Flanging structure of toggle plate, and manufacturing method thereof

The invention relates to the technical field of flanging structures, and discloses a flanging structure of a toggle plate, and a manufacturing method thereof. The flanging structure comprises a toggleplate body, a flanging part and a bent part, the toggle plate body is provided with a first root part and a second root part, and the bending part is arranged on the toggle plate body; the two ends of the bent part extend to the first root part and the second root part respectively, the first root part and the second root part are each provided with an arc-shaped crack-arresting notch, one end ofeach crack-arresting notch is located on the first root part or the second root part, and the other end of each crack-arresting notch is located on the first root part or the second root art; and theother end of the crack-arresting notch is located on the bent part, the flanging part is arranged on the toggle plate body through the bent part, and an included angle is formed between the plane where the toggle plate body is