JPS6139178Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, the moto-kotuku is screwed onto the end of the gas pipe that penetrates the wall surface, but if the wall thickness is sufficient, the moto-kotuku can be attached to the wall surface and the pipe end with sufficient strength. . However, if the wall thickness is small, this strength will be insufficient, and if the mounting point of the socket is made to protrude significantly from the wall surface, the connecting threads etc. will be exposed, resulting in an extremely unsightly appearance.

The present invention has been devised in view of these points, and aims to provide sufficient strength even when attached to a thin wall, and to avoid causing an unsightly appearance even if the amount of protrusion from the wall surface becomes large. is its purpose.

The technical means of the present invention taken to achieve the above object will be explained using the reference numerals used in the description of the embodiments. A connecting screw 3 having a square head is screwed in, and the threaded portion on the tip side is connected to the small diameter threaded portion 1 on the tip side.
1 and a large-diameter screw portion 10 following this, and the wall surface 4
The flat washer 9 disposed on the outside of the wall 4 is fitted onto the large-diameter threaded portion 10, and the female threaded portion 12 of the tightening ring 6 disposed on the inside of the wall surface 4 is made to correspond to the large-diameter threaded portion 10. The outer periphery of the part is polygonal, and the outer periphery thereof is an annular groove 14 of an appropriate width.In addition, the outer diameter of the tightening ring 6 is made to match the outer diameter of the split ring 5, and the split ring has a pair of disc-shaped parts. half body 15,1
6 and is screwed onto a small diameter threaded portion 11 protruding from the tightening ring 6.
By externally fitting and joining these disc-shaped halves to the part 9, the disc-shaped halves are fixedly attached to the part.

The above technical means of the present invention operates as follows.

The wall surface 4 has a flat washer 9 that fits onto the large diameter threaded portion 10.
A tightening ring 6 screwed onto the large diameter threaded portion 10
It is squeezed by. The connecting screw 3 for attaching the base screw is fixed to the wall surface via the tightening ring 6 and the flat washer 9. The original screw 1 is screwed onto the small diameter threaded portion 11 of the connecting screw 3, and the disk-shaped halves 15 and 16 of the split ring 5 are externally fitted between the connecting screw portion 19 of the original screw and the tightening ring 6. If you let
The threaded portion between the small diameter threaded portion 11 and the connecting threaded portion 19 is covered.

In addition, in the original installed state, the tightening ring 6 is set to the same size as the split ring 5, so the area in which the wall surface 4 is clamped by tightening the tightening ring 6 becomes significantly wider. .

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

The wall surface 4 has a large diameter tightening ring 6 and a flat washer 9.
Since the clamping force is applied by
is reliably held and its holding strength is also improved.

In addition, the connecting threaded part 19 of the main screw 1 and the connecting part of the small diameter threaded part 11 are covered over a wide range depending on the thickness of the outer peripheral part of the tightening ring 6 and the thickness of the split ring 5. Even if the protruding amount of the connecting screw 3 from the wall surface 4 is long, the unsightly appearance of the thread of the connecting screw 3 located on the upstream side of the original screw being exposed does not occur.

Since the tightening ring 6 is tightened with a tool corresponding to the polygonal portion on the outer periphery of the female threaded portion 12, there is no worry that tool marks will be left on the outermost periphery of the tightening ring 6 after tightening.

Next, the embodiments of the present invention described above will be described in detail with reference to the drawings.

Fig. 1 shows the installed state of the embodiment of the present invention.
In the figure, reference numeral 1 is a base screw fixed to the tip of a connecting screw 3 screwed onto the gas pipe terminal 2, and a known split ring 5 is attached to the base side of the connecting screw that penetrates the wall surface 4, and is tightened. A ring 6 and a gasket 7 correspond to each other, and a flat washer 9 corresponds to between the hexagonal heads 8 on the outdoor side.

