JPH04146773A - Grip for golf club - Google Patents

Abstract

PURPOSE:To suppress a slip due to sweat and obtain excellent durability and appearance quality by mixing the powder made of vulcanized rubber or leather in a base material made of thermoplastic resin. CONSTITUTION:The powder 6 made of vulcanized rubber or leather is mixed in a base material made of thermoplastic resin 5 with proper elasticity, and a mixture is integrally molded by injection molding, for example, to form a grip 3. Polish machining is applied on the surface after molding to positively expose the powder 6 on the surface. Vinyl chloride resin, styrene resin, olefin resin, urethane resin and the like, for example, may be used as appropriate for the thermoplastic resin 5. Solid rubber powder or sponge rubber powder may be used for the powder 6. The powder 6 in the synthetic resin base material 5 is invariably exposed on the surface by the polishing of the surface or the abrasion during usage, it is brought into contact with fingers, thus a slip can be suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to improvements in grips attached to the shaft ends of golf clubs.

Conventional technology Conventional grips for golf clubs are most commonly made of natural rubber or synthetic rubber, formed into a long, slender cylindrical shape, but such rubber grips have poor weather resistance. It has the disadvantage of being low and prone to cracking over time. Therefore, it has been considered to mold the grip from a synthetic resin having elasticity, but since the surface of the synthetic resin is slippery, it is extremely rarely put into practical use.

In order to prevent such slippage of the grip, for example, Japanese Utility Model Application No. 62-24859 discloses that whiskers of ceramics or the like are mixed into the base material such as urethane rubber, and the difference in hardness between the base material and the base material makes the surface difficult to grip. A structure in which fine irregularities are formed has been proposed. Also, Jitsukai Showa 60-1
No. 82081 discloses a grip whose surface is coated with an anti-slip material such as diamond sand or glass powder.

Problems to be Solved by the Invention However, in the former case where ceramic whiskers are blended into the base material, physical properties such as tear strength tend to decrease due to the orientation of the fibers, and ceramic whiskers have poor moisture absorption and desorption properties. , hardly any effect on suppressing slippage caused by sweat can be expected.

Furthermore, the latter configuration has the disadvantage that it not only looks bad, but also becomes ineffective if the anti-slip powder falls off the grip surface after a certain period of use.

Means for Solving the Problems The golf club grip according to the present invention is characterized in that powder made of vulcanized rubber or leather is mixed into a base material made of thermoplastic resin.

Effect With the above configuration, the powder in the resin is exposed on the grip surface and gets caught on the fingers, making it difficult to slip. In particular, vulcanized rubber and leather have excellent moisture absorption and release properties, which suppresses slippage caused by sweat. Further, like the base material, vulcanized rubber and leather are elastic bodies, and cause less discomfort to the hands and fingers.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings.

Fig. 2 shows the overall configuration of a golf club, in which a head 2 such as an iron is fixed to the tip of a shaft 1 made of steel, carbon, etc., and an elongated substantially cylindrical grip 3 is attached to the base end of the shaft 1. is installed.

The grip 3 has a gently tapered shape as shown in FIG. 1, has a mounting hole 4 closed at one end, and is fitted onto the shaft 1 with, for example, double-sided tape (not shown).

The grip 3 is made of a thermoplastic resin 5 having appropriate elasticity as a base material, mixed with powder 6 made of vulcanized rubber or leather, and integrally molded, for example, by injection molding. Further, in order to positively expose the powder 6 on the surface, the surface is polished after molding.

As the thermoplastic resin 5, appropriate resins such as vinyl chloride, styrene, olefin, urethane, etc. can be used.

Further, the powder 6 may be solid rubber powder (for example, pulverized tires can be used) or sponge rubber powder. The particle size is 5 to 10 mesh.
0 meshes, preferably about 20 to 30 meshes. If a mesh larger than 5 mesh is mixed into the synthetic resin base material 5, the bow tearing strength, tensile strength, etc. will be significantly reduced, and it will be difficult to mix it in an amount sufficient to obtain a sufficient anti-slip effect. On the other hand, if the mesh is smaller than 100 meshes, the deterioration in physical properties will be small, but the grip on the fingers will be poor and the anti-slip effect will not be obtained.

The amount of the powder 6 added to the synthetic resin base material 5 is 0°1 to 3
It may be about 0% (weight ratio), preferably about 5 to 15% (weight ratio). The amount added is related to the particle size of the powder 6 as described above, and it is desirable to reduce the amount added for coarse powder 6 with a small mesh value.

In addition, there does not have to be a difference in the hardness of the vulcanized rubber that becomes the powder 6 and the hardness of the synthetic resin base material 5, but it is possible to increase the hardness of the vulcanized rubber so that there is a difference of 10° (JIS-A) or more. It is even more preferable.

According to the grip 3 configured as described above, the powder 6 in the synthetic resin base material 5 is constantly exposed to the surface due to polishing of the surface or wear due to use, and comes into contact with the fingers. Therefore, the powder 6, such as vulcanized rubber, gets caught on the fingers and slipping can be suppressed. In particular, vulcanized rubber and leather have moisture absorbing and releasing properties, so they are less likely to slip due to sweat from your hands. In addition, since vulcanized rubber and leather are elastic bodies like the base material 6, there is little discomfort on the hands and fingers. Incidentally, since the polished or worn surface itself is smooth in its free state, it has excellent appearance quality.

Next, specific examples will be shown.

Example 1 10% (weight ratio) of 25 mesh vulcanized rubber powder with a hardness of 70° was added and mixed to a polyolefin thermoplastic resin with a hardness of 54° (JIS-A, the same applies hereinafter), and a grip was formed by injection molding. was molded. Then, the surface was polished with an abrasive.

Example 2 A polyolefin thermoplastic resin having a hardness of 54° was mixed with 7 meshes of sponge rubber powder at 5% (weight ratio), and a grip was molded by injection molding. Then, the surface was similarly polished using an abrasive.

Although this grip had some unevenness due to the sponge rubber powder on its surface compared to the grip of Example 1, there was no problem with the feel and a very good anti-slip effect was obtained.

Example 3 10% (weight ratio) of leather powder having an average particle size of 12 μm was added and mixed to a polyolefin thermoplastic resin having a hardness of 54°, and a grip was formed by injection molding. Then, the surface was similarly polished using an abrasive.

In this product, the leather powder on the surface was raised by polishing and became suede-like, so a grip with good texture and excellent moisture absorption was obtained. Note that this leather powder may be natural or artificial.

Effects of the Invention As is clear from the above explanation, the golf club grip according to the present invention is made of synthetic resin because powder made of vulcanized rubber or leather is mixed into the base material made of thermoplastic resin. It is possible to suppress slippage caused by sweat, which is a disadvantage of grips, and to supply grips with excellent durability and appearance quality at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view of a grip according to the present invention, and FIG. 2 is a plan view of the entire golf club. 3... Grip, 5... Thermoplastic resin, 6... Powder.

Claims (1)

[Claims] (1) A golf club grip characterized in that powder made of vulcanized rubber or leather is mixed into a base material made of thermoplastic resin.