JP6908752B2 - Golf club heads with optimized characteristics and related methods - Google Patents

Description

Cross-reference to related applications This application is filed at the United States Patent and Trademark Office on March 14, 2013, US Patent Application No. 13 / 804,859;
U.S. Patent Application No. 13 / 804,917 filed at the United States Patent and Trademark Office on March 14, 2013;
This is an international patent application claiming the advantages of US Patent Application No. 13 / 286,111, filed at the United States Patent and Trademark Office on March 14, 2013.
The above disclosure is incorporated herein by reference as forming a part of the present specification.

The present disclosure relates to sporting goods as a whole, and more specifically to golf club heads with optimized properties and related methods.

Golf club heads often have a variety of features that can be designed or set to improve one or more performance characteristics of the golf club head. However, since these various features often interact in essence, adjusting or setting one feature can essentially change another, which is often disadvantageous. As an example, widening the striking face of a golf club to increase the impact area can unfavorably change the position of the center of gravity of the golf club, grasping the interaction between various features and determining each feature. If not set or designed in a well-balanced manner, unintended performance may result.

Based on the above, further progress will be made regarding the characteristics of golf clubs, and the performance of golf clubs will be improved by balancing these characteristics with respect to each other.

The present disclosure may be further understood by reading the following detailed description of the examples of each embodiment, along with the accompanying drawings. For the sake of simplicity and clarity, each drawing shows a general aspect of the configuration, and description and details of well-known features and techniques are omitted to avoid unnecessarily obscuring the present disclosure. May be done. Moreover, each element of the drawing is not necessarily drawn to scale. For example, some of the elements of the drawings may be exaggerated in dimensions as compared to the other elements in order to make the embodiments of the present disclosure easier to understand.
The same reference number in different drawings represents the same element. In the present specification and claims, terms such as "first", "second", "third", and "fourth" are used as appropriate to distinguish between similar elements. It is, and is not necessarily used to describe a particular order or chronological order. As the terms so used are interchangeable under appropriate circumstances, the embodiments described herein may be implemented, for example, in a different order than those described or illustrated herein. Should be understood. Moreover, because "including" and "having" and all modifications thereof are intended to include non-exclusive inclusion, a process, method, system, article, device or device containing the listed elements is not necessarily. It is not limited to these elements and may include other elements that are not explicitly listed or that are inherent in such processes, methods, systems, articles, equipment or devices. ..
In the present specification and claims, terms such as "left", "right", "front", "rear", "top", "bottom", "top", and "bottom" are described as appropriate. It is used for, not necessarily to explain a permanent relative position. As the terms so used are interchangeable under appropriate circumstances, embodiments of devices, methods and / or products described herein are described or illustrated herein, for example. It should be understood that it can be implemented in a different direction.
Terms such as "connect", "connect", "connect", and "connect" should be broadly interpreted to mean that two or more elements are mechanically or otherwise combined. Point to. The concatenation (mechanically or otherwise) may be for any period of time, for example permanent or semi-permanent, or momentary only.
Even if there is no term such as "detachable" or "detachable" near a term such as "connected", it does not mean whether or not the connection or the like is detachable.
As defined herein, two or more elements are "integral" when they are composed of the same piece of material. As defined herein, two or more elements are "non-integrated" when each is composed of different pieces of material.
A front view of the golf club head according to the present disclosure is shown. A side sectional view of the golf club head along the line II-II of FIG. 1 is shown. The bottom view of the golf club head of FIGS. 1 and 2 is shown. It is a figure which shows the flowchart of the method which can be used for providing, forming and / or manufacturing the golf club head which concerns on this disclosure.

In one example, the golf club head may include a head body that includes a head interior and a hosel structure. The inside of the head can be bounded by the front part of the head, the rear part of the head, the head heel part, the head toe part, the upper part of the head, and the head sole part. The hosel structure can have an inner diameter portion for receiving the golf club shaft, in which the inner diameter portion can have a hosel shaft. The golf club head extends from the head heel portion to the head toe portion through the head center of gravity and the head center of gravity, and when the golf club head is in the address position with respect to the ground, the head horizontal axis parallel to the ground and the hosel moment of inertia around the hosel axis. It can also have a moment and a horizontal moment of inertia about the horizontal axis of the head. The horizontal moment of inertia can be 39% or more of the hosel moment of inertia.

In one example, the golf club head may include a head body that includes a head interior and a hosel structure. The inside of the head can be bounded by the front part of the head, the rear part of the head, the head heel part, the head toe part, the upper part of the head, and the head sole part. The hosel structure can have an inner diameter portion for receiving the golf club shaft, in which the inner diameter portion can have a hosel shaft. The golf club head is a head vertical axis extending from the head upper portion to the head sole portion through the head center of gravity and the head center of gravity, and when the golf club head is in the address position with respect to the ground, the head vertical axis perpendicular to the ground. It can also have a hosel moment of inertia about the hosel axis and a vertical moment of inertia around the head vertical axis. The horizontal moment of inertia can be 59% or more of the hosel moment of inertia.

In one embodiment, the method of providing a golf club head can include providing a head body that includes a head interior and a hosel structure. The inside of the head can be bounded by the front part of the head, the rear part of the head, the head heel part, the head toe part, the upper part of the head, and the head sole part. The hosel structure can have an inner diameter portion for receiving the golf club shaft, in which the inner diameter portion can have a hosel shaft. The method can also include connecting the shaft of the golf club to the hosel structure. The horizontal axis of the head extends from the head heel portion to the head toe portion through the center of gravity of the head of the golf club head, and can be parallel to the ground when the golf club head is in the address position with respect to the ground. The vertical axis of the head extends from the upper part of the head to the head sole portion through the center of gravity of the head, and can be perpendicular to the ground when the golf club head is in the address position with respect to the ground. In addition, the head body is provided by (a) setting the horizontal moment of inertia around the head horizontal axis to be 39% or more of the hosel moment of inertia around the hosel axis, or (b) around the head vertical axis. Can include at least one of setting the vertical moment of inertia of to be 59% or more of the hosel moment of inertia about the hosel axis.

In one example, the golf club head can include a head body including a head front, a head rear, a head heel, a head toe, a head sole, a head top and a hosel structure. The hosel structure has an inner diameter portion for receiving a shaft of a golf club, and in this structure, the inner diameter portion can have a hosel shaft. The golf club head is located at the front of the head and has a striking face having a striking face center point, a head capacity measured in cubic centimeter (cc), and a head capacity having a size larger than 420, and a center of gravity of the head. And can also provide optimization characteristics. When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and is orthogonal to the head vertical axis. ing. The loft surface of the golf club head can be in contact with the center point of the striking face. The front surface of the golf club head can extend parallel to the hosel axis through the center point of the striking face. The head depth plane can extend through the center point of the striking face, parallel to the head horizontal axis and perpendicular to the loft plane. The center of gravity (CG) height axis extends through the center of gravity of the head and can intersect perpendicular to the head depth plane at the first intersection. The head CG height of the head center of gravity can be measured between the head center of gravity and the first intersection along the axis of the CG height. The head CG depth of the center of gravity of the head is parallel to the ground between (a) the second intersection located at the intersection of the front surface and the ground and (b) the third intersection located at the intersection of the vertical axis of the head and the ground. Moreover, it can be measured perpendicular to the front surface. The optimization characteristics can be determined by adding (a) the magnitude of the head capacitance to (b) the ratio of the head CG depth divided by the absolute value of the head CG height. This optimization characteristic can be 425 or more.

In one example, the golf club head can include a head body including a head front, a head rear, a head heel, a head toe, a head sole, a head top and a hosel structure. The hosel structure has an inner diameter portion for receiving a shaft of a golf club, and in this structure, the inner diameter portion can have a hosel shaft. The golf club head is located at the front portion of the head and may also include a striking face having a striking face center point and a center of gravity of the head. When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and is orthogonal to the head vertical axis. ing. The loft surface of the golf club head can be in contact with the center point of the striking face. The front surface of the golf club head can extend parallel to the hosel axis through the center point of the striking face. The head depth plane can extend through the center point of the striking face, parallel to the head horizontal axis and perpendicular to the loft plane. The CG height axis can extend through the center of gravity of the head and can intersect perpendicular to the head depth plane at the first intersection. The head CG height of the head center of gravity can be measured between the head center of gravity and the first intersection along the axis of the CG height. The head CG depth of the center of gravity of the head is parallel to the ground between (a) the second intersection located at the intersection of the front surface and the ground and (b) the third intersection located at the intersection of the vertical axis of the head and the ground. Moreover, it can be measured perpendicular to the front surface. The absolute value of the head CG height can be 2.54 mm or less. The head CG depth can be 40.64 mm or more.

