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Patent Searching and Data


Title:
ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/080186
Kind Code:
A1
Abstract:
On the outer diameter surfaces of planetary rollers (49), circumferential grooves (52) for engaging with a helical projection (51) provided on the inner diameter surface of an outer ring member (21) are formed. By the rotation of a rotating shaft (34), the planetary rollers (49) are rotated and revolved by frictional contact with said rotating shaft (34) to move the outer ring member (21) linearly in the axial direction. Between the opposing surfaces of each planetary roller (49) and a disc (41a) provided on a carrier (40), a thrust cage roller (53), which has the end face of the planetary roller (49) as a raceway surface (49a), is inserted. Assembly of the carrier (40) is simplified by incorporating a raceway disc (57), which is common to the multiple thrust cage rollers (53), between the opposing surfaces of the multiple thrust cage rollers (53) and the disc (41a) and reducing the number of parts.

Inventors:
YAMASAKI Tatsuya (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
EGUCHI Masaaki (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
Application Number:
JP2015/080996
Publication Date:
May 26, 2016
Filing Date:
November 04, 2015
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16H25/20; F16D65/18; F16H19/02; H02K7/06
Domestic Patent References:
WO2012053469A12012-04-26
Foreign References:
JP2012149747A2012-08-09
Other References:
See also references of EP 3222881A4
Attorney, Agent or Firm:
KAMADA Naoya et al. (18-12, Nipponbashi 1-chome Chuo-ku, Osaka-sh, Osaka 73, 〒5420073, JP)
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