Title:
DIFFERENTIAL REDUCTION GEAR
Document Type and Number:
WIPO Patent Application WO/2018/168764
Kind Code:
A1
Abstract:
[Problem] To increase the coaxiality between an input shaft and a casing and assemble the input shaft with precision. [Solution] A differential reduction gear 1A-1C comprising an output shaft 9 supported within a casing 2 via a cross-roller bearing 8, an internally toothed gear 4 provided within the casing 2, an input shaft 12 that coaxially passes through the output shaft 9 and the internally toothed gear 4 and that is supported via ball bearings 10, 11, an externally toothed gear 17A-17C that is externally fitted via a needle bearing 15 on an eccentric part 14A-14C provided to the input shaft 12 and that meshes with the inner side of the internally toothed gear 4, and a carrier 24 that is linked to the output shaft 9 via pins 22, 2… loosely inserted into the externally toothed gear 17A-17C, the output shaft 9 being rotated via the pin 22 at a prescribed reduction ratio due to the rotation of the input shaft 12 causing the externally toothed gear 17A-17C to move eccentrically relative to the internally toothed gear 4; wherein an outer race 10a of the ball bearing 10 is supported by the casing 2 and the carrier 24.
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Inventors:
HARAGUCHI KUNIHIRO (JP)
Application Number:
PCT/JP2018/009493
Publication Date:
September 20, 2018
Filing Date:
March 12, 2018
Export Citation:
Assignee:
NISSEI CORP (JP)
International Classes:
F16H1/32; F16C35/067; F16H57/021; F16H57/04; F16J15/3204
Foreign References:
| JP2888673B2 | 1999-05-10 | |||
| JP2008095794A | 2008-04-24 | |||
| JP2011117577A | 2011-06-16 | |||
| JPH0874942A | 1996-03-19 | |||
| JPH102327A | 1998-01-06 | |||
| JP2008008412A | 2008-01-17 |
Attorney, Agent or Firm:
ISHIDA Yoshiki (JP)
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