CN104645569A

CN104645569A - Golf club head with flexure

Info

Publication number: CN104645569A
Application number: CN201410685944.7A
Authority: CN
Inventors: 查尔斯·E·戈尔登; 乌代·V·德神穆科; 斯蒂芬妮·贝济拉; 马克·C·梅尔赫姆; 斯蒂芬·S·墨菲
Original assignee: Acushnet Co
Current assignee: Acushnet Co
Priority date: 2013-11-25
Filing date: 2014-11-25
Publication date: 2015-05-27

Abstract

A golf club head including a crown, a sole, a hosel, a face and a flexure. The golf club head includes a multi-material construction including a face member, a midsection and an aft member that allows optimization of the mass distribution of the golf club head. The flexure provides compliance during an impact between the golf club head and a golf ball.

Description

There is the glof club head of bend

The related application of cross reference

The application is that the part of the U.S. Patent application No.13/850992 that on March 26th, 2013 submits to continues, do not examine co-pending at present, it is the continuation of the U.S. Patent application No.13/085711 (being US8419569 now) that on April 13rd, 2011 submits to, it is the continuation of the U.S. Patent application No.12/340925 (being US7931546 now) that on December 22nd, 2008 submits to, it is the part continuation of the U.S. Patent application No.12/193110 (present US7758454) that on August 18th, 2008 submits to, it is the continuation of the U.S. Patent application No.11/552729 (present US7497789) that on October 25th, 2006 submits to, and the part that this application is the U.S. Patent application No.13/854709 that on April 1st, 2013 submits to continues, do not examine co-pending at present, it is the continuation of the U.S. Patent application No.13/207344 (present 8409032) that on August 10th, 2011 submits to, and the part that this application is the U.S. Patent application No.13/844954 that on March 16th, 2013 submits to continues, do not examine co-pending at present, it is the part continuation of the U.S. Patent application No.13/720885 that on December 19th, 2012 submits to, do not examine co-pending at present, it is the part continuation of the U.S. Patent application No.13/618963 that on September 14th, 2012 submits to, do not examine co-pending at present, its disclosure is all incorporated herein by reference with them at this.

Invention field

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

Background of invention

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.In club head design, main consideration is loft, ball position, club head face angle, and horizontal plane is protruding, vertical plane roller, center of gravity (CG), inertia, Material selec-tion and the nose heave amount of entirety.Although the focus of this basic standard group normally golf clubs through engineering approaches, other design aspects several also must solve.The indoor design of club head can adjust to realize concrete characteristic, such as, comprise the accessories apparatus of socket or axostylus axostyle, the filler in the perimeter weight in club head and hollow club head.

Glof club head also must be solid, and stand impact repeatedly, this impact occurs in the collision process between golf clubs and golf.The load occurred in this momentary events process can produce the peak force more than 2000lbs (pound).Therefore, a main challenge is that design club head face and the body of rod come resistance to permanent deformation or material yield or the inefficacy caused of breaking.The hollow metal rod of the routine manufactured by titanium typically has the club head face thickness more than 2.5mm, guarantees the structural intergrity of club head.

Racer seeks aluminum medal wood and golf combination usually, and it delivers ultimate range and lands accuracy.The distance that ball is advanced after the blow is represented by ball translational velocity and the rotary speed of ball or the size and Orientation of rotation.Environmental condition, comprises atmospheric pressure, humidity, temperature and wind speed, have impact on the flight of ball further.But these environmental activities have exceeded the control of golf equipment manufacturer.Golf lands accuracy also by being permitted multifactorial driving.Some of these factors design owing to club head, and such as center of gravity and club head face are flexible.

USGA (USGA) is the governing body of U.S. Golf rule, and it has the specification for golf performance.These specifications define consistent golf ball size and weight.Golf initial velocity after the impact of regulation is restricted to 250 feet per seconds+2% (or the maximum initial velocity of 255 feet per seconds) by a USGA rule.In order to realize larger 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.

Usually, golf travel distance is with the function of total kinetic energy giving ball in club head impact process, have ignored ambient influnence.In impact process, kinetic energy shifts from club and is stored in club head and as viscoelastic strain energy as elastic strain energy and is stored in ball.After the blow, the energy stored in ball and club transforms with ball and the translation of club and the form of rotary speed the energy that reverses.Because collision is not perfect flexible, 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 the polymeric material for all manufactured golf.

The viscoelasticity relaxation of ball is a kind of additional source of energy, and it depends on deformation rate.In order to make this effect minimize, deformation rate must be reduced.This can realize by allowing more club head facial disfigurement in impact process.Because flow of metal can be purely elastic, the strain energy therefore stored in club head face returns ball after the blow, which thereby enhances the output speed of ball after impacting.

Multiple technologies may be used for the distortion changing club head face, comprise uniform club head face thinning, thinning club head face with the thickness of ribs and change etc.These designs should have enough structural integrities to stand impact repeatedly, and not permanent shape-changeable ball club head face.Usually, conventional club head also shows the larger change of initial ball velocity after the blow, and this depends on the impact position on the club head face of club.Therefore, this area still needs such club head, and it has the region of larger " happy district " or basic uniform high initial ball velocity.

The breakthrough of technique is in recent years average larger distance for the people played golf provides, and such as, by the consistent thinner thickness of the shell of casting with forward lighter material such as titanium to, manufactures larger club head, keeps constant weight or even lighter simultaneously.Equally, the club head face of club is stable becomes very thin.Thinner club head face makes the coefficient of resilience (COR) maximize.When impacting, the resilience of club head face is larger, and the energy being applied to ball is larger, thereby increases distance.In order to make club head face thinner, manufacturer has taken action to forge, impress or machined metal club head face, and it is usually stronger than casting club head face.Common practice is the metallic rod women's head-ornaments connecting forging or impression by they being welded to the body of rod or bottom.Thinner club head face is easier to lose efficacy.The invention provides a kind of new mode, provide the club head face of club, it has the bending of expectation and resilience when impacting, make COR maximize thus.

Summary of the invention

The present invention relates to a kind of glof club head comprising bend, it changes compliant characteristic compared to known glof club head.

In one embodiment, a kind of glof club head, it comprise before impact cup, district in rear portion cup and tubulose, it extends and connects between this front impact cup and rear portion cup.This front impact cup comprises the club head face limiting batting surface, and extends the socket away from the heel of this impact cup.In this, district is made up of nonmetallic materials, the impact material of cup and the material of rear portion cup before this material is different from.This front impact Bei Hezhong district at least partially defines hat top and bottom portion, and wherein this Guan Ding limits the upper surface of this glof club head, and limits the lower surface of this glof club head bottom this.Transport unit, bend and rear portion is also comprised bottom this.This transport unit extends between this club head face and bend, with make this bend by transport unit and batting surface afterbody spaced apart.This bend comprises antetheca, summit and rear wall, and wherein this antetheca extends in the chamber limited by this glof club head, and this rear wall extends in described chamber, and this antetheca is connected at summit place with rear wall.

In another embodiment, a kind of glof club head, it comprise before impact cup (its at least part of formation bend), rear portion cup, and in tubulose (it extends and connects between front impact cup and rear portion cup in district.This front impact cup comprises the club head face limiting batting surface, and extends the socket away from the heel of this impact cup.In this, district is made up of such material, and it is different from the material of this front impact cup and the material of rear portion cup.This front impact Bei Hezhong district at least partially defines hat top and bottom portion, and this Guan Ding limits the upper surface of this glof club head, and limits the lower surface of this glof club head bottom this.Transport unit, bend and rear portion is comprised bottom this.This transport unit extends between this club head face and bend, with make this bend by transport unit and batting surface afterbody spaced apart.This bend comprises antetheca, summit and rear wall, and wherein this antetheca extends in the chamber limited by this glof club head, and this rear wall extends in described chamber, and this antetheca is connected at summit place with rear wall.

Accompanying drawing explanation

The preferred feature of the present invention openly in the accompanying drawings, wherein similar Reference numeral element like representation class all the time in several figure, wherein:

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

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

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

Fig. 4 is the cross-sectional view of a part for the glof club head of the Fig. 1 shown as thin portion A in figure 3;

Fig. 5 is the perspective view of the glof club head of a part for another embodiment of the present invention;

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

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

Fig. 8 is the opposite side view 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 opposite side view 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 the cross-sectional view of the line 13-13 corresponding to 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 of the glof club head of a part for a kind of embodiment of the present invention;

Figure 31 is the cross-sectional view of the glof club head of a part for a kind of embodiment of the present invention;

Figure 32 is the cross-sectional view of the glof club head of a part for a kind of embodiment of the present invention;

Figure 33 is the cross-sectional view of the glof club head of a part for a kind of embodiment of the present invention;

Figure 34 is the cross-sectional view of the glof club head of a part for a kind of embodiment of the present invention;

Figure 35 is the cross-sectional view of the glof club head of a part for a kind of embodiment of the present invention;

Figure 36 is the cross-sectional view of the glof club head of a part for a kind of embodiment of the present invention;

Figure 37 is the cross-sectional view of the glof club head of a part for another embodiment of the present invention;

Figure 38 is the bottom 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 the cross-sectional view that the glof club head of Figure 38 is got along 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 the cross-sectional view that the glof club head of Figure 41 is got along line 41-41;

Figure 44 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 45 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 46 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 47 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 48 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

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 of a part of glof club head of a kind of embodiment of the present invention;

Figure 51 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 52 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 53 is the cross-sectional view of a part of glof club head of a kind of embodiment of the present invention;

Figure 54 is the cross-sectional view of a part of glof club head of another embodiment of the present invention;

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 bottom view of the glof club head of Figure 55;

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

Figure 58 is the front view of glof club head, which show dimensional characteristic wherein used and coordinate system;

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

Figure 60 is the cross-sectional view of this glof club head of a part of Figure 58;

Figure 61 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 62 is the exploded view of the club head face inserts of the glof club head of Figure 61;

Figure 63 is the cross-sectional view of the glof club head of a kind of embodiment of the present invention;

Figure 64 is the exploded view of the club head face inserts of the glof club head of Figure 63;

Figure 65 is the cross-sectional view of the golf clubs of a kind of embodiment of the present invention;

Figure 66 is the cross-sectional view of the club head face element of a part for golf clubs of the present invention;

Figure 67 is another cross-sectional view of the club head face componentry of Figure 66;

Figure 68 is another cross-sectional view of the club head face componentry of Figure 66;

Figure 69 is the perspective view with the glof club head of many material structures of a kind of embodiment of the present invention;

Figure 70 is the exploded view of the glof club head of Figure 69;

Figure 71 is the cross-sectional view that the glof club head of Figure 69 is got along the line 71-71 of Figure 69;

Figure 72 is the perspective view with the glof club head of many material structures of a kind of embodiment of the present invention;

Figure 73 is the cross-sectional view that the structure of the glof club head of Figure 72 is got along the line 73-73 shown in Figure 72;

Figure 74 is the cross-sectional view of the selectable structure of the glof club head of Figure 72, and it corresponds to the line 73-73 shown in Figure 72 usually;

Figure 75 is the cross-sectional view of the selectable structure of the glof club head of Figure 72, and it corresponds to the line 73-73 shown in Figure 72 usually;

Figure 76 is the perspective view of the structure of the glof club head of another embodiment of the present invention;

Figure 77 is the side view of the golf clubs of Figure 76.

Detailed description of the invention

Except in operation embodiment, or unless otherwise expressly provided, otherwise whole digital scopes, amount, value and percentage such as those of other the amount for material, moment of inertia, position of centre of gravity, loft and shaft angle and description lower part can be read as by wording " approximately " as prefix, even if term " approximately " does not clearly occur it being like this with this value, amount or scope yet.Therefore, unless the contrary indication, otherwise the digital parameters set forth in description below and additional claim is approximate, the performance of its expectation that can obtain sought by the present invention and changing.At least, not intend to use doctrine of equivalents to limit the scope of claim, each digital parameters should at least according to the numerical value of reported significant digits with by using the common technology of rounding up to explain.

Although digital scope and the parameter of illustrating the wide scope of the present invention are approximate, numerical value described in a particular embodiment is as far as possible accurately reported.But any numerical value contains some error that the standard deviation that exists in they respective thermometricallies must be formed in essence.In addition, when setting forth the digital scope of the scope of change at this, can be expected that any combination that can use these values be included in described 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, such as impact is left to the golf of golf tee, COR can use following formula to determine:

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

Here V _club-afterrepresent club speed after the blow;

V _ball-afterrepresent ball speed after the blow;

V _club-frontrepresent club speed before impingement (null value for USGA COR condition); And

V _ball-frontrepresent ball speed before impingement.

Because the initial velocity of ball is 0.0 in collision process, because it is fixing on golf tee, therefore this formula is simplified to below:

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

COR depends on shape and the material property of collision body usually.The COR of best elastic impact is one (1.0), 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), this represents that collision body does not separate after the blow, creates maximum energy loss.Therefore, high COR value is larger ball speed and the instruction of distance.

See Fig. 1-4, show the glof club head 10 of one embodiment of this invention.Club head 10 comprises such structure, with an improved when by golf impact, particularly when club head face bottom is knocked, and the behavior of club.Club head 10 is hollow bodies, and it comprises hat top 12, bottom 14, skirt section 16 or sidewall, and it extends between hat top 12 and bottom 14, and club head face 18 provides ball striking face 20, and socket 22.Be to be understood that skirt section 16 can comprise the peripheral part of hat top 12 and bottom 14, it bends the transition formed between the upper surface of glof club head and lower surface towards each other.This hollow body defines inner cavity chamber 24, its can vacant or can part filling.If it is filled, then preferably inner cavity chamber 24 is filled with foam or another kind of low specific gravity material.In addition, glof club head 10 comprises at least one weight mounting characteristic 34, can to change to make the overall weight of glof club head and/or therefore position of centre of gravity can change, and the weight mounting characteristic of any number can be included in any part on glof club head.

