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Title:
REDUCTION GEAR, IMAGE CARRIER DRIVING DEVICE, AND IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP2010216533
Kind Code:
A
Abstract:

To provide a reduction gear for transmitting the speed-reducing drive to an image carrier while suppressing an increase in its manufacturing cost, suppressing the frictional displacement of a drive transmitting member in the rotationally axial direction, and more reliably suppressing a variation of a rotating speed, and to provide an image carrier driving device and an image forming device.

The reduction gear includes a thrust restricting means 88 for thrusting a driving shaft 86 toward the rotational center of the drive transmitting member 85, the thrust restricting means 88 having a restricting member 87a for restricting the displacement of the driving shaft 86 in the rotating direction of the drive transmitting member 85, and an axial movement restricting member for restricting the movement of the driving shaft 86 in the rotationally axial direction. The axial movement restricting means can be step parts 85c formed at two axially adjacent positions on the abutment peripheral face of the driving shaft 86 on which the circumferential face of the drive transmitting member 85 abuts so that at least the edges on the radial outside of both side faces of the drive transmitting member 85 contact them, respectively.


Inventors:
Iwata, Nobuo
Miyawaki, Katsuaki
Matsuda, Hiromichi
Komatsu, Makoto
Application Number:
JP2009000062351
Publication Date:
September 30, 2010
Filing Date:
March 16, 2009
Export Citation:
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Assignee:
RICOH CO LTD
International Classes:
F16H13/04; F16H57/02; F16H57/04; G03G15/00
Domestic Patent References:
JP2004183784A2004-07-02
JPS56127850A1981-10-06
JPH04370447A1992-12-22
JP2005256950A2005-09-22
JPH05231517A1993-09-07
Attorney, Agent or Firm:
黒田 壽