JP7656514B2 - Cap unit and beverage container - Google Patents

Description

The present invention relates to a cap unit and a beverage container.

A conventional cap unit is known, for example, from the one described in Patent Document 1. The cap unit includes a cap body that closes the upper opening of the container body and has a liquid passage port that communicates the inside and outside of the container body, a lid that is rotatably connected to the cap body via a hinge and opens and closes the liquid passage port, and a locking means that fixes (locks) the lid in a closed position relative to the cap body. The hinge connects the rear end of the cap body to the rear end of the lid, and the locking means fixes the front end of the cap body to the front end of the lid. Also, in Patent Document 1, the lid is biased in an opening direction around the hinge by an elastic member that blocks the air hole.

Patent No. 3937428

When a beverage container equipped with this type of cap unit receives an impact from the hinge side (rear side) due to, for example, being dropped, the lid may be displaced forward. This displacement may cause the lid to be unintentionally released from the locked state of the locking means, causing the lid to open and the beverage to leak out of the container.

One of the objectives of the present invention is to provide a cap unit and a beverage container that can maintain the lid in a locked state even if it is subjected to an impact such as being dropped.

One aspect of the present invention is a cap unit that is attached to a container body that is open at the top, the cap unit comprising: a cap body that closes the top opening of the container body and has a liquid passage port that communicates between the inside and outside of the container body; a lid body that is arranged on the upper side of the cap body and covers the liquid passage port; a hinge that rotatably connects the lid body to the cap body; and a lid locking mechanism that fixes the lid body in a closed position relative to the cap body, the hinge being arranged at the rear of the cap unit and the lid locking mechanism being arranged at the front of the cap unit. has an engaged portion provided on the lid body and a locking portion provided on the cap body and engaged with the engaged portion from the front side, the cap body has an abutted portion, the lid body has an abutting portion that abuts against the abutted portion from the rear side when the lid body is displaced forward, the lid locking mechanism has a locking member on which the locking portion is disposed, and in a locked state in which the lid body is fixed in the closed position by the lid locking mechanism, the front-to-rear dimension between the abutted portion and the abutting portion is smaller than the front-to-rear clearance dimension between the locking member and the lid body.
Also, one aspect of the present invention is a cap unit to be attached to a container body having an open top, the cap unit comprising: a cap body that closes the top opening of the container body and has a liquid passage port that communicates between the inside and the outside of the container body; a lid body that is arranged on the upper side of the cap body and covers the liquid passage port; a hinge that rotatably connects the lid body to the cap body; and a lid lock mechanism that fixes the lid body in a closed position relative to the cap body, the hinge being arranged at the rear of the cap unit, the lid lock mechanism being arranged at the front of the cap unit, and the lid lock mechanism being arranged at the front of the cap unit. The locking mechanism has an engaged portion provided on the cap body and a locking portion provided on the lid body that engages with the engaged portion from the front side, the cap body has an abutted portion, and the lid body has an abutting portion that abuts against the abutted portion from the rear side when the lid body is displaced forward, the lid locking mechanism has a locking member on which the engaged portion is positioned, and in a locked state in which the lid body is fixed in the closed position by the lid locking mechanism, the front-to-rear dimension between the abutted portion and the abutting portion is smaller than the front-to-rear engagement dimension between the engaged portion and the locking portion.

In the above cap unit, it is preferable that the cap body has a first bearing portion extending along the hinge central axis of the hinge, the lid body has a second bearing portion arranged coaxially with the first bearing portion, the hinge has a hinge shaft that supports the first bearing portion and the second bearing portion so as to be rotatable around the hinge central axis, the cap body has an opposing wall portion that faces the second bearing portion from the front side, the abutted portion is the opposing wall portion, and the abutting portion is the second bearing portion.

In the above cap unit, it is preferable that the pair of the abutted portion and the abutting portion is provided on both sides in the left and right direction centered on the central axis of the cap unit.

In addition, one embodiment of the beverage container of the present invention comprises the above-mentioned cap unit and the container body to which the cap unit is attached.

According to one embodiment of the cap unit and beverage container of the present invention, the lid can be kept locked well even if it is subjected to an impact due to being dropped, etc.

FIG. 1 is a perspective view showing a beverage container according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view showing a beverage container. FIG. 3 is a cross-sectional view of a portion of the beverage container, showing the lid in a closed state (closed position). FIG. 4 is a perspective view of a portion of the beverage container with the lid in an open state (open position). FIG. 5 is a cross-sectional view showing the cap unit. More specifically, the cross-sectional position is different in the left-right direction from that in FIG. 3, and the watertight packing is omitted. FIG. 6 is a perspective view showing a portion of a beverage container according to a second embodiment of the present invention, with the lid in an open state. FIG. 7 is a cross-sectional perspective view showing a portion of the beverage container with the lid in a closed state. FIG. 8 is a perspective view showing a portion of a beverage container according to a third embodiment of the present invention, with the lid in an open state. FIG. 9 is a side view showing a portion of the beverage container with the lid in a closed state. FIG. 10 is a cross-sectional perspective view showing a modified example of the lid locking mechanism.

First Embodiment
A cap unit 1A according to a first embodiment of the present invention and a beverage container 100 including the cap unit 1A will be described with reference to Figures 1 to 5. In the following description, the cap unit 1A may be simply referred to as a cap, and the beverage container 100 may be simply referred to as a container.

1 and 2, a beverage container 100 of this embodiment includes a cap unit 1A and a cylindrical container body 2 with a bottom to which the cap unit 1A is detachably attached. The cap unit 1A includes a cylindrical cap body 10 having a top wall (ceiling wall), a cylindrical lid body 20 with a top, a first hinge 30 that rotatably connects the lid body 20 to the cap body 10, a biasing portion 60, a watertight packing 40 that seals the gap between the container body 2 and the cap body 10, and a lid locking mechanism 50.
The cap unit 1A and the container body 2 are arranged coaxially with each other about a central axis C.

In this embodiment, the direction in which the central axis C extends is referred to as the up-down direction. In the up-down direction, the direction from the bottom surface 2a of the container body 2 to the lid top wall 20a of the lid body 20 is referred to as the upper side, and the direction from the lid top wall 20a to the bottom surface 2a is referred to as the lower side.
A direction perpendicular to the central axis C is called a radial direction. Of the radial directions, a direction approaching the central axis C is called a radially inner direction or simply called an inner direction, and a direction away from the central axis C is called a radially outer direction or simply called an outer direction.
The direction going around the central axis C is called the circumferential direction.

