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    • 14. 发明授权
    • Racket frame
    • 拍框架
    • US08562462B2
    • 2013-10-22
    • US13537524
    • 2012-06-29
    • Yosuke YamamotoKuniyasu Horiuchi
    • Yosuke YamamotoKuniyasu Horiuchi
    • A63B49/02
    • A63B49/02A63B49/08A63B49/10A63B60/42A63B60/54
    • A racket frame 2 includes a body 4 and a first vibration-damping portion 6 fixed to the body 4. The body 4 includes a head 8, a shaft 12, a pair of throats 10 extending from the head 8 to the shaft 12, and a grip 14 connected to the shaft 12. The body 4 includes a second vibration-damping portion 18, and the material of the second vibration-damping portion 18 is different from the material of the first vibration-damping portion 6. The ratio (R2/R4) of a side pressure rigidity R2 to a throat rigidity R4 is 0.26 or greater, a moment of inertia around an axis at a position of 10 cm from a grip end is less than 300 kg·cm2, and a vibration damping rate in an out-of-plane secondary mode is equal to or greater than 0.70 but equal to or less than 1.0.
    • 球拍框架2包括主体4和固定到主体4的第一减振部分6.主体4包括头部8,轴12,从头部8延伸到轴12的一对喉部10,以及 连接到轴12的把手14。主体4包括第二减振部18,第二减振部18的材料与第一减振部6的材料不同。比率(R2 侧压力R2的R2 / R4为0.26以上,与夹持端相距10cm的轴的惯性矩小于300kg·cm 2,振动阻尼率 面外二次模式等于或大于0.70但等于或小于1.0。