JPH094763A - Clamp for gripping and fixing piping - Google Patents

Abstract

PURPOSE: To prevent the occurrence of displacement in a position due to slackness on the piping side and vibration of a clamp for fixing a piping temporarily locked in a prescribed position by a method wherein a hook hole is formed in one of a pair of mounting walls and a hook wall fitted in the hook hole and protruding in a folding fixing state is formed on the other wall. CONSTITUTION: After a gripping wall 2 and a piping 1 are adhered to each other, mounting walls 3a and 3b are closed to a state to grip the piping 1 by the gripping wall 2 and a hook wall 7 protruded from the mounting wall 3b is fitted in a hook hole 6 formed in the mounting wall 3a. The tip of the hook wall 7 is folded in such a state to point to the direction of the gripping wall 2 and a pair of the mounting walls 3a and 3b are fastened against each other in such a manner to be overlapped with each other, and a clamp 5 for surely gripping a piping is temporarily locked in a prescribed position in the longitudinal direction of the piping 1. This constitution pulls the gripping wall 2 to the piping 1 side and brings the gripping wall into pressure contact therewith, improves the gripping force of the piping 1 by the clamp 5 for surely fixing a piping, and prevents the occurrence of slackness to the piping 1 side for long period specification.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided in automobiles, various equipment, devices, etc. for the purpose of intake and exhaust, refueling, etc., and fixes a relatively thin pipe made of metal or synthetic resin to a mating base. The present invention relates to an improvement of a clamp for gripping and fixing a pipe used for

[0002]

2. Description of the Related Art Conventionally, a pipe having a relatively small diameter made of metal or synthetic resin has been fixed to a mating base body of an automobile, various equipments, devices, etc. for the purpose of intake and exhaust, oil supply and the like. Here, the pipe to be fixed to the mating base body is supplied to an assembly process of equipment, devices, etc. in a state where a pipe gripping and fixing clamp is temporarily fixed at a predetermined position in the longitudinal direction of the pipe. Then, in the above-mentioned assembling step, the assembly bolt is inserted into the mounting hole provided in the mounting wall of the clamp for holding and fixing the pipe, and the pipe is fixed by being fastened to the mating base body. Conventionally, as shown in FIG. 4, a metal pipe gripping / fixing clamp 5 temporarily fixed to a predetermined position in the longitudinal direction of the pipe has a gripping wall 2 for gripping the pipe 1 at a substantially central portion in the longitudinal direction. A pair of mounting walls 3a and 3b, which are curved and formed so as to be continuous with the gripping wall 2 and extend integrally on both sides of the gripping wall 2, at the central portions in the longitudinal direction of the pair of mounting walls, where the mounting holes overlap with each other. 4 was penetrated.

[0003]

When the pipe fixing clamp is installed at a predetermined position of the pipe, first, the tip ends of the pair of mounting walls 3a and 3b of the pipe fixing clamp 5 are overlapped with each other. The work for releasing and mounting the pipe 1 on the gripping wall 2 is performed. At this time, the inner diameter of the gripping wall 2 must be increased in order to mount the pipe. Next, in order to bring the outer peripheral surface of the pipe 1 into close contact with the inner surface of the gripping wall 2, a pair of mounting walls 3a,
Although the diameter of the gripping wall 2 is reduced so as to overlap 3b, the diameter of the gripping wall 2 is not easily reduced to a specified value by springback after the diameter of the gripping wall 2 is once expanded, and therefore, for fixing the gripping of the pipe. Even if the clamp 5 is temporarily fixed to the pipe 1, the clamp 5 tends to be released particularly on the tip side of the mounting walls 3a and 3b.
In such a state, the pipe fixing clamp 1 is often deviated from the fixed position in the axial direction and / or the circumferential direction due to vibration or the like while the pipe is conveyed to be fixed to the fixed position of the mating base body. As a result, the position adjustment work has to be carried out at the assembly process site of the equipment, device, etc., which is a big problem at the site of the mass production system.
Further, since the holding force of the pipe 1 by the pipe fixing clamp 1 is generated by the bolts that are fastened to the mounting holes 4 of the pair of mounting walls 3a and 3b, there is no difference between the bolt and the gripping wall 2. There is no supporting means, and the pipes may loosen due to the tendency that the mounting walls tend to open in the directions opposite to each other due to long-term use.

