JPH01232980A - Golf ball with brake blade - Google Patents

Abstract

PURPOSE:To cause a golf ball to be braked by a brake blade and thereby fly over a short distance even if it is shot in the same manner as usual one and prevent the human body from injuries when he is hit with the ball by slowing the flying speed, by providing the brake blade having fins and injecting liquid in a cavity of a ball body. CONSTITUTION:A brake blade 2 is formed like a shuttlecock in which fine mesh nets 2b are stretched respectively between a plurality of ribs 2a extending expansibly from the base 4 to the outer ends. Fins 3 projecting outward are provided at proper intervals on the ribs 2a. A ball body 1 is molded of plastic to have a cavity. Further, since the flying distance of the ball and the difficulty of play can be varied by adjusting the injection amount of liquid to vary the weight of the ball, players can all enjoy on either narrow or wide course with the same par by providing handicap according to weight even if groups have a difference between skill.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a golf ball with brake wings used in modified golf, which is a new type of sport that is similar to regular golf but has a significantly shorter flight distance. It is something.

[Prior art] In normal golf, the longest flight distance of a ball hit is 200 meters.
Therefore, a vast amount of land is required to construct an 18-hole course. Therefore, building a golf course is not easy and the playing costs are high. Moreover, a golf ball weighs about 45 g and flies at a considerable speed, so it is always dangerous on a golf course.

As mentioned above, regular golf requires a vast area, is expensive to play, and is dangerous, so not everyone can enjoy it casually.

Therefore, a new type of golf (hereinafter referred to as "new golf") that does not take up as much space as regular golf, allows you to enjoy a play that is similar to regular golf, and has almost no danger even if the ball hits the human body. ) was developed.

As shown in Fig. 3, the ball used for this new type of golf has a hollow plastic ball body 1 with numerous depressions 1a on its surface, which expands toward the outer end like a badminton shuttlecock. A brake blade 2 that is open and has a plurality of fins 3 in the longitudinal direction of its outer surface is fixed at its base 4 mainly with screws.

[Problem to be solved by the invention]

Even if you shoot the above ball like normal golf,
It is braked by brake wings and flies only a short distance, and its flying speed is slow, so even if it were to hit a person, it would not cause injury. In addition, the brake blades have fins, so they can be flown in a relatively stable posture.

However, since the ball body is manufactured in a hollow shape, it is light in weight and highly safe, but it also increases the flight distance and may cause a Dutch roll when flying. Therefore, depending on the type of competition and the level of skill of the athlete, it may be unsatisfactory.

The present invention has a weight that allows even relatively advanced skill holders to play satisfactorily, and is equipped with damping wings that can change the weight and allow the flight to be carried out in a stable posture. Its main purpose is to provide golf balls.

In addition, in conventional golf balls with brake vanes, the ball body and brake vanes are primarily fixed with screws as described above, so a boss is provided protruding from the inner surface of the base of the brake vane, and a screw is inserted through a washer. I had stopped it.

Another object of the present invention is to provide a base structure that can reduce the number of parts by eliminating washers.

[Means for Solving the Problems] In order to achieve the above object, the golf ball with brake wings of the present invention has a hollow ball body made of plastic with a number of depressions on the surface, and a shuttlecock-like structure at the outer end. A golf ball having a brake blade fixed at its base that expands toward the outside and has a plurality of fins in the longitudinal direction of the outer surface,
A liquid is injected into the hollow part of the ball body.

In addition, the brake blade has three gaps in the net forming the blade, and a boss protruding inside the base of the blade and an outer shell part are connected by four or more ribs.

[For production]

By injecting liquid into the hollow part of the ball's body, the weight of the ball, especially the weight of the ball itself, becomes heavier, allowing the ball to fly far at considerable speed while maintaining a stable posture, allowing the player to fully enjoy the thrill of play. can.

〔Example〕

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the golf ball with brake wings of the present invention, and FIG. 2 is a sectional view of the same essential part.

In Figure 1.2, the ball body 1 is hollow and made of plastic, and by adjusting the amount of liquid injected and changing the weight of the ball, the flight distance of the ball and the difficulty of play can be changed. This allows everyone to have fun on a narrow course with the same par as on a wide course, and by handicaping groups with different techniques (or rain) based on their weight.

In addition, three gaps are provided in the net that forms the brake blades, which prevents the inside of the brake blades from becoming a vacuum, allowing the aircraft to fly in a stable posture.

Furthermore, the boss protruding from the inner surface of the base of the brake blade that fixes the ball body and the brake blade is connected to the outer shell by four or more ribs, which improves the strength of the boss and makes it easy to screw it together. It is easy to assemble as there is no need to use a washer.

The outer diameter d is approximately 40 mm. As with a normal golf ball, a large number of shallow buds la are provided on the surface, and a water-soluble resin in the form of jelly is injected into the hollow part lb to fill it.

The brake blade 2 is also made of plastic and expands toward the outer end (upper part of FIG. 1) like a badminton shuttlecock, and the protrusion 1c of the ball body 1 is fitted into the hole 4a of the base 4. It is fixed to the ball body 1 with screws 5.

The brake blade 2 is constructed by stretching a fine net 2b between each of a plurality of ribs 2a (15 ribs in this embodiment) extending from the base 4 toward the outer end. Although the rib 2a is formed as shown in FIG.
The fins 3 extend outward at appropriate intervals.
are provided (in this embodiment, 5
fins 3 are provided).

In addition, the net 2b is provided with gaps 2C at two locations: a portion continuing to the base 4, an intermediate portion, and a portion slightly apart from the tip.

