Lamellar spring apparatus made of frp

Abstract

Abstract PURPOSE:To improve durability and mass productivity by forming the captioned apparatus by superposing a plurality of leaf springs made of FRP and using the reinforced fiber having different thickness. CONSTITUTION:A main spring plate 1 is formed by using only thin reinforced fiber having a large tensile strength and the superior durability, for example the reinforced fiber having a thickness of 10-15mum, while an auxiliary spring plate 3 is formed by using only the thick reinforced fiber which has the superior moldability and is suitable for mass production, e.g., the reinforced fiber having a thickness of 20mum or more. When each downward load is applied at the both edge parts of the main spring plate 1, the undersurface (compression stress side) of the main spring plate 1 gradually contacts with the auxiliary spring plate 3, as the deflection of the main spring plate 1 increases, and the nonlinear characteristic with increasing spring constant is provided. Therefore, importance is attached to the durability in the main spring plate 1 in comparison with in the auxiliary spring plate 3. Therefore, the durability of the main spring plate 1 can be improved by the thin reinforced fiber, and thick reinforced fiber can be used for the auxiliary spring plate 3, and thus moldability can be improved, and mass production is enabled.

Inventors

• 👤 Shuji Hiromoto
• 👤 修司 弘元

Bibliographic Details