JPH09255096A - Fitting for raw beer barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety when a fitting is taken out of a nozzle, to make a stopper long-life and to improve workability for assembling. SOLUTION: In a stopper 15 consisting of a sheet spring material, the first and the second stopper parts 21 and 22 are successively provided on the top part of a rising-up part 18. The stopper 15 integrally with a gas valve 13, etc., is provided movably and the first and the second stopper parts 21 and 22 are projected from a hole 33 of a bush 5. The gas valve 13, the stopper 15, etc., are lowered and a gas flow passage 32 is opened to remove the remaining pressure in a raw beer barrel main body 1 and the first and the second stoppers 21 and 22 are stored in the bush 5 by elastic deformation to release a pull stopping condition and the bush, etc., are rotated and screws 6 and 7 are unfastened and taken out of a nozzle 4. When the bush 5, etc., are forcibly taken out from the nozzle 4, the first stopper part 21 is brought thereby into contact with the inner end face of the nozzle 4 and back-up is performed by means of the second stopper part 22 in the compression direction of a metal to control flying out caused by the remaining pressure in the raw beer barrel main body 1.

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. Since it is formed so as to be separated from the portion and close to the base side, for example, without performing the opening operation of the gas valve,
Forcibly rotate the bush, and while bending the tip of the stopper in the horizontal direction between the inner end surface of the mouthpiece or the inner surface of the top mirror of the draft beer barrel main body and the lower edge of the open portion of the bush, fit the bush, etc. When trying to remove from the mouthpiece, especially when the residual pressure inside the draft beer barrel body is high, at the moment when the male thread of the bush separates from the female thread of the mouthpiece, the fitting such as the bushing is in the direction that pops out of the mouthpiece due to the residual pressure in the body of the draft beer barrel. There is a risk that the tip of the stopper that is biased and deformed as described above will buckle and eventually bend downward, causing the fitting to pop out of the base.

Further, the displacement portion (fulcrum portion) of the stopper is only at one portion of the folded portion. On the other hand, every time the gas valve is repeatedly pressed and the draft beer is poured out, the inclined portion is pressed so that the stopper portion of the stopper fits into the bush. Due to this, the displacement concentrates on the folded part, so if it is used repeatedly, the spring property deteriorates, and finally the projecting length due to the impact resilience of the stopper when the gas valve returns will be insufficient, and the residual pressure in the main beer barrel When trying to remove the draft beer barrel fitting from the mouthpiece without pulling out, the stopper portion may not be able to engage with the inner end surface of the mouthpiece or the inner surface of the upper mirror of the body of the beer barrel, resulting in poor safety. Further, as described above, since the stopper easily deteriorates in springiness, in order to alleviate this, the stopper,
High processing and assembling accuracy are required for bushes, etc., which makes them expensive.

The present invention solves the above-mentioned conventional problems, and prevents the stopper from being damaged when a load is applied to the stopper and reliably restricts the protrusion of the fitting. Not only can safety be improved and economic efficiency can be improved by extending the service life, cost can also be reduced, and it can also be incorporated by linearly inserting it into the draft beer barrel body. It is an object of the present invention to provide a fitting for a draft beer barrel that can improve the workability of incorporating it into the barrel body.

[0011]

Means for Solving the Problems The technical means of the present invention for achieving the above object is to provide an opening formed in a bush which is detachably screwed into a mouthpiece of a draft beer barrel body, and a gas of the bush. A first stopper portion and a second stopper portion, which are provided so as to be closed by the biasing force of the spring and move together with the gas valve that can be opened against the biasing force of the spring and which can project from the opening portion, are provided. A stopper made of metal having, wherein the stopper is at least one of the first and second stopper portions at an opening position of the gas flow path by the gas valve at the time of extracting residual pressure in the draft beer barrel main body. The first and second stopper portions are retracted toward the bush side due to elastic deformation caused by being pressed by the lower edge of the open portion, and at least the gas valve. Therefore, at the closed position of the gas flow path, the first and second stopper portions are projected outward from the open portion in a retaining state by the impact resilience, and the retaining protrusion of the first and second stopper portions is prevented. When the bush is detached from the mouthpiece by the rotation of the bush in a state, the first 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.
The stopper portion is backed up by the second stopper portion in the metal compression direction so as to restrict the bush and the like from protruding.

