JPH11104276A - Golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to set the centroid of a head at the rear side of the axial line of a shaft, to facilitate the hitting on the central axial line of the shaft, to increase a carry and to improve directivity by providing the clubface surface of a head with a planar heel intersecting perpendicularly with the entire height of the clubface surface. SOLUTION: The driver head 1' of a golf club has the shaft 2, the clubface 3, the heel 4', a tow 5 and a sole 6. The heel 4' is formed to the planar shape so as to intersect perpendicularly with the surface 3 of the clubface 3 over the entire surface of the clubface 3. The distances (t), t(from the center line (c) to the left end and right end of the sole 6 are set equal and the club is so formed that the central axial line (a) of the shaft 2 intersects with the line where the central line (c) intersects orthogonally with the sole 3 surface. At the time of hitting the ball, a golfer attempts to hit the ball in the central part of the clubface 3 in the position of the line where the central line (c) intersects orthogonally with the sole 3 surface, by which the increasing of the carry and the improvement of directivity are made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a golf club.

[0002]

2. Description of the Related Art As shown in FIGS. 7 to 9, in a conventional golf club driver's head (1), a shaft (2) has a heel (bent behind a face (3) which is a hitting portion). (4) All over the outside of.
However, in this case, the center axis (a) of the shaft and the hitting point on the face (3), which is the hitting surface, are largely separated. Regardless of the ball game, such as baseball, tennis, badminton, table tennis, etc., when hitting at the center of those hitting tools (the base of the hitting part for baseball bats, or the line extending the center of the gripping hand for rackets) It gives a good hit, and the hand feel is comfortable. Therefore, it is designed and manufactured so as to obtain this feeling well. In the conventional driver's head (1) used in golf clubs, the center of gravity of the head (1) is separated from the center axis (a) of the shaft toward the toe [tip of the head] (5). There are many things that are present. And this head (1)
It has been said that the farther the center of gravity of the ball is from the center axis (a) of the shaft, the greater the flight distance in hitting.

However, the fact that the center of gravity of the head (1) is farther away from the center axis (a) of the shaft toward the toe (5) [there is a distance of the center of gravity] necessarily necessarily increases the flight distance of the ball. It has been found that it does not contribute to the ball, but rather an incorrect flight of the hit ball due to the twist of the head (1) at that time. In other words, such a conventional driver attempts to increase the ball's flight distance when the center of gravity of the head (1) is located closer to the toe (5) than the center axis (a) of the shaft. It is necessary to act to twist, and in this case, turning back the hand at the time of impact is an important operation. If this operation is poor, the ball will not fly and bend to the left and right. Here, a golf club in which the center line of the shaft is aligned with the perpendicular passing through the center of the club head (Japanese Patent Laid-Open No.
No.-49130), a golf club in which the center line of the shaft is aligned with the center of gravity of the club head (Japanese Utility Model Application Laid-Open No. 62-4836).
No. 8), a golf club in which the center line of the shaft is aligned with the center hit point of the club head (Japanese Utility Model Laid-Open No. 2-143968).
Although the proposals have been made, all of them have in common that they are not sufficiently completed and practically used as actual tools. The difficulty of hitting a ball with a driver in this manner is that there was a problem with the overall structure of the head.

[0004]

SUMMARY OF THE INVENTION The present invention provides a flat heel that intersects at right angles over the entire height of the face of the head, thereby bringing the center of gravity of the head closer to the rear of the axis of the shaft. An object of the present invention is to provide a golf club which can easily hit a ball on a central axis of a shaft, thereby giving a great hitting force to the ball, which increases a flight distance and a direction, and which is easy to hit.

[0005]

SUMMARY OF THE INVENTION A golf club characterized in that a flat heel that intersects at right angles is provided over the height of the face of the head, and the center axis of the shaft is moved from the flat heel to the center of the shaft. The golf club according to any one of the preceding claims, wherein the center line of the face is arranged on a line perpendicular to the sole within a specified distance.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. 1 and 2 show a driver's head (1 ') in a golf club according to the present invention. The shaft (2), face (3), heel (4'), and toe
(5) shows each part of the sole (6). It is a face (3)
A planar heel (4 ') intersecting at right angles is provided over the entire height of the surface. Here, when attaching the shaft (2), as shown in Fig. 2, the vertical center line of the face (3)
Set (c). The distances (t) and (t ') from the left end and the right end of the sole (6) to the center line (c) are equidistant. Line (c ') whose center line (c) is orthogonal to the sole (3) plane
[See FIG. 3] The shaft (2) is mounted so that the center axis (a) of the shaft (2) intersects. The distance (b) between the center axis (a) and the heel (4 ') is 16 mm according to the official golf rules.
And set so as to satisfy the regulation. FIG. 3 is FIG.
It is a view of the sole (6) side from the back side of the shaft (2).
Indicates that the center line (a) of the sole (6) and the center line (c) of the face (3) are on a line (c ') orthogonal to the sole (6).

