CN1161656A - Set of golf club irons having a low density rear cavity perimeter insert for selected weight distribution of each iron - Google Patents

Abstract

This invention is an improved set of golf club cavity backed irons, wherein each golf club iron head has a structure for increasing the volume of the cavity (28) using an undercut perimeter which permits weight redistribution to increase the thickness of the top line (16), the toe (20), and the sole (18) of the club head. The undercut portion of the invention is sealed from moisture by means of a low mass density insert (30) wherein the insert is made of a low mass density material which addable serves the function of dampening sound and vibration upon ball impact. A weight shift slot (30) is used to vary the center of gravity between the toe (20) and heel (22) as a function of the loft of the club to provide maximum accuracy of trajectory and ball hitting capability.

Description

Each iron head has one group of iron of the low density rear cavity periphery insert that can be used to select its distribution of weight

Invention field

The present invention relates generally to all irons, be particularly related to a kind of modified form iron, it have one selectively with the weight of iron from cavity area be distributed to its periphery go up, in order to improve the low-density chamber periphery insert of golf club performance.In a preferred embodiment of the present invention, provide one group of complete iron.By using a weight transfer groove that can be freely moves towards the excellent bar elbow direction or the bat point direction of iron, can be selectively relatively all the other irons in this group iron improve the distribution of weight situation of each iron in this group.

Background technology

In prior art, wish that it is well-known adopting periphery in an iron.This hope is based on the following fact and produces: though off-centered impacting away from golf club hit face or impacted hitting a little of surface.But owing to the quality of iron is that direction towards described periphery distributes, the path of therefore batting becomes more accurate, and therefore, most modern iron has one and hits the back chamber that the dorsal part of face extends towards iron.Redistributed on the periphery of golf club head because of forming the iron weight that this chamber reduces.The volume of chamber is big more, and the metal quality that can redistribute the golf club head periphery is just big more.But, be reduced to an one-tenth-value thickness 1/10 if impact the thickness on surface, when being in one-tenth-value thickness 1/10, the face intensity of hitting will become too low so that can not overcome the depressed deformation phenomenon that square stance hits face.The recessed change of hitting face can reduce the energy that passes to ball, thereby reduces the distance that ball can hit.And because this to hit the influence that the recessed realization of face resembles ball itself be unpredictable, it can influence the degree of accuracy of ball path thus.Therefore, thus people wish to find and a kind ofly can further increase chamber volume but can not make the face of hitting the too thin face of hitting that can not make with ball impact time that becomes that the method for recessed change takes place.A kind of method that chamber volume is increased is the cross section that increases chamber, because it can or impact the back on surface near the front of club head, perhaps in other words, forms the back chamber periphery of a toe cut.But, this toe cut periphery formed one can with earth and moisture accumulation within it hold back the district, this district that holds back can bring a surface integrity problem that produces because of getting rusty, and perhaps can influence the attractive in appearance of club head unfriendly, thereby weakens its coml success.Therefore, people wish a kind of iron can be provided, it has perimeter weight, and can be by using the periphery of a toe cut, selectively weight is distributed to the head periphery from chamber, the periphery of described toe cut has overcome the problem that above-mentioned moisture and earth gather, thereby can not influence the attractive in appearance or outward appearance of club head.

As well-known in the golf club field, one group of iron commonly used comprises 9 or 10, the iron of variation to some extent on other parameters such as angle of inclination of angle that handle length, weight, caput and excellent bar form and club head.For instance, iron with minimum weight, the long and minimum batting height of long handle is No. 1 iron normally, and have the long and the highest batting height of short handle normally be called the wedge shape iron, such as a high strike (lob) wedge shape iron.It has been found that in all bats of one group of iron, the bat of circumferential distribution weight needn't have identical distribution of weight.More particularly, it has been found that, in the bat long, that batting is highly lower, such as No. 1 iron, No. 2 irons etc., they preferably have the chamber weight that moves towards the warp of the direction transfer center of gravity of bat point.People also have been found that and carry out distribution of weight so that more chamber weight is shifted to excellent bar elbow is favourable in the short type bat such as No. 8, No. 9 irons and wedge shape iron.People also further find, in medium-sized iron such as No. 4, No. 5 and No. 6, carry out seldom or not carrying out that distribution of weight moves is favourable, here be to utilize a bigger back chamber to redistribute weight, it can make weight substantially equally be distributed between bat point and the excellent bar elbow, thereby the center of gravity that makes club head remains on its central axis substantially, laterally crosses the face that hits of bat.By those have realized that this change distribution of weight hope designers and the design the prior art iron, on the chamber periphery, used added weight, with along with these changes and distribution of weight are finished in the variation of bat length and batting height.But, use added weight but to have bad effect by this way, promptly increased the weight of chamber, therefore, reduced originally because of forming the advantage that chamber brings.

