CN104043235A

CN104043235A - Golf club head with flexure

Info

Publication number: CN104043235A
Application number: CN201410098279.1A
Authority: CN
Inventors: 托马斯·奥林·班尼特; 斯蒂芬妮·贝济拉; 理查德·L·克莱格霍恩; 乌代·V·德神穆科; 诺厄·德拉克鲁兹; 达瑞尔·C·加尔文; 查尔斯·E·戈尔登; 玛尼·伊内丝; 约翰·莫林; 斯蒂芬·S·墨菲; 马克·C·梅尔赫姆; 盖瑞·兹梅尔曼
Original assignee: Acushnet Co
Current assignee: Acushnet Co
Priority date: 2013-03-16
Filing date: 2014-03-17
Publication date: 2014-09-17
Anticipated expiration: 2034-03-17
Also published as: KR20140113414A; JP2016182356A; CN104043235B; JP6027993B2; JP6378253B2; KR102080817B1; JP2014180540A

Abstract

Provided is a gold club head. The gold club head comprises a top head, a bottom part, a hosel, a surface and a bending part. The bending part provides smoothness during the impact process between the golf club head and a gold ball, and vibration can be adjusted with a predetermined frequency after the impact.

Description

The glof club head with bend

the related application of cross reference

The application is the part of the U.S. Patent application No.13/720885 that submits on December 19th, 2012 case that continues, do not examine at present co-pending, described U.S. Patent application No.13/720885 is the part of the U.S. Patent application No.13/618963 that submits on September 14th, 2012 case that continues, and careful co-pending at present, its disclosed content comprises in this application by reference.

Technical field

The present invention relates to a kind of improved glof club head.More specifically, the present invention relates to a kind of glof club head with submissive portion.

Background technology

The complexity of golf club design is known.The specification of each parts of club (that is, bar head, axostylus axostyle, handle and subassembly thereof) directly affects the performance of club.Therefore by changing design specification, golf clubs can be adjusted to has specific Performance Characteristics.

The design of club head studies for a long period of time.What in club head design, consider more emphatically is loft, bar base angle, and face angle, horizontal plane projection, vertical plane roller, center of gravity (CG), inertia, material is selected and whole head weight.Although this basic standard group is the focus of golf clubs engineering science normally, several other design aspects also must solve.Can regulate the indoor design of club head to realize concrete characteristic, for example, comprise perimeter weight in hosel or axostylus axostyle accessories apparatus, club head and the filler in hollow club head.

Glof club head also must be firm, thereby stand repeatedly to occur in the impact in the collision process between golf clubs and golf.The load occurring in this event procedure can produce the peak force that surpasses 2000 pounds moment.Therefore, a main challenge is permanent deformation or the inefficacy that design face and the body of rod prevent material yield or break and cause.The conventional hollow metal rod of being manufactured by titanium typically has the face thickness over 2.5mm, thereby guarantees the structural intergrity of club head.

Player seeks the combination of aluminum medal wood and golf conventionally, and it hits ultimate range and lands accurately.The distance that ball is advanced after impact is that the size and Orientation by the translational velocity of ball and the rotary speed of ball or rotation represents.Environmental condition comprises atmospheric pressure, humidity, temperature and wind speed, has further affected the flight of ball.But, the control of these environmental activities Bu Shou golf equipment manufacturer.The accuracy that golf lands is also permitted multifactorial driving.Some in these factors design owing to club head, for example the elasticity of center of gravity and face.

USGA (USGA) is the responsible institution of U.S.'s golf rule, and there is the specification for golf performance in this mechanism.These specifications have been stipulated unified golf size and weight.It is 250 feet per second+2% (or maximum initial velocities of 255 feet per seconds) that USGA rule is limited to the initial velocity of golf after the impact of regulation.In order to realize farther golf travel distance, the coefficient of resilience after the ball speed after impact and ball-club impact must maximize, and remains in this rule simultaneously.

Conventionally, golf travel distance is with giving the function of the total kinetic energy of ball in club head impact process, ignores ambient influnence.In impact process, kinetic energy shifts and is stored in club head and as viscoelastic strain energy and is stored in ball as elastic strain energy from club.After impact, the energy of storing in ball and club transforms with the translation of ball and club and the form of rotary speed the energy that reverses.Because collision is not perfectly elastic, therefore the energy dissipation of a part is in the viscoelasticity relaxation of club head vibration and spheroid.Viscoelasticity relaxation is the material property of all polymeric materials for the manufacture of golf.

The viscoelasticity relaxation of ball is a kind of additional-energy, and it depends on deformation rate.For this effect is minimized, must reduce deformation rate.This can be by allowing more face in impact process to be out of shape to realize.Because flow of metal can be purely elastic, so the strain energy of storing in face returns to ball after impact, improves thus the output speed of ball after impacting.

Multiple technologies method can make the even attenuation of face for changing the distortion of face, comprising, enclose ribs and variable thickness etc. for the face of attenuation.These designs should have enough structural integrities and stand impact repeatedly, and face can permanently not be out of shape.Conventionally after impact, the significantly variation that conventional club head also shows original ball speed, this depends on the impact position on the face of club.Therefore, this area still needs such club head, and it has larger " happy district ", can obtain the region of substantially uniform high original ball speed.

The breakthrough of technique in recent years provides farther distance for general golfer, the thinner thickness of the shell of for example unifying by casting and then use for example titanium of lighter material, keep constant weight or even lighter in manufacture larger club head.Equally, the face of club has become very thin constantly.Thinner face maximizes the coefficient of resilience (COR).When impacting, the face of resilience is larger, and the energy that is applied to ball is larger, has increased thus length.In order to make face thinner, manufacturer has transferred forging, punching press or machined metal face, and it is conventionally firmer than casting face.Conventional way is by welding, the metal covering of forging or punching press to be assembled on the bottom surface of bar head or bar head.Thinner face is easier to lose efficacy.The invention provides a kind of new mode, the face of club is provided, it has bending and the resilience of expectation when impacting, and makes thus COR maximize.

Summary of the invention

The present invention relates to a kind of glof club head that comprises bend, it has changed compliant characteristic than known glof club head.

In one embodiment, glof club head comprises Guan Ding, bottom, sidewall, hosel and face.Guan Ding is defined as the upper surface of glof club head, and bottom is defined as the lower surface of glof club head, and sidewall is to extend between hat top and bottom portion.This bottom comprises emission part, bend and rear portion.Described face is defined as surperficial and crossing at leading edge place with emission part that ball impacts.It is spaced apart at afterbody that described bend impacts surface by emission part and ball.Described bend comprises antetheca (it extends in the chamber that this glof club head defines), extends to the rear wall in described chamber, and described antetheca is connected at place, summit with rear wall.It is the 20%-50% of CG-Z-fc distance that described bend and ball impact spaced surface distance, and described CG-Z-fc is apart from being to extend to the distance of afterbody from glof club head front portion along the geometric surface center of glof club head and the horizontal Z axis between gravity center of golf club head.

Accompanying drawing explanation

Openly in the accompanying drawings, wherein identical Reference numeral represents identical element to the preferred feature of the present invention in institute's drawings attached, wherein:

Fig. 1 is the side view of a kind of embodiment of glof club head of the present invention;

Fig. 2 is the plane of bottom of the glof club head of Fig. 1;

Fig. 3 is cross-sectional view, corresponding to the line 3-3 of Fig. 2;

Fig. 4 is the cross-sectional view that the golf club head of Fig. 1 divides, and it shows as the thin A of portion in Fig. 3;

Fig. 5 is the perspective view that the golf club head of another embodiment of the present invention divides;

Fig. 6 is cross-sectional view, corresponding to the line 6-6 of Fig. 5.

Fig. 7 is the side view of the glof club head of another embodiment of the present invention;

Fig. 8 is the side view of opposite side of the glof club head of Fig. 7;

Fig. 9 is the side view of the glof club head of another embodiment of the present invention;

Figure 10 is the side view of opposite side of the glof club head of Fig. 9;

Figure 11 is the side view of the glof club head of another embodiment of the present invention;

Figure 12 is the bottom plan view of the glof club head of Figure 11;

Figure 13 is cross-sectional view, corresponding to the line 13-13 of Figure 12;

Figure 14 is the side view of the glof club head of another embodiment of the present invention;

Figure 15 is the bottom plan view of the glof club head of Figure 14;

Figure 16 is the perspective view of the glof club head of another embodiment of the present invention;

Figure 17 is the exploded view of the golf clubs of Figure 16;

Figure 18 is the cross-sectional view of the golf clubs of Figure 16;

Figure 19 is the cross-sectional view of the selectable structure of glof club head of Figure 16;

Figure 20 is the perspective view of the glof club head of another embodiment of the present invention;

Figure 21 is the exploded view of the glof club head of Figure 20;

Figure 22 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 23 is the perspective view of the glof club head of a kind of embodiment of the present invention;

Figure 24 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 25 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 26 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 27 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 28 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 29 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 30 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 31 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 32 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 33 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 34 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 35 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 36 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 37 is the cross-sectional view that the golf club head of another embodiment of the present invention divides;

Figure 38 is the upward view of the glof club head of another embodiment of the present invention;

Figure 39 is the side view of the glof club head of Figure 38;

Figure 40 is that the glof club head of Figure 38 is along the obtained cross-sectional view of line 40-40;

Figure 41 is the front view of the glof club head of one embodiment of this invention;

Figure 42 is the side view of the glof club head of Figure 41;

Figure 43 is that the glof club head of Figure 41 is along the obtained cross-sectional view of line 41-41;

Figure 44 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 45 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 46 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 47 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 48 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 49 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 50 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 51 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 52 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 53 is the cross-sectional view that the golf club head of a kind of embodiment of the present invention divides;

Figure 54 is the cross-sectional view that the golf club head of another embodiment of the present invention divides;

Figure 55 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 56 is the upward view of the glof club head of Figure 55;

Figure 57 is the upward view of the glof club head of another embodiment of the present invention;

Figure 58 is the front view of glof club head, and it has shown dimensional characteristic and coordinate system wherein used;

Figure 59 is the top view of the golf clubs of Figure 58; With

Figure 60 is the cross-sectional view that the golf club head of Figure 58 divides.

The specific embodiment

Except in operation embodiment, or unless otherwise expressly provided, otherwise whole digital scopes, amount, value and percentage, for example, for other value of material, moment of inertia, position of centre of gravity, loft and shaft angle and the following part of description, can be read as by wording " approximately " as prefix, even if term " approximately " does not occur it being like this together with this value, amount or scope yet.Therefore, unless the contrary indication, otherwise the digital parameters of setting forth in the following description book and additional claim is similar to, its can look for according to the present invention acquisition expectation performance and change.At least, not plan limits the scope of claim by doctrine of equivalents, and each digital parameters should be at least according to the numerical value of recorded significant digits with by explaining by the common method rounding up.

Although the present invention is set to digital scope and the parameter of wide region, be similar to, at the numerical value described in specific embodiment, as far as possible accurately report.But all numerical value has comprised the error that the standard deviation that exists in they thermometricallies separately must form in essence.In addition,, when when this sets forth the digital scope of different range, can be expected that and can use any combination that is included in these values in exemplified value.

The coefficient of resilience or " COR " are the tolerance of collision rate.COR is separating rate and the ratio of closing speed.As an example, for example, for impacting the golf that leaves golf tee, COR can determine with following formula:

(M _ball(V _ball-after-V _ball-front) ₊m _club(V _ball-after-V _club-front))/M _club(V _club-front-V _ball-front)

Here,

V _club-afterrepresented the speed of club after impact;

V _ball-afterrepresented the speed of ball after impact;

V _club-frontrepresented the speed (for USGA COR condition be null value) of club before impact; With

V _ball-frontrepresented the speed of ball before impact.

