JPH01157546U

JPH01157546U -

Info

Publication number: JPH01157546U
Application number: JP5269688U
Authority: JP
Priority date: 1988-04-18
Filing date: 1988-04-18
Publication date: 1989-10-31

Description

[Brief explanation of the drawing]

第１図はブラシと案内突起の係合状態を示す断
面図。第２図はブラシ結合体がブラケツトに結合
された状態の断面図。第３図は第２図におけるブ
ラシ結合体の外観図。第４図はブラシ結合体がブ
ラケツトに結合された状態の一部断面側面図。第
５図は従来のブラケツトとハウジングの結合状態
の一部断面側面図。第６図は従来のブラケツト内
部の平面図である。６……回転軸、３２……コミユテータ、４０…
…ブラケツト、４２……挿入孔、４４……案内突
起、４６……ブラシ結合体、４８，５０……ブラ
シ、５２……弾性爪。 FIG. 1 is a sectional view showing the engaged state of the brush and the guide protrusion. FIG. 2 is a sectional view of the brush assembly coupled to the bracket. FIG. 3 is an external view of the brush assembly in FIG. 2. FIG. 4 is a partially sectional side view of the brush assembly coupled to the bracket. FIG. 5 is a partially sectional side view of a conventional bracket and housing coupled together. FIG. 6 is a plan view of the inside of a conventional bracket. 6...Rotating axis, 32...Commutator, 40...
... Bracket, 42 ... Insertion hole, 44 ... Guide projection, 46 ... Brush assembly, 48, 50 ... Brush, 52 ... Elastic claw.

Claims

[Scope of Claim for Utility Model Registration] (1) In a small motor equipped with a field magnet mounted on the inner surface of the motor housing and a brush that contacts the commutator of the rotating shaft, an insertion hole provided on the circumferential surface of the bracket; a plurality of guide protrusions that are provided on the inner surface of the shaft, are arranged in parallel with the rotating shaft, and are arranged between the insertion hole and the commutator; a brush assembly provided with a brush; when the brush assembly is inserted into the insertion hole, the brush engages with the guide protrusion and is elastically deformed outward, and is elastically connected to the commutator peripheral surface. A small motor that is characterized by being able to be contacted directly. (2) In a small motor equipped with a field magnet mounted on the inner surface of the motor housing and a brush that comes into contact with the commutator of the rotating shaft, an insertion hole provided on the circumferential surface of the bracket and a field magnet provided on the inner surface of the bracket that connects the rotating shaft. a guide protrusion arranged in parallel with the insertion hole and the commutator; and a brush assembly including a plurality of brushes that can be fitted into the insertion hole and whose tips are bent outward. and an elastic pawl provided on the inner surface of the brush assembly and capable of being elastically coupled to the guide protrusion, the brush engaging with the guide protrusion when the brush assembly is inserted into the insertion hole. 1. A small motor, characterized in that the brush assembly is elastically deformed outwardly and is capable of elastically contacting the circumferential surface of the commutator, and the brush assembly is fixed by elastic coupling between the elastic pawl and the guide protrusion.