The ball body 1 and the brake blade 2 are fixed by fitting the protrusion 1c formed on the ball body 1 into the hole 4a provided in the base 4 of the brake blade 2 as described above, and fixing the ball body 1 with adhesive or other method. However, it is preferable to fix with screws 5 as in this embodiment because it can be fixed more reliably.

In order to fix the screws 5, as shown in FIG. Screw in screw 5.

At this time, a large number of ribs were provided between the boss 6 and the outer shell portion 4b of the base 4 (in this embodiment, eight ribs were provided although they are not shown in the drawings), so a washer was inserted. It is not necessary to provide strength, and only screwing with the screws 5 is sufficient.

Four or more ribs are required to maintain sufficient strength.

The golf ball with brake wings having the above configuration has a total length of approximately 10 mm.
5mm, the diameter of the outer end of brake blade 2 is approximately 65 carp, fin 3
The diameter D2 of the circle passing through the outer end of the ball is approximately 85 mm (therefore, the overhang length of the fin 3 at the outer end is approximately 10 mm), the total weight is approximately 45 g, and the weight of the ball body 1 is 32 g (
The outer diameter of the ball body 1 is approximately 40 mm as described above)
.

When a test shot was conducted using the golf ball with brake wings of the present invention, it was found that it not only carried a considerable distance compared to a lighter ball, but also flew in a manner suitable for various techniques, and moreover, it flew in a Dutch manner when flying. Because it flew in a stable position without rolling, even those with advanced skills (rain) could play satisfactorily, and it was also less dangerous.

In addition, when assembling the ball body and the brake blade 2 after forming them, it is only necessary to screw in the screw 5, and there is no need to insert a washer, so the work efficiency is high, and even if the ball body is struck a considerable number of times, it will not break from this part. That never happened.

In the above structure, the liquid injected into the hollow part 16 of the ball body 1 may be, for example, water, but the water-soluble resin made into a jelly as described above does not leak or evaporate, and the amount of injection can be adjusted. This is the most preferred because it is easy.

The fins 3 of the brake blades 2 are used to prevent the ball from rolling or swinging due to crosswinds during a shot, and also to prevent the ball from rolling when falling onto a slope or when making a shot on a slope. This is to prevent

Therefore, it is desirable that the dimensions of each part be such that when the outer tips of the two fins 3 touch a flat surface and are left still, the outer ends of the screws 2b do not come into contact with the flat surface.

For this reason, the number of fins 3 is preferably 5 to 6 and most preferably 5. Also, the diameter of the outer end of the brake blade 2 (net 2b) is 60 to 70 m, and the overhang length l of the fin 3 is 7
It is preferable to set the length to ~12 mm (the overhang length 2 of the fins 3 is also related to attitude control during flight). Furthermore, the total length is 1
00-110mm is good.

Although the total weight can be freely changed within the range of 32 to 45 g, the optimal weight is 43 to 45 g when the ball body 1 is filled with liquid, and the dimensions of the above-mentioned parts are determined based on this.

Furthermore, the gap 2c provided in the net 2b of the brake blade 2 is for preventing the ball from doing a Dutch roll when it flies.

As a result of various trial shots and experiments, it was found that even if a fin 3 is provided, it is not possible to prevent a ball from Dutch rolling when flying, even if a fin 3 is provided, in which the ball has no air gap 2C and has damping blades 2 with a net 2b stretched over the entire surface. This was thought to be because a vacuum state is generated inside the brake blade 2 when the ball flies. Therefore, by providing the three voids 2c in the net 2b as described above, Dutch roll can be prevented.

As a result of experiments, it is optimal to provide the gaps 2C at three locations.

[Effect of idea]

Since the present invention is configured as described above, it produces the effects described below.

By injecting a liquid, especially a jelly-like water-soluble resin, into the hollow part of the ball body, the weight of the ball can be increased or decreased without changing the external structure or dimensions, making it possible to increase or decrease the difficulty of the same course without changing the course. It is something that many people can enjoy at the same time by changing their gender or handicap.

In addition, by creating three air gaps in the net of the brake blade, it is possible to fly a considerable distance at a considerable speed with a stable posture, and it is now possible to enjoy playing according to the technique. .

Furthermore, since five to six fins are provided on the brake blade, it is possible to prevent the blade from moving on a slope and to stabilize the positioning during a shot.

Furthermore, when fixing the ball body and the brake blade, the boss protruding inside the base of the brake blade and the outer shell of the base are connected with four or more ribs, which improves the strength of the boss and prevents screws from attaching. The fixation is even stronger, and washers are no longer required, reducing the number of parts and improving assembly efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is a sectional view of the main part, and FIG. 3 is a perspective view of a conventional device.

Claims (6)

[Claims] (1) A hollow plastic ball body with many indentations on the surface, and a brake blade that expands toward the outer end like a shuttlecock and has multiple fins in the longitudinal direction of the outer surface, is attached at the base of the ball body. What is claimed is: 1. A golf ball with brake vanes that is fixed and has a brake vane, characterized in that a liquid is injected into a hollow portion of the ball body. (2) The golf ball with brake wings according to claim 1, wherein the number of fins is 5 to 6. (3) The golf ball with brake vanes according to claim 1 or 2, wherein a liquid made of a jelly-like water-soluble resin is injected into the hollow part of the ball body. (4) The golf ball with brake vanes according to claim 3, wherein the amount of liquid injected can be freely adjusted. (5) The golf ball with brake vanes according to claim 1, wherein the net forming the brake vanes has three gaps. (6) The golf ball with brake vanes according to claim 1, wherein the boss protruding from the base of the brake vane and the outer shell of the base are connected by four or more ribs.