Because the initial velocity of ball is 0.0 in collision process, because it fixes on golf tee,

Therefore this formula is simplified to below:

(M _ballv _ball-after+ M _club(V _ball-after-V _club-front))/M _club(V _club-front)

COR depends on shape and the material property of collision body conventionally.The COR of best elastic impact is one (1.0), and this expression does not have energy loss, and the COR that the nonelastic or best plasticity of the best is impacted is zero (0.0), and this represents that collision body does not separate afterwards in the impact that has produced maximum energy loss.Therefore, high COR value shows larger ball speed and distance.

Referring to Fig. 1-4, show a kind of embodiment of glof club head 10 of the present invention.Club head 10 comprises such structure, and it has improved when being subject to golf and impacting, particularly when basifacial is subject to clashing into, and the behavior of club.Club head 10 is hollow bodies, and it comprises hat top 12, bottom 14, skirt section 16 or sidewall, face 18 and hosel 22, and described sidewall extends between hat top 12 and bottom 14, and described 18 provides ball to impact surperficial 20 hosels.Should be understood that skirt section 16 can comprise the peripheral part of hat top 12 and bottom 14, they are crooked towards each other forms the upper surface of glof club head and the transition between lower surface.This hollow body has defined inner cavity chamber 24, and it can be vacant or can be by the filling of its part.If it is filled, preferably inner cavity chamber 24 is filled with foam or other low specific gravity material.In addition, glof club head 10 comprises at least one weight installing component 34, so that the overall weight of glof club head can change and/or therefore position of centre of gravity can change, and the weight installing component of any number can be included on the optional position on glof club head.

When club head 10 is when addressing position, hat top 12 provides the upper surface of glof club head and the lower surface that bottom 14 provides glof club head.Extend between hat top 12 and bottom 14 in skirt section 16, and formed the periphery of club head.Face 18 provides the most forward ball to impact surface 20 and has comprised that the periphery that is connected to hat top 12, bottom 14 and skirt section 16 seals chamber 24.Face 18 is included in toe 26 and the heel 28 on face 18 geometric center offsides.Hosel 22 stretches out and the syndeton for golf clubs axostylus axostyle (not shown) is provided from hat top 12 and the skirt section 16 of the heel 28 of vicinal face 18.

Hosel 22 can have through hole or blind hole hosel structure.Concrete, hosel 22 is tube element normally, and it can extend through from hat top 12 chamber 24 to club head 10 in the bottom of bottom 14 or it can end at the position hat top 12 and bottom 14.In addition, the near-end of hosel 22 can end at to be preced with top 12 concordant, but not as illustrated in fig. 1 and 2, extends outwardly beyond hat push up 12 from club head.

Inner cavity chamber 24 can have any volume, but be preferably greater than 100 cubic centimetres, and this glof club head can have mixing, alley or rod type structure.The quality of preferred club head of the present invention 10 is greater than about 150g, is less than about 220g, although club head can have any suitable weight for given length, the overall weight of expectation is provided and swings weight.Described rod head body can be formed by punching press, forging, casting and/or moulding part, and it is by welding, soldering and/or adhere to each other.Glof club head 10 can consist of titanium alloy, any other suitable material or combination of different materials thing.In addition any part that, the high-density matter weight element that for example tungsten forms can be connected to glof club head is bottom for example.

Face 18 can comprise face insert 30, itself and face periphery 32, and for example face-flange, combines.Face periphery 32 has defined the opening for receiving plane inserts 30.Face insert 30 is preferably connected by welding on periphery 32.For example a plurality of chads or lappet (not shown) can be used to locating surface inserts 30 to form support, or face insert can be tack welded to suitable position, and then face insert 30 and periphery 32 can pass through laser or the combination of plasma welding integral.Face insert 30 can for example be made by grinding, casting, forging or punching press and shaping such as titanium, titanium alloy, carbon steel, stainless steel, beryllium copper and carbon fibre composite and their combination by any suitable material.In addition, can form respectively hat top 12 or bottom 14, and be connected in other parts of described rod head body.

The thickness of face insert 30 is preferably about 0.5mm-4.0mm.In addition, inserts 30 can be uniform thickness or variable thickness.For example face insert 30 can have thicker center and thinner external zones.In another embodiment, face insert 30 can have two or more different thickness, and the transition between thickness can be radioactive or progressively.Selectable, face insert 30 can increase or reduce towards toe 26, heel 28, hat top 12 and/or bottom 14 thickness.Can be understood as, impacting one of surface or rear surface or both can having of the ball of face 18 is curve, ladder or smooth at least partly, and changes the thickness of face insert 30.

As mentioned above, club head 10 comprises structure, and it,, when clashing into golf, particularly, when the lower impact golf of face, has improved the behavior of club.Bend 36 is to form in the forward part in Guan Ding, bottom and/or skirt section.Bend 36 is folds of an elongation, and it extends upward to toe side at heel conventionally, and forms in the forward part of bottom 14.

Bend 36 is flexible conventionally in front/rear direction, and provide flexible portion in the club head 10 away from face 18, so that except local buckling, when face 18 impacts golf, it allows at least with a part of translation of Mian18Wei unit and rotation.Described glof club head is designed to have to the vibration mode of two kinds of visibly different faces between about 3000Hz-6000Hz, and bend is configured to increase the different vibration modes of the second of face conventionally.During first surface vibration mode is mainly included in golf center of impact face, the local buckling of face.The deflected profile of the second surface vibration pattern generally includes the deflection of whole that is similar to accordion, and the performance of the impact of the decentre between the improvement face of being provided for and golf.

Conventionally, bend 36 also configures the rigidity that is used for keeping the bottom 14 in Guan Ding/bottom direction, so that the sound of glof club head is not subject to obvious impact.Conventionally, the lower rigidity of bottom in Guan Ding/bottom direction can make the tone of the sound that club head produces reduce, and does not conventionally wish to reduce this tone.

Compared to other method, bend 36 allows not change size and/or the shape of face 18, and makes front portion (the comprising face 18) bending of club.Concrete, the glof club head body of a part for vicinal face is designed at impact process Elastic crooked.This elasticity reduces the reduction of ball speed, and has reduced reverse, otherwise it is positioned at experience in the pellet impact lower than desirable impact position.Desirable impact position is that ball impacts upper such position, surface, it intersects with the axle that impacts surperficial quadrature with ball, and it extends through the center of gravity of this glof club head, and as a result of desirable impact position is usually located in the distance of about 0.5mm-5.0mm on geometric surface center.By bend 36 is provided in bottom 14, it is close to face 18, and 18 when the position impact golf lower than desirable impact position face to face, and described club head reduces the reduction of ball speed, and has reduced reverse.Therefore, for identical swing characteristic, at desirable impact position and the ball that impacted in club women's head-ornaments of the present invention downstream by more farther than what be subject to that ball that conventional club head impacts in uniform impingement position advances.It is useful especially that bend 36 is arranged in bottom 14, because desirable impact position is usually above the position at the geometric surface center of the golf clubs of metal wood type.So most region is usually located at below desirable impact position.In addition, golf player tends to impact golf with face downstream conventionally.Yet similarly effect, provides the club head 10 with bend, described bend is in other parts of club head 10, and it impacts from geometric surface center towards bend for making.For example have the impact property that the club that is configured in the bend in hat top can improve ball, the impact of described ball is between Guan Ding and geometric surface center.

In one embodiment, provide bend 36, it is substantially parallel with the leading edge 38 of the club head 10 of at least a portion, so that it is conventionally crooked with leading edge, and starts selected distance D described bend 36 is provided impacting surface 20 from ball.Preferably in the distance D impact surface 20 30mm apart from ball in, provide bend 36, more preferably impact the 20mm on surface 20 apart from ball in, and the more preferably about 5.0mm-20.0mm of distance.For less glof club head, for example, with those glof club heads of Fairway Woods or combination construction, preferably in the 10mm that impacts surface 20 apart from ball, provide bend 36.

Bend 36 consists of the first element 40 and the second element 42.The first element 40 is connected in the back edge of bottom 14 forward emission part 46, and bends to inner cavity chamber 24 from bottom 14.The second element 42 is connected on the leading edge of the part after bottom 14 is leaned on, and also from bottom 14, bends to inner cavity chamber 24.On summit, 44 places are connected each other with the end of isolated the first element 40 in bottom 14 and the second element 42.Preferably this bend is extend and extend on the direction of toe at common heel.

Select the size of bend 36 that flexibility desired in pellet impact process is provided.Bend 36 has height H, width W and curling length C, as shown in Figure 4.Height H is extended in Y direction between the summit 44 of bottom 14 and outer surface.Width W is the width of bottom split shed, and it is produced by bend 36, and between bend 36 and the binding site of bottom 14, extends on z direction of principal axis.Curling length C is extended in Z-direction, and extends between the forward binding site of the forward binding site of bend 36 and bottom 14 and itself and summit 44.Preferably the height of bend 36 is greater than 4.0mm, is preferably about 5.0mm-15.0mm, more preferably about 6.0mm-11.0mm.In addition, bend 36 preferable width are greater than 4.0mm, are preferably about 5.0mm-12.0mm, more preferably about 7.0-11.0mm.This bend also has the wall thickness of about 0.8mm-2.0mm, and these sizes are preferably extended at least 25%fi spoon length of the length of x-axle in whole club head.In addition, the first element 40 is bent inwardly into inner cavity chamber from bottom, and its preferred radius of curvature is about 20.0mm-45.0mm.Following table 1 has shown the size of the embodiment of the present invention, and it shifts for the pellet impact lower than the desirable impact position of glof club head provides more effective energy, and so higher COR.

Table 1: bend size

?	Highly [mm]	Width [mm]	Curling length [mm]
				The embodiment of the present invention 1	10.0	10	13
The embodiment of the present invention 2	6.5	10	13
				The embodiment of the present invention 3	10.0	8	13
The embodiment of the present invention 4	6.5	8	13
				The embodiment of the present invention 5	5.0	8	13

The embodiment of the invention described above comes Analysis deterrmination for the COR of glof club head and the effect of vibratory response with finite element analysis.Concrete, will there is no the club head (that is, benchmark) and embodiments of the invention contrast of bend.Table 2 has gathered described contrast.

Table 2: contrast

In above-mentioned table, " additional mode " refers to a kind of vibration shape, or eigentone, unless there is bend, otherwise there is not described " additional mode ".Conventionally additional mode is rendered as face portion with respect to other partial rotation and the deflection of golf clubs.Concrete, embodiments of the invention comprise bend, and it extends past a part of bottom, and described additional mode comprises the rotation at the interface of face between face and hat top, so that bend deflection.Regulate bend, so that additional mode occurs in the frequency of about 2900Hz-4000Hz, and more preferably in the frequency of about 3600Hz, occur, this frequency is by analysis for being that to improve ball after impact the most effective aspect fast.In fact, the moment after impact, the adjusting result in the width W of bend is with the frequency sinusoidal variations of about 2900Hz-4000Hz.If additional mode occurs in the frequency higher or lower than this scope, in fact ball speed can be lower than benchmark embodiment (it does not comprise bend).To the embodiment of the present invention 1, use FEA to analyze, determine and regulate bend to provide frequency lower than 2900Hz, during in particular for the additional mode of about 2157Hz, make ball speed be reduced to the glof club head (it does not comprise bend) lower than benchmark.In addition, comprise that bend really up to the mark provides such glof club head, it does not comprise additional mode, as shown in the embodiment of the present invention 5, and only provides ball speed minimum after impact to increase.

The emission part 46 of bottom 14 extends between bend 36 and leading edge 38.Emission part 46 preferable configuration are for making golf impulsive force be transferred to bend 18, and the not obvious bending of emission part 46.For example emission part is carried out to orientation, crooked so that it not too easily produces.Concrete, with the plane of departure of the emission part 46 center tangents of bottom 14 (in the two direction of head/tail and heel/toe) with respect to the angle of ground level, be angle [alpha].Angle [alpha] is preferably less than or equal to the loft of glof club head while addressing, so that the angle that the surface of emission and ball impact between surface is generally equal to or is less than 90 °, so that emission part 46 can be crooked compared with I in pellet impact process.

