KR20230136712A - Golf clubs with hosel inserts and related methods - Google Patents

Abstract

Embodiments of golf coupling mechanisms are provided herein. Other examples and related methods are also disclosed herein.

Description

Golf clubs with hosel inserts and related methods {GOLF CLUBS WITH HOSEL INSERTS AND RELATED METHODS}

Cross-reference to related applications

This application claims the benefit of U.S. Provisional Patent Application No. 62/107,240, filed on January 23, 2015, and U.S. Provisional Patent Application No. 61/254,081, filed on November 11, 2015, and filed on May 20, 2014. No. 14/282,786 is a continuation-in-part of filed U.S. Patent Application No. 14/282,786, which includes (i) U.S. Patent Application No. 13/795,653, filed March 12, 2013; (ii) U.S. Patent Application No. 13/429,319, filed March 24, 2012; (iii) U.S. Patent Application No. 13/468,663, filed May 10, 2012; (iv) U.S. Patent Application No. 13/468,675, filed May 10, 2012; and (v) is a continuation-in-part of U.S. Patent Application Serial No. 13/735,123, filed January 7, 2013.

U.S. Patent Application No. 13/429,319 claims the benefit of U.S. Provisional Patent Application No. 61/590,232, filed January 24, 2012, and U.S. Provisional Patent Application No. 61/529,880, filed August 31, 2011. Additionally, US Patent Application No. 13/468,663 and US Patent Application Serial No. 13/468,675 are each a continuation-in-part of US Patent Application Serial No. 13/429,319. Likewise, US Patent Application Serial No. 13/468,677 is a continuation of US Patent Application Serial No. 13/429,319.

Meanwhile, U.S. Patent Application No. 13/735,123 is U.S. Patent Application No. 13/468,663 filed on May 10, 2012, U.S. Patent Application No. 13/468,675 filed on May 10, 2012, and U.S. Patent Application No. 13/468,675 filed on May 10, 2012. This is a partial continuation of U.S. Patent Application No. 13/468,677, filed on the 10th of February.

U.S. Provisional Patent Application No. 62/107,240, U.S. Provisional Patent Application No. 62/254,081, U.S. Patent Application No. 14/282,786, U.S. Patent Application No. 13/795,653, U.S. Patent Application No. 13/429,319, U.S. Patent Application No. 13 /468,663, US Patent Application No. 13/468,675, US Patent Application No. 13/735,123, US Patent Application No. 13/468,677, US Provisional Patent Application No. 61/590,232, and US Provisional Patent Application No. 61/529,880. Each is incorporated herein by reference in its entirety.

Technology field

This disclosure relates generally to sports equipment, and more specifically to golf coupling mechanisms and related methods.

Many sports, such as golf, require equipment with features that can be selected or customized to suit individual characteristics or preferences. For example, the recommended type of club shaft, type of club head, and/or loft angle or lie angle of the club head may vary based on individual characteristics such as skill, age, or height. However, once assembled, the golf club typically has a fixed, unchangeable coupling mechanism between the golf club shaft and the golf club head. Therefore, when determining appropriate equipment for an individual, one must utilize an unnecessarily large number of golf clubs with such fixed coupling mechanisms to test different combinations of club shaft, club head, loft angle and/or lie angle. . Moreover, even if an individual's characteristics or preferences change, golf equipment cannot be adjusted to cope with those changes. Adjustable coupling mechanisms can be configured to provide such flexibility in variably setting different features of a golf club, but introduce instability that results in a lack of cohesion or stress concentration in the golf club head and golf club shaft coupling. can do. Considering the above, further advancements in golf coupling mechanisms and related methods will improve the utility and adjustability features of golf clubs.

The present disclosure may be better understood by reading the following detailed description of embodiments taken in conjunction with the accompanying drawings.
1 illustrates a front perspective view of a golf club with a golf coupling mechanism according to an example of the present disclosure.
Figure 2 illustrates a top perspective view of a golf club with the golf coupling mechanism of Figure 1;
Figure 3 illustrates a cross-sectional view of a golf club head along section line III-III in Figure 2, showing a golf coupling mechanism with a shaft sleeve inserted within the shaft receptacle.
Figure 4 illustrates a cross-sectional view of the golf club head and golf coupling mechanism along cross-section line IV-IV in Figure 2;
Figure 5 illustrates a side view of the shaft sleeve separated from the golf club head.
Figure 6 illustrates a cross-sectional view of the shaft sleeve along section line VI-VI in Figure 5;
Figure 7 illustrates a cross-sectional view of the shaft sleeve along section line VII-VII in Figure 5;
Figure 8 illustrates a top view of the golf club head of Figure 1 with the shaft sleeve removed, showing the shaft receptacle from above.
Figure 9 illustrates a side cross-sectional view of the golf club head of Figure 1 along section III-III of Figure 2, with the shaft sleeve removed.
Figure 10 illustrates a side view of a portion of a sleeve coupler set of a shaft sleeve.
11 illustrates a side x-ray view of a portion of a shaft receiver coupler set.
Figure 12 illustrates a side view of a portion of a sleeve coupler set of a shaft sleeve similar to the shaft sleeve of Figures 1-7 and 10;
Figure 12 illustrates a side x-ray view of a portion of a sleeve coupler set of a shaft receptacle similar to the shaft receptacle of Figures 1-4, 8-9 and 11;
Figure 14 illustrates a top cross-sectional view of the golf coupling mechanism in the first configuration with respect to the cross-section line XIV-XIV of Figure 4;
Figure 15 illustrates a top cross-sectional view of the golf coupling mechanism in a second configuration with respect to the cross-section line XIV-XIV of Figure 4;
Figure 16 illustrates a top cross-sectional view of a third configuration golf coupling mechanism with the shaft sleeve removed, taken along the section line XIV-XIV of Figure 4;
FIG. 17 illustrates a top cross-sectional view of a golf coupling mechanism in a fourth configuration with the shaft sleeve removed, taken along the section line XIV-XIV of FIG. 4 ;
18 illustrates a flow diagram of a method that may be used to provide, form, and/or manufacture a golf coupler mechanism in accordance with the present disclosure.
FIG. 19 is a diagram comparing stagnant drag wake areas for each hosel of different golf club heads 1910 and 1920.
Figure 20 is a chart of drag as a function of open face angle versus hosel diameter of the golf club head of Figure 19.
21 illustrates a front perspective view of a golf club with a golf coupling mechanism according to an embodiment.
FIG. 22 illustrates a side view of a shaft sleeve of a golf coupling mechanism of a golf club head separated from the golf club head, according to the embodiment of FIG. 21.
Figure 23 illustrates a cross-sectional view of the shaft sleeve along section line XXIII-XXIII in Figure 22, according to the embodiment of Figure 21;
Figure 24 illustrates a side view of the shaft sleeve body of the shaft sleeve separated from the shaft sleeve cap of the shaft sleeve, according to the embodiment of Figure 21;
Figure 25 illustrates a side view of the shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 21.
Figure 26 illustrates an elevation view of the shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 21.
Figure 27 illustrates a flowchart of a method according to an embodiment.
Figure 28 illustrates example steps for providing a shaft sleeve according to the embodiment of Figure 27.
Figure 29 illustrates a front perspective view of a golf club head with a golf coupling mechanism, according to an embodiment.
Figure 30 illustrates a side view of a shaft sleeve of a golf coupling mechanism of a golf club head separated from the golf club head, according to the embodiment of Figure 29;
Figure 31 illustrates a cross-sectional view of the shaft sleeve along section line XXXIII-XXXIII in Figure 30, according to the embodiment of Figure 29;
Figure 32 illustrates a side view of the shaft sleeve body of the shaft sleeve separated from the shaft sleeve cap of the shaft sleeve, according to the embodiment of Figure 29;
Figure 33A illustrates a side view of the shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 29. Figure 33B illustrates an upper slope of the shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 29.
FIG. 34 illustrates a cross-sectional view of the shaft sleeve cap along cross-section line XLVV-XLVV in FIG. 33B, according to the embodiment of FIG. 29.
Figure 35A illustrates a top view of the shaft sleeve cap separated from the shaft sleeve body, according to the embodiment of Figure 29. FIG. 35B illustrates a top view of a shaft sleeve body separated from a golf head, according to the embodiment of FIG. 29.
Figure 36 illustrates a flowchart of a method according to an embodiment.
Figure 37 illustrates example steps for providing a shaft sleeve according to the embodiment of Figure 35.
For simplicity and clarity of illustration, the drawings illustrate configurations in a general manner, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the disclosure. Additionally, components are not necessarily drawn to scale in the drawings. For example, to facilitate understanding of embodiments of the present invention, the dimensions of some of the components in the drawings may be exaggerated compared to other components. The same reference numerals across different drawings refer to the same elements.
The terms "first", "second", "third", "fourth", etc. used in the detailed description and claims are used to distinguish similar components from each other, and do not necessarily follow a specific order or order of occurrence. It's not meant to be descriptive. The terms used herein may be replaced by other terms under appropriate circumstances to allow the embodiments described herein to be operated, e.g., in a different order than shown in the drawings or in a different manner as described herein. You must understand that it exists. Additionally, the terms "comprise" and "comprising" and any variations thereof are intended to indicate non-exclusive inclusion, thereby defining a process, method, system, article, device or device based on the list of components. Components used in a device are not necessarily limited to those listed above and may include other components not explicitly listed or other components unique to such process, method, system, article, device or device. It may be possible.
The terms “left”, “right”, “front”, “rear”, “top”, “bottom”, “upper”, “lower”, etc., if used in the detailed description and claims, are for descriptive purposes. As such, it is not intended to be used to describe permanent relative positions. As used herein, terms are intended to be appropriate so that embodiments of the devices, methods and/or articles of manufacture described herein may be operated, for example, in orientations other than as shown in the figures or in a manner other than as described herein. It should be understood that other terms may be substituted under circumstances.
The terms "join", "coupled", "coupling", "coupling", etc. should be understood in a broad sense and indicate mechanical or other connection of two or more components. The bonding (which may be mechanical or otherwise) may be effected for any period of time, for example permanently or semi-permanently or only momentarily.
If the words “removably,” “removable,” etc. are not in the vicinity of the word “coupled,” etc., this does not mean that the combination, etc., is removable or non-removable.
As defined herein, when two or more components are made of the same material, they are “unitary.” Additionally, as defined herein, if two or more components are each made of different materials, then those components are “non-integral.”

Some embodiments include a golf club head. The golf club head includes a golf head body, and the golf club head body includes a lower sole, an upper portion opposing the sole portion, a heel portion, a toe portion opposing the heel portion, a rear portion, and a front portion opposing the rear portion. Soul containing; and a hosel. Additionally, the front portion includes a striking surface. The golf club head also includes a shaft sleeve insertable within the hosel and configured to couple the golf club shaft to the hosel. The hosel may include a hosel bore configured to receive the shaft sleeve. Meanwhile, the shaft sleeve includes (i) a shaft bore configured to receive an end of a golf club shaft, (ii) a shaft sleeve body including a sleeve body outer wall and at least one coupler on the sleeve body outer wall, (iii) a shaft sleeve. It includes a shaft sleeve cap configured to be coupled to the body. When the golf club head is in the address position with the shaft sleeve secured within the hosel, the center of gravity of the shaft sleeve can be located at a shaft sleeve CG vertical distance of approximately 46 millimeters or less relative to the bottom of the sole.

In these or other embodiments, the shaft sleeve body can include a midsection, and the shaft sleeve body can include a sleeve body wall, wherein the sleeve body wall has a midsection thickness of approximately 0.020 inches at the midzone. It can be included.

In these or other embodiments, the shaft sleeve body may include a coupler section, and the shaft sleeve body may include a sleeve body wall, wherein the sleeve body wall extends from the greatest thickness of the sleeve body wall in the coupler section. The coupler section thickness may vary down to the smallest thickness of the sleeve body wall, the greatest thickness of the sleeve body wall may be approximately 0.75 inches or less, and the smallest thickness of the sleeve body wall may be approximately 0.020 inches or greater.

In these or other embodiments, the hosel bore may include at least one receiving portion configured to engage with at least one coupler, wherein when the hosel bore receives the shaft sleeve, the at least one coupler is configured to engage the shaft sleeve for the hosel. It may engage at least one receiving portion to limit rotation of the sleeve.

In these or other embodiments, the shaft sleeve may be removably coupled to the shaft sleeve body.

In these or other embodiments, at least one coupler may include a plurality of couplers, and the plurality of couplers may include a first coupler and a second coupler, and the coupler length of the first coupler may be the second coupler. It may be different from the coupler length of the coupler.

In these or other embodiments, the at least one coupler may include a coupler length, which may be greater than or equal to approximately 0.260 inches and less than or equal to approximately 0.38 inches.

In these or other embodiments, the shaft sleeve body may include a receiving groove, and the shaft sleeve may include an extrusion, the receiving groove configured to receive the extrusion when the shaft sleeve body is engaged with the shaft sleeve cap. It can be configured.

In these or other embodiments, the shaft sleeve cap includes at least one slit and a cap wall, wherein the at least one slit is configured to cause the cap wall to be axially compressed.

In these or other embodiments, the shaft sleeve cap may include a cap bore and one or more ribs extending into the cap bore, wherein when the shaft bore receives the end of a golf club shaft, the one or more ribs The club shaft can be centered within the shaft bore.

In these or other embodiments, the shaft sleeve may include a shaft sleeve mass of approximately 4.5 grams, the shaft sleeve body may include a shaft sleeve body mass of approximately 4.1 grams or less, and/or the shaft sleeve The cap may include a shaft sleeve cap mass of greater than or equal to approximately 0.3 grams and less than or equal to approximately 1.0 grams.

In these or other embodiments, the golf club head may include an engagement portion configured to couple the shaft sleeve to the hosel, when the shaft sleeve cap is engaged with the shaft sleeve body, and the engagement portion attaches the shaft sleeve to the hosel. When secured against the golf club head, the golf club head may include an assembled club head mass, which may be approximately 199 grams or less.

In these or other embodiments, the golf club head may include an engagement portion configured to couple the shaft sleeve to the hosel, when the shaft sleeve cap is engaged with the shaft sleeve body, and the engagement portion attaches the shaft sleeve to the hosel. When fastened to the golf club head, the golf club head may include an assembled club head mass, and the shaft sleeve may include a shaft sleeve mass, and the ratio of the shaft sleeve mass to the assembled club head mass may be less than or equal to approximately 2.2%. there is.

In these or other embodiments, the golf club head may include an assembled club head mass and the shaft sleeve may include a shaft sleeve mass, and the ratio of the shaft sleeve mass to the disassembled club head mass may be approximately It may be less than 2.2%.

In these or other embodiments, the shaft sleeve CG vertical distance may be greater than approximately 45.3 millimeters relative to the bottom of the sole.

In these or other embodiments, when the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve height, and the shaft sleeve height may be greater than or equal to approximately 1.78 inches and less than or equal to approximately 1.82 inches; When the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve body height, and the shaft sleeve body height may be greater than or equal to approximately 1.529 inches and less than or equal to approximately 1.569 inches; and/or when the shaft sleeve body is coupled to the shaft sleeve cap, the shaft sleeve includes a shaft sleeve cap height, and the shaft sleeve cap height may be greater than or equal to approximately 0.46 inches and less than or equal to approximately 0.50 inches.

