JP7020861B2 - Container with lid - Google Patents

Description

The present invention relates to a container with a lid.

For example, there is a container with a lid that has heat and cold insulation functions by a container body having a vacuum heat insulating structure (see, for example, Patent Documents 1 and 2). In such a container with a lid, a structure is adopted in which an inner lid and an outer lid are used to seal the opening provided in the container body.

Specifically, the container with a lid has a container body having an opening at the top, an inner lid that closes the opening while being fitted into the inside of the container body from the opening, and a state of being attached to the inner lid. It is equipped with a waterproof packing that seals between the container body and the inner lid, and an outer lid that is screwed onto the container body with the opening covered from the outside. Further, the outer lid is in contact with the inner lid when it is attached to the container body, thereby restricting the movement of the inner lid to the upper side.

Japanese Unexamined Patent Publication No. 2013-22703 Japanese Unexamined Patent Publication No. 2013-220173

However, in a conventional container with a lid, for example, when a high-temperature content is put inside the container body, or when the content inside the container body rots and gas is generated, the container is sealed by the inner lid and the outer lid. As the pressure inside the container body rises (becomes positive pressure), the inner lid is pressed against the outer lid. At this time, it may be difficult to turn the outer lid in the direction of removing the outer lid due to an increase in the fastening force due to screwing between the container body and the outer lid. In addition, when the outer lid was removed, the pressure inside the container body was released at once, and a loud noise was sometimes heard. Further, when the outer lid is removed, the pressure inside the container body is released, so that the inner lid and the outer lid may pop out upward.

The present invention has been proposed in view of such conventional circumstances, and is a container with a lid that makes it possible to easily and safely remove the lid while preventing the pressure inside the container body from rising. The purpose is to provide.

In order to achieve the above object, the present invention provides the following means.
[1] A container body having an opening at the top and a container body
A lid that opens and closes the opening is provided.
The lid has an outer lid that can be detachably attached to the outer peripheral portion of the container body by screwing .
An inner plug located inside the outer lid and fitted into the inside of the container body from the opening.
A sealing member located on the outer peripheral portion of the inner plug and sealing between the container body and the inner plug.
It is located on the lower surface of the inner plug and has a pressure adjusting unit for adjusting the pressure inside the container body.
The inner plug is rotatably attached to the first plug body attached to the lower surface portion of the outer lid and the lower surface center portion of the first plug body facing the lower surface of the first plug body. It has a second plug and
The pressure adjusting portion includes an elastic member provided with a degassing hole that communicates with the inside of the container body, and a contact portion that closes the degassing hole in a state of being in contact with one end side of the degassing hole. death,
The sealing member is attached to the outer peripheral portion of the second plug body, and is attached to the outer peripheral portion.
The elastic member is a container with a lid, which is attached to a mounting hole penetrating the central portion of the second plug .
[2] When the lid body is attached to the container body, the inner plug is fitted into the inside of the container body from the opening by covering the container body with the outer lid, and the seal member is the container. It will be in contact with the inside of the main body
From this state, by rotating the lid body in the direction of being screwed with respect to the container body, the frictional force of the sealing member in contact with the inside of the container body causes the second plug to the container body. As well as blocking the rotation of the body
[1] The first plug body rotates with respect to the second plug body together with the outer lid, so that the second plug body moves downward without rotating. A container with a lid as described in.
[3] When the lid is removed from the container body, the seal is in contact with the inside of the container body by rotating the lid in a direction opposite to the direction in which the lid is screwed with respect to the container body. The frictional force of the member prevents the second plug from rotating with respect to the container body, and at the same time,
[2] The first plug body rotates with respect to the second plug body together with the outer lid, so that the second plug body moves upward without rotating. A container with a lid as described in.
[ 4 ] When the pressure inside the container body rises above a certain level, a part of the elastic member is elastically deformed and a gap is formed between the elastic member and the contact portion, so that the degassing hole is opened. The container with a lid according to any one of the above [1] to [3] .
[ 5 ] The lid according to any one of the above [1] to [4] , wherein the second plug is detachably attached to the first plug. Container .
[ 6 ] The container with a lid according to any one of the above [ 1 ] to [5], wherein the first plug is detachably attached to the outer lid.
[7] The pressure adjusting unit has an intake hole penetrating the second plug body.
The elastic member has a valve body that is located on the lower surface side of the second plug body and opens and closes the intake hole.
Any one of the above [ 1 ] to [6], wherein the intake hole is opened by elastic deformation of the valve body when the pressure in the container body drops below a certain level. Container with lid as described in.
[8] The container with a lid according to any one of the above [1] to [7], wherein the container body has a vacuum heat insulating structure.

As described above, according to the present invention, it is possible to provide a container with a lid capable of easily and safely removing the lid while preventing the pressure inside the container body from increasing.

