JPH0547335Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application and overview of the invention] The present invention relates to a gas tank, particularly a gas tank that is installed outdoors, or a meter tank that is installed near the downstream of a gas meter. be.

[Prior art and its problems] A gas meter is provided at the base of the gas supply pipe to each home, and a so-called meter cock is inserted near the downstream side of the gas meter. For safety reasons, this gas tank is closed before moving in or when the house is absent for a long period of time, and gas is not allowed to enter the room.

When moving in, the gas tank is opened and the piping route checked for gas leaks to ensure safety. As a result of this inspection, if there is any abnormality in the piping, the gas tank is closed, and the downstream gas circuit is repaired, inspected, etc. in this closed state. The same applies to repairs to gas circuits during occupancy.

However, if the meter tank is opened before the repair is completed or when the gas circuit of the gas appliance is left open, raw gas will be released indoors, which is extremely dangerous.

In order to avoid the above-mentioned dangers, in case of gas intermediate or original gas locks, the lock is released by pushing the operation knob, and the lock can be opened in this pressed state, so that careless operation of opening the lock due to mischief etc. is prevented.

On the other hand, similar to the push-and-turn type gas kettle mentioned above, when opening the kettle, there is a button to release the lock.
Japanese Utility Model Publication No. 47-2820 discloses a device in which the operating handle is swung in the axial direction at a constant angle, and in this state, the handle is rotated for operation. This device requires a special operation handle and requires an operation to release the lock, which is separate from the operation to open and close the lock, so it has an improved tamper-proofing effect.

However, in any of the above cases, as a mechanism to prevent misoperation due to tampering, etc., there is only one operation in a different direction from this operating direction before the lock opening operation, which is insufficient as a mechanism to prevent tampering or erroneous operation. .

The present invention has been devised in view of this point, and an object of the present invention is to more reliably prevent erroneous operations caused by mischief, etc., than the conventional ones.

(Regarding the first claim) [Technical means] The technical means of the present invention taken to achieve the above object are "a rotating plate 2 that is fitted onto the operating shaft 10 and rotates integrally therewith. and a fixed plate 3 fixed to the main body 1 are arranged vertically in parallel, and the engaging part of the fixed plate 3 and the engaged part of the rotary plate 2 are positioned within the same rotation locus, so that their mutual engagement The operating shaft 10 is restricted to be able to rotate within a predetermined range, and at least one of both ends of the rotating range is set to a closed position, and furthermore, an operating knob is removably provided at the tip of the operating shaft 10. 5 and the fixed plate 3, an annular plate 6 is interposed between the operating shaft 10 and the locking piece 60, which is removably fitted onto the operating shaft 10 and bent downward, and the rotating plate is in the valve closing position. An insertion opening A through which the locking piece 60 provided on the annular plate 6 is inserted is provided in the fixed plate portion that coincides with the edge in the opening rotation direction of the engaged portion of No. 2, and the annular plate 6 is operated. A locking piece accommodating portion 50 in which the locking piece 60 is housed when the locking piece 60 is fitted onto the shaft 10 in an inverted state is provided on the back surface of the operation knob 5.

[Effect] The above technical means works as follows.

When the gas tank is in the fully closed state, one of the engaged parts of the rotating plate 2 is in contact with the engaging part of the fixed plate 3. A locking piece 60 of the annular plate 6 inserted into the insertion hole A of the fixed plate 3 is located at the other end in the opening rotation direction.

That is, in the above state, the rotating plate 2 engages with the locking piece 60 in the opening rotation direction, and the rotating plate 2 is in the rotation inhibited state.

Since the rotating plate 2 is provided to rotate together with the operating shaft 10, rotation of the operating shaft 10 is prevented. That is, the operating shaft 10 is in a locked state.

When opening this gas valve, immediately remove the operating knob 5 and insert the annular plate 6 into the operating shaft 10.
Remove it, turn it over, and fit it onto the operating shaft 10 again. Next, when the operation knob 5 is reattached, the locking piece 60 is stored in the locking piece storage portion 50 formed in a predetermined position, and in this state, the locking piece 60 and the rotating plate 2 are becomes a disengaged state.

