JPH0488450U

JPH0488450U -

Info

Publication number: JPH0488450U
Application number: JP40326790U
Authority: JP
Priority date: 1990-12-14
Filing date: 1990-12-14
Publication date: 1992-07-31

Description

[Brief explanation of drawings]

第１図は本考案の軸封構造の拡大断面図、第２
図は本考案の一実施例における歯車減速機付電動
機の軸封構造の断面図、第３図及び第４図は径方
向に弾性変形可能な中空円筒の見取り図、第５図
は従来の歯車減速機付電動機の軸封構造の断面図
である。１……ブラケツト、２……オイルシール、３…
…電動機回転軸、３ａ……ハスバ歯車、４……玉
軸受、６，７，８……歯車、９……出力軸、１０
……歯車箱、１１……オイルシール、１２……潤
滑用グリース、２０……溝、２１……中空円筒。 Figure 1 is an enlarged sectional view of the shaft sealing structure of the present invention, Figure 2
The figure is a sectional view of the shaft sealing structure of a motor with a gear reduction gear according to an embodiment of the present invention, Figures 3 and 4 are sketches of a hollow cylinder that can be elastically deformed in the radial direction, and Figure 5 is a conventional gear reduction gear structure. FIG. 3 is a sectional view of a shaft sealing structure of an electric motor. 1...Bracket, 2...Oil seal, 3...
...Electric motor rotating shaft, 3a... Helical gear, 4... Ball bearing, 6, 7, 8... Gear, 9... Output shaft, 10
... Gear box, 11 ... Oil seal, 12 ... Lubricating grease, 20 ... Groove, 21 ... Hollow cylinder.

Claims

[Scope of utility model registration request]

A bracket is provided with a bearing insertion hole into which a bearing is inserted and an oil seal, and an electric motor rotation shaft that has a helical gear at the tip and rotates while protruding from the inner diameter of the oil seal of the bracket, and the helical gear at the tip of the motor rotation shaft. An electric motor with a gear reduction gear, wherein a groove is provided in the circumferential direction of the outer diameter of an incomplete gear cutting part located between an effective gear cutting part and an oil seal part, and the groove part is provided with a hollow cylinder that can be elastically deformed in the radial direction. Shaft seal structure.