Application of Hall Switch in Electric Pencil Sharpener


The electric pencil sharpener is used for automatic cutting of pencils. The current electric pencil sharpener has the ability to adjust the thickness of the pen tip, but the thickness adjustment of the electric pencil sharpener on the market is mechanical.SwitchThis design has a short life and occupies a large space.

The invention relates to a pencil thickness adjusting mechanism of an electric pencil sharpener, comprising a main machine, which is internally provided with a tool holder, a pen-feeding mechanism, a tool mounted on the tool holder, a power component for driving the tool and the pen-feeding mechanism, and a control component for controlling the switch of the power component. The control component comprises a control main board and a thickness adjusting dial with at least two gears, an electric control box is telescopically arranged up and down at the bottom of the linkage. The electric control box is provided with a Hall switch. The signal output terminal of the Hall switch is connected to the signal input terminal of the control main board, and the control main board turns on or off the power component through the Hall signal.

Due to the different protrusion heights of the two magnets, when the pen tip falls, the Hall switch is driven to fall by the linkage. At this time, if the high magnet on the thickness adjustment dial is facing the Hall switch, the Hall switch senses the magnet and outputs a signal to the control main board. The control main board controls the power component to stop pen feeding. At this time, the pen cutting is finished. If you want to obtain a thinner pen tip, you only need to rotate the dial, make the low-position magnet face the Hall switch. At this time, the power assembly continues to convey the pen downward. When the Hall switch senses the magnet again, it stops working. Therefore, the pen tip in this case is thinner to adjust the pen tip. The thickness.

 

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Application of Hall Switch in Electric Pencil Sharpener

The electric pencil sharpener is used for automatic cutting of pencils. The current electric pencil sharpener has the ability to adjust the thickness of the pen tip. However, the thickness adjustment of the electric pencil sharpener on the market all uses mechanical switches to collect the signal source. This design has a short life and occupies a large space.