JP2754309B2 - Gas cock mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As a mounting structure of a gas cock in a gas pipe of a gas appliance, a fitting which is directly welded to a peripheral edge of a gas hole formed in an upper portion of a gas pipe and a gas cock is attached to the fitting is known. It is disclosed in JP-A-51-20740. In this apparatus, as shown in FIG. 1, when the fitting (2) is welded to the periphery of the gas hole (3) of the gas pipe (1) (zinc light pipe), the gas pipe (1) and the fitting (2) are welded. ), The welding strength may be weakened due to variations in processing accuracy, etc.
Welding airtightness cannot be obtained sufficiently and cracks may occur in the welded part due to the weight of the gas pipe (1) and the repeated load in the operation of the gas cock, and gas leakage may occur.

In order to solve this problem, Japanese Patent Laid-Open Publication No. Sho 61-79082 discloses a gas cock fixed to a gas pipe (1) without welding a fitting (2) to the periphery of a gas hole (3). As shown in FIG. 2, a cock flange (4) provided in a gas cock (4) through a rubber packing in a gas hole (3).
1) and the mounting bracket (2) against the lower part of the gas pipe (1), and tighten the screw from the screw through hole of the mounting bracket (2) to the screw hole of the cock flange (41). Thus, the gas cock (4) is fixed to the gas pipe (1). According to this, not only is there no weld in the gas passage, but also the rubber packing interposed between the cock flange (41) and the gas pipe (1) is compressed by the screw tightening force. Gas leakage can be reliably prevented.

However, in this case, the gas cock
(4) There is a problem in that the workability is poor when attaching.
This is when installing the gas cock (4).
Since the screw (4) is in the way and cannot be screwed from above, it must be screwed from the side of the mounting bracket (2) attached below the gas pipe (1). This is because the screwing operation has to be performed from a narrow space below the gas pipe (1).

According to the present invention, a rubber packing (5) is inserted into a gas hole (3) drilled in the upper part of a gas pipe (1).
The gas inlet of the gas cock (4) is brought into contact with the gas pipe (1), and a fitting (2) to be locked or fixed to the gas pipe (1) and a cock flange (41) of the gas cock (4) are screwed into the gas cock (4). In the gas appliance in which the gas pipe (1) is fixed to the gas pipe (1), it is an object of the present invention to improve the workability and the airtightness of the mounting part when the gas cock (4) is mounted. . * About the invention of claim 1
hand

[0006]

The technical means of the present invention taken to solve the above-mentioned problem is as follows: "The gas cock (4) has an inlet cylinder (40) having a gas inlet at the tip from the center of the cock flange (41). Are projected downward, and the mounting bracket (2)
Is provided with an opening (23) in the middle of the screw hole (24) through which the inlet cylinder (40) is inserted, and a leg from a flange plate (21) attached to the lower surface of the cock flange (41). (22) is suspended, and the gas pipe (1) is attached to the leg (22).
And a gap (G) between the flange plate (21) and the gas pipe (1) is adapted to the projecting height of the inlet cylinder (40). The cock flange (41) is screwed and fixed to the flange portion (21) from above. "

[0007]

The above technical means of the present invention operates as follows. The holding piece (222) is brought into contact with the lower surface of the gas pipe (1),
When the mounting bracket (2) is set so that the flange portion (21) is positioned above the gas pipe (1), the flange portion (2) is set.
A predetermined gap (G) occurs between 1) and the gas pipe (1). This interval (G) is equal to the inlet cylinder (4) of the gas cock (4).
0), the inlet tube (40) is inserted through the open portion (23) of the flange portion (21) of the set mounting bracket (2). ), The outer peripheral area of the gas inlet (3) is brought into contact with the outer peripheral area of the gas hole (3) of the gas pipe (1) via the rubber packing (5). In this state, the cock flange (41) of the gas cock (4) is connected to the flange portion ( 2
When the screw is screwed onto the upper surface of 1) from above, the outer peripheral area of the gas inlet at the lower end of the inlet tube portion (40) is pressed against the surface of the gas pipe (1) via the rubber packing (5) by the screw tightening force. . That is, the rubber packing (5) is used for the gas holes (3).
And the outer peripheral area of the gas inlet.

