Title:
SEAT HEIGHT CONTROL VALVE AND AUTOMOBILE SEAT
Document Type and Number:
WIPO Patent Application WO/2022/052403
Kind Code:
A1
Abstract:
Disclosed is a seat height control valve, comprising a valve body (7) and a valve rod (4); a valve chamber is provided in the valve body (7), the valve rod (4) can axially reciprocally move in the valve chamber, and three sealing rings are provided on an inner wall of the valve chamber; a first air flow chamber and a second air flow chamber are spaced apart in the valve chamber, and three air passage interfaces are provided on the valve body (7) to communicate with the first air flow chamber, the second air flow chamber and the outside; and a recess (4-1) is provided on an outer wall of the valve rod (4), and, when the valve rod (4) is inserted into the valve chamber at different depths, the recess (4-1) communicates with the first air flow chamber and the second air flow chamber and with the second air flow chamber and the outside, respectively. Also disclosed is an automobile seat using the described seat height adjustment valve.
Inventors:
SUN GUO (CN)
ZHANG XIAOFENG (CN)
ZHANG XIAOFENG (CN)
Application Number:
PCT/CN2021/073252
Publication Date:
March 17, 2022
Filing Date:
January 22, 2021
Export Citation:
Assignee:
HEBEI GOLDRARE AUTOMOBILE PARTS CO LTD (CN)
International Classes:
F16K24/04
Foreign References:
| CN1718473A | 2006-01-11 | |||
| CN110588458A | 2019-12-20 | |||
| CN101850732A | 2010-10-06 | |||
| EP3254886B1 | 2019-03-13 |
Attorney, Agent or Firm:
HYLANDS LAW FIRM (CN)
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