JPH09207996A - Fitting for draft beer barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety on removing a fitting out of a cap while lengthening the span of life for a stopper, and to reduce cost while improving efficiency in assembling work. SOLUTION: A stopper 15 made up of a leaf spring consists of a stopper part 18 that is provided in continuity at its dangling part 17. The stopper 15 is provided, being movable together with a gas valve 13, etc., and the stopper part 18 is jutted out of a slot 35 of a bush 5. The gas valve 13, the stopper 15, etc., are lowered with a jig, making a gas passage 34 open, and thereby residual pressure in a draft beer barrel main body 1 is exhausted and at the same time, the stopper 18 is put in a bush 5 with the dangling part 17 elastically deformed, and the state of being prevented from coming-off is released. Then, the bush, etc., being engaged, are turned by operation of the jig under the state of being released, and screws 6, 7 are loosened and removed from a cap 4. If the bush 5, etc., are tried to be forcibly removed from the cap 4, the stopper part 18 is brought into contact with the inner end face of the cap 4 so that it bears load at least in the direction where metal is compressed, and popping- out by residual pressure in the draft beer barrel main body 1 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a draft beer barrel fitting for business use, and more particularly to a pop-out prevention device for the fitting.

[0002]

2. Description of the Related Art Conventionally, as an example of this type of draft beer barrel fitting, when a dispenser is attached to a mouthpiece and draft beer is poured out, a gas valve is opened and gas is fed from the outer peripheral portion of the gas valve into the draft beer barrel body. At the same time, there is known a configuration in which a beer valve is opened and draft beer is sent out from the draft beer barrel main body through the inside of the gas valve.

As another example of fittings for a draft beer barrel, a gas valve is opened, gas is sent from the outer peripheral portion of the gas valve into the body of the draft beer barrel, and draft beer is sent out from the body of the draft beer barrel through the inside of the gas valve. The composition is known.

In any of the above-mentioned conventional configurations, when cleaning or repairing the draft beer barrel body and fittings, the fitting gas valve is pressed and opened to release the residual pressure in the draft beer barrel body. After ensuring safety, it is necessary to remove the fitting from the mouthpiece of the draft beer barrel.

However, in the configuration of the conventional example, the fitting can be removed from the cap without releasing the residual pressure in the draft beer barrel body by opening the gas valve, so that the gas valve can be used for cleaning and repairing the draft beer barrel body and the fitting. If you remove the fitting from the base without performing the opening operation of, if there is residual pressure in the body of the draft beer barrel, at the end part that removes the fitting from the base,
The residual pressure may cause the fitting to vigorously jump out of the base, resulting in personal injury, which is dangerous.

Therefore, the present applicant has previously filed Japanese Patent Application No. 6-43.
As No. 304, a stopper is provided so as to be able to move together with the gas valve, and this stopper is bent so as to have a substantially V shape in the middle portion, and the stopper portion is elastically deformed in the bush at the open position of the gas flow path by the gas valve. In a pressure contact state, and at the closed position of the gas flow path by the gas valve,
We proposed a structure in which the stopper part is projected outward from the open part of the bush by impact resilience.

In the draft beer barrel fitting using the stopper as described above, when the bush is loosened with respect to the base without removing the gas valve to try to remove the bush from the base, the stopper portion of the stopper causes the inner end surface of the base to move, Alternatively, it is engaged with the inner surface of the upper mirror of the draft beer barrel body to be prevented from coming off. Therefore, the gas valve cannot be removed from the mouthpiece of the draft beer barrel until after opening the gas valve to release the residual pressure in the draft beer barrel. . Also,
At the time of assembling into the main body of the draft beer barrel, since the gas valve and the like can be linearly inserted into the bush by utilizing the elastic deformation of the stopper, the assembling workability can be improved.

