JP2017063903A - Weighted golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head having internal weighting that places the golf club center of gravity at a point near the face and the sole of the golf club head.SOLUTION: The present invention relates to a golf club head having a center of gravity located at a point close to the face and the sole of the golf club head. In particular, the golf club head comprises a hollow body including a weight lip 440 and a face component, and the weight lip extends from the sole inside the body 410 toward the face component without making contact with the face component. The golf club head preferably is an iron-type golf club head. In another embodiment, the golf club head may be of non-iron-type and has a weighting bar 90 inside the hollow body in proximity of the face component, with the weighting bar across at least a portion of the sole. The weighting bar is movable inside the hollow body to allow adjustment of the center of gravity.SELECTED DRAWING: Figure 31

Description

[Cross Reference]
This application is a U.S. Pat. No. 8,257,195 filed Sep. 4, 2014 which claimed priority based on U.S. Provisional Application No. 61 / 635,363, filed Apr. 19, 2012, which is incorporated herein by reference in its entirety. Which is a continuation of U.S. Patent Application 13 / 475,497, filed on May 12, 2012, was granted as U.S. Patent No. 8,328,661 on December 11, 21012, and was issued on July 26, 2012. U.S. Patent Application No. 13 / 667,692, filed on Apr. 9, 2013 as U.S. Patent No. 8,414,420 and filed on Nov. 2, 2012, which is a continuation of U.S. Patent Application No. 13 / 559,279. No. 8,425,346, filed on Apr. 23, 2013, and a continuation-in-part of U.S. Patent Application No. 13 / 751,447, filed Jan. 28, 2013, 2013 Filed on March 7 It was part of U.S. Patent Application No. 13 / 788,173 is a continuation application is a continuation-in-part application of U.S. Patent Application No. 13 / 797,507, filed March 12, 2013.

  The present invention relates to a golf club head having an internal weight that positions the center of gravity of the golf club head close to a face and a sole.

  Golfers often prefer to use a golf club that has a low center of gravity and is close to the face and that is easy to control the golf ball during play.

  There is a need for golf club heads with improved internal weights.

  One aspect of the present invention is an iron type golf club head comprising a body having a top line, a sole, a heel side, a toe side, a front opening and a ridge, and a face element having a striking face covering the front opening, The ridge is located near the front opening and extends in the direction of the face element without contacting the striking face. The ridge extends from the heel side toward the toe side, There is no part. In some embodiments, the ridge can extend beyond the front opening. In another embodiment, the face element may be a face cup having an upper flange and a lower flange, each upper flange and lower flange extending away from the striking face. In a further embodiment, the upper flange has a first length, the lower flange has a second length, and the first length is shorter than the second length. In a further embodiment, the second length is in the range of 5 mm to 10 mm. In another embodiment, the lower flange is variable in thickness.

  In other embodiments, the face elements can be welded to the body forming a weld line and the ridges can extend over the weld line. In other embodiments, the front opening may extend completely through the body such that the body has a back opening, and in a further embodiment, the iron-type golf club head includes the back opening. It can have a back cap that covers it. In another embodiment, the protruding portion has an upper surface and a front side surface, and the upper surface is disposed so as to be substantially orthogonal to the front side surface. In one embodiment, the protrusion is cast integrally with the body.

  Another aspect of the present invention is an iron type golf club head comprising a face cup having a striking face, an upper flange, a lower flange, and a body having a top line, a sole, a heel side, a toe side, a front opening, and a protrusion. The front opening completely penetrates the body to form a rear opening, the upper flange has a first length, and the lower flange has a second length longer than the first length. The striking face has a thickness different from that of the striking face, and the protrusion is located in the vicinity of the front opening and extends through the front opening toward the face element so as not to contact the face cup. In one embodiment, the ridge extends over at least a part of the sole. In a further embodiment, the iron type golf club head has a plurality of pins, each pin including the sole and the ridge. Between the parts.

