JPH0332245U

JPH0332245U -

Info

Publication number: JPH0332245U
Application number: JP9310289U
Authority: JP
Priority date: 1989-08-07
Filing date: 1989-08-07
Publication date: 1991-03-28

Description

[Brief explanation of drawings]

第１図は本考案の一実施例であるウオーム歯車
装置を示す平面断面図、第２図は第１図の−
線に沿う一部省略断面図、第３図はダンパの変形
例を示す分解斜視図、第４図以降はその作用を説
明するための各説明図であり、第４図、第５図、
第６図、第７図、第８図および第９図はギヤ打ち
音発生のメカニズムを説明するための各説明図、
第１０図はモータ電流の特性線図、第１１図はギ
ヤ打ち音の特性線図、第１２図は緩衝部材がない
従来例におけるモータ電流の特性線図、第１３図
は同じくギヤ打ち音の特性線図である。１…モータ、２…回転軸、３…モータハウジン
グ、４…ギヤハウジング、５，６…左右ねじれウ
オーム、７，８…支軸、９，１０…ウオームホイ
ール、１１，１２…ピニオンギヤ、１３…スパー
ギヤ（駆動ギヤ）、１４…クランク軸、１５，１
５Ａ…ダンパ（緩衝部材）、１６…係合凸部、１
７…スプライン、１８…取付穴、１９…係合凹部
、２０，２１…半円柱形溝、２２…円柱形中空部
。 Fig. 1 is a plan sectional view showing a worm gear device which is an embodiment of the present invention, and Fig. 2 is a - of Fig. 1.
FIG. 3 is an exploded perspective view showing a modified example of the damper, and FIG. 4 and subsequent figures are explanatory views for explaining its functions.
6, 7, 8 and 9 are explanatory diagrams for explaining the mechanism of gear rattling noise,
Fig. 10 is a characteristic diagram of motor current, Fig. 11 is a characteristic diagram of gear striking noise, Fig. 12 is a characteristic diagram of motor current in a conventional example without a buffer member, and Fig. 13 is a characteristic diagram of gear striking noise. It is a characteristic line diagram. DESCRIPTION OF SYMBOLS 1...Motor, 2...Rotating shaft, 3...Motor housing, 4...Gear housing, 5, 6...Left and right twisting worm, 7, 8...Spin shaft, 9, 10...Worm wheel, 11, 12...Pinion gear, 13...Spur gear (driving gear), 14... crankshaft, 15, 1
5A...damper (buffer member), 16...engaging protrusion, 1
7... Spline, 18... Mounting hole, 19... Engaging recess, 20, 21... Semi-cylindrical groove, 22... Cylindrical hollow part.

Claims

[Scope of utility model registration request]

A pair of worms having opposite twists at the tip of a rotating shaft, a pair of worm wheels meshed with each worm, and a pair of pinion gears connected to each worm wheel so as to rotate integrally with each other. , a worm gear device having a drive gear meshed with both pinion gears, and an output shaft that is interlocked with the drive gear to decelerate the rotation of the rotating shaft and transmit it to the load, wherein both the worm wheels and the pinion gear are connected to each other. A worm gear device characterized in that a buffer member is interposed between at least one of the worm gears.