JP2023020892A - Wood-type golf club head - Google Patents

Abstract

To provide a wood-type golf club head which can stably yield a flying distance of a golf ball.SOLUTION: In a golf club head 1 according to an aspect of this disclosure, a face member 20 comprises a wall part 22 which is arranged so as to rise from a circumferential edge 25 of a face surface 21, the wall part 22 being arranged over the entire circumferential edge 25 in a circumferential direction. A height H of rising of the wall part 22 is the same or substantially the same over the entire circumferential edge 25 in the circumferential direction, and an angle θ which is formed by the face surface 21 and the wall part 22 is 130° to 140° at a toe-side portion 22b, 112° to 122° at a heel-side portion 22c, 115° to 125° at an upper part 22d as a boundary portion between a face part 2 and a crown part 3, and 90° to 100° at a lower part 22e as a boundary portion between the face part 2 and a soul part 3.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to wood-type golf club heads.

As a document relating to a wood-type golf club head, Patent Document 1 discloses a golf club head having a cup-shaped face member having a face surface for hitting a golf ball.

JP 2004-167115 A

In the golf club head face member disclosed in Patent Document 1, the angle (inner angle) formed by the face surface and the wall portion (extending portion) is 90° or approximately 90° over the entire periphery of the face surface. °. As a result, the deflection of the face surface is reduced at a position near the hosel portion on the peripheral edge of the face member, that is, at a heel-side position on the face surface, and there is a risk that good rebound performance of the golf ball cannot be obtained. Therefore, the flight distance of the golf ball cannot be stably obtained.

Accordingly, the present disclosure has been made to solve the above-described problems, and an object of the present disclosure is to provide a wood-type golf club head that can stably obtain a flight distance of a golf ball.

One aspect of the present disclosure, which has been made to solve the above problems, is a wood-type golf ball comprising a head body and a face member having a face surface, wherein the face member is joined to the head body by welding. In the club head, the face member includes a wall portion that rises from the peripheral edge of the face surface, the wall portion is provided along the entire peripheral edge in the circumferential direction, and the wall portion has a height at which the wall portion rises. The height is the same or substantially the same over the entire circumferential direction of the rim, and is positioned closer to the face side than the hosel so that the welded portion between the face member and the head body does not interfere with the hosel. The wall portion is not chipped near the hosel portion, the weld portion is completely formed on the back side of the face surface, and the face progression is 20 mm or more. wherein the angle formed by the face surface and the wall portion is 130° to 140° at the toe side portion and 112° to 122° at the heel side portion; is 115° to 125° at the upper portion, which is the boundary portion between the face member and the sole portion, and 90° to 100° at the lower portion, which is the boundary portion between the face member and the sole portion.

According to this aspect, the ideal CT value can be obtained even at the heel side position on the face surface, so that the ideal CT value can be obtained over the entire face surface. Therefore, the flight distance of the golf ball can be stably obtained.

In the above aspect, it is preferable that the CT value at the heel side position on the face surface is 210 μs or more.

According to this aspect, the flight distance of the golf ball can be obtained more reliably and stably.

According to the wood-type golf club head of the present disclosure, it is possible to stably obtain a flight distance of the golf ball.

1 is a perspective view of a golf club head of this embodiment; FIG. It is a figure when the golf club head of this embodiment is seen from the crown part side. It is the figure which looked at the golf club head of this embodiment from the toe side. It is the figure which looked at the golf club head of this embodiment from the face side. 1 is an exploded view of the golf club head of this embodiment; FIG. 4 is a perspective view of the face member of the embodiment; FIG. FIG. 2 is a view of the face member of the present embodiment viewed from the back side of the face surface; FIG. 8 is a cross-sectional view taken along the line AA of FIG. 7; FIG. 11 is a view of the face member of the first modified example as seen from the back side of the face surface; FIG. 10 is a cross-sectional view taken along the line BB of FIG. 9; FIG. 10 is a view of a face member of a second modified example as seen from the back side of the face surface; FIG. 12 is a sectional view taken along line CC of FIG. 11;

A golf club head 1, which is an example of an embodiment of a wood-type golf club head of the present disclosure, will be described below.

<Overall Configuration of Golf Club Head>
A golf club head 1 is formed in a hollow body, and as shown in FIGS. 1 and 2, a face portion 2, a crown portion 3, a sole portion 4, a side portion 5, A hosel portion 6 is provided.