  In one embodiment, the protrusion is formed of a plurality of materials. In a further embodiment, at least one of the plurality of materials is a tungsten alloy. In another embodiment, the face cup is welded to the body to form a constant thickness weld seam. In another embodiment, the iron type golf club head may have a back cap fixed to the body and covering the back opening.

  In another embodiment, the ridge has an upper weight portion and a lower support portion, the upper weight portion is formed from a first material having a first density, and the lower support portion has a second density. The first density can be greater than the second density.

  The foregoing has outlined the invention, but the foregoing and further objects, features and advantages thereof will be appreciated by those skilled in the art from the following detailed description of the invention and the referenced drawings.

1 is a front perspective view of a first embodiment of the present invention. FIG. 2 is a perspective view of the embodiment of FIG. 1 without a face element. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. It is a front perspective view of 2nd Example of this invention. FIG. 5 is a cross-sectional view taken along lines 5A, 5B-5A, and 5B in FIG. FIG. 5 is a diagram showing an alternative configuration of a cross-section along line 5A, 5B-5A, 5B in FIG. It is a front perspective view of 3rd Example of this invention. FIG. 7 is a cross-sectional view taken along line 7A, 7B-7A, 7B of the embodiment shown in FIG. FIG. 7 shows an alternative configuration of a cross-section along line 7A, 7B-7A, 7B of the embodiment shown in FIG. It is a front perspective view of 4th Example of this invention. FIG. 9 is a diagram excluding the face element of the embodiment shown in FIG. 8. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. It is a front view of the weight bar structure used for the Example shown by FIG. It is a front view of the weight bar structure used for the Example shown by FIG. It is a front view of the weight bar structure used for the Example shown by FIG. It is a front view of the weight bar structure used for the Example shown by FIG. It is a front view of the weight bar structure used for the Example shown by FIG. It is a front view of the weight bar structure used for the Example shown by FIG. It is a front perspective view of 5th Example of this invention. FIG. 13 is a diagram excluding the face element of the embodiment shown in FIG. 12. FIG. 14 is a cross-sectional view of the embodiment shown in FIG. 12 taken along line 14-14. It is a front perspective view of 6th Example of this invention. FIG. 16 is a cross-sectional view of the embodiment shown in FIG. 15 taken along line 16-16. It is a front perspective view of the Example of 7th Example of this invention. FIG. 18 is a left perspective view of the embodiment shown in FIG. 17 excluding the face element. FIG. 18 is a right perspective view of the embodiment shown in FIG. 17 excluding the face element. FIG. 18 is a front perspective view of the embodiment shown in FIG. 17 excluding the face element. FIG. 21 is a cross-sectional view of the embodiment shown in FIG. 18 taken along line 21-21. FIG. 20 is a cross-sectional view of the embodiment shown in FIG. 17 taken along line 22-22. It is a front perspective view of 8th Example of this invention. It is a front perspective view of 9th Example of this invention. 1 is an exploded view of a multi-piece golf club head configured to include any of the embodiments described above. FIG. It is a rear view of 10th Example of this invention. FIG. 26 is another rear view of the embodiment shown in FIG. 25. It is a perspective view from the sole side of the Example shown by FIG. FIG. 27 is a cross-sectional view of the embodiment shown in FIG. 26 taken along line 28-28. It is a back perspective view of the 11th example of the present invention. FIG. 30 is an exploded view of the embodiment shown in FIG. 29. FIG. 30 is a cross-sectional view taken along line 31-31 of the embodiment shown in FIG. 29. FIG. 31 is a cross-sectional view of the face cup shown in FIG. 30 taken along line 30-30. It is sectional drawing of 12th Example of this invention. It is sectional drawing of 13th Example of this invention. It is sectional drawing of 14th Example of this invention. It is sectional drawing of 15th Example of this invention. It is sectional drawing of 16th Example of this invention. It is sectional drawing of the 17th Example of this invention.

