JPH06281035A - Structure for fixing gas cock - Google Patents

Abstract

PURPOSE:To realize fixing work of a gas cock from above by using a specific fixing metal fitting having a leg portion in contact with a flange portion and a gas tube, against which a cock flange abuts in fixing the gas cock in the gas tube of gas equipment. CONSTITUTION:In fixing a gas cock 4 in a gas tube 1 of gas equipment, a fixing metal fitting 2 is set with a holding piece 222 disposed in a leg portion 22 contacted with the lower surface of the gas tube 1 and a flange portion 21 positioned above the gas tube 1. The gas cock 4 provided with an inlet cylindrical portion 40 having a length corresponding to an interval defined between the flange portion 21 and the gas tube 1 is disposed with the gas inlet outer peripheral region of the inlet cylindrical portion 40 contacted with the outer peripheral region of a gas hole 3 of the gas tube 1 via a rubber packing. In this state, the cock flange 41 of the gas cock 4 is screwed to the upper surface of the flange portion 21, and the lower end of the inlet cylindrical portion 40 is pressurized to the gas tube 1 via the rubber packing by the fastening force, thus completing fixing work of the gas cock 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a gas cock used in a gas appliance.

[0002]

2. Description of the Related Art As a mounting structure for a gas cock in a gas pipe of a gas appliance, a fitting in which a fitting is directly welded to the periphery of a gas hole formed in the upper portion of the gas pipe, and the gas cock is attached to the fitting is specially known. It is disclosed in Japanese Laid-Open Publication No. 51-20740. In this product, as shown in Fig. 1, when the fitting (2) is welded to the periphery of the gas hole (3) of the gas pipe (1) (zinclite pipe), the gas pipe (1) and the fitting (2) ), The welding strength becomes weak due to variations in processing accuracy, etc.
The weld airtightness may not be sufficiently obtained, and the self-weight of the gas pipe (1) and the repeated load in the operation of the gas cock may cause cracks in the welded portion and gas leakage.

Therefore, a method of fixing the gas cock to the gas pipe (1) without welding the fitting (2) to the periphery of the gas hole (3) is disclosed in Japanese Utility Model Laid-Open No. 61-79082. As shown in Fig. 2, this product has a cock flange (4) attached to the gas cock (4) through a rubber packing in the gas hole (3).
(1) and the fitting (2) to the lower part of the gas pipe (1), and tighten the screw to the screw hole of the cock flange (41) from the screw through hole of the fitting (2). Is to fix the gas cock (4) to the gas pipe (1). According to this, not only is there no weld in the gas passage, but the rubber packing interposed between the cock flange (41) and the gas pipe (1) is compressed by the screw tightening force. Since it can be hermetically sealed, it is possible to reliably prevent gas leakage.

However, in this case, the gas cock
When mounting (4), there is a problem that workability is poor.
This is used when installing the gas cock (4).
Since (4) is an obstacle and cannot be screwed from above, it will be screwed from the side of the mounting bracket (2) attached below the gas pipe (1). This is because the screwing work has to be performed from a narrow space below the gas pipe (1).

According to the present invention, the gas inlet of the gas cock (4) is abutted to the gas hole (3) formed in the upper portion of the gas pipe (1) through a rubber packing as described above. Fix the gas cock (4) to the gas pipe by screwing the fitting (2) that is locked or fixed to (1) and the cock flange (41) of the gas cock (4).
In the gas appliance fixed to (1), the workability is improved when the gas cock (4) is attached, and
The problem is to improve the airtightness of the mounting portion. * Regarding the invention of claim 1

[0006]

