CN101190373A - 高尔夫球杆头 - Google Patents
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Abstract
本发明提供一种可得到更多回旋量的高尔夫球杆头。其具有杆面、在所述杆面上形成的多条刻线槽以及在所述杆面上形成的多条细槽,从所述刻线槽的趾端侧沿顺时针方向看,所述多条细槽的排列方向与所述刻线槽所成的角度为40度以上70度以下。
Description
技术领域
本发明涉及一种高尔夫球杆头。
背景技术
在高尔夫球杆头的杆面上,形成有多条被称为标记线槽、刻线槽或杆面线槽的槽(本说明书中称为刻线槽)。刻线槽影响球的回旋量。当使用铁杆型高尔夫球杆头尤其是挖起杆型高尔夫球杆头时,为了增大球的回旋量,希望形成这种槽。此外,杆面的表面粗糙度也会影响球的回旋量。在日本专利第3000921号公报中,公开了一种高尔夫球杆头,在其杆面上形成有有别于刻线槽的很多条细槽。
这里,当高尔夫球杆头为沙坑杆、切击杆等挖起杆型高尔夫球杆头时,相对于目标方向而言,有杆面成直角面向目标方向的情况、开放杆面的情况(杆面趾端方向与目标方向呈钝角,亦即,以高尔夫球杆身为中心使杆面沿顺时针方向回转则杆面为开放状态)以及闭合杆面的情况(杆面趾端方向与目标方向呈锐角)。例如,当让球高高上升时,使用高尔夫球杆时通常开放杆面。此外,当让球滚动时,使用高尔夫球杆时通常闭合杆面。相对于目标方向在杆面成直角的情况以及在开放杆面的情况下,通常希望球的回旋量更多,尤其是希望在开放杆面的情况下球的回旋量能较多。
发明内容
因此,本发明的目的在于,提供一种可得到更多的球回旋量的高尔夫球杆头。
本发明提供这样一种高尔夫球杆头,其具有杆面、在上述杆面上形成的多条刻线槽以及在上述杆面上形成的多条细槽,从上述刻线槽的趾端侧沿顺时针方向看,上述多条细槽的排列方向与上述刻线槽所成的角度为40度以上70度以下。
本发明的高尔夫球杆头中,通过设置上述多条细槽,可增大球与上述杆面的摩擦力,得到更多的球回旋量。此外,通过将上述多条细槽的排列方向与上述刻线槽所成的角度设置为:从上述刻线槽的趾端侧沿顺时针方向转动40度以上70度以下,可在使用高尔夫球杆且开放上述杆面的情况下,使球易产生回旋,得到更多的回旋量。
此外,本发明提供这样一种高尔夫球杆头,其具有杆面和在上述杆面上形成的多条细槽,其中,在以规定的杆底角和杆面倾角将上述高尔夫球杆头设置在水平面上时,上述多条细槽的排列方向和与上述杆面平行的水平方向所成的角度为:从上述高尔夫球杆头的趾端侧沿顺时针方向转动40度以上70度以下。
本发明的高尔夫球杆头上,通过设置上述多条细槽,可增大球与上述杆面的摩擦力,得到更多的球回旋量。此外,通过将上述多条细槽的排列方向和与上述杆面平行的水平方向所成的角度设置为:从上述高尔夫球杆头的趾端侧沿顺时针方向转动40度以上70度以下,可在使用高尔夫球杆且开放上述杆面的情况下,使球易产生回旋,得到更多的回旋量。
如上所述,采用本发明,可提供一种可得到更多球回旋量的高尔夫球杆头。
附图说明
图1是本发明一实施方式的高尔夫球杆头A的外观图。
图2是刻线槽20附近的与其长度方向(趾端-跟端方向)正交的方向的剖面图。
图3是表示利用铣床来加工细槽30的加工方法的图。
图4是表示细槽30的铣削加工时的切削工具1的移动轨迹的俯视图。
图5中(A)是表示将杆面10相对于目标方向成直角时的图。(B)是表示开放杆面10时的图。
图6是本发明其它实施方式的高尔夫球杆头B的外观图。
图7是表示以本发明的实施例1及2和比较例1至7来测量球回旋量的实验结果的图。
图8中(A)是以“回旋量”-“Ra”的关系来表示图7的实验结果的曲线图,(B)是以“回旋量”-“θO”的关系来表示图7的实验结果的曲线图。
图9是角度θO的其它规定方法的说明图。
具体实施方式
图1是本发明一实施方式的高尔夫球杆头A的外观图。该图的实例表示了将本发明应用在铁杆型高尔夫球杆头上的例子。本发明适用于要求球的回旋量较大的高尔夫球杆头,尤其适用于沙坑杆、劈起杆、切击杆等挖起杆型高尔夫球杆头。但是,本发明也适用于木杆型或多功能型的高尔夫球杆头。
