JPH11226161A - Stick for mallet golf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fly a ball to a long distance by effectively utilizing material quality of ball hitting members, to fly the ball even to a short distance with excellent controllability, and to make the installing part of the ball hitting members undeformable. SOLUTION: This stick is composed of a shaft 2 having a grip 1 in the upper part and the cylindrical ball hitting part 3 fixed to the lower end of the shaft 2 so as to cross at a right angle to the shaft so that ball hitting members 5, 6 different in material qualities are fixed to both end surfaces of the cylindrical ball hitting part 3. In the material qualities of the ball hitting members, one is formed of titanium, and the other is formed of aluminum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stick dedicated to mallet golf.

[0002]

2. Description of the Related Art Mallet golf is one of the recreations that can be enjoyed by the elderly and young people.
This is a sport similar to golf played by using a ball having the same size and the same weight as a ball used in a gate ball, using the rules of golf. Since the diameter of the ball used is larger than that of a golf ball, it is a sport that does not necessarily require a leveled facility such as golf and can be enjoyed easily on a square or a ski resort in summer. In addition, since a ball can be made to fly as far as golf, it can be enjoyed a sensation that can not be enjoyed with a gate ball at all, and has recently been rapidly spreading as a sport having both advantages of golf and a gate ball.

FIG. 4 shows a stick used for mallet golf. In FIG. 1, a mallet golf stick 10 has a metal pipe 12 which is a shaft having a grip 11 at an upper part, and a hollow pipe fixed to a lower end of the metal pipe 12 so that the axis of the metal pipe 12 and its central axis are orthogonal to each other. And a cylindrical hitting portion 13. The diameter of the metal pipe 12 is gradually reduced from the upper part to the lower part, and the tip is fixed to the inner peripheral surface of a sleeve 14 formed in the cylindrical hitting part 13. In addition, metal pipe 1
The metal pipe 12 is fixed to the cylindrical hitting portion 13 by fastening the tip portion of the cylindrical hitting portion 13 with a screw 15 larger than the inner diameter of the sleeve 14. I have.

On both end surfaces of the cylindrical hitting portion 13, a hitting member 16, which is formed of aluminum in a cylindrical shape,
16 is screwed. The hitting members 16, 16 have a vertical circular surface perpendicular to the central axis of the cylindrical hitting portion 13, receive a strong impact when hitting the ball, and fly the ball with its resilience.

[0005]

However, in the mallet golf stick described above, even if a ball 4 to 5 times as large as a golf ball and having a heavy weight is hit with the aluminum hitting member 16 as hard as possible, However, since the hardness is low due to aluminum, the resilience is insufficient, and even if the force is applied, the flight distance of the ball is about 100 m, and there is a problem that the ball does not fly too far. Therefore, since the hitting members 16, 16 try to hit the ball as hard as possible in order to fly far, the impact at the time of hitting is increased, and the impact causes the hitting members 16, 1, as shown in FIG.
6 and mounting portions 13b, 13 on both sides of the cylindrical hitting portion 13.
b, an impact is transmitted, and the thin mounting portions 13b, 13b are deformed. Further, the distal end of the metal pipe 12 is attached to the cylindrical hitting portion 13.
However, since the thickness of the outer periphery is not so large, the mounting strength of the metal pipe 12 is inferior,
There was also a risk that the shaft 2 would come off or be broken from the root due to a violent blow.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional mallet golf stick described above. The ball can be made to fly a long distance by effectively utilizing the material of the hitting member, and the ball can be moved to a short distance. An object of the present invention is to provide a mallet golf stick that can fly with good control and does not deform the mounting portion of the hitting member.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a shaft provided with a grip on an upper part,
A cylindrical hitting portion fixed to the lower end of the shaft so as to be orthogonal to the shaft, and on both end surfaces of the cylindrical hitting portion, a hitting member having the same outer diameter as the cylindrical hitting portion and a different material is used. It is characterized by being fixed. Further, the material of the hitting member is characterized in that one is titanium and the other is aluminum. Further, the hitting member has the same outer diameter and the same weight. Further, a buffer groove is formed on the mating surface between the cylindrical hitting portion and the hitting member over the entire circumference of the cylindrical hitting portion. Further, a slope is formed on an end surface of at least one of the hitting members on the hitting side.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway front view showing a mallet golf stick according to the present invention, FIG. 2 is a front view showing another embodiment of a mallet golf stick, and FIG.
FIG. 3 is an explanatory view showing a use state of the mallet golf stick of FIG. 2.

