CN1327918C - 高尔夫球杆头 - Google Patents

高尔夫球杆头 Download PDF

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CN1327918C
CN1327918C CNB008039119A CN00803911A CN1327918C CN 1327918 C CN1327918 C CN 1327918C CN B008039119 A CNB008039119 A CN B008039119A CN 00803911 A CN00803911 A CN 00803911A CN 1327918 C CN1327918 C CN 1327918C
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club head
thickness
glof club
surface plate
golf
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A·霍克内尔
R·C·博伊斯
H·E·阿圭纳尔多
R·C·赫姆斯特特
C·S·沃利
J·A·加洛维
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Topgolf Callaway Brands Corp
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
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    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
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    • A63B53/02—Joint structures between the head and the shaft
    • A—HUMAN NECESSITIES
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    • A63B53/00—Golf clubs
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K17/00—Making sport articles, e.g. skates
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    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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Abstract

公开了一种有一球杆头(42)的高尔夫球杆(40)，该球杆头有一厚度为0.010-0.250英寸的击球板(72)。该球杆头(42)可由一表面(60)、一顶板(62)和一底板(64)三个构件构成。这三个构件(60、62和64)可都用钛材料制成。球杆头(42)的击球板(72)的纵横比可小于1.7。击球板(72)还可有各同心厚度区，其中心为厚部。该球杆头(42)可用钛材料制成，其体积为175-400立方厘米，重量为165-300克，击球板(72)的表面积为4.00-7.50平方英寸。该高尔夫球杆头(42)在比方说按照1998-1999年高尔夫球规则的规则4-1e、附录II规定的USGA测试条件下的回弹系数大于0.8。

Description

高尔夫球杆头
技术领域
本发明涉及其表面由锻造材料构成的高尔夫球杆头，特别涉及其表面由薄锻造材料构成、从而击球时能更有效把能量传给高尔夫球的高尔夫球杆头。
背景技术
当一高尔夫球杆头击打一高尔夫球时，球杆头表面和该高尔夫球受到很大冲击。大多数能量从球杆头传给高尔夫球，但是，一些能量由于碰撞而损失。高尔夫球一般由包住一橡胶芯子的聚合材料(例如离聚物)面层构成。具有缓冲(吸能)特性的这些较软聚合材料会发生压缩变形，其决定于压缩变形率的缓冲特性比球杆金属表面的缓冲特性大10至100倍。因此，击球时，与球杆金属表面的小变形(0.025至0.050英寸)不同，高尔夫球的受力和变形很大(0.001至0.20英寸)，因此失去很多能量。球杆头传给高尔夫球的能量越有效，高尔夫球的飞行距离越远。
