JPH0948496A - Fitting for draft beer cask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety on removing a fitting out of a capsule, to lengthen the span of life for a stopper, and to reduce cost while improving efficiency in works for assemblage. SOLUTION: A stopper 13 made of a spring material is formed so that displacement is made at two positions; one at a turn-up point 16 where a rise part 15 is turned up toward a dangling part 14 and the other at a bending point 17 at the upper part of the rise part 15. The stopper 13 is provided so that it can move together with a gas valve 12 and the like. A stopper part 19 is projected through a hole 31 of a bush 5 when the gas valve 12 is positioned for closure of a gas passage, and thereby the state of preventing coming-off can be maintained. While residual pressure in a draft beer cask 1 is released with the gas valve 12, the stopper 13 and the like lowered with a jig, the stopper part 19 is housed by elastic deformation into the bush 5, and thereby the state of preventing coming-off is released. At the released state, the bush 5 and the like, being engaged, are turned by operation of the jig and removed out of a capsule 4 with screws 6 and 7 loosened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial draft beer barrel 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 5 is loosened with respect to the mouthpiece 4 and is tried to be removed from the mouthpiece without performing the opening operation of the gas valve, the stopper portion of the stopper is inside the mouthpiece. The end surface or the inner surface of the upper mirror of the draft beer barrel main body is engaged and 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. . In addition, since the gas valve or the like can be linearly inserted into the bush by utilizing the elastic deformation of the stopper at the time of assembling into the main body of the draft beer barrel, 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 displacement portion (fulcrum portion) is only one place 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.
Along with this, the displacement concentrates on the turnback portion, so the springiness deteriorates, and at the end the projection length due to the impact resilience of the stopper when the gas valve returns is insufficient, so that the residual pressure in the draft beer barrel body is not released When attempting to remove the barrel fitting from the mouthpiece, the stopper portion may not engage with the inner end surface of the mouthpiece, resulting in poor 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. Also, because the stopper is short enough to fit inside the bush,
At the time of assembly, there were problems that it was difficult to insert it into the bush, and assembly workability was poor.

The present invention solves the above-mentioned conventional problems, and by dispersing the stopper displacement, deterioration of the spring property is prevented, safety is improved, and economic efficiency is improved due to a longer life. Draft beer that can be improved, cost reduction can be achieved by not requiring strict processing and assembling accuracy, and workability to be incorporated into the draft beer barrel body can be improved. It is an object of the present invention to provide a barrel fitting, and, in addition to the above objects, a draft beer barrel fitting capable of improving the workability of assembling a stopper.

[0010]

Means for Solving the Problems The technical means of the present invention for achieving the above-mentioned object is for rotational operation formed on the outer end side of a bush which is detachably screwed into a mouthpiece of a draft beer barrel body. The engaging portion, the opening formed inside 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. And a stopper provided like
The stopper is continuously provided so that the hanging portion and the rising portion have a gap through the folded-back portion, and is gradually separated from the hanging portion as the upper portion of the rising portion reaches the stopper portion on the tip side by the bending portion. Is inclined to
At the open position of the gas flow path by the gas valve, the stopper portion is housed in the bush by elastic deformation, and at the closed position of the gas flow path by the gas valve,
The stopper portion is configured to project outward from the opening portion in a retaining state due to impact resilience.

Further, in the above technical means, the folded-back portion of the stopper is formed to have a curved portion projecting outward than the rising portion, and the folded-back portion and the rising portion are connected to each other through the bending portion. Is preferred.

Further, it is preferable that the folded-back side of the stopper is projected below 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.

[0014]

According to the present invention, the jig moves the gas valve together with the stopper against the elasticity of the spring to open the gas passage to release the residual pressure in the main body of the beer barrel, and the stopper portion of the stopper is elastic. By deforming it, it is housed in the bush and the retaining state is released, 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. 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. Further, the stopper can be displaced at two portions of the folded portion and the bent portion of the rising portion and the inclined portion and can disperse the displaced portions, so that deterioration of the spring property can be prevented, and strict processing and assembly are performed. Precision can be eliminated. Further, it can be incorporated into the draft beer barrel body by linearly inserting it.

Further, the stopper is formed long so that the folded-back side thereof protrudes below the bush.
It can be easily inserted into the bush.

[0016]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a draft beer barrel fitting according to an embodiment of the present invention, and FIG. 1 is a cross-sectional view of a fitting retaining state,
FIG. 2 is a sectional view for explaining a fitting removing operation,
FIG. 3 is an exploded perspective view.

