JPH0165968U - - Google Patents

Description

[Brief explanation of drawings]

1 and 2 are diagrams showing one embodiment of the speed reduction device according to the present invention, and FIG. 1 is a front sectional view thereof, and FIG.
The figure is a cross-sectional view taken along the arrow -- in FIG. 1, and FIG. 3 is a cross-sectional view showing a conventional speed reduction device. 21...Input shaft, 22...Fixed end plate, 24...
Small gear (transmission member), 25...camshaft, 26...
Large gear (transmission member), 27... Eccentric cam, 28...
...First external gear, 28a...Tooth profile, 30...First support member, 31...Second support member, 35...First internal gear, 35a...Outer periphery, 36...Pin (tooth profile) ), 37...First reduction mechanism, 39...Second external gear, 39a, 39b...Tooth section, 40...Second internal gear, 40a...Tooth section, 41...Roller, 42... Third internal gear, 42a...Tooth profile portion, 4
4...Roller, 45...Output end plate, 48...Second
Reduction mechanism, X-X...axis line.

Claims (1)

[Scope of utility model registration request] An input shaft rotatably supported by a fixed end plate, a cam shaft provided radially outward of the input shaft and having an eccentric cam and rotationally driven by the input shaft via a transmission member, and a cam shaft provided on the outer periphery of the input shaft. The first shaft is formed with a trochoidal tooth profile, through which the camshaft passes and engages with the eccentric cam, and swings eccentrically around the axis XX of the input shaft.
an external gear, a first support member and a second support member that are provided opposite to each other with the first external gear in between, each rotatably supporting a camshaft, and are integrally connected to each other; A toothed part consisting of a large number of pins etc. is provided on the periphery, and the gear engages with the toothed part of the first external gear through the toothed part and rotates, and the outer periphery is eccentric with respect to the axis XX of the input shaft. a first internal gear provided therein; a first reduction mechanism comprising a first internal gear; A second external gear has a pair of numerous trochoidal tooth profile parts formed on its outer periphery, and a large number of trochoidal tooth profile parts are formed on its inner periphery, and one of the second external gears has a pair of trochoidal tooth profile parts formed on its outer periphery. a second internal gear that engages with the tooth profile and is coaxial with the input shaft of the first reduction mechanism; a second internal gear that is fixed to the fixed end plate coaxially with the input shaft of the first reduction mechanism; and a number of trochoids on the inner periphery; a third internal gear in which a tooth profile of the system is formed and engages with the other tooth profile of the second external gear via a number of rollers, and a third internal gear fixed to the second internal gear;
an output end plate provided coaxially with the second internal gear, and a second reduction mechanism provided radially outward of the first reduction mechanism, and one of the fixed end plate and the output end plate. One side supports the first support member and the second support member of the first reduction mechanism, and rotates the first internal gear of the first reduction mechanism by rotation of the input shaft, and the second external gear of the second reduction mechanism. Axis of gear input shaft
The second internal gear of the second reduction mechanism is rotated through a roller while being eccentrically oscillated around X, thereby transmitting rotation reduced at a high reduction ratio to the output end plate. Reduction device.