The screwing and correspondence of these parts will be explained in more detail with reference to FIGS. 2 and 3. One side of the connecting screw 3 is screwed into the piping terminal 2 in an airtight manner, and the hexagonal head 8 is screwed onto the other side. The large diameter threaded portion 10 and the small diameter threaded portion 11 are continuous throughout. The flat washer 9 is fitted onto the large-diameter screw portion, and one side of the flat washer 9 comes into contact with the hexagonal head 8, and the other side comes into contact with the wall surface 4. The tightening ring 6 is provided with a female threaded portion 12 having a polygonal outer periphery at the center, and an annular groove 14 having an appropriate width is formed between this and a rising portion 13 formed on the outer periphery, and the female threaded portion is connected to a connecting thread. This corresponds to the large diameter threaded portion 10 of No. 3. Further, the outer diameters of the tightening ring 6 and the packing 7 are made to match the outer diameter of the split ring 5, which will be described later.

The split ring 5 has the configuration shown in FIG. 3, and consists of a pair of disk-shaped halves 15 and 16 having a half-shaped hexagonal hole (hereinafter referred to as a half-hexagonal hole) in the center. When the diameter surfaces are brought into contact, one engagement piece 17, 17 engages the other engagement hole 18, 18.
The hexagonal hole is fitted into a ring-shaped hole in the center and is integrated with the hexagonal hole in the center.

In order to attach the base screw 1 using the connection device of the above embodiment, as shown in FIG. The threaded portion is passed through the through hole 20 in the wall surface 4.
Next, the packing 7 is externally fitted onto the large diameter threaded portion 10 of the connecting screw 3 protruding toward the indoor side, and then the tightening ring 6 is externally fitted onto the large diameter threaded portion 10. As a result, the wall surface 4 is sandwiched between the flat washer 9 and the tightening ring 6 with the packing 7 interposed inside, but in the center of the tightening ring 6 there is a female threaded portion 12 having a hexagonal or other outer periphery. Since the protruding annular groove 14 is set to an appropriate width, the tightening ring 6 can be tightened with sufficient torque using any tightening tool.

In this state, the small diameter threaded portion 11 of the connecting screw 3 protrudes from the tightening ring 6, and the connecting portion 19 of the original screw 1 is externally fitted onto this small diameter threaded portion to attach it. Furthermore, when each of the split rings 5 is then externally fitted and secured to the connecting threaded portion, the base stock 1 is attached in the state shown in FIG. 1.

In this attached state, the amount of protrusion from the wall surface 4 is greater than in the past by an amount equivalent to the clamping ring 6, and even if there is a protruding frame piece 21 above the cock attachment part as shown in Fig. 1, this does not hinder the operation of the cock. Also, since the outer diameters of the split ring 5, clamping ring 6, and packing 7 are the same, the unsightly connection part of the main cock 1 is covered by these, and the three are integrated into one, resulting in a remarkable design effect.

In addition, since the wall surface 4 is held between a sufficiently large flat washer 9 and a fastening ring 6 with sufficient tightening force, even if the wall surface 4 is thin, the original attachment strength is increased. The holding strength is also sufficient.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the usage state of the embodiment of the present invention, Fig. 2 is an exploded view thereof, and Fig. 3 is an explanatory diagram of the split ring 5. 3...Connection screw, 4...Wall surface, 5...Split ring, 6...Tightening ring, 9...Flat washer, 10...Large diameter threaded part, 1
1...Small diameter threaded part, 12...Female threaded part, 14...
Annular groove.

Claims (1)

[Scope of utility model registration request] A connection screw 3 having a square head is screwed into a piping terminal 2 disposed outside the wall surface 4, and the threaded portion on the tip side forms a small diameter threaded portion 11 on the tip side and a large diameter threaded portion 10 following this. , a flat washer 9 disposed on the outside of the wall surface 4
is externally fitted onto the large-diameter threaded portion 10, and the female thread 12 of the tightening ring 6 disposed inside the wall surface 4 is made to correspond to the large-diameter threaded portion 10, and the outer periphery of the female threaded portion is polygonal. The outer periphery is an annular groove 14 having an appropriate width, and in addition, the outer diameter of the tightening ring 6 is made to match the outer diameter of the split ring 5, and the split ring is composed of a pair of disk-shaped halves 15 and 16, and These disc-shaped halves are externally connected to the connection part 19 of the base lock 1 which is screwed onto the small-diameter screw part 11 protruding from the tightening ring 6, so that they are fixed to the part. Kotuku mounting device.