It is sectional drawing which shows the structure of the container with a lid which concerns on 1st Embodiment of this invention. FIG. 3 is an exploded perspective view of the lid body of the container with a lid shown in FIG. 1 as viewed from above. FIG. 3 is an exploded perspective view of the lid body of the container with a lid shown in FIG. 1 as viewed from below. FIG. 3 is an enlarged cross-sectional view showing a pressure adjusting portion of the lid shown in FIG. 1. It is sectional drawing which shows another structural example in the pressure adjustment part of the lid shown in FIG. It is sectional drawing which shows another structural example in the pressure adjustment part of the lid shown in FIG. It is sectional drawing which shows the structure of the container with a lid which concerns on 2nd Embodiment of this invention. FIG. 7 is an exploded perspective view of the lid body of the container with a lid shown in FIG. 7 as viewed from above. FIG. 7 is an exploded perspective view of the lid body of the container with a lid shown in FIG. 7 as viewed from below. FIG. 3 is an enlarged cross-sectional view showing a pressure adjusting portion of the lid shown in FIG. 7.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First Embodiment)
First, as a first embodiment of the present invention, for example, the container with a lid 1A shown in FIGS. 1 to 4 will be described.
Note that FIG. 1 is a cross-sectional view showing the configuration of the container with a lid 1A. FIG. 2 is an exploded perspective view of the lid 3A included in the container 1A with a lid as viewed from above. FIG. 3 is an exploded perspective view of the lid 3A included in the container 1A with a lid as viewed from below. FIG. 4 is an enlarged cross-sectional view showing the pressure adjusting portion 26A of the lid 3A.

As shown in FIG. 1, the container 1A with a lid of the present embodiment includes a container body 2 having a vacuum heat insulating structure and a lid 3A for opening and closing an opening 2a provided in the upper part of the container body 2. .. The external shape of the container 1A with a lid is not particularly limited. For example, the container 1A with a lid of the present embodiment has a substantially cylindrical appearance shape as a whole.

The container body 2 has a bottomed cylindrical outer container 4 and an inner container 5 made of, for example, stainless steel, and the inner container 5 is housed inside the outer container 4 and the mouth portions of the inner container 5 are joined to each other. It is composed of structural containers. Further, a vacuum heat insulating layer 6 is provided between the outer container 4 and the inner container 5. The vacuum heat insulating layer 6 can be formed, for example, by closing a degassing port (not shown) provided in the center of the bottom surface of the outer container 4 in a chamber decompressed (evacuated) to a high vacuum. can. The outer peripheral surface of the container body 2 may be painted or printed.

The container body 2 has a substantially circular bottom surface portion 2b, a body portion 2c that stands up substantially in a cylindrical shape from the outer periphery of the bottom surface portion 2b, and a substantially cylindrical mouth neck portion 2d whose diameter is reduced on the upper side of the body portion 2c. And have. The upper end of the mouth neck 2d forms a circular opening 2a. Further, on the inner peripheral surface between the mouth neck portion 2d and the body portion 2c, a ring-shaped overhanging portion 7 is provided so as to project in the radial direction over the entire circumference.

As shown in FIGS. 1 to 4, the lid 3A has an outer lid 8 detachably attached to the mouth neck (outer peripheral portion) 2d of the container body 2 and an opening located inside the outer lid 8. It is provided with an inner plug 9 that is fitted into the inside of the container body 2 from 2a.

The outer lid 8 is made of a heat-resistant resin such as polypropylene. The outer lid 8 has a substantially circular top wall portion 8a and an outer wall portion 8b that descends from the periphery of the top wall portion 8a in a substantially cylindrical shape.

The outer lid 8 is attached to the mouth neck 2d of the container body 2 by screwing while covering the opening 2a of the container body 2 from the outside. Therefore, a female screw portion 10 is provided on the inner peripheral surface of the outer wall portion 8b. On the other hand, a male screw portion 11 screwed with the female screw portion 10 is provided on the outer peripheral surface of the mouth neck portion 2d. As a result, the outer lid 8 is detachably attached to the mouth neck (outer peripheral portion) 2d of the container body 2 by screwing the female screw portion 10 and the male screw portion 11.

On the outer peripheral surface of the outer wall portion 8b, a plurality of corner portions 8c to prevent slipping are provided side by side in the circumferential direction. The shape of the non-slip is not limited to the one provided with such a plurality of corner portions 8c, and can be appropriately changed or omitted.

The inner plug 9 has a first plug body 12 attached to the center of the lower surface of the top wall portion 8a (outer lid 8) and a second plug body attached to face the lower surface of the first plug body 12. It has 13 and.

The first plug 12 is made of a heat-resistant resin such as polypropylene. The first plug body 12 has a substantially circular bottom wall portion 12a and a peripheral wall portion 12b rising from the periphery of the bottom wall portion 12a in a substantially cylindrical shape.

A first plug 12 (inner plug 9) is detachably attached between the outer lid 8 and the first plug 12 at the center of the lower surface of the top wall portion 8a (inside the outer lid 8). A first attachment / detachment mechanism 14 is provided.

The first attachment / detachment mechanism 14 has an inner contact portion 8d provided on the inner peripheral surface of the outer wall portion 8b, and a retaining packing 15 attached to the peripheral wall portion (outer peripheral portion) 12b of the first plug body 12. is doing.

The inner contact portion 8d is provided so as to project in the diameter reduction direction from the inner peripheral surface on the upper end side of the outer wall portion 8b over the entire circumference. The inner contact portion 8d is provided with a plurality of slits 8e (two in the present embodiment) that cut out the inner contact portion 8e in the axial direction (height direction) so as to be arranged at equal intervals in the circumferential direction. ..

The retaining packing 15 is a ring-shaped sealing member, and is made of an elastic body such as a heat-resistant rubber such as silicone rubber or an elastomer. Further, a ring-shaped elastic flange portion 15a is provided on the outer peripheral surface of the retaining packing 15 so as to project in the diameter-expanding direction over the entire circumference.