Among the radial directions, a direction passing through the first hinge 30 and the central axis C is referred to as a front-rear direction. Among the front-rear directions, a direction from the first hinge 30 toward the central axis C is referred to as a front side, and a direction from the central axis C toward the first hinge 30 is referred to as a rear side.
In addition, the radial direction perpendicular to the front-rear direction is called the left-right direction. When the beverage container 100 is in an upright position with the lid top wall 20a of the lid body 20 facing vertically upward as shown in Fig. 2, the direction toward the left in the left-right direction is called the left side, and the direction toward the right is called the right side when viewed from the front. Although not shown, the position (state) of the beverage container 100 in which the lid top wall 20a of the lid body 20 faces vertically downward is called the inverted position.

The central axis C may be referred to as the cap central axis C or the container central axis C, to distinguish it from the nozzle central axis and hinge central axis A, which will be described later.

3 and 4, a hinge central axis A of the first hinge 30 extends in the left-right direction. The hinge central axis A is disposed rearward of the central axis C. The central axis C and the hinge central axis A are in skewed positions relative to each other.
A direction perpendicular to the hinge central axis A is called a hinge radial direction. In the hinge radial direction, a direction approaching the hinge central axis A is called an inner hinge radial direction, and a direction away from the hinge central axis A is called an outer hinge radial direction.
The direction going around the hinge central axis A is called the hinge circumferential direction.

As shown in FIG. 2, the beverage container 100 has a container body 2 with a vacuum insulation structure, which is capable of keeping the beverage (liquid contents, liquid) contained in the container body 2 hot or cold. The container body 2 is a cylindrical shape with an open top and a bottom. Note that the container body 2 may also contain contents other than beverages.

Specifically, the container body 2 has a cylindrical outer container 4 and an inner container 5 with a bottom, both made of, for example, stainless steel, and is configured as a double-structure container in which the mouths of the two containers are joined together while the inner container 5 is housed inside the outer container 4.

As shown in FIG. 3, the upper cylindrical end of the inner container 5 is fitted into the upper cylindrical end of the outer container 4, and the upper cylindrical ends are welded together in this fitted state. This gives the upper opening 2d of the container body 2 a pointed shape known as a "bow welded structure."

A vacuum insulation layer 6 is provided between the outer container 4 and the inner container 5. The vacuum insulation layer 6 can be formed, for example, by blocking a vent hole provided in the center of the bottom surface of the outer container 4 in a chamber that has been depressurized (evacuated) to a high vacuum.

As shown in Figures 1 and 2, the container body 2 has a substantially disk-shaped bottom surface portion 2a, a substantially cylindrical body portion 2b whose lower end is connected to the outer periphery of the bottom surface portion 2a, a substantially cylindrical mouth neck portion 2c that is located above the body portion 2b and has a smaller diameter than the body portion 2b, and a shoulder portion 2e that is substantially tapered and has a smaller diameter toward the top, connecting the upper end of the body portion 2b to the lower end of the mouth neck portion 2c.

As shown in FIG. 3, the inner circumference of the mouth-neck portion 2c is smaller in diameter than the inner circumference of the body portion 2b. A male thread portion 7 is provided on the outer circumference of the mouth-neck portion 2c. The upper end of the mouth-neck portion 2c opens in a circular shape as the upper opening portion 2d of the container body 2.

The beverage container 100 of this embodiment has an overall generally cylindrical external shape as shown in FIG. 1, but the external shape of the beverage container 100 is not particularly limited and can be modified as appropriate to suit the size, design, etc. In addition, the outer surfaces (surfaces) of the container body 2, cap body 10, and lid body 20 may be painted, printed, etc.

As shown in FIG. 3, the cap unit 1A is attached to the neck portion 2c of the container body 2 and forms a plug that closes the upper opening 2d of the container body 2.

The cap body 10 is a member that closes the upper opening 2d of the container body 2, and is made of a heat-resistant resin such as polypropylene (PP).
3 to 5, the cap body 10 has a top wall portion 10a, a peripheral wall portion 10b, a cylindrical portion 14, a first bearing portion 18, and an opposing wall portion (contact portion) 19. Note that Fig. 3 and Fig. 5 show a cross section (longitudinal cross section) parallel to the central axis C of the cap unit 1A, and in detail, Fig. 3 shows a vertical cross section perpendicular to the left-right direction and including the central axis C, while Fig. 5 shows a vertical cross section perpendicular to the left-right direction and at a different left-right position from Fig. 3 (a vertical cross section at a position shifted to the right from the central axis C).

The top wall portion 10a covers the upper opening 2d of the container body 2 from above. The top wall portion 10a is in the shape of a substantially circular ring plate. The top wall portion 10a has a nozzle portion 11 that protrudes upward from the top wall portion 10a. The nozzle portion 11 is in the shape of a cylinder that extends in the vertical direction, and its central nozzle axis (not shown) is located forward of the central axis C of the container.

The nozzle portion 11 has a liquid passage port 12 inside. In other words, the cap body 10 has a liquid passage port 12. The liquid passage port 12 penetrates the top wall portion 10a in the vertical direction to connect the inside and outside of the container body 2. In other words, the liquid passage port 12 extends in the vertical direction inside the nozzle portion 11 and opens at the upper and lower ends of the nozzle portion 11.

The top wall portion 10a also has an air vent 13 that penetrates the top wall portion 10a in the vertical direction and communicates between the inside and outside of the container body 2. In other words, the cap body 10 has an air vent 13. The air vent 13 is disposed between the nozzle portion 11 (liquid passage port 12) and the first hinge 30 in the front-rear direction. In this embodiment, the air vent 13 is a circular hole and is located rearward of the central axis C of the container.

When the lid body 20 is in the closed state shown in FIG. 3, the liquid passage hole 12 and the air vent hole 13 are covered by the lid body 20. When the lid body 20 is in the open state shown in FIG. 4, the liquid passage hole 12 and the air vent hole 13 are open toward the upper side.

As shown in FIG. 3, the peripheral wall portion 10b is tubular and extends downward from the outer periphery of the top wall portion 10a. The peripheral wall portion 10b surrounds the entire circumferential direction of the mouth neck portion 2c from the radially outer side. The lower end of the peripheral wall portion 10b faces the shoulder portion 2e from above with a gap therebetween or contacts it. The peripheral wall portion 10b is approximately cylindrical and extends vertically so as to be continuous with the trunk portion 2b of the container body 2.

