CN101204618B

CN101204618B - Golf club head

Info

Publication number: CN101204618B
Application number: CN2007101408592A
Authority: CN
Inventors: J·J·雷; N·J·拉德克利夫; D·J·斯通; T·E·加纳; B·S·霍利; R·J·霍拉塞克; S·G·莱西; J·D·布伦斯基; K·谢菲尔; S·A·卡利尔; S·C·基恩; C·R·施内尔; D·E·罗伯茨; D·S·尼文; M·J·沃兰斯
Original assignee: Sumitomo Rubber Industries Ltd
Current assignee: Sumitomo Rubber Industries Ltd
Priority date: 2006-12-22
Filing date: 2007-08-10
Publication date: 2012-07-04
Anticipated expiration: 2027-08-10
Also published as: CN101204619B; CN101204618A; CN101234245B; CN101234245A; CN101204619A

Abstract

An exemplary golf club head having an increased amount of discretionary mass may be realized by utilizing improved drop angles, an improved average crown height, and/or articulation points. The discretionary mass may be placed low and deep in the club head to improve the location of the center of gravity as well as the inertial properties. A preferred break length may also be utilized to further improve the depth of the center of gravity. In one example, the center of gravity may be positioned to substantially align the sweet spot with the face center of the club head.

Description

Golf club head

The application has required the U.S. Provisional Patent Application No60/876 of submission on December 22nd, 2006,537 priority, and it is disclosed in this through the complete merging of reference.

Background technology

Along with the development of technology, wooden caput develops into typical " over dimensioning " metal caput most of modern golf clubs (driver) from relatively little persimmon glof club head.Although size and material are in recent years change, modern golf clubs can not overcome some shortcoming relevant historically with traditional wooden bat.

For making the golfer from golf club, obtain maximum performance, it is 180 to 250g caput that mass range usually is provided.Some part of caput quality keeps to the parts that structure support is provided.Residual mass is called free quality (discretionary mass), and it is distributed in the caput position that is oriented in hope with the inertia characteristics of improving caput and with CG tactfully.

In the golf clubs of routine, the increase of favourable CG position and the moment of inertia (MOI) receives the available quantitative limitation of free quality.For example attenuate caput wall and the effect that utilizes the free method for quality of increase of the routine of light material aspect available free quality, to obtain are little.Conventional golf clubs improves required CG position and the moment of inertia because of the finite quantity that receives obtainable free quality usually can not realize obtained performance.

Usually, golfer's trend naturally is around the excellent face center of caput, to impact golf.In most of golf clubs, excellent face center is when square stance the point that ceiling capacity transmits to take place on excellent face, and also is known as recovery coefficient (COR) " focus ".Though the batting at COR " focus " produces the other performance benefit that distance increases form; If but COR " focus " not with club face on do not take place caput rotation or engagement effect rum point-being also referred to as " dessert " aligns; Then uninevitable real estate is given birth to the most accurate course of action (ball flight), should " dessert " be impact rectangular projection face on of caput center of gravity (CG) at caput wherein.In current obtainable caput, because the position of caput center of gravity is high, so " dessert " usually is positioned at COR " focus " top.This disadvantageous CG orientation has produced such caput, i.e. these performance variable wherein, promptly relevant distance or the accuracy relevant with " dessert " with COR " focus " only one can in single golf hits, be maximized.

In addition, " dessert " position that this on the excellent face is high has produced statistics and has gone up disadvantageous ball contact pattern, and this causes directionality to hit conforming reduction.Golfer's trend naturally is the batting on every side at excellent face center fifty-fifty, and this has caused the ratio between batter's box and " dessert " to hope the distance that distance is bigger.The distance of this increase has enlarged caput rotation and engagement effect, thereby causes the loss of flying distance (carry distance) and precision.

Hit precision and distance also receives the influence of CG with respect to the degree of depth of excellent face.In the golf clubs, CG typically orientates as near excellent face in modern times.This shallow CG position prevent caput dynamically with bar to the bending of aliging with CG so that caput tilts and blind rod face with ball impact the time.In addition, shallow center of gravity has reduced the radius of turn of excellent face when off-centre impacts, and has therefore reduced hitting precision.

Summary of the invention

Therefore, there is the demand of golf club head to having increased free quality, having reduced the position of center of gravity in caput, increased the degree of depth of center of gravity in caput, made center of gravity and excellent face center-aligned and improved the MOI of caput.

