JPS5916609Y2 - Gaskotsk - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas cock equipped with a closure that is rotated within the cylindrical portion of the gas cock body as the bundle rotates to open and close gas flow. The present invention relates to a gas cock that has an improved structure related to a bundle holding member that rotates to rotate a closing valve and a retaining member that prevents the bundle holding member from being pulled out upward and prevents rotation.

A conventional gas cock has a structure as described in, for example, Japanese Utility Model Publication No. 50-16253, in which a protruding shaft portion 101a of a bundle operating member 101 is connected to a bundle 100 as shown in FIG. A retaining member 102 that prevents the operating member 101 from being pulled out upward and prevents rotation in the gas outflow closed state is attached to the bundle holding member 1.
01, and the cylindrical body part 1 of the cock body
03 (The closure is rotatably housed inside.

) A pair of notches 103a are formed in the upper surface of the holder 102, and a pair of protrusions 102a formed on the retaining member 102 are fitted into the notches 103a.

Furthermore, a pair of locking protrusions 101b are formed at the lower end of the bundle holding member 101, and a step portion 102 is formed at the lower end of the retaining member 102 at a position facing each other with its axis interposed therebetween.
b is formed, and the engaging protrusion 101 is formed on this stepped portion 102b.
A raised portion 102C is formed at one end of this stepped portion 102b to prevent rotation of the engagement protrusion 101b, and a cutout groove 1 into which the engagement protrusion 101b is fitted and removed is formed at the other end.
02d is formed.

The connection between the bundle 100 and the bundle holding member 101 is such that the protruding shaft portion 101a is inserted into the insertion hole 100a so that rotation of the bundle 100 is transmitted to the bundle holding member 101, and the bundle holding member 101 is connected to the bundle holding member 101. 1
The upper end of a closure (not shown) fits into the hole 101C on the lower surface of the bundle holding member 101 so that rotation of the bundle holding member 101 is transmitted.

In the conventional example configured in this way, the bundle holding member 1
When the engagement protrusion 101b of 01 fits into the notch groove 102d, it becomes unrotatable, and the engagement protrusion 101b engages with the raised part 102.
When the bundle 100 comes into contact with C, rotation in one direction becomes impossible. However, in this unrotatable state, if further rotational force is applied to the bundle 100, in this conventional example, the bundle 100 stops at a predetermined position in both directions. is solely on the engagement protrusion 101b, so the engagement protrusion 101 of the bundle holding member 101
B is easily damaged, and if it is damaged, the bundle cannot be properly stopped in both the open and closed positions, which poses a safety risk.

In addition, in the conventional example described in this Japanese Utility Model Publication No. 16253/1983, a coil spring is interposed between the closure and the bundle operating member 101, and this coil spring presses the closure downward and removes the closure from the closure part. This prevents gas leakage.

However, in this conventional example, the coil spring is in an expanded state when the gas supply is cut off, and is in a contracted state when the gas is supplied, and the coil spring repeats expansion and contraction as the cock is opened and closed.

Therefore, the force for pushing down and positioning the closing member (that is, the elasticity of the coil spring) differs when the cock is open and closed, and the coil spring repeatedly expands and contracts as the cock opens and closes, so the elasticity does not gradually deteriorate. As a result, a gap is created at a location where the closure and the inner peripheral surface of the cylindrical body portion 103 are in close contact with each other, resulting in gas leakage.

In addition, the coil spring is connected to the closing member and the bundle operating member 10.
Since the upper and lower ends of the bundle 100 and the bundle operating member 101 are in direct contact with the coil spring 1, when the bundle 100 and the bundle operating member 101 are rotated, this rotational force is transmitted to the coil spring and a force that tries to twist the coil spring is applied, causing the bundle operation The retaining protrusions 101 b, 101 b of the member 101 are the retaining member 1
After the bundle 100 and the bundle operating member 101 are prevented from further rotation by colliding with the upright parts 102C and 102C of 02, when the hand holding the bundle 100 is released, the torsional force applied to the coil spring returns to its original state. A twisting force in the opposite direction that tends to return to the position acts on the bundle operating member 101 and the bundle 100, slightly returning the bundle 100 in the direction of closing the cock.

