Card clamp

1. A card clamp, comprising a first clamping plate, a second clamping plate, a connecting belt, a first metal connector and a second metal connector;

wherein the first clamping plate is provided with a first through groove, a first side surface and a second side surface; the first side surface and the second side surface are parallel to each other; the first through groove penetrates through the first side surface and the second side surface; the second clamping plate is provided with a second through groove, a third side surface and a fourth side surface; the third side surface and the fourth side surface are parallel to each other; the second through groove penetrates the third side surface and the fourth side surface; the connecting belt has elasticity; the connecting belt penetrates successively through the first through groove and the second through groove; a first end of the connecting belt is fixedly connected with a fixed end of the first metal connector; a second end of the connecting belt is fixedly connected with a fixed end of the second metal connector; a movable end of the first metal connector is connected with a movable end of the second metal connector; and the first metal connector and the second metal connector are located in the second through groove.

2. The card clamp of claim 1 , wherein the first metal connector comprises a first bending arm, a second bending arm and a first plate; one side of the first bending arm is fixedly connected with a first side of the first plate; one side of the second bending arm is fixedly connected with a second side of the first plate; the first side of the first plate and the second side of the first plate are parallel to each other; the other side of the first bending arm is connected with the other side of the second bending arm; and the first metal connector is fixedly connected with the first plate;

the second metal connector comprises a third bending arm, a fourth bending arm and a second plate; one side of the third bending arm is fixedly connected with a first side of the second plate; one side of the fourth bending arm is fixedly connected with a second side of the second plate; the first side of the second plate and the second side of the second plate are parallel to each other; the other side of the third bending arm is connected with the other side of the fourth bending arm; and the second metal connector is fixedly connected with the second plate.

3. The card clamp of claim 2 , wherein bending U-shaped hooks are arranged on the first plate and the second plate; and the bending U-shaped hook of the first plate is clamped with the bending U-shaped hook of the second plate.

4. The card clamp of claim 2 , wherein the first bending arm and the second bending arm are provided with first square through holes; and edges of the first square through holes are provided with first sharp point bending hooks bent toward the first plate.

5. The card clamp of claim 2 , wherein the third bending arm and the fourth bending arm are provided with second square through holes; and edges of the second square through holes are provided with second sharp point bending hooks bent toward the second plate.

6. The card clamp of claim 1 , wherein the first clamping plate is provided with a fifth side surface; the second clamping plate is provided with a sixth side surface; the fifth side surface is connected with the first side surface and the second side surface; the sixth side surface is connected with the third side surface and the fourth side surface; and the fifth side surface and the sixth side surface are located on the same side and provided with a groove position.