JP2011246191A - Beverage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beverage container to contain a beverage in a thermal insulation state or in a cold storage state.SOLUTION: A sealing means (14) includes: a cylindrical means (26) provided protrusively from a capping means (15) while facing a mouthpiece (12a), and communicating between the internal cavity (38) and the outside; a closing means to close the leading end of the cylindrical means; and an annular seal packing (28) freely attachably/detachably provided on the circumference of the leading end of the cylindrical means (26). The closing means includes: a blocking plate part to close the cylindrical leading end of the cylindrical means (26); a through-hole (30) pierced in the blocking plate part; and a valve member (31) to freely openably close the through-hole. The valve member (31) functions as a differential pressure valve means (32).

Description

The present invention relates to a beverage container, and more particularly to a beverage container such as a portable thermos bottle that contains a beverage in a heat-retaining state or a cold-retaining state.

As shown in FIG. 5 (A), a beverage container for storing a beverage such as a portable thermos bottle in a warm or cold state is mounted on the container body 1 and the upper opening of the container body 1 and the interior of the container body. And a cap member 5 that is openable and closable with a sealing member 4 that closes the mouthpiece 2 a of the mouthpiece member 2.

Usually, the cap member 5 is pivotally connected to the back surface portion of the shoulder member 3 via a horizontal pivot 6 and between a closed position covered by the shoulder member 3 and an open position where the shoulder member 3 is opened. It is configured to be rotatable. The cap member 5 is locked by the detachable locking means 7 in the closed position. When the cap member 5 is released from the locking by pressing the operation button 8 with a fingertip, the cap member 5 is moved to the open position by the spring 9. When the cap member 5 is returned against the spring 9 after automatically opening and drinking a beverage, the cap member 5 is again locked in the closed position, and the sealing means 4 closes in close contact with the drinking mouth 2a.

By the way, after putting the cooled drink in the container main body 1, when the shoulder member 3 is attached to the container main body 1 and the cap member 2 is closed, the inside of the container main body 1 becomes airtight. At this time, the air inside the container main body 1 is cooled by the beverage, and thereby the inside of the container main body 1 is brought into a reduced pressure state, so that the sealing means 4 is adsorbed to the mouthpiece 2a. For this reason, even when the operation button 8 is pressed to open the cap member 2, the cap member 2 may not open.

On the contrary, after putting the heated beverage in the container body 1, when the shoulder member 3 was attached to the container body 1 and the cap member 2 was closed to make the inside of the container body 1 airtight, the container body 1 was heated. As the air cools together with the beverage, the inside of the container main body 1 is depressurized, so that the sealing means 4 is adsorbed by the drinking mouth 2a and makes it difficult to open the cap member 2 as in the case described above.

Therefore, in order to solve the above problem, a beverage container provided with a differential pressure valve has been proposed. As shown in FIG. 5 (B), the proposed beverage container is provided with a differential pressure valve 10 formed of an elastic material on the flat plate portion 3a of the shoulder member 3 positioned around the mouthpiece member 2. According to this, when the inside of the container main body 1 is depressurized, the differential pressure valve 10 opens the vent hole 10a and introduces the outside air, so that the internal pressure is balanced with the atmospheric pressure, and the sealing means 4 becomes the mouthpiece 2a. Can be prevented from adsorbing.

Registered Utility Model No. 3125880

In the beverage container provided with the mouthpiece member 2 as described above, it is desirable to make the diameter of the mouthpiece member 2 as large as possible from the viewpoint of ease of drinking, and accordingly, the area of the flat plate portion 3a of the shoulder member 3 Must be narrow.

However, as shown in FIG. 5, in the case of Patent Document 1 in which the differential pressure valve 10 is provided in the flat plate portion 3a, the differential pressure valve 10 and the vent hole 10a are extremely small, so that the valve function is not good. When removing the differential pressure valve 10 for cleaning, there is an inconvenience that the shoulder member 3 must always be separated from the container body 1 first. Moreover, even when the differential pressure valve 10 is mounted again after cleaning, it is very small, so that it is difficult to work, and particularly difficult for amateurs such as housewives in the home.

