KR100774431B1 - Inside structure of dimple for golf ball - Google Patents

Abstract

An internal structure of a dimple for a golf ball is provided to enlarge a contact area of an impact face in hitting the ball with a golf club head, to increase repellent force of the golf ball, and to reduce deformation of a shape of the golf ball contacted with the head of the golf club. In an internal structure of a dimple(110) for a golf ball, plural recessed dimples are formed on the outer peripheral surface of the golf ball. Plural protruded units are projected on each side support wall(111) of all or some dimples and arranged at regular intervals. The width sum of the protruded units is less than the width sum of the side support walls. The height of the protruded unit is same as or a half of the depth of the dimple.

Description

Inside structure of dimple for golf ball}

1 is a plan view showing an example of the internal structure of the dimple of a golf ball according to a first embodiment of the present invention.

2 is a cross-sectional view showing an example of the internal structure of the dimple of a golf ball according to the first embodiment of the present invention.

3 is a plan view showing another example of the internal structure of the dimple of the golf ball according to the first embodiment of the present invention.

4 is a cross-sectional view showing another example of the internal structure of the dimple of a golf ball according to the first embodiment of the present invention.

5 is a plan view showing still another example of the internal structure of the dimple of the golf ball according to the first embodiment of the present invention.

6 is a cross-sectional view showing still another example of the internal structure of the dimple of a golf ball according to the first embodiment of the present invention.

7 is a configuration diagram showing a flight state of the golf ball according to the first embodiment of the present invention.

8 is a cross-sectional view showing an example of the internal structure of the dimple of a golf ball according to the second embodiment of the present invention.

9A is a perspective view showing an example of a protrusion of an internal structure of a dimple of a golf ball according to a second embodiment of the present invention.
Fig. 9B is a sectional view showing an example of the protrusion of the dimple inner structure of the golf ball according to the second embodiment of the present invention.

10 is a cross-sectional view showing another example of the dimple internal structure of the golf ball according to the second embodiment of the present invention.

Fig. 11 is a perspective view showing a protrusion of another example of the dimple inner structure of the golf ball according to the second embodiment of the present invention.

12 is a plan view showing an example of the internal structure of the dimple of the golf ball according to the third embodiment of the present invention.

13 is a cross-sectional view showing an example of the internal structure of the dimple of a golf ball according to the third embodiment of the present invention.

14 is a plan view showing another example of the internal structure of the dimple of the golf ball according to the third embodiment of the present invention.

Fig. 15 is a sectional view showing another example of the dimple internal structure of the golf ball according to the third embodiment of the present invention.

16 is a plan view showing still another example of the internal structure of the dimple of a golf ball according to the third embodiment of the present invention;

Fig. 17 is a sectional view showing still another example of the dimple internal structure of the golf ball according to the third embodiment of the present invention.

18 is a configuration diagram showing a flying state of the golf ball according to a third embodiment of the present invention.

19 is a plan view showing an example of the internal structure of the dimple of a golf ball according to the fourth embodiment of the present invention.

20 is a plan view showing another example of the internal structure of the dimple of the golf ball according to the fourth embodiment of the present invention.

Fig. 21 is a plan view showing still another example of the dimple internal structure of the golf ball according to the fourth embodiment of the present invention.

Fig. 22 is a plan view showing an example of an internal structure of a dimple of a golf ball according to the fifth embodiment of the present invention.

Fig. 23 is a plan view showing another example of the internal structure of the dimple of a golf ball according to the fifth embodiment of the present invention.

24 is a plan view showing an example of the internal structure of the dimple of the golf ball according to the sixth embodiment of the present invention.

25 is a configuration diagram showing a flying state of a golf ball according to an example of the sixth embodiment of the present invention.

Fig. 26 is a plan view showing another example of the internal structure of the dimple of a golf ball according to the sixth embodiment of the present invention.

Fig. 27 is a block diagram showing a flying state of a golf ball according to another example of the sixth embodiment of the present invention.

