JPH05200132A - Composite laminate for face of golf club and golf club using the composite laminate - Google Patents

Abstract

(57) [Summary] [Purpose] For a face that is adjusted to have a coefficient of restitution and specific gravity suitable for use on the face surface of a golf club, and also has a high-grade appearance like gold or other heavy metal color in appearance. It is intended to provide a composite laminated plate and a golf club using the material and having a structure and characteristics which have not been hitherto obtained. [Structure] A porous sheet-shaped base material impregnated or coated with a mixed solution of metal powder and a synthetic resin of condensation type or condensation type is laminated and solidified to form a composite laminated plate for a face of a golf club. In addition, a golf club is formed by adhering the composite laminated plate to the face surface of the head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a face composite laminated plate joined to a face surface of a golf club head and a golf club using the face composite laminated plate.

[0002]

2. Description of the Related Art Conventionally, an insert is fixed to the face of a wood club head for the purpose of improving its durability and coefficient of restitution. For example, as shown in FIG. 7, a non-parallel engaging groove c that is parallel to the face a of the face b of the head a and has an opposing wall narrowed upward is cut in the central portion corresponding to the sweet spot, and the engagement is performed. A general structure is one in which an insert d having the same shape is engaged with and bonded to the groove c, and is fastened with a plurality of screws e, ...

Here, the material itself obtained by laminating and solidifying a sheet-like base material impregnated with a synthetic resin on a cloth or the like has been conventionally known, and a golf club using a part of the material as an insert material is provided. The specific gravity is 1.38 ~
Since it was as small as 1.40, the center of gravity of the head was rearward, and a sufficient coefficient of restitution was not obtained.

Further, in the conventional structure for fixing the insert to the club face, the screw head is inevitably exposed on the surface, impairing the appearance. Furthermore, the part where the insert exists is limited to only the central part of the club face, and the wood that is the base material of the head is located on both sides of it, so the sweet spot is narrow, and the sweet spot is removed at the time of impact, When the golf ball is caught on the outer surface of the golf ball, the repulsive force is halved and the directionality of the hit ball is not fixed.

[0005]

In view of the above-mentioned situation, the present invention aims to solve the problems by adjusting the coefficient of restitution and the specific gravity suitable for use in the face surface of a golf club, and also in terms of appearance. Another object of the present invention is to provide a face composite laminate having such a high-grade feeling or other heavy metal color, and to provide a golf club using the face composite laminate having an unprecedented structure and characteristics.

[0006]

In order to solve the above-mentioned problems, the present invention laminates a porous sheet-like base material impregnated or coated with a mixed solution of metal powder and a polymerization-type or condensation-type synthetic resin. Then, a composite laminated plate for a face of a golf club formed by solidifying was formed.

Further, a porous sheet-like base material impregnated or coated with a mixed liquid of metal powder and a synthetic or condensation type synthetic resin, and a sheet-like base material containing a metal powder different from the metal powder. A composite laminate for a face of a golf club was formed by alternately stacking and solidifying.

As the metal powder, one or more of titanium powder, copper powder, brass powder, stainless powder, iron powder, zinc powder and tin powder are used.

The average particle size of the metal powder is 5-100.
When a synthetic resin such as an epoxy resin, a polyester resin, or a phenol resin is used as the polymerization-type or condensation-type synthetic resin and the specific gravity is adjusted to 1.40 to 1.70, the golf club face has good A composite laminate is obtained.

Then, a composite sheet for face formed by laminating and solidifying porous sheet-like base materials impregnated or coated with a mixed solution of metal powder and a synthetic resin of polymerization type or condensation type is formed into a club face. A golf club was formed by adhering to a surface and processing it into a predetermined shape.

When joining the club face surface and the face composite laminate, a plurality of dimples are formed at positions corresponding to each other on the joining surfaces, and holes formed by the dimples in the joined state are formed. The inside is filled with an adhesive and bonded.

[0012]

In the composite laminate for a face of the golf club of the present invention having the above-mentioned contents, the metal powder is uniformly dispersed and added therein, so that the specific gravity of the material increases and
The coefficient of restitution is increased and the strength is further improved.

