JPH05296285A - Structure for installing vibrating body of vibration control device - Google Patents

Abstract

PURPOSE:To facilitate assembling of mounting bracket and prevent generation of engine noise. CONSTITUTION:Stopper rubber layers 76, 76 of predetermined thickness are integrally joined and formed on the surfaces of the outer periphery of the end portion 71 of a mounting bracket 7 which face the support leg of a vibration control device and the bottom wall of a holder, respectively. Because conventional stopper plates are removed and the stopper rubber layers 76, 77 are formed directly on the surface of the mounting bracket 7, the trouble of assembly is saved. Moreover, the weight of the mounting bracket end portion 71 is reduced, so resonance frequency is raised and generation of engine noise is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vibrating body mounting structure of a vibrating device for suspending and supporting a vibrating body such as an engine with a vibrating rubber body.

[0002]

2. Description of the Related Art In recent years, in an FF vehicle or the like, in view of a demand for increasing lateral rigidity, a cylindrical holder is provided on a vehicle frame, which is a base body, supported by supporting legs, and a vibration-proof rubber body is fitted and fixed in the holder. Then, a vibration damping device has been proposed in which the engine is suspended and supported by a connecting bolt provided on the vibration damping rubber body.

An example of this is shown in FIG. 3, which is configured as a liquid-filled type vibration damping device. In the figure, the bottomed cylindrical holder 2 that opens upward has its bottom wall supported by support legs and is fixed on a vehicle frame (not shown). An anti-vibration rubber body 3 having a cylindrical side plate 31 joined to the outer periphery is press-fitted and fixed in the holder 2, and the opening of the anti-vibration rubber body 3 in the shape of a container is closed by a partition plate 5 in which a throttle channel 51 is formed. The upper part is sealed by the thin rubber film 6, and the liquid is sealed in the sealed space.

A connecting fitting 4 is embedded in the center of the vibration-proof rubber body 3, the tip of which is projected downward from the opening of the bottom wall of the holder 2, and the mounting bracket 7 of the engine, the details of which will be described later, is attached to the bolt 41 at the end face thereof. Bound by. A stopper metal fitting 8 is fastened together with the mounting bracket 7, and the stopper metal fitting 8 is attached to the outer periphery of the mounting bracket 7 in a substantially U-shape that opens downward. On the surface of the stopper metal member 8, a stopper rubber layer 81 having a predetermined thickness is joined and formed so as to face the inner surface of the support leg 1 and the lower surface of the bottom wall of the holder 2 at a predetermined interval, and against excessive vibration input in the left-right and up-down directions. It regulates excessive deformation of the anti-vibration rubber body.

As shown in FIGS. 4 and 5, the mounting bracket 7 has a distal end portion 71 of a substantially saddle-shaped cross section provided with a through hole 75 through which the bolt 41 is inserted, which is located in the stopper fitting 8 and a base end portion 72. Is bent sideways and a pair of mounting bolts 73, 74 project from the lower surface thereof to be coupled to the engine.

[0006]

By the way, in the above-mentioned conventional vibrating body mounting structure, since the mounting bracket 7 and the stopper metal fitting 8 are separate bodies, there is a problem that it takes time to manufacture and assemble. Further, there is a problem that the weight of the tip 71 of the mounting bracket is increased by the stopper metal fitting 8 and the resonance frequency thereof is lowered, and engine noise due to the transmission thereof is generated in accordance with engine vibration in a high frequency region.

The present invention solves such a problem by providing a vibrating body mounting structure for an anti-vibration device, which can sufficiently secure the strength of the mounting bracket, can effectively prevent the generation of engine noise, and is easy to assemble. The purpose is to provide.

[0008]

To explain the structure of the present invention, a vibration-proof rubber body 3 is fixed in a bottomed cylindrical holder 2 supported on a substrate by a support leg 1, and the vibration-proof rubber body is fixed. A mounting bracket 7 provided on the vibrating body is coupled to a connecting member 4 extending from the body 3 through the bottom wall of the holder 2 and the mounting bracket 7
Stopper rubber layers 76 and 77 having a predetermined thickness are integrally formed on a surface of the outer periphery facing the support leg 1 and the bottom wall of the holder 2.

[0009]

In the above structure, the conventional stopper plate 8 is eliminated and the stopper rubber layer 7 is directly attached to the surface of the mounting bracket 7.
Since 6,77 are formed, the labor of assembling is reduced.
In addition, since the weight of the tip portion 71 of the mounting bracket is lightened, the resonance frequency is increased and engine noise is prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The overall structure of the anti-vibration device is the same as that described in the conventional example, and a mounting bracket different from the conventional one will be described below.

1 and 2, the tip portion 71 of the mounting bracket 7 has a thick saddle-shaped cross section (FIG. 1), and a bolt 41 connected to the connecting fitting 4 (see FIG. 3) at the center of the top surface thereof.
A through hole 75 for inserting the through hole is provided. The base end portion 72 of the mounting bracket 7 has a flat plate shape and is curved and protrudes to the side.
74 is projected downward.

Then, both side surfaces of the outer periphery of the tip portion 71,
The stopper rubber layers 76 and 77 each having a predetermined thickness are formed so as to be bonded to cover both side edges and the lower end surface of the following top surface, and these stopper rubber layers 76 and 77 are formed on the support leg 1 (see FIG. 3).
(See) and the bottom surface of the bottom wall of the holder 2 at a distance.

According to this structure, since the stopper plate 8 (see FIG. 3) as in the prior art is unnecessary, the number of parts is reduced and the assembling work is reduced.

Also, since the stopper plate 8 is not provided, the tip portion 71 of the mounting bracket is made lighter in weight, the resonance frequency thereof rises and deviates from the engine vibration in the high frequency region, and its transmission is reduced, so that engine noise is prevented. To be done.

In order to manufacture such a mounting bracket, press molding, mold molding or the like is appropriately selected from the viewpoints of cost and moldability. In particular, if the mounting bracket 7 is made of an aluminum material, a significant weight reduction can be realized, which is further advantageous in preventing engine noise.

[0016]

As described above, according to the vibrating body connecting structure of the present invention, it is possible to reduce the labor for assembling and also to reduce the engine noise.

[Brief description of drawings]

FIG. 1 is a front view of a mounting bracket.

FIG. 2 is a side view of a mounting bracket.

FIG. 3 is an overall cross-sectional view of a vibration isolator having a conventional mounting structure.

FIG. 4 is a front view of a conventional mounting bracket.

FIG. 5 is a side view of a conventional mounting bracket.

[Explanation of symbols]

 1 Support leg 2 Holder 3 Anti-vibration rubber body 4 Connecting metal fitting (connecting member) 7 Mounting bracket 76, 77 Stopper rubber layer

Claims (1)

[Claims] 1. A vibrating body is fixed to a bottomed cylindrical holder supported on a base by support legs, and a connecting member extending from the vibration isolating rubber body through a bottom wall of the holder. And a stopper rubber layer having a predetermined thickness integrally formed on the surface of the outer periphery of the mounting bracket facing the support leg and the holder bottom wall. Mounting structure.