Title:
ELECTROMECHANICAL DRY-TYPE BRAKE CALIPER
Document Type and Number:
WIPO Patent Application WO/2023/169412
Kind Code:
A1
Abstract:
An electromechanical dry-type brake caliper. A planetary roller screw assembly (10) is mounted in a cylinder hole of a brake caliper assembly (11); a motor and a speed reduction mechanism are directly or indirectly connected to the planetary roller screw assembly (10); the planetary roller screw assembly (10) comprises a lead screw (1), a nut (2), and rollers (3) mounted between the lead screw (1) and the nut (2); the rollers (3) are mounted on a retainer (5) located between the lead screw (1) and the nut (2); a torsion spring (8) is mounted between the retainer (5) and the nut (2); anti-rotation bosses (4a, 4b) which are matched with each other are provided on the retainer (5) and the nut (2); one side edge of the second anti-rotation boss (4b) on the retainer (5) is attached to one side edge of the first anti-rotation boss (4a) on the nut (2) by means of the elastic force of the torsion spring (8); and the attachment position is the initial position of the rollers (3) and the retainer (5).
Inventors:
GUO FENGLIANG (CN)
ZHU YUANCHENG (CN)
YAN GUANGHUI (CN)
ZHU YUANCHENG (CN)
YAN GUANGHUI (CN)
Application Number:
PCT/CN2023/080057
Publication Date:
September 14, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
BETHEL AUTOMOTIVE SAFETY SYSTEMS CO LTD (CN)
International Classes:
F16D55/22; F16D65/095; F16D65/14; F16D121/14; F16D121/24
Foreign References:
| CN217130157U | 2022-08-05 | |||
| CN207178539U | 2018-04-03 | |||
| JP2000110907A | 2000-04-18 | |||
| JP2021049879A | 2021-04-01 | |||
| DE102019109166A1 | 2020-06-10 |
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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