[Technical Means] The technical means of the present invention taken to solve the above-mentioned problems is as follows.
The inlet cylinder (40) with the gas inlet at the tip projects downward from the middle of the screw through hole provided in 1), and the mounting bracket
(2) is a leg plate from a flange plate (21) having an opening (23) for inserting the inlet tube (40) in the middle of the screw hole and attached to the lower surface of the cock flange (41). (22) is hung so that the leg portion (22) is provided with a holding piece (222) that is in contact with the lower surface of the gas pipe (1), and the flange plate (21) and the gas pipe (1) are provided.
The gap (G) between the two is adapted to the protruding height of the inlet tube portion (40), and the cock flange (41) is fixed to the flange portion (21) by screwing from above. ”

[0007]

The above technical means of the present invention operates as follows. Attach the holding piece (222) to the lower surface of the gas pipe (1), and mount it so that the flange (21) is located above the gas pipe (1).
When (2) is set, a predetermined gap (G) is generated between the flange portion (21) and the gas pipe (1). Since this gap (G) matches the protruding length of the inlet cylinder (40) of the gas cock (4), the opening (2) of the flange (21) of the mounting bracket (2) set above is
Insert the inlet tube portion (40) into 3), the gas inlet outer peripheral region of the inlet cylinder portion (40) is contacted with the gas hole (3) outer peripheral region of the gas pipe (1) via a rubber packing, In this state, if the cock flange (41) of the gas cock (4) is screwed onto the upper surface of the flange part (21) from above, the gas inlet outer peripheral area at the lower end of the inlet tube part (40) will be covered by the rubber packing due to the tightening force of the screw. Through gas pipe
Pressure is applied to the surface of (1). That is, the rubber packing is pinched between the outer peripheral area of the gas hole (3) and the outer peripheral area of the gas inlet.

[0008] Further, the pressure applied by the screwing makes the inlet tube portion
The gas pipe (1) is pinched from above and below between the (40) and the holding piece (222), and due to the frictional force due to this pinching, the gas cock (4) and the fitting (2) together with the gas pipe (1). ) Is fixed.

[0009]

[Effect] The present invention having the above-mentioned structure has the following unique effects. The work of attaching the gas cock (4) to the gas pipe (1) can be performed by screwing it from above the gas pipe (1) using the mounting bracket (2), which improves workability. At this time, the rubber packing interposed between the gas inlet outer peripheral area of the inlet tube portion (40) and the gas hole (3) outer peripheral area is pinched, so that the airtightness of the mounting portion is improved. Regarding the invention of claim 2, the invention of claim 2 solves the same problem as the invention of claim 1 described above, and the technical means therefor is, in the invention of claim 1, The piece (222) is welded to a predetermined position on the lower surface of the gas pipe (1) in a predetermined posture ”.

With this means, the mounting bracket is
Since (2) is fixed to the gas pipe (1) in a predetermined posture by welding in advance, it is not necessary to support the mounting bracket (2) when mounting the gas cock (4), so workability is improved. It will be further improved. In addition, the gas cock (4) will be screwed to the mounting bracket (2) that is welded and fixed to the gas pipe (1) in advance, so there will be no inconvenience that the mounting bracket (2) will shift after mounting. The strength will be further improved.

[0011]

Embodiments of the present invention will be described below with reference to FIGS. In this embodiment, as shown in FIG. 3, the present invention is applied to a gas stove, which uses a gas pipe (1) provided at a lower portion of a main body case (6) by a fitting (2) to attach a gas cock ( 4) is fixed. The gas cock (4) is provided with a cock flange on both sides in the longitudinal direction of the gas pipe (1) from the center of the lower surface of the cock body (43) accommodating the gas stopper (42).
(41) is projected, and the configuration is such that the square tubular inlet cylinder (40) is projected downward from the center of the cock flange (41), and the gas nozzle (7) is provided at the upper rear end of the cock body (43). Is attached to the mixing tube (8) behind the burner. And
The cock body (43) is set in an inclined posture in which the front operation shaft (9) side is slightly upward, and the operation shaft (9) is projected from the front panel (P) so that it is located at the front end of the operation shaft (9). The amount of gas is controlled by rotating the attached operation knob (9a).

