| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a jump, and reduce a noise by forming a holding plate of a carbon fiber composite material or a composite material of the carbon fiber composite material and a high polymer material. SOLUTION: A holding plate 6A is manufactured by using a carbon fiber composite material 14. A holding plate 6B is manufactured by using a plate compounded in a sandwich shape by respectively sticking carbon fiber composite materials 14 to both surfaces of resin 15 of a high polymer material. In either of the holding plates, urethane rubber 10 is added to the tip. In the carbon fiber composite material or a sandwich-shaped composite material of the carbon fiber composite material and the resin of the high polymer material, since weight is about 1/4 of iron or is lighter than aluminium, kinetic energy at collision time is small, and since a Young's modulus is lower than a metallic material, it is easily elasitically deformed, and has a shock absorbing effect, and a jumping phenomenon is hardly caused. Since a damping effect possessed by the material itself is also large, a noise is reduced. |
