Title:
BALL TYPE SPEED REDUCER
Document Type and Number:
WIPO Patent Application WO/2018/092579
Kind Code:
A1
Abstract:
[Problem] To provide a ball type speed reducer which has a simple structure and which can be manufactured with reduced man-hours. [Solution] This ball type speed reducer 1 comprises: an eccentric circular plate cam 3 pivoting with an input-side rotating body 2; a rocking body 4 which is rocked while being fitted to the outer peripheral side of the eccentric circular plate cam 3 so as to be capable of pivoting relative to the eccentric circular plate cam 3; a plurality of balls 5 accommodated in a rollable manner within the ball holding section 23 of the rocking body 4; and an affixation member 6 having formed thereon a first side surface 24 facing one side surface 4a of the rocking body 4. An output-side rotating body 7 has formed thereon a second side surface 40 facing the other side surface 4b of the rocking body 4. The first side surface 24 has formed therein a plurality of radial grooves 30 for radially guiding the balls 50. The second side surface 40 has formed therein an annular wave-shaped groove 31 for circumferentially guiding the balls 5 in an undulating manner. The balls 5 are engaged with the radial grooves 30 and the wave-shaped groove 31 and are rolled within the radial grooves 30 and the wave-shaped groove 31 when the rocking body 4 is rocked by the eccentric circular plate cam 3.
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Inventors:
KAJIWARA YASUSHI (JP)
Application Number:
PCT/JP2017/039304
Publication Date:
May 24, 2018
Filing Date:
October 31, 2017
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
F16H1/32; F16H25/06
Foreign References:
| JPH04500714A | 1992-02-06 | |||
| DE19757845A1 | 1999-07-01 |
Attorney, Agent or Firm:
OHNUKI & KOTAKE (JP)
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