KR20090035130A - Inside structure of dimple for golf ball - Google Patents

Abstract

A dimple internal structure of a golf ball is provided, which increases the flight distance of the golf ball by improving lift of the golf ball and controls the airflow within the dimple. A dimple internal structure of a golf ball comprises: a plurality of dimples(10) of the concave type formed in the peripheral part of golf ball; and a protrusion portion(20) or a groove portion selectively formed in the lateral part(12) of the whole or the partial dimple. The protrusion portion or the groove portion is integrally formed along the side part circumference and is formed at a constant interval around the circumference.

Description

Inside structure of dimple for golf ball}

The present invention relates to a dimple internal structure of a golf ball, and more particularly, to a dimple internal structure of a golf ball that can improve the distance by modifying the shape of the side portion in the dimple of the golf ball.

As shown in FIGS. 1 to 4, the dimple internal structure of a conventional golf ball is disclosed in various types, such as hemispherical, dish type, pan type, stepped protrusion type, and the like.

As shown in Figure 5, the dimple inner structure of the golf ball of these forms is the golf ball is rotated to fly in the opposite direction of the travel direction. In this case, the upper surface of the golf ball has a faster flow of air by the dimple than the lower surface. Therefore, it is well known that the lift of the golf ball is generated upward to improve the golf ball distance.

Fan-shaped rather than hemispherical and dish-shaped has been developed to favor lift, and the step-shaped stepped shape is most helpful to lift.

The development of these dimples has allowed the distance to be far away even if the number of dimples in the golf ball is reduced from 500 to about 300, and the surface cover of the golf ball is also developed to a soft synthetic urethane material.

However, such a simple dimple internal structure has a weak lift due to the weak air flow control, and has a limit in improving the distance of the golf ball.

The present invention has been made in order to solve the conventional problems as described above, the dimple inner structure of the golf ball to increase the lifting force of the golf ball to improve the flying distance of the golf ball, and further control the air flow in the dimple To provide that purpose.

In the present invention for achieving the above object, a plurality of concave dimples are formed in the outer peripheral portion of the golf ball, at least one of the protrusion and the groove portion is formed on the side surface of the whole or part of the dimples. As a result, the air flow in the dimple is varied to improve the golf ball distance.

In addition, in the present invention, the protrusions or the grooves are integrally formed along the side circumference or are formed at equal intervals around the side circumference.

In the present invention, the width of the inclined surface direction of the protruding portion or the groove portion is formed from 10 to 90% of the length of the inclined surface of the side portion, and the height of the protruding portion or the depth of the groove portion is formed from 10 to 90% of the depth of the dimple. .

In the present invention, the cross-sectional shape of the protruding portion or the groove portion is formed in at least one of a circle and a polygon.

In the present invention, the protrusion or the groove portion is formed with the bent in the vertical direction of the inclined surface between the upper end and the lower end of the side portion.

As described above, the present invention can form a protrusion or groove in the side surface in the dimple, thereby increasing the lifting force of the golf ball to improve the distance of the golf ball.

In addition, the protrusions or the grooves are integrally formed along the side circumference or are formed at equal intervals around the side part to further control the flow of air.

Protrusions or grooves are formed in the vertical direction of the inclined surface bent between the upper end and the lower end, thereby providing the effect of increasing the lift by controlling the vertical air flow in the dimple.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Figure 6 is a block diagram showing the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention, Figure 7 is a cross-sectional view showing the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention.

8 is a block diagram showing a plurality of protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 9 is a plurality of protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention It is sectional drawing to show.

10 is a block diagram showing a plurality of different protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 11 is a plurality of different protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention It is sectional drawing which shows.

12 is a configuration diagram showing a plurality of further protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 13 is a plurality of further of the dimple inner structure of the golf ball according to an embodiment of the present invention It is sectional drawing which shows another protrusion.

14 is a block diagram showing a plurality of mixed protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 15 is a plurality of mixed protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention It is sectional drawing which shows.

16 is a cross-sectional view showing a conventional protrusion of the dimple inner structure of the golf ball, Figure 17 is a block diagram showing another protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 18 is a view of the present invention Sectional view showing another protrusion of the dimple inner structure of the golf ball according to an embodiment.

