In the electric power steering apparatus, a supporting mechanism for supporting
a steering assist motor on a stationary member comprises: a projection provided
at one end of a motor housing; a recess provided at the stationary member, into
which said projection is inserted; a movement permitting portion for permitting
relative movement of the projection in the recess; and a slip-off portion from
where the projection slips off said movement permitting portion. When impact energy
of a primary crash and/or a secondary crash is applied to the motor housing, support
of the motor on the stationary member is automatically released by rotating said
motor housing.