  The present invention is generally directed to a golf club head having an internal weight that approximates the center of gravity (GC) of the golf club to both the face and the sole of the golf club head. In particular, the present invention is particularly directed to weights that are integrally formed within fairway wood, hybrid and small iron golf club heads.

  A first embodiment of the present invention is shown in FIGS. 1-3. The golf club head 10 of the first embodiment is a fairway wood head, and includes a body 20 having a sole 30, a crown 40, a hosel 50, a cavity 22 and a weight lip 80, and a face element having a striking face 62, a return portion 64 and a cavity 66. 60. The striking face 62 preferably has a high characteristic time (CT). The face element 60 is preferably integrally formed by forging with an alloy such as 6-4 titanium or stainless steel, while the body 60 is preferably integrally cast with such an alloy. In other embodiments, the face element 60 and the body can be manufactured differently by other materials commonly used in the manufacture of golf clubs. In some embodiments, face element 60 and body 20 are integrally formed. The body 20 can further include other weight elements, such as weight pads, thickened wall regions, or removable weight screws (not shown), which can be adjusted by the manufacturer or user to any weight. To be able to.

  Once the body 20 and face element 60 are formed, they are welded together along the opening 25 in the front surface of the body 20. The weld seam 70 shown in FIG. 3 has a certain relatively small thickness, preferably approximately 0.031 inches. In order to achieve a low and center of gravity CG without affecting the weld seam 70, a weight lip 80 is placed inside the cavity 22 near the opening 25. This structure allows any mass to be positioned in the front of the club head sufficiently low while avoiding welding problems.

  The weight lip 80 is preferably cast into the body 20, but in other embodiments it can be welded or mechanically secured to the body 20 and extends upwardly from the sole 30 and from the opening 25 in the body 20. It is made to protrude. When the golf club head 10 is assembled, the weight lip 80 extends into the cavity 66 of the face element 60 so as not to contact the striking face 62. The weight lip 80 preferably has at least 20% of the mass of the body 20, more preferably 30% of the body. For example, the golf club head 10 can have a weight distribution as shown in Table 1.

図４、図５Ａに示される他の実施例においては、本発明の突条部に対応する重りリップ８０の上部重り部分８４の下に溝８２が延びて、オーバーハング構造を形成し、これにより重りリップ８０の重量を減らしており、これにより、ゴルフクラブヘッド１０の全体の重量を減らしながら、一方において、フェース要素６０の近傍に十分な重量を維持して重心の位置を低く、前方に位置させている。
図５Ｂに示される更なる実施例においては、重りリップ８０は複数材料で形成され、重りリップ８０の他の部分より高い密度の材料から成る上部重り部分８４を持つようにしている。特に、重りリップ８０の底部の支持部分８６はステンレススチールで形成され、一方。上部重り部分８４はタングステン合金から成り、重りリップ８０の底部の支持部分８６に溶接或いは他の手段により固定される。この実施例においては、溝８２は、好ましくは、フェース要素６０から僅かに離れて底部支持部分８６内に延び、高密度の上部重り部分によって与えられる付加的な重量をより好適に相殺するようにしている。

In another embodiment shown in FIGS. 4 and 5A, a groove 82 extends below the upper weight portion 84 of the weight lip 80 corresponding to the ridge of the present invention, thereby forming an overhang structure. The weight of the weight lip 80 is reduced, thereby reducing the overall weight of the golf club head 10 while maintaining a sufficient weight in the vicinity of the face element 60 to lower the position of the center of gravity and position it forward. I am letting.
In a further embodiment shown in FIG. 5B, the weight lip 80 is formed of a plurality of materials and has an upper weight portion 84 made of a higher density material than the other portions of the weight lip 80. In particular, the support portion 86 at the bottom of the weight lip 80 is formed of stainless steel, while. The upper weight portion 84 is made of a tungsten alloy and is fixed to the support portion 86 at the bottom of the weight lip 80 by welding or other means. In this embodiment, the groove 82 preferably extends slightly away from the face element 60 and into the bottom support portion 86 to better offset the additional weight provided by the dense top weight portion. ing.

