| 摘要 |
PURPOSE:To simplify a drive shaft in structure by engaging more than two internal thread elements, having a lead angle in accord with a stroke necessary at every more than two sliding doors, with the drive shaft having an external thread effect, rotating this shaft and opening or closing the sliding door. CONSTITUTION:Each of unternal thread elements 6, 7, 8 is engaged with one drive shaft 2 provided with a groove of an external thread having three lead angles A, B, C in accord with the range of strokes H, M, L necessary for each of three sliding doors 3, 4, 5. Then, these elements 6, 7, 8 coupled with the sliding doors 3, 4, 5 via arms 9, 10, 11 are moved in the axial direction by rotation of a reversible motor 1, through which these sliding doors 3, 4, 5 are synchronously opened or closed. With this constitution, a driving structure can be simplified. |