Bend 36 can consist of any suitable mode.For example bend 36 can be used as bottom 14 integral part and casts.Selectable, bend 36 can punching press or is forged into bottom part.In addition, this bend can be by comprising that the region and the machined recess that thicken form so that this thickened areas forms bend.For example, the groove of expectation can be provided with rotary grinding method, rotary grinding method is open description in the U.S. Patent No. 8240021 of announcing on August 14th, 2012, as be administered to the groove of face, but can use the method, by increasing the profile of rotating polishing tool size and change cutter, come machined to there is the bend of the profile of expectation.Conventionally, the method has been used the instrument with rotating shaft, and it is parallel to bottom, and perpendicular to the leading edge of glof club head and cut end, its contoured produces the profile of bend expectation.Then described instrument moves along cutting path, and it is conventionally parallel to leading edge and moves.As after another option in greater detail, the bend that independent bend parts can be increased to bottom further regulates the bend of bottom, as illustrated in Figures 5 and 6.

As shown in the embodiment of Fig. 1, the face of this glof club head can comprise face insert, and described inserts passes through punching press, forging and/or machined individually, and is connected on glof club head body.Selectable, whole face can be used as a part for even shell and comes punching press, forging or casting, as illustrated in Figures 5 and 6, thus without by independent face insert in conjunction with or permanent being fixed on described body.As further selecting, face can be a part for face assembly punching press or that forge, face cup for example, and it comprises the part in bottom, Guan Ding and/or skirt section.In a kind of like this embodiment, face assembly is connected on the remainder of club head body apart from approximately 0.2 inch-1.5 inches of facial planes.Preferably this face assembly comprises the emission part of bottom, and it extends to bend, or described assembly comprise that emission part also comprises bend.

In another embodiment, as illustrated in Figures 5 and 6, glof club head 60 is hollow bodies, and it comprises hat top 62, bottom 64, the skirt section 66 of extending between hat top 62 and bottom 64, face 68 (it provides ball to impact surface 70) and hosel 69.This hollow body has defined inner cavity chamber 74, and it can be vacant or can be filled wholly or in part.

Bend 76 is to form in the forward part in bottom, but it can form alternatively in Guan Ding and/or skirt section.Preferably bend 76 is the folds that extend, conventionally its at heel, the side to toe extends upward, and form in the forward part in the bottom 64 of glof club head 60 bodies.Bend 76 provides the flexible portion from face 68 club head 60 backward, while making face to face 68 to impact golf, and except possessing flexibility, can be with the translation of Mian68Wei unit or the rotation of at least a portion.

Compared to other method, bend 76 allows not change size and/or the shape of face 68, and makes front portion (the comprising face 68) bending of club.Described flexibility reduces the reduction of ball speed, otherwise will experience mistakenly hit, that is, pellet impact position is away from desirable impact position, and less for the impact rotation lower than desirable impact position.For example, by the bend 76 providing in bottom 64, it is close to face 68, and club head makes in pellet impact position that ball prompt drop is low to be reduced during lower than the position of desirable impact position.Therefore during use,, for identical swing characteristic, it is farther that the ball being impacted in the face downstream of club head of the present invention is advanced the ball that on the face of the club head than conventional, uniform impingement position is hit.

In one embodiment, the setting of bend 76 makes it substantially parallel with at least a portion of club head 60 leading edges 78, and is arranged on apart from ball and impacts in 70 a certain distance D of surface.Preferably in the distance D in ball impacts surface 70 30mm, provide bend 76, more preferably in ball impacts the 20mm on surface 70 and most preferably in 10mm.

In embodiments of the invention, bend 76 consists of the first element 80, the second element 82 and three element 83, and is conventionally configured to be connected to the independent parts on bottom 64.The first element 80 is connected in the back edge of the forward emission part 65 in bottom 64, and bend into inner cavity chamber 74 from emission part 65.The second element 82 is connected to bottom 64 by the leading edge of rear section, and also from bottom 64, bend into inner cavity chamber 74.On summit, 84 places are connected to each other in the end of the first element 80 and the second element 82 (itself and bottom 64 spaced apart).Preferably this bend is conventionally being extended and is extending on the direction of toe by heel.Bend 76 can use machanical fastener in conjunction with, weld or be connected on bottom 64, and the material of bend 76 can be selected from the material with multiple density, Young's modulus and size, and a plurality of bends with different quality and rigidity are provided.In addition, bend is configured to independent parts, and allow to repair the bend of damage by changing bend, and the method that allows bend to be different from glof club head remainder builds, for example, by forging, build the remainder that described bend passes through molded construction glof club head.

Be similar to embodiment above, select the size of bend 76, the elastic bending of the expectation of response pellet impact is provided.Bend 76 definition height H, width W and curling length C.Preferably the height of bend 76 is greater than 4mm, be preferably about 5mm-15mm, and width is greater than 4mm, is preferably about 5mm-10mm, and wall thickness is about 0.8mm-2.0mm, and those sizes are preferably extended at least 25% length of the length of X-axis in whole club head.

Bend 76 comprises three element 83, and it can be for regulating the flexibility of bend 76.Three element 83 can be connected to inner surface (as directed) or the outer surface of bend 76, and the local rigidity that has increased bend 76.Three element 83 preferably consists of such material, the proportion of described material at least lower than the first element 80 and the second element 82 one of them.Three element 83 can for example be used binding agent to be attached to, or for example by securing member mechanical bond, be welded or soldered to the first element 80 and the second element 82.Three element can consist of any metal material or nonmetallic materials, and described metal material is aluminium for example, and described nonmetallic materials are carbon fibre composite or polyurethane for example.

Can select position, size and the number of the bend in glof club head that the behavior of expectation is provided.For example can comprise a plurality of bends, as shown in the glof club head 90 of Fig. 7 and 8.Glof club head 90 has hollow body structure, and it is defined by bottom 92, hat top 94, skirt section 96, face 98 and hosel 100 conventionally.Hat bending pars convoluta 102 is arranged in 94 front portions, hat top, and bottom bend portion 104 is arranged in the front portion of bottom 92.Each bend 102,104 is preferably shaped and size turns to that bend is such as the aforementioned.

In other embodiments, can comprise such bend, it is looped around a part of glof club head body around or is looped around around whole glof club head body.As shown in Figures 9 and 10, glof club head 110 has hollow body structure, and it is by bottom 112, hat top 114, skirt section 116, face 118 and hosel 120 definition.Bend 122 forms in glof club head front portion, and glof club head periphery around.Bend 122 forms conventionally in the plane of facial plane that is parallel to glof club head 110.Distance between bend 122 and face 118 can regulate local effect along its length variations, that is, bend 122 provides flexible for this glof club head.For example the bend 122 of certain part can be farther than other partial distance faces 118.As shown in the figure, in one embodiment, the heel of bend 122 and toe are farther with respect to bottom and the hat top partial distance face 118 of bend 122.The size that in addition, also can change bend 122 regulates bend 122 to offer the local effect of this glof club head flexibility.As directed, the bend 122 of part can have different height, width and/or curling length, changes the behavior of bend 122 these parts.

In other embodiments, submissive bend can be combined with composite material, light density cladding element, as shown in Figure 11-13.For example glof club head 130 has hollow body structure conventionally, and it defines by bottom 132, hat top 134, skirt section 136, face 138 and hosel 140.Glof club head 130 also comprises bend 142, and it forms in the front portion of the bottom 132 of glof club head 130.Covering 144 is also included within glof club head 130, and it is configured to cover bend outer surface.

Covering 144 is a strip material normally, and it strides across bend 142 and is arranged to base closed bend 142.Can be by covering 144 sizes, so that it covers the bend 142 of part or all, and it can extend in the part that does not comprise bend of glof club head 130.For example as shown in FIG. 11 and 12, covering 144 extends across and is positioned at the bend 142 of bottom on 132 and by its covering.In addition, covering 144 has formed a part of skirt section 136 and hat top 134.Preferably covering 144 consists of such material, and it is different from the material in bottom 132, hat top 134 and skirt section 136.Thereby covering 144 is by welding, soldering or adhere in those adjacent parts and be connected in the part that glof club head 130 is adjacent.Preferably this bend and covering by titanium alloy for example beta-titanium alloy form, and width is about 2.0mm-20.0mm, and thickness is about 0.35mm-2.0mm.

Help to control when being placed on match ground in bottom glof club head address position and eliminate the less desirable aesthetic appearance of bend described in the two covering be all helpful.Concrete, described covering can regulate visual the angle of this glof club head when bar head is placed on match ground by changing the contact-making surface of glof club head.Described covering can be configured to glof club head periphery to hat apical ring around, and can replace a part of periphery material to produce the structure of low-density, thereby other self-defining quality, lower and/or darker position of centre of gravity and higher inertia torque are provided, have therefore improved performance and apart from potentiality.

Effectively, covering provides hat top compliance and bend that bottom compliance is provided.As another kind, select, covering can be removed from bend, so that it only provides compliance at glof club head in the part away from bottom.In such embodiments, the size of parts is preferably in the scope described in Figure 11-13.

Referring now to Figure 14 and 15, describe glof club head 150, it comprises bend 162, and this bend, along the heel of glof club head, the variation of spatial relationship has occurred to toe length and facial plane.Due in pellet impact process, the geometry of golf clubs women's head-ornaments is in conjunction with being applied to the round-shaped of stress on face, the bottom of face conventionally at heel to the stress that has experienced different magnitudes on the different position of toe.Conventionally the part of glof club head in heel and toe end experienced than the direct lower stress of the part below face geometric center of this golf clubs, and stress gradient is transferred to the stress on the bottom in bend 162 regions.Change bend with respect to the position of the leading edge in facial plane and/or crosspoint, face/bottom, carry out the relative quantity corresponding to the stress at different piece place.For example preferably more close facial plane and glof club head leading edge of the heel of bend and toe so that those parts more may experience bending,, under lower stress condition, is even also particularly like this in the impact process of off-centered ball.

Glof club head 150 has hollow body structure, and it defines by bottom 152, hat top 154, skirt section 156, face 158 and hosel 160.Bend 162 is to form in the front portion of glof club head, and conventionally along this glof club head, at heel, to toe side, extends up through bottom and skirt section.Bend 162 generally includes core 164, toe 166 and heel 168.As mentioned above, the part of bend 162 arranges with the various spatial relationships with respect to club head face plane, thereby makes core 164 from club head face plane than toe 166 and heel 168 leans on more.In addition, bend 162 comprises the extension 170,172 of heel and toe, and they 156 extend back along skirt section respectively from heel and toe 168,166.The extension 170,172 of heel and toe also can extend back and converge on certain position of skirt section or bottom.

In other embodiments, bend mainly provides by the structure of composite material.Referring to Figure 16-18, glof club head 180 has hollow body structure conventionally, and it defines by bottom 182, hat top 184, skirt section 186, face 188 and hosel 190, and comprises bend 192.Bend 192 is included in the front portion of glof club head 180, and can be used as tube element and build, as directed, is placed on face portion 194He opisthosoma and divides between 196, so that bend 192 has formed adapter ring.Select the rigidity of this ring, make club head face whole deflection to occur accordingly with the deflection in the local generation of shock point.Be similar to previous embodiments, regulate bend 192 to make to impact and given the vibration that is about 2900Hz-4000Hz along the frequency of bend.As additional means, select the performance of described ring to control and optimize COR and matching characteristic time (CT), along the value of face, be directed to especially the pellet impact away from desirable impact position place.

Bend 192 consists of such material, and it provides than face portion 194 adjacent parts and opisthosoma and has divided 196 lower Young's modulus.Preferably bend 192, face portion 194He opisthosoma divide 196 to be to consist of such material, and it can for example be easy to combination by welding.For example face portion 194He opisthosoma divides 196 preferably the first titanium alloy, to consist of, and bend 192 consists of beta-titanium alloy, as described in more detail below.As shown in figure 18, bend 192 can be configured so that thickness that its thickness is substantially equal to adjacent part and to make the outer surface of bend and the outer surface of adjacent part concordant.Selectable, as shown in figure 19, bend 192a can be configured so that thickness is different from adjacent part and makes the outer surface of bend 192a is recessed than adjacent part.As another option, this bend can be configured so that the outer surface of bend is than adjacent part projection or rising.

