JPH0648723U - Golf club head - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a golf club head having a large moment of inertia, a small density, a wide sweet spot area, easy control of the direction of a hit ball, and further improved flight distance of the hit ball. [Structure] Head body 1 made almost of a metal material
No. 0 is provided with a storage chamber 20 opening to the club face 15, the storage chamber 20 penetrates to a window 30 formed in the back surface portion 14 of the head body 10, and a heating / pressurization is performed using a mold. By the method, the composite material 40 such as a carbon fiber-containing resin material is filled and fixed in the storage chamber 20 and the window 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a golf club head. More specifically, it relates to a golf club head using a composite material.

[0002]

[Prior art]

 Most conventional golf club heads are purely made of stainless steel or other metal materials. Especially, the club head made of stainless steel has excellent strength, high hardness, good feel at impact, and low cost. As a result, the average user has an unforgettable attachment to the stainless steel club head. But overall, pure metal club heads still have their problems. Examples include high density, small volume, small moment of inertia and small club face area.

Therefore, in recent years, golf club head manufacturers have developed a club head in which the sole portion of the club head is made of a metal material and the head body is made of a composite material such as a carbon fiber-containing resin. However, as a result of being used by a user, this type of club head is expensive, the center of gravity is too low, and the surface is easily worn or cracked, which makes the market unresponsive.

[0004] In 1992, the US PGA (Professional Golfers' Association) allowed the club head to be manufactured from two or more kinds of materials, so that the metal head body was made of a composite material such as carbon fiber-containing resin. There are a large number of club heads that have been installed on the market. However, there is a problem with the bonding strength between the metal head body and the carbon fiber-containing resin, and at the same time, there is still no favorable reaction because it has not been taken out of the primitive design concept of the pure metal club head. .

[0005]

SUMMARY OF THE INVENTION In view of the problems in the conventional pure metal golf club head, the present invention is made by using a composite material such as a carbon fiber-containing resin in combination to reduce the density and thereby the head body. By increasing the sweet spot area of the golf club, increasing the moment of inertia of the club face, and appropriately lowering the center of gravity, the direction of the hit ball can be easily controlled, and the flight distance of the hit ball can be further improved. The purpose is to provide.

[0006]

[Means for Solving the Problems]

 In the golf club head of the present invention, a head chamber made of a substantially metallic material is provided with a storage chamber opening to the club face, and the storage chamber is penetrated through a window formed on the back surface of the head body. In addition, a composite material such as a carbon fiber-containing resin is filled and fixed in the storage chamber and the window by a heating and pressurizing method using a mold.

A plurality of windows are formed, and convex ribs facing the storage chamber are provided between the windows so that the composite material and the metal material portion of the head body can be firmly bonded to each other. Has been done.

Then, the storage chamber penetrates directly into the back surface of the head body, and convex ribs are provided on both side walls of the storage chamber so that the composite material is firmly filled and fixed in the head body. Is preferably provided.

It is more preferable that the area of the composite material positioned on the back surface side is ⅕ of the area of the composite material positioned on the club face side.

The club face referred to in the scope of utility model registration claims is the surface of the golf club head on the side where the ball is hit.

[0011]

[Action]

 In the golf club head of the present invention constructed as described above, the dense metal material is disposed on the outer peripheral edge of the head body, and the low density composite material is formed in the central portion of the head body. , The sweet spot area on the club face becomes wider due to the larger volume, and the center of gravity is moderately lowered to have a relatively large inertia moment. At the same time, since the metal material provided on the outer peripheral edge of the head body has relatively high wear resistance, the composite material inside the head body can be protected. Moreover, since the composite material such as the low-density carbon fiber-containing resin is bonded to the metal material to be formed, the weight distribution of the head body can be made more ideal.

By providing a plurality of windows of the head main body and providing convex ribs facing the storage chamber between the windows, the composite material and the metal material portion of the head main body can be firmly joined. In addition, the storage chamber is directly penetrated into the back surface of the head main body, and convex ribs are provided on both side walls of the storage chamber to firmly fill and fix the composite material in the head main body. Even if the area of the composite material positioned on the back surface side is made 1/5 of the area of the composite material positioned on the club face side, a head body having a similar action can be manufactured.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0014]

【Example】

 First, FIG. 1 shows an embodiment of the golf club head of the present invention.

FIG. 1A is a front view of the club face side, FIG. 1B is a partially cutaway plan view, FIG. 1C is a rear view, and FIG. FIG. 1A and FIG. 1C show a state in which the internal composite material is removed for easy understanding.

The head body 10 is substantially made of a metal material (in this embodiment, stainless is taken as an example), and this metal material is used for the neck portion 11, the heel portion 12, the sole portion 13 and the back surface portion of the head body 10. 14 and the club face 15 are distributed around the periphery. Further, when the head body 10 is molded with a metal material, a storage chamber 20 that opens to the club face 15 of the head body 10 is formed, and the storage chamber 20 is provided on the back surface portion 14 of the head body 10 in a predetermined manner. The windows 30 communicate with each other (the number of windows is three in this embodiment). Then, the composite material 40 is filled and fixed in the storage chamber 20 and the window 30 by a heating and pressurizing method using a mold (not shown) (in this embodiment, the carbon fiber-containing resin is a composite material). Used as). Further, by providing the protruding ribs 50 facing the storage chambers 30 between the windows 30, respectively, the composite material 40 and the metal material portion of the head body 10 can be firmly bonded.

