Title:
NITROGEN SPRING
Document Type and Number:
WIPO Patent Application WO/2022/222418
Kind Code:
A1
Abstract:
A nitrogen spring, comprising a cylinder body (1), a piston rod (2) and a bushing (3). The cylinder body (1) is provided with a stepped through-hole (11); and the cylinder body (1) is provided with an overpressure protection structure (4) which corresponds to the stepped through-hole (11). The overpressure protection structure (4) comprises a protective sheet (41) covering the stepped through-hole (11), a sealing ring (42) provided between the stepped through-hole (11) and the protective sheet (41), and a detachable plug (43) which is detachably connected to the cylinder body (1) and restrains the protective sheet (41) from disengaging from the stepped through-hole (11). In addition, a vent hole (431) is provided on the detachable plug (43).
Inventors:
LV FENG (CN)
LI QIANCHANG (CN)
ZHU KAI (CN)
XU HAO (CN)
LI QIANCHANG (CN)
ZHU KAI (CN)
XU HAO (CN)
Application Number:
PCT/CN2021/128325
Publication Date:
October 27, 2022
Filing Date:
November 03, 2021
Export Citation:
Assignee:
JIAXING NYC IND CO LTD (CN)
International Classes:
F16F9/02; F16F9/32; F16F9/34; F16F9/36; F16F9/38
Foreign References:
| CN113090696A | 2021-07-09 | |||
| CN107504119A | 2017-12-22 | |||
| US20200300329A1 | 2020-09-24 | |||
| CN209762107U | 2019-12-10 | |||
| CN108397502A | 2018-08-14 | |||
| CN109869432A | 2019-06-11 | |||
| CN208457091U | 2019-02-01 | |||
| CN203463538U | 2014-03-05 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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