JP7104568B2 - Golf club head - Google Patents

Description

The present invention relates to a golf club head.

Conventionally, a method of adjusting the weight distribution of the head body by attaching a weight adjusting member to the head body of the golf club head has been known.

For example, there is a method in which a screw receiving structure is provided inside the head body, and a screw or the like for weight adjustment is attached to the screw receiving structure from the outside of the head body to adjust the weight distribution of the golf club head.

Another method is to fix a magnet on the outside of the head body and attract a weight adjusting member to the magnet by magnetic force to adjust the weight distribution of the golf club head.

Patent No. 05381693 Patent No. 05286139 Jikkai Sho 61-048760 Jitsufuku 03-014727 US Patent Publication 2017/0361185

An object of the present invention is to provide a golf club head having a mounting structure of a weight adjusting member different from the conventional one.

The golf club head is a golf club head having a hollow head body, and a first member, which is a magnet, is fixed to the inside of the head body, and the head body is sandwiched between the golf club head and the first member. It is a requirement that the second member is fixed to the outside of the head body by the magnetic force of the first member, and the second member is removable.

According to the disclosed technique, it is possible to provide a golf club head having a mounting structure of a weight adjusting member different from the conventional one.

It is a figure which illustrates the golf club head 1 which concerns on 1st Embodiment. It is a figure which illustrates the mounting structure of the weight adjustment member which concerns on 1st Embodiment. It is a figure which illustrates the mounting position of the weight adjustment member which concerns on the modification of 1st Embodiment. It is a figure which illustrates the mounting structure of the weight adjustment member which concerns on 2nd Embodiment. It is a figure which illustrates the mounting structure of the weight adjustment member which concerns on 3rd Embodiment. It is a figure which illustrates the mounting structure of the weight adjustment member which concerns on 4th Embodiment. It is a partially enlarged sectional view which illustrates the mounting structure of the weight adjustment member which concerns on 5th Embodiment. It is a figure which illustrates the mounting structure of the weight adjustment member which concerns on 6th Embodiment. It is a figure which illustrates the mounting structure of the weight adjustment member which concerns on the modification of the 6th Embodiment.

Hereinafter, embodiments will be described with reference to the drawings. In each drawing, the same components may be designated by the same reference numerals, and duplicate description may be omitted.

<First Embodiment>
1A and 1B are views illustrating the golf club head 1 according to the first embodiment, FIG. 1A is a front view, FIG. 1B is a bottom view, and FIG. 1C is a left side view. , FIG. 1 (d) is a right side view.

In FIG. 1, the view seen from the face surface 11f side is a front view, and the golf club head 1 is grounded on the horizontal plane H (corresponding to the ground) according to the reference lie angle θ and the reference loft angle (not shown). The case is illustrated. Note that J indicates the central axis of the hole of the hosel portion 20. Further, the arrow d ₁ indicates the toe-heel direction (horizontal direction), the arrow d ₂ indicates the top-sole direction (vertical direction), and the arrow d ₃ indicates the face-back direction (front-back direction).

The golf club head 1 shown in FIG. 1 is a wood-type golf club head, for example, a driver, but may be a utility or a fairway wood. The golf club head 1 can be formed by using, for example, titanium, a titanium alloy, stainless steel, aluminum, an aluminum alloy, an iron-based metal, magnesium, a magnesium alloy, a fiber reinforced resin, or the like. Further, the golf club head 1 may be assembled by joining a plurality of parts. Hereinafter, the golf club head 1 will be described in detail.

The golf club head 1 is a hollow structure having a hollow head main body 10 and a hosel portion 20 connected to the head main body 10.

The head body 10 has a face portion 11, a crown portion 12, a sole portion 13, and a side portion 14. The face portion 11 is a portion provided with a face surface 11f which is a striking surface. The face portion 11 has a predetermined thickness, and the face surface 11f forms the outer surface of the face portion 11. The crown portion 12 is a portion forming the upper portion of the golf club head 1. The sole portion 13 is a portion forming the bottom portion of the golf club head 1. The side portion 14 is a portion that connects the crown portion 12 and the sole portion 13. The hosel portion 20 is a portion connected to the shaft.