Another embodiment includes a golf club head. The golf club head includes a golf head body, and the golf club head body includes a lower sole, an upper portion opposing the sole portion, a heel portion, a toe portion opposing the heel portion, a rear portion, and a front portion opposing the rear portion. Soul containing; and a hosel. Additionally, the front portion includes a striking surface. The golf club head also includes a shaft sleeve insertable within the hosel and configured to couple the golf club shaft to the hosel. Meanwhile, the hosel may include a hosel bore configured to receive the shaft sleeve. Additionally, the shaft sleeve may include (i) a shaft bore configured to receive an end of a golf club shaft, (ii) a shaft sleeve body including a sleeve body outer wall and at least one coupler on the sleeve body outer wall, (iii) a shaft sleeve. It includes a shaft sleeve cap configured to be coupled to the body. The shaft sleeve body may further include an intermediate section and a sleeve body wall. Additionally, the shaft sleeve may include a shaft sleeve mass of approximately 4.3 grams. In these embodiments, the shaft sleeve body may include a shaft sleeve body mass of approximately 3.8 grams or less. Additionally, the shaft sleeve cap can include a cap bore and one or more ribs extending into the cap bore, wherein when the shaft bore receives an end of a golf club shaft, the one or more ribs center the golf club shaft within the shaft bore. You can. In various embodiments, the shaft sleeve cap may be removably coupled to the shaft sleeve body. Additionally, when the golf club head is in the address position with the shaft sleeve secured within the hosel, the center of gravity of the shaft sleeve can be located at a shaft sleeve CG vertical distance that is greater than approximately 43.5 millimeters and less than approximately 47 millimeters relative to the bottom of the sole. .

Other embodiments include methods. The method may include providing a shaft sleeve. Meanwhile, providing the shaft sleeve includes providing a shaft sleeve body; and providing a shaft sleeve cap. Additionally, the shaft sleeve may be configured to be insertable within the hosel of the golf club head and configured to couple the golf club shaft with the hosel. Likewise, the golf club head may include a golf head body and a hosel, and the golf club head body may include a bottom of the sole, an upper portion opposite the sole portion, a heel portion, a toe portion opposite the heel portion, a rear portion, and a rear portion. It may include a front portion facing. The front portion may include a striking surface. Additionally, the hosel may include a hosel bore configured to receive the shaft sleeve. Additionally, the shaft sleeve may include (i) a shaft bore configured to receive an end of a golf club shaft, (ii) a shaft sleeve body including a sleeve body outer wall and at least one coupler on the sleeve body outer wall, (iii) a shaft sleeve. It may include a shaft sleeve cap configured to be coupled to the body. When the golf club head is in the address position with the shaft sleeve secured within the hosel, the center of gravity of the shaft sleeve can be located at a shaft sleeve CG vertical distance of approximately 46 millimeters or less relative to the bottom of the sole.

Other examples and embodiments are also disclosed herein. Such examples and embodiments may be found in the drawings, claims, and/or detailed description of the invention.

Returning to the drawings, Figure 1 is a front perspective view showing a golf club head 101 equipped with a golf coupling mechanism 1000 according to an example of the present invention. Figure 2 is a top perspective view showing a golf club head 101 equipped with a golf coupling mechanism 1000. 3 is a cross-sectional view of the golf club head 101 taken along line III-III in FIG. 2, showing the golf coupling mechanism 1000 with the shaft sleeve 1100 inserted into the shaft receiving portion 3200. am. FIG. 4 is a cross-sectional view showing the golf club head 101 and the golf coupling mechanism 1000 taken along line IV-IV in FIG. 2.

In this embodiment, golf coupling mechanism 1000 includes a shaft sleeve 1100 configured to couple to the end of a golf club shaft, such as golf club shaft 102 (FIG. 1). Figure 5 is a side view showing the shaft sleeve 1100 separated from the golf club head 101 (Figure 1). FIG. 6 is a cross-sectional view of the shaft sleeve 1100 taken along line VI-VI in FIG. 5. In this example, shaft sleeve 1100 includes a shaft bore 3120 configured to receive the end of golf club shaft 102. Shaft sleeve 1100 also includes a sleeve axis 5150 that extends along the longitudinal centerline of shaft sleeve 1100 from sleeve top 1191 to sleeve bottom 3192. In this example, the sleeve outer wall 3130 is a right-angled cylinder with at least a portion of the sleeve outer wall 3130 substantially parallel to the sleeve axis 5150 and configured to define the boundaries of the shaft bore 3120 therein. In other words, sleeve axis 5150 is, in this embodiment, the centerline of sleeve outer wall 3130. In this example, shaft bore 3120 extends coaxially with shaft bore axis 6150 and is formed at an angle with respect to sleeve axis 5150, thereby being in a non-coaxial relationship with the sleeve axis. In this example, shaft bore axis 6150 makes an angle of approximately 0.5° with sleeve axis 5150, although examples are possible where this angle ranges from approximately 0.2° to approximately 4° with respect to sleeve axis 5150. Accordingly, in this embodiment, the shaft bore 3120 and the sleeve outer wall 3130 are not concentric. However, in other embodiments, shaft bore axis 6150 may be substantially collinear with sleeve axis 5150, such that sleeve outer wall 3130 and shaft bore 3120 may be substantially concentric.

The shaft sleeve 1100 includes a sleeve coupler set 3110 having one or more couplers protruding from the sleeve outer wall 3130. FIG. 7 is a cross-sectional view of shaft sleeve 1100 taken along line VII-VII of FIG. 5, across sleeve coupler set 3110. 3 to 7 are different views showing a sleeve coupler set 3110 protruding from the sleeve outer wall 3130. In this example, the sleeve coupler set 3110 includes sleeve couplers 3111, 3112, 5116, and 7115 protruding from the sleeve outer wall 3130, and a sleeve coupler ( 3112) is disposed to face the sleeve coupler 3111, and the sleeve coupler 7115 is disposed to face the sleeve coupler 5116. As shown in FIG. 7, in this embodiment, the sleeve coupler set 3110 forms concave and convex surfaces alternately around the peripheral portion 7191.

The sleeve coupler of the sleeve coupler set 3110 is configured to suppress rotation of the shaft sleeve 1100 with respect to the golf club head 101 when the shaft sleeve 1100 is inserted and fixed in the shaft receiving portion 3200. Includes an arcuate surface. For example, as shown in FIGS. 3, 5, and 7, (a) the sleeve coupler 3111 includes an arcuate surface 3151 that is curved throughout the outer area of the sleeve coupler 3111, (b) sleeve coupler 3112 includes an arcuate surface 3152 that is curved throughout an exterior area of sleeve coupler 3112, and (c) sleeve coupler 5116 includes an arcuate surface 3152 that is curved throughout an exterior area of sleeve coupler 5116. and an arcuate surface 5156 that is curved throughout an area, and (d) sleeve coupler 7115 includes an arcuate surface 7155 that is curved throughout an outer area of sleeve coupler 7115. do.

Golf coupling mechanism 1000 also includes a shaft receiving portion 3200 configured to receive shaft sleeve 1100 as shown in FIGS. 3 and 4 . Figure 8 is a plan view of the golf club head 101, showing the shaft receiving portion 3200 viewed from above, with the shaft sleeve 1100 removed. FIG. 9 is a cross-sectional view from the side of the golf club head 101 with the shaft sleeve 1100 removed, taken along line III-III in FIG. 2, showing a side cross-section of the shaft receiving portion 3200.

In this example, the shaft receiving portion 3200 is formed to be integrated with the hosel 1015 of the club head 101, but depending on the embodiment, the shaft receiving portion 3200 is provided separately from the hosel 1015, and is provided with an adhesive. It may be coupled to the hosel through one or more fastening methods, such as through a screw fastening mechanism and/or through bolts or rivets. In the same or different embodiments, the terms hosel and shaft receiver may be used interchangeably. Additionally, depending on the embodiment, the head bore of the golf club head 101 may be provided at the crown or top rather than the hosel 1015. In this embodiment, shaft receiver 3200 may also form part of or be coupled to this head bore.

The shaft sleeve 1100 is configured to be inserted into the shaft receiving portion 3200 and may be divided into several parts. For example, the shaft sleeve 1100 includes a sleeve insertion portion 3160 whose boundary is defined by the sleeve outer wall 3130, and when the shaft sleeve 1100 is fixed within the shaft receiving portion 3200, the sleeve insertion portion accommodates the shaft. It is configured to be integrated with the unit 3200. In this example, shaft sleeve 1100 also includes a sleeve top 3170 that is configured to remain outside of shaft receiving portion 3200 when shaft sleeve 1100 is secured within shaft receiving portion 3200. However, in other examples, sleeve top 3170 may not be provided and/or a shaft sleeve similar to shaft sleeve 1100 but configured to be fully inserted into shaft receiving portion 3200 is also possible.

The shaft accommodating portion 3200 includes an accommodating inner wall 3230 configured to define the boundary of the sleeve inserting portion 3160, and a sleeve outer wall 3130 of the shaft sleeve 1100 inserted into the shaft accommodating portion. . The shaft receiving portion 3200 also includes a receiving portion coupler set 3210 configured to engage with the coupler set 3110 of the shaft sleeve 1100 to suppress rotation of the shaft sleeve 1100 relative to the shaft receiving portion 3200. ) includes. In this embodiment, as shown in FIG. 8, the accommodating coupler set 3210 includes accommodating couplers 3213, 3214, 8217, and 8218 that are recessed into the accommodating inner wall 3230. The coupler 3213 is disposed to face the accommodating coupler 3214, and the accommodating coupler 8218 is disposed to face the accommodating coupler 8217.

The receptacle coupler of the receptacle coupler set 3210 of the shaft receptacle 3200 includes an arcuate surface complementary to the arcuate surface of the sleeve coupler set 3110 of the shaft sleeve 1100. For example, (a) the receptacle coupler 3213 includes an arcuate surface 3253 that is curved throughout the interior region of the receptacle coupler 3213 (FIG. 8), wherein the receptacle coupler 3213 The arcuate surface 3253 is complementary to the arcuate surface 3151 of the sleeve coupler 3111 (FIG. 7), and (b) the receptacle coupler 3214 is curved throughout the interior region of the receptacle coupler 3214. an arcuate surface 3254 formed (FIG. 8), wherein the arcuate surface 3254 of the receptacle coupler 3214 is complementary to the arcuate surface 3152 of the sleeve coupler 3112 (FIG. 7), (c ) The receptacle coupler 8217 includes an arcuate surface 8257 that is curved throughout the inner region of the receptacle coupler 8217 (FIG. 8), wherein the arcuate surface 8257 of the receptacle coupler 8217 ) is complementary to the arcuate surface 7155 of the sleeve coupler 7115 (FIG. 7), and (d) the receptacle coupler 8218 has an arcuate surface that is curved throughout the inner region of the receptacle coupler 8218. 8258 (FIG. 8), wherein the arcuate surface 8258 of the receptacle coupler 8218 is complementary to the arcuate surface 5156 of the sleeve coupler 5116 (FIG. 7).

In this embodiment, the arcuate surfaces of the sleeve coupler set 3110 and the receptacle coupler set 3210 are curved throughout each individual sleeve coupler and receptacle coupler. Figure 10 is a side view showing a portion of the shaft sleeve 1100 and the sleeve coupler set 3110. FIG. 11 is an X-ray side view showing a portion of the shaft receiving portion 3200 and the receiving portion coupler set 3210. 7 and 10, in this example, the arcuate surface 5156 of the sleeve coupler 5116 has a horizontal radius of curvature 7176, and the arcuate surface 3151 of the sleeve coupler 3111 is horizontal. has a directional radius of curvature 7171, and the arcuate surface 3152 of the sleeve coupler 3112 has a horizontal radius of curvature 7172, and the arcuate surface 7155 of the sleeve coupler 7115 has a horizontal radius of curvature 7175. has Additionally, in this example, the arcuate surface of the sleeve coupler set 3110 includes a vertically tapered portion that decreases in thickness toward the sleeve bottom 3192 of the shaft sleeve 1100 and toward the sleeve axis 5150 (FIG. 5 and Figure 6). For example, as shown in Figure 10, the arcuate surface 5156 of the sleeve coupler 5116 includes a vertically tapered portion 10186, and the arcuate surface 3151 of the sleeve coupler 3111 includes a vertically tapered portion ( 10181), wherein the arcuate surface 3152 of the sleeve coupler 3112 includes a vertically tapered portion 10182. Although not shown in FIG. 10 , arcuate surface 7155 of sleeve coupler 7115 also includes a vertically tapered portion similar to vertically tapered portion 10186 of sleeve coupler 5116.

8 and 11 , for the receptacle coupler set 3210 of the shaft receptacle 3200, in this example, the arcuate surface 8258 of the receptacle coupler 8218 is connected to the sleeve coupler 5116. has a horizontal radius of curvature 8278 that is complementary to the horizontal radius of curvature 7176 of has a horizontal radius of curvature 8273 complementary to radius 7171 (FIG. 7), and the arcuate surface 3254 of receptacle coupler 3214 is complementary to a horizontal radius of curvature 7172 of sleeve coupler 3112. has a horizontal radius of curvature 8274 (FIG. 7), and the arcuate surface 8257 of the receiver coupler 8217 has a horizontal radius of curvature 8277 that is complementary to the horizontal radius of curvature 7175 of the sleeve coupler 7115. has (Figure 7).

Additionally, in this example, the arcuate surface of the receiver coupler set 3210 includes a vertically tapered portion that is complementary to the vertically tapered portion of the arcuate surface of the sleeve coupler set 3110. For example, as shown in Figure 11, the arcuate surface 8258 of the receptacle coupler 8218 includes a vertically tapered portion 11288 that is complementary to the vertically tapered portion 10186 of the sleeve coupler 5116 ( 10), the arcuate surface 3253 of the receptacle coupler 3213 includes a vertically tapered portion 11283 that is complementary to the vertically tapered portion 10181 of the sleeve coupler 3111 (FIG. 10), The arcuate surface 3254 of the coupler 3214 includes a vertically tapered portion 11284 that is complementary to the vertically tapered portion 10182 of the sleeve coupler 3112 (FIG. 10). Although not shown in FIG. 11 , the arcuate surface 8257 of the receptacle coupler 8217 also resembles the vertically tapered portion 11288 of the receptacle coupler 8218 and the vertically tapered portion of the sleeve coupler 7115. It includes a vertically tapered portion that is complementary to.

In this embodiment, the vertically tapered portions of the arcuate surfaces of the sleeve coupler set 3110 are formed substantially linearly, such that the vertically tapered portions 10181 and 10182 of the sleeve couplers 3111 and 3112 shown in FIG. 10 ), it decreases substantially in a straight line, as can be seen from the profile of ). Similarly, the vertical taper of the arcuate surfaces of the receptacle coupler set 3210, as can be seen from the profiles of the vertically tapered portions 11283, 11284 of the receptacle couplers 3213, 3214 shown in FIG. The parts are formed substantially linearly. In the same or other examples, the substantially linearly shaped vertically tapered portions of the arcuate surfaces of the sleeve coupler set 3110 and the receptacle coupler set 3210 may have a substantially linear shape of a substantially straight line or an infinitely large portion. It may also be considered to have a close vertical radius of curvature.

However, in other embodiments, the vertically tapered portion of the sleeve coupler and/or receptacle coupler is not necessarily linear. 12 is a side view showing a portion of shaft sleeve 12100 along with sleeve coupler set 12110. Figure 13 is an

Shaft sleeve 12100 may be similar to shaft sleeve 1100 (see FIGS. 1 to 7 and 10), and shaft receiving portion 13200 may be similar to shaft receiving portion 3200 (see FIGS. 3 and 10). 4, 8 and 10). However, sleeve coupler set 12110 differs from sleeve coupler set 3110 in that the vertically tapered portion is not linear. For example, sleeve coupler set 12110 includes vertically tapered portions 12186, 12181, and 12182, which are formed in a curved rather than linear shape and may have respective vertical radii of curvature. Likewise, the receptacle coupler set 13210 is formed in a curved shape rather than a linear shape and has vertically tapered portions 13288 and 13283 each having a respective vertical radius of curvature that is complementary to the radius of curvature of the sleeve coupler set 12110. , 13284). Accordingly, the sleeve coupler of the sleeve coupler set 12110 and the receptacle coupler of the receptacle coupler set 13120 are formed to be curved in the horizontal and vertical directions over their respective entire surface areas, respectively. For example, a horizontal line that is tangential to any point on the overall surface of sleeve coupler 12116 is not tangential to any other point on the overall surface of sleeve coupler 12116. In the same or other embodiments, the entire surface of each sleeve coupler in the sleeve coupler set 12110 and the entire surface of each receptacle coupler in the receptacle coupler set 13120 are each substantially oriented in all directions. It is formed in a curved shape.

