Title:
油圧装置
Document Type and Number:
Japanese Patent JP7371189
Kind Code:
B2
Abstract:
To disclose one example of a hydraulic device capable of suppressing occurrence of a returning operation failure.SOLUTION: A pilot chamber 35 and an intermediate chamber 33 communicate with each other via a pilot flow passage 35A. Thus, a part of hydraulic oil flowing into the intermediate chamber 33 flows through the pilot flow passage 35A into the pilot chamber 35 during basic operation. At such the time, a first valve part 5A is displaced to a right side of paper, thereby reducing a first opening area. Quantity of the hydraulic oil to be supplied from the intermediate chamber 33 to the pilot chamber 35 is decreased as a pressure difference between the intermediate chamber 33 and the pilot chamber 35 becomes smaller. During the basic operation, a pressure (static pressure) in the intermediate chamber 33 is reduced as the first opening area becomes smaller. Thus, the first valve part 5A is made hard to be displaced, thereby suppressing occurrence of a returning operation failure.SELECTED DRAWING: Figure 1
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Inventors:
Fuminori Inaishi
Naoki Ichikawa
Kazuya Yoshimoto
Takayuki Suzuki
Yuki Sato
Haruhiko Kurino
Ryusuke Fukuda
Yuki Yaguchi
Naoki Ichikawa
Kazuya Yoshimoto
Takayuki Suzuki
Yuki Sato
Haruhiko Kurino
Ryusuke Fukuda
Yuki Yaguchi
Application Number:
JP2022142565A
Publication Date:
October 30, 2023
Filing Date:
September 07, 2022
Export Citation:
Assignee:
JTEKT Fluid Power System Co., Ltd.
Senxia Co., Ltd.
Kashima Construction Co., Ltd.
Senxia Co., Ltd.
Kashima Construction Co., Ltd.
International Classes:
F16F9/34; E04H9/02; F16F9/508; F16F15/023
Domestic Patent References:
| JP1114408U | ||||
| JP7186678A |
Attorney, Agent or Firm:
Nagoya International Patent Attorney Corporation
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