JP2001293112A - Golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head which exhibits excellent resilience, hitting feeling, strength, weather resistance, etc., required for the face. SOLUTION: The face of a driver head or an iron club head is formed of an engineering plastic comprising tough and comparatively light palyphenyl sulphone with good moldablity so as to have excellent impact resistance and good resilience for carry of a hit ball and improve ball hitting feeling. For a putter head, the head is formed of an engineering plastic comprising a polyester based thermoplastic elastomer with comparatively high hardness and rubber characteristics to acquire excellent resilience and soft ball hitting feeling to realize stable putting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head having a face surface formed by a face plate made of engineering plastic.

[0002]

2. Description of the Related Art Conventionally, iron club heads and putter heads of golf club heads are generally made of metal, but metal heads have poor elasticity and cannot provide a soft feel at impact. There is a disadvantage that. Therefore, an iron club head having a face surface formed of a fiber reinforced resin layer, and a putter head having an entire head formed of a wear-resistant synthetic resin material such as urea resin have been developed.

[0003]

However, a large impact force acts on the face surface when hitting a ball in an un-an-club head. Therefore, even if the face surface is formed of a fiber-reinforced resin layer, chipping or wear is caused. There is a problem that it cannot withstand long-term use.

On the other hand, in the putter head, since the pad is lightly put by stroking the head with a small swing, the impact force with the golf ball is small, and even if the putter head is formed of a hard synthetic resin material such as urea resin, it is broken by a hit ball. However, there is a problem that the resilience required for the putter head is low, and the weather resistance is poor, so that the putter head cannot be used for a long time.

In general, the physical properties required for the face surface of an iron club head are excellent in impact resistance and toughness, light weight, rebound force, high rigidity, and a good shot feeling. The putter head has excellent rebound resilience, provides soundproofing and a soft feel at impact, and can be used for a long time like an iron club head. .

According to the present invention, as a result of diligent studies to satisfy such a demand, it has been found that, when a face of an iron club head or a putter is formed of a certain engineering plastic among various engineering plastics, the above-mentioned demand is almost satisfied. It turned out that we could do it. Therefore, an object of the present invention is to provide a club head having excellent physical properties as described above.

[0007]

In order to achieve the above object, a golf club head according to the present invention has a peripheral portion of a head main body formed on the face side of a metal head main body. A recess is formed, and a face plate made of polyphenylsulfone or a polyester-based thermoplastic elastomer is fitted and fixed in the recess.

In the above golf club head, the invention according to claim 2 is characterized in that, when the golf club head is a driver head or an iron club head, a face plate made of polyphenylsulfone is provided in a recess provided on the face surface thereof. It is characterized by being fitted and fixed.

On the other hand, according to the third aspect of the present invention, when the golf club head is a putter head, a face plate made of a polyester-based thermoplastic elastomer is fitted and fixed in a recess provided on the face surface thereof. It is characterized by having.

[0010]

The polyphenylsulfone is a tough, hard, relatively lightweight, non-crystalline engineering plastic that can be easily molded. Therefore, a golf club head having a face surface formed of the polyphenylsulfone, particularly, The face surface of the driver or the iron club head exhibits excellent impact resistance and toughness, and has a large repulsion force, so that the flight distance at the time of hitting is improved and a good shot feeling is obtained. On the other hand, a polyester-based thermoplastic elastomer is an engineering plastic having relatively high hardness and rubber properties, and a golf club head having a face surface formed by the polyester-based thermoplastic elastomer, in particular, a face surface of a putter, A soft feel at impact is obtained with excellent rebound resilience and almost no hitting sound. A face plate made of polyphenylsulfone or a polyester-based thermoplastic elastomer for forming a face is excellent in weather resistance and can be used for a long time.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, a specific embodiment of the present invention will be described. In FIGS. A recess 2 having an appropriate depth (about 5 to 12 mm) is formed toward the rear wall surface of the head main body 1 while leaving the peripheral portion 11 of the head main body 1 on the face surface 1a side. The peripheral wall surface 2a of the recess 2 is a toe portion 1b of the head body 1.
And the sole portion 1c, the heel portion 1d, and the upper surface portion 1e are provided in parallel with each other, and the thickness between the inner and outer peripheral surfaces of the peripheral wall portion 11 surrounding the recess 2 is formed to be about 2 to 3 mm.

Reference numeral 3 denotes a face plate made of a polyester-based thermoplastic elastomer which is fitted in the recess 2 and has a smooth front surface which forms the face surface 1a of the head body 1 with the smooth surface. are doing. The face plate 3 has the same shape as the recess 2 and is fitted into the recess 2 and fixed with an appropriate adhesive such as an epoxy-based adhesive or a urethane-based adhesive to form a smooth face 1a. The peripheral wall 11 is flush with the front end surface.

