| 摘要 |
A noise reduction device of a motor driven power steering system may include a worm gear shaft, one end of which is connected with a tilt bearing that is coupled to a housing and rotatably supports the worm gear shaft, a driving shaft connected to a motor, a power transmission member integrally fitted with the driving shaft of the motor, a coupling connected to one end of the driving shaft of the motor and integrally coupling the driving shaft of the motor to the worm gear shaft to be rotatable therebetween, wherein the coupling includes a coupling body, and an elastic cushion member formed on one or both lateral surfaces of the coupling to buffer vibration and/or noise.
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