Electromagnetic shock absorber
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United States of America Patent
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-
Apr 15, 2008
Grant Date -
Sep 29, 2005
app pub date -
May 28, 2003
filing date -
May 29, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromagnetic shock absorber according to the present invention has a shock absorber body 1 which makes telescopic motion in response to an input from outside. The shock absorber body 1 comprises a ball screw mechanism 15, which converts the telescopic motion into rotary motion and is composed of a ball nut 16 and a screw shaft 17, and power transmitting sections 13 and 24 having elastic bodies which transmit the rotary motion of the ball screw mechanism 15 to a rotary shaft 11 of a motor 10 while shifting a transmission phase when transmission torque of the rotary motion is changed. The motor 10 generates electromagnetic resistance to oppose against rotations which input into the rotary shaft 11. Thus, vibration or the like which inputs into the shock absorber body 1 from outside is damped by the electromagnetic resistance of the motor 10. Due to the power transmitting sections 13 and 24 which delay a rotary phase, moment of inertia of a rotor of the motor 10 is eased when a shocking load inputs into the shock absorber body 1. Therefore, it is possible to make a vehicle more comfortable to drive when the electromagnetic shock absorber is applied as a shock absorber of the vehicle.
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