Title:
SPEED REDUCER, DEVELOPING DEVICE, AND IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP2020070823
Kind Code:
A
Abstract:
To provide a small-sized speed reducer capable of obtaining a high speed reduction ratio.SOLUTION: A speed reducer 41 includes: an input shaft 51 rotated by receiving driving force; a fixed inner gear 53 coaxially fixed on the input shaft 51; an output inner gear 55 which is rotatably disposed coaxially with the fixed inner gear 53, and has a different number of teeth from the fixed inner gear 53; and a planetary two-stage gear 57 which is supported by the input shaft 51 so as to rotate about an eccentric shaft 61 parallel with the input shaft 51, and has a large gear 81 and a small gear 83 respectively meshed with the fixed inner gear 53 and the output inner gear 55, and in which difference in a number of teeth between the large gear 81 and the small gear 83 is equal to different in a number of teeth between the fixed inner gear 53 and the output inner gear 55. By rotations of the input shaft 51, the large gear 83 meshes with the fixed inner gear 53, the planetary two-stage gear 57 revolves while rotating, and the small gear 83 rotates the output inner gear 55.SELECTED DRAWING: Figure 4
Inventors:
ISHIDA HIROTAKA
Application Number:
JP2018203190A
Publication Date:
May 07, 2020
Filing Date:
October 29, 2018
Export Citation:
Assignee:
KYOCERA DOCUMENT SOLUTIONS INC
International Classes:
F16H1/32; G03G15/08; G03G21/16
Domestic Patent References:
| JP2006171200A | 2006-06-29 | |||
| JP2010151196A | 2010-07-08 | |||
| JP2004340191A | 2004-12-02 | |||
| JP2004101623A | 2004-04-02 |
Attorney, Agent or Firm:
Shuichi Kitamura