公开(公告)号：US20230193930A1

公开(公告)日：2023-06-22

申请号：US17996274

申请日：2021-04-06

Applicant: KYB Corporation

Inventor： Tomokazu NAKANO ,  Daisuke TANAKA ,  Yuuzou MASUTA

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

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

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.

公开(公告)号：US20200370550A1

公开(公告)日：2020-11-26

申请号：US16767865

申请日：2018-12-13

Applicant: KYB Corporation

Inventor： Daisuke TANAKA

IPC: F04C2/18 ,  F04C15/00

Abstract: The electric hydraulic cylinder is provided with: the electric motor; the gear pump configured to be driven by the rotation by the electric motor. The electric motor has the motor housing and the rotating shaft supported by the motor housing so as to be freely rotatable. The gear pump has: the drive gear into which the rotating shaft of the electric motor is inserted; the driven gear meshed with the drive gear; and the pump housing configured to accommodate the drive gear and the driven gear, and the motor housing is attached to the pump housing such that the gap is formed between the motor housing and the pump housing in the radial direction of the rotating shaft.

公开(公告)号：US20190234431A1

公开(公告)日：2019-08-01

申请号：US16312323

申请日：2017-06-26

Applicant: KYB Corporation

Inventor： Daisuke TANAKA

IPC: F15B11/044 ,  F15B11/08

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.