That is, the operating shaft 10 is unlocked, and the operating knob 5 can be rotated within a preset range.

As described above, when the operating shaft 10 is in the locked state, the annular plate 6 is covered by the operating knob 5, so that no member for unlocking appears outside.

Further, even in the unlocked state, the annular plate 6 is housed and held within the operating knob 5.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

When the operating shaft 10 is in the locked state, the annular plate 6 is covered by the operating knob 5, and no member for unlocking is exposed to the outside, so that difficult unlocking by an outsider can be prevented. That is, unlocking and subsequent valve opening operations caused by mischief can be reliably prevented.

Further, even in the unlocked state, the annular plate 6 is housed and held within the operating knob 5, so there is no chance of the annular plate 6 being lost after the lock is released.

[Example] Hereinafter, an example of the invention of the first claim will be described based on FIGS. 1 and 2.

In the gas tank of this embodiment, as shown in FIG. 1, a fixing plate 3 through which the operating shaft 10 is rotatably inserted is fixed to the upper end of the main body 1, and a lowering force of the closing member 12 is applied to the lower surface of the fixing plate 3. The rotating plate 2 urged in the upward direction by the spring 4 is brought into contact with the operating shaft 10, and the rotating plate 2 is fitted onto the operating shaft 10 in a paired state. Further, an annular plate body 6 is superimposed on the upper surface of the fixed plate 3.

In order to fix the fixing plate 3, as shown in FIG.
2 are located on opposite sides of each other,
These grooves 13, 13 formed in the upper part of the main body 1
The C-shaped pin 19 is used to prevent the screw from coming off. Further, a hanging tongue piece 33 corresponding to the engaging portion described in the technical means section above is provided at a position offset from the protruding pieces 32 by 90 degrees in the circumferential direction, and the opposite side of this hanging tongue piece 33 is provided. 3 through holes on the side
1 is drilled.

In this embodiment, the rotation range of the operating shaft 10 is set to 180 degrees by the engagement between both ends of the protruding piece 20 formed on the rotating plate 2 and that of the hanging tongue piece 33. The closing member 12 is set to be fully closed at both end positions of the rotation range, and fully opened at the center position. A through hole 31 is formed in the fixed plate 3 at a position where the edge of the protruding piece 20 of the rotary plate 2 in the opening rotation direction coincides with one end of the rotation range. The locking piece 60 of the annular plate 6 is inserted into the through hole 31, as shown by the broken line in FIG. It is in a relationship opposite to the piece 20.

Further, as shown in FIG. 2, the protruding piece 20 of the rotating plate 2
A protrusion 21 that protrudes toward the fixed plate 3 is formed at a position offset by about 90 degrees from the edge of the through hole 31 at the middle of the rotation operation range, that is, at the valve opening position of the closure 12. It is placed in a position that corresponds to Since this rotating plate 2 is biased toward the fixed plate 3 by the spring 4, when the closing member 12 is not in the fully open position,
is in an inclined state depending on the amount of protrusion of the protrusion 21;
When the closure 12 is rotated to the fully open position,
The protrusion 21 instantly fits into the hole 31 and clicks into place.
A notification sound is generated. Therefore, with this device, the closing lever 12 can be adjusted without looking at the position of the operating knob.
It can be determined that the is located at the fully open position.

As shown in FIG. 1, the operating knob 5 is attached to the tip of the operating shaft 10 with a screw.
The head of this fixing screw is exposed on the top surface of the operating knob. Therefore, in this embodiment, the operating knob 5 can be removed from the operating shaft 10 by removing the fixing screw. still,
The operating knob 5 and the operating shaft 10 are fitted in a pairwise manner, and are in a relationship such that they rotate together.

