KR100774432B1 - Arrangement structure of dimple for golf ball - Google Patents

Abstract

A dimple arrangement structure of a golf ball is provided to decrease drag and to increase lift by making the arrangement and size of dimples symmetrical in six parts formed by dividing dimple groups of six hexagonal zones. In a dimple arrangement structure of a golf ball, the surface of the golf ball where dimples(10) are formed is split into six hexagonal zones by virtual parting lines and eight triangular zones formed between the hexagonal zones, respectively. Dimple groups are arranged in each zone. First to sixth dimple groups(P3,P4,P5) are arranged in the hexagonal zones. The first to fourth dimple groups are continuously aligned in the vertical direction of a center line corresponding to the outer diameter of one dimple group. The fifth and sixth dimple groups are arranged at both sides of the second dimple group.

Description

Arrangement structure of dimple for golf ball}

1 is a block diagram showing a dimple arrangement structure of a conventional golf ball.

Figure 2 is a block diagram showing a hexagonal region of the dimple arrangement of a conventional golf ball.

Figure 3 is a schematic diagram showing a dimple arrangement structure of a golf ball according to an embodiment of the present invention.

Figure 4 is a schematic diagram showing a hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention.

5 is a schematic view showing each zone of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 6 is a development view showing a dimple arrangement structure of a golf ball according to an embodiment of the present invention.

Figure 7 is a plan view showing a hexagonal zone of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 8 is an enlarged view showing a hexagonal zone of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 9 is an enlarged view showing the dimple arrangement of the hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 10 is another enlarged view showing the dimple arrangement of the hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 11 is a plan view showing a dimple group of hexagonal zones of the dimple arrangement of the golf ball according to an embodiment of the present invention.

12 is a plan view showing a contact portion of the dimple group of the hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 13 is another plan view showing the contact portion of the dimple group of the hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention.

Figure 14 is a plan view showing a golf ball dimple arrangement structure of the golf ball according to an embodiment of the present invention.

Figure 15 is a block diagram showing a golf ball dimple arrangement structure of the golf ball according to an embodiment of the present invention.

Figure 16 is a development view showing a group of dimples in the hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention.

17 is a development view showing a group of dimples in a hexagonal region of a dimple arrangement of a golf ball according to another embodiment of the present invention.

18 is a perspective view of a dimple group of hexagonal sections of a dimple arrangement of a golf ball according to another embodiment of the present invention adjacent to a substantially triangular section;

19 is a development view showing a group of dimples in a hexagonal region of a dimple arrangement of a golf ball according to another embodiment of the present invention.

20 is an exemplary view showing various dimple groups of hexagonal regions of the dimple arrangement of the golf ball of the present invention.

FIG. 21 is a development view showing a group of dimples in a hexagonal region of a dimple arrangement of a golf ball according to another embodiment of the present invention; FIG.

Figure 22 is an exemplary view showing a variety of dimple groups of hexagonal zones of the dimple arrangement of the golf ball of the present invention.

Fig. 23 is a layout view showing another example of the contact portion of the hexagonal zone of the dimple arrangement of the golf ball of the present invention.

24 is a layout view showing still another example of the contact portion of the hexagonal zone of the dimple arrangement of the golf ball of the present invention.

25 is a perspective view illustrating an example of a connection line of a golf ball of the present invention.

It is a development view which shows the other example of the bonding line of the golf ball of this invention.

It is a perspective view which shows the other example of the bonding line of the golf ball of this invention.

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

10: dimple 11: small dimple

P1: 1st hexagon area dimple group

P2: 2nd hexagonal area dimple group

P3: 3rd hexagonal area dimple group

P4: 4th hexagonal area dimple group

P5: fifth hexagonal zone dimple group

P6: 6th hexagon zone dimple group

The present invention relates to a dimple arrangement of a golf ball, and more particularly, by configuring the dimple arrangement of a golf ball to be symmetrical, airflows of the right and left and top and bottom of the golf ball being hit and flying become constant, and the dimple is symmetrically. The present invention relates to a dimple arrangement of a golf ball that can be arranged to reduce drag and increase lift.

In general, the resistance generated from a fast flying golf ball has a frictional resistance generated in the front surface and a shape resistance generated in the rear. The frictional resistance is a resistance generated in the golf ball due to friction between the air and the golf ball, the shape resistance is a resistance generated by the vortex of air generated in the rear of the golf ball when the golf ball is flying in the air.

Among the resistors, the shape resistance acted as a major factor in reducing the ballistic and flying distance characteristics of the golf ball. In order to reduce the shape resistance, a plurality of concave grooves called dimples were formed on the outer surface of the golf ball. have.

The dimple-formed golf ball has a slower air flow compared to a golf ball without dimples, so that a vortex generated in the rear of the golf ball, i.e., a wake generation area is reduced, so that the wake reverses the golf ball in the direction of flight. Pulling in the direction lowers the shape resistance generated.

When dimples are arranged on the surface of a golf ball, dimples are designed by making the surface of a sphere into various polyhedrons formed by dividing into circles. For example, a globular tetrahedron consisting of four globular triangles, a spherical hexahedron consisting of six globular squares, a spherical octahedron consisting of eight globular triangles, a spherical dodecahedron consisting of twelve spherical pentagons, a spherical icosahedron consisting of twenty spherical triangles, etc. There is a split composition of spheres.