The golf club head 1 is provided with a mounting structure for a weight adjusting member shown below on any portion other than the face portion 11.

2A and 2B are views illustrating the mounting structure of the weight adjusting member according to the first embodiment, FIG. 2A is a bottom view, FIG. 2B is a bottom view, and FIG. 2B is AA of FIG. 2A. It is a partially enlarged sectional view along the line.

With reference to FIG. 2, in the first embodiment, the first member 30 and the second member 40 are provided on the back side of the sole portion 13 of the head body 10.

The first member 30 is a magnet, and as shown in FIG. 2B, is fixed in a recess 10c formed on the inner surface 10a side of the head body 10. The first member 30 may be fixed to the head body 10 by, for example, an adhesive, press-fitting, caulking, welding, or the like, or may be fixed to the head body 10 by other methods. The planar shape of the first member 30 is, for example, a rectangle, but it can be an appropriate shape such as a circle or an ellipse.

The second member 40 is attracted to the outer surface 10b of the head body 10 facing the first member 30 with the head body 10 interposed therebetween in a detachable state by the magnetic force of the first member 30. The planar shape of the second member 40 is, for example, a rectangle, but it can be an appropriate shape such as a circle or an ellipse.

The second member 40 is a weight adjusting member that adjusts the weight of the golf club head 1. The weight of the second member 40 is, for example, 2 g or more and 20 g or less. The second member 40 can be prepared with a plurality of types of weights. The second member 40 may also be used as a name plate for enhancing the decorativeness of the head.

The size of the outer surface 10b of the head body 10 when viewed from the normal direction may be larger or smaller for the second member 40 than for the first member 30, but the second member 40 is larger. By doing so, the adjustment range of the weight distribution can be easily increased.

Since the head body 10 is interposed between the first member 30 and the second member 40, the second member 40 does not come into contact with the first member 30.

As the first member 30, for example, a samarium-cobalt magnet, a neodymium magnet, or the like can be used. As the second member 40, a magnet or a magnetic material can be used. When the second member 40 is a magnet, for example, a samarium-cobalt magnet, a neodymium magnet, or the like can be used. When the second member 40 is a magnetic material, for example, iron, nickel, cobalt or the like can be used.

Although the material of the golf club head 1 is illustrated above, at least the region of the head body 10 sandwiched between the first member 30 and the second member 40 is formed of a non-magnetic material. The entire head body 10 may be made of a non-magnetic material. Examples of the non-magnetic material include aluminum, titanium, fiber reinforced resin (for example, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), etc.), polycarbonate and the like.

In the example of FIG. 2, the first member 30 and the second member 40 are arranged on the back side of the sole portion 13 of the head main body 10, but the first member 30 and the second member 40 are the face portion 11 in the head main body 10. It can be placed in any position that does not touch. However, in the example of FIG. 2B, the second member 40 projects outward from the outer surface 10b of the head body 10, and the sole portion 13 and the ground come into contact with each other during a golf swing, so that the second member 40 is the head body. It is preferable that the first member 30 and the second member 40 are not arranged on the sole portion 13 because they are likely to come off from 10.

By the way, in a conventional golf club head, for example, a screw receiving structure is provided inside the head body, and a weight adjusting screw or the like that can be replaced from the outside of the head body is attached to the screw receiving structure to distribute the weight of the golf club head. Was adjusting. However, in the conventional golf club head, the weight is concentrated on the screw receiving structure, and the width of the head weight adjustment is not sufficient.

On the other hand, in the golf club head 1, the first member 30 which is a magnet is fixed inside the head main body 10, and the first member is outside the head main body 10 facing the first member 30 with the head main body 10 interposed therebetween. The second member 40, which is attracted by the magnetic force of 30, can be detachably arranged.