  As shown in FIGS. 6, 7A and 7B, in another embodiment, the weight lip 80 extends inwardly from the face element 60 and upwards in the direction of the crown 40, and is a groove 82 that is shaped like a hook. And a larger, square upper weight portion 84 and a narrower lower support portion 86. Like the embodiment shown in FIG. 5B, in the embodiment shown in FIG. 7B, the upper weight portion 84 is formed as a separate piece of a high density material, such as a tungsten alloy, and is welded, bonded, or bonded to the lower support portion 86. Alternatively, it is fixed by other fixing means. This enables more custom manufacturing functions in the manufacture of golf club heads, and by adjusting the material properties of the weight lip 80, the GC and moment of inertia can be adjusted to the end user.

  In another embodiment shown in FIGS. 8 and 9, the body 20 of the golf club head 10 includes a weight bar 90 corresponding to the ridge, which is the weight bar 90 of the golf club head 10 inside the body 20. It is fixed only to the heel side 24 and the toe side 26 so as to effectively straddle the entire sole 30. This structure enables the face element 60 and the sole 30 to be activated without excessively affecting the mass characteristics because the weight bar 90 functions as a torsion spring while the golf club head 10 impacts the ball. . In some embodiments, the weight bar 90 is cast integrally with the crown 90 and the heel side 24 and the toe side 26, and the sole 30 is fixed after the casting is finished, but in other embodiments, the weight bar 90 is It may be manufactured separately and then fixed to the heel side and toe side of the body 20 by mechanical fixing means, epoxy, welding, brazing, or fixing means well known to those skilled in the art.

  In the embodiment shown in FIG. 10, the weight bar 90 is movably fixed to the heel side 24 and the toe side 26 by a pin 100 or other movable element, and the weight bar 90 has a polygonal shape at one end. The pin 100 is fixed to the pin 100, and the pin 100 is rotated to any one of 1 ° to 359 ° to move most of the mass of the weight bar 90 to a different position in the body 20. The position of can be adjusted. Various weight bar 90 and pin 100 combinations are shown in FIGS. 11A-F and include one or more cross-sectional shapes and / or high density portions or inserts 105. Once the desired GC position is obtained, the pin 100, and thus the weight bar 90, is temporarily secured in that position by mechanical fastening means and / or fastening means well known to those skilled in the art, such as removable adhesives. Alternatively, it is permanently fixed by welding, brazing and / or permanent adhesive or the like.

  In another embodiment shown in FIGS. 12-14, the weight bar 90 is secured to the sole 30 in only two places, one near the heel side 24 of the body 20 and the other one of the body 20. This is in the vicinity of the toeside 26, so that most of the sole 30 is effectively straddled. In this embodiment and the embodiment shown in FIGS. 9-10, the weight bar 90 is shown in the triangular weight bar 90 shown in FIG. 10, the quadrilateral weight bar 90 shown in FIG. 14, and the weight bar 90 shown in FIG. The trapezoidal weight bar 90 can have various cross-sectional shapes. A portion of the weight bar 90 can be made of a different material, and the golf club head 10 can be customized and the position of the CG adjusted.

  As shown in the above figures, the face element 60 of the present invention can take various shapes and configurations, thereby maximizing the striking area of the striking face 62, such as fairway wood, iron, hybrid, etc. Return can be optimized in small volume golf clubs and performance such as characteristic time (CT) and coefficient of restitution (COR) can be increased. In particular, the face element 60 includes a return portion 64 that surrounds all or most of the striking surface 62 to form a face cup, or the return portion 64 is from only a portion of the striking face 62, eg, toe, heel, crown And / or can extend from the sole edges 61, 63, 65, 67 of the striking face 62. For example, the face element 60 shown in FIGS. 1, 4, 6, 8, and 12 has a return portion 64 extending from the toe, crown, and hitting face sole edges 61, 65, 67, but extending from the heel edge 63. There is no partial face cup. In the embodiment shown in FIG. 24, the face element 60 includes only the striking face 62 without the return portion 64.

