JPH07121284B2 - Golf iron club head - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron club head for golf, and more particularly to a head frame body made of a metal material, the side of which is hit, and a hitting surface plate made of a high elastic modulus material is attached to the open surface. By doing so, it is intended to improve the resilience characteristic against the ball at the time of hitting the ball.

[0002]

2. Description of the Related Art Recently, in iron clubs, a fiber reinforced plastic (hereinafter referred to as F
(Abbreviated as RP), particularly, one having a composite structure in which CFRP (carbon fiber reinforced plastics) made of a high elastic modulus material having carbon fibers as reinforcing fibers is additionally provided is proposed and put to practical use.

In such an iron club head, the ball striking surface is composed of a ball striking plate made of CFRP.
When the ball is hit, it gives the ball its own repulsion characteristics,
The aim is to increase the flight distance of the ball, reduce the overall weight of the head, and stabilize the directionality of the ball.

[0004]

However, in the iron club head having the above-described conventional structure, the CFRP ball striking plate is solidly attached to the portion corresponding to the ball striking face of the head frame body directly or through a cushioning member such as rubber. As a result, the elastic deformation of the CFRP due to the impact at the time of hitting the ball is fully backed up by the head frame body located in the rear part with respect to the hitting direction, so that the characteristics of the head frame body have a great influence. Therefore, there is a problem that the characteristics of CFRP cannot be fully exhibited.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a golf iron club head capable of sufficiently exerting the characteristics of a ball striking face plate when hitting a ball.

[0006]

In order to solve the above-mentioned problems, the present invention provides a head frame body made of a metal material with a through-passage portion that is pulled out from the portion corresponding to the ball striking face to the back surface side, and the through window portion is provided . Made of FRP in the part of the window that is equivalent to the ball striking surface
A ball striking face plate is attached, and a metal is
The metal thin film is formed .

[0007]

[Action] Namely, the present invention is, by employing the configuration described above, Ru provided with a through window portion passing to the back surface side from the ball striking face corresponding portion of the head frame body made of metal material
At the same time, a metal on the surface is
Since a ball striking face plate made of FRP on which a thin film is formed is attached, the striking face plate attached to the open surface of the portion corresponding to the ball striking face has various high elastic modulus materials according to the user's preference.
It becomes possible to select it as the RP material.

Moreover, a metal thin film is formed on the surface of the ball striking face plate.
The gold that forms the headframe body because it is made
The feeling of discomfort with metal materials is prevented and the durability of the striking face plate is improved.
Wearability is enhanced.

Further , since the head frame itself can be provided with a weight adjusting effect, a supporting function for the ball striking face plate and a connecting function between the ball striking face plate and the shaft hosel, the characteristics of the ball striking face plate can be completely achieved when the ball is hit. Can be demonstrated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiments. FIG. 1 shows a golf iron club head according to the present invention. In FIG. 1, 1 is a metal such as stainless steel. It is a head frame body made of material.

[0011] back surface 3 The head frame body 1, a ball striking face equivalent part 2, the outer peripheral edge portion 2a in a frame shape
The through-hole portion 4 is formed so as to escape to the side, and the hitting-face side opening surface 4a of the through-window portion 4 is attached so that the hitting-face plate 5 made of a FRP material having a high elastic modulus such as CFRP is closed. It is set up.

[0012] The ball striking surface plate 5, to form a stepped portion 21 on the outer peripheral edge portion 2a of the ball striking surface equivalent part 2 of the head frame body 1, the outer peripheral edge portion 2a flush on the stepped portion 21 Thus, the metal thin film 6 is formed by plating, vapor deposition, metal spraying or the like while being fitted and attached and fixed by an adhesive or the like.

Reference numeral 7 in the figure denotes the head frame body 1
Is a shaft connected to the hosel part 1a.

By the way, typical of a material constituting the ball striking face plate 5 described above, as described below, C
It is a high elastic modulus material of FRP including FRP .

[0015] a plurality of reinforcing fibers such high modulus material, depending on the thickness and characteristics corresponding to the count of the club of interest
It is made by stacking multiple sheets and stacking them in multiple layers.
Epoxy resin or unsaturated polyester
Impregnated with uncured synthetic resin liquid for matrix such as resin
If necessary, semi-cured prepreg or wet composition
This raw material for FRP molding, which is a shaping material, is used to
Molding raw material is heated and pressed with a mold to cure it to the desired thickness.
Molded or cured multiple FRP plates
It is obtained by laminating and bonding.

[0016] Also, as the type of reinforcing fiber, two-dimensional woven
Of carbon fiber made of knitting or three-dimensional woven knitting
In addition, carbon fibers are mainly used as aromatic polyamines with high elastic modulus.
Mid fiber, glass fiber, boron fiber, silicon carbide
Dode fiber or alumina fiber, etc. are preferably used in combination.
It

[0017] Furthermore, these reinforcing fibers are individually
Layered woven or knitted materials or mixing various fibers
Those which are preferably used by woven and knitted in combination.
Is.

