| 摘要 |
<p>A hinge assembly (30) for a backrest (16) of a rear seat (12) of a vehicle in which the backrest can pivot between a substantially upright position and a substantially horizontal position and in which the backrest can be latched at one edge (24) in the substantially upright position, the hinge assembly comprising a first member (32) securable to the opposed edge (18) of the backrest; a second member (34) securable to a body portion (36) of the vehicle; a third member (38) positioned between the first member and the second member; a fourth member (40) positioned adjacent the third member and below the first member; a first pin (56) secured to the third member about which the first member can pivot; a second pin (58) secured to the second member about which the third member can pivot; a third pin (60) secured to the third member about which the fourth member can pivot; and a fourth pin (62) secured to the second member about which the fourth member can pivot; wherein the axes (A,B,C,D) of the pins are substantially parallel; wherein the edge of the first member directed towards the fourth member has teeth (50); and wherein the edge of the fourth member directed towards the first member has teeth (46); the relative positioning of the pins being such that when a force is applied to the first member in a direction which attempts to move the backrest to the horizontal position whilst the backrest is latched in the upright position, the first pin moves to pivot the third member about the second pin, whereby the third pin moves to pivot the fourth member about the fourth pin to bring the teeth on the first and fourth members into engagement to lock the hinge assembly. <IMAGE> <IMAGE></p> |