  As shown in FIGS. 15 and 16, in another embodiment, the face element 60 has a return portion 64 that extends from the crown side of the striking face 62 and does not extend from the other portion. It is made into a shape. In this way, the weld seam 70 is separated from the crown joint 110 of the striking face and left at the sole, toe and heel joints of the striking face 62, thereby maintaining a high COR and CT at the crown joint. Reduce stress. The weld seam 70 can be non-planar.

  In other embodiments, the golf club head 10 can include additional weight structures. For example, the embodiment shown in FIGS. 17-22 has a weight bar 90 extending from the heel side 24 of the toe 30 to the toe side 26 of the sole 30 and a return portion 64 extending from the crown, sole, and toe edges 65, 67, 61. It includes an internal weight band 120 that extends along most of the joint between the face element 60 and the sole 30 and crown 40 inside the cavity 22 of the golf club head 10. This structure allows the golf club to have the desired mass and thin sole 30 and crown 40, thereby increasing the strike face 62 and optimum CG alignment.

  For each embodiment of the weight bar 90 shown here, as shown in FIGS. 23A and 23B, the weight bar 90 can be supported by one or more pins 92, which are the golf clubs. Fixed to the sole 30 in the cavity 22 of the head 10, connected to the bottom surface of the weight bar 90 and / or connected to the back surface (not shown) of the weight bar 90. These pins are preferably strong and lightweight separate members such as plastics and composites, so that their presence does not adversely affect the mass form formed by the weight bar 90, although depending on the embodiment May be formed integrally with the sole 30 and the weight bar 90.

  For all of the embodiments shown herein, the face element 60 is preferably formed of a high strength and high performance material so as to minimize the adverse effects of performance on the weld location. The face element 60 preferably includes all points at which the striking face 62 has a maximum CT of 235-260 at its geometric center, approximately 0.25 inches away from the geometric center, and the striking face 62 It has a CT of 205-260 at least at the high center point and the low center point.

  Each of the embodiments of the weight lip 80 and weight bar 90 described above is a four piece, multi-material golf club head structure 200 shown in FIG. 24 to provide better structural mass properties and performance characteristics such as CT and COR. Can be incorporated into.

  This structure can be used for wood type and hybrid type golf club heads. In one embodiment of this golf club head 200, the golf club head 200 includes a body 220 formed of a low density material that is castable and weldable steel, which includes a crown opening 222 and a sole opening 224. And a face opening 226. The sole 230 is made of a steel material or a material denser than steel, and is welded or brazed to the body 220 to close the sole opening 224. A lightweight crown 240 made of low density carbon or thin, tough lightweight material is secured to the body 220 to close the crown opening 222 and a face plate 260 made of high strength material is welded or brazed to the body 220 to face opening 226. Close. This multi-material embodiment contributes to optimization of the position of the center of gravity, and is particularly useful for fairway wood. The face opening 226 and the face plate 260 preferably include an optimal joining position to minimize interference between the striking surface and the flexible region of the body 220.

  In another embodiment, the golf club head 200 shown in FIG. 24 has a material composition that contributes to optimizing the value of moment of inertia and is particularly useful for fairway wood. In this embodiment, the body 220 is made of a material that is denser than steel, which is a material that can be cast and welded, and the sole 230 is a material that can be welded or brazed to the body 220 with steel or a denser material. The crown 240 is a low density carbon material that is bonded to the body 220 by adhesive bonding, and the face plate 260 is welded or brazed to the body with a high strength material.

