Vibration-proofing device
AssigneeNissan Motor Co., Ltd.
InventorNaoto Fukushima
Life of this patent
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Abstract
A vibration-proofing device according to the present invention includes at least one fluid chamber in which fluid is filled between a vibrating member and a vibrated member. The fluid chamber is formed which expands and contracts from the vibration of the vibrating member. In the fluid within this fluid chamber, opposite phase pulsations are generated by means of a vibrator. The vibrator comprises an almost plate-shaped member fabricated from a magnetic material, which makes up one part of a partition forming the fluid chamber. The vibrator is activated by solenoids.
Claims6
A compact vibration-proofing device which is provided between a vibrating member and a vibrated member to prevent transmission of the vibrations of the vibrating member to the vibrated member, comprising:
- housing means defining a fluid chamber;
- an elastic member for partially defining said fluid chamber between said vibrating member and said vibrated member;
- a disk-shaped vibrator means, comprising a magnetic member, disposed in said fluid chamber for generating pulsation having opposite phase to that of pulsation produced by said vibrating member, said vibrator means adapted to cooperate with said housing means and said elastic member to divide said fluid chamber into first and second fluid chambers, and
- means for activating said vibrator means comprising a solenoid means positioned adjacent to said vibrator means along the direction of vibration of said vibrator means and a drive circuit means for applying a drive current to said solenoid means,
- wherein the ability to limit transmission of high frequency vibration is improved.
Dependencies are inferred from the claim text.