JPH0321569U

JPH0321569U -

Info

Publication number: JPH0321569U
Application number: JP1989082451U
Authority: JP
Priority date: 1989-07-13
Filing date: 1989-07-13
Publication date: 1991-03-04

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る始動電動機の
主要部を示す断面図、第２図は第１図の−線
に沿つて得た断面図、第３図は従来の始動電動機
の主要部を示す断面図、第４図は第３図に示され
た始動電動機においてピニオン移動体が前方へ摺
動した状態を示す断面図、第５図は第３図に示さ
れる従来の始動電動機におけるオイルシール部を
示す断面図である。１……前部機枠、２……開口部、３……出力回
転軸、４……ピニオン移動体、４ａ……ピニオン
部、４ｂ……摺動支持面、２０……始動電動機、
２１……オイルシール、２１ａ……径方向伸長部
、２１ｂ……第１のリツプ部、２１ｃ……軸方向
伸長部、２１ｄ……第２のリツプ部、２２……排
水孔、２３……ホルダ。なお、各図中同一符号は
同一部分又は相当する部分を示す。 Fig. 1 is a sectional view showing the main parts of a starting motor according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a main part of a conventional starting motor. FIG. 4 is a cross-sectional view showing the starter motor shown in FIG. 3 with the pinion moving body sliding forward, and FIG. 5 is a cross-sectional view of the conventional starter motor shown in FIG. 3. It is a sectional view showing an oil seal part. DESCRIPTION OF SYMBOLS 1... Front machine frame, 2... Opening, 3... Output rotating shaft, 4... Pinion moving body, 4a... Pinion part, 4b... Sliding support surface, 20... Starting motor,
21... Oil seal, 21a... Radial extension part, 21b... First lip part, 21c... Axial extension part, 21d... Second lip part, 22... Drain hole, 23... Holder . Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A pinion moving body is formed on the front machine frame, and is slidably fitted and supported on the output rotating shaft, and has one end as a pinion part and the other end as a sliding support surface for a bearing provided on the front machine frame. In the starter motor that goes in and out of the opening of the front machine frame, the radially extending part is attached to the opening of the front machine frame and has a tip end as a first lip part that comes into contact with the sliding support surface of the pinion moving body. and an oil seal including an axially extending portion with a tip portion as a second lip portion, a drainage hole formed in the axially extending portion of the oil seal, and a drain hole formed in the sliding support surface of the pinion moving body. and a cover member attached close to or in contact with the second lip portion when the pinion moving body is in a rest position.