Therefore, people also wish to provide a kind of can be towards the direction of the bat point of iron or excellent bar elbow, distribute the device of the weight of each bat in one group of iron selectively, it can not reduce because of forming the advantage that chamber brings and weight can being shifted to iron head periphery.

General introduction of the present invention

The present invention by provide one group wherein each iron head selectively the iron of distributed weight overcome the defective of prior art, this is to obtain a chamber volume that increases by the periphery that utilizes a toe cut to realize, the periphery of described toe cut avoids being subjected to surrounding environment influence with a low-density insert of being made by the lighter material of the weight such as plastics, rubber or synthetic rubber.The relatively low density of described insert material increases any weight for described chamber; but it has protected the toe cut periphery of described chamber really; prevented that water or earth or other foreign substance from entering described toe cut zone, otherwise can influence the image appearance of iron or even can reduce its performance.Sound and damping vibration that described insert sends in the time of can also being suppressed at bat bump golf.

A key character of the present invention comprises that one is positioned at the weight transfer groove of described chamber periphery, and described weight transfer groove is the insert flange that is used for accepting the corresponding low-density insert of a shape.The advantage of importance of the present invention and its concrete structure is: it can change to another kind of bat from a kind of bat, thereby can improve the distribution of weight characteristic in the scope of complete one group of iron.Adopt this mode, can utilize unique texture of the present invention, by changing position of centre of gravity towards the excellent bar elbow of iron or the direction change distribution of weight situation of its bat point.Therefore, for instance, the longest iron, i.e. No. 1 iron in one group of iron of the present invention, a kind of effect of moving weight towards the bat point direction of iron is provided, and short iron, for example, the wedge shape iron, the effect that provides a kind of direction of the excellent bar elbow towards iron to move weight.Adopt this mode, even can further improve the performance characteristic of iron, thereby can hit long and more straight long ball, hit more high ball, and can control the batting of short iron.

Purpose of the present invention

Therefore, main purpose of the present invention is to provide a kind of modified form iron, it has a back chamber that increases, be used for strengthening the weight of iron is transferred to the redistribution of iron periphery from described cavity area, with the batting accuracy rate that improves golf club and improve the batting path.

Another object of the present invention is to provide the iron of one group of modified form, each iron has the peripheral chamber of a toe cut, it can increase the area of described chamber, and can further redistribute weight towards the direction of golf club head periphery.

Another purpose of the present invention is to provide one group of iron, each iron has a chamber volume that increases because of the periphery that uses a toe cut, described chamber mat one low-density insert and seal mutually with surrounding environment separates, described low-density insert can be made by the lighter material of a kind of weight, such as plastics or rubber or other analog.

A further object of the present invention is to provide the iron of one group of modified form, each iron has the weight of transferring to the redistribution of iron head periphery from a chamber volume that increases, the face that hits, the distribution of weight between bat point and excellent bar elbow of wherein crossing described iron can be organized in the iron at this and change to another kind of bat from a kind of bat, so that the performance improvement of each iron is arrived optimal state, thereby can hit desirable hitting distance and path.

Brief Description Of Drawings

By below in conjunction with the specific descriptions of accompanying drawing, will more be expressly understood above-mentioned purpose of the present invention and advantage and other purpose and advantage to a preferred embodiment of the present invention.In each accompanying drawing:

Fig. 1 is the front perspective view of an iron of the present invention;

Fig. 2 is its upward view;

Fig. 3 is the view of its bat point direction;

Fig. 4 is its rearview;

Fig. 5 is the vertical view of Fig. 4;

Fig. 6 is the view of its excellent bar elbow direction;

Fig. 7 to Figure 15 provides the rear perspective view of one group of iron of the present invention,

Figure 16 is the cutaway view of a kind of typical iron of the present invention; And

Figure 17 is a three-dimensional exploded view of the present invention, is used for illustrating the shape of its insert.

