Electric steering lock device and assembling method

An electric steering lock device comprising:

• a lock body to be installed in a mounting hole part of a steering column post of a vehicle, the lock body comprising a main lock body and a lock body lid;
• a drive part which generates a rotation drive power;
• a rotation shaft to be rotated by the rotation drive power of the drive part through a gear mechanism;
• a lock stopper to be screwed with the rotation shaft to move axially by rotating of the rotation shaft;
• a lock bar which moves between a lock position for locking a steering shaft by movement of the lock stopper and an unlock position for unlocking the steering shaft;
• and
• a bush comprising a load receiving part to receive a thrust load of the rotation shaft using a mating portion at least at one end of the rotation shaft, the mating portion fitting in a hole defined by the lock body, the bush having an installation claw part and a bearing claw part, the bush fitting in the hole defined by the lock body, the bearing claw part receiving a radial load when edges of the mating portion of the rotation shaft are mated to the bearing claw part and the bearing claw part being slidably rotatable with the edges of the mating portion of the rotation shaft.