广为接受的方法是提高球杆头表面的刚性以减小金属头或球杆头的变形。但是，这造成高尔夫球变形加大，从而能量传递问题变得更严重。
有些人已认识到这一问题并公开了各种可能解决方案。一个例子是Campau的美国专利No.4,398,965“a Method Of Making Iron GolfClub With Flexible Impact Surface”，该专利公开的一球杆有一柔韧面板，该面板上有便于该面板挠曲的槽。Campau的该面板用黑色金属材料如不锈钢制成，厚度为0.1英寸至0.125英寸。
另一个例子是Eggiman的美国专利No.5,863,261“a Golf Club HeadWith Elastically Deforming Face And Back Plates”，该专利使用多块板，这些板在击球时共同作用，在高尔夫球上产生象弹簧一样的效果。至少两块板之间有流体用作粘滞耦合器。
另一个例子是Jepson等人的美国专利No.3,937,474“a Golf ClubWith A Polyurethane Insert”。Jepson公开了肖氏硬度D为40至75的聚氨酯插入物。
另一个例子是Inamori的美国专利No.3,975,023“a Golf Club HeadHead With Ceramic Face Plate”，该专利使用由具有高传能系数的陶瓷材料制成的面板，尽管陶瓷材料通常较硬。Chen等人的美国专利No.5,743,813“a Golf Club Head”使用由多层构成的表面来吸收高尔夫球的震动。材料之一是非金属材料。
Lu的美国专利No.5,499,814“a Hollow Club Head WithDeflecting Insert Face Plate”公开了一由塑料或铝合金制成的加固件，使得厚度为0.01-0.30英寸、制作材料为不锈钢、钛、KEVLAR(商标)等的面板发生微小偏转。Campau的另一个发明、美国专利No.3,989,248“a Golf Club Having Insert Capable Of ElasticFlexing”公开了其中有金属插入物的木制球杆。
尽管并不是为了面板的挠曲，Viste的美国专利No.5,282,624公开了一种高尔夫球杆头，该球杆头有一由锻造不锈钢制成、厚3mm的面板。Anderson的美国专利No.5,344,140“a Golf Club Head AndMethod Of Forming Same”的面板也使用锻造材料。Andereson的面板可由若干锻造材料制成，包括钢、铜和钛。该锻造板的厚度均匀，在0.090至0.130英寸之间。
另一项涉及球杆头中的锻造材料的发明是Su等人的美国专利No.5,776,011“a Golf Club Head”。Su公开的球杆头由三个构件构成，每一构件由锻造材料制成。Su的主要目的是生产一种升角精度提高、结构强度提高的球杆头。最后，Aizawa的美国专利No.5,346,216“a Golf Club Head”公开了一种具有弧形击球面的面板。
由美国高尔夫球联合会(“USGA”)和圣安德鲁斯皇家和古代高尔夫俱乐部确立和解释的高尔夫球规则规定了对高尔夫球杆头的某些要求。对高尔夫球杆头的要求见规则4和附录II。高尔夫球规则的完整说明见USGA网页 www.usga.org。尽管高尔夫球规则没有特别规定高尔夫球杆表面的各参数，但规则4-1e禁止该表面击球时产生弹簧效果。在1998年，USGA根按照规则4-1e采取一测量球杆表面COR的测试程序。可用该USGA测试程序以及与之类似的测试程序测量球杆表面COR。
尽管现有技术公开了各种各样的面板，但现有技术未能提供由薄材料制成、具有高回弹系数的面板。
发明内容
本发明提供一种高尔夫球杆头，该球杆头有一击球板，该击球板的回弹系数高，从而对于给定的球杆头击球前速度，可提高击球后高尔夫球的速度。为此，本发明使用由纵横比小(接近1.0)、表面积大的薄材料制成的击球板。
本发明的一个方面是提供一种高尔夫球杆头，包括：一由金属材料构成的表面件，该表面件包括：一用来击打具有一外表面和一内表面的高尔夫球的表面板，该表面板从该高尔夫球杆头的跟部伸展到该高尔夫球杆头的尖部；一从该表面板的周边沿横向向里伸展的表面延伸部；一在距该表面板的周边5.08毫米至25.4毫米的距离处固定在该表面延伸部的顶部上的顶板；以及一在距该表面板5.08毫米至25.4毫米的距离处固定在该表面延伸部的底部上的底板；该高尔夫球杆头的回弹系数为0.80至0.93。