On the other hand, on the outer peripheral surface of the first plug body 12, a ring-shaped first upper flange portion 16a and a second upper flange portion 16b are provided so as to project in the diameter expansion direction over the entire circumference. The first upper flange portion 16a is provided so as to project from the upper end of the peripheral wall portion 12b. The second upper flange portion 16b is provided so as to project from below the first upper flange portion 16a.

A ring-shaped upper groove portion 17 is provided over the entire circumference between the first upper flange portion 16a and the second upper flange portion 16b. The retaining packing 15 is attached to the peripheral wall portion (outer peripheral portion) 12b of the first plug body 12 by being fitted into the upper groove portion 17. Further, in a state where the retaining packing 15 is fitted to the upper groove portion 17, the elastic flange portion 15a is in a state of protruding outward from the first upper flange portion 16a and the second upper flange portion 16b.

On the other hand, the second upper flange portion 16b is provided with a notch portion 18 for facilitating the removal of the retaining packing 15 from the upper groove portion 17. The retaining packing 15 can be removed from the upper groove portion 17 (first plug body 12) by elastically deforming (pulling and stretching) itself from the position where the notch portion 18 is formed. As a result, the first plug 12 and the retaining packing 15 can be cleaned separately, and the space between the first plug 12 and the retaining packing 15 can be kept hygienic.

In the first attachment / detachment mechanism 14, by fitting the first plug 12 inside the outer lid 8, the elastic flange portion 15a of the retaining packing 15 is elastically deformed and covers the entire circumference of the inner contact portion 8d. It will be in close contact with each other. As a result, the first plug 12 fitted inside the outer lid 8 is in a state of being prevented from coming off, and the first plug 12 (middle) is placed in the center of the lower surface (inside of the outer lid 8) of the top wall portion 8a. A stopper 9) can be attached.

On the other hand, in the first attachment / detachment mechanism 14, the lower surface of the top wall portion 8a is pulled out from the inside of the outer lid 8 against the elastic force of the elastic flange portion 15a (removal packing 15a). The first plug 12 (middle plug 9) can be removed from the central portion (inside the outer lid 8).

The second plug 13 is made of a heat-resistant resin such as polypropylene. The second plug 13 has a size corresponding to the bottom wall portion 12a of the first plug 12, and is formed in a substantially disk shape as a whole.

Between the first plug body 12 and the second plug body 13, the second plug body 13 can be freely attached and detached at the center of the lower surface of the bottom wall portion 12a (first plug body 12) in a rotatable state. A second attachment / detachment mechanism 19 for attaching to the body is provided.

The second attachment / detachment mechanism 19 is a locking portion 20 provided on either one of the lower surface of the bottom wall portion 12a and the upper surface of the second plug 13 (the lower surface of the bottom wall portion 12a in the present embodiment). And the locked portion 21 provided on any one of the other (the upper surface of the second plug 13 in the present embodiment).

The locking portion 20 has a plurality of (four in this embodiment) hook pieces 20a on the lower surface of the bottom wall portion 12a. The plurality of hook pieces 20a descend from a position surrounding the center of the bottom wall portion 12a (mounting hole 27 described later) in a substantially cylindrical shape as a whole, and are axially oriented between the hook pieces 20a adjacent to each other. By notching in the height direction), they are provided side by side at equal intervals in the circumferential direction. As a result, the plurality of hook pieces 20a are extended downward from the lower surface of the bottom wall portion 12a, and the tip end side is elastically (deflected) deformable in the radial direction. Further, a claw portion 20b is provided on the outer peripheral surface of each hook piece 20a on the tip end (lower end) side so as to project in the diameter expansion direction.

The locked portion 21 has an inner cylinder portion 21a on the upper surface of the second plug body 13. The inner cylinder portion 21a is formed so as to rise substantially in a cylindrical shape from a position surrounding the central portion (protruding portion 30a described later) of the second plug body 13. Further, a ring-shaped inner flange portion 21b is provided on the inner peripheral surface on the tip end (upper end) side of the inner cylinder portion 21a so as to project in the diameter reduction direction over the entire circumference.

In the second attachment / detachment mechanism 19, the claw portion 20b of each hook piece 20a is attached to the inner flange portion 21b by fitting a plurality of hook pieces 20a inside the inner cylinder portion 21a while elastically deforming each hook piece 20a. Locked. As a result, the second plug 13 can be rotatably attached to the center of the lower surface of the bottom wall portion 12a (first plug 12).

On the other hand, in the second attachment / detachment mechanism 19, by pulling out a plurality of hook pieces 20a from the inside of the inner cylinder portion 21a, each hook piece 20a is elastically deformed and the claw portion 20b is locked to the inner flange portion 21b. To cancel. As a result, the second plug 13 can be removed from the center of the lower surface of the bottom wall portion 12a (first plug 12).

It should be noted that between the bottom wall portion 12a and the peripheral wall portion 12b of the first plug body 12, the second plug body 13 can be easily removed from the bottom wall portion 12a (lower surface) of the first plug body 12. The removal recess 12c is provided.