The gas pipe (1) is composed of, for example, a zincite pipe (outer diameter 12.7 mm, thickness 1.2 mm), and a gas hole (3) is formed in the upper portion of the gas pipe (1). Further, as shown in FIG. 3 to FIG. 7, the mounting metal fitting (2) is arranged above the gas pipe (1) with a space (G) approximately the same as the protruding height of the inlet cylinder (40). A flat plate-like flange portion (21) to be installed, and an interval (H) from the opposite side of the flange portion (21) in the longitudinal direction of the gas pipe (1).
It consists of two legs (22) and (22) that hang down. Each leg (22) has a structure in which a vertical piece (221) and a holding piece (222) bent to the gas pipe (1) side so as to be in contact with the lower surface of the gas pipe (1) are connected in series. The holding piece (222) has a screw through hole.
A fixing plate (223) having a hole (224) is connected in series.

In addition, in the central portion of the flange portion (21), a rectangular open portion (23) slightly larger than the outer shape of the inlet tube portion (40).
Screw holes (24) and (24) for fixing the cock flange (41) are provided on both sides of the opening portion (23) and in the longitudinal direction of the gas pipe (1). Next, using the mounting bracket (2) above,
Details of mounting (4) will be described in detail.

When each holding piece (222) is brought into contact with the lower surface of the gas pipe (1) and the mounting metal fitting (2) is set so that the flange portion (21) is located above the gas pipe (1), A predetermined gap (G) is generated between the flange portion (21) and the gas pipe (1). At this time,
Distance between legs (22) and (22) diagonally located on flange (21)
After inserting the gas pipe (1) into (H) and turning the whole body 90 °, the state is set.

In this state, when the pair of holding pieces (222) (222) are projection-welded to the lower surface of the gas pipe (1), the fitting (2) is fixed to the gas pipe (1) in the posture described above. To be done. Then, in the opening (23) of the flange (21), the gas cock
Insert the inlet cylinder (40) of (4), and make the lower end of the gas inlet contact the outer circumference of the gas hole (3) of the gas pipe (1) through the rubber packing (5). 41) is fixed to the upper surface of the flange portion (21) by screwing it from above.

In this embodiment, since the leg portion (22) is provided with the fixing plate (223) as described above, this fixing plate (223)
When screwing the to the bottom plate (61) of the main case (6),
(1) and the gas cock (4) attached to it are fixed. Therefore, since the mounting metal fitting (2) absorbs the weight of the gas cock (4) and the load when the gas cock (4) is operated, these external forces do not act directly on the gas pipe (1).

Since there is no welded portion in the gas passage portion around the gas hole (3), there is no possibility of gas leakage due to defective welding and the safety is higher than that of the conventional one. In addition, the mounting bracket
Even if (2) is not welded to the gas pipe (1), when the gas cock (4) is screwed to the mounting bracket (2), it is held by the screwing force with the inlet tube (40). The piece (222) is a gas pipe
The (1) is clamped from above and below, and the clamping force fixes the gas cock (4) to the gas pipe (1). At this time, if an uneven engaging portion or the like is provided in the contact portion between the holding piece (222) of the mounting bracket (2) and the gas pipe (1), or if the lower surface of the gas pipe (1) is flat, The position shift of the gas cock (4) can be prevented in both the circumferential direction and the longitudinal direction of the gas pipe (1).

Further, when the fitting (2) is welded to the gas pipe (1), welding other than projection welding may be performed. As shown in FIG. 8, the mounting bracket (2) may be provided with the leg portion (22) only on one side of the flange portion (21). In this one, a flat-plate-shaped flange portion configured in the same manner as in the above embodiment
(21) A vertical piece (221) hanging from one side and a holding piece (222) bent inward from its lower edge are connected in series.
The overall shape is U-shaped or inverted U-shaped.