高尔夫球杆头A在其杆面10上形成有多条刻线槽20。杆面10为高尔夫球的击球面。本实施方式中,各刻线槽20为沿趾端-跟端方向延伸的直线状槽,各刻线槽20的配设间隔(间距)为等间隔(等间距),其以相互平行的方式被形成。
图2是刻线槽20附近的与其长度方向(趾端-跟端方向)正交的方向的剖面图。本实施方式中,除了其长度方向的两端部之外,刻线槽20的剖面形状均相同。此外,各条刻线槽20的剖面形状相同,呈梯形状。
参照图1及图2,杆面10上形成有多条细槽30。细槽30为剖面面积小于刻线槽20剖面面积的槽,本实施方式中,该细槽30被形成得非常小。本实施方式中,各细槽30呈圆弧线状且互相不重叠。此外,本实施方式中,各细槽30为等半径圆的圆弧。
图1中,箭头dO表示多条细槽30的排列方向。本实施方式中,如上所述,各细槽30为等半径圆的圆弧。排列方向dO被定义为通过各细槽30的圆弧圆心的方向。排列方向dO和刻线槽20的长度方向所成的角度θO为:从刻线槽20的趾端侧沿顺时针方向转过40度以上70度以下。图1中所示的细槽30的情况下,角度θO约为45度。
角度θO可用排列方向dO和刻线槽20的关系以外的方法来规定。图9是角度θO的其它规定方法的说明图。该图的实例中,在将高尔夫球杆头以其规定的杆底角和杆面倾角设置在水平面HS上的情况下,角度θO被规定为细槽的排列方向dO和与杆面平行的水平方向HL所成的角度。
在图9的实例中,角度θO为从高尔夫球杆头的趾端侧沿顺时针方向转过40度以上70度以下。图9的实例中角度θO的规定方法可灵活用在如下情况,例如,对未设置刻线槽的高尔夫球杆头中的细槽的排列方向进行规定的情况,或对刻线槽为不规则设置的高尔夫球杆头中的细槽的排列方向进行规定的情况。
由铣削加工产生的切削轨迹可形成为细槽30。铣削加工可利用例如铣床来进行。图3是表示利用铣床来加工细槽30的加工方法的图。铣床具有被驱动而绕铅直轴Z旋转的主轴2,主轴2的下端安装有切削工具(端铣刀)1。未加工出细槽30的高尔夫球杆头A在杆面10呈水平状态下由夹具3固定到铣床上。切削工具1的刃部1a距铅直轴Z仅间隔有距离rt。距离rt则为细槽30的圆弧的圆的半径。
图4是表示细槽30铣削加工时的切削工具1的移动轨迹的俯视图。切削工具1和高尔夫球杆头A的相对移动方向(水平方向)与细槽30的排列方向dO一致。通过使切削工具1相对于高尔夫球杆头A沿排列方向dO相对移动并用切削工具1切削杆面10,形成多条细槽30。各条细槽30的圆弧圆心即铅直轴Z的位置通过排列方向dO。因此,排列方向dO则为穿过各条细槽30的圆弧圆心的方向。根据切削工具1在杆面10上产生的切削深度以及切削工具1的相对移动速度调整细槽30的深度、宽度以及间距。
接下来,对细槽30的效果进行说明。本实施方式中,通过设置多条细槽30,使杆面10的表面粗糙度与对杆面10进行镜面加工的情况相比变粗。通过使杆面10的表面粗糙度变粗,球和杆面10的摩擦力则增大,球则易产生回旋。虽然在杆面10的表面粗糙度越粗糙的情况下球越易产生回旋量,但这种情况下球也容易损坏。
因此,关于杆面10中形成细槽30的部分的表面粗糙度,就算术平均粗糙度(Ra)而言,优选为4.00μm~4.57μm。此外,就最大高度(Ry)而言,其优选为25μm以下。若杆面10的表面粗糙度在该数值范围内,则也符合关于正式比赛用高尔夫球杆头的杆面表面粗糙度的规定。
接下来,本实施方式中,通过将多条细槽30的排列方向dO与刻线槽20所成的角度设为40度以上70度以下,在使用安装有高尔夫球杆头A的高尔夫球杆且开放杆面10的情况下,球易产生回旋,可得到更多的回旋量。下面参照图5中(A)及(B)对此进行说明。
图5中(A)表示使杆面10与目标方向成直角的情况,(B)表示开放杆面10的情况。此外,图5中(A)及(B)中,细槽30被省略图示。此外,图5中(A)及(B)中,箭头表示相对于击球时的杆面10,球的相对移动方向。
如上所述,本实施方式中,通过设置多条细槽30,杆面10的表面粗糙度变粗,在图5中(A)及(B)中的任何一种情况下,球上都容易产生回旋。如图5(B)所示,在开放杆面10的情况下,击球时球以斜向横穿刻线槽20的方式在杆面10上滑动。
