JPH053790Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a fluid-filled vibration isolator, and particularly to a fluid-filled vibration isolator equipped with a heat shielding member.

(Prior Art) A fluid-filled vibration isolator is known in which a vibration source such as an engine is attached to a stationary side to reduce the vibration.

Such a fluid-filled vibration isolator generally includes a mounting member attached to the vibration source side, a support member attached to the stationary side, an elastic body provided between the attachment member and the support member, and the elastic body. It is comprised of a fluid chamber formed therein, and a stopper that restricts displacement of the mounting member toward the support member beyond a certain level.

The stopper has a bottomed cylindrical shape with an open end, and is configured such that the open end pushes the elastic body from the outside and the displacement of the mounting member is stopped when the elastic body is displaced beyond a certain level.

(Problem to be solved by the invention) By the way, in such a fluid-filled vibration isolator,
A generally cylindrical heat shielding member surrounding the elastic body is provided to prevent heat from the engine or the like from being transmitted to the elastic member. The heat shield member is attached to the stopper, and when assembling the fluid-filled vibration isolator, both (the heat shield member and the stopper) are assembled in advance, and then this is attached to the mounting member or the support member. Therefore, it has conventionally been desired that the heat shielding member and the stopper be reliably attached to the mounting member or the support member so that the member is not detached from the mounting member or support member.

The present invention was developed in view of the conventional circumstances, and its purpose is to provide a fluid-filled vibration isolator in which a member composed of a heat shielding member and a stopper is unlikely to come off from a mounting member or a supporting member. There is something to do.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a mounting member 7 attached to the vibration source side, a support member 1 attached to the stationary side, and a combination of the mounting member 7 and the support member 1. A fluid-filled type barrier consisting of an elastic body 10 provided between, a fluid chamber S formed by the elastic body 10, and a stopper 29 that restricts displacement of the mounting member 7 toward the support member 1 beyond a certain level. In the shaking device, the stopper 29 is constituted by a bottomed cylindrical member having an opening 29a end, and the elastic body 10 is surrounded by a heat shielding member 30.
A mounting portion 30a formed in the above-mentioned shape is attached to the opening end 29a, the mounting portion is extended toward the bottom side on the inner surface of the stopper 29, and this extended portion is attached to the mounting member 7 or the support member 1. .

(Function) Since the attachment portion of the heat shield member is extended and this extended portion is attached to the attachment member or the support member, the member composed of the stopper and the heat shield member is difficult to come off from the attachment member or the support member.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

The drawing shows a longitudinal cross-sectional view of a fluid-filled vibration isolator according to the present invention, and in the drawing, 1 is a support member;
consists of a support part 3 and a cylindrical part 5, which are attached to the fixed side of the vehicle body, etc., and the cylindrical part 5 further includes a tapered part 5a.
and an annular support portion 5b.

Reference numeral 7 denotes a mounting member that is attached to a vibration source such as an engine with bolts 9, and the inner periphery of an elastic member 10 is joined to the outer periphery of the mounting member 7 by baking or the like;
The outer periphery of this elastic member 10 is baked onto the tapered portion 5a.

Embedded in the elastic member 10 is an annular ring 11 that is concentric with the mounting member 7 and has a large diameter and substantially cylindrical shape.

Inside the cylindrical part 5, there is a metal support part 12 at the center.
A diaphragm 12 is provided, and the diaphragm 12 and the elastic member 10 form a fluid chamber S. A partition member 13 is provided within the fluid chamber S, and the partition member 13 divides the fluid chamber S into a first fluid chamber S1 and a second fluid chamber S2.

The partition member 13 is made of two upper and lower metal plates 1.
6, 17, upper and lower rubber regulating members 20, 21 provided between these two plates 16, 17, and a movable plate 22 made of a flexible material provided between these regulating members 20, 21. and the partition member 1
3 is a mounting portion 16 formed on the outer periphery of the plates 16 and 17;
a, 17a are fixed by being supported by the annular support portion 5b.

The bottoms 16, 17 are approximately circular in plan view, and each plate 16, 17 has a plurality of holes 16b..., 17b.
...is formed. Moreover, the regulating members 20, 21
Holes 20a, 21a matching the holes 16b..., 17b... are formed in the holes 16b, 20a, 2.
One hole 25 is formed in each of 1a and 17b.
The movable plate 22 is arranged so as to close this hole 25.

A spiral flow path 2 is provided between the regulating members 20 and 21.
6, and this flow path 26 communicates the first fluid chamber S1 and the second fluid chamber S2 through an opening (not shown).

Among the vibrations of the vibration source, large vibrations are absorbed by flowing fluid in and out between the fluid chambers S1 and S2 via the flow path 26, while small vibrations are absorbed by the vertical vibration of the movable plate 22. be done.

On the other hand, a stopper 29 is attached to the attachment member 7 with a bolt 28. This stopper 29 has a bottomed cylindrical shape with an opening 29a at one end and a bottom surface 29b at the other end.
A flange portion 29c that spreads outward is formed in the flange portion 29c.

A heat shielding member 30 is disposed around the outer periphery of the elastic member 10 so as to surround it, and a mounting portion 30a formed at one end of the heat shielding member 30 is connected to the opening 29.
It is attached to and fixed to a. Further, an extension part 30b is formed from the attachment part 30a of this heat shielding member 30 toward the bottom surface 29b of the stopper 29, and the outer surface of this extension part 30b is baked on the inner surface of the side wall of the stopper 29, and is formed near the upper end of the extension part 30b. The groove 30c is engaged with the outer periphery of the mounting member 7.
The extension portion 30b is formed so that its inner diameter gradually decreases as it goes upward, so that it is easy to fit this portion onto the outer periphery of the mounting member 7 from above. Note that when assembling the fluid-filled vibration isolator, the stopper 29 and the heat shield member 30 are
are assembled in advance, and then a member constituted by both (the stopper 29 and the heat shield member 30) is attached to the attachment member 7.

In this embodiment, an extension part 30b is formed from the attachment part 30a of the heat shielding member 30 toward the bottom surface 29b of the stopper 29, and the outer surface of the extension part 30b is baked and fixed to the side wall of the stopper 29. Since the upper end is attached to the outer periphery of the mounting member 7, the member composed of the stopper 29 and the heat shielding member 30 is difficult to peel off from the mounting member, so that, for example, the fluid-filled vibration isolator can be carried by holding the heat shielding member 30. It also becomes possible.

(Effects of the invention) As described above, according to the invention, the mounting portion of the heat shielding member is extended and this extended portion is attached to the mounting member or the support member, so that the member is composed of the stopper and the heat shielding member. becomes difficult to detach from the mounting member or support member.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of a fluid-filled vibration isolator according to the present invention. In addition, in the drawings, 1 is a support member, 7 is a mounting member, 1
0 is an elastic body, 29 is a stopper, 29a is an opening of the stopper, and 30 is a heat shielding member.

Claims (1)

[Claims for Utility Model Registration] An attachment member attached to the vibration source side, a support member attached to the stationary side, an elastic body provided between the attachment member and the support member, and a device formed by the elastic body. A fluid-filled vibration isolator comprising a fluid chamber and a stopper that restricts displacement of the mounting member toward the support member beyond a certain level, wherein the stopper is configured with a bottomed cylindrical member having an open end; The elastic body is surrounded by a heat shielding member, a mounting portion formed on the heat shielding member is attached to the opening end, the mounting portion is extended toward the bottom side on the inner surface of the stopper, and this extended portion is attached to the mounting member or A fluid-filled vibration isolator characterized by being attached to a support member.