| 摘要 |
A safety protection device for a speed changing device of a mixer is provided with a control unit on an operating rod assembly, and a tact switch is used in combination with the control unit. When using the operating rod assembly to perform gear shift, the user can feel whether the gear has been shifted to the correct position based on position change of the control unit with respect to the tact switch. During gear shift, the tact switch will turn off the power to the motor controller to stop the motor, so that gear shift operation can be performed more smoothly without interference with the motion transmission parts of the mixer, and consequently, the life of the mixer can be extended. |
