JPH0135107Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a thin-walled pipe joint for water supply.

Conventional technology and its problems Figures 1 and 2 show examples of conventional thin-walled water pipe joints. The ring C is loosely fitted, the thin-walled tube A is inserted into the main body D to an appropriate position, and the nut and the main body D are tightened with a wrench to compress the ring C, thereby compressing and deforming the thin-walled tube A to prevent it from slipping out. In addition, the one shown in Figure 2 inserts a thin-walled tube A into the main body D, compresses the part where the sealing ring rubber hole is installed using a hydraulic machine, and compresses and squeezes the part G into the thin-walled tube D to remove it. is prevented. However, in any of the embodiments, when the water inside the pipe freezes in a cold region, the pressure acting inside the pipe causes the pipe to come out of the main body, making it impossible to put it into practical use. Furthermore, the device shown in FIG. 2 uses a hydraulic machine as a tool and is therefore unsuitable for piping in a narrow room.

The present invention is a thin-walled water pipe joint designed to solve the above-mentioned problems.

Technical means to solve the problem The present invention includes a support member having an outer diameter approximately equal to the inner diameter of the thin-walled pipe at the end of the thin-walled pipe, and at least one of which is slightly larger than the outer diameter of the thin-walled water pipe. Insert the end of the pipe to an appropriate position into a joint body provided with a cylindrical portion of the same diameter, and connect the thin-walled water pipe with at least several bolts provided perpendicular to the axis of the joint body and the support body. It is characterized by being clamped and fixed, that is, by inserting a support inside the thin-walled tube, it not only deforms the thin-walled tube, but also
Since it is sandwiched between the support body and several bolts, it is possible to extremely firmly prevent the thin-walled tube from coming off. In addition, only a tool for tightening the same bolt from small diameter to large diameter is required for connection, and the work efficiency is extremely high.

Next, embodiments of the present invention will be described based on the drawings.

FIG. 3 shows an embodiment of the present invention, in which a support 4 is provided with a groove 2 and a collar 3 at the end 1' of a thin-walled tube 1.
A seal rubber 7 for sealing the outer periphery of the thin-walled tube 1 is installed in a joint body 6 provided with a cylindrical portion 5 having a slightly larger diameter than the outer diameter of the thin-walled tube 1. The end 1' of the pipe 1 is inserted to an appropriate position, and the bolt 8 is attached to the joint body 6.

Fig. 4 shows another embodiment of the support according to the present invention, in which the groove provided in the support 4 is a V-groove 2', and the bolt 8 used in this case has a conical tip. , as shown in FIG.
It is also conceivable to provide a groove 9 for installing the notched ring 10 in the groove, and press the ring 10 with a bolt 8 to press and clamp the thin-walled pipe 1 therein. Further, as shown in FIG. 6, it is conceivable that the support body 4 has a substantially triangular cross section in order to improve its strength.

Next, the effects of the present invention will be explained.

In FIG. 3, when the bolt 8 provided on the joint body 6 is tightened, the thin-walled pipe 1 is pressed and deformed.
It is pressed against the support body 4 inserted into the thin-walled tube 1.
A recess 2 is provided in the support 4, and a thin-walled tube deformed by pressing with a bolt 8 is held between the bolt 8 and the recess groove 2 and fixed. Therefore, even if the water inside the pipe freezes in a cold region and a large pressure is generated inside the pipe, the thin-walled pipe 1 is held without slipping.

As described above, the thin-walled water pipe joint of the present invention firmly fixes the thin-walled pipe using a support inserted inside the thin-walled pipe and a bolt that pinches and compresses the thin-walled pipe from the outer periphery of the thin-walled pipe. It is possible to prevent the piping from falling out of the joint due to freezing inside the pipe, which was the biggest drawback of the thin-walled pipe joints that were used, and it is also possible to provide a thin-walled water pipe joint for cold regions that can be constructed with common tools. .

[Brief explanation of the drawing]

1 and 2 are sectional views of a conventional embodiment, FIGS. 3 and 5 are sectional views of an embodiment of the present invention, and FIGS. 4 and 6 are sectional views of an embodiment of the present invention. This is an example of another support that was implemented. Reference numeral 1 indicates a thin-walled water pipe, 1' an end of the pipe, 4 a support, 5 a cylindrical portion, 6 a joint body, and 8 a bolt.

Claims (1)

[Scope of utility model registration request] A joint in which a support body having an outer diameter approximately equal to the inner diameter of the thin-walled water pipe is inserted into the end of the thin-walled water pipe, and at least one side is provided with a cylindrical portion having a slightly larger diameter than the outer diameter of the thin-walled water pipe. The end of the pipe is inserted into the main body to an appropriate position, and the thin-walled water pipe is sandwiched and fixed by at least several bolts provided perpendicular to the axis of the joint main body and the support body. Thin wall pipe fittings for water supply.