Title:
HUB UNIT HAVING STEERING FUNCTION AND VEHICLE PROVIDED WITH HUB UNIT
Document Type and Number:
WIPO Patent Application WO/2020/129988
Kind Code:
A8
Abstract:
A hub unit (1) having a steering function according to the present invention comprises: a hub unit body (2); a unit support member (3) that is provided on a knuckle (6) to rotatably support the hub unit body (2) around a steering axis (A) extending in a vertical direction; and a steering actuator (5) that rotates the hub unit body (2) around the steering axis (A). The steering actuator (5) has a motor (26) and a linear motion mechanism (25) that converts a rotation output of the motor (26) into a linear motion, the linear motion mechanism (25) has a sliding screw-type feeding screw mechanism (33) including a nut part (36) and a screw shaft (36), and a surface hardening treated layer is provided on at least a screw surface of one or both of the nut part (35) and the screw shaft (36).
Inventors:
OOBA HIROKAZU (JP)
UTSUNOMIYA SATOSHI (JP)
OHATA YUSUKE (JP)
UTSUNOMIYA SATOSHI (JP)
OHATA YUSUKE (JP)
Application Number:
PCT/JP2019/049444
Publication Date:
June 10, 2021
Filing Date:
December 17, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H25/20; B62D5/04; B62D7/09; B62D7/18; F16H25/24
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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