JP2003312786A - Beverage container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage container which can approximately seal a gap between a mouthpiece and a bush against both the outside and the inside to keep hygienic and well keep quality of a beverage and enables a conventionally used beverage filling machine to be used as it is or only with a slight modification, resulting in an improvement in economy. <P>SOLUTION: The bush 17 of a fitting 3 is screwed with the mouthpiece 14 of a beverage container body 1. Thus a gap between the inner periphery of the base of the mouthpiece 14 and the outer periphery of an intermediate part of the bush 17 is kept sealed by a first sealing member 22, and in addition a gap between the inner periphery at the tip of the mouthpiece 14 and the outer periphery at the tip of the bush 17 is kept sealed at an external open end by a second sealing member 49. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage container such as a draft beer barrel, which is used for filling and cooling or heating a desired beverage such as draft beer or draft sake and pouring.

[0002]

2. Description of the Related Art Conventionally, as an example of a draft beer barrel for business use, a bush of a well-type fitting is detachably screwed inside the mouthpiece of the body of the draft beer barrel, and the inner circumference of the base of the mouthpiece and the outer circumference of the middle portion of the bush are connected to each other. There is known a configuration in which a packing for sealing is interposed between them in a compressed state.

In the draft beer barrel having the above-mentioned structure, the female thread of the mouthpiece and the male thread of the bush are open to the outside, so that rainwater, fine dust, etc. are exposed from the opening to the female thread of the mouthpiece and the bush. Enter the gap with the male screw. The rainwater, dust, etc. that have entered are prevented from entering the draft beer barrel main body, that is, draft beer, by the packing interposed between the inner circumference of the base of the mouthpiece and the outer circumference of the intermediate portion of the bush. However, if rainwater, dust, etc. are left in a state where they enter the gap between the female screw of the mouthpiece and the male screw of the bush, they are not only unhygienic due to the generation of bacteria, but also loose packing, In the case of damage, rainwater, dust and the like may enter the draft beer barrel body and contaminate draft beer.

Conventionally, in order to solve the above problems,
As described in Japanese Patent Application Laid-Open No. 2000-79991, a collar-shaped portion is provided on the outer periphery of the tip portion of the bush, and a second sealing packing is compressed between the inner surface of the collar portion and the tip surface of the die. There has been proposed a beverage container having a structure in which it is interposed in a state to prevent rainwater, dust and the like from entering the gap between the female screw of the base and the male screw of the bush.

[0005]

However, in the structure of the conventional example as described above, the collar-shaped portion on the outer periphery of the tip of the bush is housed in the recess of the inner periphery of the tip of the die, and the second portion is formed in the recess of the die.
In the case where the above-mentioned packing is interposed in a compressed state with the collar portion of the bush, a gap remains between the peripheral wall of the recess of the die and the outer peripheral surface of the collar portion of the bush outside the second packing. Rainwater, dust, etc. may get into the gap,
Hygiene is still insufficient. Further, when the second packing is interposed in a compressed state between the tip surface of the die and the brim portion of the bush that covers the tip surface, the brim portion of the bush causes almost the entire tip surface of the die. Since it is impossible to use the conventional beer filling machine as it is, it is uneconomical because it cannot be used as it is, or is modified depending on the model, or it cannot be used depending on the model.

An object of the present invention is to solve the above-mentioned conventional problems, in which the tip of the mouthpiece and the bush has no external gap, and the gap between the mouthpiece and the bush is formed inside and outside. On the other hand, it can be sealed almost completely, and it is possible to prevent rainwater, dust and the like from entering from the outside, drinks from entering from the inside, and these can be mixed with the drink inside, therefore, it is hygienic. In addition to being able to retain, the quality of the beverage can be retained in good condition, and the conventional beverage filling machine can be used as it is, or only a simple modification with a slight change. Therefore, it is intended to provide a beverage container that can be used in the above, and thus can improve the economical efficiency.

[0007]

In order to solve the above problems, a beverage container according to the present invention comprises a beverage container body having a base,
A fitting having a bush that is detachably screwed to the inside of the base, a first seal member interposed between an inner circumference of a base of the base and an outer circumference of an intermediate portion of the bush, and a tip of the base. A second seal member is provided between the circumference and the outer circumference of the tip of the bush.