Selectable, carbon composite cyclization can be incorporated to bend 192, it provides lower rigidity.The structure of joint, the geometry of ring (for example ring width and thickness, it can change along with its position in ring), ring position, fiber alignment, resinous type and resin content percentage is whole parameters, select these parameters to optimize the flexibility of bend 192, so that the ball speed of output improves along with the club head face of rod, keep the durability of this glof club head simultaneously.Preferably carbon composite bend being attached to adjacent metal club head face part and adjacent metal opisthosoma divides.As an example, the ring width of this bend can be that about 12.0mm-20.0mm and thickness are about 0.5mm-3.0mm, and thickness can change according to peripheral position.

The bend of composite material is incorporated in the glof club head of Figure 20 and 21.Glof club head 200 comprises bend 202, and it mainly depends on material property and changes rigidity, is similar to bend 192, but it has been incorporated to composite material structure.Glof club head 200 is configured to hollow body conventionally, and it divides 206 to define by face portion 204, bend 202He opisthosoma.When face portion 204, bend 202He opisthosoma divide 206 in conjunction with time, they form face 208, hat top 210, bottom 212, skirt section 214 and hosel 216 conventionally.

Bend 202 comprises front elements 218, Central element 220 and posterior elements 222.Preferably material is selected, so that being easy to be attached to face portion 204He opisthosoma, front elements 218 and posterior elements 222 divide on 206, and making Central element 220 is enough thin and flexibility, thereby the additional vibratory mode frequency that is about 2900Hz-4000Hz is provided.In one embodiment, front elements 218 and posterior elements 222 are metals, and Central element 220 is placed between front elements 218 and posterior elements 222, and consist of carbon fibre composite.Preferably the interval, interface between posterior elements 222 and face 208 and front elements 218 at least 6.0mm and more preferably 12.0mm at least.Hosel 216 can consist of metal and/or nonmetallic materials.In one embodiment, face portion 204He opisthosoma divides 206 titanium alloy, to consist of, front elements 218 and posterior elements 222 consist of the non-titanium material of low-density and preferred low modulus, for example aluminium or magnesium alloy, and Central element 220 consists of enough thin and flexible carbon fibre composite, thereby provide desired frequency response.In addition, front elements and/or posterior elements can be co-molded with composite Central element.Conventionally, select the material of the bond strength that provides enough between the parts for using in common practice, for example binding agent.

Glof club head of the present invention also can comprise the bend extending along the interface between glof club head and face rear portion, as shown in Figure 22 and 23.Glof club head 230 has hollow body structure conventionally, and it defines by bottom 232, hat top 234, skirt section 236, face 238 and hosel 240, and comprises bend 242.Bend 242 is included in the front portion of glof club head 230, and is placed between face 238 and bottom 232, hat top 234 and skirt section 236.

The rigidity that described bend has through selecting makes face whole deflection corresponding to the local buckling occurring at shock point.Be similar to embodiment above, regulate bend 242, make to impact and given the vibration that is about 2900Hz-4000Hz along bend frequency.As another kind of means, select the Properties Control of described ring and optimize COR and the corresponding characteristic time (CT), along the value of club head face, particularly at the pellet impact away from desirable impact position place.

Bend 242 is usually located at around the periphery of face 238, and makes rear portion that its club head face along transition curvature from glof club head 230 extends to this glof club head for example bottom 232, hat top 234 and skirt section 236.Bend 242 can be as directed discontinuous, so that the hosel of described glof club head part is by its partition.Bend 242 stops at flange, and it provides for bend 242 being installed to the attaching parts of glof club head 230.The enlightenment that should obtain, it is first-class that bonded block surface can be used for forming banjo fixing butt jointing, lap joint, matching joint.Bend 242 comprises face-flange 244 and rear flange 246.Face-flange 244 is attached on the periphery edge 248 of face 238.The part of rear flange 246 is attached in the part of bottom 232, hat top 234 and skirt section 236 periphery edges, for example, be attached to hat top flange 250 and flange in the bottom 252.Preferably this face and rear flange are about 2.0mm-12.0mm.

Bend 242 preferably consists of such material, and described material provides the Young's modulus lower than glof club head adjacent part.Preferably the rear portion of bend 242, face 238 and glof club head 230 consists of such material, and described material can for example be easy to combination by welding.For example face 238 and rear portion preferably consist of the first titanium alloy, and bend 242 consists of beta-titanium alloy, as described in more detail below.

Selectable, bend 242 can be by providing the carbon fibre composite ring of relatively low stiffness to form.Joint construction, ring geometry, ring position, fiber alignment, resinous type and resin content percentage are all the flexible parameters of selecting to be used for optimizing bend 242, so that the ball speed of output, along with the club head face raising of rod, keeps the durability of this glof club head simultaneously.Preferably carbon composite bend is attached to adjacent metal club head face and adjacent metal opisthosoma divides.

In another embodiment, as shown in figure 24, bend is attached on bin part at the transition position between glof club head club head face and rear portion.For example glof club head 260 has hollow body structure conventionally, and it defines by bottom 262, hat top 264, skirt section 266, face 268, hosel and bend 272.Bend 272 is included in the front portion of glof club head 260, and is conventionally constructed to ring-type element, and is placed in face 268 and bottom 262, between hat top 264 and skirt section 266.

Be similar to embodiment above, regulate bend 272, so that impact, along bend, give the vibration that frequency is about 2900Hz-4000Hz.Bend 272 is positioned at around face 268 peripheries, and makes its face along transition curvature from glof club head 260 to the rear portion of glof club head, and for example extend in bottom 262, hat top 264 and skirt section 266.Bend 272 stops at flange, and described flange provides for bend 272 being installed to the example of the bonded block of glof club head 260.Concrete, bend 272 comprises face-flange 274 and rear flange 276.Face-flange 274 is attached on the periphery flange 278 of face 268.The part of rear flange 276 is attached in the part of bottom 262, hat top 264 and skirt section 266 periphery edges, for example, by being attached to hat top flange 280 and flange in the bottom 282 combinations.

Bend 272 preferably consists of such material, and described material provides the Young's modulus lower than glof club head adjacent part.Preferably bend 272, face 268 and the rear portion of glof club head 260 consist of such material, and described material can for example be easy to combination by welding.For example face 268 and rear portion preferably consist of the first titanium alloy, and bend 272 consists of beta-titanium alloy, as described in more detail below.

In another embodiment, as shown in figure 25, glof club head 290 comprises interface element, and it is included, for bend 292 being attached to the adjacent part of glof club head 290.Front interface element 294 is placed between bend 292 and bin part 296.Similarly, rear interface element 298 is placed in bend 292 and below between body member 300.

In embodiments of the invention, front interface element 294 and rear interface element 298 all build as ring-type element, and it is placed between adjacent component.Front interface element 294 comprises face-flange 302 (it is attached on bin part 296 by lap joint) and bend flange 304 (it is attached on bend 292 by lap joint).The front interface element 294 of a part exposes and has formed the front surface of a part for glof club head 290 to the open air.Interface element 294 separates the periphery of the leading edge of bend 292 and bin part 296.Rear interface element 298 comprises rear body flange 306 (it is attached in rear body member 300) and bend flange 308 (it is attached on bend 292).Rear interface element 298 separates rear body member 300 and bend 292.

Glof club head 290 has composite material structure.In an example, rear body member 300 and bin part 296 consist of titanium alloy, and can consist of as Ti6-4 identical titanium alloy.Front interface element 294 and rear interface element 298 consist of such material, select described material for being attached to the material of bin part 296, bend 292 and rear body member 300.In an example, this interface element consists of aluminium alloy, and bend consists of carbon fibre composite.Should take a hint, described interface element 298 must not be configured with constant shape of cross section.

As shown in figure 26, glof club head 320 comprises interface element, and described interface element is for being attached to bend 322 adjacent part of glof club head 320.Front interface element 324 is placed between bend 322 and bin part 326.Similarly, rear interface element 328 is placed between bend 322 and rear body member 330.

Front interface element 324 and rear interface element 328 are all configured to ring-type element, and it is placed between adjacent component.Front interface element 324 comprises face-flange 332, and it is attached on bin part 326, has lap joint.Front interface element 324 also comprises bend flange 334, and it is attached on the forward flange 340 of bend 322.The front interface element 324 of a part exposes and forms the front surface of a part for glof club head 320 to the open air.Interface element 324 separates the periphery of the leading edge of bend 322 and bin part 326.Rear interface element 328 comprises rear body flange 336 (it is attached in rear body member 330) and bend flange 338 (it is attached on bend 322).Rear interface element 328 separates rear body member 330 and bend 322.

Glof club head 320 has composite material structure.In an example, rear body member 330 and bin part 326 consist of titanium alloy, and can consist of as Ti6-4 identical titanium alloy.Front interface element 324 and rear interface element 328 consist of such material, select described material to be attached on the material of bin part 326, bend 322 and rear body member 330.In an example, interface element consists of aluminium alloy, and bend consists of carbon fibre composite.

Referring to Figure 27, glof club head 350 comprises bend 352, and the transition position between described bend and golf clubs rear portion and face 354 separates.Conventionally glof club head 350 has hollow body structure, and it defines by bottom 356, hat top 358, skirt section 360, face 354, hosel and bend 352.

Bend 352 is placed between face 354 and glof club head 350 rear portions.Bend 352 is ring-type element normally, and it has U-shaped cross-section shape, so that it comprises forward flange 362 and rear flange 364.Forward flange 362 is attached on the face-flange 366 of face 354, and rear flange 364 is attached on the flange at golf clubs rear portion, described rear portion flange comprises hat top flange 368 and flange in the bottom 370.

Embodiment shown in Figure 28 and 29 is similar to Figure 27, but comprises alternative flange configuration.As shown in figure 28, glof club head 380 has hollow body structure, and it defines by bottom 382, hat top 384, skirt section 386, face 388, hosel and bend 390.Bend 390 is placed between face 388 and golf clubs back of head, and described rear portion comprises bottom 382 and hat top 384.Bend 390 is ring-type element normally, and it comprises front bound fraction 392 and rear flange 394.Front bound fraction 392 is parts of bend 390, its be looped around face-flange 396 around and with its combination so that front bound fraction 392 holds the face-flange 396 of at least a portion.The part adjacency of rear flange 394 and be connected to flange in the bottom 398 and hat top flange 400 on.

As shown in figure 29, glof club head 410 has hollow body structure, and it defines by bottom 412, hat top 414, skirt section 416, face 418, hosel and bend 420.Bend 420 is placed between face 418 and golf clubs back of head, and described rear portion comprises bottom 412 and hat top 414.Bend 420 is ring-type element normally, and it comprises forward flange 422 and rear flange 424.Forward flange 422 adjacent flat flanges 426 and with its combination.The part of rear flange 424 is in abutting connection with flange in the bottom 428 and be preced with top flange 430, and combines with them.

The structure of the bend of every kind of embodiment can be selected from many different replacement schemes, for the behavior of adjusting is provided at golf impact process.Figure 30-34 have shown the interchangeable multi-piece type structure of different bends.Concrete, shown bend comprises bend parts, it has different selectable geometries.For example the bend 440 of Figure 30 comprises angled shape of cross section, and described shape comprises bend parts 442, and it forms usually used as L shaped element.Bend parts 442 are attached on the forward flange 444 and rear flange 446 of the golf body of rod 448.As directed, forward flange 444 and rear flange 446 are converging property flanges, and they are in certain angle.Forward flange 444 and rear flange 446 are incorporated in the bottom 450 of glof club head body 448, conventionally the position in glof club head approaching face 452.As previously mentioned, the ball that bend 440 is preferably placed at face 452 impacts in surperficial about 20mm, and 5.0mm-20.0mm more preferably from about.Bend parts 442 can and/or be used binding agent to be attached on forward flange 444 and rear flange 446 by for example welding of any mechanical bond method, soldering, machanical fastener, diffusion bond, liquid surface diffusion bond, super plasticity formation and diffusion bond.Allow in manufacture process the structure close to the inner cavity chamber of glof club head, for example, be preced with top tractive structure or face tractive structure, associated methods can easily be completed.

