Brush handle

The utility model discloses a brush handle. An existing brush handle only performs signal reminding when a carbon brush is exhausted, and does not take any protecting measure. The technical solution of the brush handle is characterized in that: the brush handle comprises a base, mounting bases, a limit switch and a carbon brush base. The mounting base is internally provided with an elastic member which is connected with the carbon brush base. The carbon brush base is provided with the carbon brush. Each mounting base is provided with a through groove. The stroke switch is arranged outside the through groove. The carbon brush base is provided with a projected strip which matches with the limit switch. Two mounting bases are arranged and are symmetrically arranged at two ends of the base. The mounting bases are hinged with the base. The mounting bases are provided with tensioning devices which can make the tail parts of the two mounting bases approach each other. The other side of the base, which corresponds wi