When club head 10 is in address position, hat top 12 provides glof club head upper surface and bottom 14 to provide lower surface.Skirt section 16 extends between hat top 12 and bottom 14, and defines the periphery of club head.Club head face 18 provide batting surface the most forward 20 and comprise be connected to hat top 12, the periphery in bottom 14 and skirt section 16 carrys out closed chamber 24.Club head face 18 is included in toe 26 on club head face 18 geometric center offside and heel 28.Socket 22 stretches out from the hat top 12 of the heel 28 of contiguous club head face 18 and skirt section 16 and provides the syndeton for golf clubs axostylus axostyle (not shown).

Socket 22 can have through hole or blind hole socket structure.Concrete, socket 22 normally tube element, and it can extend through chamber 24 and can stop the position hat top 12 and bottom 14 in the bottom of bottom 14 or it to club head 10 from hat top 12.In addition, the near-end of socket 22 can with hat top 12 ending flush, but not stretch out from club head and leave hat top 12, as illustrated in fig. 1 and 2.

Inner cavity chamber 24 can have any volume, but is preferably greater than 100 cubic centimetres, and this glof club head can have heterozygosis, alley or wood-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, provides the overall weight of expectation and swings weight.Described body can be formed by impression, forging, casting and/or moulding part, and it welds, brazing and/or adhere to each other.Glof club head 10 can be made up of titanium alloy, any other suitable material or combination of different materials thing.In addition, the high-density matter weight element that such as tungsten is formed can be connected to any part such as bottom of glof club head.

Club head face 18 can comprise club head face inserts 30, and it is connected to club head face periphery 32 such as face-flange.Club head face periphery 32 defines opening, for receiving club head face inserts 30.Club head face inserts 30 is preferably by being solder-connected on periphery 32.Such as multiple chad or lappet (not shown) can provide to form carrier, can be tack welded to suitable position for backstay women's head-ornaments inserts 30 or club head face inserts, then club head face inserts 30 and periphery 32 can be combined by laser or plasma welding integral.Club head face inserts 30 by any suitable material such as such as titanium, titanium alloy, carbon steel, stainless steel, beryllium copper and carbon fibre composite and can be combined through grinding, casting, forge or impress and be shaped and make.In addition, hat top 12 or bottom 14 can be formed respectively, and are connected in other parts of described body.

The thickness preferably about 4.0mm of about 0.5mm-of club head face inserts 30.In addition, inserts 30 can be uniform thickness or variable thickness.Such as club head face inserts 30 can have thicker center and thinner outside area.In another embodiment, club head face inserts 30 can have two or more different thickness, and the transition between thickness can be radioactive or progressively.Selectable, club head face inserts 30 can increase towards toe 26, heel 28, hat top 12 and/or bottom 14 thickness or reduce.By understand club head face 18 one of batting surface or rear surface or two can to have at least partially, its be bending, progressively or smooth, change the thickness of club head face inserts 30.

As mentioned above, club head 10 comprises when it clashes into golf, particularly when the lower impact golf of club head face, improves the structure of the behavior of club.Bend 36 is formed in the front portion in Guan Ding, bottom and/or skirt section.Bend 36 is the corrugations extended, and it extends to toe direction at usual heel, and is formed in the front portion of bottom 14.

Usual direction is in a front/back flexible to bend 36, and in away from the club head 10 of club head face 18, provide flex section, to make except local buckling, when club head face 18 impacts golf, its permission club head face 18 is at least partially as unit translation and rotation.This glof club head is designed to two kinds of visibly different vibration modes of the club head face had at the about 6000Hz of about 3000Hz-, and bend constructs the second different vibration mode increasing club head face usually.The local buckling of club head face during first club head face vibration mode is mainly included in golf impact center-pole women's head-ornaments.The deflected profile of the second club head face vibration mode generally includes the whole club head face flexure being similar to accordion, and provides the performance of improvement, for the off-centered impact between club head face and golf.

Bend 36 also configures the rigidity usually keeping Guan Ding/bottom direction upper bottom portion 14, is not subject to obvious impact to make the sound of glof club head.The rigidity lower in Guan Ding/bottom direction in bottom will reduce the tone of the sound that club head produces usually, and this low pitch is normally less desirable.

Bend 36 allows the front portion of club (comprising club head face 18) to be different from possible bending, and does not change size and/or the shape of club head face 18.Concrete, the glof club head body of a part for contiguous club head face is designed to bend at impact process Elastic.This flexibility reduces the reduction of ball speed, and reduces reverse, itself otherwise will the pellet impact that is positioned at lower than fluid shock position be experienced.Desirable impact position is position such on batting surface, it is crossing with the axle being orthogonal to batting surface, and it extends through the center of gravity of this glof club head, and as a result, fluid shock position is usually located in the distance of about 0.5mm-5.0mm on geometric surface center.By providing bend 36 in bottom 14, close to club head face 18, when club head face 18 impacts golf in the position lower than fluid shock position, it is low that this club head provides less ball prompt drop, and reduce reverse.Therefore, for identical swing characteristic, desirable impact position and the pellet impact below club head club head face of the present invention is advanced in the club head uniform impingement position than routine farther.It is useful especially for being arranged in by bend 36 in bottom 14, because fluid shock position is usually located at the position at the geometric surface center higher than metal wood type golf clubs.So most club head face region is usually located at below fluid shock position.In addition, the common tendency of the people played golf reduces the golf impact on club head face.But also can find the result that club head 10 is similar, it has the bend be provided in other parts of club head 10, for being positioned at the impact from geometric surface center towards bend.The club such as with the bend being arranged in hat top can improve pellet impact performance, and it is between Guan Ding and geometric surface center.

In one embodiment, provide bend 36, with the leading edge 38 at least partially making it be arranged essentially parallel to club head 10, to make it usually the same with leading edge bending, and be provided on distance D selected from ball striking face 20.Preferred bend 36 provides the distance D in the 30mm of batting surface 20, in the 20mm of more preferably batting surface 20, and more preferably about 5.0mm-20.0mm.For less glof club head, such as those have the structure of alley wood or heterozygosis, and preferably bend 36 is provided in the 10mm of batting surface 20.

Bend 36 is made up of the first element 40 and the second element 42.First element 40 is connected in the back edge of the transport unit 46 forward of bottom 14, and bends to inner cavity chamber 24 from bottom 14.Second element 42 is connected on the leading edge of bottom 14 part backward, and also bends to inner cavity chamber 24 from bottom 14.Be connected at summit 44 place each other with the end of isolated first element 40 in bottom 14 and the second element 42.Preferably this bend extends and extends on usual heel to toe direction.

The size of bend 36 is selected to be provided in the flexibility expected in pellet impact process.Bend 36 has height H, width W and crimped length C, as shown in Figure 4.Height H extends in the Y-axis direction between summit 44 and the outer surface of bottom 14.Width W is the width of bottom split shed, and it is produced by bend 36, and extends between bend 36 and bottom 14 binding site in the Z-axis direction.Crimped length C extends in the Z-axis direction, and extends at bend 36 and between bottom 14 and summit 44 binding site forward.The height of preferred bend 36 is greater than 4.0mm, preferably approximately the about 15.0mm of 5.0mm-, more preferably about about 11.0mm of 6.0mm-.In addition, bend 36 preferable width is greater than 4.0mm, preferably approximately the about 12.0mm of 5.0mm-, more preferably about about 11.0mm of 7.0-.This bend also has the wall thickness of the about 2.0mm of about 0.8mm-, and those sizes preferably extend on certain length, and it is at least 25% of the whole club head length along X-axis.In addition, the first element 40 curves inwardly from bottom and enters inner cavity chamber, and preferred radius of curvature is the about 45.0mm of about 20.0mm-.Following table 1 shows the size of the embodiment of the present invention, and it is provide more effective energy trasfer lower than the pellet impact of glof club head fluid shock position, and therefore higher COR.

Table 1: bend size

	Highly [mm]	Width [mm]	Crimped 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

Embodiments of the invention described above use finite element analysis to analyze, and determine the effect of COR for glof club head and vibratory response.Concrete, the club head (that is, baseline) lacking bend is contrasted with embodiments of the invention.Table 2 summarizes this and compares.

Table 2: compare

In upper table, " external schema " refers to a kind of model shape, or the natural mode of vibration, unless there is bend, otherwise it does not exist.The usual itself of external schema rotates as club head face part and exists relative to other bend portions of the golf body of rod.Concrete, embodiments of the invention comprise bend, and it extends past the bottom of a part, and this external schema comprises around the interface of club head face between club head face and hat top and rotating, and bends to make bend.Regulate bend, to make external schema at the about 4000Hz of about 2900Hz-, and more preferably occur in the frequency of about 3600Hz, it has analyzed as being is the most effective after the blow in raising ball speed.Actual, the adjustment result in the width W of bend is after the blow, changes immediately with the frequency sine of the about 4000Hz of about 2900Hz-.If external schema occurs in the frequency higher or lower than this scope, then ball speed can in fact lower than baseline embodiment (it does not comprise bend).Use FEA to analyze to the embodiment of the present invention 1, determining bend to regulate provides frequency lower than 2900Hz, and during the external schema of particularly about 2157Hz, ball speed is reduced to lower than baseline glof club head (it does not comprise bend).In addition, comprise bend really up to the mark and provide such glof club head, it does not comprise external schema, and as shown in the embodiment of the present invention 5, and ball speed minimum after being provided only in impact increases.

The transport unit 46 of bottom 14 extends between bend 36 and leading edge 38.Transport unit 46 preferably constructs, and to make golf impact power be transferred to bend 18, and transport unit 46 is not obvious bending.Such as orientation is carried out to transport unit, be not too easy to bending to make it.Concrete, be angle [alpha] with the transmission plane of the transport unit 46 center tangent of bottom 14 (on the direction of head/tail and heel/both toes) relative to the angle of ground level.Angle [alpha] is preferably less than or equal to the loft of glof club head when addressing, and is generally equal to or is less than 90 ° to make the angle between transmission plane and batting surface, unlikely bends in pellet impact process to make transport unit 46.

Bend 36 can be formed by any suitable mode.Such as bend 36 can be cast as the integral part of bottom 14.Selectable, bend 36 can impress or be forged into bottom part.In addition, this bend can by comprise the region that thickens and machined recessed, form bend to make this thickened areas and formed.Such as, rotary grinding method can be used to provide the recessed of expectation, rotary grinding method is generally described in the U.S. Patent No. 8240021 announced on August 14th, 2012, be administered to club head face groove, but the bend with the profile of expectation can use the method, carry out machined by the profile increasing rotating polishing tool size and change cutter.Usually, the method use the instrument with rotating shaft, it is parallel to bottom, and perpendicular to the leading edge of glof club head and cut end, its contoured produces the profile that bend is expected.Then this instrument moves along cutting path, and it is parallel to leading edge usually.As another option in greater detail below, point other bend parts can add the bend on bottom, regulate the bend of bottom further, as illustrated in Figures 5 and 6.

As shown in the embodiment of figure 1, the club head face of this glof club head can comprise club head face inserts, and it impresses respectively, forge and/or machined, and is connected on glof club head body.Selectable, whole club head face can impress, forge or cast as a part for even shell, as illustrated in Figures 5 and 6, thereby eliminates and is combined or the permanent needs be fixed on described body by the club head face inserts separated.As further another option, club head face can be a part for the club head face parts of impression or forging, such as club head face cup, and it comprises the part in bottom, Guan Ding and/or skirt section.In so a kind of embodiment, club head face parts are connected on the remainder of club head body away from about 0.2 inch of club head face plane-about 1.5 inches of distances.Preferably these club head face parts comprise the transport unit of bottom, and it extends to bend, or these club head face parts comprise both transport unit and 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 extended between hat top 62 and bottom 64, club head face 68 (which providing batting surface 70) and socket 69.This hollow body defines inner cavity chamber 74, and it can be vacant or it can filling wholly or in part.

Bend 76 is formed in the part forward of bottom, but it can selectablely be formed in Guan Ding and/or skirt section.Preferred bend 76 is the corrugations extended, and it extends to direction, toe direction at usual heel, and is formed in the part forward of the bottom 64 of glof club head 60 body.Bend 76 provides from the flex section club head face 68 club head 60 backward, and to make its allow when club head face 68 impacts golf, except local buckling, club head face 68 is at least partially as unit translation or rotation.

Bend 76 allows the previous section of club (comprising club head face 68) to be different from other possible bending, and does not change size and/or the shape of club head face 68.This flexibility provides the less reduction of ball speed, itself otherwise will mistakenly hit be experienced, that is, pellet impact position is away from fluid shock position, and not too rotates for the impact lower than fluid shock position.Such as by being provided in the bend 76 in bottom 64, close to club head face 68, this club head provides when pellet impact is in the position lower than fluid shock position, the reduction that ball speed is less.Therefore during use, for general swing characteristic, it is farther to advance in uniform impingement position on the club head face of the club head than routine by the pellet impact below the club head face occurring in club head of the present invention.

In one embodiment, provide bend 76, to make it be arranged essentially parallel to club head 60 leading edge 78 at least partially, and be provided in some distance D of distance batting surface 70.Preferred bend 76 is provided on the distance D in the 30mm of batting surface 70, in the 20mm of more preferably batting surface 70 and most preferably in 10mm.

In embodiments of the invention, bend 76 is made up of the first element 80, second element 82 and third element 83, and forms usually used as point other parts be connected on bottom 64.First element 80 is connected in the back edge of bottom 64 transport unit 65 forward, and bend into inner cavity chamber 74 from transport unit 65.Second element 82 is connected on the leading edge of bottom 64 part backward, and also bend into inner cavity chamber 74 from bottom 64.First element 80 is connected at summit 84 place each other with the end (it is spaced apart with bottom 64) of the second element 82.Preferably this bend extends and extends on usual heel to toe direction.Bend 76 can use machanical fastener to combine, 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, provides multiple bends with different quality and rigidity.In addition, bend being configured to point other parts allows by changing bend, repair the bend of destruction, and it allows bend to be built by the method being different from glof club head remainder, such as, by the remainder of this bend of forging with casting 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 defines height H, width W and crimped length C.The height of preferred bend 76 is greater than 4mm, the preferably approximately about 15mm of 5mm-, 4mm is greater than with width, the preferably approximately about 10mm of 5mm-, the about 2.0mm of about 0.8mm-with wall thickness, and those sizes preferably extend in such length, it is that whole club head length is along at least 25% of X-axis.