The face portion 2 is a portion on which a hitting surface of a golf ball (a face surface 21 to be described later) is formed. The crown portion 3 is a portion that forms the upper portion of the golf club head 1 in the standard state of the golf club head 1 . The sole portion 4 is a portion that forms the lower portion of the golf club head 1 in the standard state of the golf club head 1 . The side portion 5 is a portion forming between the crown portion 3 and the sole portion 4 . The hosel portion 6 is a portion to which a shaft (not shown) is attached.

Here, the "standard state of the golf club head 1" means that the golf club head 1 is arranged at predetermined lie angles α and loft angles β with respect to the horizontal plane HP as shown in FIGS. state. Further, the lie angle α is the angle formed by the central axis CA of the shaft and the horizontal plane HP. The loft angle β is an angle formed by the face surface 21, which will be described later, and a line perpendicular to the ground (horizontal plane HP).

Such a golf club head 1 has a head body 10 and a face member 20, as shown in FIGS.

As shown in FIG. 5, the head main body 10 is formed in a hollow body and is a member forming a crown portion 3, a sole portion 4, a side portion 5 and a hosel portion 6. As shown in FIG.

As shown in FIGS. 1 to 4, the face member 20 is welded to the head body 10 at the weld portion 30 . The face member 20 is a member that forms the face portion 2, and is formed in a cup shape as shown in FIGS. The face member 20 also includes a face surface 21 (a portion forming the face surface) and wall portions 22 . The face member 20 is formed by forging, for example.

The face surface 21 is formed in a plate shape, and has a front surface 23 formed on one surface (surface on the face side) and a rear surface 24 on the other surface (surface on the back side). A surface 23 of the face surface 21 serves as a hitting surface of a golf ball.

The wall portion 22 is provided so as to rise from the peripheral edge 25 of the face surface 21, as shown in FIG. 2 to 5, the tip 22a of the wall 22 is welded to the head body 10, and the tip 22a of the wall 22 and the head body 10 are welded together. The welded portion 30 is the portion where the welded portion is.

<Regarding the face material>
In this embodiment, as shown in FIGS. 5 to 7, the wall portion 22 of the face member 20 is provided along the entire circumferential direction of the peripheral edge 25 of the face surface 21, and extends along the peripheral edge 25 in all directions. It does not have a notched part. That is, the wall portion 22 is not chipped near the hosel portion 6 . The height H at which the wall portion 22 rises (hereinafter simply referred to as “the height H of the wall portion 22”) is the same or substantially the same over the entire peripheral edge 25 in the circumferential direction.

More specifically, the height H of the wall portion 22 is within the range of 0.9 to 1.1 times the target height over the entire circumference of the peripheral edge 25 . As an example of a specific numerical value, the height H should be within the range of 4.5 mm to 5.5 mm over the entire circumferential direction of the peripheral edge 25 when the target height is 5 mm. . The height H is desirably 3.0 mm or more, more preferably 3.5 mm to 10 mm.

Further, in this embodiment, the angle θ formed between the face surface 21 and the wall portion 22 (the inner angle of the face member 20) is an obtuse angle, and the value differs depending on the portion of the peripheral edge 25 in the circumferential direction.

Specifically, as shown in FIG. 2, the angle θ1 formed between the toe side portion 22b of the wall portion 22 and the face surface 21 is 130° to 140°, preferably 134° to 135°. The angle θ2 formed by the heel side portion 22c of the wall portion 22 and the face surface 21 is 112° to 122°, preferably 116° to 117°.

Further, as shown in FIG. 3, the angle θ3 formed by the upper portion 22d of the wall portion 22 and the face surface 21 is 115° to 125°, preferably 116° to 117°. Further, the angle θ4 formed by the lower portion 22e of the wall portion 22 and the face surface 21 is 90° to 100°, preferably 92°. Here, the upper portion 22 d is a boundary portion between the face member 20 (face portion 2 ) and the crown portion 3 . The lower portion 22 e is a boundary portion between the face member 20 (face portion 2 ) and the sole portion 4 .

Further, the CT value at the heel side position P (see FIG. 4) on the face surface 21 is 210 μs or more. More specifically, the position P is the heel-side end of the face surface 21 and substantially the center position in the vertical direction. Also, the actual measured value of the CT value at the position P was 212 μs. Since the actual measured value of the CT value at the same position for the conventional golf club head (where the wall portion is missing near the hosel portion) was 196 μs, the position P of the golf club head 1 of this embodiment It can be seen that the CT value in is greatly improved. Also, the actual measured value of the CT value at the center position on the face surface 21 of the golf club head 1 of this embodiment was 245 to 250 μs.

