JP6046570B2 - Golf club head - Google Patents

Description

  The present invention relates to a golf club head, and more particularly to a golf club head having a hollow structure.

  Conventionally, golf club heads having such a hollow structure have been known in which ribs are provided on the inner surface of a sole or the like in order to make the hitting sound more preferable (high sound). Such ribs, for example, analyze the natural mode of the head by a simulation such as a finite element method, and provide a rib at the antinode portion of the analyzed vibration to suppress the amplitude, thereby realizing a more preferable hitting sound ( For example, see Patent Document 1).

JP 2011-136110 A

  However, in the rib design based on such a simulation, it is difficult to perform the simulation in consideration of the presence of a step formed on the outer surface of the sole, such as a groove, an inclination, or a dent, so that the outer surface of the sole is flat. As a premise, eigenmode analysis is performed. Therefore, even if the rib is designed based on the result of the simulation, the actual hitting sound may be different from the intended sound due to the presence of the step formed on the outer surface of the sole.

  An embodiment of the present invention has an object of realizing a more preferable hitting sound in consideration of a step formed on the outer surface of the sole. Other objects of the embodiments of the present invention will become apparent by referring to the entire specification.

  A golf club head according to an embodiment of the present invention is a golf club head having a hollow structure, and includes a face portion that forms a ball striking surface, a back portion that forms a rear portion opposite to the face portion, and an outer surface. A first step portion having a first portion extending in a direction inclined with respect to the hitting surface so as to be closer to the heel side toward the face portion side, and to approach the toe side toward the face portion side. A second step portion extending in a direction inclined with respect to the striking surface and having a second portion located on the toe side with respect to the first portion, and provided on an inner surface of the first step portion. A first rib crossing the first portion; a second rib crossing the second portion of the second step portion; a third rib connecting the first rib and the second rib; A sole that forms a bottom surface And, equipped with a. Here, the “step portion” may include “inclination”, “groove”, “dent” and the like provided on the outer surface of the sole portion.

  A golf club head according to another embodiment of the present invention is a golf club head having a hollow structure, and includes a face portion that forms a ball striking surface, a back portion that forms a rear portion opposite to the face portion, and an outer surface. In addition, a first step portion having a first portion extending in a direction inclined with respect to the hitting surface so as to be closer to the heel side as being closer to the back portion side, and being closer to the toe side as being closer to the back portion side. A second step portion extending in a direction inclined with respect to the hitting surface and having a second portion located on the toe side with respect to the first portion, and an inner surface of the first step portion. A first rib crossing the first portion, a second rib crossing the second portion of the second stepped portion, and a third rib connecting the first rib and the second rib And a sole portion that forms a bottom surface , Comprising a.

  According to various embodiments of the present invention, a more favorable hitting sound can be realized in consideration of a step formed on the outer surface of the sole.

1 is a configuration diagram of a golf club 10 including a golf club head 100 according to an embodiment. 1 is a top view of a golf club head 100. FIG. FIG. 3 is a bottom view of the golf club head 100. FIG. 3 is a perspective view of a rib formed on the inner surface of a sole portion 140 of the golf club head 100. The bottom view of golf club head 500 concerning other embodiments.

  Hereinafter, various embodiments will be described with reference to the drawings as appropriate. In addition, the same referential mark is attached | subjected to the common component in drawing.

  FIG. 1 is a configuration diagram illustrating a configuration of a golf club 10 including a golf club head 100 according to an embodiment of the present invention. As shown in FIG. 1, a golf club 10 includes a grip G formed of natural rubber, synthetic rubber, or the like, a shaft S bonded to the grip G and formed into a tubular shape with a fiber reinforced resin or a metal material, and the shaft. A golf club head (hereinafter, simply referred to as “head”) 100 according to an embodiment coupled to S via a hosel HZ.

  FIG. 2 is a top view of the head 100 according to an embodiment, and FIG. 3 is a bottom view of the head 100. The head 100 has a hollow structure in which an outer shell is formed of a metal material such as stainless steel, titanium, or a titanium alloy. As shown in FIG. 2, a crown portion 110 that forms the upper surface of the head 100 and a ball striking surface are formed. Through the face portion 120, the toe side portion 130, the heel side portion 135, the sole portion 140 that forms the bottom surface, the back portion 150 that forms the rear portion opposite to the face portion 120, and the hosel HZ. And a hosel support 20 formed in a cylindrical shape connected to the shaft S.