Such benefit can be according to embodiments of the invention through utilizing the drop angle angle, recovering angle, average height and fracture highly to obtain.

Description of drawings

Only describe multiple enforcement through example referring now to following accompanying drawing, each figure is:

Fig. 1 is the top plan view of typical golf club according to an aspect of the present invention;

Fig. 1 a is the anterior elevational view of the golf club head of Fig. 1;

Fig. 1 b is the front perspective view of the golf club head of Fig. 1;

Fig. 2 is the anterior elevational view of the golf club head of Fig. 1;

Fig. 3 is the anterior elevational view of the golf club head of Fig. 1;

Fig. 3 a is the front perspective view of the golf club head of Fig. 1;

Fig. 3 b is the top plan view of the golf club head of Fig. 1;

Fig. 3 c is heel (heel) the side front view of the golf club head of Fig. 1;

Fig. 4 is the heel lateral front view of the golf club head of Fig. 1;

Fig. 5 is the front side front view of the golf club head of Fig. 1;

Fig. 6 is the heel lateral front view of the golf club head of Fig. 1;

Fig. 6 a is the heel lateral front view of the golf club head of Fig. 1 and the second typical golf club head according to another aspect of the present invention;

Fig. 7 is the heel lateral front view of the golf club head of Fig. 1;

Fig. 7 a is the heel lateral front view of the golf club head of Fig. 1 and the second typical golf club head according to another aspect of the present invention;

Fig. 8 is the anterior elevational view of the golf club of Fig. 1;

Fig. 9 is the anterior elevational view of the golf club head of Fig. 1;

Figure 10 illustrates non-arc contact according to another aspect of the present invention;

Figure 11 a is the heel lateral front view of typical golf club head according to another aspect of the present invention;

Figure 11 b is the front side front view of the golf club head of Figure 11 a;

Figure 11 c is the heel lateral front view of typical golf club head according to another aspect of the present invention;

Figure 11 d illustrates the non-arc contact of Figure 10;

Figure 11 e is the heel lateral front view of the golf club head of Figure 11 c;

Figure 12 is the top plan view of the golf club head of Fig. 1;

Figure 13 is the anterior elevational view of the golf club head of Fig. 1;

Figure 14 is the heel lateral front view of the golf club head of Figure 11 a;

Figure 15 is the heel lateral front view of the golf club head of Figure 11 a;

Figure 16 is the heel lateral front view of the golf club head of Figure 11 a.

The specific embodiment

As shown in Fig. 1 and Fig. 1 a, term " reference position " is used herein to points out the caput position, and its place plugs in sheath 100 and has the plug in sheath center line 102 at virtual vertical plane 104 interior orientations, and this vertical plane 104 is orientated substantially and is parallel to the face of impacting 106.As shown in Fig. 1 a, plug in sheath center line 102 and be substantially 60 degree with respect to bar base angle degree (lie angle) α of level ground 108.In addition, excellent face angle θ (Fig. 1) is with respect to being substantially 0 degree through excellent face center 112 and the virtual vertical plane 110 that is parallel to excellent face 106 substantially.The reference position can be according to United States Golf Association and R&A Rules Limited; " Procedure for Measuring the Club Head Size of Wood Club "; Revision 1.0; Section 6.0.1,6.6&6.7 (on November 21st, 2003) confirms.Only if additionally point out, all parameters are in the reference position with caput 101 and explain.

Rod face center 112 (Fig. 1 & Fig. 1 a) such as this use can use " Procedure for Measuring the Flexibilityof a Golf Club Head " at UnitedStates Golf Association; Revision 2.0, and the USGA method of describing among the Section 6.1 (on March 25th, 2005) is located.

With reference to figure 1b, for confirming the purpose according to the moment of inertia (MOI) of the golf club 101 of various embodiments of the present invention, the initial point of three-dimensional system of coordinate with x, y and z axle is at the center of gravity CG place of caput 101, and wherein caput 101 is in the reference position.The z axis usually is parallel to the face of impacting 106 and extends through CG in the vertical direction with respect to ground 108.The y axis usually is parallel to the face of impacting 106 and extends through CG perpendicular to the z axis.The x axis extends through center of gravity and perpendicular to z axis and y axis.Corresponding M OI can confirm as follows:

(1) around the MOI of z axis (I _Zz) can use at United States GolfAssociation and R&A Rules Limited; The method of describing among " the Procedure for Measuring theMoment of Inertia of Golf Club Heads ", Revision 1.0 (on April 12nd, 2006) is confirmed.