As shown in FIG. 2, the annular plate 6 is provided with a locking piece 60 that bends toward the back side at its periphery, and as described above, this locking piece 60 is inserted into the through hole 31. It is fitted onto the operating shaft 10 in such a manner that it is interposed between the fixed plate 3 and the operating knob 5, and this state becomes a locked state. At this time, as described above, the locking piece 60 and the protruding piece 2 of the rotating plate 2
0, rotation of the operating shaft 10 is prevented.

The through hole 31 of the gas tank in this embodiment functions as the insertion port A described in the technical means section above.

As shown in FIG. 2, the operation knob 5 has an external shape that includes a knob portion in the center of a disk-shaped portion with a certain width raised along the diameter line, and the back surface of the knob portion is provided with an operation knob portion. In order to hold the shaft 10 in a mating state, the portion other than the shaft holding portion is opened downward and forms a hollow portion having a shape similar to the outer shape of the operating knob. A part of this cavity becomes the locking piece accommodating part 50.

Therefore, in the unlocked state, the annular plate 6
When it is inverted and externally fitted onto the operating shaft 10, the locking piece 60 is housed in the cavity, as shown by the two-dot chain line in FIG.

Further, in the above-mentioned structure, the rotating plate 2 is provided below the fixed plate 3 and pressed against each other by the biasing force of the spring 4, but the rotating plate 2 is provided above the fixed plate 3, It may be interposed between the plate body 6 and the plate body 6.

(Regarding the second claim) The invention in the second claim achieves the same purpose as the first claim, and its structure, operation, and effects will be explained below.

[Technical Means] The technical means of the present invention taken to achieve the above object are as follows: ``A rotary plate 2 that is fitted onto the operating shaft 10 and rotates integrally therewith, and a fixed plate 3 that is fixed to the main body 1. are arranged vertically in parallel, and the engaging part of the fixed plate 3 and the engaged part of the rotary plate 2 are positioned within the same rotation locus, and by their mutual engagement, the operating shaft 10 can be moved only within a predetermined range. The rotation is controlled so that at least one of both ends of the rotation range is in a closed position, and the operation knob 5 removably provided at the tip of the operation shaft 10 is provided between the fixed plate 3 and the operation knob 5. , an insertion opening A which is fitted onto the operating shaft 10 in a mating state and has a locking piece 60 projected in the axial direction from the annular plate body 6, through which the locking piece 60 is inserted when the operating shaft 10 is in the valve-closed position. is provided on the fixed plate 3, and on the other hand, a locking piece storage portion 50 in which the locking piece 60 is stored is provided on the back surface of the operating knob 5 with the annular plate body 6 inverted and externally fitted onto the operating shaft 10. ” That is.

[Effect] The above technical means works as follows.

In the fully closed state of this gas tank, the locking piece 60 provided on the annular plate 6 is inserted into the insertion hole A provided in the fixed plate, and the locking piece 60 is engaged with the fixed plate 3. Depending on the case, rotation of the annular plate 6 is prevented. On the other hand, since the operating shaft 10 is mated with the annular plate 6 and rotates together with the annular plate 6, the above engagement causes the operating shaft 1
The rotation of 0 is in a state of being blocked. In other words, this gas tank is in a locked state.

When opening this gas valve, use the operation knob 5.
When the annular plate 6 is removed, the annular plate 6 is reversed and reattached to the operating shaft 10, and the operating knob 5 is attached, the locking piece 60 is stored in the locking piece storage portion 50 of the operating knob 5. The locking piece 60
and the rotating plate 2 are in a non-engaging state.

Thus, according to the above technical means, as in the first claim, when the operating shaft 10 is in the locked state, the annular plate 6 is covered by the operating knob 5, so that the lock can be released. There are no external parts for this purpose.

Further, even in the unlocked state, the annular plate 6 is housed and held within the operating knob 5.

[Effect] Since the present invention has the above structure, it has the same effect as the first invention, but when compared with the invention of the first claim, the locking piece 60 of the annular plate body 6 and the fixing plate 3 Since the locking state is achieved only in relation to the locking piece 60, there are few restrictions on the position of the locking piece 60.