The specific descriptions of preferred embodiment

Now see also each accompanying drawing, can see, the iron head 10 of golf club of the present invention comprises that one is connected in the head 12 of a socket 24, and described socket is suitable for accepting a ball handle (not shown).Described head 12 by blow face or impact surface 14 determined that the described face that hits constitutes its profile by the sharp 20 and one rod bar elbow 22 of a crestal line 16, a bottom surface 18, a bat.As can being clear that in Fig. 3, Fig. 5 and Fig. 6, iron golf club head 10 of the present invention comprises crestal line structure 16 uniqueness, that thicken.In fact, the thickness of described crestal line 16 makes it can preferably adopt two angles or hip line shown in Fig. 6 the best.Can also be clear that in Fig. 2 and Fig. 3 the thickness of described bottom surface 18 of the present invention and described bat point 20 also comes thickly than the thickness of common iron golf club head.Of the present invention these are thicker than the part of thickness of crestal line, bottom surface and the bat point of common iron golf club head, are to be realized by a chamber volume with mode for example shown in Figure 16, the increase that obtains in the present invention.As shown in figure 16, all irons of the present invention have a back 26, and each iron advantageously comprises a rear chamber 28 by a low-density insert 30 encirclements.

Insert 30 can be made by for example a kind of low density plastics's material that can be bent in its construction process in the back 26 of described bat iron head 10, perhaps make, comprise rubber for example, synthetic rubber, epoxy resin or such as low density-metal material or a kind of low-density ceramic material or a kind of binder that constitutes by these mixtures of material (matrix) of aluminium or titanium such as boron carbide by other low density material.Be understandable that the main effect of described low-density insert 30 provides a seal and accumulates in the zone between described chamber 28 and the bat periphery to prevent earth, moisture and other material of not expecting, and can significantly not increase this regional weight.Therefore, importantly, comprise that the described material of low-density insert 30 should have low mass density or proportion, and should be a kind ofly to be suitable for providing one can stop the airtight of these external undesirable substances or watertight barrier layer.This insert is the zone that is used for filling between the toe cut periphery 34 of the open chamber 28 of remainder and surrounding structure.Described periphery is toe cut, and promptly its area is to increase towards the back direction of hitting face 14, further to redistribute the weight of bat iron head towards its peripheral direction.The secondary role of described insert is sound and the vibration that takes place when weakening described iron golf club head and golf bump.

Final profile at the back 26 of the one group of iron disclosed herein of knowing clearly shown in Fig. 4 and Fig. 7 to Figure 15.As for example shown in Figure 4, the back 26 of iron head 12 has formed the neighboring of a back chamber 28.But, all other irons that are different from prior art, described back chamber 28 is separated with described back periphery 26 by a low-density insert 30, described low-density insert as preamble in conjunction with Figure 16 pointed, be to be used for filling and sealing the toe cut periphery 34 shown in Figure 16.

As what from Fig. 4 and Fig. 7 to Figure 15, can be clear that, except the routine variation of head self, such as in one group of iron, the angle that the angle of inclination of club head, caput and excellent bar form and the variation of angle of eccentricity, the back profile of each iron head is identical basically.But, in the present invention, remain additional from bat to the bat that constitutes novel structure of the present invention and change.More particularly, with Fig. 4 example for example, can see that described back periphery 26 is arranged on its lowest part, is adjacent to described bottom surface 18 and has a center of gravity transfer groove 32, described low-density insert 30 is provided with one and is complementary or corresponding insert flange 36.