Bend 76 comprises third element 83, and it may be used for the flexibility regulating bend 76.Third element 83 can be connected to inner surface (as directed) or the outer surface of bend 76, and local adds the rigidity of bend 76.Third element 83 is preferably made up of such material, and its proportion is lower than the first element 80 and the second element 82 material one of at least.Third element 83 can such as use binding agent to be attached to, or such as by securing member mechanical bond, be welded or brazed onto the first element 80 and the second element 82.Third element can be made up of any metal material such as aluminium or nonmetallic materials such as carbon fibre composite or polyurethane.

The position of the bend in glof club head, size and number can select the behavior providing expectation.Such as can comprise multiple bend, 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, club head face 98 and socket 100 usually.Hat bending pars convoluta 102 is arranged in hat front portion, top 94, and bottom bend portion 104 is arranged in the front portion of bottom 92.Each bend 102,104 preferably bend as the aforementioned is shaped like that with sizing.

In other embodiments, can comprise such bend, it reels around the glof club head body of a part or around whole glof club head body.As shown in Figures 9 and 10, glof club head 110 has hollow body structure, and it is defined by bottom 112, hat top 114, skirt section 116, club head face 118 and socket 120.Bend 122 is formed in glof club head front portion, and reels at glof club head periphery.Bend 122 is formed usually in the plane of club head face plane being parallel to glof club head 110.Distance between bend 122 and club head face 118 along its length variations, can regulate local effect, that is, bend 122 provides flexible for this glof club head.Such as the bend 122 of part can be farther compared to other partial distance club head faces 118.As directed, in one embodiment, the heel of bend 122 and toe than the bottom of bend 122 and hat top portion distance club head face 118 farther.In addition, the size of bend 122 also can change to regulate bend 122 to be supplied to the local effect of this glof club head flexibility.As directed, the bend 122 of part can have different height, width and/or crimped length, carrys out the behavior of the bend 122 of changing section.

In further embodiment, submissive bend can with many materials, light density cladding element is combined, as figs 11-13.Such as glof club head 130 has hollow body structure usually, and it is defined by bottom 132, hat top 134, skirt section 136, club head face 138 and socket 140.Glof club head 130 also comprises bend 142, and it is formed in the front portion of the bottom 132 of glof club head 130.Covering 144 is also included within glof club head 130, and is configured to cover bend outer surface.

Covering 144 is a strip material normally, and it arranges general closed bending portion 142 along bend 142.Covering 144 can be sizing, with the bend 142 making it cover part or all, and it can extend into glof club head 130 do not comprise in the part of bend.Such as and as shown in FIG. 11 and 12, covering 144 extends along bend 142 and covers it, and it is positioned on bottom 132.In addition, covering 144 defines skirt section 136 and the hat top 134 of a part.Preferred covering 144 is made up of such material, and it is different from bottom 132, is preced with the material in top 134 and skirt section 136.Covering 144 is by welding, brazing or adhere in those adjacent parts and be connected in the adjacent part of glof club head 130.Preferably this bend and covering are by titanium alloy as beta-titanium alloy is formed, and width is the about 20.0mm of about 2.0mm-, and thickness is about 0.35mm-2.0mm.

This covering can be included helps control glof club head address position and less desirable both the aesthetic appearance of elimination bend when bottom is placed on match ground.Concrete, this covering can comprise coming the contact surface by changing glof club head, and visualizing rod women's head-ornaments angle when regulating this glof club head to be placed on match ground right overhead.This covering can configure to reel to Guan Ding at glof club head periphery, and the periphery material of a part can be replaced, produce low-density structure, the inertia torque of the quality made by oneself in addition, lower and/or darker position of centre of gravity and Geng Gao is provided, therefore improves performance and distance potentiality.

Effectively, covering provide hat top compliance and bend provide bottom compliance.As another option, covering can remove from bend, only in the part of glof club head away from bottom, provides compliance to make it.In such embodiments, the size of parts is preferably in the scope described in Figure 11-13.

Referring now to Figure 14 and 15, will describe glof club head 150, it comprises bend 162, and it is along its heel to toe length and the vicissitudinous spatial relationship of club head face plane tool.Owing to glof club head club head face geometry and in pellet impact process, be applied to the combination of circle of the stress on club head face, the bottom of club head face experienced by the stress of different magnitude usually on different heel to toe positions.Usual glof club head experienced by the stress lower than the part of this golf clubs directly below club head face geometric center in the part of heel and toe end, and the stress on stress gradient is transferred in bend 162 region bottom.Change the distance of bend relative to the leading edge in club head face plane and/or club head face/crosspoint, bottom, correspond to the relative quantity of the stress at different piece place.The heel of such as bend and toe are preferably arranged closer to club head face plane and glof club head leading edge, bending to make those parts more may experience, and even under lower stress condition, are also particularly like this in off-centered pellet impact process.

Glof club head 150 has hollow body structure, and it is defined by bottom 152, hat top 154, skirt section 156, club head face 158 and socket 160.Bend 162 is formed in the front portion of glof club head, and usually extend up through bottom and skirt section at heel to toe side along this glof club head.Bend 162 generally includes core 164, toe 166 and heel 168.As mentioned above, the part of bend 162 is arranged with the spatial relationship relative to club head face sea level changes, to make core 164 from club head face plane compared to toe 166 and heel 168 further backward.In addition, bend 162 comprises heel and toe extends 170,172, and it extends back along skirt section 156 respectively from heel and toe 168,166.Heel and toe extend 170,172 and also can extend back, and meet on the certain position of skirt section or bottom.

In further embodiment, bend provides mainly through many material structures.See Figure 16-18, glof club head 180 has hollow body structure usually, and it is defined by bottom 182, hat top 184, skirt section 186, club head face 188 and socket 190, and comprises bend 192.Bend 192 is included in the front portion of glof club head 180, and can build as tube element, as directed, and it sandwiches club head face part 194 and opisthosoma divides between 196, to make to which forms adapter ring.The selectable rigidity of this ring tool, allows that club head face is corresponding to the flexure locally occurred at shock point, and comprehensive flexure occurs.Be similar to foregoing embodiments, regulate bend 192, to make to impact the vibration of the about 4000Hz frequency of about 2900Hz-imparted along bend.Select the performance of described ring, as control and optimization COR, and the corresponding characteristic time (CT), along another means of the value of club head face, particularly at the pellet impact away from fluid shock position.

Bend 192 is made up of such material, which provides and divides 196 lower Young's modulus than club head face part 194 adjacent part and opisthosoma.Preferred bend 192, club head face part 194 and opisthosoma divide 196 to be made up of such material, and it can such as be easy to by welding combine.Such as club head face part 194 and opisthosoma divide 196 to be preferably made up of the first titanium alloy, and bend 192 is made up of beta-titanium alloy, as described in more detail below.Bend 192 can construct, with make its thickness be substantially equal to adjacent part thickness and with the flush with outer surface of the outer surface and adjacent part that make bend, as shown in figure 18.Selectable, as shown in figure 19, bend 192a can construct, and is different from adjacent part and to make the outer surface of bend 192a recessed compared to adjacent part to make thickness.As a further alternative, this bend can construct, to make the protruding or rising compared to adjacent part of the outer surface of bend.

Selectable, carbon composite ring can be incorporated to bend 192, which provides lower rigidity.Joint construction, ring geometry (such as ring width and thickness, it can change along with position in ring), ring position, fiber alignment, resinous type and resin content percentage is whole parameters, it is selected to the flexibility optimizing bend 192, to make the ball speed of output improve along the club head face of rod, keep the durability of this glof club head simultaneously.Preferred carbon composite bend is attached to adjacent metal club head face part and adjacent metal opisthosoma divides.As an example, the ring width of this bend can be the about 20.0mm of about 12.0mm-and thickness is the about 3.0mm of about 0.5mm-, and thickness can change according to peripheral position.

Many material bendings portion is incorporated in the glof club head of Figure 20 and 21.Glof club head 200 comprises bend 202, and it depends on material property to change rigidity, is similar to bend 192, but is incorporated with many material structures.Glof club head 200 constructs usually used as hollow body, and it divides 206 to define by club head face part 204, bend 202 and opisthosoma.When club head face part 204, bend 202 and opisthosoma divide 206 in conjunction with time, they form club head face 208, hat top 210, bottom 212, skirt section 214 and socket 216 usually.

Bend 202 comprises front element 218, center part 220 and back element 222.Preferably material is selected, to make front element 218 and back element 222 be easy to be attached to club head face part 204 and opisthosoma divides on 206, to make center part 220 be enough thin with flexibility, providing is the outer vibration mode frequencies of the about 4000Hz of about 2900Hz-.In one embodiment, front element 218 and back element 222 are metals, and center part 220 sandwiches between front element 218 and back element 222, and is made up of carbon fibre composite.Preferred back element 222 and the interface between club head face 208 and front element 218 are spaced at least 6.0mm, more preferably at least 12.0mm.Socket 216 can be made up of metal and/or nonmetallic materials.In one embodiment, club head face part 204 and opisthosoma divide 206 to be made up of titanium alloy, front element 218 and back element 222 are made up of the non-titanium material of low-density and preferred low modulus, such as aluminium or magnesium alloy, and center part 220 is made up of carbon fibre composite, it is enough thin and flexible, provides the frequency response of expectation.In addition, front element and/or back element can be co-molded with composite center part.Usually, select this material, use common practical example to provide enough bond strengths between the parts as binding agent combines.

Glof club head of the present invention also can comprise bend, and it extends along the interface between glof club head and club head face rear portion, as depicted in figures 22 and 23.Glof club head 230 has hollow body structure usually, and it is defined by bottom 232, hat top 234, skirt section 236, club head face 238 and socket 240, and comprises bend 242.Bend 242 is included in the front portion of glof club head 230, and sandwiches club head face 238 and bottom 232, between hat top 234 and skirt section 236.

The selectable rigidity of this bend tool allow club head face correspond to shock point occur local buckling bend comprehensively.Be similar to embodiment above, regulate bend 242, to make to impact the vibration be applied with along the about 4000Hz frequency of the about 2900Hz-of bend.Select the performance of described ring, as control and optimization COR, and the corresponding characteristic time (CT), along another means of the value of club head face, particularly at the pellet impact away from fluid shock position.

Bend 242 is usually located at around the periphery of club head face 238, and makes it extend to the such as bottom 232, rear portion of this glof club head along transition curvature from the club head face of glof club head 230, hat top 234 and skirt section 236.Bend 242 can be as directed discontinuous, is interrupted by the socket part of this glof club head to make it.Bend 242 stops at flange, which provides connection features, for being installed in glof club head 230 by bend 242.Be to be understood that in conjunction with feature can surface provide form banjo fixing butt jointing, lap joint, matching joint are first-class.Bend 242 comprises face-flange 244 and rear flange 246.Face-flange 244 is attached on the periphery edge 248 of club head face 238.The part of rear flange 246 is attached to bottom 232, in the part of hat top 234 and skirt section 236 periphery edge, such as, is attached to hat top flange 250 and flange in the bottom 252.Preferably this club head face and rear flange are the about 12.0mm of about 2.0mm-.

Bend 242 is preferably made up of such material, which provides the Young's modulus lower than glof club head adjacent part.The rear portion of preferred bend 242, club head face 238 and glof club head 230 is made up of such material, and it can such as be easy to by welding combine.Such as club head face 238 and rear portion are preferably made up of the first titanium alloy, and bend 242 is made up of beta-titanium alloy, as described in more detail below.

Selectable, bend 242 can be made up of carbon fibre composite ring, which provides lower rigidity.Joint construction, ring geometry, ring position, fiber alignment, resinous type and resin content percentage are whole parameters, it is selected to the flexibility optimizing bend 242, to make the ball speed of output improve along the club head face of rod, keep the durability of this glof club head simultaneously.Preferred carbon composite bend is attached to adjacent metal club head face and adjacent metal opisthosoma divides.

In another embodiment, as shown in figure 24, the transition position of bend between glof club head club head face and rear portion is attached on club head face element.Such as glof club head 260 has hollow body structure usually, and it is defined by bottom 262, hat top 264, skirt section 266, club head face 268, socket and bend 272.Bend 272 is included in the front portion of glof club head 260, and is usually made up of ring-type element, and it is clamped into club head face 268, and bottom 262, between hat top 264 and skirt section 266.

Be similar to embodiment above, regulate bend 272, to make to impact the vibration applying the about 4000Hz frequency of about 2900Hz-along bend.Bend 272 is positioned at around club head face 268 periphery, and makes such as bottom 262, its rear portion along transition curvature from the club head face of glof club head 260 to glof club head, and hat top 264 and skirt section 266 extend.Bend 272 stops at flange, which provides the example in conjunction with feature for being installed to by bend 272 in 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 club head face 268.The part of rear flange 276 is attached to bottom 262, in the part of hat top 264 and skirt section 266 periphery edge, such as, by being attached to hat top flange 280 and flange in the bottom 282 combines.

Bend 272 is preferably made up of such material, which provides the Young's modulus lower than glof club head adjacent part.The bend 272 of preferred glof club head 260, club head face 268 and rear portion are made up of such material, and it can such as be easy to by welding combine.Such as club head face 268 and rear portion are preferably made up of the first titanium alloy, and bend 272 is made up 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 sandwiches between bend 292 and club head face element 296.Similar, rear interface element 298 sandwiches between bend 292 and rear 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 sandwiches between adjacent component.Front interface element 294 comprises face-flange 302 (it is attached on club head face element 296, has lap joint) and bend flange 304 (it is attached on bend 292, has lap joint).The front interface element 294 of a part exposes to the open air and defines the front surface of a part for glof club head 290.The periphery of the leading edge of bend 292 and club head face element 296 separates by interface element 294.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 has separated rear body member 300 and bend 292.

