Torque rod

A torque rod comprising:

• a first elastic bush connected to a vibration generator;
• a second elastic bush connected to a vibration receiver;
• an actuator installed between the first elastic bush and the second elastic bush, the actuator being configured to attenuate and absorb an input vibration by causing a cylindrical movable element to reciprocate so as to move close to or move away from the first elastic bush and the second elastic bush in response to the input vibration;
• and
• a case body including a first accommodation portion inside which the first elastic bush is accommodated, a second accommodation portion inside which the second elastic bush is accommodated, and a third accommodation portion installed between the first accommodation portion and the second accommodation portion and inside which the actuator is accommodated,
• wherein the actuator includes a support shaft extending along a reciprocating direction of the movable element inside the movable element,
• wherein in the case body, any one of a first partition wall between an interior of the first accommodation portion and an interior of the third accommodation portion and a second partition wall between an interior of the second accommodation portion and the interior of the third accommodation portion has a communication hole that allows the interiors of both the accommodation portions to communicate with each other, and a whole area of the other partition wall is closed,
• wherein in the communication hole, a counterbore is formed in an end portion on a side opposite to the third accommodation portion,
• wherein the torque rod further comprises a bolt that is inserted into the communication hole, and that has a head portion accommodated in the counterbore, and
• wherein the bolt is screwed into the support shaft or the communication hole, the head portion is pressed against an annular flat surface which faces a side opposite to the third accommodation portion on an inner surface of the counterbore, and the support shaft is pressed against the partition wall.