JP3588062B2 - Golf putter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a golf putter.
[0002]
[Prior art]
In the golf putter which is one of the most frequently used clubs among golf clubs, various techniques for stabilizing the hit ball have been proposed.
[0003]
A golf putter is mainly composed of a head having a face surface as a hitting surface and a shaft attached to the head, and a member called a neck is often used for mounting the head. Various techniques for stabilizing the hit ball, such as the form and material, have been conventionally developed for each of the head, the shaft, and the neck.
[0004]
For example, by using a hard material for the head, an attempt has been made to increase the impact force at the time of hitting and obtain a hit ball having a desired strength with a smaller takeback.
[0005]
[Problems to be solved by the invention]
By the way, it is known that the structure and shape of the head are important as well as the material of the head and the shaft as factors that determine the characteristics of the hit ball by the golf putter. In addition, the development of a golf putter that is easy to hit with a sweet spot on the head visually is desired.
[0006]
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a golf putter in which the sweet spot of the head is easily visually recognized and the hit ball has high stability.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a golf putter comprising a head having a face surface formed thereon and a shaft mounted on the head via a neck, wherein a part of the outline of the head is a sphere. The head is provided with a plurality of spheres arranged side by side on the center of gravity trajectory of the head at the time of swing, and the neck is formed of the head of the plurality of spheres. A base end portion is embedded in a sphere behind the face surface, and is inclined along a lie angle. The main axis of the shaft is substantially parallel to the face surface of the head, and the sweet of the head It is characterized by passing through a spot.
In this golf putter, since a part of the outline of the head is formed so as to form a part of a sphere, it is easy to visually recognize the sweet spot of the head. In addition, since a part of the outline of the head forms a part of the sphere, the moment of inertia around the axis passing through the center of gravity is relatively large, and the tolerance for the deviation of the hitting point from the sweet spot is high.
A plurality of spheres are arranged side by side on the center of gravity trajectory of the head during the swing.
As a result, the momentum on the center of gravity trajectory at the time of swing increases, and the impact force at the sweet spot improves. Therefore, it is possible to obtain a hit ball having a desired strength with a small takeback.
In addition, since the neck has a base end embedded in the rear sphere with respect to the face face of the head of the plurality of spheres and is inclined along the lie angle, the neck line is the center of gravity trajectory. It matches the above, making it easier to recognize the sweet spot on the head. In addition, since the base end portion is embedded in the rear sphere of the plurality of spheres , even when the hit point deviates from the sweet spot, the twisting force is unlikely to act on the shaft.
Further, since the main axis of the shaft is substantially parallel to the face surface of the head and passes through the sweet spot of the head, the sweet spot of the head can be more easily recognized.
Here, the sweet spot is defined as a point descending from the center of gravity of the head perpendicularly to the face surface and its surrounding area, or an intersection of the ideal head's center of gravity trajectory and the face surface at the time of swing and its surrounding area.
[0008]
In this case, the plurality of spheres may have different center heights from the sole of the head along the center of gravity trajectory of the head.
[0009]
The head may be provided with a plurality of spheres arranged in parallel to the face surface of the head.
As a result, the moment of inertia around the vertical axis passing through the center of gravity is increased, and the tolerance for the deviation of the striking point from the sweet spot in the left-right direction is increased.
[0010]
Moreover, it is good for the sole of the said head to be provided with the recessed part which forms a part of outline of the at least 1 spherical body among these spherical bodies .
Accordingly, the substantial area of the sole is reduced while having the advantage of improving the impact force described above by the plurality of spheres. Therefore, the frictional resistance between the head and the ground surface during the swing is reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a golf putter according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a head 11 of a golf putter 10 of the present embodiment, FIG. 2 is a front view of the head 11 shown in the arrow A of FIG. 1, and FIG. 3 is a plan view of the head 11 shown in the arrow B of FIG. 4 is a side view of the head 11 shown by arrow C in FIG. 1, and FIG. 5 is a perspective view showing the sole 12 of the head 11.
[0012]
The golf putter 10 of the present embodiment is formed so that the overall shape of the head 11 forms a part of a sphere. That is, as shown in FIGS. 3 and 4, a part of the outline of the head 11 forms an arc 15 centered on a predetermined point on the face surface 13 (reference numeral P1 shown in FIGS. 3 and 4). The overall shape of the head 11 is determined as a part of a sphere drawn from the arc 15. Further, the center P1 of the sphere is located at the center of the head 11 in the length direction (left and right direction in FIG. 4), and the center of gravity of the head 11 is accordingly located at the center of the head 11 in the length direction. ing. As a result, the entire head 11 is formed substantially symmetrically with respect to the length direction of the head 11 around an axis passing through the center of gravity and perpendicular to the face surface 13. The radius of the sphere is, for example, 54 mm.