[0008]

However, in the stopper in the conventional draft beer barrel fitting of the above-mentioned conventional example, the hanging portion and the inclined portion are continuously provided by the folded-back portion, and the inclined portion gradually droops as it reaches the stopper portion side at the tip. It is formed so as to be separated from the portion, and the inclined portion is pressed so that the stopper portion of the stopper fits into the bush every time the gas valve is repeatedly pressed to pour draft beer. For this reason, when repeatedly used, the spring property deteriorates, and at the end the protrusion length due to the impact resilience of the stopper when the gas valve returns is insufficient, and the draft beer barrel fitting is capped without releasing the residual pressure in the draft beer barrel body. There is a possibility that the stopper portion cannot engage with the inner end surface of the mouthpiece or the inner surface of the upper mirror of the draft beer barrel main body when trying to remove it from the inside, which is inferior in safety. Further, as described above, since the stopper is liable to deteriorate the spring property, in order to alleviate this, the stopper, the bush and the like require high processing and assembling accuracy, which is expensive.

Further, for example, without opening the gas valve, the bush is forcibly rotated and the tip of the stopper is placed on the inner end surface of the mouthpiece, or the inner surface of the top mirror of the draft beer barrel main body and the opening portion of the bush. When you try to remove the fitting such as the bush from the mouthpiece while bending it horizontally with the lower edge, especially when the residual pressure in the body of the beer barrel is high, at the moment when the male thread of the bush separates from the female thread of the mouthpiece, the bush The residual pressure in the body of the draft beer biases the fittings in the direction that pops out from the mouthpiece, and the tip of the stopper that is deformed as described above buckles and bends downward at the end, which may cause the fittings to pop out from the mouthpiece. is there.

The present invention solves the above-mentioned conventional problems, and can prevent the deterioration of the spring property of the stopper, and further prevent the stopper from being damaged when a load is applied to the stopper. Can therefore be
In addition to improving safety and economic efficiency by extending the service life, it is possible to reduce costs by not requiring strict processing and assembly accuracy, and to straighten the draft beer barrel body. An object of the present invention is to provide a fitting for a draft beer barrel, which can be incorporated by being inserted, and therefore, the workability of incorporating it into the draft beer barrel body can be improved.

[0011]

Means for Solving the Problems The technical means of the present invention for achieving the above-mentioned object is to provide an engaging portion for rotating operation, which is formed on a bush that is detachably screwed to a mouthpiece of a draft beer barrel body. An opening formed in the bush and a gas flow path of the bush are closed by a biasing force of a spring, and a metal valve provided so as to move together with a gas valve that can be opened against the biasing force of the spring. The stopper includes a stopper, the stopper is continuously provided on the hanging portion, and at least at the open position of the gas flow path by the gas valve when the residual pressure in the draft beer barrel is extracted, the stopper is elastically deformed. The stopper portion is retracted to the bush side, and at least at the position where the gas flow path is closed by the gas valve, the stopper portion is prevented from coming out from the opening portion due to the impact resilience. When the stopper is released from the mouthpiece by the rotation of the bush in the stopper protruding state, the stopper portion is at least the inner end face of the mouthpiece in the compression direction of the metal, or the upper mirror of the draft beer barrel body. It is configured so as to be in contact with the inner side surface and restrict the protrusion of the bush or the like.

In the above technical means, the stopper can be formed by various spring materials, but it is particularly preferable that the stopper is formed by a leaf spring material. Further, the stopper portion is provided with a protruding portion connected to the hanging portion. It is preferable to form it by bending it in the right angle direction.

