Patent ID: 9663089
Date: 2017-05-30
CPC Classifications: B60T,F16D

Claim:
1. A vehicle electric braking device configured to press a friction member via an electric motor against a rotation member fixed to a wheel of a vehicle, to thereby generate a braking torque for the wheel, the vehicle electric braking device comprising: a mount member fixed to a support member configured to support the wheel; a first guide member fixed to the mount member, and having an axis; a second guide member fixed to the mount member at a position different from a position of the first guide member, and having an axis parallel to the axis of the first guide member; a caliper supported by the first guide member and the second guide member, the caliper being movable relative to the first guide member and the second guide member in an axial direction of the first guide member and the second guide member; a first fastening member configured to fix the mount member to the support member, and having an axis parallel to the axis of the first guide member; a second fastening member configured to fix the mount member to the support member at a position different from a position of the first fastening member, and having an axis parallel to the axis of the first guide member; a shaft member to be rotationally driven by the electric motor about a shaft axis different from a motor axis that is a rotation axis of the electric motor; and a conversion member configured to convert a rotational motion of the shaft member about the shaft axis into a translational motion of the friction member with respect to the rotation member, wherein the electric motor is fixed to the caliper, wherein, when viewed from the axial direction of the first guide member, the motor axis is positioned inside a fastening quadrangle, which is a quadrangle having a plane that has four corners corresponding to respective positions of the axis of the first guide member, the axis of the second guide member, the axis of the first fastening member, and the axis of the second fastening member, the plane being perpendicular to the axis of the first guide member, the motor axis being orthogonal to the plane of the fastening quadrangle, wherein the motor axis is closer than the shaft axis to a rotation axis of the rotation member, and wherein the braking torque is generated based on an operation amount of a brake pedal.