Further, when copper powder is used as the metal powder, the material itself has a high-class feeling close to that of gold, and when other metal powder is used, it has a unique metallic color. Furthermore, when two or more kinds of different metal powders are used, it is possible to obtain an intermediate color and to easily adjust the specific gravity.

Further, the average particle size of the metal powder is 5 to 100 μm.
When a synthetic resin such as an epoxy resin, a polyester resin, or a phenol resin is used as the polymerization-type or condensation-type synthetic resin, the metal powder can be uniformly dispersed in the resin liquid at the viscosity of the resin liquid. ..

Since the metal powder is added, the specific gravity is 1.
It becomes possible to adjust to 40 to 1.70.

When the above-described face composite laminate plate is adhered to the club face surface and processed into a predetermined shape to form a golf club, this material is arranged on the entire surface of the face. Around the same coefficient of restitution is obtained everywhere, and because the composite laminate for face has a large specific gravity, it is possible to set the center of gravity of the head to the front and improve the balance of the head, especially the balance at the moment of impact. .

When joining the club face surface and the face composite laminate, a plurality of dimples are formed at positions corresponding to each other on the two joining surfaces, and the inside of the hole formed by both dimples in the joined state is formed. By filling and bonding with adhesive, the resin cured in the holes becomes a lump and acts as an embedded pin, completely controlling the deviation in the direction parallel to the joint surface and Together with the adhesive layer spread in layers, both bonding surfaces are firmly bonded.

[0018]

The present invention will be further described in detail with reference to the embodiments shown in the accompanying drawings.

First, in order to manufacture a composite laminate for a face, 5 to 30 metal powders having an average particle size of 5 to 100 μm are added to a condensed synthetic resin solution prepared to have a viscosity of 300 ± 100 cps / 20 ° C. Prepare a mixed solution in which the mixture is mixed by weight% and stirred.
Then, the mixed liquid is circulated to uniformly disperse the metal powder, and the porous sheet-shaped substrate 1 is dipped and impregnated in the mixed liquid, or the mixed liquid is applied to the sheet-shaped substrate 1. After that, it is passed through a drying oven for continuous drying. Then, as shown in the figure sheet-like substrate 1, the sheet-like substrate 1 in a semi-dried state is used alone or a plurality of different sheet-like substrates 1 in which different kinds of metal powders are mixed are combined, and a large number of these are prepared. After laminating the sheets, the temperature is 160 to 180 ° C, the pressure is 100 to 15
By heat-pressing under the condition of 0 kgf / cm ^2, the face composite laminate 2 is obtained as shown in FIG.

As the porous sheet-shaped substrate 1, a pure cotton cloth material is usually used. The characteristic of this cloth material is that when T is in the vertical direction and Y is in the horizontal direction, the number of driven materials is T =
60 pieces / inch, Y = 60 pieces / inch, specific gravity 127g
/ M ² , tensile strength T = 56.0 kg, Y = 54.7 k
g, tear strength T = 1.63 kg, Y = 1.63 kg,
The shrinkage is T = 2.7% and Y = 7.9%. Examples of materials that can be used as the sheet-shaped substrate 1 include synthetic cloth woven and non-woven fabrics such as glass cloth, glass paper, and vinylon, and woven or non-woven fabrics using linter paper and carbon fiber.

The metal powder is preferably titanium powder or copper powder, but metal powder such as stainless powder, iron powder, zinc powder, tin powder, brass powder, titanium carbide (TiC) powder,
Examples of the alloy powder include tungsten carbide (WC) powder and silicon carbide (SiC). Further, a surface-treated product of a car powder, for example, an inorganic substance mixed with gold, silver, copper or the like can be used instead of the metal powder or in combination with the metal powder.

Further, as the above-mentioned polymerization-type or condensation-type synthetic resin, an epoxy resin is preferable, and besides, an unsaturated polyester resin, a phenol resin, a melamine resin or the like can be used.

To describe a more preferred embodiment, titanium powder and copper powder are used as the metal powder, and these are mixed and dispersed in an epoxy resin liquid, and this mixed liquid is impregnated or coated on the sheet-shaped substrate 1 as described above. A large number of types of sheet-shaped base materials 1 are laminated and solidified. In this case, if the proportion of the copper powder is high, the surface of the manufactured composite laminated plate 2 has a high-grade feeling of gold.