In one embodiment, the method of providing a golf club head can include providing a head body that includes a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a hosel structure. .. The hosel structure has an inner diameter portion for receiving a shaft of a golf club, and this inner diameter portion has a hosel shaft. The method can also include connecting the striking face to the front of the head and setting the optimization characteristics of the golf club head. The striking face has a striking face center point. The head capacity of a golf club head can be measured in cubic centimeters (cc) and its size can be greater than 420. When the golf club head is in the address position with respect to the ground, the head vertical axis can extend through the center of gravity of the head and be perpendicular to the ground. The head horizontal axis can extend through the head center of gravity and be orthogonal to the head vertical axis. The loft surface of the golf club head can be in contact with the center point of the striking face. The front surface of the golf club head can extend parallel to the hosel axis through the center point of the striking face. The head depth plane can extend through the center point of the striking face, parallel to the head horizontal axis and perpendicular to the loft plane. The CG height axis can extend through the center of gravity of the head and can intersect perpendicular to the head depth plane at the first intersection. The head CG height of the head center of gravity can be measured between the head center of gravity and the first intersection along the axis of the CG height. The head CG depth of the center of gravity of the head is parallel to the ground between (a) the second intersection located at the intersection of the front surface and the ground and (b) the third intersection located at the intersection of the vertical axis of the head and the ground. Moreover, it can be measured perpendicular to the front surface. The optimization characteristics can be set by adding (a) the magnitude of the head capacitance to (b) the ratio of the head CG depth divided by the absolute value of the head CG height, where the above optimization The characteristic can be 425 or more.

In one example, the golf club head can include a head body, a face portion and a center of gravity of the head, and at least one of a first performance characteristic or a second performance characteristic. The head body can include a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a hosel structure. This hosel structure has an inner diameter portion for receiving a shaft of a golf club, and this inner diameter portion has a hosel shaft. The face portion can be present at the front portion of the head and can have a face height limited by the striking face center point, the striking face edge portion, and the striking face edge portion. When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and is orthogonal to the head vertical axis. ing. The loft surface of the golf club head can be in contact with the center point of the striking face. The front surface of the golf club head can extend parallel to the hosel axis through the center point of the striking face. The head depth plane can extend through the center point of the striking face, parallel to the head horizontal axis and perpendicular to the loft plane. The CG height axis can extend through the center of gravity of the head and can intersect perpendicular to the head depth plane at the first intersection. The head CG height of the head center of gravity can be measured between the head center of gravity and the first intersection along the axis of the CG height. The head CG depth of the center of gravity of the head is parallel to the ground between (a) the second intersection located at the intersection of the front surface and the ground and (b) the third intersection located at the intersection of the vertical axis of the head and the ground. Moreover, it can be measured perpendicular to the front surface. The face height can be measured in parallel with the loft surface and can be about 33 mm to about 71 mm. The first performance characteristic can have a head CG height of about 5.08 mm or less. The second performance characteristic can have a CG performance ratio of 0.56 or less, which is determined by (a) subtracting the face height from 76.2 mm and (b) dividing by the head CG depth.

In one example, the golf club head may include a head body, a face portion, and a head center of gravity. The head body can include a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a hosel structure. This hosel structure has an inner diameter portion for receiving a shaft of a golf club, and this inner diameter portion has a hosel shaft. The face portion can be connected to the front portion of the head, and can include a striking face having a striking face center point, a striking face edge portion, and a face height. When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and is orthogonal to the head vertical axis. ing. The loft surface of the golf club head can be in contact with the center point of the striking face. The front surface of the golf club head can extend parallel to the hosel axis through the center point of the striking face. The head depth plane can extend through the center point of the striking face, parallel to the head horizontal axis and perpendicular to the loft plane. The CG height axis can extend through the center of gravity of the head and can intersect perpendicular to the head depth plane at the first intersection. The head CG height of the head center of gravity can be measured between the head center of gravity and the first intersection along the axis of the CG height. The head CG depth of the center of gravity of the head is parallel to the ground between (a) the second intersection located at the intersection of the front surface and the ground and (b) the third intersection located at the intersection of the vertical axis of the head and the ground. Moreover, it can be measured perpendicular to the front surface. The face height is determined by the striking face edge portion, and can be measured in parallel with the loft surface to be about 33 mm to about 71 mm. The CG performance ratio of (a) 76.2 mm minus the face height and (b) the head CG depth is 0.56 or less. The head body can be composed of a driver type body. The head capacity of the golf club head can be about 420 cc to about 470 cc. The head weight of the golf club head can be from about 185 grams to about 225 grams. The height of the head CG can be about 0 mm to about 3.18 mm. The head CG depth can be about 25 mm to about 102 mm. The head body may include a weight structure arranged near the sole portion and the rear portion of the head body.

In one embodiment, the method of providing a golf club head may include providing a head body including a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a hosel structure. can. This hosel structure has an inner diameter portion for receiving a shaft of a golf club, and this inner diameter portion has a hosel shaft. The method can also include connecting the face portion to the front portion of the head, wherein the face portion has a striking face center point, a striking face edge portion, and a striking face height limited by the striking face edge portion. It has a face. The method further comprises setting at least one of the first performance characteristic of the golf club head or the second performance characteristic of the golf club head. When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity of the golf club head and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and is head vertical. It is orthogonal to the axis. The loft surface of the golf club head can be in contact with the center point of the striking face. The front surface of the golf club head can extend parallel to the hosel axis through the center point of the striking face. The head depth plane can extend through the center point of the striking face, parallel to the head horizontal axis and perpendicular to the loft plane. The CG height axis can extend through the center of gravity of the head and can intersect perpendicular to the head depth plane at the first intersection. The head CG height of the head center of gravity can be measured between the head center of gravity and the first intersection along the axis of the CG height. The head CG depth of the center of gravity of the head is parallel to the ground between (a) the second intersection located at the intersection of the front surface and the ground and (b) the third intersection located at the intersection of the vertical axis of the head and the ground. Moreover, it can be measured perpendicular to the front surface. The face height can be measured in parallel with the loft surface and can be about 33 mm to about 71 mm. The first performance characteristic can have a head CG height of about 5.08 mm or less. The second performance characteristic can have a CG performance ratio of 0.56 or less, which is determined by (a) subtracting the face height from 76.2 mm and (b) dividing by the head CG depth.

Other examples and embodiments are further disclosed herein. Such examples and embodiments can be found in the drawings, claims and / or this description.

Looking at the drawings, FIG. 1 shows a front view of the golf club head 1000, which includes a head body 1100 and a face portion 1200. The face portion 1200 includes a striking face 1210. FIG. 2 shows a side sectional view of the golf club head 1000 along the line II-II of FIG. FIG. 3 shows a bottom view of the golf club head 1000 of the golf club head 1000. FIGS. 1 to 3 show the golf club head 1000 at the address position with respect to the ground 1010. In these figures, the hosel shaft 1710 has an angle of 60 degrees with respect to the ground 1010 with respect to the front view (FIG. 1) of the golf club head 1000, and the hosel with respect to the side view (FIG. 2) of the golf club head 1000. Axis 1710 is substantially perpendicular to the ground 1010.

In the present embodiment, the head body 1100 and the face portion 1200 are made of different material pieces joined by, for example, a welding method. However, in another example, the face portion 1200 is one or more of the head body 1100 such as the head front portion 1110, the head upper portion 1120, the head sole portion 1130, the head heel portion 1140, the head toe portion 1150 and / or the head rear portion 2160. Each part may be composed of a single piece of material. The head front surface 1160 of the golf club head 1000 includes at least a part of a striking face 1210, a face portion 1200, and a head front portion 1110. In some embodiments, the head front surface 1160 may also include at least a portion of the head sole portion 1130. In the same or different embodiments, the head front portion 1110 may include a striking face 1210 and / or a face portion 1200.

The face portion 1200 includes a striking face 1210 having a striking face center point 1211, a striking face edge portion 1212, and a face height 1213. The striking face center point 1211 is arranged at the geometric center of the striking face edge portion 1212 of this example, and is arranged at the midpoint of the face height 1213. In the same or other example, the striking face center point 1211 can be centered relative to the designed impact region 1250, which can be defined by the extent of the groove 1259 of the striking face 1210. can. Alternatively, the batting face center point 1211 can be placed according to the regulations of a golf management body such as the United States Golf Association (USGA). For example, the striking face center point 1211 is a procedure for measuring the flexibility of a golf club head by the USGA (“Flexibility Procedure”) (USGA-TPX3004, Rev. 1.0.0, May 1, 2008). (Available in http: //www.usga.org/equipment/testing/protocols/Procedure-For-Measuring-The-Flexibility-Of-A-Golf-Club-Head /) can.

The golf club head 1000 includes a loft surface 2270 (FIG. 2), which surface is at least in contact with the striking face center point 1211 of the striking face 1210. The face height 1213 can be measured parallel to the loft surface 2270 between the striking face upper end 1215 and the striking face lower end 1216 of the striking face edge 1212, from about 33 mm (mm) in this example or another example. It can be about 71 mm.

The striking face edge portion 1212 includes a striking face upper end 1215 and a striking face lower end 1216 that define the face height 1213, but it is not necessary to demarcate the entire face portion 1200. For example, as can be seen from FIG. 1, the striking face 1210 is bounded by the striking face edge 1212, but is only part of the face 1200. In some examples, the striking face 1210 can have a roll radius and / or a bulge radius. The striking face edge portion 1212 can be defined along a transition boundary where the contour of the striking face portion 1200 is away from the roll radius and / or bulge radius of the striking face 1210. For example, FIG. 2 includes a magnified view of a portion of the upper transition boundary of the golf club head 1000, emphasizing the vertical roll radius 2170 extending along the striking face 1210 and having the head front surface 1160 roll vertically. It shows how the upper end 1215 of the striking face is located at the upper transition boundary, which is a portion away from the radius 2170. FIG. 2 also includes a magnified view of a portion of the lower transition boundary of the golf club head 1000, emphasizing the vertical roll radius 2170 extending vertically along the striking face 1210 and having the head front surface 1160 roll vertically. It shows how the lower end 1216 of the striking face is located at the lower transition boundary, which is a portion away from the radius 2170.

