JP2001200965A - Push ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an inverse inclination of a bow-shaped claw in a push ring fitted around the end part outer periphery of a fluid pipe and used to join an opposed fluid pipe. SOLUTION: This push ring 1 being fitted around the end part outer periphery of one fluid pipe and connecting the one fluid pipe to an end part of the other fluid pipe, is composed of an annular ring-shaped push ring body 2 for forming an inner peripheral groove 6 divided into plural parts by a partition wall on the radial directional inner periphery, the bow-shaped claw 4 fitted and housed in the inner peripheral groove 6 in a state movable and tiltable in the ring center direction of the push ring body 2 and a support member 10 elastically installed between a side wall of at least the inner peripheral groove 6 and a side surface of the bow-shaped claw 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to connect one fluid pipe such as a water pipe or a gas pipe to the other fluid pipe by externally fitting the outer circumference of an end of the fluid pipe. Regarding the pressing wheel.

[0002]

2. Description of the Related Art Conventionally, as a press ring used for connecting opposed fluid pipes, for example, those shown in FIGS. 10 and 11 are known.

In this method, an annular pressing ring main body A is fitted around the outer periphery of an end of a fluid pipe P, and a flange D of a fluid pipe P 'opposed to the pressing ring main body A is connected with bolts E and nuts F. The bow C is engaged with the outer periphery of the fluid pipe P by pressing a bolt B provided on the main body A.

When transporting a pressing wheel composed of the pressing ring body A and the bow-shaped nail C, the bow-shaped nail C is prevented from falling off the pressing ring body A due to vibration or the like during transportation.
The claw fixing rubber H is pushed between the partition wall G of the pressing ring body A and the end of the bow C so as to be crushed.

[0005] The fluid pipes P, which are joined using this pressing ring,
In the case where P 'moves relatively in the direction in which P' comes out, as shown in FIG. 10, the bow-shaped pawl C inclined to the right side of the pressing ring main body A rotates clockwise around the contact point with the bolt B, thereby causing the bow-shaped pawl C to rotate. The tip of C bites into the outer periphery of the fluid pipe P, and the fluid pipes P and P 'are prevented from being separated.

[0006]

However, according to the above-mentioned prior art, when the bolt B is pushed in to join the fluid pipes P and P ', a part of the arc-shaped pawls C of the pressing ring body A Fluid pipes P and P '
In this case, the tip of the arcuate claw C is displaced from the outer periphery of the fluid pipe P by rotating clockwise around the contact point with the bolt B when the relative movement in the direction in which there were.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problem, and prevents a reverse inclination of an arcuate claw in a press ring which is fitted around an outer peripheral portion of an end of a fluid pipe and is used for connecting opposed fluid pipes. The task is to

[0008]

In order to solve the above-mentioned problems, a pressing ring according to the present invention is fitted around an outer periphery of an end of one fluid pipe, and the one fluid pipe is attached to an end of the other fluid pipe. An annular pressing ring body in which an inner peripheral groove divided into a plurality by a partition is formed on a radially inner periphery, and a state in which the pressing ring body can move and tilt in the ring center direction. And a support member elastically mounted between at least a side wall of the inner peripheral groove and a side surface of the arcuate claw. . According to the present invention, the arcuate claw is housed in the inner circumferential groove of the annular pressing ring main body so as to be movable and tiltable in the ring center direction, and
Since the support member is elastically mounted in the gap between the side wall of the inner peripheral groove and the side surface of the arcuate claw, the arcuate nail is installed in a predetermined inclined posture in the inner peripheral groove, and when the bolt is pushed in, the arcuate nail is Is not tilted in an inappropriate direction.

It is preferable that a mounting recess for fitting a supporting member is formed on a side surface of the bow. With this configuration, since the mounting concave portion into which the support member is fitted is formed on the side surface of the arcuate claw, the support member can be always installed at a fixed position, and stable performance can be exhibited.

A support recess is formed in the inner peripheral groove side wall facing the mounting recess of the arcuate claw for fitting a support member, and the support recess is engaged with an end of the annular pressing ring body in the center direction. Preferably, a projection is formed. With this configuration, the support recess is formed at the position opposite to the mounting recess in which the support member is fitted, and the locking protrusion is formed at the center end of the annular pressing ring body of the support recess. The support member installed in the concave portion is locked by the locking projection, so that the support member is prevented from falling off from the inner peripheral groove, and the arcuate claw can be reliably supported.

It is preferable that the support member is formed in a shell shape in which one end of a cylinder is narrowed and sharpened. With this configuration, since the support member is formed in a bullet shape with a pointed tip, the operation of inserting the support member between the inner peripheral groove and the arcuate claw is facilitated.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a push ring 1 of the present invention is attached to an outer periphery of an end of a fluid pipe, and is used for connecting opposed fluid pipes. And an arcuate claw 4 (see FIG. 5).

The pressing ring main body 2 is formed in an annular shape, and a plurality of partitions 5 project radially inward from the pressing ring main body 2 at predetermined intervals in the circumferential direction. ,
An inner peripheral groove 6 for accommodating the bow 4 is formed between the five.

The pressing ring body 2 has an arcuate claw 4 having an inner peripheral groove 6.
A plurality of push bolts 3 are provided in the circumferential direction for pressing the bow 4 and engaging with the fluid pipe when stored in the inside.
Reference numeral 7 denotes a bolt insertion hole for a bolt used to connect the press wheel 1 attached to the fluid pipe to a flange of the opposed fluid pipe.

