JP3056693U - Golf club metal head - Google Patents

Abstract

(57) [Summary] Regarding (claim 1), the effective hitting area in the heel direction from the toe of the metal head is enlarged. Regarding (claim 2), the hit point mass of the face shell is increased.
Regarding (Claim 3), the air flow is rectified to improve swing-through. With regard to (claim 1), a restriction is imposed on the constituent angle of the joining component between the face shell toe and the side shell.
Regarding (Claim 2), a convex structure is provided on the back surface of the face shell hitting point. Regarding (Claim 3), a plurality of convex structures are arranged at right angles to the head traveling direction on a part of the upper surface shell, the side surface shell, and the sole surface of the metal head.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention concerns the manufacture of metal heads for golf clubs.

[0002]

[Prior art]

 Regarding (Claim 1), the metal head of the golf club is composed of a four-sided shell of a hitting face shell, a side shell, a top shell, and a sole shell. One of the face shell configurations, the toe of the hit face face shell and the side shell has an angle of 105 ° or more. Regarding (Claim 2), the metal material of the metal head is currently made of light specific gravity metal such as titanium or steel, but the weight per unit area is light specific gravity metal and steel metal. The face shell is made by adjusting the thickness of the face shell formation so that it has the same weight, and having the same mass. As a result, the effective hitting area increases, but the hitting weight decreases. While wood clubs have become increasingly large, they have their disadvantages. Regarding (Claim 3), in golf play, the swing speed of the wood club is about 33 m / s to 50 m / s, but the air resistance increases due to the increase in the volume of the metal head to 300 cc. The need to rectify the airflow has arisen.

[0003]

[Problems to be solved by the invention]

 The problem of claim 1 is to increase the effective hitting area in the heel direction from the toe of the metal head. The problem of claim 2 is to improve the hitting effect by increasing the hit point mass of the sweet spot. (Claim 3) is to rectify the air flow during the swing and improve the swing of the club.

[0004]

[Means for Solving the Problems]

 (Claim 1) When the constituent angle of the toe portion between the face shell and the side shell is 115 ° or 105 °, the effective hitting ball area closer to the toe from the center point of the face shell in the toe direction is different from the center point of the face shell. When the limit point is 105 °, it has been found from the experimental values that it extends toward the toe slightly less than 5 mm. For that reason, we decided to limit the angle of the face shell and side shell to increase the effective hitting area. (Claim 2) The weight of the hit spot of the sweet spot of the golf club is becoming thinner as the metal head is made larger, and the thickness of the face shell is becoming thinner, and the weight of the hit point is decreasing. As a means to compensate for the decrease in the hitting point mass, a structure in which a number of protrusions are arranged or a girder structure is provided on the back side of the hitting point of the face shell. Or, a structure in which the above two types of structures are mixed and provided. (Claim 3) Large metal heads have come to feel air resistance. As a means of rectifying the air flow during the hitting ball swing, the air flow in the direction of 90 ° with respect to the head traveling direction is formed on the top shell of the metal head, the toe of the side shell, and a part of the sole surface. Arrange convex parts that promote rectification of

[0005]

[Embodiment of the invention]

 In the embodiment of claim 1, the metal head is manufactured by setting the angle of the toe portion of the hitting face face shell and the side face shell to 100 ° or less without losing the functional beauty of the shape of the wood club and its uniformity. To do. In the embodiment of (Claim 2), a large number of protrusions are arranged on the back of the face shell. The arrangement pattern is arranged according to the design intention of the metal head. There is also a method of forming a convex part by forming a girder. In this case, the shape is designed and manufactured so as to work effectively for the hitting ball effect. In both cases, the adjustment of the hit point mass and the hit point mass effect will effectively affect the hit ball results, depending on the convex array density and the form of the girder formation. The embodiment of (Claim 3) acts on the progress of the metal head at the time of the ball swing. 1. In order to promote air flow regulation, in order to promote air flow rectification in the direction of 90 ° with respect to the head traveling direction, the upper shell of the head, the toe portion of the side shell, and a part of the sole surface of the head. Small convex parts are arranged linearly with 0 mm as the maximum limit. The shape of the small convex part is based on the design intention.

[0006]

【Example】

 As an embodiment of (Claim 1), in designing the face shell of the hitting ball, the height of the face is set to 52 mm, and the basic type is configured to have a vertical to horizontal ratio with a golden ratio. A metal head was created with a configuration angle of 99 ° with the shell. It is noted here that the effective hitting area of the metal head is the maximum in the head volume 280cc class. In the embodiment of (Claim 2), many patterns can be considered as the arrangement pattern of the convex portions. Also, there are various shapes that can be formed with girders, such as hexagons, pentagons, squares, triangles, etc., based on other design intentions. In addition, the mixed structure of the protrusion and the girder is considered to be effective. It is important to take care not to form girders that would lose the spring effect of the face shell when forming girders. Regarding the embodiment of (Claim 3), various types of patterns such as an elliptical dimple shape, a perfect circular dimple shape, and a zigzag arrangement are conceivable.

[0007]

[Effect of the invention]

 (Claim 1) As described in the previous section (0006), the effective hitting area was maximized. As for the effect of using it, reducing the width of the left and right sides by slightly less than 30% was also effective. Regarding (Claim 2), it has been confirmed in an experiment of a convex array method that the trajectory of a hit ball is slightly lower than that of a head without a convex portion. Regarding (Claim 3), it has been confirmed that the wind noise of the head during the swing has been reduced slightly.

[Brief description of the drawings]

FIG. 1 is a sectional view according to claim 1;

FIG. 2 is a sectional view according to claim 2;

FIG. 3 is a diagram according to claim 3;

[Explanation of symbols]

 (1) Face shell of metal head (2) Side shell of metal head (3) Angle of joint component (4) Convex structure (5) Metal head upper shell (6) Metal head sole surface

Claims (3)

[Utility model registration claims] 1. A metal head structure in which the angle of formation of the toe portion between the hitting face face shell and the side face shell is set to 100 ° or less, and the effective hitting area is enlarged in the heel direction from the toe. 2. A metal head structure in which a convex structure is provided on the back surface of a hitting face face shell, and the hitting point mass is adjusted according to the design intention by the arrangement density and the formation of girders. 3. The head upper surface shell and the sole surface have a length of 2.0 m.
A metal head structure in which m or less convex structures are arranged in a direction at 90 ° to the traveling direction.