JPH0445739Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement in an iron club head in which at least the ball-hitting area of the head body is formed of a fiber-reinforced synthetic resin material.

[Conventional technology]

Conventionally, iron club heads are made of a composite structure of metal and fiber-reinforced synthetic resin with a high coefficient of restitution.
For example, Utility Model Application No. 59-16670 or Utility Model Application No. 59-
It is known from Publication No. 190270, etc.

Such an iron club head has a sole portion, a hosel portion, and a core portion that constitute the head body made of metal such as stainless steel, aluminum alloy, and soft iron.
This is set in a head molding die and the core and hosel parts are covered with a fiber-reinforced synthetic resin material to form a club head with a composite structure.

Also, for example, as in Japanese Utility Model Application Publication No. 60-94263,
It is also known that a plurality of protrusions projecting upward from the upper surface of the sole part are provided integrally with the sole part, and these protrusions are covered with a fiber-reinforced synthetic resin material.

[Problem that the invention attempts to solve]

In the case of the conventional iron club head as described above, in the former case, the core part is integrally molded with the sole part from the same material, which makes it difficult to obtain a club head with a low center of gravity, and the head tends to shake when hitting the ball. There's a problem. Furthermore, in Japanese Utility Model Application Publication No. 59-16670, there is also an example in which a plate-shaped core is provided upright on a metal sole part and has several through holes.
Since the metal plate-shaped core extends from the sole to the top and is interposed as a heavy object between the face and the back face, it is difficult to position the center of gravity sufficiently downward.

On the other hand, in the latter case, the ball-hitting area is formed by covering multiple protrusions with a fiber-reinforced synthetic resin body, so although the areas where the protrusions are located have strength, other areas do not have a core material, so the ball is It is difficult to reliably hit the target. Further, a region formed solely of a fiber-reinforced synthetic resin layer is undesirable because it may be damaged, for example, when it collides with the ground when hitting a ball, or when it collides with another club when storing a golf bag.

[Purpose of invention]

The present invention was devised to solve such conventional problems, and its purpose is to improve the position of the center of gravity, sweet spot, toe, etc. according to the demands of golfers.
To provide an iron club head in which the heel balance can be arbitrarily changed and the connection strength between a weight setting block and a metal part is high.

[Means for solving ideas]

In order to achieve such an object, the iron club head according to the present invention includes a hosel part and a sole part connected to the hosel part, and a frame forming body that projects upward from the sole part and forms a contour corresponding to the ball hitting area. A base metal body integrally provided with a frame consisting of a support piece formed inside the base metal body, and a weight setting device that is assembled via a support to the ball hitting area above the sole of the base metal body. This weight setting block has a concave groove provided on the back surface that fits into the frame body, and is provided on the ball hitting surface side of the frame body, and both are integrally molded from a fiber-reinforced synthetic resin body. , and a fiber-reinforced synthetic resin layer is formed on at least the outer surface of the ball-hitting area.

[Effect]

In the present invention, the club head body is divided into a base metal body and a weight setting block, and the weight balance can be arbitrarily adjusted by distributing the weight between the two.

[Example of idea]

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the golf club head is designated by the general reference numeral 1, and the golf club head 1 is a metal base integrally formed from a metal body such as stainless steel, soft iron, aluminum alloy, or brass. It has body 2. This metal body 2 includes a sole portion 3
and a hosel portion 4 for inserting a shaft integrally connected to the heel 3a side. A frame 5 having a substantially lattice shape is integrally formed above the sole portion 3 of the metal body 2.

The frame body 5 is located on the toe side 3b of the sole portion 3 of the metal body 2.
A frame forming body 6 is arranged in a substantially L-shape so as to extend from the hosel portion 4 to form the outline of the club head, and on the inside of this frame forming body 6, that is, at the location where the ball hitting area and back portion are formed. A plurality of vertical support pieces 7 (three pieces in this example) at desired intervals and a plurality of pieces (two pieces in this example) perpendicularly thereto at desired intervals.
The horizontal support pieces 8 of the book) are arranged in a row in a substantially grid pattern, and the horizontal support pieces 8 near the hosel part 4 are attached to the frame forming body 6.
It consists of being installed in series.

The metal body 2 and frame body 5 configured in this way have the following features:
A weight setting block 9 is assembled to the frame 5.