Different sleeve couplers and receiver couplers of the present invention may have individual radii of curvature within a predetermined range. For example, referring to FIGS. 7 and 10 , the horizontal radii of curvature 7171, 7172, 7175, and 7176 of sleeve coupler set 3110 are each approximately 0.175 inches (4.45 mm), but in some embodiments, approximately 0.1 inches. (2.54 mm) to approximately 0.225 inches (5.715 mm). 8 and 11, the horizontal curvature radii (8273, 8274, 8277, 8278) of the receiving coupler set 3210 are the horizontal curvature radii (7171, 7172, 7175, 7176), respectively (FIGS. 7 and It may be complementary to or similar to Figure 10). Additionally, in the embodiments of FIGS. 12 and 13 , the horizontal radius of curvature of sleeve coupler set 12110 and receptacle coupler set 13210 also varies with sleeve coupler set 3110 and/or receptacle coupler set 3210. ) may be similar to what was described above according to the embodiments of FIGS. 1 to 11.

As described above, in the embodiments of FIGS. 1 to 11, the vertically tapered portions of the sleeve coupler set 3110 (FIG. 10) and the receiver coupler set 3210 (FIG. 11) have a vertical curvature close to infinite. By having a radius, it can be formed to be substantially straight. 12 and 13 , the vertically tapered portions of sleeve coupler set 12110 (FIG. 12) and receptacle coupler set 13210 (FIG. 13) have a more significant vertical radius of curvature. As an example, the vertical radius of curvature (FIG. 12) of the vertically tapered portion 12186 of sleeve coupler 12116 is approximately 0.8 inches (20.32 mm), but may range from approximately 0.4 inches (10.16 mm) to 2 inches (depending on the embodiment). It may be in the range of 50.8 mm). The vertical radius of curvature of other similar portions of sleeve coupler set 12110 may also be in the same range as described above for vertically tapered portion 12186. Additionally, the vertical radius of curvature of the receptacle coupler set 13210 (FIG. 13) may be complementary to or similar to the vertical radius of curvature described for the sleeve coupler set 12110 (FIG. 12).

In some examples, the arcuate surfaces of the sleeve coupler and/or receptacle coupler may include portions of the geometry. For example, the arcuate surface of sleeve coupler 12116 (FIG. 12) may include a secondary curved surface, and the arcuate surface of receptacle coupler 13218 (FIG. 13) may include a secondary curved surface complementary to the arcuate surface of sleeve coupler 12116. may include. In this example, the secondary curves of sleeve coupler 12116 and receptacle coupler 13218 may include, for example, part of a paraboloid or part of a hyperboloid. Additionally, in some examples, sleeve couplers and receptacle couplers with arcuate quadric surfaces may include a portion of a degenerate quadric surface, such as a portion of a conical surface. This example may be similar to the examples of FIGS. 10 and 11 for sleeve coupler set 3110 and receptacle coupler set 3200.

10 and 11 and 12 and 13, the arcuate surface of the sleeve coupler and the receptacle coupler of sleeve coupler set 3110 (FIG. 10) and/or sleeve coupler set 12110 (FIG. 12) The arcuate surfaces of the receptacle couplers of set 3210 (FIG. 11) and/or receptacle coupler set 13210 (FIG. 13) may be configured to be continuously curved, such that there are no points of deflection. In the same or other embodiments, such an arcuate surface may also be configured as edgeless (except for the individual perimeter portions). For example, the overall surface area of sleeve coupler 5116 (FIG. 10) is in the form of no edges for any portion of the overall surface area within the perimeter. Additionally, the overall surface area of the receptacle coupler 8218 (FIG. 11) is edgeless for any portion of the overall surface area within the perimeter. A similar edgeless configuration may also appear in both sleeve coupler 12110 (FIG. 12) and receptacle coupler 13218 (FIG. 13). Thanks to the features described above, the contact area can be maximized when the sleeve coupler is seated against the receptacle coupler to inhibit rotation of the shaft sleeve relative to the individual shaft receptacle.

3-7 and 10, sleeve coupler set 3110 protrudes from the upper section of sleeve outer wall 3130. Likewise, as shown in FIGS. 3 and 4, 8 and 9, and 11, the receptacle coupler set 3210 is recessed into the upper section of the receptacle inner wall 3230. However, in other embodiments, the sleeve coupler set 3110 and the receiver coupler set 3210 may be disposed in different positions. For example, the sleeve coupler set 3110 and the receiver coupler set 3210 may be disposed at or toward the bottom section or middle section of the shaft sleeve 1100 and shaft receiver 3200, respectively. It can be. In the same or other embodiments, the sleeve coupler set 3110 is formed recessed into the sleeve outer wall 3130 and the receiver coupler set 3210 is configured to protrude from the receiver inner wall 3230. The shapes of the set 3110 and the receiving coupler set 3210 may be reversed. The devices, methods and articles of manufacture as described herein are not limited to the foregoing.

As shown in cross-section in Figure 3, the golf coupling mechanism 1000 also includes a fixed fastening portion 3400 configured to secure the shaft sleeve 1100 to the shaft receiving portion 3200. In this example, the fixed fastening portion 3400 includes a bolt configured to engage the sleeve bottom 3192 of the shaft sleeve 1100 through a passage at the bottom of the shaft receiving portion 3200. The fixed fastening portion 3400 is configured to couple with the lower end of the sleeve 3192 through a screw fastening mechanism. As the screw fastening mechanism is tightened, the fixed fastening portion 3400 is configured to pull the shaft sleeve 1100 toward the bottom of the shaft receiving portion 3200, such that the arcuate surface of the sleeve coupler set 3110 is aligned with the receiving portion. It seats against the arcuate surface of coupler set 3210.

In an example such as this example, the combined total mass of the body of golf club head 101, shaft sleeve 1100, and secure fastener 3400 may be referred to as the assembled club head mass, and shaft sleeve 1100 ) and the mass of the body of the golf club head 101 without the fixed fastener 3400 may be referred to as the disassembled club head mass.

In this embodiment, the fixed fastening part 3400 is coupled to the fastening part to suppress or at least prevent it from being completely removed from the shaft receiving part 3200 when the fixed fastening part 3400 is separated from the shaft sleeve 1100. It includes a retainer element 3450. The retainer element 3450 is disposed inside the shaft receiving portion 3200 and includes a washer coupled to the periphery of the screw thread of the fixed fastening portion 3400. In this embodiment, the position of the retainer element 3450 can be adjusted along the threads of the fixed fastener 3400, for example, by pushing the fixed fastener 3400 through the retainer element 3450. It may be configured to flexibly engage with the threads of the fixed fastener 3400 so that it remains substantially in place once placed along the threads of the fixed fastener 3400. Accordingly, the retainer element 3450 can maintain the end of the fixed fastening part 3400 inside the shaft receiving part 3200 after the shaft sleeve 1100 is removed from the shaft receiving part, and the fixed fastening part 3400 Allow the end to be inserted into the bottom 3192 of the sleeve. In some examples, retainer element 3450 may include a material such as nylon material or other plastic material that is more flexible than the material of secure fastener 3400.

In another example, threads corresponding to the threads of the fixed fasteners 3400 may be formed in the bore through which the fixed fastener 3400 introduced into the shaft receiving portion 3200 passes, and thus these threads may be used as a retainer element. can perform its role. In these other examples, retainer element 3450 may be omitted.

The sleeve coupler set 3110 and the receiving portion coupler set 3210 are such that when the shaft sleeve 1110 is fixed to the shaft receiving portion 3200 by the fixed fastening portion 3400, at least most of the individual arcuate surfaces butt against each other. It is constructed to be seated. For example, in the embodiment of Figures 10 and 11, when seated against each other, at least most of the entire surface of the sleeve coupler 5116 and most of the entire surface of the receiver coupler 8218 contact each other, so that the shaft receiver Rotation of the shaft sleeve 1100 relative to 3200 is suppressed. As another example, in the embodiment of FIGS. 11 and 12 , when seated against each other, most of the entire surface of the sleeve coupler 12116 and most of the entire surface of the receiver coupler 13218 also contact each other, thereby causing rotation. suppressed. In the same or other examples, an individual sleeve coupler of sleeve coupler set 3110 (FIG. 10) or sleeve coupler set 12110 (FIG. 12) and a receiver coupler set 3210 (FIG. 11) or an individual sleeve coupler. The contact area defined by the interface between the individual receptacle couplers of subcoupler set 13210 (FIG. 13) may be approximately 51% to approximately 95% of the total surface of the individual receptacle coupler or individual sleeve coupler. there is. In some embodiments, this contact area may be increased even further, substantially approaching or equal to the entire surface of each receptacle coupler and/or each sleeve coupler. Additionally, in some examples, the arcuate surface of the sleeve coupler of sleeve coupler set 3110 (FIG. 10) or sleeve coupler set 12110 (FIG. 12) is aligned with the receptacle coupler set 3210 (FIG. 11) or receptacle coupler set. When seated against the arcuate surface of the receptacle coupler of 13210 (FIG. 13), perpendicular forces are applied across the individual contact areas relative to each other.

In this example, when the fixed fastening part 3400 fixes the shaft sleeve 1100 to the shaft receiving part 3200, the upper part of the sleeve 3170 is maintained outside the shaft receiving part 3200, and in this state, The lower end 3171 of the upper sleeve 3170 is spaced apart from the upper end of the shaft receiving portion 3200 as the sleeve coupler set 3110 is seated against the receiving portion coupler set 3210. This built-in spaced arrangement structure facilitates manufacturing tolerances and ensures that the sleeve coupler set 3110 can be properly seated against the receiver coupler set 3210.

In the same example or another example, some of the one or more sleeve couplers of sleeve coupler set 3110 may protrude beyond the top of shaft receiving portion 3200. Additionally, in some examples, one or more sleeve couplers of sleeve coupler set 3110 may extend beyond the bottom of one or more receptacle couplers of receptacle coupler set 3210. In other examples, one or more receptacle couplers of the receptacle coupler set may extend beyond the bottom of one or more sleeve couplers of the sleeve coupler set 3110. Some of the foregoing features are incorporated in the golf coupling mechanism 1000 to facilitate manufacturing within required tolerances while still allowing proper seating of the sleeve coupler set 3110 relative to the receiver coupler set 3210. ) can also be employed in the design of.

FIG. 14 is a cross-sectional view of the golf coupling mechanism 1000 of configuration 1400 from above, as seen along the line XIV-XIV in FIG. 4. Looking at the configuration 1400 of the golf coupling mechanism 1000 shown in FIGS. 3, 4, and 14, the sleeve couplers 3111, 7115, 3112, and 5116 (FIG. 7) of the sleeve coupler set 3110 are respectively , It is coupled with the receiver couplers (3213, 8217, 3214, 8218) of the receiver coupler set (3210) (FIG. 8). Because shaft bore axis 6150 (FIG. 6) is not coaxial with sleeve axis 5150 of shaft sleeve 1100 as previously described, in configuration 1400 of FIG. 14, shaft bore axis 6150 (FIG. 6) and a first lie angle between shaft receiver 3200 (FIGS. 3 and 4, 8 and 9) and/or between shaft 102 (FIG. 1) and golf club head 101 (FIG. 1). and a first loft angle may be defined.

FIG. 15 is a cross-sectional view of the golf coupling mechanism 1000 of configuration 1500 from above, as seen along the line ⅩⅣ-ⅩⅣ of FIG. 4 . In this configuration 1500, the sleeve couplers 3112, 5116, 3111, and 7115 of the sleeve coupler set 3110 (FIG. 7) are, respectively, the receptacle couplers 3213, 8217, and 3214 of the receptacle coupler set 3210. 8218) (Figure 8). Since shaft bore axis 6150 (FIG. 6) is not coaxial with sleeve axis 5150 of shaft sleeve 1100 as previously described, in configuration 1500 of FIG. 15, shaft bore axis 6150 (FIG. 6) and a second lie angle between shaft receiver 3200 (FIGS. 3 and 4, 8 and 9) and/or between shaft 102 (FIG. 1) and golf club head 101 (FIG. 1). and a second loft angle may be defined.

FIG. 16 is a cross-sectional view of the golf coupling mechanism 1000 of configuration 1600 from above, as seen along the line XIV-XIV in FIG. 4. In configuration 1600, sleeve couplers 7115, 3112, 5116, and 3111 of sleeve coupler set 3110 (FIG. 7) are, respectively, receptacle couplers 3213, 8217, 3214, and 8218 of receptacle coupler set 3210. ) (Figure 8). Since shaft bore axis 6150 (FIG. 6) is not coaxial with sleeve axis 5150 of shaft sleeve 1100 as previously described, in configuration 1600 of FIG. 16, shaft bore axis 6150 (FIG. 6) and a third lie angle between shaft receiver 3200 (FIGS. 3 and 4, 8 and 9) and/or between shaft 102 (FIG. 1) and golf club head 101 (FIG. 1). and a third loft angle may be defined.

FIG. 17 is a cross-sectional view of the golf coupling mechanism 1000 of configuration 1700 from above, as seen along the line XIV-XIV in FIG. 4. In configuration 1700, sleeve couplers 5116, 3111, 7115, and 3112 of sleeve coupler set 3110 (FIG. 7) are, respectively, receptacle couplers 3213, 8217, 3214, and 8218 of receptacle coupler set 3210. ) (Figure 8). Because shaft bore axis 6150 (FIG. 6) is not coaxial with sleeve axis 5150 of shaft sleeve 1100 as previously described, in configuration 1700 of FIG. 17, shaft bore axis 6150 (FIG. 6) and a fourth lie angle between shaft receiver 3200 (FIGS. 3 and 4, 8 and 9) and/or between shaft 102 (FIG. 1) and golf club head 101 (FIG. 1). and a fourth loft angle may be defined.

Depending on the angle of the shaft bore axis 6150 relative to the sleeve axis 5150 and the sleeve coupler set 3110, different lie angle and loft angle alignments can be achieved through the configuration shown in FIGS. 14-17. . For example, in this embodiment, as shown in FIG. 6, the bottom of the shaft bore 3120 is formed sharply toward the sleeve coupler 3111 due to the angle between the shaft bore axis 6150 and the sleeve axis 5150. As a result, shaft 102 (FIG. 1) is tilted toward sleeve coupler 3112 when inserted into shaft sleeve 1100.

Accordingly, in configuration 1400 (FIG. 14), the first lie angle may include a lie angle of smaller magnitude and the first loft angle may include a loft angle of a neutral value or an intermediate magnitude. . As an example, the first lie angle is set such that the gripping end of the shaft 102 is inclined toward the heel of the golf club head 101 (FIG. 1) at an angle of approximately 0.2° to approximately 4°, such that the configuration ( 1400), the lie angle of the golf club can be reduced. The first loft angle, which has a neutral value in this example, does not affect the tilt of shaft 102 in configuration 1400.