Next, a sweet spot (SWEET SPOT) referred to by a golf equipment trader will be described as follows. That is, (1) Best Hitting Position (Sweet Point) Generally, a golf club head swings a club at a constant speed to accurately obtain a golf ball of a predetermined weight based on the characteristics of its weight distribution (that is, inertia moment). When hit at a certain position in, the golf ball can generate the fastest initial velocity. This position is called a sweet point.

(2) Sweet Spot Area The position at which the golf ball has the highest initial flight speed is usually not one point but one area, and in terms of practical use, generally the fastest flight initial speed is set. The area range with an approximately 95% probability of occurrence is called a sweet spot.

(3) Sweet Spot Area on the Club Face The sweet spot area is usually a sweet spot on the club head face. The wider the area, the faster the flight speed of the golf ball hit by the club head. It means that the probability of reaching the maximum speed reaches 95%, and therefore, the probability that the golf ball can fly relatively far increases.

Next, the effects that can be achieved by the golf club head will be described. (4) The head body 10 has a high density (for example, 7.8 g / cc) metal material provided on the outer peripheral edge of the head body 10. However, the central portion of the head body 10 is formed of a composite material 40 having a low density (for example, 1.56 g / cc) that is inserted and connected from the club face 15 to the back surface portion 14. The structure of the head main body 10 having such a weight distribution can appropriately lower the center of gravity, has a relatively large moment of inertia, and can increase the sweet spot area in the club face 15 of the head main body 10. The chances of keeping the initial velocity of a golf ball flying out of the air within 95% of the probability that the maximum velocity will occur will be greater. In addition, since the hitting probability is also improved, miss shots are significantly reduced, the accuracy of the hitting direction is improved, and the hitting force is increased.

(5) Since the metal material having wear resistance is provided on the outer peripheral edge of the head main body 10, the composite material 40 inside the head main body 10 is protected, so that impact or rubbing against the ground is obtained. Is not damaged and therefore has a long service life.

(6) On the other hand, since the composite material 40 of the low-density carbon fiber-containing resin is joined to the metal material, the weight distribution of the head body 10 can be designed more elastically. Moreover, the volume of the club head is larger than that of the conventional club head made of pure metal material, the moment of inertia is increased, the impact on the golf ball is stronger, and the center of gravity is appropriately lower than that of the conventional pure metal club head. As a result, the flight distance of the golf ball is improved.

FIG. 2 shows another embodiment of the present invention. 2A is a front view of the club face side, FIG. 2B is a partially cutaway plan view, FIG. 2C is a back view, and FIG. 2D is a partially cutaway side view. For the sake of easy understanding, FIGS. 2A and 2C show a state in which the internal composite material is removed. As shown in the drawing, the structure is almost the same as that of the above-described embodiment (FIG. 1), except that the storage chamber 70 of the head main body 60 is directly penetrated into the back surface portion 64 of the head main body 60. The area of the composite material 90 positioned on the back surface 64 side is made 1/5 of the area of the composite material 90 positioned on the club face 65 side, and the raised ribs 80 are provided on both side walls of the storage chamber 70. It's about to come. Thereby, the composite material 90 is firmly fixed in the head body 60. With such a design, this embodiment can be provided with the same effects as the above embodiments.

[0024]

[Effect of device]

 The golf club head of the present invention has a dense metal material on the outer periphery of the head body and a low density composite material on the central portion of the head body. Since the area is increased, a relatively large moment of inertia is provided, the center of gravity of the head body is appropriately lowered, and the probability that the initial flight speed of the golf ball is maintained at the maximum speed is increased. The hitting probability is also improved, the number of miss shots is greatly reduced, and the hitting force given to the golf ball is increased, so that the golf ball can be blown at a longer distance. Moreover, since the wear-resistant metal material is arranged on the outer peripheral edge of the head body, the composite material inside the head body can be protected, and moreover, it is damaged by impact or friction with the ground. Never. Therefore, the service life is extended. On the other hand, since the composite material of low-density carbon fiber-containing resin is bonded to the metal material, the weight distribution of the head body can be made more ideal.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a golf club head of the present invention.

FIG. 2 is an explanatory view showing another embodiment of the golf club head of the present invention.

[Explanation of symbols]

 10, 60 Head body 15, 65 Club face 14, 64 Back part 20, 70 Storage chamber 50, 80 Convex rib 30 Window 40, 90 Composite material

Claims (4)

[Scope of utility model registration request] 1. A head body made of a substantially metallic material is provided with a storage chamber opening to a club face thereof, the storage chamber being penetrated through a window formed on a back surface of the head body, and a mold A golf club head in which a composite material such as a resin containing carbon fiber is filled and fixed in the storage chamber and the window by a heating and pressurizing method. 2. A plurality of the windows are formed, and convex ribs facing the storage chamber are provided between the windows so that the composite material and the metal material portion of the head body can be firmly bonded to each other. The golf club head according to claim 1, wherein 3. The storage chamber penetrates directly into the back surface of the head main body, and convex ribs are provided on both side walls of the storage chamber so that the composite material is firmly filled and fixed in the head main body. The golf club head according to claim 1. 4. The golf club head according to claim 3, wherein the area of the composite material positioned on the back surface side is one fifth of the area of the composite material positioned on the club face side.