According to the present invention, the jig is used to retract the gas valve together with the stopper against the elasticity of the spring to open the gas flow path to release the residual pressure in the body of the beer barrel, and the stopper portion of the stopper is elastically deformed. With this, the bush is retracted to release the retaining state, and by rotating the jig in this released state, the bush etc. can be integrally rotated via the engaging part and removed from the mouthpiece of the draft beer barrel body. it can. Also, even if the bush is forcibly rotated without releasing the residual pressure in the draft beer barrel without opening the gas valve, the stopper part of the stopper is the inner end surface of the mouthpiece or the inner surface of the top mirror of the draft beer barrel body. Since it is abutted against the metal at least in the compression direction of the metal and deformation is prevented, the fitting of the bush or the like can be prevented from jumping out from the base. As described above, the opening state of the gas valve cannot be released without releasing the stopper from the mouthpiece or the like by the stopper, so that the residual pressure in the draft beer barrel body can be reliably released at the time of removal. Also, even if the gas flow passage is repeatedly opened and closed with the pouring of draft beer, the stopper part of the stopper does not come into contact with the lower edge of the open part to prevent deformation, or the stopper part is in a retaining state. Even when retracted to the release position, the bending of the hanging portion can be used to suppress the deformation, so that the deterioration of the spring property can be prevented, and strict processing and assembly accuracy are unnecessary. be able to. Also,
It can be incorporated by inserting it straight into the draft beer barrel body.

[0014]

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 to 8 show a fitting for a draft beer barrel according to a first embodiment of the present invention, FIG. 1 is a cross-sectional view showing a state in which a gas passage is closed, and FIG. 2 is a diagram showing an opening of the gas passage when pouring draft beer. Fig. 3 is a cross-sectional view of a state in which the gas flow path is opened when the fitting is removed, Fig. 4 is a cross-sectional view of the fitting that is restricted from protruding, and Figs. 5, 6, 7, and 8 are respectively It is a front view for demonstrating the positional relationship of the mouthpiece, bush, and stopper in FIG. 1, FIG. 2, FIG. 3, and FIG.

As shown in FIGS. 1 to 8, a hole 3 is formed in the central portion of the upper mirror 2 of the draft beer barrel main body 1 made of stainless steel, and the base of the mouthpiece 4 is fixed to the edge of the hole 3 by welding. There is. A bush 5 is inserted into the upper portion of the mouthpiece 4 and the draft beer barrel main body 1, and a male screw 7 formed on the outer circumference of the upper portion of the bush 5 is detachably screwed to a female screw 6 formed on the inner circumference of the upper portion of the mouthpiece 4. . A ring-shaped packing 10 is interposed and sealed between an annular projecting portion 8 formed on the inner circumference of the base of the mouthpiece 4 and an annular step 9 formed on the outer circumference of the intermediate portion of the bush 5. The upper part of the down tube 11 is inserted into the bush 5, and the lower end of the down tube 11 is located near the bottom of the draft beer barrel body 1 and is movable in the axial direction. Down tube 1
1 has a collar-shaped portion 12 at the upper end portion, and the lower portion of a gas valve 13 whose outer peripheral portion is made of rubber is fixed by press fitting or the like inside the upper end portion, and a step portion 14 at the outer periphery of the middle portion of the gas valve 13 is collar-shaped. It is in contact with the upper surface of the portion 12.

The stopper 15 is made of a leaf spring material such as metal and is composed of a ring-shaped portion 16, a hanging portion 17 and a stopper portion 18. As an example, the base end portion of the hanging portion 17 is connected to a part of the outer periphery of the ring-shaped portion 16 by the curved portion 19. The hanging portion 17 has a base portion 20 side and a tip portion 21.
To the side, the intermediate part 22 is formed by two curved bent parts 23, 24 and 25, 26, respectively.
It is projected outward by a and 22b. Inclined portion 22 on the tip (lower) 21 side of intermediate portion 22 of hanging portion 17
Stoppers 18 are continuously provided on both sides of the position close to the b so as to project outward in the perpendicular direction.

Each stopper portion 18 is an intermediate portion 2 of the hanging portion 17.
The projecting portions of the longitudinal edges on both sides of 2 are bent in a right angle direction so as to be connected to the intermediate portion 22 of the hanging portion 17. Then, the upper edge 18a of each stopper portion 18 is gradually inclined upward as it reaches the tip side, the lower edges 18b, 18c of the base side and the tip side are also inclined in the same manner as described above, and the base side The lower edge 18b is steeply inclined, and the lower edge 18c on the tip end side is gently inclined. By setting the inclination angle of the lower edge of the stopper portion 18 in two stages in this way, the stopper portion 18 can obtain a desired height even on the tip end side thereof, and therefore the stopper portion 18 can have a height higher than the height. The width is set to be narrow.