Glof club head 290 has many material structures.In one example in which, rear body member 300 and club head face element 296 are made up of titanium alloy, and can be made up of identical titanium alloy such as Ti6-4.Front interface element 294 and rear interface element 298 are made up of such material, and its selection is attached on the material of club head face element 296, bend 292 and rear body member 300.In one example in which, this interface element is made up of aluminium alloy, and bend is made up of carbon fibre composite.Interface element 298 should be understood further and must not be configured with constant shape of cross section.

As shown in figure 26, glof club head 320 comprises interface element, and it is for being attached to the adjacent part of glof club head 320 by bend 322.Front interface element 324 sandwiches between bend 322 and club head face element 326.Similar, rear interface element 328 is clamped 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 sandwiches between adjacent component.Front interface element 324 comprises face-flange 332, and it is attached on club head face element 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 to the open air and forms the front surface of a part for glof club head 320.The periphery of the leading edge of bend 322 and club head face element 326 separates by interface element 324.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 body member 330 and bend 322 separate by rear interface element 328.

Glof club head 320 has many material structures.In one example in which, rear body member 330 and club head face element 326 are made up of titanium alloy, and can be made up of identical titanium alloy such as Ti6-4.Front interface element 324 and rear interface element 328 are made up of such material, and its selection is attached to club head face element 326, on the material of bend 322 and rear body member 330.In one example in which, interface element is made up of aluminium alloy, and bend is made up of carbon fibre composite.

See Figure 27, glof club head 350 comprises bend 352, and itself and the transition position between golf clubs rear portion and club head face 354 separate.Usual glof club head 350 has hollow body structure, and it is defined by bottom 356, hat top 358, skirt section 360, club head face 354, socket and bend 352.

Bend 352 adds between club head face 354 and glof club head 350 rear portion.Bend 352 normally ring-type element, it has U-shaped cross-section shape, comprises forward flange 362 and rear flange 364 to make it.Forward flange 362 is attached on the face-flange 366 of club head face 354, and rear flange 364 is attached on the flange at golf clubs rear portion, and it 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 selectable flange configuration.As shown in figure 28, glof club head 380 has hollow body structure, and it is defined by bottom 382, hat top 384, skirt section 386, club head face 388, socket and bend 390.Bend 390 sandwiches between club head face 388 and golf clubs back of head, and it comprises bottom 382 and hat top 384.Bend 390 normally ring-type element, it comprises front bound fraction 392 and rear flange 394.Front bound fraction 392 is parts of bend 390, and it reels and is bonded thereto around face-flange 396, to make its reception face-flange 396 at least partially.The part of rear flange 394 is adjacent and be connected on flange in the bottom 398 and hat top flange 400.

As shown in figure 29, glof club head 410 has hollow body structure, and it is defined by bottom 412, hat top 414, skirt section 416, club head face 418, socket and bend 420.Bend 420 sandwiches between club head face 418 and golf clubs back of head, and it comprises bottom 412 and hat top 414.Bend 420 normally ring-type element, it comprises forward flange 422 and rear flange 424.Forward flange 422 is adjacent and be attached to face-flange 426.Rear flange 424 part is adjacent and be attached on flange in the bottom 428 and hat top flange 430.

The structure of the bend of often kind of embodiment can be selected from many different options, provides the behavior of adjustment in golf impact process.Figure 30-34 shows the different selectable multiple piece construction of bend.Concrete, shown bend comprises bend parts, and it has different selectable geometries.The bend 440 of such as Figure 30 comprises angled shape of cross section, and it comprises bend parts 442, and it is formed usually used as L shaped element part.On the forward flange 444 that bend parts 442 are attached to the golf body of rod 448 and rear flange 446.As directed, forward flange 444 and rear flange 446 are convergence flanges, and it is angled towards each other.Forward flange 444 and rear flange 446 are incorporated in the bottom 450 of glof club head body 448, are usually in the position of glof club head close to club head face 452.As previously mentioned, bend 440 is preferably placed in about 20mm of the batting surface of club head face 452, and the more preferably about about 20.0mm of 5.0mm-.Bend parts 442 such as can be welded by any mechanical joining method, brazing, machanical fastener, diffusion bond, liquid surface diffusion bond, super plasticity formed and diffusion bond and/or use binding agent be attached on forward flange 444 and rear flange 446.A structure, it allows in the fabrication process close to the inner cavity chamber of glof club head, and such as hat top tractive structure or club head face tractive structure, can be easy to make associated methods.

In another embodiment, as shown in figure 31, bend 460 (it has the shape of cross section of waveform or gauffer) is included in glof club head 462.Bend 460 is made up of bend parts 464, on its forward flange 466 being attached to glof club head 462 and rear flange 468.Forward flange 466 and rear flange 468 are incorporated in the bottom 472 of glof club head body 462, are usually in the position of glof club head close to club head face 470.As previously mentioned, bend 460 is preferably placed in about 20mm of the batting surface of club head face 470, and the more preferably about about 20.0mm of 5.0mm-.Bend parts 464 such as can be welded by any mechanical joining method, brazing, machanical fastener and/or use binding agent be attached on forward flange 466 and rear flange 468.

In further embodiment, bend is formed by flange, and normally passage shape bend parts.See Figure 32, glof club head 480 comprises bend 482, and it is formed by bend parts 484, and it is such as attached on the flange of bottom 492 of glof club head 480 by welding, brazing and/or binding agent.Bend 482 is preferably placed in about 20mm of the batting surface of club head face 494, and the more preferably about about 20.0mm of 5.0mm-.Concrete, bend parts 484 are passage shaped element part normally, and it comprises recessed 486, this recessed part that have received forward flange 488 and rear flange 490.Recessed 486 are separated by the bend parts 484 of a part, select it between forward flange 488 and rear flange 490, provide the spacing of expectation.

In similar embodiment, as shown in figure 33, glof club head 500 comprises bend 502, and it is formed by the bend parts 504 with passage shape cross section.Bend parts 504 are such as attached to by welding, brazing and/or binding agent on the flange of formation on the bottom 506 of glof club head 500.Bend 502 is preferably placed in about 20mm of the batting surface of club head face 508, and the more preferably about about 20.0mm of 5.0mm-.Concrete, bend parts 504 are passage shaped element part normally, which defines the slit of the part receiving forward flange 510 and rear flange 512.

In another embodiment, as shown in figure 34, glof club head 520 comprises the bend 522 formed by bend parts 524, and it has passage shape cross section.Bend parts 524 are configured to have usual shark tooth shape cross section, and concrete comprise first surface part and usual flat, and it meets at summit place.Bend parts 524 are such as attached to by welding, brazing and/or binding agent on the flange of formation on the bottom 526 of glof club head 520.Bend 522 is preferably placed in about 20mm of the batting surface of club head face 528, and the more preferably about about 20.0mm of 5.0mm-.Concrete, bend parts 524 are passage shaped element part normally, which defines the slit of the part receiving forward flange 530 and rear flange 532.

See 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 forming passage.Bend parts 544 are configured to usually have shark tooth shape shape of cross section, and concrete comprise first surface part and usual flat, and it meets at summit place.Bend parts 544 are such as attached to by welding, brazing and/or binding agent on the flange of formation on the bottom 546 of glof club head 540.Bend 542 is preferably placed in about 20.0mm of the batting surface of club head face 548, and the more preferably about about 20.0mm of 5.0mm-.

In another embodiment, as shown in figure 36, glof club head 560 comprises bend 562.Bend 562 is formed by the bend parts 564 usually with tubular cross-section.Bend parts 564 are configured to have usual tubular cross-section shape, although and it be shown as there is circular cross-sectional shape, be to be understood that it can have any shape of cross section.Bend parts 564 are such as attached to by welding, brazing and/or binding agent on the flange 568 of formation on the bottom 566 of glof club head 560.Bend parts 564 have the outer shape with flange 568 complementation, and provide mating surface, can be attached on flange 568 to make bend parts 564.Bend 562 is preferably placed in about 20.0mm of the batting surface of club head face 570, and the more preferably about about 20.0mm of 5.0mm-.

See 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, but bend 582 orientation overturns usual shark tooth shape cross section.Concrete, the curvature portion of bend 582 is than the embodiment shown in other further backward.As directed, bend 582 is formed by bend parts 584, and it has the cross section forming passage, but is to be understood that bend 582 can be formed together with the bottom 586 of glof club head 580 as en-block construction.By changing the orientation of bend relative to glof club head remainder, the stress be applied on bend applies on selectable direction, and the behavior of bend is different, is effective harder to make bend.As a result, this bend can by changing orientation to regulate for glof club head.Bend parts 584 to be such as attached to bottom glof club head 580 by welding, brazing and/or binding agent on the flange that formed on 586.Bend 582 is preferably placed in about 20.0mm of the batting surface of club head face 588, and the more preferably about about 20.0mm of 5.0mm-, and thickness preferably about 0.35mm-2.0mm.

See Figure 38-40, glof club head 600 comprises the chamber of prolongation, which provides the bend 602 that can regulate the compliance providing expectation.Such as this glof club head comprises flexible tube, and it can be filled or be partially filled conformable material, adjusts sound, sensation and compliance, or vacant.Glof club head 600 comprises hat top 604, bottom 606, skirt section 608, club head face 610 (which defining batting surface 611) and socket 612 (its combination forms hollow body Golf stem head structure, and this structure defines inner cavity chamber 614).Bend 602 is the tubular structures extended, and it extends to toe direction at heel usually, and defines bend chamber 613.In one embodiment, bend 602 extends along glof club head 600, and to make when glof club head is in address position, it intersects the anterior-posterior plane of club head face geometric center that is vertical, that extend through glof club head 600.

Comprise aperture 616, it is provided to the passage of bend 602 inside, and can close with covering 618, and this covering is preferably on the removable bend 602 be attached in aperture 616.As an example, aperture 616 can be threaded, and covering 618 threaded engagement is in aperture 616, and comprises tool engaging features, and it allows to install and removing covering 618.

As a further alternative, bend 602 completely or partially can be filled with inserts 603, such as high density resilient insert.Such as elastomeric material, it impregnated of high density material such as tungsten, produces the flexible inserts of high density, in tubular bend, or inserts in one of described here other embodiments comprising open slots, after it is in club head face.Inserts may be used for filling or being partially filled bend, changes the acoustics behavior of glof club head.The multiple inserts be made up of the material having different densities and/or have Different Weight distribution can provide and produce inserts, its with different quality and weight distributing installations in bend, to select the final weight of this glof club head and Mass Distribution.In addition, bend can comprise opening, and it extends in inner cavity chamber, and this inserts may be used for occlusion of openings, and to make inner cavity chamber not be exposed to environment, such fragment and water just cannot enter this inner cavity chamber.Exemplary suitable material comprises polyurethane, rubber, thermosetting polymer, thermoplastic polymer, epoxy, foam and neoprene.Selected material has certain degree of hardness, selects it to carry out to combine to provide with bend the flexibility of combination.The hardness normally hardometer A scope 30-95 or hardometer D scope 45-85 of preferably selected material.

See Figure 41-43, will describe the glof club head 620 of another embodiment, it comprises from the outward extending bend 622 in the bottom 624 of glof club head.Glof club head 620 is configured with hat top 626, bottom 624, skirt section 628, club head face 630 (which defining batting surface 631) and socket 632 (its combination forms hollow body structure, and defines inner cavity chamber 634).In the present embodiment, bend 622, along bottom 624, extends continuously along skirt section 628 with along hat top 626, is wound on the toe in skirt section 628 of glof club head 620 to make it.

In further embodiment, 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, club head face 646, skirt section 648 and bottom plate 650 (its combination forms hollow body, which defines inner cavity chamber 651).Bottom 644 and bottom plate 650 combination form bend 652.Bend 652 is passage shape features, and it extends to toe direction at heel usually, and is formed by the first element 654, second element 656 and bottom plate 650.First element 654 is attached to the trailing edge of the front transport unit 658 of bottom 644, and bend into inner cavity chamber 651 from bottom 644.Second element 656 is attached in the leading edge at 644 rear portions, bottom, and also bend into inner cavity chamber 651 from bottom 644.The end (it is spaced apart with bottom 644) of the first element 654 and the second element 656 is combined at summit 660 place each other.Second low side of the second element 656 is combined with the front portion of bottom plate 650, has come the rear portion of bend 652, and it extends to the bottom outer bottom face of glof club head 640 from summit 660, with the thickness making the degree of depth of bend 652 be greater than bottom plate 650.

In alley wood or heterozygosis embodiment, it usually constructs and provides earthed surface, bottom 644 has usual segmented construction, with make only before bottom 644 transport unit 658 earthed surface is provided, and the remainder of earthed surface is provided by the lower surface of bottom plate 650.Preferably this bend extends and extends on common heel to toe direction.

In addition, in this embodiment and the following examples, select the material of bottom plate, in this glof club head, provide the Mass Distribution of expectation, and this material can have the density more higher or lower than the remainder of described body material.Such as because this bottom plate is usual and bend is integrated, it connects and is bordering on the club head face of glof club head, therefore it is beneficial that high density material can be used for alley and heterozygosis embodiment, keep the centre of gravity of glof club head, and more low-density material can be beneficial in rod embodiment, with the periphery making quality of materials (itself otherwise will be in polycrystalline substance) that this glof club head can be distributed to.This bottom plate material is preferably selected from aluminium, titanium, magnesium, zirconium, steel, tungsten, and bottom plate can pass through securing member, brazing, and welding, binding agent or any other suitable method of attachment are attached on glof club head body.In one example in which, alley wood can use the titanium for most of body to construct, and steel or tungsten bottom plate are brazed on titanium body.

