JP2000126335A - Park golf ball - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a player to have a normal hitting feeling by erecting spine- like pile members on a ball body made of hard plastic through a thin wall resinous film covering the whole outer circumference of the ball body, and minute projections extending horizontally in a two dimensional plane. SOLUTION: A ball body 11 is formed from a hard plastic and the outer surface thereof is coated with a resin film 14, on which frexible pile members 15 are erected. The member 15 has at its top a minute projection 17 extending laterally (right and left or foward or rearward). Otherwise, the pile member 15 is formed to have a doglegged shape viewed from its side and has a slant angle with respect to the surface of the ball body 11 around the doglegged point. Accordingly, a normal hitting feeling is obtained and speed control can be made on an artificial lawn in such as a park.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a game ball for park golf.

[0002]

BACKGROUND OF THE INVENTION Park golf was originally proposed as a golf-like game played on grass such as parks and rivers. The basic rule is that the ball is moved to the target hole and put into the hole by putting (launching) the competition ball by the club, but unlike normal golf, the ball does not fly in the air and does not fly on the ground. The characteristic of the competition is that it rolls and plays. Therefore, the ball used has a larger outer diameter than a normal golf ball and is made of a hard plastic having a relatively high specific gravity.

[0003] Park golf tends to have a gradual increase in the number of competitors because weak children and elderly people can compete with the same rules, and complicated rules are not required. Under such circumstances, the use of indoor facilities is increasing as facilities for daily practice and competitions. This is because indoor facilities can be played regardless of the weather such as rainy weather.

[0004]

Incidentally, since park golf is a game originally devised on the premise of playing on natural turf, even when playing indoors, it is similar to the feeling of playing using natural turf. A ring (pat touch) is desired. However, indoor competition facilities generally have difficulty maintaining and managing natural turf at all times.
There is no alternative but to lay artificial so-called grass.

[0005] The problem is that when artificial grass is used for the ground, the rolling speed of the game ball becomes unnaturally (excessively) high. The reason is the difference in flexibility (flexibility) between natural turf and artificial turf. Especially, the pile material of the artificial turf realizes the straight and flexible flexibility enough to naturally prevent the rolling of lightweight balls. It is a difficult point.

In order to solve such a problem, it is conceivable to use a hard rubber having a high specific gravity as a game ball. The hard rubber ball has a certain weight with respect to the artificial turf pile material, and the repulsion when hit with a club for park golf can obtain a feeling close to the feeling when hit on the outdoor grass. Because there is a nature. However, it is difficult to reliably and arbitrarily control the rolling speed of the ball with a weight of the order of hard rubber. Also, if hard rubber is used, the sound and feel (hit feeling) when hitting the ball will be uncomfortable, so it is far from the original feeling of play that emphasizes natural feeling,
Normally (for example, during qualifying or practice), it is often the case that a player who can obtain a high score is difficult to exert his or her original ability due to differences in hit feeling.

SUMMARY OF THE INVENTION An object of the present invention is to provide a game ball for park golf which can control the normal feel and the control of the rolling speed even on artificial grass such as indoors.

[0008]

In order to achieve the above object, a game ball for park golf according to the present invention comprises a ball body formed of hard plastic, and a thin resin film covering the outer peripheral front surface of the ball body. And a barbed flexible pile material erected through the resin film, wherein the pile material has a two-dimensional two-dimensional planar spread at the foremost end thereof. Is provided.

In some cases, the flexible pile material has at least one or more bending points from the base end to the tip.

[0010]

The game ball for park golf according to the present invention is:
Since the ball body is molded from hard plastic,
The hitting sound and feeling at the time of putting by the club are almost the same as the feeling of playing on the conventional natural turf, and a feeling comparable to that is obtained. The sound when cupped in is comparable to a normal competition ball.

The ball rolls on the artificial turf due to the putting by the club. The game ball according to the present invention is provided with a flexible pile material on the outer peripheral surface and has a microscopic two-dimensionally spread tip at the tip. Since the projecting portion is provided, the pile material on the ball surface bites into the pile constituting the artificial turf, and the minute projecting portion at the tip rolls while exhibiting resistance during insertion and exit. Therefore, regardless of the pile structure of the artificial turf, the game ball according to the present invention can respond to the player's feeling by exhibiting a rolling speed and a stopping distance close to that of the natural turf while premised on the artificial turf.

The pile material may be straight, but desirably has at least one or more bending points exhibiting a substantially V-shaped side surface. When the bending point is provided, the pile material has a portion inclined with respect to the spherical surface, so that the bending point bends and contracts when the ball is hit with the club. The arranging point acts as a cushion, so to speak, reduces the force applied to the base end of the pile when struck, and degrades (especially falls off)
To prevent

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a park golf ball according to the present invention. The ball 10 includes a ball body 11 formed of a hard plastic, a thin resin film 14 covering the outer surface thereof, and a flexible pile material 15 erected on the resin film 14. As shown in FIG. 2, the tip of the pile material 15 has a small protruding portion 1 extending in the left-right direction (or / and back and forth).
7 is formed.