28 is a cross-sectional view showing an example of a dimple internal structure of a conventional golf ball.

29 is a plan view illustrating an example of a dimple internal structure of a conventional golf ball.

30 is another plan view showing an example of a dimple internal structure of a conventional golf ball.

Fig. 31 is a plan view showing another example of the dimple internal structure of a conventional golf ball.

32 is a cross-sectional view showing another example of a dimple internal structure of a conventional golf ball.

33 is a plan view showing still another example of the internal structure of the dimple of a conventional golf ball.

34 is a cross-sectional view showing still another example of the dimple internal structure of a conventional golf ball.

36 is a plan view showing still another example of the internal structure of the dimple of a conventional golf ball.

37 is a block diagram showing a flying state of a conventional golf ball.

38 is a block diagram showing a hit state of the golf ball and the golf club.

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

100: golf ball 110: dimple

111: side support wall 150: protrusion

The present invention relates to an internal structure of a dimple of a golf ball, and more particularly, to limit the height and the area of the protrusion formed in the dimple of the golf ball to predetermined dimensions, thereby ensuring excellent performance and flying distance when hitting various golf club heads. In addition, it is possible to increase the contact area of the impact surface when the golf club head is hit, and at the same time increase the resilience of the golf ball, and reduce the shape deformation of the golf ball in contact with the head of the golf club. The dimple inner structure of a golf ball.

In general, golf balls having a large number of dimples are required to have a small dimple cross-sectional area due to the defined ball surface, and golf balls having such small dimple cross-sections are blown to a high trajectory parabola.

The reason is that the golf club hitting the golf ball is formed to have an angle, and the golf ball having a predetermined angle hits the golf ball while digging into the lower surface of the golf ball while making a circular motion of the swing. It is hit while rotating to the right.

At this time, the lower surface of the golf ball pushes the air in the advancing direction by the dimple, and the upper surface of the golf ball pushes the air in the opposite direction by the dimple and the lift is generated by the difference between the upper and lower parts. You will have a lot.

It is understood that a golf ball having a small cross-sectional area of a dimple, that is, a golf ball having a large number of dimples, is possible because the air flow of the upper surface and the lower surface causes a large number of dimples to rotate and act on the air flow in various places.

On the other hand, a golf ball having a small number of dimples has a large dimple cross-sectional area due to the surface area according to the prescribed diameter of the golf ball.

These dimple cross-sectional golf balls are known to have a stable low trajectory flight.

This is a dimple with a small cross-sectional area that slows the air flow in the lower part and slows the air flow in the upper part, and makes a difference in the upper and lower air flows of the golf ball that rotates. It is understood that the lift generated in many of these cases is large.

If so, it would be necessary to simultaneously have the two effects on each dimple cross-sectional area in order to produce the ideal ballistic golf ball.

The dimple's cross-sectional area decreases the distance of the golf ball, even if the flight of the golf ball rises high, and it is difficult to settle to the target point by the wind flowing over the air. There was a problem that it is difficult to stop the golf ball at the target point by rolling a lot.

In order to solve this problem, it is possible to form a protrusion in the inner center of the dimple cross-sectional area, and the appearance of a golf ball having a dimple structure in which the protrusion is integrally enabled.

28 is a cross-sectional view showing an example of the dimple internal structure of a conventional golf ball, FIG. 29 is a plan view showing an example of the dimple internal structure of a conventional golf ball, and FIG. 30 is an example of the dimple internal structure of a conventional golf ball 31 is a plan view showing another example of the dimple internal structure of the conventional golf ball, FIG. 32 is a sectional view showing another example of the dimple internal structure of the conventional golf ball, and FIG. 33 is a conventional golf ball. Fig. 34 is a sectional view showing still another example of the dimple inner structure of the conventional golf ball, and Fig. 36 is another example of the dimple inner structure of the conventional golf ball. It is a top view which shows, FIG. 37 is a block diagram which shows the flying state of the conventional golf ball, and FIG. 38 is a block diagram which shows the hit state of a golf ball and a golf club.

