Fluid-filled type vibration damping device

A vibration isolation and fluid technology, which is applied in the direction of power plants, jet propulsion devices, internal combustion propulsion devices, etc., can solve problems such as difficult safety valve deformation, spring characteristics, reduction of fluid flow, and easy cracking, etc., to achieve improved quietness, The effect of preventing abnormal sound and preventing the generation of abnormal sound
CN102431431AActive Publication Date: 2012-05-02SUMITOMO RIKO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUMITOMO RIKO CO LTD
Publication Date
2012-05-02

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Abstract

A fluid-filled type vibration damping device including a partition member having a moveable film and a short passage interconnecting a pressure receiving chamber and an equilibrium chamber. A valve member that switches between a communicating state and a shut off state of the short passage projects from the moveable film. The valve member has a thick walled part and a thin walled part, the thin walled part being pressed on an inner wall surface of the short passage. A pressure of the pressure receiving chamber is applied through the short passage to a pressure receiving chamber side surface of the thick walled part, while an equilibrium chamber side surface thereof is supported by the partition member. The pressure of the pressure receiving chamber is applied to one side of the thin walled part and a pressure of the equilibrium chamber is applied to another side thereof through the short passage.
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Description

technical field

[0001] The present invention relates to a vibration isolator suitable for, for example, an engine mount of an automobile, and more particularly, to a fluid-enclosed type vibration isolator utilizing the flow action of a fluid enclosed inside. Background technique

[0002] Conventionally, a fluid-filled type vibration isolator is known as one type of vibration isolator applied to an engine mount, a subframe mount, and the like of an automobile. In the fluid-enclosed vibration isolation device, the first mounting member and the second mounting member are connected by a main body rubber elastic body, and a pressure receiving chamber and a balancing chamber filled with incompressible fluid are formed, and the fluid passes through the The orifice passage through which the above-mentioned pressure receiving chamber and the balance chamber communicate with each other flows, thereby exerting the intended vibration isolation effect.

[0003] However, in the fluid-fil...

Claims

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