Cap unit and container with cap

Abstract

The present application provides a cover unit, which has a cover locking mechanism with high functionality and excellent design. The cover unit has a cover locking mechanism (36) that fixes a cover body (9) in a position to close a liquid passage (13) against the force of a first force applying member (26), the cover locking mechanism (36) having: a locking member (38) rotatably mounted to a cover main body (7) via a second hinge portion (37), and rotating between a locked position in which a locking portion (44) provided on one end side and a locking portion (45) provided on the other side of the cover body (9) are locked, and a locked release position in which the locking state of the one locking portion (44) and the other locking portion (45) is released; and a cover member (49) covering the locking member (38).

Description

TECHNICAL FIELD

[0001] The present application relates to a lid unit and a container with a lid. BACKGROUND

[0002] In the past, there has been a lid unit (a plug) that is detachably attached to a container body having an upper opening (for example, refer to Patent Document 1).

[0003] The lid unit includes a lid body that closes an upper opening portion of the container body and is provided with a liquid passage that communicates with the inside of the container body, and a lid that opens and closes the liquid passage in a state of being rotatably attached to the lid body via a first hinge portion. The lid unit also includes a lid locking mechanism that applies a force to the lid in a direction in which the liquid passage is opened by a first force applying member provided to the first hinge portion, and fixes the lid in a position in which the liquid passage is closed in a manner that overcomes the force of the first force applying member.

[0004] The lid locking mechanism has a locking member that is rotatably attached to the lid via a second hinge portion. The locking member rotates between a locked position in which a locking portion provided to one end side of the locking member is locked with a locking portion provided to the other end side of the lid body, and an unlocked position in which the locking of the locking portions is released. The lid locking mechanism also has a second force applying member that applies a force to the locking member in a direction in which the locking member is rotated toward the locked position.

[0005] In the lid locking mechanism, the locking member is pressed in a manner that overcomes the force of the second force applying member to release the fixing (locked state) of the lid, so that the lid is rotated in an opening direction by the force of the first force applying member.

[0006] In the container with a lid that has such a lid unit, the locked state of the lid by the lid locking mechanism is released, and the lid is rotated in an opening direction, so that the liquid passage is opened. Thus, the beverage in the container body can be drunk through the liquid passage.

[0007] Patent Document 1: Japanese Patent Application Publication No. 2010-23854

[0008] However, in the container with a lid that has the conventional lid unit described above, it is difficult to differentiate the product from other companies, and more effort is required to design in order to achieve an expansion of market share due to the differentiation of the product.

[0009] For example, in the conventional lid unit, a lid locking mechanism that is high in functionality and excellent in design is required. In particular, in the conventional lid locking mechanism, since the locking member described above is made of resin, it is difficult to balance the durability of the locking member and the design. SUMMARY

[0010] The present application has been made in view of the above-described circumstances, and aims to provide a lid unit provided with a lid locking mechanism that is high in functionality and excellent in design, and a container with a lid provided with the lid unit.

[0011] To achieve the above object, the present application provides the following means.

[0012] (1) A lid unit detachably attached to a container main body having an upper opening, characterized by comprising:

[0013] a lid main body that closes the upper opening of the container main body and is provided with a liquid passage that communicates with the inside of the container main body;

[0014] a lid body that is rotatably attached to the lid main body via a first hinge portion and opens and closes the liquid passage in a state in which a first urging member provided to the first hinge portion urges the lid body in a direction in which the liquid passage is opened; and

[0015] a lid locking mechanism that fixes the lid body in a position in which the liquid passage is closed against the urging of the first urging member,

[0016] the lid locking mechanism comprising:

[0017] a locking member that is rotatably attached to the lid main body via a second hinge portion and rotates between a locked position in which a locking portion provided to one end side and a locking portion provided to the other side of the lid body are locked and a locked release position in which the locking of the locking portion on one side and the locking portion on the other side is released; and

[0018] a cover member that covers the locking member.

[0019] (2) The lid unit according to (1) described above, characterized in that

[0020] the cover member is rotatably attached via the second hinge portion.

[0021] (3) The lid unit according to (1) described above, characterized in that

[0022] the cover member is attached to the locking member via a fixing mechanism.

[0023] (4) The lid unit according to (2) or (3) described above, characterized in that

[0024] the second hinge portion has:

[0025] a first hinge bearing portion provided to either the locking member or the lid main body;

[0026] a second hinge bearing portion and a third hinge bearing portion provided to either of the lock member or the lid main body;

[0027] a hinge shaft which is installed in a state of penetrating a shaft hole provided in the first hinge bearing portion, the second hinge bearing portion, and the third hinge bearing portion in the rotational axis direction, in a state where the first hinge bearing portion is positioned between the second hinge bearing portion and the third hinge bearing portion.

[0028] [5] The lid unit according to the above [4], characterized in that

[0029] the cover member has:

[0030] a cover main body which covers the lock member; and

[0031] a pair of support arms which protrude from the cover main body in a manner of being positioned on both sides across the first hinge bearing portion, and are provided with the shaft hole,

[0032] the cover member is installed integrally with the lock member.

[0033] [6] The lid unit according to the above [4], characterized in that

[0034] the cover member has:

[0035] a cover main body which covers the lock member; and

[0036] a pair of support arms which protrude from the cover main body in a manner of being positioned on both sides across the second hinge bearing portion and the third hinge bearing portion, and are provided with the shaft hole,

[0037] the cover member is installed integrally with the lock member.

[0038] [7] The lid unit according to the above [5] or [6], characterized in that

[0039] the cover member has the shaft hole in the pair of support arms for the hinge shaft to penetrate in the rotational axis direction,

[0040] the cover member is installed rotatably with the lock member.

[0041] [8] The lid unit according to the above [3], characterized in that

[0042] the second hinge portion has:

[0043] a first hinge bearing portion which is provided to either of the lock member or the lid main body;

[0044] a second hinge bearing portion and a third hinge bearing portion, which are provided to either of the lock member or the lid main body other than the one provided with the first hinge bearing portion; and

[0045] a hinge shaft which is installed in a state of penetrating a shaft hole provided in the first hinge bearing portion, the second hinge bearing portion, and the third hinge bearing portion in a rotational axis direction, in a state where the first hinge bearing portion is positioned between the second hinge bearing portion and the third hinge bearing portion,

[0046] the cover member has:

[0047] a cover main body which covers the lock member; and

[0048] a pair of support arms which protrude from the cover main body in a manner of being positioned on both sides across the first hinge bearing portion,

[0049] the fixing mechanism fixes the pair of support arms to the first hinge bearing portion.

