Brake apparatus
AssigneeHitachi Automotive Systems, Ltd.
InventorsChiharu Nakazawa, Ryohei Maruo
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide a brake apparatus that allows low-cost attachment of a stroke sensor that detects a stroke amount of a brake pedal. The brake apparatus is configured in such a manner that the stroke sensor that detects an amount of an axial stroke of a piston is disposed between one side surface of a master cylinder housing and one side surface of a valve housing, and an output of the stroke sensor is transmitted via a through-hole formed on the valve housing when being transmitted to a control unit attached to an opposite side surface-side of the valve housing.
Claims20
A brake apparatus comprising:
- a master cylinder housing including a piston configured to carry out an axial stroke in a cylinder formed therein via a rod operable according to an operation performed by a driver on a brake pedal;
- a valve housing including an oil passage through which brake fluid flows after flowing out from inside the cylinder according to the stroke of the piston, and an electromagnetic valve configured to block and open the oil passage, the master cylinder housing being attached to one side surface-side of the valve housing;
- a stroke sensor disposed between one side surface of the master cylinder housing and one side surface of the valve housing, and configured to detect an amount of the axial stroke of the piston;
- a control unit attached to an opposite side surface-side of the valve housing, and configured to drive the electromagnetic valve and receive an output of the stroke sensor;
- and
- a through-hole provided on the valve housing and formed to allow a signal line to pass through the through-hole, the signal line being configured to transmit the output of the stroke sensor to the control unit.
A brake apparatus comprising:
- a master cylinder housing including a cylinder portion therein, and including a piston configured to carry out an axial stroke in the cylinder portion via a rod operable according to an operation performed by a driver on a brake pedal;
- a valve housing including an oil passage through which brake fluid flows after flowing out from inside the cylinder portion according to the stroke of the piston, and an electromagnetic valve configured to block and open the oil passage, the master cylinder housing being attached to one side surface-side of the valve housing;
- a stroke sensor disposed between the master cylinder housing and one side surface of the valve housing, and configured to detect an amount of the axial stroke of the piston;
- a control unit attached to an opposite side surface-side of the valve housing, and configured to drive the electromagnetic valve and receive an output of the stroke sensor;
- and
- a through-hole provided on the valve housing, the through-hole being formed in such a manner that a connection member for electrically connecting the stroke sensor and the control unit to each other is disposed therein.
A brake apparatus comprising:
- a master cylinder housing including a piston configured to carry out a stroke via a rod axially operable according to an operation performed by a driver on a brake pedal;
- a stroke sensor attached to the master cylinder housing and configured to detect an amount of the axial stroke of the piston;
- a valve housing including an oil passage through which brake fluid flows, and an electromagnetic valve configured to block and open the oil passage;
- and
- a control unit configured to drive the electromagnetic valve and receive an output of the stroke sensor,
- wherein the master cylinder housing is attached to one side surface-side of the valve housing, and the control unit is attached to an opposite side surface-side of the valve housing, and
- wherein the stroke sensor and the control unit are electrically connected to each other via a bus bar with the valve housing interposed therebetween.
Dependencies are inferred from the claim text.