KR101976321B1 - Golf ball improved straightness - Google Patents

Abstract

The present invention is devised to solve problems of the prior art, and the purpose of the present invention is to provide a golf ball which has a simple shape and improves straightness. The present invention comprises: a core (10) formed as a sphere; a mantle layer (20) formed by multiple (n-2) layers covering the core (10); and a cover (30) having a Dimple on the outer surface of the mantle layer (20). The present invention is as follows: forming one string-shaped groove (100) on a portion forming a maximum circumference of an outer circumference of the core (10); inserting a ring (200) into the string-shaped groove (100), wherein the ring is made of materials having a larger unit mass than a unit mass of the core (10); and the ring (200) does not protrude outwardly the outer circumference of the core (10) when inserted into the string-shaped groove (100); after the ring (200) is inserted into the core (10), covering the mantle layer (20_1, 20_2 to 20_n) towards an outside of the core (10); and covering the cover (30) in the outside of the mantle layer to improve straightness.

Description

GOLF BALL IMPROVED STRAIGHTNESS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf ball having improved straightness, and more particularly, to a golf ball having reduced slice or hook occurrence and improved straightness in a field or when hitting a golf ball in green.

As a rule of thumb for a golf ball, a golf ball weighs less than 1.620 ounces (45.93 grams) and should be at least 1.680 inches (42.67 mm) in diameter. It also stipulates that the ball must not be devised, manufactured or intentionally modified to have characteristics that differ from those of spherically symmetrical balls.

After a five-thousandth impact of golf swing, the golf ball is spinning at around 3,000 rpm, about 200 to 300 meters.

In such a situation, the golf ball is constantly being developed, and the golf balls currently in use can be used in various ways, such as one piece, two pieces, three pieces, and four pieces, depending on how many cores, .

However, in the case of a golf ball having a multi-layer structure as described above, if a plurality of layers are made, a slight error in the thickness of each layer may be generated. Due to such an error, the center of gravity is shifted to one side and eccentricity is formed. In the case of a ball, even if the shot or putting is good, the ball does not advance in the target direction exactly.

In addition, various dimples are formed on the surface of the golf ball to solve problems such as straightness.

In addition to the improvement of dimples as described above, a golf ball disclosed in Japanese Patent Application Laid-Open No. 11-89968 (published on April 6, 1999) as a prior art includes a golf ball A heavy particle or a ring is arranged so as to be symmetrical with respect to the center to increase the inertial mass with respect to a specific rotation axis to strongly maintain the initial rotation axis of the ball in the emergency state to suppress the change of the orbit.

In addition, a golf ball having a weight portion selectively (Japanese Patent Laid-Open Publication No. 2002-325861 (published on November 12, 2002)) has an inner insert selectively attached with a weight, Discloses a technique for improving the spin speed by covering the periphery of the formed outer core and the outer core with a cover.

Also, Japanese Patent Publication No. WO2005 / 002681 2005. 1. International Patent Publication No. 13 (International Publication) discloses a golf ball and a manufacturing method thereof (Patent Document 3). In the golf ball and its manufacturing method (patent document 3), three core- Discloses a technique that allows a high repulsive force and a soft feeling to be felt at the time of hitting.

In addition, in a balanced rotation golf ball (Patent Document 4) of Patent Publication No. 1703045 (published on Mar. 2, 6, 2017), a protruding rotary band protruding in the form of a band is formed along the outer periphery of the core, A pair of semispherical outer sheaths are put on the outer side of the core so that the joint line formed by the sheath joint is positioned outside the projecting rotary bands when the joint is engaged, and the projecting rotary bands are formed to pass through the upper pole point and the lower pole point of the core And the projecting rotary bands are made of the same material as that of the core, and are formed to have a thickness smaller than the thickness of the shell.

The conventional golf balls described in the above patent documents are not easy to provide some weight on the inside of the golf ball or to improve the repulsive force and straightness by forming a band on the inner surface, . In addition, in the case of a cover, a synthetic resin material such as urethane is often used even in a thickness of about 1 mm or less. Therefore, when the protruding rotary bands are formed on the cover side, the protruding rotary bands leak out to the outside of the cover And it is difficult to use repeatedly in the field.

: Japanese Laid-Open Patent Publication No. 11-89968 (published on April 6, 1999) : Japanese Unexamined Patent Application Publication No. 2002-325861 (published November 12, 2002) : Japanese Patent Publication No. WO2005 / 002681 2005. 1. International publication) : Registration Patent Publication No. 1703045 (published on February 6, 2017)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a golf ball having a simple shape and high straightness.

It is another object of the present invention to provide a golf ball which can be applied to a golf ball having a plurality of layers as described above or a golf ball having various dimple designs, and which further improves straightness.

It is another object of the present invention to prevent variations in the thickness of the cover and prevent the outer shape from being deformed and unusable even when used many times.