19 is a configuration diagram showing another example of the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention, Figure 20 is another example of the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention It is sectional drawing which shows.

Figure 21a is a block diagram showing a rectangular divided protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 21b is a square divided protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention It is a cross section.

22A is a block diagram illustrating a trapezoidal divided protrusion of an internal structure of a dimple of a golf ball according to an embodiment of the present invention, and FIG. 22B illustrates a trapezoidal divided protrusion of an internal structure of a dimple of a golf ball according to an embodiment of the present invention. It is a cross section.

Figure 23 is a block diagram showing the gear-shaped split protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention, Figure 24 is a gear-shaped split protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention It is sectional drawing which shows.

25 is a perspective view showing various protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 26 is a flight state of the golf ball having a dimple inner structure of the golf ball according to an embodiment of the present invention It is a state diagram to show.

27 is a block diagram showing a circular split protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 28 is a circular split protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention It is a cross section.

29 is a block diagram showing a rectangular divided protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention, Figure 30 is a circular rim shaped protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention It is a block diagram showing.

31 is a block diagram showing a mixed division protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention, Figure 32 is a diagram showing a mixed division protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention It is a cross section.

6 and 7, in the dimple inner structure of the golf ball of the present embodiment, a plurality of concave dimples 10 are formed in the outer circumference of the golf ball, and the side portions of the dimples 10 in whole or in part thereof ( 12) The protruding portion 20 is integrally formed in a rim shape around the periphery.

That is, the dimple inner structure of the present embodiment is a structure that is not a stepped protrusion on the side portion 12 inside the dimple 10 of the golf ball, which could not be realized in the conventional dimple internal structure of the golf ball. It is a dimple internal structure of a golf ball having a different structural form to give a change to the side portion 12 in the dimple 10 to generate a lifting force.

In the dimple internal structure of the golf ball, as shown in the present exemplary embodiment, the convex protrusion 20 may be integrally formed in a belt shape around the side surface 12. The protrusion 20 allows more air to flow in the upward direction of the golf ball during the flight of the golf ball. However, in the downward direction of the golf ball to control the flow of more air, it is possible to improve the lifting distance of the golf ball to improve the lift.

In addition, the present embodiment can be referred to as an effective embodiment that not only improves the lift of the golf ball, but also improves the feeling of hitting. In particular, since the hitting of the club head hits the club head to the protrusion 20 of the side part 12, the hitting feeling is improved by the transmission of the force.

As shown in FIG. 7, in the stepped form of the side surface seen in the conventional golf ball, a semicircular band is formed integrally with the dimple side portion, and the bending degree of the entire golf ball is increased to provide lift. It is another form of configuration.

In the case of injection molding the golf ball of the present embodiment, it may be considered that there is a difficulty due to the protrusion at the time of detachment of the golf ball from which the injection molding is completed. However, in recent years due to the development of a soft soft synthetic resin forming a cover of the golf ball is possible to be separated. For example, due to the urethane cover (urethane cover) and surlyn (surlyn cover), the manufacturing problem is solved, so that the departure is not a problem.

The dimple depth (D) and the normal dimple depth (D) are 0.15 to 0.24 mm, and each manufacturer manufactures the dimple depth and the number of dimples, so in this embodiment, the dimple depth (D) is 0.2 mm. Will be described as an example.

When the dimple depth D is 0.2 mm, the width W of the dimple is about 3 to 7 mm, and the width of the dimple is determined according to the number of dimples and the number of dimples. However, the width of the dimple is 6 mm. As shown in FIG. 7, since the inclined surface length d of the dimple becomes slightly longer than the value of the dimple depth D, the relationship of D> d is established.

Therefore, defining the height h of the protruding portion of the side portion based on the dimple depth D has a large difference in the inclined surface length d even at the same depth in the dish type having a small inclination and the fan type having a large inclination.

Therefore, it is preferable that the height h of the protruding portion of the side portion is based on the dimple depth D, and the inclined surface width W1 of the protruding portion of the side portion is represented based on the inclined surface length d of the dimple.

Therefore, in the dimple internal structure, the height h of the protrusion of the side portion is preferably formed to be 10 to 90% of the dimple depth D. Specifically, the reason is that if the height (h) of the protrusion is less than 10% of the dimple depth (D), the golf ball is buried by the coating liquid which coats the surface after injection production. This is because there is difficulty in production.