[Example] Hereinafter, an example of the invention of the second claim will be described as a third example.
This will be explained based on the diagram and FIG.

As shown in FIGS. 3 and 4, the gas tank of this embodiment has an annular plate 6 fitted onto the operating shaft 10 in a pairwise manner, and the annular plate 6 is equipped with The stopper 60 is inserted into the through hole 34 corresponding to the insertion hole A described in the technical means section above, which is bored in the fixing plate 3, and their engagement prevents the operating shaft 10 from rotating. be.

Similar to the embodiment of the first claim, this gas tank has a fixed plate 3 attached to the upper part of the main body 1, and a spring 4 and a rotating plate 2 between the fixed plate 3 and the closure 12.
However, as shown in FIG. 3, the fixing plate 3 is attached by screws. In this fixing plate 3, as shown in FIG. It is set to correspond to 34.

Further, in this gas tank, the rotation range of the operating shaft 10 is set to 90 degrees, and one end of the range is set to a closed position and the other end is set to an open position. Therefore, as in the embodiment of the invention of the first claim, the through hole 31 and the protrusion 21 are not provided because there is no need for a warning sound generating means for the valve open position.

In the above embodiment, the rotary plate 2 was provided below the fixed plate 3 and pressed against each other by the biasing force of the spring 4, but the rotary plate 2 was provided above the fixed plate 3. You can.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the gas kottok of the device of the first claim, Fig. 2 is an exploded view of the main parts of the gas kottok of the device of the first claim, and Fig. 3 is an explanatory diagram of the gas kottok of the device of the first claim. Fig. 4 is an exploded view of the main parts of the gas tank according to the second claim. ,3
... Fixed plate, 5 ... Operation knob, 6 ... Annular plate body, 10 ... Operation shaft, 50 ... Locking piece storage section, 6
0...Latching piece.

Claims (1)

[Claims for Utility Model Registration] A rotary plate 2 that is fitted onto the operating shaft 10 and rotates integrally with the operating shaft 10 and a fixed plate 3 fixed to the main body 1 are arranged vertically in parallel, and the fixed plate 3 is engaged. and the engaged portion of the rotating plate 2 are located within the same rotation locus, and by their mutual engagement, the operation shaft 10 is restricted to be able to rotate only within a predetermined range, and the rotation at both ends of the rotation range is restricted. At least one of the valves is in the closed position, and the valve is removably fitted onto the operating shaft 10 between the operating knob 5 removably provided at the tip of the operating shaft 10 and the fixed plate 3, and is bent downward. An annular plate body 6 equipped with a locking piece 60 is interposed,
An insertion hole A through which a locking piece 60 provided on the annular plate 6 is inserted is provided in a fixed plate portion that coincides with an edge in the opening rotation direction of the engaged portion of the rotary plate 2 in the valve closing position; On the other hand, a gas tank is provided with a locking piece accommodating portion 50 in which the locking piece 60 is stored on the back surface of the operating knob 5 when the annular plate 6 is fitted onto the operating shaft 10 in an inverted state. A rotating plate 2 that fits onto the operating shaft 10 and rotates integrally with the operating shaft 10 and a fixed plate 3 fixed to the main body 1 are arranged vertically in parallel, and the engaging portion of the fixed plate 3 and the cover of the rotating plate 2 are arranged vertically. The engaging portions are positioned within the same rotation locus, and their mutual engagement restricts the rotation of the operating shaft 10 only within a predetermined range, and sets at least one of both ends of the rotation range to a valve closing position. Further, a locking piece 60 is provided between the operating knob 5 removably provided at the tip of the operating shaft 10 and the fixed plate 3, which is externally fitted onto the operating shaft 10 in a mating state and is attached to the annular plate body 6. An insertion hole A is provided in the fixed plate 3, through which the locking piece 60 is inserted when the operating shaft 10 is in the valve-closed position, and the annular plate 6 is inverted and externally fitted onto the operating shaft 10. In this gas tank, a locking piece storage part 50 in which the locking piece 60 is stored is provided on the back surface of the operating knob 5.