(1) a core 10 having a spherical shape; a mantle layer 20 formed of a plurality of (N-2) layers covering the core 10; and A golf ball comprising a cover (30) having a dimple on an outer surface of a mantle layer (20), characterized in that one strip-shaped groove (100) is formed in a portion of the outer circumferential surface of the core The ring 200 is inserted into the groove 100 and the material of the ring 200 is made of a material having a unit mass larger than the unit mass of the core 100. When the ring 200 is inserted The mantle layers 20 _1, 20 _{2, ...} are formed outside the core 10 after the ring 200 is inserted into the core 10 so that the ring 200 does not protrude out of the outer circumferential surface of the core 100 _. , 20 _n ) and covering the cover (30) outside the mantle layer to improve the straightness.

[2] The golf ball according to the above [1], wherein the strip-shaped groove (100) and the ring (200) are formed of a circle or a rectangle.

[3] The golf ball according to the above [1], wherein the unit mass of the ring (200) does not exceed twice the unit mass of the core (10) will be.

Further, the present invention is characterized in that a circular line is engraved in a corresponding portion of the cover (30) concentrically forming the ring (200) in the above [2] or [3] It is about a golf ball.

[5] The golf ball according to [2] or [3], wherein the width of the ring (200) ranges from 1 mm to 5 mm.

With the golf ball of the present invention having the above-described structure, the shape of the golf ball is simple and high linearity is improved.

Further, by inserting the ring into the strip-shaped groove formed in the core of the golf ball of the present invention, the straightness is improved.

In addition, since the golf ball of the present invention draws a putting line line on a corresponding portion of a cover that draws a ring and a concentric circle, the direction can be easily set when a golfer takes a shot.

In addition, the golf ball of the present invention may limit the width of the ring so as to limit excessive concentration of mass around the ring.

1 is a cross-sectional view showing a state in which a ring is inserted into a two-piece golf ball of the present invention.
2 is a cross-sectional view showing a state in which a ring is inserted into the three-piece golf ball of the present invention.
3 is a cross-sectional view showing a state in which a ring is inserted into the four-piece golf ball of the present invention.
4 is a cross-sectional view showing a state where a ring is inserted into the N-piece golf ball of the present invention.
5 is an exploded perspective view of the N-piece golf ball of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG.

1 to 5, the present invention is characterized in that it comprises a spherical core 10, a mantle layer 20 formed of a plurality of (N-2) layers covering the core 10, Shaped groove (100) is formed at a portion of the outer circumferential surface of the core (10) that forms the maximum circumference, and the strip-shaped groove (100) The ring 200 is inserted into a material having a unit mass larger than the unit mass of the core 10 and the ring 200 is inserted into the band groove 100, ) Layer of the mantle 20 and the cover 30 to improve the straightness of the golf ball.

Hereinafter, the embodiments of the two-piece, three-piece, four-piece, and N-piece golf balls will be described.

[Example 1]

The two-piece golf ball of the present invention will be described with reference to FIG.

First, a cover 30 having a core 10 and a dimple 31 covering the core 10 is a general component in the first embodiment of the present invention.

The present invention is characterized in that a single strip-shaped groove 100 is formed at a portion of the outer circumferential surface of the core 10 that forms the maximum circumference, and the ring 200 is inserted into the strip- do. In this case, the material of the ring 200 is made of a material having a unit mass larger than the unit mass of the core 10.

The width of the band-shaped groove 100 is 1 to 5 mm, and the ring 200 is formed to match the shape of the band-shaped groove 100. Here, the width means width and length when the strip-shaped grooves 100 are formed in a quadrangle, and maximum diameter when the strip-shaped grooves 100 are formed in a circle.

By thus limiting the size and mass of the strip-shaped groove 100 and the ring 200, it is possible to prevent the mass of the golf ball from concentrating too much around the ring 200 by adding the ring 200 .

Further, the ring (200) is prevented from protruding from the outer peripheral surface of the core (10) in a state of being inserted into the band groove (100).

When the ring 200 is inserted into the strip-shaped groove 100 of the core 10 as described above, the cover 30 is covered with the cover 200. At this time, And the putting line 300 is displayed at the periphery.

[Example 2]

The three-piece golf ball of the present invention will be described with reference to FIG.

A cover 30 having a core 10 and a dimple 31 covering the core 10 and a cover 30 covering the core 10 and the cover 30, And a mantle 20 between them.

1, a strip-shaped groove 100 is formed at a portion of the outer circumferential surface of the core 10, which is the maximum circumference of the strip-shaped groove 100, The ring 200 is inserted. In this case, the material of the ring 200 is made of a material having a unit mass larger than the unit mass of the core 100.

In addition, the ring 200 is prevented from protruding from the outer circumferential surface of the core 100 in a state of being inserted into the strip-shaped groove 100.

As described above, after inserting the ring 200 into the core 10, the mantle 20 is covered and the cover 30 is covered on the outside of the mantle 20.

