Back clamp device

The utility model provides a back clamp device including a back clamp body and at least two buckling members arranged on the back clamp, the at least two buckling members buckle a terminal on the back clamp body through cooperation, each buckling member includes at least one adjustable buckling member, an elastic member is arranged on the adjustable buckling member, and the elastic member makes the adjustable buckling member to rebound. When the clamp device needs to clamp a terminals in one size, only the relative position of the adjustable buckling members and the back clamp body needs to be adjusted to make the distance between the at least two buckling members satisfy the size of the terminal, and the adjustable buckling members rebound under the effect of the elastic members to clamp the terminal after the terminal is placed between the buckling members. The back clamp device can flexibly clamp terminals in different sizes, and people don't have to customize different back clamp devices for the terminals in different sizes, thereby reducing the customization cost and bringing a lot of convenience for users. In addition, the back clamp device provided is free of fixing members and fixing holes, and the adjustment of the adjustable buckling members are convenient and fast.