本实施方式中,通过将多条细槽30的排列方向dO与刻线槽20所成的角度设为40度以上70度以下,如图5中(B)所示,在开放杆面10的情况下,球滑过的细槽30的数量变得较多。换言之,球的相对移动方向和细槽30所成的角度近似为直角。因此,球易产生回旋,可得到更多的回旋量。
此外,本实施方式中,细槽30的形状为圆弧状,但也可以为直线状。图6是本发明其它实施方式的高尔夫球杆头B的外观图。高尔夫球杆头B中,除了多条细槽40呈直线状的方面以外,其它均与高尔夫球杆头A相同。
多条细槽40以相互平行的方式被形成。如本实施方式所示,多条细槽40为直线状的情况下,其排列方向dO’被定义为与各条细槽40正交的方向。排列方向dO’与刻线槽20的长度方向所成的角度θO’为从刻线槽20的趾端侧沿顺时针方向转过40度以上70度以下。
这样,即使在细槽40为直线状的情况下,球也容易产生回旋,尤其在开放杆面10的情况下,球易产生回旋,可得到更多的回旋量。
实施例
图7表示了以本发明的实施例1及2和比较例1至7来测量球回旋量的实验结果。实施例1及2连同比较例1至7中任意一个都为杆面倾角为56度的沙坑杆,作为该高尔夫球杆头,采用了具有图1中所示的圆弧状细槽30的高尔夫球杆头。在实施例1及2连同比较例1至7的任意一个中,细槽30都是通过用半径(图3的rt)为37.5mm的切削工具铣削加工而形成。
图7中,“θO”为图1中所示的θO,为细槽30的排列方向dO与刻线槽20所成的角度。“Ra”为杆面10中形成有细槽30的部分的表面粗糙度(算术平均粗糙度)的实际测量值。
图7中,“回旋量”表示球的回旋量。球的回旋量为:在球的表面上预先作上标记,用摄像机对被击打时的球拍摄,进而根据标记的位置变化而算出的值。
实验中,采用实施例1及2连同比较例1至7的高尔夫球杆,通过3名试验人员瞄准距障碍区40码的目标而打球来进行。3名试验人员分别在杆面10与目标方向成直角的情况下以及开放杆面10的情况下各打5个球。此外,开放杆面10的角度由实验者自由决定。
图7的“回旋量”中,“垂直(normal)”为杆面10与目标方向成直角时球回旋量的平均值,“开放”为开放杆面10时球回旋量的平均值。
图8中(A)是以“回旋量”-“Ra”的关系来表示图7实验结果的曲线图。由此可知:在“垂直”的情况与“开放”的情况中任何一种情况下,都是杆面10的表面粗糙度越粗糙,球的回旋量就越增加。此外,“Ra”从4μm附近开始,图中标绘线的倾斜度变大,回旋量在该位置增长很快,所以杆面10的表面粗糙度“Ra”优选为4μm以上。但是,如上所述,考虑到在杆面10的表面粗糙度越粗糙的情况下球越容易被损坏以及关于正式比赛用高尔夫球杆头的杆面表面粗糙度的规定,所以杆面10的表面粗糙度“Ra”优选为4.00μm以上4.57μm以下。
图8中(B)是针对实施例1及2和比较例5至7,以“回旋量”-“θO”的关系来表示图7实验结果的曲线图。此外,在实施例1及2和比较例5至7中,杆面10的表面粗糙度相同(Ra:4.4μm)。
由该图可知:在“垂直”的情况与“开放”的情况中任何一种情况下,在θO从0度开始到55度附近,回旋量都增加,超过55度附近,回旋量都降低。以55度附近为中心,θO在30度~80度的范围内,可在“开放”的情况下得到7000rpm以上的回旋量,所以说当θO为40度以上70度以下时,就可在“开放”的情况下充分得到球的回旋量。
Claims (5)
1.一种高尔夫球杆头,其具有杆面、在所述杆面上形成的多条刻线槽以及在所述杆面上形成的多条细槽,其特征在于,
从所述刻线槽的趾端侧沿顺时针方向看,所述多条细槽的排列方向与所述刻线槽所成的角度为40度以上70度以下。
2.如权利要求1所述的高尔夫球杆头,其特征在于,
各条所述细槽呈圆弧状,所述排列方向为穿过各条所述细槽的所述圆弧圆心的方向。
3.如权利要求2所述的高尔夫球杆头,其特征在于,
所述多条细槽通过铣削加工被形成。
4.如权利要求1所述的高尔夫球杆头,其特征在于,
所述杆面上形成所述细槽的部分的表面粗糙度用算术平均粗糙度(Ra)表示为4.00μm以上4.57μm以下。
5.一种高尔夫球杆头,其具有杆面以及在所述杆面上形成的多条细槽,其特征在于,