The peripheral wall portion 10b has a female thread portion 15 on the inner peripheral surface of the peripheral wall portion 10b. The female thread portion 15 is screwed into the male thread portion 7 of the neck portion 2c. In other words, the cap body 10 is detachably attached by screwing to the outside of the neck portion 2c while covering the upper opening 2d of the container body 2.

The tubular portion 14 is cylindrical about the central axis C and extends downward from the top wall portion 10a. When viewed from below, the tubular portion 14 has an annular shape that surrounds the liquid passage port 12. Specifically, when viewed from below, the tubular portion 14 surrounds the liquid passage port 12 from the radial outside over the entire circumferential direction. The tubular portion 14 is inserted into the mouth neck portion 2c.

As shown in Figures 3 and 4, the first bearing portion 18 is disposed at the upper end and rear end of the cap body 10. Specifically, the first bearing portion 18 is disposed at the left-right center and rear end of the top wall portion 10a. The first bearing portion 18 protrudes upward and rearward from the top wall portion 10a. The first bearing portion 18 is substantially cylindrical and extends along the hinge center axis A of the first hinge 30.

The first bearing portion 18 has a bearing cylinder portion 18a and a connecting wall portion 18b.
The bearing tube portion 18a has a cylindrical shape centered on the hinge central axis A and extends in the left-right direction. The bearing tube portion 18a is a main body portion of the first bearing portion 18, and therefore may be referred to as the main body portion 18a.
The connecting wall portion 18b connects the bearing cylinder portion 18a and the top wall portion 10a. Specifically, the connecting wall portion 18b connects the lower portion of the outer circumferential surface of the bearing cylinder portion 18a and the rear end portion of the upper surface of the top wall portion 10a. Note that the connecting wall portion 18b is a root portion of the first bearing portion 18, and therefore may be referred to as the root portion 18b.

As shown in Figures 4 and 5, the opposing wall portion 19 is disposed at the upper end and rear end of the cap body 10. Specifically, the opposing wall portion 19 is disposed at the rear end of the top wall portion 10a, and is rib-shaped, protruding upward from the top wall portion 10a and extending in the left-right direction. The opposing wall portion 19 is disposed between the air vent 13 and the first hinge 30 in the front-rear direction. The opposing wall portion 19 is disposed alongside the connecting wall portion 18b of the first bearing portion 18 in the left-right direction.

The opposing wall portion 19 has a rear surface 19a facing the rear. In this embodiment, the rear surface 19a is an inclined surface that extends toward the rear as it approaches the lower side. Specifically, the rear surface 19a is a concave curved surface centered on the hinge central axis A. That is, in the vertical cross section shown in FIG. 5, the rear surface 19a is a concave arc centered on the hinge central axis A.

As shown in FIG. 4, in this embodiment, a pair of opposing walls 19 are provided spaced apart in the left-right direction. The left (one) opposing wall 19 of the pair of opposing walls 19 is disposed adjacent to the left side of the connecting wall 18b of the first bearing 18. The right (other) opposing wall 19 of the pair of opposing walls 19 is disposed adjacent to the right side of the connecting wall 18b of the first bearing 18.

In this embodiment, the opposing wall portion 19 and the connecting wall portion 18b of the first bearing portion 18 are connected to each other. Specifically, the left opposing wall portion 19 of the pair of opposing walls 19 has its right end portion connected to the left lower end portion of the connecting wall portion 18b of the first bearing portion 18. Also, the right opposing wall portion 19 of the pair of opposing walls 19 has its left end portion connected to the right lower end portion of the connecting wall portion 18b of the first bearing portion 18.

3, the lid body 20 is disposed on the upper side of the cap body 10. The lid body 20 is a member that covers the upper part of the cap body 10 and also covers the liquid passage port 12 and the air vent hole 13 in an openable and closable manner. The lid body 20 has a portion made of a heat-resistant resin such as polypropylene (PP) (for example, portions other than a liquid passage sealing portion 21, an air passage sealing portion 22, and a cover member 24, which will be described later).
As shown in Figures 3 to 5, the lid body 20 has a lid top wall portion 20a, a lid peripheral wall portion 20b, a liquid passage seal portion 21, an air passage seal portion 22, a second bearing portion (abutment portion) 23, and a cover member 24.

The lid top wall portion 20a is disposed above the top wall portion 10a of the cap body 10. In this embodiment, the lid top wall portion 20a is a plate extending in the front-rear direction and inclines upward as it moves forward from the first hinge 30.

As shown in FIG. 3, the lid top wall portion 20a has a hole portion 20c that penetrates the lid top wall portion 20a in the up-down direction, and a support tube 20d that protrudes downward from the lid top wall portion 20a and is positioned between the hole portion 20c and the first hinge 30 in the front-rear direction.

The lid peripheral wall portion 20b is cylindrical and extends downward from the outer periphery of the lid top wall portion 20a. The lid peripheral wall portion 20b is arranged so as to surround the periphery of the top wall portion 10a of the cap body 10.

The liquid passage sealing portion 21 is made of an elastic material such as heat-resistant rubber or elastomer, for example silicone rubber. That is, the liquid passage sealing portion 21 is elastically deformable. The liquid passage sealing portion 21 is detachably attached to the lid top wall portion 20a of the lid body 20. When the lid body 20 is in the closed state, the liquid passage sealing portion 21 is in liquid-tight contact with the upper opening of the nozzle portion 11. In this way, the liquid passage sealing portion 21 releasably blocks the liquid passage port 12 from above. The liquid passage sealing portion 21 is a plug-shaped sealing member that blocks the liquid passage port 12 of the nozzle portion 11.

The liquid-passing seal 21 has an axis 21a that fits into the hole 20c, and a plug 21b that is connected to the lower end of the axis 21a and has a generally dome-like shape that protrudes downward. The liquid-passing seal 21 is detachable from the hole 20c. Therefore, the lid 20 and the liquid-passing seal 21 can be washed separately, and the space between the lid 20 and the liquid-passing seal 21 can be kept hygienic.

In this cap unit 1A, when the lid body 20 is in the closed position shown in FIG. 3, the plug portion 21b of the liquid passage sealing portion 21 abuts against the upper end opening edge of the nozzle portion 11, i.e., the periphery of the opening of the liquid passage port 12, and this plug portion 21b elastically deforms and comes into close contact with the periphery of the opening of the liquid passage port 12. This makes it possible to close the liquid passage port 12 of the nozzle portion 11 with the liquid passage sealing portion 21.

