JPH0445740Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an iron club head, and more particularly to 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]

Iron club heads are generally integrally molded from metal materials such as soft iron or stainless steel, but this type of club head is a lump of metal, although the shape and weight are tailored to each club. The ball has poor elasticity, especially the ball hitting surface, which is the most important for hitting the ball, so its coefficient of restitution is small and the ball leaves the ball hitting surface of the head quickly, making it difficult to control the ball. It is not possible to obtain the soft feel of hitting the ball, the impact when hitting the ball is propagated to the grip, and the ball cannot travel far.

Therefore, in the past, for example, the sole and hosel were made of metal, and the face part was made of a material containing glass fiber to increase the repulsion force (see Japanese Utility Model Publication No. 17883/1983), and the shaft insertion Approximately in the center of the sole part that is continuous with the hosel part,
A metal body is formed with a plate-shaped core that stands upright in the length direction of the sole part, and a synthetic resin outer body is integrally molded on the body (see Utility Model Application Publication No. 16670/1983). A protruding core is made of a metal such as soft iron or stainless steel, and a plurality of through holes are bored through the core in the front-rear direction, and a fiber-reinforced synthetic resin mainly made of carbon fiber is made of the core. The fiber-reinforced synthetic resin is integrally coated and cured in a substantially inverted V-shape on the front and rear surfaces of the part, and each of the through holes is also filled with the fiber reinforced synthetic resin (see Japanese Utility Model Publication No. 59-190270). As shown in the figure, at least the face surface (ball-hitting surface) that makes up the club head body is made of a fiber-reinforced synthetic resin material mixed with carbon fiber, etc., thereby increasing the repulsive force of the ball-hitting surface and making it softer when hitting the ball. I try to get a good feel when hitting the ball.

[Problem that the invention attempts to solve]

However, in the above-mentioned Utility Model Publication No. 53-17883, the face part does not have sufficient strength and is damaged, and in other known examples, the core part protrudes rigidly and integrally from the sole part. For,
Although the synthetic resin layer that forms the face part absorbs some of the impact of the ball, it is received by the core part located at the rear of the synthetic resin layer.
This is transmitted to the player's hands through the sole, hosel, etc. that are integrated with the core, making it impossible to obtain a sufficiently soft hitting feeling.

This invention was devised to solve these conventional problems, and its purpose is to provide a soft feel at impact, good directionality of the ball, easy ball control, and sufficient bounce. An object of the present invention is to provide an iron club head which has a powerful force and sufficient strength.

[Means to solve problems]

In the iron club head according to the present invention, a weight setting block is provided above the sole part continuous with the hosel part with a space continuous from the hosel part to the sole part, and the weight setting block is surrounded by the hosel part. and the sole part is held together by a plurality of support pieces thinner than the thickness of the connection part of the weight setting block to form a base metal body, and a fiber reinforced synthetic resin body is placed in the space of the base metal body. and covering the outer surface of the weight setting block, and a fiber-reinforced synthetic resin layer is formed on the outer surface of the weight setting block.

[Effect of invention]

In the present invention, the weight setting block, which receives the impact of the ball through the fiber-reinforced synthetic resin layer or the fiber-reinforced synthetic resin body, is integrated with the base metal body that fixes the shaft through a plurality of supporting pieces. Because the weight setting block has sufficient strength, the impact received by the weight setting block is absorbed and does not directly propagate to the player's hands, resulting in an extremely soft feel at impact, and the impact from the face surface. By slowing down the ball's separation and making it easier to control the direction of flight, by connecting the weight setting block with a plurality of thin support pieces, it is possible to generate sufficient repulsive force when hitting the ball.

[Example of idea]

Hereinafter, embodiments of the present invention will be described based on the drawings.

1 to 3 show a first embodiment of an iron club head according to the present invention, the golf club head is designated by the general reference numeral 1, and the golf club head 1 is made of metal such as soft iron or stainless steel. A molded base metal body 2 is provided. As shown in FIG. 3, the base metal body 2 includes a sole portion 3, a hosel portion 4 for attaching a shaft integrally connected to the heel 3a side, and a weight of the entire club head 1 set to match the club count. It consists of a weight setting block 5.
The weight setting block 5 has spaces 8 and 9 placed above the base metal body 2 having the sole part 3 and the hosel part 4, and is supported by a plurality of upright support pieces 6 and horizontal support pieces 7. It is integrally connected to the base metal body 2.

Note that the space 8 is a horizontal space provided in the longitudinal direction above the sole portion 3, and the space 9 is a space provided longitudinally in the front side of the heel portion 3a and is continuous with the space 8. Further, on the upper surface of the sole portion 3, a stepped portion 10 is formed in the longitudinal direction of the sole portion 3 in order to maintain the mechanical bonding strength between the fiber reinforced synthetic resin body 11 and the sole portion 3, which will be described later.

The base metal body 2 thus constructed is set in a head molding die (not shown), and a fiber-reinforced synthetic resin material mixed with reinforcing fibers such as carbon fiber and glass fiber is placed in the molding die. By compression molding or injecting and solidifying, the fiber-reinforced synthetic resin body 11 is integrally formed in the upper surface of the sole portion 3 except for the lower surface (including the stepped portion 10) and in the spaces 8 and 9, and the hosel portion 4 A fiber-reinforced synthetic resin layer 12 is formed on the outer surface of the weight setting block 5 and the outer surface of the weight setting block 5.

