JP2002095778A - Iron club head for playing golf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an iron golf club head with which a beginner can easily get a ball on the sweet spot, which can be conveniently handled with a higher rank person and can hardly hurt an elbow because hitting impact can be restrained low. SOLUTION: The iron club head for playing golf is provided with a metallic head body forming a recess part on a rear side of face side, and also the recess part is formed on the face side of the head body, and inside of the recess part. A layer which is made from an impact absorbing member having many apertures is equipped with, and through this impact absorbing member a face plate is equipped with.

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 a golf club, and its object is to reduce the impact when hitting and hardly damage an elbow. An object of the present invention is to provide a golf iron club head that can be caught in a spot and can be used without any discomfort even by an advanced player.

[0002]

2. Description of the Related Art Conventionally, golf club heads generally used include those shown in FIGS. 5 and 6. FIG. The iron club head shown in FIG. 5 is of a type that has been used for a long time, and the head body (A) has a substantially wedge-shaped cross-section that tapers from the sole surface (B) to the top surface (C). And are formed entirely of the same metal material. Such an iron club head has a solid shot feeling because the face part is thick,
Although it is a comfortable club head for advanced players, it has a drawback that it is difficult for beginners to hit the sweet spot with the ball due to the high center of gravity of the head. In addition, it was difficult to enlarge the head for enlarging the sweet spot due to weight restrictions. Further, since the entire body is made of a metal material, the impact received at the time of impact is large, and the elbow may be damaged.

On the other hand, the iron club head shown in FIG. 6 is a so-called cavity back in which the center of gravity of the head is lowered by forming a recess (E) on the back side of the face surface (D) of the head body (A). It is a club head called a type, and is easy to use even for a beginner because it is easier to catch a ball at a sweet spot than a conventional type head as described above. At present, this cavity back type iron club head is becoming mainstream. However, such a conventional cavity back type iron club head is easy to catch the ball at the sweet spot, but the impact at the time of hitting to catch the ball at the thin portion is larger than the conventional type, and the elbow is easily damaged There was a disadvantage.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the conventional iron golf club head, so that even a beginner can easily catch a ball at a sweet spot. It is an object of the present invention to provide an iron golf club head which is easy to use even for advanced users, can suppress the impact at the time of hitting, and is hard to damage the elbow.

[0005]

The invention according to claim 1 is
An iron club head including a metal head body having a recess formed on the back side of the face surface, wherein a recess is formed on the face surface of the head body, and the recess has a number of voids therein. The present invention relates to a golf iron club head characterized in that a layer made of a shock absorbing material is provided, and a face plate is attached via the shock absorbing material layer. The invention according to claim 2 is an iron club head including a metal head body having a hollow portion formed therein, wherein the hollow portion of the head body has a large number of voids therein. And an iron club head for golf, wherein a face plate is attached via the shock absorbing material.

The invention according to claim 3 relates to the golf club head according to claim 1 or 2, wherein the shock absorbing material is a foamed metal. The invention according to claim 4 relates to the golf iron club head according to claim 3, wherein the foam metal is foam aluminum. The invention according to claim 5 relates to the golf club head according to claim 1 or 2, wherein the shock absorbing material is a porous metal obtained by sintering metal powder particles. The invention according to claim 6 relates to the golf club head according to claim 1 or 2, wherein the shock absorbing material is a breathable metal.