As shown in FIGS. 28 to 30, the protrusion-shaped partitions 210 and 211 existing on the bottom surface of the dimple 200 may increase the initial frontal fracturing effect due to the rotation of the golf ball and the upper and lower dimple air in the traveling direction. One form designed to be easy to lift is present on the bottom.

As shown in FIGS. 31 and 32, the projection-shaped hemisphere 212 existing on the bottom surface of the dimple 200 has the same role and effect as in FIG. 32, and at the same time, the left hook of the golf ball and the right hook of the slice. It can be said that the technology exists to minimize the phenomenon.

As shown in FIGS. 33 and 34, the bottom of the dimple 200, that is, the depth of the dimple of the golf ball, is generally made to a depth of about 0.2 mm, and the dimple cross-sectional area is given by giving a small groove 213 deeper than the conventional normal depth. It is a technology that can control the trajectory of the golf ball by increasing the.

As shown in FIGS. 35 and 36, the stepped side surface 213 on the side of the dimple 200 protrudes stepwise to discharge more air from the bottom in the traveling direction, from the top in the opposite direction of the discharge. By doing so, the lift of the golf ball is helpful, and the air that hits the front is crushed to eliminate the vortex resistance.

However, if there is an air passage 214 in the stepped stepped jaw on the side, when the golf ball proceeds, when viewed from the lower dimple, the stepped domed side wall causes more air action than the conventional dimple side of FIG. 34, thereby minimizing this phenomenon. Air passage 214 is provided for the purpose, and the size of the passage and the width of the side step wall width can be seen that (e + e '+ e ") ≤ (E + E' + E").

This is because the size of the side staircase wall is larger than the size of the air passage, that is, the vortex of the air, that is, the impacted golf ball 300 as shown in Figure 38 is naturally opposed to the direction of travel depending on the angle of the golf club 400 Direction of rotation.

As the golf ball proceeds as shown in FIG. 37, the lift is generated by the vortex generated from the lower dimple and the upper vortex to induce more time to be airborne.

However, if the amount of lift is too large, the air distance cannot be reduced depending on the angle of flight. Therefore, air passages are formed on the side stair walls to reduce the distance. If you can not expect the effect has been a problem.

The present invention has been made in order to solve the above conventional problems, by limiting the height and area of the protrusion formed in the dimple of the golf ball to a predetermined dimension, to ensure excellent performance and flying distance when hitting a variety of golf club heads In addition, it is possible to increase the contact area of the impact surface when the golf club head is hit, and at the same time increase the resilience of the golf ball, and to reduce the shape deformation of the golf ball in contact with the golf club head. It is an object to provide a dimple inner structure of a golf ball.

In order to achieve the above object, the present invention in the dimple internal structure of the golf ball, a plurality of concave dimples 110 is formed in the outer peripheral portion of the golf ball, the side of the dimple 110 of the whole or part The support wall is characterized in that the protrusion is formed protruding.

More preferably, a plurality of the protrusions are formed at the same interval, and the sum of the widths of the protrusions (E1 + E2 + E3) is smaller than the sum of the widths of the side support walls (e1 + e2 + e3). It is characterized by.

More preferably, the protrusions are formed on the side support walls on both sides, and the height of the protrusions is the same or half as the depth D of the dimple.

More preferably, the shape of the protrusion is characterized in that the stepped, separated or inclined form.

More preferably, the shape of the protrusion is characterized in that the length of the upper width (P1) and the lower width (P2) are formed different from each other.

More preferably, the protrusions are formed in plural at equal intervals, and are formed to be inclined at a predetermined angle α in a left or right direction with respect to the diameter of the dimple.

More preferably, the protrusions are formed in plural at equal intervals, and are curved in a left or right direction with respect to the diameter of the dimples.