The entire depth of groove 32 extend past chambers 28 arrives the back side of hitting face 14, and be used for changing selectively the weight that distributes or redistribute iron periphery of the present invention, because it can constitute a high desnity metal material removal amount of removing from the zone of the back periphery 26 that is adjacent to chamber 28 effectively.Therefore, when the direction of described center of gravity transfer groove 32 is during more towards the direction of the bat point of iron, it can be effectively moves the center of gravity of the iron direction towards excellent bar elbow, when described groove when the direction of excellent bar elbow moves, center of gravity will move towards the direction of bat point.And a wide or elongated center of gravity transfer groove 32 is that to be used in those all bats be in the light and long elongated iron, and therefore maximum weight is distributed with again and helps the correct path of formation in departing from the impacting of center of gravity.Therefore, the Fig. 4 that shows first kind of iron in the teambatting of the present invention has illustrated the applicable cases of a weight transfer groove 32, the width of this weight transfer groove in whole group bat is maximum, and the middle part of weight transfer groove 32 is that the excellent bar elbow direction towards club head moves, and effectively the direction of center of gravity towards club head bat point 20 is moved thus.Equally, Fig. 7 shows the 2nd group of iron, and wherein the width of groove 32 is reduced slightly, and the center of groove is towards the excellent bar elbow of club head and mobile degree has also been reduced slightly.

In the bigger iron in club head angle of inclination shown in Figure 8, the degree that the width of groove and groove are shifted to excellent bar elbow all reduces gradually, Fig. 8 shows the 3rd kind of iron, Fig. 9 shows the 4th kind of iron, and Figure 10 shows the 5th kind of iron.From Figure 11 of the 6th kind of iron is shown, described groove is that the direction towards the bat point of club head moves, and the width of groove continues to reduce.In Figure 12 that the 7th kind of iron is shown, the width of groove continues to reduce, and moving in aggravation towards the bat point.In Figure 13 that the 8th kind of iron is shown, the phenomenon and the further aggravation that have still kept this width to reduce and moved towards the bat of club head point, Figure 14 shows the 9th kind of iron.Figure 15 shows a kind of typical wedge shape lofting mashie of one group of iron of the present invention, and its groove 32 is the narrowest, and its mobile of bat point towards club head is to be in maximum degree.Adopting this mode, the 1st kind of iron of the present invention have-and great majority are towards the direction of the bat point of club head and mobile center of gravity.The position of centre of gravity of elongated bat of the present invention makes the distance of batting increase and improve the accuracy rate of long iron batting.On the other hand, short type of the present invention, high bat have-most of centers of gravity that move towards excellent bar elbow, so that the batting controllability of the best is provided for short iron.Table I provides the groove parameter of one group of iron preferred embodiment disclosed herein.

Table I

The parameter of weight transfer groove

The amount of movement of the length groove of the number groove of iron is towards excellent bar elbow (-)

(inch) (inch) is towards bat point (+)

1 1.00 -0.100

2 0.95 -0.075

3 0.90 -0.050

4 0.85 -0.025

5 0.80 0.0

6 0.75 +0.025

7 0.70 +0.050

8 0.65 +0.075

9 0.60 +0.100＝-

Wedge shape iron 0.60+0.100

Two other key character of the present invention comprises the alignment score line of the uniqueness of hip line shown in Figure 6 and the face that hits 14 shown in Figure 1.Described hip line has prevented that the thick crestal line of this uniqueness from disperseing the phenomenon of golfer's notice, adopts the score line pattern of triangular design to strengthen in the process of bat top aiming ball bat and hits aliging of face and ball.

Therefore, can see, the invention provides one group of modified form iron, wherein each iron head The iron head of golf club has one can be towards its periphery, particularly redistribute bat in the chamber back chamber region The novel structure of weight. This is by using one can redistribute weight to increase crestal line, the bat point of club head The volume that increases chamber with the toe cut periphery of the thickness of bottom surface is finished. But, bottom of the present invention Slotting part can may be gathered moisture, earth and other potentially harmful substance within it in the batting process Sealing separates. This sealing function is finished with a low-density insert, and described low-density insert Well to be made by a kind of little mass density material, such as plastics, rubber, epoxy resin or low density-metal material, Such as titanium or aluminium. Another feature of the present invention comprises the outward appearance of its structure, can be from one group of iron In a kind of iron change to another kind of iron. More particularly, in the present invention In, a weight transfer groove is used to change bat point and excellent bar elbow along with the variation at the angle of inclination of club head Between center of gravity, whether being a kind of elongated, low bat or a kind of short type, high strike according to described bat Bat provides bat the most accurately path and striking force.

