Patent ID: 9522664
Filing Date: 2016-12-20
CPC Classification: B60T

Claim Text:
1. A vehicle brake-by-wire system, comprising: an input device that comprises a master cylinder into which a brake operation given by an operator is input, and a first reservoir which reserves a brake fluid in the master cylinder; and an electric brake actuator which produces brake fluid pressure using a brake fluid reserved in a second reservoir separate from the first reservoir, based on an electric signal generated in accordance with at least the brake operation, the electric brake actuator including a substantially cylindrical main body having a hollow interior bore formed therein, an electric motor, and an actuator mechanism interconnecting the electric motor and the main body, wherein: the second reservoir has two spaced-apart attachment flanges extending downwardly thereon, each of the attachment flanges having a mounting hole formed therein, and the second reservoir is disposed above the main body of the electric brake actuator, the electric motor includes a portion which extends above the main body of the electric brake actuator adjacent to the second reservoir, the main body of the electric brake actuator includes a projecting part that projects upwardly and has two cylindrical openings formed therein and communicating with the interior bore, the projecting part also having a pin-receiving hole formed therein to receive a locking pin, the pin-receiving hole extending in a direction substantially transverse to the cylindrical openings, a pair of ring-shaped seal members are provided in the openings of the projecting portion, the electric brake actuator has a locking pin inserted in the mounting holes of the attachment flanges and also through the pin-receiving hole formed in the projecting part, the locking pin positioning the second reservoir in a position to maintain the ring-shaped seal members in a compressed state, and the second reservoir, in communication with the interior bore of the electric brake actuator main body via a reservoir port, is disposed on the main body so as to protrude toward an opposite side of the main body relative to the electric motor.