Also in this mounting bracket (2), the gas pipe (1) and the holding piece (22) are similar to those of the first embodiment.
After being set so as to be positioned between 2) and 4, the cock flange (41) can be screwed to the flange (21) from above to fix the gas cock (4) to the gas pipe (1). Incidentally, in any of the above embodiments, the flange portion (21) is formed of a flat plate without bending, so the screw holes (24) and (24) are formed in the flange portion (21). Screw holes (24) (24)
The processing accuracy of the arrangement intervals can be improved, and the arrangement intervals can be kept constant. .

Further, the holding piece (222) of the leg portion (22) is attached to the gas pipe (1).
If it is extended in the longitudinal direction, the electrode jigs on the gas pipe (1) side and the holding piece (222) side can be opposed to each other during projection welding, so that the gas pipe (1 ) Can be prevented from being deformed. Furthermore, FIGS.
As shown in FIG. 7, if a flat portion is provided around the gas hole (3) of the gas pipe (1), the mounting metal fitting (2) can be easily positioned in the circumferential direction of the gas pipe (1). In this case, rubber packing
(5) has a flat plate shape. In this embodiment, the flange portion (21) is composed of two plane portions arranged in parallel in the longitudinal direction of the gas pipe (1), and is held at the lower ends of the pair of leg portions (22) (22). The piece (222) is integrally formed. The fitting (2) is to be fitted and mounted from below the gas pipe (1). In this case, an open portion (23) is formed between the two flat surface portions forming the flange portion (21).

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is an explanatory diagram of a conventional example.

FIG. 3 is an explanatory diagram of the first embodiment.

[Fig. 4] Front view of main parts

5 is a bottom view of FIG.

FIG. 6 is a plan view of the mounting bracket (2) that is installed on the gas pipe (1).

FIG. 7 is a sectional view of an essential part.

FIG. 8 is an explanatory diagram of the second embodiment.

[Fig. 9] Explanatory drawing in which the mounting bracket (2) is attached to the gas pipe (1) provided with a flat portion.

FIG. 10 is a side view of FIG.

[Explanation of symbols]

 (1) ・ ・ ・ Gas pipe (2) ・ ・ ・ Mounting bracket (21) ・ ・ ・ Flange (22) ・ ・ ・ Leg (222) ・ ・ ・ Holding piece (23) ・ ・ ・ Opening part ( 3) ・ ・ ・ Gas hole (4) ・ ・ ・ Gas cock (40) ・ ・ ・ Inlet cylinder (41) ・ ・ ・ Cock flange (G) ・ ・ ・ Spacing

Claims (2)

[Claims] 1. A gas hole formed in the upper part of the gas pipe (1).
The gas inlet of the gas cock (4) is placed in contact with (3) through the rubber packing, and the fitting (2) for locking or fixing it to the gas pipe (1) and the cock flange (41) of the gas cock (4). In a gas appliance in which the gas cock (4) is fixed to the gas pipe (1) by screwing the gas cock (4), the gas cock (4) has a gas inlet at the tip from the middle of the screw through hole provided in the cock flange (41). The inlet tube portion (40) is projected downward, and the fitting (2) is provided with an opening portion (23) for inserting the inlet tube portion (40) in the middle of the screw hole and the cock flange ( From the flange plate (21) attached to the lower surface of (41), hang the legs (22),
On the leg (22), a holding piece (222) that contacts the lower surface of the gas pipe (1).
And the flange plate (21) and the gas pipe.
Fitting the gap (G) with (1) to the protruding height of the inlet cylinder (40) and fixing the cock flange (41) to the flange (21) by screwing it from above. Construction. 2. Gas holes formed in the upper part of the gas pipe (1)
The gas inlet of the gas cock (4) is placed in contact with (3) through the rubber packing, and the fitting (2) for locking or fixing it to the gas pipe (1) and the cock flange (41) of the gas cock (4). The gas appliance according to claim 1, wherein the holding piece (222) is welded to a predetermined position on the lower surface of the gas pipe (1) in a predetermined posture in a gas appliance in which the cock flange (41) is fixed by screwing. Mounting structure.