CN101337122A

CN101337122A - Golf club heads with a plurality of stress zones and methods to manufacture golf club heads

Info

Publication number: CN101337122A
Application number: CNA2007101948213A
Authority: CN
Inventors: 埃里克·J·莫拉莱斯; 安东尼·D·塞拉诺; 马蒂·R·杰特森
Original assignee: Karsten Manufacturing Corp
Current assignee: Karsten Manufacturing Corp
Priority date: 2007-07-03
Filing date: 2007-11-22
Publication date: 2009-01-07
Also published as: SE0801499L; FR2918289A1; TW200920447A; KR20090004368A; JP2009011839A; GB0721108D0; DE102007059339A1; GB2450764A; AU2007229390A1

Abstract

The present invention discloses a golf club head with a plurality of stress zones and a method to manufacture the golf club head. The club head comprises a body having a toe end, a heel end, a front end, a back end, a face portion, a top wall portion, and a bottom wall portion; a first zone including one or more apertures on at least one of the top wall portion or the bottom wall portion, the first zone extending between the back end and a bell-shaped curve associated with a loft plane substantially parallel to the face portion; and a second zone extending between the front end and the bell-shaped curve, wherein the first zone is associated with relatively lower stress load than the second zone in response to impact on the face portion, and wherein the bell-shaped curve extends between the toe end and the heel end.

Description

Bar head and manufacture method thereof with golf clubs of a plurality of stressed zones

Related application

The application is in the 11/613rd of submission on December 20th, 2006, No. 854 patent applications and on March 29th, 2007 submit to the 11/693rd, the continuous application of No. 490 patent applications, and require the 60/884th, No. 685 U.S. Provisional Application No. in U.S.'s submission on January 12nd, 2007.

Technical field

The present invention relates generally to the utensil that plays golf, the bar head that relates to golf clubs particularly with a plurality of stressed zones with and manufacture method.

Background technology

The bar head of golf clubs can be designed to, and tolerates eccentric the strike by adjusting its center of gravity and/or rotary inertia biglyyer.For example, one or more holes can form (for example, bizet) thereby reduce the weight of top wall portion on the wall part of the bar crown of golf clubs.As a kind of selection, can form one or more thin parts in top wall portion, reduce the weight of top wall portion thus.But, the size of above-mentioned hole or thin part and/or structural integrity, durability, vibrational feedback and/or the sound feedback of bar head when being clashed into that the position can influence golf clubs in response to its pole face (for example, striking face).

Summary of the invention

The invention provides a kind of bar head and manufacture method thereof with golf clubs of a plurality of stressed zones.

According to an aspect of the present invention, provide a kind of like this bar head, it comprises:

Body has toe-end, heel end, front end, rear end, batting part, top wall portion and bottom wall portion;

First district comprises being formed at described top wall portion and described bottom wall portion one or more holes one of at least that described first district extends between described rear end and bell curve, described bell curve is associated with the high strike face that is basically parallel to the batting part; And,

Extend between described front end and described bell curve in second district,

Wherein, when described batting part was subjected to clashing into, it is less that described first district and described second district compare the mechanical load that is subjected to, and

Described bell curve extends between described toe-end and described heel end.

According to another aspect of the present invention, provide a kind of like this method, it comprises:

Form body, described body has toe-end, heel end, front end, rear end, batting part, top wall portion, bottom wall portion, first district and second district, described first district described rear end and and bell curve between extend, described bell curve with and the substantially parallel high strike face of described batting part be associated, extend between described front end and described bell curve in described second district; And,

Form in described first area and to be positioned at described top wall portion and described bottom wall portion one or more holes one of at least, wherein, when described batting partly was subjected to clashing into, described first district had the lower mechanical load than described second district, and,

Wherein, described bell curve extends between described toe-end and described heel end.

