JP6346351B2 - Golf club head having ribs and related methods - Google Patents

Description

  The present invention relates generally to golf equipment, and more particularly to golf club heads.

  Current wood-type golf club heads are made entirely of metal, not the persimmon wood, which is also the name of the club. Generally, these club heads are constructed of a hollow metal shell, have a relatively thick face to withstand the impact of the ball, and withstand the impact to the ground and the center of gravity of the club head. It has a relatively thick sole for lowering. The other parts of the golf club head are made as thin as possible to distribute the maximum amount of material to the face and source. Current club head crowns and skirts are extremely thin but must be stiff enough in the direction of maximum stress to support the club head face.

  The rib is generally adopted for the crown of the club head, and the crown can be made as light as possible while giving sufficient rigidity in the front-rear direction. Zobelean U.S. Pat. No. 4,214,754 discloses a hollow club head with a crown that includes parallel ribs extending perpendicular to the face of the club head. Parallel ribs extend inside and bridge the thin transition of the crown. Similarly, Sano US Pat. No. 6,595,871 discloses a hollow club head having an independently mounted face and a crown including a plurality of parallel ribs extending perpendicular to the face. To do. Schmidt et al., US Pat. No. 5,067,715, discloses a plurality of parallel ribs that melt into the club face and extend perpendicular to the club head face, as well as the club head rear wall and the club head rear wall. A hollow club head having a crown that includes a plurality of ribs extending perpendicular to the surface.

  The prior art has not recognized that a club head with a crown having parallel ribs that uniformly reinforce the face of the club head is not an effective configuration. This is because a uniform load is not applied to the face of the club head but essentially an impact point near the center.

  In a first example, a golf club head can include a body and a plurality of ribs protruding from the rib surface of the body. The body can have a heel end, a toe end, a sole, a front surface, and a rear surface. The plurality of ribs can include a first rib having a first longitudinal axis, a second rib having a second longitudinal axis, and a third rib having a third longitudinal axis. The first longitudinal axis, the second longitudinal axis, and the third longitudinal axis can intersect at a common point outside the body.

  In a second example, a golf club head can include a body and a plurality of ribs protruding from the rib surface of the body. The body can have a heel end, a toe end, a sole, a front surface, and a rear surface. The plurality of ribs can be substantially straight and do not intersect, and / or the plurality of ribs are a first rib closest to the heel end of the body and a second rib closest to the toe end of the body. You may have. The plurality of ribs may also be substantially radial and form a fan shape between the first rib and the second rib.

  In a third example, a method includes: (a) providing a golf club body having a heel end, a toe end, a sole, a front surface, and a rear surface; and (b) a plurality of ribs protruding from a rib surface of the body. A step of preparing can be provided. The plurality of ribs pass through a first rib having a first longitudinal axis extending through the common point, a second rib having a second longitudinal axis extending through the common point, and the common point. There may be a third rib having a third longitudinal axis extending. The common point is located outside the body.

  Other examples and embodiments are further disclosed herein. Such examples and embodiments may be found in the drawings, the claims, and / or the present disclosure.

It is a front view of a golf club head. It is sectional drawing which observed the club head of FIG. 1 from the downward direction. It is the fragmentary sectional view which observed the club head of Drawing 1 from the front. It is a top view of the golf club head of 2nd Example. FIG. 5 is a cross-sectional view of the club head of FIG. 4 observed from the front. It is a top view of the golf club head of 3rd Example. It is sectional drawing which observed the club head of FIG. 6 from the side. It is a top view of the golf club head of 4th Example. It is sectional drawing which observed the club head of FIG. 8 from the side surface. It is a top view of the golf club head of 5th Example. It is sectional drawing which observed the club head of FIG. 10 from the front. It is a top view of the golf club head of a 6th example. It is sectional drawing which observed the club head of FIG. 12 from the front. It is a partial front sectional view of the golf club head of other examples. FIG. 15 is a top sectional view corresponding to line XV-XV of the golf club head of FIG. 14. 2 is a flowchart of a method for preparing a golf club head based on an example of the present disclosure. It is a top sectional view of a golf club head.

  Referring to FIGS. 1 to 3, the golf club includes a club head 12, a hosel 14, and a shaft 16. Club head 12 is generally comprised of a hollow body 18 made of stainless steel, titanium, or other material having a high shear rate and a high strength to weight ratio. The hollow body 18 includes a front wall or face 20 for impacting the golf ball. The hollow body 18 further includes a top wall or crown 22, a bottom wall or sole 24, and a lateral wall or skirt 26 that connects the face 20 to the crown 22 and sole 24. Club head 12 further includes a heel end 30 and a toe end 32. The skirt 26 surrounds the club head 12 between the heel end 30 and the toe end 32 and forms a rear wall 28. The golf club head 12 can be a driver-type club, a fairway wood, or a hybrid club golf club head.

  The crown 22 comprises a thin wall structure, preferably a casting, as part of the hollow body 18. The crown 22 is preferably titanium having a relatively thin thickness dimension of 0.076 centimeters (cm) ± 0.013 cm. The crown 22 is reinforced by a plurality of ribs extending downward from the lower surface 36 of the crown 22. Each rib 34 extends from the vicinity of the first end away from the front wall 20 to the vicinity of the second end away from the rear wall 28. The ribs 34 are more distant at the second end than at the first end, preferably more than 20% apart. Adjacent ribs 34 spread from the first end to the second end by an angle of at least 5 degrees. The ribs 34 are narrow, long, generally straight, metal, shock wave distribution elements, have a thickness dimension of 0.051 cm ± 0.013 cm, and a width dimension of 0.178 ± 0.013 cm. The rib 34 is convex downward substantially when observed in a cross section, and smoothly integrates with the lower surface 36 of the crown 22. It can be seen that the crown 22 has no ribs extending laterally between the ribs 34.

  The lower surface 36 of the crown 22 includes a front portion and a rear portion. The front and rear portions are defined by an intermediate line that is generally parallel to the front wall 20 at approximately half the distance between the foremost point of the front wall 20 and the rearmost point of the rear wall 28. Defined. The first end of the rib 34 terminates at the front portion of the crown 22, and the second end of the rib 34 terminates at the rear portion of the crown 22.

  As clearly shown in FIG. 2, the ribs 34 are arranged in a pattern such that the longitudinal axis 38 of the ribs 34 extends radially from the point 40 located in front of the front wall 20 and intersects at the point 40. The point 40 is preferably located within the center of one third (W / 3) of the width of the front wall 20 and is preferably located substantially in front of the center line of the front wall 20. Since the club head 12 used here is a three-dimensional body, the point 40 is a single point when viewed in plan in FIG. Alternatively, point 40 can be considered as a vertical line composed of the intersection of vertical planes passing through the centerline of rib 34.

