JP5407238B2 - Golf ball set - Google Patents

Description

  The present invention relates to a golf ball set, and more particularly, to a golf ball set that makes it easy to select a golf ball having a ball outer diameter that is advantageous for ease of hitting while suppressing a loss in ball flight distance according to head speed. is there.

  The larger the ball outer diameter, the greater the stability of the appearance, and the higher the center of gravity of the ball, the easier it is to hit the golf ball. In particular, this effect becomes significant in situations where tee-up is not possible. It has also been found that as the ball outer diameter increases, the launch angle increases and the amount of backspin decreases. These contribute to an increase in the flight distance of the ball.

  However, the greater the ball outer diameter, the greater the flying distance loss because the air resistance of the flying ball increases. This flight distance loss increases as the flying time increases, that is, as the head speed of the golf club increases. Therefore, when the head speed is high, the ease of hitting is improved by increasing the diameter of the ball, but the influence of the flight distance loss is increased, and as a result, the ball flight distance is suppressed.

  On the other hand, when the head speed is slow, the hitting ability is improved by increasing the diameter of the ball and the influence of the flying distance loss is reduced, and as a result, the flying distance of the ball is not suppressed so much. Thus, the outer diameter of the ball affects the ease of hitting the ball, and the influence on the flight distance of the ball changes in relation to the head speed.

Conventionally, there are golf balls having different ball outer diameters, such as a large golf ball having a larger ball outer diameter than usual (see, for example, Patent Document 1), but a series of balls having different ball outer diameters. It did not constitute a set (series). Therefore, when the ball outer diameter is different, the weight of the ball and the material of the ball constituent member are different, and the ball characteristics (flight distance, hit feeling, trajectory, etc.) are changed due to this. Therefore, even if a ball outer diameter that is advantageous for extending the ball flight distance is selected based on the relationship between the ball outer diameter and the head speed as described above, the ball characteristics may be affected by factors other than the ball outer diameter. Because of the change, the flight distance may not increase as expected.
JP-A-8-308956

  An object of the present invention is to provide a golf ball set in which it is easy to select a golf ball having a ball outer diameter that is advantageous for ease of hitting while suppressing a loss of the flying distance of the ball according to the head speed.

In order to achieve the above object, the golf ball set of the present invention comprises a plurality of golf balls having different ball outer diameters, and the weights of the golf balls constituting the set are set to be the same, and the ball constituting member Are made of substantially the same material, and an outer diameter order identification display capable of recognizing the order of the outer diameter of the balls in the set is attached to the surface of each golf ball, and each golf ball constituting the set The outer diameter is in the range of 42.67 mm to 48.0 mm .

  Here, in order to make the ball outer diameters of the golf balls constituting the set different, the specifications are such that the outer diameters of the cores are made different while keeping the ball radial direction thickness of the ball constituent members other than the core the same. You can also. Alternatively, the specification can be made such that the layer thickness of the surface layer is different while the thickness of the ball constituent member other than the surface layer is the same in the ball radial direction. Alternatively, the thickness of the inner layer filled between the core and the surface layer may be different in the ball radial direction while the core and the surface layer have the same thickness in the ball radial direction.

For example, the specification is such that each golf ball constituting the set has a difference in ball outer diameter of 0.5 mm or more and 4.0 mm or less with respect to the adjacent golf balls in the order of the ball outer diameter. For example, the weight of each golf ball constituting the set is set to 44 g to 45.93 g.

  According to the golf ball set of the present invention, a set is constituted by a plurality of golf balls having different ball outer diameters, and the weights of the respective golf balls constituting the set are set to be the same, and the ball constituting member is substantially Because the same material is used, even if golf balls with different ball outer diameters are used in the set, the influence of factors other than the ball outer diameter on the flight distance of the ball can be suppressed. Changes can also be minimized.

  And since the outer diameter order identification display which can recognize the order of the size of the ball outer diameter in the set is attached to the surface of each golf ball, by referring to the outer diameter order identification display, the head speed Accordingly, it becomes easy to select a golf ball having a ball outer diameter that is advantageous for ease of hitting from the set while suppressing the loss of the flying distance of the ball in accordance with.