This invention provides the drink container which solved the said subject. In view of this, as a means, the container body includes a container main body that contains the beverage in a heat-retaining state or a cold-retained state, and a cylindrical mouthpiece member that is attached to the upper opening of the container main body and communicates with the inside of the container main body. And a freely openable and closable cap member having a sealing means for closing the mouthpiece of the mouthpiece member, and the sealing means protrudes from the cap means so as to face the mouthpiece and is internally provided. It is composed of cylindrical means that communicates the space with the outside air, closing means that closes the tip of the cylindrical means, and an annular seal packing that is detachably provided around the tip periphery of the cylindrical means, The closing means is composed of a closing plate portion that closes the distal end tubular portion of the cylindrical means, a through hole that penetrates the closing plate portion, and a valve member that closes the opening and closing freely. The member is elastic when the inside of the container body is depressurized. The hole opened by deformation, lies in that the interior of the container body is formed by constituting a differential pressure valve means for closing the hole by restoring an elastic back to atmospheric pressure.

The cylindrical means is formed so that the outer diameter is smaller than the inner diameter of the mouthpiece, and the differential pressure valve means enters the inside of the mouthpiece while the mouthpiece is closed by the seal packing. It is configured.

In a preferred embodiment of the present invention, the cylindrical means is composed of an outer cylinder member protruding from a cap means and an inner cylinder member provided with the closing plate portion, and the inner cylinder member is used as an outer cylinder member. The inner cylindrical member is formed with a protruding portion that protrudes from the distal end portion of the outer cylindrical member, and the seal packing is an inward protruding fitting that is fitted to the outer peripheral surface of the protruding portion of the inner cylindrical member. A peripheral strip and a skirt portion fitted to the outer peripheral surface of the tip portion of the outer cylinder member are integrally formed.

The inner cylinder member is formed with a flange on the outer peripheral surface of the protruding end of the protruding portion, thereby forming a circumferential groove on the outer peripheral surface of the protruding portion sandwiched between the flange and the tip of the outer cylindrical member. The seal packing is fixed so as to be immovable in the axial direction of the cylindrical means by fitting a circumferential line into the circumferential groove.

According to the present invention, in the configuration in which the sealing means 14 for closing the mouthpiece 12a of the mouthpiece member 12 standing on the shoulder member 13 is provided in the cylindrical means 26 projecting from the cap means 15, the seal packing 28 is formed in an annular shape. Since the seal packing 28 is detachably provided around the distal end portion of the cylindrical means 26, the closing means 27 can be formed at the distal end of the cylindrical means 26. By providing the valve member 31 for opening and closing the through hole 30 in the closing plate portion 29 of the 27, the differential pressure valve means 32 can be suitably configured.

At this time, the shoulder member 13 is formed so that the inner diameter D of the mouthpiece member 12 is as large as possible in order to make it easier to drink, and as shown in the drawing, the shoulder member 13 drinks with respect to the width W of the narrow flat plate portion 13a. Since the inner diameter D of the mouth member 12 is formed to be large such that 2W <D (at least W <D), the differential pressure valve means 32 can be formed to be large accordingly. For this reason, the differential pressure valve means 32 can be operated satisfactorily, and the attachment / detachment work of the valve member 31 with respect to the closing plate portion 29 is facilitated.

Since the sealing means 14 and the differential pressure valve means 32 are provided not in the shoulder member 13 but in the cap means 15, the shoulder member 13 is placed in the container when the seal packing 28 and the valve member 31 are removed for cleaning. Even if it is not separated from the main body 11, it is convenient that it can be removed by simply opening the cap means 15, and the seal packing 28 and the valve member 31 provided on the cylindrical means 26 at the same location can be removed at the same time. There is convenience that we can wash.

According to the second aspect of the present invention, the differential pressure valve means is formed in a state where the outer diameter of the cylindrical means 26 is formed smaller than the inner diameter D of the mouthpiece 12a and the mouthpiece 12a is closed by the seal packing 28. 32 is configured to enter and be positioned inside the mouthpiece 12a. Therefore, there is nothing in the internal space of the mouthpiece 12a that hinders the operation of the differential pressure valve means 32, so that the differential pressure valve means 32 can be operated satisfactorily.