The stopper 15 has a ring-shaped portion 16 at the base thereof.
Is fitted to the upper end of the down tube 11 in contact with the lower surface of the collar-shaped portion 12. Protrusions 27 are formed at a plurality of locations inside the lower end of the bush 5, and the engaging portions 29 of the retailing disc 28 are engaged with the protrusions 27 on the outer periphery of the down tube 11. The retailing disc 28 can guide the movement of the down tube 11 in the axial direction. The inside of the bush 5 and the inside of the draft beer barrel body 1 are communicated with each other by an opening portion 30 formed in the lower portion of the bush 5, a notch 31 formed in the retailing disc 28, and a hole (not shown) formed in the bush 5.

A compression spring 32 is provided on the outer circumference of the down tube 11 between the ring-shaped portion 16 of the stopper 15 and the retailing disk 28, and the elasticity of the compression spring 32 causes the stopper 15, the down tube 11 and the gas valve 13 to be integrated. Is biased upwards. As a result, the upper outer peripheral portion made of rubber of the gas valve 13 is brought into contact with the valve seat 33 provided inside the bush 5, and the gas flow path 3
4 is closed, and the stopper portion 18 of the stopper 15 is projected outward from a vertical long hole 35 for buckling restriction as an opening formed as a pair in the lower portion (inward side) of the bush 5, and then from the base 4. Is in a retaining state (locked state) (see FIG. 1).

Then, in a non-operating state in which the stopper portion 18 projects obliquely upward from the middle portion of the elongated hole 35, the stopper portion 18 and the inner end surface of the mouthpiece 4 (or the inner side surface of the upper mirror 2).
Is set to be narrower than the height of the male screw 6 of the mouthpiece 4 and the male screw 7 of the bush 5, and when the bush 5 is rotated, the stopper portion is released before the screwed state of the female screw 6 and the male screw 7 is released. The tip of the upper edge 18a of 18 is engaged with the inner end surface of the base 4 (or the inner surface of the upper mirror 2) (see FIG. 4). In this state, the hanging part 17
The base portion 20 is circumscribed so as to circumscribe the compression spring 32,
The intermediate portion 22 of the hanging portion 17 is separated from the compression spring 32 and is arranged so as to approach the inner surface of the bush 5, so that the hanging portion 1
The distal end 21 of the bushing 7 is inserted along the wall surface on the inner side of the notch 31 of the retailing disc 28 in the opening 30 between the protrusions 27 of the bush 5.

Then, the gas valve 13 is pressed from above and the gas valve 13, the down tube 11 and the stopper 15 are lowered against the elasticity of the compression spring 32, so that the gas valve 13 is separated from the valve seat 33 and the gas flow path is formed. Three
4 is opened and the beer barrel main body 1 is opened to the outside through the gas flow path 34. At this time, in the state where the bush 5 and the like are lowered and the gas flow path 34 is opened at the time of pouring (injecting) draft beer which will be described later, as in the non-operating state, the stopper 1
5 is not deformed, the stopper portion 18 is projected obliquely upward from the elongated hole 35 in a retaining state, and the base side lower edge 18b of the stopper portion 18 is maintained in a non-contact state with the lower edge of the elongated hole 35. The stopper 1 is set in this state.
5, the tip 21 of the hanging portion 17 is the retailing disc 2
It is set so as to project downward from the notch 31 of 8 (see FIG. 2).

