JP2005287529A - Golf club head - Google Patents

Abstract

To provide a golf club head capable of easily and accurately adjusting the weight of a head body.
A golf club head according to the present invention has a head body 1 having a hollow outer shell structure provided with a face portion 5 for hitting a ball. The protrusion part 10 provided with the part 10a was formed.
[Selection] Figure 1

Description

  The present invention relates to a golf club head.

  Conventionally, in a golf club head, a technique for adjusting the head weight is known. For example, in Patent Literature 1, a screw hole is formed in a rough adjustment weight nut for roughly setting the head weight and a bolt screwed into the nut in the sole portion of the head body, and fine adjustment to be screwed into the screw hole. A golf club head having a weight is disclosed. Then, the swing weight is adjusted by partially cutting the nut or preparing a plurality of nuts and fine adjustment weights having different weights and selecting the weight.

Further, Patent Document 2 discloses a golf club head that adjusts the weight of the head body by fixing the weight portion while being exposed to the sole portion and polishing the exposed surface.
Japanese Utility Model Sho 62-72670 JP 2001-204858 A

  The golf club head disclosed in Patent Document 1 described above is a technique for adjusting the weight of the entire head, and has a problem that it is difficult to adjust the position of the center of gravity (some adjustment is possible in the vertical direction). Further, although the weight of the entire head of the golf club head disclosed in Patent Document 2 can be adjusted, it is difficult to adjust the position of the center of gravity, and the outer shape may change depending on the amount of polishing, and the appearance may be impaired. There is.

  In other words, when manufacturing a golf club head, if it becomes heavier than the set weight, or if you want to readjust the golf club head after completing weight adjustment, the center of gravity position is not only in the vertical direction, but also in the horizontal direction and the front-rear direction However, when it is desired to make fine adjustments, it is difficult to easily perform such adjustments with high accuracy in the above-described prior art.

  The present invention has been made based on the above-described problems, and an object of the present invention is to provide a golf club head capable of easily and accurately adjusting the weight of the head main body.

  In order to achieve the above-described object, a golf club head according to the present invention has a hollow outer shell head body having a face portion for hitting a ball, and extends in a rib shape inside the head body. The protrusion part which provided the uneven | corrugated | grooving part to protrude was formed.

  In order to achieve the above-described object, a golf club head according to the present invention has a head body having a hollow outer shell structure having a face portion for hitting a ball, and a rib-like shape is formed inside the head body. And a protrusion having a through hole is formed.

  According to the configuration described above, a protrusion that extends in a rib shape is provided on the inner side of the head main body, and unevenness is formed in the protrusion or a hole is formed, thereby adjusting the weight and the position of the center of gravity. Adjustment can be easily performed. That is, the protrusions and holes at arbitrary positions of the protrusions extending into the head body can be easily cut, and the protrusions and holes at arbitrary positions can be taken into consideration while taking into account the weight balance and the position of the center of gravity. It is possible to easily perform delicate weight adjustment by cutting the portion.

  In addition, the above-described protruding portion can function as a weight concentration portion where the weight is concentrated with respect to the outer shell member constituting the head main body. For this reason, by appropriately setting the position where the projecting portion is provided, it is possible to obtain secondary effects such as improving the balance of swing and improving the resilience of the face portion. That is, even when adjustment of the weight balance is not necessary (when the concave and convex portions and the hole portions are not cut), a golf club head that exhibits the above-mentioned secondary effects can be obtained.

  According to the present invention, when the golf club head has become heavier than the set weight, when it is desired to readjust the golf club head after adjusting the weight, or when it is desired to finely adjust the position of the center of gravity, any extra weight is optional. By removing the weight of the position, it is possible to obtain a golf club head capable of adjusting the weight accurately and easily.

Hereinafter, embodiments of a golf club head according to the present invention will be described.
1 to 3 are views showing a golf club head according to a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view of the head main body, and FIG. 2 is an AA line of the head main body shown in FIG. FIG. 3 is a cross-sectional view taken along the face side of the head body shown in FIG.

  A head body 1 of a golf club head (hereinafter referred to as a head) according to the present embodiment includes a rear member 3 including a crown portion 3a, a back portion 3b, a sole portion 3c, a toe portion 3d, and a heel portion 3e, The front member (face portion) 5 is welded to or integrated with the rear member 3. An opening 5 a is formed in the face portion 5, and the face member 7 is fixed thereto by welding, press-fitting, bonding, or the like, so that the head body 1 is entirely composed of a plurality of outer shell members. It has a hollow outer shell structure.

  A shaft fastening hole 4 is formed in the crown portion 3a, and a shaft 8 made of metal or FRP is attached to the crown portion 3a toward the hollow portion.

  The head main body 1 of the present embodiment is integrally formed by casting using a metal material such as stainless steel, stainless steel alloy, titanium, titanium alloy, etc., except for the face member 7 among the outer shell members constituting the head main body 1. Molded. Of course, these outer shell members may be formed by individually forming arbitrary members and integrating them by welding or adhesion. The face member 7 is formed by punching a metal material such as a stainless alloy, titanium, titanium alloy or the like having a high specific strength.

  The crown portion 3a, the back portion 3b, and the sole portion 3c are provided with rib-like protruding portions 10 that extend in a direction substantially orthogonal to the face portion 5. By doing so, the protruding portion 10 is not deformed in the lateral direction (direction twisted with respect to the face) with respect to the protruding direction due to the impact of the hitting ball, energy transmission efficiency to the hitting ball is improved, and the repulsive force is reduced. improves. Further, in the case of the present embodiment, the protruding portion 10 is continuously formed integrally with these outer shell members from the crown portion 3a to the back portion 3b and the sole portion 3c, and from the back portion 3b side, the crown portion is respectively formed. A substantially intermediate region is formed toward 3a and the sole portion 3c. That is, the rigidity of the rear side of the head body 1 is improved to reduce energy loss at the time of hitting the ball, and the face side of the crown portion 3a and the sole portion 3c can be easily bent without forming a region in front of it. To improve the resilience at the time of impact.

  On the end portion side of the protruding portion 10, a continuous uneven portion 10a is formed so that the cutting operation can be easily performed. The concavo-convex portion 10a is formed so that the weight of the head can be adjusted by cutting the continuously formed convex portion at any position, and the thickness of the outer shell member (crown portion 3a) is set to T1. When the thickness T2 in the concave portion and the thickness in the convex portion are T3, they should be formed so that T1 ≦ T2 <T3. Further, by forming the intervals (pitch) between the convex portions at equal intervals, the mass productivity can be improved and the cutting position can be easily specified. In addition, as for the dimension of T3, about 4.0-15 mm is preferable. If it is less than 4.0 mm, the adjustment cutting area is small, and if it exceeds 15 mm, vibration sound (battering sound) at the time of hitting ball tends to occur. The difference between T3 and T2 is preferably 2 mm or more. This is because if it is less than 2 mm, it becomes difficult to perform cutting accurately.

  The protruding portion 10 formed with such a concavo-convex portion 10a exclusively adjusts the center-of-gravity position G of the head, and adjusts the center-of-gravity position G over a wide range with high accuracy by forming it in a long rib shape. It becomes possible. That is, the protruding portion 10 formed over the crown portion, the back portion, and the sole portion has a function of adjusting the gravity center position G in the vertical direction and the front-rear direction. The thickness of the rib of the protruding portion 10 is preferably thicker than T1, specifically 1.2 to 5.0 mm. If this is less than 1.2 mm, vibration sound (chattering noise) at the time of hitting ball tends to occur due to insufficient rigidity, and if it exceeds 5.0 mm, the weight is excessively concentrated on that portion, and the head has a poor weight balance. Because it becomes.

  Further, in the present embodiment, the protruding portion 20 having the similar concavo-convex portion 20a is formed to extend in a substantially intermediate region between the toe portion 3d and the heel portion 3e from the back portion 3c toward the front side. The protruding portion 20 can adjust the center of gravity G of the head exclusively like the protruding portion 10, and can be adjusted in a wide range with high accuracy by forming it in a long rib shape. Become. That is, the projecting portion 20 formed over the toe portion, the back portion, and the heel portion has a function of adjusting the gravity center position G in the left-right direction and the front-rear direction.

  The protruding portion 20 is integrally formed continuously with the outer shell member, and is formed up to a substantially intermediate region between the toe portion 3d and the heel portion 3e, respectively. The rigidity of the rear part 1 is improved to reduce the energy loss at the time of hitting, and the face side of the toe part 3d and the heel part 3e is easily bent to improve the repulsive force at the time of impact. Further, the thickness of the ribs of the concavo-convex portions 10a and 20a is made thinner than the thickness of the ribs of the concave portions, or the same thickness is good. This is because chatter noise is likely to occur when the convex portion is thickened, and cutting becomes difficult when the convex portion is thickened.

  The position at which the protrusions 10 and 20 are formed is not particularly limited. However, as shown in FIG. 3, it is easily formed as intended by forming it at a position passing through the geometric center P of the head. The center of gravity can be adjusted. In addition, since it is easy to feel a sense of weight at the geometric center of the head, blurring of hitting points is reduced.

  According to the golf club head as described above, the protrusions 10 and 20 having the concavo-convex portions are disposed in the head main body, so that the weight balance and the center of gravity can be easily adjusted when the head is formed. Become so. That is, when assembling the outer shell member by welding or the like, the convex portion at any position of the concave and convex portions formed on each of the protruding portions 10 and 20 is cut with high precision and optimum while considering the weight balance. It is possible to form a head with a proper weight balance.

  Specifically, the center of gravity position can be adjusted in the vertical direction and the front-rear direction by cutting a convex portion at an arbitrary position of the uneven portion of the protruding portion 10, and the arbitrary position of the uneven portion of the protruding portion 20 can be adjusted. By cutting the convex portion, the position of the center of gravity can be adjusted in the left-right direction and the front-rear direction, and as a result, the position of the center of gravity can be easily adjusted with high accuracy over 360 degrees. Further, since the portion to be cut is inside the head, the appearance of the head is not impaired, and since the portion is a convex portion (because it has a concave portion), the moment of inertia is not greatly reduced.

  And the above-mentioned protrusion parts 10 and 20 are provided with the function as a weight concentration part where weight concentrated with respect to the outer shell member of the peripheral part. That is, in addition to the function of adjusting the weight as described above, it also has a function of improving the balance of the swing regardless of the presence or absence of cutting. For example, the protruding portion 10 in the above-described configuration is formed so as to extend along the swing plane direction that is a direction orthogonal to the face portion, so that a feeling of weight can be obtained along the extending direction during the swing. It becomes easier to detect the surface direction and the hitting points are less likely to vary.

  In particular, by forming such a reinforcing portion near the position passing through the center of gravity G of the head (in the range of ± 10 mm), it is easy to cause the rotation with respect to the shaft axis to follow the inertial force of the head in the swing plane direction as it is. Therefore, with a stable swing, the face surface can be easily aligned at the time of impact, and the direction of the hit ball is stabilized. Further, by forming the reinforcing portion where the weight is concentrated from the crown portion 3a to the sole portion 3c, the balance between the top and bottom of the head (crown / sole) is improved, and it becomes easier to move forward with less blur.

Moreover, it is preferable that the protrusions 10 and 20 are designed to be substantially perpendicular to the face surface. By doing so, the protrusions 10 and 20 are not deformed in the lateral direction (twist direction) due to the impact of the hit ball, and the energy transmission efficiency to the hit ball is improved.
In the head body, a weight portion 25 for adjusting the weight may be provided as appropriate.

  4 and 5 are views showing a second embodiment of the present invention. FIG. 4 is a longitudinal sectional view of the head body, and FIG. 5 is a sectional view of the head body taken along line BB in FIG. It is.

  In this embodiment, holes 10b and 20b are formed in place of the concavo-convex portions formed on the protrusions 10 and 20 in the first embodiment described above. Even if the hole is formed in this way, it becomes easy to perform cutting and the like, and the weight balance can be adjusted with high accuracy. The accuracy is particularly good when the hole is cut using a drill or a leuter. In addition, about the hole part formed, what differs in size may be formed and you may combine with the above-mentioned uneven | corrugated | grooved part. Moreover, it is also possible to attach a heavy object using a hole, and it becomes possible to attach reliably by welding, screwing, etc.

  6 and 7 are views showing a third embodiment of the present invention. FIG. 6 is a longitudinal sectional view of the head body, and FIG. 7 is a sectional view of the head body taken along the line CC in FIG. It is.

  In the above-described embodiment, the protruding portion is formed at one place along the crown portion, the back portion, and the sole portion, and at one location along the toe portion, the back portion, and the heel portion. It is possible to arrange in any position. For example, you may form the protrusion part 30 which has the uneven | corrugated | grooved part 30a further in the both sides of the said protrusion part 10 of the crown part 3a. That is, since such a protruding portion is also a portion where the weight is concentrated with respect to the peripheral portion, it is possible to arrange in advance at various positions so as to improve the weight balance and swing balance. .

  Although the embodiments of the present invention have been described above, the present invention forms protrusions inside the hollow head body, and the protrusions are formed with uneven portions and holes that facilitate cutting and polishing. The overall shape, material, formation method, and the like of the head body can be variously modified without being limited to a special configuration. In the head body, the position, length, thickness, height, and the like of forming the protruding portion, the shape (height, pitch, etc.) of the concavo-convex portion formed thereon, and the hole portion formed therein The position, number, size, etc. can be modified as appropriate.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment of the golf club head which concerns on this invention, and is a longitudinal cross-sectional view of a head main body. Sectional drawing along the AA line of the head main body shown in FIG. FIG. 2 is a cross-sectional view of the face side of the head body shown in FIG. 1. It is a figure which shows the 2nd Embodiment of this invention, and is a longitudinal cross-sectional view of a head main body. Sectional drawing along the BB line of the head main body shown in FIG. It is a figure which shows the 3rd Embodiment of this invention, and is a longitudinal cross-sectional view of a head main body. Sectional drawing along CC line of the head main body shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Head main body 3a Crown part 3b Back part 3c Sole part 5 Face part 10,20,30 Projection part 10a, 20a, 30a Irregularity part 10b, 20b Hole part

Claims (3)

A golf club head having a head body having a hollow outer shell structure having a face portion for hitting a ball,
A golf club head, wherein a protrusion having an uneven portion extending in a rib shape is formed inside the head body. A golf club head having a head body having a hollow outer shell structure having a face portion for hitting a ball,
A golf club head characterized in that a protruding portion having a through hole is formed on the inside of the head main body and extending in a rib shape.   3. The golf club head according to claim 1, wherein the protruding portion is formed to extend in a direction substantially orthogonal to the face portion on the back portion side of the head main body.

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