Further, in the present embodiment, as shown in FIG. 2, when the golf club head 1 is viewed from the crown portion 3 side in the standard state of the golf club head 1, the welded portion 30 has a linear shape. , is positioned closer to the face than the hosel portion 6 so as not to interfere with the hosel portion 6. - 特許庁

In this embodiment, as shown in FIGS. 6 to 8, the face surface 21 of the face member 20 has a central thick portion 31 and a peripheral thin portion 32. As shown in FIGS. The central thick portion 31 is formed in the central portion of the face surface 21, is thicker than the peripheral thin portion 32, and is formed with a uniform thickness. The peripheral thin portion 32 extends along the entire circumferential direction of the peripheral edge 25 inside the peripheral edge 25 of the face surface 21 and outside the central thick portion 31 in the planar direction of the face surface 21 . It is formed so as to surround the central thick portion 31 . The peripheral thin portion 32 is thinner than the central thick portion 31 and has a uniform thickness.

In this way, in the present embodiment, in the surface direction of the face surface 21 (the direction along the paper surface of FIG. 7), the center thickness of the face surface 21 is inside the peripheral edge 25 of the face surface 21 and A peripheral thin portion 32 is provided at a position outside the thick portion 31 (that is, the central portion of the face surface 21). The peripheral thin portion 32 is thinner than the central thick portion 31 and has a uniform thickness over the entire peripheral edge 25 in the circumferential direction. As an example, the central thick portion 31 has a thickness of 2.1 mm to 3.2 mm, while the peripheral thin portion 32 has a thickness of 1.9 mm to 2.4 mm.

As a first modification of the face member 20, the central thick portion 31 and the peripheral thin portion 32 may be formed as shown in FIGS. In this first modified example, as shown in FIG. 9, when the face member 20 is viewed from the back surface 24 side of the face surface 21, the center C1 of the central thick portion 31 is positioned further than the center C0 of the face surface 21. A central thick portion 31 is formed so as to be positioned on the heel side (left side in FIG. 9).

In this manner, for example, when the center of gravity CG (see FIGS. 2 to 4) of the golf club head 1 is designed to have a short center-of-gravity distance and is closer to the heel side, the central thick portion 31 is arranged slightly toward the heel side. Further, the heel side area of the peripheral thin portion 32 is made narrower than the face member 20 shown in FIG. 7, and the thickness of the peripheral thin portion 32 is made smaller than the toe side area. As a result, when the golf ball is hit on the heel side of the face surface 21, or when the golf ball is hit with a short center-of-gravity distance design, the flight distance of the golf ball can be extended.

Further, as a second modification of the face member 20, as shown in FIGS. 11 and 12, an extremely thin peripheral portion 33 may be formed. In this second modification, as shown in FIG. 11, when the face member 20 is viewed from the back surface 24 side of the face surface 21 , the surface direction of the face surface 21 is inside the peripheral edge 25 of the face surface 21 . In addition, a very thin peripheral portion 33 is formed in a portion outside the thin peripheral portion 32 so as to surround the thin peripheral portion 32 along the entire circumferential direction of the peripheral edge 25 . The peripheral ultrathin portion 33 is thinner than the peripheral thin portion 32 and formed with a uniform thickness. Since the peripheral ultra-thin portion 33 is formed in this manner, even when the amount of deflection is increased over the entire face surface 21, the face surface 21 is deflected substantially evenly up to the heel side portion. can let As an example, the thickness of the peripheral ultra-thin portion 33 is 1.8 mm to 2.1 mm.

<About Face Progression>
The golf club head 1 of this embodiment has a face progression FP of 20 mm or more and 40 mm or less. Here, as shown in FIG. 3, the face progression FP means the face progression of the golf club head 1 from the central axis CA of the shaft when the golf club head 1 is viewed from the toe side in the standard state of the golf club head 1 as shown in FIG. It is the distance to the most extreme point (the edge closest to the face, the right edge in FIG. 3), that is, the distance from the central axis CA of the shaft to the leading edge LE. The leading edge LE is a point where the face portion 2 and the sole portion 4 are in contact with each other, and is a point at the tip of the face portion 2 (the edge closest to the face, the edge on the right side in FIG. 3). .

<Action and effect of the present embodiment>
As described above, according to the present embodiment, the angle θ between the face surface 21 and the wall portion 22 is 130° to 140° at the toe side portion 22b and 112° to 122° at the heel side portion 22c. , 115° to 125° at the upper portion 22d and 90° to 100° at the lower portion 22e.

As a result, an ideal CT value (a value indicating repulsion performance of the face surface 21) can be obtained even at the heel side position of the face surface 21, so that an ideal CT value can be obtained over the entire face surface 21. Therefore, the flight distance of the golf ball can be stably obtained.