Description of drawings

Fig. 1 is a kind of schematic diagram of bar head of exemplary golf clubs of an embodiment according to method, device and production method described in this specification;

Fig. 2 is the vertical view of the example golf club bar head among Fig. 1;

Fig. 3 is the upward view of the example golf club bar head among Fig. 1;

Fig. 4 is the sectional view of the example golf club bar head among Fig. 1;

Fig. 5 is the vertical view of another kind of golf club head example;

Fig. 6 is the vertical view of another kind of golf club head example;

Fig. 7 is the vertical view of another kind of golf club head example;

Fig. 8 is the flow chart of a kind of manufacture method of the example golf club bar head among Fig. 1;

Fig. 9 is the partial section of the example golf club bar head among Fig. 1;

Figure 10 is a kind of partial section of example golf club bar head;

Figure 11 be among Fig. 1 with the schematic diagram of the cross section of exemplary bell (bell-shaped) curvilinear correlation of example golf club bar head; And,

Figure 12 is the vertical view of another example golf club bar head.

The specific embodiment

Briefly, the article of device, method and the manufacturing that description is relevant with the golf club head with a plurality of stressed zones in this article.The article of method of the present invention, device and manufacturing are not limited thereto.

In the example of Fig. 1-4, golf club head 100 can comprise body 110.Put it briefly, body 110 (for example can comprise one or more holes 120 (prevailingly with Reference numeral 122,124,126 and 128 expressions), toe-end 130, heel end 132, front end 134, rear end 136, batting part 140, top wall portion 142, bizet), bottom wall portion (for example, bottom) and sidewall 146 (for example, side skirt).Body 110 can have metal material to make, such as titanium, titanium alloy and/or other suitable material.As the following detailed description, hole 120 can comprise opening, crack, gap or their any combination.

Toe-end 130 can be relative with heel end 132.Equally, front end 134 can be relative with rear end 136.Batting part 140 is positioned at front end 134 and is configured to be used to clash into the golf (not shown).Particularly, batting part 140 can comprise a plurality of grooves 150.A plurality of grooves 150 are elongated along the direction between toe-end 130 and the heel end 132 on batting part 140.Top wall portion 142 can be relative with bottom wall portion 144.Sidewall 146 can be between top wall portion 142 and

bottom wall portion

144, and 136 bendings along the rear end between the toe-end 130 of body 110 and heel end 132.

Golf club head 100 also can comprise bar neck interface 160 and bar neck interface transition portion 165.For example, bar neck interface 160 can be positioned at heel end 132 or contiguous with it.Bar neck interface 160 can extend from body 110 via bar neck interface transition portion 165.In order to constitute golf clubs, first end of bar neck interface 160 receivability bars 198.Can bar 198 be fixed on the golf club head 100 by gluing method of attachment (for example, epoxy resin) and/or other suitable method of attachment (for example, mechanical connection, soft soldering, welding and/or brazing).Further, second end that handle 199 is fixed on bar 198 forms golf clubs thus.The present invention is not limited thereto.

Body 110 can comprise first district 170 and second district 180.In response to the bump on batting part 140, more relatively stress can be born or stand in 180 to the first districts 170, second district.In one example, first and

second districts

170 and 180 can be represented with

Reference numeral

190 and 195 in Fig. 2 and 3 respectively prevailingly by one or more bell curves (for example, the shape of normal distribution) definition.With reference to figure 2, for example, first bell curve 190 can comprise 1: 210, second: 220 and thirdly 230.1: 210 can be positioned at or approach the toe-end 130 of body 110.1: 220 can be positioned at or approach the heel end 132 of body 110.Thirdly 230 can be positioned at or approach top wall portion 142 distance batting parts 140 point (for example, being positioned at or approaching the center of first bell curve 190) farthest.

First bell curve 190 can be represented first district 170 and second district 180 border on top wall portion 142 each other.Specifically, first bell curve 190 can indicate one or more holes 120 in the position of top wall portion 142, does not optimize its center and/or rotary inertia thereby do not damage substantially under the situation of structural integrity, durability, vibrational feedback and/or sound feedback of bar head 100 of golf clubs.The present invention does not limit to therewith.

With reference to figure 3, for example, second bell curve 195 also can comprise 1: 310, second: 320 and thirdly.1: 310 can be positioned at or approach the toe-end 130 of body 110.1: 320 can be positioned at or approach the heel end 132 of body 110.Thirdly 330 can be positioned at or approach distance batting part 140 point (for example, being positioned at or approaching the center of second bell curve 195) farthest on the bottom wall portion 144.

