Title:
TRANSMISSION ASSEMBLY FOR LIFTING COLUMN
Document Type and Number:
WIPO Patent Application WO/2022/105856
Kind Code:
A1
Abstract:
A transmission assembly for a lifting column. The transmission assembly comprises a first-stage lead screw (1) and a second-stage lead screw (2), the first-stage lead screw (1) is nested in the second-stage lead screw (2), and the two keep rotating synchronously in the circumferential direction and sliding relatively in the axial direction; a first-stage nut (3) is provided on the first-stage lead screw (1), and a bearing (4) is connected between the second-stage lead screw (2) and the first-stage nut (3) to enable the two to be fixed relatively in the axial direction and rotate relatively in the circumferential direction; the second-stage lead screw (2) is a plastic lead screw, elastic buckles (5) are provided at the end portion of the second-stage lead screw (2), and the bearing (4) sleeves the second-stage lead screw and is axially positioned by the elastic buckles (5). By using this structure, a transmission lead screw is more convenient during machining and assembly.
Inventors:
WANG YONGCHAO (CN)
ZHANG DONGHANG (CN)
LI WEIQIANG (CN)
DING MIAOJIANG (CN)
XU XIN (CN)
ZHANG DONGHANG (CN)
LI WEIQIANG (CN)
DING MIAOJIANG (CN)
XU XIN (CN)
Application Number:
PCT/CN2021/131657
Publication Date:
May 27, 2022
Filing Date:
November 19, 2021
Export Citation:
Assignee:
ZHEJIANG JIECANG LINEAR MOTION TECH CO LTD (CN)
International Classes:
F16H25/24; F16H25/20
Foreign References:
| CN107420506A | 2017-12-01 | |||
| CN106662223A | 2017-05-10 | |||
| CN214305114U | 2021-09-28 | |||
| CN112610668A | 2021-04-06 | |||
| CN209604375U | 2019-11-08 | |||
| CN108466994A | 2018-08-31 | |||
| CN111409100A | 2020-07-14 | |||
| JP2005069430A | 2005-03-17 | |||
| EP2345817A2 | 2011-07-20 |
Attorney, Agent or Firm:
HANGZHOU HUADING INTELLECTUAL PROPERTY LAW FIRM (CN)
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