JPS6242219Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pipe fixing structure for fixing to a fixed body a pipe that guides a fluid such as city gas that passes through a hole drilled in a fixed body such as a drain plate or a wall. .

FIG. 1 shows a typical prior art example of the present invention.
When permanently attaching a city gas tank 2 to a drain plate 1 of a sink or stovetop installed in the kitchen of a reinforced housing complex, a nipple 5 is connected to the pipe 3 through a socket 4, and a lock nut is attached to the nipple 5. 6 are screwed together, the nipple 5 is inserted from below into the through hole 7 drilled in the draining plate 1, and the pipe 3 is connected to the pipe 9 with a tee 8 or an elbow, and a washer is attached to the upper part of the nipple 5. The screw 2 is screwed on through the screw 10. With such prior art, dimension adjustment is difficult and workability is poor. If the dimensions are incorrect, when the nipple 2 is removed from the nipple 5, the upper part of the nipple 5 will sink in the through hole 7 of the draining plate 1, making it difficult to attach the nipple 2 to the nipple 5 again. Sometimes. Furthermore, if the draining plate 1 is thick, the conventional nipples 5 cannot be used. If the inner diameter of the through hole 7 is large, the lock 2 will wobble when the drain plate 1 is sandwiched between the lock 2 and the lock nut 6 via the washer 10. Also, conventionally, for example, U.S. Patent No. 2857176
As shown in , a mounting hole with an internal thread is formed in the plate-shaped body, and an external thread formed at one end of the body is screwed into the internal thread to fix the body to the plate-shaped body. A tube is inserted into the main body, a cap nut is screwed onto the external thread formed at the other end of the main body, and the sleeve is tightened around the outer circumference of the tube by the cap nut, thereby tightening the tube. It is fixed to a plate.
In such prior art, internal threads must be carved into the plate-shaped body, and therefore workability is poor. This becomes a serious problem, especially when the installation work must be carried out in a narrow work space, such as on a gas stove in a kitchen. Further, since the cap nut is screwed onto the main body, the cap nut protrudes radially outward from the main body. Therefore, when there is only a narrow space around the outer periphery of the main body, it is difficult to thread the cap nut, and this also reduces work efficiency. Another drawback of this prior art is that the sleeve is continuous in the circumferential direction, and once the sleeve is fixed by tightening the cap nut and pressing the sleeve against the outer circumferential surface of the tube, it cannot be disassembled for maintenance etc. , cannot be restored and reuse of the sleeve is impossible. Therefore, a new sleeve must be prepared, and if the sleeve has been compressed and fixed to the tube, the problem arises in that the tube must also be replaced.

The present invention provides a pipe fixing structure that solves these conventional problems.The main purpose of the present invention is to provide a structure for fixing pipes that is easy to work with and also to securely fix the pipe to a solid body. It is possible to provide a fixed structure for the tube.

FIG. 2 is a longitudinal sectional view of an embodiment of the present invention. A through hole 7 through which a pipe 3 passes is bored in the draining plate 1. The socket 11 attached below the draining plate 1 has a cylindrical portion 12 thereof, an insertion hole 13 through which the pipe 3 is inserted, and a first conical surface 14 with an inner fit formed concentrically with the insertion hole 13. Internal thread 15 carved on the large diameter end 14a side of the first conical surface 14
A flange 16 extending radially outward is formed at the end of the cylindrical portion 12 on the draining plate 1 side. A metal plate 35 made of stainless steel or the like is provided on the top surface of the drain plate 1.
is fixed. That is, an insertion hole 13 is formed at one end of the socket 11. The first conical surface 14 fits inside the insertion hole 13 side. The internal thread 15 is continuous with the large diameter end of the first conical surface 14 and is carved at the other end of the socket 11 . A flange 16 extends radially outwardly at one end of socket 11.

FIG. 3 is a plan view of the socket 11. A plurality of (2 in the figure) mounting holes 17 are formed in the flange 16 . This mounting hole 17 has a wood screw 19.
penetrates. This wood screw 19 is screwed into the draining plate 1.

The plug 20 has an insertion hole 21 through which the tube 3 is inserted;
a second conical surface 22 with an inner fit formed concentrically with the insertion hole 21 facing the conical surface 14; and an internal thread 15.
It has an external thread 23 that is screwed into the external thread, and an engaging part 24 such as a spanner formed on the external surface. 1st and 2nd
A tightening ring 26 is interposed between the conical surfaces 14, 22. That is, the second conical surface 22 faces the first conical surface 14, is concentric with the insertion hole 21, is formed at one end of the plug 20, and fits inside the tube axis. The outer thread 23 is formed at one end of the plug 20 and is threaded into the inner thread 15 as described above. The engaging portion 24 is connected to the plug 20
is formed on the outer surface of the other end.

FIG. 4 is a plan view of the tightening ring 26;
FIG. 5 is a front view of the tightening ring 26. The clamping ring 26 is made of a material such as stainless steel, and surrounds the tube 3 in a perfect circle. Tapered conical surfaces 27 and 28 are formed on the outer periphery of both ends of the tightening ring 26, and these conical surfaces 27 and 28 abut against the conical surface 14 of the socket 11 and the conical surface 22 of the plug 20, respectively. The tightening ring 26 has a circumferential end 29 cut out and is open in the circumferential direction, so that the tightening ring 2
6 can be freely displaced in the radial direction, making it possible to reduce the diameter. The clamping ring 26 has a radially outward resilient force.

