JP2014073158A - Golf club head - Google Patents

Abstract

[PROBLEMS] To improve the hitting sound.
A hollow golf club head having a crown portion, a sole portion, and a side portion, and a rib for adjusting sound hitting provided on an inner wall of the golf club head, the rib being provided on the rib, A damping member that suppresses vibration of the rib.
[Selection] Figure 2

Description

  The present invention relates to a golf club head, and more particularly to a technique for improving the hitting sound.

  In hollow golf club heads typified by driver heads, the volume of the head has been increasing year by year, and the crown and sole portions have become thinner and the area has also increased. For this reason, there is a tendency that the hitting sound at the time of hitting the golf ball tends to be low, and a golf club head that emits a higher hitting sound is desired from a golfer who prefers a high hitting sound. Therefore, for example, Patent Documents 1 and 2 disclose a structure in which a rib is provided on the sole portion to improve the hitting sound.

JP 2002-186691 A JP 2003-102877 A

  The ribs are effective for increasing the sound of hitting. However, there are cases where the rib itself vibrates and generates an abnormal sound when hitting, or the hitting sound resonates excessively.

  An object of the present invention is to improve the hitting sound.

  According to the present invention, in a hollow golf club head including a face portion, a crown portion, a sole portion, and a side portion, a sound adjustment rib provided on the inner wall of the golf club head; There is provided a golf club head provided with a vibration damping member provided on the rib and suppressing vibration of the rib.

  According to the present invention, the hitting sound can be improved.

1 is a perspective view of a golf club head according to an embodiment of the present invention. (A) is sectional drawing in alignment with line II of FIG. 1, (B) is a fractured view of a composite_body | complex, (C) is an exploded view of a composite_body | complex. (A) thru | or (C) is explanatory drawing of the composite_body | complex of another example, (D) is explanatory drawing which shows the example of a manufacturing method of the composite_body | complex of FIG.3 (C). (A) And (B) is explanatory drawing of the composite_body | complex of another example. (A) is sectional drawing of the golf club head of another example, (B) is a bottom view of the golf club head of FIG. 5 (A). The perspective view of the golf club head of another example. Sectional drawing which follows the line II-II of FIG. The perspective view of the golf club head of another example. The perspective view of the golf club head of another example. Sectional drawing which follows the line III-III of FIG.

<First Embodiment>
FIG. 1 is a perspective view of a golf club head 10 according to an embodiment of the present invention, and is a perspective view of a composite 20 provided therein, and FIG. 2 (A) is a cross section taken along a line II in FIG. FIG. 2B is a cutaway view of the composite (B), and FIG. 2C is an exploded view of the composite 20.

  The golf club head 10 has a hollow body, and its peripheral wall has a face portion 11 that forms a face surface (striking surface), a crown portion 12 that forms an upper portion of the golf club head 10, a sole portion 13, and a side surface. Part 14. The head volume is, for example, not less than 400 cc and not more than 460 cc.

  The side part 14 forms a side part of the golf club head 10 and includes a toe side part 14a, a heel side part 14b, and a back side part 14c. The golf club head 10 includes a hosel portion 15 to which a shaft is attached. In each figure, an arrow TH indicates a toe-heel direction, and an arrow FB indicates a face-back direction. In this embodiment, these directions are orthogonal to each other.

  The golf club head 10 is a golf club head for a driver, but the present invention is a wood type golf club head including a fairway wood other than a driver, a utility type (hybrid type) golf club head, and other hollow golf club heads. It is applicable to. The golf club head 10 can be made of a metal material. Examples of such a metal material include titanium-based metals (for example, 6Al-4V-Ti titanium alloy), stainless steel, and copper alloys such as beryllium copper. It is done.

  The golf club head 10 can be assembled by joining a plurality of parts. For example, a main body member that constitutes a peripheral portion of the crown portion 12, the sole portion 13, the side portion 14, and the face portion 11, and an opening is formed in a part corresponding to the face portion 11, and the main body member And a face member joined to the opening.

  The golf club head 10 includes a composite body 20 including a rib 21 and a vibration damping member 22. The rib 21 is a rib for adjusting the hitting sound provided on the inner wall of the golf club head 10. In the present embodiment, the rib 21 is provided on the sole portion 13, but may be provided on the crown portion 12 or the side portion 14. In the present embodiment, one rib 21 is provided, but a plurality of ribs may be provided.

  In the case of this embodiment, the rib 21 has a band shape and is provided on the sole portion 13 so as to cross the sole portion 13 in the toe-heel direction.

  In general, when the head volume is increased, it is necessary to reduce the thickness of the peripheral wall of the head and the area of each part is increased, so that the intrinsic value of the entire head is lowered. For this reason, the hitting sound at the time of hitting the golf ball tends to be low. In this embodiment, the sole part 13 is restrained by providing the rib 21, and the eigenvalue increases. As a result, the hitting sound can be increased.

  Particularly in the present embodiment, one end of the rib 21 is connected to the side portion 14a, and the other end of the rib 21 is connected to the heel side portion 14b. For this reason, the restraining force of the sole portion 13 can be further increased. The rib 21 may be connected to the crown portion 12 instead of the side portion 14, and may be further connected to both the side portion 14 and the crown portion 12.

  The rib 21 has a height hr and a width br. The height hr is a height from the upper surface of the sole portion 13. The relationship between the height hr and the width br preferably satisfies hr> br in terms of the restraining effect of the sole portion 13.

  In order to further increase the restraining force of the sole portion 13, the rib 21 preferably passes through the position of the antinode of the primary vibration mode of the sole portion 13. The position of the antinode of the primary vibration mode of the sole portion 13 can be obtained by performing modal analysis by a computer or eigenvalue analysis by FEM.

  The rib 21 may be integrally formed with the sole portion 13, or the rib 21 may be fixed to the sole portion 13 as a separate member. Examples of the fixing method include welding.

  By providing the rib 21, high sound hitting can be achieved as described above, but the rib 21 itself may vibrate when hitting to generate an abnormal sound, or the hitting sound may sound excessively. In particular, when the rib 21 is fixed to the sole portion 13 as a separate member by welding, the rib 21 is likely to vibrate.

  In the present embodiment, the rib 21 is provided with a damping member 22 that suppresses the vibration. The vibration of the rib 21 can be suppressed by the damping member 22, and as a result, the hitting sound can be improved.

  The damping member 22 is made of, for example, a resin material or a damping metal. The resin material may be either a synthetic resin material or a natural resin material, but is preferably a viscoelastic body. Examples of the viscoelastic body include NBR (acrylonitrile butadiene rubber) and IIR (butyl rubber). The tangent loss (tan δ) of −10 ° C. to −40 ° C. in the viscoelasticity measurement of the viscoelastic body is preferably 0.1 to 0.3 under a test condition of 0.05% strain and 10 Hz. Examples of the damping metal include flake graphite cast iron, magnesium alloy, sirenalloy (Fe—Cr—Al), Ni—Ti alloy, and Mn—Cu alloy.

  In the case of the present embodiment, the damping member 22 covers the upper surface and both side surfaces of the entire rib 21. As shown in FIG. 2C, the damping member 22 is formed as a cylindrical body having a U-shaped cross section that is open at the bottom, and can be mounted on the rib 21 while being fixed with an adhesive. The vibration damping member 22 may be an ultraviolet curable coating. In this case, after applying to the ribs 21, it may be solidified by ultraviolet irradiation.

  As shown in FIG. 2A, the composite 20 has a height h and a width b. The height h is a height from the upper surface of the sole portion 13. If the composite 20 is too small, the impact sound improving effect is reduced, and if it is too large, the weight is increased. Therefore, the width b of the composite 20 is preferably 1 mm or more and 5 mm or less, and the height h is preferably 1 mm or more and 7 mm or less.

Second Embodiment
In the said 1st Embodiment, although it was set as the structure which the damping member 22 covers the rib 21 over the whole, a part may be sufficient.

  The damping member 22 in FIG. 3A has a shortened length in the toe-heel direction. One such damping member 22 or a plurality of damping members 22 may be provided at intervals in the toe-heel direction.

  The vibration damping member 22 in FIG. 3B is configured to cover the side surface without covering the upper surface of the rib 21. In the example of the figure, it is assumed that the damping member 22 covers the entire side surface of the rib 21, but the length in the toe-heel direction may be shortened to cover a part of the side surface.

<Third Embodiment>
In the said 1st and 2nd embodiment, although it was set as the structure which the damping member 22 covers the rib 21, the structure embedded in the rib 21 may be sufficient.

  FIG. 3C shows an example in which the groove 21a is provided in the rib 21 and the damping member 22 is provided in the groove 21a. In the example of the figure, the groove 21a has a depth from the upper surface of the rib 21 to the upper surface of the sole portion 13, and is formed in the rib 21 over the entire region in the toe-heel direction. 22 is provided over the entire region of the groove 21a. However, the groove 21 a may be partially formed in the rib 21. In addition, in the example of FIG. 3C, the groove 21 (a) is open on the upper surface of the rib 21, but may be open on the side surface.

  As a method of mounting the damping member 22 on the groove 21a, a plate-like damping member 22 is fitted into the groove 21a and bonded. In addition, the damping member 22 may be injected into the groove 21a in a liquid state and then solidified. For example, the damping member 22 may be made of a resin material and melted by heat to be cooled and solidified as a liquid state, or dried and solidified as a liquid state with a solvent. Alternatively, the vibration damping member 22 may be made of an ultraviolet curable paint and solidified by ultraviolet irradiation.

  At that time, as shown in FIG. 3D, the liquid damping member 22a may be injected into the groove 21a by the syringe 100. Thereby, even if it is a case where the width | variety of the groove | channel 21a is narrow, the damping member 22 can be provided comparatively easily.

  Various shapes other than the example of FIG. 3D can be adopted as the shape of the groove 21a. For example, in the example of FIG. 4A, the depth of the groove 21 (a) is about half the height of the rib 21. In the example of FIG. 4B, the groove 21 (a) is provided only on the upper portion of the rib 21, and the upper side is wide and has a triangular section.

<Fourth embodiment>
In the said 1st thru | or 3rd embodiment, although the damping member 22 was provided only in the rib 21, you may provide the damping member 22 in another site | part. 5 (A) and 5 (B) show an example, and FIG. 5 (A) is a cross-sectional view of the golf club head 10 in the present embodiment, which is shown in FIG. 2 (A) of the first embodiment. FIG. FIG. 5B is a bottom view of the golf club head 10 in the present embodiment.

  In the case of the present embodiment, in addition to providing the rib 21 with the damping member 22, the sole portion 13 is also provided with the damping member 22 '. In the case of the present embodiment, the damping member 22 ′ is continuous with the damping member 22 integrally. The damping member 22 ′ is provided not on the entire sole portion 13 but on a part thereof.

  In the case of the present embodiment, the damping member 22 ′ is provided in the region S 2 out of the region S 1 on the face portion 11 side and the region S 2 on the back side of the sole portion 13 divided by the rib 21, and is provided in the region S 1. Absent. By not suppressing the vibration in the region S1, the size and sound of the hitting sound can be improved.

  In the region S2, the damping member 22 'is provided over substantially the entire region, but may be provided over the entire region or a part thereof. That is, the vibration damping member 22 'may be provided in at least a part of the region S2. In the region S2, by suppressing the vibration of the sole portion 13, the vibration area of the sole portion 13 can be restricted, and high sounding can be achieved.

<Fifth Embodiment>
In the first to fourth embodiments, the extending direction of the rib 21 is the toe-heel direction. However, the direction is not limited to this, and may be other directions, or may be a shape other than a straight line.

  6 and 7 illustrate the composite body 20 in which the ribs 21 are extended in the face-back direction. 6 and 7, the rib 21 crosses the sole portion 13 in the face-back direction, and one end thereof is connected to the face portion 11 and the other end thereof is connected to the back side portion 14c. ing. Thus, by extending the rib 21 in the face-back direction, it is possible to suppress the deflection of the sole portion 13 at the time of impact as a whole.

  In FIG. 8, the rib 21 has a shape other than a straight shape, and has a shape in which a plurality of ribs having different extending directions are combined. The figure illustrates a composite 20 having ribs 21a extending in the toe-heel direction and two ribs 21b extending obliquely in the face-back direction. The two ribs 21b are extended from the rib 21a to the back side.

  With such a configuration, the sole portion 13 is easily bent on the face portion 11 side but is difficult to be bent on the back side, and the hitting sound is easily increased. Note that one rib 21b extending obliquely in the face-back direction may be provided, or the rib 21b may extend straight instead of obliquely. Moreover, the rib 21 may be curved.

<Sixth Embodiment>
You may use the composite_body | complex 20 and a weight part together. As a result of the binding force of the sole portion 13 being increased by the ribs 21 of the composite body 20, the hitting sound may be reduced. By providing the weight portion, the hitting sound can be increased. 9 and 10 show an example.

  In the example of the figure, a T-shaped composite body 20 having a rib 21a extending in the toe-heel direction and a rib 21b extending in the face-back direction is illustrated. The weight part 30 is provided in the middle part of the rib 21b.

  In the example shown in the figure, the weight portion 30 includes a screw hole forming portion 31 formed integrally with the sole portion 13 and a weight member 32. The screw hole forming part 31 has a cylindrical shape and forms a screw hole opened downward. The weight member 32 has a screw portion that is attached to the screw hole of the screw hole forming portion 31, and is detachably screwed into the screw hole forming portion 31. By making the weight member 32 detachable, the weight members 32 having different weights can be selectively mounted.

  In addition, the structure of the weight part 32 is not restricted to this, For example, only the part integrally formed in the sole part 13 may be sufficient.

<Other embodiments>
As mentioned above, although the multiple types of embodiment of this invention was demonstrated, it cannot be overemphasized that each embodiment can be combined suitably.

Claims (10)

In a hollow golf club head having a face portion, a crown portion, a sole portion, and a side portion,
A rib for adjusting sound hitting provided on the inner wall of the golf club head;
A damping member provided on the rib and suppressing vibration of the rib;
Golf club head with   The golf club head according to claim 1, wherein the vibration damping member covers at least a part of the rib. The rib includes a groove;
The golf club head according to claim 1, wherein the damping member is provided in the groove.   The golf club head according to claim 1, wherein the rib is provided on the sole portion so as to cross the sole portion in a toe-heel direction.   The golf club head according to claim 4, wherein the rib passes through an antinode of the primary vibration mode of the sole portion.   5. The golf according to claim 4, wherein the damping member is provided only in at least a part of the region on the back side of the region on the face portion side and the region on the back side of the sole portion divided by the rib. Club head.   2. The golf club head according to claim 1, wherein the composite body including the rib and the vibration damping member has a width of 1 mm to 5 mm and a height of 1 mm to 7 mm.   The golf club head according to claim 1, wherein the vibration damping member is made of a viscoelastic body.   The golf club head according to claim 1, wherein the vibration damping member is bonded to the rib.   4. The golf club head according to claim 3, wherein the vibration damping member is injected into the groove in a liquid state and then solidified.

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