Golf club head

The present invention relates to, for example, a golf club head including a metallic head body formed in a hollow structure.

In general, this type of golf club head is a fiber reinforced plastic (FRP), which is a plurality of members formed by forming a metal material such as stainless steel, aluminum alloy, titanium, titanium alloy, etc. into a desired shape by a method such as casting, forging, or pressing. The members formed in (1) are combined by welding, adhesion, etc. to form a hollow structure.

By the way, in such a golf club head, as a means for increasing the flight distance of the ball when hit on the face surface, a plurality of golf club heads are provided in the vicinity of the face surface in the crown portion of the head body along the periphery of the face surface. A head structure in which a plurality of slit rows having slots provided at predetermined intervals on a substantially straight line are formed substantially parallel to each other at predetermined intervals, and the slits of each slit row are arranged in a staggered manner. (See, for example, Patent Document 1). In the case of this head structure, the deformation cycle of the head body is synchronized with the deformation cycle of the ball by the action of the spring support structure between the slit rows, and the flight distance of the ball hit by the face portion is improved.

Further, as a means for increasing the flight distance of the ball, a head structure in which a thin groove or a through hole is formed in the face portion or the crown portion and the relative change of the face portion is increased to improve the flight distance. (See, for example, Patent Document 1).<patcit num="1"><text>Japanese Unexamined Patent Publication No. 6-190088</text></patcit><patcit num="2"><text>Japanese Unexamined Patent Publication No. 10-263118</text></patcit>

<p> However, in the head structure of Patent Document 1, since a slit row is formed in the crown portion to give spring property, the vicinity of the ball hitting portion is deformed, and the deformation direction of the face surface differs depending on the hitting position. Therefore, there is an inconvenience that the direction of the hit ball varies.</p><p> Further, in the head structure of Patent Document 2, the deformation is promoted due to its configuration, the deformation allowable range is large, and the vicinity of the ball hitting portion is easily deformed. It has the inconvenience of causing variation.</p><p> The present invention has been made in view of the above circumstances, and provides a golf club head that has improved the flight distance by stabilizing the direction of the hit ball and improving the initial velocity of the ball. The purpose is to do.</p>

<p> The present invention is a golf club head having a metal head body having a hollow structure, which is continuous with the face portion side of the inner wall of the crown portion of the head body in the toe-heel direction of the head body and has a face surface of the face portion. A thick portion was formed along the above, and a concave portion formed along the face surface of the face portion, which was continuous in the toe-heel direction of the head body, was provided in the thick portion.</p><p> According to the above configuration, when the crown portion is hit, the concave portion of the thick portion regulates the deflection substantially parallel to the face surface of the face portion, so that the crown portion is substantially parallel to the face surface as a whole. It bends in a well-balanced state. Therefore, even if the hitting position with respect to the face surface is slightly different, the direction of the hitting ball is substantially stabilized, and a sufficient repulsive force is obtained by the concave portion of the thick portion, so that the desired initial velocity of the ball can be achieved. The flight distance can be improved.</p>

<p> As described above, according to the present invention, it is possible to provide a golf club head that realizes an improvement in flight distance by stabilizing the direction of a hit ball and improving the initial velocity of the ball. Can be done.</p>

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a golf club head according to an embodiment of the present invention, in which the head body 10 is crowned from a suitable metal material such as titanium, titanium alloy, or stainless steel by casting, forging, pressing, or the like. It is formed in a hollow structure composed of a portion 11, a soul portion 12, and a face portion 13 for hitting a ball. The head body 10 is formed as a metal hollow wood head having a hollow outer shell structure in which the back portion 101 is projected rearward.

Further, the head body 10 is provided with a shaft fastening portion 14 projecting from the crown portion 11 on the heel 102 side. The shaft fastening portion 14 is formed in a tubular shape slightly inclined in the direction of the heel 102, and the tip of the shaft 15 made of a metal such as stainless steel or a fiber reinforced resin is inserted through the socket 16 and bonded to the shaft. Be worn. The protruding length of the shaft fastening portion 14 from the crown portion 11 can be appropriately adjusted, and is not limited to a structure slightly protruding from the crown portion 11 as shown in the figure, and is formed on the same surface as the structure. Alternatively, it can be recessed.

