Rotation transmission mechanism and damper device

A rotation transmission mechanism structured to transmit power from a drive source, the rotation transmission mechanism comprising:

• a plurality of rotation transmission members, the plurality of rotation transmission members comprising a drive wheel and a driven wheel;
• and
• an urging member structured to urge the driven wheel in a reverse direction to a rotational direction by power of the drive source;
• wherein the drive wheel and the driven wheel comprise engagement parts structured to transmit turning of the drive wheel to the driven wheel;
• wherein the drive wheel comprises a cam face forming part on which the engagement part of the driven wheel is slid at a rotational position where the engagement parts are not engaged with each other;
• and
• wherein a brake member structured to generate a rotation load is disposed in a range, on an upstream side of a power transmission path, including the drive wheel with respect to the driven wheel in the power transmission path transmitting the power of the drive source.