  The rib 34 originates from a first position proximate to the intersection 42 of the rear surface 44 of the front wall 20 and the lower surface 36 of the crown 22 and extends to a second position proximate to the rear wall 28. In an embodiment, at least half, preferably all of the ribs 34 extend from the front wall 20 to a half point (L / 2) of the club head 12 and are not intersected by any transverse ribs. In addition, each rib 34 is connected to the other rib 34 only by the thin portion of the crown 22 and is independent of the other rib 34. Preferably, point 40 is also no more forward than L / 2 from front wall 20. As a result, the ten ribs 34 have a pattern that spreads at an angle of about 60 degrees, or the adjacent ribs 34 have a pattern that diverges at 4 to 8 degrees, preferably about 6 degrees.

  The surprising result of this arrangement of ribs 34 is that an array of vertical ribs of 0.051 cm thickness and 0.178 cm width reduces the maximum stress by 9% compared to an unreinforced crown area. In contrast, ribs 34 arranged in a radial fan pattern reduce the maximum stress in the crown region by approximately 36%. Although not bound by any particular theory of operation, the face 20 deforms unevenly from the strike point to the outside, and similarly, the load is transmitted to the crown in a radially uneven shape from the strike point to the outside. It seems to be done. Therefore, when the ribs 34 are arranged so as to extend radially from the vicinity of the hitting point, the crown 22 supports the face 20 more effectively during the impact.

  In addition to linear ribs of substantially constant width and thickness, other alternative embodiments of golf club heads with ribs are possible, as shown in FIGS. 1-3. For example, the rib may be bent and the thickness and / or width of the rib may change.

  As an example, FIG. 4 shows another embodiment of a golf club head. FIG. 5 shows a cross-sectional view corresponding to the line labeled “5” in the embodiment of FIG. The golf club head 412 (FIG. 4) includes a hollow body 418 having a front wall 420 (FIG. 4), a crown 422 (FIG. 4), a sole 524 (FIG. 5), and a lateral wall 526 (FIG. 4) connecting the crown 422 and the sole 524. 5), including a heel end 430 (FIG. 4), a toe end 432 (FIG. 4), and a rear side 428 opposite the front wall 420 (FIG. 4). In addition, the golf club head 412 can include ribs 440 (FIG. 4) that extend downward from the lower surface of the crown 422. In the example embodiment shown in FIG. 4, the rib 440 includes ribs 441, 442, 443, 444, 445, 446 having a first end near the front wall 420 and a second end near the rear side 428. .

  In some cases, one or more ribs 440 bend. In one example, each of the ribs 441, 442, 443, 444, 455, 446 is bent as in the example of FIG. However, in other examples, some of the ribs 440 may not be bent. For example, the rib 441 can be a straight line. If the rib 440 is bent, the length of the rib 440 increases. The longer the rib length, the more ribs can absorb the vibration.

  Each of the ribs 440 in FIG. 4 is bent. In some cases, the ribs 440 bend in different directions. For example, the ribs 441, 442, 443 may be bent in one direction, and the ribs 444, 445, 446 may be bent in the opposite direction. The ribs 441, 442, and 443 can be bent in a convex shape with respect to the toe end 432. Accordingly, the first and second ends of the ribs 441, 442, 443 are bent away from the toe end 432 toward the heel end 430. On the other hand, the ribs 444, 445, and 446 bend in a convex shape with respect to the heel end 430. Accordingly, the first and second ends of the ribs 444, 445, 446 are bent away from the heel end 430 toward the toe end 432. In one example, if at least two of the ribs 440 extend forward in a straight or curved shape toward the front wall 420, they will intersect. For example, the linear extension of rib 442 will intersect the linear extension of rib 444 near the front wall 420, and in other embodiments will intersect in front of the front wall 420. Note that other curved arrangements of ribs 440 may exist. For example, more ribs may be bent in one direction than the other direction, or all ribs may be bent in the same direction. Further, there may be fewer or more than six ribs 440.

  Each of the ribs 440 may have a radius of curvature. The curvature radius is a radius of a circle formed by the extrapolation rib. In one example, each of the ribs 440 has a different radius of curvature. In other examples, some radii may be substantially the same.

  In the example of the golf club head 412 shown in FIG. 4, the rib 441 has the largest radius of curvature. As the rib approaches the heel end 430 or the toe end 432 with respect to the rib 441, the radius of curvature of the rib decreases. For example, the radius of curvature of the rib 442 is smaller than that of the rib 441, and the radius of curvature of the rib 443 is smaller than that of the rib 442. Further, the radius of curvature of the rib 444 is smaller than that of the rib 441, the radius of curvature of the rib 445 is smaller than that of the rib 444, and the radius of curvature of the rib 446 is smaller than that of the rib 445. In other examples, the radius of curvature of the rib 440 can increase as the rib approaches the heel end 430 or toe end 432 relative to the rib 441. In yet another example, the radius of curvature of the rib 440 can be independent of the position relative to the rib 441.

  In the same or other examples, the radius of curvature of the ribs can be symmetric depending on the position relative to the ribs 441. For example, the radius of curvature of the rib 442 can be substantially the same as the radius of curvature of the rib 444, and the radius of curvature of the rib 443 can be the same as the radius of curvature of the rib 445. In another example, the radii of curvature of the ribs 440 are asymmetric with each other.

  Each of the ribs 440 has a width dimension. In the example of FIG. 4, each of the ribs 440 can have substantially the same width as the other ribs. In other examples, the ribs 440 can have a width that is not the same as all other ribs. In one example, each of the ribs 440 has a tapered first end and a tapered second end. In other examples, the first end and / or the second end are not tapered.

  Further, each of the ribs 440 has a thickness dimension. The thickness dimension is measured as the distance that the rib extends from the crown 422 into the hollow body 418. In the example of FIG. 5, each of the ribs 440 has a thickness that is substantially the same as the thickness of each of the other ribs. In other examples, ribs 440 can have a thickness that is not the same as other ribs.

  Each of the ribs 440 also has a length dimension. The length dimension is measured as the (curved) distance between the first and second ends of the rib. In the example of FIG. 4, the rib near the midpoint between the toe end 432 and the heel end 430 has the maximum length. Further, the rib length decreases as the rib approaches the toe end 432 or the heel end 430. In one example, the rib 441 has a maximum length, the length of the rib 442 is longer than the rib 443, the length of the rib 444 is longer than the rib 445, and the length of the rib 445 is longer than the rib 446. long. In other examples, all ribs 440 have approximately the same length.