In configuration 1500 (FIG. 15), the second lie angle may include a larger magnitude lie angle, where the second loft angle is similar or identical to the first loft angle in configuration 1400 (FIG. 14). It may also include a neutral or medium loft angle. As an example, the second lie angle is set so that the gripping end of the shaft 102 is inclined toward the toe of the golf club head 101 (FIG. 1) at an angle of approximately 0.2° to approximately 4°, such that the configuration ( 1500), the lie angle of the golf club can be increased. The second loft angle, which in this example has a neutral value, does not affect the tilt of shaft 102 in configuration 1500.

In configuration 1600 (FIG. 16), the third loft angle may include a smaller sized loft angle, and the third lie angle may include a neutral value or intermediate sized lie angle. As an example, the third loft angle is set such that the gripping end of shaft 102 is inclined toward the rear of golf club head 101 (FIG. 1) at an angle of approximately 0.2° to approximately 4°, in configuration 1600. The loft angle of the golf club can be reduced. The third lie angle, which has a neutral value in this example, does not affect the tilt of shaft 102 in configuration 1600.

In configuration 1700 (FIG. 17), the fourth loft angle may include a larger magnitude loft angle, where the fourth lie angle is similar or identical to the third lie angle in configuration 1600 (FIG. 16). It may also include a lie angle of neutral or medium value. As an example, the fourth loft angle is set such that the gripping end of shaft 102 is inclined toward the front or impact surface of golf club head 101 (FIG. 1) at an angle of approximately 0.2° to approximately 4°. The loft angle of the golf club can be increased at (1700). The fourth lie angle, which has a neutral value in this example, does not affect the tilt of shaft 102 in configuration 1700.

In other embodiments, the lie angle and loft can be adjusted by changing the angle and/or orientation of shaft bore axis 6150 (FIG. 6) relative to sleeve axis 5150 (FIG. 6) of shaft sleeve 1100. Angular relationships may also be specified. In addition, as shown in FIGS. 14 to 17, the sleeve couplers 3111, 3112, 5116, and 7115 are symmetrical to each other, and the receiving couplers 3213, 3214, 8217, and 8218 are also symmetrical to each other. In a different embodiment, only the opposing couplers of the sleeve coupler and the receiver coupler may be formed symmetrically to each other such that only two (i.e., not four) different lie angle and loft angle combinations are permitted. It may be possible.

The different features described above for the golf coupler mechanisms of FIGS. 1 to 17 also allow the golf clubs in use to have a variety of features when compared to other golf club heads with adjustable shaft coupling mechanisms. It can provide performance benefits. For example, because the number of parts required is reduced and/or because receptacle coupler set 3210 is positioned only toward the top of shaft receptacle 3200 (FIG. 3), the hosel diameter of hosel 1015 (FIG. 1) 1031 may be kept at a minimum and/or kept relatively unchanged from the hosel diameter of a corresponding regular golf club head. In some examples, as shown in FIG. 8, hosel diameter 1031 is less than approximately 20 mm, such as approximately 0.55 inches (approximately 14 mm), or such as approximately 0.53 inches (approximately 13.46 mm) at top of receptacle 1032. It can be. Additionally, the top wall thickness 9250 (FIG. 9) of shaft receptacle 3200 can be minimized as shown at receptacle top 1032 of shaft receptacle 3200. For example, top wall thickness 9250 may be approximately 0.035 inches (approximately 0.89 mm) or less, such as approximately 0.024 inches (approximately 0.61 mm).

As shown in FIG. 8 , upper wall thickness 9250 varies in thickness along receptacle top 1032 in this embodiment, with at least one hosel upper wall narrow section 8252 and at least one hosel upper wall narrow section 8252 at receptacle top 1032. Includes one hosel upper wall thick section 8251. The hosel top wall thick section 8251 may have a thickness of approximately 2.3 mm or less at the top of the receptacle 1032 when measured radially about the center point of the hosel diameter 1031. The hosel upper wall narrow section 8252 may have a thickness of approximately 0.9 mm or less at the top of the receptacle 1032 when measured radially about the center point of the hosel diameter 1031. In this example, the hosel upper wall thick section 8251 may be approximately 1.27 mm or less, and the hosel upper wall narrow section 8252 may be approximately 0.64 mm or less, as measured radially about the center point of the hosel diameter 1031.

Because the hosel diameter 1031 can be minimized as described above, the aerodynamic properties of the golf club head 101 can be improved as a result of reduced aerodynamic drag from the hosel 1015. 19 is a diagram showing a comparison of stagnant drag wake areas 1911 and 1921 for individual hosels of golf club heads 1910 and 1920. The hosel diameter of golf club heads 1910 is approximately 0.5 inches, and the golf club head 1910 has a hosel diameter of approximately 0.5 inches. The hosel diameter of the club head (1920) is larger, approximately 0.62 inches. In some examples, golf club head 1910 may be similar to golf club head 101 (Figures 1-4, 8, and 9). As shown in FIG. 19 , a club head 1920 with a larger hosel diameter results in a larger stagnant drag wake area 1921 downstream of the hosel, thereby resulting in a smaller stagnant drag wake area of the club head 1910. (1911), resulting in higher aerodynamic drag values. Figure 20 is a diagram showing drag as a function of open face angle versus hosel diameter of golf club heads 1910 and 1920. In some examples, the golf club shaft of club head 1910 may also have a reduced shaft thickness, for example, the shaft thickness may be approximately 0.335 inches (approximately 8.5 mm). In the same or other examples, for open face orientation angles up to 50°, this difference in hosel diameter results in a golf club head (1910) having less drag resistance compared to a golf club head (1920) having more drag. In the case of , it can reach a size of approximately 0.1 lbs. In the same example or another example, the drag of golf club head 1910 may range from approximately 1.2 lbs in an approximately square orientation range to approximately 0.2 lbs in an approximately 50° open face orientation range.

In the same or other embodiments, the mass and/or mass ratio of the golf coupler mechanism of FIGS. 1-17 may be modified to fit an individual golf club head compared to another golf club head with an adjustable shaft coupling mechanism. can be minimized. For example, in the example where golf club head 101 (FIGS. 1-4, 8 and 9) includes a driver type golf club head, the different components of club head 101 are summarized in Table 1 below. It may have mass properties similar to those described.

Example driver head driver head range Mass of club head (101) (unassembled) (approx.)≤192g (Approximately) 185-205g Mass of sleeve 1100 (approx.)≤5.2g (approx.)≤6g Mass of sleeve (1100) + fixed fastener (3400) (approx.)≤6.8g (approx.)≤7.5g Total mass of assembled club head (approx.)≤198.8g (Approximately) 188-213g

Sample mass characteristics for driver type golf club heads

In this example, the mass ratio for the golf coupler mechanism 1000 to the assembled club head 101 can be very low, as summarized in Table 2 below.

Example driver head driver head range mass of sleeve
Mass of the unassembled club head (approx.)≤2.7% (approx.)≤3% mass of sleeve
Mass of assembled club head (Approximately)≤2.6% (approx.)≤3% Mass of (sleeve + fixed fastener)
Mass of the unassembled club head (Approximately)≤3.5% (approx.)≤4% Mass of (sleeve + fixed fastener)
Mass of assembled club head (approx.)≤3.4% (approx.)≤4%

Sample mass ratio for driver type golf club head

In other examples, as in the case of golf club head 101 (FIGS. 1-4, 8 and 9) including a fairway wood type golf club head, the club head 101 The different components may have similar mass properties as summarized in Table 3 below.

Exemplary 3-FW head Exemplary 5-FW head Exemplary 7-FW head Range of FW heads Mass of club head (101) (unassembled) (approx.)≤205g (approx.)≤209g (approx.)≤213g (Approximately) 200-225g Mass of sleeve 1100 (approx.)≤5.2g (approx.)≤5.2g (approx.)≤5.2g (approx.)≤6g Mass of sleeve (1100) + fixed fastening part (3400) (approx.)≤6.8g (approx.)≤6.8g (approx.)≤6.8g (approx.)≤7.5g Total mass of assembled club head (approx.)≤211.8g (approx.)≤215.8g (approx.)≤219.8g (Approximately) 203-233g

Sample mass characteristics of fairway wood type golf club heads

In this example, the mass ratio for golf coupler mechanism 1000 to assembled club head 101 may be very low, as summarized in Table 4 below.

Exemplary 3-FW head Exemplary 5-FW head Exemplary 7-FW head Range of FW head mass of sleeve
Mass of the unassembled club head (approx.)≤2.54% (approx.)≤2.48% (approx.)≤2.44% (approx.)≤2.8% mass of sleeve
Mass of assembled club head (approx.)≤2.46% (approx.)≤2.41% (approx.)≤2.36% (approx.)≤2.8% Mass of (sleeve + fixed fastener)
Mass of the unassembled club head (approx.)≤3.32% (approx.)≤3.25% (approx.)≤3.19% (Approximately)≤3.5% Mass of (sleeve + fixed fastener)
Mass of assembled club head (approx.)≤3.21% (approx.)≤3.16% (approx.)≤3.10% (Approximately)≤3.5%

Sample mass ratio for fairway wood type golf club head

In some examples, the mass, dimensions and/or location characteristics described above may provide flexibility and/or gain regarding the location and/or mass distribution of the center of gravity (CG) of the golf club head. For example, the shaft sleeve center of gravity 1150 (FIG. 1) of shaft sleeve 1100 may be configured to be disposed at shaft sleeve CG vertical distance 1159 (FIG. 1).

In some examples, such as in embodiments where club head 101 ( FIGS. 1-4 , 8 and 9 ) includes a driver-type golf club head, shaft sleeve center of gravity 1150 of shaft sleeve 1100 ( 1) may be configured to be disposed at a shaft sleeve CG vertical distance 1159, which may be less than approximately 50 mm above the outer sole bottom 10141 of the sole 1014 of a driver type club head 101. In some or other examples, shaft sleeve CG vertical distance 1159 may be less than approximately 46.2 mm above outer sole bottom 10141. In some or other examples, shaft sleeve CG vertical distance 1159 may be less than approximately 43.7 mm above outer sole bottom 10141. In some embodiments, the shaft sleeve center of gravity 1150 of the shaft sleeve 1100 is also approximately 0.59 inches (approximately) above the assembled club head center of gravity 1050 (FIG. 1) of the assembled driver type golf club head 101. It may be configured to be disposed at a shaft sleeve CG vertical distance 1059 (FIG. 1) of less than 15 mm). In the same or other embodiments, the shaft sleeve CG vertical distance 1159 may be at least approximately 7.6 mm greater than the assembled club head CG vertical distance 1058 of the driver type club head 101.

In other examples, such as in embodiments where club head 101 ( FIGS. 1-4, 8 and 9 ) includes a fairway wood type golf club head, the shaft sleeve center of gravity of shaft sleeve 1100 ( 1150) (FIG. 1) may be configured to be disposed at a shaft sleeve CG vertical distance 1159 of less than approximately 35.6 mm above the outer sole bottom of the sole 1014 of the fairway wood type club head 101. In some or other examples, the shaft sleeve CG vertical distance 1159 may be less than approximately 1.35 inches (approximately 34.3 mm) above the outer sole bottom 10141 of the sole 1014 of the fairway wood type club head 101. . In some embodiments, the shaft sleeve center of gravity 1150 of the shaft sleeve 1100 is also less than approximately 19 mm above the assembled club head center of gravity 1050 (FIG. 1) of the assembled fairway wood type golf club head 101. The shaft sleeve CG may be configured to be disposed at a vertical distance 1059 (FIG. 1). In the same or other embodiments, the shaft sleeve CG vertical distance 1159 may be at least approximately 16.5 mm greater than the assembled club head CG vertical distance 1058 of the fairway wood type club head 101.

In this example, as shown in FIG. 1 , hosel 1015 includes a hosel axis 1016 extending along the longitudinal centerline of hosel 1015 . Hosel axis 1016 defines a hosel lie angle 1018 relative to lower horizontal axis 1019, which is horizontally tangent to sole bottom 10141. In some examples, hosel lie angle 1018 may be approximately 58 degrees, for example. In this embodiment, the shaft sleeve CG vertical distance 1159 and the assembled club head CG vertical distance 1058 extend vertically from the lower horizontal axis 1019.

Club head 101 also includes a crown height vertical distance 1018 extending vertically to the top of crown 1017 relative to the bottom of the sole 10141. For example, in some embodiments where club head 101 includes a driver type golf club head, crown height vertical distance 1018 may be at least approximately 59.7 mm relative to sole bottom 10141. In some or other embodiments, the assembled club head CG vertical distance may be less than approximately 33 mm relative to sole bottom 10141.

Additionally, in some examples, as shown in FIG. 1 , the top of the receptacle 1032 is configured to remain above the top of the hosel 1015 and below the top of the crown 1017 of the golf club head 101. In the same or other embodiments, the hosel 1015 may be formed in a shape that does not have a cylindrical outer upper section, and the crown 1017 may not form a cylindrical outline of the hosel 1015. A transition portion may be formed at the top 1032 of the receiving portion of the hosel 1015 to a substantially circular outer perimeter. According to this feature, the center of gravity of the shaft sleeve 1100 can be positioned closer to the center of gravity of the assembled golf club head 101.

Referring back to the drawings, FIG. 18 is a flow diagram of a method 18000 that may be used to provide, form, and/or manufacture a golf coupler mechanism in accordance with the present invention. In some examples, the golf coupler mechanism may be similar to the golf coupler mechanism 1000 of FIGS. 1-11 and 14-16, or the golf coupler mechanism of FIGS. 12 and 13.

Method 18000 includes a block 18100 that provides a shaft sleeve coupled to an end of a golf club shaft and including a set of arcuate sleeve couplers. In some examples, the shaft sleeve may be similar to shaft sleeve 1100 (FIGS. 1-7, 10, 14-16) and/or shaft sleeve 12100 (FIG. 12), where the golf club shaft It may be similar to golf club shaft 102 (FIGS. 1 and 5). In the same or other example, the arcuate sleeve coupler set may include sleeve coupler set 3110 (FIGS. 3-7, 10, 14-17) and/or sleeve coupler set 12110 (FIG. 12). It may be similar.

Block 18200 of method 18000 includes providing a shaft receptacle of a golf club head, including a set of arcuate receptacle couplers configured to engage a set of arcuate sleeve couplers of a shaft sleeve. In some examples, the shaft receptacle is similar to shaft receptacle 3200 (FIGS. 3 and 4, 8 and 9, 11, 14-17) and/or shaft receptacle 13200 (FIG. 13). can do. The arcuate receptacle coupler set includes a receptacle coupler set 3210 (FIGS. 3 and 4, 8 and 9, 11, 14 to 17) and/or a receptacle coupler set 13210 (FIG. 13). It may be similar.

Block 18300 of method 18000 includes providing a secure fastener configured to secure the shaft sleeve to the shaft receiving portion. In some examples, the fixed fastener may be similar to fixed fastener 3400 (FIGS. 3 and 4). The fixed fastener may be configured to pull the shaft sleeve toward the shaft receiving portion and seat the arched sleeve coupler set against the arched receiving portion coupler set.