As the mode of first bell curve 190, second bell curve 195 can be represented first district 170 and second district 180 border on bottom wall portion 144 each other.Specifically, second bell curve 195 can be indicated the position of one or more hole 120 on bottom wall portion 144, does not optimize its center and/or rotary inertia thereby do not damage substantially under the situation of structural integrity, durability, vibrational feedback and/or sound feedback of bar head 100 of golf clubs.The present invention does not limit to therewith.

In the example in Fig. 4, first and

second bell curves

190 and 195 can based on) 405, first 410 and second 420 in high strike face (loft plane).Substantially be parallel to each other for first 410 and second 420, and parallel with high strike face 405.Especially, first 410 can have first distance (D1) with high strike face 405, and second 420 can have second distance (D2) with high strike face 405.1: 210 and 220 of first bell curve 190 can be positioned at first 410.1: 310 and 320 of second bell curve 195 also can be positioned at first 410.First bell curve 190 thirdly 230 can be positioned at second 420.Second bell curve 195 thirdly 330 also can be positioned at second 420.

With thirdly 230 comparing of first bell curve 190,1: 210 of first bell curve 190 can more approach high strike face 405 relatively with 220, and this is can bear or stand more stress because approach thirdly 230 zone substantially.Equally, second bell curve 195 1: 310 with 320 with thirdly 330 the comparing of second bell curve 195, can relatively more approach high strike face 405, this is can bear or stand more stress because approach thirdly 230 zone substantially.

Particularly, first district 170 can extend between rear end 136 and first and

second bell curves

190 and 195, and second district 180 can extend between front end 134 and first and second bell curves 190 and 195.First district 170 can comprise hole 120, with situation in structural integrity, durability, vibrational feedback and/or the sound feedback of the bar head 100 that does not damage golf clubs, and the weight of redistribution golf club head 100.That is to say, because the existence in hole 120, so top wall portion 142 and/or diapire 144 weight reduce.On the contrary, second district 180 does not comprise hole 120, to prevent that structural integrity, durability, vibrational feedback and/or the sound feedback of the bar head 100 of golf clubs suffer damage when batting part 140 is clashed into.Owing to have hole 120 in first district 170, thereby optimized the center of gravity and/or the rotary inertia of the bar head 100 of golf clubs.Because without any the hole, so structural integrity, durability, vibrational feedback and/or the sound feedback of the bar head 100 of golf clubs can be kept in second district 180, just as first district 170 without any the hole.

As mentioned above, hole 120 can be configured on the golf club head 100, and when batting part 140 is clashed into, can not damage structural integrity, durability, vibrational feedback and/or the sound feedback of the bar head 100 of golf clubs.From the redistribution of the maximization weight of top wall portion 142 be not by maximization hole 120 size (for example, on top wall portion 142, extend to rear end 136 from first bell curve 190 substantially, and extend to heel end 132 hearts or V-shape hole) from toe-end 130, for example, described in this article hole 120 can be configured to optimize the weight redistribution in top wall portion 142, keeps structural integrity, durability, vibrational feedback and/or the sound feedback of the bar head 100 of golf clubs simultaneously substantially.

Different with other golf club head, first distance D 1 can be measured with respect to high strike face 405, rather than the top 142 of the leading edge 141 of golf club head 100 or batting part 140.Equally, second distance D2 can measure with respect to high strike face 405, rather than the bottom 143 of the leading edge 141 of golf club head 100 or batting part 140 (for example, the leading edge 141 of golf club head 100 can be the bottom of batting part 140).In one example, for wide club head of golf (for example, golf club head 100), first distance D 1 can be less than or equal to 0.75 inch, and second distance D2 can be less than or equal to 1.3 inches.For the golf club head of golf course club head, golf mixing club head or other type, first and second distance D 1 and D2 can be less than or equal to 0.75 inch and 1.3 inches respectively.Though above-mentioned example has been described the concrete distance with respect to high strike face 405, the present invention can comprise other first distance D 1 and second distance D2.