  The weight bar 90 of the embodiment shown here can also be used in an iron type golf club head as shown in FIGS. 25-28. In this embodiment of the invention, the iron type golf club head 300 has a body 305 having a top line 310, a sole 320, a toe side 330, a heel side 340 and a rear cavity 380, a face element 350, and a weight bar 360. . The weight bar 360 straddles the sole 320 and forms a narrow slot 370 between the weight bar 360 and the sole 320 to provide a void for the face element 350 to distort downward when the golf club head 300 contacts the ball. ing. One or more pins 92 illustrated in FIGS. 23A and 23B can be placed in a slot between the weight bar 360 and the sole 320 to additionally support the weight bar 360. In an alternative embodiment, the weight bar 360 can be rotatable within the rear cavity 380, as described in other embodiments, and the golf club head 300 can be made of different types of steel such as It can be formed of a plurality of materials. The weight bar 360 can be formed of a plurality of materials to affect the mass characteristics of the golf club head 300 and includes various shapes of cross-sectional shapes, including those described in other embodiments of the invention. Can have.

  In one embodiment, face element 350 is a face insert, and in other embodiments, face element 350 can be a face plate or a face cup. As shown in FIGS. 25-28, face element 350 (and other face elements already described) preferably has a striking surface with a pattern of varying thickness, which pattern is generally referred to herein. Are described in U.S. Pat. Nos. 7,137,907, 7,101,289, 7,258,626, 7,422,528, 7,448,960, 8012041, and 8,376,766, and U.S. Patent Application No. 2012021849, which is hereby incorporated by reference in its entirety.

  Similarly, the weight lip 80 structure described in connection with wood and hybrid type golf club heads can be used in iron golf club heads as shown in the preferred embodiment shown in FIGS. 29-32. In a preferred embodiment, the iron golf club head 400 has a body 410 and a face cup 420 that is welded together to form a weld seam 430, preferably having a constant thickness.

  The body 410, preferably cast in one piece of steel material, extends completely through the top line 411, the sole 412, the toe end 414, the heel end 415, the rear wall 416 and the body 410, thus opening an opening in the back. It has a front opening 418 having a weight lip 440. The weight lips 440 are preferably cast integrally with the body 410, but in alternative embodiments, each may be manufactured separately and secured to the body 410. The weight lip 440 in the preferred embodiment extends from the sole 412 and rear wall 416 of the body 410 toward the front opening 418 and from the heel end 415 of the body 410 toward the toe end 414. In some embodiments, the weight lip 440 contacts both the toe end 414 and the heel end 415, but the weight lip 440 is adjacent to the hosel 413 in the vicinity of the hosel 413, as in the preferred embodiment shown in FIG. Only touching.

As shown in FIG. 32, the face cup 420, the striking face 422, an upper flange 424 and lower flange 426, the length _{L 1} of the lower flange 426 is longer than the upper flange length _{L 2.} The length _{L 1} is preferably, 5 to 10 mm, preferably in the range of 6～9Mm. The lower flange 426 preferably has a varying thickness to enhance the performance of the golf club head 400. The face cup 420 also has a toe side flange 428 as shown in FIG. 30 but not along the heel side. Here, the face cup 420 is in the vicinity of the hosel 413 and the heel of the body 410. Welded directly to end 415.

  As in the embodiment of FIG. 3, when at least a portion of the weight lip 440 extends through the front opening 418 and the body 410 is assembled with the face cup 420, the weight lip 440 extends beyond the weld seam 430 and the striking face 422 The state is approached without contacting the back surface 423. The weight lip 440 in the preferred embodiment has a top surface 442 that is generally orthogonal to the front side 444, but in another embodiment of the iron-type golf club head of the present invention shown in FIGS. Has a different size and structure. In the embodiment shown in FIGS. 35-37, the back opening of the body 410 is closed by a back cap 450 to form a hollow iron type golf club head 400. The back cap 450 may be formed of the same material as the body 410 and / or the face cup 420, or may be formed of plastic or composite material.