  FIG. 6 shows another embodiment of a golf club head. FIG. 7 shows a cross-sectional view corresponding to the line labeled “7” in the embodiment of FIG. Golf club head 612 (FIG. 6) connects hollow body 618 (FIG. 6) with front wall 620 (FIG. 6), crown 622 (FIG. 6), sole 724 (FIG. 7), crown 622 and sole 624. A lateral wall 726 (FIG. 7), a heel end 630 (FIG. 6), a toe end 632 (FIG. 6), and a rear side 628 (FIG. 6) are provided. Further, the golf club head 612 can also include ribs 640 (FIG. 6) that extend downward from the lower surface of the crown 622. In the example embodiment shown in FIG. 6, the rib 640 includes ribs 641, 642, 643, 644, 645, 646 having a first end near the toe end 632 and a second end near the heel end 630. .

  In some cases, one or more ribs 640 bend. In one example, each of the ribs 641, 642, 643, 644, 645, 646 is bent as in the example of FIG. However, in other examples, some of the ribs 640 may not be bent. For example, the rib 641 can be a straight line.

  Each of the ribs 640 in FIG. 6 is bent. In one example, all of the ribs 640 are bent in the same direction. For example, the ribs 641, 642, 643, 644, 645, 646 are bent in a convex shape with respect to the front wall 620. Accordingly, the first and second ends of the rib 640 are bent away from the front wall 620. Note that there are other curved arrangements of ribs 640. For example, some of the ribs 640 may be convexly curved relative to the front wall 602 as the size of the golf club head sharply decreases on the rear side 628 relative to the front wall 620. In other embodiments, some of the ribs 640 may have a first end near the front wall 620 and a second end near the back side 628. In addition, there may be fewer or more than six ribs 440.

  Each of the ribs 640 can have a radius of curvature. In some examples, each of the ribs 640 has a different radius of curvature. In other examples, some of the radii of curvature can be substantially the same.

  In the example golf club head 612 shown in FIG. 6, the rib 641 has the largest radius of curvature. As the rib approaches the rear end 628, the radius of curvature of the rib decreases. For example, the radius of curvature of the rib 642 is smaller than the rib 641, the radius of curvature of the rib 643 is smaller than the rib 642, the radius of curvature of the rib 644 is smaller than the rib 643, and the radius of curvature of the rib 645 is smaller than the rib 644. The radius of curvature of the rib 646 is smaller than that of the rib 645. In another example, the radius of curvature of the rib 640 closer to the rear end 628 can be increased. In yet another example, the radius of curvature of the rib 640 is independent of the position of the rib relative to the rear end 628.

  Each of the ribs 640 has a width dimension. In the example of FIG. 6, each rib 640 has substantially the same width as the other ribs. In other examples, the ribs 640 can have a width that is not the same as the other ribs. In some examples, each of the ribs 640 has a tapered first end and a tapered second end. In other examples, the first end and / or the second end are not tapered.

  Further, each of the ribs 640 has a thickness dimension. The thickness dimension is measured as the distance that the rib extends from the crown 622 into the hollow body 618. In the example of FIG. 7, each of the ribs 640 has substantially the same thickness as each of the other ribs. In other examples, the ribs 640 can have a thickness that is not the same as the other ribs.

  Each of the ribs 640 also has a length dimension. The length dimension is measured as the (curved) distance between the first and second ends of the rib. In the example of FIG. 6, the rib closer to the front wall 620 generally has a greater length than the rib closer to the rear side 628. In one example, the length of the rib 642 is longer than the rib 643, the length of the rib 643 is longer than the rib 644, the length of the rib 644 is longer than the rib 645, and the length of the rib 645 is longer than the rib 646. . However, the length of the rib 642 is longer than the rib 641. In other examples, all of the ribs 640 have substantially the same length.

  FIG. 8 shows another embodiment of a golf club head. FIG. 9 shows a cross-sectional view corresponding to the line labeled “9” in the embodiment of FIG. Golf club head 812 (FIG. 8) joins hollow body 818 (FIG. 8), crown 822 (FIG. 8), sole 924 (FIG. 9), crown 422 and sole 524 with front wall 820 (FIG. 8). It includes a lateral wall 926, a heel end 830 (FIG. 8), a toe end 832 (FIG. 8), and a rear side 828 (FIG. 8) opposite the front wall 820. Further, the golf club head 812 can also include a rib 840 (FIG. 8) that extends downwardly from the lower surface of the crown 822. In the example embodiment shown in FIG. 8, the rib 840 may have a first end near the toe end 832 and a second end near the heel end 830.

  In some cases, one or more ribs 840 bend. In one example, the ribs 841, 842, 843, 844, and 845 are bent as in the example of FIG. However, in other examples, some of the ribs 840 may not bend. For example, the rib 841 can be a straight line.

  Each of the ribs 840 in FIG. 8 is bent. In some cases, all of the ribs 840 bend in the same direction. For example, the ribs 841, 842, 843, 844 and 845 bend in a concave shape with respect to the front wall 820. Accordingly, the first end and the second end of the rib 840 are bent toward the front wall 820. Note that other curved arrangements of ribs 840 are possible. For example, some of the ribs 840 may have a first end near the front wall 820 and a second end near the back side 828. Further, there may be fewer or more than six ribs 840.

  Each of the ribs 840 has a radius of curvature. In some cases, each of the ribs 840 has a different radius of curvature. In other examples, some radii of curvature are substantially the same.

  In the example golf club head 812 shown in FIG. 8, the rib 841 has a minimum radius of curvature. The radius of curvature of the rib increases as the rib approaches the rear end 828. For example, the radius of curvature of the rib 842 is greater than that of the rib 841, the radius of curvature of the rib 843 is greater than that of the rib 842, the radius of curvature of the rib 844 is greater than that of the rib 843, and the radius of curvature of the rib 845 is greater than that of the rib 844. . In other examples, the radius of curvature of the rib 840 is independent of the position of the rib relative to the trailing end 828.

  In some or other examples, the radius of curvature of the ribs can be such that the ribs are concentric. If each rib 840 is extrapolated to be a complete circle, the resulting circles are concentric. In other examples, the radius of curvature of the ribs 840 is not concentric.

  Each of the ribs 840 has a width dimension. In the example of FIG. 8, each of the ribs 840 has substantially the same width as the other ribs. In other examples, the ribs 840 can have a width that is not the same as the other ribs. In some examples, each of the ribs 840 has a tapered first end and a tapered second end. In other examples, the first end and / or the second end are not tapered.

