Patent ID: 8881563

Claim:
An electric steering wheel lock device for installation to a steering shaft, the electric steering wheel lock device comprising: a lock bar movable between a lock position, at which the lock bar prohibits rotation of the steering shaft, and an unlock position, at which the lock bar permits rotation of the steering shaft; an electric motor adapted to generate a drive force for moving the lock bar; and a motor holding member which holds the electric motor, wherein the motor holding member includes: a holding recess configured to hold a casing of the electric motor, two casing clamping tabs extending in parallel to each other from the holding recess, and two contact portions projecting toward each other from the two casing clamping tabs to clamp two opposite side surfaces of the casing of the electric motor, wherein each of the contact portions includes a tetragonal upper surface and a trapezoidal cross-section, wherein the tetragonal upper surface of each contact portion is inclined relative to the corresponding one of the two opposite side surfaces of the casing of the electric motor so that one of four sides of the tetragonal upper surface of each of the two contact portions comes into linear contact with the casing along a rotation shaft direction of the electric motor.