根据本发明的具有一击球板的高尔夫球杆头，该击球板的厚度为0.010英寸至0.250英寸、在比方说由USGA规定的测试条件下的回弹系数至少为0.83。测量回弹系数的USGA标准条件见USGA的USGAProcedure for Measuring the Velosity Ratio of a Club Head forConformance to Rule 4-1e，Appendix II.Revision I，August 4，1998 and Revision 0，July 6，1998。
根据本发明的另一方面，提供了一种高尔夫球杆头，包括：一表面件，包括：一用来击打一有一外表面和一内表面的高尔夫球的表面板，该表面板从该高尔夫球杆头的跟部伸展到该高尔夫球杆头的尖部；一从该表面板的周边沿横向向里伸展的表面延伸部和一供一球柄插入的内部管道，该内部管道与该表面延伸部的一顶部和一底部接合；一在离该表面板5.08毫米至25.4毫米的距离处固定在该表面延伸部的顶部上的顶板；以及一在离该表面板5.08毫米至25.4毫米的距离处固定在该表面延伸部的底部上的底板。
本发明的另一个方面是一种包括一表面件、一顶板和一底板的高尔夫球杆头。该表面件的制作材料包括钛、钛合金、钢、琉态金属、复合物和陶瓷。该表面件包括一击打高尔夫球的击球板、一表面延伸部和一内部管道。该表面延伸部从该击球板周边沿横向向里伸展。该内部管道供一球柄插入并与该表面延伸部的一顶部和该表面延伸部的一底部连接。该顶板在离击球板变动距离处固定在该表面延伸部的顶部上。该底板在离击球板变动距离处固定在该表面延伸部的底部上。
本发明的另一个方面是一种高尔夫球杆头，该球杆头有一纵横比不大于1.7的击球板。该纵横比为该表面的宽度与高度之比。球杆头表面的纵横比一般大于1.7。例如，Callaway Golf Company ofCarlsbad，California的原GREAT BIG BERTHA(商标)球杆的纵横比为1.9。如下文详述，本发明球杆头击球板的较小纵横比可提高柔顺性、从而提高回弹系数。
本发明的另一个方面是一种高尔夫球杆头，包括：一由钛材料制成的主体，该主体的体积为175至400立方厘米、一般为260至350立方厘米、最好为300至310立方厘米，重量为160至300克、最好为175至225克；以及一表面，该表面的表面积为4.50至5.50平方英寸、最好为4.00至7.50平方英寸。
附图说明
图1为本发明高尔夫球杆的正视图。
图1A为本发明高尔夫球杆另一实施例的正视图。
图2为图1高尔夫球杆头的俯视图。
图2A为本发明高尔夫球杆另一实施例的俯视图。
图3为本发明高尔夫球杆头的表面件的俯视图，顶板用点划线表示。
图4为本发明高尔夫球杆头的侧视图。
图4A为本发明高尔夫球杆头另一实施例的侧视图。
图5为本发明高尔夫球杆头的仰视图。
图6为沿图5中6-6线剖取的剖面图。
图7为沿图3中7-7线剖取的剖面图，示出本发明高尔夫球杆头的插口。
图8为图7中圆圈8的放大图。
图9为本发明高尔夫球杆头的表面件的实施例的俯视图。
图10为本发明高尔夫球杆头的表面件的实施例的侧视图。
图11为本发明高尔夫球杆头的表面件的实施例的仰视图。
图12为本发明高尔夫球杆头的正视图，示出击球板的厚度变动。
图12A为本发明另一高尔夫球杆头的正视图，示出击球板的厚度变动。
图13为沿图12中13-13线剖取的剖面图。示出表面厚度变动。
图14为现有BIG BERTHA(商标)WARBIRD(商标)球杆的正视图。
图15为面心立方体模型的立体图。
图16为体心立方体模型的立体图。
图17为本发明高尔夫球杆头在击打高尔夫球之前的侧视图。
图18为本发明高尔夫球杆头在击打高尔夫球时的侧视图。
图19为本发明高尔夫球杆头在击打高尔夫球之后的侧视图。
具体实施方式
本发明涉及一种有一击球板的高尔夫球杆头，该击球板薄且回弹系数高，从而用本发明高尔夫球杆头击打的高尔夫球可飞得更远。回弹系数(“COR”)由下式计算：
e＝(v2-v1)/(U1-U2)
其中，U1为碰撞前球杆头速度；U2为碰撞前高尔夫球的速度，为0；v1为高尔夫球与球杆头表面分离紧后球杆头的速度；v2为高尔夫球与球杆头表面分离紧后高尔夫球的速度；e为高尔夫球与球杆表面之间的回弹系数。