Although this kind of wobbling of the bundle 100 does not affect the gas supply, it makes the user feel uneasy because the bundle 100 does not point in the correct direction, and it lowers the value of the product. This is what will happen.

The present invention solves the above-mentioned drawbacks of the conventional technology, keeps the load transmitted to the closure constant, eliminates the risk of gas leakage due to repeated operations of the bundle, and also ensures stable and smooth rotation of the bundle itself. try to get
Furthermore, it is an object of the present invention to provide a gas cock which prevents a situation in which the bundle holding member cannot be prevented from rotating to a predetermined position due to bundle operation, and which is easy to assemble.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings from FIG. 2 onwards.

In FIG. 2, a closure 3 is housed in a cylindrical portion 2 of a cock body 1, and rotation of the closure 3 causes gas to flow from a gas supply path 4 to a gas outlet path 5.

Reference numerals 6 and 7 are a piping connection part and a hose attachment part, respectively.

A sheet packing 8 is interposed between the closure member 3 and the inner wall of the cylindrical body portion 2, and the surface of this sheet packing 80 is coated with silicone oil.

A ring-shaped spring bearing recess 9 is formed on the upper end surface of the closing member 3, and a protruding shaft portion 10 extending upwardly through the axis of the closing member 3 is formed. The diameter of the portion 10 becomes narrower in the middle to form a stepped portion 10a.

A partition member 11 using a washer or the like is fitted into the stepped portion 10a from the upper end of the protruding shaft portion 10 and is seated, and a coil spring 12 is interposed between the partition member 11 and the recess 9 of the spring receiver of the closure 3. has been done.

Furthermore, a plate spring 13, which is formed by bending a washer along its diameter, is fitted onto the partition member 11 from the upper end of the protruding shaft portion 10 and is seated thereon.

A bundle holding member 15 is fixed by screws 16 to a bundle 14 that covers the upper end of the cylindrical portion 2 of the cock body 1.

The lower end of the bundle holding member 15 is formed into a flange portion 15a as shown in FIG.
The upper surface of a is in contact with the bottom part 17a of the retaining member 17.

This retaining member 17 is prevented from being pulled out upward by a retaining ring 18 that fits into a ring groove 2a formed on the inner periphery of the cylindrical body portion 2.

The above-mentioned members will be explained with reference to the drawings from FIG.
7b, a pair of lug portions 17C, 17C formed on the outer periphery of the large cylindrical portion 17b, and a pair of projections 17d formed on the bottom surface of the large cylindrical portion 17b.

17d (see FIG. 4), and a large and small cylindrical portion 17a.

The bundle holding member 15 is inserted into the hollow portion of 17b.

This bundle holding member 15 includes a shaft portion 15b, a flange portion 15a formed at the lower end of this shaft portion 15b, a pair of notches 15C formed in this flange portion 15a,
15C, and this notch 15C515C fits into the projections 17d, 17d formed on the bottom surface of the retaining member 17, so that rotation of the bundle 14 and the bundle holding member 15 is prevented in the fitted state. It has become.

The closure 3 has a communication hole 3a bored for communication between the gas supply path 4 and the gas outlet path 5, and the aforementioned spring receiver has four parts 9, a protruding shaft part 10, and a stepped part 10a. ing.

A pair of notch grooves 2b, 2 are provided at the upper end of the cylindrical body portion 2.
Approximately two thirds of the lug portions 17c, 17c of the retaining member 17 are fitted into the notched grooves 2b, 2b to prevent rotation of the retaining member 17.

The upper ends of the ear pieces 17c, 17c are connected to a pair of rising pieces 14a formed on the inner bottom surface of the bundle 14 shown in FIG.
, 14a, and the ear pieces 17C, 17C are the raised pieces 14a.

By coming into contact with one end of the bundle 14a, the range of rotation of the bundle is restricted.

Note that reference numeral 14b in FIG. 5 is an insertion hole into which the upper end of the shaft portion 15b of the bundle holding member 15 is inserted.

