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Title:
POWER TRANSMISSION DEVICE AND IMAGE FORMING DEVICE EMPLOYING THE POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2001141022
Kind Code:
A
Abstract:

To provide both a power transmission device capable of controlling the rotation of a teeth missing gear by means of both a simple constitution without using a solenoid and an image forming device using the aforesaid power transmission device capable of controlling whether power is transmitted or not by the use of the teeth missing gear.

Idling gears 2, 3, 4 and 5 are meshed with a motor gear 1, and the idling gear 4 is rotatingly supported by a lever 8 capable of being rotated around the shaft 7 of the idling gear 3 so as to be freely rotated. Let the lever 8 be rotated by reversely rotating the motor gear 1 utilizing force acting on the teeth surfaces of the idling gear 4 between the idling gears 4 and 5 so as to let the pawl part 8a of the lever 8 be separated from the locking part 19 of a teeth missing gear 6. It is characteristic that the teeth missing gear 6 is so preliminarily rotated by means of a tension spring 9 as to let the idling gear be meshed with a gear 17, so that the gear 7 can be rotated by half with the motor gear 1 normally rotated.


Inventors:
MIYAMOTO ITSUTAKA
WATANABE KENJI
OHATA SEIJI
Application Number:
JP1999000320663
Publication Date:
May 25, 2001
Filing Date:
November 11, 1999
Export Citation:
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Assignee:
CANON KK
International Classes:
G03G15/16; F16H27/08; G03G15/00; (IPC1-7): F16H27/08; G03G15/00
Attorney, Agent or Firm:
中川 周吉 (外1名)