (loose side)

Claims (9)

A cap unit that is detachably attached by screwing to the mouth and neck of a container body with an open top,
a cap body that closes the upper opening of the container body;
an annular ring member arranged above the cap body;
a hinge that connects the ring member to the cap body so as to be rotatable about the hinge center axis;
the hinge has an elastically deformable biasing portion,
The biasing portion biases the ring member against the cap body toward one side in a hinge axis direction in which the hinge central axis extends.
cap unit. a mouth-forming member provided in the cap body, the mouth-forming member having a liquid passage opening communicating with the inside of the container body;
It is arranged between the cap main body and the ring member in the vertical direction to cover the liquid passage port, and rotates with the cap main body via the hinge in a state of being biased in the opening direction around the hinge center axis. a lid movably connected;
a lid lock mechanism that fixes the lid body to the cap body in a closed position;
The cap unit according to claim 1. The hinge is
a cap bearing provided on the cap body;
a ring bearing portion provided in the ring member and arranged adjacent to the cap bearing portion in the hinge axial direction;
a hinge shaft that supports the cap bearing portion and the ring bearing portion so as to be relatively rotatable about the hinge central axis;
The cap unit according to claim 1 or 2. The hinge is
a cap bearing provided on the cap body;
a lid bearing provided on the lid;
a ring bearing portion provided in the ring member and arranged side by side with the cap bearing portion and the lid bearing portion in the hinge axis direction;
a hinge shaft that supports the cap bearing portion, the lid bearing portion, and the ring bearing portion so as to be relatively rotatable around the hinge center axis;
The cap unit according to claim 2. The hinge is
a housing recess that is recessed in one of the cap bearing portion and the ring bearing portion, extends in the hinge axis direction, and accommodates the biasing portion;
an enclosing part enclosing the biasing part in the accommodation recess,
The cap unit according to claim 3. The hinge is
a housing recess that is recessed in one of the lid bearing portion and the ring bearing portion, extends in the hinge axis direction, and accommodates the biasing portion;
an enclosing part enclosing the biasing part in the accommodation recess,
The cap unit according to claim 4. The ring member can be stopped at any open position around the hinge center axis by the biasing by the biasing part.
The cap unit according to claim 1 or 2. One side in the hinge axis direction corresponds to the tight side in the circumferential direction where the cap unit and the container body are screwed together, and the other side in the hinge axis direction corresponds to the loose side in the circumferential direction.
The cap unit according to claim 1 or 2. a cap unit according to claim 1 or 2;
and the container body to which the cap unit is attached,
Beverage container.

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