Golf club head 100 can be included in the 3rd distance (D3) of extending between high strike face 405 and the 3rd 430.For example, the 3rd distance D 3 can be the length of golf club head.High strike face 405 and the 3rd 430 can be parallel to each other substantially.Therefore, first, second also can be parallel to each other substantially with the 3rd 410,420 and 430.The 3rd 430 rear end 136 that can comprise golf club head 100.In one example, the 3rd distance can be 4.0 inches.Correspondingly, first distance D 1 can be less than or equal to 18.75% of the 3rd distance, and second distance D2 can be less than or equal to 32.5% of the 3rd distance.For the golf club head of golf course club head, golf mixing club head or other type, first and second distance D 1 and D2 can be less than or equal to 18.75% and 32.5% of the 3rd distance D 3 respectively.Though above-mentioned example has been described the concrete distance with respect to the 3rd distance D 3, the present invention can also comprise other percentage of first distance D 1 and second distance D2.The present invention is not limited thereto.

Though above-mentioned example has been described the various parts and/or the surface of golf club head 100, golf club head 100 can not comprise some part and/or surface.For example, though top wall portion 142, bottom wall portion 144 and sidewall 146 are shown as independently surface in Fig. 1-4, but sidewall 146 can with top wall portion 142 or bottom wall portion 144 merge constitute hollow body 110 a surface (for example, body 110 can comprise top wall portion 142 and bottom wall portion 144, but does not comprise sidewall 146).In one example, bottom wall portion 144 and sidewall 146 can merge the single lower surface that constitutes body 110.Further, though bar neck interface 160 and bar neck interface transition portion 165 have been shown among Fig. 1-4, golf club head 100 can not comprise bar neck interface 160 and/or bar neck interface transition portion 165.In one example, golf club head 100 can comprise the chamber (not shown) that is positioned at body 110, is used to admit bar 198 (for example, the opening in chamber can flush with top wall portion 142).

Further, one or more holes 120 can be configured to alignment mark.In the example of Fig. 5, golf club head 500 can comprise toe-end 530, heel end 532, front end 534, rear end 536, top wall portion 542, first district 570 and second district 580.First and

second districts

570 and 580 are by bell curve 590 definition.Particularly, extend between rear end 536 and bell curve 590 in first district 570, and second district 580 can extend between front end 534 and bell curve 590.In order to redistribute the weight of golf club head 500, and do not damage its structural integrity, durability, vibrational feedback and/or sound feedback, first district 570 can comprise one or more holes, prevailingly with Reference numeral 522,526 and 528 expressions.In one example, hole 522 can be leg-of-mutton hole.Leg-of-mutton hole 522 can be located on the top wall portion 540 in first district 570, and between two lateral opening 526 and 528.Further, tri-angle-holed 522 can extend as alignment markers (alignment indicator) between rear end 565 and bell curve 590.Alignment markers can be indicated the position that golf club head 500 is aimed at golf.

Though figure 5 illustrates

lateral opening

526 and 528, be used for further optimizing the center of gravity and/or the rotary inertia of golf club head 500, golf club head 500 also can not comprise one or more lateral opening 526 and 528.Although figure 5 illustrates concrete shape, golf club head 500 can comprise the hole of circular port, square opening, slot and/or any other suitable shape.The article of method of the present invention, device and manufacturing are not limited thereto.

In another example as shown in Figure 6, for example, golf club head 600 can comprise toe-end 630, heel end 632, front end 634, rear end 636, top wall portion 642, first district 670 and second district 680.First and second districts 670 and 680 are by bell curve 690 definition.Specifically, first district 670 can extend between rear end 636 and bell curve 690, and second district 680 can extend between front end 634 and bell curve 690.In order to redistribute the weight of golf club head 600, and do not damage its structural integrity, durability, vibrational feedback and/or sound feedback, first district 670 can comprise prevailingly with Reference numeral 622,624,626 and 628 one or more holes of representing.Specifically, golf club head 600 can comprise first tri-angle-holed 622 and second tri-angle-holed 624.First and second tri-angle-holed 622 and 624 can be positioned at first district 670 of top wall portion 640, and between two lateral opening 626 and 628.Further, first and second tri-angle-holed 622,624 can be as alignment markers between rear end 665 and bell curve 690.Alignment markers can be indicated the position that golf club head 600 is aimed at golf.

First and second tri-angle-holed 622 and 624 size can equate or not wait.In one example, first tri-angle-holed 622 to the second tri-angle-holed 624 is big.Although in Fig. 6, less relatively tri-angle-holed (for example, second tri-angle-holed 624) with relatively large tri-angle-holed (for example, first tri-angle-holed 622) compare, more approach bell curve, but in golf club head 600, relatively large tri-angle-holed (for example, first tri-angle-holed 622) compare and more approach bell curve with relative less tri-angle-holed (for example, second tri-angle-holed 624).That is to say that first and second tri-angle-holed 622 and 624 can exchange its position with respect to bell curve 690.Select as another kind, golf club head 600 can comprise one or more flechette-types hole.The article of method of the present invention, device and manufacturing are not limited thereto.