The ventilation seal 22 is made of an elastic material such as heat-resistant rubber or elastomer, for example silicone rubber. That is, the ventilation seal 22 is elastically deformable. The ventilation seal 22 is detachably attached to the lid top wall 20a of the lid 20. When the lid 20 is in the closed state, the ventilation seal 22 is in liquid-tight contact with the upper opening of the ventilation hole 13. As a result, the ventilation seal 22 releasably closes the ventilation hole 13 from above. The ventilation seal 22 is a bottomed cylindrical seal member that closes the ventilation hole 13.

The ventilation seal 22 is fitted onto the support tube 20d. The ventilation seal 22 is detachable from the support tube 20d. Therefore, the lid 20 and the ventilation seal 22 can be washed separately, and the space between the lid 20 and the ventilation seal 22 can be kept hygienic.

In this cap unit 1A, when the lid body 20 is in the closed position, the bottom of the ventilation seal 22 comes into contact with the periphery of the opening of the ventilation hole 13, and while this bottom elastically deforms, it comes into close contact with the periphery of the opening of the ventilation hole 13. This makes it possible to close the ventilation hole 13 with the ventilation seal 22.

In this embodiment, the liquid passage sealing portion 21 and the air passage sealing portion 22 are integrally formed from a single member. This reduces the number of parts and prevents parts from being lost during cleaning, etc.

As shown in FIG. 5, the second bearing portion 23 is disposed at the rear end of the lid body 20. Specifically, the second bearing portion 23 is disposed at the rear end of the lid top wall portion 20a and the rear end of the lid peripheral wall portion 20b, protruding downward from the lid top wall portion 20a and protruding radially inward from the lid peripheral wall portion 20b.

As shown in FIG. 4, the second bearing portion 23 is substantially cylindrical and extends along the hinge center axis A of the first hinge 30, and is arranged coaxially with the bearing tube portion 18a of the first bearing portion 18. The second bearing portion 23 is arranged side by side with the bearing tube portion 18a of the first bearing portion 18 in the left-right direction.

In this embodiment, a pair of second bearing portions 23 are provided spaced apart in the left-right direction. The left (one) second bearing portion 23 of the pair of second bearing portions 23 is disposed adjacent to the left side of the bearing tube portion 18a of the first bearing portion 18. The right (other) second bearing portion 23 of the pair of second bearing portions 23 is disposed adjacent to the right side of the bearing tube portion 18a of the first bearing portion 18.

5, the second bearing portion 23 faces the opposing wall portion 19 from the rear side. In other words, the opposing wall portion 19 faces the second bearing portion 23 from the front side. In this embodiment, a gap of dimension L1 in the front-rear direction is provided between the opposing wall portion 19 and the second bearing portion 23. More specifically, a gap of dimension L1 in the hinge radial direction, which is constant along the hinge circumferential direction, is provided between the rear surface 19a of the opposing wall portion 19 and the outer circumferential surface of the second bearing portion 23.
When the cover 20 is displaced forward due to an impact such as being dropped, the second bearing portion 23 comes into contact with the opposing wall portion 19 from the rear side.

As shown in FIG. 4, the left (one) of the pair of opposing walls 19 faces the left (one) of the pair of second bearings 23 from the front. The right (other) of the pair of opposing walls 19 faces the right (other) of the pair of second bearings 23 from the front. That is, in this embodiment, pairs of opposing walls (abutted parts) 19 and second bearings (abutting parts) 23 are provided on both sides in the left-right direction centered on the central axis C of the cap unit 1A.

The cover member 24 is a generally cylindrical or annular plate-shaped member centered on the hinge central axis A (see FIG. 7). The cover member 24 is disposed adjacent to one of the pair of second bearing portions 23 in the left-right direction. The cover member 24 can be preferably made of a material different from that of the second bearing portion 23, such as polyacetal (POM) or acrylonitrile butadiene styrene (ABS), which has better wear resistance than the second bearing portion 23.

As shown in FIG. 4, in this embodiment, the cover member 24 is provided between the right (other) of the pair of second bearing portions 23 and the bearing tube portion 18a of the first bearing portion 18. The cover member 24 and the other second bearing portion 23 are engaged with each other in a state in which relative movement in the hinge circumferential direction is restricted. In addition, the cover member 24 and the bearing tube portion 18a are freely rotatable in the hinge circumferential direction, and specifically, are in contact with each other so as to be freely slidable.

As shown in FIG. 3, the first hinge 30 is disposed at the rear of the cap unit 1A. The first hinge 30 connects the upper rear end of the cap body 10 and the rear end of the lid body 20 so that they can rotate relative to each other in the hinge circumferential direction. The lid body 20 is connected to the cap body 10 via the first hinge 30, and can rotate freely between a position (closed position) in which the liquid passage hole 12 and the air hole 13 shown in FIG. 3 are closed, and a position (open position) in which the liquid passage hole 12 and the air hole 13 are opened, as shown in FIG. 4.

The first hinge 30 has a hinge shaft 31 that supports the first bearing portion 18 and the second bearing portion 23 so that they can rotate freely around the hinge center axis A. The hinge shaft 31 is axially shaped extending in the left-right direction, and is inserted through the bearing tube portion 18a of the first bearing portion 18, the pair of second bearing portions 23, the cover member 24, and the biasing portion 60 (see FIG. 7). The hinge shaft 31 is, for example, a stainless steel shaft or pipe.

The biasing portion 60 biases the lid body 20 in the opening direction around the first hinge 30 (i.e., in the hinge circumferential direction) relative to the cap body 10 (see FIG. 7). In this embodiment, the biasing portion 60 is provided in the first hinge 30. The biasing portion 60 is a torsion coil spring that extends in a spiral shape around the hinge central axis A. In this embodiment, the biasing portion 60 is disposed in the inside of the bearing tube portion 18a of the first bearing portion 18 and the inside of the cover member 24, and biases the other second bearing portion 23 in the opening direction in the hinge circumferential direction relative to the first bearing portion 18 via the cover member 24, thereby biasing the lid body 20 in the opening direction. When the locked state by the lid lock mechanism 50 is released, this biasing force causes the lid body 20 to rotate around the first hinge 30 from the closed position to the open position.

As shown in Fig. 3, the watertight gasket 40 is detachably attached to the inside of the cap body 10. The watertight gasket 40 is a ring-shaped sealing member that seals (stops water) between the container body 2 and the cap body 10, and is made of an elastic member such as a heat-resistant rubber, elastomer, for example, silicone rubber. That is, the watertight gasket 40 is elastically deformable. Specifically, the watertight gasket 40 of this embodiment liquid-tightly seals the gap between the upper opening 2d of the container body 2 and the top wall portion 10a of the cap body 10.
In FIG. 3, a part of the watertight packing 40 is shown by a two-dot chain line (phantom line) to show the shape before elastic deformation.