Further, the sheet-like base material 1 is dipped in and impregnated with two kinds of mixed solutions in which titanium powder and copper powder are mixed and dispersed in an epoxy resin solution, respectively, to prepare two kinds of sheet-like base materials 1. , They are laminated alternately and solidified to form a composite laminate 2
When the sheet-shaped base material 1 containing copper powder is positioned on the front surface side in the case of manufacturing, a high-class feeling closer to gold is exhibited.

The specific gravity of the composite laminated plate 2 thus prepared is sufficiently higher than that of the conventional 1.38 to 1.40.
It becomes possible to set it to 45-1.68. This specific gravity depends on the amount of the metal powder mixed, and is practically 1.40 to 1.
Set in the range of 70. The coefficient of restitution of the composite laminated plate 2 varies depending on the type and amount of metal powder mixed and the type of synthetic resin, but 20% by weight of titanium powder and 15% by weight of copper powder are mixed with epoxy resin to obtain a specific gravity of 1. The coefficient of restitution of the composite laminated plate 2 adjusted to 68 is 75 × 10 ⁻⁴ .

Next, the head 4 of the golf club 3 is manufactured in the following manner using the face composite laminate 2 thus prepared.

First, as shown in FIG. 3, the head 4 is made of wood and made slightly larger than a desired shape to form a flat face surface 5, and one pin hole 6 is bored in the face surface 5. At the same time, a large number of dimples 7, ... Are densely formed in the sweet spot area at the periphery thereof, and a step portion 9 is formed at the boundary between the face surface 5 and the neck 8.

The face plate 10 obtained by processing the composite laminated plate 2 slightly larger than the desired shape has through holes 11 formed at positions corresponding to the pin holes 6 on the face surface 5, as shown in FIG. At the same time, the dimples 1 are provided at the positions corresponding to the dimples 7, ...
2, ... are drilled. Further, when the face plate 10 is joined to the face surface 5 of the head 4, a plurality of groove grooves 13, ... Inwardly extending from the edge corresponding to the step portion 9 are formed. The alternate long and short dash line shown in FIG.
It corresponds to the contour of.

In order to join the head 4 and the face plate 10, epoxy adhesive is applied to the joining faces of the face surface 5 and the face plate 10, respectively, as shown in FIG. The edge is engaged with the step portion 9 to join both joint surfaces, and the pin 14 is driven into the pin hole 6 through the through hole 11 from the front surface side of the face plate 10. In this state, the adhesive is dimples 7 and 1
, ..., the groove 13, and the pin hole 6 and the through hole 11 are filled, and after the adhesive is hardened, both dimples 7 and 12 are formed.
The adhesive is present in a lump form in the pores formed by and acts as a buried pin. Further, the adhesive filled in the groove 13, ... Strengthens the adhesion with the step 9.

After the face plate 10 is bonded to the head 4 in this manner, the head 4 and the face plate 10 are both cut into desired shapes, and the final product shape is obtained as shown in FIG. .. Since the face plate 10 is formed by stacking the sheet-shaped base materials 1, the wood grain-shaped contour lines 15, ... Appear around the substantially sweet spot as a result of this cutting work. This makes it possible to represent the position of the sweet spot. Further, a plurality of laterally parallel grooves 16, ... Are formed on the surface of the processed face plate 10 as in the conventional case.

The shaft 17 is connected to the neck 8 to obtain the golf club 3. In the golf club 3 manufactured in this manner, the face plate 10 has a larger specific gravity than the wood which is the base material of the head 4. The center of gravity becomes closer to the face, and the repulsion at the moment of impact improves.

[0032]

EFFECT OF THE INVENTION According to the composite face laminate for a golf club of the present invention as described above, a porous sheet-like base material impregnated or coated with a mixed solution of metal powder and a condensation type synthetic resin is laminated. Since it is solidified, or a sheet-like base material that is a porous sheet-like base material impregnated or applied with a mixed solution of metal powder and a condensation-type synthetic resin, and a metal powder different from the metal powder Since the base material and the base material are alternately laminated and solidified, the coefficient of restitution of the face can be increased, the specific gravity can be made larger than that of the conventional insert material, and the strength can be further improved.

