JP2689267B2 - Fixing method of piping with clamp body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention generally relates to a motor vehicle or various machines, devices, and the like, and is provided with a pipe diameter and a thickness of 30 m /
The present invention relates to a method for fixing a metal pipe or a resin tube (hereinafter simply referred to as a pipe) having a relatively small diameter of about m or less by a clamp body.

[Prior Art] Conventionally, as a fixing method of this type, for example, as shown in FIG. 6, an assembling hole (12) through which a clamp member (11) is provided is provided.
In the state where the pipe (P ') penetrates the part, the metal pipe is brazed (W) over the hole periphery and fixed to each other, or the resin tube is clamped to the clip wall. And fix it (not shown).

[Problems to be Solved by the Invention] However, in such a conventional fixing method, in the former case, heating brazing by hand brilliance causes troublesome work and often causes local overheating or the like. There is a problem that productivity deteriorates remarkably due to deterioration of mechanical strength on the pipe side near the welded part, causing cracks and damages, and plating treatment such as corrosion resistance is inevitable after brazing. In the latter case, there are often problems such as axial movement or circumferential rotation on the piping side due to gripping problems, and the separation or detachment of the clip wall part under strong vibration conditions. I had one.

The present invention has been made in view of the above-described problems of the related art, and reduces the inconvenience in fixing work,
At the same time, there is no need to worry about the deterioration of mechanical strength near the fixing part, and it is possible to use clamp members and piping that have already been plated, etc., and improve productivity by eliminating these processes after fixing. In addition, it is possible to prevent axial movement on the piping side and rotation in the circumferential direction by reliable fixing, and at the same time, there is a concern that the pipe will be detached and dropped off due to the fitting of the piping through the assembly hole that is penetrating at the same time. The purpose is to propose a fixing method without any.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a mounting hole for a pipe, which has a mounting portion and which is formed through the surface of a plate-shaped clamp member which has been plated in advance. A bending wall integrally formed with at least a part of the bending wall is provided along the circumference of the hole, and the pipe extends through the bending wall and the pipe in the vicinity of the bending wall when the pipe is inserted into the mounting hole. Piping by a clamp body in which a short-sized tubular piece member having heat shrinkability is bundled and attached, and the tubular member is fixed by the heat shrinkage of the tubular member due to heating treatment. The method of fixing the same is further characterized in that a plurality of the bending walls are arranged at intervals or are projected on both sides of the clamp member, and the tubular piece member is irreversible. A shape memory alloy or heat-shrinkable resin You.

[Operation] Since the present invention is fixed by such a method,
A fixing structure can be easily fixed by heat shrinkage due to heating at a low temperature by a tubular piece member that is encased and attached to a bent wall protruding around the hole of the assembly hole and the pipe side near the bent wall. Therefore, the troublesomeness of the fixing work is reduced, at the same time the fear of deterioration of mechanical strength near the fixing part is eliminated, and it is possible to use the components that have already been plated, and after fixing By eliminating these treatments, productivity can be improved, and in order to ensure fixation, axial movement on the pipe side, rotation in the circumferential direction, separation and drop-off of the pipe at the fixed part, etc. You can get rid of your worries.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a method for fixing pipes by a clamp body according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1 with a partly cutaway, and FIG. 3 is a sectional view of another embodiment. 2 is a partial enlarged sectional view showing another embodiment of the bending wall, FIG. 5 is a drawing corresponding to FIG. 2 showing still another embodiment of the bending wall, and (1) is A plate-shaped clamp member having a mounting hole (3) to a mating base body by a bolt or the like and pre-plated, and a mounting hole (2) part of a pipe (P) penetrating the surface thereof. Along the perimeter of the hole (Fig. 3)
Alternatively, a part of the assembly (FIG. 2) or a plurality of parts (FIG. 4) at intervals are provided with protruding bending walls (4), and one of the assembly hole (2) parts Side (Fig. 2,
(FIG. 3 and FIG. 4) or both sides (FIG. 5). And piping (P) to the assembly hole (2)
Of the non-reversible shape memory alloy such as Ti-Ni or cross-linked polyolefin resin over the bent wall (4) and the pipe (P) near the bent wall in the state of being penetrated. A short piece of tubular member (5) made of a shrinkable resin is encased and applied in a lump, and in such a state, it is preferably heated by passing through a furnace at a low temperature of about 130 ° C. or less. The tubular piece member is fixed by causing heat shrinkage.

[Effects of the Invention] As described above, in the method for fixing pipes by the clamp body according to the present invention, the bending wall (4) is provided so as to project in the assembly hole (2) on the side of the clamp member (1) forming the fixed portion. Piping (P)
Since the tubular piece member (5) having a heat shrinkability is attached to the wrapping and is fixed by the heat shrinkage accompanying the heating treatment, the fixing structure can be easily fixed by the heating treatment at the low temperature. Therefore, it is possible to reduce the troublesomeness of the fixing work, at the same time there is no fear of deterioration of mechanical strength near the fixing portion, and the clamp member (1) and the pipe (which are plated with corrosion resistance etc. P) can be used to eliminate the need for these treatments after fixing, and productivity can be improved, and a reliable fixing structure due to heat shrinkage can be used in the through-hole (2). By engaging the penetrating pipe (P), it is possible to eliminate the fear of axial movement on the pipe (P) side, rotation in the circumferential direction, and detachment and dropout of the pipe at the fixed portion. This is an extremely useful method for fixing pipes with a clamp body.

[Brief description of the drawings]

FIG. 1 is a plan view of a method for fixing pipes by a clamp body according to the present invention, FIG. 2 is a sectional view taken along the line AA in FIG. 1 and a partial cutout, and FIG. 2 is equivalent to FIG. 4, FIG. 4 is a partially enlarged perspective view showing another embodiment of the bending wall, FIG. 5 is equivalent to FIG. 2 showing still another embodiment of the bending wall, and FIG. 6 is a conventional example. It is a partially cutaway longitudinal cross-sectional view by the fixing method shown. (1) ... clamp member, (2) ... assembly hole, (3)
…… Mounting hole, (4) …… Bending wall, (5) …… Cylinder piece member, (P) …… Piping

Claims (4)

(57) [Claims] 1. A pipe (P) penetrating the surface of a plate-shaped clamp member (1) having a mounting portion and pre-plated.
In the assembly hole (2) part, a bending wall (4) integrally formed at least in part is provided along the circumference of the hole so that the pipe (P) penetrates the assembly hole (2). In the attached state, the short-sized tubular piece member (5) having heat shrinkability is collectively wrapped and attached to the bent wall (4) and the pipe (P) near the bent wall. A method of fixing a pipe by a clamp body, characterized in that the pipe (P) is fixed to the clamp member (1) by heat shrinkage of the tubular member accompanying the heating treatment. 2. The method for fixing pipes by a clamp body according to claim 1, wherein a plurality of the bent walls (4) are arranged at intervals. 3. The method for fixing pipes by a clamp body according to claim 1, wherein the bent walls (4) are provided on both sides of the clamp member (1) so as to project therefrom. 4. The method for fixing pipes by a clamp body according to claim 1, wherein the tubular piece member (5) is made of an irreversible shape memory alloy or a heat-shrinkable resin.