The watertight gasket 40 is attached to the cap body 10 in a state where it is fitted onto the tubular portion 14. The watertight gasket 40 can also be removed from the tubular portion 14. This allows the cap body 10 and the watertight gasket 40 to be washed separately, and the space between the cap body 10 and the watertight gasket 40 can be kept hygienic.

The watertight gasket 40 has a cylindrical gasket peripheral wall 41 that fits around the tubular portion 14, an annular seal flange 42 that extends radially outward from the gasket peripheral wall 41 and seals between the upper opening 2d of the container body 2 and the top wall portion 10a of the cap body 10, and an extending flange portion 43 that extends radially inward from the lower end of the gasket peripheral wall 41.

The packing peripheral wall 41 extends in the vertical direction around the central axis C and fits onto the outside of the tubular portion 14. The inner peripheral surface of the packing peripheral wall 41 contacts the outer peripheral surface of the tubular portion 14. The lower end of the packing peripheral wall 41 protrudes downward beyond the lower end of the tubular portion 14.

The seal flange 42 has a generally annular plate shape centered on the central axis C. The seal flange 42 protrudes radially outward from an upper end of the packing peripheral wall 41 and extends in the circumferential direction.
3, in this embodiment, the seal flange 42 has a groove portion 42a recessed radially inward from the outer circumferential surface of the seal flange 42 and extending circumferentially, and a pair of flange portions 42b disposed above and below the groove portion 42a. Therefore, the cross-sectional shape (longitudinal cross-sectional shape) of the seal flange 42 parallel to the central axis C is generally C-shaped or generally U-shaped opening radially outward.

Of the pair of flange portions 42b, the upper surface of the upper flange portion contacts the lower surface of the top wall portion 10a. In other words, the upper surface of the seal flange 42 contacts the lower surface of the top wall portion 10a. The thickness (plate thickness) of one of the pair of flange portions 42b is thinner than the thickness of the packing peripheral wall 41. The pair of flange portions 42b are particularly susceptible to elastic deformation among the watertight packing 40, and are designed to easily come into close contact with the upper opening 2d and the top wall portion 10a, respectively, thereby providing a stable seal between them.

The extending flange 43 is an annular plate centered on the central axis C. The extending flange 43 protrudes radially inward from the lower end of the packing peripheral wall 41 and extends circumferentially. The extending flange 43 is disposed directly below the peripheral wall of the tubular portion 14. A gap is provided between the upper surface of the extending flange 43 and the lower end surface of the tubular portion 14 in the vertical direction. This prevents the extending flange 43 from hitting the lower end surface of the tubular portion 14 due to, for example, manufacturing errors in the components when assembling the watertight packing 40, and prevents problems such as unstable adhesion between the seal flange 42 and the top wall portion 10a.

As shown in Figures 1, 3, and 4, the lid locking mechanism 50 is disposed at the front of the cap unit 1A. The lid locking mechanism 50 fixes the lid 20 to the cap body 10 in the above-mentioned closed position (closed state) against the rotational biasing force in the opening direction about the first hinge 30 (hinge central axis A). The lid locking mechanism 50 fixes the front end of the cap body 10 to the front end of the lid 20. Note that Figures 1 and 3 show a state in which the lid 20 is fixed in the closed position by the lid locking mechanism 50 (locked state), and Figure 4 shows a state in which the fixation of the lid 20 by the lid locking mechanism 50 is released (unlocked state).

The lid locking mechanism 50 has a second hinge 55 whose hinge central axis (not shown) extends in the left-right direction, a locking member 52 that is rotatable around the hinge central axis of the second hinge 55, and a ring stopper (locking portion) 54 that is rotatable around the hinge central axis of the second hinge 55. The second hinge 55 also has an inner hinge portion 51 and outer hinge portions 53 that are located on both outer sides of the inner hinge portion 51 in the left-right direction. The inner hinge portion 51 and the outer hinge portion 53 are arranged coaxially with each other, with the hinge central axis of the second hinge 55 as a common axis.

The locking member 52 is attached to the cap body 10 so as to be freely rotatable (swingable) via the inner hinge portion 51. The ring stopper 54 is attached to the cap body 10 so as to be freely rotatable via the outer hinge portion 53. That is, the locking member 52 and the ring stopper 54 are each provided on the cap body 10.

The inner hinge portion 51 is provided on the front surface of the peripheral wall portion 10b of the cap body 10. The inner hinge portion 51 is disposed inside the outer hinge portion 53 in the left-right direction (i.e., on the central axis C side). The locking member 52 is supported by the inner hinge portion 51 so as to be rotatable in the front-rear direction. The locking member 52 has an upper arm portion 52a extending upward from the hinge central axis of the second hinge 55, and a lower arm portion 52b extending downward from the hinge central axis of the second hinge 55. A hook portion (locking portion) 56 is provided at the tip portion (upper end portion of the locking member 52) of the upper arm portion 52a so as to protrude toward the rear side. That is, the hook portion 56 is disposed on the locking member 52, and the hook portion 56 is provided on the cap body 10 via the locking member 52 and the inner hinge portion 51. A compression coil spring 57 is provided between the lower arm portion 52b and the peripheral wall portion 10b in a state compressed in the front-rear direction.

The outer hinge portion 53 is provided on the front surface of the peripheral wall portion 10b of the cap body 10. The ring stopper 54 is made of a curved, roughly C-shaped member, and both ends of the ring stopper 54 are supported by the outer hinge portion 53 so that it can rotate freely in the vertical direction.

The lid lock mechanism 50 also has a lock receiving portion (engaged portion) 58 to which the hook portion 56 of the locking member 52 is engaged, and a stopper receiving portion (engaged portion) 59 to which the ring stopper 54 is hooked. The lock receiving portion 58 is a claw-like portion that protrudes forward from the lower end portion on the front side of the lid body 20. The stopper receiving portion 59 is a roughly semicircular ring-shaped portion that fits the shape of the inner periphery of the ring stopper 54, and protrudes forward from a position on the front surface of the lid body 20 that surrounds the periphery of the lock receiving portion 58. That is, the lock receiving portion 58 and the stopper receiving portion 59 are each provided on the lid body 20.

