KR20150144227A - Golf ball - Google Patents

Abstract

The present invention relates to a golf ball which comprises: a core; and a cover layer disposed on the core, having a dimple formed by a cover plane, a circumference dimple forming plane, and a central dimple forming plane, and increasing driving distance of the golf ball by generating lift force by the dimple. In addition, the central dimple forming plane on the cover layer is formed on a central part of the dimple and also is dented toward the core.

Description

Golf ball {Golf ball}

The present invention relates to a golf ball.

In the early 14th century of golf, a ball made of beech or lupine was used. Then, to send the golf ball a little further away, a feather ball made of leather with feathers was used. As such, a method for allowing golf balls to be sent farther from past to now has been studied.

In 1800, a ball was made by natural rubber. In 1900, a ball was made by synthetic rubber, and a breakthrough in golf ball was made.

A golf ball usually consists of a cover and a core. One piece ball, which is often used for a practice field, consists of a cover and a core.

As the distance became important, a two-piece ball was introduced and a three-piece ball was introduced as control became important. In recent years, the three-piece highway has met both distance and control. This is not only a four-piece but also a five-piece ball. In the past, control-minded pros used a three-piece ball, distance-critical amateurs used a two-piece ball, and now more amateurs use a three-piece ball.

Initially, users played golf with a smooth surface, but the use of a golf ball resulted in scratches in the surface area of the golf ball, and it was found that using such a ball could send the ball farther. Thus, users have created a dimple on the surface of the golf ball that is nearly circular or circular.

At first, people would not know the principles and just scratch them, but they found that the principle was Bernoulli's principle.

That is, due to the dimples, the airflow at the upper portion of the ball is faster than the lower portion, resulting in a pressure difference, which causes lift to lift the ball up.

As a result, the ball can be raised and the ball can be sent farther due to the high flying ball.

In recent years, a golf ball having about 1000 dimples has been produced, and dimples of various shapes ranging from a circular shape to a hexagonal shape have been used.

Korean Patent Laid-Open No. 1997-0000284 [titled: golf ball having plural dimples]

The present specification aims to provide a golf ball which can easily generate a lift of a golf ball and can fly more easily than an existing golf ball and can transmit the golf ball farther away.

According to one aspect of the present invention, a golf ball comprises: a core; And a cover layer disposed on the core and having a dimple formed by a cover surface, a circumferential dimple-forming surface, and a central dimple-forming surface, and generating lift by the dimple to improve distance of the golf ball , The center dimple forming surface of the cover layer may be formed at the center of the dimple and be punched in the direction of the core.

In the cross section of the golf ball, the tangent slope of the first boundary between the cover surface and the dimple forming surface may be less than the tangent slope of the second boundary between the circumferential dimple forming surface and the center dimple forming surface.

The length between the first boundary and the second boundary may be equal to one-half the diameter of the circle due to the second boundary.

According to another aspect of the present invention, there is provided a golf ball comprising: a core; And a cover layer disposed on the core and having dimples formed by a cover surface, a circumferential dimple forming surface, and a central dimple forming surface, the cover layer comprising a first dimple forming surface A second dimple forming surface continuous with the first dimple forming surface and having a different curvature slope from the first dimple forming surface and a second dimple forming surface continuous with the first dimple forming surface and changing the flow of the air layer changed by the first dimple forming surface, And a third dimple-forming surface continuous with the second dimple-forming surface and having the same curvature slope as the first dimple-forming surface.

The depth between the boundary between the first dimple formation surface and the second dimple formation surface and between the cover surface and the boundary between the boundary between the first dimple formation surface and the second dimple formation surface and the center of the second dimple formation surface are the same can do.

According to the disclosure of the present specification, it is possible to provide a golf ball which can easily generate a lift of a golf ball and can fly more easily than an existing golf ball and can send the golf ball farther.

1 is a perspective view of a golf ball according to an embodiment of the present invention.
2 is a cross-sectional view of the golf ball shown in Fig.
3 is an enlarged view of the area B in the sectional view shown in Fig.
4 is an enlarged view of the area B in the sectional view shown in Fig.
5 is an enlarged view of the area B in the sectional view shown in Fig.