Therefore, in the golf club head 1, it is not necessary to provide a structure in which the weight is concentrated like the screw receiving structure in the conventional golf club head inside the head main body 10. Further, the first member 30 can be made lighter than the screw receiving structure. As a result, the weight corresponding to the weight of the screw receiving structure can be freely distributed to other places, and the weight distribution of the golf club head can be easily adjusted.

Further, in the golf club head 1, a magnet is fixed inside the head body 10. As a result, compared to the structure in which the magnet is fixed to the outside of the head body, the impact when the first member 30 comes into direct contact with the ground when duffing occurs during the golf swing, and the second member 40 are used. It has the effect of preventing the first member 30 from coming off the head body due to the impact when it comes into contact with the ground. That is, in the golf club head 1, since the first member 30 and the second member 40 are not in contact with each other and the first member 30 is not exposed to the outside of the head body 10, such an effect can be obtained.

Further, in the structure in which the magnet is fixed to the outside of the head body, it is necessary to provide a recess having a size that allows both the first member 30 and the second member 40 on the outside of the head body, so that the size of the weight adjusting member is large. It is necessary to make the recessed part larger than the other. Therefore, there is a concern that the stress when the golf ball is impacted by the golf club head is concentrated on the recessed portion. When a magnet is provided inside the head body, the dent can be made smaller than the size of the weight adjusting member outside the head body, preventing stress concentration on the head body and preventing a decrease in strength. can.

Further, as compared with the structure in which the head body itself is made of a magnetic material, the member can be attached even if the head body is not made of a magnetic material.

In the example of FIG. 2, since the second member 40, which is a weight adjusting member, is arranged on the back side of the sole portion 13 of the head body 10, the loft angle at the time of impact is increased by deepening the center of gravity of the head. It becomes larger and the launch angle of the hit ball becomes larger.

<Modified example of the first embodiment>
In the modified example of the first embodiment, an example in which the second member 40, which is a weight adjusting member, is arranged at a position different from that of the first embodiment is shown. In the modified example of the first embodiment, the description of the same component as that of the above-described embodiment may be omitted.

FIG. 3 is a diagram illustrating a mounting position of a weight adjusting member according to a modified example of the first embodiment, FIG. 3 (a) is a bottom view, and FIGS. 3 (b) and 3 (c) are views. It is a left side view.

As shown in FIG. 3A, the second member 40 may be arranged at two locations on the back side of the sole portion 13 of the head body 10. In this case, since the moment of inertia is improved by applying the head body 10 in the left-right direction (toe-heel direction), it becomes difficult for the hit ball to bend. The second member 40 may be provided at three or more locations on the head body 10.

As shown in FIG. 3B, the second member 40 may be arranged from the back side of the sole portion 13 of the head main body 10 to the vicinity of the sole portion 13 excluding the grounded region of the head main body 10. In this case, since the second member 40 does not exist in the grounded region of the head body 10, it can be made less susceptible to duffing.

As shown in FIG. 3C, the second member 40 may be arranged from the back side of the sole portion 13 of the head body 10 to the back side of the crown portion 12. In this case, the depth of the center of gravity can be changed without significantly changing the height of the center of gravity.

<Second Embodiment>
In the second embodiment, an example is shown in which the second member does not protrude from the outer surface of the head body to the outside. In the second embodiment, the description of the same components as those in the above-described embodiment may be omitted.

4A and 4B are views illustrating the mounting structure of the weight adjusting member according to the second embodiment, FIG. 4A is a bottom view, FIG. 4B is a bottom view, and FIG. 4B is BB of FIG. 4A. It is a partially enlarged sectional view along the line.

With reference to FIG. 4, in the second embodiment, the first member 30 and the second member 45 are provided on the sole portion 13 of the head main body 10.