With reference to figure 7, for example, golf club head 700 can comprise toe-end 730, heel end 732, front end 734, rear end 736, top wall portion 742, first district 770 and second district 780.First and

second districts

770 and 780 are by bell curve 790 definition.Specifically, extend between rear end 736 and bell curve 790 in first district 770, and extend between front end 734 and bell curve 790 in second district 780.In order to redistribute the weight of golf club head 700, do not damage simultaneously its structural integrity, durability, vibrational feedback and/or sound feedback again, first district 770 can comprise one or more holes (prevailingly with Reference numeral 722,724,726 and 728 expressions).Specifically, golf club head 700 can comprise first circular port 722 and second circular port 724.First and second

circular ports

722 and 724 can be arranged in first district 770 on the top wall portion 740, and between two lateral opening 726 and 728.Further, first and second circular ports 722,724 can be as alignment markers between rear end 765 and bell curve 790.Alignment markers can be indicated the position that golf club head 700 is aimed at golf.

First and second

circular ports

722 and 724 can equate or size does not wait.In one example, first circular port 722 is bigger with respect to second circular port 724.First and second circular ports 722.724 can be large and small or equal golf.(for example compare less circular port although in Fig. 7, have, second circular port 724) (for example than relatively big circular port, first circular port 722) more near the description of bell curve, golf club head also (for example can comprise relatively big circular port, first circular port 722) than the less circular port that compares (for example, second circular port 724) more near bell curve.That is to say that first and second

circular ports

722 and 724 can exchange its position with respect to bell curve 790.Select as another kind, golf club head 700 can comprise one or more flechette-types hole.The present invention is not limited thereto.

Though the concrete size and dimension in hole has been shown in the above-mentioned example, but the article of method described herein, device and manufacturing can comprise the hole of various sizes and/or shape, thereby provide the vibration and/or the sound feedback of optimization in response to bump, and keep or improve the structural intergrity and the durability of golf club head.Although the concrete number in hole has been shown among Fig. 1-7, body 100 can comprise more or less hole (for example, hole).Further, as following with reference to Fig. 8 and 9 in greater detail, one or more holes 120 can be capped or seal.

Further, though Fig. 1-7 shows general bar head or metal wood types of rod head (for example, wide rod, Fairway Woods etc.), the article of method described herein, device and manufacturing can be applicable to other suitable golf club head type.For example, the article of method described herein, device and manufacturing can be suitable for the golf club head of mixed type bar head or other adequate types.The article of method of the present invention, device and manufacturing are not limited thereto.

In the embodiment shown in fig. 8, handle 800 from casting body 110 (Fig. 1) formation golf club head 100 (step 810).As mentioned above, for example, body 110 can be by metal material manufacturing (for example, titanium, titanium alloy etc.).In order to optimize center of gravity and/or to increase rotary inertia, handle 800 and can be formed with one or more holes 120 (for example, Fig. 1 mesopore 122,124,126 and/or 128) (step 820).

Correspondingly, handling 800 can blind hole 120 (step 830), in one example, handles 800 and can handle blind hole 120 with the bladders mould.With reference to figure 9, for example, inserting thin slice 910 can be by suitable sicker (for example, epoxy resin) from inboard 920 sealing or the coverage hole 120 of body 110 (Fig. 1).The bladders (not shown) can be inserted body 110 by the opening (not shown), and this opening is positioned at or approaches top wall portion 142, bottom wall portion 114 and/or sidewall 146.Bladders can expand, and exerts pressure 930 thus on insertion thin slice 910, thereby engages with the one or more non-bore portion (with Reference numeral 1032 and 1034 expressions) of body 110.Specifically, inserting top 915 of thin slice 910 can be fixed on the bottom 944 of the bottom 942 of non-bore portion 932 of body 110 and non-bore portion 934.Correspondingly, after will inserting thin slice 910 and being fixed on the inside of body 110, can bladders be removed by opening.

