公开(公告)号：US10794404B2

公开(公告)日：2020-10-06

申请号：US16312323

申请日：2017-06-26

Applicant: KYB Corporation

Inventor： Daisuke Tanaka

IPC: F15B11/044 ,  F15B11/08 ,  F15B11/042 ,  F15B7/00 ,  F15B15/04 ,  F15B15/18

Abstract: A cylinder driving device includes: an electric motor; a pump; a main passage and a main passage; a hydraulic cylinder; an operation check valve and an operation check valve; and a restriction valve and a restriction valve configured to restrict a flow of the working oil directed to the operation check valve and an operation check valve, wherein an opening area of the restriction valve and the restriction valve is reduced in response to an increase in a flow rate of the working oil discharged from the hydraulic cylinder to the main passage and a main passage.

公开(公告)号：US11560891B2

公开(公告)日：2023-01-24

申请号：US16767865

申请日：2018-12-13

Applicant: KYB Corporation

Inventor： Daisuke Tanaka

IPC: F04C2/18 ,  F04C15/00 ,  F04C2/14

Abstract: An electric hydraulic actuator is provided with an electric motor and a gear pump driven in rotation by the electric motor. The electric motor includes a motor housing and a rotating shaft supported by the motor housing so as to be freely rotatable. The gear pump has a drive gear into which the rotating shaft of the electric motor is inserted and a driven gear meshed with the drive gear. A pump housing is configured to accommodate the drive gear and the driven gear on one end and has an installation concave portion open at the other end for accommodating part of the motor housing. The motor housing is attached to the pump housing with a gap formed between the motor housing and the pump housing in a radial direction of the rotating shaft. The gap includes an O-ring to elastically support the motor housing in the radial direction.

公开(公告)号：US12098734B2

公开(公告)日：2024-09-24

申请号：US17996274

申请日：2021-04-06

Applicant: KYB Corporation

Inventor： Tomokazu Nakano ,  Daisuke Tanaka ,  Yuuzou Masuta

IPC: F15B11/10 ,  F04B17/03 ,  F15B13/00 ,  F15B15/14

CPC classification number: F15B11/10 ,  F04B17/03 ,  F15B13/00 ,  F15B15/14

Abstract: An electric fluid pressure cylinder is provided with: a driving unit integrally provided with an electric motor, a pump configured to discharge working oil by being driven by the electric motor, and a tank; a hydraulic cylinder configured to be extended and contracted by the working oil supplied from the driving unit; and a first hose pipe and a second hose pipe configured to guide the working oil between the driving unit and the hydraulic cylinder. The driving unit is further provided with: a valve block configured to control the flow of working fluid between the fluid pressure cylinder and the pump; and a connecting plate attached to the valve block and formed with a connecting port to which the pipe member is connected, the connecting port being configured such that the working fluid supplied to and discharged from the fluid pressure cylinder passes through the connecting port.