In another embodiment, as shown in figure 31, bend 460 (it has shape of cross section wavy or gauffer shape) is included in glof club head 462.Bend 460 consists of bend parts 464, and it is attached on the forward flange 466 and rear flange 468 of glof club head 462.Forward flange 466 and rear flange 468 are incorporated in the bottom 472 of glof club head body 462, conventionally the position in glof club head approaching face 470.As previously mentioned, the ball that bend 460 is preferably placed at face 470 impacts in surperficial about 20mm, and 5.0mm-20.0mm more preferably from about.Bend parts 464 can and/or be used binding agent to be attached on forward flange 466 and rear flange 468 by for example welding of any mechanical bond method, soldering, machanical fastener.

In other embodiments, bend is formed by the bend parts of flange and common tunnel-shaped.Referring to Figure 32, glof club head 480 comprises bend 482, and it forms by bend parts 484, and described bend parts are for example attached on the flange of bottom 492 of glof club head 480 by welding, soldering and/or binding agent.The ball that bend 482 is preferably placed at face 494 impacts in surperficial about 20mm, and 5.0mm-20.0mm more preferably from about.Concrete, bend parts 484 are tunnel-shaped element normally, and it comprises groove 486, and described groove has held the part of forward flange 488 and rear flange 490.A part by bend parts 484 separates groove 486, selects a part for described bend parts 484 for the spacing of expectation is provided between forward flange 488 and rear flange 490.

In similar embodiment, as shown in figure 33, glof club head 500 comprises bend 502, and it forms by having the bend parts 504 of tunnel-shaped cross section.Bend parts 504 are for example attached on the flange forming on the bottom 506 of glof club head 500 by welding, soldering and/or binding agent.The ball that bend 502 is preferably placed at face 508 impacts in surperficial about 20mm, and 5.0mm-20.0mm more preferably from about.Concrete, bend parts 504 are tunnel-shaped element normally, and it has defined the slit of the part of holding forward flange 510 and rear flange 512.

In another embodiment, as shown in figure 34, glof club head 520 comprises the bend 522 being formed by bend parts 524, and it has tunnel-shaped cross section.Bend parts 524 are configured to the cross section of common shark dentation, and concrete first surface part and the common flat of comprising, they locate on summit to converge.Bend parts 524 are for example attached on the flange forming on the bottom 526 of glof club head 520 by welding, soldering and/or binding agent.The ball that bend 522 is preferably placed at face 528 impacts in surperficial approximately 20mm, and 5.0mm-20.0mm more preferably from about.Concrete, bend parts 524 are tunnel-shaped element normally, and it has defined the slit of the part of holding forward flange 530 and rear flange 532.

Referring to Figure 35, the glof club head 540 of another embodiment comprises bend 542, and its shape is similar to the embodiment shown in Figure 34, but bend 542 stretches out from the bottom 546 of glof club head.Bend 542 is formed by bend parts 544, and it has the cross section that forms passage.Bend parts 544 are configured to the shape of cross section of common shark dentation, and concrete comprises first surface partly and common flat, and they converge at place, summit.Bend parts 544 are for example attached on the flange forming on the bottom 546 of glof club head 540 by welding, soldering and/or binding agent.The ball that bend 542 is preferably placed at face 548 impacts in surperficial approximately 20.0mm, and 5.0mm-20.0mm more preferably from about.

In another embodiment, as shown in figure 36, glof club head 560 comprises bend 562.Bend 562 is formed by the bend parts 564 conventionally with tubular cross-section.Bend parts 564 are configured to have common tubular cross-section shape, although and it be shown as and there is annular cross section shape, should take a hint, it can have any shape of cross section.Bend parts 564 are for example attached on the flange 568 forming on the bottom 566 of glof club head 560 by welding, soldering and/or binding agent.Bend parts 564 have the external shape with flange 568 complementations, and mating surface is provided, so that bend parts 564 can be attached on flange 568.The ball that bend 562 is preferably placed at face 570 impacts in surperficial approximately 20.0mm, and 5.0mm-20.0mm more preferably from about.

Referring to Figure 37, in another embodiment, glof club head 580 comprises bend 582.The shape of bend 582 is similar to the embodiment shown in Figure 34, reverse but bend 582 is orientated with common shark dentation cross section.Concrete, after the curvature portion of bend 582 more leans on than the embodiment shown in other.As directed, bend 582 is formed by bend parts 584, and it has the cross section that forms passage, but is to be understood that bend 582 can form individual construction with together with the bottom 586 of glof club head 580.By changing bend with respect to the orientation of glof club head remainder, the stress being applied on bend is to apply in the direction of selecting, and the behavior of bend is different, so that bend is in fact stronger.Therefore, this bend can be adjusted glof club head by changing orientation.Bend parts 584 are for example attached on the flange forming on glof club head 580 bottoms 586 by welding, soldering and/or binding agent.The ball that bend 582 is preferably placed at face 588 impacts in surperficial approximately 20.0mm, and 5.0mm-20.0mm more preferably from about, and thickness about 0.35mm-2.0mm preferably.

Referring to Figure 38-40, glof club head 600 comprises the chamber of prolongation, and it provides can be for regulating to provide the bend 602 of the compliance of expectation.For example this glof club head comprises flexible tube, can be with submissive material by its filling or be partially filled to adjust sound, sensation and compliance, or it is vacant.Glof club head 600 comprises hat top 604, bottom 606, skirt section 608, face 610 (it has defined ball and has impacted surface 611) and hosel 612 (they are combined to form hollow body Golf stem head structure, and this structure has defined inner cavity chamber 614).Bend 602 is the tubular structures that extend, and it extends upward to toe side at heel conventionally, and has defined bend chamber 613.In one embodiment, bend 602 extends along glof club head 600, so that when glof club head is when addressing position, and the fore-and-aft plane of its crosscut club head face geometric center vertical, that extend through glof club head 600.

Comprise aperture 616, it is provided to the passage of bend 602 inside, and can seal with covering 618, and this covering is preferably attached on the bend 602 in aperture 616 removedly.As an example, aperture 616 can be threaded, and covering 618 can be by screw thread precession aperture 616, and comprises the instrument with the parts that covering 618 can be installed and removed.

As another option, bend 602 can completely or partially be filled with inserts 603, for example high density resilient insert.For example, with the elastomeric material that has flooded high density material, described high density material is tungsten for example, produces high density flexible inserts, is inserted in tubulose bend, or insert in the bend of one of described here other embodiments that comprise open slots, it is after club head face.Inserts can be for filling or be partially filled the acoustics behavior that bend changes glof club head.Can be for generation of the quality and weight distributing installation with different to the inserts in bend, to the final weight of this glof club head and Mass Distribution are selected by thering is different densities and/or thering are a plurality of inserts that material that Different Weight distributes forms.In addition, bend can comprise opening, and it extends in inner cavity chamber, and this inserts can be for occlusion of openings, so that inner cavity chamber is not exposed to environment, fragment and water just cannot enter described inner cavity chamber like this.Exemplary suitable material comprises polyurethane, rubber, thermosetting polymer, thermoplastic polymer, epoxy resin, foam and neoprene.Selection has the material of certain hardness and the flexibility that bend combination is used to provide combination.The hardness of preferred selected material is A type hardness tester meter scope 30-95 or D type hardness tester meter scope 45-85 normally.

With reference to Figure 41-43, describe the glof club head 620 of another embodiment, it comprises the outward extending bend 622 in bottom 624 from glof club head.Glof club head 620 is configured with hat top 626, bottom 624, skirt section 628, face 630 (it has defined ball and has impacted surface 631) and hosel 632 (they have been combined to form the hollow body that has defined inner cavity chamber 634 and have constructed, and).In embodiments of the invention, bend 622 is crossed over bottom 624, skirt section 628 and hat top 626 and is extended continuously, so that it is looped around on the toe in skirt section 628 of glof club head 620.

In other embodiments, bottom plate is incorporated in glof club head, and at least part of being incorporated in bend.As shown in figure 44, glof club head 640 comprises hat top 642, bottom 644, face 646, skirt section 648 and bottom plate 650 (they are combined to form hollow body, and described hollow body has defined inner cavity chamber 651).Bottom 644 and bottom plate 650 are combined to form bend 652.Bend 652 is a kind of tunnel-shaped parts, and it extends upward to toe side at heel conventionally, and is formed by the first element 654, the second element 656 and bottom plate 650.The first element 654 is attached to the trailing edge of the front emission part 658 of bottom 644, and bend into inner cavity chamber 651 from bottom 644.The second element 656 is attached in the leading edge at 644 rear portions, bottom, and also from bottom 644, bend into inner cavity chamber 651.On summit, interosculate in 660 places in the end of the first element 654 and the second element 656 (itself and bottom 644 spaced apart).Second lower end of the second element 656 is combined and made the rear portion of bend 652 complete with the front portion of bottom plate 650, the rear portion of described bend 652 is the 660 bottom outer bottom surfaces that extend to glof club head 640 from summit, so that the degree of depth of bend 652 is greater than the thickness of bottom plate 650.

In the embodiment of Fairway Woods or mixing, conventionally structure is used to provide earthed surface, bottom 644 has common stepped structure, so that only the front emission part 658 of bottom 644 provides earthed surface, and the remainder of earthed surface is provided by the lower surface of bottom plate 650.Preferably this bend extends and extends on toe direction at common heel.

In addition,, in this embodiment and the following examples, select the material of bottom plate for the Mass Distribution of expectation is provided at this glof club head, and described material can have the density more higher or lower than the remainder of described rod head body material.For example, because bottom plate is common and bend is integrated, described bend connects and is bordering on the face of glof club head, therefore useful is can be by high density material for alley and mixing embodiment, the centre of gravity that keeps glof club head, and more low-density material can be beneficial in the embodiment of bat, (itself otherwise will in polycrystalline substance) can be distributed to the periphery of this glof club head so that quality of materials.This bottom plate material is preferably selected from aluminium, titanium, magnesium, zirconium, steel, tungsten, and bottom plate can be attached on glof club head body by securing member, soldering, welding, binding agent or any other suitable method of attachment.In an example, Fairway Woods can be constructed with the titanium for most of rod head bodies, and the bottom plate of steel or tungsten is soldered on titanium body.

In another embodiment, as shown in figure 45, glof club head 670 is similar to Figure 44 and constructs, so that it comprises the bottom plate 672 of a part that has formed bend 674, but in this embodiment, bottom plate 672 is accommodated in the recess of bottom 676 of glof club head 670.Glof club head 670 is normally hollow, and is constructed by hat top 678, bottom 676, face 680, skirt section 682 and bottom plate 672 (they are combined to form the hollow body that has defined inner cavity chamber 684).

Bend 674 is formed by the first element 686, the second element 688 and bottom plate 672 conventionally.The first element 686 is attached on the trailing edge of bottom 676 front emission part 690, and bend into inner cavity chamber 684 from bottom 676.The second element 688 is attached in the leading edge at 676 rear portion, bottom, and also from bottom 676, bend into inner cavity chamber 684.On summit, 692 places mutually combine in the end of the first element 686 and the second element 688 (they and bottom 676 spaced apart).Second lower end of the second element 688 is combined and made the rear portion of bend 674 complete with the front portion of bottom plate 672, and the rear portion of described bend is the 692 bottom outer bottom surfaces that extend to glof club head 670 from summit.

Bottom the 676 and second element 688 is combined to form the groove in glof club head 670 lower walls, and it holds bottom plate 672.Concrete, the lower end of the second element 688 extends to form for example lappet 689 of shoulder below the binding site between the second element 688 and bottom 676, its in bottom 676 adjacent lower surface with downward-extension.Therefore,, at Fairway Woods with in mixing embodiment (it utilizes lower surface contiguously), the front emission part 658 of bottom 676, bottom plate 650 and rear portion provide the ground connection lower surface of glof club head 670.