In some examples, one or more different blocks of method 18000 may be combined into a single block or performed simultaneously, and/or the order of such blocks may be reversed. For example, in some embodiments, blocks 18200 and 18300 may be combined if desired. In the same or other examples, some blocks of method 18000 may be split into multiple sub-blocks. As an example, block 18100 includes a sub-block for forming a horizontal radius of curvature of the arcuate surface of the sleeve coupler of the set of arcuate sleeve couplers and a sub-block for forming a vertically tapered portion of the arcuate surface of the sleeve coupler of the set of arcuate sleeve couplers. Can contain subblocks. Additionally, in some examples, method 18000 may include additional or different blocks. As an example, method 18000 may include another block for providing the shaft receiver of block 18200 to a golf club head, and/or another block for providing the shaft sleeve of block 18100 to a shaft. Also, by way of example, method 18000 may include only some of the steps described above. For example, block 18300 may be optional in some embodiments. Other variations on method 18000 may be practiced without departing from the scope of the present disclosure.

slot cap golf coupling mechanism

Returning to the drawings, FIG. 21 illustrates a front perspective view of a golf club head 21101 with a golf coupling mechanism 211000 according to an embodiment. In many embodiments, golf coupling mechanism 211000 may include a shaft sleeve 211100 configured to couple to an end of a golf club shaft, such as golf club shaft 211102. In various embodiments, golf club head 21101 may be similar to golf club head 101 (Figure 1); Golf coupling mechanism 211000 may be similar to golf coupling mechanism 1000 (FIG. 1); and/or golf club shaft 21102 may be similar or identical to golf club shaft 102 (FIG. 1). Accordingly, the golf coupling mechanism 211000 may include a shaft sleeve 211100 and a shaft receiving portion 213200. Meanwhile, shaft sleeve 211100 may be similar to shaft sleeve 1100 (FIG. 1), and/or shaft receiving portion 213200 may be similar to shaft receiving portion 3200 (FIG. 3).

Returning to the drawings, FIG. 22 illustrates a side view of shaft sleeve 211100 separated from golf club head 21101 (FIG. 21) according to the embodiment of FIG. 21. Meanwhile, FIG. 23 illustrates a cross-sectional view of the shaft sleeve 211100 along the cross-section line XXIII-XXIII in FIG. 22, according to the embodiment of FIG. 21.

Referring to FIG. 22, the shaft sleeve 211100 includes a shaft sleeve body 22103 and a shaft sleeve cap 22104. Additionally, in many embodiments, the shaft sleeve body 22103 may include a sleeve coupler set 223130 having one or more couplers protruding from the sleeve body outer wall 223130 and a shaft receiving portion 213200 (FIG. 21 ) may include a receiver coupler set configured to engage with the sleeve coupler set 223110 of the shaft sleeve 211100 to limit rotation of the shaft sleeve 211100 relative to the shaft receiver 213200. In these or other embodiments, sleeve coupler set 213110 may be similar to sleeve coupler set 3110 (FIG. 3); Sleeve body outer wall 223130 may be similar to sleeve outer wall 3130 (FIG. 3); and/or the receptacle coupler set may be similar to receptacle coupler set 3210 (FIG. 3). As described in more detail below, in many embodiments, shaft sleeve cap 22104 may include a ferrule and couple sleeve body 22103 with golf club shaft 21102 (FIG. 21). It may be possible to operate to do so.

Meanwhile, referring now to FIG. 23, shaft sleeve 211100 has (i) a shaft bore 233120 configured to receive the end of a golf club shaft 21102 (FIG. 21), and (ii) a bottom of the sleeve body 233192. fixed fastening bore (23105), (iii) bottom of the bore (23111); and/or (iv) the top of the shaft sleeve (231191). The fixed fastener bore 23105 may be configured to receive a fixed fastener (not shown) to secure the shaft sleeve 211100 to the shaft receiving portion 213200 (FIG. 21). Additionally, bore bottom 23111 may include the bottom surface (e.g., deepest surface) of shaft bore 232120. In many embodiments, shaft bore 233120 may be similar to shaft bore 3120 (FIG. 3); Fixed fastener bore 23105 may be similar or identical to a bore configured to receive fixed fastener 3400 (FIG. 3); Sleeve body bottom 233192 may be similar or identical to sleeve bottom 3192 (FIG. 3); The fixed fastener may be similar or identical to the fixed fastener 3400 (FIG. 3); and/or shaft sleeve top 231191 may be similar or identical to sleeve top 1191 (FIG. 3).

Additionally, when the shaft sleeve body 22103 is coupled to the shaft sleeve cap 22104, the shaft sleeve 211100 has a shaft sleeve height 23119, a shaft sleeve body height 23120, a shaft sleeve cap height 23121, and Shaft sleeve cap top height 23122 may be included. Shaft sleeve height 23119 may refer to the distance from the bottom of the sleeve body 233192 to the top of the shaft sleeve 231191 when measured approximately perpendicular to the bottom of the sleeve body 233192. Meanwhile, the shaft sleeve body height 23120 may refer to the distance from the bottom of the sleeve body 233192 to the top of the shaft sleeve body 22103 when measured parallel to the shaft sleeve height 23119, and the shaft sleeve cap height. 23121 may refer to the distance from the bottom of the shaft sleeve cap 22104 to the top of the shaft sleeve 231191 when measured parallel to the shaft sleeve height 23119. Additionally, shaft sleeve cap top height 23122 may refer to the difference between shaft sleeve height 23119 and shaft sleeve body height 23120.

For example, shaft sleeve height 23119 may be greater than or equal to approximately 1.78 inches and less than or equal to approximately 1.82 inches. In a specific example, shaft sleeve height 23119 may be approximately 1.8 inches.

Additionally, shaft sleeve body height 23120 may be greater than or equal to approximately 1.527 inches and less than or equal to approximately 1.567 inches. In a specific example, shaft sleeve body height 23120 may be approximately 1.547 inches.

Additionally, shaft sleeve cap height 23121 may be greater than or equal to approximately 0.43 inches and less than or equal to approximately 0.47 inches. In a specific example, shaft sleeve cap height 23121 may be approximately 0.45 inches.

Meanwhile, for example, the upper height of the shaft sleeve cap 23122 may be approximately 0.23 inches or more and approximately 0.27 inches or less. In a specific example, shaft sleeve body height 23122 may be approximately 0.25 inches.

In some embodiments, a fixed fastener (not shown) for insertion into fixed fastener bore 23105 may include titanium over steel. Additionally, the fixed fastener may include a fixed fastener mass. The fastener mass may be approximately 2.7 grams or more.

Referring to the following drawings, FIG. 24 illustrates a side view of shaft sleeve body 22103 separated from shaft sleeve cap 22104 (FIG. 22) according to the embodiment of FIG. 21. Shaft sleeve body 22103 may be associated with one or more zones 24106. For example, region 24106 may include fastener region 24107, intermediate region 24108, coupler region 24109, and cap interface region 24110.

Fastener region 24107 may refer to a portion of shaft sleeve body 22103 disposed between sleeve body bottom 233192 and bore bottom 23111 (FIG. 23). Meanwhile, coupler region 24109 extends from the lowest point of sleeve coupler set 223110 (e.g., the portion of sleeve coupler set 223110 closest to sleeve body bottom 233192 (FIG. 23)) of sleeve coupler set 223110. It may refer to the portion of the shaft sleeve body disposed up to the highest point (e.g., the portion of sleeve coupler set 223110 furthest from sleeve body bottom 233192). Meanwhile, the intermediate region 24108 may refer to the portion of the shaft sleeve body 22103 between the fastener region 24107 and the coupler region 24109, and the cap interface region 24110 may refer to the intermediate region 24108. May refer to the portion of shaft sleeve body 22103 opposite coupler region 24109.

When golf club head 21101 (FIG. 21) is swung and/or actuated to strike a golf ball, engager region 24107 and coupler region 24109 may be subject to high stresses. Meanwhile, the intermediate region 24108 and/or the cap interface region 24110 may experience lower stresses than the higher stresses experienced by the fastener region 24107 and coupler region 24109.

Securing shaft sleeve 211100 (FIG. 21) to shaft receiver 213200 (FIG. 21) using a secure fastener can help offset high stresses in fastener region 24107. Additionally, due to the high stresses that may be experienced in coupler region 24109, the coupler(s) of sleeve coupler set 223110 are solid lobes configured to provide additional thickness to the sleeve body walls of shaft sleeve body 22103. ) may include. Accordingly, the coupler(s) may reinforce the sleeve body wall in the coupler region 24109 to offset the high stresses in the coupler region 24109. The coupler(s) of sleeve coupler set 223110 are closest to the end of coupler region 24109 furthest from sleeve body bottom 233192 (e.g., where coupler region 24109 abuts cap interface region 23110). having a greater thickness and having the smallest thickness at the end of the coupler section 24109 closest to the bottom of the sleeve body 233192 (FIG. 23) (e.g., where coupler section 24109 abuts the middle section 24108). , may be inclined (linearly or curvedly). For example, the largest thickness may be approximately 0.75 inches thick and the smallest thickness may be approximately 0.020 inches thick. In many embodiments, beveling the coupler(s) of sleeve coupler set 223110 (FIG. 22) provides continuity (e.g., a smooth transition in thickness) between intermediate region 24108 and cap interface region 24110. It can be.

In some embodiments, the coupler(s) of sleeve coupler set 223110 may be symmetrical in profile. The length of the coupler(s) of the sleeve coupler set 223110 may be approximately 0.38 inches or less (e.g., in a portion of the sleeve body outer wall 223130 of the shaft sleeve body 42103), and may be approximately 0.38 inches or less (e.g., in the portion of the sleeve body outer wall 223130 of the shaft sleeve body 22103). at other portions of the sleeve body outer wall 423130] may be approximately 0.26 inches or greater.

In some embodiments, the coupler(s) of sleeve coupler set 223110 are positioned closer to the sleeve body outer wall of shaft sleeve body 22103 than to other portions (e.g., immediately or 180 degrees away from the first portion). The profile may be asymmetrical so that it is longer in the first part of (223130). The length of the coupler(s) of the sleeve coupler set 223110 may be approximately 0.38 inches or less (e.g., in a portion of the sleeve body outer wall 223130 of the shaft sleeve body 22103), and may be approximately 0.38 inches or less (e.g., in the portion of the sleeve body outer wall 223130 of the shaft sleeve body 22103). at other portions of the sleeve body outer wall 223130] may be approximately 0.260 inches or greater. In many embodiments, the coupler(s) of sleeve coupler set 223110 (FIG. 22) are positioned at the end of coupler region 24109 furthest from sleeve body bottom 233192 (e.g., coupler region 24109 is at the cap interface region). It may be longest at the portion of the sleeve body outer wall 223130 of the shaft sleeve body 22103 closest to the sleeve axis of the shaft sleeve body 22103 at the place where it contacts 24110. The sleeve axis may be similar or identical to sleeve axis 5150 (FIG. 5). In another manner, the coupler(s) of sleeve coupler set 223110 (FIG. 22) have a sleeve of shaft sleeve body 22103 that intersects a plane that includes the sleeve axis and extends approximately perpendicular to sleeve body bottom 233192. It may be longest at the portion of the body outer wall (223130).

Meanwhile, because the middle section 24108 experiences lower stresses when the golf club head 21101 is swung and/or actuated to strike a golf ball, the sleeve body wall of the shaft sleeve body is either part of the coupler section 24109 or It may be thinner in the middle section 24108 than the front, and/or the middle section 24108 may have holes or recesses that reduce the weight of the middle section 24108. For example, the sleeve body wall of shaft sleeve body 22103 in middle region 24108 may include a thickness (e.g., average thickness) of approximately 0.020 inches.

Now, returning to Figure 23, in some embodiments, shaft bore 233120 may include a width (e.g., diameter) of approximately 0.346 inches. In these embodiments, the width may include an average width and/or may be approximately constant throughout shaft bore 233120.

In various embodiments, shaft sleeve body 22103 has etched channels in shaft bore 233120 to provide a better surface area for epoxy bonding golf club shaft 21102 (FIG. 21) to shaft sleeve body 22103. 23112). Etch channel 23112 may be located in part or all of intermediate region 24108 (FIG. 24), such as the half of intermediate region 24108 (FIG. 24) closer to coupler region 24109 (FIG. 24). It may be placed in coupler zone 24109 (FIG. 24).

In these or other embodiments, shaft sleeve body 22103 may include a receiving groove 23113 (eg, an undercut notch). As explained in more detail below, the receiving groove 23113 is aligned with the extruded portion 25114 (FIG. 25) of the shaft sleeve cap 22104 to secure the shaft sleeve cap 22104 to the shaft sleeve body 22103. They communicate and can be interlocked. Accordingly, in many embodiments, receiving groove 23113 may supplement extrusion 25114 (FIG. 25). In some embodiments, receiving groove 23113 may be disposed in cap interface region 24110 (FIG. 24). In many embodiments, receiving groove 23113 may be disposed at the interface of cap interface region 24110 (FIG. 24) and coupler region 24109 (FIG. 24).

Referring to FIG. 25 , FIG. 25 illustrates a side view of shaft sleeve cap 22104 separated from shaft sleeve body 22103 (FIG. 22) according to the embodiment of FIG. 21.

In some embodiments, shaft sleeve cap 22104 may include a cap wall 25115. Cap wall 22115 may also include extrusions 25114 and one or more slits 25116.

Extrusion 25114 may include a lip extending outwardly from cap wall 25115, such as at an end of cap wall 25115. Accordingly, extrusion 25114 may include a width (e.g., diameter) that is greater than the width (e.g., diameter) of the remainder of cap wall 25515 and/or shaft bore 233120.

Meanwhile, the slit(s) 25116 cause the shaft sleeve cap 22104 to be elastically (e.g., temporarily) compressed when coupled to and separated from the shaft sleeve body 22103 (FIG. 22) ( It can be pulled towards itself (for example, axially). Accordingly, the extrusion portion 25114 may be positioned inside or outside the receiving groove 23113 (FIG. 23) to couple and separate the shaft sleeve cap 22104 to and from the shaft sleeve body 22103 (FIG. 22). In these embodiments, extrusion 25114 may be operable as a locking feature to lock or snap shaft sleeve cap 22104 in place.

Shaft sleeve cap 22104 may also be operable to provide damping (e.g., vibration and/or stress reduction) between golf club shaft 21102 (FIG. 21) and shaft sleeve body 22103 (FIG. 22). For example, shaft sleeve cap 22104 can act as a “shaft pillow” by increasing the concentricity of golf club shaft 21102 (FIG. 21) within shaft sleeve body 22103 (FIG. 22). In many embodiments, the concentricity of golf club shaft 21102 (FIG. 21) within shaft sleeve body 22103 (FIG. 22) may be strongly correlated with the durability of golf club shaft 21102 (FIG. 21). Accordingly, the shaft sleeve cap 22104 can prevent damage to the golf club shaft 21102 (FIG. 21) and increase the overall lifespan of the golf club head 21101 (FIG. 21).

26, FIG. 26 illustrates an elevation view of shaft sleeve cap 22104 separated from shaft sleeve body 22103 (FIG. 22) according to the embodiment of FIG. 21. In many embodiments, shaft sleeve cap 22104 may include a cap bore 26116, a cap bore width 26117, and one or more centering features 26118. In some embodiments, shaft bore 233120 (FIG. 23) may also include cap bore width 26117. Cap bore width 26117 may refer to the width (e.g., diameter) of cap bore 26116. In these embodiments, the width may include the average width (eg, average diameter).

Cap bore width 26117 may be greater than the width (e.g., diameter) of golf club shaft 21102 (FIG. 21). Dissimilarities in the cap bore width 26117 and the width of the golf club shaft 21102 (FIG. 21) can result in mismatches in shaft orientation. Accordingly, to prevent misalignment of golf club shaft 21102 (FIG. 21), centering feature(s) 26118 may be extruded from the inner surface of cap bore 26116. The distance that centering feature(s) 26118 extends from the interior surface of cap bore 26116 provides an effective width (e.g., diameter) whose collective size is approximately equal to or less than golf club shaft 21102 (FIG. 21). ) may be at least sufficient to provide within. Cap bore width 26117 is greater than the effective width of cap bore 26116 resulting from centering feature(s) 26118. Additionally, cap bore width 26117 may be similar or identical to the width of shaft bore 233120 (FIG. 23). Therefore, when golf club shaft 21102 (FIG. 21) is introduced into shaft sleeve cap 22104 and shaft sleeve body 22103 (FIG. 23), centering feature(s) 26118 are aligned with golf club shaft 21102. ) (FIG. 21) can be operated to approximately center the cap bore 26616 and about the sleeve axis as described above.