Another technical means of the present invention for achieving the above object is the above technical means, wherein the open portion of the bush corresponds to the wide portion corresponding to the first stopper portion and the second portion of the stopper. Corresponding to the stopper portion, having a narrow groove-shaped portion formed deeper than the wide portion, at least at the open position of the gas flow path by the gas valve at the time of residual pressure removal in the draft beer barrel body, substantially the above When the first stopper portion is pressed by the lower edge adjacent to the upper opening portion of the groove-like portion, the stopper is elastically deformed so as to retract the first and second stoppers to the bush side. It is configured to.

Further, in the above technical means, the stopper portion is continuously provided such that the hanging portion and the rising portion are spaced from each other via the folding portion, and the first stopper portion is bent to the upper end portion of the rising portion. The second stopper portion is continuously provided on the upper side of the rising portion at a right angle below the first stopper portion so as to gradually approach the mouthpiece side as it reaches the tip side. Is preferred. Further, it is preferable that the protrusion length of the second stopper portion is shorter than the protrusion length of the first stopper portion. Further, it is preferable that the inner end side of the stopper is housed inside the bush. Further, the stopper can be formed of various spring materials, but it is particularly preferable to form it by a leaf spring material.

According to the present invention, the gas valve is retracted together with the stopper or the like against the elasticity of the spring, the gas flow path is opened to release the residual pressure in the body of the draft beer barrel, and the first and The second stopper part is retracted to the bush side to release the retaining state, and in this released state, the fittings such as the bush are integrally rotated,
It can be removed from the base of the draft beer barrel. In addition, even if the bushing is forced to rotate without releasing the residual pressure in the draft beer barrel without opening the gas valve and the fittings such as the bush are to be taken out from the draft beer barrel body, the first stopper portion of the stopper Is the inner end surface of the base,
Alternatively, the second stopper part backs up the metal in the compression direction of the draft beer barrel while it is in contact with the inner surface of the top mirror, and deformation is prevented, so that fittings such as bushes are prevented from jumping out of the mouthpiece. be able to. If you do not open the gas valve in this way, you can not release the stopper from the stopper etc., so you can surely release the residual pressure in the draft beer barrel body at the time of removal, and also damage the stopper. Can be prevented. Further, it can be incorporated into the draft beer barrel body by linearly inserting it.

[0015]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 to 8 show a fitting for a draft beer barrel according to an embodiment of the present invention, FIG. 1 is a sectional view showing a state in which a gas flow passage is closed, and FIG. 2 is a state in which a gas flow passage is opened when pouring draft beer. FIG. 3, FIG. 3 is a cross-sectional view in which the gas flow path is opened when the fitting is removed, FIG. 4 is a cross-sectional view in which the fitting is prevented from protruding, and FIG. 5, FIG. 6, FIG. 7, and FIG. FIG. 5 is a front view for explaining the positional relationship between the mouthpiece, the bush, and the stopper in FIGS. 2, 3, and 4.

As shown in FIGS. 1 to 4, a hole 3 is formed in the central portion of the upper mirror 2 of the draft beer barrel 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. . An O-ring 10 is interposed and sealed between an annular protrusion 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. Down tube 11 in bush 5
The upper portion of the down tube 11 is inserted, and the lower end of the down tube 11 is located near the bottom portion of the draft beer barrel body 1 and is movable in the axial direction. The down tube 11 has a collar-shaped portion 12 at its upper end, and the lower portion of a gas valve 13 whose outer peripheral portion is made of rubber is fixed inside the upper end by press fitting or the like.
A step portion 14 on the outer periphery of the middle portion of the gas valve 13 is in contact with the upper surface of the collar portion 12.

