| 摘要 |
PURPOSE:To make a ride feeling comfortable by forming a cushion of a frame, a cushion layer mounted on the one plane of the said frame, and a weight mounted on its other plane through an elastic supporting means. CONSTITUTION:In a cushion 17, a base plate 18 partly forming a supporting member for the cushion 17 serves as a cushion frame. An elastic member layer 19 is mounted on the upper plane of the said base plate 18 as a cushion layer. The elastic member layer 19 is composed of a sponge rubber layer 19a, and a skin layer 20 covering its periphery and surface. A lump body 21 serving as a dynamic fixed box is suspended through a pushing plate 22 and a rubber elastic supporting member 23 (a sealing material as an elastic supporting means) from the lower plane layer of the base plate 18 as a weight. The elastic supporting member 23 is fixed to the base plate 18 using the pushing plate 22 and bolts, or by welding. Consequently, when the vibration having a fixed frequency acts onto the cushion 17, the lump body 21 works as a dynamic mass damper to prevent the cushion from being vibrated. Thus a comfortable ride can be obtained.
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