  Further, each of the ribs 840 has a thickness dimension. The thickness dimension is measured as the distance that the rib extends (curves) into the hollow body 818 from the crown. In the example of FIG. 9, each of the ribs 840 has substantially the same thickness as the thickness of the other ribs. In other examples, the rib 840 has a thickness that is not the same as the other ribs.

  Each of the ribs 840 also has a length dimension. The length dimension is measured as the distance between the first end and the second end of the rib. In the example of FIG. 8, the rib closer to the rear side 828 is longer than the rib closer to the front wall 820. In one example, the rib 845 has a maximum length. The rib 844 is longer than the rib 843, the rib 843 is longer than the rib 842, and the rib 842 is longer than the rib 841. In other examples, all of the ribs 840 have substantially the same length.

  In addition to curved ribs, golf club heads may include ribs having varying widths. For example, FIG. 10 shows another example of a golf club head. FIG. 11 shows a cross-sectional view corresponding to the line labeled “11” in the embodiment of FIG. A golf club head 1012 (FIG. 10) connects a hollow body 1018 (FIG. 10) having a front wall 1020 (FIG. 10), a crown 1022 (FIG. 10), a sole 1124 (FIG. 11), and a crown 1022 and a sole 1124. It includes a lateral wall 1126 (FIG. 11), a heel end 1030 (FIG. 10), a toe end 1032 (FIG. 10), and a rear side 1028 (FIG. 10) opposite the front wall 1020. In addition, the golf club head 1012 can also include ribs 1040 (FIG. 10) that extend downward from the lower surface of the crown 1022. In the example embodiment shown in FIG. 10, the rib 1040 comprises ribs 1041, 1042, 1043, 1044, 1045 having a first end near the front wall 1020 and a second end near the rear end 1028.

  In some cases, one or more ribs 1040 are linear. As an example, as in the example of FIG. 10, each of the ribs 1041, 1042, 1043, 1044, and 1045 is a straight line. However, in other examples, some of the ribs 1040 may not be straight. For example, one or more ribs 1040 can be bent. In some examples, ribs 1040 are arranged so that each of the axes of ribs 1040 converge at a common point. In other examples, each of the axes of the ribs 1040 does not converge at a common point.

  Each of the ribs has a width dimension. In the example of FIG. 10, each of the ribs 1040 has a tapered width. For example, the width of each of the ribs 1040 decreases from the midpoint toward the first end and the second end. As shown in FIG. 10, the width of each intermediate point of the rib 1040 can be substantially equal to the width of each intermediate point of the other ribs. In other examples, the ribs 1040 can have a width at the midpoint that is different from the width at each midpoint of the other ribs.

  The width of the rib 1040 can be tapered at any rate. For example, as shown in FIG. 10, the width is smooth and has a non-constant taper, which results in an elliptical shape with the ribs 1040 extending long. In other examples, the width can be linear or taper so that the ribs 1040 have a diamond-like configuration.

  Further, each of the ribs 1040 has a thickness dimension. The thickness dimension is measured as the distance that the rib extends from the crown 1022 into the hollow body 1018. In the example of FIG. 11, each of the ribs 1040 has a tapered thickness. For example, the thickness of each of the ribs 1040 decreases from the midpoint toward the first end and the second end. As shown in FIG. 11, each of the ribs 1040 can have a thickness that is approximately equal to the thickness at the respective midpoint of the other rib. In other examples, the ribs 1040 can have a thickness that is different from the thickness at the respective midpoints of the other ribs.

  The thickness of the rib 1040 can be tapered at any rate. For example, as shown in FIG. 11, the thickness is smooth and has a non-constant taper, so that the rib 1040 has a smooth contour. In other examples, the thickness may taper more rapidly, linearly or constantly, thereby causing the rib 1040 to have a more sharp height at the midpoint of the rib 1040.

  Each of the ribs 1040 also has a length dimension. The length dimension is measured as the distance between the first end and the second end of the rib. In the example of FIG. 10, the rib closer to the midpoint between the toe end 1032 and the heel end 1030 is longer than the rib closer to the toe end 1032 or the heel end 1030. In one example, the rib 1041 has a maximum length. The length of the rib 1042 is longer than that of the rib 1043, and the length of the rib 1044 is longer than that of the rib 1045. In other examples, all of the ribs 1040 have substantially the same length.

  FIG. 12 shows another embodiment of a golf club head. FIG. 13 shows a cross-sectional view corresponding to the line labeled “13” in the embodiment of FIG. A golf club head 1212 (FIG. 12) connects a hollow body 1218 (FIG. 12) having a front wall 1220 (FIG. 12), a crown 1222 (FIG. 12), a sole 1324 (FIG. 13), and a crown 1222 and a sole 1324. A lateral wall 1326 (FIG. 13), a heel end 1230 (FIG. 12), a toe end 1232 (FIG. 12), and a rear side 1228 (FIG. 12) opposite the front wall 1220 are provided. In addition, the golf club head 1212 can also include ribs 1240 (FIG. 12) that extend downwardly from the lower surface of the crown 1222. In the example embodiment shown in FIG. 12, the rib 1240 includes ribs 1241, 1242, 1243, 1244, 1245 having a first end near the front wall 1240 and a second end near the rear end 1228.

  In some cases, one or more ribs are straight. In one example, as in the example of FIG. 12, the ribs 1241, 1242, 1243, 1244, 1245 are straight lines. However, in other examples, some of the ribs 1240 may not be straight. For example, one or more ribs 1240 can bend. In some cases, ribs 1240 are arranged so that each of the axes of ribs 1240 converge at a common point. In some cases, the common point is in front of the front wall. In other examples, each of the rib 1240 axes does not converge at a common point.

  Each of the ribs 1240 has a width dimension. In the example of FIG. 12, each of the ribs 1240 has a substantially constant width. There is also an example in which the width of the rib 1240 tapers at the first end and the second end. In other examples, the width of each of the ribs 1240 can be varied. For example, as the rib approaches the midpoint between the toe end 1232 and the heel end 1230, the width of the particular rib increases. As shown in FIG. 12, the rib 1241 has the maximum width, the width of the rib 1242 is larger than the width of the rib 1243, and the width of the rib 1244 is larger than the width of the rib 1245. In the golf club head 1212, there is an example in which the width of the rib 1240 is symmetric. For example, the width of the rib 1243 is substantially equal to the width of the rib 1245, and the width of the rib 1242 is substantially equal to the width of the rib 1244. In another example, in the golf club head 1212, the width of the rib 1240 is asymmetric. In other examples, the width of the rib 1240 can change, for example, to increase as the rib approaches the toe end 1232 or the heel end 1230. In yet another example, the width of rib 1240 is independent of the position of the rib relative to toe end 1232 and / or heel end 1230. The ribs 1240 can be arranged such that ribs having a larger width can be located in a larger vibration region.