In the same or other embodiments, the striking face edge 1212 can be defined with respect to the end of the striking plate that includes the striking face. For example, the face portion 1200 includes a striking plate 1220, in which case the striking face 1210 forms the appearance surface of the striking plate 1220, and the striking plate 1220 is attached to the head front portion 1110 along the striking plate end portion 1221. It is joined. In this example, the striking plate end 1221 defines at least a portion of the striking face edge 1212. The portions thus defined include the upper and lower portions of the striking face edge portion 1212, in which the striking face upper end 1215 and the striking face lower end 1216 are respectively located to provide a face height of 1213. Define. Other examples are possible, in which case the striking plate end of the striking plate can define most or all of the striking face edge of the striking face.

As shown in FIG. 2, the golf club head 1000 also includes a head center of gravity (CG) 2500, a head depth surface 2310, and a CG height shaft 2320. In the figure, the head depth surface 2310 extends through the striking face center point 1211 and is orthogonal to the loft surface 2270, and the CG height axis 2320 extends through the head center of gravity 2500 and at the intersection 2801. It intersects 2310 perpendicularly.

The head center of gravity 2500 has a CG height 2520 and a CG depth 2510, whereby the head center of gravity 2500 is positioned with respect to the golf club head 1000. In this example, the CG height 2520 can be measured between the head center of gravity 2500 and the intersection 2801 along the axis 2320 of the CG height. The CG depth 2510 can be measured parallel to the ground 1010 and between intersections 2802 and 2803, as can be seen from FIG. In this example, the intersection 2802 is defined by the intersection of the ground 1010 and the front surface 2280, where the front surface 2280 extends through the striking face center point 1211 and is parallel to the hosel axis 1710, and further, the golf club. When the head 1000 is in the address position, it is perpendicular to the ground 1010. In addition, the intersection 2803 is defined by the intersection of the ground 1010 and the head vertical axis 1610, where the head vertical axis 1610 extends through the head center of gravity 2500 and when the golf club head 1000 is in the address position. Is perpendicular to the ground 1010. The head center of gravity 2500 can also be positioned relative to the ground 1010, in which case the head CG vertical distance 2530 of the head center of gravity 2500 is measured between the weight center 2750 and the ground 1010 along the head vertical axis 1610. Can be done.

The head body 1100 of the golf club head 1000 also includes a hosel structure 1217 (FIG. 1) and a hosel shaft 1710 extending along the center of the inner diameter portion 1217 of the hosel structure. In this example, the hosel connecting mechanism of the golf club head 1000 includes a hosel structure 1217 and a shaft sleeve 1411, which allows the shaft sleeve 1411 to be connected to the end of the golf shaft 1410. The shaft sleeve 1411 can be connected to the hosel structure 1217 in a plurality of configurations. Thereby, the golf shaft 1410 can be fixed to the hosel structure 1217 at a plurality of angles with respect to the hosel shaft 1710. However, other examples are possible, in which case the shaft 1410 can be non-adjustably fixed to the hosel structure 1217.

The golf club head according to the present disclosure can be configured to exhibit one or more optimization characteristics that optimize or balance its performance. For example, one characteristic of a golf club head that is sought to be optimized by the present design is a characteristic of face height and / or face size. Maximizing the face height and / or face size of the golf club head can provide several advantages. Such an advantage is that the impact area of the striking face with the object is expanded to obtain a more tolerant club head, and such a club head deviates from the center point of the striking face. Good results are also obtained for hit golf shots. In addition, the higher the height of the striking face and / or the larger its size, the more appropriately the energy can be transferred to the golf ball at the time of impact with the golf ball. Therefore, the characteristic time or "spring effect" of the golf club head is increased, and a longer distance golf shot can be realized. In some examples, to achieve a characteristic time limit set by the golf management organization, such as the characteristic time limit of 239 microseconds (μs) set by the USGA in the organization's own "Flexibility Procedure"). , The height or size of the striking face may be increased.

However, indiscriminately increasing the face height and / or face size adversely affects the performance of other areas (such as the launch angle of the golf ball at impact with the striking face, ball spin and / or ball speed). there is a possibility. For example, if the face height and / or face size is increased, the center of gravity moves forward, so that the CG depth between the center of gravity of the golf club head and the center point of the striking face may become shallow. As a result, the dynamic loft of the golf club head is reduced, so that the launch angle of the golf ball is reduced. In another example, increasing the face height and / or face size may increase the CG height between the center of gravity and the head depth plane, raising the center of gravity away from the sole of the golf club head. As a result, the gear effect between the striking face and the golf ball is suppressed, so that the golf club head is less likely to reduce the amount of backspin of the golf ball generated at impact, and therefore the ball is affected by this backspin. The flight distance is shortened.

Considering the above, the face height or face size of the golf club head needs to be balanced with respect to the position of the center of gravity. For the golf club head 1000, the impact area is increased and more energy is transferred to the golf ball 2900 by enlarging the striking face 1210 and increasing the face size and / or face height 1213. I have to. In particular, the golf club head 1000 is configured such that the face height 1213 can be about 33 mm to about 71 mm in order to have a larger impact region and more energy to be transferred at the time of impact with the golf ball 2900. It is possible. In some examples, the area of the striking face 1210 (including the increased face area) can be from about 23.6 square centimeters (cm ² ) to about 45.2 cm ² .

Despite increasing the face size and / or face height 1213 as described above, the golf club head 1000 still has a CG height 2520 rising towards the head top 1120 and / or a head depth surface. It limits you from being too far from 2310. For example, the golf club head 1000 has a first optimization characteristic that satisfies the following relationship 1.
｜ CG height ₂₅₂₀ ｜ ≦ 5.08mm [Relationship 1]

There is also an example in which the CG height 2520 can be set from about 0 mm to the limit value of 5.08 mm for relation 1. In another example, the CG height 2520 can be up to about 4.45 mm, 3.81 mm or 3.18 mm. In some embodiments, the first optimization property can reduce the backspin of the golf ball 2900 through a gear effect between the striking face 1210 and the golf ball 2900 for good performance. .. In FIG. 2, the center of gravity 2500 of the head is below the depth surface 2310, and the CG height 2520 is shown to extend between the depth surface 2310 and the head sole portion 1130. However, there is also an embodiment in which the head center of gravity 2500 can be above the depth surface 2310 so that the CG height 2520 extends between the depth surface 2310 and the head top 1120 while still satisfying the above relationship 1. It is possible.

In addition, in view of further increasing the face size and / or face height 1213 as described above, the golf club head 1000 still limits the center of gravity 2500 from moving towards the striking face 1212. The CG depth 2510 is prevented from becoming excessively shallow. For example, the golf club head 1000 has a second optimization characteristic that satisfies the following relationship 2.

Therefore, the relationship between the face height 1213 and the CG depth 2510 is balanced according to the relationship 2 so that the second optimization characteristic maintains 0.56 or less, whereby the CG depth 2510 is hit. It limits the amount that can be shallowed towards face 1210. An example is also possible in which the CG depth 2510 can be set to about 25 mm to about 102 mm. In the same or other examples, the CG depth 2510 can be at least about 39 mm. In some embodiments, the second optimization property can improve or optimize at least one of the dynamic loft of the golf club head 1000 or the launch angle of the golf ball 2900 at impact.

In some examples, the golf club head 1000 may be configured to have only one of the first or second optimization characteristics described above. For example, the golf club head 1000 has a first optimization characteristic, but may not have a second optimization characteristic, and thus satisfies the relation 1 without satisfying the relation 2. As another example, the golf club head 1000 has a second optimization characteristic, but may not have the first optimization characteristic, and thus satisfies the relation 2 without satisfying the relation 1. In addition, embodiments are also possible in which the golf club head 1000 satisfies both relations 1 and 2 and thus has first and second optimization characteristics.

The golf club head 1000 can also have a third optimization characteristic with respect to its head volume (HV) 2600. In this example, since the head body 1000 of the golf club head 1000 is composed of a driver type body having a head capacity of 420 cubic centimeters (cc) or more, the size of the head capacity is 420 or more. For example, since the head body 1000 can have a head capacity of 420 cc, the size of the head capacity is 420. As another example, the golf club head 1000 can have a head capacity of 460 cc, so that the size of the head capacity is 460. The golf club head 1000 can, in some embodiments, have a head capacity of up to about 470 cc and / or a total head weight of about 185 grams to about 225 grams. In some specific examples, the total head weight can be about 202 grams and / or the head capacity can be about 460 cc.

The third optimization characteristic can control the relationship between the position of the head capacitance 2600 and the position of the center of gravity 2500, and can be determined so as to satisfy the following relationship 3.

