JP2607506Y2 - Fitting for pipe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to an insulating bushing fitted to the end of a pipe for electric wiring, and a pipe for a coupling fitted to the end of the pipe when connecting a pipe for electric piping. Related to fittings.

[0002]

2. Description of the Related Art Electrical wiring has been wired in a metal pipe such as a steel pipe to protect the wiring from external impact. Therefore, an insulating bushing is fitted and installed at the end of the pipe so that the wiring is not rubbed at the end of the pipe. Further, when connecting two pipes, both ends of the coupling are fitted and installed at the ends of the two pipes.

In a conventional pipe fitting such as an insulating bushing 20 and a coupling 24, a screw 22 is screwed inward from an outer surface of a ring 21 or a ring 23 which can be fitted to an end of the pipe 1. The tip of the screw 22 was pressed against the surface of the pipe 1 to fix the pipe 1 and the pipe fitting (FIGS. 5A and 5B).

[0004]

SUMMARY OF THE INVENTION In the above prior art,
At the time of removing the bushing, the screw 22 must be rotated, and there is a problem that the operation is complicated.

[0005]

However, the present invention solves the above-mentioned problem by providing a fixing tool in the annular groove inside the base, the tip of which protrudes from the inner side surface of the base and can be stored in the annular groove. Settled.

Namely this invention is the edge of the pipe provided with a hook can hook projecting into the opening of one side of the ring-shaped base body that can be fitted to the end of the pipe, inside said base body
In addition , an annular groove is provided around the opening on the other side, and in the annular groove, the tip protrudes from the inner side surface of the base and is pressed from an elastic material that can be stored in the annular groove. The fixing tool is one of an annular band that can be inserted into the annular groove.
Around the entire circumference of the side edge, the annular band is folded back to the other side edge.
This is a fitting for a pipe, characterized in that an elastic piece directed inward is protruded as described above. In addition, a locking ridge that can hang the edge of the pipe is provided at an intermediate portion of a ring-shaped base that can be fitted to an end of the pipe, and annular ridges are formed on both sides of the locking ridge inside the base. the grooves are circumferentially, the annular groove, tip fitted fixture consisting retractable elastic material on the inner surface than the projection vital pressurizing and <br/> the annular groove of the base, said fixture Is an annular band that can be inserted into the annular groove.
Around the entire circumference of the side edge, the annular band is folded back to the other side edge.
A brace fitting pipe which is characterized by being configured to collision set the elastic piece toward the sea urchin inside.

[0007] Further, the fixing tool is provided with an elastic piece projecting at a predetermined interval over the entire periphery of one side edge of the annular band that can be inserted into the annular groove, with its tip inclined inward, and the tip of the elastic piece is provided. It is a fitting for pipes, the edges of which are aligned in the same direction and formed obliquely.

[0008]

Since the end of the fixture can press the inner surface of the pipe, the pipe fitting can be fixed to the pipe without using screws. Further, since the hooking ridge is provided, the pipe comes into contact with the hanging ridge, so that the pipe fitting device can be held at a predetermined position without fear of moving to the center of the pipe.

[0009]

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. This embodiment is an example applied to an insulating bushing.

The pipe 1 is inserted into one opening of a ring-shaped base 3 having an inner diameter that can be fitted into the end 2 of the pipe 1 for electric wiring.
A locking ridge 4 that can hang the edge of is provided. The inside diameter D ₁ of the hooking ridge 4 is formed to be the same as the inside diameter of the pipe 1. An annular groove 5 is provided inside the base 3 (FIG. 1).
(A)).

Elastic strips 7, 7 are provided on one side edge of an annular band 6 having elasticity so as to be able to be inserted into the annular groove 5, and a gap 8 is provided. Set up. The tip 9 of the elastic piece 7 is formed obliquely in the same direction,
0 (FIG. 3A). In the above, the elastic piece
7 and 7 are provided so as to be folded back to the other side of the annular band 6.
(FIGS. 1, 2, and 3). The fixture 10 is inserted into the annular groove 5. At this time, the tip 9 of the elastic piece 7 protrudes from the inner surface of the base 3 and is stored in the annular groove 5 when pressurized. As described above, the insulating bushing 1
1 (FIGS. 1A and 1B).

Next, the use of the present invention based on the above embodiment will be described.

An opening on the other side of the retaining ridge 4 of the insulating bushing 11 is fitted to the end 2 of the pipe 1 for electric wiring (FIG. 1A). At this time, the elastic piece 7 of the fixture 10 is
The insulating bushing 11 is deformed by being pushed by the outer surface of the pipe 1 and is accommodated in the annular groove 5 to press the outer surface of the pipe, so that the insulating bushing 11 does not fall out of the pipe 1 (FIG. 2). At this time, since the inner diameter D ₁ of the hooking ridge 4 is formed to be the same as the inner diameter of the pipe 1, the pipe 1 and the hooking ridge 4 are flush with each other, and the wiring cable 12 is connected to the inside of the pipe 1. Cable 1
2 does not get caught on the edge of the insulating bushing 11 (FIG. 2). Further, since the tip of the elastic piece 7 is formed obliquely in the same direction, if the insulating bushing 11 is pulled out while rotating in accordance with the oblique direction, the insulating bushing 11 can be easily removed from the pipe 1. .

In the above embodiment, the elastic pieces 7, 7 are provided around the annular band 6 in the axial direction. However, they can be provided so as to project at a predetermined angle from the axial direction (FIG. 3B). Further, the width of the gap 8 when the elastic piece 7 is protruded from the annular band is free .