In the above structure, the second seal member may be configured to seal the upward opening portion between the inner circumference of the tip end portion of the mouthpiece and the outer circumference of the tip end portion of the bush. In this case, the inclined surface formed on the outer circumference of the second seal member is brought into pressure contact with the inclined surface formed on the inner circumference of the tip of the die, or a recess is formed on the inner circumference of the tip of the die, The second seal member can be pressed into contact with the recess.

Further, the second sealing member is fixedly provided on the tip of the bush, or a brim is formed on the outer periphery of the tip of the bush, and the second sealing member is attached to the tip of the bush. In addition, it is possible to fit the inside of the collar-shaped portion in a retaining state.

Further, an O-ring is used as the second sealing member, and the O-ring is pressed against the inner circumference of the tip of the mouthpiece while being engaged with the engaging portion formed on the outer circumference of the tip of the bush. You can

According to the present invention configured as described above,
The first seal member maintains a sealed state between the inner periphery of the base of the mouthpiece and the outer periphery of the intermediate portion of the bush, and the second seal
Since the seal member between keeps the inner circumference of the tip of the mouthpiece and the outer circumference of the tip of the bush in a sealed state, the gap between the mouthpiece and the bush can be almost completely sealed from the outside and the inside. It is possible to prevent rainwater, dust, and the like from entering and drinks from entering the inside, and prevent these from mixing with the drink inside. Also, the tip surface of the fitting can be opened almost completely without any obstacles, or it can be stopped to such an extent that a slightly protruding portion is generated on the inner peripheral side of the mouthpiece. Can be used as is, or can be used with only minor modifications with minor changes.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described. 1 is a partially cutaway front view showing a beverage container according to a first embodiment of the present invention, FIG. 2 is a partially enlarged cross-sectional view showing the beverage container, and FIG. 3 is an enlarged cross-sectional view showing an essential part of the beverage container. is there.

As shown in FIGS. 1 and 2, a beverage container 1 according to the present embodiment is attached to a beverage container body 2 and a mouth portion of the beverage container body 2, and supplies the beverage to the beverage container body 2. And a well type fitting 3 that can be discharged. In the present embodiment, an example in which the beverage container 1 is applied to a draft beer barrel will be described.

An example of the draft beer barrel main body 2 will be described. In particular, as is clear from FIG. 1, a body 11 made of metal such as stainless steel, an upper mirror 12 and a lower mirror 13 are integrally provided, and At the edge of the hole formed at the center of the mirror 12, a cylindrical base 14 made of metal, for example, stainless steel, is provided.
The bases of are joined together. A lower skirt portion 15 made of hard rubber or the like is integrally provided on the outer circumference of the lower mirror 13, and an upper skirt portion 16 made of hard rubber or the like is integrally provided on the outer circumference of the upper mirror 12. Holes for draining (not shown) in the lower skirt portion 15 and the upper skirt portion 16
Are respectively formed at one location or at a plurality of locations.

An example of the fitting 3 will be described. Particularly, as apparent from FIGS. 2 and 3, the base 1
4 and the upper part of the draft beer barrel main body 2, a bush 17 is inserted, and a female screw 18 is formed on the inner circumference of the middle portion of the base 14.
A male screw 19 formed on the outer periphery of the bush 17 at a position slightly inward of the tip portion of the bush 17 is removably screwed. An annular protrusion 20 formed on the inner circumference of the base of the base 14.
And an annular step portion 2 formed on the outer periphery of the intermediate portion of the bush 17
A seal ring 22 having a quadrangular cross section, which is a first seal member, is interposed between the first seal member 1 and the seal member 1 in a compressed state for sealing.