In some cases, the head capacity of 2600 can be increased to adjust, for example, the moment of inertia (MOI) of the golf club head 1000. However, an unlimited increase in head capacity can have unfavorable effects on other properties of the golf club head. For example, increasing the head capacitance 2600 towards the head front 1110, towards the head top 1120, towards other undesired directions and / or away from the desired center of gravity position or one or more directions. In addition, the center of gravity of the head 2500 may be moved, which hinders the performance of the golf club head 1000. These undesired changes in the position of the center of gravity can adversely affect one or more characteristics of the golf club head, such as launch speed, launch angle, gear effect, backspin and / or shot distance. Therefore, by setting a third optimization characteristic used to balance the relationship between the head capacitance 2600 and the position of the head center of gravity 2500, desirable and balanced attributes for the golf club head 1000 can be obtained. For example, the weight distribution of the golf club head 1000 can be configured to satisfy relationship 3 so that the golf club head 1000 can exhibit a third optimization characteristic, thereby providing a head capacity of 2600. It can be increased to increase the moment of inertia and transfer more energy to the golf ball 2900 at the golf impact of the striking face 1210 and the golf ball 2900. In the same or other embodiments, the weight distribution of the golf club head 1000 can be configured to limit the CG depth 2510 from becoming shallower towards the head front 1110 due to the increased head capacity 2600. Therefore, at the time of golf impact, at least one of the dynamic loft of the striking face 1210 and the launch angle of the golf ball 2900 is improved. In addition, the weight distribution of the golf club head 1000 can be configured to limit the CG height 2520 from rising towards the head top 1120 as a result of increasing the head capacity 2600. The backspin of the golf ball 2900 is reduced by the gear effect between the striking face 1210 and the golf ball 2900 at the time of golf impact.

In consideration of the above, in order to achieve the third optimization characteristic according to the relationship 3, the CG depth 2510 can be configured to be 40.64 mm or more. In the same or other embodiments, the absolute value of the CG height 2520 can be 2.54 mm or less. In some embodiments, the CG height 2520 is characterized as an absolute value, taking into account that the head center of gravity 2500 can be above or below the head depth surface 2310. The third optimization characteristic has a lower limit of at least 425, but other embodiments are also possible in which the third optimization characteristic can be defined with respect to the other lower limit. For example, in some embodiments, the third optimization property can include a lower limit of at least 435 or 445. The position of the head center of gravity 2500 can also be designed or set with respect to other features of the golf club head 1000 to satisfy relationship 3 and / or to achieve a third optimization characteristic. For example, the position of the head center of gravity 2500 can be configured such that the CG depth 2510 has about 25% to about 80% of the head depth length 2312. In the above, the head depth length 2312 is the dimension from the striking face center point 1211 to the intersection of the outer surface of the head rear portion 2160 and the depth surface 2310. As another example, the position of the head center of gravity 2500 can be configured such that the CG height 2520 has about 0% to about 13% of the axial length 2322 of the CG height. In the above, the CG height shaft length 2322 is the dimension from the intersection of the outer surface of the head upper portion 1120 and the CG height shaft 2320 to the intersection of the outer surface of the head sole portion 1130 and the CG height shaft 2320.

The golf club head 1000 can also include a fourth optimization characteristic regarding the balance between the hosel MOI 1711 (FIG. 1) and the horizontal MOI 1811 (FIG. 1). The hosel MOI 1711 is defined around the hosel shaft 1710. The horizontal MOI 1811 is defined around the head horizontal axis 1810. This axis extends from the head heel portion 1140 to the head toe portion 1150 through the head center of gravity 2500 and is parallel to the ground 1010 when the golf club head 1000 is in the address position with respect to the ground 1010.

In some examples, by increasing the horizontal MOI 1811, when the striking face 1210 deviates from the center and approaches the head upper portion 1120 or the head sole portion 1130 to hit the golf ball 2600, the golf club head 1000 around the head horizontal axis 1810 Rotation can be restricted. As a result, the tolerance of the golf club head 1000 is improved against the above-mentioned upper or lower hitting failure. For example, weights may be added or rearranged near the head front 1110 and / or the head rear 2160 to increase the horizontal MOI 1811. In the same or other example, the golf club head 1000 can be extended towards the head front 1110 and / or the head rear 2160.

However, such adjustments or changes to increase the horizontal MOI 1811 can be made to some extent before they begin to affect the characteristics of other golf club heads. For example, unlimited adjustments to increase the horizontal MOI 1811 can result in an excessive increase in the hosel MOI 1711 if not properly balanced. This increases the resistance to rotate the golf club head 1000 around the hosel shaft 1710, and for some to properly position the golf club head 1000 at impact with the golf ball 2600 (or "square"). It becomes difficult to "rotate" the golf club during a golf swing. By increasing the hosel MOI 1711, the gear effect between the golf ball 2600 and the striking face 1210 can also be limited or suppressed. Otherwise, this gear effect will slightly correct the spin of the golf ball 2600 at off-center impact.

To reduce the hosel MOI 1711, the golf club head 1000 can be designed to limit the distance between the hosel shaft 1710 and any additional or selective mass relative to the golf club head 1000. The above approach for reducing hosel MOI1711 can be inconsistent with some of the above approaches for increasing horizontal MOI1811 if not properly balanced. Therefore, when adding or redistributing weights to the golf club head 1000 to increase the horizontal MOI 1811, it is necessary to balance with respect to maintaining or limiting the increase in the hosel MOI 1711.

From the above point of view, the fourth optimization characteristic of the golf club head 1000 controls the relationship between the horizontal MOI 1811 and the hosel MOI 1711 so as to satisfy the following relationship 4.
(Horizontal MOI ₁₈₁₁ ) ≧ 39% (Hosel MOI ₁₇₁₁ ) [Relationship 4]

For the golf club head 1000, an example is possible in which the fourth optimization characteristic can be configured to exceed the requirement of relationship 4. As an example, in some embodiments, the fourth optimization characteristic of the golf club head 1000 is that the horizontal MOI 1811 is 40% or more of the hosel MOI 1711, 45% or more of the hosel MOI 1711, or 50% or more of the hosel MOI 1711. Can be configured to be. In this example, the horizontal MOI 1811 is about 3740 grams square centimeters (g · cm ² ), but it is also possible that this can be in the range of ^{about 2800 g · cm 2} to about 4300 g · cm ^2. Hosel MOI1711 is in this example is about 9370g · cm ^2, the same or another example may be in the range of about 7000 g · cm ² ~ about 11,000 g · cm ^2.

The golf club head 1000 can also include a fifth optimization characteristic regarding the balance between the hosel MOI 1711 and the vertical MOI 1611 (FIG. 1). The vertical MOI 1611 is defined around the head vertical axis 1610. This axis extends from the head upper portion 1120 to the head sole portion 1130 through the head center of gravity 2500 and is perpendicular to the ground 1010 when the golf club head 1000 is in the address position. Vertical MOI1611 is in this example is about 5300 g · cm ^2, the same or another example may be in the range of about 4700 g · cm ² ~ about 6000 g · cm ^2.

In some examples, by increasing the vertical MOI 1611, around the head vertical axis 1610 when the striking face 1210 is off center and closer to the head heel portion 1140 (or closer to the head toe portion 1150) to hit the golf ball 2600. The rotation of the golf club head 1000 can be restricted. As a result, the tolerance of the golf club head 1000 is improved against the above-mentioned damage on the heel side or the toe side. For example, weights can be added or rearranged near the head heel portion 1140 and / or the head toe portion 1150 to increase the vertical MOI 1611. In the same or other example, the golf club head can be extended towards the head heel portion 1140 and / or the head toe portion 1150.

However, such adjustments or changes to increase the vertical MOI 1611 can be made to some extent before they begin to affect the characteristics of other golf club heads. For example, unrestricted adjustments to increase the vertical MOI 1611 can result in an excessive increase in the hosel MOI 1711 if not properly balanced, thereby causing the golf club head 1000 as described above. The resistance to rotate around the hosel shaft 1710 increases. In addition, some approaches for reducing hosel MOI1711 may contradict some of the above approaches for increasing vertical MOI1611 if not properly balanced. Therefore, when adding or redistributing weights to the golf club head 1000 to increase the vertical MOI 1611, it is necessary to balance with respect to maintaining or limiting the increase in the hosel MOI 1711.

From the above point of view, the fifth optimization characteristic of the golf club head 1000 controls the relationship between the vertical MOI 1611 and the hosel MOI 1711 so as to satisfy the following relationship 5.
(Vertical MOI ₁₆₁₁ ) ≧ 59% (Hosel MOI ₁₇₁₁ ) [Relationship 5]

For the golf club head 1000, an example is possible in which the fifth optimization characteristic can be configured to exceed the requirement of relationship 5. As an example, in some embodiments, the fifth optimization characteristic of the golf club head 1000 is that the vertical MOI 1611 is 60% or more of the hosel MOI 1711, 65% or more of the hosel MOI 1711, or 70% or more of the hosel MOI 1711. Can be configured to be. In some examples, the golf club head 1000 can be configured such that its fourth optimization characteristic satisfies relationship 4 and its fifth optimization characteristic also satisfies relation 5.

In some embodiments, by adjusting the mass distribution of the golf club head 1000, or the relationships between the various elements of the golf club head 1000, the first, second, third, fourth and / or first described above. The golf club head 1000 can be configured to exhibit the optimization characteristics of 5. For such purposes, as can be seen from FIGS. 2-3, the golf club head 1000 can include a weight structure 2700 arranged near the head sole portion 1130 and the head rear portion 2160. In some configurations, it is possible to design and / or arrange the weight structure 2700 to meet the constraints imposed by relationship 1, relationship 2, relationship 3, relationship 4 and / or relationship 5. Therefore, the face height or face size of the striking face 1210, the head capacity of the golf club head 1000 of 2600, the position of the center of gravity 2500, and / or various moments of inertia are balanced.