  Further, each of the ribs 1240 has a thickness dimension. The thickness dimension is measured as the distance that the rib extends from the crown 1222 into the hollow body. In the example of FIG. 13, each of the ribs 1240 has a substantially constant thickness. Also, as shown in FIG. 13, each of the ribs 1240 can have a thickness that is different from the thickness of at least one of the other ribs. In some cases, the thickness of the rib 1240 increases as the rib approaches the midpoint between the toe end 1232 and the heel end 1230. As shown in FIG. 12, the rib 1241 can have the maximum thickness, the thickness of the rib 1242 is greater than the thickness of the rib 1243, and the thickness of the rib 1244 is greater than the thickness of the rib 1245. In the golf club head 1212, there is an example in which the thickness of the rib 1240 is symmetrical. For example, the thickness of the rib 1243 is substantially equal to the thickness of the rib 1245, and the thickness of the rib 1242 is substantially equal to the thickness of the rib 1244. In another example, in the golf club head 1212, the thickness of the rib 1240 is asymmetric. In other examples, the thickness of the rib 1240 can change, for example, to increase as the rib approaches the toe end 1232 or the heel end 1230. In yet another example, the thickness of the rib 1240 is independent of the position of the rib relative to the toe end 1232 and / or the heel end 1230. Ribs 1240 can be arranged such that ribs having a greater thickness can be located in a larger vibration region.

  Each of the ribs 1240 also has a length dimension. The length dimension is measured as the distance between the first end and the second end of the rib. In the example of FIG. 12, the rib closer to the midpoint between the toe end 1232 and the heel end 1230 is longer than the rib closer to the toe end 1232 or the heel end 1230. In one example, the rib 1241 has a maximum length. The rib 1242 is longer than the rib 1243 and the rib 1244 is longer than the rib 1245. In other examples, all of the ribs 1240 have substantially the same length.

  In other examples, the ribs can have a width and / or height that tapers and varies from rib to rib. For example, the ribs can have a tapered width as indicated by ribs 1040 in FIG. 10 and can have varying widths as indicated by ribs 1240 in FIG. Further, the ribs can have a tapered thickness as indicated by ribs 1040 in FIG. 11 and can have varying thicknesses as indicated by ribs 1240 in FIG.

  In another embodiment, a method for providing a golf club head is provided. A method of providing a golf club head includes a heel end, a toe end, a crown having an upper surface and a lower surface, a sole, a front wall, a rear side, and extending from a first end to a second end and downward from the lower surface of the crown. Providing a body having extending ribs can be included. Further, the rib may include a first rib and at least one second rib that is curved. In one example, the heel end can be a heel end 430 (FIG. 4), a heel end 630 (FIG. 6), or a heel end 830 (FIG. 8). The toe end can be a toe end 432 (FIG. 4), a toe end 632 (FIG. 6), or a toe end 832 (FIG. 8). The crown can be a crown 422 (FIG. 4), a crown 622 (FIG. 6), or a crown 822 (FIG. 8). The sole may be a sole 524 (FIG. 5), a sole 724 (FIG. 7), or a sole 924 (FIG. 9). The front wall can be a front wall 420 (FIG. 4), a front wall 620 (FIG. 6), or a front wall 820 (FIG. 8). The rear side can be a rear side 428 (FIG. 4), a rear side 628 (FIG. 6), and a rear side 828 (FIG. 8). The rib can be a rib 440 (FIG. 4), a rib 640 (FIG. 6), or a rib 840 (FIG. 8).

  In one example, the rib may be provided integrally with the body. In other examples, the ribs may be provided initially separately from the body. The ribs can then be bonded to the body by brazing techniques, soldering techniques, or adhesives.

  In another embodiment, a method for providing a golf club head is provided. A method of providing a golf club head includes a heel end, a toe end, a crown having an upper surface and a lower surface, a sole, a front wall, a rear side, and a first surface near the front wall extending downward from the lower surface of the crown. Providing a body having a substantially straight rib extending to a second end near the rear side may be included. Further, in some cases, the rib may have a width that tapers from its midpoint to the end. In the same or other examples, the widths of at least two ribs are different. In one example, the heel end can be a heel end 1030 (FIG. 10) and a heel end 1230 (FIG. 12). The toe end can be a toe end 1032 (FIG. 10) and a toe end 1232 (FIG. 12). The crown can be crown 1022 (FIG. 10), crown 1222 (FIG. 12). The sole may be a sole 1124 (FIG. 11) and a sole 1324 (FIG. 13). The front wall can be a front wall 1020 (FIG. 10) and a front wall 1220 (FIG. 12). The rear side can be a rear side 1028 (FIG. 10) and a rear side 1228 (FIG. 12). The rib may be a rib 1040 (FIG. 10) or a rib 1240 (FIG. 12).

  In one example, the rib may be provided integrally with the body. In other examples, the ribs may be provided initially separately from the body. The ribs can then be bonded to the body by brazing techniques, soldering techniques, or adhesives.

  With continued reference to the drawings, FIG. 14 shows a partial cross-sectional view of the front of the club head 140. FIG. 15 is a top sectional view of the golf club head 140 corresponding to the XV-XV line in FIG. Golf club head 140 is similar to other golf club heads disclosed herein (such as golf club head 12 (FIGS. 1-4)), but includes ribs 1420 located on rib surface 1415. It is different. Here, the rib surface 1415 is defined by the extension of the ribs 1420 and the space between them. In this example, the rib 1420 has a single material with the rib surface 1415, but the rib 1420 is not integral with the rib surface 1415 and is secured via one or more mechanical or chemical fasteners. It may be. In the present embodiment, the rib surface 1415 is located on the sole 1413 of the golf club head 140.

  The player or the user of the golf club head often evaluates the hitting quality based on the sound when the golf goal is impacted by the golf club head. Maintaining a consistent impact sound can be advantageous for a player or user to maintain a comfort zone and / or maintain expectations regarding such sound / quality relationships. In view of this, when the golf club head 140 impacts a golf ball such as the golf ball 1570 (FIG. 15), the rib 1420 is configured to achieve a desired impact sound through stress and / or vibration. It may be. Such characteristics may be determined by the design of the golf club head, even if the desired sound characteristics change as a result of other changes or improvements to the golf club head configuration based on better performance studies. It would be valuable to maintain and / or restore the desired sound characteristics at. In addition, as already described with respect to other golf club heads disclosed herein, the ribs 1420 reinforce some characteristics of the golf club head on which the rib surface 1415 is located to increase stress or impact force. Dissipate or pass.