Further, the molding material of the head frame body 1
In addition to stainless steel, cast iron, soft iron, copper alloy
High specific gravity and high strength materials such as gold or brass are preferably used.
Be done.

[0019] Thus, an iron club head according to the invention described above, the head frame body 1, a provided through window portion 4 passing from the ball striking face equivalent part 2 to the back surface 3 side, the ball striking face of the through window portion 4 It is possible to selectively attach the ball striking face plate 5 to the side open surface 4a with a material having high elasticity according to the user's preference, and the rear side of the ball striking face plate 5 in the ball striking direction is opened by the through window portion 4. Therefore, the impact at the time of hitting the ball is directly borne by only the ball striking face plate 5, which makes it possible to sufficiently exert the characteristics of the ball striking face plate 5 made of a high elastic modulus material on the ball. .

Further , a step portion 21 is formed on the frame-shaped outer peripheral edge portion 2a of the ball striking face corresponding portion 2 of the head frame main body 1 so that the step portion 21 is flush with the outer peripheral edge portion 2a. In the structure in which the ball striking face plate 5 is fitted so as to be fitted, the external force at the time of hitting the ball is applied to the head frame body 1 and the end portion of the ball striking face plate 5 is protected, so that the durability is improved.

In the embodiment of the present invention, the through window portion 4 of the head frame body 1 is filled with a filler made of non-strength synthetic resin such as foamable or non-foaming synthetic resin, or By covering the open surface of the back surface 3 side with a protective cover made of a synthetic resin thin plate or the like, the outer shape of the head is adjusted, and thereby, dirt and the like in the through window portion 4 of the head frame body 1 May be prevented from adhering to enhance the aesthetic appearance.

Further , the metal thin film 6 formed on the surface of the ball striking face plate 5 made of FRP such as CFRP attached to the part 2 of the head frame body 1 corresponding to the ball striking face is made of a metal material forming the head frame body 1. And the abrasion resistance of the ball striking face plate 5, and in addition to formation by plating, vapor deposition or thermal spraying, a film-like body made of a mixture of metal and ceramic fine powder, CFRP, etc. It is also possible to use a metal face plate having a thickness capable of cooperating so as not to affect the characteristics of the ball striking face plate itself.

At this time, in forming the score line (lateral groove) on the head striking face, if the score line is recessed only in the metal layer on the surface of the striking face plate 5, the characteristics of the striking face plate 5 are not impaired.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the spirit of the invention.

[0025]

As apparent from the foregoing description, according to the present invention, when Ru provided with a through window portion passing the back side from the ball striking surface equivalent part of the head frame body made of metal material
In both cases, a thin metal surface
Since a ball striking face plate made of FRP having a film is additionally provided, the FR striking face plate attached to the open surface of the portion corresponding to the ball striking face has various high elastic modulus materials according to the user's preference.
P material can be selected.

[0026] Moreover, a metal thin film is formed on the surface of the ball striking face plate.
The gold that forms the headframe body because it is made
It is possible to prevent discomfort with metal materials, and
The wear resistance of the spherical plate can be improved.

Further, by attaching a ball striking face plate made of a high elastic modulus material to the ball striking face side open surface of the through window portion of the head frame main body, the back side of the ball striking face plate is opened. The high elastic modulus characteristics of the ball striking surface plate can be directly exerted in the resilience characteristics against the ball at the time of hitting the ball.

Furthermore, the weight adjustment effect head frame itself, of the ball striking face plate supporting function and the ball striking face plate and shaft
In order to have a connection function with the hosel,
When hitting a ball, the characteristics of the hitting surface plate can be fully exhibited.

Further , since the adjustment width of the entire head and the weight distribution can be increased by the shape of the through window of the head frame main body, the degree of freedom in designing the head can be increased. Inertial efficiency can be improved and the sweet spot and sweet aria can be enlarged.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a golf iron club head according to the present invention in a disassembled state of a head frame main body and a ball striking face plate.

[Explanation of symbols]

1 ... Head frame main body, 2 ... Equivalent to ball striking face,
2a ... Outer peripheral edge portion, 21 ... Step portion, 3 ... Back surface, 4 ... Through window portion, 4a ... Open surface, 5 ...
・ Striking surface plate , 6 ... Metal thin film .

Claims (3)

[Claims] 1. A head frame body made of a metal material is provided with a through-window portion that extends from a portion corresponding to the ball striking face to the back surface side, and a portion of the through-window portion corresponding to the ball striking face is made of FRP.
And a metal thin film on the surface of this ball striking plate.
An iron club head for golf characterized by being formed . 2. The golf iron according to claim 1, wherein the open surface of the through window provided in the portion corresponding to the ball striking face of the head frame main body is formed in a frame shape except for the outer peripheral edge portion. Club head. 3. A stepped portion is formed stepwise on an open surface of a through window provided in a portion corresponding to a ball striking face of a head frame main body , and this stepped portion is formed.
3. The golf iron club head according to claim 1 or 2 , wherein a ball striking face plate is fitted in the difference portion and is attached flush with the difference portion .