In this embodiment, the locking portion 20 is provided on the lower surface side of the bottom wall portion 12a (first plug body 12) described above, and the locked portion 21 is provided on the upper surface side of the second plug body 13. Although it has a configuration opposite to that, that is, a locking portion 20 is provided on the upper surface side of the second plug body 13, and is engaged on the lower surface side of the bottom wall portion 12a (first plug body 12). It is also possible to have a configuration in which the stop portion 21 is provided. Further, the locking portion 20 and the locked portion 21 are not limited to the configuration in which the claw portion 20b of the hook piece 20a described above is locked to the inner flange portion 21b of the inner cylinder portion 21a, and the locking portion 20 and the locked portion 21 have a mutual locking structure. It can be changed as appropriate.

A gap is formed between the first plug 12 and the second plug 13 to form a constant gap between the lower surface of the first plug 12 and the upper surface of the second plug 13. A mechanism 22 is provided. The gap forming mechanism 22 has a stepped surface 23 provided on either one of the lower surface of the first plug body 12 and the upper surface of the second plug body 13 (lower surface of the bottom wall portion 12a in the present embodiment). , Whichever is the other (in the present embodiment, the upper surface of the second plug 13) is provided with a plurality of (eight in the present embodiment) contact convex portions 24.

The stepped surface 23 is provided so as to project in a ring shape from a position surrounding the inner cylinder portion 21a on the lower surface of the bottom wall portion 12a. Further, the tip (lower end) of the stepped surface 23 forms a flat surface.

The plurality of contact convex portions 24 are provided so as to project from a position surrounding the periphery of the plurality of hook pieces 20a on the upper surface of the second plug 13 at a height corresponding to the gap. Further, the plurality of contact convex portions 24 are extended in the radial direction and are provided side by side at equal intervals in the circumferential direction.

In the gap forming mechanism 22, a plurality of contact convex portions 24 are brought into contact with the stepped surface 23, so that the lower surface of the first plug body 12 and the second plug are between the contact convex portions 24 adjacent to each other. A certain gap can be formed between the body 13 and the upper surface of the body 13. Further, in the gap forming mechanism 22, the sliding contact resistance between the stepped surface 23 and the plurality of contact convex portions 24 when the second plug body 13 attached to the lower surface of the first plug body 12 rotates. Can be lowered.

In this embodiment, the stepped surface 23 is provided on the lower surface side of the bottom wall portion 12a (first plug body 12) described above, and the contact convex portion 24 is provided on the upper surface side of the second plug body 13. However, the configuration is the opposite of that, that is, the stepped surface 23 is provided on the upper surface side of the second plug body 13, and the contact convex portion is provided on the lower surface side of the bottom wall portion 12a (first plug body 12). It is also possible to have a configuration in which 24 is provided. Further, the gap forming mechanism 22 is not limited to the configuration in which the contact convex portion 24 is in contact with the stepped surface 23 described above, and can be appropriately changed.

A waterproof packing 25 is detachably attached to the outer peripheral portion of the second plug body 13 (middle plug 9). The waterproof packing 25 is a ring-shaped sealing member that seals between the container body 2 and the inner plug 9, and is made of an elastic body such as a heat-resistant rubber such as silicone rubber or an elastomer.

On the lower surface of the second plug 13, a diameter-reduced portion 13a whose diameter is reduced from the outer shape of the second plug 13 and a diameter-reduced portion 13a projecting from the lower end side of the diameter-reduced portion 13a in the diameter-expanding direction over the entire circumference. A ring-shaped lower flange portion 13b and a ring-shaped lower groove portion 13c located above the lower flange portion 13b are provided.

On the other hand, on the inner peripheral surface of the waterproof packing 25, a ring-shaped fitting convex portion 25a fitted to the lower groove portion 13c and a ring-shaped fitting concave portion 25b to which the lower flange portion 13b is fitted are provided. Is provided.

In the waterproof packing 25, the fitting convex portion 25a is fitted into the lower groove portion 13c, and the lower flange portion 13b is fitted into the fitting recess 25b, whereby the outer peripheral portion of the second plug 13 is fitted. It is attached to.

On the other hand, the second plug 13 is provided with a notch 13d for making it easy to remove the waterproof packing 25 from the outer peripheral portion. The waterproof packing 25 can be removed from the outer peripheral portion of the second plug 13 by elastically deforming (pulling and stretching) itself from the position where the cutout portion 13d is formed. As a result, the second plug 13 and the waterproof packing 25 can be cleaned separately, and the space between the second plug 13 and the waterproof packing 25 can be kept hygienic.

An elastic flange portion 25c that comes into contact with the overhanging portion 7 when the inner plug 9 is fitted inside the container body 2 (mouth neck portion 2d) is provided on the outer peripheral portion of the waterproof packing 25. The elastic flange portion 25c has a shape protruding downward from the upper end of the outer peripheral surface of the waterproof packing 25 while being curved downward.

When the inner plug 9 was fitted inside the container body 2 (mouth neck 2d), the waterproof packing 25 adhered to the overhanging portion 7 over the entire circumference while the elastic flange portion 25c was elastically deformed. It becomes a state. As a result, the space between the container body 2 and the inner plug 9 can be sealed by the waterproof packing 25.

By the way, the container 1A with a lid of the present embodiment is located at the center of the lower surface of the inner plug 9 and includes a pressure adjusting portion 26A for adjusting the pressure in the container main body 2.