Therefore, for person skilled in the art, can also make various improvement and increase the present invention Delete. For example, can change easily concrete shape and the material component of insert part of the present invention. In addition, Also can make the improvement that can not reduce structural advantages of the present invention to following this mode, namely at one group of iron of the present invention Center of gravity can when changing to another kind of iron from a kind of iron in the golf club To be moved. Therefore, all these improve and additions and deletions all should be regarded as only by appended claims with Within protection scope of the present invention that its equivalent limits.

Claims (17)

1. one kind has the iron that impacts the surface, and the described surface that impacts is defined by a crestal line, a bottom surface, bat point and a rod bar elbow, and the described back that impacts the surface has a central bore by thicker periphery definition; Described iron comprises:

One towards the described chamber that impacts surface increase area; And

One structure is an annular, is positioned at described chamber, is close to the insert of described chamber periphery.

2. iron as claimed in claim 1, it is characterized in that, described iron is made by a kind of material with first proportion, and described insert is made by a kind of material with second proportion, and described first proportion is greater than described second proportion.

3. iron as claimed in claim 1, it comprises that also one is positioned at the described intramarginal elongated slot of described chamber, the flange that described slotting personage has is corresponding with described insert, be used for keeping being with described chamber periphery next-door neighbour's relation.

4. iron as claimed in claim 3 is characterized in that, described groove has designated length and the position that is used for influencing described iron center of gravity.

5. iron as claimed in claim 4, it is characterized in that, described iron is taken from the iron group of being made up of all irons, described all irons have one respectively with No. 1 iron, No. 2 irons, No. 3 irons and No. 4 corresponding club head of iron angles of inclination; Described groove is provided with along described chamber periphery, contiguous described bottom surface, and its distance of leaving described excellent bar elbow is left the distance of described bat point less than it.

6. iron as claimed in claim 4, it is characterized in that, described iron is taken from the iron group of being made up of all irons, described all irons have one respectively with No. 6 irons, No. 7 irons, No. 8 irons and No. 9 corresponding club head of iron angles of inclination; Described groove is provided with along described chamber periphery, contiguous described bottom surface, and its distance of leaving described bat point is left the distance of described excellent bar elbow less than it.

7. iron as claimed in claim 3 is characterized in that, the entire depth of the described chamber of described groove extend past and stretching in the described chamber.

8. iron as claimed in claim 1, it also comprises a hip line.

9. one group of iron, each iron have one and impact the surface by what a crestal line, a bottom surface, bat point and a rod bar elbow defined, and the described back that impacts the surface has a central bore by a thick periphery definition; Each described iron comprises:

One towards the described chamber that impacts surface increase area; And

One structure is an annular, is positioned at described chamber, is close to the insert of described chamber periphery.

10. one group of iron as claimed in claim 9, it is characterized in that, each described iron comprises that one has the material of first proportion, and described insert is made by a kind of material with second proportion, and described first proportion is greater than described second proportion.

11. one group of iron as claimed in claim 9, it is characterized in that, each described iron comprises that one is positioned at the described intramarginal elongated slot of described chamber, the flange that described insert has is corresponding with described insert, be used for keeping being with described chamber periphery next-door neighbour's relation.

12. one group of iron as claimed in claim 11 is characterized in that, in each described iron, each groove has a designated length and a position that is used for influencing described iron center of gravity.

13. one group of iron as claimed in claim 12, it is characterized in that, each described iron is taken from the iron group of being made up of all irons, described all irons have one respectively with No. 1 iron, No. 2 irons, No. 3 irons and No. 4 corresponding club head of iron angles of inclination; Described groove is provided with along described chamber periphery, contiguous described bottom surface, and its distance of leaving described excellent bar elbow is left the distance of described bat point less than it.

14. one group of iron as claimed in claim 12, it is characterized in that, each described iron is taken from the iron group of being made up of all irons, described all irons have one respectively with No. 6 irons, No. 7 irons, No. 8 irons and No. 9 corresponding club head of iron angles of inclination; Described groove is provided with along described chamber periphery, contiguous described bottom surface, and its distance of leaving described bat point is left the distance of described excellent bar elbow less than it.

15. one group of iron as claimed in claim 11 is characterized in that each groove extends in each described iron.

16. one group of iron as claimed in claim 11, each iron also comprises a hip line.

17. one group of iron as claimed in claim 9 is characterized in that, each described iron has a batting surface, and this batting surface has a triangle pattern, helps to aim at the score line of ball.

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