Title:
Valve structure of a buffer
Document Type and Number:
Japanese Patent JP5941359
Kind Code:
B2
Abstract:
This invention obtains damping force in choke characteristics when piston speed is in low-speed region, and reduces damping force when piston speed is in medium-high-speed region. A damping valve for a shock absorber includes a piston partitioning an extension-side chamber from a pressure-side chamber, a returner laminated to pressure-side chamber side of piston, a flow passage penetrating from piston to returner and having entrance constantly communicating with expansion-side chamber, a leaf valve laminated to retainer and operably closing an exit of expansion-side flow passage, a first outer peripheral groove formed on outer periphery of piston rod. A passage T functioning as a choke is formed between first outer peripheral groove and retainer. One side of passage communicates with flow passage and other side thereof communicates with compression-side chamber.
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Inventors:
Hideki Yamada
Application Number:
JP2012154190A
Publication Date:
June 29, 2016
Filing Date:
July 10, 2012
Export Citation:
Assignee:
KYB Corporation
International Classes:
F16F9/348; F16F9/34
Domestic Patent References:
| JP2008138696A | ||||
| JP2008309215A | ||||
| JP11182611A | ||||
| JP8261268A | ||||
| JP2003166584A | ||||
| JP5231459A | ||||
| JP2005048192A |
Attorney, Agent or Firm:
Izumi Amano
Ken Ishikawa
Ken Ishikawa