In addition, the spherical polyhedron may be further subdivided to form dimples by dividing the surface of the sphere into spherical 20-12 polyhedrons, spherical 6-8 polyhedrons, and the like. However, even if all these divided compositions are arranged in different spherical polyhedrons and arranged dimples, they can be superimposed on one another with spheres of the same diameter.

Nevertheless, the reality is that golf balls having a dimple arrangement by a new divided composition are made again. This is because the size of the surface area of each facet differs according to the type of divisional structure, and thus the size, depth, shape, etc. of the dimples can be changed when arranging the dimples over the sphere.

As a result, flight characteristics are also different for each dimple arrangement, resulting in a new segmentation structure. In addition, when dimples are arranged on the surface of a sphere by the method of dividing the spherical polyhedron, the dimples are arranged symmetrically with each other within one facet, even though the same facet is better than the asymmetrically arranged. Appears.

This is because when the golf ball is flying, the resistance of the air is more uniform in the low speed range from the peak of the ballistic to the ground.

In the flying area to the ballistic peak, the so-called high speed area, the golf ball is launched, and the large dimple has a larger pressure drag than the small dimple, and conversely, in the low speed area, the pressure drag is smaller than the small dimple.

Therefore, a new division method of the surface of the golf ball sphere is required so that the golf ball can have a more uniform landing point and a good flying distance characteristic, and a study on how to arrange dimples on the surface of the divided sphere is effective. It is required.

In the existing golf balls, many manufacturers have conducted a lot of research on the dimple arrangement of golf balls to pursue perfect symmetry. Dimples have been developed with numerous types of arrangements in the number of conventional dimples of about 430 to 560. However, the pursuit of perfect symmetry in the limited diameter of the golf ball has been too difficult in reality.

Golf balls have been trying to make the upper and lower parts the same by engaging the upper and lower molds to eject golf balls with dimples outside the ball, but they have been arranged without certain rules or laws. It was practically difficult to arrange the dimples at 42.67 mm in diameter.

However, the present invention has been studied in that the number of dimples can be reduced, and the problem can be solved by making the interval of the circle between the dimples and the dimples constant.

1 is a block diagram showing a dimple arrangement of a conventional golf ball, Figure 2 is a block diagram showing a hexagonal region of the dimple arrangement of a conventional golf ball.

The dimple arrangement of the conventional golf ball shown in FIGS. 1 and 2 is disclosed in Korean Patent Publication No. 0138895 (February 23, 1998), and the spherical surface of the golf ball has six rectangular sections and eight sections. A dimple arrangement with a hexagonal section is designed to surround the golf ball surface.

When the dimple is planted on the surface of the golf ball in this way, the dimple of the golf ball reduces drag and generates lift. However, the arrangement of the dimples in the area of the six tetrahedrons, the dimples in the horizontal direction should be inserted and inserted between the three rows and three rows. Then, the drag reduction and lift lift can be further helped. To this end, the improvement of the dimple area relative to the surface area of the golf ball is large.

Therefore, even if the golf ball has a symmetrical structure up, down, left, and right, the horizontal line and the vertical line are in contact with each other, so that the ratio of the dimple to the surface area is lowered, thereby reducing drag and generating lift.

In addition, in the conventional dimple arrangement of the golf ball, the hexagonal eight regions are formed so that the dimple group in the hexagon is smaller in the outer dimple group than the dimple group in the center.

Looking at the intersections between the hexagonal zones, the intersections of the dimples should be present in each other, like the rectangular ones, but since the horizontal and vertical abuts in a straight line, this also has many effects on drag reduction and lift generation as in the square. It is an array structure to have the problem of intersection.

The present invention has been made in order to solve the above-mentioned conventional problems, by configuring the dimple arrangement of the golf ball to be symmetrical, the air flow of the left and right and top and bottom of the golf ball to be hit by flying becomes constant, the dimple symmetrically It is an object to provide a dimple arrangement of golf balls that can be arranged to reduce drag and increase lift.

In the present invention for achieving the above object, in the dimple arrangement of the golf ball, the surface of the golf ball dimple is formed of six hexagonal zones by the virtual dividing line and eight between each hexagonal zone It is divided into approximately triangular zones, characterized in that the dimple group is disposed in each zone.

More preferably, the dimple group disposed in the hexagonal zone is composed of the first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6, in a direction perpendicular to the centerline of one outer diameter. The first to fourth hexagonal zone dimple groups P1, P2, P3, and P4 are arranged in succession, and the fifth and sixth hexagonal zone dimple groups P5, on both sides of the second hexagonal zone dimple group P2. P6) is arranged.

More preferably, the first to fourth hexagonal zone dimple groups P1, P2, P3, and P4 have dimples arranged in the same arrangement, and the fifth and sixth hexagonal zone dimple groups P5 and P6. ) Is characterized in that the dimples are arranged in the same arrangement form.

