| 摘要 |
PURPOSE:To secure such a low distortion, heavy-duty Belleville spring that is lighter in weight and large in fatigue strength by forming this spring a fiber reinforced plastic material made use of a continuous fiber oriented in the circumferential or radial direction, or by means of its superposition. CONSTITUTION:A Belleville spring 1 is made up of a fiber reinforced plastic in which a continuous fiber 2 is oriented in the radial direction, by way of example. As for this continuous fiber 2, it is desirable to use a high strength elastic fiber such as those of glass fiber, carbon fiber, alamide fiber, silicon carbide fiber, alumina fiber or the like. As for resin, thermosetting resin of epoxy, unsaturated polyester or the like, and thermoplastic resin of nylon, polypropylene or the like are used according to the demand of thermal and mechanical characteristics. In this connection, the Belleville spring may be formed by laminating a fiber reinforced plastic layer being different in the orientation of each continuous fiber. This Belleville spring is large in strength against fatigue and has a low distortion, heavy-duty characteristic and, what is more, remarkably lighter in weight as compared with the conventional steel- make. |