The glof club head that another embodiment is shown with reference to Figure 46, it comprises bottom plate.Glof club head 700 comprises bottom plate 702, and described bottom plate is attached on bottom 704 and has formed a part for bend 706.Bend 706 consists of the bottom plate 702 of the first element 708, the second element 710 and a part.The first element 708 and the second element 710 extend into the inner cavity chamber of glof club head 700, and 712 places cross on summit.The lower end of the second element 710 extends to form shoulder or lappet 714 below the binding site of the second element 710 and bottom 704, the complementary and combinations of the shoulder 716 of itself and bottom plate 702.Bottom 704 has stepped structure, so that bottom plate 702 provides the minimum surface of glof club head 700.

In another embodiment, as shown in figure 47, glof club head 720 comprises bottom plate 722, and it has covered and has been included in the aperture 724 in glof club head 720 bottoms 726 and has formed a part of bend 730.Aperture 724 can be located bottom plate 722 for being provided to the passage of glof club head inner cavity chamber, and/or allows the quality in larger adjustment bottom plate 722, keeps the monnolithic case of glof club head 720 simultaneously.For example bottom plate 722 can comprise projection 728, and it has increased the quality of bottom plate 722 and has extended in aperture 724 and/or inner cavity chamber.

In another embodiment, as shown in figure 48, glof club head 740 comprises bottom plate 742, the aperture 744 that its bottom 746 that has covered glof club head 740 comprises, and provide weight port, for weight element 748 is attached to this glof club head.This weight port of preferred arrangements, for not changing the bottom plate 742 of combination and the position of centre of gravity of weight element 748 provides more effective mechanism when changing or removing weight element 748, it is for changing the swing weight of the golf clubs that comprises glof club head 740.Concrete, bottom plate 742 comprises that installing component is for example attached to the screwed hole in dismountable weight element 748.

As another kind, select, any opening bend described here can completely or partly be filled with inserts, and for example inserts 743, and it can be the flexible inserts of high density.For example with the elastomeric material that has flooded high density material, produce high density flexible inserts, described elastomeric material is tungsten for example, in described inserts Inserting Tube sigmoid portion, or insert in the bend of one of described here other embodiments that comprise open slots, it is after club head face.Inserts can be for filling or be partially filled the acoustics behavior that bend changes glof club head.By thering is different densities and/or thering are a plurality of inserts that material that Different Weight distributes forms, can provide to produce inserts, its with different quality and weight distributing installations in bend, to the final weight of this glof club head and Mass Distribution are selected.In addition, bend can comprise opening, and it extends in inner cavity chamber, and described inserts can be for occlusion of openings, so that inner cavity chamber is not exposed to environment, fragment and water just cannot enter this inner cavity chamber like this.Exemplary suitable material comprises polyurethane, rubber, thermosetting polymer, thermoplastic polymer, epoxy resin, foam and neoprene.Selection has the material of certain degree of hardness and the flexibility that bend combines to provide combination.The hardness of preferred selected material is A type hardness tester meter scope 30-95 or D type hardness tester meter scope 45-85 normally.

With reference to Figure 49, describe a kind of glof club head of embodiment, it comprises bottom plate and bend.Glof club head 750 comprises hat top 752, bottom 754, skirt section 756, face 758 and bottom plate 760.Groove 762 is included in bottom 754 to have held bottom plate 760, but when installation is during bottom plate 760, between the antetheca 764 of groove 760 and the front end of bottom plate 760, forms gap.Therefore, this gap has formed in glof club head close to the bend 766 in the bottom of face 758.

In another embodiment, as shown in figure 50, glof club head 770 comprises stair-stepping bottom 772 and bottom plate 774, and they are combined to form bend 775.Bottom 772 comprises front emission part 778, and it is 772 transition wall 780 extensions towards bottom backward from face 776, and described transition wall 780 has formed the antetheca of bend 775.Bottom plate 774 is attached to bottom 772, so that it and the interval formation bend 775 of transition wall 780.Bottom plate 774 extends back from transition wall 780, and dots desired distance.

The glof club head of another embodiment comprises recessed bottom and bottom plate, and they are combined to form bend, and a part for described golf clubs shown in Figure 5.Glof club head 790 comprises bottom 792, and described bottom 792 has defined the groove 794 that receives bottom plate 796, and described bottom and bottom plate combination definition bend 800.Concrete, bottom 792 comprises front emission part 798, and described front emission part 798 extends between the face 802 of glof club head and transition wall 804 (described transition wall 804 in the past emission part 798 extends internally, and forms a part for groove 794).Bottom plate 796 is contained in groove 794 and is attached to bottom 792, so that the front portion of bottom plate 796 and emission part 798 separate, forms the gap of common V-arrangement at bend 800.

Referring to Figure 52, a kind of glof club head 810 of embodiment, it comprises that bend 812 and bend regulate parts.Glof club head 810 comprises hat top 814, bottom 816, skirt section 818 and face 820 (it has defined ball and has impacted surface 822).Bottom 816 comprises front emission part 824, and the antetheca 826 of described front emission part 824 from face 820 towards bend 812 extends back.Antetheca 826 is attached at 830 places, summit and on rear wall 828, forms bend 812.The rear portion of bottom 816 extends back from rear wall 828, and forms the remainder of bottom 816.As directed, the rear portion of bottom 816 can have such thickness, and described thickness is for example by comprising that thickened areas 832 changes, described thickened areas 832 by isolated part 834 and backward with bend 812 intervals.

Bend 812 extends and extends on toe direction at heel, and forms the outer tunnel in bottom 816.Thereby select the thickness of emission part 824, antetheca 826, summit 830, rear wall 828 and isolated part 834, in golf impact process, bend 812 is adjusted to desired vibration frequency.Defined the thickness t 1-t7 with particular kind of relationship, so that emission part 824 is transitioned into second thickness t 2 adjacent with antetheca 826 from the first thickness t 1 adjacent with face.About t2 that the thickness of antetheca 826 is attached to emission part 824 parts from it changes to center thickness t3 and to the thickness that approximates greatly the thickness t 4 on summit 830.Similarly, the thickness of rear wall 828 changes to center thickness t5 from it in conjunction with about t4 of summit 830 parts and to the thickness that approximates greatly the thickness t 6 of isolated part 834.Backward, the thickness of bottom 816 changes to thickness t 7 from the thickness t 6 of isolated part isolated part 834.

As mentioned above, join the flexibility of glof club head with the bend that is arranged in bottom of the present invention and reduced the reverse that is positioned at the pellet impact below desirable impact position.Because the minimizing reversing, the ball of glof club head impact surface curvature on desirable impact position with below be different so that can regulate the transmitting of golf to reduce reverse amount.The ball of golf clubs between the top edge of face and the leading edge of golf clubs impacts " roller " that surface curvature is defined as face.The glof club head of the present invention preferably roller radius on desirable impact position is different from the roller radius below desirable impact position.Selectable, higher than the roller radius at the geometric surface center of golf club head face, be different from the roller radius lower than the geometric surface center of golf club head face.As another kind, select, the roller radius of the club head face on the top 2/3 of this glof club head is different from the club head face of bottom 1/3.The roller radius that preferably impacts surperficial part close to the ball of bend is greater than the part away from the club head face of bend, so that it is more smooth than other parts to impact surperficial part close to the ball of bend.For example, in glof club head 810, bend 812 is arranged in the lower surface of this glof club head, and lower than the ball of the part of desirable impact position, impacts surperficial roller radius R 1 and be greater than the roller radius R 2 that impacts surperficial part higher than the ball of desirable impact position.The roller radius that preferably impacts surface part close to the ball of bend is greater than approximately 12.0 inches, and more preferably greater than 12.5 inches.

Similarly, golf clubs impacts at heel and the ball between toe of club head face " projection " that surperficial curvature is defined as club head face.Glof club head of the present invention (it comprises the bend that extends to glof club head skirt section) provides the similar sidespin of the golf impacting for centrifugal impact to reduce, and therefore has the protruding radius that is greater than glof club head (it is the bend on skirt section not).Improve protruding radius and produced more smooth club head face, improved the hot spot region of this golf club head face, thereby this is to provide more effective energy between glof club head and ball to shift to realize by reducing the centrifugal inclination that impacts impact.The protruding radius that preferably impacts surface part close to the ball of the bend in glof club head skirt section is greater than approximately 12.0 inches, and more preferably greater than 12.5 inches.

Figure 52-54 show the embodiment of selectable thickness transition.Here thickness relationship used is used to provide and runs through the desired bending that bend and the golf club head adjacent with bend divide and distribute.In the embodiment shown in Figure 52, the thickness t 1 in emission part and t2 are at least 50% of smallest shaft women's head-ornaments thickness, and are more preferably at least 60% of minimal face thickness, and preferred thickness t1 is greater than t2 (t1>t2).In addition, the antetheca thickness t3 of bend and rear wall thickness t 5 differ and are less than 40%, and more preferably both differ and are less than 30% and even more preferably both differ and are less than 20%.In addition, antetheca thickness t3 and the rear wall thickness t 5 of bend are preferably less than 90% of face minimum thickness, and the wall thickness of bend is preferably less than or equal to thickness t 1, the t2 of emission part.The preferred thickness in summit of bend is minimum thickness t3 and the rear wall thickness t 5 preferably greater than or equal to bend antetheca.In addition, summit thickness t 4 be preferably in antetheca thickness t3 and rear wall thickness t 5 the greater 30% in, and more preferably in them in 15% of thickness the greater.

If the thickness of the base section in the approximately 30.0mm in bend rear wall is greater than the thickness of the emission part before bend antetheca, preferably reduce the thickness of the bottom adjacent with bend rear wall.If for example bottom thickness t7 is larger than the minimum thickness of the emission part in bend rear wall 30.0mm, the thickness t 6 near the base section after bend is preferably less than the minimum thickness of this emission part and is less than minimal face thickness.Preferred thickness t6 is less than 70% of emission part minimum thickness, and is more preferably less than 60% of emission part minimum thickness.In addition, thickness t 6 is less than 60% of minimal face thickness, and is more preferably less than 50% of minimal face thickness.

In another embodiment, as shown in Figure 53, change described emission part, make it comprise such thickness, described thickness changes in the length L of emission part.Thickness relationship for other parts of above-mentioned bend and bottom is identical with embodiment above, repeats no more.In emission part, the thickness of transmitting described emission part length L at least 60% on be constant, and more preferably emission part length L at least 70% on be constant.In addition, the maximum ga(u)ge of described emission part than bend antetheca the face closer to this glof club head.Maximum ga(u)ge is usually located at thickness t 1 place, and the minimum thickness of emission part is usually located at thickness t 2 places, as shown in Figure 53.The minimum thickness of preferred emission portion is more than or equal to the minimum thickness of this glof club head bottom.The minimum thickness of emission part be preferably less than emission part maximum ga(u)ge 70% and be more preferably less than 60% of emission part maximum ga(u)ge.

In another embodiment, as shown in Figure 54, change described emission part, make it comprise such thickness, described thickness changes in the length L of emission part, summit thickness chart is shown larger than the minimum thickness t3 of the antetheca of bend and rear wall thickness t 5, and the bend bottom thickness chart after leaning on is shown constant and is conventionally less than the maximum ga(u)ge of emission part.In this embodiment, the thickness of described emission part is conventionally from face adjacent place to bend antetheca linear decrease.From face adjacent place to bend, the reduction of the linearity of this linear decrease or thickness is preferably greater than approximately 4% (that is, thickness reduction 0.4mm in 10.0mm length), and more preferably greater than about 5%.In this embodiment, the thickness t 6 of the contiguous base section of bend rear wall and from bend further bottom thickness t7 be backward maximum ga(u)ge about equally and that be less than emission part.

