Title:
FLUID PRESSURE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138611
Kind Code:
A1
Abstract:
This fluid pressure control device (100) is provided with a neutral passage (13), a control valve (20) provided in the neutral passage (13), a supply passage (14), and a discharge passage (15). The control valve (20) comprises: a switching valve (40) which controls the flow of hydraulic oil from a rod-side chamber (6b) of a tilt cylinder (5) to the discharge passage (15) depending on the pressure in a pilot chamber (41), to which part of the hydraulic oil is guided that is supplied from the supply passage (14) to a rod-opposite chamber (6a) of the tilt cylinder; and a throttle part (23a) which throttles flow of the hydraulic oil supplied from the supply passage (14) to the rod-opposite chamber (6a) of the tilt cylinder (5), wherein pressure upstream of the throttle part (23a) is guided to the pilot chamber (41).
Inventors:
KOJIMA MASANARI (JP)
NAKAMURA MASAYUKI (JP)
TERAO TAKESHI (JP)
NAKAMURA MASAYUKI (JP)
TERAO TAKESHI (JP)
Application Number:
PCT/JP2018/036403
Publication Date:
July 18, 2019
Filing Date:
September 28, 2018
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
B66F9/22; F15B11/044; F15B11/042; F16K11/07
Foreign References:
| JPS525310Y1 | 1977-02-03 | |||
| JPH06137304A | 1994-05-17 | |||
| JPH10184603A | 1998-07-14 | |||
| JPS6096397U | 1985-07-01 | |||
| JPS58177661U | 1983-11-28 | |||
| JPS60191706U | 1985-12-19 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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