The invention according to claim 7 relates to the golf club head according to claim 1 or 2, wherein the shock absorbing material is a foamed c / c composite. The invention according to claim 8 is characterized in that the shock absorbing material is a solidified metal wire made of a three-dimensional object in which a metal wire having a fine diameter is irregularly solidified so as to have an appropriate gap. Or a golf iron club head according to 2. The invention according to claim 9 is characterized in that the shock-absorbing material is formed by integrating a required number of small pieces of plate-like aluminum or small pieces of aluminum foam so as to have an appropriate gap. Item 3. A golf iron club head according to item 1 or 2.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a golf iron club head according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a first embodiment of a golf iron club head according to the present invention, and FIG.
FIG. 4 is a sectional view taken along line AA of FIG. The club head according to the first embodiment is a so-called cavity back type head in which a concave portion (2) is formed on the back side of the face surface of a metal head body (1) integrally formed with a hosel portion. The material for the head body (1) can be appropriately selected from known materials used for the head body of a normal iron club head, and can be used, for example, stainless alloy, soft iron, nickel, nickel copper alloy, Examples include beryllium copper alloy, brass, aluminum alloy, titanium, titanium alloy, and the like.

A recess (3) is formed on the face surface of the head body (1) at a constant depth from the face surface.
The recess (3) is provided with a layer made of a shock absorbing material (4), and a face plate (5) constituting a hitting surface of the ball is attached via the shock absorbing material layer. Here, the back surface of the face plate (5), that is, the surface opposite to the face surface is configured to be in close contact with the shock absorbing material (4) over the entire surface. The material of the face plate (5) can be appropriately selected from known materials used for the face surface of a normal iron club head, and may be, for example, titanium, Ni-Ti, Ti-6Al.
-4V, Ti-4.5Al-3V-2Fe-2Mo, T
i-22V-4Al, Ti-15V-3Cr-3Al-
Titanium alloys such as 3Sn and Ti-10V-2Fe-3Al are preferably used.

As the shock absorbing material (4), a material having a large number of voids therein is used. Specifically, a foamed metal, a porous metal, a breathable metal, a foamed c / c composite, a solidified metal wire, An aluminum piece or an integrated aluminum foam lump is preferably used. Since these shock absorbing materials (4) have a large number of voids inside, all of them are lightweight and have excellent shock absorbing performance, and a layer made of these shock absorbing materials (4) is used for the head body (1). The impact at the time of hitting is absorbed by the shock absorbing material (4) by being provided in the concave portion (3) provided on the face surface and attaching the face plate (5) via the shock absorbing material layer, so that a soft shot feeling is obtained. Can be obtained, and the elbow trouble can be prevented. In addition, the head is lighter in weight than the conventional cavity-back type head, and the center of gravity is shifted toward the rear, so that even a beginner can easily climb the ball and gain a flight distance.

A foamed metal is a porous body in which independent or continuous cells obtained by foaming a metal are dispersed in a cell-like manner. For example, the foamed metal may have a viscosity by a method such as alloying, oxidizing molten metal, or dispersing ceramic particles. To the molten metal
A method in which particles such as hydrides and natural minerals that generate a gas near the melting point are added and mixed as a foaming agent, and the generated gas is retained in the molten metal. Titanium hydride is added and mixed, and the method of retaining the decomposed hydrogen gas, or increasing the viscosity by a method according to the molten metal under atmospheric pressure, hydrogen, nitrogen, oxygen or these to the thickened molten metal After injecting a mixed gas or dispersing and mixing particles that generate gas by thermal decomposition of hydrides, nitrides, oxides, hydrous minerals, etc. by stirring and mixing, the gas is dissolved in the molten metal after thickening, By making the atmosphere under a reduced pressure in the range of -400 to -760 mmHg, it can be produced by a method of foaming a molten metal or the like. In the present invention,
Among foamed metals, particularly lightweight aluminum foam is most preferably used. For example, aluminum foam having an apparent specific gravity of 0.2 to 0.3 and a porosity of about 65 to 78% can be used.

As the porous metal, those obtained by sintering metal powder particles can be used. Specifically, after the metal powder is pressed and formed into a predetermined shape by powder metallurgy, Can be obtained by sintering in a non-oxidizing atmosphere. Among the porous metals, particularly lightweight aluminum porous metal is preferably used, and as a method for obtaining the aluminum porous metal, a metal powder such as copper or magnesium that undergoes a eutectic reaction with aluminum is mixed with an aluminum alloy powder, After forming a green compact, this compact is
A method of sintering at 00 to 700 ° C. is exemplified. The maximum porosity of the porous metal is generally about 60%, but can be easily adjusted by the molding pressure.