When the residual pressure in the draft beer barrel body 1 is removed and the bush 5 and the like are removed from the mouthpiece 4, the lower edge 18b on the base side of the stopper portion 18 is pushed by the lower edge of the elongated hole 35, and the hanging portion 17 It is set so that the stopper portion 18 is retracted to the state of being housed in the bush 5 by elastic deformation, and in this state, the hanging portion 17 of the stopper 15 reaches the position near the tip portion 21 of the intermediate portion 22 of the retailing disc 28. It is set so as to project downward from the notch 31 (see FIG. 3). At this time, the stopper 1
5, the upper bent portions 19, 23, 24 are displaced, the displaced portions are dispersed in three places and bend, and the hanging portion 17
Since the intermediate portion 22 is restricted by the compression spring 32 from being retracted, deterioration of the spring property is prevented.
Therefore, it is possible to eliminate the strict machining and assembling accuracy of the long holes 35 and the like.

Inside the upper part of the down tube 11, a beer valve 36 made of stainless steel is provided so as to be movable in the axial direction. Beer valve 3 in down tube 11
6, a step portion 37 and a beer valve 36 formed on the lower inner circumference
A compression spring 38 is interposed between and and the elasticity of the compression spring 38 urges the beer valve 36 upward. As a result, the beer valve 36 is brought into contact with the valve seat 39 made of rubber in the gas valve 13, and the beer flow path 40 is closed (see FIG. 1). Then, the beer valve 36 is pressed from above and is lowered against the elasticity of the compression spring 38, so that the beer valve 36 is moved to the valve seat 39.
The beer flow passage 40 is opened apart from the inside, and the inside of the draft beer barrel body 1 is opened to the outside via the beer flow passage 40. Inside the upper end portion (outer end portion) of the bush 5, engaging portions 41 for rotating operation are formed at one or more places.

The jig 43 used for the opening operation of the gas valve 13 and the rotating operation of the bush 5 in the fitting 42 having the above-described structure is the gas valve 1 as shown by the chain line in FIG.
A pressing operation unit 44 for pressing the 3 and a rotation operation unit 45 for rotating the bush 5 are integrally provided. The pressing operation part 44 is formed with a small diameter so as to press the gas gas valve 13 through the gas flow path 34 of the bush 5, and the rotation operation part 45 is formed with a large diameter so that it can be inserted inside the upper part of the bush 5. An engaging portion (not shown) capable of engaging with the engaging portion 41 of the bush 5 is formed in the rotation operating portion 45. A shaft portion 46 is provided at the center of the upper surface of the rotation operation portion 45.
And a handle 47 are integrally provided on the shaft portion 46.

The operation of the above arrangement will be described below. First, the operation of pouring draft beer will be described. In the state shown in FIGS. 1 and 5, a dispenser (not shown) is attached to the base 4 to press the gas valve 13,
Gas valve 13, down tube 11 and stopper 1
5 is lowered against the elasticity of the compression spring 32, and
The beer valve 36 is pressed to lower the beer valve 36 against the elasticity of the compression spring 38. Along with this, the gas valve 13 is separated from the valve seat 33 of the bush 5 to open the gas flow path 34 (see FIG. 2), and the beer valve 3
6 is separated from the valve seat 39 of the gas valve 13 to open the beer passage 40. Then, by feeding gas into the draft beer barrel main body 1 from the gas flow passage 34, the draft beer in the draft beer barrel main body 1 can be poured out from the beer flow passage 38 through the down tube 11 to the outside.

After the draft beer is poured out, the dispenser is provided with a base 4
And releasing the pressed state of the gas valve 13 and the beer valve 36, the gas valve 13, the down tube 11 and the stopper 15 are lifted by the restoring elasticity of the compression spring 32 as shown in FIG.
3 can be brought into contact with the valve seat 33 to close the gas passage 34, and the beer valve 36 can be raised by the restoring elasticity of the compression spring 38 to come into contact with the valve seat 39 to close the beer passage 40. it can. As described above, after the draft beer is poured out, the fitting 42 can be returned to wait for the draft beer to be poured out. Further, similarly to the above, draft beer can be poured into the draft beer barrel body 1.

