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    • 2. 发明专利
    • Golf club shaft and golf club
    • 高尔夫俱乐部和高尔夫俱乐部
    • JP2013138759A
    • 2013-07-18
    • JP2011290434
    • 2011-12-29
    • Dunlop Sports Co Ltdダンロップスポーツ株式会社
    • YASHIKI TATSUYA
    • A63B53/10
    • A63B53/10A63B2209/02B29L2031/5227
    • PROBLEM TO BE SOLVED: To improve hitting feeling and the direction stability of a hit ball with excellent balance.SOLUTION: A golf club shaft 3 includes a fiber-reinforced resin material where a fiber layer is solidified by resin. The fiber layer includes a bias layer 7 comprising a bias fiber layer inclined to a shaft axis direction. The bias layer 7 includes a front-end side bias layer 8 extended from a shaft front end 3a, and a rear-end side bias layer 9 extended from a shaft rear end 3b. The tensile elastic modulus Et of bias fiber in the front-end side bias layer 8 is smaller than the tensile elastic modulus Eb of bias fiber in the rear-end side bias layer 9. Also, a rear edge 8b of the front-end side bias layer 8 and a front edge 9t of the rear-end side bias layer 9 are provided in the same position in a shaft axis direction, or in a position where the front-end side bias layer 8 and the rear-end side bias layer 9 overlap each other.
    • 要解决的问题:提高打击球的击球感和方向稳定性,平衡性好。高尔夫球杆轴3包括纤维层通过树脂固化的纤维增强树脂材料。 纤维层包括偏置层7,偏置层7包括倾斜于轴线方向的偏置纤维层。 偏置层7包括从轴前端3a延伸的前端侧偏置层8和从轴后端3b延伸的后端侧偏置层9。 前端侧偏置层8中的偏置光纤的拉伸弹性模量Et小于后端侧偏置层9中的偏置光纤的拉伸弹性模量Eb。另外,前端侧的后缘8b 后端侧偏置层9的偏置层8和前缘9t设置在轴轴方向的相同位置,或者在前端侧偏置层8和后端侧偏置层 9彼此重叠。