Title:
ELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2016/052477
Kind Code:
A1
Abstract:
Provided is an electric actuator having improved working efficiency and productivity by assembling a subassembly, which is formed by unitizing peripheral components of a ball screw mechanism and assembling this ball screw assembly into one housing, and another unitized housing. A first housing 2a and a second housing 2b are provided with a through-hole 11 and a blind hole 12 for accommodating a screw shaft 10, and a ball screw assembly formed by unitizing a ball screw mechanism 8, a pair of support bearings 20, and an output gear 6 is fitted to the second housing 2b provided with the blind hole 12. The electric actuator includes a second housing subassembly A, into which is fitted a sleeve 17 for supporting the screw shaft 10 in such a manner that it cannot be rotated but can be moved in the axial direction, and a first housing subassembly B, in which an electric motor 3 is attached to the first housing 2a having the through-hole 11. These housing subassemblies A and B are fastened together with a fixing bolt 35.
Inventors:
IKEDA YOSHINORI (JP)
KAZUNO KEISUKE (JP)
KAZUNO KEISUKE (JP)
Application Number:
PCT/JP2015/077455
Publication Date:
April 07, 2016
Filing Date:
September 29, 2015
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H25/22; F16H25/20; H02K7/06; H02K7/116
Domestic Patent References:
| WO2014148514A1 | 2014-09-25 | |||
| WO2014112602A1 | 2014-07-24 |
Foreign References:
| JP2013079700A | 2013-05-02 |
Attorney, Agent or Firm:
KOSHIKAWA, TAKAO (JP)
Takao Koshikawa (JP)
Takao Koshikawa (JP)
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