Next, the fitting removing operation will be described. First, as shown in FIG. 3, the pressing operation part 44 of the jig 43 is inserted into the gas flow path 34 of the bush 5, and the rotation operation part 45 is inserted into the upper part of the bush 5 so that the engaging part is inserted into the bush 5. Is engaged with the engaging portion 41 of the. Then, the gas valve 13 is pressed by the pressing operation portion 44, and the gas valve 13, the down tube 11, the stopper 15 and the like are lowered integrally against the elasticity of the compression spring 32 deeper than when the beer is poured. Along with this, the gas valve 13 is separated from the valve seat 33 of the bush 5 to open the gas flow passage 34, and the residual pressure in the draft beer barrel body 1 can be released to the outside via the gas flow passage 34, and the stopper can be used. The lower edge 18b of the stopper portion 15 on the base side is provided with a long hole 3 of the bush 5.
5 is slid in a state of being pressed by the lower edge, and the stopper portion 18 is housed in the bush 5 in a pressure contact state as shown in FIGS. 3 and 7 by the elastic deformation (flexure) of the hanging portion 17 as described above. It can be retracted to release the retaining state (lock state).

While maintaining the above-mentioned released state, the upper stepped portion 48 of the bush 5 is pressed by the lower surface of the rotary operation portion 45 of the jig 43 to release the bite between the female screw 6 and the male screw 7 and the jig 43.
When the rotating operation of the bush 5 is performed,
Rotational force can be applied to the bush 5 via the engaging portion 41 of. At this time, the compression spring 32 is in a compressed state,
Due to the frictional resistance and the frictional resistance due to the pressure contact of the stopper portion 18 of the stopper 15 with the lower edge of the elongated hole 35 of the bush 5, the gas valve 13, the down tube 11, the stopper 1
5 and the like can be rotated integrally with the bush 5, and the screws 42 can be loosened to remove the fitting 42 from the base 4. At this time, since the residual pressure in the draft beer barrel body 1 is released to the outside as described above, the fitting can be safely removed from the base 4. Therefore, the draft beer barrel main body 1 and the fitting 42 can be cleaned and repaired.

Before the fitting 42 is removed, the stopper portion 18 of the stopper 15 projects outward from the elongated hole 35 of the bush 5 in the state of preventing it from coming off (see FIGS. 1 and 5). Therefore, even if the bush 5 or the like is rotated in the direction in which the screws 6 and 7 are loosened with respect to the mouthpiece 4 as shown in FIGS. 4 and 8 without performing the opening operation of the gas valve 13 in this state, Since the tip end of the upper edge 18a of the stopper portion 18 is engaged with the inner end surface of the mouthpiece 4 (or the inner side surface of the upper mirror 2) before the 7 is disengaged, the fitting 42 is retained in the draft beer barrel. There is no risk of being blown out by the residual pressure in the main body 1. At this time, the distal end portion 21 of the hanging portion 17 of the stopper 15 is restricted from moving backward by the inner wall of the notch 31 of the retailing disc 28.
Moreover, the stopper portion 18 is prevented from further deforming due to the lateral deformation of the stopper portion 18, that is, the buckling being restricted, and the stopper portion 18 is prevented from further deforming, and the fitting 42 projects further from the base 4. Can be regulated.

Next, a second embodiment of the present invention will be described. 9 to 16 show fittings for a draft beer barrel according to a second embodiment of the present invention, FIG. 9 is a cross-sectional view showing a state in which a gas flow passage is closed, and FIG. 10 is a view showing opening the gas flow passage when pouring draft beer. FIG. 11 is a sectional view showing a state in which the gas flow path is opened at the time of removing the fitting, FIG. 12 is a sectional view showing a state where the fitting is prevented from protruding, and FIGS. 13, 14, 15, and 16 are respectively FIG. 13 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIGS. 9, 10, 11, and 12.

