JPS61103652U

JPS61103652U -

Info

Publication number: JPS61103652U
Application number: JP18825784U
Authority: JP
Priority date: 1984-12-12
Filing date: 1984-12-12
Publication date: 1986-07-01

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す縦断面図、第２
図は第１図の要部拡大図、第３図は従来技術を示
す縦断面図である。１…支持部材、１Ａ…歯部、１Ｂ…ストツパ部
、２…油圧モータ、３…ハウジング、４…ドラム
、５，６…リングギヤ、５Ａ，６Ａ…内歯車、７
…底蓋、１２…スペーサ、１４…１段目の減速歯
車機構、２０…２段目（中間段）の減速歯車機構
、２６…３段目（最終段）の減速歯車機構、１５
，２１，２７…太陽歯車、１６，２２，２８…遊
星歯車、１９，４１，４２…キヤリア、４１Ｂ，
４１Ｃ，４２Ｃ…摺接部。 Fig. 1 is a vertical sectional view showing an embodiment of the present invention;
The figure is an enlarged view of the main part of FIG. 1, and FIG. 3 is a longitudinal sectional view showing the prior art. DESCRIPTION OF SYMBOLS 1... Support member, 1A... Teeth part, 1B... Stopper part, 2... Hydraulic motor, 3... Housing, 4... Drum, 5, 6... Ring gear, 5A, 6A... Internal gear, 7
...Bottom cover, 12...Spacer, 14...1st stage reduction gear mechanism, 20...2nd stage (intermediate stage) reduction gear mechanism, 26...3rd stage (final stage) reduction gear mechanism, 15
, 21, 27... Sun gear, 16, 22, 28... Planet gear, 19, 41, 42... Carrier, 41B,
41C, 42C...Sliding contact part.

Claims

[Scope of utility model registration request]

a support member, a housing rotatably supported by the support member and provided with an internal gear on the inner circumferential side, a rotation source provided on the support member to rotationally drive the housing, and an output rotation of the rotation source. In order to reduce the speed and transmit it to the housing, a multi-stage reduction gear mechanism having at least three stages is provided, which includes a sun gear, a planetary gear that meshes with the sun gear and the internal gear, and a carrier that supports the planetary gear. The first-stage and intermediate-stage carriers revolve together with the planetary gear in order to transmit the revolution of the planetary gear to the next-stage sun gear, and the first-stage carrier is rotated in the axial direction by the bottom cover of the housing. In the planetary gear reduction device in which the carrier in the final stage is positioned in the axial direction and rotational direction by the support member, the carrier in the intermediate stage is hardened by surface hardening treatment, and the carrier in the intermediate stage is One side wall is in sliding contact with the side wall of the first stage carrier, and the other side wall of the intermediate stage carrier is in sliding contact with the side wall of the final stage carrier. A planetary gear reduction device featuring: