JPH0213788Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fluid-filled mount that suppresses the amount of deformation of a fluid chamber under heavy loads, increases fluid pressure, and suppresses shaking of a vibration source.

A base member that is fixed to a fixed member and a mounting member that is connected to a vibration source are connected by a shear type elastic member,
Fluid-filled mounts are known in which a fluid is sealed in an internal fluid chamber.

In this type of fluid-filled mount, if the elastic member greatly expands and deforms due to fluid pressure when a large load is applied, the fluid pressure is absorbed by the deformation, causing the vibration source to shake greatly. Therefore, countermeasures against this problem are desired.

The present invention was developed in response to such demands, and its purpose is to suppress the amount of deformation of the fluid chamber by regulating the deformation of the elastic member when a large load is applied, and to increase fluid pressure without absorbing it. can be made,
Therefore, it is an object of the present invention to provide a fluid-filled mount that can increase fluid pressure in a vibration range of a predetermined amplitude or more to suppress shaking of a vibration source.

In order to achieve the above object, the present invention wraps an annular plate-shaped leaf spring with rubber to form the elastic member in an annular plate shape, and connects the mounting member and the base member to the inner and outer peripheries of the annular plate-shaped elastic member. The gist is that they are combined.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

The drawing is a central vertical cross-sectional view of the mount of the present invention, in which a base member 1 made of a highly rigid material such as metal that is fixed to a fixed member has a large diameter cylindrical part 3 set up in the center of a flat plate part 2, A flange-like thick part 4 is provided on the upper part of the cylindrical part 3, and an annular groove 5 is formed in the inner periphery of the intermediate part of the thick part 4. This thick portion 4 is composed of an upper and lower divided body.

On the other hand, the mounting member 11 connected to the vibration source is formed by forming an annular groove 13 around the intermediate portion of a disk portion 12 having a thickness substantially equal to that of the thick portion 4 and a small diameter. This disc part 1
2 is also composed of upper and lower parts.

The outer diameter is larger than the inner diameter of the cylindrical part 3 and smaller than the diameter of the annular groove 5 thereof, and is smaller than the diameter of the disc part 12 and larger than the diameter of the annular groove 13. An annular plate-shaped plate spring 21 formed on the inner diameter is wrapped with rubber to form a thick annular plate-shaped elastic member 22. The inner and outer peripheries of the intermediate portion of the elastic member 22 are formed into annular protrusions 23 and 24 that match the annular grooves 5 and 13, and the inner and outer peripheries of the leaf spring 21 are formed in the annular protrusions 23 and 24, respectively. It is extending.

In this way, the annular protrusions 23 and 24 on the inner and outer peripheries of the annular plate-shaped elastic member 22 having the leaf spring 21 as a core material are inserted into the annular grooves 13 and 5, respectively, and the thick part 4 and the disc part 12 are inserted into the annular grooves 13 and 5, respectively.
The outer periphery of the leaf spring 21 is floatingly supported in the annular grooves 13 and 5 via rubber. In addition, a fluid chamber S formed inside the mount
A liquid is sealed inside, the base member 1 is fixed to the vehicle body frame through mounting holes 6 provided on the outer periphery of the flat plate portion 2, and an engine is connected to mounting screws 14 protruding from the mounting member 11.

In this way, the mounting member 11 and the base member 1
In the vibration range less than the specified amplitude,
Due to the flexibility of the leaf spring 21, the annular plate-shaped elastic member 22 deforms up and down in response to changes in fluid pressure within the fluid chamber S to absorb the change, thereby absorbing engine vibrations.

When a large load of a predetermined amplitude or more is applied, such as when starting the engine, the outer periphery of the leaf spring 21 will move into the circular groove 1.
3 and 5, the movement of the leaf spring 21 is restricted, thereby restricting the deformation of the annular plate-shaped elastic member 22, thereby preventing absorption of liquid pressure, thereby increasing the liquid pressure. Therefore, engine shaking can be suppressed.

Furthermore, since the inner and outer peripheries of the annular plate-shaped leaf spring 21 facing inside the circular grooves 5 and 13 are wrapped with rubber, the leaf spring 21 does not come into contact with the mounting member 11 and the base member 1, and the circular protrusion made of rubber is prevented. The transmission of high frequency vibrations can be reduced by the sections 23 and 24.

As is clear from the above explanation, according to the present invention,
The mounting member and the base member are connected by an annular plate-shaped elastic member formed by wrapping an annular plate-shaped leaf spring with rubber,
Since the ceiling of the fluid chamber is formed of an annular plate-shaped elastic member having a leaf spring as a core material, when a large load of a predetermined amplitude or more is applied, the fluid pressure can be increased to suppress shaking of the vibration source.

[Brief explanation of drawings]

The drawing is a central vertical cross-sectional view of the mount of the present invention. In the drawings, 1 is a base member, 11 is a mounting member, and 2 is a base member.
1 is an annular plate-shaped leaf spring, 22 is an annular plate-shaped elastic member, and S is a fluid chamber.

Claims (1)

[Scope of utility model registration request] A mounting member connected to either the vibration source or the fixed member and a base member connected to the other and formed in a substantially cylindrical shape made of a highly rigid material are combined with an elastic member to form a fluid chamber inside. In the fluid-filled mount, the elastic member is formed into an annular plate shape by wrapping an annular plate-shaped plate spring with rubber, and an annular groove having a U-shaped cross section is formed in the mounting member and the base member, and the elastic member is formed into an annular plate shape. A fluid-filled mount characterized in that the inner and outer peripheries are floatingly supported within the annular groove via rubber.