The thickness of the resin film 14 is not particularly limited, but is, for example, 0.5 to 1.5 mm, the length of the pile material 15 is, for example, 3 to 5 mm, and the outer diameter is, for example, 0.2 to 1.5 mm.
mm is preferable. Resin film 14 and pile material 1
5 is easy to attach to the ball body 11 if it is integrally formed in advance. The pile member 15 can be provided by any appropriate means such as resin injection molding and electrostatic flocking. Also, the minute projection 17 at the tip end can be easily formed by, for example, a hot press.

According to such a structure, the internal ball body 1
1 is the same as a conventional park golf ball, so that when the ball 10 is hit with a park golf club, even if the pile material 15 and the resin film 14 are interposed on the ball surface, the hit feeling is comparable. A hitting sound can be obtained.
This is because the physical speed of the club head during play is transmitted to the ball body 11 irrespective of the thin resin coating 14 and the flexible pile material 15.

The rolling speed of the ball is, for example, as shown in FIG.
And the pile material 15 on the ball surface. In this case, the length of the pile material 15 and the shape of the microprojections 17 at the tip end affect the rolling speed of the ball 10. The longer the pile material 15 and the larger the two-dimensional spread of the minute projections 17, the lower the rolling speed of the ball 10. On the other hand, if the pile material 15 is too long, the pile material 15 is easily removed and the handling of the ball becomes inconvenient. The most desirable dimensions are that the pile length is about 3 mm, and the lateral width of the minute projections 17 is made to project in the left-right direction about 5 to 10% of the outer diameter of the pile.

With this setting, the ball 10 is subjected to a natural speed deceleration effect similar to that when rolling on natural turf, and it is possible to solve a problem in playing such as a situation where the ball 10 rolls too much or an unnatural stop at a short distance. Of course, this setting is a correlation with the structure of the artificial turf laid on the floor surface (especially, the pile structure and the pile density), and it is difficult to set uniquely. As a result of various experiments, the game ball according to the present invention exhibited a movement similar to that of natural grass, particularly on artificial grass having a loop structure.

FIG. 4 shows another embodiment of the pile material. The pile material 35 has two bending points 41 and 42 each having a substantially rectangular shape in the side surface. Therefore pile material 3
5 has an oblique angle with respect to the ball body surface with the inflection points 41 and 42 interposed therebetween, so that when it is hit from the outside (pile tip), the inflection points 41 and 42 bend and shrink, and the base end Absorb and reduce the external force transmitted to 47. As a result, deterioration of the base end portion of the pile material 35 is suppressed as compared with the case where the pile material 35 is straight-formed, and the probability of falling off is significantly reduced. The external force exerted by the club on the thin pile material 35 is strong, and if the falling off caused by the deterioration of the base end portion 47 is severe, the ball may draw an unexpected trajectory. Then, the quality of the ball can be guaranteed for a long time.

The tip of the pile material covering the ball surface may be formed into a spherical shape. The reason for this is that if there is no corner in terms of structure, the handling safety is enhanced. However, it can be said that practical inconvenience does not occur even in molding by hot pressing, since the corners of the end portions exhibit a curved line to some extent. It is also supposed that the pile material 15 on the ball surface falls off due to repetition of practice, but the pile density is reduced almost uniformly as a whole, so that the problem of the ball rolling with an unnatural curve curve does not occur.

[0020]

As described above, according to the game ball for park golf according to the present invention, it is possible to control the normal feel and the rolling speed even on artificial turf such as indoors.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a game ball according to the present invention.

FIG. 2 is a schematic sectional view showing an example of a shape of a pile material according to the present invention.

FIG. 3 is a diagram showing an example of contact between a game ball and artificial turf according to the present invention.

FIG. 4 is a view showing another embodiment of the pile material according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 ball 11 ball body 14 resin film 15, 35 pile material 17 minute protrusion 20 artificial grass 21 artificial grass pile material 41, 42 bending point 47 base end

Claims (2)

[Claims] 1. A ball body formed of hard plastic, a thin resin film covering an outer peripheral front surface of the ball body, and a barbed flexible pile material erected through the resin film. A game ball for park golf, wherein the pile material is provided with a microprojection having a two-dimensional planar spread in the horizontal direction at the leading end thereof. 2. The game ball for park golf according to claim 1, wherein said flexible pile material has at least one or more bending points each having a substantially rectangular shape in a side view.