More specifically, the lid lock mechanism 50 has a lock receiving portion (engaged portion) 58 provided on one of the cap body 10 and the lid body 20 (the lid body 20 in this embodiment), and a hook portion (engaging portion) 56 provided on the other of the cap body 10 and the lid body 20 (the cap body 10 in this embodiment) that engages with the lock receiving portion 58 from the front side. In addition, the lower surface of the hook portion 56 is engaged with the upper surface of the lock receiving portion 58 so as to be movable in the front-rear direction.

The lid lock mechanism 50 has a stopper receiving portion (engaged portion) 59 provided on one of the cap body 10 and the lid body 20 (the lid body 20 in this embodiment), and a ring stopper (engaging portion) 54 provided on the other of the cap body 10 and the lid body 20 (the cap body 10 in this embodiment) that engages with the stopper receiving portion 59 from the front side. The inner peripheral portion of the ring stopper 54 is engaged with the outer peripheral portion of the stopper receiving portion 59 so as to be movable in the front-rear direction.

3 and 5, in the locked state in which the lid 20 is fixed in the closed position by the lid lock mechanism 50, the dimension L1 in the front-rear direction between the opposing wall portion (contacted portion) 19 and the second bearing portion (contact portion) 23 is smaller than the clearance dimension L2 in the front-rear direction between the locking member 52 and the lid 20. Specifically, in this embodiment, the clearance dimension L2 refers to the dimension L2 of the gap in the front-rear direction (so-called "play dimension") provided between the rear surface of the portion of the upper arm portion 52a of the locking member 52 other than the hook portion 56 and the front end of the lock receiving portion 58.

When the lid 20 is in the closed position, the hook portion 56 of the locking member 52 engages with the lock receiving portion 58, and the lid 20 is fixed to the cap body 10 against the rotational bias of the first hinge 30 in the opening direction.

From this state, the user compresses the compression coil spring 57 while pushing the lower arm portion 52b of the locking member 52 rearward, thereby releasing the hook portion 56 from the lock receiving portion 58. This allows the lid body 20, which is biased in the opening direction, to be rotated to the open position.

In addition, in the lid lock mechanism 50, when the lid 20 is in the closed position, the ring stopper 54 is latched (engaged) with the stopper receiving portion 59, thereby preventing the lid 20 from rotating in the opening direction. This makes it possible for the lid lock mechanism 50 to prevent the lid 20 from being opened by unnecessary (unintended) operation of the lock member 52, etc.

In the cap unit 1A and beverage container 100 of this embodiment described above, when an impact is received from the first hinge 30 side (rear side) due to, for example, being dropped, the lid body 20 is displaced forward and the second bearing portion (contact portion) 23 of the lid body 20 abuts against the opposing wall portion (contacted portion) 19 of the cap body 10. The abutment between the abutment portion 23 and the contacted portion 19 absorbs the impact and prevents the lid body 20 from displacing further forward. Because the amount of forward displacement of the lid body 20 can be kept small, the locked state of the lid body 20 by the lid locking mechanism 50 can be prevented from being unintentionally released.

More specifically, since the amount of forward displacement of the lid 20 is kept small, the locked state between the lock receiving portion 58 and the hook portion 56 is well maintained. Also, the locked state between the stopper receiving portion 59 and the ring stopper 54 is well maintained.
As described above, according to this embodiment, even if the container is subjected to an impact due to being dropped or the like, the locked state of the lid 20 can be well maintained, and the beverage can be prevented from leaking out of the container.

In addition, in this embodiment, when the lid body 20 is in the locked state, the dimension L1 in the front-rear direction between the abutted portion 19 and the abutting portion 23 is smaller than the clearance dimension L2 in the front-rear direction between the locking member 52 and the lid body 20, that is, the so-called "play dimension" L2. Therefore, when the lid body 20 is displaced forward due to an impact such as a fall, the abutted portion 19 and the abutting portion 23 come into contact with each other first, and the lid body 20 is prevented from displacing forward beyond the play dimension L2 and abutting against the locking member 52. Since the engagement state between the hook portion 56 of the locking member 52 and the lock receiving portion 58 of the lid body 20 is well maintained, the locked state of the lid body 20 can be more stably prevented from being unintentionally released.

Although not specifically shown, when a clearance dimension (play dimension) in the front-to-rear direction is provided between the ring stopper 54 and the lid peripheral wall portion 20b when the lid body 20 is in the locked state, the front-to-rear direction dimension L1 between the opposing wall portion (contacted portion) 19 and the second bearing portion (contact portion) 23 can be made smaller than this clearance dimension, so that the engagement state between the stopper receiving portion 59 and the ring stopper 54 can be maintained satisfactorily, as described above.

In addition, in this embodiment, since the opposing wall portion 19 faces the second bearing portion 23 from the front side, even if an impact is received from the first hinge 30 side (rear side) when the lid body 20 is in the open position, the impact can be received by the abutment between the opposing wall portion 19 and the second bearing portion 23. This increases the strength of the cap unit 1A near the first hinge 30, and prevents damage to the first hinge 30, etc., due to being dropped, etc.

In this embodiment, the opposing wall portion 19 and the connecting wall portion 18b of the first bearing portion 18 are connected to each other.
In this case, the strength of the first bearing portion 18 is increased by the opposing wall portion 19, which further suppresses damage to the first hinge 30, etc. Also, the improvement in the rigidity of the first bearing portion 18 reduces the amount of forward displacement of the cover body 20, which results in the above-described effect of the present embodiment being more stably achieved.

In this embodiment, in the vertical cross-sectional view shown in Figure 5, the rear surface 19a of the opposing wall portion 19 is a concave arc centered on the hinge central axis A, that is, the rear surface 19a is a concave curved surface that extends in the circumferential direction of the hinge.
In this case, the effect of receiving the second bearing portion 23 by the opposing wall portion 19 becomes more stable.

In this embodiment, a pair of the opposing wall portion (contact portion) 19 and the second bearing portion (contact portion) 23 is provided on both sides in the left and right direction centered on the central axis C of the cap unit 1A.
In this case, not only is the amount of displacement of the lid body 20 toward the front kept small, but also the amount of displacement of the lid body 20 when viewed from above so as to rotate (twist left and right) around the first hinge 30 can be kept small because the shock can be received by the abutment of the pair of the opposing wall portion (abutted portion) 19 on either the left or right side and the second bearing portion (abutting portion) 23. Therefore, the above-described effect of this embodiment becomes more remarkable, and damage to the first hinge 30, etc. due to the torsional displacement (deformation) of the lid body 20 can be suppressed.