According to the third aspect of the present invention, the cylindrical means 26 is configured by inserting the inner cylindrical member 34 into the outer cylindrical member 33, and the inner cylindrical member 34 is connected to the distal end portion 33 a of the outer cylindrical member 33. Since the protruding portion 34a is formed, the protruding strip 28a of the seal packing 28 is fitted to the outer peripheral surface of the protruding portion 34a, and the skirt portion 28b is fitted to the tip portion 33a. With the structure, the sealing means 14 and the differential pressure valve means 32 can be formed on the cap means 15, and the joint surface between the outer cylinder member 33 and the inner cylinder member 34 can be formed only by providing a single seal packing 28. It becomes possible to seal well.

According to the fourth aspect of the present invention, a circumferential groove is formed between the flange 34b of the inner cylinder member 34 and the distal end portion 33a of the outer cylinder member 33, and the protruding strip 28a of the seal packing 28 is formed in the circumferential groove. Since the structure is fitted, the seal packing 28 can be fixed so as not to move in the axial direction of the cylindrical means 26. Accordingly, when the seal packing 28 is crimped to the mouthpiece 12a by closing the cap means 15, the seal packing 28 does not squeeze up and fall off, and is securely fixed to a predetermined position of the cylindrical means 26. In this state, the mouthpiece 12a is suitably sealed.

It is a vertical side view which shows one Embodiment of this invention. It is a vertical side view which shows the opening / closing effect | action of the cap member which concerns on one Embodiment of this invention. The sealing means, closing means, and differential pressure | voltage valve means which concern on one Embodiment of this invention are shown, (A) is a vertical side view, (B) is an expanded sectional view of the principal part. It is a vertical side view which shows the effect | action of the differential pressure | voltage valve means which concerns on one Embodiment of this invention. The prior art is shown, (A) is a vertical side view which shows a shoulder member and a cap member, (B) is an expanded sectional view of a differential pressure valve.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the beverage container includes a container main body 11 that contains a beverage in a heat-retaining state or a cold-retained state, and a cylinder that is attached to the upper opening of the container main body 11 and communicates with the inside of the container main body 11. And a cap member 15 having an openable / closable cap member 15 having a sealing member 14 for closing the mouthpiece 12a of the mouthpiece member 12.

The cap member 15 is pivotally connected to the back surface of the shoulder member 13 via a horizontal pivot 16 and rotates between a closed position covered by the shoulder member 13 and an open position where the shoulder member 13 is opened. It is configured freely. The cap member 15 is locked by the detachable locking means 17 in the closed position. When the cap member 15 is released from the locking by pressing the operation button 18 with a fingertip, the cap member 15 is moved to the open position by the spring 19. When the cap member 15 is returned against the spring 19 after the beverage is automatically opened and the beverage is drunk, the cap member 15 is again locked in the closed position, and the sealing means 14 is brought into close contact with the drinking mouth 12a and closed.

The container body 11 is, for example, a thermos bottle type in which a vacuum heat insulating wall is formed by stainless inner and outer containers 20a and 20b, and an opening edge 22 formed with a male screw 21a is formed with a small diameter upward and extended. .

The shoulder member 13 is formed of a synthetic resin, and a flat plate portion 13a is formed on an upper portion of the shoulder portion 13b formed with a female screw 21b screwed to the male screw 21a, and the mouthpiece member 12 is erected from the flat plate portion 13a. In addition, an inclined enlarged diameter portion 12b toward the flat plate portion 13a is formed at the lower end portion of the mouthpiece member 12.

Such a beverage container drinks the beverage filled in the container body 11 by the user putting his / her lips against the drinking mouth 12a from the front side having the locking means 17 and tilting the beverage container. As shown in FIG. 1, it is desirable that the mouthpiece member 12 has an inner diameter D of the mouthpiece member 12 as large as possible from the viewpoint of ease of drinking, so that the outflow of the beverage and the inflow of the outside air are improved. Therefore, it is desirable to form the inclined enlarged diameter portion 12b as described above. Therefore, as shown in FIG. 1, the width W of the flat plate portion 13a surrounding the inclined enlarged diameter portion 12b must be narrow, and the width W is less than or equal to one half of the inner diameter D, that is, 2W <D. (W <D at maximum).

