JPH0248644U

JPH0248644U -

Info

Publication number: JPH0248644U
Application number: JP12855288U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-04

Description

[Brief explanation of drawings]

第１図は本発明の一実施例の外面を示す正面図
である。第２図は該実施例の背外面を示す背面図
である。第３図は、第２図に示す出力軸１２に沿
つて第２図の紙面と平行に該実施例を切断した横
断面を示す断面図である。第４図は第２図の―
線断面を示す縦断面図である。第６図は該実施
例のカバー板２４およびガスケツト２３を外した
、歯車ハウジング２１の開口端面を示す底面図で
ある。第５図は第３図に示す出力軸１２と第２扇
形歯車１３を、それらの結合を分解して示す分解
断面図である。第７図は第２図に示すガスケツト
２３の平面図である。第８図は、該実施例の電動
減速装置の出力軸１２で駆動する車両上エンジン
のスロツトルバルブ駆動機構の概要を示す斜視図
である。１：電気モータ、２：ウオーム、３：クラツチ
駆動歯車、３ａ：ピン、４：軸、５：電気コイル
、６：円板、６ａ：穴、７：板ばね、８：クラツ
チ従動歯車、１１：第１扇形歯車、１２：出力軸
、１２ａ：溝、１３：第２扇形歯車（２，３，８
，１１，１２，１３：減速機構）、１３ａ：貫通
穴、１３ｂ〜１３ｄ：爪、１４：ピニオンギア（
センサ駆動歯車）、１５：プリント基板、１６〜
１８：導体板、１６ａ，１６ｂ，１７ａ，１８ａ
：接点部材、１９，２０：アーム、２１：歯車ハ
ウジング（装置ハウジング）、２２：モータケー
ス、２３：ガスケツト（シール材）、２４：カバ
ー板（カバー）、２５：開口、２６：グロメツト
、２６ａ：溝（シール材に対向する面）、２６ｂ
：気密台部、２６ｃ：突条、２７：電気リード、
２８：穴（貫通穴）、２９：フイルタ（通気性フ
イルタ）、３０：リング、３１：リテーナ、３２
：プレート、３３：ベアリング、３４：ベアリン
グ、３５：ポテンシヨメータ（角度センサ）、３
６：ロツクねじ（ねじ）、３７：シール材、３８
：ゴムシール、６９：スロツトルバルブ。 FIG. 1 is a front view showing the outer surface of an embodiment of the present invention. FIG. 2 is a rear view showing the back outer surface of the embodiment. FIG. 3 is a sectional view showing a transverse cross section of the embodiment along the output shaft 12 shown in FIG. 2 and parallel to the paper plane of FIG. Figure 4 is the same as Figure 2.
FIG. 3 is a vertical cross-sectional view showing a line cross section. FIG. 6 is a bottom view showing the open end surface of the gear housing 21 with the cover plate 24 and gasket 23 removed. FIG. 5 is an exploded cross-sectional view showing the output shaft 12 and the second sector gear 13 shown in FIG. 3, with their connections separated. FIG. 7 is a plan view of the gasket 23 shown in FIG. 2. FIG. 8 is a perspective view schematically showing a throttle valve drive mechanism for a vehicle engine driven by the output shaft 12 of the electric reduction gear of this embodiment. 1: Electric motor, 2: Worm, 3: Clutch drive gear, 3a: Pin, 4: Shaft, 5: Electric coil, 6: Disk, 6a: Hole, 7: Leaf spring, 8: Clutch driven gear, 11: 1st sector gear, 12: Output shaft, 12a: Groove, 13: 2nd sector gear (2, 3, 8
, 11, 12, 13: reduction mechanism), 13a: through hole, 13b to 13d: pawl, 14: pinion gear (
sensor drive gear), 15: printed circuit board, 16~
18: Conductor plate, 16a, 16b, 17a, 18a
: Contact member, 19, 20: Arm, 21: Gear housing (device housing), 22: Motor case, 23: Gasket (sealing material), 24: Cover plate (cover), 25: Opening, 26: Grommet, 26a: Groove (surface facing sealing material), 26b
: Airtight stand part, 26c: Projection, 27: Electric lead,
28: Hole (through hole), 29: Filter (breathable filter), 30: Ring, 31: Retainer, 32
: Plate, 33: Bearing, 34: Bearing, 35: Potentiometer (angle sensor), 3
6: Lock screw (screw), 37: Seal material, 38
: Rubber seal, 69: Throttle valve.

Claims

[Claims for Utility Model Registration] A reduction mechanism comprising a reduction gear, an angle sensor having a rotating shaft to which a sensor drive gear coupled to the reduction gear is fixed, and generating an electrical signal indicating the rotation angle of the rotating shaft; In the gear reduction device, the sensor drive gear is provided with a device housing that houses the device housing, a cover that closes an opening of the device housing, and a sealing material inserted between the device housing and the cover, wherein the sensor drive gear is positioned relative to the rotation axis of the angle sensor. A screw is screwed onto the sensor drive gear, and the screw is connected to the rotation shaft to fix the sensor drive gear to the rotation shaft, and the device housing includes a screw operating tool for loosening and tightening the screw. What is claimed is: 1. A gear reduction gear device comprising: a through-hole through which a gas can be inserted; and an air-permeable filter that closes the through-hole.