Since the width of the protruding portion of the side portion 12 in the dimple 10 may exist at least one side of the side portion 12 in the dimple 10, the total inclination direction width W1 of the protruding portion is 10 to the length of the inclined surface length d of the dimple. It is preferable to form 90%.

Specifically, the reason is that when the inclined surface width W1 of the protrusion is smaller than 10% of the length d of the inclined surface of the dimple, it can be extinguished by the surface coating liquid of the golf ball, and when larger than 90%, it is similar to the side of the dimple. This is because the control of the air flow is not easy.

As shown in FIGS. 8 to 15, the protrusion of the present embodiment may have a plurality of convex protrusions, and a plurality of semi-circular protrusions 21 and 23, a plurality of triangular protrusions 22, and a bent portion 24a at an upper end thereof. The rectangular protrusions 24 may be formed in various ways, such as the protrusions 25 having the concave grooves 25a formed on the upper ends thereof.

A plurality of such protrusions may be formed or mixed to further control the flow of air during flight of the golf ball. Therefore, the lift during flight of the golf ball is improved, the flying distance can be further increased.

In addition, various types of protrusions integrally forming convex circular edges in the dimple inner side portion in the horizontal, oblique and longitudinal directions are usually formed perpendicular to the dimple centerline or have a predetermined side angle inclined outward. To form.

However, in this embodiment, the material of the cover surrounding the inner core of the golf ball and the mantle layer uses a soft urethane material and other synthetic resins. In addition, due to the development of the deodorant for leaving the golf ball in the golf ball mold and the development of the coating technology of the mold surface of the golf ball, the dimple side structure of the present embodiment does not have to have a protrusion side angle perpendicular or outward from the dimple centerline. do.

Therefore, in this embodiment, the golf ball can be given more lift force by having the side angle of the protrusion perpendicular to the center line of the dimple or inclined to the inner side rather than the outer side.

As shown in FIG. 16, the conventional dimple inner structure has a bottom portion 11 at the side portion 12 in the dimple 10 along an outer line having an inclination angle α with respect to a parallel line parallel to the centerline of the dimple 10. It is a dimple inner structure having protrusions 13 of various shapes in contact with each other.

As shown in Figs. 17 and 18, in this embodiment, the inclined surface of the protrusion 26 inclined at a predetermined inner angle β with respect to the parallel line C1 parallel to the dimple center line C is the dimple 10. It is formed in the side part 12. In particular, the cabinet β is more preferably formed at 2 to 5 degrees to be suitable for removing the mold during injection production.

Accordingly, the protrusion 26 of the dimple side portion 12 which is subjected to airy resistance in the lower surface of the flying golf ball and allows more air to flow in the upper surface, thereby improving the lifting force of the golf ball. It has an inclined surface and is integrally formed.

As shown in FIG. 19 and FIG. 20, the curved protrusion part 20a according to the present embodiment is formed with the inclination of the inclined surface up and down between the upper end and the lower end of the side part 12 of the dimple 10. Therefore, the curved protrusion 20a can further control the flow of air during the flight of the golf ball, thereby improving the lift force during the flight of the golf ball, thereby increasing the flying distance further.

As shown in Figs. 21A to 25 and 27 to 32, the protruding portions of the present embodiment include a triangular or various types of edge bands formed on the side portions 12 in the dimple 10, and are formed at equal intervals around the side portions. The protrusions of the mold and the mixture can be formed.

In addition, the protrusions include vertical protrusions, such as rectangular protrusions 40a and trapezoidal protrusions 40b, which are formed at equal intervals around the side portions, geared protrusions 41, circular protrusions 42, and rhombic protrusions 43. ), A plurality of partitions may be formed in the shape of at least one of a circular edged protrusion 44, a mixed protrusion 45 and 46 in which vertical and horizontal shapes are mixed, a diagonal protrusion and a polygonal protrusion.

In addition, the dimple side support pillar of the vertical, saw blade, circular or polygonal structure present in the dimple side portion may be used in parallel with the vertical or horizontal semi-circle or polygonal dimple side pillar portion.

