Patent ID: 8016685

Claim:
A power transmission apparatus characterized by comprising: a driving rotary body which is rotated by power from a driving device; a driven rotary body including a driven rotary member attached to a rotating shaft of a driven device and a holding plate attached to said driven rotary member; a damper mechanism including a cylindrical elastic member attached to said driving rotary body and a connecting member which is engaged in said elastic member to be movable forward/backward; at least one rotation transmission member to which said connecting member is attached and which functions to transmit a rotation of said driving rotary body to said driven rotary body, said rotation transmission member having a fixing portion which is connected through said damper mechanism to said driving rotary body, a first connecting portion extending from said fixing portion and elastically deformable in the thickness direction, and a second connecting portion extending from a distal end of said first connecting portion and separably connected to said driven rotary body-and a preset load setting member mounted between said driven rotary body and said connecting member to elastically deform said first connecting portion of said rotation transmission member, thus applying a preset load; wherein said preset load setting member is fixed to said connecting member together with said rotation transmission member and includes a regulating portion which regulates elastic restoration of said first connecting portion of said rotation transmission member, and a preset load is applied to said first connecting portion of said rotation transmission member when said regulating portion is pressed against said driven rotary body.