Next, the opening/closing operation of the gas cock according to the embodiment of the present invention will be explained. In the state shown in FIG. 2, the gas flow is in the closed state, and the second spring member 13
4 is pressed upward, and the notch 15C cut out in the flange portion 15a of the bundle holding member 15 by this pressing.
, 15C are protrusions 17 formed on the bottom surface of the retaining member 17.
d and 17d.

In this state, the bundle 14 is prevented from rotating on the horizontal plane, and the closure 3 is maintained in the closed state.

To change the gas flow from the closed state to the open state, bundle 1
4 downward to retract the leaf spring 13 and release the engagement between the notch 15C515C of the bundle holding member 15 and the projections 17d, 17d of the retaining member 17.

At this time, the elasticity of the coil spring 12 does not undergo any change (unaffected by the pushing down of the bundle 14), and the bundle 14, which is pressing the closure 3 downward with a constant force, remains pressed downward. When turned in one direction, the engagement between the notches 15C, 15C and the projections 17d, 17d is released, so that the upper surface of the flange 15a is
The bundle holding member 15 rotates while sliding in the directions d and 17d, and at the same time the closure 3 also rotates so that the communication hole 3a allows gas to flow between the supply and outflow channels 4 and 5.

At this time, one end of the rising pieces 14a, 14a of the bundle 14 comes into contact with the ear pieces 17C, 17C of the retaining member 17, so that further rotation is prevented.

Furthermore, the flange portion 15 a of the bundle holding member 15
The notches 15C, 15C formed in the flange portion 15
The bundle holding member 15 may be formed at four equal parts of the circumference of C, that is, at each 90 degree position. In this case, the bundle holding member 15 is locked even in the gas open state, and when the bundle is in the closed state. Push the bundle 14 around in the same way as when changing from closed to open.

When the notches 15C and 15C are shaped in four places, the gas can be opened and closed reliably, the bundle 14 is pushed up on the opening and closing side, giving the user a sense of security, and the leaf spring 13 is contracted when opening. This has the advantage that deterioration of the second spring member 13 is also reduced.

As explained above, according to the present invention, a flange portion is formed at the lower end of the bundle holding member, and at least a pair of notches are formed in the flange portion, thereby preventing the bundle holding member from being pulled out upward. A pair of protrusions are formed on the bottom surface of the cylindrical retaining member with openings at both ends, which prevents the bundle holding member from rotating at a predetermined position, and a notch fits into the protrusions to prevent the bundle holding member from rotating. In addition, a pair of upright pieces are formed on the inner bottom surface of the bundle, one end of which abuts against the ear piece of the retaining member, so that the bundle cannot be turned too strongly or hands or feet may be attached to the bundle. Even if a strong rotating force is applied to the bundle holding member, there is no risk that the flange part itself of the bundle holding member will come off from the shaft part.
Moreover, since the rotation of the bundle is restricted within a predetermined range by the rising piece of the bundle and the ear piece of the retaining member, the rotation of the bundle holding member can always be reliably prevented at a predetermined position, and the bundle can be held as usual. The present invention can reliably prevent gas leaks due to damage to members and improper rotation of the bundle.

In addition, it is equipped with not only a locking mechanism consisting of the flange and notch of the bundle holding member and the projection of the retaining member, but also a locking mechanism consisting of a rising piece of the bundle and an ear piece of the retaining member, so that the bundle can be held in a predetermined position. It is highly reliable because it doubles to prevent rotation, and since such a locking mechanism is installed in a limited space within the cylindrical body, it is desirable that it be simple, do not break down, and operate reliably. However, in the present invention, the notch is simply processed and a protrusion is provided.
The above requirements can be satisfied by simply forming the upright piece and the ear piece.

Furthermore, since at least one pair of notches are formed on the flange, if two pairs are formed on the flange, the bundle cannot be rotated in any direction (on the horizontal plane) both when opened and closed. This eliminates the possibility of inadvertent rotation due to contact between hands and feet, giving the user a sense of security and preventing unexpected gas accidents.