More preferably, the first and third hexagonal zone dimple groups P1 and P3 have dimples arranged in the same arrangement, and the second, fourth, fifth and sixth hexagonal zone dimple groups P2, P4, P5, P6) is characterized in that the dimples are arranged in the same arrangement form.

More preferably, the first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6 have dimples arranged in the same arrangement.

More preferably, the first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6 have a maximum of eight dimples arranged in the centerline direction of the dimple group.

More preferably, the dimple group in the hexagonal zone is characterized in that up to seven dimples are arranged in the direction of the centerline of the dimple group.

More preferably, when three circular dimples of the same diameter in the group of dimples of the hexagonal section abut in a triangular form, a triangle is formed by connecting the center points of each dimple, and the length of each side of the triangle and the height of the triangle The dimples are arranged such that the sum of the differences is equal to the cross width length r1 of the shared dimples of the dimple groups in the hexagonal zones.

More preferably, the sum (d1 + d2 + d3) of the widths of the insertion portions of the same diameter dimples of the other row inserted into the dimples of the same diameter in one row of the center lines in the dimple groups of the hexagonal zones is equal to the dimple group of the hexagonal zones. A dimple is disposed so as to be equal to the cross width r1 of the shared dimple.

More preferably, the group of dimples of the hexagonal zone is characterized in that a plurality of dimples of the same diameter are arranged.

More preferably, the dimple group of the hexagonal zone is characterized in that up to nine dimples are arranged in a direction perpendicular to the centerline of the dimple group, and the outer dimples of both sides are arranged to be shared with the dimple group of the adjacent hexagonal zone. .

More preferably, in each contact portion of the first and third hexagonal zone dimple groups P1 and P3 and the fifth and sixth hexagonal zone dimple groups P5 and P6, the dimple diameter of one side dimple group is the other dimple. It is characterized by being formed smaller than half of the dimple diameter of a group.

More preferably, the group of dimples of the triangular zone is characterized in that the arrangement of the same dimples are arranged symmetrically with each other.

More preferably, the dimple group of the hexagonal zones is characterized in that at least one dimple disposed in contact with the dimple group of each hexagonal zone is shared.

More preferably, the dimple group of the hexagonal zone is characterized in that dimples having a relatively small diameter are disposed on both sides of the contact line with the dimple group of each hexagonal zone to prevent overlapping of the dimples.

More preferably, the dimple group of the hexagonal zone is characterized by having a maximum of six dimples in a direction perpendicular to the centerline of the dimple group, and the dimples of both outer sides are covalently or adjacent to the dimple group of the adjacent hexagonal zone. It is done.

More preferably, the group of dimples of the hexagonal zone is characterized in that each hexagonal zone is formed in a quadrangle having a length equal to the circumference of the golf ball.

More preferably, the dimple group of the hexagonal zone is characterized in that the dimples on both sides of the dimple group are arranged to be shared with the dimple group of the adjacent hexagonal zone in the direction of the centerline of the dimple group.

More preferably, the dimple group of the hexagonal zone is characterized in that the joining line of the golf balls is formed in a line shape in the direction of the center line of the dimple group.

More preferably, the dimple group of the hexagonal zone is characterized in that the joining line of the golf balls is formed in a zigzag form perpendicular to the center line of the dimple group.

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

3 is a schematic diagram showing a dimple arrangement of a golf ball according to an embodiment of the present invention, Figure 4 is a schematic diagram showing a hexagonal zone of the dimple arrangement structure of a golf ball according to an embodiment of the present invention, 5 is a schematic view showing each zone of the dimple arrangement of the golf ball according to an embodiment of the present invention, Figure 6 is a development view showing a dimple arrangement of the golf ball according to an embodiment of the present invention, Figure 7 Is a plan view showing a hexagonal zone of the dimple arrangement of the golf ball according to an embodiment of the present invention, Figure 8 is an enlarged view showing a hexagonal zone of the dimple arrangement of the golf ball according to an embodiment of the present invention, Figure 9 is an enlarged view showing the dimple arrangement of the hexagonal zone of the dimple arrangement of the golf ball according to an embodiment of the present invention, Figure 10 is a hexagonal sphere of the dimple arrangement of the golf ball according to an embodiment of the present invention Figure 11 is another enlarged view showing the dimple arrangement of Figure 11 is a plan view showing a group of dimples of the hexagonal zone of the dimple arrangement of the golf ball according to an embodiment of the present invention, Figure 12 is a golf according to an embodiment of the present invention 13 is a plan view showing a contact portion of the dimple group of the hexagonal region of the dimple arrangement of the ball, Figure 13 is another plan view showing a contact portion of the dimple group of the hexagonal region of the dimple arrangement of the golf ball according to an embodiment of the present invention, 14 is a plan view showing a golf ball formed with a dimple arrangement of golf balls according to an embodiment of the present invention, Figure 15 is a block diagram showing a golf ball formed with a dimple arrangement structure of a golf ball according to an embodiment of the present invention 16 is a development view showing a group of dimples in a hexagonal region of a dimple arrangement of a golf ball according to an embodiment of the present invention.