The wall portion 22 and the peripheral edge 25 are provided over the entire circumferential direction, and the height at which the wall portion 22 rises is the same or substantially the same over the entire circumferential direction of the front edge. The welded portion 30 between the head body 10 and the head body 10 is arranged at a position closer to the face than the hosel portion 6 so as not to interfere with the hosel portion 6, and the wall portion 22 is not chipped in the vicinity of the hosel portion 6. First, the welded portion 30 is formed completely on the back side of the face surface 21 .

In this manner, the wall portion 22 of the face member 20 is provided with the same or substantially the same height H along the entire peripheral edge 25 of the face surface 21 in the circumferential direction. As a result, variations in the amount of deflection of the face surface 21 along the circumferential direction of the peripheral edge 25 of the face surface 21 are reduced at and near the peripheral edge 25 of the face surface 21 . Therefore, a uniform amount of deflection is secured over the entire surface of the face surface 21, and excellent resilience performance of the golf ball is obtained. I can secure the flying distance. Therefore, the flight distance of the golf ball can be stably obtained.

Further, the CT value at the heel side position P (see FIG. 4) on the face surface 21 is 210 μs or more. As a result, the flight distance of the golf ball can be obtained more reliably and stably.

Further, if the wall (periphery) of the face member is missing at a position near the hosel, the head body and the face member are bonded more at the position near the hosel than at other positions. The thickness of the weld bead at the welded portion increases. Therefore, at a position near the hosel portion on the wall portion of the face member, that is, at a heel-side position on the face surface, the deflection of the face surface becomes small, and there is a risk that good rebound performance of the golf ball cannot be obtained.

On the other hand, in the face member 20 of the present embodiment, the wall portion 22 of the face member 20 is provided at the same or substantially the same height H along the entire peripheral edge 25 of the face surface 21 in the circumferential direction. , is not missing at a position near the hosel part 6 .

In this manner, the wall portion 22 of the face member 20 is provided at the same or substantially the same height H over the entire peripheral edge 25 of the face surface 21, so that the welded portion 30 is completely welded. It is formed at a position outside the face surface 21 (that is, at a position closer to the back than the face surface 21). As a result, welded portion swelling (weld bead) in the welded portion 30 does not exist on the face surface 21 . Therefore, even at a position near the hosel portion 6 on the wall portion 22 of the face member 20, that is, at a position on the heel side of the face surface 21, the deflection of the face surface 21 can be ensured, and good rebound performance of the golf ball can be obtained. can be done.

In addition, variations in the CT value caused by manufacturing errors in the golf club head 1 can be reduced, and dimensional tolerances during manufacturing of the golf club head 1 can be reduced. It is possible to manufacture a golf club head 1 with high durability.

In general, a wood-type golf club head has a longer shaft than an iron-type golf club head in order to obtain a longer flight distance of a golf ball. In particular, among wood-type golf club heads, driver-type clubs generally have long shafts in order to obtain the maximum flight distance of the golf ball, and amateur golfers in particular often always make full shots. As a result, when the golf ball is hit with the golf club head, the hitting point of the golf ball on the face tends to vary, resulting in the hitting direction fluctuating up, down, left, and right, and at the same time, the hitting point of the golf ball on the face does not reach the maximum flight distance. By deviating from the so-called sweet spot, the flight distance of the golf ball itself is often greatly impaired.

On the other hand, in the face member 20 of the present embodiment, the wall portion 22 of the face member 20 is provided at the same or substantially the same height H along the entire peripheral edge 25 of the face surface 21 in the circumferential direction. , the area near the hosel portion 6 is not chipped, so it is easy to arrange an area with high rebound performance of the golf ball in the central portion of the face surface 21, and the center of the face surface 21 is located on the toe side and the heel side. It is possible to secure a sufficient amount of flexure to maintain good resilience performance of the golf ball over an evenly wide area. As a result, compared with the conventional face member, it is possible to minimize the distance loss when the golf ball is hit on the heel side of the face surface 21, and to minimize the unpleasant hitting feeling at that time. can.

The height H of the wall portion 22 is within the range of 0.9 to 1.1 times the target height over the entire peripheral edge 25 in the circumferential direction.

Therefore, variations in the amount of deflection of the face surface along the circumferential direction of the peripheral edge 25 of the face surface 21 are more reliably reduced at and near the peripheral edge 25 of the face surface 21 .

Also, the face progression FP is 20 mm or more.

In this manner, the golf club head 1 of the present embodiment has a large face progression FP, so the center-of-gravity distance GD can be shortened. By shortening the center-of-gravity distance GD (preferably 30 mm or less), the moment the golf ball hits the face surface 21 (that is, at the time of impact), the downward bending of the shaft caused by the centrifugal force and the clockwise direction. torsion can be kept small. As a result, good rebound performance of the golf ball can be obtained on the heel side of the face surface 21, and the face surface 21 can be easily operated in the intended direction during the swing of the golf club, making it easy for golfers to handle golf. become a club.