As shown in Figs. 21A to 25, the protrusions are in the form of vertical side protrusions, and the cross-sectional shape also shows their various forms, and Fig. 25 is a three-dimensional view thereof. Particularly, the side projections of FIG. 25 (a) are integrally formed at the bottom of the bottom at the bottom thereof to coincide with the dimples at the top, but in FIGS. 25 (b) and (c), they protrude downward from the top of the dimples at a predetermined interval. In the case of being separated from the bottom in the state, it is possible to be used integrally in parallel during the manufacturing process.

 As shown in FIG. 26, the golf ball having the dimple inner structure of the present embodiment is subjected to a lot of resistance of air T2 at the lower surface of the ball when the golf ball is flying by the shape of the various protrusions. More air (T1) flows in the plane, therefore, the lifting force of the golf ball can be improved to increase the flying distance of the golf ball.

Hereinafter, with reference to the accompanying drawings will be described in detail another preferred embodiment of the present invention.

33 is a block diagram showing a groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention, Figure 34 is a cross-sectional view showing a groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention.

35 is a diagram illustrating a plurality of grooves of the dimple internal structure of the golf ball according to another embodiment of the present invention, and FIG. 36 is a plurality of circular grooves of the dimple internal structure of the golf ball according to another embodiment of the present invention. 37 is a cross-sectional view showing another example of the circular groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention.

38 is a block diagram illustrating a plurality of rectangular grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention, and FIG. 39 is a plurality of quadrangles of the dimple inner structure of the golf ball according to another embodiment of the present invention. It is sectional drawing which shows a shape groove part.

40 is a block diagram showing a plurality of triangular grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention, Figure 41 is a plurality of triangles of the dimple inner structure of the golf ball according to another embodiment of the present invention It is sectional drawing which shows an upper groove part.

FIG. 42 is a block diagram illustrating a rectangular division groove of a dimple internal structure of a golf ball according to another embodiment of the present invention, and FIG. 43 is a rectangular division groove of a dimple internal structure of a golf ball according to another embodiment of the present invention. It is sectional drawing which shows a part.

44 is a block diagram showing a plurality of rectangular divided grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention, Figure 45 is a plurality of dimple inner structure of the golf ball according to another embodiment of the present invention It is sectional drawing which shows a rectangular division groove part.

46 is a cross-sectional view illustrating various groove portions of the dimple inner structure of the golf ball according to another embodiment of the present invention, and FIG. 47 is a block diagram illustrating a circular divided groove portion of the dimple internal structure of the golf ball according to another embodiment of the present invention. 48 is a cross-sectional view illustrating a circular dividing groove of a dimple inner structure of a golf ball according to another embodiment of the present invention.

49 is a block diagram illustrating a polygonal dividing groove of a dimple internal structure of a golf ball according to another embodiment of the present invention, and FIG. 50 is a circular rim groove of a dimple internal structure of a golf ball according to another embodiment of the present invention. It is a block diagram.

FIG. 51 is a block diagram illustrating a mixed division groove of a dimple internal structure of a golf ball according to another embodiment of the present invention, and FIG. 52 illustrates a mixed division groove of a dimple internal structure of a golf ball according to another embodiment of the present invention. It is a cross section.

33 and 34, the dimple inner structure of the golf ball of this embodiment has a plurality of concave dimples 10 are formed in the outer peripheral portion of the golf ball, the side portion of the dimple (10) 12) The groove part 30 is integrally formed in the rim shape around it.

Like the protrusion 20, the groove 30 of the side part 12 also generates lift by controlling the flow of air during the flight of the golf ball, thereby improving the flying distance of the golf ball.

In addition, it can be noted that the shape of the concave groove portion opposite to the protrusion of the dimple side portion is the same as the curvature of the dimple side portion, which can help to improve the lifting force of the golf ball.

What defines the depth d1 of the groove part of a side part with respect to the dimple depth D differs in the dish type with small inclination and the fan type with large inclination, even if the inclined surface length d is the same depth, respectively.

Therefore, it is preferable that the depth d1 of the groove portion of the side portion is based on the dimple depth D, and the inclined surface width W2 of the groove portion of the side portion is represented based on the inclined surface length d of the dimple.