As can be seen from FIG. 3, the weight structure 2700 can be arranged with respect to the clock face 3500, which can be aligned with respect to the striking face 1210. For example, the clock board 3500 includes a 12 o'clock line 3512, which line is aligned with the striking face center point 1211 of the present embodiment. The 12 o'clock line 3512 is orthogonal to the front line of intersection 3271, which is defined by the intersection of the loft plane 2270 (FIGS. 2-3) and the ground 1010 (FIGS. 1-2). The clock face 3500 is centrally located along the 12 o'clock line 3512 at the midpoint between the front end of the front 1110 and the rear end of the rear 2160. In the same or other example, the clock face center point 3515 can be positioned close to the geometric center of the golf club head 1000. The clock face 3500 also includes a 3 o'clock line 3503 extending toward the head heel portion 1140 and a 9 o'clock line 3509 extending toward the head toe portion 1150.

In this embodiment, the weight edge portion 2705 of the weight structure 2700 is arranged in the vicinity of the rear portion 2160 of the head, which is at least partially restricted between the 4 o'clock line 3504 and the 8 o'clock line 3508 of the clock face 3500. A weight center 2750 is arranged between the 5 o'clock line 3505 and the 7 o'clock line 3507. In examples such as the clock face, the weight edge 2705 is completely restricted between the 4 o'clock line 3504 and the 8 o'clock line 3508. In this example, the weight edge 2705 is defined on the outer surface of the golf club head 1000, but other examples are possible, in which case the weight edge may extend inside the golf club head 1000 ( Alternatively, it may be determined inside the golf club head 1000). In some examples, the position of the weight 2700 can be set for a wider area. For example, in the above example, the weight edge portion 2705 of the weight structure 2700 can be arranged at least partially between the 4 o'clock line 3504 and the 9 o'clock line 3509 of the clock face 3500 in the vicinity of the head rear portion 2160. At the same time, the weight center 2750 can be arranged between the 5 o'clock line 3505 and the 8 o'clock line 3508.

In the same or other embodiments, the weight structure 2700 can be extended or moved towards the heel portion 1140. For example, the weight edge 2705 and / or the weight center 2750 can be moved towards the 4 o'clock line 3504 instead of towards the 9 o'clock line 3509. When the weight structure 2700 is biased toward the head heel portion 1140, the hosel MOI 1711 around the hosel shaft 1710 can be reduced by limiting the distance between the hosel shaft 1710 and the weight structure 2700. Thereby, the golf club head 1000 can be made easier to rotate around the hosel shaft 1710 during the swing.

In some examples, the weight structure 2700 can have a mass of about 2 grams to about 50 grams and / or a volume of about 1 cc to about 30 cc. In this example, the weight structure 2700 projects from the external contour of the headsole portion 1130 and is therefore at least partially external, which allows the head center of gravity 2500 to be adjusted more significantly.

The weight structure 2700 may include a removable weight 2790 in the same or in other cases. In this case, the removable weight 2790 can have a mass of about 0.5 grams to about 30 grams, if necessary to satisfy relationship 1, relationship 2, relationship 3, relationship 4 and / or relationship 5. By replacing this weight with one or more other similar weights, the position of the head center of gravity 2500 can be adjusted. In the same or other example, the weight center 2750 is at least one of the center of gravity of the weight structure 2700, the center of gravity of the removable weight 2790, the geometric center of the weight structure 2700 and / or the geometric center of the removable weight 2790. Have one.

The weight center 2750 can be arranged with respect to the ground 1010 and the axis 2340 of the weight center vertical distance, which axis extends between the weight center 2750 and the ground 1010. The axis 2340 of the weight center vertical distance is perpendicular to the ground 1010 when the golf club head 1000 is in the address position with respect to the ground. Therefore, the weight center vertical distance 2730 of the weight center 2750 can be measured between the weight center 2750 and the ground 1010 along the axis 2340 of the weight center vertical distance. In addition, the weight center depth 2710 of the weight center 2750 can be measured between the intersection 2802 and the intersection 2804 in parallel with the ground 1010. In this example, the intersection 2804 is defined by the intersection between the ground 1010 and the axis 2340 of the weight center vertical distance when the golf club head 1000 is in the address position. In the same or other embodiment, the weight center 2750 can be arranged so that the weight distance 2751 (FIG. 2) separating the head center of gravity 2500 from the weight center 2750 can be from about 25 mm to about 102 mm.

An embodiment in which the thickness of the face portion 1200 can be reduced is also possible, but if necessary, the back surface and / or the face portion 1200 and the head portion of the striking face 1210 are used by using one or more reinforcing structures. The face portion 1200 may be reinforced at the joint portion of 1110. Other mass redistribution mechanisms may be utilized if desired to satisfy relations 1, relations 2, relations 3, relations 4 and / or relations 5.

In some embodiments, the relationship or ratio between the head center of gravity 2500 and the weight center 2750 can be configured to satisfy one or more of relationship 1, relationship 2, relationship 3, relationship 4 and / or relationship 5. be. For example, the vertical distance ratio determined by the ratio of the weight center vertical distance 2730 to the head CG vertical distance 2530 can be made larger than 0.44 to obtain the effect of maintaining the head center of gravity 2500 closer to the head sole portion 1130. can. In another example, the depth ratio determined by the ratio of the weight center depth 2710 to the head CG depth 2510 is less than 2.54 so that the CG depth 2510 does not become excessively shallow towards the head front 1110. be able to. Some embodiments are also possible in which the head CG vertical distance 2530 can be less than about 28.5 mm, in which case the weight center vertical distance 2730 can be less than about 12.5 mm and / or the weight. The central depth 2710 can be greater than about 99.7 mm.

FIG. 4 is a flow chart showing a method 4000 available for providing, forming and / or manufacturing a golf club head according to the present disclosure. In some examples, the golf club head can be similar to the golf club head 1000 (FIGS. 1-3) presented above.

Method 4000 includes a block 4100 that provides a head body for a golf club head, including a head front. In some examples, the head body can be similar to the head body 1100 (FIGS. 1-3), and the head front can be similar to the head front 1110 (FIGS. 1-3).

Block 4200 of Method 4000 includes connecting the face portion to the front portion of the head, which front portion of the head includes a striking face with an increased face size. In some examples, the face portion can be similar to the face portion 1200 (FIGS. 1-2), including the striking face 1210 with an increased face size (described above with respect to the face portion). .. For example, increasing the face size of the striking face may allow the face height to be up to about 71 mm in some examples.

Method 4000 can include a block 4300 that constitutes the golf club head to provide the first optimization characteristic, in which case the CG height between the center of gravity of the golf club head and the depth plane of the golf club head is , About 0 mm to about 5.08 mm (or 0.200 inch). In some examples, the first optimization property can be similar to that described above with respect to the relationship 1 that balances the face height or face size of the golf club head with respect to the center of gravity. In some examples, the CG height may be the same as the CG height 2520 (FIG. 2), the center of gravity may be the same as the head center of gravity 2500 (FIG. 2), and the head depth plane may be the head depth plane 2310 (FIG. 2). It can be the same as 2).

It is also possible that the method 4000 may include a block 4400 that constitutes the golf club head to provide a second optimization characteristic, in which case (a) 76.2 mm (or about 3.0 inches). The ratio of () minus the face height to (b) the CG depth between the center point of the striking face and the center of gravity is less than 0.56. In some examples, the second optimization characteristic can be similar to that described above with respect to the relationship 2 that balances the face height or face size of the golf club head with respect to the depth of the center of gravity. For example, the face height can be the same as the face height 1213, and the CG depth can be the same as the CG depth 2510.

In some examples, the method 4000 can include a block 4500 that constitutes the golf club head to have a third optimization characteristic, in which case the magnitude of the head capacitance is CG depth and CG height. The sum of the ratios is 425 or more. In some embodiments, the third optimization characteristic can be similar to that described above with respect to the relationship 3 that balances the head capacitance with respect to the position of the center of gravity. For example, the size of the head capacity can be the same as the size of the head capacity 2600 (FIG. 2), the CG depth can be the same as the CG depth 2510, and the CG height can be the same as the CG height. It can be the same as the height 2520.

Method 4000 can include Method 4600 in some embodiments that configure the golf club head to have a fourth optimization characteristic, in which case the horizontal moment of inertia of the golf club head is its hosel moment of inertia. 39% or more of. In some embodiments, the fourth optimization property can be similar to that described above with respect to the relationship 4 balancing the horizontal MOI 1811 with respect to the hosel MOI 1711 (FIG. 1). In the same or other examples, the magnitude of the horizontal moment of inertia can be similar to that described above for the horizontal MOI 1811. In addition, the magnitude of the hosel moment of inertia can be similar to that described above for the hosel MOI1711. It is also possible that the horizontal moment of inertia and / or the hosel moment of inertia can be balanced against other features (such as against the vertical moment of inertia of the golf club head).

Block 4700 of Method 4000 can be implemented in some embodiments that configure the golf club head to have a fifth optimization characteristic, in which case the vertical moment of inertia of the golf club head is its hosel inertia. It is 59% or more of the moment. In some embodiments, the fifth optimization property can be similar to that described above with respect to the relationship 5 balancing the vertical MOI 1611 with respect to the hosel MOI 1711 (FIG. 1). In the same or other examples, the magnitude of the vertical moment of inertia can be similar to that described above for vertical MOI 1611. In addition, the magnitude of the hosel moment of inertia can be similar to that described above for the hosel MOI1711. It is also possible that the vertical moment of inertia and / or the hosel moment of inertia can be balanced against other features (such as against the horizontal moment of inertia of block 4500).