对于不另加能量的系统，e的值限制在0至1.0。对于软土或油灰之类材料，回弹系数e接近0，而对于变形不造成能量损耗的全弹性材料，e的值为1。本发明提高一种具有一击球板或表面的高尔夫球杆，其在普通测试条件下的回弹系数接近0.93。
如图1-5所示，一高尔夫球杆总的用标号40表示。该高尔夫球杆40有一高尔夫球杆头42，该球杆头包括一主体44和一空心内部(未示出)。一球柄48与该球杆头42连接，该球柄的底端52上有一抓手50(未示出)，其顶端56插入一插口54中。一O形58在一通向插口54的孔59处套住球柄48。
球杆头42的主体44一般由三部分即一表面件60、一顶板62和一底板64构成。球杆头42也可分为一最靠近球柄48的跟部66、一与跟部66相对的尖部部68和一与表面件60相对的后部70。
表面件60一般由单片金属构成，最好由锻造金属材料构成。该锻造金属材料最好为锻造钛。但是，本领域普通技术人员不难看出，在本发明精神和范围内表面件也可由其他材料如钢、琉态金属、陶瓷、合成物、碳、碳纤维和其他纤维材料构成。表面件60一般包括一表面板(也称为击球板)72和一从表面板72的周边沿横向向里伸展的表面延伸部74。表面板72上有许多刻痕线75。图1A示出表面板72的另一实施例，其上的刻痕图案不同。表面延伸部74一般包括一横向延伸顶部76、一横向延伸底部78、一跟部壁80和一尖部壁82。
横向延伸顶部76向着空心内部46向里伸展预定距离后与顶板62连接。在一优选实施例中，从表面板72周边73到横向延伸顶部76边缘的该预定距离为0.2英寸至1.0英寸。与现有技术中顶板与表面板垂直连接不同，在本发明中，表面件60沿一水平平面与顶板62连接。这种连接提高了表面板72的柔性，从而回弹系数提高。顶板62与横向延伸顶部76沿连接线81用焊接之类牢牢固定在一起。如图2A所示，在另一实施例中，横向延伸顶部76在向里更大距离处与顶板62连接，因此焊缝离表面板72受力处比图2实施例更靠后。
本发明的独特之处还在于表面延伸部74的一环绕通向插口54的孔59的插口部84。插口部84的宽度w1大于整个横向延伸顶部76的宽度w2。插口部84逐渐过渡到跟部壁80。跟部壁80与表面板72垂直，跟部壁80在与底板64的一围带90和一底部91连接前覆盖插口54。跟部壁80用焊接之类与底板64的围带90和底部91固定在一起。
表面件60的另一端上有从表面板72呈凸弧形的尖部壁82。尖部壁82用焊接之类与底板64的围带90和底部91固定在一起。
横向延伸底部78向着空心内部46向里伸展预定距离后与底板64连接。在一优选实施例中，从表面板72周边73到横向延伸底部78该端的该预定距离为0.2英寸至1.0英寸。与现有技术中底板与表面板垂直连接不同，在本发明中，表面件60沿一水平平面与底板64连接。这一连接使得受焊接热量影响的区域从顶板/表面板强度转折半径区后移。这种连接提高了表面板72的柔性，从而回弹系数提高。底板64与横向延伸底部78沿连接线81用焊接之类牢牢固定在一起。本发明的独特之处还在于表面延伸部74的一环绕通向插口54的底板64上的孔114的孔部86。孔部86的宽度w3大于整个横向延伸底部78的宽度w4。孔部86逐渐过渡到跟部壁80。
顶板62一般向底板64凸起，其与表面件60连接部分之外的部分与底板64的围带90连接。顶板62上可有用来帮助对准球杆头42与一高尔夫球的V形符号88或其他记号。顶板62的厚度为0.025至0.060英寸，最好为0.035至0.043英寸，更好为0.039英寸。顶板62最好用钛片材之类热成形或“精压”材料构成。但是，本领域普通技术人员不难看出，在本发明范围和精神内顶板62也可使用其他材料或成形工艺。
底板64一般由底部91和与底部91大致垂直的围带90构成。底部91一般向顶板62凸起。该底部有一中央凸脊92，第一横向延伸部94向尖部部68伸展，第二横向延伸部96向跟部66伸展。中央凸脊92和第一横向延伸部94界定第一凸形凹槽98，中央凸脊92和第二横向延伸部96界定第二凸形凹槽100。底板64的厚度为0.025至0.060英寸，最好为0.047至0.055英寸，更好为0.051英寸。底板64最好用钛片材之类热成形或“精压”材料构成。但是，本领域普通技术人员不难看出，在本发明范围和精神内底板64也可使用其他材料或成形工艺。