A support recess 8 for accommodating the support member 10 is dug into both ends of the side wall 11 of each inner peripheral groove 6 on the side (left side in FIG. 2) externally fitted to the fluid pipe. An engaging projection 9 is formed in the center of the pressing wheel body 2 at 8.

As shown in FIG. 5, the arcuate claw 4 is provided at its tip with an arc-shaped claw 4c corresponding to the outer diameter of the fluid pipe.
At both ends of the side surface 4b, mounting recesses 4a, 4a into which the support member 10 is inserted are formed.

The support member 10 is a deformable elastic body formed in a cylindrical shape and is made of synthetic rubber, soft plastic, or the like. One end of the support member 10 is narrowed and pointed, and has a shell shape as a whole. (See FIG. 6).

In the pressing ring 1 of the embodiment constructed as described above, first, the claw portion 4c of the bow-shaped claw 4 is inserted into the inner circumferential groove 6 toward the center of the pressing ring body 2, and the bow-shaped claw 4 is inserted. Side 4b of
The support member 10 is pushed into the space defined by the mounting recess 4 a provided on the inner peripheral groove 6 and the support recess 8 provided on the side wall 11 of the inner peripheral groove 6, and the lower part of the support member 10 is engaged with the locking projection 9. Let it.

Therefore, the supporting member 10 is
To prevent it from falling off from the pressing ring main body 2, while pressing into the mounting concave portion 4 a of the arcuate claw 4 to press the arcuate claw 4 against the side wall of the inner circumferential groove 6 by its elasticity. Never fall off.

A supporting member 10 is inserted into the side wall of the inner peripheral groove on the side of the fluid pipe on which the pressing ring 1 is fitted and the side surface of the arcuate claw 4 so that the arcuate claw 4 is inclined rightward as shown in FIG. This prevents the bow 4 from tilting backward when the push bolt 3 is screwed.

In order to engage the bow 4 with the fluid pipe, the push nail 3 is screwed into the bow 4 so that the bow 4 is pressed into the fluid pipe to fix the push ring 1 to the fluid pipe. (See FIG. 9). By inserting a bolt through the push ring 1 through the bolt insertion hole 7, the fluid pipe is connected to the flange of the fluid pipe facing the fluid pipe, and then the arcuate claw 4 is cut into the fluid pipe.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration of the present invention is not limited thereto.

For example, in the embodiment, the support member 10 is shown in FIG.
As shown in (1), it is a tapered cylindrical shape, but it may be a thick plate-like body, and is not limited to this as long as it is elastic and can support the arcuate claw 4.

[0025]

According to the present invention, the arc-shaped pawl is housed in the inner peripheral groove of the annular press ring main body so as to be movable and tiltable toward the center of the ring. Since the supporting member is elastically mounted in the gap with the side surface, the bow-shaped claw is installed in a predetermined inclined posture in the inner circumferential groove, and the bow-shaped nail is inclined in an inappropriate direction when the bolt is pushed in. There is no.

According to the second aspect of the present invention, since the mounting recess into which the support member is fitted is formed on the side surface of the arcuate claw,
The support member can always be installed at a fixed position,
Stable performance can be exhibited.

According to the third aspect of the present invention, the supporting recess is formed at the position opposing the mounting recess, and the locking projection is formed at the center end of the annular pressing wheel body of the supporting recess. Since the support member is formed, the support member provided in the support concave portion is locked by the locking protrusion, so that the support member is prevented from dropping from the inner peripheral groove, and the bow-shaped claw can be reliably supported.

According to the fourth aspect of the present invention, since the supporting member is formed in the shape of a bullet with a sharp pointed end, the work of inserting the supporting member between the inner peripheral groove and the arcuate claw is facilitated.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view of a pressing wheel main body in a pressing wheel according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a 2-2 cross-sectional view, similarly.

FIG. 4 is a 3-3 cross-sectional view.

5 (a) is a plan view, FIG. 5 (b) is a front view, and FIG. 5 (c) is a side view of an arcuate claw according to an embodiment of the present invention.

FIG. 6 is a perspective view of a support member according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a state in which an arcuate claw is attached to the pressing wheel body according to the embodiment of the present invention.

FIG. 8 is also a 4-4 sectional view.

FIG. 9 is also a 5-5 cross-sectional view.

FIG. 10 is a cross-sectional view of a main part showing a state where a conventional press wheel is attached to a fluid pipe.

FIG. 11 is also a partially cutaway front view.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 push wheel 2 push wheel body 3 push bolt 4 bow 4 a mounting recess 4 b side surface 4 c claw 5 partition wall 6 inner peripheral groove 7 bolt insertion hole 8 support recess 9 locking protrusion 10 support member 11 side wall

Claims (4)

[Claims] 1. A push ring externally fitted to an outer periphery of an end of one fluid pipe and connecting the one fluid pipe to an end of the other fluid pipe, wherein the push ring is divided into a plurality of parts by a partition wall. An annular pressing ring main body having a circumferential groove formed on a radially inner circumference; an arcuate claw fitted and housed in the inner circumferential groove in a state in which the pressing ring main body can move and tilt in a ring center direction; A press wheel comprising: a support member elastically mounted between a side wall of a groove and a side surface of an arcuate claw. 2. The press wheel according to claim 1, wherein a mounting recess for fitting a support member is formed on a side surface of the bow. 3. A support recess for fitting a support member is formed on the side wall of the inner peripheral groove facing the mounting recess of the bow-shaped claw, and the support recess is formed at an end of the annular pressing ring body in the center direction. The pressing wheel according to claim 1 or 2, wherein a locking projection is formed. 4. The support member is formed in a bullet shape in which one end of a cylinder is narrowed and sharpened.
A pressing wheel according to any of the above.