Title:
ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/217202
Kind Code:
A1
Abstract:
An electric linear actuator in which the preload force of an elastic member (45) is loaded on a friction coupling surface (47) when an outer ring member (4) is not loading an object with a forward axial direction load and in which the axial direction load loaded on the friction coupling surface (47) is reduced by the magnitude of a reverse axial direction reaction force when the outer ring member (4) is loading the object with a forward axial direction load, wherein: the actuator is provided with a load sensor (30) that supports the reverse axial direction reaction force, which the outer ring member (4) receives from the object, via planet rollers (13) and a carrier (14); and the load sensor (30) is provided so that even if the magnitude of the load acting from a retaining ring (48) in the forward axial direction changes, the detected reaction force value is not affected.
Inventors:
YAMASAKI TATSUYA (JP)
Application Number:
PCT/JP2017/019404
Publication Date:
December 21, 2017
Filing Date:
May 24, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H25/20; B60T13/74; F16D55/226; F16D65/18; F16D121/24; F16D125/06; F16D125/40; F16D125/50
Domestic Patent References:
| WO2016035610A1 | 2016-03-10 |
Foreign References:
| JP2012057681A | 2012-03-22 | |||
| JP2014016307A | 2014-01-30 | |||
| JP2016075708A | 2016-05-12 |
Other References:
See also references of EP 3473891A4
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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