JPH0186490U

JPH0186490U -

Info

Publication number: JPH0186490U
Application number: JP18102587U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-08

Description

[Brief explanation of the drawing]

第１図は本考案の表面波モータの一実施例を示
す縦断面図である。第２図及び第３図は公知の表
面波モータの原理的説明図である。第４図は従来
例の表面波モータの縦断面図である。１……ステータ組立品、２……ロータ組立品、
３，３′……シヤフト、３ａ……大径部、３_ａ−
１……段付部、３ｂ……有底穴、４，４′……ケ
ース、４ａ，４ａ′……ケース本体、４ｂ，４ｂ
′……ケース蓋、５……スラストベアリング、６
……軸受スリーブ、７，７′……ダストカバー、
８，８′……パツキン、９，９′……スプリング
、１０……ボールベアリング、２１……軸受スリ
ーブ、２２……片持軸、２３……スラストプレー
ンベアリング。 FIG. 1 is a longitudinal sectional view showing an embodiment of the surface wave motor of the present invention. FIGS. 2 and 3 are diagrams explaining the principle of a known surface wave motor. FIG. 4 is a longitudinal sectional view of a conventional surface wave motor. 1... Stator assembly, 2... Rotor assembly,
3, 3'...Shaft, 3a...Large diameter portion, 3 _{a-
1} ...Stepped part, 3b...Bottomed hole, 4, 4'...Case, 4a, 4a'...Case body, 4b, 4b
'...Case lid, 5...Thrust bearing, 6
...Bearing sleeve, 7,7'...Dust cover,
8, 8'...Packskin, 9,9'...Spring, 10...Ball bearing, 21...Bearing sleeve, 22...Cantilever shaft, 23...Thrust plane bearing.

Claims

[Scope of Claim for Utility Model Registration] (a) A stator assembly is fixed to a case; (b) A rotor assembly is fixed to a shaft that penetrates the wall of the case and has one end inserted into the case. (c) a surface wave motor in which the end of the shaft is rotatably supported on the inner surface of the case via a bearing sleeve and a thrust bearing; (d) one end of the shaft has a stepped surface; (e) A bottomed hole with a smaller diameter than the large diameter portion is provided concentrically with the large diameter portion, (f) a bearing sleeve is provided at the bottom of the bottomed hole. (g) a cantilevered shaft member that fits into the bearing sleeve is integrally provided at a location where the inner surface of the case faces one end of the shaft; (h) the shaft A surface wave motor characterized in that an annular thrust plane bearing arranged concentrically with the member is interposed between an end surface of the shaft and an inner surface of the case.