Here, the face portion 13 has a cross-sectional shape that is curved in the toe 103 / heel 102 direction and slightly curved in the crown / sole direction (see FIG. 2), and the sweet spot of the face portion 13 is the head body. Facing the center of gravity G of 10. In the crown portion 11 of the head body 10, a thick portion 20 for increasing the repulsive force is formed continuously on the face portion 13 side of the inner wall thereof, for example, in the toe 103 / heel 102 direction of the face portion 13.

The wall thickness portion 20 is formed so that the wall thickness dimension t1 is t1&gt; t2 with respect to the wall thickness dimension t2 of the crown portion 11. The wall thickness dimension t1 of the wall thickness portion 20 is set to 1.0 to 1.7 mm, for example, assuming that the wall thickness dimension t2 of the crown portion 11 is 0.6 to 1.0 mm. Then, in the thick portion 20, a plurality of concave portions 21 continuous in the toe 103 / heel 102 directions are substantially provided along the face surface of the face portion 13, for example, with a predetermined interval in the curved shape. Formed in parallel. When the concave portion 21 is hit on the face surface of the face portion 13 and bending occurs, the thick portion 20 regulates the concave portion 21 to bend substantially parallel to the face surface, and the ball is repulsed substantially parallel to the ball. Acts like pushing out.

The concave portion 21 has a width dimension of 0.5 to 4.0 mm, preferably 1 to 1.5 mm, and a depth dimension of 0.1 to 0.5 mm, preferably 0.1 to 0.2 mm.

Further, in the crown portion 11, a plurality of protruding ribs 22 extending in the direction of the face surface intersecting the face surface of the face portion 13 are arranged side by side at predetermined intervals on the back portion 101 side of the inner wall thereof. It is formed. The ribs 22 regulate the bending of the crown portion 11 on the back portion 101 side when hit by the face portion 13. For example, when two ribs are provided, the ribs 22 are substantially symmetrically parallel to the center of gravity G or have a predetermined inclination. It is provided with an angle, and when three or more are arranged, it is provided parallel to the center of gravity G or with a predetermined inclination angle.

In the thick portion 20 and the rib 22 provided with the concave portion 21, the end portion of the thick portion 20 on the back portion 101 side and the rib 22 on the face portion 13 side is the most protruding position H of the crown portion 11. That is, it is formed except for a predetermined range including the position most distant from the line connecting the apex position A on the crown 11 side in the curved portion of the back portion 101 and the apex position B on the crown side in the curved portion of the face portion 13. To.

According to the above configuration, when a ball is hit on the face surface of the face portion 13, the striking force causes the crown portion 11 to have the concave portion 21 of the thick portion 20 on the face portion 13 side substantially parallel to the face surface. At the same time as bending, the back portion 101 side is regulated by the rib 21 and the repulsive energy is concentrated on the face surface side. Here, the crown portion 11 efficiently applies a repulsive force to the ball hit on the face surface of the face portion 13 to increase the initial velocity of the ball and improve the flight distance. At this time, even when the hitting position of the face portion 13 is slightly different from the sweet spot, the concave portion 21 of the crown portion 11 imparts a repulsive force substantially parallel to the face surface. As a result, it is possible to obtain a stable direction that is almost the same.

As described above, the golf club head is continuous in the toe-heel direction on the face portion 13 side of the inner wall of the crown portion 11 of the metal head body 10 and forms the thick portion 20 along the face surface of the face portion 13. , The thick portion 20 is continuous in the toe-heel direction, and the concave portion 21 is provided along the face surface.

According to this, when the ball is hit on the face surface of the face portion 13, the crown portion 11 is regulated so that the bending generated in the concave portion 21 is bent substantially parallel to the face surface by the thick portion 20. It acts like pushing out the ball with a repulsive force that is almost parallel. As a result, it is possible to efficiently apply a repulsive force to the ball hit on the face surface of the face portion 13, increase the initial velocity of the ball, and improve the flight distance. At this time, even if the hitting position of the face portion 13 is slightly different from the sweet spot, the crown portion 11 applies a repulsive force substantially parallel to the face surface, so that the face portion 13 is substantially the same. A stable direction can be obtained.