In this example, Method 4000 also includes Block 4800, which provides a mass relocation mechanism for adjusting the center of gravity of the golf club head. In some examples, the mass relocation mechanism can be configured to allow the golf club head to meet the requirements for block 4300, block 4400, block 4500, block 4600 and / or block 4700 of Method 4000. The mass rearrangement mechanism can include a weight structure such as a weight structure 2700 (FIGS. 2-3), whereby the center of gravity is near the sole and / or rear of the golf club head, if desired. The position can be adjusted. In the same or other embodiment, the mass rearrangement mechanism can reduce the thickness of the face portion of the golf club head, but at this time, if necessary, the back surface of the striking face and / or the golf club. At the joint between the face portion of the head and the head body, the face portion of the golf club head may be reinforced by using one or more reinforcing structures.

In some examples, one or more of the different blocks of Method 4000 can be integrated into one block or simultaneously, and / or the order of each of these blocks can be changed. For example, in some embodiments (such as when at least a portion of the face and head body is made up of a single piece of material), block 4100 and block 4200 may be combined. In the same or other example, block 4800 may be combined with one or more of block 4100, block 4300, block 4400, block 4500, block 4600 and / or block 4700, such as using the mass rearrangement mechanism of block 4800. This may be achieved simultaneously by adjusting the center of gravity, face height, face size, head capacitance and / or one or more moments of inertia of the golf club head. In the same or other example, a portion of each block of Method 4000 can be subdivided into several subblocks. For example, the block 4100 can be subdivided into several sub-blocks that provide different parts of the head body of the golf club head. It is also possible that Method 4000 may include additional blocks or different blocks. As an example, method 4000 may include another block that provides or connects the golf club shaft to the head body of block 4100. In addition, there may be an example in which the method 4100 can include only a part of each of the above-mentioned blocks. For example, one or more of block 4300, block 4400, block 4500, block 4600 and / or block 4700 may be optional in some embodiments and / or block 4300, block 4400, block 4500, block 4600 and /. Alternatively, block 4800 may be omitted if it is not necessary to achieve the requirements of block 4700. Other variations can be implemented for Method 4000 without departing from the scope of the present disclosure.

Although the golf club heads having optimized characteristics and related methods have been described herein with reference to specific embodiments, making various modifications without departing from the concepts or scope of the present disclosure. Is possible. For example, the above example can be described in the context of a driver-type golf club, but the devices, methods and products described herein are of other types of golf clubs (fairway wood-type). It may be applicable to golf clubs, hybrid golf clubs, iron golf clubs, wedge golf clubs or putter golf clubs, etc.). Alternatively, the devices, methods and products described herein may be applicable to other types of sporting goods (hockey sticks, tennis rackets, fishing rods, ski poles, etc.).

Other examples of these changes and others have been given in the above description. Other replacements of various embodiments having one or more features of the various features are similarly contemplated. Therefore, the present specification, the scope of claims and the drawings of the present specification are intended to be an example of the scope of the present disclosure, and are not intended to be limited. It is intended that the scope of this application should be limited only to the extent required by the appended claims.

Golf club heads and related methods with the optimization characteristics described herein may be implemented in various embodiments, and the aforementioned discussion of some of these embodiments is not necessarily all possible embodiments. Does not represent the complete description of. Rather, the detailed description of the drawings and the drawings themselves disclose at least one preferred embodiment and may disclose alternative embodiments.

All elements claimed in any particular claim are essential for the embodiment patented in that particular claim. As a result, the replacement of one or more claimed elements is a reconstruction rather than a correction. In addition, for certain embodiments, benefits, other benefits and solutions to problems have been described. However, any one or more of the claims may be a benefit, an advantage, a solution to a problem, and any one or more elements that may give rise to, or make more obvious, any benefit, advantage, or solution. Or interpreting it as a very important, necessary or essential feature or element for all is unless such benefit, advantage, solution, or element is explicitly stated in such claim. Should not be done.

Golf rules can change from time to time (eg, by golf standardization organizations and / or golf management bodies such as the United States Golf Association (USGA), the Royal and Ancient Golf Club of St. Andrews: R & A). New provisions may be adopted, or old rules may be abolished or changed), and golf equipment relating to the equipment, methods and products described herein may be used at any particular time. It may or may not meet the rules of golf. Accordingly, golf equipment relating to the devices, methods and products described herein may be advertised, offered for sale and / or sold as conforming or non-conforming golf equipment. The devices, methods and products described herein are not limited in this regard.