Referring again to FIG. 22, shaft sleeve body 22103 may include any suitable material. For example, in some embodiments, shaft sleeve body 22103 may include a metal or metal alloy (eg, aluminum alloy). In these examples, the aluminum alloy may include at least about 70% aluminum and up to about 75% aluminum. In more specific examples, the aluminum alloy may include approximately 70%, 71%, 72%, 73%, 74%, or 75% aluminum. Likewise, shaft sleeve cap 22104 may include any suitable material configured to allow cap wall 25115 (FIG. 25) to be elastically compressed, as described above. For example, shaft sleeve cap 22104 may include a polymer material.

In many embodiments, shaft sleeve body 22103 can include a shaft sleeve body mass and shaft sleeve cap 22104 can include a shaft sleeve cap mass. Additionally, shaft sleeve 211100 may include a shaft sleeve mass that includes a shaft sleeve body mass and a shaft sleeve cap mass. The shaft sleeve mass may be similar to the mass of the sleeve described above with respect to sleeve 1100 (FIG. 1).

In these or other embodiments, the shaft sleeve mass may be approximately 4.3 grams or less. Additionally, the shaft sleeve body mass may be greater than or equal to approximately 3.3 grams and less than or equal to approximately 3.8 grams. Moreover, the shaft sleeve cap mass may be greater than or equal to approximately 0.5 grams and less than or equal to approximately 1.0 grams. In various embodiments, the shaft sleeve mass may be approximately 0.5 grams less than the mass of sleeve 1100 (FIG. 1). Additionally, the shaft sleeve mass combined with the fastener mass may be approximately 7 grams or more. Accordingly, in various embodiments, shaft sleeve 211100 may provide a weight advantage over shaft sleeve 1100 (Figure 1).

Referring to FIG. 21, golf club head 21101 may include a disassembled club head mass and an assembled club head mass. The disassembled club head mass may be similar to the disassembled club head mass described above for golf club head 101 (FIG. 1), and the assembled club head mass may be similar to the disassembled club head mass described above for golf club head 101 (FIG. 1). The mass of an assembled club head may be similar.

In some embodiments, the disassembled club head mass may be greater than or equal to approximately 185 grams and less than or equal to approximately 205 grams. In these or other embodiments, the disassembled club head mass may be approximately 192 grams or more.

In some embodiments, the assembled club head mass may be greater than or equal to approximately 188 grams and less than or equal to approximately 213 grams. In these or other embodiments, the assembled club head mass may be approximately 199 grams or more.

Additionally, the ratio of shaft sleeve mass to disassembled club head may be approximately 2.0%, 2.2%, or 2.4% or less; The ratio of shaft sleeve mass to assembled club head mass may be approximately 1.95%, 2.16%, or 2.35% or less; The ratio of shaft sleeve mass and fastener mass to disassembled club head mass may be approximately 3.4%, 3.6%, or 3.8% or less; and/or the ratio of the shaft sleeve mass and fastener mass to the assembled club head mass may be less than or equal to approximately 3.3%, 3.5%, or 3.7%.

Meanwhile, golf club head 21101 may include an assembled club head CG related to an assembled club head CG vertical distance, and shaft sleeve 211100 may include a shaft sleeve CG related to a shaft sleeve CG vertical distance. . In these embodiments, the assembled club head CG may be similar or identical to assembled club head CG 1050 (FIG. 1); The assembled club head CG vertical distance may be similar or the same as assembled club head CG vertical distance 1058 (FIG. 1); Shaft sleeve CG may be similar or identical to shaft sleeve CG 1032 (FIG. 1); and/or the shaft sleeve CG vertical distance may be similar or identical to shaft sleeve CG vertical distance 1159 (FIG. 1). In many embodiments, the shaft sleeve CG vertical distance may be approximately 0.010 inches (approximately 0.254 millimeters) or more, but approximately 0.050 inches (approximately 1.27 millimeters) or less than shaft sleeve CG vertical distance 1159 (Figure 1). For example, the shaft sleeve CG vertical distance may be greater than or equal to about 44.9 millimeters from the bottom of the sole of the golf club head 21101 and less than or equal to about 46 millimeters from the bottom of the sole of the golf club head 21101. In certain examples, the shaft sleeve CG vertical distance is approximately 44.9 millimeters, 45.0 millimeters, 45.1 millimeters, 45.2 millimeters, 45.3 millimeters, 45.4 millimeters, 45.5 millimeters, 45.6 millimeters, 45.7 millimeters, 45.8 millimeters from the bottom of the sole of golf club head 21101. , 45.9 millimeters, 46.0 millimeters or more. In some embodiments, the shaft sleeve CG vertical distance of golf coupling mechanism 211000 is approximately 44.9 millimeters, 45.0 millimeters, 45.1 millimeters, 45.2 millimeters, 45.3 millimeters, 45.4 millimeters, 45.5 millimeters from the bottom of the sole of golf club head 41101. , 45.6 millimeters, 45.7 millimeters, 45.8 millimeters, 45.9 millimeters, or 46.0 millimeters or less. The shaft sleeve CG vertical distance of golf coupling mechanism 411000 may be 44.9 millimeters from the bottom of the sole of golf club head 41101. The bottom of the soul may be similar or identical to the bottom of the soul 10141 (FIG. 1).

Referring to Figure 27, Figure 27 illustrates a flow diagram of a method 27000 according to an embodiment. In many embodiments, method 27000 may include a method of manufacturing a golf club head of one or more components of a golf club head. The golf club head may be similar or identical to golf club head 21101 (FIG. 21).

Method 27000 may include providing a shaft sleeve (27001). The shaft sleeve may be similar or identical to shaft sleeve 211100 (FIG. 21). Figure 28 illustrates example step 27001 according to the embodiment of Figure 27.

For example, in Figure 28, step 27001 may include step 28001 of providing (e.g., manufacturing) a shaft sleeve body. The shaft sleeve may be similar or identical to shaft sleeve body 22103 (FIG. 22).

Step 27002 may also include step 28002 of providing (e.g., manufacturing) a shaft sleeve cap. The shaft sleeve cap may be similar or identical to shaft sleeve cap 22104 (FIG. 22).

Now referring to FIG. 27 , method 27000 may include providing (e.g., manufacturing) a golf club head (27002). The golf club head may be similar or identical to golf club head 21101 (FIG. 21). In some embodiments, step 27001 may be performed before step 27002, and may be performed after step 27002. In other embodiments, steps 27001 and 27002 may be performed approximately simultaneously.

Method 27000 may also include inserting a shaft sleeve into a hosel bore of a golf club head (step 27003). The hosel bore may be similar or identical to the hosel bore described above with respect to golf club head 21101 (FIG. 21).

Method 2700 may also include inserting a golf club shaft into a shaft bore (step 27004). The golf club shaft may be similar or identical to golf club shaft 21102 (FIG. 21) and the shaft bore may be similar or identical to shaft bore 233120 (FIG. 23).

Meanwhile, method 2700 may include inserting a shaft sleeve cap into a shaft bore (step 27005). In some embodiments, step 27004 may be performed before step 27005 or may be performed after step 27002. In other embodiments, steps 27004 and 27005 may be performed approximately simultaneously. In further embodiments, step 27003 may be performed before step 27004 and/or step 27005, and may be performed after step 27004 and/or step 27005. In many embodiments, one or more of steps 27001-27003 may be performed before one or more of steps 27004-27005, or may be performed after one or more of steps 27004-27005.

Additionally, method 27000 may include securing the shaft sleeve to the hosel of the golf club head using a fastener (27006). The hosel may be similar or identical to the hosel described above with respect to golf club head 21101 (FIG. 21), and the fastening portion may be similar or identical to the fastening portion described above with respect to golf club head 21101 (FIG. 21). You can.

Solid ribbed cap coupling mechanism

Referring to FIG. 29 , FIG. 29 illustrates a front perspective view of a golf club head 41101 with a golf coupling mechanism 411000 according to an embodiment. In many embodiments, golf coupling mechanism 411000 may include a shaft sleeve 411100 configured to couple to an end of a golf club shaft, such as golf club shaft 211102. In various embodiments, golf club head 41101 may be similar to golf club head 101 (Figure 1); Golf coupling mechanism 411000 may be similar to golf coupling mechanism 1000 (FIG. 1); and/or golf club shaft 41102 may be similar or identical to golf club shaft 102 (FIG. 1). Accordingly, the golf coupling mechanism 411000 may include a shaft sleeve 411100 and a shaft receiving portion 413200. Meanwhile, shaft sleeve 411100 may be similar to shaft sleeve 1100 (FIG. 1), and/or shaft receiving portion 413200 may be similar to shaft receiving portion 3200 (FIG. 3).

30, FIG. 30 illustrates a side view of shaft sleeve 411100 separated from golf club head 21101 (FIG. 29) according to the embodiment of FIG. 29. Meanwhile, FIG. 31 illustrates a cross-sectional view of the shaft sleeve 411100 along the cross-section line XXXIII-XXXIII in FIG. 30, according to the embodiment of FIG. 29.

Referring to FIG. 30, the shaft sleeve 411100 includes a shaft sleeve body 42103 and a shaft sleeve cap 42104. Additionally, in many embodiments, the shaft sleeve body 22103 may include a sleeve coupler set 223130 having one or more couplers protruding from the sleeve body outer wall 423130, and a shaft receiving portion 413200 (FIG. 29 ) may include a receiver coupler set configured to engage with the sleeve coupler set 423110 of the shaft sleeve 411100 to limit rotation of the shaft sleeve 411100 relative to the shaft receiver 413200. In these or other embodiments, sleeve coupler set 413110 may be similar to sleeve coupler set 3110 (FIG. 3); Sleeve body outer wall 423130 may be similar to sleeve outer wall 3130 (FIG. 3); and/or the receptacle coupler set may be similar to receptacle coupler set 3210 (FIG. 3). As described in more detail below, in many embodiments, shaft sleeve cap 42104 may include a ferrule and couple sleeve body 42103 with golf club shaft 41102 (FIG. 29). It may be possible to operate to do so.

Meanwhile, referring now to FIG. 31, shaft sleeve 411100 has (i) a shaft bore 433120 configured to receive the end of a golf club shaft 41102 (FIG. 29), and (ii) a sleeve body bottom 433192. Fixed fastening bore (43105), (iii) bottom of bore (43111); (iv) a cap bore 42110 configured to receive an end of a golf club shaft 41102 and coupled to a shaft bore 433120 and/or (v) a shaft sleeve top 431191. The fixed fastener bore 43105 may be configured to receive a fixed fastener (not shown) to secure the shaft sleeve 411100 to the shaft receiving portion 413200 (FIG. 29). Additionally, bore bottom 43111 may include the bottom surface (e.g., deepest surface) of shaft bore 432120. In many embodiments, shaft bore 433120 may be similar to shaft bore 3120 (FIG. 3); Fixed fastener bore 43105 may be similar or identical to a bore configured to receive fixed fastener 3400 (FIG. 3); Sleeve body bottom 433192 may be similar or identical to sleeve bottom 3192 (FIG. 3); The fixed fastener may be similar or identical to the fixed fastener 3400 (FIG. 3); and/or shaft sleeve top 431191 may be similar or identical to sleeve top 1191 (FIG. 3).

Additionally, when the shaft sleeve body 42103 is coupled to the shaft sleeve cap 42104, the shaft sleeve 411100 has a shaft sleeve height 43119, a shaft sleeve body height 43120, a shaft sleeve cap height 43121, and Shaft sleeve cap top height 23122 may be included. Shaft sleeve height 43119 may refer to the distance from the bottom of the sleeve body 433192 to the top of the shaft sleeve 431191 when measured approximately perpendicular to the bottom of the sleeve body 433192. Meanwhile, the shaft sleeve body height 43120 may refer to the distance from the bottom of the sleeve body 433192 to the top of the shaft sleeve body 42103 when measured parallel to the shaft sleeve height 43119, and the shaft sleeve cap height. 43121 may refer to the distance from the bottom of the shaft sleeve cap 42104 to the top of the shaft sleeve 431191 when measured parallel to the shaft sleeve height 43119. Additionally, shaft sleeve cap top height 43122 may refer to the difference between shaft sleeve height 43119 and shaft sleeve body height 43120.

For example, shaft sleeve height 43119 may be greater than or equal to approximately 1.78 inches and less than or equal to approximately 1.82 inches. In a specific example, shaft sleeve height 43119 may be approximately 1.8 inches.

Additionally, shaft sleeve body height 43120 may be greater than or equal to approximately 1.529 inches and less than or equal to approximately 1.569 inches. In a specific example, shaft sleeve body height 43120 may be approximately 1.549 inches.

Additionally, shaft sleeve cap height 43121 may be greater than or equal to approximately 0.46 inches and less than or equal to approximately 0.50 inches. In a specific example, shaft sleeve cap height 43121 may be approximately 0.48 inches.

Meanwhile, for example, the upper height of the shaft sleeve cap 43122 may be approximately 0.23 inches or more and approximately 0.27 inches or less. In a specific example, shaft sleeve body height 23122 may be approximately 0.25 inches.

In some embodiments, a fixed fastener (not shown) for insertion into fixed fastener bore 23105 may include titanium over steel. Additionally, the fixed fastener may include a fixed fastener mass. The fastener mass may be approximately 2.7 grams or more.

Referring to the following drawings, FIG. 32 illustrates a side view of shaft sleeve body 42103 separated from shaft sleeve cap 42104 (FIG. 30) according to the embodiment of FIG. 29. Shaft sleeve body 42103 may be associated with one or more zones 44106. For example, region 44106 may include fastener region 44107, intermediate region 44108, coupler region 44109, and cap interface region 44110.

Fastener region 44107 may refer to a portion of shaft sleeve body 42103 disposed between sleeve body bottom 433192 and bore bottom surface 43111 (FIG. 31). Meanwhile, coupler section 424109 extends from the lowest point of sleeve coupler set 423110 (e.g., the portion of sleeve coupler set 423110 closest to sleeve body bottom 433192 (FIG. 31)) of sleeve coupler set 423110. It may refer to the portion of the shaft sleeve body disposed up to the highest point (e.g., the portion of the sleeve coupler set 423110 furthest from the bottom of the sleeve body 433192). Meanwhile, the intermediate region 44108 may refer to the portion of the shaft sleeve body 42103 between the fastener region 44107 and the coupler region 44109, and the cap interface region 44110 may refer to the intermediate region 44108. May refer to the portion of shaft sleeve body 42103 opposite coupler region 44109. Also referring to FIG. 32 , cap interface region 44110 ( FIG. 32 ) may further include an upper ring 44115 ( FIG. 32 ).

When golf club head 41101 (FIG. 29) is swung and/or actuated to strike a golf ball, engager region 44107 and coupler region 44109 may be subject to high stresses. Meanwhile, the intermediate region 44108 and/or the cap interface region 44110 may experience lower stresses than the higher stresses experienced by the fastener region 44107 and coupler region 44109.

Securing shaft sleeve 411100 (FIG. 29) to shaft receiver 413200 (FIG. 29) using a secure fastener can help offset high stresses in fastener region 44107. Additionally, due to the high stresses that may be experienced in the coupler region 44109, the coupler(s) of the sleeve coupler set 423110 are solid lobes configured to provide additional thickness to the sleeve body walls of the shaft sleeve body 42103. ) may include. Accordingly, the coupler(s) may reinforce the sleeve body wall in the coupler region 44109 to offset the high stresses in the coupler region 44109. The coupler(s) of sleeve coupler set 423110 are closest to the end of coupler region 44109 furthest from sleeve body bottom 433192 (e.g., where coupler region 44109 abuts cap interface region 44110). having a greater thickness and having the smallest thickness at the end of the coupler section 44109 closest to the sleeve body bottom 433192 (FIG. 31) (e.g., where coupler section 44109 abuts middle section 44108). , may be inclined (linearly or curvedly). For example, the largest thickness may be approximately 0.75 inches thick and the smallest thickness may be approximately 0.020 inches thick. In many embodiments, beveling the coupler(s) of sleeve coupler set 423110 (FIG. 30) provides continuity (e.g., a smooth transition in thickness) between intermediate region 44108 and cap interface region 44110. It can be.

