Electric booster

摘要

An object of the present invention is to provide an electric booster enabling an easy connection of an ECU and a stator. An ECU casing containing boards and (ECU) is attached to the outer surface of the casing body so as to be located near a stator of an electric motor. The opening of the casing body is closed by a rear cover. A flat-portion through-hole (through-hole) is formed through the casing body. Bus bars connecting the stator and the ECU are disposed through the flat-portion through-hole. The bus bars are disposed such that one ends thereof are coupled with the stator while the other ends thereof protrude from the flat-portion through-hole. When the electric booster is assembled, since the stator and the bus bars are disposed at the casing body having the flat-portion through-hole, it is possible to easily assemble the casing body and the rear cover with the bus bars inserted through the flat-portion through-hole.

主权项

1. An electric booster, comprising:
an ECU; an electric motor adapted to rotate in response to an instruction from the ECU; a rotation-linear motion converting mechanism operable to convert a rotation of the electric motor into a linear motion; an output member operable to transmit the converted linear motion; and a master cylinder operable to generate a brake fluid pressure by a piston advanced by the output member; wherein the electric motor includes a cylindrical first housing having an opening on at least one side thereof, and a second housing covering the opening; an annular stator is contained in the first housing; an ECU casing containing the ECU is attached to the outer surface of the first housing so as to be situated near the stator; a through-hole is formed at an axially intermediate position of the first housing where the ECU casing is attached; and the stator and the ECU are connected through a predetermined-shaped conductor extending through the through-hole.