JPH0288444U

JPH0288444U -

Info

Publication number: JPH0288444U
Application number: JP16750688U
Authority: JP
Priority date: 1988-12-23
Filing date: 1988-12-23
Publication date: 1990-07-12

Description

[Brief explanation of drawings]

第１図は本考案の一実施例のモータ断面図、第
２図は第１図のベアリングナツト部の詳細拡大図
、第３図、第４図は従来例のモータ断面図である
。１……軸、２，３……ボールベアリング、３ａ
……内輪、３ｂ……外輪、６……ベアリング押え
板、１０……ベアリングナツト、１０ａ……くぼ
み、１１……波形ワツシヤ。 FIG. 1 is a sectional view of a motor according to an embodiment of the present invention, FIG. 2 is a detailed enlarged view of the bearing nut portion of FIG. 1, and FIGS. 3 and 4 are sectional views of a conventional motor. 1...Shaft, 2, 3...Ball bearing, 3a
...Inner ring, 3b...Outer ring, 6...Bearing retainer plate, 10...Bearing nut, 10a...Indentation, 11...Corrugated washer.

Claims

[Scope of utility model registration request]

In an electric motor in which the rotor is supported by a pair of ball bearings whose inner ring is press-fitted into the shaft, the outer ring of one ball bearing is fixed to a bracket with a holding plate, and the ball bearing is attached to the outside of the axial end surface of the other ball bearing. A bearing nut is disposed so as to be movable in the axial direction so as to be in contact with the axial end face of the outer ring or to face it with a gap, a recess is provided in the end face on the ball bearing side of the bearing nut, and the ball bearing is inserted into the recess. A motor bearing structure that houses a corrugated washer that comes into contact and applies preload to the ball bearing.