In some embodiments, the coupler(s) of sleeve coupler set 423110 may be symmetrical in profile. The length of the coupler(s) of sleeve coupler set 423110 may be approximately 0.38 inches or less (e.g., in a portion of the sleeve body outer wall 423130 of shaft sleeve body 42103), and may be approximately 0.38 inches or less (e.g., in a portion of the sleeve body outer wall 423130 of shaft sleeve body 42103). at other portions of the sleeve body outer wall 423130] may be approximately 0.26 inches or greater.

In some embodiments, the coupler(s) of sleeve coupler set 423110 are positioned closer to the sleeve body outer wall of shaft sleeve body 42103 than to other portions (e.g., immediately or 180 degrees away from the first portion). The profile may be asymmetrical so that it is longer in the first portion of 423130. The length of the coupler(s) of sleeve coupler set 423110 may be approximately 0.38 inches or less (e.g., in a portion of the sleeve body outer wall 423130 of shaft sleeve body 42103), and may be approximately 0.38 inches or less (e.g., in a portion of the sleeve body outer wall 423130 of shaft sleeve body 42103). at other portions of the sleeve body outer wall 423130] may be approximately 0.260 inches or greater. In many embodiments, the coupler(s) of sleeve coupler set 423110 (FIG. 30) are located at the end of coupler region 44109 (FIG. 32) furthest from sleeve body bottom 433192 (e.g., coupler region 44109). It may be longest at the portion of the sleeve body outer wall 423130 of the shaft sleeve body 42103 closest to the sleeve axis of the shaft sleeve body 42103 [where it contacts the cap interface area 44110]. The sleeve axis may be similar or identical to sleeve axis 5150 (FIG. 5). In another manner, the coupler(s) of sleeve coupler set 423110 (FIG. 30) have a sleeve of shaft sleeve body 42103 that intersects a plane that includes the sleeve axis and extends approximately perpendicular to sleeve body bottom 433192. It may be longest at the portion of the body outer wall (423130).

Meanwhile, because the middle section 44108 experiences lower stresses when the golf club head 41101 is swung and/or actuated to strike a golf ball, the sleeve body wall of the shaft sleeve body is either part of the coupler section 44109 or It may be thinner in the middle section 44108 than the front, and/or the middle section 44108 may have holes or recesses that reduce the weight of the middle section 44108. For example, the sleeve body wall of shaft sleeve body 42103 in middle region 44108 may include a thickness (e.g., average thickness) of approximately 0.020 inches.

Now, turning to FIG. 31 , in some embodiments, shaft sleeve body 42103 may include a width (e.g., outer diameter). The outer diameter of the shaft sleeve body 42103 may be approximately 0.405 inches or greater and approximately 0.445 inches or less. In a specific example, the outer diameter of the shaft sleeve body may be 0.425 inches.

In some embodiments, the shaft bore may include a width (e.g., diameter) (FIG. 31). The diameter of the shaft bore 433120 may decrease from the middle of the shaft bore to the bottom of the bore 43111. The diameter of the bore cap may be similar or identical to the diameter of the intermediate shaft bore 433130. The diameter of bore bottom 43150 may be greater than or equal to approximately 0.320 inches and less than or equal to approximately 0.360 inches. In a specific example, the diameter of the bottom of the bore may be 0.340 inches. The diameter of intermediate shaft bore 433130 may be approximately 0.326 inches or greater and approximately 0.366 inches or less. In a specific example, the diameter of intermediate shaft bore 433130 may be 0.346 inches. The diameter of cap bore 42115 may be approximately 0.326 inches or greater and approximately 0.366 inches or less. In a specific example, the diameter of cap bore 42115 may be 0.346 inches.

In various embodiments, shaft sleeve body 42103 has etched channels in shaft bore 433120 to provide a better surface area for epoxy bonding golf club shaft 41102 (FIG. 29) to shaft sleeve body 42103. 43112). Etch channel 43112 may be located in part or all of middle region 44108 (FIG. 32), such as the half of middle region 44108 (FIG. 32) closer to coupler region 44109 (FIG. 32). It may be placed in coupler zone 44109 (FIG. 32).

In these or other embodiments, shaft sleeve body 42103 may include a receiving groove 43113 (eg, an undercut notch). As explained in more detail below, the receiving groove 43113 (FIG. 31) is formed on the extruded portion 45114 of the shaft sleeve cap 42104 ( 33) and may be interlocked. Accordingly, in many embodiments, receiving groove 43113 (FIG. 34) of shaft sleeve body 42103 may supplement extrusion 45114 (FIG. 33). In some embodiments, receiving groove 43113 may be disposed in cap interface region 44110 (FIG. 32). In many embodiments, receiving groove 43113 (FIG. 35B) may be disposed at the interface of cap interface region 44110 (FIG. 32) and coupler region 32 (FIG. 32) (see also FIG. 31). .

Referring to FIG. 33A , FIG. 33A illustrates an upright side view of shaft sleeve cap 42104 separated from shaft sleeve body 42103 (FIG. 30) according to the embodiment of FIG. 29. FIG. 33B illustrates an angled top view of shaft sleeve cap 42104 separated from shaft sleeve body 42103 ( FIG. 30 ) according to the embodiment of FIG. 29 . FIG. 34 illustrates a cross-sectional view of shaft sleeve cap 42104 along cross-section line XLV-XLV in FIG. 33A, according to the embodiment of FIG. 29. Shaft sleeve cap 42104 may further include a cap wall 45040 (FIG. 33A). The cap wall may include an outer cap wall 45115 at one end of the cap wall and an inner cap wall 45120 opposite the outer cap wall.

Referring to FIG. 33A , shaft sleeve cap 42104 may include an upper cap region 45050 and a lower cap region 45060. Upper cap region 45050 may include an upper ring 45045 at the top of upper cap region 45050 and a lower edge shelf 45055 at a lower end of upper cap region 45050. Upper cap region 45050 increases in diameter from top to bottom toward lower edge shelf 45055. Lower cap region 45060 has a smaller outer diameter than upper cap region 45050.

Lower cap region 45060 may include an extrusion 45114 that protrudes from outer cap wall 45115. Extrusion 45114 may include a lip extending outwardly from outer cap wall 45115 (FIG. 34). Accordingly, extrusion 45114 has a width (e.g., diameter) 45300 greater than the width 45200 of the remaining cap wall of lower cap region 45060 and/or the diameter of shaft bore 43120 (FIGS. 33A and 34). ) may include. The width 45400 of the bottom shelf 45055 of the upper cap region 45050 is greater than the width 45300 of the extrusion 45114 of the lower cap region 45060 (FIG. 34).

Lower cap region 45060 of shaft sleeve cap 41204 fits within cap interface region 44110 and coupler region 44109 of shaft sleeve body 42103 (FIG. 32). In one embodiment, the extrusion 45114 of the lower cap region 45060 of the shaft sleeve cap 41204 has a receiving groove 43113 to engage and disengage the shaft sleeve cap 41204 relative to the shaft sleeve body 42103. ) (Figure 34). Receiving groove 43113 (FIG. 34) may complement extrusion 45114 (FIG. 33) of lower cap region 45060. In these embodiments, extrusion 45115 may be operable as a locking feature or snap in place between receiving grooves 43113 (FIG. 34) of shaft sleeve body 42103 (FIG. 32). In some embodiments, extrusion 45115 may extend at an upward angle to allow for bending when shaft sleeve cap 41204 is fitted within shaft sleeve body 42103 (FIG. 32). With further reference to FIG. 32 , when fitting the shaft sleeve cap 41204 to the shaft sleeve body 42103, the bottom shelf 45055 of the shaft sleeve cap 42104 is in contact with the cap interface area 44115 of the shaft sleeve body 42103. It is inserted into the top of the upper ring (Figure 32).

Shaft sleeve cap 42104 may include shaft bore 43120 (FIG. 33B). Shaft bore diameter 43130 is constant across both upper cap region 45050 and lower cap region 45060. The combination of shaft sleeve cap 42104 (upper and lower sections), cap interface section 44110 and coupler section 44109 of shaft sleeve body 42103 prevents epoxy leakage during the assembly process.

Shaft sleeve cap 42104 is one that protrudes or extends into shaft bore 43120 of shaft sleeve cap 42104 parallel to each other along inner cap wall 45120 from upper cap region 45050 to lower cap region 45060. It may include more than one rib 45202 (FIG. 33B). Rib 45202 may provide additional sealing and securely couple shaft sleeve cap 41204 within shaft sleeve body 42103. Rib 45202 may also firmly center the shaft of golf club 41102 within shaft sleeve 411100.

The shaft sleeve cap 42104 provides stability compared to the shaft sleeve body 42103 without the shaft sleeve cap 42104. (1) overall design of shaft sleeve cap 42104, (2) ribs 45202 on inner cap wall 45120 of shaft sleeve cap 42104, (3) outer cap wall 45115 of shaft sleeve cap 42104. ) extruded portion 45115 on (4) the receiving groove 43113 of the shaft sleeve body 42103, and (5) the bore diameter decreasing from the middle of the shaft bore to the bottom surface of the bore 43111 of the shaft sleeve body 42103. A combination of individually or in any combination thereof may center the shaft of the golf club 41102 within both the top and bottom of the shaft sleeve 411100 and provide greater stability to the shaft 41102 of FIG. . Centering increases the concentricity of the golf club shaft and reduces stresses on the shaft during swing of the golf club head and impact with the golf ball.

These factors, alone or in combination, also provide damping (e.g., vibration) and stress reduction between golf club shaft 41102 (FIG. 29) and shaft sleeve body 42103 (FIG. 29). For example, shaft sleeve cap 42104 can act as a “shaft pillow” by increasing the concentricity of golf club shaft 41102 (FIG. 30) within shaft sleeve body 42103 (FIG. 31). In many embodiments, the concentricity of golf club shaft 41102 (FIG. 29) within shaft sleeve body 42103 (FIG. 30) may be strongly correlated with the durability of golf club shaft 41102 (FIG. 31). Thus, (1) rib 45202 on inner cap wall 45120 of shaft sleeve cap 42104, (2) extrusion 45115 on outer cap wall 45115 of shaft sleeve cap 42104, (3) the receiving groove 43113 of the shaft sleeve body 42103, and (4) the bore diameter decreasing from the middle of the shaft bore to the bore bottom 43111 of the shaft sleeve body 42103, individually or in any combination thereof. Damage of the club shaft 41102 (FIG. 29) can be prevented and the overall lifespan of the golf club head 41101 (FIG. 29) can be increased.

Referring again to FIG. 30, shaft sleeve body 42103 may include any suitable material. For example, in some embodiments, shaft sleeve body 22103 may include a metal or metal alloy (eg, aluminum alloy). In these examples, the aluminum alloy may include at least about 70% aluminum and up to about 75% aluminum. In more specific examples, the aluminum alloy may include approximately 70%, 71%, 72%, 73%, 74%, or 75% aluminum.

Shaft sleeve cap 42104 may include any suitable material configured to allow cap wall 25115 (FIG. 25) to be elastically compressed, as described above. For example, shaft sleeve cap 22104 can include a polymer plastic material, which can be a thermoplastic material, or a soft polymer plastic according to Shore D durometer grades. Soft polymer plastics cannot have a Shore D durometer rating greater than 40, 45, 50, 55 or 60. Soft polymer plastics cannot have a Shore D durometer rating greater than 55. Polymeric plastic materials may be comprised of polystyrene, polyvinyl chloride, nylon, polymethacrylate, rubber, polycarbonate, synthetic rubber, or copolymers thereof.

In many embodiments, shaft sleeve body 42103 can include a shaft sleeve body mass and shaft sleeve cap 42104 can include a shaft sleeve cap mass. Additionally, shaft sleeve 411100 may include a shaft sleeve mass that includes a shaft sleeve body mass and a shaft sleeve cap mass. The shaft sleeve mass may be similar to the mass of the sleeve described above with respect to sleeve 1100 (FIG. 1).

In these or other embodiments, the shaft sleeve mass may be greater than approximately 4.0 grams, 4.1 grams, 4.2 grams, 4.3 grams, 4.4 grams, 4.5 grams, 4.6 grams, 4.7 grams, 4.8 grams, 4.9 grams, or 5.0 grams. . Additionally, the shaft sleeve body mass may be greater than or equal to approximately 4.2 grams and less than or equal to approximately 4.8 grams. The shaft sleeve body mass may be 4.5 grams. Moreover, the shaft sleeve cap mass may be approximately 3.8 grams, 3.9 grams, 4.0 grams, 4.1 grams, 4.2 grams, 4.3 grams, or 4.4 grams. The shaft sleeve cap mass may be greater than or equal to approximately 0.1 grams and less than or equal to approximately 0.7 grams. In various embodiments, the shaft sleeve mass may be approximately 0.4 grams less than the mass of sleeve 1100 (FIG. 1). Additionally, the shaft sleeve mass combined with the fastener mass may be approximately 7.2 grams or more. Accordingly, in various embodiments, shaft sleeve 411100 may provide a weight advantage over shaft sleeve 1100 (FIG. 1).

Referring to FIG. 29, golf club head 41101 may include a disassembled club head mass and an assembled club head mass. The disassembled club head mass may be similar to the disassembled club head mass described above for golf club head 101 (FIG. 1), and the assembled club head mass may be similar to the disassembled club head mass described above for golf club head 101 (FIG. 1). The mass of an assembled club head may be similar.

In some embodiments, the disassembled club head mass may be greater than or equal to approximately 185 grams and less than or equal to approximately 205 grams. In these or other embodiments, the disassembled club head mass may be approximately 192 grams or more.

In some embodiments, the assembled club head mass may be greater than or equal to approximately 188 grams and less than or equal to approximately 213 grams. In these or other embodiments, the assembled club head mass may be approximately 199 grams or more.

Additionally, the ratio of shaft sleeve mass to disassembled club head may be approximately 2.0%, 2.2%, or 2.4% or less; The ratio of shaft sleeve mass to assembled club head mass may be approximately 1.95%, 2.16%, or 2.35% or less; The ratio of shaft sleeve mass and fastener mass to disassembled club head mass may be approximately 3.4%, 3.6%, or 3.8% or less; and/or the ratio of the shaft sleeve mass and fastener mass to the assembled club head mass may be less than or equal to approximately 3.3%, 3.5%, or 3.7%.

Meanwhile, golf club head 41101 may include an assembled club head CG related to an assembled club head CG vertical distance, and shaft sleeve 411100 may include a shaft sleeve CG related to a shaft sleeve CG vertical distance. . In these embodiments, the assembled club head CG may be similar or identical to assembled club head CG 1050 (FIG. 1); The assembled club head CG vertical distance may be similar or the same as assembled club head CG vertical distance 1058 (FIG. 1); Shaft sleeve CG may be similar or identical to shaft sleeve CG 1032 (FIG. 1); and/or the shaft sleeve CG vertical distance may be similar or equal to shaft sleeve CG vertical distance 1159 (FIG. 1) as measured from the bottom of the club head.

