JPH0222276B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to vehicles such as automobiles, where fuel pipes, brake pipes, vacuum pipes, etc. are centrally arranged, and pipes with a diameter of about 15 m/m or less are used. The present invention relates to a method of fixing piping material having a relatively small diameter using a fixed clamp for centralized piping.

[Conventional technology]

Conventionally, as an example of a fixing method for this type of fixing clamp, as shown in FIG.
A resin clamp body 11 was assembled by artificially pressing P', and its lower surface was engaged with a mounting fitting 12.

[Problem that the invention seeks to solve]

However, in the conventional fixing clamp fixing method, a large amount of pressing force is required against the holding groove 13 when assembling each piping material P' to the clamp body 11, which makes the assembly extremely difficult. The work will be hindered, and the large pressing force will generally cause deformation of the holding groove 13, making the holding function uncertain, and there will be problems such as frequent detachment during installation and use. It was hot.

In order to extremely effectively solve the above-mentioned problems of the conventional art, the present invention specifically provides a structure in which the clamp body is made up of a pair of upper and lower divided pieces, and the clamp body is formed by grooves provided in the mating surfaces facing each other. With the piping materials arranged and engaged in the respective holding holes, the mating surfaces are welded by ultrasonic welding. Therefore, the piping materials can be easily fixed with this simple fixing clamp structure. We propose a fixing method that significantly improves workability, and at the same time, the retaining function is completely and reliably achieved by the integral wrapping shape, and there is no worry of detachment even when the product is installed and used under vibration conditions. The purpose is to

[Means to solve the problem]

In the present invention, piping materials are placed in parallel in respective holding holes in the width direction formed by semicircular grooves provided on mutually opposing mating surfaces of a resin clamp body consisting of a pair of upper and lower divided pieces. The gist of this invention is to provide a method for fixing a centralized piping fixing clamp, which is formed by aligning and engaging the mating surfaces together in a manner such that the mating surfaces are welded and connected to each other by ultrasonic welding.

Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is a plan view showing the use of a fixed clamp formed by the method of fixing a fixed clamp for centralized piping according to the present invention, Fig. 2 is an enlarged sectional view taken along the line A-A in Fig. 1, and Fig. 3. 2 is a diagram corresponding to FIG. 2 implemented on another fixing clamp, and FIG. 4 is a sectional view of the fixing method when it is set in an ultrasonic welding device. 1 is a mounting bracket 2 which is injection-molded in advance and is cast on at least one side thereof with one end protruding outward in the longitudinal direction.
A pair of upper and lower divided pieces 1', which have or do not have
It is a clamp body made of ABS resin or the like consisting of 1", and is formed by concave grooves 3' and 3" with a semicircular cross section provided on the mutually opposing mating surfaces 4. In each of the holding holes 3..., pipes with different diameters of 15 m/15 m and each having a desired bending shape are installed.
Arrange and engage piping materials P of approximately m or less in parallel,
In this state, it is set on the receiving jig 6 of the ultrasonic welding device 5, and is vibrated and pressurized from above by the tool horn 7 of the device to soften and weld the mating surfaces 4 to each other. , and is then cooled and solidified under pressure to form a bond.

It goes without saying that if the material of the clamp body 1 is appropriately selected, tubes made of resin, rubber, etc. can also be applied as the piping material P.

〔Example〕

●Clamp body...Made of ABS resin, holding hole diameter 4.76m/m and 6.35m formed by opposing grooves
Two locations were provided for each m/m.

●Piping materials: Pipe diameters of 4.76 m/m and 6.35 m/m with a corrosion-resistant plating film on the surface and the desired bent shape.
Two pieces of each metal tube material were arranged.

●Ultrasonic welding conditions…amplitude 30μm, pressure 20Kg/
cm ² for 1.5 seconds, and then cooled and solidified under pressure.

[Function] The present invention is formed by welding and joining the mating surfaces 4 of the pair of upper and lower divided pieces 1', 1'' held together in this way, so that no artificial pressure is applied during assembly. No pressure is required, and the holding function is strongly exerted, making it complete and reliable.

〔Effect of the invention〕

As explained above, the method of fixing the fixing clamp for centralized piping according to the present invention is based on the structure in which the clamp body 1 has a pair of upper and lower divided pieces 1', 1'', and the mating surfaces 4... Concave groove 3' provided in...
and each holding hole 3 formed by 3″...
The mating surfaces 4 of the divided pieces 1' and 1'' are welded and connected to each other while the piping materials P are arranged and engaged with the parts. This makes the method of fixing the material P extremely easy, eliminates the need for artificial pressing force during assembly, and significantly improves the assembly work.Furthermore, the method of fixing the material P... is made extremely easy, and the assembly work is significantly improved. This is an extremely useful method of fixing fixed clamps for centralized piping that has many effects, such as ensuring the holding function is safe and reliable, and there is no fear of disengagement even during installation and use under excitation conditions. .

[Brief explanation of drawings]

FIG. 1 is a plan view showing the state of use of a fixed clamp formed by the method of fixing a fixed clamp for centralized piping according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line A-A in FIG. 1. , Fig. 3 is a diagram equivalent to Fig. 2 implemented on another fixing clamp, Fig. 4 is a sectional view of the fixing method when it is set in an ultrasonic welding device, and Fig. 5 is a longitudinal sectional view of a conventional example. It is. 1...Resin clamp body, 1', 1''...Pair of divided pieces, 2...Mounting metal fittings, 4...Mating surface, 5...
...Ultrasonic welding equipment, P...Piping material.

Claims (1)

[Claims] 1 In each of the holding holes in the width direction formed by semicircular grooves provided on the mutually opposing mating surfaces of the resin clamp body consisting of a pair of upper and lower divided pieces,
1. A method for fixing a fixing clamp for centralized piping, comprising arranging and engaging piping materials in parallel, and then welding and bonding the mating surfaces to each other by ultrasonic welding.