[0050] 〔9〕 The lid unit according to any one of the above 〔3〕, characterized in that,

[0051] the second hinge portion has:

[0052] a first hinge bearing portion which is provided to either of the lock member or the lid main body,

[0053] a second hinge bearing portion and a third hinge bearing portion, which are provided to the other of the lock member or the lid main body other than the one provided with the first hinge bearing portion; and

[0054] a hinge shaft which is installed in a state of penetrating a shaft hole provided in the first hinge bearing portion, the second hinge bearing portion, and the third hinge bearing portion in a rotational axis direction, in a state where the first hinge bearing portion is positioned between the second hinge bearing portion and the third hinge bearing portion,

[0055] the cover member has:

[0056] a cover main body which covers the lock member; and

[0057] a pair of support arms which protrude from the cover main body in a manner of being positioned on both sides across the second hinge bearing portion and the third hinge bearing portion,

[0058] the fixing mechanism fixes the pair of support arms to the second hinge bearing portion and the third hinge bearing portion.

[0059] 〔10〕 The lid unit according to any one of the above 〔1〕 to 〔9〕, characterized in that,

[0060] the cover member is made of metal.

[0061] (11) A container with a lid characterized by comprising:

[0062] the lid unit described in any one of the above (1) to (10); and

[0063] a container body on which the lid unit is mounted.

[0064] (12) The container with a lid according to the above (11), characterized in that

[0065] the container body has a vacuum heat-insulating structure.

[0066] As described above, according to the present application, it is possible to provide a lid unit having a lid locking mechanism that is high in functionality and excellent in design, and a container with a lid having such a lid unit. BRIEF DESCRIPTION OF DRAWINGS

[0067] Figure 1 is a perspective view showing the appearance of a container with a lid provided with a lid unit of one embodiment of the present application.

[0068] Figure 2 is a sectional view showing the structure of the container with a lid.

[0069] Figure 3 is a sectional perspective view showing the structure of the lid unit.

[0070] Figure 4 is a sectional view showing a state in which the locking member is positioned at the locking position when the lid unit is closed.

[0071] Figure 5 is a sectional view showing a state in which the locking member is positioned at the locking release position when the lid unit is closed.

[0072] Figure 6 is a sectional view showing a state when the lid unit is opened.

[0073] Figure 7 is a perspective view showing a state when the lid unit is opened.

[0074] Figure 8 is a perspective view showing the structure of the mouth forming member.

[0075] Figure 9 shows the structure of the locking member, Figure 9 (a) of is a perspective view as viewed from the front side thereof, Figure 9 (b) of is a perspective view as viewed from the back side thereof.

[0076] Figure 10 is an exploded perspective view showing the lid locking mechanism as viewed from the front side.

[0077] Figure 11 is an exploded perspective view of the cover locking mechanism viewed from the rear side.

[0078] Figure 12 is an exploded perspective view of the locking member and the second force applying member viewed from the front side.

[0079] Figure 13 is an exploded perspective view of the locking member and the second force applying member viewed from the rear side.

[0080] Figure 14 is an exploded perspective view showing the structure of the locking member and the cover member.

[0081] Figure 15 is a main part perspective view showing the state where the cover member is attached to the locking member.

[0082] Figure 16 is an exploded perspective view showing a first modification of the cover member attached to the locking member.

[0083] Figure 17 is a perspective view showing a second modification of the cover member attached to the locking member.

[0084] Figure 18 is a side view showing a third modification of the cover member attached to the locking member.

[0085] Figure 19 is a perspective view showing a first hinge bearing portion constituting a first hinge portion.

[0086] Figure 20 is a perspective view showing a first hinge bearing portion, a second hinge bearing portion and a third hinge bearing portion constituting a first hinge portion viewed from one side.

[0087] Figure 21 is a perspective view showing a first hinge bearing portion, a second hinge bearing portion and a third hinge bearing portion constituting a first hinge portion viewed from the other side.

[0088] Figure 22 is a perspective view showing a first force applying member, a hinge shaft and an opposing member constituting a first hinge portion.

[0089] Figure 23 is a sectional perspective view showing the structure of the first hinge portion.

[0090] Figure 24 is a perspective view showing a rotation damping mechanism viewed from one side.

[0091] Figure 25 is a perspective view showing a rotation damping mechanism viewed from the other side.

[0092] Figure 26is an exploded perspective view of the rotation damping mechanism as viewed from one side.

[0093] Figure 27 is an exploded perspective view of the rotation damping mechanism as viewed from the other side.

[0094] Figure 28 is a sectional view showing the structure of the rotation damping mechanism.

[0095] Figure 29 is a perspective view showing another structure of the rotation damping mechanism.

[0096] BRIEF DESCRIPTION OF THE DRAWINGS

[0097] 1... lid unit; 2... container main body; 7... lid main body; 8... first hinge portion; 9... lid body; 12... mouth forming member; 13... liquid passage; 14... mouth opening / closing mechanism; 25... waterproof packing; 26... first urging member; 27... lid packing; 28... lid member; 36... lid locking mechanism; 37... second hinge portion; 38... locking member; 39... annular stopper; 40... first hinge bearing portion; 41... second hinge bearing portion; 42... third hinge bearing portion; 43... hinge shaft; 46... second urging member; 49... cover member; 51... rotation damping mechanism; 52... first hinge bearing portion; 53... second hinge bearing portion; 54... third hinge bearing portion; 55... hinge shaft; 56... counter member; 57... first gear; 58... second gear; 59... rotary damper; 60... damping case. DETAILED DESCRIPTION

[0098] Hereinafter, an embodiment of the present application will be described in detail with reference to the drawings.

[0099] As one embodiment of the present application, for example, a capped container 100 provided with a lid unit 1 as shown in FIG. 1 will be described. Figures 1 to 28

[0100] Further, Figure 1 is a perspective view showing the appearance of the capped container 100 provided with the lid unit 1. Figure 2 is a sectional view showing the structure of the capped container 100. Figure 3 is a sectional perspective view showing the structure of the lid unit 1. Figure 4 is a sectional view showing the state in which the locking member 38 is positioned at the locking position when the lid unit 1 is closed. Figure 5 is a sectional view showing the state in which the locking member 38 is positioned at the locking release position when the lid unit 1 is closed. Figure 6 is a sectional view showing the state when the lid unit 1 is opened. Figure 7 is a perspective view showing the state when the lid unit 1 is opened. Figure 8 is a perspective view showing the structure of the mouth forming member 12. Figure 9 ​Fig. 1 is a perspective view of the structure of the locking member 17. Figure 9 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 9 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 10 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 11 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 12 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 13 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 14 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 15 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 16 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 17 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 18 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 19 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 20 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 21 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 22 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 23 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 24 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 25 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 26 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 27 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 28 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 29 Fig. 1 is a perspective view of the structure of the locking member 17.

[0101] Fig. 1 is a perspective view of the structure of the locking member 17. Figure 1 Fig. 1 is a perspective view of the structure of the locking member 17. Figure 2As shown, the lid-equipped container 100 of the present embodiment is provided with the lid unit 1 of the present embodiment, and the container main body 2 to which the lid unit 1 is detachably attached. The lid-equipped container 100 is a beverage container capable of keeping a beverage (contents) housed in the container main body 2 warm or cold by the container main body 2 having a vacuum heat-insulating structure.