  As shown in FIG. 3, the sole portion 140 of the head 100 according to an embodiment is provided with an inclined portion 210 and a groove portion 220 located on the toe side of the inclined portion 210 on the outer surface (bottom surface). . The inclined portion 210 extends curvedly from the back portion 150 side of the heel side portion 135 toward the face portion 120 side, and has a curved vertex on the back portion 150 side near the center of the outer surface of the sole portion 140. The portion extending from the apex of the curve toward the face portion 120 side of the heel side portion 135 extends in a direction inclined with respect to the hitting surface so as to approach the heel side portion 135 toward the face portion 120 side. In addition, on the outer surface of the sole portion 140, a region on the heel side with respect to the inclined portion 210 is recessed, so that a good air flow (reduction in air resistance) at the time of swing is achieved. As shown in FIG. 3, the groove 220 extends from the toe side part 130 side of the back part 150 toward the center of the outer surface of the sole part 140, and then hits the ball so as to approach the toe side part 130 toward the face part 120 side. Branching into three grooves while extending in a direction inclined with respect to the surface, the three branched grooves reach different positions on the toe side portion 130. The groove portion 220 improves the repulsive force of the face portion 120. Note that the shapes and positions of the inclined portions 210 and the groove portions 220 are merely examples, and the shapes and positions of the inclined portions 210 and the groove portions 220 as stepped portions are not limited thereto. For example, the positions of the inclined part and the groove part may be reversed, both may be formed as an inclined part, both may be formed as a groove part, or both or one may be formed as a concave part. good.

  As shown by a dotted line in FIG. 3, the inner surface of the sole portion 140 is inclined with respect to the ball striking surface so that the portion on the face portion 120 side of the inclined portion 210 (the closer to the heel side portion 135 the closer to the face portion 120 side). In a direction inclined with respect to the ball striking surface so as to be closer to the toe side portion 130 toward the face portion 120 side. A rib 320 that crosses the extending portion) so as to be substantially orthogonal to each other, a rib 330 that extends in a direction substantially parallel to the striking spherical surface, and connects the end of the rib 310 on the face 120 side and the end of the rib 320 on the face 120. Starting from the end portion on the face portion 120 side of 310, the face portion 120 side extends in a direction away from the toe-heel direction center (heel direction) of the hitting surface. And Bed 340, toe of the ball striking face to the face portion 120 side face portion 120 side end portion of the rib 320 as a starting point - and a rib 350 extending in a direction (toe direction) away from the heel direction center is provided. These ribs 310-350 can be formed using the same material as the outer shell of the head 100. The ribs 330, 340, and 350 are provided so as not to cross a stepped portion provided on the outer surface of the sole portion 140 such as the inclined portion 210 and the groove portion 220. In the example of FIG. 3, the rib 320 is provided so as to cross all three of the grooves that the branch of the groove 220 branches. However, the rib 320 crosses two of the three grooves that are located on the face part 120 side. Alternatively, only one groove located closest to the face 120 may be crossed.

  Here, in one embodiment, the rib 330 that connects the rib 310 and the rib 320 is provided at a specific distance (for example, 40 mm) from the ball striking surface. Further, the ribs 340 and 350 extending from the end portions on the face portion 120 side of the ribs 310 and 320, respectively, extend to a portion away from the hitting surface by a specific distance (for example, 15 mm) and do not reach the face portion 120. It is provided as follows. As described above, the ribs are provided so as to avoid a predetermined range near the face portion 120 (ball striking surface), thereby preventing a reduction in the repulsive force of the face portion 120.

  In one embodiment, ribs 340 and 350 are formed at a lower height than ribs 310, 320, and 330 (see FIG. 4). For example, the ribs 310, 320 and 330 are formed with a height of 4.0 mm, and the ribs 340 and 350 are formed with a height of 2.5 mm. Thereby, the center of gravity of the head 100 is prevented from becoming shallow (the center of gravity approaches the face portion 120 side).

