JPH0648722U - Golf iron club - Google Patents

Abstract

(57) [Summary] [Construction] A golf iron club having a head having a slanted grooved striking face, wherein the weight of the head 1 is on the rear side of the striking face 8 and has a convex shape. It is concentrated on the two sides 7, 10 of the lower side wall forming the sole. [Effect] It is possible to minimize the twisting of the head on a miss shot, give a more comfortable hitting feeling to a player with moderate or inexperience, and reduce fatigue.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a new iron type golf club.

[0002]

[Prior art]

 An iron, as broadly designated by 1 in FIG. 7, has as an essential component a shaft 2, which has a grip (not shown) formed at one end and a hosel 5 at the other end. , Is connected to the head 4 via this. The hosel 5 is connected to the head 4 via a neck 6 located at the end of the heel 7.

The head body 4 is generally made of cast or forged metal and has a flat striking surface 8 inclined by a predetermined angle, which is called the opening angle or “loft” angle. ing. The striking face 8 has a grooved striking zone 9 whose bottom is delimited by a lower end 11, which is located in front of the inner end 12. The flanks of each side of the grooved striking zone 9 are made smooth, the smaller part near the neck 6 is called the heel 7 and the larger part on the opposite side is called the toe 10.

In the case of a standard iron as shown in FIG. 7, the thickness e ₁ and width l ₁ of the upper rim 12 and the thickness e ₂ of the sole 15 are substantially constant. The width l ₂ of the sole increases from the heel 7 to the toe 10, and the weight is distributed substantially to the rear side of the striking face 8. U.S. Pat. Nos. 1,128,288 and 4,621,813 disclose a golf iron club in which the distribution of the weight of the head is in the periphery after the striking face, more precisely in the sole. Is disclosed. This club has the advantage of making the club more resistant to twisting on off-center shots. To do this, the sole is formed of three separate parts, namely two lateral ends and a central part, which all have the same width.

[0005]

[Means for solving the problem and its action]

 The present invention relates to an improvement of an iron golf club of this type. According to a first feature of the invention, the two ends are wider and thicker than the central part. All in all, each of these parts adopts a general curvilinear shape, for example, when viewed from above, the rear end is convex on each of the two lateral ends, The central part is concave. The outer shape of the sole is, as it were, intended to come into contact with the ground and is generally convex, while its inner shape is located on the opposite side and is generally concave.

[0006] Thus, due to various geometrical features, a large amount of weight is distributed at the ends of the soles on both sides of the center of the hitting point, thereby saving a large number of miss shots for a player with a medium or no experience. It is possible. Further, the sole is inclined upward and outward so as to leave the striking surface of the club from the trailing edge.

[0007]

【Example】

The manner in which this invention is implemented and the advantages derived therefrom will be better understood by the following examples, with reference to the accompanying drawings. According to the main feature of the present invention, in the iron, as shown in the figure, a part of the weight of the head is concentrated on the lower part of the boundary with the rear surface 21. For this purpose, the upper rim 22 has a thickness e ₁ and a width l _1, which are substantially constant from the heel 7 to the toe 10.

In contrast, the wall formed by the concave inner surface 25 and the sole 15 (see FIGS. 1 and 2) is thicker and wider than the upper rim 22. The wall increases in width from the heel 7 or toe 10 toward the central portion 28 and then decreases to l ₂ and the thickness decreases to e ₂ . That is, the thickness and width of the toe and heel (26, 27) portions lateral to the central portion 28 are increased, thereby concentrating the weight on the ends 7, 10 and both sides of the striking zone of the striking face. Further, the lateral portion 27 on the side of the toe 10 is thicker than the heel 26, which is also thicker than the central portion 28 (see Figures 4 to 6).

In practice, this inner wall 25 has, first of all, a recess in its central part 28 which is connected to the heel 7 and toe 10 respectively via two curved sections 26, 27 ( 1 and 2). The thickness e ₂ of the sole 15, measured in the same plane as the rear surface 21, gradually decreases from the toe 10 to the heel 7. Similarly, each of the three portions 26, 27, 28 of the wall forming the sole 15 has a continuous concave surface that is slightly curved as a whole three times in a plane parallel to the plane of the striking face 8. It has a shape (see FIG. 1).

In practice, in each of the parts 26, 27, 28 the thickness of the sole 15 gradually decreases from the inner surface 30 towards the end 11 (also see FIGS. 4 to 6). The portion 30 formed between the lower wall 25 forming the sole 15 and the upper rim 22 is flat and parallel to the striking face 8 (see FIGS. 4 to 6). The thickness of the recess 30 is substantially constant, close to 4.5 mm, which allows the weight to be concentrated on the sole 15.

The lower wall forming the sole 15 has a notch formed in the central portion 28, which allows the weight to be better redistributed over the side portions 7, 10 and also to the head portion. The center of gravity can be aligned with the center. The central region of the top surface of the upper ridge 23 is preferably substantially coextensive with the central region 28 of the sole. Such an arrangement causes the center of gravity of the club head to be between these two central regions. The lower part 32 of the sole 15 is inclined upwards and away from the trailing edge on the striking face 9, as shown in FIGS. 4 to 6.

By using these configurations in combination, the state of weight redistribution to the peripheral portion, over the rear side of the striking surface, and in the vicinity of the sole is improved, and the head, especially the sole, is improved. Lighten. The weight distribution around the head minimizes twisting of the head on miss shots. As described above, the club of the present invention can provide a more comfortable hitting feeling to a player who is moderate or inexperienced and can reduce fatigue as compared with the conventional club.

[0013]

[Effect of device]

 As described above, according to the present invention, the redistribution state of the weight to the peripheral portion, over the rear side of the striking surface, and in the vicinity of the sole is improved, whereby the head on a miss shot is This has the excellent effect of minimizing the twist, giving a more comfortable hitting feeling to a player with moderate or inexperience and reducing fatigue.

[Brief description of drawings]

FIG. 1 is a view of an iron head of the present invention seen from the rear.

FIG. 2 is a bottom view of the iron head of the present invention.

FIG. 3 is a top view of the iron head of the present invention.

FIG. 4 IV-I on the side of the heel of the head of the present invention
It is a figure which shows the cross section along the V'line.

FIG. 5: V-V 'in the central part of the heel of the head of this invention
It is a figure which shows the cross section along a line.

FIG. 6 is a cross-sectional view taken along line VI-VI ′ of the toe portion on the side of the heel of the head of the present invention.

FIG. 7 is a view of a conventional iron viewed from the rear side.

[Explanation of symbols]

 1 head 7 heel 8 striking surface 10 toe 11 lower end portion 15 sole 26, 27 side end portion 28 central portion

Claims (3)

[Scope of utility model registration request] 1. A toe (10) and heel on each side
A slanted grooved striking surface defined by (7) and whose bottom is defined by a lower end (11) forming a sole (15)
A golf club comprising a head (1) having (8), wherein the weight of the head (1) is on the rear side of the striking surface (8) and on the lower side forming a substantially concave sole (15). Is concentrated in the two lateral parts (7, 10) of the wall of the wall, and the thickness measured in a direction parallel to the striking face (8) of the lower wall forming the sole (15) is: A golf iron club characterized by being smaller than the lateral end portions (26, 27) in the central portion (28). 2. The two lateral end portions (26, 27) are wider and thicker than the central portion (28), and the outer ends of each portion have end portions (26, 27). 2. The golf iron club according to claim 1, wherein the golf club has a substantially convex shape with respect to (1) and a substantially concave shape with respect to the central portion (28). 3. The head has a sole, and the sole (1
The thickness of the lower side wall forming 5), when measured in a direction parallel to the striking face (8), has a lateral end in the central part (28).
Smaller than (26,27) and its sole (15)
The two lateral ends (26, 27) of are wider and thicker than the central part (28) and the outer ends of each part are convex with respect to the ends (26, 27). A golf iron club according to claim 1 or 2, characterized in that it has a general shape connected to a central portion (28) having a substantially concave shape.