JP2553894B2 - Locking and fixing piping by a clamp body and its fixing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention generally relates to automobiles, various machines, equipment, etc., and a pipe diameter of 20 m arranged as a supply passage for fuel, other oil supply, or air supply. The present invention relates to an anchoring fixed pipe by a clamp body which is attached at a proper position in a length direction of a metal pipe having a relatively small diameter of about / m or less, and a fixing method thereof.

[Prior Art] Conventionally, as this type of anchoring fixed pipe and its fixing method, as shown in FIG. 6, a bolt hole () is formed in a straight pipe peripheral surface portion at an appropriate position in the length direction of the pipe (P ₁ ). The holding wall portion is attached by a clamp body (11) having a circular gripping wall (14) integrally provided with a mounting wall (13) having the gripping wall (14), or the gripping wall (14). The peripheral surface to be adhered by the part (1) is welded and fixed by brazing.

[Problems to be Solved by the Invention] However, in the above-described conventional art, since the deposition is performed on the straight pipe peripheral surface portion in the length direction on the pipe (P ₁ ) side, or the welding peripheral surface is brazed, In the former case, due to the vibration of the vehicle body, machine, or equipment for a long time in the installed state, in the former case, the pipe (P ₁ ) is displaced in the length direction and the circumferential direction, or scratches are generated. If it is tightened, it may cause cracks or damage. In the latter case, the corrosion-resistant coating is applied to the entire product after heating and brazing, so that the plating process in a complicated bent shape causes a great deal of work trouble. There is a problem that workability is hindered and it is difficult to form a plating film having a desired high corrosion resistance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an engagement fixing pipe by a clamp body and a fixing method thereof, which effectively solves the above conventional problems.

[Means for Solving the Problem] In order to achieve the above object, the first embodiment of the present invention is directed to a bent portion formed of a relatively loose step or curve at a proper position in the longitudinal direction of a pipe having a small diameter. With a clamp body integrally provided with a gripping wall having a cross-section of a circular cross section having a shape conforming to the above, and a wall for attaching to the base body at one side wall end edge in the width direction, the gripping wall part is extended over the bent portion. The present invention is characterized in that the engaging and fixing pipe is formed by a clamp body which is configured to be attached and engaged in a wrapping manner.

The second embodiment is a clamp body in which an appropriate position in the length direction of a small-diameter pipe that is in a straight pipe state is provided in advance, and a mounting wall to a base body is integrally provided at one side wall edge of the width direction. The gripping portion is applied in a circular cross section, and in this state, the applied portion is subjected to a collective press molding process by a pair of split dies having a groove shape of a relatively loose step or curved shape, and the groove is formed. The present invention is characterized by a method of fixing an anchoring and fixing pipe by a clamp body, which is formed by forming simultaneous bent portions having a shape, and by which the gripping wall portion is adhered and engaged in a wrapped manner over the bent portions.

[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a fastening fixing pipe by a clamp body of the present invention and a fastening method constituted by the fixing method according to the fixing method. A plan view of the fixed pipe, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a state diagram before collective press working of FIG. 1, and FIG.
The figure is equivalent to FIG. 1 according to another embodiment, and FIG. 5 is FIG. 4B.
FIG. 3B is a cross-sectional view taken along the line B, showing (1) a holding wall (4) having a circular cross section, and a mounting wall (4) for attachment to a clamp body base body (not shown) at one side wall edge. The clamp body (P) integrally provided with the mounting wall (3) having the bolt holes (2) and the like is a pipe in a straight pipe state having a small diameter equal to or smaller than the pipe diameter, and a proper position in the length direction thereof. In the state in which the clamp wall (4) of the clamp body (1) is attached to the clamp body (1), the adhered portion is collectively pressed by a pair of split molds having a groove shape of a relatively loose step or curved shape. It is formed in an integral bent portion (P ') having a groove shape, and the gripping wall (4) is fixed by being simultaneously engaged in a wrapping manner across the bent portion (P').

[Operation] Since the present invention is configured as described above, after the clamp body (1) is attached to the proper position of the pipe (P) in the straight pipe state by wrapping the gripping wall (3), The clamp body and the pipe are integrally bent by a collective pressing molding process using a split mold to form a relatively loose bent portion (P '), and thereby the bent portion has a cross-sectioned gripping wall (4). By being attached in a wrapped manner by the pipe, the pipe is displaced relative to the clamp body in both the longitudinal direction (that is, the pipe is displaced by pulling or pressing in the longitudinal direction) and the circumferential position. As a result, it is possible to securely engage and fix without causing a displacement (a displacement due to twisting in the circumferential direction).

[Effects of the Invention] As described above, the fastening and fixing pipe by the clamp body according to the present invention and the method for fixing the same are clamped by wrapping the gripping wall (3) at an appropriate position of the pipe (P) in a straight loose state ( After 1) is attached, the clamp body and the pipe are integrally bent by a collective press molding process using a pair of split molds to form a relatively loose bent portion (P '), and thereby the bent portion is cross-sectioned. Even if it is in a vibrating state for long-term disposition, the displacement in both the length direction of the pipe side with respect to the clamp body can be achieved by the covering engagement of the gripping wall (4) in the shape of a circle. And the positional deviation in the circumferential direction is prevented by the eccentric engagement between the inner peripheral surface of the gripping wall and the outer peripheral wall of the pipe at the bent portion, and therefore, the scratches, cracks, or damages generated on the pipe side at the engaging portion. It can be fixed and locked securely by preventing Furthermore, it is possible to use pipes and clamps that have been subjected to coating treatment by plating, etc., and it is possible to significantly improve workability by eliminating the need for plating after fastening and fixing. It is a pipe and its fixing method.

[Brief description of drawings]

FIG. 1 is a plan view of an engagement fixing pipe by a clamp body showing an embodiment of the present invention and an engagement fixing pipe constituted by the fixing method according to the fixing method, and FIG. 2 is FIG. 1A-A.
Fig. 3 is a sectional view taken along the line, Fig. 3 is a state diagram before the collective press working of Fig. 1, Fig. 4 is a diagram corresponding to Fig. 1 according to another embodiment, and Fig. 5 is a sectional view taken along line BB in Fig. 4. FIG. 6 and FIG. 6 are vertical cross-sectional views of a fastening and fixing pipe showing a conventional example. (1) …… Clamp body, (2) …… Bolt hole, (3)…
… Mounting wall, (4) …… Grip wall, (P) …… Piping,
(P ') …… Bent part

Claims (2)

(57) [Claims] 1. A gripping wall having a circular cross section having a shape matching a relatively loose stepped or curved bent portion (P ') at a proper position in the longitudinal direction of a pipe (P) having a small diameter. 4) and a clamp body (1) integrally provided with a mounting wall (3) for attachment to a base body at one side wall end edge in the width direction,
An engagement fixing pipe by a clamp body, characterized in that the gripping wall portion (4) is covered and engaged in a wrapped manner over the bent portion (P '). 2. A gripping wall portion of a clamp body in which an appropriate wall in a length direction of a thin pipe which is in a straight pipe state in advance is integrally provided with a mounting wall to a base body at an end edge portion of one side wall in a width direction. By applying a press-fitting process with a pair of split dies having a groove shape of a relatively loose step or a curved shape, and applying the above-mentioned groove shape. A method for fixing an anchoring fixed pipe by a clamp body, characterized in that a simultaneous bent portion is formed, and the gripping wall portion is covered and engaged in a wrapped manner over the bent portion.