  The golf ball set of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIG. 1, a golf ball set 1 of the present invention (hereinafter referred to as “set 1”) includes a plurality of golf balls 2 (2a, 2b, 2c) having different ball outer diameters. The golf balls 2a, 2b, and 2c have outer diameters D1, D2, and D3. In this embodiment, the relationship is D1 <D2 <D3.

  The weights of the golf balls 2a, 2b, and 2c are set to be the same. For example, the weight is set to about 44 g to 45.93 g, particularly preferably about 45 g to 45.93 g.

  Further, the ball constituent members of the respective golf balls 2a, 2b and 2c are made of substantially the same material. Substantially the same material means that it is the same except for a weight adjusting material for adjusting the weight of the golf ball 2 described later.

  If it is the set 1 of the golf ball 2 of 2 piece structure so that it may illustrate in Fig.2 (a), the core 3 of each golf ball 2a, 2b, 2c will be substantially the same material. Further, the surface layer 5 of each golf ball 2a, 2b, 2c is also substantially the same material.

  Examples of the material of the core 3 include polymer materials such as rubber and resin. Examples of the material for the surface layer 5 include ionomer resins and polyurethane elastomers.

  As shown in FIG. 2B, in the case of the set 1 of the golf balls 2 having a three-piece structure, the cores 3 of the golf balls 2a, 2b, and 2c are substantially the same material, and the surface layer 5 is also substantially the same. The inner layer 4 that is made of the same material and is filled between the core 3 and the surface layer 5 is substantially the same between the golf balls 2a, 2b, and 2c.

  When there are a plurality of inner layers 4, that is, in the case of a golf ball 2 having a structure of four pieces or more, the material of the ball constituent members (core 3, inner layer 4, surface layer 5) of each golf ball 2 a, 2 b, 2 c is It becomes substantially the same.

  And the outer diameter order identification display 6 which can recognize the order of the magnitude | size of the ball outer diameter in the set 1 is attached | subjected to the surface of each golf ball 2a, 2b, 2c. In this embodiment, the outer diameter order identification display 6 of each golf ball 2a, 2b, 2c is A, B, C in Roman letters. The outer diameter order identification display 6 is not limited to this, and may be any number that can recognize the order of the outer diameters of the balls in the set 1, such as the numbers 1, 2, 3, and the like.

  Accordingly, the outer diameter order identification display 6 is a display in which these Roman letters and numbers are decorated, a display including these Roman letters and numbers, for example, a combination with the name of the set 1 (product name, brand name, etc.). You can also The dimension values of the outer diameters D1, D2, and D3 can also be used as the outer diameter order identification display 6.

  One or a plurality of outer diameter order identification indicators 6 can be attached to the surface of each golf ball 2a, 2b, 2c. In the case of attaching a plurality of outer diameter order identification displays 6, for example, it is attached to the position where the interval is the longest, and in the case of the two outer diameter order identification displays 6, it is attached to a symmetrical position on the outer periphery of the ball.

  As the specifications for making the ball outer diameters of the golf balls 2a, 2b, and 2c different from each other, as illustrated in FIG. By varying the outer diameter d of the ball, the outer diameters D1, D2, and D3 of the balls are varied. FIG. 2A shows a case of the golf ball 2 having a two-piece structure, in which the outer diameter d of the core 3 is made different while keeping the layer thickness of the surface layer 5 the same. FIG. 2B shows a case of a golf ball 2 having a three-piece structure, in which the outer diameter d of the core 3 is made different while keeping the inner layer 4 and the surface layer 5 the same layer thickness.

  In the case of this specification, in order to make the weight of each golf ball 2a, 2b, 2c the same, for example, a weight adjusting material such as a hollow capsule is mixed in the core 3, or the mixing ratio is set to each golf ball 2a. 2b, 2c.