(2) around the MOI of y axis (I _Yy) use measuring instrument to confirm; For example use Collinsville by Inertia Dynamics Inc.of; The model that Connecticut makes is that the measuring instrument of MOI-005-104 is confirmed, this measuring instrument is designed for the moment of inertia of measuring the detection part with the mass property that is similar to golf club head and overall size.With reference to figure 2c, typical measuring instrument provides and can hold the horizontal jig plate 120 of plugging in sheath fixture 118.Caput 101 rotates through 90 degree realizations in the correct orientation of inserting on the sheath fixture 118 through the caput 101 that will be oriented in the reference position; Make toe (toe) be directed upwards towards and the CG of caput 101 aligns with pivot axis 114 substantially in vertical direction, this pivot axis 114 is in the vertical direction of measuring instrument.These measurements can use the known method of persons skilled in the art to carry out.

With reference now to Fig. 3,, plug in sheath center 122 such as this use refer to the crosspoint between plane surface 123 and the plug in sheath center line 102.Plane surface 123 is characterized as the end of plugging in sheath 100.

With reference to figure 3 and Fig. 3 a,, comprise an X for the purpose of location according to the CG of the golf club head 101 of various embodiments of the present invention _Hosel, the axle Y _HoselWith axle Z _HoselThe initial point of second three-dimensional system of coordinate at 122 places, plug in sheath center, wherein caput 101 is in the reference position.Axis Z _HoselUsually be parallel to the face of impacting 106 and extending through the sheath center 122 of inserting with respect to ground 108 vertical direction.Axis Y _HoselBe parallel to the face of impacting 106 substantially and perpendicular to Z _HoselAxis extends through the sheath center 122 of inserting.Axis X _HoselPerpendicular to Z _HoselAxis and Y _HoselAxis extends through the sheath center 122 of inserting.The CG of caput can locate as follows:

(1) with reference to figure 3b, CG is positioned at first horizontal range, 124 places apart from virtual vertical plane 126.Plane 126 is parallel to excellent face 106 orientations substantially and passes through to plug in sheath center 122.Distance 124 is the shortest horizontal ranges of 126 to CG from the plane;

(2) with reference to figure 3b, CG is positioned at second horizontal range, 128 places apart from virtual vertical plane 130.Plane 130 is substantially perpendicular to excellent face 106 orientations and through plugging in sheath center 122.Distance 128 is the shortest horizontal ranges of 130 to CG from the plane; With

(3) with reference to figure 3c, CG is positioned at first vertical range, 132 places apart from ground 108.Distance 132 is the shortest vertical ranges of 108 to CG from ground.

With reference to figure 4, such as this use, dessert 134 refers to the outer surface of excellent face 106 and substantially perpendicular to the crosspoint between the dummy line 136 of excellent face 106 and the CG through caput 101.

With reference to figure 5, such as this use, culminating point 138 refers to virtual vertical planes 140 and impacts the crosspoint between the top of face 106.Plane 140 is orientated substantially perpendicular to excellent face 106 and through excellent face center 112.

With reference to figure 6, such as this use, the length that fractures 142 refers to be in substantially the horizontal range perpendicular to the direction of excellent face 106 at the height 144 with respect to ground 108, this horizontal range is between the outer surface of the rear section 148 of virtual vertical line 146 and caput 101.Virtual vertical line 146 extends to ground 108 from culminating point 138.

With reference to figure 7, such as this use, term " average height " refers to a plurality of vertical ranges between path 174 and ground 108, for example F in the vertical plane of the rearmost point 149 that comprises culminating point 138 and caput 101 ₁... F _nAverage.Vertical range F ₁... F _nCan and put any horizontal increment of sentencing the progress with any hope between 149 on summit 138, the increment that for example equals 5mm separates.

With reference to figure 8; Such as this use; Rod face height 154 refers to the vertical range between first plane 156 and second plane 158 when caput 101 is in the reference position; Wherein first plane 156 is parallel to ground 108 and through impacting the peak of face 106, and second plane 158 is parallel to ground 108 and the minimum point 162 through impacting face 106.

With reference to figure 9, such as this use, excellent face length degree 164 refers between heel end 166 and toe end 168 along the horizontal range of the horizontal plane 170 through excellent face center 122.

Such as this use; Term " non-arc contact " refers to the contact of two lines, wherein: the end points of arcuate line and the end points of the straight line end points of end points and another arcuate line of (Figure 10 a and Figure 10 a '), the arcuate line end points of end points and another straight line of (Figure 10 b and Figure 10 b ') or straight line meet (Figure 10 c) that meets that meets.