The permeable metal is a metal in which pores included in a metal body are communicating holes that communicate with the outside. The permeable metal has a permeable property because the pores communicate with the outside. Therefore, the porosity of the permeable metal is as high as 50 to 80%, and the specific gravity is lower than that of the porous metal. As a method for producing this breathable metal, a method of plating a synthetic resin with a metal, and then removing the synthetic resin by heating or chemical treatment,
For example, a method in which soluble particles are packed into a shape, molten metal is pressed into the space between the particles, and only solid particles are melted out after solidification can be exemplified.

The expanded c / c composite is a foam of a c / c composite reinforced with carbon fibers using carbon as a matrix, and the compounding ratio of the carbon fibers in the carbon matrix is 20 to 80%, more preferably 40 to 80%. 60%. Since the heat-resistant temperature of the c / c composite is extremely high at 2000 ° C., it is possible to perform processing in a high-temperature atmosphere that cannot be tolerated by the above-described foamed metal, porous metal, or the like.

[0015] The solidified metal wire can be formed by irregularly solidifying a metal wire having a fine diameter so as to have an appropriate gap to form a three-dimensional object, and fixing the three-dimensional object by plating. Since the porosity of the solidified metal wire obtained by the above method can be changed in a wide range, the specific gravity can be adjusted very easily.

[0016] The plate-like aluminum small pieces or the foamed aluminum small pieces are integrally formed by packing a required number of plate-shaped aluminum small pieces or foamed aluminum small pieces into a mold, compressing them while heating, and then energizing the small pieces. Or a method of welding between small pieces, or a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum entangled with a thermosetting adhesive, packed in a mold, and compression-molded while heating, to form small pieces or small pieces. Can be obtained by a method such as bonding.

FIG. 3 is a front view showing a second embodiment of a golf iron club head according to the present invention, and FIG. 4 is a sectional view taken along line AA of FIG. The club head according to the second embodiment is a head having a conventional external shape that is not a cavity-back type, but its internal structure is significantly different from the conventional one. That is, a hollow portion (6) is formed inside the metal head body (1),
The hollow portion (6) is filled with a shock absorbing material (4), and a face plate (5) constituting a hitting surface of the ball is attached via the shock absorbing material (4).

The material for the head body (1) can be appropriately selected from known materials used for the head body of an ordinary iron club head, and is, for example, a stainless alloy, soft iron, nickel, nickel, or the like. Examples thereof include copper alloys, beryllium copper alloys, brass, aluminum alloys, titanium, and titanium alloys.

The face plate (5) attached to the face surface of the head body (1) is provided such that the back surface, that is, the surface opposite to the face surface is in close contact with the shock absorbing material (4) over the entire surface. The material of the face plate (5) can be appropriately selected from known materials used for the face surface of an ordinary iron club head, and may be, for example, titanium, Ni-Ti, Ti-6Al-. 4
V, Ti-4.5Al-3V-2Fe-2Mo, Ti-
22V-4Al, Ti-15V-3Cr-3Al-3S
n, a titanium alloy such as Ti-10V-2Fe-3Al is preferably used.

As the shock absorbing material (4), a material having a large number of voids therein is used. Specifically, the same material as that of the first embodiment described above, that is, foamed metal, porous metal,
Breathable metal, foamed c / c composite, solidified metal wire,
An aluminum piece or an integrated aluminum foam lump is preferably used. Since these shock absorbing materials (4) have a large number of voids inside, all of them are lightweight and have excellent shock absorbing performance, and the layer made of these shock absorbing materials (4) is hollowed out in the head body (1). By filling the portion (6) and attaching the face plate (5) via the shock absorbing material layer, the impact at the time of hitting is absorbed by the shock absorbing material (4) so that a soft hit feeling can be obtained. It is possible to prevent elbow trouble. In addition, the head is lighter in weight than a conventional head which is not a conventional cavity back type, and the position of the center of gravity of the head can be freely adjusted by appropriately adjusting the capacity of the hollow portion (6) and the specific gravity of the shock absorbing material (4). The head can be adjusted easily, and even a beginner can obtain a head that can easily lift the ball and increase the flight distance.