The stopper 15 is made of a leaf spring material such as metal. The upper end portion (base end portion) of the hanging portion 17 is connected to the ring-shaped portion 16, and the rising portion 18 is provided at the lower end portion of the hanging portion 17 and the folded portion 19 is formed. Is connected to the hanging portion 17 with a space therebetween, and the bent portion 2 is provided at the upper end of the rising portion 18.
The first stopper portion 21 is continuously provided via 0. The first stopper portion 21 has a width similar to that of the hanging portion 17 and the rising portion 18, and is inclined so as to gradually separate from the hanging portion 17 and approach the base 4 side from the bent portion 20 to the tip side. ing. On both sides of the upper portion of the rising portion 18, the second stopper is provided below the first stopper portion 21.
Stopper portion 22 is provided so as to project in a right angle direction. The upper surface 22a of the second stopper portion 22 is inclined so as to face the lower surfaces on both sides of the first stopper piece 21 at a narrow interval, and the outer edge 22b is arcuate so that the width becomes gradually narrower toward the lower end side. The upper edge of the outer edge 22b on the wide side is retracted from the first stopper portion 21 to the bush 5 side. That is, the protruding length of the second stopper portion 22 is set to be shorter than the protruding length of the first stopper portion 21.

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. In the retainer 23, one end of the spacing plate 25 is continuously provided at a plurality of positions on the circumference of the spray regulation plate 24, and an engaging portion 26 is continuously provided at the other end of each spacing plate 25. The receiving portions 27 are formed at a plurality of locations inside the lower end of the bush 5, and the engaging portions 26 of the retainer 23 are engaged with the receiving portions 27 on the outer periphery of the down tube 11 to separate the separating plate 25.
Is projected downward from the lower end open portion 28 of the bush 5, and the blow-up restricting plate 24 is arranged below the bush 5, that is, in the draft beer barrel main body 1. The retainer 23 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 an open portion 28 at the lower end of the bush 5, and a hole 2 formed in the bush 5.
It is connected by 9 etc.

A compression spring 30 is interposed between the ring-shaped portion 16 of the stopper 15 and the retainer 23 on the outer periphery of the down tube 11, and the elasticity of the compression spring 30 causes the stopper 15, the down tube 11 and the gas valve 13 to move.
Are integrally urged upward. As a result, the rubber outer peripheral portion of the gas valve 13 is brought into contact with the valve seat 31 provided inside the bush 5, the gas flow passage 32 is closed, and the first stopper portion 21 and the second stopper portion of the stopper 15 are closed. 22 is projected outward from a hole 33 as an opening formed in the lower portion (inward) of the bush 5 and is in a state (locked state) in which it is prevented from coming off from the base 4 (see FIG. 1). The first stopper portion 21 corresponds to the wide portion of the hole 33, and the second stopper portion 22 corresponds to the groove portion 33a which is deeper and narrower than the lower portions on both sides of the wide portion (FIG. 5). ~ See Figure 8).

The first stopper portion 21 and the second stopper portion 21
In a non-operating state in which the stopper portion 22 of FIG. 2 projects obliquely upward from the hole 33, the distance between the first stopper portion 21 and the inner end surface of the mouthpiece 4 (or the inner side surface of the upper mirror 2) is equal to the internal thread 6 of the mouthpiece 4 and the bush. 5 is set to be narrower than the height of the male screw 7, and when the bush 5 is rotated, the first stopper portion 21 causes the inner end surface of the base 4 (before the screwed state of the female screw 6 and the male screw 7 is released). Alternatively, it is engaged with the inner surface of the upper mirror 2 and comes into contact with the upper surface 22a of the second stopper portion 22 when the folded portion 20 falls in the horizontal direction. Further, in this state, the folded-back portion 19 side which is the inner end side of the stopper 15 is set to be housed inside 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 30, whereby the gas valve 13 is separated from the valve seat 31 and the gas flow path is formed. Three
2 is opened and the beer barrel body 1 is opened to the outside through the gas flow path 32. At this time, in the state where the bush 5 and the like are lowered and the gas flow path 32 is opened at the time of pouring (injecting) draft beer described later, the stopper 1
The lower edges of the first and second stoppers 21 and 22 on the base side are not in contact with the central lower edge 33b adjacent to the upper opening of the groove 33a in the hole 33 and the lower edge 33c of the groove 33a. It is set so that the state is maintained (the first stopper portion 2
It does not matter that the lower edge of No. 1 comes into contact with the central lower edge 33b of the hole 33 without being elastically deformed or is pressed so as to be slightly elastically deformed. ) Further, even in this state, the folded-back portion 19 side, which is the inner end side of the stopper 15, is set to be held in the state of being housed in the bush 5 (see FIG. 2).