The present invention solves the above-mentioned problems and prevents loosening on the piping side even after long-term use.
In addition, the pipe fixing clamp temporarily fixed at a predetermined position in the longitudinal direction of the pipe during transportation for fixing the pipe to the fixed position of the mating base does not shift its position due to vibration or the like. It is an object of the present invention to provide a pipe fixing clamp that makes the work extremely easy.

[0005]

Means for Solving the Problems As a result of repeated research and development for solving the above-mentioned problems, the inventors of the present invention have found that one of a pair of mounting walls of a pipe fixing clamp has a hook hole and the other has a hook hole. It has been found that the situation can be improved by providing the mounting wall with a claw wall which can be fitted in the hanging hole and protruded in a state of being able to be folded and fixed, thereby completing the present invention.

Therefore, according to the present invention, a gripping wall for gripping a pipe is formed in a curved shape at a substantially central portion in the longitudinal direction, and a pair of mounting walls are integrally formed on both sides of the gripping wall so as to be continuous with the gripping wall. In a clamp for holding and fixing a pipe, which is ejected and has mounting holes penetrating with each other on the mounting wall,
A hook hole is formed in one of the pair of mounting walls at a position extending from the gripping wall, and a claw wall projects from the other wall corresponding to the hook hole, and The main feature of the claw wall is a pipe gripping / fixing clamp in which the tip fitted into the hooking hole is folded back and fixed toward the gripping wall forming direction, and when the claw wall is folded back, the mounting wall is fixed. One of them is formed by crimping on the outer peripheral surface side of the pipe.

[0007]

According to the present invention, of the pair of mounting walls constituting the pipe gripping and fixing clamp, the claw wall projecting from one mounting wall at a portion extending from the gripping wall is bored in the other mounting wall. By making the tip of the claw wall fitted into the hooking hole insertable into the hooking hole and folding back and fixing the tip of the claw wall toward the direction of forming the gripping wall, the gripping wall is pulled toward the pipe side by folding the claw wall. The pipe gripping force is improved, so that the pipe does not become loose during long-term use, and the pipe grips and is fixed against springback that occurs when the pipe is attached to the gripping wall. The gripping force at the time of temporarily fixing the use clamp to the pipe can be increased. This prevents the position change after the temporary fixing process of the pipe gripping and fixing clamp, which has frequently occurred in the process of transporting the pipe until it is fixed to the main body, and prevents the work of fastening the pipe to the mating base body. It became possible to carry out quickly and easily.

[0008]

The details of the embodiments of the present invention will be described below. FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a sectional view when an embodiment of the present invention is mounted on a pipe, and FIG. 3 is a sectional view when another embodiment of the present invention is mounted on a pipe. It is a figure.

As shown in FIGS. 1 to 3, the pipe gripping and fixing clamp 5 is made of a strip of metal, and a gripping wall 2 for gripping the pipe 1 is formed in a curved shape at a substantially central portion in the longitudinal direction. The pair of mounting walls 3a and 3b are connected to the gripping wall 2 and extend integrally on both sides thereof.
a and 3b are formed to be flat (see FIG. 2) or are bent into a substantially V-shape (see FIG. 3), and mounting holes 4 are formed so as to overlap at corresponding positions. ing. One of the pair of mounting walls 3a and 3b (that is, the mounting wall 3a facing the mating base body 10)
A hooking hole 6 is formed near the gripping wall 2 at a position substantially tangential to the outer peripheral surface of the pipe 1. On the other side of the mounting wall 3b, a claw wall 7 that can be fitted into the hanging hole 6 is projected corresponding to the hanging hole 6, and the claw wall 7 is fitted into the hanging hole 6. After that, the tip of the claw wall 7 is configured so that it can be folded back and fixed toward the gripping wall 2, and the width and thickness of the claw wall 7 are equal to or slightly smaller than the length and width of the hanging hole 6. Has been formed. In addition, 11 is an elongated hole formed in the portion so that the bending work of the gripping wall 2 can be facilitated,
Reference numeral 13 denotes an elastic force generated between the inner peripheral surface of the gripping wall 2 and the outer peripheral surface of the pipe in order to prevent the outer peripheral surface of the pipe from being scratched when the pipe 1 is mounted on the clamp 5 for fixing the pipe. Is an elastic bush provided to increase the gripping force of the gripping wall.