The center-of-gravity distance GD is the length (distance) of a perpendicular line from the extension of the central axis CA of the shaft inserted into the hosel portion 6 to the center-of-gravity CG of the golf club head 1, as shown in FIG.

Moreover, since the face progression FP is large, the welded portion 30 between the head body 10 and the face member 20 can be prevented from being caught on the hosel portion 6 . Therefore, after the head body 10 and the face member 20 are joined by welding at the welded portion 30, the weld bead can be easily polished, so that the finished weld bead of the welded portion 30 can be improved.

Further, as shown in FIG. 2, when the golf club head 1 is viewed from the crown portion 3 side, the welded portion 30 between the head body 10 and the face member 20 has a linear shape, and a shaft is attached thereto. It is arranged at a position closer to the face than the hosel portion 6 .

In this manner, when the golf club head 1 is viewed from the crown portion 3 side, the welded portion 30 between the head body 10 and the face member 20 is formed in a linear shape. , the variation in the amount of deflection between the toe side portion and the heel side portion is reduced. As a result, good rebound performance of the golf ball can be obtained on the heel side of the face surface 21, and the face surface 21 can be easily operated in the intended direction during the swing of the golf club, making it easy for golfers to handle golf. become a club.

As shown in FIGS. 7, 9, 11, etc., the center thickness of the face surface 21 is located inside the peripheral edge 25 of the face surface 21 in the surface direction of the face surface 21, and At a position outside the thick portion 31, a peripheral thin portion 32 having a smaller thickness than the central thick portion 31 of the face surface 21 and a uniform thickness is provided over the entire peripheral edge 25 in the circumferential direction. ing.

In this manner, on the face surface 21 , the central thick portion 31 with a large thickness including the sweet spot SP (that is, the core of the golf club head 1 ) is surrounded by the peripheral thin portion 32 with a small thickness. As a result, good resilience performance of the golf ball can be maintained from the central thick portion 31 of the face surface 21 to the peripheral edge 25 side of the face surface 21 .

Further, in this embodiment, the wall portion 22 of the face member 20 is formed so that the height H is the same or substantially the same over the entire peripheral edge 25 in the circumferential direction. Therefore, it is possible to reduce variations in the amount of deflection in the central thick portion 31 of the face surface 21 over the entire peripheral edge 25 in the circumferential direction, thereby ensuring good resilience performance of the golf ball.

It should be noted that the above-described embodiment is merely an example and does not limit the present disclosure in any way, and of course various improvements and modifications are possible without departing from the gist of the present disclosure.

1 golf club head 2 face portion 3 crown portion 4 sole portion 5 side portion 6 hosel portion 10 head body 20 face member 21 face surface 22 wall portion 22a tip portion 22b toe side portion 22c heel side portion 22d upper portion 22e lower portion 30 weld portion 23 Front surface 24 Back surface 25 Peripheral edge 31 Central thick portion 32 Peripheral thin portion 33 Peripheral ultra-thin portion HP Horizontal plane α Lie angle β Loft angle H Height C0 (face surface) center C1 (central thick portion) center CG (golf club) Head's center of gravity FP Face progression CA Shaft central axis LE Leading edge GD Gravity center distance SP Sweet spot θ, θ1, θ2, θ3, θ4 Angle

Claims (2)

A wood-type golf club head comprising a head body and a face member having a face surface, wherein the face member is joined to the head body by welding,
The face member has a wall portion that rises from the peripheral edge of the face surface,
The wall portion is provided over the entire circumferential direction of the peripheral edge,
The height at which the wall portion rises is the same or substantially the same over the entire peripheral edge in the circumferential direction,
The welded portion between the face member and the head body is arranged at a position closer to the face than the hosel portion so as not to interfere with the hosel portion, and
the wall portion is not chipped in the vicinity of the hosel portion;
The welded portion is completely formed at a position on the back side of the face surface,
The face progression is 20 mm or more,
The angle formed by the face surface and the wall is
130° to 140° at the toe side portion,
112° to 122° at the heel side portion,
115° to 125° at the upper portion, which is the boundary portion between the face member and the crown portion;
90° to 100° at the lower portion, which is the boundary portion between the face member and the sole portion;
A wood-type golf club head characterized by: The wood-type golf club head of claim 1,
The CT value at the heel side position on the face surface is 210 μs or more,
A wood-type golf club head characterized by:

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