When the residual pressure in the draft beer barrel body 1 is released and the bush 5 and the like are removed from the mouthpiece 4, first, the lower surface of the first stopper portion 21 on the base side is pushed by the lower edge 33b of the central portion of the hole 33. By elastic deformation, the first stopper portion 21 and the second stopper portion 22 are retracted into a state of being housed in the bush 5 (see FIG. 3). At this time, the stopper 15 first detects the folded portion 1
9 is displaced, the bent portion 20 is subsequently displaced, and the displaced portions are dispersed in two places. Further, since the displacement portions of the stopper 15 are dispersed in this way, deterioration of the spring property is prevented, so that strict machining and assembling accuracy of the stopper 15 and the hole 33 and the like can be eliminated.
As described above, only the first stopper portion 21 is pushed by the central lower edge 33b of the hole 33, or the first stopper portion 21 is pushed by the central lower edge 33b, and the second stopper portion 22 is pushed at the final stage. If the lower edge 33c of the groove 33a is pressed or brought into contact with the lower edge 33c, that is, the first stopper portion 21 is substantially pressed by the lower edge 33b of the central portion of the hole 33, the first Since the stopper portion 21 of is easily elastically deformed, the operation is easy and the spring property of the stopper 15 is not easily deteriorated. However, the outer edge 22b of the second stopper portion 22 is pushed by the lower edge 33c of the groove portion 33a. Alternatively, the first and second stopper portions 2
You may make it press both 1 and 22.

Inside the upper part of the down tube 11, a beer valve 34 made of stainless steel is provided so as to be movable in the axial direction. Beer valve 3 in down tube 11
4, a step portion 35 and a beer valve 34 formed on the lower inner circumference
A compression spring 36 is interposed between and, and the beer valve 34 is urged upward by the elasticity of the compression spring 36. As a result, the beer valve 34 is brought into contact with the valve seat 37 made of rubber in the gas valve 13, and the beer flow path 38 is closed (see FIG. 1). Then, the beer valve 34 is pressed from above and is lowered against the elasticity of the compression spring 36, whereby the beer valve 34 is moved to the valve seat 37.
The beer flow path 38 is opened apart from the inside of the draft beer barrel body 1, and the inside of the draft beer barrel main body 1 is opened to the outside via the beer flow path 38. Inside the upper end portion (outer end portion) of the bush 5, engagement portions 39 for rotating operation are formed at one or more places.

The jig 41 used for the opening operation of the gas valve 13 and the rotating operation of the bush 5 in the fitting 40 having the above-described structure is the gas valve 1 as shown by the chain line in FIG.
A pressing operation part 42 for pressing the pressing member 3 and a rotation operation part 43 for rotating the bush 5 are integrally provided. The pressing operation part 42 is formed to have a small diameter so as to press the gas gas valve 13 through the gas passage 32 of the bush 5, and the rotation operation part 43 is formed to have a large diameter so as to be inserted inside the upper part of the bush 5. An engaging portion (not shown) capable of engaging with the engaging portion 39 of the bush 5 is formed on the rotation operating portion 43. A shaft portion 44 is provided at the center of the upper surface of the rotation operation portion 43.
And a handle 45 are integrally provided on the shaft portion 44.

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,
As shown in FIGS. 2 and 6, the gas valve 13, the down tube 11, and the stopper 15 are lowered against the elasticity of the compression spring 30, and the beer valve 34 is pressed,
The beer valve 34 is lowered against the elasticity of the compression spring 36. Accordingly, the gas valve 13 separates from the valve seat 31 of the bush 5 to open the gas passage 32, and the beer valve 34 separates from the valve seat 37 of the gas valve 13 to open the beer passage 38. Then, by feeding the gas into the draft beer barrel main body 1 from the gas flow channel 32, the draft beer in the draft beer barrel main body 1 can be poured to the outside from the beer flow channel 38 via the down tube 11.

