Patent ID: 7497513

Claim:
A buffer cushion ( 1 ) for automobile seats, comprising: a main air chamber ( 2 ) having a size corresponding to the sizes of the automobile seats; an auxiliary air chamber ( 3 ) having a relatively smaller size than the main air chamber ( 2 ); an interconnecting chamber ( 4 ) formed integrally with the main air chamber ( 2 ) and auxiliary air chamber ( 3 ) for communicating the main air chamber ( 2 ) and the auxiliary air chamber 3 with each other to allow air injected into the buffer cushion to freely move between the main air chamber ( 2 ) and the auxiliary air chamber ( 3 ); and adjusting means ( 5 ) that is mounted on the auxiliary air chamber ( 3 ) for buffering the impact applied to the main air chamber ( 2 ) and adjusting a buffering force when the impact is applied to an automobile seat in upward and downward directions, wherein the adjusting means ( 5 ) includes: a casing ( 6 ) for accommodating the auxiliary air chamber ( 3 ) therein, the casing having an adjustable slit ( 11 ) formed thereon; a pressuring plate ( 7 ) disposed at the inside of the casing ( 6 ) and axially mounted at one side thereof to the casing by means of a hinge pin ( 8 ); and a plate spring ( 9 ) mounted on the pressuring plate ( 7 ) for pressurizing the pressuring plate ( 7 ) at a predetermined spring elastic coefficient, the plate spring having an adjusting bolt ( 10 ) fixed to one side thereof through the adjustable slit ( 11 ) to be moved forward and backward along the adjustable slit.