As shown in FIG. 6, in the dimple arrangement structure of the golf ball according to the present embodiment, the surface of the golf ball on which the dimples are formed is divided by the imaginary dividing line S, so that the first to sixth hexagonal zone dimple groups P1. , P2, P3, P4, P5, and P6).

The first to fourth hexagonal zone dimple groups P1, P2, P3, and P4 are continuously arranged in a direction perpendicular to the center line C, which is one outer diameter. The fifth and sixth hexagonal zone dimple groups P5 and P6 are disposed on both sides of the second hexagonal zone dimple group P2.

The golf ball of this embodiment is divided into six hexagonal zones thus arranged and eight approximately triangular sections formed between each hexagonal zone. In each zone, dimple groups in which dimples of a predetermined shape are arranged are arranged.

As shown in FIG. 3, the outer circumferential circle C1 of the golf ball has a diameter of 42.67 mm. It has an outer circumferential circle C1 of 134.0518 mm. When this circumference is divided into four, a square L having one side length of 33.5130 mm is obtained. In this square L, a circle C2 having a diameter inscribed is formed. Therefore, the surface of the golf ball is divided into six parts to form a spherical hexahedral arrangement.

FIG. 4 shows the inscribed circle C2 of FIG. 3, and since the hexagon is divided and derived from the inscribed circle C2 by the imaginary dividing line S, the arrangement of the spherical hexahedron is shown. If the dimple group of the cube is distributed on the surface of the golf ball as shown in Fig. 3, it will have a shape as shown in Fig. 5.

Thus, dimples are planted on the golf ball surface of six hexahedral zones having a length of 33.5130 mm divided into four quarters at a surface length of 134.0518 mm of a golf ball having a diameter of 42.67 mm. Then, the dimple arrangement structure having symmetry with respect to the cube is possible only when the cubes intersect each of the cubes 1 to 6 (B1 to B6) that are in contact with each other in the developed view of the cube.

As shown in Fig. 7, the arrangement of the dimples is difficult to arrange the left and right dimples effectively even in the center line C direction of the hexagonal zone dimple group, that is, divided by the number of dimples to be distributed.

Because the dimples are more effective in increasing the amount of spin and the amount of spin generated by the dimple effect of the golf ball as the dimple area is higher than the surface area of the golf ball, the dimple area is reduced when arranged in a line as shown in FIG. The dimple effect is reduced.

As shown in FIG. 8B, when the dimples are arranged in a zigzag form, the length D in the horizontal or vertical direction of the dimple group of FIG. 7 may be the sum of the diameters of the dimples. Since the dimples of the horizontal lines of the intersecting portions are inserted as much as the insertion portion (d), their lengths should be subtracted.

In addition, the dimple arrangement of the vertical and horizontal lines of the hexagonal section is correctly inserted into the hexagonal section of FIG. 7, and the dimple arrangement of the dimple group in which the dimples do not intersect the dimple and the upper and lower hexagonal sections that are in contact is in the form of FIG. 8 (b). There is a problem that must be taken.

In the dimple structure shown in FIG. 9, when the center points A, B, C, and D of the adjacent dimples 10 are connected by lines, respective line segments L1, L2, L3, and L4 can be obtained, and the adjacent 4 The line segments connecting the centers of two dimple circles are all formed in an equilateral triangle shape having the same length.

In this equilateral triangle, the height L6 can be known, and the length of the insertion portion d present in the arrangement of the dimples of FIG. 8 (b) based on the line length, which is the height L6 of the equilateral triangle, can be known. do.

That is, the difference between the height L6 of the equilateral triangle and the lengths L1, L2, and L5 of each side of the equilateral triangle becomes the length of the insertion portion d. Therefore, by inserting the number of vertical dimples in the horizontal length (D) and the vertical length (D), that is, the width of 33.5130 mm in FIG. 7, the number of dimples can be found by considering the insertion part (d) of the horizontal length. It becomes possible.

The most ideal longitudinal dimples are seven dimples. Thus, if seven dimples constitute the dimple group in the transverse dimple of FIG. 8 (b), the result as shown in FIG.

Specifically, in the group of dimples in the hexagonal zone, when three circular dimples of the same diameter contact each other in a triangular form, a triangle is formed by connecting the center points of the respective dimples, and the lengths (L1, L2, L5) of the sides of the triangle ), The sum of the difference between the height L6 of the triangle ((L1-L6) + (L2-L6) + (L5-L6)) is the width of the intersection of the shared dimples (r1) between the groups of dimples in each hexagonal section. The dimples are arranged to be equal to.

Thus, when the dimples are arranged in a zigzag form in the hexagonal zone dimple group, the intersection length for the shared dimples with the adjacent hexagonal zone dimple groups can be estimated based on the distance between the dimples.

As shown in FIG. 11, the dimple portion of the outer dimple may be the same as the dimple inside the hexagonal region since the upper and lower dimples among the three dimples at the center of the boundary line of the spherical hexagonal region have the same circumference of each row. The center dimple of the three is said to be as large as the difference in the circumference, but the dimple can be solved by shifting the dimple arrangement.

In the dimple group of the hexagonal zone, the sum of the widths (d1 + d2 + d3) of the insertion portions (d) of the same diameter dimples of the other row inserted into the dimples of the same diameter of one row in the center line (C) direction of the dimple group is the The dimples are arrange | positioned so that it may be equal to the cross width r1 of the shared dimples between dimple groups.

