| 摘要 |
PURPOSE:To prevent resonance and buckling by interposing a mixed layer made of silicone resin and viscous rubber between a couple of elastic members. CONSTITUTION:Mixed layers 22 and 23 made of a material which is tolerant to temperature variation and buffering and serves as an adhesive, i.g. silicone resin and a material which has superior temperature variation, damping characteristics, elasticity, and viscosity, e.g. isobutylene-isoprene rubber are interposed between leaf springs 19' and 19'', and 20' and 20'' formed to the same plate thickness and formed in one body respectively. Consequently, the leaf springs 19 and 20 are provided with viscosity without spoiling the characteristics of the leaf springs in focusing and tracking operation, and buckling and resonance are prevented by the reinforcement by the material layers which are not influenced by buffering. |
