JP2006223471A - Golf club head and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club head capable of preventing occurrence of sounding at the time of swinging the golf club head or the like by fixing dust and a part of members inside the club head in a hollow structure to the inner wall surface of the golf club head, and to provide its manufacturing method. <P>SOLUTION: A part of the inner surface 1a of the golf club head 1 is coated with a coating material 4 whose thickness is 10-60μm. For the coating material 4, a polyester resin, an acrylic resin, a urethane resin, and an epoxy resin, etc., are used. The resins may be colored, colorless or translucent. The rubber-like one is used for a resin material, damages inside the golf club head 1 are prevented and vibrations are attenuated. Additionally, an anticorrosive material is mixed in the resin material and rust inside the golf club head 1 is prevented. Further, metal powder or the like is mixed, the resin material of large specific gravity is used, and it is made possible to adjust the centroid position of the golf club head 1 or the like and improve an inertia moment as well. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a golf club head and a manufacturing method thereof, and more specifically, in a hollow golf club head, it is possible to effectively prevent generation of noise due to foreign matter in the golf club head when the golf club head is used. The present invention relates to a golf club head and a manufacturing method thereof.

  Currently, commercially available golf club heads with a hollow structure include putter golf club heads, wood golf club heads, iron golf club heads, etc., and the material composition thereof is resin, metal or a composite head of resin and metal. Etc. are known (see, for example, Patent Document 1).

  One of the problems with such a golf club head having a hollow structure is that, when the golf club head is shaken, a sound is generated when a foreign object entering the golf club head collides with the inner wall of the golf club head. This noise may disturb the user's and athlete's concentration and cause discomfort.

  The cause of this noise is that a part of the material in the hollow golf club head is peeled off by the impact at the time of hitting, and a part of such dust and members move around the hollow inside of the golf club head when the golf club head swings. It is presumed that sound is generated by colliding with the inner wall surface of the golf club head.

In order to prevent such noise, there is also a method for preventing noise by injecting an adhesive on the back side of the sole of the golf club head and attaching a part of the dust or member to the adhesive. Although it has been proposed, if dust or a part of the member has a large specific gravity, for example, a metal piece or welding scrap, it can sufficiently adhere to the adhesive material as described above to prevent noise. However, resin heads and composite heads that have been increasing in recent years (for example, carbon fiber reinforced plastic (CFRP) heads, such carbon fiber reinforced plastic plates, or heads bonded with light specific gravity metals) have a specific gravity. There was a problem that small resin or carbon fiber remained inside the head and did not adhere sufficiently to the adhesive material, and these gathered together to produce a sound.
JP-A-8-112379

  The present invention has been devised by paying attention to such conventional problems, and a part of dust and members in a hollow golf club head is fixed to the inner surface of the golf club head during the manufacturing process of the golf club head. It is an object of the present invention to provide a golf club head and a method for manufacturing the same that can effectively prevent the generation of noise during swinging of the golf club head.

  In order to achieve the above object, the present invention is summarized in that at least a part of the inner surface of the golf club head is coated with a coating material.

  Here, it is also possible to use a rubbery resin material as the coating material, and use a resin material having a rust prevention function or a resin material having a large specific gravity as the coating material.

  Further, the hollow golf club head is a resin, metal, or a composite head of resin and metal, and the hollow golf club head is a wood golf club head or an iron golf club head. is there.

  Further, the golf club head manufacturing method of the present invention is such that after molding the golf club head, an air gun nozzle is inserted into the golf club head through a hole formed in the golf club head, and the golf club head or air gun is turned or inclined. Then, the gist is to apply a coating material having a predetermined thickness in the golf club head.

  Here, the coating thickness of the coating material is set to an arbitrary thickness according to the purpose of the golf club head. In this way, by coating the inner surface of the golf club head with the coating material, it is possible to fix a part of dust and members in the hollow golf club head to the inner surface of the golf club head during the manufacturing process of the golf club head. It is possible to effectively prevent the generation of noise when swinging the golf club head.

  According to the present invention, after forming the golf club head as described above, an air gun nozzle is inserted into the golf club head from a hole formed in the golf club head, and the golf club head or the air gun is turned or inclined so as to make the golf club head. By applying a coating material of a certain thickness inside, it is possible to prevent the generation of sound when swinging the golf club head, etc., and to disturb the concentration of the user and the player, and to give an uncomfortable feeling There is an effect that can be prevented.

