Title:
GAS SPRING WITH EXTERNAL DRIVING FORCE
Document Type and Number:
WIPO Patent Application WO/2021/008585
Kind Code:
A1
Abstract:
A gas spring with external driving force, mainly comprising a cylinder body (1), a piston (2), a piston rod (3), a stop valve (4), and a power cylinder or tank (5), wherein the piston (2) is mounted in the cylinder body (1); one end of the piston rod (3) is connected to the piston, and the other end extends out of the cylinder body (1); the stop valve (4) used for connecting a rod cavity and a rodless cavity in the cylinder body is mounted at a joint of the piston rod (3) and the piston (2); a cavity for mounting an operating rod (6) is provided in the piston rod (3); one end of the operating rod (6) is connected to the stop valve (4), and the other end extends out of the piston rod (3) and is provided with a valve button (7); a power piston (8) is mounted in the power cylinder or tank (5) and divides the interior of the power cylinder or tank into a storage cavity (9) and a medium compressible power cavity (10); the storage cavity (9) is communicated with the cavity in the piston rod (3) by means of a pipeline; and a communicating hole (11) communicated with the rod cavity of the cylinder body is provided at an end, located on the cylinder body (1), of the cavity. The gas spring is simple in structure and labor-saving in retraction.
Inventors:
QIAO BIN (CN)
Application Number:
PCT/CN2020/102385
Publication Date:
January 21, 2021
Filing Date:
July 16, 2020
Export Citation:
Assignee:
QIAO BIN (CN)
International Classes:
A47C3/30; A47B9/10; F15B15/00; F16F9/02; F16F9/06
Foreign References:
| CN110273957A | 2019-09-24 | |||
| CN210318301U | 2020-04-14 | |||
| DE3446408A1 | 1986-07-10 | |||
| CN107314074A | 2017-11-03 | |||
| CN106073259A | 2016-11-09 | |||
| CN109798276A | 2019-05-24 | |||
| CN201388758Y | 2010-01-27 | |||
| US20180274621A1 | 2018-09-27 |
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. (CN)
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