US 12,411,447 B2
Sheet conveyance device and image forming apparatus
Kazutoshi Nakamura, Kuwana (JP); and Tomonori Watanabe, Ichinomiya (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Nov. 17, 2022, as Appl. No. 18/056,369.
Claims priority of application No. 2021-192563 (JP), filed on Nov. 26, 2021.
Prior Publication US 2023/0166927 A1, Jun. 1, 2023
Int. Cl. G03G 15/00 (2006.01)
CPC G03G 15/6529 (2013.01) [B65H 2403/48 (2013.01); B65H 2403/50 (2013.01); B65H 2403/72 (2013.01); B65H 2601/11 (2013.01); B65H 2601/325 (2013.01); B65H 2801/27 (2013.01); G03G 2221/1657 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sheet conveyance device comprising:
a motor;
a roller configured to convey a sheet; and
a one-way clutch configured to transmit a driving force from the motor to the roller, the one-way clutch including:
a fixed shaft extending in an axial direction;
an input gear rotatably supported by the fixed shaft, the input gear being rotatable by receiving the driving force from the motor;
an output gear rotatably supported by the fixed shaft, the output gear being coupled to the roller and configured to transmit the driving force to the roller; and
a transmission gear supported by the fixed shaft, the transmission gear being movable in the axial direction between a first position and a second position in a state where the transmission gear engages with the input gear, the first position being a position at which the transmission gear is separated from the output gear, the second position being a position at which the transmission gear is coupled to the output gear,
the input gear being configured to:
by rotating in a first direction by receiving the driving force from the motor, move the transmission gear from the first position to the second position and transmit the driving force in the first direction to the output gear via the transmission gear; and
by rotating in a second direction opposite the first direction by receiving the driving force from the motor, move the transmission gear from the second position to the first position and cancel transmission of the driving force to the output gear,
the transmission gear being configured to, when the output gear rotates in a state where the transmission gear is located at the first position, not be coupled to the output gear,
wherein the fixed shaft is configured to:
support the transmission gear located at the first position in a state where a first sliding resistance of a particular magnitude acts between the fixed shaft and the transmission gear; and
support the transmission gear located at the second position in a state where a second sliding resistance acts between the fixed shaft and the transmission gear, the second sliding resistance being smaller than the first sliding resistance.