Therefore, in the dimple internal structure, the depth d1 of the groove part of the side part is preferably formed to be 10 to 90% of the dimple depth D. Specifically, the reason is that if the depth d1 of the groove portion is less than 10% of the dimple depth D, the golf ball is buried by the coating liquid which coats the surface after injection production, and if it is larger than 90%, the dimple is manufactured. Because there is difficulty.

Since the width of the groove portion of the side portion 12 in the dimple 10 may be present in at least one side portion 12 in the dimple 10, the total width W2 of the inclined surface direction of the groove portion is 10 to the length of the inclined surface length d of the dimple. It is preferable to form 90%.

Specifically, the reason is that if the inclined surface width W2 of the groove portion is less than 10% of the inclined surface length d of the dimple, it may be extinguished by the surface coating liquid of the golf ball, and if it is larger than 90%, it is similar to the side portion of the dimple. This is because the control of the air flow is not easy.

Also, in the prior art, as the dimple inner protrusion becomes larger, a valley is formed between each protrusion, and this becomes a natural air line, and it is understood that when the air line is enlarged, a protrusion is made on the inner side of the dimple.

However, it is not a groove formed in the shape of a golf ball because the protrusions present on the side of the dimple are enlarged, and a circular, polygonal, curved, etc. groove is formed on the inner side of the dimple to maximize the lift force due to the rotational force of the golf ball that is hit and fly. It is to form a groove, such as horizontal, vertical, single shape in the dimple side so that the golf ball can have a lot.

As shown in FIG. 20, the center line C1 of the groove part 30 parallel to the center line C of the dimple 10 is shown, and the structure of the groove part 30 of the side part 12 of the dimple 10 is a boundary surface of a groove part. There may be several, in the case of the triangular groove portion there may be a lower boundary line and the upper boundary line.

If there is a vertical line C1 of the groove portion perpendicular to the dimple bottom portion 11, and a horizontal line P1 of the groove portion parallel to the dimple bottom portion 11, the bottom boundary line of the groove portion is formed on the vertical line C1 and the horizontal line P1. The upper boundary line is formed as follows, respectively.

A horizontal bottom boundary line of the groove portion is formed between the dimple side slope and the horizontal line P1 of the dimple bottom portion. Accordingly, the lower boundary line has a predetermined inclination angle γ with respect to the horizontal line P1.

In addition, the upper boundary line has a predetermined inclination angle θ based on the vertical line C1. Therefore, the upper boundary line may be integrally formed up to a state parallel to the dimple bottom portion horizontal line P1 within the dimple side inclination angle.

In particular, it is more preferable that the inclination angle θ of the upper boundary line is formed at 2 to 5 degrees so as to be suitable for removing the mold during injection production.

In addition, the concave groove 30 is also present in the rim band shape on the side surface 12 of the dimple 10 of the golf ball, the upper air flow to the golf ball flying in the reverse direction of the golf ball flying with lifting force The lower air flow can be made faster, thereby controlling the lower air.

Therefore, similarly to the edge of the protrusion, the groove 30 in the form of an edge band shown in FIGS. 33 and 34 has the same effect, and therefore, is included in the same invention.

35 to 41, the groove portion of the present embodiment can be formed with a plurality of concave recesses, a plurality of semi-circular groove portion 31, 32, a plurality of rectangular groove portion 33, a plurality of triangular groove portion 34 ) May be variously formed.

These grooves may be formed or mixed in plurality to further control the flow of air during the flight, thereby improving the lift force during the flight of the golf ball to further increase the flying distance.

And, the air grooves of the protruding edges have prior art, so that the edges of the grooves are integrally inserted into the dimple side, but the edges of the grooves can control the generation of lift by forming the groove edges at regular intervals. do.

In addition, in the protruding side edges, the height and width of the edges are applied flexibly to increase the lift value for advanced, intermediate, and beginners.The size of the edge can be adjusted according to the golfer's hitting shape according to swing speed and impact angle. Will be.

The groove portion of the dimple side portion formed integrally with the dimple side is a dimple side groove which is perpendicular to the dimple bottom surface in the case where it is parallel to the dimple bottom portion. It may be formed perpendicular to the side.