In another embodiment, as shown in figure 45, glof club head 670 is similar to Figure 44 to construct, the bottom plate 672 of the bend 674 defining a part is comprised to make it, but in this embodiment, bottom plate 672 is received in the recess of bottom glof club head 670 676.Glof club head 670 is normally hollow, and is constructed by hat top 678, bottom 676, club head face 680, skirt section 682 and bottom plate 672 (its combination forms the hollow body defining inner cavity chamber 684).

Bend 674 is formed by the first element 686, second element 688 and bottom plate 672 usually.First element 686 is attached on the trailing edge of transport unit 690 before bottom 676, and bend into inner cavity chamber 684 from bottom 676.Second element 688 is attached in the leading edge at 676 rear portions, bottom, and also bend into inner cavity chamber 684 from bottom 676.The end (it is spaced apart with bottom 676) of the first element 686 and the second element 688 is combined at summit 692 place each other.Second low side of the second element 688 is combined with the front portion of bottom plate 672, has come the rear portion of bend 674, and it extends to the bottom outer bottom face of glof club head 670 from summit 692.

Bottom 676 and the combination of the second element 688 form that to be in glof club head 670 lower wall recessed, and it receives bottom plate 672.Concrete, the crosspoint between the second element 688 and bottom 676, the lower end of the second element 688 is with downward-extension, and form shoulder such as lappet 689, its adjacent lower surface in bottom 676 is with downward-extension.As a result, in alley wood and heterozygosis embodiment (it makes use of lower surface for ground connection), the front transport unit 658 of bottom 676, bottom plate 650 and rear portion provide the ground connection lower surface of glof club head 670.

See Figure 46, show the glof club head of another embodiment, it comprises bottom plate.Glof club head 700 comprises bottom plate 702, and it is attached on bottom 704 and defines the bend 706 of a part.Bend 706 is made up of the bottom plate 702 of the first element 708, second element 710 and a part.First element 708 and the second element 710 extend into the inner cavity chamber of glof club head 700, and meet at summit 712 place.The lower end of the second element 710 binding site in the second element 710 and bottom 704 is with downward-extension, and form shoulder or lappet 714, it supplements and combines the shoulder 716 of bottom plate 702.Bottom 704 has and constructs stage by stage, with the minimum surface making bottom plate 702 provide glof club head 700.

In another embodiment, as shown in figure 47, glof club head 720 comprises bottom plate 722, and it covers the aperture 724 that to be included in bottom glof club head 720 in 726 and forms the bend 730 of a part.Aperture 724 may be used for the passage being provided to glof club head inner cavity chamber, carrys out positioning of bottom plate 722, and/or allows the quality in larger adjustment bottom plate 722, keeps the monnolithic case of glof club head 720 simultaneously.Such as bottom plate 722 can comprise protruding 728, which increases the quality of bottom plate 722 and extends 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 covering 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, to make not change the bottom plate 742 of combination and the position of centre of gravity of weight element 748 when changing or remove weight element 748, there is provided more effective mechanism, to change the swing weight of the golf clubs comprising glof club head 740.Concrete, bottom plate 742 comprises mounting characteristic such as screwed hole, and it is attached in removable weight element 748.

As a further alternative, any open loop portion described here completely or partly can be filled with inserts such as inserts 743, and it can be high density resilient insert.Such as elastomeric material, it impregnated of high density material such as tungsten, produces high density flexible inserts, in tubular bend, or inserts in one of described here other embodiments comprising open slots, after it is in club head face.Inserts may be used for filling or being partially filled bend, changes the acoustics behavior of glof club head.The multiple inserts be made up of the material having different densities and/or have Different Weight distribution can provide and produce inserts, its with different quality and weight distributing installations in bend, to select the final weight of this glof club head and Mass Distribution.In addition, bend can comprise opening, and it extends in inner cavity chamber, and this inserts may be used for occlusion of openings, and to make inner cavity chamber not be exposed to environment, such fragment and water just cannot enter this inner cavity chamber.Exemplary suitable material comprises polyurethane, rubber, thermosetting polymer, thermoplastic polymer, epoxy, foam and neoprene.Selected material has certain degree of hardness, selects it to carry out to combine to provide with bend the flexibility of combination.The hardness normally hardometer A scope 30-95 or hardometer D scope 45-85 of preferably selected material.

See Figure 49, will 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, club head face 758 and bottom plate 760.Recessed 762 are included in bottom 754, and it have received bottom plate 760, but when installation bottom plate 760 is worked as in shaping, form gap between the antetheca 764 recessed 760 and the front end of bottom plate 760.As a result, this gap defines and is in glof club head close to the bend 766 in the bottom of club head face 758.

In another embodiment, as shown in figure 50, glof club head 770 comprises bottom 772 stage by stage and bottom plate 774, and its combination forms bend 775.Bottom 772 comprises front transport unit 778, and it extends towards the transition wall 780 of bottom 772 backward from club head face 776, which form the antetheca of bend 775.Bottom plate 774 is attached to bottom 772, to make it and transition wall 780 interval to form bend 775.Bottom plate 774 extends back from transition wall 780, and the distance expected is represented by dashed line.

The glof club head of another embodiment comprises recessed bottom and bottom plate, and its combination forms bend, and this golf clubs of a part is presented in Figure 51.Glof club head 790 comprises bottom 792, which defines and receives recessed 794 of bottom plate 796, and defines bend 800 with bottom plate combination bottom this.Concrete, bottom 792 comprises front transport unit 798, extends between its club head face 802 at glof club head and transition wall 804 (its past transport unit 798 extends internally, and forms recessed 794 of a part).Bottom plate 796 is received in recessed 794 neutralizations and is attached to bottom 792, to make the front portion of bottom plate 796 and transport unit 798 separate, forms common V-arrangement gap at bend 800.

See Figure 52, a kind of glof club head 810 of embodiment, it comprises bend 812 and bend adjustment feature.Glof club head 810 comprises hat top 814, bottom 816, skirt section 818 and club head face 820 (which defining batting surface 822).Bottom 816 comprises front transport unit 824, and it extends back from club head face 820 towards the antetheca 826 of bend 812.Antetheca 826 is attached on rear wall 828 at summit 830 place, 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 it such as changes by comprising thickened areas 832, thickened areas 832 by isolated part 834 from bend 812 interval backward.

Bend 812 extends and extends on heel to toe direction, and forms the outer tunnel in bottom 816.Select the thickness of transport unit 824, antetheca 826, summit 830, rear wall 828 and isolated part 834, bend 812 is adjusted to the vibration frequency of expectation in golf impact process.Define the thickness t with particular kind of relationship ₁-t ₇, to make transport unit 824 from the first thickness t adjacent with club head face ₁be transitioned into the second thickness t adjacent with antetheca 826 ₂.The thickness of antetheca 826 is attached to about t of transport unit 824 part from it ₂change to center thickness t ₃with to the thickness t approximating greatly summit 830 ₄thickness.Similar, the thickness of rear wall 828 is from its about t in conjunction with summit 830 part ₄change to center thickness t ₅with to the thickness t approximating greatly isolated part 834 ₆thickness.Backward, the thickness of bottom 816 is from the thickness t of isolated part for isolated part 834 ₆to thickness t ₇change.

As mentioned above, the reverse that the flexibility with the glof club head of the bend being arranged in bottom of the present invention reduces the pellet impact be positioned at below fluid shock position is joined.Because the reduction reversed, the batting surface curvature of glof club head on desirable impact position with below be different, can regulate to make the transmitting of golf and reduce reverse amount.The batting surface curvature of golf clubs between the top edge and the leading edge of golf clubs of club head face is defined as " roller " of club head face.The roller radius of glof club head of the present invention preferably on desirable impact position is different from the roller radius below fluid shock position.Selectable, the roller radius higher than the geometric surface center in golf club head face is different from the roller radius at the geometric surface center lower than golf club head face.As a further alternative, 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.Preferably be greater than the part of the club head face away from bend close to the roller radius of the part of the batting surface of bend, to make the part close to the batting surface of bend more smooth than other parts.Such as in glof club head 810, bend 812 is arranged in the lower surface of this glof club head, and the roller radius R of batting surface lower than a part for fluid shock position ₁be greater than the roller radius R of the part of the batting surface higher than fluid shock position ₂.Roller radius preferably closest to the batting surface part of bend is greater than about 12.0 inches, and more preferably greater than 12.5 inches.

Similar, the curvature of the batting surface of golf clubs between the heel and toe of club head face is defined as " projection " of club head face.Glof club head of the present invention (it comprises the bend extending to glof club head skirt section) provides reduction similar in the sidespin for the golf of the impact departing from centric(al) impact, and therefore has the convex radius being greater than glof club head (it is without the bend on skirt section).Improve convex radius and create more smooth club head face, improve the hot spot region in this golf club head face, this is provided in more effective energy trasfer between glof club head and ball realizes by reducing the inclination of impact departing from center impact.Convex radius preferably closest to the part of the batting surface of the bend in glof club head skirt section is greater than about 12.0 inches, and more preferably greater than 12.5 inches.

Figure 52-54 shows the selectable embodiment of thickness transitions.Here thickness relationship used is used to be provided in the bending distribution that bend and the golf club head adjacent with bend divide middle expectation.In the embodiment shown in Figure 52, the thickness t in transport unit ₁and t ₂at least 50% of smallest shaft women's head-ornaments thickness, and more preferably smallest shaft women's head-ornaments thickness at least 60%, and preferred thickness t ₁be greater than t ₂(t ₁>t ₂).In addition, the anterior wall thickness t of bend ₃with rear wall thickness t ₅difference is less than 40%, is more preferably less than 30% and is even more preferably less than 20%.In addition, the anterior wall thickness t of bend ₃with rear wall thickness t ₅preferably be less than 90% of club head face minimum thickness, and the wall thickness of bend is preferably less than or equal to the thickness t of transport unit ₁, t ₂.The preferred thickness in summit of bend is the thickness t preferably greater than or equal to bend antetheca ₃with rear wall thickness t ₅minimum of a value.In addition, summit thickness t ₄preferably be in anterior wall thickness t ₃with rear wall thickness t ₅middle the greater 30% in, and to be more preferably in 15% of those thickness the greater.

If the thickness being in the base section in about 30.0mm of bend rear wall is greater than the thickness of the transport unit before bend antetheca, then preferably reduce the thickness of the bottom adjacent with bend rear wall.If such as bottom thickness t ₇be greater than the minimum thickness of the transport unit in bend rear wall 30.0mm, then the thickness t of the tight base section below of bend ₆preferably be less than the minimum thickness of this transport unit and be less than smallest shaft women's head-ornaments thickness.Preferred thickness t ₆be less than 70% of transport unit minimum thickness, and be more preferably less than 60% of transport unit minimum thickness.In addition, thickness t ₆be less than 60% of smallest shaft women's head-ornaments thickness, and be more preferably less than 50% of smallest shaft women's head-ornaments thickness.

In another embodiment, as shown in Figure 53, change this transport unit to comprise such thickness, it changes on the length L of transport unit.Identical with embodiment above with the thickness relationship of other parts of bottom for above-mentioned bend, repeat no more.In transport unit, the thickness of transmission at least 60% of this transport unit length L and constant, and more preferably at least 70% of transport unit length L.In addition, the maximum gauge of this transport unit is compared to the club head face of bend antetheca closer to this glof club head.Maximum gauge is usually located at thickness t ₁place, and the minimum thickness of transport unit is usually located at thickness t ₂place, as shown in Figure 53.The minimum thickness of preferred transport unit is more than or equal to the minimum thickness bottom this glof club head.The minimum thickness of transport unit is preferably less than 70% of transport unit maximum gauge and is more preferably less than 60% of transport unit maximum gauge.

In another embodiment, as shown in Figure 54, change this transport unit to comprise such thickness, it changes on the length L of this transport unit, and summit thickness is expressed as the minimum thickness t of the antetheca being greater than bend ₃with rear wall thickness t ₅, and bottom bend, thickness is backward expressed as constant and is usually less than the maximum gauge of transport unit.In such an implementation, the thickness of this transport unit is usually from club head face adjacent place to bend antetheca linear decrease.The linear reduction of this linear decrease or thickness is preferably greater than about 4% (that is, thickness reduces 0.4mm in 10.0mm length) from club head face adjacent place to bend, and more preferably greater than about 5%.In this embodiment, the thickness t of the base section that bend rear wall is contiguous ₆with bottom thickness t ₇the maximum gauge being substantially equal to and being less than transport unit further backward from bend.

In the embodiment of golf clubs of the present invention, (there is the loft of about 13 °-30 °), such as, in alley wood and hybrid type glof club head, in the usual scope below of this thickness: t ₁) 1.4-2.0mm; t ₂) 1.2-1.6mm; t ₃) 1.2-1.7mm; t ₄) 1.2-2.0mm; t ₅) 1.2-1.7mm; t ₆) 0.6-1.2mm; And t ₇) 0.6-4.0mm.Similar, in the embodiment of golf clubs of the present invention, (there is the loft of about 6 °-12 °), such as, in wood-type golf bar head, thickness scope below usually: t ₁) 1.4-2.0mm; t ₂) 0.6-1.6mm; t ₃) 0.5-1.7mm; t ₄) 0.5-2.0mm; t ₅) 0.5-1.7mm; t ₆) 0.5-1.2mm; And t ₇) 0.5-3.0mm.

