JP2021145977A - Golf club head and gold club - Google Patents

Abstract

To provide a golf club head and a golf club comprising the same which allow a player to easily aim a direction of a hit ball toward a target direction when the player addresses.SOLUTION: A golf club head according to one aspect of the present invention is a golf club head comprising a head body that can be attached to a shaft. The head body has a sole part and a face part including a curved face surface and extending upward from the sole part. The face surface is curved so as to project upward and has one or more marking lines extending in a toe-heel direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to golf club heads and golf clubs.

Golf club heads having a curved face surface such as a utility type golf club head and a fairway wood type golf club head are used. A linear score line is usually formed on the face surface of this type of golf club head in order to impart rotation to the golf ball.

In the golf club head having the curved face surface described above, a relatively large loft angle is set so that the hit ball rises. Further, the radius of curvature of the face surface is set to be relatively large in order to give a gear effect and avoid slicing at the time of hitting the ball. When a linear score line is formed on the curved face surface of the golf club head, the score line may appear to be curved when the player addresses. When the score line looks curved, it is difficult for the player to determine the hitting point on the face surface, and it is difficult for the player to aim the hitting ball in the target direction.

In view of the above circumstances, it is an object of the present invention to provide a golf club head capable of easily aiming the direction of a hit ball toward a target when a player addresses, and a golf club provided with the head.

A golf club head according to an aspect of the present invention made to solve the above problems is a golf club head including a head body that can be attached to a shaft, and the head body has a sole portion and a curved face. It has a face portion including a surface and extends upward from the sole portion, and the face surface is curved so as to project upward and has one or a plurality of marking lines extending in the toe-heel direction.

The head width of the head body is preferably 50 mm or more.

The loft angle of the golf club head is preferably 18 ° or more and 30 ° or less.

The radius of curvature of the face surface is preferably 400 mm or more.

The radius of curvature of the marking line is preferably 200 mm or more and 600 mm or less.

It is preferable that the plurality of marking lines are arranged at equal intervals from each other.

It is preferable that the marking line is formed by laser processing.

A golf club according to an aspect of the present invention made to solve the above problems is a golf club including a shaft and a golf club head having a head body that can be attached to the shaft. One or one having a sole portion and a face portion including a curved face surface and extending upward from the sole portion, the face surface being curved so as to project upward and extending in the toe-heel direction. It has multiple marking lines.

The "face surface" means a striking surface, and the "face portion" means a portion having a face surface (striking surface). The "head width" is a projection drawing projected onto a plane perpendicular to the axis corresponding to the central axis of the shaft, and is the farthest from the tangent line in the direction perpendicular to the tangent line at the leading edge of the face portion and the face portion of the head body. It means the distance between the edge and the edge. In the following, "front" means the hitting side, and "rear" means the opposite side. The "vertical direction" means the vertical direction in a state where the golf club head is installed on a horizontal plane so as to have a preset loft angle and lie angle, and the "toe / heel direction" means the vertical direction in the above state. It means the horizontal direction perpendicular to the front-back direction.

The golf club head according to the present invention is curved so as to project upward, and the face surface has a marking line extending in the toe-heel direction, so that the marking line is straight or straight when the player addresses. It looks like a line that is close to a straight line (hereinafter, these are also collectively referred to as "straight line"). Therefore, the golf club head can easily aim the direction of the hit ball toward the target when the player addresses. Since the golf club according to the present invention includes the golf club head, it is possible to easily aim the direction of the hit ball toward the target when the player addresses, as described above.

It is a schematic side view which shows the golf club head which concerns on one Embodiment of this invention. It is a schematic front view of the golf club head of FIG. It is a schematic top view of the golf club head of FIG.

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

[First Embodiment]
<Golf club head>
1, FIG. 2 and FIG. 3 show a fairway wood type golf club head 1 according to an embodiment of the present invention. 1 to 3 show golf club heads arranged on a horizontal plane so as to have a set lie angle and loft angle, respectively.

As shown in FIGS. 1 to 3, the golf club head 1 includes a head body 2 that can be attached to the shaft 20. 1 to 3 show a state in which the golf club head 1 is attached to the shaft 20.

