JPH1015127A - Putter head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a feeling of hitting a ball and easily obtain a delicate feeling about a distance by setting the wall thickness of at least a part of the face of a putter head within a specific range for the reduction of the wall thickness. SOLUTION: A recessed part 5 is formed on the back 6 of a head at a center except for a toe 3 and a heel 4, regarding the head body 2 of a metallic head for putter as a golf club. Also, the intermediate wall thickness T of the central part of a face 1 is made small within the range of 0.5mm to 2.0mm. In other words, the recessed part 5 is formed on the head back 6, so as to envelope upper and lower, and right and left bulged walls, and a sole 7 is formed to have sufficient thickness and projected backward. As a result, a feeling about a stroke becomes soft (i.e., soft feeling) and a feeling about a putting distance can be easily adjusted. At the same time, the strength and rigidity of the periphery of the face 1 are suitably maintained and the moment of inertia becomes large, thereby ensuring a good feeling at the time of a stroke.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a metal head for a putter as a golf club.

[0002]

BACKGROUND OF THE INVENTION Among golf clubs, putters are required to function differently from other woods and irons. In other words, with respect to other clubs in which the flight distance and the directionality are emphasized (other than the putter), in the case of the putter, the "easiness of giving a delicate sense of distance" is very important together with the directionality.

[0003] The most common mistake on the green that causes the player to experience great shock and upset is that they spend more than three strokes on putting, including so-called "three-patts". It can be said that the biggest cause of this mistake is that the sense of distance of the first put does not match.

In order to match the sense of distance in putting,
A very delicate feeling is required, but the “soft feel” is indispensable for creating this feeling.

[0005]

2. Description of the Related Art Recently, a putter using a relatively soft aluminum-based metal as a material for a putter head has been developed and has attracted attention. Not. One of the causes is that the aluminum head has a very small specific gravity, so it is necessary to increase the head volume in order to secure the head weight, so there are many so-called mallet type (Kamaboko type), It is considered that the thickness of the hitting surface was large (see FIGS. 7 and 8).

Also, a putter has been proposed in which a soft resin is buried in the face surface (ball hitting portion) of a metal putter to obtain a soft feel of hitting. In addition, there is a problem that it takes time and cost, the resin portion is easily scratched, the durability is poor, and there are problems such as deformation due to temperature change.

[0007] Further, in recent years, the number of players who change the ball to be used from the conventional thread-wound structure to the two-piece structure has been increasing, but the two-piece ball has a better shot feeling than the wound ball. However, many players were hard and did not feel well, making it more difficult for players to adjust the sense of distance by putting.

[0008] An object of the present invention is to solve such a conventional problem and to provide a putter which improves shot feeling and easily gives a delicate sense of distance.

[0009]

Therefore, in the putter head according to the present invention, the wall thickness of at least a part of the face surface is set to 0.5 mm to 2.0 mm.

Further, a concave portion is formed at the center portion on the back side of the head, and the wall thickness at the center portion of the face surface is set to 0.5 mm to 2.0 mm.
mm.

[0011] Further, the whole is of a block type, and a slit portion is cut out 0.5 mm to 2.0 mm rearward from the face surface so that the wall thickness of at least a part of the face surface is 0.5 mm.
Formed to be ~ 2.0 mm.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on the illustrated embodiments.

FIG. 1 is a rear (rear) view of a metal putter head showing one embodiment of the present invention, and FIG. 2 or FIG.
Is a sectional view taken along the line A-A. In FIGS. 1, 2 and 3, the wall thickness T at the center of the face surface 1 is set to 0.5 mm to 2.0 mm.
mm so that it is thinner (sufficiently than before).

Reference numeral 2 denotes a head main body, which is provided with a concave recess 5 at the center except the toe 3 and the heel 4 (on the side of the head back surface 6).
The wall thickness T at the center of the face surface 1 is formed thin. That is, on the head back surface 6 side, the concave recessed portion 5 is formed so as to be surrounded by upper, lower, left and right raised wall portions. In particular, the sole 7 has a sufficient thickness and projects rearward.

FIG. 2 shows a case where the wall thickness T is about 2 mm, and FIG. 3 shows a case where the wall thickness T is about 0.5 mm. In the shapes of FIGS. 1 to 3 described above, the material is stainless steel, mild steel, titanium,
Other metals.

Next, FIGS. 4 and 5 show another embodiment of the present invention, in which the whole putter head is a block type such as a kamaboko type, and is 0.5 mm to 2.0 mm behind the face surface 1. The slit portion 8 which opens vertically is cut out, and the wall thickness T of at least the central portion of the face surface 1 is set to 0.5 mm to
Form to 2.0mm.

That is, the heel 4 to which the shaft 9 is connected
A slit portion 8 having a sufficient width dimension in the left-right direction and an interval dimension of 1.0 mm to 7.0 mm is cut out except for the side and the toe 3 side (at the tip).

Particularly, in the case of a light metal such as aluminum or aluminum alloy, the weight of the whole putter head is secured while
There is an advantage that the wall thickness T of the face surface 1 can be manufactured to be sufficiently thin, and the external appearance has a shape that does not cause any strange feeling.

