Electric parking brake actuator assembly

An electric parking brake actuator assembly, comprising:

• an outer housing including an inner space in which a gear installation space and a motor installation space are respectively formed;
• an inner housing installed in the inner space of the outer housing, and including a brush card part and a gear installation part integrated together into the inner housing;
• a motor assembly coupled to the brush card part to be electrically connected thereto, and installed in the motor installation space;
• a gear assembly installed at the gear installation part and at the gear installation space, and changing and transmitting a rotational speed of the motor assembly;
• and
• a cover housing coupled to the outer housing with the inner housing interposed therebetween, and including a shaft insertion portion recessed in a surface thereof,
• wherein a partition fence is formed at the inner housing to prevent lubricating oil applied to the gear assembly from flowing into the brush card part, and
• wherein an accommodation fence is formed at the cover housing in a shape conforming to a shape of the partition fence.