Intermittent driving device and image forming apparatus

An intermittent driving device comprising:

• a shaft;
• an input gear that is rotatably supported by the shaft;
• an output gear that is rotatably supported by the shaft;
• a connecting member that is urged and movably supported in an axial direction and that rotates in a state of being connected to the input gear, a state of the connecting member being switched between a state of being connected to the output gear and a state of being disconnected from the output gear;
• a moving member that is supported in such a manner as to be capable of moving together with the connecting member;
• a cam member that is supported by the shaft in such a manner as to be capable of rotating as a result of receiving a driving force of a drive gear and that has a cam surface having a shape that causes the moving member to move in the axial direction and guides the connecting member into the state of being connected to the output gear or the state of being disconnected from the output gear;
• a rotation-applying member that applies a force that causes the cam member to rotate around the shaft to the cam member;
• and
• a switching member that switches between a state where a rotational operation of the cam member is hindered and a state where the rotational operation is allowed.