With reference to figure 11a and Figure 11 b, such as this use, joint (articulation) point 172 refer at least one along the path 174 point, otherwise wherein the curvature in path 174 from recessed change into protrusion or.Path 174 is characterised in that the intersecting of top section of virtual vertical plane 140 and typical caput 143.As shown in Figure 11 b, virtual vertical plane 140 is orientated substantially perpendicular to excellent face 106 and through excellent face center 112.With reference to returning Figure 11 a, path 174 is the border with culminating point 138 and rear portion point 149 laterally.When whether the curvature of confirming path 174 changes, suppose that 174 non-arc contact is arc along the path for all.For example, the non-arc contact 178 of each of caput 143 as in Figure 11 c diagram substitute with virtual joints 180 with infinitely small radius, as shown in Figure 11 d and Figure 11 e.

With reference to Figure 12; Such as this use; The shortest horizontal range that total length 182 refers between the first virtual vertical plane 185 and the second virtual vertical plane 186; Wherein the first virtual vertical plane 185 be parallel to substantially the face of impacting 106 and through culminating point 138, the second virtual vertical planes 186 be parallel to plane 185 and through on the caput 101 with impacting face 106 relative rear point 149.

With reference to Figure 13; Such as this use; The shortest horizontal range that overall width 190 refers between the first virtual vertical plane 192 and the second virtual vertical plane 194; Wherein projecting point 196, the second virtual vertical planes 194 are substantially perpendicular to excellent face 106 and the side direction through heel 176 projecting point 198 farthest farthest perpendicular to impacting face 106 and the side direction through toe 184 substantially for the first virtual vertical plane 192, and point 198 is identical with the height of putting 196.

With reference to Figure 14, such as this use, drop angle angle (drop angle) β refers to that the crosspoint between its center line 202 and line 200 and the path 174 is tangent by virtual vertical line 200 and line 202 formed angles.Virtual vertical line 200 174 extends to ground 108 at the specific horizontal range place that is no more than summit 138 apart from culminating point 138 and puts the horizontal range between 149 from the path.Path 174 is characterized as the intersecting of top section of virtual vertical plane 140 and typical caput 143.As shown in Figure 14, virtual vertical plane 140 is orientated substantially perpendicular to excellent face 106 and through excellent face center 112.When from heel lateral front view observation caput 143, any drop angle angle β always measures on vertical line 200 right sides.

With reference to Figure 14, such as this use, recover angle (recovery angle) Φ and refer to that the crosspoint between its center line 202 and line 200 and the path 174 is tangent by virtual vertical line 200 and line 202 formed angles.Virtual vertical line 200 174 extends to ground 108 at the specific horizontal range place that is no more than summit 138 apart from culminating point 138 and puts the horizontal range between 149 from the path.When from heel lateral front view observation caput, any recovery angle Φ always measures in vertical line 200 left sides.

Such as this use; Term " volume " can use at United States GolfAssociation and R&A Rules Limited; " Procedure for Measuring the ClubHead Size of Wood Clubs "; Revision 1.0, and the method described in the Section 5 (on November 21st, 2003) is confirmed.

Referring to figs. 1 to Figure 16 and table hereinafter, illustrate and described typical caput according to various embodiments of the present invention.

In one aspect of the invention, can for example make the bizet depression realize improved CG position through changing the geometry of bizet to increase available free quality.The free quality of this increase can be advantageously divided to be equipped with in caput and is reduced CG.As how much go up the result who changes bizets and the amount of the free quality that obtain can be with the drop angle angle (Figure 14) of bizet, (Figure 11 is a) relevant to recover angle (Figure 14), average height (Fig. 7) and/or artis number.Through changing these variablees, can realize the increase of free quality according to embodiments of the invention.

The typical caput 143 of the bizet that has earthward 108 depressions for example, has been shown in Figure 14.Bizet comprises a plurality of drop angles angle β and recovers angle Φ, promptly by line 200 and tangent line 202 along culminating point 138 with put the angle that the path 174 between 149 forms.This improved bizet orientation has increased the free quality of caput 143 with respect to the caput of conventional golf club, because required quality still less to form bizet.The amount of the free quality that is caused can depend on that the drop angle angle β of caput and recovery angle Φ change.With several relevant according to an exemplary embodiment of the present invention parameters shown in the following table 1 and table 2.