When the cap member 15 rotates to the closed position against the spring 19, the cap member 15 is automatically locked by the locking means 18 with one touch. Locking means 23 is provided on the cap member 15 so as to be slidable up and down. When the cap member 15 is rotated to the closed position, the locking means 23 faces the locking means 17. That is, when the locking means 23 is moved downward, the operation button 18 of the locking means 17 is locked and cannot be pushed. Therefore, when drinking a beverage, if the operation button 18 is released by moving the locking means 23 upward as shown by the arrow F1 in FIG. 2 and then pressing the operation button 18 as shown by the arrow F2 from this state, The locking means 17 is released, and the cap member 15 is automatically opened to the open position by the spring 19 as shown by the arrow F3, and the opened cap member 15 holds the open position by the spring 19.

In the case of the illustrated example, the locking means 23 includes a holding means 24 that protrudes forward and backward toward both sides by a spring, and is slidable up and down between a pair of vertical walls 25. A concave portion for fitting and locking the holding means 24 is provided on the vertical wall 25 at both the unlocked position moved upward and the locked position moved downward.

As shown in FIG. 3, the sealing means 14 projects from the inside of the cap means 15 so as to face the mouthpiece 12a, and the tubular means 26 communicates the internal space with the outside air, and the tubular means. A closing means 27 for closing the front end of 26, and a seal packing 28 detachably attached to a peripheral portion of the front end of the cylindrical means 26.

The closing means 27 includes a closing plate portion 29 that closes the distal end tubular portion of the cylindrical means 26, a through hole 30 penetrating through the closing plate portion 29, and a valve member 31 that closes the through hole 30 in an openable and closable manner. The valve member 31 opens the through hole 30 by elastic deformation when the inside of the container body 11 is depressurized, and elastically deforms the through hole 30 when the inside of the container body 11 returns to atmospheric pressure. A differential pressure valve means 32 for closing is configured.

3A, the cylindrical means 26 includes an outer cylinder member 33 projecting integrally from the cap means 15 and an inner cylinder member 34 integrally including the closing plate portion 29. The inner cylinder member 34 is inserted into the outer cylinder member 33 and fixed to each other by ultrasonic welding, high frequency welding or the like. At this time, as shown in the figure, a rib 35 concentric with the outer cylinder member 33 is formed in the cap means 15 so that the insertion end of the inner cylinder member 34 is fitted between the rib 35 and the outer cylinder member 33. It is preferable to configure.

The outer cylinder member 33 and the inner cylinder member 34 are located at locations near the inner surface of the cap means 15 and form slits 36 and 37 that communicate with each other, whereby the inner space of the cylindrical means 26 is formed. 38 communicates with the internal space of the cap means 15 and further communicates with the outside air through a gap between the cap means 15 and the shoulder member 13.

With the inner cylinder member 34 inserted into the outer cylinder member 33, the inner cylinder member 34 forms a protruding portion 34 a that protrudes from the distal end portion 33 a of the outer cylinder member 33. At this time, a flange 34b is preferably formed on the outer peripheral surface of the protruding end of the protruding portion 34a.

The seal packing 28 is integrally formed in an annular shape by an elastic material such as silicon rubber or other rubber, and has an inward protruding peripheral strip 28a fitted to the outer peripheral surface of the protruding portion 34a of the inner cylindrical member 34; A skirt portion 28b that is fitted to the outer peripheral surface of the distal end portion 33a of the outer cylinder member 33 is integrally formed, and the outer cylinder member 33 and the inner cylinder member 34 are simply formed by elastically attaching one seal packing 28. Seals the joint surface well. In the case of the illustrated embodiment, the projecting circumferential stripe 28 a is fitted into a circumferential groove formed between the flange 34 b of the inner cylinder member 34 and the distal end portion 33 a of the outer cylinder member 33, and thereby the axial direction of the cylindrical means 26. Fixed immovable. Accordingly, when the seal packing 28 is crimped to the mouthpiece 12a by closing the cap means 15, the seal packing 28 does not squeeze up and fall off, and is securely fixed to a predetermined position of the cylindrical means 26. In this state, the mouthpiece 12a is suitably sealed.