As shown in FIG. 1, a mallet golf stick A according to the present invention has a shaft 2 provided with a grip 1 at an upper portion, and a lower end of the shaft 2 such that the axis of the shaft 2 and its central axis are orthogonal to each other. And a cylindrical hitting portion 3 fixed to the ball. The grip 1 has a thick rubber-covered cylinder fitted to an upper portion of a shaft 2. The shaft 2
It is formed of steel, aluminum, carbon fiber, glass fiber, or the like, and its diameter is reduced gradually from the upper part to the lower part. The lower end part is fitted to the central part of the cylindrical hitting part 3 via the hosel 4 which is a joint. Is being worn. The hosel 4 connects the shaft 2 and the cylindrical hitting portion 3. The upper half of a hollow aluminum cylinder is formed in a conical shape, and the lower half is screwed to the cylindrical hitting portion 3. The shaft 2 is fitted into this hollow portion using an adhesive, and the male screw is screwed into the insertion hole 3a of the cylindrical hitting portion 3 using an adhesive. The shaft 2 is firmly fixed to a cylindrical hitting portion 3.

The cylindrical hitting portion 3 is made of aluminum and has a cylindrical outer shape.
b, 3c are formed. At both ends of the lumens 3b, 3c, mounting portions 3 having female threads are respectively formed.
d, 3e are formed. A hitting member 5 made of titanium is fixed to one attachment portion 3d, and a hitting member 6 made of aluminum is fixed to the other attachment portion 3e. A thick portion 3f is formed at the center of the cylindrical hitting portion 3, and the strength of the cylindrical hitting portion 3 is reinforced by the thick portion 3f. A hosel 4 as a mounting member for the shaft 2 is attached to the thick portion 3f in a direction orthogonal to the axial direction of the cylindrical hitting portion 3 to a depth reaching approximately ／ of the thick portion 3f. An insertion hole 3a for screwing is formed, and a male screw of the hosel 4 is screwed to a female screw formed in the insertion hole 3a. Since the shaft 2 is deeply inserted and held in the thick portion 3f, the mounting strength of the shaft 2 is increased, and it is possible to prevent an accident that the shaft 2 comes off or breaks from a root due to a severe impact.

One hitting member 5 fixed to the cylindrical hitting portion 3 is made of titanium, and has the same outer diameter as the cylindrical hitting portion 3 and an aluminum hitting member 6 described later. The weight of the aluminum ball hitting member 6
In order to make the balance substantially equal, a lumen 5a is formed inside. This is because, if the outer diameter of the titanium hitting member 5 and the aluminum hitting member 6 is the same, the specific gravity of aluminum is as small as 2.7 with respect to the specific gravity of titanium, which is 4.5. Since a problem occurs in that the ball loses its balance when struck and the flight distance of the ball does not increase, the hitting member 5 made of titanium is hollowed out to reduce the weight in order to prevent this. Since the titanium striking member 5 is made of a hard material, it has a high resilience at the time of hitting. Even if the same player hits the ball with the same striking force, the hitting member 5 has a greater flight distance than the aluminum striking member 6 and can fly 150 m or more. It is possible.

The other hitting member 6 is formed in a cylindrical shape from solid aluminum, and has the same outer diameter as the cylindrical hitting portion 3 and the hitting member 5 made of titanium. Half of the hitting member 6 is formed as a large diameter hitting portion 6a, and the other half is formed as a screwing portion 6b having a slightly smaller diameter and formed with an external thread. The hitting member 6 made of aluminum has a lower resilience than the hitting member 5 made of titanium, so that the ball does not fly easily.

The hitting member 5 made of titanium thus formed
The aluminum ball hitting member 6 is screwed to the mounting portions 3d and 3e at both ends of the cylindrical ball hitting portion 3 using an adhesive. Further, after the hitting member 5 and the hitting member 6 are screwed together, buffer grooves 7 and 8 are formed on the mating surface of the cylindrical hitting portion 3 and the hitting member 5 or the hitting member 6. When the impact received by the hitting member 5 or the hitting member 6 at the time of hitting is directly transmitted to the mounting portions 3d and 3e, the thin mounting portions 3d and 3e are deformed in the buffer grooves 7 and 8 so that the impact is not transmitted directly. And a buffer groove. The buffer grooves 7, 8 are formed with a width of 1 mm and a depth of 0.5 mm, but may be larger than these dimensions.