The bush 17 has a male screw 1 at the outer periphery of its tip.
It is formed in the small diameter portion 46 which is a little smaller than the valley portion of 9,
The outer periphery of the small diameter portion 46 on the tip end side is formed by a step portion 47 into a small diameter portion 48 having a smaller diameter. The packing 49, which is the second seal member, is made of an elastic material such as rubber, and has a collar-shaped portion integrally provided on the outer periphery of the base of a relatively short cylindrical body, and the outer peripheral side of the collar-shaped portion extends from the tip. The inclined surface 50 is formed so that its diameter gradually decreases toward the base side. The packing 49 has a small diameter portion 4 of the bush 17 whose inner peripheral surface is made of stainless steel as described later.
8 is fixed to the small diameter portion 48 by injection molding through a primer or the like.

The male screw 19 of the bush 17 is detachably screwed to the female screw 18 of the mouthpiece 14, and between the annular projecting portion 20 on the inner circumference of the base of the mouthpiece 14 and the annular step portion 21 on the outer circumference of the middle portion of the bush 17. When the seal ring 22 is inserted in the compressed state and sealed, the inclined surface 50 of the packing 49 expands in the mouthpiece 14 so as to gradually increase in diameter from the base side to the tip side on the inner circumference of the tip portion. The slanted surface 51 formed in such a manner is pressed and sealed. In this sealed state, the tip surface of the packing 49 is the base 1.
It is set so as to be located substantially on the same plane as the tip end surface of No. 4. Along with this, the seal ring 22 serving as the first inner seal member maintains a sealed state between the annular projecting portion 20 on the inner periphery of the base of the mouthpiece 14 and the annular step portion 21 on the outer periphery of the intermediate portion of the bush 17. At the same time, the ring-shaped upward opening portions at the tip portions of the mouthpiece 14 and the bush 17 are kept in a sealed state by the packing 49 which is the outer second sealing member.

The upper part of the down tube 23 is inserted into the bush 17, and the down tube 23 is provided so that its lower end reaches the vicinity of the bottom part of the draft beer barrel body 2 and is movable in the axial direction. The down tube 23 has a collar-shaped portion 24 at the upper end thereof, and the lower portion of the first valve body 25 whose outer peripheral portion is made of rubber is fixed to the inside of the upper end portion by press fitting or the like. A step portion 26 on the outer periphery of the intermediate portion is in contact with the upper surface of the collar portion 24.

The stopper 27 is made of a leaf spring material, and the base ring-shaped portion 28 is fitted to the upper end of the down tube 23 in contact with the lower surface of the collar-shaped portion 24. Retaining portions 29 are formed at a plurality of locations inside the lower end of the bush 17, and retainers 30 are engaged with the receiving portions 29 on the outer periphery of the down tube 23. The inside of the bush 17 and the inside of the draft beer barrel body 2 are communicated with each other by an open portion 31 at the lower end of the bush 17, an elongated hole 33 formed in the skirt portion 32 of the bush 17, and the like. The elongated holes 33 are formed at a plurality of locations on the circumference and in two steps along the axial direction.

A compression spring 34 is interposed between the ring-shaped portion 28 of the stopper 27 and the retainer 30 on the outer periphery of the down tube 23, and the elasticity of the compression spring 34 causes the stopper 27, the down tube 23 and the first valve body. 25
Are integrally urged upward. As a result, the outer peripheral portion of the upper portion of the first valve body 25 is brought into contact with the valve seat 35 provided inside the bush 17, the first flow passage 36 is closed, and the first stopper portion 37 and the first stopper portion 37 of the stopper 27 are closed. A second stopper portion 38 is projected outward from a hole 39 formed in the skirt portion 32 of the bush 17. When cleaning and repairing the draft beer barrel main body 2 and the fitting 3, when the first valve body 25, the down tube 23, the stopper 27, etc. are lowered against the elasticity of the compression spring 34 to degas, the stopper portion is used. 37 and 38 are put into the bush 17 by abutting against the lower edge of the hole 39, and can be removed from the mouthpiece 14 in this state. Even if the fitting 3 is to be removed from the mouthpiece 14 in the state where the gas is not released as described above. Stopper part 3
It is set so that 7 comes into contact with the lower surface of the mouthpiece 14 and is in a retaining state (locked state).