It is noted that the technical terms used in the present invention are used only to describe specific embodiments and are not intended to limit the present invention. In addition, the technical terms used in the present invention should be construed in a sense generally understood by a person having ordinary skill in the art to which the present invention belongs, unless otherwise defined in the present invention, Should not be construed to mean, or be interpreted in an excessively reduced sense. In addition, when a technical term used in the present invention is an erroneous technical term that does not accurately express the concept of the present invention, it should be understood that technical terms can be understood by those skilled in the art. In addition, the general terms used in the present invention should be interpreted according to a predefined or prior context, and should not be construed as being excessively reduced.

Furthermore, the singular expressions used in the present invention include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "comprising" or "comprising" and the like should not be construed as encompassing various elements or various steps of the invention, Or may further include additional components or steps.

Furthermore, terms including ordinals such as first, second, etc. used in the present invention can be used to describe elements, but the elements should not be limited by terms. Terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or similar elements throughout the several views, and redundant description thereof will be omitted.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It is to be noted that the accompanying drawings are only for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the scope of the present invention with reference to the accompanying drawings.

Generally, a golf ball usually has a one-piece golf ball having a structure according to its structure, a two-piece golf ball made of a core and a cover for protecting the core, and a double- There are many kinds of golf balls such as a solid type three-piece golf ball covered with a core.

In general, various types of golf balls are formed with dimples on the outer circumferential surface in which concave recesses are arranged in a constant shape. The dimples are formed to increase the flying distance of the golf ball by reducing the air resistance at the time of hitting the golf club head.

That is, all the golf balls have a plurality of dimples on the outer surface as described above. Since various flight characteristics are determined by the arrangement, size, shape and depth of dimples of such a golf ball, many studies have been made on such dimples.

1 is a perspective view of a golf ball according to an embodiment of the present invention, and Fig. 2 is a sectional view of the golf ball shown in Fig.

Referring to Figures 1 and 2, a golf ball may include a core 10, a cover layer 20 disposed on the core and having a plurality of dimple-forming surfaces.

The golf ball core 10 is mainly made of a synthetic resin such as polybutadiene or a metal such as tungsten. The cover layer 20 is mainly made of urethane synthetic resin, and a suitable material may be used depending on the user's choice.

Here, the shape of the dimples may be circular, triangular, hexagonal, or the like. In this embodiment, a dimple of a circular shape is used, but the present invention is not limited thereto.

The cover layer 20 may have a plurality of dimples 32 formed thereon.

The cover layer 20 may be provided with a cover surface 22 and dimpled surfaces 24, 26 and 28.

Here, the cover surface 22 refers to an area excluding the area in which the dimple is formed on the upper surface of the cover layer 20.

Here, the dimples can be formed by the dimple forming surfaces 24, 26, 28.

The surface formed by the dimple-forming surface 24 and the dimple-forming surface 28 can be defined as the dimple-forming surface. The surface formed by the dimple formation surface 26 can be defined as the center dimple formation surface.

The central dimple forming surface of the cover layer 20 is formed at the center of the dimple and is further paired in the direction of the core.

According to the embodiment of the present invention, due to the area formed by the central dimple forming surface, a lift is generated in the golf ball, and the golf ball can fly farther and higher.

3 is an enlarged view of the area B in the sectional view shown in Fig.

Here, the boundary between the cover surface 22 and the circumferential dimple forming surface 24 may be defined as a first boundary a. The boundary between the circumferential dimple forming surface 24 and the central dimple forming surface 26 may be defined as a second boundary b.

3 (a), in the cross section of the golf ball, the tangent slope K1 of the first boundary between the cover surface 22 and the circumferential dimple forming surface 24 is defined by the circumferential dimple forming surface 24 and May be smaller than the tangent slope (K2) of the second boundary between the central dimple-forming surface (26).

Referring to FIG. 3 (b), the length L1 between the first boundary a and the second boundary b may be equal to half the diameter L2 of the circle due to the second boundary.

