JPH09117533A - Racket frame grip for badminton - Google Patents

Abstract

(57) [Abstract] [Purpose] Along with giving a good flexing action to the shaft at the time of impact, it is lightweight and suppresses and damps vibrations and resonance at impact, so that only the feel at impact when hitting the shuttle can be obtained. Provide the grip of the racket frame for badminton that was told. [Structure] Shaft 3 up to the longitudinal end of grip 4
Is a grip for a badminton racket frame, in which a hollow portion 6 is provided inside the grip 4, and the shaft 3 has the same diameter as the shaft 3 at the upper end portion of the grip 4. The shaft insertion hole 10 formed in the
In a grip having a structure in which the lower end of the grip is held and fixed by a locking member 11 that is fitted and fixed, the hollow portion 6 of the grip is filled with a resonance prevention member 14 made of an elastic material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a racket frame grip for badminton.

[0002]

2. Description of the Related Art Generally, badminton is required to have a swing that is extremely agile and fast as compared with tennis and the like. And in order to satisfy those requirements, the badminton racket frame is required to have a lightweight, yet easy-to-operate machine with moderate suppleness and a machine that enables a fast swing. To have the desired strength.

Conventionally, a badminton racket frame has a frame 22 and a shaft 23 as shown in FIG.
And the grip 2 attached to the lower end of the shaft 23.
And 4. The grip 24 is usually
The shaft 23 is made of a relatively lightweight and rigid material such as wood or foamed synthetic resin, and the shaft 23
A shaft insertion hole for receiving the lower end of
The shaft 23 is inserted and fixed in the shaft insertion hole. Although not shown, the shaft insertion hole 25 is formed in the longitudinal direction of the grip to halve about the entire length thereof to insert and fix the shaft, or as shown in FIG. 5, the total length of the grip 24. Piercing through,
It is generally found that the shaft 23 is inserted and fixed over the entire length of the grip 24.

The shaft 23 having a structure in which it is inserted and fixed through the entire length of the grip 24 in the longitudinal direction has a large bonding margin between the shaft 23 and the grip 24, and therefore the bonding strength between the shaft 23 and the grip 24 cannot be increased. Although it was possible, the bending of the shaft 23 that occurs when the shuttlecock is hit,
Since the grip part that is in close contact with the shaft is regulated, the bending of the shaft is almost eliminated,
The vibration transmitted to the shaft 23 at the time of impact is grip 2
There was a drawback that everything could be handed through 4. Therefore, recently, as disclosed in Registered Utility Model Publication No. 3009432, as shown in FIG. 6, a grip of a racket frame for badminton in which the shaft 23 is inserted up to the longitudinal end portion of the grip 24. A hollow portion 26 is formed inside the shaft 24, and the shaft 23
The shaft insertion hole 25 formed at the upper end of the grip 24 and the shaft 2 at the end of the grip 24.
A grip of a badminton racket frame having a structure in which the lower end of 3 is fitted and fixed by a locking member 27 and an intermediate portion is in a penetrating state has been proposed and is generally known.

[0005]

The grip of the racket frame for badminton having the above structure has the hollow portion 26 inside the grip 24, and the shaft 23 is held and fixed at the upper end portion and the end portion of the grip 24. Since the intermediate portion is in the loose state, the shaft 2 at the time of impact is
The flexure of No. 3 was not restricted by the grip part, and it was possible to make a racket that is flexible and easy to use. The vibration generated on the shaft 23 at the time of impact is suppressed by the shaft 23 being closely held and fixed by the shaft insertion hole 25 in the upper end region of the grip corresponding to the node of the primary vibration of the racket. Since the lower end of the shaft is held and fixed by the locking member 27 at the grip end, only a good feel when hitting the shuttle can be transmitted to the player's hand.

[0006] However, the hollow portion 26 provided in the grip 24 allows the shaft 23 to be in a play-through state in the hollow portion and does not restrict the movement of the shaft, but is in the play-through state. The shaft 23 in the hollow portion has a problem that the vibration of the shaft generated at the time of striking continues to resonate forever.
Therefore, if the shaft 23 continues to resonate for a long time, the shaft insertion hole 2 that is an adhesive portion with the shaft 23
5 and the locking member 27 accumulate fatigue, leading to a decrease in adhesive strength and causing peeling of the adhesive, and the grip 2
There is a drawback in that the adhesive and the debris of the grip are peeled off in the hollow portion 26 of No. 4, and the peeled debris and the like move around in the hollow portion 26 to generate noise. Furthermore, if the resonance at the time of hitting continues to vibrate for a long time, not only may the player's hand feel uncomfortable at the time of hitting, but there is also a fear that the long-term use may cause an injury such as a tennis elbow.