It is preferable that the slit 8 is opened only on one of the upper and lower sides (not shown). Further, in FIG. 4, the thin wall of the face surface 1 is connected only to the toe 3 and the heel 4 with the rear portion, but a rib-shaped connection may be added partially in the middle between the left and right ( Not shown).

In any of the above-described embodiments (FIGS. 1 to 5), if the wall thickness T is less than 0.5 mm, the strength is insufficient and the ball may be damaged by an impact at the time of hitting a ball. Yes, conversely,
If it exceeds 2.0 mm, the soft feel at impact is impaired, and
It is difficult to give a delicate sense of distance.

By the way, in the case of a club other than a putter, the impact at the time of hitting the ball is large, so that the thickness of the hitting ball cannot be reduced so much in terms of strength. For example, even a metal such as stainless steel or soft iron used in an iron head is used. A thickness of 2.5 mm or more is required. Fortunately, in the case of putters, the head speed at the time of hitting is much slower than these clubs, so reduce the wall thickness with the same material as the conventional head material such as stainless steel, soft iron, aluminum etc. Was able to withstand sufficient strength.

[0022]

Next, Table 1 shows examples of the present invention together with conventional examples.

[0023]

[Table 1]

Here, the conventional example 1 has the shape shown in FIG. 6 and the thickness T is 3.0 mm, and the conventional example 2 has the kamaboko type shown in FIG. 7 and FIG. It is as large as 50.0mm. Conventional example 3 has the shape shown in FIG.
It is 5.0mm.

Further, in Examples 1 to 4, the basic shapes are all the same as in FIG. 1 and the material and the wall thickness T of the face surface are changed. Embodiment 2 and Embodiment 4 correspond to FIG. 3, and FIG. Further, the fifth embodiment has the shape shown in FIGS.

In Table 1 above, the "evaluation of shot feeling" means the average value of scores obtained by selecting ten golfers with a handicap of 5 to 25 as testers and evaluating the softness of shot feeling on a scale of 1 to 5. (5 points indicate the best). On the other hand, for the sense of distance, ten testers were asked to perform putting once from each of the five points 15m to 20m from the cup on the green without practice, and the average value of the remaining distance was 5 points for less than 1m, 4 points for 1.0m to 1.5m, 3 points for every 0.5m, 2 points, 1 point, 3m
In the case where the above remains, the average value of all the scores of 10 testers when the score is 0 is shown.

The following can be seen from Table 1 above. Conventional example 1
Is the thinnest type T as a conventional product,
In contrast, in the first embodiment, the thickness T
By reducing the thickness, both the shot feeling evaluation and the distance feeling evaluation are remarkably improved.

Further, it is understood that each evaluation is further improved by further reducing the thickness T to 0.5 mm as in the second embodiment.

Similar results are obtained in comparison between Conventional Example 3 and Examples 3 and 4, and the reduced wall thickness T of the face surface softens the feel at the time of hitting and makes it easier to match the sense of distance. ing.

In the fifth embodiment, as is apparent from comparison with the second conventional example, the thickness T is reduced by the slit portion 8,
It can be seen that the shot feeling and the sense of distance are improved.

It should be noted that the thickness T of any metal is
When the thickness was less than 0.5 mm, the strength was insufficient and the ball was damaged by the impact at the time of hitting the ball.

Further, in all of Examples 1 to 5,
It can be easily manufactured by a conventional manufacturing method. That is, Examples 1 and 2 were manufactured by casting, Examples 3 and 4 were forged, and Example 5 was manufactured by cutting from an ingot, but could be manufactured without any change from the conventional method, and the cost was not much different from the conventional method.

[0033]

The present invention has the following remarkable effects with the above-described structure.

(According to claim 1, 2, or 3), the shot feeling is softened (soft feeling),
The feeling of distance of putting is easy to match. Further, the manufacture is as easy as before, and the cost does not increase (almost).

According to the second aspect, the strength and rigidity of the peripheral edge of the face surface are appropriately maintained, the moment of inertia is large, and the feel when hitting the ball is good.

According to the third aspect, the weight of the conventional Kamaboko-shaped putter head can be maintained, and there is no strange feeling in appearance.

[Brief description of the drawings]

FIG. 1 is a rear view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view of another embodiment replacing FIG. 2;

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a rear view showing a conventional example.

FIG. 7 is a front view showing a conventional example.

8 is a sectional view taken along the line DD of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Face surface 5 Concave concave part 6 Head back surface 8 Slit part T (wall) thickness

Claims (3)

[Claims] 1. A putter head, wherein a wall thickness T of at least a part of the face surface 1 is set to 0.5 mm to 2.0 mm. 2. A recess 5 is formed at the center of the head back surface 6 so that the wall thickness T at the center of the face 1 is 0.5 mm to
A putter head characterized by setting it to 2.0mm. 3. A block type as a whole, wherein a slit portion 8 is notched behind the face surface 1 by 0.5 mm to 2.0 mm so that a wall thickness T of at least a part of the face surface 1 is reduced.
A putter head formed to be 0.5 mm to 2.0 mm.