 (L1) between the first boundary (a) and the second boundary (b) is less than half of the diameter of the circle due to the second boundary (First Experiment) or the first boundary (L1) between the first boundary (a) and the second boundary (b) is larger than half of the diameter of the circle due to the second boundary (L2) When the golf ball according to the embodiment in which the length L1 between the two boundaries b is equal to half the diameter L2 of the circle due to the second boundary is actually applied, It was confirmed that the golf ball (embodiment) was flying farther and farther than the other two cases.

4 is an enlarged view of the area B in the sectional view shown in Fig.

Referring to FIG. 4 (b), the cross section of the dimple includes a first dimple forming surface 110 for changing the flow of the air layer, a second dimple forming surface 120 for changing the flow of the air layer, 3 dimple-forming surface 130, as shown in FIG.

Fig. 4 (a) shows the flow variation of the air layer on the dimpled surfaces 24, 26, and 28 along the direction of the air.

Referring to Fig. 4, the first dimple forming surface 24 may change the flow of the air layer through the cover surface 22 (C1). In addition, the second dimple forming surface 26 can change the flow C1 of the air layer changed by the first dimple forming surface 24 (C2). Further, the third dimple-forming surface 28 can change the flow C2 of the air layer changed by the second dimple-forming surface 26 again (C3).

The first dimple forming surface 24 may be continuous with the cover surface 22 and the second dimple forming surface 26 may be continuous with the first dimple forming surface 24, The forming surface 28 may be continuous with the second dimple forming surface 26.

The curvature slope of the first dimple-forming surface may be different from the curvature slope of the second dimple-forming surface. The curved surface inclination of the first dimple forming surface may be the same as the curved surface inclination of the third dimple forming surface.

According to the embodiment of the present invention, as shown in Fig. 4, due to the area formed by the first dimple formation surface, the second dimple formation surface and the third dimple formation surface, The ball can fly farther and farther.

5 is an enlarged view of the area B in the sectional view shown in Fig.

Here, the position of the cover surface can be defined as a first boundary e. The boundary between the first dimple-forming surface 24 and the second dimple-forming surface 26 may be defined as a second boundary f.

According to the embodiment of the present invention, the length (P1) between the boundary (f) between the first dimple-forming surface and the second dimple-forming surface and the cover surface (e), the length between the first dimple- The boundary f between the forming surfaces and the length P2 between the centers of the second dimple forming surfaces may be the same.

When the first length P1 is shorter than the second length P2 (the second experiment), the first length P1 is shorter than the first length P1 The golf ball according to the embodiment of the present invention is significantly farther away than the other two cases when the golf ball according to the embodiment is actually applied when the first length P1 and the second length P2 are the same, I could confirm that it flies higher.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Core
20: Cover layer

Claims (5)

core; And
And a cover layer disposed on the core and having a dimple formed by a cover surface, a circumferential dimple forming surface and a center dimple forming surface, and a lift caused by the dimple to improve flying distance of the golf ball,
Wherein the central dimple forming surface of the cover layer is formed at the center of the dimple and is punched in the direction of the core. The method according to claim 1,
Wherein in the cross section of the golf ball a tangent slope of the first boundary between the cover surface and the dimple forming surface is smaller than a tangent slope of the second boundary between the circumferential dimple forming surface and the center dimple forming surface. The method according to claim 1,
Wherein a length between the first boundary and the second boundary is equal to a half of a diameter of the circle formed by the second boundary. core; And
And a cover layer disposed on the core and having dimples formed by the cover surface, the circumferential dimple forming surface, and the central dimple forming surface,
Wherein the cover layer comprises a first dimpled surface for changing the flow of the air layer, a second dimpled surface for changing the flow of the air layer changed by the first dimpled surface, a second dimpled surface formed continuously with the first dimpled surface, Forming surface and the third dimple-forming surface which is continuous with the second dimple-forming surface and which has the same curvature slope as the first dimple-forming surface, and which changes the flow of the air layer changed by the second dimple-forming surface and the second dimple- Wherein the golf ball is a golf ball. 5. The method of claim 4,
The depth between the boundary between the first dimple-forming surface and the second dimple-forming surface and the depth between the cover surface and the boundary between the first dimple-forming surface and the second dimple-forming surface and the center of the second dimple- A golf ball.

Images