Therefore, the present invention improves the grip of the racket frame for badminton, especially the connecting structure with the shaft, thereby giving a good flexing action to the shaft at the time of impact, and at the same time, it is lightweight and vibrates at the time of impact. An object of the present invention is to provide a grip for a racket frame for badminton that suppresses and damps resonance and transmits only the shot feeling when hitting the shuttle to the hand.

[0008]

In order to achieve the above object, the present invention has the following constitution. That is, the present invention is a grip of a racket frame for badminton in which a shaft is inserted and attached to a longitudinal end portion of the grip, wherein the grip has a hollow portion, and the shaft has an upper end portion of the grip. With the shaft insertion hole formed to have substantially the same diameter as the shaft, and the end portion of the grip,
In a grip having a structure in which a lower end of the shaft is held and fixed by a locking member that is fitted and fixed, a hollow portion of the grip is filled with a resonance preventing member made of an elastic material.

The resonance preventing member filled in the hollow portion of the grip is disposed in the whole or a part of the hollow portion in close contact with the shaft, and the bending movement of the shaft when hitting the hollow portion. In order not to be restricted by the above, it is preferable to be formed from a soft elastic material. For example, examples of preferred materials include soft foam, soft rubber, or elastomers and combinations thereof.

The shaft to be inserted into the grip having the above structure has a shaft insertion hole formed at an upper end portion of the grip having a hollow portion formed of a material having relatively rigidity, and a distal end portion of the grip. Since it is held and fixed by the locking member and the inside of the hollow portion is filled with a soft resonance preventing member, the bending of the shaft is not unnecessarily restricted.

[0011]

As described above, in the grip of the racket frame for badminton of the present invention, a hollow portion is provided inside the grip made of a material having relatively rigidity, and the shaft inserted into the grip is the grip. It is held and fixed by a shaft insertion hole formed at the upper end of the grip and a locking member attached to the end of the grip, and the middle part of the hollow part is in a loose state in the hollow part and Since the shaft is configured to be filled with a soft elastic material that does not unnecessarily restrict the movement of the shaft, the shaft can be flexed smoothly in the hollow portion when the shuttlecock is hit. It is possible to make a racket that is easy to hit and that has good smoothness characteristics.

Further, the shaft inserted into the grip is held and fixed at the upper end of the grip by a shaft insertion hole formed to have substantially the same diameter as the shaft, and the shaft is attached at the end of the grip. Since it is held and fixed by a locking member that inserts and fixes the lower end of the, the primary vibration that gives an unpleasant sensation transmitted to the player's hand during striking is suppressed at the upper end of the grip that corresponds to the node of the primary vibration. To be done. Since the hollow portion is filled with the resonance preventing member made of a soft elastic material, the vibration of the shaft transmitted to the grip at the time of impact is absorbed by the resonance preventing member, and the resonance of the shaft in the hollow portion is prevented. In addition, the locking member that is fitted and fixed to the lower end of the shaft allows only a good feel when hit to be transmitted to the grip portion, resulting in a grip excellent in shot feeling. be able to.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in FIGS. That is, the racket frame 1 having the grip structure described in the present embodiment, as shown in FIG.
Frame 2 with many guts stretched, and shaft 3
And a grip 4. The shaft 3
Is made of, for example, a FRP pipe, and the shaft 3
The upper end is connected and fixed by the frame 2 and the throat member 5, and the lower end is inserted and fixed in the grip 4.

As shown in FIG. 2, the grip 4 of the present embodiment.
Is a relatively lightweight and rigid material such as wood or FRP, and is formed to have a hollow portion 6 therein. A grip leather 7 is wound around the outer periphery of the grip 4, and a sword cap 8 is provided on the conical portion at the upper end of the grip 4, and an end cap 9 is provided on the end of the grip 4. It is configured to be installed respectively.

The grip 4 is provided with a shaft insertion hole 10 having a diameter substantially equal to that of the shaft 3 in the upper end region in the lengthwise direction, and inside the lower part thereof,
A hollow portion 6 having a diameter larger than that of the shaft insertion hole 10 is formed. The shaft insertion hole 10 is
The grip 4 has a length corresponding to the conical portion of the upper end of the grip 4, or a range from the upper end of the grip 4 to ⅓ of the total length of the grip, and the shaft insertion hole 10 and the hollow portion 6 are mutually connected. And the center thereof is formed to coincide with the center of the grip 4.

The shaft 3 is inserted through the shaft insertion hole 10 and the hollow portion 6 into the grip,
The lower end of the shaft 3 is held and fixed by a locking member 11 attached to the end of the grip 4.
The locking member 11 shown in this embodiment is formed of a material having excellent vibration damping properties, and has a frame 12 and a protrusion 13 for receiving and holding the lower end of the shaft 3 at the center of the frame 12. Has been configured integrally,
The frame 12 is formed to have an outer diameter that covers the entire width of the grip end portion, the shaft 3 is fitted and fixed in the protrusion 13, and the frame 12 is fixed to the end of the grip 4, whereby the shaft 3 is gripped. It is designed to be held and fixed on the vertical axis of the.