The valve member 31 is integrally formed of an elastic material such as silicon rubber or other rubber, and a shaft portion 31a inserted into the central through hole of the closing plate portion 29, and the back surface of the closing plate portion 29 at the tip of the shaft portion 31a. A conical protrusion 31b that locks onto the shaft, and an umbrella portion 31c that extends from the base end of the shaft portion 31a to cover the through-hole 30 and elastically contact the peripheral portion with the surface of the closing plate portion 29. Preferably, an annular rib 31d protruding downward is provided on the periphery of the umbrella portion 31c. The annular rib 31d keeps the outer peripheral edge of the umbrella portion 31c in a perfect circle and provides a knob when the valve member 31 is removed with a fingertip.

Accordingly, the through hole 30 of the closing plate portion 29 is normally closed by the valve member 31. Therefore, the seal packing 28 is in close contact with the mouthpiece 12a while the mouthpiece 12a is closed by the sealing means 14 by turning the cap means 15 to the closed position, and the inner periphery of the seal packing 28 is closed. Since the plate portion 29 closes the through-hole 30 by the valve member 31, even when the beverage container falls down, the beverage does not leak from the mouthpiece 12a.

Therefore, as described above, when the inside of the container body 11 is depressurized due to the temperature of the beverage and a pressure difference is generated with respect to the atmospheric pressure, the valve member constituting the differential pressure valve means 32 as shown in FIG. 31 of the umbrella portion 31c is elastically deformed so that the peripheral portion is separated from the surface of the closing plate portion 29 to open the through hole 30, and the internal space 38 of the cylindrical means 26 communicating with the outside air is communicated with the inside of the container body 11. Outside air is introduced into the container body 11 as shown by the arrows in the figure. Therefore, since the internal pressure of the container body 11 is balanced with the atmospheric pressure, the seal packing 28 is not adsorbed by the mouthpiece 12a and does not hinder the opening operation of the cap means 15.

In the case of the illustrated embodiment, the outer diameter of the cylindrical means 26 is formed slightly smaller than the inner diameter D of the mouthpiece member 12, and the seal member 28 is in close contact with the mouthpiece 12a, and the valve member 31 and the blockage are closed. Since the plate portion 29 is positioned so as to enter the mouthpiece 12a, and there is nothing that hinders the operation of the pressure difference valve means 32 in the inner space of the mouthpiece 12a, the pressure difference valve means 32 is operated satisfactorily. I can.

Incidentally, as described above, the mouthpiece member 12 is configured to be easy to drink by making the inner diameter D sufficiently large, and accordingly, the cylindrical means 26 and the differential pressure valve means 32 are necessary and sufficient. It is greatly formed. As a result, the differential pressure valve means 32 can be satisfactorily operated, and the operation of attaching and removing the valve member 31 to the closing plate portion 29 is facilitated.

In particular, when removing the valve member 31 for cleaning, there is a convenience that the valve member 31 can be pulled out only by opening the cap means 15 without separating the shoulder member 13 from the container body 11. Further, there is a convenience that the seal packing 28 provided on the cylindrical means 26 at the same location can be removed and cleaned at the same time.

Also, when the valve member 31 is mounted on the closing plate portion 29 again after cleaning, the valve member 31 is formed to be sufficiently large as necessary, so that the operation is easy, and particularly an amateur such as a housewife at home. Therefore, it is of great significance that no difficulty is involved in the installation / removal work.