In addition, the coil spring has good stability because the spring receiver formed on the upper end surface of the closure is inserted into the recess, and it reliably presses the closure downward to improve the degree of sealing of the closure.

Furthermore, fit the partition member → leaf spring → bundle holding member into the protruding shaft of the closure in this order, fit the retaining member into the bundle holding member and fix it within the cylindrical body, and finally attach the bundle. Therefore, assembly is easy.

Furthermore, when the bundle holding member and the retaining member are engaged with and disengaged from the notch and the protrusion formed in each, and the leaf spring presses the bundle holding member upward, the notch fits into the protrusion. This reliably prevents rotation of the bundle holding member and the bundle, and the bundle and the bundle holding member never rotate unless the bundle is pushed down.

In addition, when the bundle is pushed down and rotated to rotate the closure, the lower surface of the flange portion of the bundle holding member slides on the upper surface of the leaf spring, that is, frictional sliding in a surface contact state, Rotates smoothly and stably.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a part of a conventional gas cock, Fig. 2 is a sectional view of the embodiment of the present invention, Fig. 3 is an exploded perspective view, Fig. 4 is a bottom view of the retaining member, and Fig. 5 is a FIG. 3 is a bottom view of the bundle. 1... Cock body, 2... Cylindrical body part, 2
a... Notch groove, 3... Closer, 4...
...Gas supply path, 5...Gas outflow path, 9...
...The spring bearing is a recessed part, 10...Protruding shaft part, 1
1... Partition member, 12... Coil spring, 13... Leaf spring, 14... Bundle, 15... Bundle holding member, 15a・
...Flange part, 15b...Shaft part, 15 C.
...Notch part, 17... Removal prevention member, 17
C...Ear piece part, 17b...Protrusion part.

Claims (1)

[Claims for Utility Model Registration] Between the gas supply path 4 and the gas outlet path 5, there is a rotatable closure 3 housed in the cylindrical portion 2 of the cock body 1. In a gas cock that connects or closes a gas supply path 4 and a gas outlet path 5 depending on the rotational position, a spring receiver recessed in a ring shape on the upper end surface of the closure 3 is formed with four parts 9, and the closure 3 A protruding shaft part 10 is formed extending upward through the axis of the protruding shaft part 10, and a stepped part 10a is formed in the middle of this protruding shaft part 10, and a partition member 11 is fitted into and seated on this stepped part 10a. , and the partition member 11 is provided in the cylindrical body part 2 so as not to be able to move up and down, and the partition member 11 and the spring receiver are arranged between the recess 9 and the protruding shaft part 10 on the lower side of the closure 3. A plate spring 13 is fitted onto the partition member 11 from the upper end of the protruding shaft portion 10 and is seated, and the flange portion 15a of the bundle holding member 15 is placed on the plate spring 13. is seated, and the protruding shaft portion 10 is located within the main body of the bundle holding member 15.
is inserted, and a shaft portion 15b is formed at the upper end,
and a pair of notches 15C in the flange portion 15a,
5C is formed, and a retaining member 17 is fixedly provided within the cylindrical body portion 2 to prevent the bundle holding member 15 from being pulled out upward, and this retaining member 17 has two concentric large cylindrical portions 17b.
A pair of lug portions 17C, 17C1 formed on the upper surface of the small cylindrical portion 17a and the large cylindrical portion 17b are formed on the upper inner surface of the large cylindrical portion 17b to which the notches 15C, 15C of the bundle holding member 15 engage and disengage. A pair of protrusions 17d, 17d
The bundle holding member 15 is inserted into these large and small cylindrical parts 17b and 17a, and the flange part 15a is connected to the large cylindrical part 1.
The bundle 14 is brought into contact with the upper inner surface of the tube 7b, and the bundle 14 covers the cylindrical body part 2.
A pair of notch grooves 2b are formed in the cylindrical body part 2, and the shaft part 15b is fixed at the center of the cylindrical body part 2. A gas cock characterized in that the ear pieces 17C, 17C of the retaining member 17 are fitted into the retaining member 2b.