Further, insert 950 can cover or blind hole 120 from the outside 960 of body 110.For example, insert 950 can be by light relatively metal manufacturing, such as thermoplastic, composite and/or other suitable lightweight materials.Each

non-bore portion

932 and 934 can comprise

sidewall

972 and 974 respectively.Correspondingly, top 915 and the

sidewall

972 and 974 of insertion thin slice 910 can constitute chamber 980.Insert 940 can be inserted chamber 980.

Replace above-described bladders mould to handle, can that is to say that insert 950 can insert thin slice 910 and support from body 110 inside 930 with outside 960 coverage holes 120 of insert 950 from body 110.Insert 950 can seal or coverage hole 120 by the

sidewall

972 and 974 that is individually fixed in

non-bore portion

932 and 934.

Get back to Fig. 8, bar neck interface 160 can admit first end of bar 198 to constitute golf clubs.(step 840) interfixes by gluing joining process (for example, epoxy resin) and/or other suitable joining process (for example, mechanical connection, soft soldering, welding and/or brazing) for bar 198 and body 110 (by bar neck interface 160).For forming golf clubs, second end of handle 199 receivability bars 198.Bar 198 and handle 199 can be by gluing joining process (for example, epoxy resin) and/or other suitable joining process interfix (steps 850).The present invention is not limited thereto.

Be described though handle 800, handle 800 and also be applicable to other golf club head with reference to 100 pairs of golf club heads.Further, although shown concrete execution sequence in Fig. 8, those actions can be with order execution At All Other Times.Two or more actions of for example describing in Fig. 8 can continuously, concomitantly or synchronously be carried out.

Though above-mentioned example is all relevant with the hole, the article of method described herein, device and manufacturing can comprise that the part of relative thin replaces the hole, thereby optimize the center of gravity and/or the rotary inertia of bar head.In the example depicted in fig. 10, golf club head comprises one or more first thickness parts 1010 (in the drawings prevailingly with

drawing reference numeral

1012 and 1014 expressions), and one or more second thickness part 1020 (in the drawings prevailingly with

drawing reference numeral

1022 and 1024 expressions).The first thickness part 1010 can comprise first thickness (T1), and the second thickness part 1020 can comprise second thickness (T2).Put it briefly, first thickness is partly than 1020 thick (that is T1＞T2), of the second thickness part.Though figure 10 illustrates the specific thickness of making peace, under the thicker situation of the first thickness part, 1010 to the second thickness parts 1020, the thickness of the first thickness part 1010 and/or the second thickness part 1020 can change.The present invention is not limited thereto.

Refer again to Fig. 1, golf club head 100 can comprise the combination of hole and thinner region, thus again from top wall portion and/or bottom wall portion distributed weight, and safeguard structural integrity, durability, vibrational feedback and/or the sound feedback of golf club head 100 simultaneously.In one example, top wall portion 142 can comprise one or more holes (for example, hole 120), and bottom wall portion 144 comprises one or more thinner region.In another example, top wall portion 142 can comprise the combination of hole and thin part.Bottom wall portion 144 also can comprise the combination of hole and thin part.The present invention is not limited thereto.

Although above-mentioned example is shown in the line that extends on top wall portion 142 and the bottom wall portion 144 respectively with first and second bell curves 190 and 195 (Fig. 1) between toe-end 130 and heel end 132, but first and

second bell curves

190 and 195 can form cross section 1100 between first 410 and second 420 (Fig. 4), as shown in figure 11.Specifically, first bell curve 190 thirdly 230 can represent the 4th between first and second 410 and 420 distance (D4).Distance D 4 can be first and second the distance poor (that is, D4=D2-D1).The present invention is not limited thereto.

As shown in figure 12, golf club head 1200 can comprise toe-end 1230, heel end 1232, front end 1234, rear end 1236, batting part 1240, top wall portion 1242, first district 1270 and second district 1280 and bell curve 1290.Specifically, extend between rear end 1236 and bell curve 1290 in first district 1270, and second district 1280 can extend between front end 1234 and bell curve 1290.For under the situation of the structural integrity that does not damage bar head 1200, durability, vibrational feedback and/or sound feedback, the weight of redistribution golf club head, first district 1270 can comprise in the drawings prevailingly with Reference numeral 1222,1226 and 1228 one or more holes of representing.