Second Embodiment
Next, a cap unit 1B according to a second embodiment of the present invention and a beverage container 100 including the cap unit 1B will be described with reference to Fig. 6 and Fig. 7. In this embodiment, the same components as those in the above-mentioned embodiment are given the same names and symbols, and the description thereof will be omitted.

Figure 6 shows the open state where the lid 20 is in the open position, and Figure 7 shows the closed state where the lid 20 is in the closed position. Note that Figure 7 is a cross-sectional perspective view including a cross section perpendicular to the central axis C (not shown).

As shown in Figures 6 and 7, in this embodiment, the cap body 10 has a first wall portion (contact portion) 70 facing the rear side. The first wall portion 70 is a wall portion provided on the top wall portion 10a, and protrudes upward and extends in the left-right direction. In this embodiment, the first wall portion 70 is disposed between the nozzle portion 11 (liquid passage port 12) and the air vent 13 in the front-rear direction.

The lid body 20 also has a second wall portion (contact portion) 71 that contacts the first wall portion 70 from the rear side when the lid body 20 is displaced forward due to an impact such as a fall. The second wall portion 71 is rib-shaped and protrudes inward from the inner peripheral surface of the lid peripheral wall portion 20b and extends in the vertical direction. In the illustrated example, the amount by which the second wall portion 71 protrudes inward from the inner peripheral surface of the lid peripheral wall portion 20b increases toward the lower side (the cap body 10 side). In addition, the second wall portion 71 may face the first wall portion 70 with a gap in between when the lid body 20 is in the closed position (closed state), or may contact the first wall portion 70 if the dimensions can be controlled with high precision.

Specifically, as shown in FIG. 7, in a locked state in which the lid body 20 is fixed in the closed position by the lid locking mechanism 50, the dimension L1 in the front-rear direction between the first wall portion (contact portion) 70 and the second wall portion (contact portion) 71 is smaller than the above-mentioned clearance dimension L2 (see FIG. 3).

Furthermore, the pair of mutually opposing first wall portion 70 and second wall portion 71 is provided on both sides in the left-right direction centered on the central axis C of this cap unit 1B.

According to the cap unit 1B and beverage container 100 of this embodiment described above, the same effects as those of the above-mentioned embodiment can be obtained.
In addition, in this embodiment, the contact position between the first wall portion (contact portion) 70 and the second wall portion (contact portion) 71 can be disposed forward of the contact position between the opposing wall portion (contact portion) 19 and the second bearing portion (contact portion) 23 in the first embodiment. In other words, since the contact position can be disposed closer to the lid locking mechanism 50, it is possible to more stably prevent the locked state of the lid body 20 by the lid locking mechanism 50 from being unintentionally released.

Third Embodiment
Next, a cap unit 1C according to a third embodiment of the present invention and a beverage container 100 including the cap unit 1C will be described with reference to Fig. 8 and Fig. 9. In this embodiment, the same components as those in the above-described embodiment are given the same names and symbols, and the description thereof will be omitted.

Figure 8 shows the open state where the lid body 20 is in the open position, and Figure 9 shows the closed state where the lid body 20 is in the closed position.

As shown in Figures 8 and 9, in this embodiment, the cap body 10 has a rib portion (contact portion) 72 that protrudes upward from the top wall portion 10a and extends in the left-right direction. In the illustrated example, the rib portion 72 is arranged side by side with the nozzle portion 11 (fluid passage port 12) in the left-right direction.

The lid body 20 also has a groove portion (contact portion) 73 that engages with the rib portion 72 when the lid body 20 is in the closed position (closed state). The groove portion 73 is recessed upward from the lower end surface of the lid peripheral wall portion 20b and extends in the left-right direction. The groove portion 73 penetrates the lid peripheral wall portion 20b in the left-right direction and opens to the outer peripheral surface and inner peripheral surface of the lid peripheral wall portion 20b.

When the lid 20 is displaced forward due to an impact such as a fall, the groove 73 comes into contact with the rib 72 from the rear. When the lid 20 is in the closed position (closed state), the groove 73 may face the rib 72 with a gap, or may come into contact (fit) with the rib 72 if the dimensions can be controlled with high precision.

Specifically, as shown in FIG. 9, in a locked state in which the lid 20 is fixed in the closed position by the lid locking mechanism 50, the dimension L1 in the front-to-rear direction between the rib portion (contact portion) 72 and the groove portion (contact portion) 73 is smaller than the above-mentioned clearance dimension L2 (see FIG. 3).

Furthermore, pairs of opposing rib portions 72 and groove portions 73 are provided on both sides in the left-right direction centered on the central axis C (not shown) of this cap unit 1C.

According to the cap unit 1C and beverage container 100 of this embodiment described above, the same effects as those of the above-mentioned embodiment can be obtained.
In addition, in this embodiment, the contact position between the rib portion (contact portion) 72 and the groove portion (contact portion) 73 can be disposed forward of the contact position between the opposing wall portion (contact portion) 19 and the second bearing portion (contact portion) 23 in the first embodiment. In other words, since the contact position can be disposed closer to the lid locking mechanism 50, it is possible to more stably prevent the locked state of the lid body 20 by the lid locking mechanism 50 from being unintentionally released.
Although not specifically shown, as a modified example of this embodiment, the cap body 10 may have a groove portion (abutment portion), the lid body 20 may have a rib portion (abutment portion), and when the lid body 20 is displaced forward, the rib portion may abut against the groove portion from the rear side.

The present invention is not limited to the above-described embodiment, and the configuration may be modified without departing from the spirit of the present invention, for example as described below.

In the above embodiment, an example was given in which the biasing portion 60 that biases the cover body 20 in the opening direction about the first hinge 30 is a torsion coil spring disposed inside the first hinge 30, but this is not limited to this.
The biasing portion may be, for example, the ventilation sealing portion 22. In this case, when the lid body 20 is in the closed state, the ventilation sealing portion 22 is elastically deformed by its lower end portion being pressed against the top wall portion 10a, and biases the lid body 20 in the opening direction around the first hinge 30 by the restoring deformation force.
Although not specifically shown, the biasing portion may be composed of a ring-shaped elastic member hooked between the first hinge 30 and the lid top wall portion 20a, and may bias the lid body 20 in the opening direction around the first hinge 30.

