Potentier

摘要

Problem to suppress occurrence of allophone.The rubber member 80 is provided between the insertion portion 71 and the inner peripheral surface of the insertion hole 61. As the torque changes, each of the insertion portions 71 relaxes the impact force at the inner peripheral surface of each insertion hole 61 repeatedly with respect to the position of the arm 33 located in the rotational direction of the arm 33 and in the position opposite to the rotational direction of the arm 33.Diagram