An external thread 31 is cut into the upper end of the tube 3. This external thread 31 is screwed into an internal thread 32 of a conventional cock 2 as a fluid transport member. End face 3 of Kotoku 2
6 and the metal plate 35 on the draining plate 1, there is a pipe 3
A packing 33 and a washer 34 are interposed therethrough. The washer 34 comes into contact with the upper surface of the draining plate 1 via the gasket 33.

When fixing the pipe 3 to the draining plate 1 and attaching the pot 2, first the pipe 3 is inserted into the socket 11, the tightening ring 26, and the plug 20 in this order from the draining plate 1 side. Next, the axis of the pipe 3 is aligned with the through hole 7, and the socket 11 is fixed to the draining plate 1 with wood screws 19. Therefore, the engaging portion 2 of the plug 20
4 with a wrench etc., and tighten the inner screw 15 and outer screw 2.
3, the screw is fed and the opposing conical surfaces 14 and 22 are brought closer to each other. Therefore, the tightening ring 26 is sandwiched between the conical surfaces 14 and 22 and its diameter is reduced, so that the inner surface of the tightening ring 26 firmly contacts the outer surface of the tube 3. The tube 3 is therefore fixed integrally with the clamping ring 26 and thus with the socket 11 and the plug 20 on the drain plate 1. Since the tightening ring 26 has a resilient force outward in the radial direction, when the diameter of the tightening ring 26 is reduced as described above against this resilient force, the tightening ring 26 maintains a perfect circle state. The tube 3 is tightened without being distorted while being maintained, so that the tightening ring 26 can tighten the outer surface of the tube 3 with uniform pressure over its circumferential direction.

After fixing the pipe 3 to the drain plate 1 as described above,
The pot 2 is screwed onto the upper part of the tube 3 via a packing 33 and a washer 34.

The fixing body to which the pipe 3 is to be fixed may be, in addition to the draining plate 1 as described above, a wall or the like. Instead of the wood screws 19, the mounting members may be nails, bolts, or the like.

According to the present invention, it is only necessary to drill the through hole 7 in the fixed body 1, and there is no need to process the through hole 7 with an internal thread as described in relation to the above-mentioned prior art. Sexuality is greatly improved. This is especially true for
For example, work is greatly facilitated when fixing the pipe 3 to a gas stove in the kitchen.

In addition, a plug 2 is attached to the inner thread 15 of the socket 11.
The outer diameter of the engaging part 24 is made smaller than the outer diameter of the cylindrical part 12 of the socket 11, which also improves workability in a narrow work space. is improved.

Since the tightening ring 26 is open in the circumferential direction and has a resilient force outward in the radial direction, it is possible to tighten the outer circumferential surface of the tube with a uniform force in the circumferential direction. Moreover, it can be reused multiple times. Since this clamping ring 26 is open in the circumferential direction, a common clamping ring 26 can be used for tubes 3 having different outer diameters.

The tightening ring 26 is capable of firmly tightening the outer periphery of the tube 3 between the first conical surface 14 and the second conical surface 22. Therefore, it becomes possible to securely fix the tube 3 to the fixed body 1.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the prior art, Fig. 2 is a sectional view of an embodiment of the present invention, Fig. 3 is a plan view of the socket 11, Fig. 4 is a plan view of the tightening ring 26, and Fig. 5 is a plan view of the tightening ring 26. 3 is a front view of ring 26. FIG. 1...Draining board, 2...Kottoku, 3...Pipe, 11
... Socket, 13 ... Insertion hole, 14 ... Conical surface, 15 ... Internal thread, 16 ... Flange, 17 ...
...Mounting hole, 19...Nail, 20...Plug, 21
...Insertion hole, 22...Conical surface, 23...External thread,
26...Tightening ring.

Claims (1)

[Claims for Utility Model Registration] In a pipe fixing structure for fixing to the fixed body 1 a pipe 3 that guides a fluid passing through a through hole 7 bored in the fixed body 1, the cylindrical portion 12 and the flange 16 are socket 1 with
1, the cylindrical portion 12 has an insertion hole 13 formed at one end of the cylindrical portion 12 and into which the tube 3 is inserted, and a first hole formed concentrically with the insertion hole 13 and fitted into the insertion hole 13 side. conical surface 14 and its first conical surface 14
The flange 16 extends radially outward at the one end of the cylindrical portion 12 and has a plurality of flanges spaced apart in the circumferential direction. Such a socket 11 has a mounting hole 17 formed in the same manner as shown in FIG.
4, a second conical surface 2 formed at one end concentrically with the insertion hole 21 and fitted inwardly of the tube axis;
2. The socket 11 has an outer thread 23 formed on the one end and screwed into the inner thread 15, and a hooking part 24 such as a spanner formed on the outer surface of the other end.
A plug 20 having an outer diameter smaller than the outer diameter of the cylindrical portion 12 surrounds the tube 3, and has both ends abutting the first and second conical surfaces 14, 22, respectively, and prevents radially outward elasticity. a clamping ring 26 that has a force and is open in the circumferential direction; a mounting member 19 such as a screw or nail that passes through the mounting hole 17 and fixedly attaches the flange 16 to one side of the fixed body 1; and The pipe 3 includes a washer 34 that contacts the other surface of the tube 3 and through which the pipe 3 is inserted, and an outer thread 31 is formed at the end of the pipe 3 protruding from the washer 34, and an inner thread 32 that is screwed into the outer thread 31. A pipe fixing structure characterized in that the end face 36 includes a fluid transport member 2 that presses a washer 34 against a fixed body 1 side.