More preferably, the cross-sectional area S ₂ of the protrusion is smaller than half of the dimple cross-sectional area S ₀ .

More preferably, a plurality of the protrusions are formed at the same interval, the width of the protrusions is formed wider than the width of the side support wall, characterized in that the concave groove is formed between the protrusions.

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

1 is a plan view showing an example of the dimple internal structure of the golf ball according to the first embodiment of the present invention, Figure 2 is a cross-sectional view showing an example of the internal structure of the dimple of the golf ball according to the first embodiment of the present invention, 3 is a plan view showing another example of the dimple internal structure of the golf ball according to the first embodiment of the present invention, Figure 4 is a cross-sectional view showing another example of the dimple internal structure of the golf ball according to the first embodiment of the present invention 5 is a plan view showing still another example of the dimple internal structure of the golf ball according to the first embodiment of the present invention, Figure 6 is yet another of the dimple internal structure of the golf ball according to the first embodiment of the present invention 7 is a sectional view showing an example, and FIG. 7 is a configuration diagram showing a flying state of a golf ball according to the first embodiment of the present invention.

As shown in Figure 1 and 2, the dimple inner structure of the golf ball of the present embodiment, a plurality of protrusions 150 are formed on the side support wall 111 in the dimple 110, the air passage in the conventional golf ball It is formed by the disappeared dimple inner structure.

As described above, the protrusion 150 of the dimple is formed of a protrusion supporting wall, and as shown in FIG. 1, the protrusion 150 becomes a partition wall part of the dimple having a predetermined width E1, E2, and E3.

Therefore, it can be seen that the sum (E1 + E2 + E3) of the width of the protrusion 150 is smaller than the sum (e1 + e2 + e3) of the width of the side support wall 111 therebetween. Can be defined as (E1 + E2 + E3) <(e1 + e2 + e3).

When the side slope or the side support wall is wide in the conventional golf ball, there is a meaning of air passage, but when the air passage is widened, the dimple side becomes, and as shown in FIG. 1, the protrusion 150 of the dimple is formed in the inner space of the dimple. It exists as a partition that partitions a part.

As shown in FIG. 7, in the golf ball that rotates by hitting the golf club and proceeds to fly, the shape of the protrusion 150 such as a partition wall formed in the dimple has a dimple of the conventional golf ball as shown in FIG. 37. In the case where the vortex shape due to is non-ideally large, it is possible to minimize the effect of the vortex caused by the dimple to reduce the occurrence of lift.

In this case, it is necessary to minimize the generation of lifting force, when the number of dimples of golf balls is 400 or more, or when the cross-sectional area of the dimple is large and the cross-sectional area needs to be reduced, the embodiment is necessary to realize the effect of the large cross-section.

In another example of the present embodiment as shown in FIGS. 3 to 6, protrusions 151 and 152 are formed on both side support walls 111 to face each other, and the shape of the protrusion is formed as a stepped protrusion 151. Or is formed of an inclined protrusion 152.

Therefore, by adjusting the amount of vortex of air formed in the dimple, it is possible to apply the embodiment in a suitable state by adjusting the amount of lift to the direction of the wind or the amount of wind in the field, thereby maintaining the optimum flight state.

In addition, it is preferable that the cross-sectional area S ₃ of the protrusion is smaller than half of the dimple cross-sectional area S ₂ .

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

8 is a cross-sectional view showing an example of the dimple internal structure of the golf ball according to the second embodiment of the present invention, Figure 9a is a perspective view showing an example of the internal structure of the dimple of the golf ball according to the second embodiment of the present invention 9B is a cross-sectional view showing a protrusion of an example of the dimple internal structure of the golf ball according to the second embodiment of the present invention, and FIG. 10 is another example of the dimple internal structure of the golf ball according to the second embodiment of the present invention. 11 is a perspective view showing a protruding portion of another example of the dimple internal structure of the golf ball according to the second embodiment of the present invention.