[0102] Specifically, the container main body 2 is composed of a double-layered container having, for example, a bottomed cylindrical outer container 3 composed of stainless steel or the like and an inner container 4, which are joined to each other by engaging the opening edge portions thereof in a state where the inner container 4 is housed inside the outer container 3. Further, a vacuum heat-insulating layer 5 is provided between the outer container 3 and the inner container 4. The vacuum heat-insulating layer 5 can be formed, for example, by plugging an exhaust hole provided in the central portion of the bottom surface of the outer container 3 in a chamber reduced in pressure (vacuumized) to a high vacuum.

[0103] The container main body 2 has a bottom surface portion 2a of a substantially circular shape, a cylindrical body portion 2b standing up from the outer periphery of the bottom surface portion 2a in a substantially cylindrical shape, and a substantially cylindrical neck portion 2c which is reduced in diameter at the upper portion side of the cylindrical body portion 2b. Further, the upper end portion of the neck portion 2c is opened in a circular shape as an upper opening portion 2d of the container main body 2. Further, the inner periphery surface of the neck portion 2c is reduced in diameter than the inner periphery surface of the cylindrical body portion 2b. Further, an annular protruding portion 6 is provided protruding on the inner periphery surface of the neck portion 2c over the entire circumference.

[0104] Further, the lid-equipped container 100 of the present embodiment has a substantially cylindrical overall appearance shape, but the appearance shape of the lid-equipped container 100 is not particularly limited and can be appropriately changed depending on the size, appearance design, or the like. Further, painting, printing, or the like can be applied to the outer periphery surface of the container main body 2.

[0105] The lid unit 1 of the present embodiment constitutes a plug body which closes the upper opening portion 2d of the above-described container main body 2. Specifically, as shown, Figures 3 to 7 the lid unit 1 is provided with a lid main body 7, and a lid body 9 rotatably attached to the lid main body 7 via a first hinge portion 8.

[0106] Further, in the following description, the side on which the lid body 9 is attached to the lid main body 7 via the first hinge portion 8 will be described as the "rear side (back side)" of the lid unit 1 (lid-equipped container 100), and the side opposite thereto will be described as the "front side (front side)" of the lid unit 1 (lid-equipped container 100).

[0107] The lid main body 7 is composed of, for example, a heat-resistant resin such as polypropylene (PP). The lid main body 7 has a peripheral wall portion 7a formed in a substantially cylindrical shape so as to be continuous with the cylindrical body portion 2b of the container main body 2, and an upper wall portion 7c formed by forming an opening portion 7b reduced in diameter than the peripheral wall portion 7a at the upper portion of the peripheral wall portion 7a.

[0108] The cap body 7 is detachably mounted to the neck portion 2c of the container body 2 by screwing it on. Therefore, an internal thread portion 10 is provided on the inner circumferential surface of the peripheral wall portion 7a. On the other hand, an external thread portion 11 that engages with the internal thread portion 10 is provided on the outer circumferential surface of the neck portion 2c.

[0109] like Figures 3 to 9 As shown, a mouth-forming component 12, forming a drinking spout or injection spout (drinking spout in this embodiment), is detachably installed at the opening 7b of the cap body 7. The mouth-forming component 12 is made of, for example, a heat-resistant resin such as polypropylene (PP). A generally circular liquid inlet 13 communicating with the inside of the container body 2 is provided on the mouth-forming component 12.

[0110] The mouth-forming component 12 includes: a bottom wall portion 12a having a liquid inlet 13; a cylindrical peripheral wall portion 12b that rises upward from around the bottom wall portion 12a; a lower flange portion 12c that protrudes annularly from the lower end of the outer peripheral surface of the bottom wall portion 12a; a pair of upper flange portions 12d that protrude laterally from the upper end of the outer peripheral surface of the peripheral wall portion 12b to opposite sides; and a drinking mouth portion 12e that protrudes obliquely from the upper end of the front side of the peripheral wall portion 12b.

[0111] An opening removal and installation mechanism 14 is provided between the cover body 7 and the opening forming member 12 for freely installing and removing the opening forming member 12 at the opening 7b of the cover body 7. The opening removal and installation mechanism 14 has a first claw 15 on the front side of the opening forming member 12 and a locking member 17 with a second claw 16 on the rear side of the opening forming member 12.

[0112] The first claw portion 15 is configured to protrude forward from the upper end of the outer peripheral surface of the peripheral wall portion 12b. The second claw portion 16 is configured to protrude rearward from the upper end (front end) of the locking member 17.

[0113] The locking member 17 is mounted via a hinge portion 18 located at the lower end of the rear side of the opening forming member 12, allowing it to rotate freely in the front-rear direction. The hinge portion 18 includes: a first hinge bearing portion 12f located in the opening forming member 12; a second hinge bearing portion 17a and a third hinge bearing portion 17b located in the locking member 17; and a hinge shaft 19, which is mounted with shaft holes 12g, 17c, and 17d provided in the first hinge bearing portion 12f, the second hinge bearing portion 17a, and the third hinge bearing portion 17b, passing through the rotation axis direction. Furthermore, an operating portion 17e is provided at the upper end of the locking member 17, having a recess or protrusion for easy rotation of the locking member 17 by a finger.

[0114] A force applying member 20 that applies a force to the locking member 17 toward the rear side in the rotation direction is disposed between the mouth forming member 12 and the locking member 17. The force applying member 20 is composed of, for example, an elastic member such as a rubber having heat resistance such as silicone rubber. The force applying member 20 is mounted to the face of the locking member 17 opposite to the mouth forming member 12 by embedding a mounting protrusion 22 provided on the front side of the locking member 17 in a mounting hole 21 provided on the rear side of the force applying member 20.

[0115] When the front end side of the locking member 17 is rotated toward the front, the force applying member 20 is compressed (elastically deformed) between the locking member 17 and the mouth forming member 12, thereby applying a force to the locking member 17 toward the rear.

[0116] The mouth attaching / detaching mechanism 14 has a first engaged portion 23 on the front side of the lid main body 7 and a second engaged portion 24 on the rear side of the lid main body 7. The first engaged portion 23 and the second engaged portion 24 are composed of step portions provided on the upper wall portion 7c at positions along the front and rear of the opening portion 7b, respectively.

[0117] In the mouth attaching / detaching mechanism 14, in a state where the first claw portion 15 is positioned with respect to the first engaged portion 23, the mouth forming member 12 is inserted from the lower side into the inside of the opening portion 7b of the lid main body 7. At this time, a state where the pair of upper flange portions 12d abut against the lower surface of the upper wall portion 7c of the lid main body 7 is obtained. In addition, the first claw portion 15 is engaged by the first engaged portion 23. In addition, the second claw portion 16 is made to abut against the edge of the opening portion 7b of the lid main body 7, and the second claw portion 16 is made to pass over the edge of the opening portion 7b, along with this, the front end side of the locking member 17 is rotated toward the front, and thereafter the front end side of the locking member 17 is restored to the original position toward the rear, along with this, the second claw portion 16 is engaged by the second engaged portion 24.