  Also, the coating material can be used to prevent damage within the golf club head by using a rubbery resin material, using a resin material with a rust prevention function, or using a resin material with a higher specific gravity. Further, it is possible to attenuate the vibration, prevent the occurrence of rust in the golf club head, adjust the position of the center of gravity of the golf club head, and improve the moment of inertia.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a plan view of a wood golf club head embodying the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line BB in FIG. In the embodiment, a golf club head 1 is shown as a composite head in which a main body portion 2 made of a hard light metal such as titanium and a CFRP (carbon fiber reinforced plastic) sheet are bonded to a crown portion 3.

  Note that the present invention is not limited to this embodiment, and can be applied to a wood golf club head made of a metal material alone, a wood golf club head made of a resin material alone, an iron golf club head, or a putter golf club head. The club head and the iron golf club head are effective in the embodiment of the present invention because the impact by hitting is relatively large and a part of the material in the hollow golf club head may be peeled off.

  In the embodiment of the present invention, at least a part of the inner surface 1a of the golf club head 1 is coated with a coating material 4 having a predetermined thickness, for example, 10 to 60 μm. By setting the coating thickness of the coating material 4 within the above range, it is possible to obtain more effective dust adhesion with a more effective material amount.

  As the coating material 4, a resin material such as a polyester resin, an acrylic resin, a urethane resin, or an epoxy resin can be used. These resins may be colored, colorless, or translucent.

  Further, if a rubber material is used as the resin material, it is possible to prevent damage in the golf club head 1 or to attenuate the vibration. If a resin material is mixed with a rust preventive material, the golf club can be prevented. It is also possible to exert the rust prevention function in the head 1. Further, by mixing a metal powder or the like and using a resin material having a large specific gravity, it is possible to adjust the position of the center of gravity of the golf club head 1 and to improve the moment of inertia.

  Further, as a method for applying such a resin material, in the manufacturing process of the golf club head 1, a hole 6 formed in the sole portion 5 (for example, a hole for attaching a weight), a through hole in the hosel portion 7, or the like. 2 and 3, the nozzle 8 a of the air gun 8 is inserted, and the golf club head 1 or the air gun 8 is turned or inclined to apply the coating material 4 having a predetermined thickness in the golf club head 1. Is.

  The coating thickness of the coating material 4 can be set to an arbitrary thickness according to the purpose of the golf club head as described above, and can be applied to the whole or a part of the inner surface 1a of the golf club head 1. is there. As described above, in the manufacturing process of the golf club head 1, at least a part of the inner surface 1 a of the golf club head 1 is coated with the coating material 4, so that dust or a part of the members in the golf club head 1 having a hollow structure can be obtained. It can be fixed to the inner wall surface of the golf club head 1 during the manufacturing process, and can effectively prevent the generation of noise when the golf club head 1 swings.

It is a top view of the wood golf club head which implemented this invention. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Golf club head 1a Inner surface 2 Main-body part 3 Crown part 4 Coating material 5 Sole part 6 Hole 7 Hosel part 8 Air gun 8a Nozzle

Claims (8)

In a golf club head having a hollow structure,
A golf club head, wherein at least a part of an inner surface of the golf club head is coated with a coating material. The golf club head according to claim 1, wherein the coating material is a rubbery resin material. The golf club head according to claim 1, wherein the coating material is a resin material having a rust prevention function. The golf club head according to claim 1, wherein a resin material having a large specific gravity is used as the coating material. 5. The golf club head according to claim 1, wherein the hollow golf club head is a resin, metal, or a composite head of resin and metal. The golf club head according to claim 1, wherein the hollow golf club head is a wood golf club head or an iron golf club head. In the manufacturing method of the golf club head having a hollow structure,
After molding the golf club head, an air gun nozzle is inserted into the golf club head through a hole formed in the golf club head, and the golf club head or air gun is swung or inclined to coat the golf club head with a predetermined thickness. A method for producing a golf club head, comprising applying a material. The golf club head manufacturing method according to claim 7, wherein the coating thickness of the coating material is set to an arbitrary thickness according to the purpose of the golf club head.

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