When temporarily fixing the pipe gripping / fixing clamp 5 configured as described above to the pipe 1, first, the tips 8 of the pair of mounting walls 3a and 3b are released, and the pipe 1 is inserted from this releasing portion. The pipe 1 is attached to the gripping wall 2, and the inner surface of the gripping wall 2 and the outer peripheral surface of the pipe 1 are brought into close contact with each other. After the gripping wall 2 and the pipe 1 are brought into close contact with each other in this manner, the gripping wall 2
The attachment walls 3a and 3b are closed to each other until the pipe 1 can be gripped, and the claw wall 7 projecting from the attachment wall 3b is fitted into the hook hole 6 formed in the attachment wall 3a. Is folded back with the tip of the pipe facing the gripping wall 2, and the pair of mounting walls 3a and 3b are fastened so as to overlap each other, and the pipe gripping clamp 5 is temporarily placed at a predetermined position in the longitudinal direction of the pipe 1. I stopped it. Due to the folding back of the claw wall 7, the gripping wall 2 is pulled toward the pipe 1 side and brought into pressure contact,
Therefore, the gripping force of the pipe 1 by the pipe gripping / fixing clamp 5 is improved to prevent loosening on the pipe 1 side during long-term use, and to resist the springback generated when the pipe 1 is mounted on the gripping wall 2. Clamp for holding and fixing piping 5
Is reliably held at a predetermined position in the longitudinal direction of the pipe 1.

When the claw wall 7 is folded back, as shown in FIG. 3, one of the mounting walls 3a is caulked to the outer peripheral surface side of the pipe 1 so as to form a substantially V-shaped recess 12. If it is configured along the outer peripheral surface of 1, the contact area between the gripping wall 2 and the pipe 1 is increased, and the gripping force is further improved. When temporarily fixed in this way, even when the pipe 1 is subsequently conveyed, no change is observed in the temporary fixing position of the pipe gripping and fixing clamp 5, and the mounting bolt 9 is tightened in the mounting hole 4. By doing so, the pipe 1 is attached to the mating base body 10.
The pipe gripping / fixing clamp 5 can be reliably temporarily fixed to a predetermined position in the longitudinal direction of the pipe 1 until the pipe is fixed.

[0012]

When the present invention is carried out, by adopting a simple measure as described above, the claw wall is folded back to pull the gripping wall toward the pipe side for pressure contact, and thus the gripping force of the pipe is reduced. Improves the looseness on the pipe side during long-term use, and improves the temporary holding force of the pipe gripping and fixing clamp. It is possible to prevent the occurrence of fluctuations in the direction and the circumferential direction, and to make it possible to immediately perform the fastening work to the mating base body by omitting the position adjustment required when assembling the device.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view when an embodiment of the present invention is attached to a pipe.

FIG. 3 is a sectional view when another embodiment of the present invention is assembled to a pipe.

FIG. 4 is a cross-sectional view when a conventional example is attached to a pipe.

[Explanation of symbols]

 1 Pipe 2 Gripping Wall 3a Mounting Wall 3b Mounting Wall 4 Mounting Hole 5 Pipe Gripping Clamp 6 Hanging Hole 7 Claw Wall 8 End 9 Mounting Bolt 10 Main Body

Claims (2)

[Claims] 1. A gripping wall for gripping a pipe is curvedly formed at a substantially central portion in the longitudinal direction, and a pair of mounting walls are integrally extended on both sides of the gripping wall so as to be continuous with the gripping wall. In a clamp for gripping and fixing a pipe, wherein mounting holes are provided through the mounting wall so as to overlap with each other. One of the pair of mounting walls has a hooking hole formed at a position extending from the gripping wall. Further, a claw wall projects from the other mounting wall in correspondence with the hanging hole, and the claw wall is fixed by folding back the tip fitted into the hanging hole toward the grip wall forming direction. A clamp for gripping and fixing a pipe. 2. The pipe gripping and fixing clamp according to claim 1, wherein when the claw wall is folded back, one of the mounting walls is formed by crimping on the outer peripheral surface side of the pipe.