In the embodiment of golf clubs of the present invention, (have the loft of approximately 13 °-30 °), for example, in the glof club head of Fairway Woods and mixed type, described thickness is conventionally in following scope: t1) 1.4-2.0mm; T2) 1.2-1.6mm; T3) 1.2-1.7mm; T4) 1.2-2.0mm; T5) 1.2-1.7mm; T6) 0.6-1.2mm; And t7) 0.6-4.0mm.Similarly, in the embodiment of golf clubs of the present invention, (have the loft of approximately 6 °-12 °), for example, in bat type glof club head, described thickness is scope below conventionally: t1) 1.4-2.0mm; T2) 0.6-1.6mm; T3) 0.5-1.7mm; T4) 0.5-2.0mm; T5) 0.5-1.7mm; T6) 0.5-1.2mm; And t7) 0.5-3.0mm.

With reference now to accompanying drawing 55 and 56,, glof club head 840 comprises bend 842, and described bend 842 is at least part of is coated with dismountable element 844.Glof club head 840 comprises hat top 846, bottom 848, skirt section 850, face 852 (it has defined ball and has impacted surface 854) and hosel 856 (it is connected to the golf clubs axostylus axostyle of prolongation, and is clamped in the golf clubs of assembling).

Bend 842 is arranged in the front portion of bottom 848, common vicinal face 852, and comprise the mounting portion for detachable components 844.Bend 842 comprises antetheca 858, and described antetheca 858 is combined at 862 places on summit with rear wall 860.Rear wall 860 extends between on summit 862 with for the base 864 of detachable components 844.Base 864 comprises recessed carrier part 866, and it holds detachable components 864 and makes its location, so that when it is installed, the lower surface of detachable components 844 is concordant or recessed with respect to the outer surface of adjacent base 848.Bonded block 868 is included, so that detachable components 864 can dismountablely be connected on glof club head 840.For example bonded block 868 can be screwed hole, and detachable components 844 can be the bottom plate increasing the weight of, and with threaded fastener, is attached on described screwed hole.

The size of adjusting detachable components 844, makes it be applicable to being installed in recessed base 864, so that the spaced apart formation of antetheca 858 gap 870 of it and bend 842.Gap 870 provides the opening in bend 842, and this opening provides the path that enters into chamber 872 (it is by detachable components 844 and bend 842 definition).Gap 870 provides space, so that bend 842 can be crooked in golf impact process, and gap 870 allows antetheca 858 to move up in front and back with respect to detachable components 844.

Referring to Figure 57, glof club head 880 comprises bend 882 (base of itself and detachable components 884 intersects) and tradable axostylus axostyle system 886.In this embodiment, glof club head 880 comprises hollow body structure, and it is formed by Guan Ding, bottom 888, skirt section and hosel 890.Glof club head 880 comprises detachable components 884, and a part for for example weight element, and bottom 888 comprises the installing component of described weight element.In this embodiment, installing component comprises common cylindrical receiver 892, and it extends to glof club head 880 inside from bottom outer surface.

Glof club head 880 also comprises bend 882, its common heel in toe direction along bottom 888 front portion extend.Bend 882 can have any particular configuration relevant to other embodiments described here.

Glof club head 880 comprises removable axostylus axostyle system, and it comprises securing member 894, and it combines with the head from bottom sides.Comprise access opening 896, it receives securing member 894 and 888 towards hosel 890, extends from bottom.

The polycrystalline substance of receiver 892, bend 882 and access opening 896 intersects, so that this structure is produced by common part.Concrete, the sidewall of the sidewall of receiver 892 and bend 882 intersects, so that the combination in glof club head 880 toes of this structure.Similarly, the sidewall of the sidewall of access opening 896 and bend 882 intersects, so that the combination in the heel of glof club head 880 of this structure.The crossing quantity that has reduced supernumerary structure when with described textural association of receiver 892, bend 882 and access opening 896 structures.

Conventionally the physical attribute of controlling glof club head provides in the behavior with expecting in glof club head impact process.In metal wood glof club head, control Mass Distribution the position of centre of gravity of expectation and the moment of inertia of expectation are provided.As shown in Figure 58-60, the center of gravity of glof club head can be relevant with the many features on this glof club head dimensionally.For the desired size scope of golf clubs of the present invention, be listed in the following table, and the negative value shown in bracket has represented direction with respect to fixed reference feature (fc-face center of gravity for example; G-ground).

Bend of the present invention is also adjusted size with respect to gravity center of golf club head position, and the behavior of expectation is provided.Also should take a hint, width W, height H and to ball, impact surperficial distance D and can in described here whole embodiments, measure, as shown in figs. 1 and 4.Preferably from ball, impact surface and be less than or equal to 30.0mm to the distance D of bend, be more preferably less than or equal 20.0mm and more preferably 5.0mm-20.0mm.In addition, distance D preferably CG-Z-fc distance 20%-50% and be more preferably the 25%-45% of CG-Z-fc distance.In addition, the height of bend and width sum be the +/-in CG-Y-g distance 30% preferably, and the more preferably +/-in CG-Y-g distance 20%.

Being reduced in Mass Distribution of the reverse being provided by bend of the present invention also has larger elasticity, improves the rotary inertia of glof club head.Concrete, bend of the present invention is incorporated in the bottom of glof club head pellet impact is provided, it has simulated the launching condition of the glof club head (it has centre of gravity) without bend.Analyze and show that being incorporated to of bend of the present invention provides the effect identical with the golf clubs that there is no bend of center of gravity reduction 3.0mm.But, lower the center of gravity and require quality to be placed in the bottom of this glof club head, and because the shape of this glof club head, it defines and can be placed on the amount that periphery improves the quality of rotary inertia.So bend of the present invention can, for the behavior of the glof club head with centre of gravity is provided, is placed in other quality this glof club head periphery and improves rotary inertia and center of gravity is moved backward simultaneously.

As mentioned above, bend of the present invention provides partly lower rigidity in a part of glof club head.Conventionally described low rigidity can realize as follows: select the geometry of bend, for example, change shape and/or tranverse sectional thickness, and/or select the material of the part of bend.Can select to provide the material of low rigidity bend to comprise Young's modulus beta (β) or nearly beta (near β) titanium alloy.

Beta-titanium alloy is preferably, and this is because they provide the material with relatively low Young's modulus.The deflection of plate of perimeter load at it under applied stress is the function of the rigidity of this plate.The rigidity of this plate directly and Young's modulus and club thickness (that is, t ³) proportional.So when two kinds of comparisons have the material sample of same thickness and different Young's, the material with lower Young's modulus is larger in the deflection applying under identical power.The energy stored in described plate directly with the ratio that deflects into of this plate, as long as this material shows as elasticity, and the energy of storing after applied stress is removed, release is just.Therefore, need to use this material that can larger deflection, and the therefore larger elastic energy of storage.

The structure of this bend causes material to extend into the chamber of golf clubs conventionally, and when crooked position is in the bottom of glof club head or during hat top, this has improved CG conventionally.When bend is included in hat top, the increase of CG height is obviously larger.Preferably, in using the embodiment of hat bending pars convoluta, the part before the part after bend hat leans leans with respect to bend hat is lower, reduces the whole CG of this glof club head.Concrete, the height of hat bending pars convoluta leading edge is greater than the height of hat bending pars convoluta trailing edge.The poor 1.0mm that is greater than of preferred heights, and more preferably greater than 2.0mm, and the position with the Guan Ding of maximum height is overhead between these golf clubs women's head-ornaments and bend.

As shown in embodiment above, except bend, glof club head can have the installing component of one or more detachable weight, changes whole glof club head weight and/or CG position.In one embodiment, the CG-C-sa value of glof club head (comprising bend in the bottom of this glof club head) is greater than 18.0mm after axostylus axostyle axle, be greater than 33.0mm with CG-Z-fc value behind preferred Mian center, and/or this glof club head Y-axis rotary inertia value is around 450kg-mm at least ².In addition, this glof club head has at least one weight installing component and at least one detachable weight, and it can change at least 2.0mm by the CG of this glof club head on certain orientation.

In addition, preferably make the vibration frequency of Golf club face and the vibration frequency of golf match, make to leave after impacting the golf speed maximum of face.The vibration frequency of face depends on face parameter, for example Young's modulus of material and Poisson's ratio, and club head face geometry.The typical modulus of alpha-beta (alpha-beta) Ti alloy is 105-120GPa.On the contrary, the Young's modulus of current β-Ti alloy is 48-100GPa.

The selection that is used for the material of glof club head also must be considered the durability of the glof club head repeatedly impacting through golf.Therefore, must consider the fatigue life of club head face, and depend on the intensity of selected material this fatigue life.So, for the material of this glof club head, must select the biggest ball speed of impacting from club head face for providing, and its must fish oil enough intensity is to provide acceptable fatigue life.

β-Ti alloy provides low Young's modulus conventionally, but is conventionally also accompanied by the low strength of materials.β-Ti alloy conventionally can heat treatment be realized the increase of intensity, but heat treatment also causes the increase of Young's modulus conventionally.But β-ti alloy can cold working improve intensity, and can obviously not increase Young's modulus, and because described alloy has body cube crystal structure placed in the middle conventionally, so their cold working widely conventionally.

Preferably intensity is about to 900-1200MPa and Young's modulus and is about the material of 48-100GPa for the part of this glof club head.For example preferably such material is used for to face and/or bend and/or the bend covering of glof club head.The material that shows the characteristic within the scope of those comprises titanium alloy, and it is commonly referred to as rubber-metal.

Although not too preferred, heat treatment can be applied to realize on β-Ti intensity and the acceptable balance of Young's modulus of material.The previous application of beta-titanium alloy needs heat treatment that the strength of materials is maximized conventionally, and does not control Young's modulus.When heating titanium alloy experienced the crystal structure α that fills from the hexagon sealing transformation mutually of body cube β phase placed in the middle in opposite directions.The temperature that this transformation occurs is known as beta transus temperature.Add the alloying element in titanium conventionally to show preferential stable alpha phase or β phase, and be therefore known as alpha stabilizers or β stabilizing agent.Even at room temperature by the β stabilizing agent with certain tittle, make Ti Alloying, stablizing this β is also possible mutually.If but such alloy is reheated to the high temperature lower than beta transus temperature, β phase decomposition be transformed into α phase, as indicated in laws of thermodynamics.This alloy is called metastable beta-titanium alloy.

Although thermodynamics rule has only been predicted the formation phase of α phase, many non-equilibrium phases have in fact also been there are during β phase decomposition.These non-equilibrium phases α ', α ' ' and ω represent.Have report to claim, these each in mutually have different Young's modulus, and the magnitude of this Young's modulus meets β < α ' ' < α < ω conventionally.Therefore, can infer if expect to improve by heat treatment the intensity of β-titanium, advantageously carry out by this way,, to comprise that the material of α ' ' phase is as preferred catabolite, and we have eliminated or have made the formation of α and ω phase to minimize.The formation of α ' ' phase is by quenching to facilitate from alpha+beta region on Phase Diagram of Materials, and it means that this alloy should be from the temperature quenching changing lower than β.So preferred this glof club head for a part by β-Ti alloy (it makes to form mutually α ' ' from β through heat treatment and maximizes mutually).

Select heat treatment method that the transformation mutually of expectation is provided.For example maximum temperature, retention time, the rate of heat addition, quencher speed produce the material composition of expectation to select heat treatment variable.In addition, heat treatment method can be special for selected alloy, because the effect of different beta stable elements is different.For example the behavior of Ti-Mo alloy is different from Ti-Nb alloy or Ti-V alloy or Ti-Cr alloy; Mo, Nb, V and Cr are whole β stabilizing agents, but have effect in various degree.Beta transus temperature scope for metastable β-Ti alloy is approximately 700 ℃-800 ℃.So for such alloy, described solution-treated temperature range will be than the low about 25-50 degree Celsius of beta transus temperature, in practice process, this alloy will carry out solution-treated at about 650 ℃-about 750 ℃.After water quencher, thereby can further gain in strength by this β-Ti alloy of low temperature aging.The strength of materials measured value of solution-treated is about 650MPa, and the intensity of heat treated alloy is 1050MPa.