  In another embodiment shown in FIG. 38, a separate lightweight material 460 such as plastic, composite or rubber is added to the front side 444 of the weight lip 440 so that the weight lip 440 is applied to the striking face 422 ( (Or other part of the face cup 420). This feature helps to soften the sound of the golf club head 400 during use. In this embodiment, the lightweight material 460 is preferably positioned to be approximately 0.075 inches vertically from the lower flange 426 and at least 0.5 inches away from the center of the back of the striking face 422. Is done.

  In each of the embodiments described above, the inertia of the weight lips 80 and 440 or the weight bars 90 and 360 while the golf club head 10 impacts the ball increases the bending ability of the thin region of the sole 30, thereby Increases trackability. The weight structure shown in these drawings also allows the face element 60 to have a face cup structure (a return portion 64 that surrounds all or part of the perimeter of the striking face 62) without sacrificing the optimum center of gravity. And allows the manufacture of the golf club head 10 such that the weight is reduced from the sole 30, thus making it thinner and the sole easily flexes to enhance the performance of the face element 60.

  From the above description, those skilled in the art will appreciate the many advantages of the present invention and, while the invention is described in the preferred embodiment, other embodiments, many variations with reference to the drawings. It is readily apparent that modifications, equivalents, and equivalent replacements may be made without departing from the spirit and scope of the invention, which is not limited by the foregoing description, except as stated in the appended claims. You will understand.

10, 200, 300, 400 Head 20, 220, 410 Body 60, 350, Face element 80, 440, Weight lip 90, 360 Weight bar

From the above description, those skilled in the art will appreciate the many advantages of the present invention and, while the invention is described in the preferred embodiment, other embodiments, many variations with reference to the drawings. It is readily apparent that modifications, equivalents, and equivalent replacements may be made without departing from the spirit and scope of the invention, which is not limited by the foregoing description, except as stated in the appended claims. You will understand.
Note that the present invention includes the following aspects.

[1]
A top line, a sole, a heel side, a toe side, a body having a front opening and a ridge,
A face element having a striking face covering the front opening;
An iron type golf club head having
The protrusion is located near the front opening and extends toward the face element so as not to contact the striking face;
The ridge extends from the heel side toward the toe side and does not have any hollow area.
Iron type golf club head.
[2]
The iron-type golf club head according to [1], wherein the protrusion extends beyond the front opening.
[3]
The iron type golf club head according to [1], wherein the face element is a face cup having an upper flange and a lower flange, and each of the upper flange and the lower flange extends rearward from the striking face.
[4]
The iron type golf club head according to [3], wherein the upper flange has a first length, the lower flange has a second length, and the first length is smaller than the second length. .
[5]
The iron type golf club head according to [4], wherein the second length is in a range of 5 mm to 10 mm.
[6]
The iron type golf club head according to [3], wherein the face element is welded to the body by forming a weld line, and the protrusion extends beyond the weld line.
[7]
The iron type golf club head according to [1], wherein the front opening completely penetrates the body such that the body has a back opening.
[8]
The iron type golf club head according to [7], further including a back cap, wherein the back cap covers the back opening.
[9]
The iron-type golf club head according to [1], wherein the protrusion has an upper surface and a front side surface, and the upper surface is disposed substantially orthogonal to the front side surface.
[10]
The iron type golf club head according to [3], wherein the lower flange has a thickness that varies.
[11]
The iron-type golf club head according to [1], wherein the protrusion is integrally formed with the body.
[12]
A face cup having a striking face, an upper flange, and a lower flange;
An iron-type golf club head having a body having a top line, a sole, a heel side, a toe side, a front opening, and a ridge,
The front opening completely penetrates the body such that the body has a back opening;
The upper flange has a first length;
The lower flange has a second length longer than the first length;
The striking face has a thickness that varies in thickness,
The protrusion is located in the vicinity of the front opening and extends toward the face element beyond the front opening without contacting any part of the face cup.
Iron type golf club head.
[13]
The iron type golf club head according to [12], wherein the protruding portion straddles at least a part of the sole.
[14]
The iron-type golf club head according to [13], further including a plurality of pins, wherein each of the plurality of pins is disposed between the sole and the protruding portion.
[15]
The iron type golf club head according to [12], wherein the protrusion is formed of a plurality of materials.
[16]
The iron type golf club head according to [15], wherein at least one of the plurality of materials is a tungsten alloy.
[17]
The iron type golf club head according to [12], wherein the face cup is welded to the body on which a weld seam is formed.
[18]
The iron type golf club head according to [17], wherein the weld seam has a constant thickness.
[19]
The iron type golf club head according to [12], further comprising a back cap, the back cap being fixed to the body and covering the back opening.
[20]
The protrusion has an upper weight portion and a lower support portion, and the upper weight portion is made of a first material having a first density, and the lower support portion is a second material having a second density. The iron-type golf club head according to [12], wherein the first density is greater than the second density.