The putting line 300 is displayed on the outer periphery of the cover 30 corresponding to the ring 200 inserted into the band-shaped groove 100 of the core 10 as described above.

[Example 3]

The four-piece golf ball of the present invention will be described with reference to FIG.

A cover 30 having a core 10 and a dimple 31 covering the core 10 and a cover 30 which is provided between the core 10 and the cover 30 Mantle 20 ₁ and outer mantle 20 ₂ .

As in the first and second embodiments, a single strip-shaped groove 100 is formed at a portion of the outer circumferential surface of the core 10 that forms the maximum circumference, and the strip- The ring 200 is inserted into the groove 100. In this case, the material of the ring 200 is made of a material having a unit mass larger than the unit mass of the core 100.

In addition, the ring 200 is prevented from protruding from the outer circumferential surface of the core 100 in a state of being inserted into the strip-shaped groove 100.

As described above, after the ring 200 is inserted into the core 10, the mantle 20 ₁ and the outer mantle 20 ₂ are covered, and the cover 30 is covered on the outside of the mantle 20.

The putting line 300 is displayed on the outer periphery of the cover 30 corresponding to the ring 200 inserted into the band-shaped groove 100 of the core 10 as described above.

[Example 4]

The N-piece golf ball of the present invention will be described with reference to FIG.

A cover 30 having a core 10 and a dimple 31 covering the core 10 and a cover 30 which is provided between the core 10 and the cover 30 And has mantles 20 ₁ to 20 _n . Here, the outermost mantle is referred to as 20 _n .

As in the first to third embodiments, one of the strip-shaped grooves 100 is formed at a portion of the outer circumferential surface of the core 10 that forms the maximum circumference, and the strip- The ring 200 is inserted into the groove 100. In this case, the material of the ring 200 is made of a material having a unit mass larger than the unit mass of the core 100.

In addition, the ring 200 is prevented from protruding from the outer circumferential surface of the core 100 in a state of being inserted into the strip-shaped groove 100.

As described above, after inserting the ring 200 into the core 10, a plurality of mantle layers 20 _1, 20 _{2, ...} , 20 _n are covered and a cover 30 is coated on the outside of the plurality of mantle layers do.

The putting line 300 is displayed on the outer periphery of the cover 30 corresponding to the ring 200 inserted into the band-shaped groove 100 of the core 10 as described above.

In the present invention, the strip-shaped groove 100 and the ring 200 may be formed of a circle or a square, respectively. Since the shape is limited for ease of manufacture and assembly as described above, it is not excluded to have a different shape.

The width of the ring 200 is preferably in the range of 1 mm to 5 mm. By limiting the minimum width to 1 mm as described above, it is possible to ensure the effect of improving the straightness according to the mass difference, Thereby preventing the side effect of excessively increasing the mass around the ring 200 by limiting the mass. For example, if the maximum width is increased to 5 mm or more, and the mass difference becomes severe, there may be a problem in the directionality when the approach such as the iron shot is performed.

In the drawings of the present invention, the mantle layers 20 _1, 20 _{2, ...} , 20 _n and the cover 30 are shown to have a relatively larger thickness than the actual golf ball, But is merely drawn to facilitate understanding of the shape of the ring 200, and does not mean that the ring 200 is actually formed to have the same size as the drawing.

When the golf ball of the present invention is tee-shotted, the putting line 300 corresponding to the ring 200 inserted in the strip-shaped groove 100 is matched with the golf ball 200, The golf ball can significantly reduce the probability of a hook or a slice.

Also, in the case of putting the golf ball of the present invention, the golf ball is aligned with the putting line 300 indicated to correspond to the ring 200 inserted in the strip-shaped groove 100, , The golf ball can significantly reduce the probability of a hook or slice.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various modifications and variations are possible without departing from the spirit of the invention. Therefore, the scope of the present invention should be construed as being covered by the scope of the appended claims, and technical scope within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

10: Internal core
20: mantle (20 ₁ , 20 ₂ , ..., 20n)
30: cover
31: dimple
100: strip-shaped groove (100)
200: ring (200)
300: putting line (300)

Claims (4)

1. A golf ball comprising a core made of a spherical core, a mantle layer formed of a plurality of layers covering the core, and a cover having dimples on an outer surface of the mantle layer,
A single strip-shaped groove is formed in a portion of the one core outer circumferential surface that forms the maximum circumference,
Wherein the ring is made of a material having a unit mass larger than a unit mass of the core and the ring is prevented from protruding from the outer circumferential surface of the core when the ring is inserted A mantle layer is coated on the outer side of the core after inserting the ring into the core, a cover is coated on the outer side of the outermost mantle layer of the mantle layer,
The groove-like groove and the ring are formed of a circle or a square,
A putting line of a circular line is engraved on the outer periphery of the corresponding portion of the cover drawing the concentric circle with the groove and the ring,
Wherein the width of the ring is in the range of 1 mm to 5 mm. delete delete delete

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