Here, the preferred position of the ball (B) for hitting the ball is
In FIG. 3, the center line (c) and the line orthogonal to it (c ')
At the center of the face (3) at the position FIG. 4 is a rear view of FIG. 1, and it is clear that a wide planar heel (4 ') is formed with FIG. Θ indicates the loft angle. FIG. 5 shows a cross section taken along line VV ′ of FIG. FIG. 6 is a top view of the head (1 '), and it is clear that the heel (4') intersects the face (3) in a right angle with an intersection angle α of approximately 90 degrees. In comparison with the conventional head of FIG. 7, in the conventional head (1) of FIG. 7, the heel (4) retreats at a wider angle [obtuse] than the face (3), so that the heel (4) protrudes. ) And the shaft (2) is found to be in contact with the outside of the heel (4).

Here, the head of the golf club of the present invention
In (1 '), the center axis (a) of the shaft (2) is
(6) and the center line (c) of the face (3) is set on the orthogonal line (c ') in the sole (6), so that the shaft
(2) points to the center of the sole (6), so that the ball (B) can always be hit with the core of the shaft (2), and the force of the hit ball can be efficiently transmitted to the ball. As a result, a flying ball is born, and the directionality can be accurately obtained. Also, by forming a planar heel (4) that intersects the face (3) at right angles over the entire height of the face, the center of gravity of the head (1 ') is moved from the toe (5) to the shaft (5). 2), or to the right thereof (as shown in FIG. 4), whereby the head (1 ') is easy to swing through, that is, easy to hit. Because both the toe (5) and the heel (4 ') are close to the central axis (a), they are less liable to shake from side to side even if damaged, making it easier to take a straight trajectory. As described above, the central axis (a) of the shaft is provided within 16 mm from the heel of the current official competition regulations.
The shaft (2) should be installed in (b). Furthermore, the heel (4 ') of the head (1') of the present invention has a planar shape, so that the heel protruding backward in the conventional club head is eliminated, and the heel which is a miss shot often seen by beginners. Hitting, so-called healing, is also eliminated. The configuration of the driver's head (1 ') described above is similarly applied to other wood clubs and iron club heads.

[0009]

The head (1 ') of the golf club of the present invention
By setting the center axis (a) of the shaft (2) on the line (c ') where the center line (c) of the sole (6) and the face (3) are orthogonal to the sole (6), The ball (B) can be caught and hit by the core of the shaft (2), and in addition, a flat heel (4 ') intersects the face (3) at right angles to the entire height of the face (3). Moves the center of gravity of the head (1 ') from the toe (5) toward the rear of the shaft (2),
By bringing both the toe (5) and the heel (4 ') closer to the center axis (a), the power of the hit ball can be transmitted to the ball (B) in a stable state, thereby providing accurate direction. And a great flight distance can be obtained. And a golf club having good swing-through, that is, having a head (1 ′) that is easy to hit can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a golf club head according to the present invention.

FIG. 2 is a front view of the golf club head of the present invention.

FIG. 3 is a diagram showing a bottom surface of FIG. 2;

FIG. 4 is a diagram showing a rear surface of FIG. 2;

FIG. 5 is a sectional view taken along line V-V 'of FIG. 2;

FIG. 6 is a diagram showing the upper surface of FIG. 2;

FIG. 7 is a diagram showing an upper surface of a head of a conventional golf club.

FIG. 8 is a perspective view of a conventional golf club head.

FIG. 9 is a sectional view taken along line IX-IX ′ of FIG. 8;

[Explanation of symbols]

 (1), (1 ') Head (2) Shaft (3) Face (4), (4') Heel (5) Toe (6) Sole (B) Ball (a) Center axis (b) Spacing (c) Center line (c ') orthogonal line (t), (t') distance α intersection angle loft angle

Claims (2)

[Claims] 1. A golf club having a planar heel that intersects at right angles over the height of the face of the head. 2. The golf club according to claim 1, wherein a center axis of the shaft is arranged within a predetermined distance from the planar heel, and a center line of the face is arranged on a line perpendicular to the sole.