The polyester thermoplastic elastomer forming the face plate 3 is a polyester elastomer using aromatic polyester for the hard segment and aliphatic polyether for the soft segment (Perprene, trade name, manufactured by Toyobo Co., Ltd.). This polyester elastomer is excellent in hardness and soundproofing properties, and exhibits the highest rebound resilience in the elastomer.In addition, it is excellent in cold resistance, heat resistance, flexibility, moldability, and has conventionally been used for packing and tubes, Engineering plastics used for applications such as tires.

The metal head main body 1 is provided with a hole 5 for mounting a putter shaft 4.
The putter is formed by fitting the lower end of the putter shaft 4 to the putter.

In the putter thus constructed, the face 1a is formed of a polyester-based thermoplastic elastomer, so that the excellent rebound resilience provides a very smooth and soft feel at impact, and stable putting. It has the most desirable physical properties as a putter for a golf club.

FIGS. 3 and 4 show an iron club head, and FIGS. 5 and 6 show a driver's head. In each case, the head main bodies 1A and 1B are made of aluminum alloy, brass, stainless steel, titanium alloy Like the putter head main body 1, the peripheral portion 11 of each of the head main bodies 1A and 1B is formed on the face surface 1a side similarly to the putter head main body 1.
And a recess 2 having an appropriate depth is formed toward the rear wall surface of the head body, and a face plate 3 made of engineering plastic having the same shape as the recess 2 is formed in the recess 2.
A and 3B are fitted respectively and fixed with an adhesive, and the front faces of the face plates 3A and 3B are respectively attached to the head bodies 1A and 1B.
It is made flush with the front of the camera.

The engineering plastics forming the face plates 3A and 3B include polyphenylsulfur, which is an amorphous plastic which is relatively lightweight, tough and hard, and has excellent dimensional stability, heat resistance, moldability, and the like. Polyphenylsulfone (PPSF) is generally used for applications such as aircraft interior materials, medical equipment, and automobile parts.

The face surface of the iron club head and the driver formed of this polyphenylsulfone has the toughness and dimensional stability of the polyphenylsulfone,
Not only can it be used for a long period of time due to heat resistance and the like, but it is light and easy to handle, and furthermore has a large repulsive force, improves non-distance when hitting a ball, and gives a good shot feeling.

In the present invention, the face plate 3 of the putter head is formed of polyphenylsulfone, and the face plates 3A and 3B of the iron club head and the driver head are formed of a polyester thermoplastic elastomer. Is also good.

[0020]

As described above, according to the golf club head of the present invention, a recess is formed on the face side of the metal head body except for the peripheral portion of the head body, and the recess is formed in the recess. Since it has a structure in which a face plate made of a phone or a polyester-based thermoplastic elastomer is fitted and fixed, it almost satisfies the resilience, feel at impact, strength, weather resistance, etc. conventionally required for the face surface of a golf club head. Thus, an ideal golf club head can be formed.

In particular, in the driver head or the iron club head, a face plate made of polyphenylsulfone is fitted and fixed in a recess provided in the face surface as described in claim 2. Due to this, the face surface exhibits excellent impact resistance and toughness, has a large repulsion force, can improve the flight distance at the time of hitting, and can obtain a good shot feeling and is light and handling It is excellent in dimensional stability and moldability, suitable for mass production, and can withstand long-term use.

Also, the putter head has a structure in which a face plate made of a polyester-based thermoplastic elastomer is fitted into and fixed to a recess provided on the face surface of the putter head. It is excellent in elasticity and can give a soft hitting feeling with almost no hitting sound, can form a face surface that can perform stable putting, and is excellent in dimensional stability, moldability and mass production It is suitable and can be used for a long time.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a putter head body and a face plate,

FIG. 2 is a longitudinal sectional side view showing a state in which a face plate is fitted in a recess of a head body.

FIG. 3 is an exploded perspective view of an iron club head main body and a face plate,

FIG. 4 is a longitudinal sectional side view showing a state in which a face plate is fitted in a recess of a head body.

FIG. 5 is an exploded perspective view of an iron club head body and a face plate of the driver.

FIG. 6 is a longitudinal sectional side view showing a state in which a face plate is fitted in a recess of the head main body.

[Explanation of symbols]

 1 Head body 1a Face surface 2 Concavity 3, 3A, 3B Face plate

Claims (3)

[Claims] 1. A recess is formed on the face side of a metal head body while leaving a peripheral portion of the head body, and a face plate made of polyphenylsulfone or a polyester-based thermoplastic elastomer is fitted into the recess. A golf club head which is fixed by using. 2. A golf club head, which is a driver head or an iron club head, wherein a face plate made of polyphenylsulfone is fitted and fixed in a recess provided on a face surface thereof. The golf club head according to claim 1. 3. The golf club head according to claim 1, wherein the golf club head is a putter head, and a face plate made of a polyester-based thermoplastic elastomer is fitted and fixed in a recess provided on a face surface thereof. A golf club head according to claim 1.