As shown in FIGS. 1 to 3, 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. . 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 21 at the upper end thereof, the lower portion of a gas valve 12 having an outer peripheral portion formed of rubber is fixed by press fitting or the like inside the upper end portion, and a step portion 22 on the outer periphery of the intermediate portion has a collar-shaped portion 21.
Is abutted on the upper surface of.

The stopper 13 is made of a leaf spring material such as a metal, and the hanging portion 14 and the rising portion 15 are connected to each other through the folding portion 16 so as to be spaced apart from each other.
The inclined portion 18 is formed by the bent portion 17 on the upper part of the
The inclined portion 18 is set so as to be gradually separated from the hanging portion 14 as it reaches the stopper portion side 19 of the tip, and a ring-shaped portion 20 is continuously provided at the base end portion (upper end portion) of the hanging portion 14. . The folded-back portion 16 has a curved portion projecting outward from the rising portion 15, and is formed to have an inclined portion that gradually inclines toward the hanging portion 14 side following the curved portion toward the rising portion 15 side. When the folded-back portion 16 and the rising portion 15 are continuously provided via the bent portion, and the rising portion 15 is elastically deformed in the direction away from the hanging portion 14 and then released, it is easy to restore and deterioration of the spring property is caused. It is supposed to be prevented.

The stopper 13 has a ring-shaped portion 20 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 21. Protrusions 23 are formed at a plurality of locations inside the lower end of the bush 5, and the engaging portions 25 of the retailing disc 24 are engaged with the protrusions 23 on the outer periphery of the down tube 11. The retailing disc 24 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 26 formed in the lower portion of the bush 5 and a notch 27 formed in the retailing disc 24. A compression spring 28 is provided on the outer circumference of the down tube 11 between the ring-shaped portion 20 of the stopper 13 and the retailing disc 24.
The elasticity of the stopper 13, the down tube 11, and the gas valve 12 are integrally urged upward. As a result, the outer peripheral portion of the upper portion of the gas valve 12 made of rubber is brought into contact with the valve seat 29 provided inside the bush 5, the gas flow passage 30 is closed, and the inclined portion 18 and the stopper portion 19 of the stopper 13 are formed in the bush 5. It projects outward from a hole 31 as an open portion formed in the lower portion (inward) and is in a state (locked state) that prevents it from coming off from the base 4 (see FIG. 1). In this state, the distance between the stopper portion 19 and the lower end surface of the base 4 (or the inner surface of the upper mirror 2) is set to be narrower than the height of the male screw 6 of the base 4 and the male screw 7 of the bush 5, and During the rotation operation, the stopper portion 19 is engaged with the lower end surface of the mouthpiece 4 (or the inner surface of the upper mirror 2) before the screwed state of the female screw 6 and the male screw 7 is released. In the locked state, the stopper 1
On the side of the folded-back portion 16 of 3, the open portion 26 between the protruding portions 23 of the bush 5 and the notch 27 of the retailing disc 24
It is set so as to project downward from the bush 5.

Then, the gas valve 12 is pressed from above and the gas valve 12, the down tube 11 and the stopper 13 are lowered against the elasticity of the compression spring 28, whereby the gas valve 12 is separated from the valve seat 29, and the gas flow path is separated. Three
0 is opened and the beer barrel main body 1 is opened to the outside through the gas flow path 30, the inclined portion 18 of the stopper 13 is pushed by the lower edge of the hole 31 of the bush 5, and the inclined portion 18 and the inclined portion 18 are elastically deformed. The stopper portion 19 is adapted to be pressed into the bush 5 (see FIG. 2). At this time, in the stopper 13, first, the folded-back portion 16 is displaced, then the folded portion 17 is displaced, and the displaced portions are dispersed at two locations. Further, since the displacement portions of the stopper 13 are dispersed in this way, deterioration of the spring property is prevented, so that strict machining and assembling accuracy of the stopper 13 and the hole 31 can be eliminated.

Inside the upper portion of the down tube 11, a beer valve 32 made of stainless steel is provided so as to be movable in the axial direction. Beer valve 3 in down tube 11
2, a step portion 33 and a beer valve 32 formed on the lower inner circumference
A compression spring 34 is interposed between and, and the beer valve 32 is biased upward by the elasticity of the compression spring 34. As a result, the beer valve 32 is brought into contact with the valve seat 35 made of rubber in the gas valve 12, and the beer flow path 36 is closed (see FIG. 1). Then, the beer valve 32 is pressed from above and is lowered against the elasticity of the compression spring 34, so that the beer valve 32 moves toward the valve seat 35.
The beer flow path 36 is opened apart from, and the inside of the draft beer barrel main body 1 is opened to the outside via the beer flow path 36. Engaging portions 37 for rotating operation are formed at one or more locations inside the upper end (outer end) of the bush 5.