  In the head 100 configured in this manner, vibration mode antinodes appearing in the vicinity of the inclined portion 210 and the groove portion 220 at the time of hitting are suppressed by the rib 310 and the rib 320. Further, since the rib 310 and the rib 320 are connected by the rib 330, vibration mode antinodes that appear in the vicinity of the region between the rib 310 and the rib 320 are suppressed by the rib 330. As a result, it is possible to suppress the vibration of the hitting sound in the head 100 by suppressing the amplitude of vibration. Furthermore, since the ribs 340 and 350 extending from the end of the rib 310 and the rib 320 on the face 120 side as a starting point are provided, the amplitude of vibration can be suppressed in a wider range. Further, since the rib 340 and the rib 350 extend in the direction away from the center of the hitting surface in the toe-heel direction, the sweet area of the head 100 can be increased compared to the case of extending in the direction approaching the center of the toe-heel direction. In addition, the elastic deflection of the face part 120 at the time of hitting can be maintained.

  As described above, in the golf club head 100 according to the embodiment, the rib that crosses the portion (first portion) on the face portion 120 side of the inclined portion 210 (first step portion) on the inner surface of the sole portion 140. 310 (first rib), rib 320 (second rib) crossing a portion (second portion) on the face portion 120 side of groove 220 (second stepped portion), and rib 310 and rib 320 are connected. Ribs 330 (third ribs) are provided. By adopting such a configuration, vibration mode antinodes appearing in the vicinity of the inclined portion 210 and the groove portion 220 at the time of hitting can be suppressed by the rib 310 and the rib 320, and vibration appearing in the vicinity of the region between the rib 310 and the rib 320. The belly of the mode can be suppressed by the rib 330. As a result, it is possible to suppress the vibration amplitude and increase the hitting sound of the head 100.

  In one embodiment, the ribs 310, 320, 330, 340, and 350 are illustrated as ribs formed on the inner surface of the sole portion 140, but the ribs formed on the inner surface of the sole portion 140 are not limited to the illustrated modes. For example, the rib 340 extending from the end portion on the face portion 120 side of the rib 310 and the rib 350 extending from the end portion on the face portion 120 side of the rib 320 may not be provided. Moreover, the rib 310 and the rib 320 should just cross the inclination part 210 and the groove part 220, and do not need to be substantially orthogonal. Furthermore, the rib 330 is only required to be formed so as to connect the rib 310 and the rib 320, and is not necessarily formed so as to be connected at the end portion on the face portion 120 side, and is substantially parallel to the hitting surface. It doesn't have to be.

  Next, a golf club head 500 according to another embodiment of the present invention will be described. Similar to the golf club head 100 according to one embodiment, the golf club head 500 according to another embodiment includes a crown portion 510 that forms the upper surface of the head 500, a face portion 520 that forms a ball striking surface, and a toe side. Part 530, heel side part 535, sole part 540 forming the bottom surface, back part 550 forming the rear part opposite to the face part 520, and a cylindrical shape connected to the shaft S via the hosel HZ And a formed hosel support 20.

  FIG. 5 is a bottom view of a head 500 according to another embodiment. As shown in the drawing, the sole portion 540 of the head 500 according to another embodiment has a first recess 610 on its outer surface (bottom surface) and a second recess 620 positioned on the toe side of the first recess 610. And are provided. The first recess 610 tapers from the back portion 550 side of the heel side portion 535 toward the face portion 520 near the center of the outer surface of the sole portion 540, in other words, the face portion 520 near the center of the outer surface of the sole portion 540. A portion extending in a direction inclined with respect to the hitting surface so as to be closer to the heel side portion 535 as the back portion 550 side starts from the side. The second recess 620 tapers from the back portion 550 side of the toe side portion 530 to the face portion 520 side near the center of the outer surface of the sole portion 540, in other words, the face near the center of the outer surface of the sole portion 540. From the part 520 side as a starting point, the back part 550 side has a part extending in a direction inclined with respect to the hitting surface so as to be closer to the toe side part 530.

  As shown by a dotted line in FIG. 5, on the inner surface of the sole portion 540, a rib 710 that crosses the first recess 610 so as to be substantially orthogonal, a rib 720 that crosses the second recess 620 so as to be substantially orthogonal, and a rib A rib 730 extending in a direction substantially parallel to the striking spherical surface is provided to connect the back portion 550 side end portion of 710 and the back portion 550 side end portion of the rib 720. The head 500 according to another embodiment configured in this manner is similar to the head 100 according to the embodiment in that the antinodes of the vibration mode appearing in the vicinity of the first recess 610 and the second recess 620 at the time of hitting are the ribs 710 and It is restrained by the rib 720. In addition, since the rib 710 and the rib 720 are connected by the rib 730, vibration mode antinodes that appear in the vicinity of the region between the rib 710 and the rib 720 are suppressed by the rib 730. As a result, it is possible to suppress the vibration of the hitting sound in the head 500 by suppressing the amplitude of vibration.

