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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2017/082208
Kind Code:
A power transmitting device is provided with: an eccentrically rotating member wherein a main shaft section which is supported so as to be rotatable about a first axis and an eccentric shaft section which lies on a second axis are integrally connected; and a second power transmitting member disposed adjacent to a first power transmitting member and rotatably supported by the eccentric shaft section. A shift mechanism between the first and second power transmitting members is constituted by: a hypotrochoidal first power transmitting groove and an epitrochoidal second power transmitting groove, which are formed in one and the other of the relatively facing surfaces of both the power transmitting members; and spherical bodies for performing the transmission and reception of torque between both the power transmitting grooves while rolling on both the power transmitting grooves. The first and second power transmitting grooves (21, 22) are each formed so that the power transmitting groove (21, 22) and a spherical body (23) will be in contact with each other at two contact points (A, B; A', B'), and the minimum curvature radius (R, R') of the locus (PB, PB') of the contact point (B, B') on the outer side of a bend of the power transmitting groove will be greater than 1/2 the distance (d, d') between the two contact points of the spherical body. Consequently, the spherical bodies smoothly roll along the entire circumference of the power transmitting grooves, and torque transmission and reception between both the power transmitting members can be efficiently performed.

SAKATA Shohei (39-5, Aza Daizen, Ueta-cho, Toyohashi-sh, Aichi 60, 〒4418560, JP)
Application Number:
Publication Date:
May 18, 2017
Filing Date:
November 07, 2016
Export Citation:
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MUSASHI SEIMITSU INDUSTRY CO., LTD. (39-5, Aza Daizen Ueta-cho, Toyohashi-sh, Aichi 60, 〒4418560, JP)
International Classes:
F16H25/06; F16H13/08
Foreign References:
Attorney, Agent or Firm:
OCHIAI & CO. (TO Building, 6-3 Taito 2-chome, Taito-k, Tokyo 16, 〒1100016, JP)
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