The pressure adjusting portion 26A has a circular mounting hole 27 penetrating the central portion of the second plug body 13, and has a configuration in which the elastic member 28 is detachably attached to the mounting hole 27. Further, a degassing hole 29 is provided through the central portion of the elastic member 28. The pressure adjusting unit 26A is configured to communicate with the inside of the container body 2 by the degassing hole 29.

On the other hand, the pressure adjusting portion 26A has a contact portion 30 that closes the degassing hole 29 in a state of being in contact with one end (upper end) side of the degassing hole 29. The abutting portion 30 is composed of a protruding portion 30a projecting downward from the center of the bottom wall portion 12a of the first plug body 12 in a substantially spherical shape.

Correspondingly, a seal portion 31 closed by the protruding portion 30a is provided on one end (upper end) side of the degassing hole 29. The seal portion 31 is composed of a part of the elastic member 28 protruding above the mounting hole 27, is continuously formed in the degassing hole 29, and has a trumpet whose diameter is gradually expanded toward the tip (upper end) side thereof. It has a shape. The seal portion 31 is in a state of being in close contact with the periphery of the protruding portion 30a over the entire circumference while the tip side thereof is elastically deformed.

The elastic member 28 has a ring-shaped mounting flange portion 32 that protrudes downward from the mounting hole 27 and protrudes in the radial direction from the other end (lower end) of the degassing hole 29 over the entire circumference. There is. The mounting flange portion 32 is fitted inside a mounting recess 33 provided in the center of the lower surface of the second plug body 13.

The elastic member 28 can be removed from the mounting hole 27 by pulling the mounting flange portion 32 downward. As a result, the second plug 13 and the elastic member 28 can be cleaned separately, and the space between the second plug 13 and the elastic member 28 can be kept hygienic.

In the container 1A with a lid of the present embodiment having the above configuration, when the lid 3A is attached to the container body 2, the opening is first covered with the outer lid 8 on the mouth neck 2d of the container body 2. The inner plug 9 is fitted into the inside of the container body 2 from 2a, and the waterproof packing 25 is in contact with the overhanging portion 7.

Next, from this state, when the outer lid 8 is rotated in the direction (clockwise direction) in which the female screw portion 10 on the lid 3A side is screwed with respect to the male screw portion 11 on the container body 2 side, the outer lid 8 overhangs. The frictional force of the waterproof packing 25 in contact with the portion 7 prevents the rotation of the second plug 13 with respect to the container body 2.

On the other hand, the first plug 12 is rotatable with respect to the second plug 13 whose rotation is blocked. Therefore, the first plug body 12 rotates with respect to the second plug body 13 together with the outer lid 8. Therefore, by rotating the outer lid 8 clockwise with respect to the container body 2, the second plug 13 to which the waterproof packing 25 is attached moves downward without rotating. As a result, when the lid 3A is attached to the container body 2, the waterproof packing 25 that has come into contact with the overhanging portion 7 is pushed downward without rotating, and the entire circumference of the overhanging portion 7 is not twisted. It becomes a state of being in close contact with each other almost uniformly.

Further, when the lid 3A is attached to the container body 2, only the outer lid 8 can be rotated clockwise without rotating the waterproof packing 25 with respect to the container body 2, so that the outer lid 8 can be rotated. The operation resistance at the time of operation can be reduced.

Further, in the container 1A with a lid of the present embodiment, when the lid 3A is attached to the container body 2, the protruding portion 30a (contact portion 30) is brought into contact with the seal portion 31 of the elastic member 28. , One end (upper end) side of the degassing hole 29 is closed.

On the other hand, in the container 1A with a lid of the present embodiment, when the lid 3A is removed from the container body 2, the female screw portion 10 on the lid 3A side is first screwed into the male screw portion 11 on the container body 2 side. The outer lid 8 is rotated in the direction opposite to the direction (counterclockwise).

At this time, the first plug body 12 rotates with respect to the second plug body 13 together with the outer lid 8. Therefore, by rotating the outer lid 8 counterclockwise with respect to the container body 2, the second plug 13 to which the waterproof packing 25 is attached moves upward without rotating. As a result, when the lid 3A is removed from the container body 2, the waterproof packing 25 that is in close contact with the overhanging portion 7 moves upward without rotating and is in close contact with the overhanging portion 7 without twisting. The state is released.

Further, in the container 1A with a lid of the present embodiment, when the lid 3A is removed from the container body 2, the contact of the protruding portion 30a (contact portion 30) with the seal portion 31 is released, so that the degassing hole 29 is released. Is in an open state. As a result, even when the pressure inside the container body 2 drops (becomes a negative pressure), when the lid 3A is removed from the container body 2, outside air is introduced through the degassing hole 29, so that the container body 2 The pressure inside is the same as the pressure outside (atmospheric pressure). Therefore, the lid 3A can be easily removed from the container body 2 without the inner plug 9 being pulled inward of the container body 2.

In the container 1A with a lid of the present embodiment, when the pressure inside the container body 2 rises above a certain level (becomes a positive pressure) in a state where the lid 3A is attached to the container body 2, the elastic member 28 The seal portion 31 is elastically deformed and a gap is formed between the seal portion 31 and the protruding portion 30a (contact portion 30), so that the degassing hole 29 is opened. As a result, the pressure inside the container body 2 can be released to the outside through the gap formed by the gap forming mechanism 22 from the degassing hole 29.