  Club head soles often have sole characteristics such as indentations, protrusions, and / or weights not typically present in such club head crowns. In addition, the ribs 1420 (FIG. 14) may be configured to distribute or dissipate stress or impact forces toward or away from such sole features to achieve or maintain a desired impact sound. For example, the ribs 1420 may distribute or dissipate impact forces so as to avoid stress concentrations at or around such sole features. In the same or other examples, ribs 1420 may guide or send impact forces toward sole features such as sole weight 1590 (FIG. 15) or one or more weights. As a result, stress is appropriately mitigated or dissipated in the sole features, rather than mitigating or dissipating in other weak locations other than the sole. Such rib placement in the club head sole improves or thins a portion of the sole, allowing weight to be removed or relocated throughout the club head. In one example, the sole 1413 may be configured to be thinner toward the front of the club head 140 and may be configured to be thicker at least in some portions toward the back of the club head 140. Thus, the ribs 1420 can be positioned to properly resist impact stress when the golf club head 140 impacts the golf ball while repositioning weight away from the sole to obtain performance benefits. Can be reinforced. In the same or other examples, the rib 1420 may be configured to reinforce the sole 1413 against its ground impact force even if the sole 1413 strikes the ground when the golf club head 140 is swung. Good.

  Ribs 1420 may be provided on the sole 1413 rather than the crown 1414 to adjust impact sound and / or provide impact structural reinforcement for the club head 140, while at the same time increasing the center of gravity of the golf club head 140. It has been lowered. Other arrangements of ribs 1420 than those shown in FIGS. 14-16 are also possible in other embodiments. For example, the club head may include ribs in an arrangement similar to the one or more arrangements of FIGS. 1-13. However, such ribs are disposed on the sole, not the crown of the golf club head. Other arrangements of such ribs on the golf club head sole may be located on the club head sole rather than on the crown, which may provide further advantages as described above with respect to the ribs 1420 located on the sole 1413. .

  The golf club head 140 has a heel end 1411, a toe end 1412, a sole 1413, a crown 1414, a front surface 1416 (including a striking surface 1430 and a target striking range 1431), a rear surface 1517 (FIG. 15), and a skirt portion 1418. 1410. The body 1410 also includes a rib surface 1415 from which the ribs 1420 protrude. In this embodiment, the rib 1420 includes a rib 1421 having a rib longitudinal axis 1521 (FIG. 15), a rib 1422 having a rib longitudinal axis 1522 (FIG. 15), and a rib 1423 having a rib longitudinal axis 1523 (FIG. 15). The rib longitudinal axes 1521-1523 intersect at a common point 1550 outside the body 1410 (FIG. 15). The rib 1421 is positioned closest to the heel end 1411, the rib 1422 is positioned closest to the toe end 1412 of the body 1410, and the rib 1423 is positioned between the ribs 1411 and 1412. In this example, the ribs 1420 are arranged on the rib surface 1415 in a substantially radial pattern, forming a fan-like shape between the ribs 1421 and 1422. In this example, the common point 1550 is located in front of the front surface 1416. However, there may be an example in which the common point 1550 is located somewhere outside the body 1410. In one example, there are ribs similar to the ribs 1420, but there may be different examples configured to intersect at a common point located behind the rear surface 1517.

  The rib 1420 includes a rib 1424 having a longitudinal axis 1524 and a rib 1425 having a longitudinal axis 1525. In this example, the longitudinal axes 1524 and 1525 also intersect at the common point 1550 with the longitudinal axes 1521-1523. However, in some cases, not all of the longitudinal axes of the ribs 1420 need to intersect at a common point 1550. In one example, there are examples where the longitudinal axes 1524 and 1525 may intersect outside the body 1410 somewhere other than the common point 1550. In other examples, a different number of ribs may be provided. In one example, there may be no ribs 1423-25, such that the ribs 1420 comprise only two ribs. In another example, the ribs of the sole 24 (FIG. 3), but with more than 5 ribs, such as an embodiment with 10 ribs similar to those described in FIGS. 1-3. There may be. Such embodiments may include ribs that do not intersect all of the other ribs.

  In the present embodiment of FIG. 15, the rib surface 1415 is located on the inner sole 1413 in the body 1410, so the rib 1420 is also located on the inner side in the body and is visible on the sole 1413 opposite the rib surface 1415. Can not. However, in other examples, the rib 1420 may be outside the body 1410. That is, the rib surface may be located on the outer surface of the crown 1414 or the outer surface of the sole 1413. In this embodiment, the rib 1420 is concave with respect to the crown 1414, and the rib surface 1415 extends beyond the sole 1413 to part of the skirt portion 1418 of the body 1410. However, in some cases, the rib 1420 need not extend to the skirt portion 1418. In some examples, ribs 1420 extending to skirt portion 1418 may be useful in reinforcing one or more portions of skirt portion 1418 and / or adjusting the impact sound of golf club head 140.

  As can be seen in FIG. 15, each of the ribs 1420 is spaced from the front surface 1416 and the back surface 1517. Such a feature may be useful, for example, in that it does not interfere with the bending or deformation of the transition region between the front surface 1416 and the rest of the body 1410 when impacting a golf ball. Also, in this embodiment, each of the ribs 1420 is separated from the front surface 1416 by a different distance along their longitudinal rib axis. In one example, the distance that rib 1423 is separated from front surface 1416 along rib longitudinal axis 1523 is that rib 1421 and / or rib 1422 is separated from front surface 1416 along rib longitudinal axis 1521 and / or 1522, respectively. Longer than the distance you are. In this example, rib 1421 is about 1.732 cm away from front surface 1416, rib 1422 is about 1.638 cm away from front surface 1416, rib 1423 is about 1.742 cm away from front surface 1416, Ribs 1424 are about 1.737 cm away from front surface 1416 and ribs 1425 are about 1.709 cm away from front surface 1416. Such different spaces affect or adjust the stiffness of the transition region between the striking surface 1430 and the sole 1413 so that one or more characteristics of the golf club head (characteristic time, coefficient of restitution, impact sound, And / or touch etc.) can be meaningful. In other embodiments, the ribs 1420 may be separated from the front surface 1416 by the same distance.

