Eccentric oscillating type speed reducer

Details Eccentric oscillating type speed reducer Eccentric oscillating type speed reducer

2011-07-12

2011-07-12

Young, Edwin A (Department: 3655)

Planetary gear transmission systems or components

With transmission cooling or heating means

C475S162000

Reexamination Certificate

active

07976420

ABSTRACT:
The present invention provides an eccentric oscillating type speed reducer that can more effectively be cooled with an extremely simple structure.An eccentric oscillating type speed reducer1includes a camshaft11having crank portions11aand11b, a plurality of externally toothed gear members12that respectively have holes, each of which accommodates an associated one of the crank portions, and that are eccentrically moved by rotation of the camshaft, an internally toothed gear member13having an inner peripheral surface in which internal teeth to be meshed with external teeth formed on external peripheral surfaces of the externally toothed gear members are formed so as to set the number of the internal teeth to be slightly larger than that of external teeth, and support members14respectively positioned at both ends of the externally toothed gear members so as to rotatably support both ends of the camshaft. Further, support members18and19are integrally coupled to each other via a pillar portion17. In the eccentric oscillating type speed reducer1, a coolant passage30passing through the integrally coupled support members18and10, and the pillar portion17is provided. A coolant, such as cooling water or cooling air, is passed through the coolant passage. Consequently, the eccentric oscillating type speed reducer can efficiently be cooled.

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Office Action Issued Oct. 8, 2010 in Chinese Appln. Ser. No. 200780003130.9.

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