[0118] Thus, the mouth forming member 12 becomes a state of being mounted to the opening portion 7b of the lid main body 7. In addition, the mouth forming member 12 is mounted while the drinking mouth portion 12e becomes a state of protruding toward the outside (upward) from the opening portion 7b of the lid main body 7.

[0119] On the other hand, in the mouth attaching / detaching mechanism 14, by an operation of rotating the front end side of the locking member 17 toward the front, the engaged state of the second claw portion 16 with respect to the second engaged portion 24 is released. Thus, it is possible to release the engaged state of the first claw portion 15 with respect to the first engaged portion 23, and to take out the mouth forming member 12 from the lower side of the opening portion 7b of the lid main body 7. Thus, it is possible to separately clean the mouth forming member 12 and the lid main body 7, respectively, and thereby it is possible to maintain the mouth forming member 12 and the lid main body 7 to be hygienic.

[0120] The lid body 7, to which the spout forming member 12 is attached, is attached to the neck portion 2c of the container body 2, thereby closing the upper opening portion 2d of the container body 2 with the spout forming member 12 embedded inside the upper opening portion 2d.

[0121] As shown in FIG. 1, the spout forming member 12 is attached to the lid body 7. The spout forming member 12 is a member for forming a spout for pouring the contents of the container 1. The spout forming member 12 is formed in a substantially cylindrical shape. The spout forming member 12 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The spout forming member 12 has a spout 13 for pouring the contents of the container 1. The spout 13 is formed in a substantially cylindrical shape. The spout 13 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The spout 13 is formed in a substantially cylindrical shape. The spout 13 is formed of a heat-resistant resin such as polypropylene (PP) or the like. Figures 3 to 6 As shown in FIG. 1, the spout forming member 12 is attached to the lid body 7. The spout forming member 12 is a member for forming a spout for pouring the contents of the container 1. The spout forming member 12 is formed in a substantially cylindrical shape. The spout forming member 12 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The spout forming member 12 has a spout 13 for pouring the contents of the container 1. The spout 13 is formed in a substantially cylindrical shape. The spout 13 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The spout 13 is formed in a substantially cylindrical shape. The spout 13 is formed of a heat-resistant resin such as polypropylene (PP) or the like.

[0122] The waterproof packing 25 is attached to the lower flange portion 12c of the spout forming member 12 so as to be detachable. The waterproof packing 25 is a ring-shaped sealing member for sealing between the extension portion 6 (container body 2) and the spout forming member 12 (lid body 7). The waterproof packing 25 is formed of a rubber having heat resistance such as silicone rubber or the like, an elastic member or the like. The waterproof packing 25 is fitted to the outer peripheral portion of the lower flange portion 12c.

[0123] The waterproof packing 25 is attached to the lower flange portion 12c of the spout forming member 12 so as to be detachable. The waterproof packing 25 is a ring-shaped sealing member for sealing between the extension portion 6 (container body 2) and the spout forming member 12 (lid body 7). The waterproof packing 25 is formed of a rubber having heat resistance such as silicone rubber or the like, an elastic member or the like. The waterproof packing 25 is fitted to the outer peripheral portion of the lower flange portion 12c.

[0124] The lid body 9 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The lid body 9 has a peripheral wall portion 9a formed in a substantially cylindrical shape so as to be continuous with the peripheral wall portion 7a of the lid body 7, a top wall portion 9b covering the top surface of the peripheral wall portion 9a, and a substantially cylindrical inner wall portion 9c descending from the lower surface of the top wall portion 9b in a state where the top wall portion 9b is penetrated.

[0125] The lid body 9 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The lid body 9 has a peripheral wall portion 9a formed in a substantially cylindrical shape so as to be continuous with the peripheral wall portion 7a of the lid body 7, a top wall portion 9b covering the top surface of the peripheral wall portion 9a, and a substantially cylindrical inner wall portion 9c descending from the lower surface of the top wall portion 9b in a state where the top wall portion 9b is penetrated.

[0126] The lid body 9 is formed of a heat-resistant resin such as polypropylene (PP) or the like. The lid body 9 has a peripheral wall portion 9a formed in a substantially cylindrical shape so as to be continuous with the peripheral wall portion 7a of the lid body 7, a top wall portion 9b covering the top surface of the peripheral wall portion 9a, and a substantially cylindrical inner wall portion 9c descending from the lower surface of the top wall portion 9b in a state where the top wall portion 9b is penetrated.

[0127] The sealing member 27 is a bottomed cylindrical sealing component that is detachably and removably installed on the inner wall portion 9c of the cover body 9. Specifically, the sealing member 27 is detachably and removably installed on the lower end side of the inner wall portion 9c with the inner wall portion 9c embedded in its inner central hole 27a. In addition, the front end of the sealing member 27 is formed into a dome shape.

[0128] The sealing member 27 is installed relative to the cover body 9 by embedding its inner wall portion 9c into the inner side of the central hole 27a. Thus, in the cover unit 1, when the cover body 9 closes the upper part of the cover body 7, the sealing member 27 is in a state of elastic deformation while tightly adhering to the periphery of the liquid inlet 13. This allows the liquid inlet 13 of the opening forming member 12 to be closed.

[0129] On the other hand, by removing the sealing cap 27 from the inner wall portion 9c (cap 9), the sealing cap 27 and the cap 9 can be cleaned separately, thereby maintaining hygiene between the sealing cap 27 and the cap 9.

[0130] A cover member 28 is installed on the upper surface of the top wall portion 9b, covering the upper end of the inner wall portion 9c. The cover member 28 is made of the same material as the cover body 9 and is formed into a generally circular plate shape. On the other hand, a recess 29 with a shape corresponding to the cover member 28 is provided on the upper surface of the top wall portion 9b. The cover member 28 is fitted into the inside of the recess 29.

[0131] The cover unit 1 includes a cover locking mechanism 36, which fixes the cover body 9 relative to the cover body 7 in a position where the liquid inlet 13 is closed (hereinafter referred to as the closed position) in a manner that overcomes the force applied by the first force-applying member 26.

[0132] Specifically, such as Figures 4 to 6 as well as Figures 10 to 15 As shown, the cover locking mechanism 36 includes: a locking member 38, which is rotatably mounted to the cover body 7 via a second hinge portion 37; and an annular stop member 39, which is rotatably mounted to the cover body 7 via a second hinge portion 37.

[0133] The second hinge portion 37 includes: a first hinge bearing portion 40 disposed on the locking member 38; a second hinge bearing portion 41 and a third hinge bearing portion 42 disposed on the cover body 7; and a hinge shaft 43, which is installed with the first hinge bearing portion 40 located between the second hinge bearing portion 41 and the third hinge bearing portion 42, and with the shaft holes 40a, 41a, and 42a provided in the first hinge bearing portion 40, the second hinge bearing portion 41, and the third hinge bearing portion 42 passing through the shaft holes 40a, 41a, and 42a provided in the first hinge bearing portion 40, the second hinge bearing portion 41, and the third hinge bearing portion 42 along the rotation axis direction.

