| 摘要 |
A DOUBLE-SIDED RECLINING APPRATUS COMPRISES OUTSIDE AND INSIDE RECLINING DEVICES, EACH COMPRISING A BASE AND AN ARM HAVING AN INNER TOOTHED PORTION, A PIVOTAL SHAFT THROUGH WHICH THE ARM IS ROTATABLY SUPPORTED ON THE BASE, AND A SET OF CAM AND TOOTHED BLOCK IN CAM-CONNECTION. THE CAM AND THE TOOTHED BLOCK COOPERATE @WITH EACH OTHER TO CAUSE MESHING/UNMESHING ACTION OF THE RECLINING APPARATUS. THE CAM HAS A LOOKING-ACTION CAM-PROFILE SURFACE PORTION AND AN UNLOCKING-ACTION CAM-PROFILE SURFACE PORTION. WHEREAS THE TOOTHED BLOCK HAS A LOOKING-ACTION CAM-CONTOUR SURFACE PORTION AND AN UNLOCKING-ACTION CAM-CONTOUR SURFACE RESPECTIVELY BROUGHT INTO CAM-CONNECTION WITH THE LOCKING-ACTION CAM-PROFILE SURFACE PORTION AND THE UNLOCKING-ACTION CAM-PROFILE SURFACE PORTION. IN THE LOCKED STATE, THE RELATIVE DISTANCE BETWEEN THE UNLOCKING-ACTION CAM-PROFILE SURFACE PORTION AND THE UNLOCKING-ACTION CAM-CONTOUR SURFACE PORTION INCLUDED IN THE INSIDE RECLINING DEVICE IS SHORTER THAN THE RELATIVE DISTANCE BETWEEN THE UNLOCKING-ACTION CAM-PROFILE SURFACE PORTION AND THE UNLOCKING-ACTION CAM-CONTOUR SURFACE PORTION INCLUDED IN THE OUTSIDE RECLINING DEVICE, FOR PROVIDING A MECHANICAL PHASE-LEAD OF THE INSIDE RECLINING DEVICE WITH RESPECT TO THE OUTSIDE RECLINING DEVICE. |
