| 摘要 |
Disclosed is a four-link door hinge capable of self-closing in a buffered way, comprising a hinge base (1), a hinge cup (2), a four-link door hinge formed by hinging a support link arm (3) with an elastic link arm (4), and a damper (5) for buffering the self-closing of the door hinge, wherein the support link arm (3) has cross arms (31) on both sides hinged with the hinge cup (2); the damper (5) is slidably mounted in the hinge cup (2), in the swing direction of the support link arm (3), between the cross arms (31) on both sides; the end of a piston rod (51) of the damper (5) bears against an inner wall (21) of the hinge cup (2) adjacent to the hinged side, and a cylinder (52) of the damper (5) is provided with a boss (52.1) on either side, the boss having a face facing towards the bottom of the cylinder (52); and the cross arms (31) on both sides form projections (31.1) abutting against the faces of the bosses (52.1). The four-link door hinge has a simple structure, facilitates the assembly of the damper, and can improve the production efficiency; and owing to the reasonable structure, the door hinge has a prolonged service life. |