Referring now to Figure 55 and 56, glof club head 840 comprises bend 842, and what it was at least part of is coated with removable element 844.Glof club head 840 comprises hat top 846, bottom 848, skirt section 850, club head face 852 (which defining batting surface 854) and socket 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, usually contiguous club head face 852, and comprises the mounting portion for removing element 844.Bend 842 comprises antetheca 858, and it is connected at summit 862 place with rear wall 860.Rear wall 860 summit 862 and for can remove element 844 erecting bed 864 between extend.Erecting bed 864 comprises recessed carrier part 866, and its reception can remove element 844 and it be arranged, to make when it is installed, the lower surface that can remove element 844 is relative to the flush with outer surface of adjacent base 848 or recessed.Be included in conjunction with feature 868, can be removablely connected on glof club head 840 to make removing element 844.Can be such as screwed hole in conjunction with feature 868, and can remove the bottom plate that element 844 can bear a heavy burden, it uses threaded fastener to be attached on this screwed hole.

Can remove that element 844 is sizing to be installed in recessed erecting bed 864, to make the antetheca 858 of it and bend 842 spaced apart, form gap 870.Gap 870 provides the opening in bend 842, and this opening provides the path entering into chamber 872 (its by can remove element 844 and bend 842 defines).Gap 870 provides space, and to make in golf impact process, bend 842 can bend, and gap 870 allows antetheca 858 relative to removing element 844 moves in the longitudinal direction.

See Figure 57, glof club head 880 comprises bend 882 (it is crossing with removing element 884 erecting bed) and tradable shaft 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 socket 890.Glof club head 880 comprises can remove element 884, such as weight element, and the bottom 888 of a part comprises the mounting characteristic for this weight element.In this embodiment, mounting characteristic comprises usual cylindrical receptacle 892, and it is inner that it extends to glof club head 880 from bottom outer surface.

Glof club head 880 also comprises bend 882, and it extends along the front portion of bottom 888 on usual heel to toe direction.Bend 882 can have with other embodiments described here about described any particular configuration.

Glof club head 880 comprises tradable shaft system, and it comprises securing member 894, and it is combined with the head of bottom side.Comprise access opening 896, it receives securing member 894 and extends towards socket 890 from bottom 888.

The polycrystalline substance of receiver 892, bend 882 and access opening 896 intersects, and is produced by common part to make this structure.Concrete, the sidewall of receiver 892 is crossing with the sidewall of bend 882, combines in glof club head 880 toe to make this structure.Similar, the sidewall of access opening 896 is crossing with the sidewall of bend 882, combines in the heel of glof club head 880 to make this structure.Receiver 892, bend 882 and access opening 896 structure crossing reduces by being specifically designed to the amount of substance of external structure with described textural association.

The physical attribute of usual control glof club head is provided in the behavior with expecting in glof club head impact process.In metal wood glof club head, Mass Control distribution provides the position of centre of gravity of expectation and the moment of inertia of expectation.As shown in Figure 58-60, the center of gravity of glof club head can be relevant with the feature of any number on this glof club head dimensionally.Desired size scope for golf clubs of the present invention is listed in the following table, and the negative value shown in bracket illustrates (the such as fc-club head face center, direction relative to fixed reference feature; G-ground).

Bend of the present invention, also relative to gravity center of golf club head position dimension, provides the behavior of expectation.It should also be understood that width W, height H and the distance D to batting surface can described whole embodiments be measured here, as shown in figs. 1 and 4.Distance D preferably from batting surface to bend is less than or equal to 30.0mm, is more preferably less than or equals 20.0mm and more preferably 5.0mm-20.0mm.In addition, distance D is preferably the 20%-50% of CG-Z-fc distance and is more preferably the 25%-45% of CG-Z-fc distance.In addition, the height of bend and width sum are preferably in the +/-30% of CG-Y-g distance, and are more preferably in the +/-20% of CG-Y-g distance.

Being reduced in Mass Distribution of the reverse provided by bend of the present invention also has greater flexibility, improves the rotary inertia of glof club head.Concrete, be incorporated to by bend of the present invention in the bottom of glof club head and provide pellet impact, it simulates the launching condition of the glof club head (it has centre of gravity) without bend.Analyze being incorporated to of display bend of the present invention provide and the golf clubs center of gravity without bend reduced the effect that nearly 3.0mm is identical.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, which define and can be placed on periphery to improve the amount of the quality of rotary inertia.So bend of the present invention may be used for providing the behavior of the glof club head with centre of gravity, other quality is placed in this glof club head periphery to improve rotary inertia and center of gravity to be moved backward simultaneously.

The club head face of glof club head of the present invention and the dimensional characteristic of bend must be selected, to make described head can withstand the stress applied in impact process, balance simultaneously and maximize the compliance of the combination provided by bend and club head face.It is generally contemplated that make the sweet spot of glof club head maximize, that is, the club head face of a part, it provides such ball speed after the blow, and it is in the scope close to biggest ball speed.(rules of golf meeting and set up by both United States Golf Association and Royal & Ancient golf club is its objective is) in glof club head, often be lowered in the compliance of club head face of a part close to the position providing the maximum coefficient of resilience (COR), maximum COR is remained in limit that described rule sets up.Frequent, this compliance uses variable club head face thickness to reduce, but variable club head face thickness can introduce stress gradient, and this is owing to geometry.In addition, because the core of club head face is thicker than the peripheral part of this club head face usually, therefore other quality is joined this club head face, it can harmful Mass Distribution of having of composite bent pars convoluta, that is, in woody type glof club head, increase quality forward and upwards.

This club head face structure also may be used for this glof club head and particularly carries out larger control for the stress distribution of club head face and bend and durability.Manufacture deviation can cause porosity, material deviation and α shell, and it needs larger design margin to guarantee durability.Such as, those deviations can need to thicken described bend, it reduce flexibility, and need adjusting rod women's head-ornaments flexibility to compensate this bend compliance, such as, by reducing club head face thickness.But increase and flexible maximum COR also can be caused to increase, this glof club head becomes and does not meet rule like this.

Many materials club head face structure may be used for flexibility and the durability of adjusting rod women's head-ornaments.See Figure 61 and 62, will describe a kind of glof club head 900, it comprises impact surface element 902, and such as club head face inserts or face cup, it has many material structures.Club head face element 902 comprises skin 904, backing 906 and small pieces inserts 908.Outer 904 thin layers normally formed by the first material, it is ferroalloy or titanium alloy preferably, and provides the batting surface at least partially of glof club head 900.Skin 904 can be made up of sheet material or it can be coating, or this panel element can build as common forging.Such as in wood-type golf bar, preferably Young's modulus is used to be the about 130GPa of about 80GPa-, more preferably the titanium alloy of the about about 120GPa of 90GPa-and most preferably about about 115GPa of 95GPa-.But this first material must be made up of steel or titanium alloy, and can be made up of any material (its enough durable impulsive force standing golf), and not depart from the scope of the present invention and content.

Outer 904, although be illustrated as the thin slice of titanium in Figure 62, also can use the titanium of spray type to produce, and not depart from the scope of the present invention and content.Because be usually desirable to, the thickness of outer 904 is kept thin as far as possible, make its size and minimize weight, but structure of the present invention can be realized by the thickness front surface spraying of club head face element 902 obviously being reduced to outer 904, and meet the requirement of USGA, it indicates front bar women's head-ornaments part and must all be made up of identical material.

Backing 906 defines the rear portion of club head face element 902, and comprises recessed 910, and it is shaped and sizingly receives small pieces inserts 908.In this embodiment, the shape of recessed 910 and the shape complementarity of small pieces inserts 908, and have the size receiving small pieces inserts 908, to make when small pieces inserts 908 receives in recessed 910, the front surface of small pieces inserts 908 is concordant with the front surface of backing 906.As shown in this current exemplary of the present invention, backing 906 can be formed by with the first similar material for the formation of outer 904 usually.Specifically mention as this, similar material can be titanium such as Ti-811, SP-700,15-3-32 or any α alloy, any beta alloy or the alpha-beta alloy of other types.

As shown in this current exemplary of the present invention, recessed 910 can have such geometry usually, and it is equal to the geometry of small pieces inserts 908, guarantee the correct combination of whole parts.But, recessed 910 must not have the geometry closely complementary with small pieces inserts 908, in fact it can adopt other geometries, and do not depart from the scope of the present invention and content, as long as outer 904, between backing 906 and small pieces inserts 908 reliable connection is guaranteed at the interface that it has and small pieces inserts 908 is enough.In addition, small pieces inserts 908 also can comprise one or more recessed or aperture such as aperture 912, and it creates space in the final structure of club head face inserts.

Small pieces inserts 908 is formed by such material usually, its Young's modulus be greater than outer 904 and backing 906 material one of at least, and more preferably greater than the material of both this skin and backing.The Young's modulus of the material of small pieces inserts 908 is greater than the material of other elements, which results in this club head face part and moves together with single entity with small pieces inserts 908, has bend less than adjacent club head face part.Even more specifically, the common Young's modulus of this patch material is greater than about 130GPa, more preferably greater than about 150GPa be most preferably greater than about 170GPa.Except having high elastic modelling quantity, this patch material usually has and is greater than about 500MPa, more preferably greater than about 600MPa and the yield strength being most preferably greater than about 700MPa.Finally, this patch material usually has and is greater than about 750MPa, more preferably greater than about 850MPa and the final hot strength being most preferably greater than about 950MPa.

Above use, the material property of disclosed small pieces inserts 908, can see the numerous material also existing and meet those characteristics.In a preferred embodiment, small pieces inserts 908 is made up of steel, and skin 904 and backing 906 are made up of titanium alloy.The material being suitable for small pieces inserts 908 comprises carbon steel, stainless steel, pottery, tungsten, plastics, carbide, boron carbide, metal injection molded material, but any other material meeting above-mentioned explanation can use, and does not depart from the scope of the present invention and content, as long as it meets above-mentioned material performance.

Outer 904 and backing 906 combination with one another form closed chamber, preferably on such position, the geometric center of the club head face (it wraps and contains small pieces inserts 908) of itself and glof club head 900 is overlapping.Described parts use such method to combine, and it defines combination in the abutment surface areas of these parts.Such as associated methods as diffusion bond, liquid surface diffusion bond, friction welding, diffusion brazing and superplastic forming be may be used in conjunction with as described in the method for parts.

In another embodiment, as shown in Figure 63 and 64, glof club head 920 comprises club head face element 922, and such as club head face inserts or face cup, it has many material structures.Club head face inserts generally includes outer 924, backing 926 and small pieces inserts 928.In this embodiment, skin 924 only covers the front batting surface of a part for club head face element 922, with the part making both outer 924 and backing 926 define batting surface.Outer 924 thin layers normally formed by the first material, and provide the batting surface at least partially of glof club head 920.Described layer can be made up of sheet material or it can be coating, or this club head face element can build as common forging.Use such structure advantage to be reduction of combined surface area, which reduce the amount of the surface area that must prepare before bonding.Such as some associated methods need a large amount of surfaces to prepare to produce enough surface conditions, and to produce strong combination, such as diffusion bond and liquid surface combine, and the combined surface area of this minimizing needs less preparation.

Select the size and dimension of outer 924 to provide enough lands, to make completed club head face element be in use durable, and simplify the machinability of described parts.Outer 924 can have circle, ellipse, Freeform, polygon or any other shape expected.

Selectable, small pieces inserts must be completely not closed.The surface of such as small pieces inserts can form the front batting inserts of a part for club head face inserts or the rear surface of a part for club head face inserts.In addition, this small pieces inserts must not be filled in the chamber produced between skin and backing completely.

Select the material property of the skin in above-mentioned embodiment, backing and small pieces inserts, change the rigidity of part described in club head face element, but not the thickness of the different piece of the single material club head face element that places one's entire reliance upon, which results in the radial lower thickness gradient to the neighboring of club head face element from the geometric surface center of club head face.In some embodiments, this many material structure allows club head face element to be built to have usually constant club head face thickness.In other embodiments, this club head face element can have variable thickness, has less thickness gradient, and concrete, the thickness difference of club head face element between the geometric surface center of this club head face and this club head face component periphery is preferably less than about 1.5mm, and is more preferably less than 1.0mm.As a result, the geometry of club head face element is for having less impact in the stress distribution of club head face.In addition, the proportion of described material can be selected, reduce and join club head face to provide the amount of the quality of the rigidity of expectation.

In any embodiment being incorporated with many materials club head face, small pieces inserts preferably has front surface, and its surface area is less than about 400mm ²be more preferably less than about 300mm ².

Figure 65 shows the club head face inserts of a part, and it has the structure similar with the club head face element shown in Figure 61 and 62, and defines dimensional attribute, and what it was equivalent is applied to whole club head faces described here.Club head face inserts 932 comprises the skin 934 with the first thickness d 1, is positioned at the backing 936 with second thickness d 2 of small pieces inserts backward on position, and has the small pieces inserts 938 of the 3rd thickness d 3.As described herein, the measurement of relative thickness d1, d2 and d3 is carried out usually near club head face geometric center, and regardless of such fact, that is, for ease of display, Figure 65 shows the thickness of the position of departing from described center.

As shown in the figure of exemplary as current in this, when compressing in impact process in the front portion of club head face, the first thickness d 1 can keep obtaining relative thin, saves weight.Internal stress caused by the compression stress experienced by outer 934 is less than the internal stress caused by tension force experienced by the rear portion of club head face usually.Preferably this small pieces inserts is arranged in club head face inserts, extends along this small pieces inserts to make the neutral axis N of this club head face inserts.In addition, described small pieces inserts is preferably arranged, to make it closer to the front surface of club head face inserts, but not rear surface.More specifically, the first thickness d 1 is preferably less than about 0.7mm, is more preferably less than about 0.6mm and is most preferably less than about 0.5mm.Backing 936 has the second thickness d 2, and is the part of club head face, and it experienced by the highest internal stress when it is in tensioning due to the impact of golf.So the second thickness d 2 is preferably thicker than the first thickness d 1.More specifically, the second thickness d 2 is preferably greater than about 0.8mm, is more preferably thicker than 0.9mm and is most preferably thicker than 1.0mm.Finally, the 3rd thickness d 3 preferably about 2.2mm of about 0.5mm-of small pieces inserts 938, more preferably about about 1.9mm of 0.8mm-, most preferably about 1.2mm.

