Title:
圧力緩衝装置
Document Type and Number:
Japanese Patent JP6625000
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the stability of an opening/closing operation of a flow passage by a valve.SOLUTION: A hydraulic pressure shock absorber comprises: a valve seat 41 for forming a compression-side oil passage 412 in which oil flows accompanied by the relative movement of one side of a rod, and an elongation-side oil passage 413 in which the oil flows accompanied by the relative movement of the other side of the rod; an inside round part 415R which is formed between a first other-side oil passage port P1 of the compression-side oil passage 412 and a second other-side oil passage port P2 of the elongation-side oil passage 413 at the valve seat 41, and annularly protrudes; an outside round part 416A which is formed at the outside of a radial direction rather than the first other-side oil passage port P1 and the second other-side oil passage port P2 at the valve seat 41, and annularly protrudes; a first valve 431 for opening and closing the second other-side oil passage port P2 of the elongation-side oil passage 413; and a pressing valve 433 for pressing a first valve 431 to the valve seat 41 at the outside of the radial direction rather than the inside round part 415R being the inside of the radial direction rather than the outside round part 416R.SELECTED DRAWING: Figure 3
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Inventors:
Tetsuya Ito
Application Number:
JP2016071273A
Publication Date:
December 25, 2019
Filing Date:
March 31, 2016
Export Citation:
Assignee:
Showa Corporation
International Classes:
F16F9/348; F16F9/32; F16F9/46
Domestic Patent References:
| JP2013029133A | ||||
| JP2000009170A | ||||
| JP2013155858A | ||||
| JP37000436Y1 |
Foreign References:
| WO2013141401A1 |
Attorney, Agent or Firm:
Jiro Kobe
Fumio Ogata
Fumio Ogata