Moreover, the embodiments and limitations disclosed herein are claimed under the doctrine of equivalents, where the embodiments and / or limitations are not explicitly claimed in (1) claims. If it is an explicit element and / or a limited equivalent in, or a potential equivalent, it will not be offered for public use under the doctrine of dedication.
The features of this embodiment are listed below.
(Feature 1)
A golf club head
A head body including a hosel structure having an inner diameter portion for receiving a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a golf club shaft, and the inner diameter portion has a hosel shaft. When,
A face portion on the front portion of the head, the striking face having a striking face center point and a striking face edge portion, and a face portion having a face height limited by the striking face edge portion.
The center of gravity of the head and
With at least one of the first performance characteristics or the second performance characteristics,
When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and the head. Orthogonal to the vertical axis,
The loft surface of the golf club head is in contact with the center point of the striking face.
The front surface of the golf club head extends parallel to the hosel axis through the striking face center point.
The head depth surface extends through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface.
The axis of the center of gravity (CG) height extends through the center of gravity of the head and intersects the depth surface of the head perpendicularly at the first intersection.
The head CG height of the head center of gravity is measured between the head center of gravity and the first intersection along the axis of the CG height.
The head CG depth of the center of gravity of the head is parallel to the ground between a second intersection located at the intersection of the front surface and the ground and a third intersection located at the intersection of the vertical axis of the head and the ground. And measured perpendicular to the front surface
The face height is about 33 mm to about 71 mm as measured in parallel with the loft surface.
The first performance characteristic has the head CG height of about 5.08 mm or less.
The second performance characteristic is a golf club head having a CG performance ratio of 0.56 or less, which is determined by (a) subtracting the face height from 76.2 mm and (b) dividing by the head CG depth. ..
(Feature 2)
The golf club head according to feature 1, wherein the golf club head has the first performance characteristic.
(Feature 3)
The golf club head according to feature 1 or feature 2, wherein the golf club head has the second performance characteristic.
(Feature 4)
The golf club head according to any one of features 1 to 3, wherein the striking face has an area of about 23.6 ^{cm 2} to about 45.2 cm ^2.
(Feature 5)
The head body includes a weight structure arranged in the vicinity of the sole portion and the rear portion of the head body.
The weight structure is
The face size of the striking face, which is determined by the face height, is increased to make the impact region larger, and more energy is transferred to the golf ball at the time of golf impact between the striking face and the golf ball.
The increased face size limits the head CG depth from becoming shallower towards the front of the head, thereby at least one of the dynamic loft of the striking face or the launch angle of the golf ball at the golf impact. Improve,
The increased face size limits the head CG height from rising towards the top of the head, thereby causing the golf ball to have a gear effect between the striking face and the golf ball at the time of the golf impact. The golf club head according to any one of features 1 to 4, which reduces backspin.
(Feature 6)
The head body includes a weight structure arranged in the vicinity of the head sole portion and the rear portion of the head.
The weight structure protrudes at least partially from the external contour of the head sole portion.
The golf club head according to any one of features 1 to 4, wherein the weight structure has a weight mass of about 2 grams to about 50 grams and a weight volume of about 1 cubic centimeter to about 30 cubic centimeters.
(Feature 7)
The head body includes a weight structure arranged in the vicinity of the sole portion and the rear portion of the head body.
The golf club head according to any one of features 1 to 4, wherein the weight distance between the center of gravity of the head and the center of the weight of the weight structure is about 25 mm to about 102 mm.
(Feature 8)
The head body has a weight center, and includes a weight structure arranged in the vicinity of the head sole portion and the head rear portion.
The axis of the weight center vertical distance extends between the weight center and the ground and is perpendicular to the ground when the golf club head is in the address position.
The head CG vertical distance is measured between the center of gravity of the head and the ground along the vertical axis of the head.
The weight center vertical distance is measured between the head center of gravity and the ground along the axis of the weight center vertical distance.
The golf club head according to any one of features 1 to 4, wherein the vertical distance ratio determined by dividing the weight center vertical distance by the head CG vertical distance is larger than 0.44.
(Feature 9)
The head body has a weight center, and includes a weight structure arranged in the vicinity of the head sole portion and the head rear portion.
The axis of the weight center vertical distance extends between the weight center and the ground and is perpendicular to the ground when the golf club head is in the address position.
The weight center depth of the weight center is between the second intersection at the intersection between the front surface and the ground and the fourth intersection at the intersection of the weight center vertical distance axis and the ground. Measured parallel to the ground
The golf club head according to any one of claims 1 to 4, wherein the depth ratio determined by dividing the weight center depth by the head CG depth is less than 2.54.
(Feature 10)
The face portion includes a striking plate, and the striking plate is joined to the front portion of the head along the striking plate end portion of the striking plate.
The striking plate end defines at least a part of the striking face edge portion of the striking face.
The striking face edge includes the upper end of the striking face and the lower end of the striking face.
The golf club head according to any one of features 1 to 9, wherein the face height is measured from the lower end of the hitting face to the upper end of the hitting face.
(Feature 11)
Further provided with a head front surface including the striking face,
The striking face includes a vertical roll radius extending along the striking face and across the striking face center point.
The striking face edge portion is the upper end of the striking face at the upper transition boundary where the contour of the front surface of the head is separated from the vertical roll radius, and the lower transition where the contour of the face portion is separated from the vertical roll radius. Including the bottom edge of the striking face at the boundary
The face height is measured from the lower end of the striking face to the upper end of the striking face.
The golf club head according to any one of features 1 to 9.
(Feature 12)
The golf club head according to any one of features 1 to 11, wherein the head CG depth is about 25 mm to about 102 mm.
(Feature 13)
The golf club head according to any one of features 1 to 12, wherein the head CG height is about 0 mm to about 5.08 mm.
(Feature 14)
The head body is composed of a driver type body.
The head CG height is about 0 mm to about 5.08 mm.
The head CG depth is about 25 mm to about 102 mm.
The head capacity of the golf club head ranges from about 420 cubic centimeters to about 470 cubic centimeters.
The golf club head according to any one of features 1 to 11, wherein the head weight of the golf club head is about 185 grams to about 225 grams.
(Feature 15)
The golf club head according to any one of features 1 to 11, wherein the head CG height is about 0 mm to about 4.45 mm.
(Feature 16)
The golf club head according to any one of features 1 to 11, wherein the head CG height is about 0 mm to about 3.81 mm.
(Feature 17)
A golf club head
A head body including a hosel structure having an inner diameter portion for receiving a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a golf club shaft, and the inner diameter portion has a hosel shaft. When,
A face portion connected to the front portion of the head and including a striking face center point, a striking face edge portion, and a striking face having a face height,
With the center of gravity of the head,
When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and the head. Orthogonal to the vertical axis,
The loft surface of the golf club head is in contact with the center point of the striking face.
The front surface of the golf club head extends parallel to the hosel axis through the striking face center point.
The head depth surface extends through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface.
The axis of the center of gravity (CG) height extends through the center of gravity of the head and intersects the depth surface of the head perpendicularly at the first intersection.
The head CG height of the head center of gravity is measured between the head center of gravity and the first intersection along the axis of the CG height.
The head CG depth of the center of gravity of the head is parallel to the ground between a second intersection located at the intersection of the front surface and the ground and a third intersection located at the intersection of the vertical axis of the head and the ground. And measured perpendicular to the front surface
The face height is determined by the striking face edge and is about 33 mm to about 71 mm measured in parallel with the loft surface.
The CG performance ratio of (a) 76.2 mm minus the face height and (b) the head CG depth is 0.56 or less.
The head body is composed of a driver type body.
The head capacity of the golf club head ranges from about 420 cubic centimeters to about 470 cubic centimeters.
The head weight of the golf club head is about 185 grams to about 225 grams.
The head CG height is about 0 mm to about 3.18 mm.
The head CG depth is about 25 mm to about 102 mm.
The head body is a golf club head including a weight structure arranged in the vicinity of the sole portion and the rear portion of the head body.
(Feature 18)
The weight structure is
The face size of the striking face, which is determined by the face height, is increased to make the impact region larger, and more energy is transferred to the golf ball at the time of golf impact between the striking face and the golf ball.
The increased face size limits the head CG depth from becoming shallower towards the hitting face, thereby limiting the dynamic loft of the hitting face or at least one of the launch angles of the golf ball at the golf impact. Improve,
The increased face size limits the head CG height from rising towards the top of the head, thereby causing the golf ball to have a gear effect between the striking face and the golf ball at the time of the golf impact. The golf club head according to feature 17, which reduces backspin.
(Feature 19)
The golf club head according to feature 17 or feature 18, wherein the weight distance between the center of gravity of the head and the center of the weight of the weight structure is about 25 mm to about 102 mm.
(Feature 20)
How to provide a golf club head
A head body including a hosel structure having an inner diameter portion for receiving a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a golf club shaft, and the inner diameter portion has a hosel shaft. To provide,
A face portion including a striking face center point, a striking face edge portion, and a striking face having a face height limited by the striking face edge portion is connected to the front portion of the head, and a first of the golf club heads. Including setting at least one of the performance characteristics or the second performance characteristics of the golf club head.
When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity of the golf club head and is perpendicular to the ground, and the head horizontal axis passes through the head center of gravity. As it extends, it is orthogonal to the vertical axis of the head and
The loft surface of the golf club head is in contact with the center point of the striking face.
The front surface of the golf club head extends parallel to the hosel axis through the striking face center point.
The head depth surface extends through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface.
The axis of the center of gravity (CG) height extends through the center of gravity of the head and intersects the depth surface of the head perpendicularly at the first intersection.
The head CG height of the golf club head is measured between the center of gravity of the head and the first intersection along the axis of the CG height.
The head CG depth of the center of gravity of the head is parallel to the ground and between the second intersection located at the intersection of the front surface and the ground and the third intersection located at the intersection of the vertical axis of the head and the ground. Measured perpendicular to the front surface
The face height is about 33 mm to about 71 mm as measured in parallel with the loft surface.
The first performance characteristic has the head CG height of about 5.08 mm or less.
The second performance characteristic is a method having a CG performance ratio of 0.56 or less, which is determined by (a) subtracting the face height from 76.2 mm and (b) dividing by the head CG depth.
(Feature 21)
The method according to feature 20, wherein the golf club head has the first performance characteristic.
(Feature 22)
The method according to feature 20 or feature 21, wherein the golf club head comprises the second performance characteristic.

Claims (22)