Further, a plurality of ribs 22 extending in a direction intersecting the face surface of the face portion 13 are arranged on the back portion 101 side of the inner wall of the crown portion 11 of the head main body 10. According to this, the rib 22 on the back portion 101 side of the crown portion 11 regulates the deflection of the back portion 101 side, and the repulsive energy can be concentrated on the face surface side, so that the flight distance is further improved. Can be planned.

In the above embodiment, the case where a plurality of concave portions 21 are provided has been described, but the present invention is not limited to this, and for example, only one concave portion 21 is provided in the thick portion 20. It may be configured.

Further, in the above embodiment, the case where the concave groove portion 21 having a substantially curved shape is arranged so as to be along the face surface of the face portion 13 has been described, but the present invention is not limited to this, and the concave groove portion is not limited to this. It is also possible to form 21 so as to be formed on a substantially straight line and arranged along the face surface of the face portion 13.

The present invention is not limited to the above-described embodiment, and other configurations as shown in FIGS. 3 and 4, 5, 6, and 7 can be expected to have substantially the same effect. However, in FIGS. 3 to 7, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

First, in the embodiment shown in FIGS. 3 and 4, on the face portion 13 side of the inner wall of the crown portion 11, a plurality of ridge portions 30 on a substantially straight line constituting the elastic deformation restricting portion are predetermined along the face surface. It is formed substantially parallel with an interval of. The ridge portion 30 regulates the bending of the crown portion 11 at predetermined intervals when hitting a ball, and acts so that the face portion 13 of the crown portion 11 bends substantially parallel to the face surface, resulting in sufficient repulsion. Gives power to the ball. At this time, the face surface of the face portion 13 is bent substantially parallel to the surface, so that a desired directionality is ensured even when the striking point positions are different.

Then, on the back portion 101 side of the inner wall of the crown portion 11, a plurality of, for example, two ribs 31 are formed so as to extend in the face surface direction intersecting the face surface of the face portion 13. In these ridges 30 and ribs 31, the ends of the ridges 30 and ribs 31 arranged on the back portion 101 side most on the face surface side are the most protruding positions H of the crown portion 11, that is, the back portion 101. It is formed except for a predetermined range including the position most distant from the line connecting the apex position A on the crown 11 side of the curved portion and the apex position B on the crown 11 side of the curved portion of the face portion 13.

Of these, the two ribs 31 are provided substantially in parallel in FIG. 4, but the present invention is not limited to this, and the two ribs 31 are also provided so as to be inclined and intersect with respect to the face surface of the face portion 13. You may. The other ridge portion 30 is configured to be formed on a substantially straight line in FIG. 4, but is not limited to this, and is formed in a substantially curved shape and is formed along the face surface of the face portion 13. It is also possible.

In the embodiment of FIGS. 3 and 4 above, the case where a plurality of ridges 30 are provided has been described, but the present invention is not limited to this, and for example, only one ridge 30 is provided as a crown. 11 It may be configured to be provided on the inner wall.

Further, in the embodiment of FIGS. 3 and 4 above, the case where the ridge portion 30 for elastic deformation regulation is provided and configured has been described, but the present invention is not limited to this, and the crown is replaced with the ridge portion 30. It is also possible to configure the inner wall of the portion 11 to have a concave portion forming the elastic deformation restricting portion along the face surface of the face portion 13 in the same manner. When the concave portion as the elastic deformation regulating portion is provided on the inner wall of the crown portion 11, the crown portion along the concave portion regulates the bending, and substantially the same effect can be expected.

In the embodiment shown in FIG. 5, on the face portion 13 side of the inner wall of the crown portion 11, a plurality of substantially curved ridge portions 40 constituting the elastic deformation restricting portion have a predetermined interval along the face surface. Is formed substantially in parallel. Then, on the back portion 101 side of the inner wall of the crown portion 11, a plurality of, for example, three ribs 41 arranged at predetermined intervals as described later intersect the face surface of the face portion 13. It is formed by extending in the direction.

In these ridges 40 and ribs 41, the ends of the ridges 40 and ribs 41 arranged on the back portion 101 side most on the face surface side are the most protruding positions H of the crown portion 11, that is, the back portion 101. It is formed except for a predetermined range including the position most distant from the line connecting the apex position A on the crown 11 side of the curved portion and the apex position B on the crown 11 side of the curved portion of the face portion 13.