DESCRIPTION OF SYMBOLS 11 Container body 12 Spout member 12a Spout 13 Shoulder member 14 Sealing means 15 Cap means 26 Cylindrical means 27 Closing means 28 Seal packing 28a Projection strip 28b Skirt part 29 Closure board part 30 Through-hole 31 Valve member 31a Shaft part 31b Projection 31c Umbrella 32 Differential pressure valve means 33 Outer cylinder member 33a Tip 34 Inner cylinder 34a Projection 34b Flange 36, 37 Slit 38 Internal space

This invention provides the drink container which solved the said subject. Therefore, the present invention is configured as a first means, a container main body for storing a beverage in a heat-retaining state or a cold-retaining state, and a cylindrical shape that is attached to the upper opening of the container main body and communicates with the inside of the container main body. A shoulder member provided with a mouthpiece member and an openable / closable cap member provided with a sealing means for closing the mouthpiece of the mouthpiece member, the sealing means protruding from the cap means so as to face the mouthpiece. A cylindrical means that is provided and communicates the internal space with the outside air; a seal packing that is fixed to the cylindrical means and closes the mouthpiece; and that the mouthpiece is closed by the seal packing. A through-hole communicating with the mouth, and a valve member that closes the through-hole so as to be openable and closable. The valve member is elastically deformed when the inside of the container body is depressurized to open the through-hole. The inside of the main body It lies in comprising constitute differential pressure valve means for closing the hole by restoring an elastic back to atmospheric pressure.
Further, the present invention is configured as the second means , a container main body for storing the beverage in a heat-retaining state or a cold-retaining state, and a cylindrical shape that is attached to the upper opening of the container main body and communicates with the inside of the container main body. A shoulder member provided with a mouthpiece member and an openable / closable cap member provided with a sealing means for closing the mouthpiece of the mouthpiece member, the sealing means protruding from the cap means so as to face the mouthpiece. A cylindrical means that is provided and communicated with the outside air, a closing means that closes the tip of the cylindrical means, and an annular seal packing that is detachably provided around the distal end of the cylindrical means The closing means comprises: a closing plate portion that closes the distal end tubular portion of the cylindrical means; a through hole that is provided through the closing plate portion; and a valve member that closes the through hole so as to be freely opened and closed. The valve member is configured such that the inside of the container body is depressurized. The hole opened by that the elastic deformation, lies in that the interior of the container body is formed by constituting a differential pressure valve means for closing the hole by restoring an elastic back to atmospheric pressure.

According to the first or second aspect of the present invention, the cylindrical means 26 protruding from the cap means 15 is provided with the sealing means 14 for closing the mouthpiece 12a of the mouthpiece member 12 standing on the shoulder member 13. In the provided structure, the sealing means 14 forms an internal space 38 that communicates with the outside air by the cylindrical means 26, is fixed to the cylindrical means 26, and closes the mouthpiece 12a. Since the through hole 30 for communicating the internal space 38 with the mouthpiece 12a in a state where the mouthpiece 12a is closed by the packing 28 is provided, the valve member 31 for opening and closing the through hole 30 is preferably provided. The differential pressure valve means 32 can be configured.

At this time, the shoulder member 13 is formed so that the inner diameter D of the mouthpiece member 12 is as large as possible in order to make it easier to drink, and as shown in the drawing, the shoulder member 13 drinks with respect to the width W of the narrow flat plate portion 13a. Since the inner diameter D of the mouth member 12 is formed to be large such that 2W <D (at least W <D), the differential pressure valve means 32 can be formed to be large accordingly. Therefore, it allows good operation of the differential pressure valve unit 32, moreover, there is an effect that its mounting and dismounting is facilitated.

Since the sealing means 14 and the differential pressure valve means 32 are provided not in the shoulder member 13 but in the cap means 15, the shoulder member 13 is placed in the container when the seal packing 28 and the valve member 31 are removed for cleaning. without separating from the main body 11, by simply opening the cap means 15, have access that is removable, moreover, there is convenient that can simultaneously remove and clean the seal packing 28 and the valve member 31 in the same place.

According to the third aspect of the present invention, the differential pressure valve means is formed in a state where the outer diameter of the cylindrical means 26 is smaller than the inner diameter D of the mouthpiece 12a and the mouthpiece 12a is closed by the seal packing 28. 32 is configured to enter and be positioned inside the mouthpiece 12a. Therefore, there is nothing in the internal space of the mouthpiece 12a that hinders the operation of the differential pressure valve means 32, so that the differential pressure valve means 32 can be operated favorably.

