| 摘要 |
PURPOSE: A controller for a cushion spring of a seat is provided to adjust intervals or a rear and a front position of each cushion spring to passengers' figure, to keep various figured passengers comfortable, and to supply continuously comfort in a long travel. CONSTITUTION: A cushion spring controller of a seat includes a driving shaft(16a) supported by an upper frame(12a) of a cushion frame(12), having a driving gear(14a), and rotating by an interval control handle(15), a driven shaft(19) rotating freely by a driven gear(18) connected to the driving gear and a driving belt(17), and a plurality of spring holders(13a¯13d) having respective cushion springs(10) and placed in parallel. The spring holders are supported to slide in front and in the rear direction on the upper frame, and each lower end thereof has a gear unit(20a,20b). Pluralities of gear motors(22a¯22d) being a motor structure corresponding to each spring holder in a one-on-one are supported to rotate in situ on the upper frame, and engaged concurrently with the driving gear and the driving belt coupled between the driven gear.
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