图6-8示出本发明球杆头42的空心内部46。插口54位于空心内部46中而成为表面件60的一部件。插口54可用与表面件60相同的材料构成，用焊接之类固定在表面件60上。插口54在表面件60中的位置使得插口54的重量集中在表面板72上靠近跟部66，以增加表面板72的击球质量。在孔114与孔59之间形成一圆管的插口壁120界定插口54的空心内部118。在一优选实施例中，插口壁120不接触跟部壁80，因此插口壁120与跟部壁80之间有一空间115。球柄48插入插口54中。此外，插口54位于表面板72后方，使得表面板72与一高尔夫球碰撞时具有柔顺性。在一实施例中，插口54位于表面板72后方0.125英寸处。
球杆头42的空心内部46中还可有任选的双镇重件122和123。在一优选实施例中，镇重件122和123位于底板64上，以降低高尔夫球杆40的重心。镇重件122和123(未示出)的形状可与底板64一致。但是，本领域普通技术人员不难看出，为影响高尔夫球杆40的重心、转动惯量或其他固有特性，镇重件也可位于球杆头42的其他位置上。镇重件122和123最好为粉末钛材料之类压制和烧结粉末金属材料。镇重件122和123也可为铸造或机加工钛片。镇重件122和123还可为旋入底板64的孔124中的钨制螺丝。尽管把钛和钨用作例示性材料，但本领域普通技术人员不难看出，在本发明范围和精神内任选镇重件也可使用其他高密度材料。
图9-11示出连接线81a和81b的变化。连接线81b示出表面件60的表面延伸部74的变动。该变动的连接线位于V形符号88后方。连接线81b为优选连接线。
图12、12A和13示出其表面板72厚度变动的本发明实施例。表面板或击球板72分成厚度各不相同的椭圆区。中央椭圆区102最厚，其厚度为0.090至0.110英寸，最好为0.093至0.103英寸，更好为0.095英寸。其次为第一同心区104，其厚度为0.082至0.097英寸，最好为0.082至0.090英寸，更好为0.086英寸。其次为第二同心区106，其厚度为0.070至0.094英寸，最好为0.070至0.078英寸，更好为0.074英寸。其次为第三同心区108，其厚度为0.07至0.090英寸。其次为周边区110，其厚度为0.061至0.06 9英寸。该周边区包括尖部周边区110a和跟部周边区110b。表面板72的厚度变动使得最大厚度分布在表面板72的中央111，从而提高表面板72的柔性并因此提高回弹系数。
在另一实施例中，击球板72用琉态金属如铁-硼、镍-铜、镍-锌、镍-硫构成。这些琉态金属使得击球板72可薄达0.055英寸。最好是，这类琉态金属击球板的最薄部分位于周边区110a和110b上，尽管这类琉态金属击球板72的整个击球板72可有0.055英寸的均匀厚度。
在另一实施例中，击球板72由陶瓷、合成物或其他金属构成。此外，表面板或击球板72可为木制或铁制球杆头的一插入物。此外，击球板72的最薄区可薄达0.010英寸，以提高柔顺性并因此提高回弹系数。
在用给定高尔夫球进行的USGA标准测试条件下本发明球杆头42的回弹系数为0.80至0.93，最好为0.83至0.883，更好为0.87。表面件60的钛材料的微结构的面心立方体(“FCC”)微结构如图15所示，其体心立方体(“BCC”)微结构如图16所示。FCC微结构与β钛有关，BCC微结构与β钛有关。
此外，本发明表面板7 2的纵横比比现有表面板小(图14示出现有技术的一个例子)。纵横比定义为表面的宽度“w”除以表面的高度“h”，参见图1A。在一实施例中，宽度w为78mm，高度h为48mm，因此纵横比为1.635。在现有高尔夫球杆头中，纵横比通常远大于1。例如，原GREAT BIG BERTHA球杆的纵横比为1.9。本发明该表面的纵横比不大于1.7。本发明的纵横比最好为1.0至1.7。一个实施例的纵横比为1.3。本发明的该表面比现有技术更呈圆形。本发明表面板72的表面积为4.00至7.50平方英寸，最好为4.95至5.1平方英寸，更好为4.99至5.06平方英寸。
本发明球杆头42在与现有球杆头等重的条件下其体积比现有球杆头大。本发明球杆头42的体积为175至400立方厘米，最好为300至310立方厘米。本发明球杆头42的重量为165至300克，最好为175至225克，更好为188至195克。该球杆头从表面板72到顶板62后部的深度最好为3.606至3.741英寸。球杆头42在击球位置时的高度“H”最好为2.22至2.27英寸，更好为2.24英寸。球杆头42从尖部部68到跟部66的宽度“W”最好为4.5至4.6英寸。
如图17-19所示，表面板72的柔性使得回弹系数提高。图17中示出表面板72即将击打一高尔夫球140。图18示出表面板72击打该高尔夫球，高尔夫球140和表面板72发生变形。图19示出高尔夫球140从表面板72射出。