The jig 38 used for the opening operation of the gas valve 12 and the rotating operation of the bush 5 in the fitting having the above-mentioned construction has a pressing operation portion 39 for pressing the gas valve 12 and a bush 5 as shown by a chain line in FIG. Is integrally provided with a rotation operation unit 40 for rotating the. The pressing operation part 39 is formed to have a small diameter so as to press the gas gas valve 12 through the gas passage 30 of the bush 5, and the rotation operation part 40 is formed to have a large diameter so as to be inserted inside the upper portion of the bush 5. An engaging portion (not shown) capable of engaging with the engaging portion 37 of the bush 5 is formed on the rotation operating portion 40. A shaft 41 is integrally provided at the center of the upper surface of the rotation operation unit 40, and a handle 42 is integrally provided at the shaft 41.

The operation of the above configuration will be described below. First, the operation of pouring draft beer will be described. A dispenser (not shown) is attached to the base 4 to press the gas valve 12, and the gas valve 12, the down tube 11 and the stopper 13 are lowered against the elasticity of the compression spring 28. Along with pressing the beer valve 32,
The beer valve 32 is lowered against the elasticity of the compression spring 34. Along with this, the gas valve 12 is separated from the valve seat 29 of the bush 5 to open the gas passage 30 (see FIG. 2), and the beer valve 32 is connected to the valve seat 3 of the gas valve 12.
5, the beer flow path 36 is opened. Then, by feeding the gas into the draft beer barrel main body 1 from the gas flow passage 30, the draft beer in the draft beer barrel main body 1 can be poured to the outside from the beer flow passage 36 through the down tube 11.

In the above pouring, the inclined portion 1 of the stopper 13
8 is pressed by the lower edge of the hole 31 of the bush 5, and due to its elastic deformation, the inclined portion 18 and the stopper portion 19 are removed.
As shown in FIG. 5, the bush 5 is housed in the bush 5, and the retaining state (lock state) is released. However, after the draft beer is poured out, the dispenser is removed from the mouthpiece 4 and the pressed states of the gas valve 12 and the beer valve 32 are released to raise the gas valve 12, the down tube 11 and the stopper 13 by the restoring elasticity of the compression spring 28, The gas valve 12 can be brought into contact with the valve seat 29 to close the gas flow path 30, and the inclined portion 18 and the stopper portion 19 can be made to project from the hole 31 of the bush 5 in a retaining state by the restoring elasticity. The valve 32 can be raised by the restoring elasticity of the compression spring 34 and brought into contact with the valve seat 35 to close the beer flow path 36. In this way, after the draft beer is poured, the fitting can be restored to the retaining state. Further, similarly to the above, draft beer can be poured into the draft beer barrel body 1.

Even if the above-mentioned pouring operation is repeated, the stopper 13 still has the folded portion 16 and the folded portion 1 as described above.
Since the displacements are distributed to the two positions of No. 7, 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 fitting removing operation will be described. Before removing the fitting, as described above, the stopper portion 19 of the stopper 13 has the bush 5
It protrudes outward from the hole 31 (see FIG. 1).
reference). Therefore, in this state, the bush 5 etc.
However, even if the screws 6 and 7 are rotated in the loosening direction,
Since the stopper portion 19 engages with the lower end surface of the mouthpiece 4 (or the inner surface of the upper mirror 2) before the 7 is detached, and is held in a reliable retaining state, the fitting is performed by the residual pressure in the draft beer barrel body 1. There is no danger of being skipped.

When removing the fitting,
First, as shown in FIG. 2, the pressing operation part 39 of the jig 38 is inserted into the gas flow path 30 of the bush 5, and the rotation operation part 40 is inserted into the upper part of the bush 5 to engage the engaging part with the bush 5. Is engaged with the engaging portion 37 of. Then, the gas valve 12 is pressed by the pressing operation portion 39, and the gas valve 12, the down tube 11, the stopper 13, etc. are integrally lowered against the elasticity of the compression spring 28. Along with this, the gas valve 12 is separated from the valve seat 29 of the bush 5 and the gas passage 3
0 to open the residual pressure in the draft beer barrel body 1 to the gas flow path 3
It can be pulled out to the outside through 0, and the inclined portion 18 of the stopper 13 is pressed by the lower edge of the hole 31 of the bush 5, and the inclined portion 18 and the stopper portion 19 are elastically deformed as shown in FIG. It can be housed in the bush 5 in a pressure contact state to release the retaining state (lock state).