  In this embodiment, ribs 1421 have a length of about 4.1 cm, ribs 1422 have a length of about 7.3 cm, and ribs 1423 have a length of about 8.6 cm. The rib 1424 has a length of about 6.5 cm and the rib 1425 has a length of about 8.8 cm. The length of the rib 1420 can pass through and / or extend over a recess or other feature in the rib surface 1415, such as a recess 1580 that includes the recess 1581-1583. Accordingly, as seen in the example of FIG. 15, the depression 1580 may partially cover one or more portions of one or more ribs 1420. In one example, a portion of the top of the ribs 1422 and 1425 can be seen protruding above the recess 1581 and a portion of the top of the ribs 1421, 1424, 1423 can be seen protruding above the recess 1582. More specifically, the thickness of the recess 1581 is smaller than the thickness of the ribs 1422 and 1425, and thus a part of the upper portion of the ribs 1422 and 1425 protrudes from the recess 1581. In addition, the thickness of the recess 1582 is smaller than the thickness of the ribs 1421, 1424, 1423, and therefore, a part of the upper portion of the ribs 1421, 1424, 1423 protrudes from the recess 1582. In another example, a portion of the ribs 1422-1425 can be seen protruding above the depression 1583. All of the recesses 1581-1583 protrude from the rib surface 1415 into the interior of the golf club head 140 of the embodiment of FIGS. 14-15, with the recesses 1581-1582 having external weights attached to the outer surface of the golf club head 140. The depression 1583 can correspond to a logo or other design located or embossed on the rib surface 1415. However, there may be examples where one or more ribs 1420 do not protrude over one or more indentations 1580. In one example, the ribs 1420 may protrude above the recesses 1583 and the one or more ribs 1420 may end at the contact surface of the one or more recesses 1581-1582. In the same or other embodiments, one or more indentations 1580 may completely cover at least a portion of one or more ribs 1420.

  The ribs 1420 may be configured with a maximum width of about 4.5 millimeters (mm) to about 5 mm and / or a maximum thickness of about 0.5 to about 1.0 mm. More specifically, in the example of FIGS. 14-15, the maximum width of the rib 1420 can be about 4.8 mm, and the maximum thickness of the rib 1420 can be about 0.76 mm.

  In the present embodiment, the rib 1420 does not intersect any rib. Further, the thickness and width of the rib 1420 is integrated with the rib surface 1415 in the vicinity of the front surface 1416. More specifically, each of the ribs 1420 has a front end that tapers toward the front surface 1416 and a rear end that tapers toward the rear surface 1517. At each of the front end and rear end of the rib 1420, the thickness and width gradually decrease in order to be integrated with the rib surface 1415. Such characteristics allow the rib 1420 to receive or pass more stress and / or vibration along its length, without blocking or derailing such passage by intersecting ribs. Dissipate towards or through the part. The integration of the rib 1420 with the rib surface 1415 can reduce stress concentration more than the rib 1420 suddenly protrudes near the front surface 1416. However, in other embodiments, there may be instances where one or more ribs may or may not intersect all of the ribs 1420 and / or one or more ribs 1420 may not be integral with the rib surface 1415. There may be.

  As seen in FIG. 15, in this embodiment, adjacent ribs of the ribs 1420 diverge toward the rear surface 1517 and converge toward the front surface 1416. The body 1410 includes a front portion 1561 and a rear portion 1562 that are separated by an intermediate line 1563. Here, the intermediate line 1563 is substantially parallel to the front surface 1416 at a position substantially half the distance between the foremost point of the front surface 1416 and the backmost point of the back surface 1517. In this embodiment, the front end of each rib 1422-1425 is at the front portion 1561 and the rear end of each rib 1422-1425 is at the rear portion 1562. There may be examples in which all of the ribs 1420 include a front end at the front portion 1561 and a rear end at the rear portion 1562. Further, in the present embodiment, the ribs 1420 are disposed so that the center of gravity of the aggregate is located between the center of gravity of the golf club head 140 and the rear surface 1517. In the same or other examples, the center of gravity of each of the ribs 1420 may be located between the center of gravity of the golf club head 140 and the back surface 1517. As a result, the rib 1420 can favorably move the center of gravity of the golf club head 140 backward from the original position in order to obtain more favorable impact and impact characteristics.

  The embodiment of FIGS. 14-15 also shows a target strike range 1431 on the front surface 1416. The target hitting range 1431 is configured as a desired point that impacts the golf ball under most circumstances. In this embodiment, the longitudinal axis 1523 of the rib 1423 is substantially perpendicular to the striking surface 1430 and coincides with the target striking range 1431. The target hitting shaft 1533 extends substantially perpendicular to the hitting surface 1430 from the center of the target hitting range 1431. Here, in this embodiment, the common point 1550 is located on the target hitting shaft 1533, and the rib longitudinal axes 1521-1525 of the ribs 1421-1425 intersect on the target hitting shaft 1533. The rib longitudinal axis 1523 can be collinear with the target striking axis 1533.

  As seen in FIG. 15, the common point 1550 is separated from the target hitting range 1431 by a distance 1571. The distance 1571 includes about the radius of the golf ball 1570. The distance 1571 may be about 21.3 mm and / or match the radius of a golf ball that conforms to the rules of the US Golf Association (USGA). Currently, the National Golf Association requires that golf balls have a diameter that does not fall below 1.680 inches (42.67 mm). In another example, the common point may be separated from the target hitting range 1431 by a different distance, such as a golf ball diameter.

  In this embodiment, the golf club head 140 may include a sole weight 1590 that is located on at least a part of the sole 1413. The sole weight 1590 is located at the lowest point of the sole 1413, effectively lowering the center of gravity of the golf club head 140, and the sole weight 1590 is molded to fill such lowest point of the sole 1413. Also good. In this embodiment, the sole weight 1590 includes the same material as the sole 1413. However, in the same or other examples, the sole weight 1590 may include a material or a part different from the sole 1413, and / or Alternatively, the sole weight 1590 may be secured to the sole 1413 via a mechanical or chemical fastener such as adhesive, one or more screws, welding, and / or brazing. As shown in FIG. 15, the sole weight 1590 may at least partially cover one or more of the ribs 1420, such as the ribs 1423-1424. In the same or other examples, the thickness of the sole weight 1590 is the thickness of one or more of the covered ribs, as seen in the portion of the ribs 1423-1424 that are included in the thickness of the sole weight 1590. May be absorbed.

  Moving forward, skipping the figure, FIG. 17 shows a top cross-sectional view of the golf club head 170. In this embodiment, the club head 170 is similar to the golf club head 140 (FIGS. 14-15) and includes ribs 1721-1725 similar to the ribs 1421-1425 (FIGS. 14-15). Ribs 1721-1725 are located on rib surface 1715. Rib surface 1715 lacks the features of weights 1590 and depressions 1581-1583 that cover one or more portions of ribs 1721-1725. However, one or more indentations, such as indentations 1581-1583, and / or one or more weights, such as weights 1590, may be located on the rib surface 1715.

