JPS62184172U

JPS62184172U -

Info

Publication number: JPS62184172U
Application number: JP7417186U
Authority: JP
Priority date: 1986-05-15
Filing date: 1986-05-15
Publication date: 1987-11-21
Anticipated expiration: 2001-05-15
Also published as: JPH0526310Y2

Description

[Brief explanation of drawings]

第１図はこの考案による遊星歯車減速装置付始
動電動機の一実施例を示す内歯歯車部の正面断面
図、第２図は第１図のゴム緩衝体装着部の拡大展
開断面図、第３図はこの考案の他の実施例を示す
ゴム緩衝体装着部の拡大展開断面図、第４図及び
第５図は従来の始動電動機の遊星歯車減速装置部
を示し、第４図は第５図の―線に沿う断面図
、第５図は第４図の―線における断面図、第
６図は第４図のゴム緩衝体装着部の拡大展開断面
図、第７図は第６図の内歯歯車が回動されゴム緩
衝体が異常変形した状態を示す拡大展開断面図で
ある。１……回転軸、６……出力軸、１０……遊星歯
車減速装置、１１……太陽歯車、１２……遊星歯
車、２０……オーバランニングクラツチ、２１…
…ピニオン、３１……前ブラケツト、３１ｃ……
受止め突起、３１ｄ……受け溝、３２……内歯歯
車、３２ｃ……収容溝、３２ｄ……規制突起、３
３……ゴム緩衝体、３１ｆ……受止め突起、３１
ｇ……受止め辺部、３１ｈ……規制辺部。なお、
図中同一符号は同一又は相当部分を示す。 Fig. 1 is a front cross-sectional view of an internal gear portion showing an embodiment of a starter motor with a planetary gear reduction device according to this invention, Fig. 2 is an enlarged developed cross-sectional view of the rubber buffer mounting portion of Fig. 1, and Fig. 3 The figure is an enlarged cross-sectional view of a rubber shock absorber attachment part showing another embodiment of this invention, FIGS. 4 and 5 show a planetary gear reduction device part of a conventional starter motor, and FIG. 5 is a sectional view taken along the line ``-'' in FIG. FIG. 6 is an enlarged developed cross-sectional view showing a state in which the gear is rotated and the rubber buffer body is abnormally deformed. DESCRIPTION OF SYMBOLS 1...Rotating shaft, 6...Output shaft, 10...Planetary gear reduction gear, 11...Sun gear, 12...Planetary gear, 20...Overrunning clutch, 21...
...Pinion, 31...Front bracket, 31c...
Receiving protrusion, 31d...Receiving groove, 32...Internal gear, 32c...Accommodating groove, 32d...Regulating protrusion, 3
3...Rubber shock absorber, 31f...Receiving protrusion, 31
g...Receiving side part, 31h...Restricting side part. In addition,
The same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] (1) An internal gear is fitted and supported on the outer periphery of the bracket of the fixed part of the drive motor, and is regulated to be able to rotate at a predetermined rotation angle. A sun gear is formed on the shaft end side of the rotating shaft of the electric motor, and a plurality of planetary gears are interposed between the sun gear and the internal gear, and the revolution of the planetary gears is transmitted to the output shaft, causing the output shaft to rotate. In a starting electric motor in which a pinion is pushed out by a pushing means attached to a shaft and the starting rotation is transmitted to the engine by this pinion, accommodation grooves are provided at a plurality of locations in the circumferential direction on the outer periphery of the internal gear; a plurality of receiving protrusions provided on the inner circumferential portion of the bracket, each of which is inserted into each of the housing grooves, and which abuts the side wall surface on the side in the rotation direction in which the internal gear is received, of both side wall surfaces of the housing groove;
Each of the housing grooves is provided with a rubber buffer inserted into a circumferential space between the other side wall surface and the receiving protrusion, so that the impact caused by starting is buffered by compression of the rubber buffer. A starting motor with a planetary gear reduction device, which is characterized by: (2) The rotation regulating means of the internal gear is provided with a regulating protrusion provided on the outer periphery of the internal gear and on the inner periphery of the bracket, into which the regulating protrusion is inserted;
The starting motor with a planetary gear reduction device according to claim 1, which is a registered utility model, and includes a receiving groove for receiving the regulating protrusion at a position where the rotation angle of the internal gear reaches an allowable compression amount of the buffer rubber. (3) The rotation regulating means for the internal gear consists of a receiving protrusion provided on the bracket with a receiving side in the radial direction and a receiving side extending from this end in the circumferential direction along the bottom of the housing groove. and a tip of the receiving side portion contacts and is received by the other side wall surface of the receiving groove at a position where the buffer rubber reaches an allowable compression amount at the time of startup. A starting motor with a planetary gear reduction device according to claim 1 of the patent registration claim. (4) The internal gear is made of a fiber-reinforced plastic molded product.
A starting motor with a planetary gear reduction device according to any one of paragraphs.