Golf club head also can comprise the 3rd district 1285.Specifically, the 3rd district 1285 can comprise coboundary 1220 and lower boundary 1230.For example, first bell curve 1290 can be the lower boundary 1230 in the 3rd district 1285.On top extend between boundary 1220 and the rear end 1230 in first district 1270, and second district 1280 can extend between lower boundary 1230 and front end 1234.Correspondingly, stress ratio first district 1270 that bear or stands in the 3rd district 1285 is big, but littler than second district 1280.

Specifically, the 3rd district 1285 can be compensated the hardness relevant with various golf (for example, the centre of sphere of golf).In one example, compare with relative hard golf, soft relatively golf can apply more stress for body 110 by batting part 140.In other words, hard and soft golf can cause onesize substantially stress in batting part 140.But compare with relative hard golf, soft relatively golf may cause the stress of longer time by batting part 140 on body 110, this is because compare with relative hard golf, and the distortion of soft relatively golf and/or compression are bigger.Consider the situation of softer golf,

hole

1222,1226 and 1228 can be between the coboundary 1220 and rear end 1236 in the 3rd district 1285.

On the contrary, compare with relative softer golf, harder relatively golf causes the time of stress shorter on body 110 by batting part 140.Consider this situation of harder relatively golf,

hole

1222,1226 and 1228 can be positioned between the lower boundary 1230 (for example, first bell curve 1290) and rear end 1236 in the 3rd district 1285.Again with reference to figure 5, for example, hole 522,526 and 528 can be between first bell curve 590 and rear end 536.The article of method of the present invention, device and manufacturing are not limited thereto.

Although the example of having described some method, device in this article and/or having manufactured a product, these examples do not limit their protection domain.On the contrary, content disclosed herein has covered on literal or has fallen into all methods, the device within the claim scope according to doctrine of equivalents and/or manufacture a product.

Claims

1. bar head comprises:

Extend between described front end and described bell curve in second district,

Described bell curve extends between described toe-end and described heel end.

2. bar head as claimed in claim 1, wherein, at least one in described one or more holes forms alignment markers.

3. bar head as claimed in claim 1, wherein, described one or more holes comprise circular port, tri-angle-holed, arrowhead form hole or have in the hole of two parallel edges and at least one EOC at least one.

4. bar head as claimed in claim 1, wherein, described one or more hole comprises first hole and second hole, described first hole has the first size and first shape, and described second hole has second shape and second size, and described first shape and second shape are basic identical, and described first size is greater than described second size.

5. bar head as claimed in claim 1, further comprise sidewall sections, described sidewall sections comprises at least one in described one or more hole, and described sidewall extends between described top wall portion and described bottom wall portion, and crooked between described toe-end and the described heel end.

6. bar head as claimed in claim 1, further comprise the 3rd district, described the 3rd district has lower boundary and coboundary, and wherein said lower boundary comprises described bell curve, extend between described toe-end and described heel end described coboundary, and between described rear end and described lower boundary.

7. bar head as claimed in claim 1, wherein said first district comprises one or more thinner region, described thinner region be positioned at described top wall portion and described bottom wall portion one of at least, and its each and other zone of described top wall portion and bottom wall portion compare thin.

8. bar head as claimed in claim 1, wherein bell curve can comprise first distance and the second distance with respect to described high strike face, and described first distance is equal to or less than 0.75 inch, and described second distance is less than or equal to 1.3 inches.

9. bar head as claimed in claim 1, wherein said bar head comprise at least one in the golf club head of rod golf club head, alley wood types of rod head and mixed type.

10. golf club head comprises:

Body, described body have toe-end, heel end, front end, rear end, batting part, top wall portion and bottom wall portion;

First stressed zone comprises one or more holes and extends that described bell curve is relevant with the mechanical load limit, and extends between described toe-end and described heel end between described rear end and bell curve; And,

Second stressed zone, described second stressed zone extends between described front end and described bell curve,

Wherein, when described batting part was subjected to clashing into, the mechanical load that described first stressed zone is subjected to was less than or equal to the mechanical load limit,

Wherein, when described batting part was subjected to clashing into, the mechanical load that described second stressed zone is subjected to was greater than the described mechanical load limit, and,

Wherein said bell curve extends variable distance from the high strike face, basic and the described batting partial parallel of described high strike face, described bell curve related with described toe-end first and and related second of described heel end between, and or the intermediate point place that is adjacent between described first and described second extend maximum distance away from described high strike face.