In the present embodiment, the same parts as in the first embodiment are given the same names, and detailed description thereof is omitted.

As shown in FIGS. 8 to 11, the dimple of the present embodiment is formed in two shapes of hemispherical shape and dish shape, and the height of the protrusion 150 formed in the dimple 110 is equal to the depth D of the dimple. Or is formed in half.

In particular, as shown in (a) to (e) of FIG. 9A and (a) to (f) of FIG. 11, the shape of the protrusion 150 is formed in a stepped shape, a separated type, or an inclined shape.

That is, two types of dimples 110 are arranged to have two or more equal angles on both side surfaces of the side support wall 111, so that protrusions 150 are integrally formed, and are half the size of the size of the side portion. It can be formed in various shapes such as length.
In addition, as shown in Figure 9b, there may be more than one protrusion integrally present in the side support wall inside the dimple, the size of the step width (w2) of the protrusion of one side in the width of the upper surface of the dimple The size of less than ¼ of the width w1 of the dimple is appropriate, and if the sum of the step widths w2 of both protrusions is larger than ½ of the dimple width, the bottom of the dimple is formed into the groove portion.
Therefore, it is preferable that the sum of the step heights h of both protrusions is lower than the height H of the dimples. In addition, the diagonal stepped width w3 of the one protruding portion is preferably formed to have a size smaller than ¼ of the width w1 of the dimple, similarly to the stepped width w2 of the one protruding portion.

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

12 is a plan view illustrating an internal structure of a dimple of a golf ball according to a third embodiment of the present invention, and FIG. 13 is a cross-sectional view illustrating an internal structure of a dimple of a golf ball according to a third embodiment of the present invention; 14 is a plan view showing another example of the dimple internal structure of the golf ball according to the third embodiment of the present invention, Figure 15 is a cross-sectional view showing another example of the dimple internal structure of the golf ball according to the third embodiment of the present invention 16 is a plan view showing still another example of the dimple internal structure of the golf ball according to the third embodiment of the present invention, Figure 17 is another view of the dimple internal structure of the golf ball according to the third embodiment of the present invention 18 is a sectional view showing an example, and FIG. 18 is a configuration diagram showing a flying state of a golf ball according to a third embodiment of the present invention.

In this embodiment, the same parts as in the second embodiment are given the same names, and detailed description thereof is omitted.

As shown in Figs. 12 to 17, in the dimple inner structure of the golf ball of the present embodiment, the lengths of the upper end width P1 and the lower end width P2 of the protrusion are different from each other.

For example, a triangular protrusion 153 formed in a triangular planar shape, an inverted triangular protrusion 154 formed in an inverted triangle, a diamond-shaped protrusion 155 formed in a lozenge shape, and the like may be implemented. Corresponds to the protrusion of the example.

The protrusion of the present embodiment is to vary the width of the protrusion, so that the air flow of the golf ball can be controlled by the width of the protrusion.

Such dimple protrusions 153, 154, and 155 are shown in FIG. 18, when the left turn spin is taken when viewed from the top of the flying golf ball, the reverse flow T4 on the left side sends the wind back, and the vortex on the right side T3. In this case, the lift force moves the ball to the left, creating a hooked pitch.

In this case, the internal structure of the dimple has a hook as described above when the side support wall is larger than the air passage, even if narrow air passages are formed in the two types of protrusions or the stepped jaw portions, as shown in FIGS. 33 to 36. The shape will be large.

Therefore, when the side support wall is smaller than the size of the air passage, as in the flight state of the golf ball shown in Figure 18 of the present embodiment, the progress of the golf ball can be minimized, it will be easy to send the golf ball to a safe point.

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

19 is a plan view showing an example of the dimple internal structure of the golf ball according to the fourth embodiment of the present invention, Figure 20 is a plan view showing another example of the dimple internal structure of the golf ball according to the fourth embodiment of the present invention 21 is a plan view showing still another example of the internal structure of the dimple of a golf ball according to the fourth embodiment of the present invention.