Table 1

Table 2

According to an aspect of the present invention; When the horizontal range between culminating point 138 about 2cm and about 11cm is measured; The drop angle angle β of caput 143 can be preferably between about 35 degree and about 87 degree; More preferably between about 40 degree and about 85 degree, and most preferably between about 50 degree and about 75 degree.In one aspect of the method; When the horizontal range between culminating point 138 about 2cm and about 4cm is measured; Drop angle angle β can be preferably between about 40 degree and about 60 degree; More preferably between about 50 degree and about 60 degree, and most preferably between about 41.4 degree and about 47.8 degree.Further, when apart from culminating point 138 about 2cm with when approximately the horizontal range between the 11cm is measured, the recovery angle Φ of caput 143 can be preferably between about 92 degree and about 145 degree, and more preferably between about 97 degree and about 140 degree.In one aspect of the method, when when the horizontal range between culminating point 138 about 2cm and about 4cm is measured, recovering angle Φ can be between about 90 degree and about 110 degree.Through utilizing the drop angle angle β and recovery angle Φ, the free quality that can obtain to increase in the above scope.The free quality that increases can be located lowly in caput 143 and deeply improving the CG position again, thus cause increasing hit precision and distance.

In one aspect of the method, as shown in Fig. 7 A, caput 101 can utilize average height, and promptly a plurality of between path 174 and ground 108 are suitable for increasing vertical range average of free quality capable of using, for example F ₁... F _nAverage.For example, the part at least through making bizet is 108 depressions and therefore reduce the average height with respect to conventional golf club earthward, have required quality still less to form bizet, have therefore produced the free quality that increases.Further, vertical range F ₁... F _nCan and put any increment of sentencing progress between 149 on summit 138 with any hope, for example the increment of 5mm separately, as shown in the table 3.List in table 3 with the relevant parameter of several exemplary embodiments according to the present invention.

Table 3

According to another aspect of the present invention, typically the average height of caput 143 can be preferably at about 35mm with approximately between the 45mm, more preferably between about 36mm and about 41mm, and most preferably between about 37.7mm and about 40.4mm.Can in caput 143, reallocate to improve the mass property of caput through the free quality of utilizing the increase that aforesaid typical average height causes.

As in an alternative embodiment of the invention shown in Figure 11 A, comprise that along the path caput 143 of at least one artis 172 of 174 has the free quality of increase.Through the artis 172 of utilizing certain number, the bizet shape of the distribution of weight that can realize being of value to favourable.For example, as in Figure 11 A, illustrating, the bizet 150 of depression can cause through two artis 172 are merged.The concave shape of bizet can be suitable for increasing free quality capable of using through reducing the desired quality of formation bizet.Such weight can be located in caput 143 to increase MOI or CG is positioned at more favourable position again.This can allow more fault-tolerant caput, thereby causes improved precision and the distance of hitting.

The improvement position of CG is the free quality through increasing usually, promptly through utilizing drop angle angle according to an embodiment of the invention, recovering quality that angle, average height and artis obtain and place lowly as far as possible and realize deeply in typical caput 143.As shown in fig. 6, for example the conventional caput of caput 101 since the geometry of base portion 141 at it free weight to be placed low and deeply ability to limited.The base portion of conventional caput, for example base portion 141 usually raises with respect to ground 108, this stoped free quality place as close as possible ground 108.Therefore, in like the shown another aspect of the present invention of Fig. 6 A, have base portion 139 near the length 142 that fractures on ground 108 and can be utilized and be positioned in typical the caput 143 low as far as possible and dark with the free quality that will increase.List in table 4 with relevant according to an exemplary embodiment of the present invention parameter.

Table 4

In some embodiments of the invention, caput 143 can have the length 142 that fractures between about 50mm and the about 110mm at about 1mm and vertical height 144 places between about 15mm with respect to ground 108.With respect to about 5mm on ground 108 and about vertical height 144 places between the 10mm; The length that fractures 142 can be preferably approximately between 90mm and the about 110mm; More preferably between about 96.5mm and about 140mm, and most preferably between about 100mm and about 130mm.According to embodiments of the invention, the length that fractures 142 permissions are placed lowly free quality in caput 143 and are dark, thereby have produced improved CG position.

