JPH01256981A - Golf club head - Google Patents

Abstract

PURPOSE:To realize the increase of a range able to hit a ball by specifying ratio of face center reference length to sole maximum width and forming a projection figure, excepting a neck part in the front as viewed from a face surface side, to almost agree with a face surface. CONSTITUTION:Ratio of face center reference length L to sole maximum width Ws is set to 3.0 or less. A tangent 6, placed in parallel with an axial line 3A of a shaft axis 3 and coming into contact with a toe side, is roughly contained in a plane including a face surface 2. That is, even the toe side serves as the hitting area. A head maximum height part in the past almost agrees with the extreme top part of the face surface 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conventional golf club head having a shape called a wood club.

[Conventional technology]

The shape of the club head, known as a traditional wood club, is
As shown in Figures 18 and 19, it has an elegant shape that pursues beauty, but we believe that there is no rational reason for such a shape except for some strength constraints. It is being Furthermore, since persimmon has traditionally been used as a material for wood heads, increasing the shape of the head increases the weight and makes it difficult to swing, so there are restrictions on the size. Wood heads with unique and elegant shapes have been cultivated within this limited size.

Recently, there has been an increase in wood heads made of new materials called metal heads and carbon heads, but these also follow the size and shape of conventional Versimmon heads. Although some lightweight carbon heads were formed into relatively large heads, they did not significantly exceed the size of traditional wood heads, and the shape was similar to Versimmon heads.

[Problem to be solved]

With a conventionally sized club head, many amateur golfers, even if they intend to hit the ball at the ace center, have variations in their swings, so they catch the ball over a wide range of the face and rarely hit the ball just right, especially beginners.
As shown in Figure 9, the ball was often caught on the toe side of the club face. - 9a lining up to practice fireworks
At training ranges, balls that hit the toe side would fly out toward the people practicing in front, which was dangerous.

If you are new to golf, how can you increase the probability of hitting the ball into the center of the face of a wood club with a traditional size and shape? ! It was thought that the only way to enjoy golf was to learn and master it.

Furthermore, even if an amateur golfer with a certain degree of economics is planning to hit the ball with the center of the club face, the probability of hitting the ball is low, and even if he or she wants to enjoy golf, it is difficult to master the use of a wood club. As described above, conventional club heads lack consideration for amateur golfers who wish to enjoy golf.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a golf club head that allows even amateur golfers to easily catch the ball within a certain range of the club face, and allows the golfer to fly the ball in the target direction without just hitting the ball, thereby enjoying golf. purpose.

[Means to solve the problem]

In order to achieve the above object, the club head of the present invention has a ratio of face center reference length to sole maximum width of 3.
0 or less, and the face surface is configured so that the projected view excluding the neck portion at the front viewed from the face side substantially coincides with the face surface.

[Effect]

With the head of this invention, even if the ball is hit on the toe side, it will not fly forward, but will fly in the target direction.

If the size of the projected view excluding the front neck seen from the face side is the same, the area of the face will be larger than that of a conventional head, allowing even amateur golfers to enjoy golf, and the size of the face will be the same. This makes the shaft feel psychologically shorter, making it easier to hit.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the ratio between the face center reference length and the maximum sole width W3 in FIG. It is designed to be approximately included in a plane including the face surface 2 (including a normal gently curved surface as a face surface). In other words, the toe side is also a hitting area.

The shape of the conventional head shown by the dotted line in FIG. 2 is such that the maximum height portion of the conventional head substantially coincides with the top of the face surface 2.

In addition, in FIG. 1, the method of measuring the face i width w of the face surface 2 of the head 1, the face center reference length L, the maximum head height H, and the maximum sole width W8 and the maximum head width as shown in FIG. As shown in FIGS. 4 and 5, the head 1 is placed on the surface plate 10, the shaft shaft 3 is supported by the polishing round bar 11, and the shaft angle is gradually increased from the position where the shaft angle θ is 45°. Raise the polishing rod 11 in the direction of increasing θ. At this time, the projected plane of the club viewed from the position where the shaft axis 3 is always parallel to the normal line 12 of the surface plate 1o when viewed from the toe side of the head l is called the side surface (Fig. 4), and the surface plate 10 The surface that includes the normal 12 of
The plane perpendicular to the front and side faces is called the plane (Fig. 5).
Fig. 3).

Focusing on the head 1 from the front, if the sole is a part of the cylinder 13 as shown in Fig. 6, or if the toe side tip of the sole and the heel side tip of the sole are R5 or less as shown in Fig. 7, it is symmetrical. If so, the polishing rod 11 is moved up and down until the toe-side tip of the sole and the heel-side tip of the sole are at the same position. If the sole is approximately symmetrical when viewed from the front, set it in the same way. These are shown in FIGS. 8-10. For the golf club thus set, H, W, L, D, and WS shown in FIGS. 1 and 2 are measured. If the head 1 does not have the sole shape as described above, the first
As shown in Figures 1 to 16, if the toe curve 14, some of the curves 15, and the sole curve 16 are not connected by an arc within R5, the intersection point 172 of the curve 14.16, the intersection 18 of the curve 15.16. determine h as the tips of the toe side and heel side of the sole, respectively. Sole maximum width W,
As shown in FIG. 17, in the case of a head 1 in which the sole is stepped or has a curved surface indicated by a broken line, the curve along the back side curve shape C, the face side curve shape along the curve shape d, and the head l is the length between the intersections a and b with the horizontal plane where it touches the ground.

Measure face 2 using a stamp pad (75x55fi)
Apply ink to the face surface 2, draw the axis of the shaft axis 3 on the front, draw an arc of R200 touching the color boundary,
The part surrounded by these lines was defined as the face surface 2. Then, a line passing through the sole grounding point and orthogonal to the constant S10 is defined as the y-axis, and a tangent line 19 passing through the intersection of this y-axis and the uppermost ridge line on the front of the face surface 2 and parallel to the surface plate 10, and a line between this tangent line 19 and the shaft. Surface plate 1 passes through the intersection with axis 3A passing through the axis of shaft 3
The length from the line 20 perpendicular to 0 to the tip of the toe of the head 1 was defined as the face center reference length (see FIG. 1). In addition, the surface plate 1 of the club in the above-mentioned setting state
The distance MH from 0 to the maximum height of the head l was defined as the maximum head height.

Furthermore, in the golf club head shown in FIGS. 1 and 2, the face area is 2750 to 3900.
n Agriculture 2. The distance between the head and body is 2,700 or less.

The ratio of the face center reference length to the sole maximum width W is preferably 3.0 or less.

〔effect〕

As explained above, according to the present invention, the toe side surface of the conventional head also becomes the face surface, and the range in which the ball can be hinted is substantially increased, allowing even beginners to enjoy golf. In addition, increasing the area of the face makes the shaft feel shorter psychologically, making it easier to hit the ball.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a preferred embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a plan view, and Figs. 4 to 17 show the face center reference length and the maximum width of the face and sole. FIG. 18 is a plan view showing a conventional example, and FIG. 19 is a front view of the conventional example. ■ ...heh, deh. 2...Face surface. 3...Shaft axis. 5...Neck part. L festival center standard length. W, ... Sole maximum width

Claims (1)

[Claims] 1. The ratio of the face center reference length to the sole maximum width is 3.
．． 0 or less, and a golf club head characterized in that a projected view of the face viewed from the face side, excluding the neck portion, substantially coincides with the face.