[0013]
The head 11 is composed of a base 20 having the above-mentioned arc 15 as an outline and a plurality of spheres 21, 22, 23, 24 provided on the base 20. The base 20 is formed in a substantially L shape, and has a face surface 13 on one surface and a sole surface 12a on the other surface.
[0014]
The plurality of spheres 21 to 24 include two spheres arranged in a direction orthogonal to the face surface 13 (first sphere 21 and second sphere 22) and two spheres arranged in parallel to the face surface 13. (Third sphere 23, fourth sphere 24). The plurality of spheres 21 to 24 are located on the back side of the face surface 13, and some of them are embedded in the base 20. For example, the radius of the first sphere 21 is 18 mm, the radius of the second sphere 22 is 12 mm, and the radii of the third and fourth spheres 23 and 24 are both 13 mm.
[0015]
In the present embodiment, the center of the first sphere 21 substantially coincides with the center of gravity of the entire head 11. The second sphere 22 is arranged behind the first sphere 21 and adjacent to the first sphere 21, and the center of the second sphere 22 is on the trajectory drawn by the center of the first sphere 21 during the swing. Is located. That is, as shown in FIG. 2, the first sphere 21 and the second sphere 22 are arranged side by side on the center of gravity trajectory of the head 11 during the swing (= on the center trajectory of the first sphere 21). The center height Hb of the second sphere 22 from the sole 12 is slightly higher than the center height Ha of the first sphere 21 from. The center-of-gravity trajectory of the head 11 at the time of swing is drawn in an arc shape with a turning radius (reference numeral Ra shown in FIG. 2) including the length of the user's arm and the length of the shaft 30 around the fulcrum of the swing. Is.
[0016]
Further, as shown in FIG. 3, the third sphere 23 and the fourth sphere 24 are arranged separately on both sides in the length direction of the head 11 with the first sphere 21 interposed therebetween. Accordingly, the first sphere 21, the third sphere 23, and the fourth sphere 24 are arranged substantially in parallel with the face surface 13 of the head 11. The distance between the centers of the first sphere 21 and the third sphere 23 and the distance between the centers of the first sphere 21 and the fourth sphere 24 are the same. Further, the third sphere 23 and the fourth sphere 24 are formed in the same shape.
[0017]
The head 11 is provided with a neck 31 (hosel, socket) for mounting the shaft 30. In the present embodiment, the neck 31 has a structure in which a cylindrical member is bent and welded, and the main axis of the shaft 30 to be mounted is substantially parallel to the face surface 13 of the head 11 and passes through the sweet spot of the head 11. Is formed. Further, the base end portion 31a of the neck 31 is embedded in the second sphere 22 so as to be positioned on the center of gravity trajectory of the head 11 during the swing described above. Further, as shown in FIG. 4, the neck 31 is inclined along a predetermined lie angle (reference sign θ <b> 1 shown in FIG. 4, for example, θ <b> 1 = 19 °) and curved around the sweet spot of the head 11. It has been.
[0018]
Further, as shown in FIG. 4, slopes 12b and 12c are formed at both ends in the left-right direction of the sole 12 so as to be inclined at a predetermined angle (for example, 12.8 °) with respect to the central sole surface 12a. ing. In addition, a slope 12d formed at a predetermined angle (for example, 48 °) with respect to the central sole surface 12a is also formed at the rear end of the sole 12 where the second sphere 22 is disposed. Further, as shown in FIG. 5, the sole 12 is provided with a recess 12 e so as to form a part of the first sphere 21. In addition, the position of the top part of the 1st spherical body 21 formed of the recessed part 12e substantially corresponds with the sole surface 12a.
[0019]
Next, the effect | action of the golf putter 10 of this embodiment is demonstrated.
In the golf putter 10 of this embodiment, since the entire shape of the head 11 is formed so as to form a part of a sphere, it is easy to visually recognize the sweet spot of the head 11. That is, since the entire head 11 is symmetrically formed in the length direction (left-right direction) of the head 11 with the center of gravity of the head 11 as a boundary, by visually grasping the center of the head 11 in the length direction, The sweet spot on the face surface 13 can be easily recognized.