With reference to figure 4 and Figure 15, in another aspect of the present invention, the free quality of increase can for example fracture length 142 and in caput 143, locate lowly through utilization, makes dessert 134 align with COR " focus " substantially, promptly aligns with excellent face center 112.Through reducing CG and dessert 134 being alignd with COR " focus " 112, can realize the benefit of these performance variable simultaneously, i.e. the precision of the increase that hits distance and be correlated with of the increase relevant with COR " focus " 112 with " dessert " 134.Therefore, can realize providing the improved caput 143 that hits precision and distance.

Refer again to Figure 15, another aspect of the present invention is for example in caput 143, to locate deeply free quality through the utilization length 142 that fractures, and to increase the CG degree of depth, promptly increases from CG to the horizontal range that impacts face 106.The typical caput 143 that has with the CG of the degree of depth of such increase makes bar dynamically to the bending of aliging with CG, with ball impact the time, tilt (loft) caput 143 and blind rod face 106.In addition, therefore the radius of turn of rod face 106 when the dark CG of caput 143 can increase eccentric the bump has been improved and has been hit precision.

List in table 5 with the relevant CG position coordinates of several exemplary embodiments according to the present invention.

Table 5

With reference to figure 3b and Fig. 3 c and table 5; In some embodiments of the invention; First horizontal range 124 can be preferably at about 12mm with approximately between the 38mm, more preferably between about 15mm and about 36mm, and most preferably between about 25mm and about 35mm.Second horizontal range 128 can be preferably at about 55mm with approximately between the 78mm, more preferably between about 58mm and about 74mm, and most preferably between about 58mm and about 66mm.First vertical range 132 can be preferably between about 20mm and about 33mm, more preferably at about 20mm with approximately between the 28mm, more preferably between about 22mm and about 30mm, and most preferably between about 25mm and about 30mm.

Except that improving the CG position, some free weights can be located in excellent face again, so that excellent face is higher and wideer.Big excellent face for example can be given the confidence that the golfer increases.Improved confidence like this possibly cause the caput speed that increases, and this can improve total carry.In addition, some free weights also can location around the rear portion of shell, strategy ground.This can increase (the I around the MOI of vertical axis _Zz) and around the MOI of horizontal axis (I _Yy), and can finally improve the performance when off-centre is clashed into through reducing Draw/miss tendency.

Table 6 has been listed for the measured value according to the moment of inertia of several exemplary embodiments of the present invention, excellent face height and excellent face length degree.

Table 6

With reference to figure 1b and table 6, in some embodiments of the invention, I _YyCan preferably be at least 2300gcm ², more preferably at about 2300gcm ²With about 3300gcm ²Between, and most preferably at about 2700gcm ²With about 3300gcm ²Between.I _ZzCan preferably be at least 3700gcm ², more preferably at about 3700gcm ²With about 4700gcm ²Between, or most preferably at about 3800gcm ²With about 4600gcm ²Between.

With reference to figure 8 and Fig. 9 and table 6, in some embodiments of the invention, excellent face height 154 can be preferably at about 43mm with approximately between the 61mm, more preferably between about 45mm and about 58mm, and most preferably between about 48mm and about 58mm.Excellent face length degree 164 can be preferably at about 94mm with approximately between the 115mm, more preferably between about 96mm and about 112mm, and most preferably between about 98mm and about 110mm.

With reference to Figure 16, be depicted as the typical golf club 208 that has wooden caput 143 and can comprise through plugging in the bar 206 that sheath 100 is connected to caput 143.Caput 143 can comprise by impacting the hollow shell that face 106 and main part 204 form.Hollow shell can have heel part 176, toe part 184, bizet part 150 and base portion part 141.

Further, caput 143 can be formed by the material of wide region, comprises metal, polymer, pottery, compound and timber.For example, caput of the present invention can be formed by stainless steel, titanium or graphite fibre stiffener rings epoxy resins, and persimmon wood or lamination maple.In typical an enforcement, caput 143 is formed by fibre strengthening or fiberglass-reinforced plastic (FRP) at least in part, is known as in addition and strengthens thermosetting plastics (RTP), reinforcement thermosetting resin (RTR) and glass-reinforced plastic (GRP).

In a preferred exemplary embodiments, main part 204 can provide the excellent face 106 that is formed by SP700 β titanium, and SP700 β titanium is the 4.5-3-2-2 titanium alloy (Ti-4.5%Al-3%V-2%Mo-2%Fe) of α/β level.In alternate embodiment; The part of caput 143 can be formed by other titanium alloys; Comprise the high strength titanium alloy that forges 10-2-3 (Ti-10%V-2%Fe-3%Al) for example or 15-3-3-3 (Ti-15%V-3%Cr-3%Sn-3%Al); Casting 6-4 alloy (Ti-6%Al-4%V), or other titanium alloys of 3-2.5 titanium (Ti-3%Al-2.5%V) or 15-3-3 titanium (Ti-15%Mo-5%Zr-3%Al) for example.In other embodiments, can use Forgingother and the casting alloy that comprises stainless steel and aluminium.