On the other hand, after the pressure in the container body 2 is released, the sealing portion 31 elastically returns, and the sealing portion 31 is in close contact with the periphery of the protruding portion 30a over the entire circumference. As a result, the degassing hole 29 is closed again.

Therefore, in the container 1A with a lid of the present embodiment, as the pressure inside the container body 2 rises, the container body 2 (male screw portion 11) and the outer lid 8 (female screw portion 10) are fastened by screwing. The increased force does not make it difficult to turn the outer lid 8 in the removing direction, and the lid 3A can be easily removed from the container body 2.

Further, in the container 1A with a lid of the present embodiment, when the lid 3A is removed from the container body 2, it is possible to prevent the pressure inside the container body 2 from being released at once and making a loud noise.

Further, in the container 1A with a lid of the present embodiment, when the lid 3A is removed from the container body 2, it is possible to prevent the lid 3A from popping out upward due to the increased pressure in the container body 2. Is.

When the pressure inside the container body 2 rises (becomes a positive pressure), for example, when a high-temperature content is put inside the container body 2, or the content inside the container body 2 is spoiled. For example, when gas is generated.

As described above, in the container 1A with a lid of the present embodiment, the lid 3A can be easily and safely removed while preventing the pressure inside the container body 2 from increasing. Further, it is possible to improve the operability when opening and closing the lid 3A while maintaining good airtightness by the waterproof packing 25. Therefore, in the container with a lid 1A provided with such a lid 3A, it is possible to further improve the usability.

The container 1A with a lid of the present embodiment is not necessarily limited to the configuration of the pressure adjusting unit 26A included in the lid body 3A described above, and is, for example, the pressure adjusting unit 26B shown in FIG. 5 or the pressure adjusting unit 26B shown in FIG. It is also possible to have a configuration such as the pressure adjusting unit 26C. Note that FIG. 5 is a cross-sectional view showing the configuration of the pressure adjusting unit 26B. FIG. 6 is a cross-sectional view showing the configuration of the pressure adjusting unit 26C.

Of these, the pressure adjusting portion 26B shown in FIG. 5 is provided with a valve body 35 for opening and closing the intake hole 34 provided in the second plug body 13 instead of the mounting flange portion 32 provided in the elastic member 28. It has a structure that has been set.

The intake hole 34 is located around the mounting hole 27 of the second plug body 13 and is provided so as to penetrate the second plug body 13. Further, although the intake hole 34 is continuously formed in the mounting hole 27, it can be formed at a position away from the mounting hole 27.

The valve body 35 is projected downward from the mounting hole 27, and is projected from the other end (lower end) of the degassing hole 29 in the diameter-expanding direction over the entire circumference, and the tip end side thereof is the second plug body. It has a shape curved toward the lower surface side of 13. As a result, the valve body 35 is in a state of being in close contact with the circumference of the intake hole 34 over the entire circumference while the tip side thereof is elastically deformed.

That is, in the pressure adjusting portion 26B, when the elastic member 28 is attached to the mounting hole 27, the tip end side of the valve body 35 comes into contact with the lower surface of the second plug body 13, so that the intake hole 34 is closed. It is in the state of being done.

In the pressure adjusting unit 26B, when the pressure inside the container body 2 drops below a certain level (becomes a negative pressure), the valve body 35 elastically deforms, and a gap is created between the pressure adjusting unit 26B and the lower surface of the second plug body 13. By being formed, the intake hole 34 is opened. As a result, the outside air is introduced through the intake hole 34, so that it is possible to alleviate the pressure drop in the container body 2. Therefore, when the lid 3A is removed from the container body 2, the lid 3A can be easily removed from the container body 2 without the inner plug 9 being pulled inward of the container body 2.

As a case where the pressure inside the container body 2 decreases (becomes a negative pressure), for example, when a high-temperature content is put inside the container body 2 and then the content cools down. can.

On the other hand, the pressure adjusting portion 26C shown in FIG. 6 is the central portion (plurality of hook pieces) of the bottom wall portion 12a as the contact portion 30 in place of the above-mentioned protruding portion 30a in the pressure adjusting portion 26B shown in FIG. The structure is such that a flat portion 30b is provided by flattening (the inside of 20a).

The seal portion 31 is in a state of being in close contact with the flat portion 20b over the entire circumference while the tip side thereof is elastically deformed. The seal portion 31 shown in FIG. 6 is formed in a wider-mouth trumpet shape than the seal portion 31 shown in FIG.

In the pressure adjusting unit 26C, similarly to the pressure adjusting unit 26A, when the pressure in the container body 2 rises above a certain level (becomes a positive pressure), the seal portion 31 is elastically deformed and the flat portion 30b (this). By forming a gap between the contact portion 30) and the contact portion 30), the degassing hole 29 is opened. This makes it possible to release the pressure inside the container body 2 to the outside through the gap formed by the gap forming mechanism 22 from the degassing hole 29.

(Second embodiment)
Next, as a second embodiment of the present invention, for example, the container with a lid 1B shown in FIGS. 7 to 10 will be described.
Note that FIG. 7 is a cross-sectional view showing the configuration of the container with a lid 1B. FIG. 8 is an exploded perspective view of the lid 3B included in the container 1B with a lid as viewed from above. FIG. 9 is an exploded perspective view of the lid 3B included in the container 1B with a lid as viewed from below. FIG. 10 is an enlarged cross-sectional view showing the pressure adjusting portion 26A of the lid body 3B. Further, in the following description, the same parts as those of the container with a lid 1A will be omitted and the same reference numerals will be given in the drawings.