The weight setting block 9 is used to set the weight balance of the club head according to the club count or golfer's skill, and may be made of the same material as the base metal body 2 or a different material. There are cases. In this example, the grooves 10 are formed in a substantially lattice shape in accordance with the frame forming body 6, the vertical support pieces 7, and the horizontal support pieces 8 of the frame body 5.
Therefore, the weight setting block 9 is assembled by fitting the groove 10 of the base metal body 2 above the frame 5 to the frame forming body 6, the vertical supports 7, and the horizontal supports 8. It will be done. At this time, the weight setting block 9 is assembled to the frame 5 so as to form a desired space 11 above the sole portion 3 of the base metal body 2. This is this space 1
1, it is also possible to change the center of gravity position.

The base metal body 2, frame body 5, and weight setting block 9 thus constructed are set in a head molding die (not shown), and reinforced with carbon fiber, glass fiber, or other reinforcing fibers. By putting the fiber-reinforced synthetic resin material into the mold and solidifying it, the fiber-reinforced synthetic resin material is applied to the upper surface of the sole portion 3 excluding the lower surface and the frame body 5, which will become the ball-hitting area, as shown in FIGS. 1 and 2. The resin body 12 is integrally molded, and a fiber-reinforced synthetic resin layer 13 is formed on the outer surface of the hosel portion 4, the outer surface of the frame body 5, and the outer surface of the weight setting block 9.

In the above molding process, the frame body 5 and the weight setting block 9 are filled with the fiber-reinforced synthetic resin body 12 by the base metal body 2 of the fiber-reinforced synthetic resin body 12.
Improves adhesion to.

In the thus constructed iron club head according to this embodiment, the weight is distributed between the base metal body 2 and the weight setting block 9, so that the desired center of gravity position can be set freely. The sweet spot range can be adjusted. Moreover, since the frame body 5 is provided integrally with the base metal body 2,
The base metal body 2 can sufficiently support the impact force applied to the frame body 5 when the ball is hit. Further, the weight setting block 9 does not move even when a ball is hit because the groove provided on the back side of the weight setting block 9 is fitted into the frame and provided on the ball hitting surface side of the frame.

In this invention, even if the weight setting block is made of the same material as the base metal, there is a space between them, so the center of gravity shifts to the heavier base metal. However, if the weight setting block is made of another metal body having a specific gravity smaller than that of the base metal body, a club with a lower center of gravity can be obtained. That is, in that case, the degree of freedom in club design increases, and it becomes possible to design a club that meets the golfer's skill and requirements.

[Effect of idea]

As described above, according to the present invention, the club is divided into a base metal body and a weight setting block, and the outside of these is reinforced with a fiber-reinforced synthetic resin layer, so the exterior design is unified using the same mold. You can freely change the center of gravity, sweet spot, and toe-heel balance of the club according to the golfer's skill and requirements. In addition, the weight setting block is provided on the ball hitting surface side of the frame by fitting the concave groove provided on its back into the frame, so that it is sufficiently supported by the frame and does not move when the ball is hit. Therefore, it is possible to maintain sufficient strength against impact when hitting a ball, which is required for an iron club head.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the iron club head according to the present invention, Fig. 2 is a sectional view taken along the - line, and Fig. 3 is a perspective view showing the metal body for the base and the weight setting block. be. DESCRIPTION OF SYMBOLS 1... Golf club head, 2... Metal body for base, 3... Sole part, 4... Hosel part, 5...
...Frame body, 6...Frame forming body, 7...Vertical support piece, 8...
... Lateral support piece, 9 ... Weight setting block, 1
0... Concave groove, 11... Space, 12... Fiber-reinforced synthetic resin body, 13... Fiber-reinforced synthetic resin layer.

Claims (1)

[Scope of utility model registration request] A hosel part and a sole part connected to the hosel part are provided, and a frame body consisting of a frame forming body which protrudes upward from the sole part and forms a contour corresponding to the ball hitting area and a support piece formed inside the frame forming body is integrally provided. It has a base metal body and a weight setting block that is attached to the ball hitting area above the sole of the base metal body via a support, and this weight setting block is attached to a recess provided on the back side. A groove is fitted into the frame and provided on the ball-hitting surface side of the frame, and both are integrally molded with a fiber-reinforced synthetic resin body, and a fiber-reinforced synthetic resin layer is formed on at least the outer surface of the ball-hit area. An iron club head characterized by: