JPH09299521A - Golf club head - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To reduce the weight of a face member, prevent a decrease in strength, and make a head large. In a golf club head in which at least a face member (1) is made of a metal material, a large number of ridges (4) are inclined on one side of a head portion (2) of a head toward a sole portion (3) and extend at intervals on the back surface of the face member (1). In the same way, tilt from the top part 2 of the head to the sole part 3 in the other direction,
A number of ridges 5 spaced apart and extending across the ridge 4.
The face member 1 is centered on the face center C, and the recess 6 is divided by the central region A in the range of 25 to 35 mm in the length direction of the head, and both outsides of the toe 7 and the heel 8 side. When divided into areas B, a plurality of first depressions 6A are formed in the central area A in the length direction and the width direction with the face center C substantially as the center, and the first depressions 6A.
The ridges 4 and 5 each of which has a second recess 6B located in contact with A and a third recess 6C formed in both outer side areas B, and which defines the recesses in the order from the third recess to the first recess, are sequentially increased in height. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head in which at least a face member is made of a metal material.

[0002]

2. Description of the Related Art Whether a wood type or iron type head, or a head made of a single material or a composite material, if the face member is made of a metal material, the face member will be hit. The strength required to withstand repeated impacts is required. For example, stainless material (S
In the head cast from US630), the face member needs to have a thickness of at least 2.8 mm. In addition, the face member has a substantially uniform thickness vertically and horizontally,
As the face area increased, so did the weight.

[0003]

In order to improve the strength of the face member, it is necessary to make the wall thickness thicker, the weight also increases, which is disadvantageous in making the head large.

Therefore, an object of the present invention is to provide a golf club head which can reduce the weight of the face member, prevent the strength from decreasing, and make the head large.

[0005]

In order to achieve the above object, the present invention provides a golf club head in which at least a face member is made of a metal material. Similarly, it has a large number of ridges that are inclined and extend at intervals, and a plurality of ridges that are similarly inclined in the other direction from the top portion of the head to the sole portion and are spaced and that are extended by intersecting ridges. However, when the face member is divided into a central area in the range of 25 to 35 mm in the length direction of the head and both outer areas on the toe and heel sides, the dent is substantially the center of the face center. A plurality of first dents respectively in the length direction and the width direction as a center, a second dent located in contact with these first dents, and a third dent formed in both outer regions Rinari, in which the height of the ridge defining a recess from the third recess in the order of the first recess are sequentially high.

A preferred embodiment of the present invention will be described below with reference to the drawings.

[0007]

1 is a view of a face member 1 of a wood type golf club head as viewed from the back surface, that is, from the inside. The face member 1 is entirely made of stainless steel.
It is made of a metal material such as titanium or its alloy, aluminum or its alloy. A large number of ridges 4 are formed on the back surface of the face member 1 from the top portion 2 to the sole portion 3 in one direction and extend at intervals, and similarly from the top portion 2 to the sole portion 3. A large number of ridges 5 that extend in a direction different from that of the ridge 4 and are spaced apart from each other and extend to intersect the ridge 4 are formed. Due to the formation of the large number of ridges 4 and 5, the depression 6 defined by them is formed.
Are formed in large numbers. A vertical line x passing through the center C of the face member 1 is assumed, and a range of 25 to 35 mm extending in the left-right direction, that is, the lengthwise direction of the face member 1 with the vertical line x as the center is defined as a central area A, and the left and right sides of the central area A are adjacent to each other. Is defined as both outer areas B, the depressions 6 existing in both outer areas B are referred to as third depressions 6C, and the depressions 6 existing in the central area A and above and below and to the left and right of the center C are referred to as first depressions 6A. The dent 6 located in contact with the first dent 6A existing in the above is referred to as a second dent 6B.

FIG. 2 shows a face member 1 as shown in FIG.
Showing a wood-type golf club head having
A face surface 9 is defined by the heel 8, the top portion 2 and the sole portion 3. A crown portion 10 is formed from the top portion 2 to the rear side. Reference numeral 11 indicates a hosel into which the shaft is inserted.

FIG. 3 is a simplified view of the location of the recess 6 defined by the ridge 4 and the ridge 5. The angle formed by the perpendicular line x (or a line x ₁ parallel to the perpendicular line) and the center line of the ridge 4 is α _1, and the angle formed by the perpendicular line x and the center line of the ridge 5 is α ₂
Then, in this example, both α ₁ and α ₂ were set to 30 °. It is preferable that α ₁ and α ₂ are in the range of 25 to 35 °. When the distance between the ridges 5 is d ₁ and the distance between the ridges 4 is d ₂ , both are 8 mm in the case of this embodiment.
However, the distances d ₁ and d ₂ can be in the range of 6 to 10 mm. In this embodiment, the depression 6 has a parallelogram shape.

The heights of the ridges 4 and 5 for partitioning the first, second and third recesses 6A to 6C are h ₁ , h ₂ and h _{3 respectively.}
Then (see FIGS. 4 to 6), the heights of the ridges 4 and 5 have a relationship of h ₁ > h ₂ > h ₃ . In this embodiment, stainless steel is used as the metal material forming the face member 1, and h ₁ = 4 mm, h ₂ = 3 mm, h ₃
= 2 mm, and the ratio was 4: 3: 2. The thickness t between the bottom of the depression 6 and the face 9 is 1 mm, and the ridges 4, 5
The width w at the top position was 2.5 mm, and the side surfaces of the ridges 4 and 5 and the bottom surface of the recess 6 were joined by a curved surface having a radius of curvature R of 2 mm. Both side surfaces of the ridges 4 and 5 are formed substantially vertically or slightly wider toward the curved surface forming position.

The ridges 4 and 5 located at the boundary between the first depression 6A and the second depression 6B in contact with the central area A give a height h ₁ (4 mm), and the central area A and both outer areas B are provided. The ridges 4 and 5 that define the depressions 6 located on the boundary line of the area have a height h ₂ (3 mm) included in the central area A and a height h ₃ (2 mm) included in both outer areas B. ). The heights of the ridges 4 and 5 are h ₁ to h ₂ and h ₂ to h _3.
It is preferable that the portion transitioning to is provided with an inclination of an angle β as shown in FIGS. The angle β in this example was 30 °.

The embodiment shown in FIG. 9 shows an example applied to an iron type golf club head. Ridges 4 and 5 are provided on the back surface of the face member 1, and the depressions 6 are defined by these ridges 4 and 5. There is.

The ridges 4 and 5 and the face surface 9 are usually integrally cast by a lost wax manufacturing method or the like. The height of the ridges 4 and 5 at the central portion of the face member 1 is increased because the ball is hit frequently at this portion and the strength of this portion is increased.

[0014]

As described above, according to the present invention, on the back surface of the face member, a large number of ridges which are inclined in one direction from the top portion of the head to the sole portion and extend at intervals, and similarly, the top portion of the head is formed. Slopes from one part to the other,
It has recesses that are spaced apart from each other and are partitioned by a large number of ridges that extend so as to intersect with the ridges. The recesses have the face member centered on the face center and the head length direction 25.
When divided into a central area in the range of up to 35 mm and both outer areas on the toe and heel sides, a plurality of first depressions are formed in the central area in the length direction and the width direction with the face center substantially as the center. Since the height of the ridge that comprises the second recess located in contact with the recess and the third recess formed in both outer regions and that defines the recess from the third recess to the first recess is increased sequentially, the weight of the face member is reduced. Therefore, even if the weight is reduced, the strength is not lowered, and the reduced amount can be used for increasing the size of the face member. In addition, since the height of the ridge at the center of the face member is the highest and the height of the ridge at the periphery of the face member is the lowest, the elastic characteristics of the face member can be effectively maintained.

[Brief description of drawings]

FIG. 1 is a rear view of a face member.

FIG. 2 is a perspective view of a wood golf club head.

FIG. 3 is a schematic view of one hollow portion.

FIG. 4 is a sectional view of a first hollow portion.

FIG. 5 is a sectional view of a second hollow portion.

FIG. 6 is a sectional view of a third recessed portion.

FIG. 7 is a cross-sectional view of the ridge existing from the first recess to the second recess.

FIG. 8 is a cross-sectional view of the ridge existing from the second recess to the third recess.

FIG. 9 is a perspective view of an iron-based golf club head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Face member 2 Top part 3 Sole part 4,5 Ridge 6 Dimple 6A 1st dimple 6B 2nd dimple 6C 3rd dimple 7 Toe 8 Heel 9 Face surface A Center area B Both outer areas

Claims (3)

[Claims] 1. A golf club head in which at least a face member is made of a metal material, and a plurality of ridges which are inclined in one direction from a top portion to a sole portion of the head and extend at intervals on the back surface of the face member, Has a recess that is inclined in the other direction from the top part of the head to the sole part, is spaced apart, and is partitioned by a large number of ridges that extend so as to intersect with the ridge. When divided into a central area in the range of 25 to 35 mm in the length direction of the head and both outer areas on the toe and heel sides, there are a plurality of first areas in the central area with the face center substantially as the center. 1 depression, a 2nd depression located in contact with these 1st depressions, and 3rd depressions formed in both outer regions, and depressions in order from 3rd depression to 1st depression Golf club head which is characterized by sequentially increasing the height of the ridge that divides. 2. The golf club head according to claim 1, wherein the first to third depressions have substantially parallelogram shapes. 3. The golf club head according to claim 1, wherein a pair of the first recesses are formed in the length direction and the width direction of the face centering on the face center.