In certain embodiments, the volume of caput can be at least about 200cm ³, more preferably at about 300cm ³With about 500cm ³Between, and most preferably at about 310cm ³With about 400cm ³Between.

Can conceive the multiple club that will comprise bar 206 and use with various embodiments of the present invention, bar 206 for example can be processed by steel, stainless steel, aluminium, carbon or graphite fibre stiffener rings epoxy resins, boron fibre stiffener rings epoxy resins or the titanium of chromium plating.Bar 206 can provide handle, is for example formed by molded synthetic rubber or parcel leather.

In addition, the present invention also relates to have the golf club and the golf club group of golf club head of the present invention described here.For example, this group can be the wood golf bat group that can have the metal golf caput.

Though multiple aspect of the present invention, it should be understood that various features of the present invention in above description and can use separately or with any combination.Therefore, this invention not only is limited to the specific preferred embodiment of describing at this.Further, the field those skilled in the art that it should be understood that the present invention and be subordinate to can expect within the spirit and scope of the present invention variation and modification.All favourable modifications in the scope of the invention and spirit that therefore, can easily be obtained from the disclosure content of illustrating at this by persons skilled in the art will be comprised as further embodiment of the present invention.Therefore scope of the present invention limits in subsidiary claims.

Claims

1. golf club head with reference position, this golf club head comprises:

The face that impacts that comprises culminating point;

The main part relevant with the face that impacts, this main part comprise at least one drop angle angle;

This at least one drop angle angle is measured with respect to the first virtual vertical line that the path on main part extends to ground, and the first virtual vertical line is on the said path of locating between the about 2cm of culminating point horizontal range and the about 4cm; With

This at least one drop angle angle is between about 40 degree and about 60 degree, and wherein caput is in the reference position.

2. golf club head according to claim 1, wherein the drop angle angle is between about 50 degree and about 60 degree.

3. golf club head according to claim 1, wherein the drop angle angle is between about 41.4 degree and about 47.8 degree.

4. golf club head according to claim 1, wherein main part comprises that at least one is with respect to this recovery angle of first virtual vertical line measurement between about 90 degree and about 110 degree.

5. golf club head according to claim 1, wherein said path comprises at least two artis.

6. golf club head according to claim 1 further comprises:

The plug in sheath relevant with main part, plug in sheath have plug in sheath center; With

Impacting the face orientation and passing through to insert the about 25mm of virtual vertical plane at sheath center and the center of gravity at the first horizontal range place between about 35mm apart from being parallel to substantially.

7. golf club head according to claim 1 wherein hits and takes taxi excellent face height between about 45mm and about 58mm, and excellent face width degree is approximately between 94mm and the about 115mm.

8. golf club head according to claim 1 further comprises:

Initial point is positioned at the virtual coordinate system at golf club head center of gravity place, and coordinate system has x axis, y axis and z axis;

Wherein caput is 3700gcm at least around the MOI of z axis ²

9. golf club head according to claim 1 further comprises:

Wherein caput is 2300gcm at least around the MO of y axis I ²

10. golf club head according to claim 1, wherein the volume of caput is 200cm at least ³

11. golf club head according to claim 1, the face that wherein impacts further comprise excellent face center with substantially with the consistent dessert in excellent face center.

12. golf club head according to claim 1 further comprises:

Extend to the second virtual vertical line on ground from culminating point; Wherein main part has at about 5mm and approximately about 90mm of measuring with respect to the second virtual vertical line of the vertical height place between the 10mm and the approximately length that fractures between the 110mm apart from ground, and wherein caput is in the reference position.

13. golf club head according to claim 1 further comprises:

Top section on the main part and rearmost point;

Substantially perpendicular to impacting face and comprising culminating point and the virtual vertical plane of rearmost point; With

Path between culminating point and rearmost point, this path are characterised in that the intersection between the top section of virtual vertical plane and main body;

Wherein said average height in the path between culminating point and the rearmost point is at about 35mm with approximately between the 45mm.