A second valve body 40 is axially movable inside the upper portion of the down tube 23. A compression spring 42 is interposed between the second valve body 40 and a step portion 41 formed on the inner circumference of the down tube 23 below the second valve body 40. Due to the elasticity of the compression spring 42, the second valve body 40 is elastic.
Is urged upward. Thereby, the second valve body 40
Is brought into contact with the valve seat 43 of the first valve body 25, and the second flow path 44 is closed. Bush 17
Engaging claws 45 capable of engaging with a jig (not shown) for rotational operation are formed at two positions inside the upper end (outer end) of the same with 180 ° phase shift.

The fitting 3 is a seal ring 2
2, except for the outer periphery of the first valve body 25 and the packing 49,
It is made of metal such as stainless steel.

To fill the draft beer barrel 1 with draft beer, for example, the draft beer barrel 1 is turned upside down (not shown in FIG. 2), and the draft beer filling machine 52 is used. The packing 54 around the lower end of the outer cylinder 53 is placed on the tip surfaces of the cap 14 and the packing 49, and the clamp 55 is attached to the collar-shaped portion 56 of the cap 14.
And the draft beer filling machine 52 is linked to the draft beer barrel 1. Then, the filling probe 57 presses the first valve body 25 and the second valve body 40 in a sealed state by interposing the packing 58. Along with this, the first valve body 25, the down tube 23, and the like are moved toward the bottom side against the elasticity of the compression spring 34, so that the first valve body 25 is separated from the valve seat 35, and the first valve body 25 is separated. The flow path 36 is opened, and the second valve body 40 is moved toward the bottom side against the elasticity of the compression spring 42 to move the second valve body 40 to the valve seat 43.
The second flow path 44 can be opened by being separated from. Then, the draft beer is supplied from a draft beer supply source (not shown) between the outer cylinder 53 and the filling probe 57, the first flow path 59,
Is supplied into the draft beer barrel main body 2 through the flow passage 36 of the bush 17 and the inside of the skirt portion 32 of the bush 17, and the gas in the draft beer barrel main body 2 is supplied to the down tube 23, the second flow passage 44, and the tip of the filling probe 57. The draft beer can be filled into the draft beer barrel main body 2 by discharging the draft beer through the hole 60 and the flow passage 61 in the filling probe 57. When filling this,
As described above, since the tip surface of the mouthpiece 14 which is a portion where the packing 54 of the draft beer filling machine 52 is overlapped is flat and opened without any obstacle, the draft beer filling machine 52 which has been conventionally used can be used as it is. can do. It should be noted that the draft beer barrel 1 can be filled with draft beer by the draft beer filling machine even in a normal orientation in which the draft beer barrel 1 is not inverted.

A dispense head (not shown) is used to discharge the draft beer in the draft beer barrel 1 for pouring into a desired container such as a glass. That is, the lower part of the dispensing head is inserted into the bush 17 and the inside of the first valve body 25, the tops of the first valve body 25 and the second valve body 40 are pressed, and the fitting 3 is made elastic by the compression spring 34. The second valve body 40 is lowered against the elasticity of the compression spring 42, and the second flow passage 44 is opened while the first flow passage 36 is opened against the elasticity of the compression spring 42. In this state, carbon dioxide gas is supplied from the carbon dioxide gas supply source from the first flow path 36 through the flow path of the dispensing head into the draft beer barrel body 2, and the draft beer in the draft beer barrel body 2 is pressurized to bring down the draft beer. It can be discharged through the tube 23, the second flow path 44, and the flow path of the dispensing head and poured into a desired container.

According to the present embodiment, as described above, the seal ring 22 which is the first sealing member maintains the sealed state between the inner periphery of the base of the mouthpiece 14 and the outer periphery of the intermediate portion of the bush 17, and Since the packing 49, which is the second sealing member, holds the annular upward outward opening between the inner circumference of the tip of the mouthpiece 14 and the outer circumference of the tip of the bush 17, that is, the open end of the mouthpiece 14 in a sealed state. Make sure that the gap with the bush 17 is inside and outside,
Moreover, it can be sealed almost completely, and it is possible to prevent rainwater, dust, etc. from the outside and draft beer from the inside, and prevent these from mixing with the draft beer inside, and keep it hygienic. It is possible to prevent deterioration of the quality of draft beer.
Further, according to the present embodiment, since the outer shape of the mouthpiece 14 is not changed or a portion projecting from the tip end surface of the mouthpiece 14 is not required, the conventional draft beer barrel 1 has a shape of only the bush 17. It can be repaired at a relatively low cost by changing it, and the draft beer filling machine 52 which has been used conventionally can be used as it is without changing the design, and the economical efficiency can be improved.

Next, a second embodiment of the present invention will be described. FIG. 4 is an enlarged sectional view of an essential part showing a beverage container according to the second embodiment of the present invention.

In the present embodiment, the illustration and description of the same configuration as the first embodiment will be omitted, and a configuration different from the first embodiment will be mainly described.

As shown in FIG. 4, in this embodiment, the height of the packing 49 and the outer diameter on the tip end side are the first
The height is slightly higher than the height of the packing 49 in the above embodiment and slightly larger than the outer diameter of the tip side, that is, the tip side is slightly larger, and when the bush 17 is screwed to the base 14. The sloping surface 50 of the packing 49 may be configured to be reliably compressed by the sloping surface 51 on the inner circumference of the tip surface of the mouthpiece 14.

In the present embodiment, the tip end surface of the packing 49 may be projected slightly ahead of the tip end surface of the mouthpiece 14, but as in the first embodiment, the draft beer filling machine 52 is installed in the draft beer barrel 1. Packing 49 when working together
By compressing and absorbing the packing 54, the conventionally used draft beer filling machine 52 can be used as it is. Even if the protrusion of the packing 49 becomes an obstacle, the draft beer filling machine conventionally used. 52
The packing 54 can be refurbished and used at a relatively low cost with relatively little modification such as cutting the inner peripheral portion of the packing 54. In addition to this, the present embodiment has the same advantages as the first embodiment.

Next, a third embodiment of the present invention will be described. FIG. 5: is a principal part expanded sectional view which shows the drink container which concerns on the 3rd Embodiment of this invention.

In the present embodiment, the illustration and description of the same configuration as the first embodiment will be omitted, and mainly the configuration different from the first embodiment will be described.

As shown in FIG. 5, in this embodiment, an annular projecting portion 62 having a diameter slightly smaller than that of the small diameter portion 46 is formed on the outer circumference of the tip of the bush 17, and an annular shape is formed on the inner circumference of the packing 49 near the tip. Is formed so that the annular protrusion 62 and the annular recess 63 are engaged with each other, so that the packing 49 can be more securely fixed to the bush 17. It is a thing.

Also in this embodiment, the same advantages as those of the first embodiment can be obtained.

Next, a fourth embodiment of the present invention will be described. FIG. 6 is an enlarged sectional view of an essential part showing a beverage container according to the fourth embodiment of the present invention.

In the present embodiment, the illustration and description of the same configuration as the first embodiment will be omitted, and a configuration different from that of the first embodiment will be mainly described.

As shown in FIG. 6, in this embodiment, holding holes 64 are formed at a plurality of locations on the circumference of the small diameter portion 48 of the bush 17 on the side of the step portion 47, and packing 49 is provided in each holding hole 64. By providing the protrusions 65 integrally provided at a plurality of locations on the inner circumference of the base portion of the above in a fitted state, the packing 49 can be more securely held in the fixed state with respect to the bush 17. It is composed.

Also in this embodiment, the same advantages as those of the first embodiment can be obtained.

Next explained is the fifth embodiment of the invention. FIG. 7: is a principal part expanded sectional view which shows the drink container which concerns on the 5th Embodiment of this invention.

In the present embodiment, the illustration and description of the same configuration as the first embodiment will be omitted, and a configuration different from that of the first embodiment will be mainly described.

As shown in FIG. 7, in the present embodiment, the tip of the bush 17 is formed so as to project above the base 14, and a small-diameter collar-shaped portion 66 is integrally formed on the outer periphery of the tip of the bush 17. A packing 67, which is a second sealing member, is fitted inside the collar-shaped portion 66 on the outer periphery of the tip of the bush 17, and the packing 67 is retained by the collar-shaped portion 66. An inclined surface 68 similar to that in the above embodiment is formed on the outer peripheral base side of the packing 67.
Then, the male screw 19 of the bush 17 is screwed onto the female screw 18 of the mouthpiece 14, so that the inclined surface 68 of the packing 67 is pressed against the inclined surface 51 of the inner periphery of the tip end portion of the mouthpiece 14 and is kept in a sealed state. It is configured.