[0008] Further, the inlet cylinder portion is formed by the pressing force of the screw.
The gas pipe (1) is pinched from above and below between the holding pipe (40) and the holding piece (222), and the friction force generated by this pinching causes the gas cock (4) together with the fitting (2) to mount the gas pipe (1). ).

[0009]

According to the present invention having the above-described configuration, the present invention has the following specific effects. The work of attaching the gas cock (4) to the gas pipe (1) can be performed by screwing from above the gas pipe (1) using the attachment fitting (2), so that workability is improved. At this time, since the rubber packing (5) interposed between the gas inlet outer peripheral area of the inlet cylinder (40) and the outer peripheral area of the gas hole (3) is pressed, the airtightness of the mounting portion is improved. Become. * 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 for this is as follows: The piece (222) is welded to a predetermined position on the lower surface of the gas pipe (1) in a predetermined posture. "

In the apparatus employing this means, a mounting bracket is used.
(2) is fixed to the gas pipe (1) in a predetermined position by welding in advance.When mounting the gas cock (4), there is no need to support the mounting bracket (2) at all. It will be further improved. Also, since the gas cock (4) is screwed to the mounting bracket (2) which is welded and fixed to the gas pipe (1) in advance, there is no inconvenience that the mounting bracket (2) is displaced after mounting. The strength is further improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment 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 is mounted on a gas pipe (1) provided at a lower portion of a main body case (6) by a mounting bracket (2). 4) is to fix. The gas cock (4) is provided with a cock flange from the center of the lower surface of the cock body (43) accommodating the gas stopper (42) to both longitudinal sides of the gas pipe (1).
(41) is projected, and a square tubular inlet tubular portion (40) is projected downward from the center of the cock flange (41), and a gas nozzle (7) is provided at the upper rear end of the cock body (43). And facing the mixing tube (8) of the burner behind it. And
The cock main 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), and 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 zinc light pipe (outer diameter 12.7 mm, thickness 1.2 mm), and a gas hole (3) is formed in the upper part of the gas pipe (1). Further, as shown in FIGS. 3 to 7, the mounting bracket (2) is disposed above the gas pipe (1) with a space (G) substantially equal to the height of the projection of the inlet tube (40). A flat plate-shaped flange portion (21) to be provided, and an interval (H) in a longitudinal direction of the gas pipe (1) from an opposite side of the flange portion (21).
And two legs (22) and (22) which are suspended. Each leg (22) has a structure in which a vertical piece (221) and a holding piece (222) bent toward the gas pipe (1) side so as to be in contact with the lower surface of the gas pipe (1) are provided in series. The holding piece (222) has a screw through hole
A fixing plate (223) in which (224) is perforated is continuously provided.

In the center of the flange (21), a rectangular opening (23) slightly larger than the outer shape of the inlet tube (40) is provided.
Screw holes (24) (24) for fixing the cock flange (41) are provided on both sides of the open portion (23) and in the longitudinal direction of the gas pipe (1). Next, use the mounting bracket (2) to
The actual mounting of (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 bracket (2) is set so that the flange portion (21) is located above the gas pipe (1), A predetermined gap (G) occurs between the flange (21) and the gas pipe (1). At this time,
Distance between legs (22) and (22) located on the opposite corner of flange (21)
When the gas pipe (1) is inserted into (H) and the whole is turned 90 °, the above 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 mounting bracket (2) is fixed to the gas pipe (1) in the above-mentioned posture. Is done. Then, a gas cock is inserted into the opening (23) of the flange (21).
Insert the inlet cylinder (40) of (4), and make the outer peripheral area of the gas inlet at the lower end contact the outer peripheral area of the gas hole (3) of the gas pipe (1) via 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 (22) is provided with the fixing plate (223) as described above, the fixing plate (223) is provided.
Screw on the bottom plate (61) of the main body case (6).
(1) and the gas cock (4) attached thereto are fixed. Therefore, since the mounting bracket (2) absorbs the weight of the gas cock (4) and the load during operation of the gas cock (4), these external forces do not directly act on the gas pipe (1).

