Patent ID: 8373327
Filing Date: 2013-02-12
Classification: B25F,H02K

Abstract:
1. An attachment structure for a motor assembly comprising: a tubular housing; a motor assembly including a commutator motor and a brush holder unit configured to hold brushes being slidable in contact with a commutator of the commutator motor; an accommodating portion with a bottom, formed in the housing and configured to accommodate therein the motor assembly with the brush holder unit facing downward; a receiving portion formed in the accommodating portion and configured to position the brush holder unit when it comes into contact with the brush holder unit; an abutment portion at least formed on one of a stator of the commutator motor and the brush holder unit, and configured to come into contact with the corresponding brush holder unit or stator adjacent thereto during assembly so that positioning is made between the stator and the brush holder unit; and a fixing member configured to be inserted from an open side of the housing, brought into contact with the stator, and fixed to the housing, wherein the motor assembly is positioned within the accommodating portion such that the brush holder unit is in contact with the receiving portion and that the stator and the brush holder unit are brought into contact with each other through the abutment portion, and wherein by using the fixing member, the motor assembly is interposed and fixed between the fixing member and an inner surface of the receiving portion.