In the present embodiment, the brim-shaped portion 66 of the bush 17 projects slightly higher than the tip surface of the mouthpiece 14, but its outer diameter is reduced so that the tip surface of the mouthpiece 14 is hardly covered. Therefore, it is relatively easy to use by modifying the inner periphery of the packing 54 of the conventional draft beer filling machine 52 such as cutting the inner periphery of the draft beer filling machine 52 at a low cost. it can. In addition to this, the present embodiment has the same advantages as the first embodiment.

Next, a sixth embodiment of the present invention will be described. FIG. 8: is a principal part expanded sectional view which shows the drink container which concerns on the 6th Embodiment of this invention.

In the present embodiment, the illustration and description of the same configuration as the first embodiment will be omitted, and a configuration different from the first embodiment will be mainly described.

As shown in FIG. 8, in the present embodiment, a pair of annular projections 6 is provided on the outer periphery of the tip portion of the bush 17.
9 and 70 are formed, these protrusions 69 and 70 are formed.
An annular groove 71 is formed between them. On the other hand, a recess 72 is formed on the inner periphery of the tip of the mouthpiece 14 so as to correspond to the protrusions 69, 70 and the groove 71. The packing 73, which is the second seal member, has a pair of annular projections 74 on its inner circumference.
75 is formed, and an annular groove 76 is formed between the protrusions 74 and 75. Groove 7 of packing 73
6 is fitted into the protrusion 70 of the bush 17, and the packing 7
The protrusion 74 of No. 3 is fitted in the groove 71 of the bush 17, and the protrusion 75 of the packing 73 is superposed on the upper surface of the bush 17, that is, the protrusions 74 and 75 of the packing 73 and the groove 76 and the protrusion of the bush 17. The 69, 70 and the groove 71 are engaged with each other so that the packing 73 is securely held in the fixed state with respect to the bush 17.

Then, the male screw 19 of the bush 17 is screwed to the female screw 18 of the mouthpiece 14, so that the packing 73 is pressed against the recess 72 of the mouthpiece 14 and is kept in a sealed state.

In the present embodiment, the recess 72 is formed on the inner circumference of the tip of the mouthpiece 14, so that the space for storing the packing can be increased and the cross-sectional area of the packing 73 can be set to be large so that a reliable seal can be obtained. You can get the status. In the present embodiment, in addition to the above, the first
It has the same advantages as the above embodiment. Also in this embodiment, the inner peripheral wall surface of the recess 72 of the mouthpiece 14 and the outer peripheral surface of the packing 73 may be pressed against each other by the inclined surfaces as in the first to fifth embodiments. With such a configuration, the cap 14 and the bush 17 can be more surely sealed and the gap therebetween can be surely eliminated.

Next explained is the seventh embodiment of the invention. FIG. 9: is a principal part expanded sectional view which shows the drink container which concerns on the 7th Embodiment of this invention.

In the present embodiment, the illustration and description of the same configuration as that of the first embodiment will be omitted, and a configuration different from that of the first embodiment will be mainly described.

As shown in FIG. 9, in this embodiment, an annular engaging groove 77 is formed on the outer periphery of the tip portion of the bush 17. The engagement groove 77 is formed so as to gradually expand from the bottom to the open side on the side.
An O-ring 78, which is a second seal member, is engaged with the bottom of the engagement groove 77. Then, the male screw 19 of the bush 17 is screwed to the female screw 18 of the mouthpiece 14, so that the outer peripheral side of the O-ring 78 is pressed against the inclined surface 51 of the inner periphery of the tip end portion of the mouthpiece 14 and is held in a sealed state. Has been done.

The present embodiment also has the same advantages as those of the fifth and first embodiments.

