JP2551979Y2 - Clamp for pipe piping - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to clamps for pipes such as steel pipes and copper pipes, and particularly to fuels, air,
The present invention relates to a pipe pipe clamp suitable for pipes such as water.

[0002]

2. Description of the Related Art Conventional pipe pipe clamps for automobiles must be securely fixed to a vehicle body without moving or loosening even when subjected to severe vibration. Are used.

In this piping clamp 21, a pipe holding member 22 having a mounting hole 24 formed therein is bent and formed into an outer shape of a pipe 23, and is formed into a J-shape as shown by a virtual line. J
After fitting the pipe 23 to the pipe holding member 22 shaped like a letter, the opened tip 22a is crushed and crimped so that the J-shaped tip holds the pipe 23,
The pipe holding member 22 crimped to the pipe 23 was brazed in a furnace to be integrated.

[0004]

When the distal end portion 22a of the U-shaped pipe holding member 22 is crushed, if the pressing force is weak, the pipe 23 bent and formed into a predetermined shape rotates.
The pipe holding member 22 cannot be brazed in the correct mounting direction. If the pressing force is too strong, the outer circumference of the pipe is pressed together toward the center of the pipe 23, so that the pipe 23 is dented or deformed flat and the inner diameter of the pipe becomes small, and the flow rate becomes defective, The mounting dimension from the center of the pipe 23 to the center of the mounting hole 24 changes.

[0005] Even if the tip portion 22a is caulked with a substantially appropriate pressing force, when heated at a high temperature in the furnace, the tip portion 22a holding the pipe 23 is returned by thermal strain, causing buckling. As a result, the holding force was weakened, and the pipe holding member was rotated during heating in the furnace, resulting in displacement.

Due to such a problem, the conventional caulking operation of the piping clamp 21 requires skill. Buckling that occurs during heating of brazing in a furnace cannot be avoided even with skill, so that a pipe pipe clamp of uniform quality could not be obtained.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and a pipe pipe clamp according to the present invention is characterized in that both ends of a pipe holding portion which is curved in a circular shape of the outer shape of a pipe are directed outward. The protruding end of the pipe holding member that is formed to protrude into the mounting hole of the mounting member provided in the arc portion along the outer shape of the pipe holding member, and engages with the locking holes formed on both sides of the mounting hole. The pipe is pressed to the side to press the protruding end of the pipe holding member at the end face of the mounting hole of the mounting member, and the pipe held by the pipe holding member is gripped.

[0008] In a pipe pipe clamp as a reference example which does not require a right , a pipe holding member is formed by bending a tip end of a pipe holding member into a J-shape of an arc of a pipe outer shape, and an intermediate portion of the pipe holding member. Is bent toward the center of the pipe held by the pipe holding section, and the pipe is held between the end face of the tip of the tongue piece and the pipe holding section. It is characterized by the following.

[0009]

The clamp for pipe pipes of the present invention clamps the protruding ends at both ends of the pipe holding member holding the pipe and embraces and grips substantially the entire circumference of the pipe. Even if it is strengthened, the pipe is held firmly without deformation.

In a pipe pipe clamp as a reference example which does not require a right, when the tongue is bent toward substantially the center of the pipe held by the pipe holding portion, the tip of the tongue is wedge-shaped on the surface of the pipe. Is pierced in such a manner as to be driven in from the tangential direction, and the pipe is gripped by the pipe holding portion curved in an arc shape, so that the pipe is firmly held with a predetermined elasticity without deforming the pipe.

An embodiment of the present invention will be described below with reference to the drawings. Figures 1-5 in the embodiment of the present invention, the pipe holding metal fitting of this embodiment, FIG. 2, the pipe holding member 2 shown in FIG. 3, FIG. 4, the two members of the attachment member 3 shown in FIG. 5 It is configured.

The pipe holding member 2 is formed into a circular shape so as to wrap substantially the entire outer periphery of the pipe 4 and is formed into a pipe holding portion 5.
Are formed, and the projecting end portions 6 are formed by projecting both end portions outward. The interval between the two protruding ends 6 facing each other is
It is preferable that the gap is as small as a tightening margin for tightening the outer periphery of the pipe 4 with the pipe holding section 5, for example, about 0,5 mm. Two oval long holes 7 are formed in the circular pipe holding portion 5, and two oval long holes 8 are also provided in a portion where the pipe holding portion 5 and the protruding end 6 are connected.

The tip of the mounting member 3 having the mounting hole 13 formed therein is formed into an arc portion 9 having the same radius as the outer shape of the pipe holding member 2, and a mounting hole 10 is formed at the vertex of the arc portion 9. . The width B of the mounting hole 10 is equal to the protruding end 6 of the pipe holding member.
The protruding end portion 6 can be fitted and inserted in the same size as the outer width A. The step portion 11 is formed slightly wider than the width B and halfway through the mounting hole 10. Oval locking holes 12 are formed on both sides of the mounting hole 10.