[0020]
Further, since the base 31 is positioned on the center of gravity trajectory of the head 11 at the time of swing and is inclined along the lie angle, the neck 31 is viewed from the user at the time of swing. The line coincides with the center of gravity trajectory. Further, the main axis of the shaft is substantially parallel to the face surface 13 of the head 11 and passes through the sweet spot of the head 11. For these reasons, the golf putter 10 can more easily recognize the sweet spot of the head 11.
[0021]
In addition, the sweet spot on the face surface 13 of the head 11 is a point (reference numeral P2 shown in FIG. 2) that is lowered from the center of gravity of the head 11 perpendicularly to the face surface 13, or the center of gravity trajectory of the head 11 and the face surface during a swing. 13 is an intersection of the two, and they are almost at the same position.
[0022]
Further, in the golf putter 10 of the present embodiment, the first sphere 21 and the second sphere 22 are provided side by side on the center of gravity track of the head 11 at the time of swing, so that the momentum on the center of gravity track at the time of swing is increased. Increase the impact power at the sweet spot. Therefore, it is possible to obtain a hit ball having a desired strength with a small takeback. That is, the deviation of directionality in takeback is suppressed and the stability of the hit ball is improved.
[0023]
Further, since the entire shape of the head 11 forms a part of a sphere, the moment of inertia around the axis passing through the center of gravity is relatively large, and the tolerance for the deviation of the hitting point from the sweet spot is high. In addition, since the third sphere 23 and the fourth sphere 24 are arranged side by side with the first sphere 21 located at the center of gravity in parallel with the face surface 13 of the head 11, the vertical axis around the center of gravity is provided. The inertia moment is large, and the tolerance for the lateral displacement of the hitting point from the sweet spot is high. Moreover, even when the hit point deviates from the sweet spot, it is difficult for the twisting force to act on the shaft.
[0024]
Further, in the golf putter 10 of the present embodiment, since the recess 12e is provided in the sole 12 of the head 11 so as to form a part of the first sphere 21, the substantial area of the sole surface 12a is increased. small. In addition, slopes 12b, 12c, and 12d are formed at both the left and right end portions and the rear end portion of the sole 12 at a predetermined angle with respect to the central sole surface 12a. The area is getting smaller. Therefore, the frictional resistance between the head 11 and the ground surface during the swing is reduced, and the directionality of the swing is stabilized.
[0025]
As described above, according to the golf putter 10 of the present embodiment, it is easy to visually recognize the sweet spot of the head 11, and it is possible to hit a ball with high stability.
[0026]
The various shapes and combinations of the constituent members shown in the above-described embodiments are merely examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.
[0027]
Moreover, in the said embodiment, the head 11 is shape | molded by cutting after processing, such as casting, for example. As the material of the head 11, any of aluminum, alumina, carbon, ceramic, stainless steel, brass, soft iron, iron, wood, etc. can be applied.
[0028]
【The invention's effect】
As described above, according to the golf putter of the present invention, it is easy to visually recognize the sweet spot of the head, and the tolerance for the deviation of the hit point from the sweet spot is high. Moreover, even when the hit point deviates from the sweet spot, it is difficult for the twisting force to act on the shaft. Therefore, it is possible to hit a ball with high stability.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a head according to an embodiment of a golf putter according to the present invention.
FIG. 2 is a front view of the head shown in an arrow A in FIG.
FIG. 3 is a plan view of the head indicated by an arrow B in FIG.
4 is a side view of the head shown in an arrow C in FIG.
FIG. 5 is a perspective view showing a sole of a head.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Golf putter 11 Head 12 Sole 12a Recess 13 Face surface 21, 22, 23, 24 Sphere 30 Shaft 31 Neck 31a Base end

Claims (4)

A golf putter comprising a head formed with a face surface, and a shaft attached to the head via a neck,
A part of the outline of the head is formed to form a part of a sphere,
In the head, a plurality of spheres are arranged side by side on the center of gravity trajectory of the head at the time of swing,
The neck is provided with a base end embedded in a rear sphere with respect to the face surface of the head of the plurality of spheres, and inclined along a lie angle.
A golf putter characterized in that a main axis of the shaft is substantially parallel to a face surface of the head and passes through a sweet spot of the head. 2. The golf putter according to claim 1, wherein the plurality of spheres have different center heights from the sole of the head along a center of gravity trajectory of the head. The golf putter according to claim 1, wherein a plurality of spheres are arranged in parallel on the head in parallel with the face surface of the head. 4. The recess according to claim 1 , wherein the sole of the head is provided with a recess that forms a part of an outline of at least one of the plurality of spheres. 5. Golf putter.

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