JPS6318872Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fixing device for fixing a metal pipe to a panel or the like.

Conventionally, in the case of a passenger car, for example, as shown in FIG. 1, U-shaped brackets B are attached to the dash panel D at both ends, and a clip C holding a fuel pipe P is bolted to the bracket B. It was something I had to stop and do.

However, cars equipped with fuel injection systems have the disadvantage that the unpleasant sound (clicking sound) during fuel injection is transmitted from the fuel hose to the fuel pipe, clip, dash panel, and floor panel, and then into the cabin. .

In order to eliminate the above-mentioned drawbacks, the applicant has proposed a system in which a cylindrical rubber body G is attached to a bracket B, and a fuel pipe P is fixed via a support S attached to this rubber body G, as shown in FIG. However, the desired effect could not be obtained sufficiently.

This is considered to be because the bracket B has a so-called double-end structure with spots attached to the dash panel D at both ends, so that the sound of the fuel pipe P is inevitably transmitted to the dash panel D.

In view of the above, the present invention was developed with the aim of providing a method that easily and inexpensively alleviates the transmission of unpleasant pulsating noise into the room during fuel injection by making the metal pipe into a soft mount. The gist is that a cylindrical rubber is protruded from the other end of a thin plate bracket with one end fixed, and the forked part of the other end of the support plate with a metal pipe attached to one end can be attached and detached into the circumferential groove formed in the rubber. A metal pipe fixing device is characterized in that it is configured to fit and fix.

This will be explained in detail based on the embodiment shown in FIG. It is shaped like an otsuji.

By fixing only one end of the bracket 1 in this way, the other end is left free to form a so-called cantilever, which can vibrate, thereby absorbing unpleasant sounds during fuel injection.

This bracket 1 needs to be made of a thin plate in order to be able to vibrate and absorb sound as mentioned above.
It was found that approximately 1.0 mm to 1.0 mm is appropriate.

If the plate thickness is too thin, problems arise in terms of the rigidity and durability of the bracket 1 itself, so it is preferable to use spring steel.

Reference numeral 3 denotes a cylindrical rubber protruding from the free end of the bracket, and a concave groove 3a is provided on the outer circumferential surface at approximately the center of the rubber.
is provided.

A sleeve 4 is inserted into the rubber 3 as a reinforcing material, and one end surface of the sleeve 4 is brought into contact with the bracket 1 and the other end surface is brought into contact with a flat washer 5, and the bolt 7 and nut 8 are tightened with a spring washer 6 interposed. It is fixed to bracket 1.

Reference numeral 9 denotes a support plate, the base end of which is fixed to the fuel pipe P, and an opening 9a is provided at the tip thereof.
The fuel pipe P is attached by sandwiching the parts.

By fixing the fuel pipe P through the rubber 3 in this way, a certain degree of vibration absorption and, by extension, sound absorption can be achieved here.

In the present invention, only one end of the thin plate bracket 1 is fixed as described above, and the bracket itself has sound absorbing properties, and a rubber 3 is further provided protruding from the other end, and a metal pipe is attached via this rubber 3. With this structure, the unpleasant noise (rattling noise) generated during fuel injection is absorbed by the synergistic effect and its transmission is prevented, so that its transmission into the room is alleviated. Further, a circumferential groove 3a is formed in the cylindrical rubber 3, and a forked portion 9a at the other end of a support plate 9 having a metal pipe attached to one end is removably fitted and fixed in the circumferential groove 3a. Therefore, the installation work is easy, and even after it has been installed, it can be easily unfixed, so it does not get in the way when other parts are installed, and work efficiency is further improved.

Moreover, the structure is relatively simple and can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a conventional example, Fig. 2 is a side view showing an improvement of Fig. 1, Figs. 3 to 6 show an embodiment of the present invention, and Fig. 3 is a front view; 4 is a side view, FIG. 5 is a sectional view taken along the line -- in FIG. 4, and FIG. 6 is an exploded perspective view. 1...Bracket, 3...Rubber, 4...Sleeve,
9... Support plate, P... Fuel pipe, D... Dash panel.

Claims (1)

[Scope of utility model registration request] A cylindrical rubber is protruded from the other end of a thin plate bracket with one end fixed, and the forked part of the other end of the support plate, which has a metal pipe attached to one end, is removably fitted into the circumferential groove formed in the rubber. A fixing device for a metal pipe, characterized in that it is configured to fix the metal pipe.