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    • 6. 发明专利
    • racket
    • 球拍
    • JP2014171526A
    • 2014-09-22
    • JP2013044426
    • 2013-03-06
    • Yonex Co Ltdヨネックス株式会社
    • OGAWA NAOTOSAITO SHINJIIWAZAWA TOMOYA
    • A63B49/02A63B51/06
    • A63B51/00A63B49/02A63B49/028A63B2049/0217
    • PROBLEM TO BE SOLVED: To provide a tennis racket capable of enlarging the sweet spot of the racket without changing the shape of a frame.SOLUTION: A racket comprises; a grip; an annular frame 11 having a plurality of insertion holes formed for inserting a string thereinto; and a shaft 30 for connecting the grip and the frame 11 to each other. In the racket, the string going outside the frame 11 through the insertion holes, is turned back at a groove part 111 formed along the circumferential direction of the frame 11 on the outer circumferential surface of the frame 11, and when the longitudinal direction of the racket or the width direction orthogonal to the longitudinal direction on the hitting surface of the racket is made a first direction, the depth of the turning-back position of the string at a second position P3 on the outer side in the first direction than a first position P1 in the outer circumferential surface of the frame 11 is shallower than the depth of the turning-back position of the string at the first position P1 in the first direction in the outer circumferential surface of the frame 11.
    • 要解决的问题:提供能够在不改变框架的形状的情况下放大球拍的甜点的网球拍。 握力 环形框架11具有形成为用于将绳子插入其中的多个插入孔; 以及用于将把手和框架11彼此连接的轴30。 在球拍中,通过插入孔向框架11外侧的弦线在框架11的外周面上沿着框架11的圆周方向形成的槽部111转回, 将球拍或与球拍的击球面上的纵向方向正交的宽度方向设为第一方向,在第一方向的外侧的第二位置P3处的琴弦的后退位置的深度比第一方向 在框架11的外周面中的位置P1比在框架11的外周面中的第一方向上的第一位置P1处的琴弦的折回位置的深度浅。