(Head body)
The head body 2 can be attached to the shaft body 20. The head body 2 has a face portion 3 including a curved face surface 3a, a sole portion 4 extending from the lower edge of the face portion 3 to the back surface side (rear), and a head main body 2 from the upper edge of the face portion 3 to the back surface side (rear). An extending crown portion 5 and a hosel portion 6 provided on the crown portion are provided. The hosel portion 6 has a hole for attaching the shaft, and the central axis of the hole coincides with the central axis S of the shaft 20.

In the projection drawing projected on the plane perpendicular to the central axis S of the shaft mounting hole, the distance L1 between the tangent line and the center of gravity G in the direction perpendicular to the tangent line at the leading edge of the face portion 3 is particularly limited. However, it can be set as appropriate. For example, as the lower limit of the distance L1, 25 mm is preferable, and 30 mm is more preferable. The upper limit of the distance L1 is not particularly limited and may be set as appropriate. For example, the upper limit of the distance L1 is preferably 50 mm, more preferably 45 mm.

The head width L2 of the head body 2 is not particularly limited and may be set as appropriate. For example, as the lower limit of the head width L2, 50 mm is preferable, and 60 mm is more preferable. The upper limit of the head width L2 is not particularly limited and may be set as appropriate. For example, the upper limit of the head width L2 is preferably 100 mm, more preferably 90 mm.

The loft angle of the head body 2 is not particularly limited and may be set as appropriate. For example, as the lower limit of the loft angle, 18 ° is preferable, and 20 ° is more preferable. The upper limit of the loft angle is preferably 30 °, more preferably 25 °.

When the head body 2 has the above-mentioned shapes of the distance L1, the head width L2, and the loft angle, the center of gravity G is far from the face surface 3a, so that the hit ball can easily rise. Then, while the ball is likely to rise, spin is applied to the ball when the hitting point is removed in the toe-heel direction, and the directionality is likely to decrease. Therefore, the directionality of the hit ball is ensured by forming the face surface 3a into a curved surface as described later.

The golf club head 1 is used as a golf club with the shaft 20 connected to the hosel portion 6 of the head body 2. The head body 2 is mainly composed of a metal or alloy such as iron or stainless steel.

(Face part)
The face portion 3 has a curved face surface 3a that constitutes a striking surface. The face surface 3a has one or more marking lines 10 (plural in FIG. 2) that are curved so as to project upward and extend in the toe-heel direction.

The radius of curvature of the face surface 3a is not particularly limited and may be set as appropriate. For example, as the lower limit of the radius of curvature of the face surface 3a, 400 mm is preferable, and 500 mm is more preferable. The upper limit of the radius of curvature of the face surface 3a is preferably 800 mm, more preferably 700 mm. If the radius of curvature of the face surface 3a is less than the lower limit, the operability of the golf club provided with the golf club head 1 may be deteriorated. On the other hand, when the radius of curvature of the face surface 3a exceeds the upper limit, the curved surface of the face surface 3a may be too gentle and the marking line 10 may not be seen as a straight line.

The marking line 10 is curved so as to project upward and extends in the toe-heel direction. The shape of the marking line 10 is not particularly limited as long as it is curved so as to project upward. Further, the shape of the marking line 10 is not particularly limited as long as the marking line 10 looks straight when the player addresses.

The radius of curvature of the marking line 10 is not particularly limited and may be appropriately set so that the marking line 10 looks linear when the player addresses. For example, as the lower limit of the radius of curvature of the marking line 10, 200 mm is preferable, and 300 mm is more preferable. The lower limit of the radius of curvature of the marking line 10 is preferably 600 mm, more preferably 500 mm. If the radius of curvature of the marking line 10 is less than the lower limit, it may be difficult for the marking line 10 to appear linear when the player addresses. On the other hand, even when the radius of curvature of the marking line 10 exceeds the upper limit, it may be difficult for the marking line 10 to appear linear.

The marking line 10 may have an arc shape when viewed from the front, for example. When the marking line 10 has an arc shape, the marking line 10 may have a part where the distance from the center of the arc is different from the radius of curvature of the arc. The difference between the distance from the center of the different portions and the distance tsu radius may be preferably within 10%, more preferably within 5% in absolute value.

