Circuit board is prevented tearing by POS machine

The utility model discloses a circuit board is prevented tearing by POS machine, circuit board is prevented tearing by POS machine include PET thin layer and alarm device, PET thin layer is through preventing that it has the trigger circuit who is used for triggered alarm device to tear the printing of printing ink layer, the trigger circuit wire is snakelike trend, and trigger circuit prints hasthe insulating layer that is used for isolated trigger circuit, the insulating layer coating can be pasted in the viscose layer of POS machine intraware, trigger circuit is torn back line release at PET thin layer, in case tear POS machine intraware prevent tearing protection circuit board, triggered alarm device, protection POS machine intraware. 本实用新型公开了POS机防撕电路板，POS机防撕电路板包括PET薄膜层和报警装置，所述PET薄膜层通过防撕油墨层印刷有用于触发报警装置的触发电路，所述触发电路导线呈蛇形走向，触发电路印刷有用于隔绝触发电路的绝缘层，所述绝缘层涂覆可粘贴于POS机内部组件的粘胶层，所述触发电路在PET薄膜层被撕开后线路断开，旦撕开POS机内部组件的防撕保护电路板，触发报警装置，保护POS机内部组件。