The first member 30 is fixed in the recess 10d formed on the inner surface 10a side of the head body 10. The first member 30 may be fixed to the head body 10 by, for example, an adhesive, press-fitting, caulking, welding, or the like, or may be fixed to the head body 10 by other methods. The planar shape of the first member 30 is, for example, an ellipse, but it can be an appropriate shape such as a circle or a rectangle.

The second member 45 is attracted to the recess 10e formed on the outer surface 10b side of the head body 10 facing the first member 30 with the head body 10 sandwiched between them in a detachable state by the magnetic force of the first member 30. There is. The planar shape of the second member 45 is, for example, an ellipse, but it can be an appropriate shape such as a circle or a rectangle.

The second member 45 is a weight adjusting member that adjusts the weight of the golf club head 1. The weight of the second member 45 is, for example, 2 g or more and 20 g or less. The second member 45 can prepare a plurality of types of weights. The second member 45 may also be used as a name plate for enhancing the decorativeness of the head.

The size of the outer surface 10b of the head body 10 when viewed from the normal direction may be larger or smaller for the second member 45 than for the first member 30, but the second member 45 is larger. By doing so, the adjustment range of the weight distribution can be easily increased.

Since the head body 10 is interposed between the first member 30 and the second member 45, the second member 45 does not come into contact with the first member 30.

As the second member 45, a magnet or a magnetic material can be used. When the second member 45 is a magnet, for example, a samarium-cobalt magnet, a neodymium magnet, or the like can be used. When the second member 45 is a magnetic material, for example, iron, nickel, cobalt or the like can be used.

In the example of FIG. 4, the second member 45 is first so that the outer surface of the second member 45 is flush with the outer surface 10b of the head body 10 or is recessed from the outer surface 10b of the head body 10. It is adsorbed on the member 30. Therefore, the first member 30 and the second member 45 can be arranged on the sole portion 13.

In order to facilitate attachment / detachment of the second member 45 into the recess 10e, it is preferable to provide an appropriate gap between the outer wall surface of the second member 45 and the inner wall surface of the recess 10e. Further, in order to facilitate attachment / detachment of the second member 45 into the recess 10e, an annular notch 45x may be provided on the recess 10e side of the second member 45.

As described above, in the second embodiment, when the second member 45 is attracted to the first member 30, the outer surface of the second member 45 is flush with the outer surface 10b of the head body 10. The position is recessed from the outer surface 10b of the head body 10.

As a result, even if it is arranged on the sole portion 13, it is not affected by duffing. Therefore, the first member 30 and the second member 45 include the sole portion 13 as long as they are in a position where they do not come into contact with the face portion 11 in the head body 10. It can be placed at any position.

Further, by arranging the second member 45 on the sole portion 13, the center of gravity of the head body 10 is lowered. As a result, the launch angle of the hit ball can be increased and the backspin amount can be reduced.

It is also possible to apply the mounting structure of the weight adjusting member according to the second embodiment to the positions shown in the first embodiment and the modified example.

<Third embodiment>
In the third embodiment, an example in which the second member is arranged in the resin portion partially provided on the head body is shown. In the third embodiment, the description of the same components as those in the above-described embodiment may be omitted.

5A and 5B are views illustrating the mounting structure of the weight adjusting member according to the third embodiment, FIG. 5A is a bottom view, FIG. 5B is a bottom view, and FIG. 5B is CC of FIG. 5A. It is a partially enlarged sectional view along the line.

With reference to FIG. 5, in the third embodiment, the first member 30 and the second member 40 are provided on the resin portion 10r partially provided on the back side of the sole portion 13 of the head body 10. .. The resin portion 10r is, for example, carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), polycarbonate or the like.

