Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/070205
Kind Code:
A1
Abstract:
This cylinder device (A) comprises: a cylinder (2); a piston (3) that partitions the inside of the cylinder (2) into two working chambers (R1, R2); a first flow path (4) and a second flow path (5) that connect the working chambers (R1, R2) in parallel; a first variable throttle valve (6) provided in the first flow path (4); a hydraulic cylinder (1) having a second variable throttle valve (7) provided in series in the second flow path (5) and a bidirectional discharge type pump (9) driven by a motor (8); and a controller (11) that controls the first variable throttle valve (6), the second variable throttle valve (7), and the motor (8). The controller (11) determines a target aperture coefficient of the second variable throttle valve (7) at which the operating point of the motor (8) is placed on a straight line of maximum regeneration efficiency on the basis of the rotation speed of the motor (8) and the thrust of the hydraulic cylinder (1), and the controller controls the second variable throttle valve (7).
Inventors:
SUGAWARA HIROMICHI (JP)
KUBO YAMATO (JP)
KUBO YAMATO (JP)
Application Number:
PCT/JP2023/028211
Publication Date:
April 04, 2024
Filing Date:
August 02, 2023
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
B60G17/015; F15B21/14
Foreign References:
| JP2009196597A | 2009-09-03 | |||
| JP2007083813A | 2007-04-05 | |||
| JP2003104025A | 2003-04-09 | |||
| US20200324610A1 | 2020-10-15 |
Attorney, Agent or Firm:
ISHIKAWA Ken (JP)
Download PDF:
Previous Patent: VIRTUAL IMAGE DISPLAY DEVICE, MOVABLE BODY, VIRTUAL IMAGE DISPLAY DEVICE DRIVING METHOD, AND PROGRAM
Next Patent: ANALYZING DEVICE
Next Patent: ANALYZING DEVICE