Since there is no weld in the gas passage around the gas hole (3), there is no possibility of gas leakage due to poor welding, and the safety is higher than the conventional one. In addition, 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), the gas cock (4) is held with the inlet cylinder (40) by the pressure applied by the screw. Piece (222) and gas pipe
The gas cock (4) is fixed to the gas pipe (1) by squeezing (1) from above and below. At this time, if a concave / convex engaging portion or the like is provided at the contact portion between the holding piece (222) of the mounting bracket (2) and the gas pipe (1), or the lower surface of the gas pipe (1) is flat, The displacement of the gas cock (4) can be prevented in both the circumferential direction and the longitudinal direction of the gas pipe (1).

Further, when welding the fitting (2) 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 (22) only on one side of the flange (21). In this embodiment, a flat flange portion configured in the same manner as in the above embodiment is used.
(21) A vertical piece (221) hanging from one side and a holding piece (222) bent inward from the lower edge of the vertical piece (221),
The overall shape is U-shaped or inverted U-shaped.

In this mounting bracket (2), the gas pipe (1) has a flange (21) and a holding piece (22) in the same manner as in the first embodiment.
2), the cock flange (41) can be screwed to the flange (21) from above to fix the gas cock (4) to the gas pipe (1). In each of the above embodiments, since the flange portion (21) is formed of a flat plate without bending, thread 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 there is no deviation in the arrangement intervals. .

The holding piece (222) of the leg (22) is connected to the gas pipe (1).
In the case of projection welding, the electrode jig on the gas pipe (1) side and the electrode jig on the holding piece (222) side can be opposed to each other. ) Can be prevented from being deformed. 9 and FIG.
As shown in (1), if a flat portion is provided on the periphery of the gas hole (3) of the gas pipe (1), the positioning of the mounting bracket (2) in the circumferential direction of the gas pipe (1) becomes easy. In this case, rubber packing
(5) is a flat plate. In this embodiment, the flange portion (21) is composed of two flat portions parallel to each other in the longitudinal direction of the gas pipe (1), and is provided at the lower ends of a pair of legs (22) and (22). The piece (222) is integrally formed. In this mounting bracket (2), it is fitted by fitting outside from below the gas pipe (1). In this case, an open portion (23) is formed between the two flat portions forming the flange portion (21).

[Brief description of the drawings]

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

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

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

FIG. 4 is a front view of a main part.

FIG. 5 is a bottom view of FIG. 4;

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

FIG. 7 is a sectional view of a main part.

FIG. 8 is an explanatory view of a second embodiment.

FIG. 9 is an explanatory view in which a fitting (2) is attached to a gas pipe (1) having a flat portion.

FIG. 10 is a side view of FIG. 9;

[Explanation of symbols]

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

Claims (2)

(57) [Claims] 1. A gas inlet of a gas cock (4) is brought into contact with a gas hole (3) formed in an upper portion of a gas pipe (1) through a rubber packing (5), and is connected to the gas pipe (1). In a gas appliance in which a fitting (2) to be locked or fixed and a cock flange (41) of a gas cock (4) are screwed to fix the gas cock (4) to a gas pipe (1),
The gas cock (4) has a configuration in which an inlet cylinder (40) provided with a gas inlet at the tip from the center of the cock flange (41) protrudes downward, and the mounting bracket (2) is provided in the middle of the screw hole (24). An opening (2) through which the inlet cylinder (40) is inserted
3) and a leg (22) is hung down from a flange plate (21) attached to the lower surface of the cock flange (41), and the leg (22) is attached to the lower surface of the gas pipe (1). And a gap (G) between the flange plate (21) and the gas pipe (1) is defined by an inlet cylinder (4).
A gas cock mounting structure adapted to the projection height of 0) and fixed by screwing the cock flange (41) to the flange portion (21) from above. 2. The gas cock mounting structure 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.