Device for automatic forward moving of car rear row seat in rear-end collision

The invention discloses a device for automatic forward moving of a car rear row seat in rear-end collision. The device is characterized in that sliding rails are arranged below the car rear row seat,and sliding legs are mounted on the lower portion of the car rear row seat, can be mounted on the sliding rails and move on the sliding rails; compression springs are arranged between the sliding rails and a car trunk section, tying ropes are arranged between the compression springs in a penetrating mode, one ends of the compression springs are connected to the sliding legs, and the other ends ofthe compression springs are connected to the front end of a car trunk; one ends of the tying ropes are connected to the sliding legs, the other ends of the tying ropes are connected to the rear end ofthe car trunk, the tying ropes are in tense states, and the springs are in compressed states; and annular blade cavities and vibrating sensing type spring clamp locks are arranged at the connecting positions of the tying ropes