Incidentally, also in the third and fourth embodiments shown in FIGS. 5 and 6, the packing 49 can be formed large similarly to the case of the second embodiment shown in FIG. Further, the inclined surface 51 of the mouthpiece 14 may be formed to have a larger area than that of the conventionally used mouthpiece 14. In addition, the present invention is not limited to the above embodiment, and various design changes can be made without departing from the basic technical idea thereof.

[0052]

As described above, according to the present invention, the first seal member maintains the sealed state between the inner circumference of the base of the mouthpiece and the outer circumference of the intermediate portion of the bush, and the second seal member is used. Since the inner circumference of the tip of the mouthpiece and the outer circumference of the tip of the bush are kept in a sealed state, the gap between the mouthpiece and the bush can be sealed almost completely to the outside and the inside, and rainwater and dust from the outside can be sealed. It is possible to prevent such substances from getting into the inside beverage and from entering the beverage from the inside. Therefore,
Not only can it be maintained hygienically, but also the quality of the beverage can be kept good. Also, the tip surface of the fitting can be opened almost completely without any obstacles, or it can be stopped to such an extent that a slightly protruding portion is generated on the inner peripheral side of the mouthpiece. Can be used as is, or can be used with only minor modifications with minor changes,
Therefore, economic efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a beverage container according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view showing the beverage container.

FIG. 3 is an enlarged sectional view of an essential part showing the beverage container.

FIG. 4 is an enlarged sectional view of an essential part showing a beverage container according to a second embodiment of the present invention.

FIG. 5 is an enlarged sectional view of an essential part showing a beverage container according to a third embodiment of the present invention.

FIG. 6 is an enlarged sectional view of an essential part showing a beverage container according to a fourth embodiment of the present invention.

FIG. 7 is an enlarged sectional view of an essential part showing a beverage container according to a fifth embodiment of the present invention.

FIG. 8 is an enlarged sectional view of an essential part showing a beverage container according to a sixth embodiment of the present invention.

FIG. 9 is an enlarged sectional view of an essential part showing a beverage container according to a seventh embodiment of the present invention.

[Explanation of symbols]

1 draft beer barrel (beverage container) 2 Draft beer barrel body (beverage container body) 3 fitting 14 mouthpiece 17 Bush 22 Seal ring (first seal member) 23 Down Tube 25 First valve body 27 Stopper 40 Second valve body 46 engagement groove 49 Packing (second sealing member) 50 slope 51 slope 67 Packing (second sealing member) 68 Inclined surface 72 recess 73 Packing (second sealing member) 78 O-ring (second seal member)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tadahiro Ogawa             Eggplant, 2-24 Higashishinagawa, Shinagawa-ku, Tokyo             Inside Toa Corporation F term (reference) 3E082 AA04 BB03 CC01

Claims (7)

[Claims] 1. A beverage container body having a base, a fitting having a bush removably screwed to the inside of the base, and an intermediary between a base inner circumference of the base and an intermediate outer circumference of the bush. A beverage container comprising: a first seal member; and a second seal member interposed between the inner circumference of the tip end portion of the base and the outer circumference of the tip end portion of the bush. 2. The beverage container according to claim 1, wherein the second sealing member seals an upward opening portion between the inner circumference of the tip end portion of the base and the outer circumference of the tip end portion of the bush. 3. The beverage container according to claim 2, wherein the inclined surface formed on the outer circumference of the second seal member is pressed against the inclined surface formed on the inner circumference of the tip of the die. 4. The beverage container according to claim 2, wherein the base has a recess on the inner circumference of the tip portion, and the second seal member is pressed into contact with the recess. 5. The beverage container according to claim 1, wherein the second seal member is fixedly provided on the tip of the bush. 6. The bush has a collar-shaped portion on the outer periphery of the tip end portion,
The beverage container according to any one of claims 1 to 4, wherein a second seal member is fitted to the tip end portion of the bush in a state of preventing the inside of the collar-shaped portion from coming off. 7. The beverage according to claim 1, wherein the second seal member is an O-ring, and is pressed against the inner circumference of the tip of the mouthpiece in a state of being engaged with an engaging portion formed on the outer circumference of the tip of the bush. container.