本发明高尔夫球杆42与原GREAT BIG BERTHA球杆类似形状的高尔夫球杆头进行比较，示出纵横比、厚度和面积的变动对表面板72的COR和应力造成的影响。但是，GREAT BIG BERTHA基准的表面厚度均匀，其0.110英寸的厚度比Callaway Golf Company的原GREAT BIGBERTHA球杆薄。比方说在按照1998-1999高尔夫球规则的规则4-1e，附录II规定的USGA测试条件下，GREAT BIG BERTHA基准的COR值为0.830，而原GREAT BIG BERTHA球杆的COR值为0.788。把GREAT BIGBERTHA用作基准对表面中央进行100mph碰撞时，表面顶部的应力为40千磅/平方英寸(“ksi”)，表面底部的应力为49ksi，表面中央的应力为29ksi。GREAT BIG BERTHA基准的表面偏转在100mph下为1.25mm。图20-29为把GREAT BIG BERTHA用作基准时与这些参数有关的曲线图。表面顶部指横向延伸顶部76，表面底部指横向延伸底部78，表面中央指表面板72的中央。
较之纵横比和面积，厚度比变动对COR变动的影响最小。但是，对于给定高尔夫球，比方说在按照1998-1999高尔夫球规则的规则4-1e，附录II规定的USGA测试条件下，本发明高尔夫球杆头43同时使用厚度比、纵横比和面积这三者提高COR。因此，与弹簧不同，在不增加该系统的能量的条件下，本发明提高表面板的柔顺性，减小击球时高尔夫球的能量损耗。
表1示出本发明高尔夫球杆头42与市场上销售的各种高尔夫球杆的使用寿命，包括Bridgestone Sport of Tokyo，Japan的BIIM球杆；Katana Golf of Tokyo，Japan的KATANA SWORD 1球杆；KatanaGolf of Tokyo，Japan的KATANA SWORD 2球杆；Daiwa-Seiko of Tokyo，Japan的S-YARD.301NF；Daiwa-Seiko of Tokyo，Japan的S-YARD.301NF11；Mizuno Golf of Tokyo，Japan的Mizuno 300S；Callaway Golf Company of Carsbad California的BIGGEST BIG BERTHA和Callaway Golf Company of Carsbad California的GREAT BIG BERTHAHAWK EYE球杆。第一列列出各高尔夫球杆头。第二列列出各高尔夫球杆头的COR。第三列列出各高尔夫球杆头击球板损坏前与符合USGA标准的高尔夫球的碰撞次数。第四列列出某些高尔夫球杆头的表面中央的厚度。如表1所示，没有一个高尔夫球杆头的COR至少为0.85而其寿命经得起与速度为110英里/小时的一高尔夫球碰撞2000次。尽管KATANA SWORD 1的COR超过0.85，但其寿命不够，因为它在约1500次碰撞后损坏。BIIM球杆的寿命超过2000次碰撞，但其COR小于0.850。MIZUNO 300S的寿命约为5000次碰撞，但其COR小于0.840。
表1
    球杆     COR   造成损坏的碰撞次数     表面中央厚度
    120     0.875     5000     0.095
    110     0.870     5000     0.100
    100     0.865     4500     0.105
    90     0.855     3500     0.110
    BIIM     0.845     3500     0.106
    KatanaSword-1     0.855     1500     0.106
    KatanaSword-2     0.830     2000     ......
    5-Yard.301NF     0.830     1500     ......
    5-Yard.301NF11     0.835     4000     0.102
    Mizuno 300S     0.839     5000     ......
    BBB     0.789     4500     ......
    GB Hawk Eye     0.789     4500     ......