Although be disclosed above the thickness of different parts of this club head face inserts, considering the relative thickness of described parts or useful.More specifically, because backing 936 experienced by tensile stress (it is apparently higher than the compression at outer 934 places), therefore the thickness d 2 of backing 936 is preferably greater than the thickness of outer 934.In order to the thickness relationship of the different piece of the different parts of correct acquisition provides enough durability, " face thickness ratio " is that equation (1) as shown below calculates.

This club head face inserts preferred " face thickness ratio " is less than about 0.875, is more preferably less than about 0.66, and is most preferably less than about 0.50.

The common shape of small pieces inserts 938 can be almost circular or oval, and long axis length is about 21.8mm and minor axis length is about 11.6mm.Combined with the roughly thickness of above-mentioned about 1.2mm, the common volume of small pieces inserts 938 is about 370mm ³.More specifically, the preferred volume of small pieces inserts 938 is about 250mm ³-approximately 450mm ³, and preferred volume is about 300mm ³-approximately 400mm ³, all do not depart from the scope of the present invention and content.Finally, because be not usually desirable to, extra weight is joined in the club head face part of this glof club head, be therefore usually desirable to and the weight of small pieces inserts 938 is kept minimum as far as possible.Therefore, more given above-mentioned material performances and volume range above, the common quality of this small pieces inserts is less than 3.0g, is more preferably less than 2.95g and is most preferably less than 2.90g.

Small pieces inserts 938 can adopt dome-like shapes, has the planar side facing outer 934 and the circular side facing backing 936.This structure specifically eliminates the sharp corner at backing 936 rear portion place, high stress point when it can be experience impulsive force.Because the tensile stress at backing 936 place is apparently higher than the compression at outer 934 places, in backing 936, therefore importantly keep the circular side of chamber.Described domical planar side is harmonious with outer 934, this is because described compression is not remarkable like that, and because such dome chamber configuration is easier to use traditional machine-tooled method to produce.

What be to be understood that many material structures described here are equal to is applied to the club head face element with club head face inserts or club head face cup structure.Concrete, this many material structure may be used in club head face cup or part club head face-cup structure, as shown in the embodiment of Figure 75, or face insert structure.

With reference to Figure 66-68, other method small pieces inserts being incorporated to club head face element is described.Show the club head face element 940 of a part, and in final structure, club head face element 940 comprises skin 942, backing 944 and small pieces inserts 946.In a kind of method forming club head face element 940, form backing 944, to make it have projection and/or roller radius, then machined small pieces inserts bag 948 (its configuration receives small pieces inserts 946) and recessed 950 (its configuration receives outer 942) of skin.Preferred shaping outer recessed 950, to make outer 942 and small pieces inserts 946 and the interface between outer 942 and backing 944 be planes, simplifies machined and the combination of described parts.Concrete, form the backing 944 with curvature, then recessed 950 and bag 948 are machined in backing.Then, small pieces inserts 946 is embedded in bag 948 and by skin 942 and embed in recessed 950, and three parts are combined.Finally, outer 942 machineds are provided the curvature of expectation.Preferred machined skin 942, to make the profile of the outline backing 944 of skin 942.As an option, small pieces inserts 946 can be incorporated in backing 944, then on outer 942 backing 944 that can be incorporated into combination and small pieces inserts 946.

Except many material bodies structures, glof club head of the present invention can be incorporated to Geometrical Bending portion.See Figure 69-71, impact cup 953 before glof club head 951 comprises, hat top 955, bottom 957, skirt section 961 (its be connected to hat top 955 and this bottom 957) and socket 959.Club head 951 also comprises rear portion cup 952 (it is spaced apart with impact cup 953 by middle district 954).Middle district 954 is connected to the front flange 956 of impact cup 953, and is connected to the rear flange 958 of rear portion cup 952.Flange 956, the surface of 958 can from the surface indentation impacting cup 953 and rear portion cup 952, and when being connected in impact cup 953 and rear cap 952 to make central district 954, the hat top 955 of club head 951 comprises usually smooth surface.Flange 956,958 can make by with impact cup 953 material identical with rear portion cup respectively, and integrate with it, or they can be made up of another kind of material, and it is light weight preferably.

Glof club head 951 comprises bend 960, its by geometric properties and material property combined, selected compliance is provided.Concrete, bend 960 comprises antetheca 962 and rear wall 964, and it combines at summit 966 place.In this embodiment, impact before antetheca 962 is incorporated in the structure of cup 953, and rear wall 964 is incorporated in the structure in middle district 954.Described wall is such as combined by binding agent, substantially combines at summit 966 place.

Impact cup 953 comprises club head face 968 and flange 970.Club head face 968 defines batting surface 972 and rear surface 974, and in this embodiment, the thickness of the club head face 968 between batting surface 972 and rear surface 974 changes along club head face, and the part of this club head face is overlapping with the geometric surface center of the batting surface with maximum gauge.The thickness of preferred club head face 968 changes from about 0.5mm to about 4.5mm usually.

Middle district 954 normally tube element, it extends and is separated between impact cup 953 and rear portion cup 952.The leading edge in middle district 954 is overlapping with the trailing edge of impact cup, comprises front flange 956.The leading edge of the part in middle district 954 is integrally formed with the rear wall 964 of bend 960, and be installed to impact cup 953 on form bend 960.

Rear cup 952 defines the part backmost of glof club head 951.In general, rear portion cup 952 provides such position, and free quality can enrichment here, the center of gravity of simultaneously favourable Mobile golf bar head and change the moment of inertia.Rear portion cup 952 can build enrichment quality in the pre-selected locations of rear portion cup 952.Such as rear portion cup 952 comprises the enrichment mass fraction 976 of integration, and it is positioned at the toe side of rear portion cup 952, and recessed 978, which reduce the quality of rear portion cup 952 in the heel lateral of rear portion cup 952.In addition, rear portion cup 952 can comprise removable weight element 980, and it may be used for the quality adjusting the rear glof club head 951 of assembling, such as, change the fork weight of the golf clubs being incorporated with glof club head 951.

Front impact cup 953 and rear portion cup 952 manufacture preferably by with titanium, stainless steel, aluminium or its combination casting or forging.Middle district is made up of such material usually, and its proportion is lower than the material of front impact cup and rear portion cup, and the composite that can be strengthened by metal and/or nonmetallic materials such as magnesium, aluminium and/or carbon be formed.In a preferred embodiment, middle district 954 is made up of the carbon fiber reinforced pipe of light weight.In one embodiment, middle district 954 is impacted on cup 942 and rear portion cup 952 before being connected to by other known binding agents such as binding agent such as DP420NS or DP460NS (it is the two component epoxy available from 3M).Selectable, in this, district can impact on cup and rear portion cup before being connected to any method of selected material compatible, such as, by the brazing, welding etc. for metal parts.

Referring now to Figure 72 and 73, glof club head 990 is another embodiments, and it, except many material bodies structures, is also incorporated with Geometrical Bending portion.Impact cup 992 before glof club head 990 comprises, hat top 994, bottom 996, skirt section 998 (it is connected to hat top 994 and bottom 996) and socket 1000.Club head 990 also comprises rear portion cup 1002, and it is spaced apart with impact cup 992 by middle district 1004.Impact cup 992, middle district 1004 and rear portion cup 1002 combination form hat top 994, bottom 996 and skirt section 998.

Glof club head 990 comprises bend 1006, its by geometric properties and material property combined, selected compliance is provided.Concrete, bend 1006 comprises antetheca 1008 and rear wall 1010, and it combines at summit 1012 place.In this embodiment, whole bend 1006 (it comprises antetheca 1008 and rear wall 1010) impacts in the structure of cup 992 before being incorporated into.

Front impact cup 992 is included in the flange 1014 at trailing edge place, and it is connected to the leading edge in middle district 1004.Preferred flange 1014 extends along the whole periphery of front impact cup 992, is attached in middle district 1004 along whole periphery to make it.The outer surface of flange 1014 can insert such amount from the outer surface of the adjacent part of impact cup 992, and it approximates greatly the thickness of middle district leading edge, and to make after bonding, glof club head 990 has smooth continuous outer surface along joint line.

Similar, rear portion cup 1002 is included in the flange 1016 at leading edge place, and it is connected to the trailing edge in middle district 1004.Preferred flange 1016 extends along the whole periphery of rear portion cup 1002, is connected in middle district 1004 along whole periphery to make it.The outer surface of flange 1016 can insert such amount from the outer surface of the adjacent part of rear portion cup 1002, and it approximates greatly the thickness of middle district trailing edge, and to make after bonding, glof club head 990 has smooth continuous outer surface along joint line.

In addition, the overall weight of this glof club head is placed in desirable scope by rear portion cup 1002 preferably counterweight, is about 185g-215g usually for whole wood-type golf bar head of the present invention.Shown rear portion cup 1002 can comprise the wt part 1018 of enrichment, and it is positioned at the inside of rear portion cup 1002.Wt part 1018 can be the material identical with the remainder of rear portion cup 1002, or it can be different material.The wt part that such as rear portion cup 1002 can comprise titanium part and be formed by high specific gravity material such as tungsten, steel and/or zirconium.

See Figure 74, will describe a kind of glof club head of selectable cross section, it has and similar outward appearance in the perspective view of the glof club head of Figure 72.In this selectable embodiment, impact cup 1022 before glof club head 1020 comprises, middle district 1024 and rear portion cup 1026, and be incorporated into the bend 1028 in the structure in middle district 1024.

Bend 1028 is by geometric properties and material property is combined provides selected compliance.Concrete, bend 1028 comprises antetheca 1030 and rear wall 1032, and it combines at summit 1034 place.In this embodiment, whole bend 1028 (comprising antetheca 1030 and rear wall 1032) is formed by the front portion in middle district 1024.Bend 1028 is shown as having smooth fold or the shape of passage, but is to be understood that this bend can be similar to any embodiment described herein and be shaped.

Be similar to embodiment above, impact on cup 1022 and rear portion cup 1026 before middle district 1024 is attached to by such as binding agent combination, brazing, welding etc.Concrete, impact cup 1022 comprises flange 1036 and rear portion cup 1026 comprises flange 1038, and this flange is attached on the corresponding front and rear flange in middle district 1024 respectively.Preferred each flange extends along the whole periphery of associated components, is attached on adjacent part to make the whole periphery in middle district.Usually, flange is configured, to make the continuous surface that the outer surface of glof club head is normally smooth.

The overall weight of this glof club head is placed in the scope of expectation by rear cup 1026 preferably counterweight, is about 185g-215g usually for whole wood-type golf bar head of the present invention.As directed, rear portion cup 1026 can comprise the wt part 1040 of enrichment, and it is positioned at the inside of rear portion cup 1026, but is to be understood that the wt part of enrichment selectablely can be positioned at the outside of rear portion cup in any described embodiment.Wt part 1040 can be the material identical with the remainder of rear portion cup 1026, as directed, or it can be different material.

See Figure 75, will describe the glof club head of another selectable cross section, it has and similar outward appearance in the perspective view of the glof club head of Figure 72.In this selectable embodiment, impact cup 1052 before glof club head 1050 comprises, middle district 1054, rear portion cup 1056, and bend 1058.The structure that this selectable embodiment shows flange can reverse, and the flange such as impacting cup can form inner or outer flange, and it can be applicable to each miscellaneous part equally.

Bend 1058 is by geometric properties and material property is combined provides selected compliance.Concrete, bend 1058 comprises many materials stratification structure.Bend 1058 can be similar to any bend described here and be shaped, the as directed smooth fold of example.In this embodiment, each front impact cup 1052 and middle district 1054 comprise such part, and it extends through the whole geometry of bend 1058 and forms wall thickness layer.Such as middle district 1054 can provide internal layer, and impacts the skin that cup 1052 defines this bend wall.

Middle district 1054 is such as by for selected material, stark suitable binding agent combination, brazing, welding etc. impact on cup 1052 and rear portion cup 1056 before being attached to.Concrete, impact cup 1052 comprises flange 1060 and rear portion cup 1056 comprises flange 1062, and this flange is attached on the corresponding front and rear flange in middle district 1054 respectively.Preferred each flange extends along the whole periphery of associated components, is attached on adjacent part to make the whole periphery in middle district.Usually, flange is configured, to make the continuous surface that the outer surface of glof club head 1050 is normally smooth.

The overall weight of this glof club head is placed in the scope of expectation by rear cup 1056 preferably counterweight, is about 185g-215g usually for whole wood-type golf bar head of the present invention.As directed, rear portion cup 1056 can comprise the wt part 1064 of enrichment, and it is positioned at the inside of rear portion cup 1056.Wt part 1064 can comprise point other weight element 1066, such as a removable counterweight, in the socket 1068 included by its screw thread access rear portion cup 1056.

In another embodiment, as shown in Figure 76 and 77, glof club head 1070 will be described.In this selectable embodiment, impact cup 1072 before glof club head 1070 comprises, middle district 1074, rear portion cup 1076, and bend 1078.Front impact cup 1072 and rear portion cup 1076 can such as be combined by bridging element 1080, combine independent of middle district 1074 to make front impact cup 1072 and rear portion cup 1076.Bridging element 1080 can be positioned on any position around this glof club head, such as, by the Guan Ding at glof club head 1070, forms carrier in the inside in bottom or skirt section.Be to be understood that bridging element selectablely can be positioned at the Guan Ding of this glof club head, the inside in bottom or skirt section or outside, such as, change Mass Distribution and/or the moment of inertia of this glof club head.As directed, glof club head 1070 comprises bridging element 1080, and its heel lateral skirt section along this glof club head extends.Be to be understood that bridging element 1080 can be arranged in along on the different position in district 1074, change the contribution of bridging element 1080 for Mass Distribution and the rigidity of structure, such as bridging element 1080 can extend in the Guan Ding and/or base section of this glof club head along middle district 1074, and can comprise multiple bridging element 1080.