The feature of this embodiment lies in FIG.
As shown in FIG. 16, the lower end portion of the bush 5 (stopper 1
5 or the like may be an intermediate portion), and a tapered recessed portion 5a having a gradually decreasing diameter is formed by drawing to reach the lower end side. When the fitting 42 is detached from the mouthpiece 4, the stopper 15 has a hanging portion. The curved bent portion 26 of 17 is slid in a pressure contact state along the inclined inner side surface of the recessed portion 5a of the bush 5, and at the recessed portion 5a,
The stopper portion 18 of the stopper 15 is configured to retract toward the inside of the bush 5, and since the other configurations are similar to those of the first embodiment,
The same parts are designated by the same reference numerals and the description thereof will be omitted.

In the present embodiment, the stopper portion 18 of the stopper 15 is retracted into the recessed portion 5a of the bush 5 so as to be housed in the elongated hole 35 of the bush 5 as described above. Even if the portion 18 projects a little longer than the recessed portion 5a of the bush 5, the fitting 42 of the bush 5 or the like can be easily detached by using the recessed portion 5a by slightly inclining the fitting 42 such as the bush 5 at the end portion to be removed from the base 4. Since the protrusion length of the stopper portion 18 from the bush 5 can be set longer when the fitting 42 is raised, the stopper portion 18 can be more reliably prevented from coming off, and the processing accuracy of the stopper 15 is not required. It can be manufactured at low cost. The recessed portion 5a of the bush 5 according to the present embodiment may be partially recessed at a portion corresponding to the stopper portion 18 of the stopper 15 without recessing the entire circumference as described above.

According to the present invention, the down tube 11 is fixed to the bush 5 and the gas valve is opened to supply gas from the outer peripheral portion of the gas valve into the main body of the draft beer barrel 1 without providing a beer valve separately. The draft beer barrel main body 1 can also be implemented as a type that is fed through the inside of the gas valve. In addition, when the beer is poured or poured, the lower edge of the stopper portion 18 of the stopper 15 contacts the lower edge of the elongated hole 35 of the bush 5 so that the beer 5 is slightly retracted or retracted to the unlocked state. Even in this case, the bending of the hanging portion 17 is utilized and the deformation is suppressed to a small extent, so that the deterioration of the spring property is prevented. Further, in the above embodiment, when the bush 5 is forcibly rotated to separate the male screw 7 of the bush 5 from the female screw 6 of the mouthpiece 4, the stopper portion 18 of the stopper 15 is removed from the mouthpiece 4 of the mouthpiece 4 before the male screw 7 is removed. The fitting 42 is brought into contact with the inner end surface (or the inner surface of the upper mirror 2) to prevent the fitting 42 from jumping out due to the residual pressure in the draft beer barrel body 1. However, the male screw 7 of the bush 5 is the female screw 6 of the base 4. When the fitting 42 starts to pop out from the mouthpiece 4, the stopper portion 18 of the stopper 15 is brought into contact with the inner end surface of the mouthpiece 4 (or the inner side surface of the upper mirror 2) so that the residual pressure in the draft beer barrel body 1 is reduced. Therefore, the fitting 42 may be restricted so as not to project further. In addition, the present invention can be variously changed in design without departing from the basic technical idea.

[0034]

