JPH02114371U

JPH02114371U -

Info

Publication number: JPH02114371U
Application number: JP2363489U
Authority: JP
Priority date: 1989-02-28
Filing date: 1989-02-28
Publication date: 1990-09-13
Anticipated expiration: 2004-02-28
Also published as: JP2562082Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す要部断面図、
第２図はすべり軸受の要部拡大断面図、第３図と
第４図と第５図は夫々他の実施例を示す要部断面
図である。１……回転軸、２……外周面、３……モータブ
ラケツト、４……円筒ボス部、５……内周面、６
……ころがり軸受、７……すべり軸受、８……含
油摺接部、９……含油非接触筒状部、１０……先
端面、１１……外輪。 FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the present invention;
FIG. 2 is an enlarged sectional view of a main part of a sliding bearing, and FIGS. 3, 4, and 5 are sectional views of main parts showing other embodiments, respectively. DESCRIPTION OF SYMBOLS 1...Rotating shaft, 2...Outer circumferential surface, 3...Motor bracket, 4...Cylindrical boss portion, 5...Inner circumferential surface, 6
... Rolling bearing, 7 ... Sliding bearing, 8 ... Oil-impregnated sliding contact portion, 9 ... Oil-impregnated non-contact cylindrical portion, 10 ... Tip surface, 11 ... Outer ring.

Claims

[Claims for Utility Model Registration] 1. A rolling bearing 6 and a sliding bearing 7 are disposed between the outer circumferential surface 2 of the rotating shaft 1 and the inner circumferential surface 5 of the cylindrical boss portion 4 of the motor bracket 3, and the above-mentioned The sliding bearing 7 is integrally formed with an oil-impregnated sliding contact portion 8 that slides in contact with the outer circumferential surface 2 of the rotating shaft 1, and extends from the oil-impregnated sliding contact portion 8 in the direction of the rolling bearing 6. A DC motor characterized by comprising an outer circumferential surface 2 and an oil-impregnated non-contact cylindrical portion 9 that is in a non-contact state. 2. The DC motor according to claim 1, wherein a distal end surface 10 of the oil-impregnated non-contact cylindrical portion 9 is in contact with an outer ring 11 of the rolling bearing 6.