When a member is attached to the plate-shaped resin portion by screwing as in the conventional case, there are problems such as damage, cracking, and strength reduction of the reinforcing fiber due to perforation in the resin portion. In the present embodiment, since the first member 30 which is a magnet is fixed to the resin portion 10r by the adhesive 50, the resin portion 10r is not damaged by perforation or the like, and the strength of the resin portion 10r is prevented from being lowered. The weight can be adjusted.

It is also possible to apply the mounting structure of the weight adjusting member according to the third embodiment to the positions shown in the first embodiment and the modified example.

<Fourth Embodiment>
In the fourth embodiment, an example in which the first member is larger than the second member is shown. In the fourth embodiment, the description of the same components as those in the above-described embodiment may be omitted.

6A and 6B are views illustrating the mounting structure of the weight adjusting member according to the fourth embodiment, FIG. 6A is a bottom view, and FIG. 6B is a DD of FIG. 6A. It is a partially enlarged sectional view along the line. Further, FIGS. 6 (c) and 6 (d) are modified examples of the mounting position of the weight adjusting member.

With reference to FIG. 6, in the fourth embodiment, the first member 30 and the second member 40 are provided on the back side of the sole portion 13 of the head main body 10. However, when viewed from the normal direction of the outer surface 10b of the head body 10, the size of the first member 30 in the toe-heel direction is larger than the size of the second member 40 in the toe-heel direction.

As a result, the second member 40 can be attached to and detached from a plurality of positions as shown in FIGS. 6 (b) to 6 (d). That is, the heel side of the area where the first member 30 is arranged as shown in FIG. 6 (b), the center side of the area where the first member 30 is arranged as shown in FIG. 6 (c), and FIG. 6 (d). ), The second member 40 can be attached to and detached from the toe side of the area where the first member 30 is arranged. As a result, the weight distribution in the toe-heel direction can be easily adjusted.

When viewed from the normal direction of the outer surface 10b of the head body 10, the size of the first member 30 in the toe-heel direction is larger than the size of the second member 40 in the toe-heel direction. Is an example. For example, the size of the first member 30 in the face-back direction may be larger than the size of the second member 40 in the face-back direction when viewed from the normal direction of the outer surface 10b of the head body 10. Further, the first member 30 may be larger than the second member 40 in both the toe-heel direction and the face-back direction.

It is also possible to apply the mounting structure of the weight adjusting member according to the fourth embodiment to the positions shown in the first embodiment and the modified examples.

Further, also in the case of the mounting structure of the weight adjusting member shown in FIGS. 4 and 5, the size of the first member 30 in the toe-heel direction and the face-back direction is set to the second size as in the case of FIG. The size of the member 40 or the second member 45 may be larger than the size in the toe-heel direction or the face-back direction.

<Fifth Embodiment>
In the fifth embodiment, an example is shown in which the second member is larger than the first member and the second member has a plurality of thicknesses. In the fifth embodiment, the description of the same component as that of the above-described embodiment may be omitted.

FIG. 7 is a partially enlarged cross-sectional view illustrating the mounting structure of the weight adjusting member according to the fifth embodiment. The attachment structure of the weight adjusting member according to the fifth embodiment can be provided on the sole portion 13 as in FIG. 4, for example, but may be provided at the position shown in FIGS. 2 and 3.

In the structure of FIG. 7, by reducing the weight of the first member 30, the weights of the second members 45, 46, and 47 can be increased accordingly. That is, since the weight of the entire head body 10 is constant in design, if the weight occupied by the first member 30 is reduced, the weights of 45, 46, and 47 can be increased instead.

As a result, the weight adjustment range of the second member is large, and the degree of freedom in design can be increased. For example, like the second member 46 shown in FIG. 7 (b), the size can be increased with the same thickness as the second member 45 shown in FIG. 7 (a). Further, as in the second member 47 shown in FIG. 7 (c), the thickness can be reduced to the same size as the second member 47 shown in FIG. 7 (b).

Also in the case of the mounting structure of the weight adjusting member shown in FIG. 2, the second member 40 having a different size and thickness can be used.