  As another specification for making the ball outer diameters of the golf balls 2a, 2b, and 2c different, as shown in FIG. 3, the thicknesses of the ball constituent members other than the surface layer 5 in the ball radial direction remain the same. By changing the layer thickness of the surface layer 5, the ball outer diameters D1, D2, and D3 are made different. FIG. 3A shows the case of a golf ball 2 having a two-piece structure, in which the surface layer 5 has a different layer thickness T while keeping the outer diameter of the core 3 the same. FIG. 2B shows a case of a golf ball 2 having a three-piece structure, in which the layer thickness T of the surface layer 5 is varied while keeping the outer diameter of the core 3 and the layer thickness of the inner layer 4 the same. is there.

  In the case of this specification, in order to make the weight of each golf ball 2a, 2b, 2c the same, for example, a weight adjusting material such as a hollow capsule is mixed in the surface layer 5, or the mixing ratio is set for each golf ball. Vary between 2a, 2b, 2c.

  As another specification for making the ball outer diameters of the golf balls 2a, 2b, and 2c different, as illustrated in FIG. 4, the core 3 and the surface layer 5 have the same thickness in the ball radial direction, and the core The ball outer diameters D1, D2, and D3 are made different by making the thickness t in the ball radial direction of the inner layer 4 filled between the surface layer 5 and the surface layer 5 different. This specification is applied to a golf ball 2 having a structure of 3 pieces or more.

  In the case of this specification, in order to make the weight of each golf ball 2a, 2b, 2c the same, for example, a weight adjusting material such as a hollow capsule is mixed in the inner layer 4, or the mixing ratio is set for each golf ball. Vary between 2a, 2b, 2c.

  As described above, the ball outer diameters D1, D2, and D3 affect the ease of hitting the ball, and the influence on the flight distance of the ball changes in relation to the head speed.

  Therefore, for example, in the case of a golfer whose golf club head speed is faster than the general average (about 37 m / s to 40 m / s), as described above, the ease of hitting is improved by increasing the diameter of the ball. The influence of the loss of the flying distance of the ball becomes large, which is disadvantageous for increasing the flying distance by suppressing the flying distance of the ball. Therefore, if the flying distance of the ball is most important, the golf ball 2a having the smallest ball outer diameter D1 in the set 1 is selected. Thereby, the flight distance loss can be minimized. If importance is placed not only on the flight distance of the ball but also on the ease of hitting the ball, for example, the golf ball 2b having an intermediate ball outer diameter D2 in the set 1 is selected. Thereby, it is possible to improve the ease of hitting while suppressing a flight distance loss to some extent.

  In the case of a golfer whose golf club head speed is slower than the general average, as described above, the diameter of the ball improves the ease of hitting and the influence of the ball flight distance loss is reduced. Since the flight distance is not so much suppressed, the flight distance is not disadvantageous. Therefore, the golf ball 2c having the largest ball outer diameter D3 in the set 1 is selected. Thereby, it is possible to ensure the ease of hitting the ball and to suppress the flight distance loss.

  In the case of a golfer whose golf club head speed is a general average level, the golf ball 2b having an intermediate ball outer diameter D2 in the set 1 is selected to improve the ease of hitting while suppressing the flying distance loss to some extent. Can do.

  In the case of the set 1 of the present invention, the golf ball 2 having a ball outer diameter advantageous for ease of hitting while suppressing the loss of the flying distance of the ball according to the head speed by referring to the outer diameter order identification display 6. Can be easily selected from the set 1 and purchased.

  Further, since the weights of the golf balls 2a, 2b and 2c constituting the set 1 are the same and the ball constituent members are substantially the same material, the golf balls 2 having different ball outer diameters in the set 1 are obtained. Even if used, the influence of factors other than the ball outer diameter on the flight distance of the ball can be suppressed. In addition, changes in the hit feeling and the trajectory are minimized, and it can be used without a sense of incongruity.

The golf balls 2a, 2b, 2c constituting the set 1 have ball outer diameters D1, D2, D3 in the range of 42.67 mm to 48.0 mm .

  In the set 1, each golf ball 2a, 2b, 2c is, for example, 0.5 mm or more and 4.0 mm or less with respect to the adjacent golf balls in the order of the ball outer diameters D1, D2, and D3. Use specifications with a difference in outer diameter. This is because if the difference in the outer diameter of the ball is less than 0.5 mm, the change in the flying distance loss and the ease of hitting due to the difference in the outer diameter of the ball is too small and the need for the set 1 is low. On the other hand, if the difference in the ball outer diameter exceeds 4.0 mm, the change in the flight distance and the ease of hitting due to the difference in the ball outer diameter becomes too large, and it becomes impossible to cope with various head speeds.