As shown in Figs. 35 to 41, the dimples are forced to resist air sideways avoiding dimples rather than the dimple acting to improve the direction of lift on the side of the golf ball that rotates in the opposite direction of travel. The formation of grooves and protrusions perpendicular to the side of the dimple to reduce the occurrence of lift, and to reduce the side resistance can have another effect of improving the distance to the golf ball.

42 to 52, the groove portion of the present embodiment is a divided or mixed groove formed in the triangular or various forms of the rim band on the side portion 12 in the dimple 10, formed at equal intervals around the side portion. The addition can be formed.

In addition, the groove portion has a horizontal groove portion 50, a vertical groove portion 51, a circular groove portion 52, a rhombus groove portion 53, and a circular rim groove portion 54 which are divided into equal intervals around the side portion. In addition, a plurality of divided grooves 55 and 56 in which the vertical type and the horizontal type are mixed may be formed in a plurality of shapes in at least one of diagonal lines and polygons.

Thus, as with the dimple side projections, the grooves may be used vertically, horizontally, alone or in parallel. Like the side projections, it is possible to further increase the flying distance by improving the lifting force of the golf ball in flight.

Hereinafter, another preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

53 is a block diagram showing the internal structure of the dimple of a golf ball according to another embodiment of the present invention, Figure 54 is a cross-sectional view showing the internal structure of the dimple of a golf ball according to another embodiment of the present invention.

53 and 54, the dimple inner structure of the golf ball of this embodiment is a mixed type in which the protrusions 61 and the grooves 62 are formed at equal intervals around the side portions 12 of all or part of the dimples. Structure.

In addition, the shapes and effects of the protrusions 61 and the grooves 62 of the present embodiment are the same as those of the above embodiments.

The present invention described above can be embodied in many other forms without departing from the spirit or main features thereof. Therefore, the above embodiments are merely examples in all respects and should not be interpreted limitedly.

1 is a cross-sectional view showing the internal structure of a hemispherical dimple of a conventional golf ball.

Figure 2 is a cross-sectional view showing the inner structure of a plate-shaped dimple of a conventional golf ball.

3 is a cross-sectional view showing the internal structure of a fan-shaped dimple of a conventional golf ball.

Figure 4 is a cross-sectional view showing the internal structure of the stepped protrusion dimple of the conventional golf ball.

Figure 5 is a state diagram showing a flying state of a golf ball having a conventional dimple internal structure.

Figure 6 is a block diagram showing the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention.

Figure 7 is a cross-sectional view showing the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention.

Figure 8 is a block diagram showing a plurality of protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

9 is a cross-sectional view showing a plurality of protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

10 is a block diagram showing a plurality of different protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

11 is a cross-sectional view showing a plurality of different protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

12 is a block diagram showing a plurality of further protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

Figure 13 is a cross-sectional view showing a plurality of further protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

Figure 14 is a block diagram showing a plurality of mixing protrusions of the dimple inner structure of the golf ball according to an embodiment of the present invention.

15 is a cross-sectional view showing a plurality of mixing protrusions of the dimple inner structure of a golf ball according to an embodiment of the present invention.

Fig. 16 is a sectional view showing a conventional protrusion of the dimple inner structure of a golf ball.

Figure 17 is a block diagram showing another protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention.

18 is a cross-sectional view showing another protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention.

19 is a block diagram showing another example of the protrusion of the dimple internal structure of the golf ball according to an embodiment of the present invention.

20 is a cross-sectional view showing another example of the protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention.

Figure 21a is a block diagram showing a rectangular division protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention.

21B is a cross-sectional view illustrating a quadrangular divided protrusion of a dimple inner structure of a golf ball according to an embodiment of the present invention.

Figure 22a is a block diagram showing a trapezoidal divided projection of the internal structure of the dimple of a golf ball according to an embodiment of the present invention.

Figure 22b is a cross-sectional view showing a trapezoidal divided projection of the dimple inner structure of the golf ball according to an embodiment of the present invention.

Figure 23 is a block diagram showing a gear-shaped split protrusion of the dimple internal structure of a golf ball according to an embodiment of the present invention.

24 is a cross-sectional view showing a gear-shaped split protrusion of a dimple inner structure of a golf ball according to an embodiment of the present invention.

25 is a perspective view illustrating various protrusions of a dimple inner structure of a golf ball according to an embodiment of the present invention.

