JPH0342069U

JPH0342069U -

Info

Publication number: JPH0342069U
Application number: JP10333189U
Authority: JP
Priority date: 1989-09-01
Filing date: 1989-09-01
Publication date: 1991-04-22

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例に係る始動電動
機を示す断面図、第２図は本考案の第２の実施例
に係る始動電動機を示す断面図、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
シールを示す断面図であ。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、２０，３０……始動電
動機、２１……オイルシール、２１ａ……リツプ
部、２２……鍔部、２４……水抜き穴、２６……
大気連通穴。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 a starting motor according to a first embodiment of the present invention, FIG. 2 is a sectional view showing a starting motor according to a second embodiment of the present invention, and FIG. 3 is a sectional view of a conventional starting motor. A sectional view showing the main parts of the
FIG. 5 is a cross-sectional view showing a state in which the pinion moving body slides forward in the starter motor shown in the figure, and FIG. 5 is a cross-sectional view showing an oil seal in the conventional starter motor shown in FIG. 3. 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, 30... Starting motor, 21... Oil seal, 21a... Lip part, 22... Flam part, 24... Drain hole, 26...
Atmospheric communication hole. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A pinion moving body that is slidably supported on the output rotating shaft, whose outer periphery is a sliding support surface for a bearing provided on the front machine frame, and where a pinion is formed on the front end side. In the starter motor, which enters and exits through an opening formed in the front machine frame, the starter motor is attached to the opening, and the inner circumferential edge as a whole projects outward of the front machine frame along the axial direction, and the tip end is attached to the opening. an annular seal having a lip portion; and a flange portion provided on the sliding support surface of the pinion moving body and attached to a position that contacts the lip portion of the seal when the pinion moving body is in a stationary position. , a drain hole formed in the rear machine frame of the starter motor on the opposite side in the axial direction from the opening, and a suitable position in the machine frame of the starter motor to prevent water from entering and to allow only air to pass through. A starting motor comprising an atmosphere communication hole. (2) A pinion moving body is formed on the front machine frame, which is slidably supported on the output rotating shaft, has an outer peripheral portion serving as a sliding support surface for a bearing provided on the front machine frame, and has a pinion formed on the front end side. In the starter motor that goes in and out of the opening, the lip at the tip of the inner peripheral edge attached to the opening and bent in the axial direction and outward of the machine frame is brought into contact with the sliding support surface of the pinion moving body. a water drain hole formed in the rear machine frame of the starter motor on the opposite side in the axial direction from the opening; A starting motor comprising an atmosphere communication hole formed to allow passage through the atmosphere.