초록 ▼

An end cap for small electric motors using brushes, the end cap being molded of a synthetic plastic dielectric material. Brush-receiving guides are defined on the end cap by homogeneous cantilevered fingers which are deflectable to grip the brush therein during assembly of the end cap to a motor cas

An end cap for small electric motors using brushes, the end cap being molded of a synthetic plastic dielectric material. Brush-receiving guides are defined on the end cap by homogeneous cantilevered fingers which are deflectable to grip the brush therein during assembly of the end cap to a motor casing. Electric conductor and connector retainers are homogeneously defined on the end cap to provide conductor strain relief, a circuit breaker retainer is homogeneously included in the cap configuration, and tie bolt ears are of such configuration as to cooperate with the motor casing to resist deflection.

대표청구항 ▼

In an electric motor having a tubular casing having ends wherein an armature is rotatably supported within the casing upon end caps mounted upon the casing ends, the improvement comprising, at least one of the end caps being molded of a synthetic plastic dielectric material, an inner surface defined

In an electric motor having a tubular casing having ends wherein an armature is rotatably supported within the casing upon end caps mounted upon the casing ends, the improvement comprising, at least one of the end caps being molded of a synthetic plastic dielectric material, an inner surface defined on said one end cap, armature bearing means defined on said end cap defining a bearing axis, a plurality of brush-holding means defined upon said end cap inner surface about said axis, said brush-holding means including a pair of spaced parallel cantilevered fingers homogeneously formed of the material of the end cap having a length extending substantially parallel to said bearing axis, each finger having an outer free end, an inner lateral edge disposed toward said bearing axis, an outer lateral edge remote from said bearing axis, and an inner side, said inner sides of said pair of fingers being in spaced opposed relation to each, other, an elongated recess defined in each of said fingers\inner sides having a length projecting toward said bearing axis, the recesses of a pair of fingers being in opposed relation and defining a brush-receiving guide, said fingers\outer free ends being in spaced relation to each other and adapted to be deformable whereby temporary deformation of said fingers toward each other will frictionally grip a brush within said guide to prevent brush movement therein, and a spring anchor projection homogeneously formed of the material of said one end cap adjacent and spaced from said outer lateral edges of a spaced pair of said fingers, said spring anchor projection being in alignment with said brush-receiving guide defined in said spaced pair of fingers.