Power transmission mechanism

Abstract

A power transmission mechanism includes a first rotary body having an engagement recess, and a second rotary body, which is coaxial to the first rotary body, and an engagement projection. The position of at least one of the engagement recess and the engagement projection changes with respect to the associated rotary body. An elastic member elastically deforms in accordance with force based on a transmission torque during power transmission between the first rotary body and the second rotary body. The elastic deformation of the elastic member permits the position of at least one of the engagement recess and the engagement projection to be changed. Sliding of the engagement projection in the engagement recess permits relative rotation of the rotary bodies within a predetermined angle range.

Dependencies are inferred from the claim text.