Motion state judging assembly and toothbrush

The invention provides a motion state judging assembly and a toothbrush, and relates to the field of toothbrush. The assembly comprises at least one switch assembly and a signal processing circuit. The switch assembly comprises a receiving cavity, a ball and a switch pin. The ball is received in the receiving cavity and can move in the receiving cavity. A switch pin is arranged on that accommodating cavity, and the ball can trig the switch pin during the movement. The signal processing circuit is connected to the switch pins of the switch assembly to convert the triggered state of the switch pins into an electrical signal. Compared with the prior art, the motion state judging component provided by the invention has simple structure, and reduces the processing process requirements and processing cost. There is no need to re-calibrate the ball after welding, the welding point is far away from the ball, and the generated tension will not affect the movement of the ball, so the calibrationprocess can be canceled,