In the above embodiment, an example has been given in which the locking member 52 of the lid locking mechanism 50 is rotatable about the second hinge 55, but the present invention is not limited to this.
10 shows a modified example of the lid locking mechanism 50. In this modified example, the lid locking mechanism 50 has a locking member 81 that is slidable in the front-rear direction, and an elastically deformable elastic member 82 that biases the locking member 81 forward. The locking member 81 and the elastic member 82 are provided on the cap body 10. The elastic member 82 is elastically deformable in the front-rear direction, and is made of, for example, rubber, elastomer, a compression coil spring, or the like.

Further, the locking member 81 has an upper end provided with a first claw portion (engaged portion) 83 that protrudes forward.
A second claw portion (locking portion) 84 protruding toward the rear is provided at the front lower end of the lid peripheral wall portion 20b of the lid body 20. The second claw portion (locking portion) 84 is locked to the first claw portion (locked portion) 83 from the front side.

More specifically, the lid locking mechanism 50 has a first claw portion (engaged portion) 83 of a locking member 81 provided on one of the cap body 10 and the lid body 20 (cap body 10 in this modified example), and a second claw portion (engaging portion) 84 provided on the other of the cap body 10 and the lid body 20 (lid body 20 in this modified example) and engaged with the first claw portion 83 from the front side.
Even when the modified cover lock mechanism 50 shown in FIG. 10 is employed, the same effects as those of the above-described embodiment can be obtained.

10, in the locked state in which the lid 20 is fixed in the closed position by the lid lock mechanism 50, it is preferable that the dimension L1 in the front-rear direction between the abutted portion (e.g., the opposing wall portion 19 in the first embodiment) and the abutting portion (e.g., the second bearing portion 23 in the first embodiment) is smaller than the locking dimension in the front-rear direction between the first claw portion (locked portion) 83 and the second claw portion (locking portion) 84. The locking dimension is the dimension in the front-rear direction of the locking portion where the lower surface of the first claw portion 83 and the upper surface of the second claw portion 84 come into contact with each other, and may be referred to as the engagement allowance.
In this case, when the lid body 20 is displaced forward due to an impact from being dropped or the like, the abutted portion 19 first comes into contact with the abutting portion 23, thereby preventing the lid body 20 from being displaced forward beyond the above-mentioned locking dimension. This maintains the locked state between the first claw portion 83 of the locking member 81 and the second claw portion 84 of the lid body 20, so that the locked state of the lid body 20 can be more stably prevented from being unintentionally released.

In the above embodiment, an example was given in which the present invention was applied to a beverage container 100 that has a heat retention/cold retention function due to a container body 2 with a vacuum insulation structure, but the present invention is not limited to this. In other words, the present invention can be widely applied to capped containers in which a cap unit closes the upper opening of the container body.

The present invention may be implemented by combining the various configurations described in the above-mentioned embodiments and modifications, etc., without departing from the spirit of the present invention, and addition, omission, substitution, and other modifications of configurations are possible. Furthermore, the present invention is not limited to the above-mentioned embodiments, etc., but is limited only by the scope of the claims.

1A, 1B, 1C...cap unit, 2...container body, 2d...upper opening, 10...cap body, 12...fluid passage port, 18...first bearing portion, 19...opposing wall portion (contact portion), 20...lid body, 23...second bearing portion (contact portion), 30...first hinge (hinge), 31...hinge shaft, 50...lid lock mechanism, 52, 81...locking member, 54...ring stopper (locking portion), 56...hook portion (locking stopper portion), 58...lock receiving portion (engaged portion), 59...stopper receiving portion (engaged portion), 60...biasing portion, 70...first wall portion (contact portion), 71...second wall portion (contact portion), 72...rib portion (contact portion), 73...groove portion (contact portion), 83...first claw portion (engaged portion), 84...second claw portion (engaged portion), 100...beverage container, A...hinge central axis, C...central axis, L1...dimension, L2...clearance dimension

Claims (5)

A cap unit to be attached to a container body having an open top,
a cap body that closes an upper opening of the container body and has a liquid passage hole that communicates between the inside and the outside of the container body;
a lid body disposed on an upper side of the cap body and covering the liquid passage hole;
a hinge that rotatably connects the lid body to the cap body;
a lid lock mechanism that fixes the lid body in a closed position relative to the cap body,
The hinge is disposed at the rear of the cap unit,
The lid lock mechanism is disposed at the front of the cap unit,
The lid lock mechanism is
A latched portion provided on the lid ;
a locking portion provided on the cap body and locked to the locked portion from a front side,
The cap body has a contact portion,
the lid body has an abutting portion that abuts against the abutted portion from a rear side when the lid body is displaced forward,
the lid lock mechanism has a lock member in which the engaging portion is disposed,
in a locked state in which the lid is fixed at the closed position by the lid lock mechanism, a dimension in the front-rear direction between the abutted portion and the abutting portion is smaller than a clearance dimension in the front-rear direction between the locking member and the lid;
Cap unit. A cap unit to be attached to a container body having an open top,
a cap body that closes an upper opening of the container body and has a liquid passage hole that communicates between the inside and the outside of the container body;
a lid body disposed on an upper side of the cap body and covering the liquid passage hole;
a hinge that rotatably connects the lid body to the cap body;
a lid lock mechanism that fixes the lid body in a closed position relative to the cap body,
The hinge is disposed at the rear of the cap unit,
The lid lock mechanism is disposed at the front of the cap unit,
The lid lock mechanism is
A locked portion provided on the cap body;
a locking portion provided on the lid and locked to the locked portion from the front side,
The cap body has a contact portion,
the lid body has an abutting portion that abuts against the abutted portion from a rear side when the lid body is displaced forward,
the lid locking mechanism has a locking member on which the engaged portion is disposed,
In a locked state in which the lid body is fixed at the closed position by the lid lock mechanism, a dimension in the front-rear direction between the abutted portion and the abutting portion is smaller than a locking dimension in the front-rear direction between the engaged portion and the engaging portion.
Cap unit. The cap body has a first bearing portion extending along a hinge central axis of the hinge,
the cover body has a second bearing portion arranged coaxially with the first bearing portion,
the hinge has a hinge shaft that pivotally supports the first bearing portion and the second bearing portion so as to be rotatable about the hinge central shaft,
the cap body has an opposing wall portion that faces the second bearing portion from a front side,
the abutted portion is the opposing wall portion,
The abutment portion is the second bearing portion.
The cap unit according to claim 1 or 2 . a pair of the abutted portion and the abutting portion is provided on both sides in the left-right direction about a central axis of the cap unit,
The cap unit according to claim 1 . A cap unit according to any one of claims 1 to 4 ,
The container body to which the cap unit is attached.
Beverage containers.

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