JPS62104573U

JPS62104573U -

Info

Publication number: JPS62104573U
Application number: JP19755285U
Authority: JP
Priority date: 1985-12-23
Filing date: 1985-12-23
Publication date: 1987-07-03

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の要部概略断面図
、第２図はステツプモータの概略を示す断面図、
第３図はベアリングの要部断面図、第４図はがた
つきをなくした構成を示すベアリングの要部断面
図、第５図および第６図はそれぞれ従来例の要部
断面図である。１……内つば、２……軸受孔、３……ハウジン
グ、４，５……ベアリング、６，７……内輪、８
……シヤフト、９，１０……ブツシユ、１１，１
２……円板形磁石ロータ、１３……弾性体、１５
，１６……外輪。 FIG. 1 is a schematic sectional view of the main parts of an embodiment of this invention, FIG. 2 is a sectional view schematically showing a step motor,
FIG. 3 is a cross-sectional view of a main part of a bearing, FIG. 4 is a cross-sectional view of a main part of a bearing showing a structure that eliminates backlash, and FIGS. 5 and 6 are cross-sectional views of main parts of a conventional example. 1... Inner rib, 2... Bearing hole, 3... Housing, 4, 5... Bearing, 6, 7... Inner ring, 8
...Shaft, 9,10...Butsuyu, 11,1
2...Disk-shaped magnet rotor, 13...Elastic body, 15
, 16...outer ring.

Claims

[Scope of utility model registration request]

A housing having a bearing hole with an inner flange formed on the inner periphery, a pair of bearings inserted into the bearing hole and having outer rings fixed to both sides of the inner flange, and a shaft press-fitted into the inner rings of these bearings. , a pair of disk-shaped bushes that are press-fitted on both sides of the shaft to clamp the inner rings of the pair of bearings, and that require a press-fitting force greater than the press-fitting force that press-fits the shaft into the bearings; a pair of stators having a magnetic rotor, an elastic body compressed and interposed between at least one of the bushing and the inner ring of the bearing, and a magnetic pole toothed core and an excitation coil facing each magnetic pole of the disc-shaped magnetic rotor. A step motor with