JPS5819426Y2 - Exterior packing for combustion appliances, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a packing, and relates to an improvement of a sealing packing between an exterior plate of a combustion appliance, etc., and a tube material that protrudes from the exterior plate.

In conventional combustion appliances, it is customary to provide a hermetic structure, such as by inserting a seal gasket at the part where the gas pipe or water pipe protrudes from the exterior plate to prevent rainwater from entering. As shown in FIG. 1, in most cases conventionally a packing 12 is inserted into a pipe material 11 and the packing 12 is tightened between a plate 13 and an exterior plate 14 for sealing.

However, this method requires a separate part called the plate 13, and also requires the screws 15 to be attached and detached during attachment and detachment, which not only makes assembly difficult but also increases costs.

The present invention is intended to eliminate the drawbacks of the above-mentioned conventional example, and has a peripheral edge that comes into close contact with the exterior plate, a pipe insertion hole and a latching protrusion are provided at appropriate locations, and the latching protrusion is attached to the exterior plate. The gist is an exterior packing configured to be hooked and fixed to the periphery of an opening in a plate.

Hereinafter, a concrete explanation will be given based on an embodiment shown in FIG. 2. 1 is a pipe material such as a gas pipe or water pipe, 2 is an exterior plate, and 3 is a pipe material 1.
The opening 4 of the exterior plate 2 which can protrude outward is a gasket, which is provided with an insertion hole 5 at an appropriate position through which the tube 1 can be inserted, and has a peripheral edge 6 around the exterior plate 1 in close contact with the exterior plate 1.

Reference numeral 7 denotes a locking protrusion integrally formed on the gasket 4, and the gasket 4 is fixed by hooking the protrusion 7 onto the periphery of the opening 3 of the exterior plate 2.

The insertion hole 5 is made slightly smaller than the outer diameter of the tube 1, and the peripheral edge 6 is made sufficiently larger than the opening 3.

8 is a bent end portion of the tube material 1. In addition, FIG. 3 shows another embodiment of the latching protrusion 7, which is formed into a spherical shape.

In the above structure, when assembling, after inserting the insertion hole 5 of the packing 4 into the pipe material 1, press from the right side of the hooking protrusion 7 and hooking the protrusion 7 to the periphery of the opening 3 of the exterior plate 2. Preferably, the peripheral edge 6 of the packing 4 is appropriately brought into close contact with the exterior plate 2, and since the insertion hole 5 is slightly smaller than the outer diameter of the tube 1, the seal 4 and the tube 1 are sufficiently sealed. .

By the way, when the pipe material 1 has a curved part 8 at the tip as shown in the figure, the opening 3 of the exterior plate 2 needs to be large enough for the curved part 8 to pass through, so the packing 4 is However, according to the present invention, the packing 4 itself has no pressure against the exterior plate 2. Since the locking protrusion 7 that applies pressure is integrally formed, sealing performance can be ensured without requiring any separate parts.

Moreover, if the centers of the opening 3 of the tube material 1 and the exterior plate 2 do not match and are shifted, it would be extremely difficult to install the screw 15 in the conventional example, but in the present invention, the center of the screw 15 is The latching protrusion 7 can be moved to an appropriate position along the periphery of the opening 3, making attachment and detachment extremely easy.

Even in this case, the sealing performance is not impaired.

As described above, according to the present invention, it is extremely easy to attach and remove the gasket while maintaining its original sealing properties, which greatly improves the ease of assembly, and eliminates the need for separate parts to press the gasket, significantly reducing product costs. The effect is extremely dog-like, as it can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional packing part, FIG. 2 is a cross-sectional view of a packing part according to the present invention, and FIG. 3 is a cross-sectional view showing another embodiment of the locking protrusion. 1...Pipe material, 2...Exterior plate, 3...
... opening, 5 ... insertion hole, 6 ... peripheral portion, 7 ... latching protrusion.

Claims (1)

[Scope of utility model registration request] It has a peripheral edge that comes into close contact with the exterior plate, a pipe material insertion hole and a latching protrusion are provided at appropriate locations, and the latching protrusion is latched and fixed to the opening periphery of the exterior plate. Characteristic exterior packing for combustion appliances, etc.