The purpose of this study is to prevent pin from disengaging from the device,In combination with the groove (3) formed around the periphery of the card issuing (2), a device preventing the pin from detaching is arranged to prevent the card issuing (1),A fixing port (5) is adhered to the slot (3) formed in the card issuing (2) and the card issuing (1) is pressed, so the card issuing (1) does not fall off automatically,When pulling out the card, the fixed ball (5) shall be set up to separate it from the slot (3) on the card (2), and then the card can be pulled out after grasping the slot of the card head, so the card can be simply pulled out even if there is no other tool.
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