[0134] The locking member 38 is supported so as to be rotatable by the second hinge portion 37 of the side surface (peripheral wall portion 7a) of the front side of the lid main body 7. The locking member 38 has a first arm portion 38a which is elongated upward from the second hinge portion 37, and a second arm portion 38b which is elongated downward from the second hinge portion 37.

[0135] A hook portion 44 which is one of the locking portions is provided in a manner protruding toward the rear at the front end (upper end of the locking member 38) of the first arm portion 38a. On the other hand, a hook receiving portion 45 which is the other of the locking portions for the hook portion 44 of the locking member 38 to be locked is provided in a manner protruding toward the front at the side surface (peripheral wall portion 9a) of the front side of the lid body 9.

[0136] The locking member 38 is rotatable between a position at which the hook portion 44 and the hook receiving portion 45 are locked (hereinafter referred to as "locked position"), and a position at which the hook portion 44 and the hook receiving portion 45 are released from the locked state (hereinafter referred to as "locked release position").

[0137] A second urging member 46 is disposed between the second arm portion 38b and the peripheral wall portion 7a. The second urging member 46 is composed of, for example, a rubber having heat resistance such as silicone rubber, or an elastic member, and is easily colored unlike metal.

[0138] The second urging member 46 is rotatably mounted via the second hinge portion 37, and urges the locking member 38 toward the locked position side in the rotation direction. Specifically, the second urging member 46 has an elastically deformed portion 46a which is located between the second arm portion 38b and the peripheral wall portion 7a, and a support piece portion 46c which is elongated upward from the elastically deformed portion 46a, and is provided with a shaft hole 46b.

[0139] The elastically deformed portion 46a is provided so as to be elongated in the front-rear direction in a substantially long cylindrical shape. In addition, a substantially cylindrical fitting protrusion 46d is provided in a manner protruding toward the front at the front end of the elastically deformed portion 46a. On the other hand, a fitting hole portion 47 into which the fitting protrusion 46d is fitted is provided at the second arm portion 38b of the locking member 38. Further, with respect to the fitting hole portion 47, it is not necessary that the structure in which the second arm portion 38b is penetrated, but it can be a fitting recess portion into which the fitting protrusion 46d is fitted.

[0140] The support piece portion 46c is provided so as to be elongated in the up-down direction in a substantially flat plate shape. On the other hand, a slit portion 48 into which the support piece portion 46c is inserted is provided at the first hinge bearing portion 40.

[0141] Thus, the second urging member 46 is mounted integrally with the locking member 38 in a state where the fitting protrusion 46d is fitted in the fitting hole portion 47 and the support piece portion 46c is inserted inside the slit portion 48. In addition, the second urging member 46 is rotatably mounted with the locking member 38 via the second hinge portion 37 in a state where the hinge shaft 43 penetrates the shaft hole 46b in the rotational axis direction.

[0142] Thus, for the second urging member 46, when a pressing operation is performed on the second arm portion 38b side of the locking member 38, the elastic deformation portion 46a is compressed between the second arm portion 38b and the peripheral wall portion 7a, thereby urging the locking member 38 toward the locking position side in the rotational direction.

[0143] The lid locking mechanism 36 has a cover member 49 made of metal, such as stainless steel, which covers the locking member 38. The cover member 49 has a cover main body 49a which covers the locking member 38, and a pair of support arms 49c which protrude from the cover main body 49a in a manner so as to be located on both sides of the first hinge bearing portion 40, and which are provided with shaft holes 49b through which the hinge shaft 43 penetrates. In addition, the plate thickness of the cover member 49 is preferably about 0.2 to 1.0 mm.

[0144] In addition, for the cover member 49, as a fixing mechanism which fixes the cover member 49 by the pair of support arms 49c at the first hinge bearing portion 40, there are a locking protrusion 49d which protrudes in the up and down direction from the front end of the pair of support arms 49c, and a locking recess portion 40b which locks the locking protrusion 49d on both sides of the first hinge bearing portion 40.

[0145] Thus, the cover member 49 is mounted integrally with the locking member 38 in a state where the cover main body 49a covers the front side of the locking member 38 and the locking protrusion 49d of the pair of support arms 49c is locked in the locking recess portion 40b of the first hinge bearing portion 40. In addition, the cover member 49 is rotatably mounted with the locking member 38 via the second hinge portion 37 in a state where the hinge shaft 43 penetrates the shaft hole 49b in the rotational axis direction.

[0146] Thus, the cover member 49 is rotatable with the locking member 38 between the locking position and the locking release position in a state where it covers the locking member 38.

[0147] The annular stopper 39 is made of a part of an open ring-shaped member, has shaft holes 39a through which the hinge shaft 43 penetrates at both ends thereof, and is rotatably supported outside the second hinge portion 37 (the second hinge bearing portion 41 and the third hinge bearing portion 42). Thus, the annular stopper 39 is rotatable in the up and down direction.

[0148] On the other hand, a stopper receiving portion 50 for receiving the annular stopper 39 is provided on the side surface (peripheral wall portion 9a) of the front side of the cover 9. The stopper receiving portion 50 is provided in a shape corresponding to the inner side of the annular stopper 39 so as to protrude forward from a position surrounding the periphery of the hook receiving portion 45.

[0149] In the cover locking mechanism 36, when the cover 9 closes the upper portion of the cover body 7, the hook portion 44 of the locking member 38 is caught by the hook receiving portion 45, thereby maintaining the state in which the cover 9 closes the upper portion of the cover body 7 (hereinafter, referred to as "locked state"). From the locked state, a pressing operation is performed on the 2nd arm portion 38b side of the locking member 38, thereby releasing the caught state of the hook portion 44 with respect to the hook receiving portion 45. Thus, the cover 9 can be rotated in the opening direction by the urging force of the 1st urging member 26.

[0150] On the other hand, in the cover locking mechanism 36, when the cover 9 closes the upper portion of the cover body 7, the annular stopper 39 is received by the stopper receiving portion 50, thereby preventing the rotation of the cover 9 in the opening direction. Thus, in the cover locking mechanism 36, the cover 9 can be prevented from being opened by unnecessary operation of the locking member 38.

[0151] Further, regarding the cover member 49, the structure of the fixing mechanism in which the catching protrusion 49d is caught by the above-mentioned catching recess portion 40b is not necessarily limited. For example, as the fixing mechanism of the cover member 49, as shown in FIG. 6, a structure in which a pair of bent pieces 49e are bent from the front ends of a pair of support arms 49c in directions opposite to each other, and the 1st hinged bearing portion 40 is sandwiched by the above-mentioned pair of bent pieces 49e can be employed. Figure 16

[0152] Further, as the fixing mechanism of the cover member 49, as shown in FIG. 7, a structure in which a pair of catching pieces 49f are cut from a part of the pair of support arms 49c, and the above-mentioned pair of catching pieces 49f are caught by the catching receiving portions 40c provided to the 1st hinged bearing portion 40 can be employed. Figure 17 Further, in the cover member 49, as shown in FIG. 8, the shaft holes 49b provided to the pair of support arms 49c can be provided in a long hole shape, and the protrusions 40d provided to the 1st hinged bearing portion 40 can be engaged with the shaft holes 49b, thereby preventing the misalignment of the cover member 49 with respect to the 1st hinged bearing portion 40 (locking member 38).