The mallet golf stick A thus configured has a high resilience because one of the hitting members 5 is made of titanium, so that the use of the titanium hitting member 5 allows the ball to fly far away. It becomes possible. In addition, since aluminum is used for the other hitting member 6, the ball does not fly so much. Therefore, this hitting member 6 made of aluminum is suitable for a short distance approach. Further, since the buffer grooves 7, 8 are formed on the mating surface between the cylindrical hitting portion 3 and the hitting member 5 or hitting member 6, the impact received by the hitting member 5 or hitting member 6 is reduced, and the cylindrical hitting member 6 is hit. Since it is not directly transmitted to the thin mounting portions 3d and 3e of the portion 3, the mounting portions 3d and 3e can be prevented from being deformed.

Next, the mallet golf stick B shown in FIGS. 2 and 3 will be described. The mallet golf stick B has a hitting surface of one of the hitting members 9 formed on an inclined surface obliquely intersecting the center axis, and a plurality of lateral grooves 9a, 9a. ·have. Further, a tip portion 9b of the slope is formed in an arc shape. If the hitting member 9 is used, the ball flies in the direction of the arrow, so that it is easy to escape from, for example, a bunker. In addition, in this mallet golf stick B, as shown in FIG. 3, the ball hitting member 9 is attached at an inclination angle of [theta] to the vertical direction of the shaft 2. The angle θ is an angle at which the mallet golf stick B is inclined with respect to the vertical direction when the player hits the ball. By using the mallet golf stick B, the player can accurately fly the ball in the target direction. Can be.

[0016]

As described above, the present invention relates to a mallet golf stick comprising a shaft provided with a grip on an upper portion and a cylindrical hitting portion fixed to a lower end of the shaft so as to be orthogonal to the shaft. A hitting member, one of which is titanium and the other is made of aluminum, is fixed to both end surfaces of the cylindrical hitting portion, and the hitting member has the same external dimensions and almost the same weight. Since the power is strong and the ball can be made to fly far away, the effect of doubling the pleasure of mallet golf is achieved. Further, if an aluminum hitting member is used, the ball does not fly so much, so that this aluminum hitting member has an effect that an approach at a short distance can be accurately performed. Also, by forming a buffer groove on the mating surface of the cylindrical hitting portion and the hitting member, the impact received from the hitting member is reduced, and the thin mounting portion of the cylindrical hitting portion is deformed. Can be prevented. In addition, a thick portion is formed at the center of the cylindrical hitting portion, and since the thick portion of the shaft is inserted deeply and held, the mounting strength of the shaft is improved. . Further, since an inclined surface is formed on an end face of at least one of the hitting members, the player can accurately hit the ball in a sideways direction, thereby further enhancing the enjoyment of mallet golf. Is played.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a mallet golf stick according to the present invention.

FIG. 2 is a front view showing another embodiment of the mallet golf stick according to the present invention.

FIG. 3 is an explanatory view showing a use state of the mallet golf stick of FIG. 2;

FIG. 4 is a partially broken front view showing a conventional mallet golf stick.

FIG. 5 is an explanatory view showing a problem of a conventional mallet golf stick.

[Explanation of symbols]

 Reference Signs List A Mallet golf stick B Mallet golf stick 1 Handgrip 2 Shaft 3 Cylindrical hitting part 3a Insertion hole 3b Lumen part 3c Lumen part 3d Mounting part 3e Mounting part 3f Thick part 4 Hosel 5 Hitting member 5a Lumen part 6 Hitting member 6a hitting portion 6b screwing portion 7 buffer groove 8 buffer groove 9 hitting member 9a lateral groove 9b tip end portion

Claims (5)

[Claims] 1. A shaft provided with a grip at an upper portion thereof, and a cylindrical hitting portion fixed to a lower end of the shaft so as to be orthogonal to the shaft, and both end faces of the cylindrical hitting portion are provided with the cylindrical hitting ball. A mallet golf stick, wherein a ball striking member having the same outer diameter as that of the part is fixed to a different material. 2. The mallet golf stick according to claim 1, wherein one of the hitting members is made of titanium and the other is made of aluminum. 3. The mallet golf stick according to claim 1, wherein the hitting members have the same outer diameter and the same weight. 4. A cushioning groove is formed on the mating surface between the cylindrical hitting portion and the hitting member over the entire circumference of the cylindrical hitting portion. The mallet golf stick according to any one of the above items. 5. The mallet golf according to claim 1, wherein an inclined surface is formed on an end surface of at least one of the hitting members on the hitting side. Stick.