在以规定的杆底角和杆面倾角将上述高尔夫球杆头设置在水平面上时,从所述高尔夫球杆头的趾端侧沿顺时针方向看,所述多条细槽的排列方向和与所述杆面平行的水平方向所成的角度为40以上70度以下。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101905076A (zh) * | 2009-06-03 | 2010-12-08 | 住胶体育用品株式会社 | 高尔夫球杆头 |
CN103372292A (zh) * | 2012-04-30 | 2013-10-30 | 邓禄普体育用品株式会社 | 高尔夫球杆头 |
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-
2006
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-
2007
- 2007-06-06 CN CNA2007101105602A patent/CN101190373A/zh active Pending
- 2007-09-07 KR KR1020070090706A patent/KR101361260B1/ko active IP Right Grant
- 2007-11-16 US US11/941,465 patent/US7594863B2/en not_active Expired - Fee Related
- 2007-11-23 GB GB0723019A patent/GB2444377A/en not_active Withdrawn
-
2009
- 2009-08-21 US US12/545,701 patent/US7828671B2/en not_active Expired - Fee Related
-
2010
- 2010-06-09 US US12/797,004 patent/US7846040B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101905076A (zh) * | 2009-06-03 | 2010-12-08 | 住胶体育用品株式会社 | 高尔夫球杆头 |
CN101905076B (zh) * | 2009-06-03 | 2011-11-30 | 住胶体育用品株式会社 | 高尔夫球杆头 |
CN103372292A (zh) * | 2012-04-30 | 2013-10-30 | 邓禄普体育用品株式会社 | 高尔夫球杆头 |
CN103372292B (zh) * | 2012-04-30 | 2016-01-06 | 邓禄普体育用品株式会社 | 高尔夫球杆头 |
CN113056339A (zh) * | 2018-12-03 | 2021-06-29 | 尤尼克斯株式会社 | 高尔夫球杆头及高尔夫球杆头的制造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4917414B2 (ja) | 2012-04-18 |
US7594863B2 (en) | 2009-09-29 |
KR101361260B1 (ko) | 2014-02-11 |
JP2008132168A (ja) | 2008-06-12 |
US7846040B2 (en) | 2010-12-07 |
US20100261545A1 (en) | 2010-10-14 |
US7828671B2 (en) | 2010-11-09 |
US20080125242A1 (en) | 2008-05-29 |
GB2444377A (en) | 2008-06-04 |
US20090312116A1 (en) | 2009-12-17 |
GB0723019D0 (en) | 2008-01-02 |
KR20080048388A (ko) | 2008-06-02 |
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