According to the fourth aspect of the present invention, the cylindrical means 26 is configured by inserting the inner cylindrical member 34 into the outer cylindrical member 33, and the inner cylindrical member 34 is connected to the distal end portion 33 a of the outer cylindrical member 33. Since the protruding portion 34a is formed, the protruding strip 28a of the seal packing 28 is fitted to the outer peripheral surface of the protruding portion 34a, and the skirt portion 28b is fitted to the tip portion 33a. With the structure, the sealing means 14 and the differential pressure valve means 32 can be formed on the cap means 15, and the joint surface between the outer cylinder member 33 and the inner cylinder member 34 can be formed only by providing a single seal packing 28. It becomes possible to seal well.

Then, a peripheral groove between the tip portion 33a of the flange 34b and the outer cylindrical member 33 of the inner cylindrical member 34 as in the illustrated embodiment, the circular projection strip 28a of the seal packing 28 to fit into the circumferential groove If configured , the seal packing 28 can be fixed so as not to move in the axial direction of the cylindrical means 26. Accordingly, when the seal packing 28 is crimped to the mouthpiece 12a by closing the cap means 15, the seal packing 28 does not squeeze up and fall off, and is securely fixed to a predetermined position of the cylindrical means 26. In this state, the mouthpiece 12a is suitably sealed.

Claims (4)

A container body (11) for storing a beverage in a heat-retaining state or a cold-retained state, and a shoulder member provided with a cylindrical mouthpiece member (12) that is attached to the upper opening of the container body and communicates with the inside of the container body ( 13) and an openable / closable cap member (15) provided with sealing means (14) for closing the mouthpiece (12a) of the mouthpiece member (12),
The sealing means (14) protrudes from the cap means (15) so as to face the mouthpiece (12a) and has a cylindrical means (26) in which the internal space (38) communicates with the outside air, and the cylinder A closing means (27) for closing the tip of the cylindrical means, and an annular seal packing (28) detachably provided around the tip periphery of the cylindrical means (26),
The closing means (27) includes a closing plate portion (29) for closing the distal end tubular portion of the cylindrical means (26), a through hole (30) penetrating the closing plate portion, and opening and closing the through hole. It consists of a valve member (31) that closes freely,
The valve member (31) is elastically deformed when the inside of the container body is depressurized to open the through hole (30), and when the interior of the container body returns to atmospheric pressure, the valve member (31) is elastically restored to restore the passage. A beverage container comprising differential pressure valve means (32) for closing the hole (30). The cylindrical means (26) has the outer diameter formed smaller than the inner diameter (D) of the mouthpiece (12a), and the mouthpiece (12a) is closed by the seal packing (28). The beverage container according to claim 1, wherein the pressure valve means (32) is configured to enter and be positioned inside the drinking mouth (12a). The cylindrical means (26) is composed of an outer cylindrical member (33) projecting from the cap means (15) and an inner cylindrical member (34) provided with the closing plate portion (29). The cylindrical member (34) is inserted into the outer cylindrical member (33), and the inner cylindrical member (34) is formed with a protruding portion (34a) protruding from the distal end portion (33a) of the outer cylindrical member (33). ,
The seal packing (28) includes an inward projecting circumferential strip (28a) fitted to the outer peripheral surface of the projecting portion (34a) of the inner cylindrical member (34), and a distal end portion of the outer cylindrical member (33). The beverage container according to claim 1 or 2, wherein a skirt portion (28b) fitted to the outer peripheral surface of (33a) is integrally formed. The inner cylindrical member (34) is sandwiched between the flange (34b) and the outer cylindrical member (33) by forming a flange (34b) on the outer peripheral surface of the protruding end of the protruding portion (34a). A circumferential groove is formed on the outer peripheral surface of the projecting portion (34a), and the projecting strip (28a) is fitted into the circumferential groove, whereby the seal packing (28) is moved in the axial direction of the cylindrical means (26). The beverage container according to claim 3, wherein the beverage container is fixed so as not to move.

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