That is, when a plurality of dimple rows are arranged on one side based on the centerline C of the dimple group, the sum d1 + d2 + d3 of the insertion portions between the dimple rows is equal to the cross width r1 of the shared dimples. When the dimple rows are arranged to be the same, it can be seen that the symmetry of the dimples in the dimple group and the dimple ratio of the golf balls are excellent.

Thus, in the dimple arrangement of the spherical hexahedron divided into six sides of the golf ball, the present invention can find the number of horizontal and vertical dimples that can be connected perfectly with the neighboring hexagonal areas, which is the dimple symmetry of the golf ball. It also has the effect of finding the structure.

As shown in Fig. 11, the golf ball of the present embodiment was able to obtain 37 dimples and six dimples indicated on the boundary line in the hexagonal zone dimple group. When the surface of the golf ball is divided into six and one cube is distributed on the surface of the golf ball, the first and third hexagonal zone dimple groups P1 and P3 of the hexagonal zones of FIG. In each of the contact portions with the fifth and sixth hexagonal zone dimple groups P5 and P6, dimples of one hexagonal dimple group are positioned at the upper and lower portions thereof, thereby colliding with the dimples of the other hexagonal zone dimple group to overlap. Have.

12 shows an example of the dimples at the collision site, and this problem is caused by the first hexagonal zone dimple group P1 and the third hexagonal zone dimple group P3 and the fifth hexagonal zone dimple group P5. This is a problem of overlapping dimples. There are two solutions to this problem, as shown in FIG.

The collision of the dimples of each of the dimple groups in FIG. 13 has a diameter of 2 instead of the dimples 10 of the fifth hexagonal dimple group P5, leaving the dimples 10 of the first and third hexagonal dimple groups P1 and P5 intact. The small dimples 11 before and after mm may be arranged to prevent this collision.

In another collision solving method of FIG. 12, the dimple 10 of the fifth hexagonal dimple group P5 is left as it is, and instead of the dimples 10a of the first and third hexagonal dimple groups P1 and P3, There is another method of planting dimples 11a around 2 mm in diameter to avoid collisions.

In addition, the regular arrangement of the six divided parts of the golf ball thus completed can be symmetrical in any direction, which can lead to an improvement in the straightness and flying distance of the golf ball.

As shown in FIG. 14, the portions where the dimples other than the spherical hexahedron are not planted are all approximately eight triangular sections, and these eight portions may also have a plurality of dimple arrangement methods.

The groups of dimples of these eight approximately triangular sections are divided into eight locations, less than 25% of the total, and each part is regularly distributed between the six regular hexagonal zone dimple groups of the total dimples, each hexagonal The impact on the zone dimple group will be around 4%.

As an exception to the dimple arrangement of the golf ball of this embodiment, the manufacturer arbitrarily selects dimples 21 to 25 of various sizes in the dimple group of the triangular zone without affecting the dimple symmetry of the golf ball. Of course, it is possible to arrange.

As shown in the perspective view of Figure 14, the dimple arrangement of the golf ball of this embodiment may have a certain rule. This results in a dimple arrangement of the golf ball with perfect symmetry. Therefore, the golf ball is divided into six parts and each part is arranged in a constant dimple to control 75% of the whole, and when a plurality of dimples are regularly planted in the eight triangular zone dimple groups of FIG. A ball is formed.

The group of dimples in this triangular zone is preferably arranged symmetrically with each other having the same arrangement of dimples.

In particular, as shown in (a) front view, (b) side view, and (c) plan view in the configuration diagram of FIG. 15, a golf ball having a dimple arrangement structure of the golf balls of this embodiment is along the centerline C of the dimple group. Seven dimples are divided by a virtual dividing line S into groups of dimples of six hexagonal sections arranged in a line and groups of eight approximately triangular sections therebetween.

Among them, a developed view of the dimple groups P1 to P6 of the first to sixth hexagonal zones is shown in FIG. 16. In particular, the dimple groups P5 and P6 of the fifth and sixth hexagonal zones are arranged such that some of the dimples of both ends are shared with the dimple groups of the eight triangular zones in a direction perpendicular to the centerline C of the dimple group.

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

17 is a development view showing a dimple group of hexagonal zones of a dimple arrangement structure of a golf ball according to another embodiment of the present invention, and FIG. 18 is a golf ball having a dimple arrangement structure of a golf ball according to another embodiment of the present invention. 19 is an exploded view showing a group of dimples of a hexagonal zone of a dimple arrangement of a golf ball according to another embodiment of the present invention, and FIG. 20 is a view of a hexagonal zone of a dimple arrangement of a golf ball of the present invention. 21 is an explanatory view showing various dimple groups, and FIG. 21 is a developed view showing a dimple group of hexagonal sections of a dimple arrangement structure of a golf ball according to another embodiment of the present invention, and FIG. 22 is a dimple arrangement structure of a golf ball of the present invention. 23 and 24 are layout views showing another example of the contact portion of the hexagonal region of the dimple arrangement of the golf ball of the present invention. The.

