| 摘要 |
An automatic tensioner includes a base, a rotary member to which a pulley around which a belt is wound can be attached, a coil spring including one end locked on the base and the other end locked on the rotary member, an elastic element including one end locked on one of the rotary member and the base and the other end which is a free end and extending along an inner circumferential surface of the other of the rotary member and the base, and a friction member connected so as to be brought into contact with the inner circumferential surface, wherein the coil spring is disposed in such a state that the coil spring is compressed in an axial direction and the friction member is pressed against the one of the rotary member and the base by a repulsive force attempting to expand in an axial direction. |