Of these, the three ribs 41 are arranged so that the central portion corresponds to the center of gravity G and both end portions have a predetermined inclination angle and intersect the ridge portion 40. The three ribs 41 may be arranged substantially parallel to each other and intersect with the face surface of the face portion 13 instead of being arranged so as to be inclined to each other. The other ridge portion 40 is configured to be formed in a substantially curved shape in FIG. 5, but is not limited to this, and is formed on a substantially straight line and along the face surface of the face portion 13. It is also possible.

Further, in the embodiment of FIG. 5 above, the case where the ridge portion 40 is provided as the elastic deformation restricting portion on the face portion 13 side of the inner wall of the crown portion 11 has been described, but the present invention is not limited to this. It is also possible to configure the concave portion as the elastic deformation restricting portion so as to be provided in place of the ridge portion 40.

Further, in the embodiment shown in FIGS. 6 and 7, a plurality of substantially linear concave portions 50 are arranged at predetermined intervals along the face surface of the face portion 13 on the face portion 13 side of the inner wall of the crown portion 11. It is formed. The concave portion 50 is the most protruding position H of the crown portion 11, that is, the apex position A on the crown portion 11 side in the curved portion of the back portion 101 and the apex on the crown portion 11 side in the curved portion of the face surface of the face portion 13. It is provided up to the vicinity of the position farthest from the line connecting the positions B.

Then, on the back portion 101 side of the inner wall of the crown portion 11, a plurality of, for example, two ribs 51 are formed so as to extend in the direction of the face surface intersecting the face surface. In this rib 51, the end portion on the face portion 13 side is the most protruding position H of the crown portion 11, that is, the apex position A on the crown portion 11 side in the curved portion of the back portion 101 and the curvature of the face surface of the face portion 13. It is formed except for a predetermined range including the position most distant from the line connecting the apex positions B on the crown portion 11 side of the portion.

Of these, the two ribs 51 are provided substantially in parallel in FIG. 7, but the present invention is not limited to this, and other ribs 51 may be provided so as to be inclined and intersect with respect to the face surface. The other concave portion 50 is configured to be formed on a substantially straight line in FIG. 7, but is not limited to this, and is formed in a substantially curved shape and is formed along the face surface of the face portion 13. You may.

In the embodiment of FIGS. 6 and 7, the case where the concave portion 50 is directly provided on the face portion 13 side of the inner wall of the crown portion 11 has been described, but the present invention is not limited to this. In addition, for example, it is also possible to form a thick portion and similarly provide the concave portion 50 in the thick portion.

Therefore, the present invention is not limited to the above-described embodiment, and it is possible to carry out various modifications at the implementation stage without departing from the gist thereof. Further, the above-described embodiment includes inventions at various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent requirements.

For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problems described in the column of the problems to be solved by the invention can be solved, and the effects described in the effect of the invention can be obtained. In some cases, a configuration in which this configuration requirement is deleted can be extracted as an invention.

<figref num="1">It is a perspective view which showed the appearance structure of the golf club head which concerns on one Embodiment of this invention.</figref><figref num="2">It is sectional drawing which showed the CC of the head body of FIG. 1 in cross section.</figref><figref num="3">It is sectional drawing which showed the main part of the golf club head which concerns on other embodiment of this invention in cross-section.</figref><figref num="4">It is a perspective view which showed the arrangement relation of the concave part and the rib in the head body of FIG.</figref><figref num="5">It is a perspective view which showed the arrangement structure of the golf club head which concerns on other embodiment of this invention.</figref><figref num="6">It is sectional drawing which showed the main part of the golf club head which concerns on other embodiment of this invention in cross-section.</figref><figref num="7">It is a perspective view which showed the arrangement relation of the concave part and the rib in the head body of FIG.</figref>

Code description

10 ... head body, 101 ... back part, 102 ... heel, 103 ... toe, 11 ... crown part, 12 ... sole part, 13 ... face part, 14.. .Shaft fastening part, 15 ... shaft, 16 ... socket, 20 ... thick part, 21 ... concave part, 21 ... rib, 30 ... ridge part, 31. .. ribs, 40 ... ridges, 41 ... ribs, 50 ... concaves, 51 ... ribs.