Patent ID: 7472920
Filing Date: 2009-01-06
Classification: A61G

Abstract:
1. A retractable bed mechanism comprising a base seat having an arch-shaped guiding slot with one upper end extended to a front side of the base seat; a first driving means perpendicularly mounted to the base seat and having a first retractable rod which retracts upwards; a second driving means swing-mounted at a bottom end thereof to the base seat and having a second retractable rod which retracts upwards; a swinging rod having an upper end swing-mounted to an upper end of the first retractable rod and a bottom end thereof being extended to the arch-shaped guiding slot and moving along the arch-shaped guiding slot; a first bottom rod having a front end swing-mounted to the swinging rod; a second bottom rod having a rear end swing-mounted to an intersection between the swinging rod and the first bottom rod; a sitting pad having a front end swing-mounted to an upper end of the second retractable rod, and having a middle section being swing-mounted to the upper end of the first retractable rod; a back having a bottom end swing-mounted to a rear end of the first bottom rod, and having a bottom section being swing-mounted to a rear end of the sitting pad; and a leg seat having an upper end provided with a pivot section and a top and bottom position of the pivot section provided with a top pivot hole and a bottom pivot hole, wherein the top pivot hole is provided at the front end of the sitting pad, and the bottom pivot hole is provided at a front end of the second bottom rod.