<Sixth Embodiment>
In the sixth embodiment, an example in which the rotation prevention structure is provided on the circular second member is shown. In the sixth embodiment, the description of the same components as those in the above-described embodiment may be omitted.

8A and 8B are views illustrating the mounting structure of the weight adjusting member according to the sixth embodiment, FIG. 8A is a bottom view, FIG. 8B is a bottom view, and FIG. 8B is an EE of FIG. 8A. It is a partially enlarged sectional view along the line.

With reference to FIG. 8, in the sixth embodiment, the first member 30 and the second member 45 are provided on the sole portion 13 of the head main body 10. The shape of the second member 45 is circular when viewed from the normal direction of the outer surface 10b of the head body 10. Further, a conical convex portion 45t is provided at a position offset from the center on the surface of the second member 45 facing the concave portion 10e. The convex portion 45t is fitted with the concave portion 10f, which is a conical bottomed hole provided on the bottom surface of the concave portion 10e, to realize a rotation prevention structure.

In this way, the convex portion 45t is fitted with the concave portion 10f to prevent the second member 45 from rotating, thereby preventing the second member 45 from falling off due to the force in the rotational direction during use of the golf club head 1. can.

The rotation prevention structure of the second member is not limited to the form shown in FIG. 8, and may be, for example, the form shown in FIG.

9A and 9B are views illustrating the mounting structure of the weight adjusting member according to the modified example of the sixth embodiment, FIG. 9A is a bottom view, and FIG. 9B is FIG. 9A. It is a partially enlarged sectional view along the FF line.

With reference to FIG. 9, a linear convex portion 45w is provided on the surface of the second member 45 facing the concave portion 10e, for example, so as to pass through the center. The convex portion 45w is fitted with the concave portion 10g, which is a linear groove provided on the bottom surface of the concave portion 10e, to realize a rotation prevention structure.

As described above, as the rotation prevention structure, a linear convex portion 45w and a concave portion 10g may be provided. Also in this case, the convex portion 45w is fitted with the concave portion 10g to prevent the second member 45 from rotating, thereby preventing the second member 45 from falling off due to the force in the rotational direction during use of the golf club head 1. can.

Instead of the linear convex portion 45w and the concave portion 10g, a cross-shaped convex portion and a concave portion that fit each other and a convex portion and a concave portion having other shapes that fit each other may be provided.

Although the preferred embodiment has been described in detail above, it is not limited to the above-described embodiment, and various modifications and substitutions are made to the above-described embodiment without departing from the scope of the claims. Can be added.

1 Golf club head 10 Head body 10a Inner surface 10b Outer surface 10c, 10d, 10e, 10f, 10g Recess 10r Resin part 11 Face part 11f Face surface 12 Crown part 13 Sole part 14 Side part 20 Hosel part 30 First member 40, 45, 46, 47 Second member 45t, 45w Convex 45x Notch 50 Adhesive

Claims (7)

A golf club head having a hollow head body,
A first member, which is a magnet, is fixed to the inside of the head body.
A golf club head in which a second member is fixed to the outside of the head body facing the first member with the head body sandwiched by the magnetic force of the first member, and the second member is detachable. The golf club head according to claim 1, wherein the region of the head body sandwiched between the first member and the second member is made of a non-magnetic substance. The golf club head according to claim 1 or 2, wherein the second member does not come into contact with the first member. The head body includes a face portion and has a face portion.
The golf club head according to any one of claims 1 to 3, wherein the first member and the second member do not come into contact with the face portion. Claim that the second member is attracted to the first member so that the outer surface of the second member is flush with the outer surface of the head body or is recessed from the outer surface of the head body. The golf club head according to any one of 1 to 4. The golf club head according to any one of claims 1 to 5, which is a wood type. The golf club head according to any one of claims 1 to 6, wherein the size of the second member when viewed from the normal direction of the outer surface of the head body is larger than that of the first member.

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