Claims (20)

A top line, a sole, a heel side, a toe side, a body having a front opening and a ridge,
A face element having a striking face covering the front opening;
An iron type golf club head having
The protrusion is located near the front opening and extends toward the face element so as not to contact the striking face;
The ridge extends from the heel side toward the toe side and does not have any hollow area.
Iron type golf club head.   The iron-type golf club head according to claim 1, wherein the protruding portion extends beyond the front opening. .   2. The iron type golf club head according to claim 1, wherein the face element is a face cup having an upper flange and a lower flange, and each of the upper flange and the lower flange extends rearward from the striking face.   The iron-type golf club head of claim 3, wherein the upper flange has a first length, the lower flange has a second length, and the first length is less than the second length. .   The iron type golf club head according to claim 4, wherein the second length is in a range of 5 mm to 10 mm.   4. The iron type golf club head according to claim 3, wherein the face element is welded to the body by forming a weld line, and the protruding portion extends beyond the weld line.   The iron-type golf club head according to claim 1, wherein the front opening completely penetrates the body such that the body has a back opening.   The iron type golf club head according to claim 7, further comprising a back cap, wherein the back cap covers the back opening.   The iron-type golf club head according to claim 1, wherein the protrusion has an upper surface and a front side surface, and the upper surface is disposed substantially orthogonal to the front side surface.   4. The iron type golf club head according to claim 3, wherein the lower flange has a thickness that varies in thickness.   The iron-type golf club head according to claim 1, wherein the projecting portion is integrally molded with the body. A face cup having a striking face, an upper flange, and a lower flange;
An iron-type golf club head having a body having a top line, a sole, a heel side, a toe side, a front opening, and a ridge,
The front opening completely penetrates the body such that the body has a back opening;
The upper flange has a first length;
The lower flange has a second length longer than the first length;
The striking face has a thickness that varies in thickness,
The protrusion is located in the vicinity of the front opening and extends toward the face element beyond the front opening without contacting any part of the face cup.
Iron type golf club head.   The iron-type golf club head according to claim 12, wherein the protruding portion extends over at least a part of the sole.   The iron-type golf club head according to claim 13, further comprising a plurality of pins, wherein each of the plurality of pins is disposed between the sole and the protruding portion.   The iron-type golf club head according to claim 12, wherein the protrusion is formed of a plurality of materials.   The iron-type golf club head according to claim 15, wherein at least one of the plurality of materials is a tungsten alloy.   The iron type golf club head according to claim 12, wherein the face cup is welded to the body formed with a weld seam.   The iron-type golf club head according to claim 17, wherein the weld seam has a constant thickness.   The iron-type golf club head according to claim 12, further comprising a back cap, wherein the back cap is fixed to the body and covers the back opening.   The protrusion has an upper weight portion and a lower support portion, and the upper weight portion is made of a first material having a first density, and the lower support portion is a second material having a second density. The iron type golf club head of claim 12, wherein the first density is greater than the second density.

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