17 and 18, in the dimple arrangement of the golf ball of another embodiment, the first and third hexagonal zone dimple groups P1 and P3 have dimples arranged in the same arrangement with each other. The second, fourth, fifth and sixth hexagonal zone dimple groups P2, P4, P5, and P6 have dimples arranged in the same arrangement.

In particular, in the first and third hexagonal zone dimple groups P1 and P3, small dimples are disposed at both ends in the direction of the centerline C of the dimple group, and the second, fourth, fifth and sixth hexagonal zones are arranged. In the dimple groups P2, P4, P5, and P6, seven dimples are arranged in a line along the centerline C of the dimple group.

Eight approximately triangular dimple groups are arranged between these dimple groups P1, P2, P3, P4, P5, and P6, and dimples 31 to 33 of various sizes are arbitrarily arranged in the dimple groups of the triangular zones. Of course it is also possible.

The group of dimples in this triangular zone is preferably arranged symmetrically with each other having the same arrangement of dimples.

As shown in FIG. 19, the dimple arrangement structure of the golf ball according to another embodiment includes the first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6 in the same arrangement. It is arranged.

The first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6 have eight dimples arranged in a line along the centerline C of the dimple group, and the centerline C of the dimple group. Up to nine dimples are arranged in the vertical direction of.

Eight approximately triangular dimple groups are arranged between these dimple groups P1, P2, P3, P4, P5, and P6. Of course, dimples of various sizes may be arbitrarily arranged in the dimple groups of the triangular regions. .

The group of dimples in this triangular zone is preferably arranged symmetrically with each other having the same arrangement of dimples.

The hexagonal shape of this embodiment is a group of hexagonal dimples formed in an outline of a length of 33.5130 mm divided into four quarters at the circumferential length of a center circle having a diameter of 134.0518 mm, as shown in FIG. 20. This can be arranged. Combining these dimple groups gives a spherical cube structure that can wrap the outer surface of the golf ball.

In addition, in the dimple group of type A, B, and C of FIG. 20, the dimples contacting the semicircles protruding out of the outline are not tangentially displayed because they are shared areas interchanged with the dimple group.

In addition, the main hexagonal dimple group includes approximately 234 to 242 main dimples. Seven dimples are planted in eight dimple groups of approximately triangular sections, and approximately 56-72 main dimples are arranged.

Therefore, the sum of the number of dimples of each dimple group is a structure arrange | positioned on the outer surface of the golf ball of the main size of the same size which consists of 290-314 pieces.

16 to 32 small dimples are included here, and the total number of dimples is slightly different. However, the total dimples of the golf ball are preferably formed to be approximately 320 to 350.

As still another embodiment of the present invention, as shown in C of FIG. 20, when the same size dimples are inserted into the hexagonal dimple group, there is an intersection area sharing the dimples in the horizontal direction.

 In addition, 36 dimples are arranged in the dimple group of each hexagonal zone, and the total number of dimples of the dimple group of the six hexagonal zones is 216, and each adjoining for reducing the drag of the portion of the dimple group adjacent to the longitudinal direction. When three small dimples are planted in the site, a group of eight roughly triangular dimples in which seven dimples are arranged is formed.

When the total number of dimples of these golf balls is added to allow approximately 272 to 280 main dimples, the dimples can be arranged to be advantageous to the low to medium ballistic shots of the golf balls, thereby producing the golf balls.

In addition, the exchange area in which the dimples are shared can be shared in the same manner as the dimple group of adjacent hexagonal zones only when the diameter of the dimples is divided by 4.7875 mm, thereby exhibiting the effect of the symmetrical arrangement of the present invention.

As shown in Fig. 21, the first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6 have dimples arranged in the same arrangement, but the first, third, and fifth And the arrangement directions of the dimples are formed perpendicular to the sixth hexagonal zone dimple groups P1, P3, P5 and P6 and the second and fourth hexagonal zone dimple groups P2 and P4.

The hexagonal dimple group in this case is a combination of hexagonal dimple groups in a complicated case, and is an illustration showing an arrangement structure of the dimples when creating the most complicated dimple pattern.

As shown in (a), (b), and (C) of FIG. 22, the dimple group of the hexagonal zones has a small dimple to avoid overlapping the dimples when joining with the dimple group of the adjacent hexagonal zones on the upper, lower, and left and right sides. Will be deployed. In addition, a variety of forms of dimple arrangements in which dimples are arranged so that each dimple group is shared with each other may be modified.

As shown in Fig. 23, a circular dimple 10 having a diameter of 4.7875 mm is continuously connected in a group of hexagonal zone dimples of various shapes in a quadrangular shape of the golf ball, which is divided into four quarters with one side of 33.5130 mm.

However, at the interface of these dimple groups or at junctions with adjacent hexagonal zone dimple groups, small dimples 11 of various sizes less than 1/2 of a diameter of 4.7875 mm are arranged and shared in each dimple group, so that dimple arrangement of golf balls The structures are symmetrical to each other.

As an example of these dimple groups, various dimple groups can be arranged as shown in FIGS. 22A, 22B, and C. These dimple groups can be adopted to be suitable for various conventional shapes. do.