The plurality of marking lines 10 may be arranged at equal intervals from each other. Since the plurality of marking lines 10 are evenly spaced from each other, the marking lines 10 are easily visible to the player when the player addresses. Further, from the viewpoint of easy visibility, it is preferable that the plurality of marking lines 10 do not intersect with each other.

The method of forming the marking line 10 is not particularly limited. For example, it is preferable that the marking line 10 has a small adverse effect such as spin on the ball. In consideration of this viewpoint, for example, it is preferable to appropriately adopt a method for forming the marking line 10 so that the thickness and depth of the marking line 10 can reduce the adverse effects such as spin. Examples of such a forming method include known laser processing such as irradiating the face surface 3a with laser light, known printing such as printing on the face surface 3a, and known coating such as coating on the face surface 3a.

The fairway wood type club head exemplified as the golf club head 1 of the present embodiment has a relatively large radius of curvature of the face surface 3a and a relatively large loft angle. Therefore, since the golf club head 1 is a fairway wood type golf club head, the superiority of the golf club 1 is enhanced.

<Advantage>
Since the face surface 3a of the head body 2 of the golf club head 1 is provided with the marking line 10, the marking line 10 can be easily seen as a straight line when the player addresses. Therefore, the golf club head 1 can easily aim the direction of the hit ball toward the target when the player addresses.

[Second Embodiment]
<Golf club>
The golf club of the present embodiment includes a shaft 20 and the golf club head 1 described above. The shaft 20 is not particularly limited, and a conventionally known shaft 20 can be adopted. The golf club head 1 is as described above. Therefore, a detailed description of the golf club of the present embodiment will be omitted.

<Advantage>
Since the golf club of the present embodiment includes the golf club head 1, it is possible to easily aim the direction of the hit ball toward the target when the player addresses, as described above.

[Other Embodiments]
The embodiments do not limit the configuration of the present invention. Therefore, it is possible to omit, replace or add components of each part of the embodiment based on the description of the present specification and common general technical knowledge, and all of them are construed as belonging to the scope of the present invention. Should be.

For example, in the above embodiment, the case where the golf club head is a fairway wood type golf club has been described, but the golf club head is not particularly limited as long as it has a curved face surface. For example, the golf club head may be a utility type golf club or the like.

For example, in the above embodiment, the case where the golf club head is attached to the shaft has been described, but the golf club head may be in a state before being attached as long as it can be attached to the shaft.

The golf club head and the golf club according to the present invention can easily aim the direction of the hit ball toward the target when the player addresses. Therefore, these can be suitably used as various golf crag heads and golf clubs having excellent usability.

1 Golf club head 2 Head body 3 Face part 3a Face surface 4 Sole part 5 Crown part 6 Hosel part 10 Marking line 20 Shaft S Center axis G Center of gravity

Claims (8)

A golf club head with a head body that can be attached to the shaft.
The head body
With the sole part
It includes a curved face surface and has a face portion extending upward from the sole portion.
A golf club head having one or more marking lines whose face surface is curved so as to project upward and extends in the toe-heel direction. The golf club head according to claim 1, wherein the head width of the head body is 50 mm or more. The golf club head according to claim 1 or 2, wherein the loft angle is 18 ° or more and 30 ° or less. The golf club head according to claim 1, claim 2 or claim 3, wherein the radius of curvature of the face surface is 400 mm or more. The golf club head according to any one of claims 1 to 4, wherein the radius of curvature of the marking line is 200 mm or more and 600 mm or less. The golf club head according to any one of claims 1 to 5, wherein the plurality of marking lines are arranged at equal intervals from each other. The golf club head according to any one of claims 1 to 6, wherein the marking line is formed by laser processing. A golf club including a shaft and a golf club head having a head body that can be attached to the shaft.
The head body
With the sole part
It includes a curved face surface and has a face portion extending upward from the sole portion.
A golf club having one or more marking lines whose face surface is curved so as to project upward and extends in the toe-heel direction.

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