Telescopic bar

The utility model relates to a telescopic bar, including sleeve pipe A, sleeve pipe B, sleeve pipe C, motor, drive mechanism, sleeve pipe A in be equipped with sprocket A, sprocket B, chain A and theA that cuts somebody's hair, sprocket A pass through drive mechanism and be connected with the motor, rotate under motor drive to drive the motion of chain A, and then B is flexible to drive the A push sleeve pipe of cutting somebody's hair, sleeve pipe A in be equipped with the rack along its axial, sleeve pipe B in be equipped with sprocket C, sprocket D, chain B and the B that cuts somebody's hair, sprocket C locate sleeve pipe B's rear portion through the pivot, sprocket C fixed mounting is in the pivot, the lower extreme of pivot passes in sleeve pipe B lateral wall gets into sleeve pipeA, the lower fixed mounting of serving of pivot has the gear, wheel and rack 16 meshing. This telescopic bar material is easy, need not more processing, and expansion/contraction speed is fast, to thestrong adaptability of env