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Patent Searching and Data


Title:
ELECTRIC POWER STEERING DEVICE
Document Type and Number:
Japanese Patent JP2010285000
Kind Code:
A
Abstract:

To provide a rack assist type electric power steering device capable of improving a degree of freedom of design of the reduction gear ratio, and capable of high output and miniaturization.

The rack assist type electric power steering device includes a reduction gear 32 arranged between an electric motor 34 and a ball screw mechanism 33 and incorporated coaxially with a rack shaft 31, the electric motor 34 the ball screw mechanism 33. The reduction gear 32 is a ball reduction gear constituted of two pairs of trochoidal waveform grooves, and incorporated into a motor housing 30B for storing the electric motor 34.


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Inventors:
Kawahara, Hiroshi
Application Number:
JP2009000138304
Publication Date:
December 24, 2010
Filing Date:
June 09, 2009
Export Citation:
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Assignee:
NSK LTD
International Classes:
B62D5/04; F16H13/08; F16H25/06; F16H25/22
Attorney, Agent or Firm:
小栗 昌平
本多 弘徳
市川 利光