  The number of golf balls 2 constituting the set 1 is set to about 2 to 5, for example, and about 3 is preferable.

  Using a test hitting robot, only the club head speed was changed to three levels (high-speed swing, air-side swing, low-speed swing), and the three types of balls with different ball outer diameters shown in Table 1 were hit, and the ball flight distance Etc. were measured. The results are shown in Table 1.

  The three types of balls each have the same weight and have a two-piece structure in which the ball constituent members are made of substantially the same material. Then, the outer diameters of the balls are made different by changing the outer diameter of the core while keeping the layer thickness of the surface layer the same.

  The club used was a driver with a loft angle of 9 ° and hit the ball with the tee up. The hitting point when hitting the ball was set to the center position of the club face so that it would be the same position even if the ball outer diameter changed.

  From the results of Table 1, when the head speed is high (high-speed swing), the difference in the flight distance of the ball when using the maximum ball outer diameter (48.0 mm) and the minimum ball outer diameter (42.8 mm) is 20 It can be seen that the larger the ball outer diameter, the greater the influence of the flying distance loss, and the shorter the flying distance of the ball. When the head speed is slow (low speed swing), the difference in the flight distance of the ball when using the maximum ball outer diameter (48.0 mm) and the minimum ball outer diameter (42.8 mm) is 5 yards. It can be seen that even if the diameter is increased, the influence of the flying distance loss is small, and the flying distance of the ball is not so short.

  In addition, various testers (A to J) having golf club head speeds of the general average, below the general average, and above the general average actually tried the same three types of balls as in Table 1 in a round. Evaluated the ease of hitting. The evaluation results are shown in Table 2. The evaluation was based on the ease of hitting a ball having a ball outer diameter of 42.8 mm as a reference, and the evaluation was relatively made in five stages of 1, 2, 3, 4, and 5 points. The larger the evaluation score, the easier it is to hit.

  From the results in Table 2, it can be seen that, regardless of the head speed, it is easy to hit the ball when the outer diameter of the ball is large.

It is explanatory drawing which illustrates the golf ball set of this invention. It is sectional drawing which illustrates the golf ball which comprises a set. It is sectional drawing which illustrates another golf ball which comprises a set. It is sectional drawing which illustrates another golf ball which comprises a set.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Golf ball set 2, 2a, 2b, 2c Golf ball 3 Core 4 Inner layer 5 Surface layer 6 Outer diameter order identification display

Claims (6)

A set is composed of a plurality of golf balls having different ball outer diameters, and the weights of the respective golf balls constituting the set are set to be the same, and the ball constituent members are made of substantially the same material so that the outside of the ball in the set. An outer diameter order identification display capable of recognizing the order of the diameter is attached to the surface of each golf ball, and the ball outer diameter of each golf ball constituting the set is in the range of 42.67 mm to 48.0 mm. A golf ball set.   Each golf ball constituting the set has a different ball outer diameter by changing the outer diameter of the core while maintaining the same thickness in the ball radial direction of the ball constituent members other than the core. The golf ball set according to claim 1.   Each golf ball constituting the set has a different ball outer diameter by changing the layer thickness of the surface layer while keeping the ball radial direction thickness of the ball constituent members other than the surface layer the same. The golf ball set according to claim 1.   The golf balls constituting the set have the same radial thickness of the inner layer filled between the core and the surface layer while keeping the same radial thickness of the core and the surface layer. 2. The golf ball set according to claim 1, wherein the outer diameter of the ball is made different by making it different. Each of the golf balls constituting the set, with respect to a golf ball which are adjacent in the order of magnitude of the ball outer diameter of claims 1 to 4 having a difference of 4.0mm below the ball outer diameter than 0.5mm The golf ball set according to any one of the above. The golf ball set according to claim 1, wherein the weight of each golf ball constituting the set is set to 44 g to 45.93 g.

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