As shown in FIGS. 7 to 10, the container 1B with a lid of the present embodiment includes a container body 2 and a lid 3B for opening and closing the opening 2a of the container body 2.

The lid 3B has a structure in which a heat insulating material 36 such as foamed polypropylene (EPP) is arranged inside the first plug 12. Further, it has basically the same configuration as the lid 3A except that the first attachment / detachment mechanism 14A and the second attachment / detachment mechanism 19A, which are different from the lid 3A, are provided.

Specifically, the first plug 12 has a member that forms a substantially disk-shaped top wall portion 12d that closes the upper surface of the peripheral wall portion 12b, in addition to the member that forms the bottom wall portion 12a and the peripheral wall portion 12b. Have. The first plug 12 has a structure in which a heat insulating material 36 such as styrofoam is arranged inside the top wall portion 12d by integrally attaching the top wall portion 12d to the upper end portion of the peripheral wall portion 12b by welding or the like. The inside of the first plug 12 may be configured such that air (cavity) is arranged as a heat insulating layer.

The first attachment / detachment mechanism 14A has an inner wall portion 8f that descends substantially in a cylindrical shape from the lower surface of the top wall portion 8a instead of the inner contact portion 8d.

The inner wall portion 8f has a shorter dimension in the height direction than the outer wall portion 8b, and is arranged concentrically with the outer wall portion 8b. Further, the inner wall portion 8f is provided with a plurality of slits 8g (two in the present embodiment) that cut out the inner wall portion 8f in the axial direction (height direction) so as to be arranged at equal intervals in the circumferential direction.

In the first attachment / detachment mechanism 14A, by fitting the first plug 12 inside the inner wall portion 8f, the elastic flange portion 15a of the retaining packing 15 is elastically deformed and all around the inner peripheral surface of the inner wall portion 8f. It will be in close contact with each other. As a result, the first plug body 12 fitted inside the inner wall portion 8f is in a state of being prevented from coming off, and the first plug body 12 (middle) is placed in the lower center portion (inside of the outer lid 8) of the top wall portion 8a. A stopper 9) can be attached.

On the other hand, in the first attachment / detachment mechanism 14A, the lower surface of the top wall portion 8a is pulled out from the inside of the inner wall portion 8f against the elastic force of the elastic flange portion 15a (removal packing 15a). The first plug body 12 (inner plug 9) can be removed from the central portion (inside of the outer lid 8).

The second attachment / detachment mechanism 19A has a configuration in which a locking portion 20 is provided on the upper surface side of the second plug body 13 and a locked portion 21 is provided on the lower surface side of the bottom wall portion 12a (first plug body 12). It has become.

The locking portion 20 has a plurality of (four in this embodiment) hook pieces 20c on the upper surface of the second plug 13. The plurality of hook pieces 20c rise from a position surrounding the center of the second plug 13 (mounting hole 27) in a substantially cylindrical shape as a whole, and are axially (high) between the hook pieces 20c adjacent to each other. By notching in the vertical direction), they are provided side by side at equal intervals in the circumferential direction. As a result, the plurality of hook pieces 20c are extended upward from the upper surface of the second plug 13, and the tip end side can be elastically (deflected) deformed in the radial direction. Further, a claw portion 20d is provided on the outer peripheral surface of each hook piece 20c on the tip end (upper end) side so as to project in the diameter expansion direction.

The locked portion 21 has an inner cylinder portion 21c on the lower surface of the bottom wall portion 12a (first plug body 12). The inner cylinder portion 21c is formed so as to fall down in a substantially cylindrical shape from a position surrounding the central portion (protruding portion 30a) of the bottom wall portion 12a. Further, a ring-shaped inner flange portion 21d is provided so as to project in the diameter reduction direction on a part of the inner peripheral surface on the tip end (lower end) side of the inner cylinder portion 21c.

In the second attachment / detachment mechanism 19A, the claw portion 20d of each hook piece 20c is fitted to the inner flange portion 21d by fitting a plurality of hook pieces 20c inside the inner cylinder portion 21c while elastically deforming each hook piece 20c. Locked. As a result, the second plug 13 can be rotatably attached to the center of the lower surface of the bottom wall portion 12a (first plug 12).

On the other hand, in the second attachment / detachment mechanism 19A, by pulling out a plurality of hook pieces 20c from the inside of the inner cylinder portion 21c, each hook piece 20c is elastically deformed and the claw portion 20d is locked to the inner flange portion 21d. To cancel. As a result, the second plug 13 can be removed from the center of the lower surface of the bottom wall portion 12a (first plug 12).

Since the container 1B with a lid of the present embodiment having the above configuration includes the pressure adjusting unit 26A described above in the same manner as the container 1A with a lid, the same effect as that of the container 1A with a lid can be obtained. It is possible.

That is, in the container 1B with a lid of the present embodiment, as the pressure inside the container body 2 rises, the container body 2 (male screw portion 11) and the outer lid 8 (female screw portion 10) are fastened by screwing. The increased force does not make it difficult to turn the outer lid 8 in the removing direction, and the lid 3B can be easily removed from the container body 2.

