Title:
RAISING COLUMN
Document Type and Number:
WIPO Patent Application WO/2021/110003
Kind Code:
A1
Abstract:
A raising column, comprising a driving apparatus (100), a raising tube (200) and a transmission assembly. The lifting tube (200) comprises a first tube (210), a second tube (220), a third tube (230), and a fourth tube (240), a lower end of the fourth tube (240) being fixed on the driving apparatus (100). The transmission assembly comprises, sleeved sequentially from inside to outside, a first ball screw (310), a hollow second ball screw (320), and a hollow third ball screw (330). An output end of the driving apparatus (100) cooperates transmissively with the first ball screw (310) and is able to drive the first ball screw (310) to rotate. A first nut (321) transmissively connected to the screw thread of the first ball screw (310) is provided on a lower end of the second ball screw (320), a second nut (331) transmissively connected to the screw thread of the second ball screw (320) is provided on a lower end of the third ball screw (330), and a third nut (211) transmissively connected to the screw thread of the third ball screw (330) is provided on a lower end of the first tube (210). Adjacent ball screws are transmissively connected by means of the screw threads, and the nuts are positioned between two adjacent ball screws, and there is no need to additionally provide an apparatus for fixing the nut, causing the transmission assembly to be more compact in both the axial and radial directions, and further reducing mounting distance in the raising column, thus allowing for low mounting distances and a large distance of travel in the raising column.
Inventors:
HU RENCHANG (CN)
LU XIAOJIAN (CN)
PAN JIAN (CN)
LU XIAOJIAN (CN)
PAN JIAN (CN)
Application Number:
PCT/CN2020/133178
Publication Date:
June 10, 2021
Filing Date:
December 01, 2020
Export Citation:
Assignee:
ZHEJIANG JIECANG LINEAR MOTION TECH CO LTD (CN)
International Classes:
B66F7/14; B66F7/28; F16H25/24; F16H57/04
Foreign References:
| CN110980585A | 2020-04-10 | |||
| CN211712529U | 2020-10-20 | |||
| CN109812556A | 2019-05-28 | |||
| CN208457140U | 2019-02-01 | |||
| CN209621790U | 2019-11-12 | |||
| CN206142727U | 2017-05-03 | |||
| US20180172062A1 | 2018-06-21 |
Attorney, Agent or Firm:
HANGZHOU HUADING INTELLECTUAL PROPERTY LAW FIRM (CN)
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