After the draft beer is poured out, the dispenser is provided with a base 4
1 to release the pressed state of the gas valve 13 and the beer valve 34, the gas valve 13, the down tube 11 and the stopper 15 are lifted by the restoring elasticity of the compression spring 30 as shown in FIG.
3 can be brought into contact with the valve seat 31 to close the gas passage 32, and the beer valve 34 can be raised by the restoring elasticity of the compression spring 36 to come into contact with the valve seat 37 to close the beer passage 38. it can. In this way, after the draft beer is poured out, the fitting 40 can be returned so that the draft beer can be waited for. Further, similarly to the above, draft beer can be poured into the draft beer barrel body 1. When injecting draft beer, the draft beer barrel body 1 is inverted, but the draft beer that is about to be spouted from the bush 5 is retained in the retainer 23.
It is possible to smoothly regulate the draft beer surface that is being poured into the draft beer surface without dropping the draft beer surface with a large drop.

At the time of the above-mentioned pouring, the lower surface of the first stopper portion 21 of the stopper 15 does not come into contact with the central lower edge 33b of the hole 33 of the bush 5 or simply comes into contact therewith, and also the outer edge of the second stopper piece 22. The groove portion 3 having the hole 33 is the portion 22b.
Stopper 15 so that it does not contact the lower edge 33c of 3a.
By preventing elastic deformation of the stopper 15, it is possible to eliminate or reduce the deformation of the stopper 15 when the draft beer that is frequently operated is dispensed, to prevent deterioration of the spring property and improve durability. Even if the gas valve 13, the down tube 11, and the stopper 15 are moved down against the elasticity of the compression spring 36 with a stroke slightly longer than the above, the outer edge portion 22b of the second stopper portion 22 still has the lower edge of the groove portion 33b. If the lower surface of the first stopper portion 21 contacts the lower edge 33b of the central portion of the hole 33 before contacting the stopper portion 33c, the stopper portion 15 can be easily elastically deformed and restored. Then, the stopper 15 has the folded portion 1 as described above.
Since the displacements are dispersed at two positions, that is, the bent portion 9 and the bent portion 20, it is possible to prevent the deterioration of the spring property and obtain a reliable retaining state for a long period of time.

Next, the operation of removing the fitting 40 will be described. First, as shown in FIG. 3, the pressing operation part 42 of the jig 41 is inserted into the gas flow path 32 of the bush 5, and the rotation operation part 43 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 39 of. Then, the gas valve 13 is pressed by the pressing operation unit 42, 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 30 deeper (with a longer stroke) than when the draft beer is poured. . Along with this, the gas valve 13 is separated from the valve seat 31 of the bush 5 to open the gas flow passage 32, and the residual pressure in the draft beer barrel main body 1 can be released to the outside via the gas flow passage 32, and the stopper can be provided. The lower surface of the first stopper portion 21 of 15 is pressed by the lower edge 33b of the central portion of the hole 33 of the bush 5 (the outer edge 22b of the second stopper portion 22 is pressed by the lower edge 33c of the groove portion 33a, or 33c, and the first and second stopper portions 21 and 22 are elastically deformed (flexed) by the displacement of the folded portion 19 and the folded portion 20 of the stopper 15 as shown in FIGS. 3 and 7. It is possible to release the retaining state (lock state) by retracting the bush 5 so that the bush 5 is press-fitted.
At this time, the protruding length of the second stopper portion 22 is equal to the first length.
Since it is set to be shorter than the protruding length of the stopper portion 21, the stopper 15 can be retracted to reduce the deformation amount of the stopper 15 to release the retaining state of the fitting 40. Even if the space is small, it can be retracted so as to reliably release the retaining state.

While maintaining the above-mentioned released state, the upper stepped portion 46 of the bush 5 is pressed by the lower surface of the rotation operating portion 43 of the jig 41 to release the bite between the female screw 6 and the male screw 7, and thereby the jig 41.
When the rotating operation of the bush 5 is performed,
Rotational force can be applied to the bush 5 via the engaging portion 39 of. At this time, the compression spring 30 is in a compressed state,
The frictional resistance and the lower edges 33b and 33c of the hole 33 of the bush 5 of the first and second stopper portions 21 and 22 of the stopper 15.
The gas valve 13, the down tube 11, the stopper 15 and the like are integrally rotated with the bush 5 by the frictional resistance due to the pressure contact with the bushing 5, and the screws 6 and 7 are loosened to fit the fitting 40.
Can be removed 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 40 can be safely removed from the base 4. Therefore, the draft beer barrel body 1 and the fitting 40 can be cleaned, repaired, and the like.

