The subject innovation relates to an injury value relief device when the car side impact, rear door out panel hook-one buffer in contact with the inner surface of the side-out panel 120 in the inner panel (110) coupled to a 100 member (200 ) it is fixed and, in the side-out panel 120 and the hook guide 220, a groove 201 of the hook-one buffer member 200 which takes a fixed, the hook-one shock-absorbing member 200 is a rubber material cushion the groove has a structure 201 is formed in the intermediate portion the metal hook 210 is embedded.; The present design has the advantage of reduced injury value of the side impact reinforcement is a critical point during a vehicle side collision.
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