  Turning back to the figure, FIG. 16 shows a flowchart of a method 1600 for providing a golf club head. Golf club head 12 (FIGS. 1-3), golf club head 412 (FIGS. 4-5), golf club head 1012 (FIGS. 10-11), golf club head 1212 (FIGS. 12-13), golf club head 140 (FIG. 14-15) and / or variations thereof may be examples of golf club heads that are similar to one or more of the previously described golf club heads.

  The block 1610 of the method 1600 comprises providing a body of a golf club head having a heel end, a toe end, a sole, a front surface and a back surface. In one example, for the embodiment of FIGS. 14-15, the body may be similar to the body 1410, the toe end may be similar to the toe end 1412, the heel end may be similar to the heel end 1411, The sole may be similar to the sole 1413, the front surface may be similar to the front surface 1416, and the back surface may be similar to the back surface 1517. Corresponding relevance is also envisioned for other golf club heads or variations thereof taught herein.

  The block 1620 of the method 1600 comprises providing a plurality of ribs that protrude from the rib surface of the body. In one example, for the embodiment of FIGS. 14-15, the rib surface may be similar to the rib surface 1415 and the plurality of ribs may be similar to the plurality of ribs 1420. For example, the plurality of ribs may include a part of the ribs 1421-1425. Corresponding relevance is also envisioned for the ribs of other golf club heads or variations thereof taught herein. At least some of the plurality of ribs may intersect at a common point outside the body, for example as shown with respect to a common point 1550 located in front of the front surface 1416 of FIG. However, there may be an example in which the common point does not need to be located in front of the front surface of the body. In addition, the plurality of ribs may comprise the same material as the rib surface, or the plurality of ribs may be secured via mechanical or chemical fasteners.

  Providing a plurality of ribs at block 1620 may comprise providing a rib surface and a plurality of ribs inside the body and / or providing a plurality of ribs on the sole of the body. May be. In other examples, the plurality of ribs may be external to the body and / or may be provided at any location, such as the crown of the body and / or the skirt of the body.

  Different blocks of the method 1600 may be added as being executed as a single block or concurrently with other blocks, and / or the order of such blocks may be changed. For example, blocks 1610-1620 may be performed simultaneously by forming a plurality of ribs integral with the rib surface. Here, the rib surface comprises one or more portions of one or more portions of the club head body. The method 1600 may also be an example with further or different blocks. In one example, the method 1600 may comprise a block that provides a weight similar to the sole weight 1590 (FIG. 15). Here, such weights may cover one or more portions of one or more ribs of block 1620. Other variations may be implemented in the method 1600 without departing from the disclosure scope of the present application.

  Golf rules may change from time to time (e.g., new rules may be applied by old standards, such as golf standards bodies and / or governing bodies such as the National Golf Association (USGA), British Golf Association (R & A), etc.) Golf tools for the devices, methods and / or articles of manufacture disclosed herein may or may not conform to golf rules at any time. In addition, golf equipment relating to the devices, methods and / or articles of manufacture disclosed herein may be advertisements, offers for sale, and / or sales that match or do not fit with golf equipment. The apparatus, method and / or article of manufacture disclosed in this application are not limited in this respect.

  Although at least some of the above examples are depicted or described with respect to a fairway wood type golf club head, the devices, methods and articles of manufacture disclosed herein are driver type golf clubs, iron type golf clubs, wedge type golfs. It is also applicable to other types of golf club heads, such as clubs and / or putter type golf clubs. Alternatively, the devices, methods and articles of manufacture disclosed herein are applicable to other sports equipment such as hockey sticks, tennis rackets, fishing rods and skis.

While specific embodiments have been illustrated and described above, it will be apparent to those skilled in the art that various modifications may be made to the specific embodiments without departing from the spirit and scope of the invention. Should be understood. Such variations and modifications are within the scope and teachings of the present invention as defined in the claims appended hereto.

Claims (10)

A body having a heel end, a toe end, a sole, a crown, a front surface, and a skirt portion extending between the heel end and the toe end to form a rear surface;
A plurality of ribs protruding from the rib surface of the body,
The plurality of ribs are
A first rib having a first longitudinal axis;
A second rib having a second longitudinal axis;
A third rib having a third longitudinal axis,
The first rib has a thickness and a width,
The second rib has a thickness and a width,
The third rib has a thickness and a width,
One tip of each of the first rib, the second rib, and the third rib is located in the vicinity of the front surface,
The thickness and width of the one end of each of the first rib, the second rib and the third rib are reduced toward the front surface;
The first longitudinal axis, the second longitudinal axis, and the third longitudinal axis intersect at a common point outside the body;
The rib surface and the plurality of ribs are located on the sole of the body and inside the body,
At least one of the first, second, and third ribs extends at least partially into the skirt portion;
The shape along the longitudinal axis of each of the plurality of ribs is concave with respect to the crown of the golf club head,
The center of gravity of each of the plurality of ribs is located between the center of gravity of the golf club head and the rear surface of the body,
The rib surface has one or more depressions protruding from the rib surface into the body, and the one or more depressions partially cover one or more of the plurality of ribs. In addition, a golf club head, wherein a part of an upper portion of the plurality of ribs protrudes into the body on one or more of the recesses.   The golf club head according to claim 1, wherein the common point is located in front of the front surface.   The golf club head according to claim 1, wherein each of the plurality of ribs is separated from the front surface.   The golf club head according to any one of claims 1 to 3, wherein the first rib, the second rib, and the third rib do not intersect any of the ribs. The body has a front portion and a rear portion;
An intermediate line between the front portion and the rear portion is approximately half of the distance between the foremost point of the front surface and the rearmost point of the rear surface, and the front of the body Substantially parallel to the surface,
The front end of each of the first rib, the second rib, and the third rib is in the front portion;
The golf club head according to any one of claims 1 to 4, wherein a rear end portion of each of the first rib, the second rib, and the third rib is in the rear portion.   6. The golf club head according to claim 1, wherein adjacent ribs of the plurality of ribs are separated from each other toward the rear surface and approach each other toward the front surface. The front surface of the body includes a striking surface having a target striking range;
The golf club head according to any one of claims 1 to 6, wherein the third longitudinal axis of the third rib is substantially orthogonal to the hitting surface and coincides with the target hitting range. The front surface of the body includes a striking surface having a target striking range;
The target hitting axis extends from the center of the target hitting range and is substantially orthogonal to the hitting surface,
The golf club head according to claim 1, wherein the common point is located on the target hitting axis.   The golf club head according to claim 1, wherein the plurality of ribs are integral with the rib surface. The front surface of the body includes a striking surface having a target striking range;
The golf club head according to any one of claims 1 to 9 , wherein the common point is separated from the target hitting range by a length of a substantially radius of the golf ball.

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