In the iron club head 1 configured as described above, the weight setting block 5, which receives the impact of the ball via the fiber-reinforced synthetic resin layer 12 or the fiber-reinforced synthetic resin body 11, fixes the shaft. Since it is integrally connected to the base metal body 2 by a plurality of thin support pieces 6, it has sufficient strength while absorbing the impact received by the weight setting block 5 and directly transmitting it to the player's hands. An extremely soft feel at impact is obtained without propagation, and the ball leaves the face surface 1a slowly, making it easier to control the direction of flight.

Also, since it has a weight setting block 5,
By changing its shape, thickness, etc., it is possible to easily set the weight required for the iron club head.
Since it is integrated with the base metal body 2, it is easy to mold the base metal body 2 including the weight setting block 5, which improves productivity and improves the composite structure with the fiber-reinforced synthetic resin material. The productivity of the iron club head is improved, and since the weight setting block 5 has the function of supporting the fiber-reinforced synthetic resin body 11 to the base metal body 2, the weight setting block 5 has the effect of supporting the base metal body 2 due to impact during shot. Peeling between the fiber reinforced synthetic resin body 11 and the fiber reinforced synthetic resin layer 12 can be prevented.

Furthermore, support pieces 6 and 7 are provided integrally between the weight setting block 5 and the stepped portion 10 and between the weight setting block 5 and the hosel portion 4, respectively.
is made thinner than the width of the weight setting block 5 and the stepped portion 10 at the part where they are joined, so that the contact area with the fiber reinforced synthetic resin body 11 filled in the spaces 8 and 9 increases. Therefore, the bond strength can be increased.

Furthermore, since the weight setting block 5 is located behind the ball-striking area and is supported by the thin support pieces 6 and 7, the ball-striking area has a sufficient area compared to a ball-striking area formed only of fiber-reinforced synthetic resin. Although it has strength, it can extend the flight distance of the ball with its elasticity.

FIG. 4 shows a second embodiment of the present invention, in which the spaces 8 and 9 forming the support pieces 6 and 7 are formed into round holes.

In this case, the joints between each support piece 6, the weight setting block 5, and the stepped part 10, and the joints between the support piece 7, the weight setting block 5, the hosel part 4, and the sole part 3a, The rounded shape improves the support strength of the weight setting block 5, and functions as a support when the weight setting block 5 is deformed by impact during shot.

In each of the above embodiments, the case where the horizontally long space 8 is formed substantially parallel to the sole portion 3 has been described, but even if the toe side 3b is higher than the sole surface and the heel side 3a is lower good. In this case, the weight is biased toward the tip of the sole portion 3, which is the longest distance from the grip of the shaft connected to the hosel portion 4.
When swinging a club with this iron club head, the moment of inertia is large,
This makes it suitable for long irons.

[Effect of idea]

As explained above, according to the present invention, the weight setting block has a flexible structure and is held in a stable state with respect to the base metal body by a plurality of thin supporting pieces at the lower part and one side thereof, so that it is difficult to hit a ball. The impact of the ball is not directly propagated to the grip, a soft feel at impact is obtained, and the directionality of the ball is stabilized, making it easier to control the ball.

In addition, the force accumulated in the weight setting block when hitting a ball is reflected by the flexible structure of the plurality of thin support pieces, thereby generating a sufficient repulsive force and extending the flight distance of the ball.

Furthermore, although the weight setting block is spaced apart from the hosel and sole, it is connected to the surrounding area and the sole with multiple support pieces, so the weight setting block is protected from impact when hitting a ball. This can prevent damage such as peeling and cracking from the fiber-reinforced synthetic resin layer.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing a first embodiment of an iron club head according to the present invention. FIG. 2 is a sectional view taken along the - line in FIG. 1. FIG. 3 is a perspective view of the metal body in FIG. 1. FIG. 4 is a partially cutaway front view showing a second embodiment of the iron club head according to the present invention. Explanation of symbols, 1...Golf club head, 2...
...Metal body for base, 3... Sole part, 3a... Heel part, 3b... Toe part, 4... Hosel part, 5
...Weight setting block, 6, 7... Support piece, 8, 9... Space, 10... Step portion, 11... Fiber-reinforced synthetic resin body, 12... Fiber-reinforced synthetic resin layer.

Claims (1)

[Scope of utility model registration request] A weight setting block is disposed above the sole part continuous with the hosel part, with continuous vertical and horizontal spaces extending from the hosel part to the sole part, and the weight setting block is surrounded by the hosel part and the sole part. A base metal body is formed by holding the base metal body together with a plurality of support pieces thinner than the thickness of the connecting portion of the weight setting block, and the space of the base metal body is filled with a fiber-reinforced synthetic resin body. An iron club head characterized in that the outer surface of the weight setting block is covered with a fiber-reinforced synthetic resin layer formed on the outer surface of the weight setting block.