Title:
DIFFERENTIAL REDUCTION GEAR
Document Type and Number:
Japanese Patent JP2019056478
Kind Code:
A
Abstract:
To reduce the possibility that a restriction part, such as a washer, for restricting axial movement of a roller causes damage to an input shaft.SOLUTION: A differential reduction gear 1 includes: an internal gear 4; an input shaft 12 which coaxially penetrates through the internal gear 4; multiple needles 16 which are respectively mounted at multiple eccentric parts 14 provided at the input shaft 12; multiple external gears 17 which are respectively installed at exterior parts of the eccentric parts 14 through the multiple needles 16 and contact with the internal gear 4 at the inner side to engage therewith; and an output shaft 9 including pins 22 which are loosely inserted into the respective external gears 17. A restriction part (a washer 26) which restricts axial movement of the needles 16 are provided at each external gear 17 while having a radial gap S between itself and an outer surface of the eccentric part 14.SELECTED DRAWING: Figure 1
Inventors:
HARAGUCHI KUNIHIRO
Application Number:
JP2017182820A
Publication Date:
April 11, 2019
Filing Date:
September 22, 2017
Export Citation:
Assignee:
NISSEI CORP
International Classes:
F16H1/32; F16C19/46; F16C19/50
Domestic Patent References:
| JP2013061038A | 2013-04-04 | |||
| JP2017044319A | 2017-03-02 | |||
| JP2016151317A | 2016-08-22 | |||
| JP2015036581A | 2015-02-23 |
Attorney, Agent or Firm:
Yoshiki Ishida
Kyoichi Ueda
Kyoichi Ueda