In the hollow portion 6 of the grip through which the shaft is inserted, a resonance preventing member 14 made of a soft urethane foam is arranged so as to fill the entire hollow portion.

Therefore, in the badminton racket having the grip 4 having the above-mentioned structure, the shaft 3 has the shaft insertion hole 10 formed in the upper end region of the grip 4 corresponding to the node of the primary vibration of bending generated in the shaft 3 at the time of impact. And a portion of the locking member 11 provided at the end of the grip are held and fixed, and an intermediate portion thereof is filled with the resonance preventing member 14 formed of a soft elastic material.
Since it is configured to have, without unnecessarily restricting the bending of the shaft 3 at the time of impact within the hollow portion 6,
Resonance can be prevented.

The resonance preventing member 14 is arranged so as to fill the entire hollow portion 6 of the grip, as described in the above embodiment, and, for example, although not shown, the hollow portion The resonance preventing member 14 may be partially arranged inside the portion 6 with an appropriate gap. As a method of disposing the resonance preventing member 14 in the hollow portion 6, a method of inserting the resonance preventing member 14 formed in a shape matching the hollow portion 6 in advance into the hollow portion 6 or disposing the shaft 3 is used. A method may be employed in which the soft foam is directly injected and filled into the void portion of the hollow portion 6 in the state, and then foam molding is performed. The material used for the resonance preventing member 14 is not limited to the soft urethane foam, and a soft foam, a soft rubber, or an elastomer and an elastic material in which these are combined are preferably used. It is possible.

[0020]

EFFECTS OF THE INVENTION The present invention having the above-mentioned structure has the following effects. That is, as shown in FIG. 3, when the player holds the grip 4 and hits the shuttle, the shaft 3 is bent by the force at the time of hitting, and the shaft insertion hole 10 which is a contact point between the shaft 3 and the grip 4 is bent. Also, two points of the end of the grip 4 where the locking member 11 with the lower end of the shaft 3 fitted and fixed are provided as fulcrums. As a result, the shaft 3 is in a loose state in the hollow portion 6, but the resonance preventing member 14 arranged in the hollow portion 6 is formed of a soft elastic material that does not unnecessarily restrict the bending of the shaft 3. Therefore, the flexure of the shaft 3 can be released in the hollow portion 6, so that the racket can be bent and easy to use.

The shaft 3 inserted in the grip 4
Is held and fixed at the upper end of the grip 4 by a shaft insertion hole 10 formed to have substantially the same diameter as the shaft 3, and securely held and fixed by a locking member 11 that fits and fixes the lower end of the shaft at the end. Therefore, the primary vibration transmitted to the hand upon hitting and giving an unpleasant feeling is suppressed at the upper end portion of the grip corresponding to the node of the primary vibration. The hollow portion 6 of the grip 4 is filled with the resonance preventing member 14 formed of a soft elastic material, and is kept in close contact with the shaft 3 inserted into the hollow portion. The vibration of the shaft can be quickly attenuated and the resonance of the shaft in the hollow portion 6 can be prevented. Further, it is possible to prevent the adhesive and the broken pieces of the grip that are peeled off in the hollow portion 6 from moving around and causing noise and the like.

[Brief description of the drawings]

FIG. 1 is an external view of a badminton racket frame of the present invention.

FIG. 2 is a sectional view of a grip according to the present embodiment.

FIG. 3 is a cross-sectional explanatory view of a grip of the present embodiment.

FIG. 4 is an external view of a conventional badminton racket frame.

FIG. 5 is a cross-sectional explanatory view of a conventional grip.

FIG. 6 is a cross-sectional explanatory view of a conventional grip.

[Explanation of symbols]

 1 Racket Frame 2 Frame 3 Shaft 4 Grip 5 Throat Member 6 Hollow Part 7 Grip Leather 8 Sword Cap 9 End Cap 10 Shaft Insertion Hole 11 Locking Member 12 Frame 13 Protrusion 14 Resonance Prevention Member 22 Frame 23 Shaft 24 Grip 25 Shaft Insertion Hole 26 Hollow part 27 Locking member

Claims (2)

[Claims] 1. A grip for a racket frame for badminton in which a shaft is inserted and attached to a longitudinal end portion of the grip, wherein the grip has a hollow portion, and the shaft has an upper end portion of the grip. In a grip having a structure in which a shaft insertion hole formed to have substantially the same diameter as that of the shaft and a locking member for inserting and fixing the lower end of the shaft at an end portion of the grip are held and fixed, a hollow of the grip is provided. A grip for a badminton racket frame, characterized in that a resonance preventing member made of an elastic material is filled in the portion. 2. The grip for a badminton racket frame according to claim 1, wherein the resonance preventing member is made of a soft foam, a soft rubber, an elastomer, or a combination thereof.