Further, when copper powder is used as the metal powder, it is possible to give the material itself a high-class feeling close to gold, and even when other metal powder is used, the metal color peculiar to the metal is obtained. Can be granted. Furthermore, when two or more kinds of different metal powders are used, it is possible to obtain an intermediate color and to easily adjust the specific gravity.

Further, the average particle size of the metal powder is 5 to 100 μm.
When a synthetic resin such as an epoxy resin or a polyester resin is used as the condensation-type synthetic resin, the metal powder can be uniformly dispersed in the resin liquid due to the viscosity of the resin liquid.

Further, since metal powder is added, the specific gravity is 1.40 which is most suitable as a composite laminate for a face of a golf club.
It becomes possible to adjust to 1.70.

When the above-described composite face laminated plate is adhered to the club face surface and processed into a predetermined shape to form a golf club, this material is arranged on the entire surface of the face. Around the same coefficient of restitution is obtained everywhere, and the specific gravity of the face composite laminate plate is large, so it is possible to set the center of gravity of the head to the front, improving the balance of the head, especially the balance at the moment of impact. be able to.

When joining the club face surface and the face composite laminate, a plurality of dimples are formed at positions corresponding to each other on the two joining surfaces, and the inside of the hole formed by the dimples in the joined state is formed. By filling and bonding with an adhesive, the resin cured in the holes becomes a lump and acts as an embedded pin, completely controlling the deviation in the direction parallel to the joint surface and Since it is possible to firmly bond both joint surfaces together with the adhesive layer spread in layers, the engagement groove is cut and formed on the face surface and the insert is engaged with the engagement groove as in the conventional case. While gluing,
Since it is not necessary to fix it with screws, the appearance can be improved.

[Brief description of drawings]

FIG. 1 is an abbreviated perspective view showing a state in which sheet base materials are stacked.

FIG. 2 is an abbreviated perspective view of a composite laminate for face.

FIG. 3 is a front view of the head portion of the golf club.

FIG. 4 is a rear view of a face plate made of a composite laminated plate for face.

FIG. 5 is an exploded side view showing a state in which a head and a face plate are joined together.

FIG. 6 is a front view of the head portion of the golf club of the present invention.

FIG. 7 is a front view of a head portion of a conventional golf club.

[Explanation of symbols]

 1 sheet-shaped base material 2 composite laminated board 3 golf club 4 head 5 face surface 6 pin hole 7 dimple 8 neck 9 step 10 face plate 11 through hole 12 dimple 13 groove 14 pin 15 contour line 16 groove 17 shaft

Claims (8)

[Claims] 1. A face of a golf club, characterized in that a porous sheet-like base material impregnated or coated with a mixed solution of metal powder and a synthetic or condensed synthetic resin is laminated and solidified. Composite laminated board. 2. A sheet-like base material in which a porous sheet-like base material impregnated or applied with a mixed solution of metal powder and a polymerization-type or condensation-type synthetic resin and a metal powder different from the metal powder are mixed. A composite laminated plate for a face of a golf club, which is obtained by alternately stacking and solidifying. 3. One or two of titanium powder, copper powder, brass powder, stainless powder, iron powder, zinc powder and tin powder as the metal powder.
The composite laminated plate for a face of a golf club according to claim 1 or 2, comprising at least one kind. 4. The average particle diameter of the metal powder is 5 to 100 μm.
The composite laminated plate for a face of a golf club according to claim 1 or 2. 5. The composite laminate for a face of a golf club according to claim 1, wherein a synthetic resin such as an epoxy resin, a polyester resin, or a phenol resin is used as the polymerization-type or condensation-type synthetic resin. 6. The composite laminate for a face of a golf club according to claim 1, wherein the specific gravity is adjusted to 1.40 to 1.70. 7. A club face comprising a face composite laminate obtained by stacking and solidifying porous sheet-like base materials impregnated or coated with a mixed solution of metal powder and a polymerization-type or condensation-type synthetic resin. A golf club characterized by being bonded to a surface and processed into a predetermined shape. 8. A plurality of dimples are formed at positions corresponding to each other on both joint surfaces of the club face surface and the face composite laminate, and an adhesive is filled in the holes formed by the both dimples in the joined state. The golf club according to claim 7, wherein the golf clubs are bonded together.