[0153] Figure 18 Further, in the cover member 49, as shown in FIG. 8, the shaft holes 49b provided to the pair of support arms 49c can be provided in a long hole shape, and the protrusions 40d provided to the 1st hinged bearing portion 40 can be engaged with the shaft holes 49b, thereby preventing the misalignment of the cover member 49 with respect to the 1st hinged bearing portion 40 (locking member 38).

[0154] ​​Furthermore, in this embodiment, the cover member 49 is configured to be rotatably mounted together with the locking member 38 via the second hinge portion 37 with the hinge shaft 43 passing through the shaft hole 49b in the direction of rotation. However, the second hinge portion 37 only needs to function as a hinge member and is not limited to a structure through which the hinge shaft 43 passes.

[0155] In addition, the cover component 49 can be installed in a structure that is integral with the locking component 38 and rotatably mounted relative to the second hinge portion 37. For example, it can also be a structure in which the cover component 49 and the locking component 38 are integrally mounted by the above-mentioned fixing mechanism.

[0156] In addition, in this embodiment, the second hinge portion 37 is configured to include a first hinge bearing portion 40 provided on the locking member 38, and a second hinge bearing portion 41 and a third hinge bearing portion 42 provided on the cover body 7, but it is also possible to form a structure that allows the locking member 38 side to be interchanged with the cover body 7 side.

[0157] That is, it can also be configured such that a first hinge bearing portion is provided on the side of the cover body 7, and a second hinge bearing portion and a third hinge bearing portion are provided on the side of the locking member 38. In this configuration, a pair of support arms 49c of the cover member 49 protrude from the cover body 49a on both sides of the second hinge bearing portion and the third hinge bearing portion provided on the locking member 38, and the cover member 49 is fixed to the second hinge bearing portion and the third hinge bearing portion by the hinge shaft 43 or a fixing mechanism.

[0158] In addition, such as Figures 19 to 28 As shown, a rotation damping mechanism 51 is provided in the first hinge part 8, which reduces the rotation speed of the cover 9 that rotates due to the force applied by the first force-applying member 26.

[0159] Specifically, the first force-applying component 26 is a torsion spring, having a coiled portion 26a, a one-sided arm 26b extending from one end of the coiled portion 26a, and another-sided arm 26c extending from the other end of the coiled portion 26a.

[0160] The first hinge portion 8 includes: a first hinge bearing portion 52, which is disposed on either the cover body 7 or the cover 9 (in this embodiment, the cover body 7); a second hinge bearing portion 53 and a third hinge bearing portion 54, which are disposed on either the cover body 7 or the cover 9 (in this embodiment, the cover 9); and a hinge shaft 55, which is installed with the first hinge bearing portion 52 located between the second hinge bearing portion 53 and the third hinge bearing portion 54, and with the shaft holes 52a, 53a, and 54a provided in the first hinge bearing portion 52, the second hinge bearing portion 53, and the third hinge bearing portion 54 passing through the shaft holes 52a, 53a, and 54a provided in the first hinge bearing portion 52, the second hinge bearing portion 53, and the third hinge bearing portion 54 along the rotation axis direction.

[0161] The first hinge bearing portion 52 has a shaft hole 52a that penetrates in the rotation axis direction and is formed in a substantially cylindrical shape, and is provided so as to protrude from the rear side central portion of the lid main body 7.

[0162] The second hinge bearing portion 53 is provided so as to protrude from one side of the rear side central portion of the lid body 9, in a manner having a shaft hole 53a that penetrates in the rotation axis direction and having a shape that is continuous with the first hinge bearing portion 52.

[0163] The third hinge bearing portion 54 is provided so as to protrude from the other side of the rear side central portion of the lid body 9, in a manner having a shaft hole 54a that penetrates in the rotation axis direction and having a shape that is continuous with the first hinge bearing portion 52.

[0164] The first hinge bearing portion 52 is provided with a housing recess 52b that is recessed in a substantially cylindrical shape in the rotation axis direction on the side of the surface that opposes the third hinge bearing portion 54. Further, the first hinge bearing portion 52 is provided with one arm receiving portion 52c that is recessed in correspondence with the shape of one arm portion 26b of the first force applying member 26 on the side of the surface that opposes the third hinge bearing portion 54.

[0165] The first force applying member 26 is disposed inside the first hinge bearing portion 52 in a state in which the winding portion 26a is housed inside the housing recess 52b and one arm portion 26b is engaged with one arm receiving portion 52c.

[0166] On the other hand, the third hinge bearing portion 54 is provided with an opposing member 56 that constitutes the surface that opposes the first hinge bearing portion 52. The opposing member 56 has a shaft hole 56a through which the hinge shaft 55 penetrates, and is mounted in a state in which it is embedded inside the fitting recess 54b provided in the third hinge bearing portion 54.

[0167] Further, the opposing member 56 is provided with a fitting protrusion 56b that protrudes in correspondence with the shape of the housing recess 52b on the surface that opposes the first hinge bearing portion 52, and the other arm receiving portion 56c that is recessed in correspondence with the shape of the other arm portion 26c of the first force applying member 26.

[0168] The opposing member 56 is disposed so as to be rotatable together with the third hinge bearing portion 54 in a state in which the fitting protrusion 56b is fitted with the housing recess 52b and the other arm portion 26c of the first force applying member 26 is engaged with the other arm receiving portion 56c.

[0169] Thus, when the first force applying member 26 rotates the lid body 9 toward the side opposite to the opening direction (hereinafter, referred to as the closing direction) from the position at which the opening port 13 of the lid body 9 is opened (hereinafter, referred to as the opening position), the spread angle of the one arm portion 26b and the other arm portion 26c is elastically deformed in the direction in which the spread angle is narrowed, and thus the elastic restoring force thereof can apply a force to the lid body 9 with respect to the lid main body 7 in the opening direction.

[0170] Further, regarding the counter member 56, a material different from the first hinge bearing portion 52 (the lid main body 7), such as polyoxymethylene (POM), acrylonitrile-butadiene-styrene (ABS), or the like, which has excellent wear resistance, can be appropriately used.

[0171] In the first hinge portion 8, by separately providing the counter member 56 having excellent wear resistance and the third hinge bearing portion 54, an improvement in durability can be achieved. Further, regarding the counter member 56, the structure in which the counter member 56 is provided separately from the third hinge bearing portion 54 is not limited, and the structure in which the counter member 56 is integrated with the third hinge bearing portion 54 can also be used.

[0172] The rotation damping mechanism 51 is provided between the first hinge bearing portion 52 and the second hinge bearing portion 53. Specifically, the rotation damping mechanism 51 has a first gear 57 attached to the first hinge bearing portion 52, a second gear 58 engaged with the first gear 57, a rotation damper 59 that supports the second gear 58 so as to be rotatable and applies a resistance to the rotation of the second gear 58, and a damping case 60 that rotates integrally with the lid body 9 while the rotation damper 59 is held.