In the present embodiment, the same parts as in the third embodiment are given the same names, and detailed description thereof is omitted.

As shown in FIGS. 19 to 21, the dimple inner structure of the golf ball of this embodiment has a plurality of protrusions formed at equal intervals, and has a predetermined angle α in the left or right direction with respect to the diameter line passing through the center of the dimple. It is formed with obliquely formed oblique protrusions 156 and 157.

That is, the projections from the centerline passing through the center of the dimple are positioned diagonally in the left or right direction from the center of the dimple like a paper weave, which is an improved embodiment for forming a vortex in the dimple by the projection.

The flight state of the golf ball of the present embodiment is a protrusion formed in an oblique shape to fit the swing type of beginners having an irregular swing form in a form not seen in the above embodiment.

A golfer hitting a golf ball can't always hit correctly at impact and can hit left or right instead of up and down. In this case, the first golf ball that is hit is the one that contracts and expands the golf ball by the impact applied to the blow and rotates in the direction of impact at the time of the hit. Takes place at °.

Therefore, the air spreading up, down, left, and right is relatively straight, or the air colliding with the front of the golf ball is crushed and blown away by the Reynolds theory. Large lift force will work.

Therefore, the golf ball is advanced in the direction of lift, and the correct golf ball has more time to collect and can be sent far away.

By the way, the golf ball rotating in the left or right direction is bent from the end of the contraction and expansion in the rotation direction. In this case, the golf ball has a groove that is relatively accurate to the dimple of the golf ball, and a groove wall or a pillar wall of the dimple of the golf ball that is incorrectly fitted.

This embodiment can be said to be an embodiment in which the golf ball can be selectively used according to the swing habits of the golfer by all the partitions formed on the side support wall and the dimple bottom in a diagonal direction from the center to the left or right direction.

In the conventional golf ball and the above embodiment, if it is easy to cope with the lift-up phenomenon to be started in the vicinity of the process of the golf ball contraction and expansion in the strong impact in the normal hit, this embodiment strongly controls the vortex that the left and right scan amount is large It is an ideal embodiment for reducing a smaller amount of left and right deviations.

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

22 is a plan view showing an example of the dimple internal structure of the golf ball according to the fifth embodiment of the present invention, Figure 23 is a plan view showing another example of the dimple internal structure of the golf ball according to the fifth embodiment of the present invention .

In the present embodiment, the same parts as in the fourth embodiment are given the same names, and detailed description thereof is omitted.

As shown in Figs. 22 to 23, a plurality of protrusions of the present embodiment are formed at equal intervals, and the diagonal wall surface protrusions 161 and 162 formed with a width of the protrusions wider than the width of the side support walls, and the side support walls between the protrusions. An oblique concave groove of 111 is formed.

The recessed groove formed by the side support wall is formed to be inclined at a predetermined angle α with respect to the center line in the left direction or the right direction as in the fourth embodiment.

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

24 is a plan view showing an example of the internal structure of the dimple of the golf ball according to the sixth embodiment of the present invention, Figure 25 is a block diagram showing a flight state of the golf ball according to an example of the sixth embodiment of the present invention, 26 is a plan view showing another example of the internal structure of the dimple of the golf ball according to the sixth embodiment of the present invention, and FIG. 27 is a block diagram showing a flight state of the golf ball according to another example of the sixth embodiment of the present invention.

In the present embodiment, the same parts as in the fourth embodiment are given the same names, and detailed description thereof is omitted.

As shown in Figs. 24 to 27, a plurality of protrusions of the present embodiment are formed at the same interval, and are curved protrusions 163 and 164 curved in the left or right direction with respect to the diameter of the dimple.

In the plan view of the flying golf ball in the sky, if the golf ball making the right turn flies to the right, at this time, if there are side grooves, protruding supports, or projections or grooves on the bottom or the bottom of the dimple in the form of an oblique line to the right Collect more air into the dimple than if it is slanted to the left.