11. golf club head as claimed in claim 10, at least one in wherein said one or more holes be positioned at described top wall portion and described bottom wall portion one of at least.

12. golf club head as claimed in claim 10, at least one of wherein said one or more holes forms alignment markers.

13. golf club head as claimed in claim 10, wherein said one or more holes comprise circular port, tri-angle-holed, arrowhead form hole and have in the hole of two parallel edges and at least one curve at least one.

14. golf club head as claimed in claim 10, wherein said one or more hole comprises first hole and second hole, described first hole has the first size and first shape, described second hole has second shape and second size, described first shape and second shape are basic identical, and described first size is greater than described second size.

15. golf club head as claimed in claim 10, further comprise the 3rd district, described the 3rd district has lower boundary and coboundary, wherein said lower boundary comprises described bell curve, extend between described toe-end and described heel end described coboundary, and between described rear end and described lower boundary.

16. golf club head as claimed in claim 10, wherein said first district comprises one or more thinner region, described thinner region is arranged in described top wall portion and described bottom wall portion one of at least, and each described one or more thin parts are compared thin with other zone of described top wall portion and bottom wall portion.

17. golf club head as claimed in claim 10 one of at least extends 0.75 inch from described high strike face in wherein said first and second, described intermediate point extends 1.3 inches from described high strike face.

18. a method comprises:

19. method as claimed in claim 18, the step that wherein forms described one or more holes comprises the formation alignment markers.

20. method as claimed in claim 18, the step that wherein forms described one or more holes comprise in the hole that forms circular port, tri-angle-holed, arrowhead form hole and have two parallel edges and at least one curve at least one.

21. method as claimed in claim 18, the step that wherein forms described one or more holes comprises formation first hole and second hole, described first hole has the first size and first shape, described second hole has second shape and second size, wherein said first shape and second shape are basic identical, and wherein said first size is greater than described second size.

22. method as claimed in claim 18, the step that wherein forms described first district is included in going up one of at least in described top wall portion and the described bottom wall portion and forms one or more thinner region, and wherein each described one or more thin parts are compared thin with other zone of described top wall portion and bottom wall portion.

23. method as claimed in claim 18 further comprises and uses insert to cover each described one or more hole.

24. a golf clubs comprises:

Handle;

Bar with first end and second end, described bar engages with described handle at described first end; And

The bar head comprises toe-end, heel end, front end, rear end, batting part, top wall portion, bottom wall portion, first district and second district, and described bar head engages with described bar at described second end,

Wherein, described first district described top wall portion and described bottom wall portion one of at least on comprise one or more holes, and between described rear end and bell curve, extend, described bell curve with and the substantially parallel high strike face of described batting part be associated, when described batting part is subjected to clashing into, described first district has the lower mechanical load than described second district

Extend between described front end and described bell curve in described second district, and

Described bell curve extends between described toe-end and described heel end.

25. golf clubs as claimed in claim 24, at least one in wherein said one or more holes forms alignment markers.

26. golf clubs as claimed in claim 24, wherein said one or more holes comprise at least one circular port, tri-angle-holed, arrowhead form hole or have in the hole of two parallel edges and at least one EOC at least one.

27. golf clubs as claimed in claim 24, wherein said one or more hole comprises first hole and second hole, described first hole has the first size and first shape, described second hole has second shape and second size, described first shape and second shape are basic identical, and described first size is greater than described second size.

28. golf clubs as claimed in claim 24, wherein the 3rd district has lower boundary and coboundary, wherein said lower boundary comprises described bell curve, and extend between described toe-end and described heel end described coboundary, and between described rear end and described lower boundary.

29. golf clubs as claimed in claim 24, wherein said first district comprises one or more thinner region, described thinner region be formed at described top wall portion and described bottom wall portion one of at least, other zones of each described one or more thin parts and described top wall portion and bottom wall portion are compared thin.

30. golf clubs as claimed in claim 24, wherein said golf clubs comprise in the golf club head of rod golf club head, alley wood types of rod head and mixed type at least one.