[0173] The damping case 60 accommodates the first gear 57, the second gear 58, and the rotation damper 59 inside, and thus the above-described members cannot be visually observed from the outside. In the lid unit 1 of the present embodiment, the first force applying member 26 and the rotation damping mechanism 51 are efficiently arranged in the limited space inside the first hinge portion 8 and the lid body 9.

[0174] Further, regarding the first gear 57 and the second gear 58, a material having excellent wear resistance, such as polyoxymethylene (POM), acrylonitrile-butadiene-styrene (ABS), or the like, can be appropriately used.

[0175] Regarding the damping case 60, a material having excellent dimensional formability, such as polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), or the like, can be appropriately used.

[0176] The first gear 57 has a shaft hole 57a through which the hinge shaft 55 passes, and a fixed shaft 57b that protrudes from a surface opposite the first hinge bearing portion 52. The first gear 57 is mounted integrally with the first hinge bearing portion 52 in a state in which the fixed shaft 57b is fitted into a fixed hole 52d provided in a surface of the first hinge bearing portion 52 opposite the second hinge bearing portion 53.

[0177] The second gear 58 is positioned further forward than the first gear 57, and is supported so as to be free to rotate by a rotation damper 59 in a manner engaged with the first gear 57. The rotation damper 59 applies resistance to rotation of the second gear 58 using viscous resistance of oil filled inside, so as to reduce the rotational speed.

[0178] The damper case 60 has a shaft hole 60a through which the hinge shaft 55 passes, and a stopper claw 60b that is stopped by a stopper hole 9d provided on the inner side of the cover 9 as shown. Figure 7 The damper case 60 is configured to be free to rotate with the second hinge bearing portion 53.

[0179] The damper case 60 is provided with a first recessed portion 60c that recesses a surface side opposite the second hinge bearing portion 53 in correspondence with the second gear 58 and the rotation damper 59, and a second recessed portion 60d that recesses a surface side opposite the first hinge bearing portion 52 in correspondence with the first gear 57. The first recessed portion 60c and the second recessed portion 60d communicate at a position overlapping each other.

[0180] The first gear 57 and the second gear 58 are engaged with each other via the first recessed portion 60c and the second recessed portion 60d. The rotation damper 59 has a fixed hole 59a through which a pair of fixed pins 60e provided on the inner side of the first recessed portion 60c pass, and a fixed groove 59b, and is fitted on the inner side of the first recessed portion 60c.

[0181] Thus, in the rotation damping mechanism 51, when the locked state of the cover 9 by the cover locking mechanism 36 described above is released, the rotational speed of the cover 9 that rotates from the closed position toward the open position by the urging of the first urging member 26 can be suppressed.

[0182] Specifically, in this rotation damping mechanism 51, when the cover 9 rotates from the closed position toward the open position by the urging of the first urging member 26, the damper case 60 rotates with the cover 9.

[0183] At this time, in conjunction with the rotation of the second gear 58 engaged with the first gear 57, the rotation damper 59 applies resistance to the rotation of the second gear 58, so as to reduce the rotational speed of the second gear 58. Thus, the rotational speed of the cover 9 that rotates toward the open position is suppressed to be low by the resistance of the rotation damper 59.

[0184] Therefore, in the lid unit 1 of the present embodiment, even in a case where the pressure in the container body 2 rises, for example, when hot water is poured into the container body 2, the lid body 9 can be prevented from being forcibly rotated toward the open position by the momentum when the pressure in the container body 2 is released due to the release of the locked state of the lid body 9.

[0185] Further, in the first hinge portion 8, the structure in which the first hinge bearing portion 52 is provided on the lid body 7 side and the second and third hinge bearing portions 53 and 54 are provided on the lid body 9 side is not limiting, and the structure in which the first hinge bearing portion 52 is provided on the lid body 9 side and the second and third hinge bearing portions 53 and 54 are provided on the lid body 7 side can also be adopted. In addition, in the first hinge portion 8, the structure on the second hinge bearing portion 53 side and the structure on the third hinge bearing portion 54 side can also be interchanged.

[0186] Further, the damper case 60 can also be configured to be provided integrally with the lid body 7 while the rotational damper 59 is held, as shown in Figure 29 In this structure, as long as the structure in which the first gear 57 is installed in the second hinge bearing portion 53, the damper case 60 in which the second gear 58 engaged with the first gear 57 and the rotational damper 59 are held is provided integrally with the first hinge bearing portion 52.

[0187] As described above, in the lid unit 1 of the present embodiment, in the lid locking mechanism 36, the second urging member 46 is rotatably installed via the second hinge portion 37. Thus, in the lid locking mechanism 36, the second urging member 46 can be disposed between the second arm portion 38b of the locking member 38 and the peripheral wall portion 7a of the lid body 7 in a stable state in which the second urging member 46 does not fall off. Further, since falling off during assembly does not occur, assembly is easy. Further, even if a force is applied from the outside after assembly, falling off does not occur.

[0188] Further, in the lid locking mechanism 36, the second urging member 46 can be rotatably installed in the second hinge portion 37 in a state in which the second urging member 46 is integrally installed with the locking member 38. Thus, in the lid locking mechanism 36, the second urging member 46 can be easily and stably disposed between the second arm portion 38b of the locking member 38 and the peripheral wall portion 7a of the lid body 7.

[0189] Further, in the lid locking mechanism 36, the second urging member 46 is disposed in a manner to fill a gap formed between the second arm portion 38b of the locking member 38 and the peripheral wall portion 7a of the lid body 7. Thus, water, dust, and the like during cleaning can be prevented from entering and remaining in such a gap, and thus the lid locking mechanism 36 is relatively hygienic.

[0190] In addition, the second force applying member 46 is formed of the elastic member described above, and thus can be formed in a colored state, so that it is easy to color and the range of color selection is wide compared with a spring member made of metal. Therefore, in the case where the second force applying member 46 is made to be the same color as the lid main body 7 and the locking member 38, the second force applying member 46 can be made unnoticeable in appearance. On the other hand, in the case where the second force applying member 46 is made to be a different color, the design on the appearance can be added with ornamentation.

[0191] In addition, in the lid locking mechanism 36, the cover member 49 made of metal that covers the locking member 38 described above is rotatably attached via the second hinge portion 37. Thereby, in the lid locking mechanism 36, the locking member 38 can be protected by the cover member 49, and the support strength of the locking member 38 when being rotatably supported by the second hinge portion 37 can be improved.

[0192] Therefore, in the lid locking mechanism 36, by covering the locking member 38 with the cover member 49 made of metal, the locking member 38 can be reduced or thinned to a size that has not been cracked due to insufficient strength so far. In addition, by generally giving the appearance of the locking member 38 made of resin a metallic texture, the flow marks and the like caused by molding can be further covered. Thereby, not only the appearance of the locking member 38 is improved, but also the durability and the designability of the locking member 38 can be taken into account.

