US Patent 11986935 Crimping pliers

The present disclosure provides self-adaptive laborsaving crimping pliers including a connecting handle, a movable handle, and a pliers head arranged on one end of the connecting handle and the movable handle. The connecting handle is bifurcated to form connecting arms rotatably arranged on the pliers head and elastic support arms. The connecting arms forms a linkage between the connecting handle and the pliers head. The movable handle is bifurcated to form movable connecting arms and elastic driving arms. The movable connecting arms are rotatably arranged on the pliers head and forms a linkage between the movable handle and the pliers head. The elastic driving arms are rotatably arranged on the elastic support arms to make the movable handle rotatably connect with the connecting handle. Limiting portions are arranged on the elastic support arms. A tension spring is arranged between the limiting portions and the movable handle.