[0015]

Embodiment 2 Another embodiment of the present invention will be described with reference to FIGS. This embodiment is applied to a coupling for connecting two pipes.

The pipe 1 is provided at an intermediate portion of a ring-shaped base 13 having an inner diameter which can be inserted into the end 2 of the pipe 1 for electric wiring.
Are provided around the edge of the hook. The inside diameter D ₂ of the hooking ridge 14 is formed to be the same as the inside diameter of the pipe 1. Inside the base 13, the locking ridge 14
The annular grooves 15, 15a are provided on both sides of the
(A)).

As in the first embodiment, the annular grooves 15, 15
Elastic pieces 7 and 7 are provided on one side edge of an annular band 6 having elasticity so as to be able to be inserted into a, and a gap 8 is provided. The distal end 9 of the elastic piece 7 is formed obliquely in the same direction to form a fixing tool 10 (FIG. 3).
(A)). The fixture 10 is inserted into the annular grooves 15, 15a to form a coupling 16 (FIG. 4A).
Similarly to the first embodiment, the tip 9 of the elastic piece 7 protrudes from the inner surface of the base 13 and is stored in the annular grooves 15 and 15a when pressurized.

The use of the coupling 16 of the present invention based on the above embodiment will be described.

One opening 17 of the coupling 11 is fitted to each end 2 of the pipe 1 for electric wiring, and the other opening 17 is fitted to the end 2 of the pipe 1 for electric wiring. (FIG. 4 (a)). At this time, the elastic piece 7 of the fixture 10 is pressed by the outer surfaces of the pipes 1 and 1 to be deformed, and the annular grooves 15 and 15a are deformed.
Since the coupling 16 is housed inside and pressurizes the outer surface of the pipe 1, there is no possibility that the coupling 16 will fall out of the pipe 1 (FIG. 4).
(B)). At this time, since the inner diameter D ₂ of the latching ridges 14 are formed in the same as the inner diameter of the pipe 1, it becomes flush with the pipe 1 and the latching projection 14, the distribution cable 12 in the pipe 1 There is no possibility that the wiring cable 12 will be caught on the coupling 16 or the edge of the pipe 1 when the cable is inserted through the cable (FIG. 4B). Also, as in the first embodiment, the tip of the elastic piece 7 is formed obliquely in the same direction, so that if the coupling 16 or the pipe 1 is pulled out while rotating in accordance with the oblique direction, the pipe can be easily pulled out. 1 to coupling 16
Can be removed.

Other embodiments of the fixing device 10 in the above embodiment are the same as those in the first embodiment. Further, although the base 13 in the above-described embodiment has a ring shape, the shaft may be bent at a predetermined angle, that is, the opening may be provided at a position having a predetermined angle with respect to the axis (see the figure). Not).

[0021]

[Effects of the Invention] Since the pipe fitting and the pipe are fixed by using the elasticity of the fixture, other tools are not required when the pipe fitting is attached and detached, so that the pipe fitting fitting is attached. , And the removal operation can be simplified. In addition, the elastic piece of the fixture is housed in the annular groove
And pressurizes the outer surface of the pipe.
There is no danger of getting out of Ip.

[Brief description of the drawings]

FIG. 1A is a longitudinal sectional view of an embodiment of the present invention.
(B) is sectional drawing in the AA line of (a).

FIG. 2 is a longitudinal sectional view showing a state of use similarly.

FIGS. 3 (a) and 3 (b) are perspective views in which a part of the fixture is cut away.

FIG. 4A is a longitudinal sectional view of another embodiment of the present invention.
(B) is a longitudinal sectional view showing a use state similarly.

FIGS. 5A and 5B are longitudinal sectional views of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe 3 Substrate 4 Hanging protrusion 5 Annular groove 6 Annular band 7 Elastic piece 9 (End of elastic piece) 10 Fixture 11 Insulation bushing (fitting for pipe) 13 Base 14 Hanging protrusion 15, 15a Annular groove 16 Coupling (fitting for pipe)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 17/56 H02G 3/04 301 H02G 3/06 H02G 9/06

Claims (3)

(57) [Scope of request for utility model registration] An opening on one side of a ring-shaped base that can be fitted into an end of a pipe is provided with a locking ridge that can lock an edge of the pipe, and is provided inside the base , and Side
The annular groove is circumferentially in the opening, the annular groove, tip fitted fixture consisting retractable elastic material in said said annular groove and pressed vital pressure protrudes from the inner surface of the base body, said fastener
Extends over the entire circumference of one side edge of the annular band that can be inserted into the annular groove.
Inward so as to be folded back to the other side of the annular band.
A fitting for pipes, characterized in that said elastic piece is provided in a protruding manner . 2. A ring-shaped base which can be fitted on an end of a pipe is provided with a locking ridge on an intermediate portion of the ring-shaped base, and both sides of the locking ridge inside the base are provided. to respectively annular groove and circumferentially, the annular groove, tip fitted fixture consisting retractable elastic material and pressed protruding vital pressure than the inner surface of the base body in said annular groove, said fixture ,Previous
The entire circumference of one side edge of the annular band that can be inserted into the annular groove
Elasticity inward so as to fold back to the other side of the annular band
A fitting for pipes, characterized in that the pieces are protruded . 3. The fixing device according to claim 1, wherein the elastic pieces protrude at predetermined intervals over the entire circumference of one side edge of the annular band that can be inserted into the annular groove, with the tips thereof being inclined inward, and provided at predetermined intervals. 3. The pipe fitting according to claim 1, wherein the edges are aligned in the same direction and formed obliquely.