Before the fitting 40 is removed, as described above, the first and second stopper portions 21 and 22 of the stopper 15 project outward from the hole 33 of the bush 5 in a retaining state (see FIG. 1). ). Therefore, in this state, without performing the opening operation of the gas valve 13,
As shown in FIG. 8, even if the bush 5 or the like is rotated with respect to the mouthpiece 4 in a direction in which the screws 6 and 7 are loosened, the first stopper portion 21 does not move the inner end surface of the mouthpiece 4 before the screws 6 and 7 are removed. (Or the inner surface of the upper mirror 2) and the first stopper portion 21 is deformed so as to be slightly tilted in the horizontal direction, the lower surfaces on both sides contact the upper surface 22a of the second stopper portion 22, Second
The stopper 22 backs up the metal in the compression direction and restricts buckling, so that the first,
The second stopper portions 21 and 22 are prevented from being deformed,
It is possible to reliably prevent the fitting 40 from further protruding from the base 4.

According to the present invention, the down tube 11 is fixed to the bush 5, the gas valve is opened without separately providing a beer valve, the gas is fed from the outer peripheral portion of the gas valve into the draft beer barrel body 1, and the draft beer is supplied. The draft beer barrel main body 1 can also be implemented as a type that is fed through the inside of the gas valve. Further, when the bush 5 is rotated without removing the residual pressure in the draft beer barrel main body 1 and the fitting 40 is to be removed, in the above-described embodiment, before the bush 5 is detached from the mouthpiece 4, the stopper 15 is removed. The stopper portion 21 of No. 1 is brought into contact with the inner end surface of the mouthpiece 4 (or the inner surface of the upper mirror 2) to prevent the fitting 40 from jumping out due to the residual pressure in the draft beer barrel body 1. When the male screw 7 of is removed from the female screw 6 of the mouthpiece 4 and the fitting 40 starts to jump out of the mouthpiece 4, the first stopper portion 21 of the stopper 15 contacts the inner end surface of the mouthpiece 4 (or the inner surface of the upper mirror 2). The fitting 40 may be brought into contact with each other to prevent the fitting 40 from jumping out due to the residual pressure in the draft beer barrel body 1. In addition, the stopper 15 may have a first stopper portion and a second stopper portion that project from a hanging portion that is continuous with the ring-shaped portion. Further, the second stopper portion 22 may be integrally provided in the central portion such as the hanging portion by welding or the like, and the groove portion 33a of the hole 33 may be formed deep from the central portion of the wide portion. In addition, the present invention can be variously changed in design without departing from the basic technical idea.

[0032]

As described above, according to the present invention, the gas valve is retracted together with the stopper or the like against the elasticity of the spring to open the gas passage to release the residual pressure in the body of the draft beer and the stopper. By elastically deforming, the first and second stopper portions are retracted to the bush side to release the retaining state, and in this released state, the fittings such as the bush can be integrally rotated and removed from the mouthpiece of the draft beer barrel body. it can. In addition, even if the bushing is forced to rotate without releasing the residual pressure in the draft beer barrel without opening the gas valve and the fittings such as the bush are to be taken out from the draft beer barrel body, the first stopper portion of the stopper Is backed up in the compression direction of the metal by the second stopper portion while being in contact with the inner end surface of the mouthpiece or the inner surface of the upper mirror of the draft beer barrel main body, preventing deformation,
It is possible to restrict the fitting of the bush or the like from protruding from the base. If you do not open the gas valve in this way, you can not release the stopper from the stopper and so on, so you can surely release the residual pressure in the draft beer barrel body when removing it, and also do not damage the stopper. Can be prevented. Therefore, it can be always removed safely, and safety can be improved, and economic efficiency can be improved by extending the life. 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.

The open portion of the bush corresponds to the wide portion corresponding to the first stopper portion of the stopper and the second stopper portion of the stopper, and the narrow groove portion formed deeper than the wide portion. And at least at the open position of the gas flow path by the gas valve at the time of residual pressure extraction in the draft beer barrel main body, the first stopper portion is substantially at the lower edge adjacent to the upper opening mouth portion of the groove portion. By being pressed,
By configuring the stopper so as to elastically deform so that the first and second stoppers retract toward the bush side, the first stopper portion is easily elastically deformed, so that the operation becomes easy and the stopper The spring property is not easily deteriorated, and the durability can be improved.