为确定寿命，用从一气炮以110英里/小时(“MPH”)射出的高尔夫球反复碰撞高尔夫球杆。该高尔夫球杆固定在一架上，其击球板正对该气炮。从气炮以110MPH射出的高尔夫球反复碰撞该击球板的中央。高尔夫球为符合USGA高尔夫球标准的PINNACLE GOLD高尔夫球。在每进行500次碰撞后，检查球杆头是否损坏。检查球杆头是否发生表面开裂、鼓起和隆起偏差、表面变形和焊缝、接头和接缝开裂。用至少140英尺烛光的照明检查表面开裂是否大于0.50英寸。如大于0.50英寸，则表明球杆头损坏。使用一直规和塞尺确定表面变形，检查该表面上是否有地方偏差大于0.005英寸。用鼓起和隆起量规确定鼓起和隆起，检查该表面中央处的偏差是否大于0.005英寸。用至少140英尺烛光的照明检查焊缝、接头和接缝，检查各表面之间是否开裂。最重要的因素是表面开裂，如该裂缝大于0.50英寸，就造成高尔夫球杆损坏。

Claims (18)

1、一种高尔夫球杆头，包括：
一由金属材料构成的表面件，该表面件包括：一用来击打具有一外表面和一内表面的高尔夫球的表面板，该表面板从该高尔夫球杆头的跟部伸展到该高尔夫球杆头的尖部；一从该表面板的周边沿横向向里伸展的表面延伸部；
一在距该表面板的周边5.08毫米至25.4毫米的距离处固定在该表面延伸部的顶部上的顶板；以及
一在距该表面板5.08毫米至25.4毫米的距离处固定在该表面延伸部的底部上的底板；该高尔夫球杆头的回弹系数为0.80至0.93。
2、按权利要求1所述的高尔夫球杆头，其特征在于，该表面板的厚度为0.889毫米至3.175毫米。
3、按权利要求1所述的高尔夫球杆头，其特征在于，该表面板的厚度为0.2794毫米至1.524毫米。
4、按权利要求1所述的高尔夫球杆头，其特征在于，该表面板的制作材料选自钛、钛合金、钢、琉态金属、陶瓷、合成物、碳材料、碳纤维材料、其他纤维材料及其混合物组成的材料组。
5、按权利要求1所述的高尔夫球杆头，其特征在于，该表面板有厚度不同的各同心区，其中心区最厚。
6、按权利要求1所述的高尔夫球杆头，其特征在于，该表面板包括：一有基本厚度的中心圆形区；一有第一厚度的第一同心区，该基本厚度大于该第一厚度；一有第二厚度的第二同心区，该第一厚度大于该第二厚度；一有第三厚度的第三同心区，该第二厚度大于该第三厚度；以及一有第四厚度的周边区，该第四厚度小于该第三厚度。
7、按权利要求1所述的高尔夫球杆头，其特征在于，该高尔夫球杆头的回弹系数为0.85至0.93。
8、一种高尔夫球杆头，包括：
一表面件，包括：一用来击打一有一外表面和一内表面的高尔夫球的表面板，该表面板从该高尔夫球杆头的跟部伸展到该高尔夫球杆头的尖部；一从该表面板的周边沿横向向里伸展的表面延伸部和一供一球柄插入的内部管道，该内部管道与该表面延伸部的一顶部和一底部接合；
一在离该表面板5.08毫米至25.4毫米的距离处固定在该表面延伸部的顶部上的顶板；以及
一在离该表面板5.08毫米至25.4毫米的距离处固定在该表面延伸部的底部上的底板。
9、按权利要求8所述的高尔夫球杆头，其特征在于，该底板包括固定在该顶板上的围带部。
10、按权利要求8所述的高尔夫球杆头，其特征在于，该表面板用锻造的钛材料制成。
11、按权利要求8所述的高尔夫球杆头，其特征在于，该底板还包括一从该表面部向后伸展的中央凸脊，该中央凸脊把该底板分成尖部和跟部。
12、按权利要求8所述的高尔夫球杆头，其特征在于，该表面件的该表面板的厚度为2.54毫米至6.35毫米，回弹系数至少为0.83。
13、按权利要求12所述的高尔夫球杆头，其特征在于，该表面板的纵横比不大于1.7。
14、按权利要求8所述的高尔夫球杆头，其特征在于，该表面板的厚度从中心向外变动。
15、按权利要求8所述的高尔夫球杆头，其特征在于，该表面板有厚度不同的各同心区，其中心区最厚。
16、按权利要求8所述的高尔夫球杆头，其特征在于，该表面板包括：一有基本厚度的中心圆形区；一有第一厚度的第一同心区，该基本厚度大于该第一厚度；一有第二厚度的第二同心区，该第一厚度大于该第二厚度；一有第三厚度的第三同心区，该第二厚度大于该第三厚度；以及一有第四厚度的周边区，该第四厚度小于该第三厚度。
17、按权利要求8所述的高尔夫球杆头，其特征在于，该表面延伸部的顶部有一环绕该内部管道延伸的插口部，该插口部的宽度大于整个该表面延伸部顶部的宽度。
18、按权利要求8所述的高尔夫球杆头，其特征在于，该表面延伸部的底部有一环绕该内部管道延伸的孔部，该孔部的宽度大于整个该表面延伸部底部的宽度。
CNB008039119A 1999-11-01 2000-10-31 高尔夫球杆头 Expired - Fee Related CN1327918C (zh)

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