As mentioned above, bend of the present invention provides the lower rigidity in local in the glof club head of a part.Usually this lower rigidity can by selecting the geometry of bend, such as, be passed through to change shape and/or tranverse sectional thickness, and/or by selecting the material of bend part to realize.The titanium alloy of beta (β) or the nearly beta (nearly-β) providing the material of the bend of relatively low stiffness to comprise low Young's modulus can be selected.

Beta-titanium alloy is preferred, this is because they provide the material with relatively low Young's modulus.The function of the rigidity of this plate in the flexure of the plate of its perimeter load under applied stress.The rigidity of this plate directly and Young's modulus and club thickness (that is, t ³) proportional.So when comparing two kinds and having the material sample of same thickness and different Young's, it is larger that the material with lower Young's modulus bends under identical applied force.The energy stored in described plate directly with this plate deflect into ratio, as long as this material shows as elasticity, and the energy stored discharges just after applied stress is removed.Therefore, be desirable to and use such material, the flexure that it can be larger, and therefore store larger elastic energy.

The structure of this bend causes material to extend into the chamber of golf clubs usually, when crooked position is in the bottom of glof club head or hat top, general, this increases CG.When bend is included in hat top, the increase of CG height is obviously larger.Preferably in the embodiment using hat bending pars convoluta, bend Guan Ding part is backward lower relative to bend Guan Ding part forward, reduces the overall 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.Preferred heights difference is greater than 1.0mm, and more preferably greater than 2.0mm, and the position with the Guan Ding of overhead maximum height is between the club head face and bend of this glof club head.

As shown in embodiment above, except bend, glof club head can be formed for the mounting characteristic that can remove weight with one or more, 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, with preferably behind center, face CG-Z-fc value be greater than 33.0mm, and/or the rotary inertia value around this glof club head Y-axis is at least 450kg-mm ².In addition, this glof club head has at least one weight mounting characteristic and at least one can remove weight, and the CG of this glof club head can be changed at least 2.0mm by a certain direction.

In addition, preferably the vibration frequency in golf club head face is mated with the vibration frequency of golf, make the golf speed leaving club head face after impacting maximum.The vibration frequency of club head face depends on club head face parameter, the Young's modulus of such as material and Poisson 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.

Material selec-tion for glof club head also must consider that glof club head passes through the durability of the many impacts of golf.As a result, the fatigue life of club head face must be considered, and this fatigue life depends on the intensity of selected material.So the material for this glof club head must select to provide the biggest ball speed and enough intensity of impacting from club head face to provide acceptable fatigue life.

β-Ti alloy generally provides low Young's modulus, but usually also along with the low strength of materials.β-Ti alloy heat treatment can realize intensity increase usually, but heat treatment also causes the increase of Young's modulus usually.But β-ti alloy cold-working can improve intensity, and not obvious increase Young's modulus, and because this alloy has body cubic crystal structure placed in the middle usually, therefore they usually can cold-working widely.

Preferably the material of about for intensity 900-1200MPa and the about 48-100GPa of Young's modulus is used for the part of this glof club head.Such as preferably such material is used for the club head face of glof club head and/or bend and/or bend covering.The material showing 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 may be used for β-Ti reaches intensity and the acceptable balance of Young's modulus in material.The previous application of beta-titanium alloy needs heat treatment to maximize to make the strength of materials usually, and does not control Young's modulus.When heating, titanium alloy experienced by the phase in version of the crystal structure α body cube β placed in the middle phase in opposite directions of filling from hexagonal close.This temperature occurred that changes is referred to as beta transus temperature.The alloying element added in titanium shows preferential stable alpha phase or β phase usually, is therefore referred to as alpha stabilizers or β stabilizing agent.Even in room temperature by carrying out alloying titanium with the β stabilizing agent of certain tittle, it is also possible for stablizing this β phase.If but such alloy is reheated high temperature, lower than beta transus temperature, then β phase decomposition be transformed into α phase, indicated by laws of thermodynamics.Those alloys are referred to as metastable beta-titanium alloy.

Although thermodynamics rule only predicts the formation phase of α phase, in fact many non-equilibrium phases are also there is during β phase decomposition.These non-equilibrium phases α ', α " and ω represents.Report magnitudes that each these have different Young's modulus and this Young's modulus mutually " < α < ω that usually meets β < α.Therefore, can infer if expect to be improved by heat treatment the intensity of β-titanium, then advantageously carry out by this way, that is, α will be comprised that " material of phase is as preferred catabolite, and we eliminate or minimize the formation of α and ω phase." formation of phase by promoting from the quencher of alpha+beta region from Phase Diagram of Materials, and it means that this alloy should from the temperature quenching changed lower than β for α.So preferably by β-Ti alloy (its heat treatment makes to form α from β phase " maximize mutually) this glof club head for a part.

Heat treatment method is selected to provide the phase in version of expectation.Thermal process variables such as maximum temperature, retention time, the rate of heat addition, quencher speed is selected to produce the material composition of expectation.In addition, heat treatment method can be that selected alloy is special, because the effect of different beta stable elements is different.The such as 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 about 700 DEG C-about 800 DEG C.So for such alloy, solution treatment temperature scope will about 25-50 degree Celsius lower than beta transus temperature, and in practice process, this alloy will carry out solution-treated at about 650 DEG C-about 750 DEG C.After water quencher, at this β-Ti alloy of low temperature aging, can gain in strength further.The ionization meter of the material of solution-treated is about 650MPa, and the intensity of heat treated alloy is 1050MPa.

The example of suitable 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 race alloy represented, such as Ti-36Nb-2Ta-3Zr-0.35O etc. (percentage by weight).Near β titanium alloy can comprise: SP-700, TIMET18 etc.

Usually, preferably the club head face cup of glof club head of the present invention or club head face inserts are made up 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 this golf body of rod (namely, be different from the part of club head face cup, club head face inserts, bend and bend covering) preferably by α, alpha-beta or beta-titanium alloy are 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 construct as point other parts, and is connected on the remainder of glof club head body.Such as these bend parts can be impressed by forging sheet material and be formed, and the remainder of described body constructs as one or more cast part.Impression bend parts can be better than this bend of casting, because casting can introduce mechanical defect.Such as cast material often suffers mechanical performance lower compared with the same material of the form of forging.As an example, the Ti-64 of casting form has had the mechanical performance of about 10%-20% lower than forging Ti-64.This is because the granularity in foundry goods is obviously greater than forging form, and thinner granularity result in mechanical performance higher in metal material usually.

In addition, titanium casting also form the superficial layer being referred to as " α shell ", a surf zone, and it has the α phase titanium be dominant, and it is formed by the titanium being rich in interstitial oxygen concentration.In itself and α phase of itself be not harmful, but it tends to stone and crisp, the golf impact (it causes bending of repetition) such as repeated in fatigue is applied like this, α shell can damage the durability of parts.

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

Usually, if use Ti-64 as baseline, because it is generally used in the structure of metal wood type golf club head, then alloy (its beta transus temperature is lower than Ti-64) can provide obvious benefit.Such as such alloy is an ATI425, and its beta transus temperature is about 957 DEG C-971 DEG C, and the beta transus temperature of Ti-64 is about 995 DEG C.What therefore, it is expected to is that ATI425 can be formed in the temperature lower than Ti-64.Because ATI425 has with Ti-64 in the suitable mechanical performance of room temperature, the bottom that therefore it is expected to be made by ATI425 alloy is by stronger than the bottom of being made up of Ti-64.In addition, ATI425 has formability more better than Ti-64 usually, and therefore in one example in which, bend is formed by ATI425 sheet material, and by thinning for cross section less than the bend formed by Ti-64 sheet material for experience.In addition, ATI425 can be cold formation, and it will produce stronger parts further.

In one example in which, many material golf club heads are made up of such parts, and these parts are made up of Ti-64 and ATI425.Comprise Guan Ding, bottom or section bottom, skirt section, socket and face-flange body can be the foundry goods of Ti-64.Right latter part of bottom can be formed by bend parts, and these parts are made up of ATI425 sheet material, and is welded on foundry goods Ti-64 body, such as slit or recessed in, such as, structure shown in Fig. 5 and 6.Then the club head face inserts of forging is welded on the face-flange of foundry goods Ti-64, has carried out described bar head.

Different manufacture methods may be used for the different parts building glof club head of the present invention.Preferably whole parts combine by welding.Welding method can be that manual such as TIG or MIG welds, or they can be automations, such as laser, plasma, electron beam, ion beam or its combination.If expect or need (owing to Material selec-tion), other associated methods also can use, and such as brazing and binding agent combine.

Parts can use impression and formation method, casting method, method of moulding and/or casting method to produce.As used herein, casting is a kind of method, which results in the marked change of sample shape, such as, by bar-shaped, its is transformed in flakes, its feature include both size and dimension changes.In addition, casting is carried out at high temperature usually, and can comprise the change of material microstructure, the change of such as grain shape.Shaping is generally used for describing a kind of so method, material forming wherein, usually keeps the size of material simultaneously, such as, by sheet material, and this sheet that is shaped, and not obvious change thickness.Here is the example of the Material selec-tion of part for glof club head, it uses impression and manufacturing process:

A) body after alpha-beta club head face element+β bend+alpha-beta

B) body after β club head face element+alpha-beta club head face inserts+β bend+alpha-beta

C) body after β club head face element+alpha-beta club head face inserts+β bend+β

D) body (heat treated) after β club head face element+alpha-beta club head face inserts+β bend+alpha-beta

Here is the example of the Material selec-tion of part for glof club head, it uses cast part:

A) body after foundry goods alpha-beta club head face element+foundry goods β bend+foundry goods alpha-beta

B) body after the alpha-beta club head face element formed+foundry goods β bend+foundry goods alpha-beta

Body after the alpha-beta of the alpha-beta club head face element c) formed+foundry goods β bend+formation

Body after the alpha-beta of d) foundry goods alpha-beta club head face element+foundry goods β bend+formation

Here is the example of the Material selec-tion of part for glof club head, it uses the parts of forging:

A) body after the alpha-beta club head face element forged+foundry goods β bend+foundry goods alpha-beta

Body after the alpha-beta of the alpha-beta club head face element b) forged+foundry goods β bend+formation

The density of beta alloy is greater than the density of alpha-beta or α alloy usually.As a result, in the part that glof club head is different, use beta alloy to produce those parts with larger quality.Light weight alloy may be used for the rear portion of described body, to make whole glof club head quality can remain on the scope of expectation, such as, is about 170g-210g for wood-type golf bar head.The combination of material such as aluminium alloy, magnesium alloy, carbon fibre composite, carbon nano tube compound material, glass fiber compound material, reinforced plastics and those materials can be used.

Although described above is the explanation that the present invention is different, be to be understood that the different characteristic of each embodiment can be used alone or uses with its combination arbitrarily.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 expect carrying out changing and changing in the spirit and scope of the invention.Such as club head face inserts can have with the thickness of progressively continuation mode change.In addition, the shape of slit and position be not limited to disclosed herein those.Therefore, the whole favourable change that those skilled in the art can easily obtain from disclosure set forth herein (it is 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:

Front impact cup, it comprises the club head face limiting batting surface, and the socket stretched out by the heel of this impact cup;

Rear portion cup; With

District in tubulose, it extends and connects between this front impact cup and rear portion cup, and wherein in this, district is made up of nonmetallic materials, the impact material of cup and the material of rear portion cup before this material is different from,

Wherein this front impact Bei Hezhong district at least partially defines hat top and bottom portion, and wherein this Guan Ding limits the upper surface of this glof club head, and limits the lower surface of this glof club head bottom this, comprises transport unit, bend and rear portion bottom this,

Wherein this transport unit extends between this club head face and bend, with make this bend by transport unit and batting surface afterbody spaced apart,

Wherein this bend comprises antetheca, summit and rear wall, and wherein this antetheca extends in the chamber limited by this glof club head, and this rear wall extends in described chamber, and this antetheca is connected at summit place with rear wall.

2. the glof club head of claim 1, what wherein this bend was at least part of is formed in impact cup.

3. the glof club head of claim 2, wherein this bend is whole is formed in impact cup.

4. the glof club head of claim 1, what wherein this bend was at least part of is formed in middle district.

5. the glof club head of claim 4, wherein this bend is whole is formed in middle district.

6. the glof club head of claim 1, wherein this bend is whole is formed in middle district.

7. the glof club head of claim 1, wherein in this proportion of the material in district lower than the material of rear portion cup.

8. the glof club head of claim 1, wherein in this proportion of the material in district lower than the material of front impact cup.

9. the glof club head of claim 1, its bridging element extended between impact cup and rear portion cup before being included in further.

10. the glof club head of claim 9, wherein this bridging element is configured in the skirt section place of this glof club head.

11. 1 kinds of glof club heads, it comprises:

Front impact cup, it comprises the club head face limiting batting surface, and extends the socket away from the heel of this impact cup;

Rear portion cup; With

District in tubulose, it extends and connects between this front impact cup and rear portion cup, and wherein in this, district is made up of such material, the impact material of cup and the material of rear portion cup before this material is different from,

What wherein this bend was at least part of is formed in impact cup, and comprise antetheca, summit and rear wall, wherein this antetheca extends in the chamber limited by this glof club head, and this rear wall extends in described chamber, and this antetheca is connected at summit place with rear wall.

The glof club head of 12. claims 11, wherein this bend is whole is formed in impact cup.

13. the glof club head of claim 11, what wherein this bend was at least part of is formed in middle district.

The glof club head of 14. claims 11, wherein this bend is whole is formed in middle district.

The glof club head of 15. claims 11, wherein in this proportion of the material in district lower than the material of rear portion cup.

16. the glof club head of claim 11, wherein in this proportion of the material in district lower than the material of front impact cup.

The glof club head of 17. claims 11, its bridging element extended between impact cup and rear portion cup before being included in further.

18. the glof club head of claim 17, wherein this bridging element is configured in the skirt section place of this glof club head.