Rotation transmission unit, replacement unit, developer container and image forming apparatus

摘要

A rotation transmission unit includes a driving unit that provides a rotational power; a rotation transmission member that is rotated due to reception of the rotational power transmitted from the driving unit; a rotation member that is rotated due to reception of a rotation of the rotation transmission member; a locking groove that is formed at one of the rotation transmission member and the rotation member; and a locking member that is arranged at the other of the rotation transmission member and the rotation member. A surface of the locking member on the locking groove side is flat.

主权项

1. A rotation transmission unit, comprising:
a driving unit that provides a rotational power; a rotation transmission member that is rotated due to reception of the rotational power transmitted from the driving unit; a rotation member that is rotated due to reception of a rotation of the rotation transmission member, wherein the rotation transmission member includes
a fitting hole,a pair of locking members that are arranged on the fitting hole,latch pawls that are provided on and are integrally formed with corresponding one of the pair of locking members on a downstream side of an insertion direction of the rotation member, andfirst flat surfaces that each extends on and are integrally formed with corresponding one of the pair of locking members on an upstream side of the insertion direction of the rotation member, the rotation member includes
a fitting part that is to be fitted in the fitting hole,a pair of locking grooves, andsecond flat surfaces that each face corresponding one of the first flat surfaces and corresponding one of the latch pawls on the pair of locking members of the rotation transmission member, each of the locking grooves being formed on corresponding one of the second flat surfaces, the latch pawls and the locking grooves are formed to face each other, a tip part of the fitting part has an approximately rectangular shape and includes
the second flat surfaces that are opposite from each other, andtwo contact surfaces that are flat and formed perpendicularly with the second flat surfaces, ribs are provided on the rotation transmission member and each face corresponding one of the two contact surfaces of the fitting part, and each of the ribs has a flat end that surface-contacts with the corresponding one of the two contact surfaces of the fitting part.