In the papar, it changes its"buckle"structurt on the basis of common key switch, achieves automatic locking function and does not increase the cost.

多位组合式按键开关被广泛应用于各种家用电器，本课题在普通按键开关的基础上，改变其“扣板”的结构，实现了自动锁定功能，且不需增加成本。