Title:
SERIES FOR DIFFERENTIAL REDUCTION GEAR AND METHOD FOR MANUFACTURING SERIES FOR DIFFERENTIAL REDUCTION GEAR
Document Type and Number:
WIPO Patent Application WO/2018/168762
Kind Code:
A1
Abstract:
[Problem] To share components and minimize manufacturing costs without reducing the strength of an externally toothed gear. [Solution] A series S having a plurality of differential reduction gears 1A-1C prepared at different reduction ratios, the differential reduction gears comprising: an internally toothed gear 4; an input shaft 12 that coaxially passes through the internally toothed gear 4; externally toothed gears 17A-17C that are externally fitted on eccentric parts 14A-14C provided to the input shaft 12, that mesh with the inner side of the internally toothed gear 4, and that have a plurality of pin holes 21A-21C in concentric circles; and an output shaft in which a plurality of pins 22, 22… loosely inserted into the pin holes 21A-21C are provided in concentric circles, the output shaft being rotated via the pins 22 at a prescribed reduction ratio due to the rotation of the input shaft 12 causing the externally toothed gears 17A-17C to move eccentrically; wherein the pin holes 21A-21C of the externally toothed gears 17A-17C are formed at different diameters for each externally toothed gear 17A-17C in accordance with the number of external teeth, and the internally toothed gear 4 and the pins 22 are shared.
Inventors:
HARAGUCHI KUNIHIRO (JP)
Application Number:
PCT/JP2018/009491
Publication Date:
September 20, 2018
Filing Date:
March 12, 2018
Export Citation:
Assignee:
NISSEI CORP (JP)
International Classes:
F16H1/32; F16H57/033
Foreign References:
| JP2014199121A | 2014-10-23 | |||
| JPH05231482A | 1993-09-07 | |||
| JP2002147546A | 2002-05-22 | |||
| JP2007024072A | 2007-02-01 |
Attorney, Agent or Firm:
ISHIDA Yoshiki (JP)
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