  As described above, in the golf club head 500 according to another embodiment, the rib 710 (first rib) crossing the first recess 610 (first stepped portion) is formed on the inner surface of the sole portion 540, and the first A rib 720 (second rib) that crosses the second recess 620 (second stepped portion) and a rib 730 that connects the rib 710 and the rib 720 (third rib) are provided. By adopting such a configuration, like the golf club head 100 according to an embodiment, the vibration mode antinodes appearing in the vicinity of the first concave portion 610 and the second concave portion 620 at the time of hitting can be suppressed by the rib 710 and the rib 720. Further, vibration ribs appearing in the vicinity of the region between the rib 710 and the rib 720 can be suppressed by the rib 730. As a result, it is possible to suppress the vibration amplitude and increase the hitting sound of the head 500.

  In other embodiments, ribs 710, 720, and 730 are illustrated as ribs formed on the inner surface of the sole portion 540, but the ribs formed on the inner surface of the sole portion 540 are not limited to the illustrated modes. For example, similarly to the golf club head 100 according to one embodiment, a rib extending from the end portion on the back portion 550 side of the rib 710 or a rib extending from the end portion on the back portion 550 side of the rib 720 may be further provided. good. Further, the rib 710 and the rib 720 may cross the first concave portion 610 and the second concave portion 620, and may not be substantially orthogonal. Further, the rib 730 may be formed so as to connect the rib 710 and the rib 720, and does not necessarily need to be formed so as to be connected at the end portion on the back portion 550 side, and is substantially parallel to the hitting surface. It doesn't have to be.

100,500 golf club head (head)
110,510 Crown part 120,520 Face part 130,530 Toe side part 135,535 Heel side part 140,540 Sole part 150,550 Back part 210 Inclined part 220 Groove part 610,620 Recessed part 310,320,330,340 , 350,710,720,730 ribs

Claims (9)

A golf club head having a hollow structure,
A face portion forming a ball striking surface;
A back portion forming a rear portion opposite to the face portion;
A first step portion having a first portion extending in a direction inclined with respect to the hitting surface so as to be closer to the heel side toward the face portion side on the outer surface, and closer to the toe side toward the face portion side. And a second step portion having a second portion extending in a direction inclined with respect to the ball striking surface and positioned on the toe side of the first portion, and the first step portion on the inner surface. A first rib that crosses the first portion, a second rib that crosses the second portion of the second step portion, and a third rib that connects the first rib and the second rib. A sole portion provided with a rib and forming a bottom surface;
And the third rib extends in a direction substantially parallel to the hitting surface . The third rib, golf club head according to claim 1, wherein provided at predetermined intervals from the ball striking surface. The third rib claim 1 or 2 golf club head according not cross the step portion provided on the outer surface. It said third rib, said first rib the face portion side end portion and the second rib the face portion side end of the claims 1 to 3 golf club head according to any connecting of. The sole portion has, on the inner surface , a fourth rib extending to the face portion side starting from the face portion side end portion of the first rib and / or a face portion side end portion of the second rib. 5. A golf club head according to claim 4, further comprising a fifth rib extending toward the face portion. The golf club head according to claim 5, wherein the fourth rib and / or the fifth rib extend in a direction away from a center in a toe-heel direction of the hitting surface. The golf club head according to claim 5 or 6, wherein the fourth rib and / or the fifth rib are formed at a height lower than that of the first rib and / or the second rib. Said first rib and / or the second rib, said first portion or said second portion of the claims 1 to 7 golf club head according traversed so as to be substantially orthogonal. A golf club head having a hollow structure,
A face portion forming a ball striking surface;
A back portion forming a rear portion opposite to the face portion;
On the outer surface, a first step portion having a first portion extending in a direction inclined with respect to the hitting surface so as to approach the heel side toward the back portion side, and to approach the toe side toward the back portion side. And a second step portion having a second portion extending in a direction inclined with respect to the ball striking surface and positioned on the toe side of the first portion, and the first step portion on the inner surface. A first rib that crosses the first portion, a second rib that crosses the second portion of the second step portion, and a third rib that connects the first rib and the second rib. A sole portion provided with a rib and forming a bottom surface;
And the third rib extends in a direction substantially parallel to the hitting surface .

Images