[0193] Further, in the case where the locking member 38 is made of metal instead of being provided with the cover member 49 made of metal, the hook portion 44 made of metal and the hook receiving portion 45 made of resin are in sliding contact. In this case, depending on the selection of the material of the lid body 9, there is a case where the hook receiving portion 45 that is weak in strength due to repeated use is worn. In addition, by making the locking member 38 of metal, not only the processing and the cost of the material are increased due to the complicated shape, but also the weight of the locking member 38 is increased. In contrast to this, the cover member 49 is thin in plate thickness, and thus can be manufactured at low cost by sheet metal stamping or the like, regardless of casting or cutting.

[0194] As described above, in the lid unit 1 of the present embodiment, the lid locking mechanism 36 that is high in functionality and excellent in designability can be obtained.

[0195] In addition, in the lid unit 1 of the present embodiment, the rotation damping mechanism 51 that attenuates the rotation speed of the lid body 9 that is rotated by the force of the first force applying member 26 described above is provided, and thus when the locked state of the lid body 9 by the lid locking mechanism 36 is released, the lid body 9 can be prevented from being forcibly rotated in the opening direction.

[0196] Thus, in the lid unit 1 of the present embodiment, when the lid body 9 is turned in the opening direction, it is possible to prevent beverage or condensed water droplets adhering to the inner side of the lid body 9 (particularly the lid packing 27) from splashing outside. In addition, it is possible to prevent the lid body 9 from being turned in the closing direction due to the reaction force when it bounces back after being turned in the opening direction with force. In addition, the lid body 9 is turned in the opening direction at a substantially constant speed, so the use is pleasant.

[0197] In addition, in the lid unit 1 of the present embodiment, it is possible to suppress the wear occurring between the first hinge bearing portion 52 and the second and third hinge bearing portions 53 and 54 to be low, to achieve an improvement in the durability of the first hinge portion 8.

[0198] In addition, in the lid unit 1 of the present embodiment, the first gear 57, the second gear 58, and the rotation damper 59 described above are all disposed inside the damper case 60, so they cannot be confirmed in appearance, and a good appearance can be given. In addition, it is possible to prevent small foreign matter or the like from entering the meshing portion of the first and second gears 57 and 58 and degrading the damping function.

[0199] Thus, in the lid unit 1 of the present embodiment, by having such a lid unit 1, it is possible to achieve a further improvement in the convenience of use.

[0200] Furthermore, the present application is not necessarily limited to the above-described embodiments, and various modifications can be added within the scope of the gist of the present application.

[0201] For example, in the above-described embodiments, the case where the present application is applied to a beverage container in which the container body 2 has a heat retaining or heat keeping function by having the above-described vacuum heat insulating structure is exemplified, but the present application can be widely applied to a covered container having a container body and a lid unit detachably attached to the container body.

Claims

1. A lid unit detachably attached to a container body having an upper opening, the lid unit characterized by comprising: a lid body closing the upper opening of the container body and provided with a liquid passage communicating with the inside of the container body; a lid member rotatably attached to the lid body via a first hinge portion and opening and closing the liquid passage in a state where a first urging member provided to the first hinge portion urges the lid member in a direction to open the liquid passage; and a lid locking mechanism fixing the lid member in a position closing the liquid passage against the urging of the first urging member, the lid locking mechanism comprising: a locking member rotatably attached to the lid body via a second hinge portion and rotating between a locked position where a locking portion provided to one end side and a locking portion provided to the other end side of the lid member are locked, and a locked release position where the locking of the locking portion provided to the one end side and the locking portion provided to the other end side is released; and a cover member covering the locking member and rotatably attached via the second hinge portion, the second hinge portion having: a first hinge bearing portion provided to either one of the locking member or the lid body; a second hinge bearing portion and a third hinge bearing portion provided to the other one of the locking member or the lid body; and a hinge shaft provided in a state where the first hinge bearing portion is located between the second hinge bearing portion and the third hinge bearing portion, in a state where the hinge shaft penetrates shaft holes provided in the first hinge bearing portion, the second hinge bearing portion and the third hinge bearing portion in a direction of an axis of rotation, the cover member having: a cover body covering the locking member; and a pair of support arms protruding from the cover body, the cover member being integrally attached to the locking member.

2. The lid unit according to claim 1, wherein the cover member is attached to the locking member via a fixing mechanism.

3. The lid unit according to claim 1, wherein the pair of support arms protrude from the cover body in a state of being located on both sides across the first hinge bearing portion, and the shaft holes are provided.

4. The lid unit according to claim 1, wherein the pair of support arms protrude from the cover body in a state of being located on both sides across the second hinge bearing portion and the third hinge bearing portion, and the shaft holes are provided.

5. The lid unit according to claim 1, wherein the cover member has the shaft holes for the hinge shaft to penetrate in a direction of an axis of rotation in the pair of support arms, and the cover member is rotatably attached together with the locking member.

6. The lid unit according to claim 2, wherein the second hinge portion has: a first hinge bearing portion provided to either one of the locking member or the lid body; a second hinge bearing portion and a third hinge bearing portion provided to the other one of the locking member or the lid body; and a hinge shaft provided in a state where the first hinge bearing portion is located between the second hinge bearing portion and the third hinge bearing portion, in a state where the hinge shaft penetrates shaft holes provided in the first hinge bearing portion, the second hinge bearing portion and the third hinge bearing portion in a direction of an axis of rotation. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ a hinge shaft which is installed in a state of passing through a shaft hole provided in the first hinge bearing portion, the second hinge bearing portion, and the third hinge bearing portion in a rotational axis direction, in a state where the first hinge bearing portion is positioned between the second hinge bearing portion and the third hinge bearing portion, the pair of support arms protrude from the cover main body in a manner of being positioned on both sides across the first hinge bearing portion, the fixing mechanism fixes the pair of support arms to the first hinge bearing portion.

7. The cover unit according to claim 2, wherein the second hinge portion has: a first hinge bearing portion provided on either one of the locking member or the cover main body; a second hinge bearing portion and a third hinge bearing portion provided on the other one of the locking member or the cover main body; and a hinge shaft which is installed in a state of passing through a shaft hole provided in the first hinge bearing portion, the second hinge bearing portion, and the third hinge bearing portion in a rotational axis direction, in a state where the first hinge bearing portion is positioned between the second hinge bearing portion and the third hinge bearing portion, the pair of support arms protrude from the cover main body in a manner of being positioned on both sides across the second hinge bearing portion and the third hinge bearing portion, the fixing mechanism fixes the pair of support arms to the second hinge bearing portion and the third hinge bearing portion.

8. The cover unit according to any one of claims 1 to 7, wherein the cover member is made of metal.

9. A container with a lid, characterized in that provided with: the cover unit according to any one of claims 1 to 8; and a container main body on which the cover unit is mounted.

10. The container with a cover according to claim 9, wherein the container main body has a vacuum heat-insulating structure.

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