Further, in the container 1B with a lid of the present embodiment, when the lid 3B is removed from the container body 2, it is possible to prevent the pressure inside the container body 2 from being released at once and making a loud noise. Further, in the container 1B with a lid of the present embodiment, when the lid 3B is removed from the container body 2, it is possible to prevent the lid 3B from popping out upward due to the increased pressure in the container body 2. Is.

As described above, in the container 1B with a lid of the present embodiment, the lid 3B can be easily and safely removed while preventing the pressure inside the container body 2 from increasing. Further, it is possible to improve the operability when opening and closing the lid 3B while maintaining good airtightness by the waterproof packing 25. Therefore, in the container with a lid 1B provided with such a lid 3B, it is possible to further improve the usability.

The container 1B with a lid of the present embodiment is not necessarily limited to the configuration of the pressure adjusting unit 26A included in the lid body 3B described above, and is, for example, the pressure adjusting unit 26B shown in FIG. 5 and the pressure adjusting unit 26B shown in FIG. It is also possible to have a configuration including the pressure adjusting unit 26C shown in 1.

The present invention is not necessarily limited to that of the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the present invention can be suitably applied to a container with a lid that has heat and cold insulation functions by the container body having the vacuum insulation structure described above, but the container body having an opening at the top and the opening / closing of the opening can be opened and closed. It is possible to widely apply the present invention to a container with a lid provided with a lid.

1A, 1B ... Container with lid 2 ... Container body 2a ... Opening 3A, 3B ... Lid 4 ... Outer container 5 ... Inner container 6 ... Vacuum insulation layer 7 ... Overhanging part 8 ... Outer lid 9 ... Inner plug 10 ... Female Threaded part 11 ... Male threaded part 12 ... First plug 13 ... Second plug 14, 14A ... First attachment / detachment mechanism 15 ... Retaining packing 16a ... First upper flange part 16b ... Second upper flange part 17 ... Upper groove portion 18 ... Notch portion 19, 19A ... Second attachment / detachment mechanism 20 ... Locking portion 21 ... Locked portion 22 ... Gap forming mechanism 23 ... Step surface 24 ... Contact convex portion 25 ... Water blocking packing ( Seal member) 26A, 26B, 26C ... Pressure adjusting part 27 ... Mounting hole 28 ... Elastic member 29 ... Degassing hole 30 ... Contact part 31 ... Seal part 32 ... Mounting flange part 33 ... Mounting recess 34 ... Intake hole 35 ... Valve body 36 ... Insulation material

Claims (8)

The container body with an opening at the top and
A lid that opens and closes the opening is provided.
The lid has an outer lid that can be detachably attached to the outer peripheral portion of the container body by screwing .
An inner plug located inside the outer lid and fitted into the inside of the container body from the opening.
A sealing member located on the outer peripheral portion of the inner plug and sealing between the container body and the inner plug.
It is located on the lower surface of the inner plug and has a pressure adjusting unit for adjusting the pressure inside the container body.
The inner plug is rotatably attached to the first plug body attached to the lower surface portion of the outer lid and the lower surface center portion of the first plug body facing the lower surface of the first plug body. It has a second plug and
The pressure adjusting portion includes an elastic member provided with a degassing hole that communicates with the inside of the container body, and a contact portion that closes the degassing hole in a state of being in contact with one end side of the degassing hole. death,
The sealing member is attached to the outer peripheral portion of the second plug body, and is attached to the outer peripheral portion.
The elastic member is a container with a lid, which is attached to a mounting hole penetrating the central portion of the second plug . When the lid body is attached to the container body, the inner plug is fitted into the inside of the container body from the opening by covering the container body with the outer lid, and the sealing member is inside the container body. In contact with
From this state, by rotating the lid body in the direction of being screwed with respect to the container body, the second plug body with respect to the container body is caused by the frictional force of the sealing member in contact with the inside of the container body. The rotation of the
The first aspect of the present invention is characterized in that, by rotating the first plug together with the outer lid with respect to the second plug, the second plug moves downward without rotating. The described container with a lid. When removing the lid from the container body, the friction of the sealing member in contact with the inside of the container body by rotating the lid in the direction opposite to the direction in which the lid is screwed with respect to the container body. The force prevents the rotation of the second stopper with respect to the container body, and at the same time,
2. The second aspect of the present invention is characterized in that the first plug body rotates with respect to the second plug body together with the outer lid, so that the second plug body moves upward without rotating. The described container with a lid. When the pressure inside the container body rises above a certain level, a part of the elastic member is elastically deformed and a gap is formed between the elastic member and the contact portion, so that the degassing hole is opened. The container with a lid according to any one of claims 1 to 3, wherein the container is characterized by. The container with a lid according to any one of claims 1 to 4 , wherein the second plug is detachably attached to the first plug. The container with a lid according to any one of claims 1 to 5, wherein the first stopper is detachably attached to the outer lid. The pressure adjusting unit has an intake hole penetrating the second plug body.
The elastic member has a valve body that is located on the lower surface side of the second plug body and opens and closes the intake hole.
The invention according to any one of claims 1 to 6, wherein the intake hole is opened by elastically deforming the valve body when the pressure in the container body drops below a certain level. Container with lid. The container with a lid according to any one of claims 1 to 7, wherein the container body has a vacuum heat insulating structure.

Images