Figure 26 is a state diagram showing the flight state of the golf ball having a dimple internal structure of the golf ball according to an embodiment of the present invention.

Figure 27 is a block diagram showing a circular dividing protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention.

28 is a cross-sectional view showing a circular dividing protrusion of the dimple internal structure of a golf ball according to an embodiment of the present invention.

29 is a block diagram showing a rectangular division protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention.

30 is a block diagram showing a circular rim-shaped protrusion of the internal structure of the dimple of a golf ball according to an embodiment of the present invention.

31 is a block diagram showing a mixed division protrusion of the dimple inner structure of the golf ball according to an embodiment of the present invention.

32 is a cross-sectional view showing a mixed division protrusion of the dimple inner structure of a golf ball according to an embodiment of the present invention.

33 is a block diagram showing a groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention.

34 is a cross-sectional view showing a groove of a dimple inner structure of a golf ball according to another embodiment of the present invention.

35 is a diagram illustrating a plurality of grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention.

36 is a cross-sectional view illustrating a plurality of circular grooves of a dimple inner structure of a golf ball according to another embodiment of the present invention.

37 is a cross-sectional view showing another example of the circular groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention.

38 is a block diagram showing a plurality of rectangular grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention.

39 is a cross-sectional view showing a plurality of rectangular grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention.

40 is a block diagram showing a plurality of triangular grooves of the dimple inner structure of the golf ball according to another embodiment of the present invention.

41 is a cross-sectional view showing a plurality of triangular grooves of the dimple inner structure of a golf ball according to another embodiment of the present invention.

42 is a block diagram showing a rectangular divided groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention.

43 is a cross-sectional view illustrating a quadrangular divided groove of a dimple inner structure of a golf ball according to another embodiment of the present invention.

44 is a block diagram showing a plurality of rectangular divided groove portions of the dimple inner structure of the golf ball according to another embodiment of the present invention.

45 is a cross-sectional view showing a plurality of rectangular divided groove portions of the dimple inner structure of the golf ball according to another embodiment of the present invention.

46 is a cross-sectional view showing various groove portions of the dimple inner structure of the golf ball according to another embodiment of the present invention.

47 is a block diagram showing a circular dividing groove portion of the dimple inner structure of the golf ball according to another embodiment of the present invention.

48 is a cross-sectional view illustrating a circular dividing groove of a dimple inner structure of a golf ball according to another embodiment of the present invention.

49 is a view illustrating a polygonal dividing groove of a dimple inner structure of a golf ball according to another embodiment of the present invention.

50 is a block diagram showing a circular rim groove of the dimple inner structure of a golf ball according to another embodiment of the present invention.

51 is a block diagram showing a mixed division groove of the dimple inner structure of the golf ball according to another embodiment of the present invention.

52 is a cross-sectional view showing a mixed division groove of a dimple inner structure of a golf ball according to another embodiment of the present invention.

53 is a block diagram showing the internal structure of the dimple of a golf ball according to another embodiment of the present invention.

54 is a cross-sectional view illustrating a dimple internal structure of a golf ball according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: dimple 11: bottom

12: side portion 20: protrusion

30: groove

Claims (6)

In the dimple internal structure of the golf ball, A plurality of concave dimples are formed at an outer circumference of the golf ball, and at least one of a protrusion and a groove is formed at a side surface of the whole or part of the dimples. The method of claim 1, The projecting portion or the groove portion is dimple inner structure of the golf ball, characterized in that formed integrally along the side portion circumference or formed around the side portion at equal intervals. The method of claim 1, The width | variety of the inclined surface direction of the said protrusion part or the groove part is formed in the dimple internal structure of the golf ball characterized by the above-mentioned. The method of claim 1, The height of the protruding portion or the depth of the groove portion is a dimple internal structure of the golf ball, characterized in that formed in 10 to 90% of the depth of the dimple. The method of claim 1, A cross-sectional shape of the protruding portion or the groove portion is a dimple internal structure of a golf ball, characterized in that formed in at least one of a circle and a polygon. The method of claim 1, The protruding portion or the groove portion, the dimple inner structure of the golf ball, characterized in that the inclination of the inclined surface is formed between the upper end and the lower end of the side portion.

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