While maintaining the above-mentioned released state, the upper stepped portion 43 of the bush 5 is pressed by the lower surface of the rotary operation portion 40 of the jig 38 to release the bite between the female screw 6 and the male screw 7 and thereby the jig 38.
When the rotating operation of the bush 5 is performed,
Rotational force can be applied to the bush 5 via the engaging portion 37 of. At this time, the compression spring 28 is in a compressed state,
The friction resistance and the bush 5 of the inclined portion 18 of the stopper 13
The gas valve 12, the down tube 11, the stopper 13 and the like can be integrally rotated with the bush 5 by frictional resistance due to pressure contact with the lower edge of the hole 31, and the fittings can be removed from the base 4 by loosening the screws 6 and 7. At this time,
As described above, since the residual pressure in the draft beer barrel body 1 is released to the outside, the fitting can be safely removed from the base 4. Therefore, the draft beer barrel main body 1 and the fitting can be cleaned and repaired.

Although the hole 31 for projecting the stopper portion 19 of the stopper 13 is formed in a shape different from that of the hole 26 in the above embodiment, the hole 26 can also be used as a common shape. You can also do it. In addition, the down tube 11 is fixed to the bush 5, and the gas valve is opened from the outer peripheral portion of the gas valve into the draft beer barrel body 1 without separately providing a beer valve, and draft beer is fed from the draft beer barrel body 1 to the gas valve. It can also be implemented in a type in which it is fed through the inside of the. In addition to the above, the present invention can be modified in various ways without departing from the basic technical idea thereof.

[0030]

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 deformed to be housed in the bush to release the retaining state, and the jig is rotated in this released state to integrally rotate the bush and the like through the engaging portion, and the draft beer barrel It can be removed from the base of the body. 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. Further, the stopper can be displaced at two portions of the folded portion and the bent portion of the rising portion and the inclined portion to disperse the displaced portions, so that the deterioration of the spring property can be prevented and the economic efficiency can be improved by extending the life. In addition to being able to achieve this, it is possible to eliminate the need for strict machining and assembling accuracy, and to reduce costs. 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, the stopper is formed long so that the folded-back side thereof protrudes below the bush.
It can be easily inserted into the bush and therefore
The workability of assembling the stopper can be improved.

[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 retaining state.

FIG. 2 is a cross-sectional view showing the fitting and for explaining a detaching operation.

FIG. 3 is an exploded perspective view showing the fitting.

[Explanation of symbols]

 1 Draft beer barrel main body 2 Base 5 Bushing 11 Down tube 12 Gas valve 13 Stopper 14 Hanging part 15 Rising part 16 Folding part 17 Bending part 18 Sloping part 19 Stopper part 28 Compression spring 30 Gas flow path 31 Hole (opening part) 32 Beer valve 34 Compression spring 36 Beer flow path 37 Engagement portion 38 Jig

Claims (4)

[Claims] 1. An engaging portion for rotating operation, which is formed on the outer end side of a bush that is detachably screwed into a mouthpiece of a draft beer barrel main body, and an opening portion formed inside the bush.
The gas flow path of the bush is closed by the biasing force of the spring,
A stopper provided so as to be movable together with a gas valve that can be opened against the biasing force of a spring, wherein the stopper is continuously provided so that the hanging portion and the rising portion have a space through the folded portion, As the upper part of the rising part reaches the stopper part on the front end side by the bent part, it is gradually inclined so as to be separated from the hanging part, and the stopper part is elastically deformed so that the stopper part is formed at the open position of the gas flow path by the gas valve. A fitting for a draft beer barrel, which is housed in a bush and configured such that at a closed position of the gas flow path by the gas valve, the stopper portion is projected outward from the opening portion by a repulsive elasticity. 2. The folded-back portion of the stopper is formed so as to have a curved portion protruding outward than the rising portion,
The fitting for a draft beer barrel according to claim 1, wherein the folded-back portion and the rising portion are continuously provided through the folded portion. 3. The fitting for a draft beer barrel according to claim 1 or 2, wherein the stopper has a folded-back portion side projecting below the bush. 4. The fitting for a draft beer barrel according to claim 1, wherein the stopper is formed of a leaf spring material.