In addition, as shown in FIG. 24, in the dimple group of the hexagonal area of a golf ball, the dimple of both outer sides is arrange | positioned in common with the dimple group of the adjacent hexagonal area in the direction of the center line C of the dimple group.

The dimple group of hexagonal sections arranged in the golf ball of this embodiment is formed by dividing the outer circumference of the golf ball into four quarters to be in contact with the inside of the square having the same horizontal length and vertical length, and form a horizontal horizontal line and a vertical line.

The dimple group of such a hexagonal area may cross | intersect with the dimple group of an adjacent hexagonal area, and may have an intersection area on a horizontal line, and may have an intersection area on a vertical line.

Seven dimples 10 are arranged along the centerline C of the dimple group, that is, along the vertical line in the center of the rectangle, in the dimple group of the hexagonal section having an intersection area on the vertical line, and each of the dimples disposed at both ends thereof. It will share with this adjacent hexagonal zone dimple group.

In the dimple group of this hexagonal region, the dividing line S is formed in the shape which the both ends of the dimple group center line C direction were cut | disconnected.

Therefore, it is preferable to determine whether the position of the intersection area of the dimple group of the hexagonal region is to be formed on the vertical line or the horizontal line according to the number of dimples of the dimple group of the hexagonal region.

Hereinafter, with reference to the accompanying drawings will be described in more detail for the connection line of the golf ball according to a preferred embodiment of the present invention.

Fig. 25 is a perspective view showing an example of a joining line of a golf ball of the present invention, Fig. 26 is a developed view showing another example of a joining line of a golf ball of the present invention, and Fig. 27 shows another example of a joining line of a golf ball of the present invention. Perspective view.

As shown in FIG. 25, the connection line BL of the golf ball according to the present embodiment means a boundary line between the upper mold and the lower mold during injection molding of the golf ball, and the golf ball in the dimple group of the hexagonal zone of the present embodiment. The joining line BL is curved in a zigzag form perpendicular to the centerline C of the dimple group.

The joint line BL in this case is formed in a zigzag form between the dimples of the group of dimples in the hexagonal zone, so as to form a smooth outer surface on the outer surface of the golf ball so that it is difficult to distinguish the seam of the joint line.

However, when the injection molding of the golf ball is difficult to process the interface between the upper mold and the lower mold, it is difficult to manufacture the mold and excessive production cost is required.

26 and 27, in the dimple group of the hexagonal zone of this embodiment, the joining line BL of the golf balls is formed in a straight line in the direction of the center line C of the dimple group.

The joint line BL is a straight line formed at the center of the golf ball along the center line C of the hexagonal zone dimple group when the golf ball is produced by injection.

Specifically, a dimple arrangement structure in which dimples are arranged on the left and right sides of the center line C of the dimple group of the hexagonal zone, that is, the joint line BL, and the joint line is formed in a straight line at the center of the dimple group of the hexagonal zone of the golf ball. to be.

In addition, the imaginary dividing line S of the dimple group of a hexagonal area becomes a boundary line which the middle part of the intersection area | region of each dimple group divided into 4 left and right circumferences.

In particular, as shown in Fig. 26, in the golf ball of the present embodiment in which the bonding line BL is formed in a straight line, the first to fourth hexagonal zone dimple groups P1, P2, P3, and P4 are dimpled in the same arrangement. Are arranged, and the dimples are arranged in the same arrangement form as the fifth and sixth hexagonal area dimple groups P5 and P6. Further, between these dimple groups, a substantially triangular zone dimple group is formed in which dimples 41 to 47 of various sizes are arranged.

In the first to fourth hexagonal area dimple groups P1, P2, P3, and P4, a total of eight rows of dimples are arranged in four rows on the upper and lower sides with respect to the bonding line BL, and three in the uppermost dimple column. Four dimples are arranged, and four dimples are arranged in the lowermost dimple row.

That is, it is preferable that dimples are arrange | positioned so that the number of dimples of the dimple row of the uppermost side and the dimple row of the lowest side may differ by one.

Therefore, it is easy to process the interface between the upper mold and the lower mold during injection molding of the golf ball, it is possible to reduce the mold manufacturing cost.

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, in the present invention, the dimple arrangement of the golf balls is configured to be symmetrical, so that the left and right symmetry of the dimples are regular, and the left and right and top and bottom air flows of the golf balls that are hit by the right and left balance are constant. It is effective.

In order to arrange the dimples of the golf balls in the form of a cluster of uniform shapes, the dimples of the golf balls are divided into virtual spherical dividing lines of the spherical hexahedron, and the six divided parts are dimples having the same shape and size Consists of the golf ball has the effect that it can be an accurate symmetrical structure in any direction up and down and left and right.

In addition, by dividing the group of dimples of six hexagonal zones, the dimple arrangement and size of the six divided areas are symmetrical, thereby providing an effect of reducing drag and increasing lift.

In addition, according to the dimple arrangement structure, it is possible to form a joint line of various golf balls, and to reduce the mold cost.

