Motor speed regulator with high assembly reliability

According to the motor speed regulator with high assembling reliability, the shell is designed to be composed of the first shell body and the second shell body, namely, the shell is of a structure formed by splicing the two half shell bodies, the first shell body and the second shell body are assembled in a clamped mode through the buckles and the buckle grooves, and the limiting plates are additionally arranged on the half shell bodies provided with the buckle grooves. After the buckle and the buckle groove are assembled, the other side, opposite to the buckle area matched with the buckle groove, of the buckle area can be blocked by the limiting plate, so that the buckle area is blocked on the rear side of the buckle area on the buckle due to the limiting plate when the motor speed regulator falls off in the using process, and the buckle is firmly clamped in the buckle groove; when the motor speed regulator is assembled, the situation that the shell of the motor speed regulator vibrates inwards, the buckle r