In many embodiments, the shaft sleeve CG vertical distance of shaft sleeve 411100 (FIG. 31) is greater than the shaft sleeve CG vertical distance of shaft sleeve 211100 (FIG. 23) by approximately 0.052 inches (approximately 1.32 millimeters) greater than or equal to 0.092 inches ( Approximately 2.34 millimeters) or less. The shaft sleeve CG vertical distance of shaft sleeve 411100 (FIG. 31) may be approximately 0.042 inches (approximately 1.07 millimeters) greater than and approximately 0.062 inches (approximately 1.58 millimeters) less than the shaft sleeve CG vertical distance of shaft sleeve 1159 (FIG. 1). there is. The shaft sleeve CG vertical distance of the golf coupling mechanism 411000 may be greater than approximately 43.5 millimeters from the bottom of the sole of the golf club head 41101 and less than or equal to approximately 47.0 millimeters from the bottom of the sole of the golf club head 41101. In some embodiments, the shaft sleeve CG vertical distance of golf coupling mechanism 411000 is approximately 43.5 millimeters, 43.6 millimeters, 43.7 millimeters, 43.8 millimeters, 43.9 millimeters, 44.0 millimeters, 44.1 millimeters from the bottom of the sole of golf club head 41101. , 44.2 mm, 44.3 mm, 44.4 mm, 44.5 mm, 44.6 mm, 44.7 mm, 44.8 mm, 44.9 mm, 45.0 mm, 45.1 mm, 45.2 mm, 45.3 mm, 45.4 mm, 45 .5 millimeters, 45.6 millimeters, 45.7 millimeters, 45.8 It may be greater than or equal to millimeters, 45.9 millimeters, 46.0 millimeters, 46.1 millimeters, 46.2 millimeters, 46.3 millimeters, 46.4 millimeters, 46.5 millimeters, 46.6 millimeters, 46.7 millimeters, 46.8 millimeters, 46.9 millimeters, or 47.0 millimeters. In some embodiments, the shaft sleeve CG vertical distance of golf coupling mechanism 411000 is approximately 43.5 millimeters, 43.6 millimeters, 43.7 millimeters, 43.8 millimeters, 43.9 millimeters, 44.0 millimeters, 44.1 millimeters from the bottom of the sole of golf club head 41101. , 44.2 mm, 44.3 mm, 44.4 mm, 44.5 mm, 44.6 mm, 44.7 mm, 44.8 mm, 44.9 mm, 45.0 mm, 45.1 mm, 45.2 mm, 45.3 mm, 45.4 mm, 45 .5 millimeters, 45.6 millimeters, 45.7 millimeters, 45.8 It may be less than or equal to a millimeter, 45.9 millimeters, 46.0 millimeters, 46.1 millimeters, 46.2 millimeters, 46.3 millimeters, 46.4 millimeters, 46.5 millimeters, 46.6 millimeters, 46.7 millimeters, 46.8 millimeters, 46.9 millimeters, or 47.0 millimeters. The shaft sleeve CG vertical distance of golf coupling mechanism 411000 may be 45.3 millimeters from the bottom of the sole of golf club head 41101. The bottom of the soul may be similar or identical to the bottom of the soul 10141 (FIG. 1).

In some embodiments, the shaft sleeve CG vertical distance of golf coupling device 411000 is approximately 32.0 millimeters, 32.1 millimeters, 32.3 millimeters, 32.4 millimeters, 32.5 millimeters, 32.6 millimeters, 32.7 millimeters from the bottom of the sole of golf club head 41101. , 32.8 mm, 32.9 mm, 33.0 mm, 33.1 mm, 33.2 mm, 33.3 mm, 33.4 mm, 33.5 mm, 33.6 mm, 33.7 mm, 33.8 mm, 33.9 mm, 34.0 mm, 34 .1 millimeter, 34.2 millimeter, 34.3 millimeter, 34.4 It can be millimeters, or more than 34.5 millimeters. In some embodiments, the shaft sleeve CG vertical distance of golf coupling device 411000 is approximately 32.0 millimeters, 32.1 millimeters, 32.3 millimeters, 32.4 millimeters, 32.5 millimeters, 32.6 millimeters, 32.7 millimeters from the bottom of the sole of golf club head 41101. , 32.8 mm, 32.9 mm, 33.0 mm, 33.1 mm, 33.2 mm, 33.3 mm, 33.4 mm, 33.5 mm, 33.6 mm, 33.7 mm, 33.8 mm, 33.9 mm, 34.0 mm, 34 .1 millimeter, 34.2 millimeter, 34.3 millimeter, 34.4 It may be millimeters, or less than 34.5 millimeters. The shaft sleeve CG vertical distance of the golf coupling mechanism may be 33.6 millimeters from the bottom of the sole of the golf club head 41101.

Referring to Figure 36, Figure 36 illustrates a flow diagram of a method 47000 according to an embodiment. In many embodiments, method 47000 may include a method of manufacturing a golf club head of one or more components of a golf club head. The golf club head may be similar or identical to golf club head 41101 (FIG. 29).

Method 47000 may include providing a shaft sleeve (47001). The shaft sleeve may be similar or identical to shaft sleeve 411100 (FIG. 30). Figure 36 illustrates example step 47001 according to the embodiment of Figure 36.

For example, in Figure 36, step 47001 may include step 48001 of providing (e.g., manufacturing) a shaft sleeve body. The shaft sleeve may be similar or identical to shaft sleeve body 42103 (FIG. 37).

Step 47002 may also include step 48002 of providing (e.g., manufacturing) a shaft sleeve cap. The shaft sleeve cap may be similar or identical to shaft sleeve cap 42104 (FIG. 38).

Now referring to FIG. 36, method 47000 may include providing (e.g., manufacturing) a golf club head (47002). The golf club head may be similar or identical to golf club head 41101 (FIG. 29). In some embodiments, step 47001 may be performed before step 47002 and may be performed after step 27002. In other embodiments, steps 47001 and 47002 may be performed approximately simultaneously.

Method 47000 may also include inserting a shaft sleeve into a hosel bore of a golf club head (step 47003). The hosel bore may be similar or identical to the hosel bore described above with respect to golf club head 41101 (FIG. 29).

Method 4700 may also include inserting a golf club shaft into a shaft bore (step 47004). The golf club shaft may be similar or identical to golf club shaft 41102 (FIG. 29) and the shaft bore may be similar or identical to shaft bore 433120 (FIG. 31).

Meanwhile, method 47000 may include inserting a shaft sleeve cap into a shaft bore (step 47005). In some embodiments, step 47004 may be performed before step 47005 or after step 27002. In other embodiments, steps 47004 and 47005 may be performed approximately simultaneously. In further embodiments, step 47003 may be performed before step 47004 and/or step 47005, and may be performed after step 27004 and/or step 27005. In many embodiments, one or more of steps 47001-47003 may be performed before one or more of steps 47004-47005, or may be performed after one or more of steps 47004-47005.

Method 47000 may also include a step 47006 of securing the shaft sleeve to the hosel of the golf club head using a fastener. The hosel may be similar or identical to the hosel described above with respect to golf club head 41101 (FIG. 31), and the fastening portion may be similar or identical to the fastening portion described above with respect to golf club head 21101 (FIG. 31). You can.

Although the golf coupling mechanism and associated methods herein are described with reference to specific embodiments, various changes may be made without departing from the spirit or scope of the disclosure. As an example, in an embodiment, sleeve coupler set 3110 (FIGS. 3-7, 10, 14-17), sleeve coupler set 12110 (FIG. 12), and sleeve coupler set 223110 (FIG. 22), and/or the sleeve coupler set 411100 may include only two sleeve couplers, and the receptacle coupler set 3210 (FIGS. 3 and 4, 8 and 9, 11, 14- 17), the accommodating coupler set 13210 (FIG. 13), the accommodating coupler set of the shaft accommodating part 213200 (FIG. 21), and/or the accommodating coupler set of the shaft accommodating part 413200 (FIG. 29) It may contain only two receptacle couplers. In such embodiments, only two configurations may be possible between the shaft sleeve and shaft receiver, and the golf coupler set may allow adjustment between two lie angles or two loft angles. Of course, in embodiments, there may also be a sleeve coupler set having three, five, six, seven, eight or more sleeve couplers and a sleeve coupler set having three, five, six, seven, eight or more sleeve couplers. A receptacle coupler set with more receptacle couplers may be provided, and the number of possible lie angle and loft angle combinations is correspondingly increased.

The foregoing description provides examples of these and other changes. Likewise, other permutations of different embodiments incorporating one or more features of the various figures are contemplated. Accordingly, it should be understood that the detailed description, claims, and drawings of this specification are intended to illustrate the scope of the present disclosure and are not intended to limit the present invention. The scope of this application should be limited only to the extent required by the appended claims.

The golf coupling mechanism and related methods disclosed herein may be realized through various embodiments, and the foregoing description of certain such embodiments is not intended to represent a complete description of all possible embodiments. Rather, the detailed illustrations of the drawings and the drawings themselves show at least one preferred embodiment and may also represent variations.

Additionally, benefits, other advantages, and workarounds are described with respect to specific embodiments. However, any benefit, advantage, solution, or component(s) that may result in any benefit, advantage, or solution that may arise or be more pronounced shall not be excluded from the scope of the claims. Unless explicitly stated in part or in full, they are not to be construed as important, essential, or fundamental features or elements of the claims.

Because the Rules of Golf may change from time to time [e.g., new regulations may be adopted by golf standardization bodies and/or governing bodies such as the United States Golf Association (USGA), Royal and Ancient Golf Club of St. Andrews (R&A), etc., or old regulations may be revised. Rules may be excluded or modified], golf equipment relating to the devices, methods and articles of manufacture described herein may be adapted to or independent of the rules of golf at any given time. Accordingly, golf equipment relating to the devices, methods and articles of manufacture described herein may be advertised, offered for sale, and/or sold as golf equipment that may or may not conform to the foregoing. The devices, methods and articles of manufacture described herein are not limited in this respect.

Although the foregoing examples may be described in connection with driver-type golf clubs, the devices, methods, and articles of manufacture described herein may also be used for fairway wood-type golf clubs, hybrid-type golf clubs, iron-type golf clubs, wedge-type golf clubs, or putters. It may also be applied to other types of golf clubs, such as type golf clubs. Alternatively, the devices, methods and articles of manufacture described herein may be applied to other types of sports equipment, such as hockey sticks, tennis rackets, fishing poles, ski poles, etc.

In addition, if the embodiments and/or limitations (1) are not clearly claimed in the claims, and (2) are potential equivalents to express elements and/or limitations of the claims based on the doctrine of equivalence; The embodiments and limitations disclosed herein are not intended to be donated to the public under any dedication notice.

Claims (13)

In the golf club head,
As the club head body,
a sole portion including a bottom of the sole, an upper portion opposing the sole portion, a heel portion, a toe portion opposing the heel portion, a rear portion, a front portion opposing the rear portion and including a striking surface; and
hosel
A club head body comprising:
a shaft sleeve insertable into the hosel and configured to engage a golf club shaft with the hosel; and
A fixed fastener configured to be coupled to the lower end of the sleeve of the shaft sleeve to secure the shaft sleeve within the hosel.
Including,
the hosel includes a hosel bore configured to receive the shaft sleeve,
The shaft sleeve is,
a shaft bore configured to receive an end of the golf club shaft;
a shaft sleeve body including a sleeve outer wall;
a shaft sleeve cap configured to be coupled to the sleeve body;
Sleeve top;
bottom of sleeve; and
A sleeve axis extending longitudinally between said sleeve top and sleeve bottom.
Including,
The shaft sleeve body,
a first coupler protruding from the outer wall of the sleeve;
a second coupler protruding from the outer wall of the sleeve;
a third coupler protruding from the outer wall of the sleeve; and
A fourth coupler protruding from the outer wall of the sleeve
It further includes,
The first coupler includes a first arcuate surface curved throughout the first coupler,
The second coupler includes a second arcuate surface curved throughout the second coupler,
The third coupler includes a third arcuate surface curved throughout the third coupler,
The fourth coupler includes a fourth arcuate surface curved throughout the fourth coupler,
The shaft bore further includes a shaft bore axis,
A golf club head, wherein the shaft sleeve outer wall and the shaft bore are not coaxial. According to paragraph 1,
wherein the shaft bore axis and the sleeve axis define a loft angle and a lie angle therebetween. According to paragraph 2,
the first coupler position defines a first loft angle and a first lie angle between the shaft bore axis and the shaft receiver;
the second coupler position defines a second loft angle and a second lie angle between the shaft bore axis and the shaft receiver;
a third coupler position defines a third loft angle and a third lie angle between the shaft bore axis and the shaft receiver;
and wherein the fourth coupler position defines a fourth loft angle and a fourth lie angle between the shaft bore axis and the shaft receiver. According to paragraph 3,
and wherein the first coupler position is configured to reduce the first lie angle to 0.2 to 4 degrees. According to paragraph 3,
and wherein the second coupler position is configured to increase the second lie angle by 0.2 to 4 degrees. According to paragraph 3,
and wherein the third coupler position is configured to reduce the third loft angle to 0.2 to 4 degrees. According to paragraph 3,
and wherein the fourth coupler position is configured to increase the fourth loft angle from 0.2 degrees to 4 degrees. According to paragraph 4,
The golf club head of claim 1, wherein the first loft angle is maintained in a neutral orientation. According to clause 5,
and wherein the second loft angle is maintained in a neutral orientation. According to clause 6,
A golf club head, wherein the third lie angle is maintained in a neutral orientation. In clause 7,
A golf club head, wherein the fourth lie angle is maintained in a neutral orientation. According to paragraph 1,
The shaft sleeve is,
a fifth coupler protruding from the outer wall of the sleeve, the fifth coupler comprising a fifth arcuate surface curved throughout the fifth coupler; and
A sixth coupler protruding from the outer wall of the sleeve, the sixth coupler comprising a sixth arcuate surface curved throughout the sixth coupler.
A golf club head further comprising: In the golf club head,
A sole portion including the bottom of the sole, an upper portion opposing the sole portion, a heel portion, a toe portion opposing the heel portion, a rear portion, and a front portion opposing the rear portion, including a front portion including a striking surface. club head body;
hosel; and
golf coupling mechanism
Including,
The golf coupling mechanism,
A shaft sleeve configured to be coupled to the end of the golf club shaft and the hosel;
A shaft receiving portion of the golf club head configured to receive the shaft sleeve.
Including,
The shaft sleeve is,
a shaft bore configured to receive an end of the golf club shaft;
a shaft sleeve body including a sleeve outer wall;
a shaft sleeve cap configured to be coupled to the shaft sleeve;
Top;
lower;
a sleeve axis extending longitudinally between the top of the sleeve and the bottom of the sleeve; and
Includes coupler set,
The coupler set is,
a first coupler protruding from the outer wall of the sleeve;
a second coupler protruding from the outer wall of the sleeve;
a third coupler protruding from the outer wall of the sleeve; and
A fourth coupler protruding from the outer wall of the sleeve
Including,
The shaft bore includes a shaft bore axis,
The first coupler includes a first arcuate surface curved throughout the first coupler,
The second coupler includes a second arcuate surface curved throughout the second coupler,
The third coupler includes a third arcuate surface curved throughout the third coupler,
The fourth coupler includes a fourth arcuate surface curved throughout the fourth coupler,
The shaft receiving part,
A fifth coupler recessed into the inner wall of the receiving portion;
A sixth coupler recessed into the inner wall of the receiving portion;
A seventh coupler recessed into the inner wall of the receiving portion; and
An eighth coupler recessed into the inner wall of the receiving portion
Including,
The fifth coupler includes a fifth arcuate surface curved throughout the fifth coupler,
The sixth coupler includes a sixth arcuate surface curved throughout the sixth coupler,
The seventh coupler includes a seventh arcuate surface curved throughout the seventh coupler,
The eighth coupler includes an eighth arcuate surface curved throughout the eighth coupler,
A golf club head, wherein the shaft sleeve outer wall and the shaft bore are not coaxial.