Further, the stopper is continuously provided so that the hanging portion and the rising portion are spaced from each other via the folded-back portion, and the first stopper portion is connected to the upper end portion of the rising portion by the bent portion to reach the tip side, The second stopper portion is continuously arranged so as to be gradually inclined toward the mouthpiece side, and the second stopper portion is continuously arranged at a right angle below the first stopper portion above the rising portion. As a result, even if the stopper is repeatedly deformed and restored, it can be displaced at two places, the folded-back portion, the rising portion, and the bent portion of the first stopper portion, and the displaced portions can be dispersed, thus preventing deterioration of the spring property. It is possible to improve the economical efficiency by extending the life and to eliminate the need for strict machining and assembling accuracy, and to reduce the cost.

Further, the protruding length of the second stopper portion is the first
By making it shorter than the protruding length of the stopper part, it is possible to reduce the amount of deformation of the stopper and move it backward so as to release the retaining state of the fitting. Therefore, even if the space in the bush is narrow. It is possible to retreat so as to reliably release the retaining state, and the lowering stroke of the stopper and the like can be shortened, so that the operability can be improved.

Further, by forming the stopper so that the inner end side thereof is housed inside the bush, when the draft beer is poured, the draft beer can be smoothly discharged from the bush into the draft beer barrel main body, thus preventing foaming. can do.

Further, since the stopper is formed 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 an 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.

[Explanation of symbols]

 1 Draft beer barrel body 2 Base 5 Bushing 11 Down tube 13 Gas valve 15 Stopper 17 Hanging part 18 Rising part 19 Folding part 20 Bending part 21 First stopper part 22 Second stopper part 30 Compression spring 32 Gas flow path 33 Hole (open) Part) 34 beer valve 36 compression spring 38 beer flow path 40 fitting 41 jig

Claims (6)

[Claims] 1. An opening formed in a bush that is detachably screwed into a mouthpiece of a draft beer barrel main body and a gas flow path of the bush are closed by a biasing force of a spring to resist the biasing force of the spring. A metal stopper provided so as to be movable together with an openable gas valve and having a first stopper portion and a second stopper portion capable of protruding from the open portion, wherein the stopper is at least in the draft beer barrel body. At the open position of the gas flow path by the gas valve at the time of extracting the residual pressure, at least one of the first and second stopper portions is pressed by the lower edge of the open portion, so that the first and the second portions are elastically deformed. The second 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, due to impact resilience, the first and the first The second stopper portion is projected outward from the open portion in a retaining state, and when the first and second stopper portions are detached from the mouthpiece by rotation of the bush in the retaining protrusion protruding state, the first stopper portion is removed. The first stopper portion is backed up in the metal compression direction by the second stopper portion by contacting the stopper portion of the second stopper portion with the inner end surface of the mouthpiece or the inner surface of the upper mirror of the draft beer barrel body. Fittings for draft beer barrels that are configured to pop out and regulate bushes and the like. 2. A narrow groove-shaped portion formed so that an open portion of the bush corresponds to a wide portion corresponding to the first stopper portion of the stopper and a second stopper portion of the stopper and is deeper than the wide portion. And at least at the open position of the gas flow path by the gas valve at the time of residual pressure extraction in the draft beer barrel main body, the first stopper portion is substantially at the lower edge adjacent to the upper opening mouth portion of the groove portion. The draft beer barrel fitting according to claim 1, wherein when pressed, the stopper is elastically deformed so as to retract the first and second stoppers to the bush side. 3. The stopper part is continuously provided such that the hanging part and the rising part are spaced from each other via a folding part, and
The stopper portion is continuously provided on the upper end portion of the rising portion so as to gradually approach the mouthpiece side by the bent portion so as to approach the base side, and the second stopper portion is provided on the upper portion of the rising portion. The fitting for a draft beer barrel according to claim 1 or 2, which is continuously provided in a direction perpendicular to a lower side of the stopper portion. 4. The fitting for a draft beer barrel according to claim 1, wherein the protruding length of the second stopper portion is shorter than the protruding length of the first stopper portion. 5. The fitting for a draft beer barrel according to claim 1, wherein an inner end side of the stopper is housed inside the bush. 6. The fitting for a draft beer barrel according to claim 1, wherein the stopper is formed of a leaf spring material.