A golf club head
A head body including a hosel structure having an inner diameter portion for receiving a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a golf club shaft, and the inner diameter portion has a hosel shaft. When,
A face portion in the head front, have a face height is limited by the striking face and said striking face edge having a striking face center point and the striking face edge, the striking face center point the face The face part located at the midpoint of the height and
The center of gravity of the head and
With at least one of the first performance characteristics or the second performance characteristics,
When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and the head. Orthogonal to the vertical axis,
The loft surface of the golf club head is in contact with the center point of the striking face.
The front surface of the golf club head extends through the striking face center point, is parallel to the hosel axis, and is perpendicular to the ground .
The head depth surface extends through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface.
The axis of the center of gravity (CG) height extends through the center of gravity of the head and intersects the depth surface of the head perpendicularly at the first intersection.
The head CG height of the head center of gravity is measured between the head center of gravity and the first intersection along the axis of the CG height.
The head CG depth of the center of gravity of the head is parallel to the ground between a second intersection located at the intersection of the front surface and the ground and a third intersection located at the intersection of the vertical axis of the head and the ground. And measured perpendicular to the front surface
The head CG depth is 40.64 mm or more, and the head CG depth is 40.64 mm or more.
The head CG height is 0 mm to 5.08 mm, and the head CG height is 0 mm to 5.08 mm.
The face height is to 3 3 mm to 7 1 mm measured parallel to the loft plane,
The first performance characteristic is that the head CG height is 5 . Has less than 08 mm
The second performance characteristic, (a) from 76.2mm pull the face height, possess at 0.56 or less (b) CG performance ratio defined by dividing by the head CG depth,
The head body is a removable weight structure that is arranged near the sole portion and the rear portion of the head body and at least partially projects outward from the outer contour of the head sole portion toward the outside of the golf club head. Prepare,
The clock face includes at least 12 o'clock, 3 o'clock, 4 o'clock, 5 o'clock, 8 o'clock and 9 o'clock.
When the golf club head is at the address position with respect to the ground, when the golf club head is viewed from below, the 12 o'clock line is aligned with the center point of the striking face, and the loft surface and the loft surface are aligned. Orthogonal to the front line of intersection between the ground,
The clock face is centrally located along the 12 o'clock line at a midpoint between the front end of the front portion of the head and the rear end of the rear portion of the head.
The 3 o'clock line extends toward the head heel portion and extends.
The 9 o'clock line extends toward the head toe portion.
The edge of the removable weight structure is restricted between the 4 o'clock line and the 9 o'clock line.
The center of gravity of the removable weight structure that is disposed between the 5 o'clock line and the 8 o'clock line, the golf club head. The golf club head according to claim 1, wherein the golf club head has the first performance characteristic. The golf club head according to claim 1 or 2, wherein the golf club head has the second performance characteristic. The area of the striking face is ² 3.6cm 2 ~ 4 5.2cm 2, the golf club head according to any one of claims 1 to 3. Before Symbol removable weight structure,
The face size of the striking face, which is determined by the face height, is increased to make the impact region larger, and more energy is transferred to the golf ball at the time of golf impact between the striking face and the golf ball.
The increased face size limits the head CG depth from becoming shallower towards the front of the head, thereby at least one of the dynamic loft of the striking face or the launch angle of the golf ball at the golf impact. Improve,
The increased face size limits the head CG height from rising towards the top of the head, thereby causing the golf ball to have a gear effect between the striking face and the golf ball at the time of the golf impact. The golf club head according to any one of claims 1 to 4, which reduces backspin. Before SL detachable weight structure is at least partially protruding from the outer contour of the head sole portion,
The weight structure 2 grams to 5 0 having a weight by volume of the weight mass and 1 cm3 to 3 0 cm3 grams, golf club head according to any one of claims 1 to 4. Weight the distance between the mass centers of the front SL head center of gravity the detachable weight structure is 25Mm～102mm, golf club head according to any one of claims 1 to 4. The axis of the weight center vertical distance extends between the weight center and the ground and is perpendicular to the ground when the golf club head is in the address position.
The head CG vertical distance is measured between the center of gravity of the head and the ground along the vertical axis of the head.
The weight center vertical distance is measured between the head center of gravity and the ground along the axis of the weight center vertical distance.
The golf club head according to any one of claims 1 to 4, wherein the vertical distance ratio determined by dividing the weight center vertical distance by the head CG vertical distance is larger than 0.44. The removable weight structure has a weight center and has a weight center.
The axis of the weight center vertical distance extends between the weight center and the ground and is perpendicular to the ground when the golf club head is in the address position.
The weight center depth of the weight center is between the second intersection at the intersection between the front surface and the ground and the fourth intersection at the intersection of the weight center vertical distance axis and the ground. Measured parallel to the ground
The golf club head according to any one of claims 1 to 4, wherein the depth ratio determined by dividing the weight center depth by the head CG depth is less than 2.54. The face portion includes a striking plate, and the striking plate is joined to the front portion of the head along the striking plate end portion of the striking plate.
The striking plate end defines at least a part of the striking face edge portion of the striking face.
The striking face edge includes the upper end of the striking face and the lower end of the striking face.
The golf club head according to any one of claims 1 to 9, wherein the face height is measured from the lower end of the striking face to the upper end of the striking face. Further provided with a head front surface including the striking face,
The striking face includes a vertical roll radius extending along the striking face and across the striking face center point.
The striking face edge portion is the upper end of the striking face at the upper transition boundary where the contour of the front surface of the head is separated from the vertical roll radius, and the lower transition where the contour of the face portion is separated from the vertical roll radius. Including the bottom edge of the striking face at the boundary
The face height is measured from the lower end of the striking face to the upper end of the striking face.
The golf club head according to any one of claims 1 to 9. The head body is composed of a driver type body.
Head capacity before Symbol golf club head is a 4-20 cm3 to 4 70 cubic centimeters,
The head weight of the golf club head 1 is 85 grams to 2 25 g, golf club head according to any one of claims 1 to 11. The head CG height is 0 mm to 4 . The golf club head according to any one of claims 1 to 11, which is 45 mm. The head CG height is 0 mm to 3 . The golf club head according to any one of claims 1 to 11, which is 81 mm. A golf club head
A head body including a hosel structure having an inner diameter portion for receiving a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a golf club shaft, and the inner diameter portion has a hosel shaft. When,
And coupled to said head front, striking face center point, have a striking face edge and the face height, the face portion of the striking face center point includes a striking face located at the midpoint of the face height,
With the center of gravity of the head,
When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity and is perpendicular to the ground, and the head horizontal axis extends through the head center of gravity and the head. Orthogonal to the vertical axis,
The loft surface of the golf club head is in contact with the center point of the striking face.
The front surface of the golf club head extends through the striking face center point, is parallel to the hosel axis, and is perpendicular to the ground .
The head depth surface extends through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface.
The axis of the center of gravity (CG) height extends through the center of gravity of the head and intersects the depth surface of the head perpendicularly at the first intersection.
The head CG height of the head center of gravity is measured between the head center of gravity and the first intersection along the axis of the CG height.
The head CG depth of the center of gravity of the head is parallel to the ground between a second intersection located at the intersection of the front surface and the ground and a third intersection located at the intersection of the vertical axis of the head and the ground. And measured perpendicular to the front surface
The face height is defined by the striking face edges, a 3 3 mm to 7 1 mm measured parallel to the loft plane,
The CG performance ratio of (a) 76.2 mm minus the face height and (b) the head CG depth is 0.56 or less.
The head body is composed of a driver type body.
Head volume of the golf club head is a 4 20 cm3 - 4 70 cm3,
Head weight of the golf club head is 1 85 g to 2 25 g,
The height of the head CG is 0 mm to 3 . 18 mm
The head CG depth is 40.64 mm or more , and the head CG depth is 40.64 mm or more.
The head body includes a weight structure arranged in the vicinity of the sole portion and the rear portion of the head body .
The head body is a removable weight structure that is arranged near the sole portion and the rear portion of the head body and at least partially projects outward from the outer contour of the head sole portion toward the outside of the golf club head. Prepare,
The clock face includes at least 12 o'clock, 3 o'clock, 4 o'clock, 5 o'clock, 8 o'clock and 9 o'clock.
When the golf club head is at the address position with respect to the ground, when the golf club head is viewed from below, the 12 o'clock line is aligned with the center point of the striking face, and the loft surface and the loft surface are aligned. Orthogonal to the front line of intersection between the ground,
The clock face is centrally located along the 12 o'clock line at a midpoint between the front end of the front portion of the head and the rear end of the rear portion of the head.
The 3 o'clock line extends toward the head heel portion and extends.
The 9 o'clock line extends toward the head toe portion.
The edge of the removable weight structure is restricted between the 4 o'clock line and the 9 o'clock line.
The center of gravity of the removable weight structure that is disposed between the 5 o'clock line and the 8 o'clock line, the golf club head. The detachable weight structure is
The face size of the striking face, which is determined by the face height, is increased to make the impact region larger, and more energy is transferred to the golf ball at the time of golf impact between the striking face and the golf ball.
The increased face size limits the head CG depth from becoming shallower towards the hitting face, thereby limiting the dynamic loft of the hitting face or at least one of the launch angles of the golf ball at the golf impact. Improve,
The increased face size limits the head CG height from rising towards the top of the head, thereby causing the golf ball to have a gear effect between the striking face and the golf ball at the time of the golf impact. reducing backspin golf club head of claim 1 5. The weight distance between the mass center of the center of gravity of the head and the removable weight structure is 2 5mm~ 1 02mm, claim 1 5 or golf club head according to claim 1 6. The golf club head according to any one of claims 15 to 17, wherein the head CG height is 0 mm to 3.81 mm. The golf club head according to claim 15, wherein the head CG height is 0 mm to 4.45 mm. How to provide a golf club head
A head body including a hosel structure having an inner diameter portion for receiving a head front portion, a head rear portion, a head heel portion, a head toe portion, a head sole portion, a head upper portion, and a golf club shaft, and the inner diameter portion has a hosel shaft. To provide,
The head front, striking face center point, seen including a striking face having a face height is limited by the striking face edge and the strike face edge, the striking face center point to center point of the face height Including connecting the positioned face portions and setting at least one of the first performance characteristic of the golf club head or the second performance characteristic of the golf club head.
When the golf club head is in the address position with respect to the ground, the head vertical axis extends through the head center of gravity of the golf club head and is perpendicular to the ground, and the head horizontal axis passes through the head center of gravity. As it extends, it is orthogonal to the vertical axis of the head and
The loft surface of the golf club head is in contact with the center point of the striking face.
The front surface of the golf club head extends through the striking face center point, is parallel to the hosel axis, and is perpendicular to the ground .
The head depth surface extends through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface.
The axis of the center of gravity (CG) height extends through the center of gravity of the head and intersects the depth surface of the head perpendicularly at the first intersection.
The head CG height of the golf club head is measured between the center of gravity of the head and the first intersection along the axis of the CG height.
The head CG depth of the center of gravity of the head is parallel to the ground and between the second intersection located at the intersection of the front surface and the ground and the third intersection located at the intersection of the vertical axis of the head and the ground. Measured perpendicular to the front surface
The face height is to 3 3 mm to 7 1 mm measured parallel to the loft plane,
The head CG depth is 40.64 mm or more, and the head CG depth is 40.64 mm or more.
The head CG height is 0 mm to 5.08 mm, and the head CG height is 0 mm to 5.08 mm.
The first performance characteristic is that the head CG height is 5 . Has less than 08 mm
The second performance characteristic is to have a (a) by subtracting the face height from 76.2 mm (b) the CG performance ratio defined by dividing the head CG depth 0.56 or less,
The head body is a removable weight structure that is arranged near the sole portion and the rear portion of the head body and at least partially projects outward from the outer contour of the head sole portion toward the outside of the golf club head. Prepare,
The clock face includes at least 12 o'clock, 3 o'clock, 4 o'clock, 5 o'clock, 8 o'clock and 9 o'clock.
When the golf club head is at the address position with respect to the ground, when the golf club head is viewed from below, the 12 o'clock line is aligned with the center point of the striking face, and the loft surface and the loft surface are aligned. Orthogonal to the front line of intersection between the ground,
The clock face is centrally located along the 12 o'clock line at a midpoint between the front end of the front portion of the head and the rear end of the rear portion of the head.
The 3 o'clock line extends toward the head heel portion and extends.
The 9 o'clock line extends toward the head toe portion.
The edge of the removable weight structure is restricted between the 4 o'clock line and the 9 o'clock line.
The center of gravity of the removable weight structure that is disposed between the 8 o'clock line and the 5 o'clock line method. The method of claim 20, wherein the golf club head comprises the first performance characteristic. The method of claim 20 or 21, wherein the golf club head comprises the second performance characteristic.

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