14. golf club head according to claim 1 further comprises:

Extend to the second virtual vertical line on ground from culminating point; Wherein main part has the length of measuring with respect to the second virtual vertical line at the vertical height place between about 5mm and the about 10mm apart from ground that fractures between about 96.5mm and about 140mm, and wherein caput is in the reference position.

15. golf club head according to claim 14, wherein the drop angle angle is between about 41.4 degree and about 47.8 degree.

16. golf club head according to claim 14, wherein main part comprises that at least one is with respect to the recovery angle of the first virtual vertical line measurement between about 90 degree and about 110 degree.

17. golf club head according to claim 14 further comprises:

18. golf club head according to claim 14 wherein hits and takes taxi excellent face height between about 45mm and about 58mm, and excellent face width degree is approximately between 94mm and the about 115mm.

19. golf club head according to claim 14 further comprises:

Wherein caput is 3700gcm at least around the MOI of z axis ²

20. golf club head according to claim 14 further comprises:

Wherein caput is 2300gcm at least around the MOI of y axis ²

21. golf club head according to claim 14, wherein the volume of caput is 200cm at least ³

22. golf club head according to claim 14, the face that wherein impacts further comprise excellent face center with substantially with the consistent dessert in excellent face center.

23. golf club head according to claim 14, the length that wherein fractures apart from ground about 5mm and approximately the vertical height between the 10mm be in about 90mm and approximately between the 110mm.

24. the golf club head with reference position, this golf club head comprises:

Have excellent face center with the face that impacts of the consistent substantially dessert in excellent face center;

The main part relevant with the face that impacts; With

Initial point is positioned at the virtual coordinate system at golf club head center of gravity place, and coordinate system has x axis, y axis and z axis,

Wherein caput is 3700gcm at least around the MOI of z axis ²With

At least one extends to the drop angle angle between about 40 degree and about 60 degree of the first virtual vertical line measurement on ground with respect to the path on main part; Wherein caput is in the reference position, the first virtual vertical line apart from culminating point about 2cm and approximately the horizontal range place between the 4cm be positioned on the said path.

25. golf club head according to claim 24, wherein the drop angle angle is between 41.4 degree and 47.8 degree.

26. golf club head according to claim 24, wherein main part comprises that at least one is with respect to the recovery angle of the first virtual vertical line measurement between about 90 degree and about 110 degree.

27. golf club head according to claim 24, wherein said path comprises at least two artis.

28. golf club head according to claim 24 further comprises:

29. golf club head according to claim 24 wherein hits and takes taxi excellent face height between about 45mm and about 58mm, and excellent face width degree is approximately between 94mm and the about 115mm.

30. golf club head according to claim 24 further comprises:

Wherein caput is 2300gcm at least around the MOI of y axis ²

31. golf club head according to claim 24, wherein the volume of caput is 200cm at least ³

32. golf club head according to claim 24 further comprises:

Extend to the second virtual vertical line on ground from culminating point; Wherein main part has at about 5mm and approximately about 90mm of measuring with respect to this second virtual vertical line of the vertical height place between the 10mm and the approximately length that fractures between the 110mm apart from ground, and wherein caput is in the reference position.

33. golf club head according to claim 24 further comprises:

Top section on the main part and rearmost point;

The average height in the path between wherein said culminating point and the rearmost point is approximately between 35mm and the about 45mm.

34. the golf club head with reference position, this golf club head comprises:

Comprise excellent face center with the face that impacts of the consistent substantially dessert in excellent face center;

The main part relevant with the face that impacts; With

Initial point is positioned at the virtual coordinate system at golf club head center of gravity place, and coordinate system has x axis, y axis and z axis, and wherein caput is 2300gcm at least around the MOI of y axis ²With

35. golf club head according to claim 34, wherein the drop angle angle is between 41.4 degree and 47.8 degree.

36. golf club head according to claim 34, wherein main part comprises that at least one is with respect to the recovery angle of the first virtual vertical line measurement between about 90 degree and about 110 degree.

37. golf club head according to claim 34, wherein said path comprises at least two artis.

38. golf club head according to claim 34 further comprises:

39. golf club head according to claim 34 wherein hits and takes taxi excellent face height between about 45mm and about 58mm, and excellent face width degree is approximately between 94mm and the about 115mm.

40. golf club head according to claim 34 further comprises:

Wherein caput is 3700gcm at least around the MOI of z axis ²

41. golf club head according to claim 34, wherein the volume of caput is 200cm at least ³

42. golf club head according to claim 34 further comprises: