JP2016512153A - Golf club head with optimized properties and related methods - Google Patents

Abstract

Embodiments of golf club heads with optimized properties are presented herein. Other examples and related methods are also disclosed herein. [Selection] Figure 1

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a U.S. patent application Ser.
US patent application Ser. No. 13 / 804,917 filed at the US Patent and Trademark Office on March 14, 2013;
This is an international patent application claiming the advantages of US patent application Ser. No. 13 / 826,111 filed at the US Patent and Trademark Office on March 14, 2013.
The above disclosure is incorporated herein by reference as part of this specification.

  The present disclosure relates generally to sports equipment, and more specifically to golf club heads and related methods with optimized characteristics.

  Golf club heads often have various features, which can be designed or set to improve one or more performance characteristics of the golf club head. However, these various features are often inherently interworking, and adjusting or setting one feature can potentially change another feature, which is often disadvantageous. As an example, if the hitting face of a golf club is widened to increase the impact area, the center of gravity position of the golf club may change disadvantageously. If not set or designed in a balanced manner, unintended performance may result.

  In light of the above, further progress is made with respect to the characteristics of the golf club and the performance of the golf club is improved by balancing these characteristics with respect to each other.

The present disclosure may be further understood by reading the following detailed description of example embodiments in conjunction with the accompanying drawings. For simplicity and clarity of illustration, each drawing illustrates a general form of construction, and descriptions and details of well-known features and techniques are omitted so as not to obscure the present disclosure more than necessary. May be. Further, the elements of the drawings are not necessarily drawn to scale. For example, some elements of the drawings may be exaggerated in size compared to other elements in order to facilitate understanding of the embodiment of the present disclosure.
The same reference numbers in different drawings represent the same element. In this specification and claims, terms such as “first”, “second”, “third”, “fourth”, etc., are used to distinguish between similar elements, as appropriate. Are not necessarily used to describe a particular order or time series order. The terminology so used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented, for example, in a different order than that described or illustrated herein. Should be understood. Further, since “including” and “having” and any variations thereof are intended to include non-exclusive inclusions, a process, method, system, article, device or apparatus including the listed elements is not necessarily It is not limited to these elements and may include other elements not explicitly listed or inherent in such processes, methods, systems, articles, equipment or devices. .
In the present specification and claims, terms such as “left”, “right”, “front”, “rear”, “upper”, “lower”, “upper”, “lower” Is not necessarily used to describe a permanent relative position. The terminology so used is interchangeable under appropriate circumstances, so that embodiments of the apparatus, methods and / or articles of manufacture 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 “couple”, “coupled”, “coupled”, “coupled”, etc. should be interpreted broadly, which means that two or more elements are joined mechanically or otherwise. Point to. The coupling (either mechanically or otherwise) may be over any period of time, eg permanent or semi-permanent, or momentary only.
Even when there is no term such as “detachable” or “detachable” near a term such as “connected”, it does not mean whether the connection is removable.
As defined herein, two or more elements are “integral” if they are composed of the same piece of material. As defined herein, two or more elements are “non-integral” when each is composed of a different piece of material.
1 is a front view of a golf club head according to the present disclosure. FIG. 2 is a side sectional view of the golf club head taken along line II-II in FIG. 1. FIG. 3 is a bottom view of the golf club head of FIGS. 2 is a flowchart of a method that can be used to provide, form and / or manufacture a golf club head according to the present disclosure.

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

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

  In one embodiment, a method for providing a golf club head can include providing a head body including a head interior and a hosel structure. The inside of the head can be bounded by a head front part, a head rear part, a head heel part, a head toe part, a head upper part, and a head sole part. The hosel structure can have an inner diameter for receiving a golf club shaft, in which the inner diameter can have a hosel axis. The method may also include coupling a golf club shaft to the hosel structure. The head horizontal axis extends from the head heel portion to the head toe portion through the head center of gravity 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 head vertical axis extends from the top 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, providing the head body includes: (a) setting the horizontal moment of inertia about the head horizontal axis to be 39% or more of the hosel moment of inertia about the hosel axis; or (b) about the head vertical axis. The vertical moment of inertia of the hosel axis may be set to be 59% or more of the hosel moment of inertia about the hosel axis.

  In one example, a golf club head can include 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. The hosel structure has an inner diameter for receiving a shaft of a golf club, and in this structure, the inner diameter can have a hosel axis. 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 centimeters (cc), a head capacity that is greater than 420, and a head center of gravity. And optimization properties can also be provided. 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 touch the hitting face center point. The front surface of the golf club head can extend parallel to the hosel axis through the strike face center point. The head depth surface can extend through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface. An axis of center of gravity (CG) height can extend through the head center of gravity and can intersect the head depth plane perpendicularly at the first intersection. The head CG height of the head centroid can be measured between the head centroid and the first intersection along the CG height axis. The head CG depth of the head center of gravity 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 head vertical axis and the ground. And can be measured perpendicular to the front surface. The optimization characteristics can be determined by adding (a) the head capacity magnitude 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 higher.

  In one example, a golf club head can include 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. The hosel structure has an inner diameter for receiving a shaft of a golf club, and in this structure, the inner diameter can have a hosel axis. The golf club head can also include a striking face at the front of the head and having a striking face center point, and a head center of gravity. 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 touch the hitting face center point. The front surface of the golf club head can extend parallel to the hosel axis through the strike face center point. The head depth surface can extend through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface. The CG height axis can extend through the center of gravity of the head and can intersect the head depth plane perpendicularly at the first intersection. The head CG height of the head centroid can be measured between the head centroid and the first intersection along the CG height axis. The head CG depth of the head center of gravity 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 head vertical axis and the ground. And 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, a method for providing a golf club head can 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. . The hosel structure has an inner diameter portion for receiving a shaft of a golf club, and the inner diameter portion has a hosel shaft. The method can also include coupling the striking face to the head front and setting optimization characteristics of the golf club head. The hitting face has a hitting 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 relative to the ground, the head vertical axis can extend through the head center of gravity 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 touch the hitting face center point. The front surface of the golf club head can extend parallel to the hosel axis through the strike face center point. The head depth surface can extend through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface. The CG height axis can extend through the center of gravity of the head and can intersect the head depth plane perpendicularly at the first intersection. The head CG height of the head centroid can be measured between the head centroid and the first intersection along the CG height axis. The head CG depth of the head center of gravity 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 head vertical axis and the ground. And can be measured perpendicular to the front surface. The optimization characteristic can be set by adding (a) the size of the head capacity to (b) the ratio of the head CG depth divided by the absolute value of the CG height of the head. The characteristic can be 425 or more.

  In one example, a golf club head can comprise a head body, a face portion and a head center of gravity, and at least one of a first performance characteristic or a second performance characteristic. The head body can include a head front part, a head rear part, a head heel part, a head toe part, a head sole part, a head upper part, and a hosel structure. The hosel structure has an inner diameter for receiving a golf club shaft, and the inner diameter has a hosel axis. The face portion can be in the front of the head and can have a face height limited by the hitting face center point, the hitting face edge, and the hitting face edge. 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 touch the hitting face center point. The front surface of the golf club head can extend parallel to the hosel axis through the strike face center point. The head depth surface can extend through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface. The CG height axis can extend through the center of gravity of the head and can intersect the head depth plane perpendicularly at the first intersection. The head CG height of the head centroid can be measured between the head centroid and the first intersection along the CG height axis. The head CG depth of the head center of gravity 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 head vertical axis and the ground. And can be measured perpendicular to the front surface. The face height can be about 33 mm to about 71 mm, measured parallel to the loft surface. The first performance characteristic may have a head CG height of about 5.08 mm or less. The second performance characteristic may have a CG performance ratio of 0.56 or less determined by (a) subtracting the face height from 76.2 mm and (b) dividing by the head CG depth.

  In one example, a golf club head can include a head body, a face portion, and a head center of gravity. The head body can include a head front part, a head rear part, a head heel part, a head toe part, a head sole part, a head upper part, and a hosel structure. The hosel structure has an inner diameter for receiving a golf club shaft, and the inner diameter has a hosel axis. The face portion can be coupled to the front of the head and can comprise a striking face having a striking face center point, a striking face edge 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 touch the hitting face center point. The front surface of the golf club head can extend parallel to the hosel axis through the strike face center point. The head depth surface can extend through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface. The CG height axis can extend through the center of gravity of the head and can intersect the head depth plane perpendicularly at the first intersection. The head CG height of the head centroid can be measured between the head centroid and the first intersection along the CG height axis. The head CG depth of the head center of gravity 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 head vertical axis and the ground. And can be measured perpendicular to the front surface. The face height is defined by the striking face edge and can be about 33 mm to about 71 mm measured parallel to the loft surface. The CG performance ratio of (a) 76.2 mm minus the face height and (b) 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 head CG height 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 can include a weight structure disposed in the vicinity of the sole part and the rear part of the head body.

  In one embodiment, a method for providing a golf club head includes 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. it can. The hosel structure has an inner diameter for receiving a golf club shaft, and the inner diameter has a hosel axis. The method may also include coupling the face portion to the head front portion, the face portion having a hitting face center point, a hitting face edge, and a hitting height limited by the hitting face edge. With a face. The method further includes setting at least one of a first performance characteristic of the golf club head or a 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 centroid of the golf club head and is perpendicular to the ground, and the head horizontal axis extends through the head centroid and the head vertical. Orthogonal to the axis. The loft surface of the golf club head can touch the hitting face center point. The front surface of the golf club head can extend parallel to the hosel axis through the strike face center point. The head depth surface can extend through the striking face center point parallel to the head horizontal axis and perpendicular to the loft surface. The CG height axis can extend through the center of gravity of the head and can intersect the head depth plane perpendicularly at the first intersection. The head CG height of the head centroid can be measured between the head centroid and the first intersection along the CG height axis. The head CG depth of the head center of gravity 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 head vertical axis and the ground. And can be measured perpendicular to the front surface. The face height can be about 33 mm to about 71 mm, measured parallel to the loft surface. The first performance characteristic may have a head CG height of about 5.08 mm or less. The second performance characteristic may have a CG performance ratio of 0.56 or less 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 may be found in the drawings, the claims and / or the description.

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

  In the present embodiment, the head main body 1100 and the face portion 1200 are composed of different pieces of material joined together by, for example, a welding method. However, in other examples, the face portion 1200 includes 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 hitting face 1210, a face part 1200, and a head front part 1110. In some embodiments, the head front surface 1160 can also include at least a portion of the head sole portion 1130. In the same or different embodiments, the head front portion 1110 can 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 hitting face center point 1211 is arranged at the geometric center of the hitting face edge 1212 in this example, and is arranged at the midpoint of the face height 1213. In the same or other examples, the striking face center point 1211 can be centered with respect to the designed impact area 1250, which can be defined by the extent of the groove 1259 of the striking face 1210. it can. As another approach, the striking face center point 1211 can be placed in accordance with regulations of a golf management organization such as the United States Golf Association (USGA). For example, the hitting face center point 1211 is a procedure for measuring the flexibility of a golf club head according to USGA (“Flexibility Procedure”) (USGA-TPX3004, Rev. 1.0.0, May 1, 2008). To be determined according to section 6.1 (available at http://www.usga.org/equipment/testing/protocols/Procedure-For-Measuring-The-Flexibility-Of-A-Golf-Club-Head/). it can.

  The golf club head 1000 includes a loft surface 2270 (FIG. 2), and this surface is at least in contact with the hitting face center point 1211 of the hitting 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, and in this or other examples from about 33 millimeters (mm) to It can be about 71 mm.

  The striking face edge 1212 includes a striking face upper end 1215 and a striking face lower end 1216 that define a face height 1213, but the entire face portion 1200 need not be bounded. 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 portion 1200. In some examples, the striking face 1210 can have a roll radius and / or a bulge radius. The striking face edge 1212 can be defined along a transition boundary where the contour of the face portion 1200 is away from the roll radius and / or bulge radius of the striking face 1210. For example, FIG. 2 includes an enlarged view of a portion of the upper transition boundary of the golf club head 1000, highlighting a vertical roll radius 2170 extending along the striking face 1210, while the head front surface 1160 is a vertical roll. It shows how the upper end 1215 of the striking face is located at the upper transition boundary, which is a place away from the radius 2170. FIG. 2 also includes an enlarged view of a portion of the lower transition boundary of the golf club head 1000, highlighting a vertical roll radius 2170 that extends vertically along the striking face 1210, while the head front surface 1160 is a vertical roll. It shows how the hitting face lower end 1216 is located at the lower transition boundary, which is a place away from the radius 2170.

  In the same or other embodiments, the striking face edge 1212 can be defined relative to the end of the striking plate that includes the striking face. For example, the face portion 1200 includes a striking plate 1220. In this case, the striking face 1210 forms an external surface of the striking plate 1220, and the striking plate 1220 is formed on 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 portion defined in this way includes the upper and lower portions of the striking face edge portion 1212, and the striking face upper end 1215 and the striking face lower end 1216 are located in these portions, respectively, and the face height 1213 is defined. Define. Other examples are possible besides the above, in which 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 shaft 2320 of CG height. In the drawing, 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 the head depth surface at the intersection 2801. Crosses 2310 vertically.

  The head center of gravity 2500 has a CG height 2520 and a CG depth 2510, which position the head center of gravity 2500 relative 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 CG height axis 2320. The CG depth 2510 can be measured parallel to the ground 1010 and between the intersection 2802 and the intersection 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 includes a golf club. When the head 1000 is at 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 do.

  The head body 1100 of the golf club head 1000 also includes a hosel structure 1217 (FIG. 1) and a hosel shaft 1710 that extends along the center of the inner diameter portion 1217 of the hosel structure. In this example, the hosel coupling mechanism of the golf club head 1000 includes a hosel structure 1217 and a shaft sleeve 1411. With this mechanism, the shaft sleeve 1411 can be coupled to the end of the golf shaft 1410. The shaft sleeve 1411 can be coupled 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 secured to the hosel structure 1217.

  A 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 seeks to be optimized by this design is a face height and / or face size characteristic. Maximizing the face height and / or face size of a golf club head can provide several advantages. These advantages include an increased impact area with the object at the striking face, resulting in a more tolerable club head. With such a club head, the striking face is off the center point. Good results are also obtained for a hit golf shot. In addition, when the height of the hitting face is made higher and / or the size thereof is made larger, energy can be more appropriately transferred to the golf ball at the time of impact with the golf ball. Therefore, the golf club head characteristic time or “spring effect” is increased and golf shots of longer distances can be realized. In some examples, to achieve a characteristic time limit determined by the golf management body (such as a characteristic time limit of 239 microseconds (μs) determined by the USGA's own “Flexibility Procedure”). The height or size of the striking face may be increased.

  However, if the face height and / or face size is increased without any consideration, the performance of other areas (such as golf ball launch angle upon impact with the hitting face, ball spin and / or ball speed) will be adversely affected. there is a possibility. For example, when the face height and / or face size is increased, the CG depth between the center of gravity of the golf club head and the hitting face center point may become shallow because the center of gravity moves forward. As a result, the dynamic loft of the golf club head decreases, and the launch angle of the golf ball decreases. 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 and lift the center of gravity away from the golf club head sole. 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 that occurs at the time of impact. The flying distance will be shorter.

Considering the above, it is necessary to balance the face height or face size of the golf club head with respect to the position of the center of gravity. With respect to the golf club head 1000, the striking face 1210 is enlarged to increase the face size and / or the face height 1213, thereby increasing the impact area and moving more energy to the golf ball 2900. 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 increase the impact area and move more energy upon impact with the golf ball 2900. Is possible. In some examples, the area of the hitting face 1210 (including the increased face area) can be between about 23.6 square centimeters (cm ² ) and 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 the CG height 2520 raised toward the head top 1120 and / or the head depth plane. It restricts being too far away from 2310. For example, the golf club head 1000 has a first optimization characteristic that satisfies the following relationship 1.
| CG height ₂₅₂₀ | ≦ 5.08 mm [Relation 1]

  An example in which the CG height 2520 can be from about 0 mm to the limit value of 5.08 mm in relation 1 is also possible. In other examples, 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 characteristic can reduce the backspin of the golf ball 2900 via the gear effect between the striking face 1210 and the golf ball 2900 to obtain good performance. . In FIG. 2, the head center of gravity 2500 is shown below the depth surface 2310 and the CG height 2520 is shown extending between the depth surface 2310 and the head sole portion 1130. However, an embodiment in which the head center of gravity 2500 can exist above the depth surface 2310 such that the CG height 2520 extends between the depth surface 2310 and the head top 1120 while still satisfying the above relationship 1 is also possible. Is possible.

In addition, in consideration of further increasing the face size and / or face height 1213 as described above, the golf club head 1000 still restricts the center of gravity 2500 from moving toward the striking face 1212 and This prevents the CG depth 2510 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 in accordance with the relationship 2 so that the second optimization characteristic is maintained at 0.56 or less, whereby the CG depth 2510 is hit. The amount that can be shallow toward the face 1210 is limited. An example in which the CG depth 2510 can be about 25 mm to about 102 mm is also possible. In the same or other examples, the CG depth 2510 can be at least about 39 mm. In some implementations, the second optimization characteristic 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 during impact.

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

  The golf club head 1000 may also have a third optimization characteristic regarding its head volume (HV) 2600. In this example, 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, and thus the head capacity is 420 or more. For example, since the head main body 1000 can have a head capacity of 420 cc, the size of the head capacity is 420. As another example, since the golf club head 1000 can have a head capacity of 460 cc, the magnitude of the head capacity is 460. Golf club head 1000 may have a head capacity of up to about 470 cc and / or have a total head weight of about 185 grams to about 225 grams in some embodiments. 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 head capacity 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 2600 can be increased, for example, to adjust the moment of inertia (MOI) of the golf club head 1000. However, increasing the head capacity indefinitely can have undesirable effects on other characteristics of the golf club head. For example, increasing the head capacity 2600 increases toward the head front 1110, toward the head top 1120, toward other undesirable directions, and / or away from the desired center of gravity location or one or more directions. In addition, there is a possibility of moving the head center of gravity 2500, thereby impairing the performance of the golf club head 1000. Such undesirable changes in the position of the center of gravity can adversely affect one or more characteristics (such as launch speed, launch angle, gear effect, backspin and / or shot distance) of the golf club head. Therefore, by setting the third optimization characteristic used to balance the relationship between the head capacity 2600 and the position of the head center of gravity 2500, a desirable and balanced attribute 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 to allow the golf club head 1000 to exhibit the third optimization characteristic, thereby reducing the head capacity 2600. By increasing the moment of inertia, more energy can be transferred to the golf ball 2900 during the golf impact of the hitting 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 toward the head front 1110 due to increased head capacity 2600. Therefore, at the time of golf impact, at least one of the dynamic loft of the hitting 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 toward the head top 1120 as a result of increasing the head capacity 2600, thereby The backspin of the golf ball 2900 is reduced by the gear effect between the hitting face 1210 and the golf ball 2900 at the time of golf impact.

  In view of the above, in order to achieve the third optimization characteristic according to relation 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. Note that in some embodiments, the CG height 2520 is characterized as an absolute value, taking into account that the head centroid 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 that can define the third optimization characteristic relative to other lower limits are possible. For example, in some implementations, the third optimization characteristic can include a lower limit of at least 435 or 445. The position of the head centroid 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 description, the head depth length 2312 is a dimension from the hitting 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 description, the axial length 2322 of the CG height is the dimension from the intersection of the outer surface of the head upper portion 1120 and the shaft 2320 of the CG height to the intersection of the outer surface of the head sole portion 1130 and the shaft 2320 of the CG height.

  The golf club head 1000 may also include a fourth optimization characteristic related to the balance of the hosel MOI 1711 (FIG. 1) and the horizontal MOI 1811 (FIG. 1). The hosel MOI 1711 is defined around the hosel axis 1710. A 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 relative to the ground 1010.

  In some examples, increasing the horizontal MOI 1811 causes the golf club head 1000 about the head horizontal axis 1810 to move when the striking face 1210 is off center and hits the golf ball 2600 towards the head top 1120 or head sole 1130. Rotation can be limited. Thereby, the tolerance of the golf club head 1000 is improved with respect to the above-described damage to the top or bottom. For example, weights may be added or repositioned near the head front 1110 and / or the head rear 2160 to increase the horizontal MOI 1811. In the same or other examples, the golf club head 1000 can be extended toward the head front portion 1110 and / or the head rear portion 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, if adjustments are made without limitation to increase the horizontal MOI 1811, the hosel MOI 1711 may increase excessively if not properly balanced. This increases the resistance to rotate the golf club head 1000 about the hosel axis 1710, and for some people to properly position the golf club head 1000 during impact with the golf ball 2600 (or “square” It is difficult to “rotate” the golf club during the 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, due to this gear effect, the spin of the golf ball 2600 is somewhat corrected at an off-center impact.

  In order to reduce hosel MOI 1711, golf club head 1000 can be designed to limit the distance between hosel shaft 1710 and any additional or selective mass relative to golf club head 1000. The above approach to reducing hosel MOI 1711 may conflict with some of the above approaches to increasing horizontal MOI 1811 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 viewpoint, the fourth optimization characteristic of the golf club head 1000 is to control the relationship between the horizontal MOI 1811 and the hosel MOI 1711 so that the following relationship 4 is satisfied.
(Horizontal MOI ₁₈₁₁ ) ≧ 39% (Hosel MOI ₁₇₁₁ ) [Relationship 4]

An example is possible that allows the golf club head 1000 to be configured such that its fourth optimization characteristic can exceed the requirements of relationship 4. As an example, in some embodiments, the fourth optimized 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. It can be constituted so that. In this example, the horizontal MOI 1811 is about 3740 grams square centimeter (g · cm ² ), but examples are possible where this can range from 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 may also include a fifth optimization characteristic related to the balance between the hosel MOI 1711 and the vertical MOI 1611 (FIG. 1). A vertical MOI 1611 is defined around the head vertical axis 1610. This axis extends through the head center of gravity 2500 from the head top 1120 to the head sole portion 1130 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, increasing the vertical MOI 1611 causes the striking face 1210 to be off center and close to the head heel 1140 (or close to the head toe 1150) and hit the golf ball 2600 around the head vertical axis 1610. The rotation of the golf club head 1000 can be limited. Thereby, the tolerance of the golf club head 1000 is improved with respect to the hitting on the heel side or the toe side as described above. For example, weights can be added or repositioned near the head heel portion 1140 and / or the head toe portion 1150 to increase the vertical MOI 1611. In the same or other examples, the golf club head can be extended toward 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, adjusting without limitation to increase the vertical MOI 1611 may cause the hosel MOI 1711 to increase excessively if not properly balanced, thereby reducing the golf club head 1000 as described above. Resistance to rotate around hosel axis 1710 increases. In addition, some approaches for reducing hosel MOI 1711 may contradict some of the above approaches for increasing vertical MOI 1611 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 viewpoint, the fifth optimization characteristic of the golf club head 1000 is such that the relationship between the vertical MOI 1611 and the hosel MOI 1711 is controlled to satisfy the following relationship 5.
(Vertical MOI ₁₆₁₁ ) ≧ 59% (Hosel MOI ₁₇₁₁ ) [Relationship 5]

  An example is possible that allows the golf club head 1000 to be configured such that its fifth optimization characteristic can exceed the requirements of relationship 5. As an example, in some implementations, the fifth optimized 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. It can be comprised so that it may become. 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 relationship 5.

  In some embodiments, the first, second, third, fourth and / or first described above may be adjusted by adjusting the mass distribution of the golf club head 1000 or the relationship between the various elements of the golf club head 1000. The golf club head 1000 can be configured to exhibit 5 optimization characteristics. For this purpose, as can be understood from FIGS. 2 to 3, the golf club head 1000 can include a weight structure 2700 disposed in the vicinity of the head sole portion 1130 and the head rear portion 2160. In some configurations, the weight structure 2700 can be designed and / or arranged to meet the constraints imposed by relationship 1, relationship 2, relationship 3, relationship 4 and / or relationship 5, Thus, the face height or face size of the hitting face 1210, the head capacity 2600 of the golf club head 1000, 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 positioned relative to the watch face 3500, but the watch face can be aligned with respect to the striking face 1210. For example, the watch face 3500 includes a 12 o'clock line 3512, which is aligned with the hitting face center point 1211 of the present embodiment. The 12 o'clock line 3512 is orthogonal to the front intersection line 3271, which is defined by the intersection of the loft surface 2270 (FIGS. 2-3) and the ground 1010 (FIGS. 1-2). The clock board 3500 is arranged at the center along the 12 o'clock line 3512 at the midpoint between the front end of the front portion 1110 and the rear end of the rear portion 2160. In the same or other examples, the watch center point 3515 can be positioned so as to be close to the geometric center of the golf club head 1000. The watch face 3500 also includes a three hour line 3503 extending toward the head heel part 1140 and a nine hour line 3509 extending toward the head toe part 1150.

  In this embodiment, the weight edge portion 2705 of the weight structure 2700 is at least partially restricted between the 4 o'clock line 3504 and the 8 o'clock line 3508 of the timepiece 3500, and is disposed near the head rear portion 2160. In addition, a weight center 2750 is arranged between the 5 o'clock line 3505 and the 7 o'clock line 3507. In the example of the watch panel, the weight edge 2705 is completely limited 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 larger area. For example, in the above example, the weight edge 2705 of the weight structure 2700 is at least partially restricted between the 4 o'clock line 3504 and the 9 o'clock line 3509 of the timepiece 3500 and can be disposed near the head rear part 2160. With this, 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 toward the heel portion 1140. For example, the weight edge 2705 and / or the weight center 2750 can be moved toward the 4 o'clock line 3504 rather than toward the 9 o'clock line 3509. When the weight structure 2700 is biased in the vicinity of the head heel portion 1140, the distance between the hosel shaft 1710 and the weight structure 2700 is limited, so that the hosel MOI 1711 around the hosel shaft 1710 can be reduced. Thereby, the golf club head 1000 can be more easily rotated 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, since the weight structure 2700 protrudes from the outer contour of the head sole portion 1130, the weight structure 2700 is at least partially outside, whereby the head center of gravity 2500 can be adjusted more greatly.

  The weight structure 2700 can include a removable weight 2790 in the same or other examples. 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. The position of the head center of gravity 2500 can be adjusted by replacing this weight with one or more other similar weights. In the same or other examples, 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 located relative to the ground 1010 and the weight center vertical distance axis 2340, which extends between the weight center 2750 and the ground 1010. The weight center vertical distance axis 2340 is perpendicular to the ground 1010 when the golf club head 1000 is in the address position relative to the ground. Accordingly, 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 parallel to the ground 1010 between the intersection 2802 and the intersection 2804. In this example, the intersection 2804 is defined by the intersection between the ground 1010 and the weight center vertical distance axis 2340 when the golf club head 1000 is in the address position. In the same or other embodiments, the weight center 2750 can be positioned such 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.

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

  In some implementations, the relationship or ratio between head center of gravity 2500 and weight center 2750 can be configured to satisfy one or more of relationship 1, relationship 2, relationship 3, relationship 4 and / or relationship 5. is there. For example, the vertical distance ratio determined by the ratio of the weight center vertical distance 2730 to the head CG vertical distance 2530 is larger than 0.44, and the effect of maintaining the head center of gravity 2500 closer to the head sole portion 1130 can be obtained. it can. In another example, the depth ratio defined 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 toward the head front 1110. be able to. Some embodiments are possible where 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 center depth 2710 can be greater than about 99.7 mm.

  FIG. 4 shows a flowchart of a method 4000 that can be used to provide, form and / or manufacture a golf club head according to the present disclosure. In some examples, the golf club head may be similar to the golf club head 1000 (FIGS. 1-3) presented above.

  The method 4000 includes a block 4100 that provides a head body of a golf club head that includes 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).

  The block 4200 of the method 4000 includes coupling the face portion to the head front portion, the head front portion including a striking face having an increased face size. In some examples, the face portion can be similar to the face portion 1200 (FIGS. 1-2), which includes a striking face 1210 having 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.

  The method 4000 can include a block 4300 that configures the golf club head to have a first optimization characteristic, where the CG height between the golf club head center of gravity and the golf club head depth plane is , About 0 mm to about 5.08 mm (or 0.200 inches). In some examples, the first optimization characteristic may be similar to that described above with respect to relationship 1 that balances the golf club head face height or face size with respect to the center of gravity. In some examples, the CG height may be similar to the CG height 2520 (FIG. 2), the center of gravity may be similar to the head center of gravity 2500 (FIG. 2), and the head depth surface may be the head depth surface 2310 (FIG. It can be the same as 2).

  Embodiments where the method 4000 can include a block 4400 that configures the golf club head to have a second optimization characteristic are also possible, in which case (a) 76.2 mm (or about 3.0 inches). ) Minus the face height and (b) the ratio of the CG depth between the hitting face center point and the center of gravity is less than 0.56. In some examples, the second optimization characteristic may be similar to that described above with respect to relationship 2 that balances the face height or face size of the golf club head against the depth 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 configures the golf club head to have a third optimization characteristic, where the head capacity magnitude includes CG depth and CG height. The ratio is 425 or more. In some implementations, the third optimization characteristic may be similar to that described above with respect to relationship 3 that balances head capacity with respect to the center of gravity position. 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 is CG. It can be the same as the height 2520.

  The method 4000 can include the method 4600 in some embodiments of configuring a golf club head to have a fourth optimization characteristic, where the horizontal moment of inertia of the golf club head is the hosel moment of inertia. 39% or more. In some implementations, the fourth optimization characteristic may be similar to that described above with respect to relationship 4 that balances 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 may be similar to that described above with respect to the horizontal MOI 1811. In addition, the magnitude of the hosel moment of inertia can be similar to that described above with respect to the hosel MOI 1711. Examples where 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) are also possible.

  The block 4700 of the method 4000 may 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 determined by its hosel inertia. It is 59% or more of the moment. In some implementations, the fifth optimization characteristic may be similar to that described above with respect to relationship 5 that balances 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 may be similar to that described above with respect to the vertical MOI 1611. In addition, the magnitude of the hosel moment of inertia can be similar to that described above with respect to the hosel MOI 1711. Examples are possible where the vertical moment of inertia and / or the hosel moment of inertia can be balanced against other features (such as the horizontal moment of inertia of block 4500).

  In this example, the method 4000 also includes a block 4800 that provides a mass relocation mechanism to adjust the center of gravity of the golf club head. In some examples, the mass relocation mechanism can be configured such that the golf club head can achieve the requirements for block 4300, block 4400, block 4500, block 4600 and / or block 4700 of method 4000. The mass relocation mechanism can include a weight structure, such as weight structure 2700 (FIGS. 2-3), so that, if desired, a center of gravity near the sole and / or rear of the golf club head. The position can be adjusted. In the same or other embodiments, the mass relocation mechanism can reduce the thickness of the face portion of the golf club head, at this time, if necessary, at the back of the striking face and / or the golf club. One or more reinforcing structures may be used to reinforce the face portion of the golf club head, such as at the joint between the head face portion and the head body.

  In some examples, one or more of the different blocks of method 4000 can be combined into one block or performed simultaneously, and / or the order of each such block can be changed. For example, in some embodiments (for example, when at least a part of the face portion and the head body is made of a single piece of material), the block 4100 and the block 4200 may be combined. In the same or other examples, block 4800 may be combined with one or more of block 4100, block 4300, block 4400, block 4500, block 4600, and / or block 4700, using the mass relocation mechanism of block 4800, etc. Thus, it may be achieved simultaneously by adjusting the center of gravity, face height, face size, head capacity and / or one or more moments of inertia of the golf club head. In the same or other examples, a portion of each block of method 4000 can be subdivided into several sub-blocks. For example, the block 4100 can be subdivided into several sub-blocks that provide different portions of the head body of the golf club head. Examples where method 4000 may include additional blocks or different blocks are possible. As an example, the method 4000 may include another block that provides or couples the golf club shaft to the head body of the block 4100. In addition, the method 4100 may include only a part of each block described above. For example, one or more of block 4300, block 4400, block 4500, block 4600 and / or block 4700 may be optional in some implementations and / or block 4300, block 4400, block 4500, block 4600 and / or Alternatively, block 4800 may be omitted if not necessary to achieve the requirements of block 4700. Other variations on the method 4000 can be implemented without departing from the scope of the present disclosure.

  Although the present specification has described golf club heads and related methods with optimized characteristics with reference to particular embodiments, various modifications can be made without departing from the concept or scope of the present disclosure. Is possible. For example, while the above example can be described in the context of a driver-type golf club, the devices, methods, and articles of manufacture described herein can be used for other types of golf clubs (fairway wood type). The present invention may be applicable to a golf club, a hybrid golf club, an iron golf club, a wedge golf club, or a putter golf club. Alternatively, the devices, methods and articles of manufacture described herein may be applicable to other types of sports equipment (hockey sticks, tennis rackets, fishing rods, ski stocks, etc.).

  Other examples of these changes and others have been given in the above description. Other permutations of various embodiments having one or more features of various features are contemplated as well. Accordingly, the specification, claims, and drawings herein are intended to be illustrative of the scope of the present disclosure and are not intended to be limiting. It is intended that the scope of this application should be limited only to the extent required by the appended claims.

  The golf club heads and associated methods with optimization characteristics described herein may be implemented in various embodiments, and the foregoing discussion regarding some of these embodiments is not necessarily all possible embodiments. It does not represent a 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 to the embodiments claimed in that particular claim. As a result, the replacement of one or more claimed elements is a reconfiguration rather than a correction. In addition, benefits, other advantages, and solutions to problems have been described with respect to particular embodiments. However, the benefit, advantage, solution to the problem, and any one or more elements that may cause or make more obvious any benefit, advantage, or solution, any of the claims Or to interpret as a critical, necessary, or essential feature or element for all, unless such benefit, advantage, solution, or element is explicitly stated in such claim Should not.

  Golf rules may change from time to time (for example, by golf standards organizations and / or golf management organizations such as the United States Golf Association (USGA), the UK and the Golf Club of St. Andrews (R & A), etc.) New rules may be adopted, or old rules may be abolished or changed), and golf equipment relating to the devices, methods and articles of manufacture described herein may, at any particular point in time, The golf rules may or may not be met. Accordingly, golf equipment relating to the devices, methods and articles of manufacture described herein may be advertised, offered for sale, and / or sold as conforming or non-conforming golf equipment. The apparatus, methods and articles of manufacture described herein are not limited in this regard.

  Further, the embodiments and limitations disclosed herein are not explicitly claimed in (1) the claims, and (2) claims under the doctrine of equivalents. No explicit elements and / or limitations equivalent to, or potential equivalents of, are offered for public use under the public principles of publication.

Claims (23)

A golf club head,
A head main body including a hosel structure having 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 an inner diameter portion for receiving a golf club shaft, wherein the inner diameter portion has a hosel axis. When,
A striking face at the front of the head and having a striking face center point;
A head capacity measured in cubic centimeters (cc), wherein the head capacity is greater than 420;
The center of gravity of the head,
With optimization characteristics,
When the golf club head is in an address position relative to the ground, a head vertical axis extends through the head center of gravity and is perpendicular to the ground, and a 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 hitting face center point,
The front surface of the golf club head extends through the striking face center point and is parallel to the hosel axis;
A head depth surface extends through the hitting face center point parallel to the head horizontal axis and perpendicular to the loft surface,
A center of gravity (CG) height axis extends through the head center of gravity and intersects the head depth plane perpendicularly at a 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 head 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 head vertical axis and the ground. And measured perpendicular to the front surface,
The optimization characteristic is determined by adding (a) the size of the head capacity to (b) the ratio of the head CG depth divided by the absolute value of the head CG height;
A golf club head, wherein the optimization characteristic is 425 or more.   The golf club head according to claim 1, wherein an absolute value of the head CG height is 2.54 mm or less, and the head CG depth is 40.64 mm or more.   The golf club head according to claim 1, wherein an absolute value of the head CG height is 2.54 mm or less.   The golf club head according to claim 1, wherein the head CG depth is 40.64 mm or more.   The golf club head according to claim 1, wherein the optimization characteristic is 435 or more. The head depth surface has a head depth length of a dimension from the hitting face center point to the intersection of the outer surface of the head rear portion and the depth surface;
The golf club head according to any one of claims 1 to 5, wherein the head CG depth has about 25% to about 80% of the head depth length. The CG height axis has an axial length of CG height having a dimension from an intersection of the head upper portion and the CG height axis to an intersection of the outer surface of the head sole portion and the CG height axis,
The golf club head according to any one of claims 1 to 6, wherein the head CG height has about 0% to about 13% of an axial length of the CG height. 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 golf club head has a head capacity of about 420 cc to about 470 cc,
8. The golf club head of claim 1, wherein the golf club head has a head weight of about 185 grams to about 225 grams. The head body includes a weight structure disposed in the vicinity of the head sole portion and the head rear portion,
The weight structure is
Increasing the head capacity, increasing the moment of inertia, and moving more energy to the golf ball during a golf impact between the hitting face and the golf ball,
The increased head capacity restricts the head CG depth from becoming shallower toward the front part of the head, whereby at least one of the dynamic loft of the hitting face or the launch angle of the golf ball during the golf impact Improve
As a result of the increased head capacity, the head CG height is restricted from rising toward the top of the head, and thus the golf effect is caused by the gear effect between the striking face and the golf ball during the golf impact. The golf club head according to claim 1, wherein the backspin of the ball is reduced. The head body includes a weight structure disposed in the vicinity of the head sole portion and the head rear portion,
The weight structure protrudes at least partially from the outer contour of the head sole portion;
9. The golf club head of claim 1, wherein the weight structure has a weight mass of about 2 grams to about 50 grams and a weight volume of about 1 cc to about 30 cc. The head body includes a weight structure disposed in the vicinity of the head sole portion and the head rear portion,
9. The golf club head according to claim 1, wherein a weight distance between the center of gravity of the head and a weight center of the weight structure is about 25 mm to about 102 mm. The head body includes a weight structure disposed in the vicinity of the head sole portion and the head rear portion,
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 hitting face center point, and the loft surface and the Orthogonal to the front line of intersection between the ground,
The timepiece is arranged at the center along the 12 o'clock line at a midpoint between the front end of the head front portion and the rear end of the head rear portion,
The 3 o'clock line extends toward the head heel part,
The 9 o'clock line extends toward the head toe part,
The edge of the weight structure is limited between the 4 o'clock line and the 9 o'clock line,
9. The golf club head according to claim 1, wherein a center of gravity of the weight structure is disposed between the 5 o'clock line and the 8 o'clock line. The head main body has a weight center, and includes a weight structure disposed in the vicinity of the head sole portion and the head rear portion,
The weight center vertical distance axis 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 head center of gravity and the ground along the head vertical axis,
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,
9. The golf club head according to claim 1, wherein a vertical distance ratio determined by dividing the weight center vertical distance by the head CG vertical distance is larger than 0.44. 10. The head main body has a weight center, and includes a weight structure disposed in the vicinity of the head sole portion and the head rear portion,
The weight center vertical distance axis 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 point at the intersection between the front surface and the ground, and the fourth intersection point at the intersection of the weight center vertical distance and the ground, Measured parallel to the ground,
The golf club head according to any one of claims 1 to 8, wherein a depth ratio determined by dividing the weight center depth by the head CG depth is less than 2.54.   The golf club head according to claim 1, wherein the head center of gravity is disposed between the head depth surface and the head upper portion.   The golf club head according to claim 1, wherein the center of gravity of the head is disposed between the head depth surface and the head sole portion. The head body is composed of a driver-type body,
The golf club head according to claim 1, wherein the center of gravity of the head is disposed between the head depth surface and the head sole portion. A golf club head,
A head main body including a hosel structure having 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 an inner diameter portion for receiving a golf club shaft, wherein the inner diameter portion has a hosel axis. When,
A striking face at the front of the head and having a striking face center point;
Head center of gravity
When the golf club head is in an address position relative to the ground, a head vertical axis extends through the head center of gravity and is perpendicular to the ground, and a 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 hitting face center point,
The front surface of the golf club head extends through the striking face center point and is parallel to the hosel axis;
A head depth surface extends through the hitting face center point parallel to the head horizontal axis and perpendicular to the loft surface,
A center of gravity (CG) height axis extends through the head center of gravity and intersects the head depth plane perpendicularly at a 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 head 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 head vertical axis and the ground. And measured perpendicular to the front surface,
The absolute value of the head CG height is 2.54 mm or less,
A golf club head, wherein the head CG depth is 40.64 mm or more. A head capacity measured in cubic centimeters (cc), wherein the head capacity is greater than 420;
(A) an optimization characteristic determined by adding the magnitude of the head capacity to (b) a ratio of the head CG depth to the head CG height; and
The head body is composed of a driver-type body,
The golf club head of claim 18, wherein the optimization characteristic is 435 or greater.   The golf club head according to claim 18, wherein the head center of gravity is disposed between the head depth surface and the head upper portion. A golf club head providing method comprising:
A head main body including a hosel structure having 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 an inner diameter portion for receiving a golf club shaft, wherein the inner diameter portion has a hosel axis. Providing,
Connecting a striking face to the front of the head, and setting optimization characteristics of the golf club head,
The hitting face has a hitting face center point;
The head capacity of the golf club head is measured in cubic centimeters (cc) and the head capacity is greater than 420,
When the golf club head is in an address position relative to the ground, a head vertical axis extends through the head center of gravity and is perpendicular to the ground, and a 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 hitting face center point,
A front surface of the golf club head extends parallel to the hosel axis through the hitting face center point;
A head depth surface extends through the hitting face center point parallel to the head horizontal axis and perpendicular to the loft surface,
A center of gravity (CG) height axis extends through the head center of gravity and intersects the head depth plane perpendicularly at a 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 head 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 head vertical axis and the ground. And measured perpendicular to the front surface,
The optimization characteristic is set by adding (a) the size of the head capacity to (b) the ratio of the head CG depth divided by the absolute value of the head CG height;
The method, wherein the optimization characteristic is 425 or more. The head body is composed of a driver-type body,
The absolute value of the head CG height is 2.54 mm or less,
The method according to claim 21, wherein the head CG depth is 40.64 mm or more. The optimization characteristic is 435 or more;
23. A method according to claim 21 or claim 22, wherein the head center of gravity is located between the head depth surface and the head top.

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