As described above, according to the present invention, the jig retreats the gas valve together with the stopper against the elasticity of the spring to open the gas flow path to release the residual pressure in the draft beer barrel body. The stopper part of the stopper is elastically retracted to the bush side to release the retaining state, and by rotating the jig in this released state, the bush etc. are integrally rotated through the engaging part, and the draft beer barrel It can be removed from the base of the body. Also, even if the bush is forcibly rotated without releasing the residual pressure in the draft beer barrel without opening the gas valve, the stopper part of the stopper is the inner end surface of the mouthpiece or the inner surface of the top mirror of the draft beer barrel body. Since it is abutted against the metal at least in the compression direction of the metal and deformation is prevented, the fitting of the bush or the like can be prevented from jumping out from the base. In this way, the opening state of the gas valve cannot be released without releasing the stopper from the mouthpiece, so that the residual pressure in the draft beer barrel body can be reliably released at the time of removal. Therefore, safety can be improved by always allowing safe removal. Also, even if the gas flow passage is repeatedly opened and closed with the pouring of draft beer, the stopper part of the stopper does not come into contact with the lower edge of the open part to prevent deformation, or the stopper part is in a retaining state. Even when retracted to the release position, the bending of the hanging portion can be used to suppress the deformation, so that the deterioration of the spring property can be prevented and the economical efficiency can be improved by extending the life. Further, it is possible to eliminate the need for strict machining and assembling accuracy, and to reduce the cost. Further, since it can be incorporated into the draft beer barrel main body by inserting it linearly, it is possible to improve the assembling workability.

Further, since the stopper is made of a leaf spring material, it can be easily deformed and restored, and the life can be further extended.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a fitting for a draft beer barrel according to a first embodiment of the present invention, in a state where a gas flow path is closed.

FIG. 2 is a cross-sectional view showing the same fitting and showing a state in which a gas flow path is opened when drafting beer.

FIG. 3 is a cross-sectional view showing the same fitting and showing a state in which a gas flow path is opened when removing the fitting.

FIG. 4 is a cross-sectional view showing the fitting and a state in which the fitting is restricted from protruding.

5 is a front view for explaining the positional relationship between the mouthpiece, the bush and the stopper in FIG. 1. FIG.

FIG. 6 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIG.

7 is a front view for explaining the positional relationship between the mouthpiece, the bush and the stopper in FIG.

FIG. 8 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIG.

FIG. 9 is a sectional view showing a fitting for a draft beer barrel according to a second embodiment of the present invention, in a state in which a gas flow path is closed.

FIG. 10 is a cross-sectional view showing the same fitting and showing a state in which a gas flow channel is opened when drafting beer.

FIG. 11 is a cross-sectional view showing the same fitting and showing a state in which a gas channel is opened when the fitting is removed.

FIG. 12 is a cross-sectional view showing the fitting and a state in which the fitting is prevented from protruding.

13 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIG.

14 is a front view for explaining the positional relationship between the mouthpiece, the bush and the stopper in FIG.

FIG. 15 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIG.

16 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIG.

[Explanation of symbols]

 1 Draft beer barrel main body 2 Base 5 Bushing 11 Down tube 13 Gas valve 15 Stopper 17 Hanging part 18 Stopper part 32 Compression spring 34 Gas flow path 35 Elongated hole (opening part) 36 Beer valve 38 Compression spring 40 Beer flow path 41 Engagement part 42 Fitting 43 jig

Claims (2)

[Claims] 1. An engaging portion for rotating operation, which is formed on a bush that is detachably screwed into a mouthpiece of a draft beer barrel main body,
A metal stopper provided so that the opening formed in the bush and the gas flow path of the bush are closed by the biasing force of the spring and can move together with the gas valve that can be opened against the biasing force of the spring. The stopper comprises a stopper portion continuously provided on the hanging portion, and at least at the open position of the gas flow path by the gas valve when the residual pressure in the draft beer barrel main body is extracted, the stopper portion is elastically deformed so that When the stopper portion is retracted toward the bush side and at least at the position where the gas flow path is closed by the gas valve, the stopper portion is projected outward from the open portion by the repulsion elasticity, and the stopper portion is in the retainer protruding state. At the time of separation from the base due to rotation of the bush,
A fitting for a draft beer barrel configured such that the stopper portion is brought into contact with the inner end surface of the mouthpiece or the inner surface of the upper mirror of the draft beer barrel main body in the compression direction of at least a metal so that a bush or the like is projected and regulated. 2. The fitting for a draft beer barrel according to claim 1, wherein the stopper is formed of a leaf spring material, and the stopper portion is formed by bending a protruding portion continuous to the hanging portion in a perpendicular direction.