The pipe 4 is fitted into the circular pipe holding portion 5 of the pipe holding member 2 and the projecting end 6
Into the mounting hole 10 of the mounting member 3. Next is the mounting hole 10
Are pressed against each other by a press or the like using an appropriate caulking jig. Then, the protruding end 6 of the pipe holding member is pinched by the end face of the mounting hole 10, and the pipe holding member 2 embraces the entire circumference of the pipe 4 like a collet chuck and firmly grips the same.

[0015] In挾圧the protruding end 6 when gripping the pipe 4, but gripping force when the top so as to engage the projecting end portion 6 at the stepped portion 11 of the mounting hole is preferably stable, pipe If the thickness of the holding member 2 and the mounting member 3, the wall thickness between the mounting hole 10 and the locking hole 12, and the interval between the protruding ends 6 are appropriately designed according to the gripping force, the step of the mounting hole can be reduced. This can be performed even if the unit 11 is omitted.

Thus, the pipe 4, the pipe holding member 2,
When the mounting member 3 is integrated and then brazed in a furnace in the same manner as before, the protruding end 6 of the pipe holding member is sandwiched by the thick mounting member 3 and the pipe 4 is firmly grasped. Thus, the pipe holding member 2 is accurately brazed without displacement.

The pressing force for pinching the protruding end 6 of the pipe holding member acts in the tangential direction of the pipe 4 and does not crush the pipe 4, so that the pipe 4 is not deformed and brazed in the furnace. And no displacement occurs even when heated to a high temperature.

Reference not shown in FIG. 6 and FIG.
The pipe holding fitting of the example pipe pipe clamp 1 </ b> A is one pipe holding member 15.

A pipe holding member 15 having a mounting hole 13 formed therein
Is bent into a J-shape into an arc shape of a pipe outer shape to form the pipe holding portion 16. The arc-shaped pipe holding portion 16 has an arc of about 200 ° larger than a semicircle.

Two small holes 17 are formed in the middle of the pipe holding member 15, and the tongue piece 18 is formed by cutting the pipe holding member 15 in a U shape from the small hole 17 toward the tip. .

After fitting the pipe 4 to the pipe holding portion 16, the tongue piece 18 is bent toward substantially the center of the pipe 4.
Then, the tip of the tongue piece 18 bites into the surface of the pipe 4, and the pipe 4 is firmly gripped by the end face of the tip of the tongue piece 18 and the pipe holding portion 16.

Since the tongue piece 18 is pushed from the tangential direction of the pipe 4 so as to drive the wedge, the pipe 4 is not deformed even if the bending pressing force is strong.

Since the tongue piece 18 and the pipe 4 gripped by the pipe holding portion 16 are firmly held by the elasticity of the pipe holding member 15, the holding force is weak even when heated to a high temperature by brazing in a furnace. Nothing. Accordingly, there is no displacement of the pipe holding member 15 due to brazing in the furnace.

As described above, the pipe pipe clamp of the present invention can firmly hold the pipe.
It can be used without brazing in the case of ordinary piping where vibration and impact are not severe.

[0025]

As described above, the pipe piping clamp of the present invention does not cause the pipe to be dented or deformed flat, and the pipe holding member does not displace even when brazing in a furnace at a high temperature. Even if it is not a skilled worker, products of uniform quality can be easily manufactured and the quality is improved. Since the pipe holding member such as the pipe holding member can be manufactured by stamping and molding such as a press, it is possible to mass-produce pipe pipe clamps of uniform quality at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional side view of a main part of an embodiment of a pipe pipe clamp.

FIG. 2 is a front view of a pipe holding member.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a side view in which a distal end portion of a mounting member is sectioned.

FIG. 5 is a bottom view of the mounting member.

[Fig. 6] For pipe piping as a reference example that does not require rights
It is a side view of a clamp .

[Fig. 7] For pipe piping as a reference example that does not require rights
It is a bottom view of a clamp .

FIG. 8 is a perspective view of a conventional pipe pipe clamp.

[Explanation of symbols]

 1.1A: Pipe Clamp 2.15: Pipe Holder 3: Mounting Member 4: Pipe 5.16: Pipe Holder 6: Protruding End 9: Arc 10: Mounting Hole 12: Locking Hole 18: Tongue Piece

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting member wherein a projecting end of a pipe holding member, which is formed by projecting both ends of a pipe holding portion curved in a circular shape of a pipe outer shape outward, is provided in an arc portion along the outer shape of the pipe holding member. The holding holes formed on both sides of the mounting hole are pressed against each other, and the protruding end of the pipe holding member is pressed against the mounting hole end surface of the mounting member. A pipe pipe clamp characterized in that a pipe held by the pipe is gripped.