Claims (20)

In the dimple arrangement of the golf ball, The surface of the dimpled golf ball is divided into six hexagonal zones and eight approximately triangular zones between the hexagonal zones by virtual dividing lines, and a dimple group is disposed in each zone. Dimple arrangement of golf balls. The method of claim 1, The dimple group disposed in the hexagonal zone is composed of the first to sixth hexagonal zone dimple groups P1, P2, P3, P4, P5, and P6, and includes the first to the first in the direction perpendicular to the centerline of one outer diameter. Four hexagonal zone dimple groups P1, P2, P3, and P4 are continuously arranged, and fifth and sixth hexagonal zone dimple groups P5 and P6 are disposed on both sides of the second hexagonal zone dimple group P2. Dimple arrangement structure of the golf ball, characterized in that there is. The method of claim 2, The first to fourth hexagonal zone dimple groups P1, P2, P3, and P4 have dimples arranged in the same arrangement, and the fifth and sixth hexagonal zone dimple groups P5 and P6 are identical to each other. A dimple arrangement structure of a golf ball, characterized in that the dimples are arranged in an arrangement form. The method of claim 2, The first and third hexagonal zone dimple groups P1 and P3 have dimples arranged in the same arrangement, and the second, fourth, fifth and sixth hexagonal zone dimple groups P2, P4, P5, P6) dimple arrangement structure of the golf ball, characterized in that the dimples are arranged in the same arrangement form. The method of claim 2, The first to sixth hexagonal area dimple groups (P1, P2, P3, P4, P5, and P6) have dimples arranged in the same arrangement as each other. The method of claim 5, The first to sixth hexagonal zone dimple groups (P1, P2, P3, P4, P5, and P6) have a dimple arrangement structure of golf balls, characterized in that up to eight dimples are arranged in the direction of the center line. The method according to claim 1 or 2, The dimple group of the hexagonal section is a dimple arrangement structure of a golf ball, characterized in that the dimple is arranged up to seven in the direction of the center line. The method of claim 7, wherein When three circular dimples of the same diameter among the dimple groups of the hexagonal section abut each other in a triangular form, a triangle is formed by connecting the center points of each dimple, and the sum of the difference between the length of each side of the triangle and the height of the triangle is And dimples are arranged such that the dimples are equal to the cross width of the shared dimples (r1) of the dimple groups of the hexagonal zones. The method of claim 7, wherein The sum (d1 + d2 + d3) of the widths of the insertion portions of the same diameter dimples of the other row inserted into the dimples of the same diameter in one row of the center line direction among the dimple groups of the hexagonal zones is the intersection of the shared dimples of the dimple groups of the hexagonal zones. Dimple arrangement structure of a golf ball, characterized in that the dimples are arranged to be equal to the width (r1). The method according to claim 1 or 2, The dimple group of the hexagonal section is a dimple arrangement structure of a golf ball, characterized in that a plurality of dimples of the same diameter are arranged. The method according to claim 1 or 2, The dimple group of the hexagonal zone is a dimple arrangement structure of the golf ball, characterized in that up to nine dimples are arranged in a direction perpendicular to the centerline, so that the dimples on both sides are shared with the dimple group of the adjacent hexagonal zone. The method of claim 2, At each contact portion of the first and third hexagonal zone dimple groups P1 and P3 and the fifth and sixth hexagonal zone dimple groups P5 and P6, the dimple diameter of one side dimple group is the dimple diameter of the other dimple group. Dimple arrangement structure of the golf ball, characterized in that formed smaller than half. The method according to claim 1 or 2, The dimple group of the triangular zone, the dimple arrangement structure of the golf ball, characterized in that the arrangement form of the same dimple and mutually arranged symmetrically. The method according to claim 1 or 2, The dimple group of the hexagonal zones, dimple arrangement structure of the golf ball, characterized in that at least one dimple disposed in the contact portion with the dimple group of each hexagonal zone is shared. The method according to claim 1 or 2, The dimple group of the hexagonal section, the dimple arrangement of the golf ball, characterized in that dimples of a relatively small diameter are disposed on both sides of the contact line with the dimple group of each hexagonal section to prevent the overlap of the dimples. The method according to claim 1 or 2, The hexagonal dimple group has a maximum of six dimples arranged in a direction perpendicular to the centerline of the dimple group, and the dimples on both sides are shared or adjacent to the dimple group of the adjacent hexagonal zone. Dimple array structure. The method according to claim 1 or 2, The dimple group of hexagonal sections is a dimple arrangement structure of a golf ball, characterized in that each hexagonal section is formed in a quadrangle of the length of the circumference of the golf ball in quarter. The method according to claim 1 or 2, The dimple group of the hexagonal section is a dimple arrangement structure of a golf ball, characterized in that the dimples on both sides in the direction of the center line of the dimple group are arranged to be shared with the dimple group of the adjacent hexagonal section. The method according to claim 1 or 2, The dimple group of the hexagonal section, the dimple arrangement structure of the golf ball, characterized in that the connection line of the golf ball is formed in a straight line in the direction of the center line of the dimple group. The method according to claim 1 or 2, The dimple group of the hexagonal section, the dimple arrangement structure of the golf ball, characterized in that the joining line of the golf ball is formed in a zigzag form perpendicular to the center line of the dimple group.

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