Title:
PLANETARY ROLLER SCREW TYPE LINEAR MOTION MECHANISM AND ELECTRIC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/276770
Kind Code:
A1
Abstract:
The width dimension of a second long hole (32) is set to be larger than the width dimension of a first long hole (31). A rotation-inhibition-shape portion (46) and a first partial cylindrical surface (47) are formed on an outer periphery of a first end portion (16) of a roller shaft (15), and t first rotation-inhibition-shape portion (46) engages with a longitudinal surface (45) of the first long hole (31) so as to inhibit the roller shaft (15) from rotating. A second rotation-inhibition-shape portion (49) and a second partial cylindrical surface (50) are formed on an outer periphery of a second end portion (17) of the roller shaft (15), and only the second partial cylindrical surface (50) is brought into contact with and supported by a longitudinal surface (48) of the second long hole (32).
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Inventors:
EGUCHI MASAAKI (JP)
Application Number:
PCT/JP2022/024650
Publication Date:
January 05, 2023
Filing Date:
June 21, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16D65/18; B60T13/74; F16H19/02; F16D121/24; F16D125/40; F16D125/50
Foreign References:
| JP2016217420A | 2016-12-22 | |||
| JP2016098873A | 2016-05-30 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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