That is, in this case, a large amount of air will be spread out of the golf ball, and the lift difference between the right side and the left side will be large. This will cause the golf ball to go to the right quickly and not reach the target exactly.

Therefore, as shown in FIG. 25, if the protrusion 163 is formed in a curved shape, a small amount of lifting force is generated due to a small amount of air inflow into the dimple, thereby enabling a smaller target deviation.

As described above, grooves or protrusion walls are formed integrally with the right side or the left side of the dimple, the side and the bottom of the dimple to be selected according to the swing habit of the golfer.

In addition, as shown in FIGS. 26 and 27, the lateral protrusions in the dimple are turned to the right and to the left. The golf ball proceeds while spinning to the right. In this case, the protrusion 164 in the dimple will send out the wind that hits the most, and the wind that hits less than the protrusion 164, but the golf ball rotates to the right, so the wind that hits it out also.

That is, the golf ball that rotates to the right while moving forward, as shown in the dimple on the side that generates lift, drives the inside of the dimple and strongly pushes it back so that it can play the role of a protrusion that has spread to the left diagonal so that the lift difference cannot be increased. If the golf ball had turned left, it would have been driven into the dimple of much air by the protrusion 164 of the dimple, and it would be discharged strongly backward by the protrusion to increase the difference in lift.

According to this phenomenon, this embodiment can induce a change in the direction of the golf ball less than the rotation of the golf ball by the groove or support wall or the partition formed by the left or right diagonal line is very useful for various golfers do.

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.

As described above, the present invention is limited to the height and the area of the protrusion formed in the dimple of the golf ball to a predetermined dimension, thereby providing an effect that can ensure excellent performance and flying distance when hitting a variety of golf club heads.

In addition, it is possible to increase the contact area of the impact surface at the time of hitting the golf club head, increase the resilience of the golf ball, and provide the effect of reducing the shape deformation of the golf ball in contact with the head of the golf club. do.

In addition, by changing the height and width of the protrusions in the dimple provides an effect that can improve the distance and lift.

In addition, the protrusions may be formed in a diagonal or curved shape to adapt to the taste of various golfers.

Claims (9)

In the dimple internal structure of the golf ball, A plurality of dimples 110 of concave shape is formed on the outer circumference of the golf ball, the dimple inner structure of the golf ball, characterized in that the protrusion is formed on the side support wall of the whole or part of the dimple 110. The method of claim 1, A plurality of protrusions are formed at equal intervals, and the sum of the widths of the protrusions (E1 + E2 + E3) is smaller than the sum of the widths of the side support walls (e1 + e2 + e3). Dimple internal structure of a golf ball. The method of claim 1, The protrusions are respectively formed on the side support walls on both sides, the dimple inner structure of the golf ball, characterized in that the height of the protrusions are formed equal to or half the depth (D) of the dimple. The method of claim 1, The protrusion is dimple internal structure of the golf ball, characterized in that formed in a stepped, separated or inclined form. The method of claim 1, The protrusion has a dimple internal structure of a golf ball, characterized in that the length of the upper width (P1) and the lower width (P2) are formed different from each other. The method of claim 1, The plurality of protrusions are formed at the same interval, the dimple internal structure of the golf ball, characterized in that formed inclined at a predetermined angle (α) in the left or right direction with respect to the diameter of the dimple. The method of claim 1, The protrusions are formed in plural at the same interval, the dimple internal structure of the golf ball, characterized in that the curved to the left or right direction with respect to the diameter of the dimple. The method of claim 1, Cross section area (S ₃ ) of the protrusion is a dimple internal structure of the golf ball, characterized in that formed less than half of the dimple cross-sectional area (S ₂ ). The method of claim 1, A plurality of the protrusions are formed at the same interval, the width of the protrusion is formed wider than the width of the side support wall, the dimple inner structure of the golf ball, characterized in that the diagonal grooves are formed between the protrusions.

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