A torque limiter includes a driving part defining a receiving chamber, an axle part apart inserted in the receiving chamber, and an elastic module including first and second elastic parts frictionally coupled to an outer circumference of the axle part. An inner sidewall of the receiving chamber is radially concaved outward to form two blocking grooves. The first elastic part has one end designed with a first blocking portion and the other end designated as a first end portion. The second elastic part has one end designed with a second blocking portion and the other end designated as a second end portion resisting against the first end portion. The blocking portions are located in the blocking grooves respectively. When the driving part is rotated clockwise/counterclockwise, a torque is produced by friction sliding between the first/second elastic part and the axle part.