The example of applicable beta-titanium alloy comprises: Ti-15Mo-3Al, Ti-15Mo-3Nb-0.3O, Ti-15Mo-5Zr-3Al, Ti-13Mo-7Zr-3Fe, Ti-13Mo, Ti-12Mo-6Zr-2Fe, Ti-Mo, Ti-35Nb-5Ta-7Zr, Ti-34Nb-9Zr-8Ta, Ti-29Nb-13Zr-2Cr, Ti-29Nb-15Zr-1.5Fe, Ti-29Nb-10Zr-0.5Si, Ti-29Nb-10Zr-0.5Fe-0.5Cr, Ti-29Nb-18Zr-Cr-0.5Si, Ti-29Nb-13Ta-4.6Zr, Ti-Nb, Ti-22V-4Al, Ti-15V-6Cr-4Al, Ti-15V-3Cr-3Al-3Sn, Ti-13V-11Cr, Ti-10V-2Fe-3Al, Ti-5Al-5V-5Mo-3Cr, Ti-3Al-8V-6Cr-4Mo-4-Zr, Ti-1.5Al-5.5Fe-6.8Mo, Ti-13Cr-1Fe-3Al, Ti-6.3Cr-5.5Mo-4.0Al-0.2Si, Ti-Cr, Ti-Ta alloy, with Ti+25mol% (Ta, Nb, V)+(Zr, Hf, O) the rubber-metal family alloy representing, such as (percentage by weights) such as Ti-36Nb-2Ta-3Zr-0.35O.Near β titanium alloy can comprise: SP-700, TIMET18 etc.

Conventionally, preferably the face cup of glof club head of the present invention or face insert consist of alpha-beta or near-beta-titanium alloy, this is owing to their high strength, such as Ti-64, Ti-17, ATI425, TIMET54, Ti-9, TIMET639, VL-Ti, KS ELF, SP-700 etc.In addition, the rear portion of the described golf body of rod (, the part that is different from face cup, face insert, bend and bend covering) preferably by α, alpha-beta or beta-titanium alloy, made such as Ti-8Al-1V-1Mo, Ti-8Al-1Fe, Ti-5Al-1Sn-1Zr-1V-0.8Mo, Ti-3Al-2.5Sn, Ti-3Al-2V, Ti-64 etc.

As previously mentioned, bend can be used as independent parts and constructs, and is connected on the remainder of glof club head body.For example these bend parts can and form by forging stamped from sheetstock, and the remainder of described rod head body is constructed with one or more cast part.Bending ram portion parts can be better than this bend of casting, because casting can be introduced mechanical defect.For example cast material will be stood its low mechanical performance of comparing with the same material of the form of forging conventionally.As an example, the Ti-64 of casting form have than forge Ti-64 low the mechanical performance of about 10%-20%.This is because the granularity in foundry goods is obviously greater than in forging form, and conventionally thinner granularity has caused mechanical performance higher in metal material.

In addition, titanium casting has also formed the superficial layer that is known as " α shell ", a surf zone, and it has the α phase titanium being dominant, and it is to be formed by the titanium that is rich in interstitial oxygen concentration.In itself, be harmless mutually with the α of itself, but it can become stone and crisp, the golf for example repeating in fatigue application like this impacts (it has caused the bending repeating), and α shell may hinder the durability of parts.

Most of titanium alloy may at room temperature form hardly.Therefore, titanium alloy must be heated to high temperature and form them.Forming the necessary temperature of alloy will depend on the composition of alloy, and the alloy with higher beta transus temperature typically needs higher formation temperature.When material cooled arrives environment temperature, be exposed to the reduction that high temperature has caused its mechanical performance.In addition, be exposed to high temperature and cause having formed from the teeth outwards oxide skin(coating).This oxide skin(coating) is almost as " the α shell " discussed before, except it does not typically extend in material.Therefore if formation temperature can reduce, be, useful.

Conventionally, if use Ti-64 as baseline, because it is generally used in the structure of aluminum medal wood type glof club head, because alloy (its beta transus temperature is lower than Ti-64) can provide obvious benefit.For example ATI425 is a kind of such alloy, and its beta transus temperature is approximately 957 ℃-971 ℃, and the beta transus temperature of Ti-64 is approximately 995 ℃.Therefore, can be expected that ATI425 can form at the temperature lower than Ti-64.Because, at room temperature ATI425, there is the mechanical performance suitable with Ti-64, therefore can expect that the bottom being made by ATI425 alloy is by firmer than the bottom of being made by Ti-64.In addition, ATI425 has the better formability than Ti-64 conventionally, and therefore, in an example, bend is formed by ATI425 sheet material, and the attenuation of the cross section of the bend forming is like this by less than the bend being formed by Ti-64 sheet material.In addition, ATI425 can be cold formation, and this will impel the firmer parts of generation.

In an example, composite material glof club head is to consist of such parts, and these parts consist of Ti-64 and ATI425.The rod head body that comprises Guan Ding, bottom or part bottom, skirt section, hosel and face-flange can be the foundry goods of Ti-64.Right latter part of bottom can form by bend parts, and these parts consist of ATI425 sheet material, and is welded on foundry goods Ti-64 body, for example slit or recessed in, structure as illustrated in Figures 5 and 6 of example.Then the face insert forging is welded on the face-flange of foundry goods Ti-64, makes described bar head complete.

Different manufacture methods can be for building the different parts of glof club head of the present invention.Preferably whole parts are by welding combination.Welding method can be manual for example TIG or MIG welding, or they can be automations, for example laser, plasma, electron beam, ion beam or its combination.If expect or need (selecting owing to material), other associated methods also can be used, for example soldering and binding agent combination.

Parts can produce by punching press and formation method, casting method, method of moulding and/or casting method.As casting method used herein, it has caused the marked change of sample shape, for example, by bar-shaped beginning, its is transformed in flakes, its feature comprised the two variation of size and dimension.In addition, casting is carried out at high temperature conventionally, and can comprise the variation of material microstructure, for example variation of grain shape.Shaping is generally used for describing a kind of like this method, wherein conventionally keeps the size of material when material forming, for example by sheet material, started, and this sheet that is shaped, and not obvious change thickness.Be the example of selecting for the material of the part of glof club head below, it has used punching press and manufacturing process:

A) body after alpha-beta bin part+β bend+alpha-beta

B) body after β bin part+alpha-beta face insert+β bend+alpha-beta

C) body after β bin part+alpha-beta inserts+β bend+β

D) body (heat treated) after β bin part+alpha-beta inserts+β bend+alpha-beta

Be below the example of selecting for the material of the part of glof club head, it has used cast part:

A) body after foundry goods alpha-beta bin part+foundry goods β bend+foundry goods alpha-beta

B) body after the alpha-beta bin part+foundry goods β bend+foundry goods alpha-beta forming

Body after the alpha-beta of the alpha-beta bin part+foundry goods β bend+formation c) forming

D) body after the alpha-beta of foundry goods alpha-beta bin part+foundry goods β bend+formation

Be below the example of selecting for the material of the part of glof club head, it has used the parts that forge:

A) body after the alpha-beta bin part+foundry goods β bend+foundry goods alpha-beta forging

Body after the alpha-beta of alpha-beta bin part+foundry goods β bend+formation of b) forging

The density of beta alloy is greater than the density of alpha-beta or α alloy conventionally.As a result, in the different part of glof club head, use beta alloy to make these parts there is larger quality.Light weight alloy can, for the rear portion of described body, so that whole glof club head quality can remain on the scope of expectation, for example, be about 170g-210g for bat type glof club head.Can use for example combination of aluminium alloy, magnesium alloy, carbon fibre composite, carbon nano tube compound material, glass fiber compound material, reinforced plastics and these materials of material.

Although the various explanation of the present invention has more than been described, be to be understood that the different characteristic of each embodiment can be separately with or with it, combine arbitrarily to use.So the present invention is not limited only to particularly preferred embodiment described here.In addition, be to be understood that those skilled in the art in the invention can and change within the scope of the invention and change according to purport of the present invention.For example face insert can have the thickness so that progressively continuation mode changes.In addition, the shape of slit and position be not limited to disclosed herein those.Therefore the whole favourable variation that, those skilled in the art can easily obtain from disclosure set forth herein (they are in the scope and spirit of the present invention) comprises as other embodiments of the present invention.Therefore scope of the present invention defines as described in additional claim.

Claims

1. a glof club head, it comprises:

Guan Ding, it has defined the upper surface of described glof club head;

Bottom, it has defined the lower surface of described glof club head, and described bottom comprises emission part, bend and rear portion;

Sidewall, it extends between hat top and bottom portion;

Hosel, it extends from Guan Ding, and comprises shaft lever hole; With

Face, it has defined ball and has impacted surface, and intersects at leading edge place and emission part,

Wherein, by emission part, described bend and ball are impacted surperficial spaced apart at afterbody, and described bend comprises antetheca, summit and rear wall, wherein said antetheca extends in the chamber that this glof club head defines, extend in this chamber with described rear wall, and described antetheca is connected at place, summit with rear wall

Wherein this bend and ball impact the 20%-50% that the distance of spaced surface is CG-Z-fc distance, CG-Z-fc distance be between the geometric surface center of this glof club head and gravity center of golf club head along the distance of horizontal Z-axle, described horizontal Z-axle extends to afterbody before this glof club head.

2. according to the glof club head of claim 1, wherein bend and ball impact the 25%-45% that surperficial spacing is CG-Z-fc distance, CG-Z-fc distance be between the geometric surface center of this glof club head and gravity center of golf club head along the distance of horizontal Z-axle, described horizontal Z-axle extends to afterbody before this glof club head.

3. according to the glof club head of claim 1, the height of wherein said bend and width sum are no more than between ground level and gravity center of golf club head along 30% of the CG-Y-g distance of vertical Y-axle.

4. according to the glof club head of claim 3, the height of wherein said bend and width sum are no more than between ground level and gravity center of golf club head along 20% of the CG-Y-g distance of vertical Y-axle.

5. according to the glof club head of claim 1, the thickness of wherein said emission part is at least 50% of minimum face thickness.

6. according to the glof club head of claim 1, the thickness of wherein said emission part reduces towards bend from the adjacent position of face.

7. according to the glof club head of claim 6, wherein said emission part thickness-tapered at least 4%.

8. according to the glof club head of claim 1, the thickness of wherein said emission part is constant at least 60% emission part length.

9. according to the glof club head of claim 1, wherein the thickness of antetheca and the thickness difference of rear wall are less than 40% of antetheca thickness.

10. according to the glof club head of claim 1, wherein antetheca thickness and rear wall thickness are all less than 90% of minimal face thickness.

11. according to the glof club head of claim 1, and wherein in the thickness on summit and antetheca thickness and rear wall thickness, the greater differs and is less than 30%.

12. according to the glof club head of claim 1, the minimum thickness of wherein said emission part is less than 70% of emission part maximum ga(u)ge.

13. according to the glof club head of claim 1, wherein by the thickness of the part bottom in rear and the 30.0mm in bend, is greater than the minimum thickness of emission part, is less than the minimum thickness of emission part by bottom thickness rear and next-door neighbour's bend rear wall.

14. according to the glof club head of claim 1, wherein by bottom thickness rear and next-door neighbour's bend rear wall, is less than 70% of emission part minimum thickness.

15. according to the glof club head of claim 14, wherein by bottom thickness rear and next-door neighbour's bend rear wall, is less than 60% of minimal face thickness.

16. according to the glof club head of claim 1, and wherein ball impacts surface and comprises the top that has defined the first roller radius and the bottom that has defined the second roller radius that is greater than the first roller radius.

17. according to the glof club head of claim 1, and wherein said bend is at least part of is filled with submissive inserts, and described submissive inserts comprises density for the material of 12.0g/cc at least.

18. according to the glof club head of claim 1, and it further comprises the bottom plate being connected in bottom groove, and described groove is defined by bend at least in part.

19. according to the glof club head of claim 1, and it further comprises weight element, and it is attached on glof club head, and intersects with bend.

20. according to the glof club head of claim 1, and wherein this CG-Z-fc distance is 33.0mm at least, and is 450kg-mm at least at the vertical axial rotary inertia that extends through center of gravity ².