| 摘要 |
PURPOSE:To contrive to reduce the weight and maximum stress of the device by a structure wherein an auxiliary leaf spring is set shorter than main leaf springs and the stress distribution in the main springs is formed uniformly. CONSTITUTION:The main leaf springs 1 with the effective length of L and the auxiliary leaf spring 2 with the effective length of l are piled up in the direction of leaf thickness ones on the other and supported in the manner of cantilever at base parts 3 and 4 through a supporting means 5. The lengths L0 and l0 which are the distances from the longitudinal center 6 of the main and auxiliary leaf springs 1 and 2 to the loading points 7 and 8 respectively, are set at the predetermined values. The half of the load to be applied to the device P/2 is supported at the loading point 7. In addition, the springs constitute so that, when the predetermined load P0 is not smaller than the load P, only the main leaf springs 1 fulfil spring action and, when the predetermined load P0 is smaller than the load P, both the main leaf spring and the auxiliary leaf spring fulfil spring action. Owing to the structure as described above, the stress distribution in the main springs is uniformalized, resulting in enabling to reduce the weight and maximum stress of the device. |