[0021]

As described above, the invention according to claim 1 is an iron club head provided with a metal head body having a recess formed on the back side of the face surface,
While forming a concave portion on the face surface of the head body,
The golf club according to claim 1, wherein the recess is provided with a layer made of a shock absorbing material having a large number of voids therein, and a face plate is attached via the shock absorbing material layer. To overcome the disadvantage of the back-type iron club head that even a beginner can easily catch the ball at the sweet spot even if it is a beginner, but that the impact at the time of impact is large and the elbow is not easily damaged And an excellent iron golf club head that is lightweight and easy to handle.

According to a second aspect of the present invention, there is provided an iron club head including a metal head body having a hollow portion formed therein, wherein the hollow portion of the head body has a large number of voids therein. Since it is a golf iron club head characterized by filling a shock absorbing material and attaching a face plate via the shock absorbing material, a face of a conventional type iron club head which is not a conventional cavity back type is provided. To eliminate the drawback that the ball is difficult to catch at the sweet spot because the position of the center of gravity and the size of the head are easy to adjust, while taking advantage of the fact that the thickness of the part is thick and a solid hit feeling can be obtained. It becomes an excellent iron golf club head that can perform.

The invention according to claims 3 to 9 is characterized in that the shock absorbing material is a foamed metal, a porous metal, a permeable metal, a foamed c / c
3. The golf club head according to claim 1, wherein the golf club is a composite of a composite, a solidified metal wire, a piece of aluminum or a small piece of foamed aluminum. The impact at the time is absorbed, so that a soft feel at impact can be obtained, and obstruction of the elbow can be prevented. In addition, by appropriately selecting the specific gravity and the porosity of each shock absorbing material, it is possible to provide a club head that is easy to use for both beginners and advanced users.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a golf iron club head according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view showing a second embodiment of the golf iron club head according to the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a cross-sectional view showing one example of a conventional golf iron club head.

FIG. 6 is a cross-sectional view showing an example of a conventional golf iron club head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Head main body 2 Concave part 3 Concave part 4 Shock absorber 5 Face plate 6 Hollow part

Claims (9)

[Claims] 1. An iron club head comprising a metal head body having a recess formed on the back side of a face surface, wherein a recess is formed on the face surface of the head body, and an inner portion is formed in the recess. An iron club head for golf, wherein a layer made of a shock absorbing material having a large number of voids is provided thereon, and a face plate is attached via the shock absorbing material layer. 2. An iron club head provided with a metal head body having a hollow portion formed therein, wherein the hollow portion of the head body is filled with a shock absorbing material having a large number of voids inside. An iron club head for golf, wherein a face plate is attached via the shock absorbing material. 3. The golf club head according to claim 1, wherein the shock absorbing material is a foam metal. 4. The golf club head according to claim 3, wherein the foam metal is foam aluminum. 5. The iron club head for golf according to claim 1, wherein the shock absorbing material is a porous metal obtained by sintering metal powder particles. 6. The golf club head according to claim 1, wherein the shock absorbing material is a breathable metal. 7. The golf club head according to claim 1, wherein the shock absorbing material is a foamed c / c composite. 8. A metal wire solidified body made of a three-dimensional object in which a metal wire having a fine diameter is irregularly solidified so as to have an appropriate gap, wherein the shock absorbing material is formed. Golf club head. 9. The shock-absorbing material is formed by integrating a required number of small pieces of plate-like aluminum or small pieces of aluminum foam so as to have an appropriate gap. 3. The iron club head for golf according to 2.