JP2020103881A - Golf head - Google Patents

Abstract

To provide a golf head.SOLUTION: A golf head comprises: a dual-density housing that includes a body having a top, a face part, a hosel part and a bottom with an opening, and a sole part, the material density of which is higher than the material density of the body, which covers the opening of the bottom, in which a part getting away from the face part is connected to the bottom and which has a clearance provided between the bottom and a part near the face part; and an elastic member that is provided in the clearance.SELECTED DRAWING: Figure 2

Description

The present invention relates to a golf head, and more particularly to a golf head having a high moment of inertia (MOI) and a low center of gravity position.

Golf is one of the most popular leisure and sporting activities, and different functions design different heads of golf clubs. For example, a driver is required to hit a ball at a long distance, so that the shaft is designed to be long and the head has a large volume. Further, when the tee off is performed first, since the golf ball is placed on the golf tee, the user can hit the sweet spot relatively easily.

Once the golf ball enters the fairway, the user hits it with a Fairway Wood. However, since the golf ball is located on the ground at this stage, it is difficult for the user to hit at the sweet spot, and when hitting the ball without the sweet spot, the head easily rotates and the hitting direction deviates largely from the target. There is. Therefore, it is already one of the development points for those skilled in the art how to lower the center of gravity of the head while obtaining a high moment of inertia (MOI).

Therefore, one of the objects of the present invention is to provide a golf head having a deep, low center of gravity and a large inertia moment.

According to the above-mentioned object of the present invention, a main body having a top portion, a face portion, a hosel portion for mounting a shaft, and a bottom portion having an opening, and having a first bent portion provided at a peripheral edge of the opening of the bottom portion close to the face portion. And the material density is higher than the material density of the main body, covers the opening at the bottom, connects the part away from the face part to the bottom part, and has the second bent part at the part close to the face part. A golf head including a double-density housing including a sole portion having a gap between the bent portion and the first bent portion, and an elastic member provided in the gap is submitted.

According to an embodiment of the present invention, the material density of said body is in the range of ^{4.3g / cm 3 ~4.8g / cm 3} , the material density of the sole portion is 7.0 g / cm ³ or more.

According to an embodiment of the present invention, the main body is made of titanium and the sole portion is made of stainless steel.

According to one embodiment of the present invention, the golf head includes a plurality of locking members provided on a part of a peripheral edge of the sole portion away from the face portion so as to seal the opening with the sole portion.

According to an embodiment of the present invention, the sole portion covers only a part of the elastic member.

According to an embodiment of the present invention, the elastic member is covered by one end of the second bent portion, a part of which is located in the gap, and another part of which is located outside the sole portion.

According to an embodiment of the present invention, the face portion is a single metal member or a part of an integrally cast body.

According to one embodiment of the present invention, the body is of carbon fiber composite.

According to an embodiment of the present invention, the top portion, the hosel portion and the bottom portion of the main body are integrally molded carbon fiber composite structure.

As can be seen from the above, the present invention mainly achieves to change the center of gravity of the golf head by forming the dual density housing by the separate design of the main body and the sole portion, and further, to position the golf head on the ground. Even when you do, you can easily hit the sweet spot. On the other hand, by tightening the lock member to the periphery of the sole part away from the face part, the center of gravity of the golf head is moved in the direction away from the face part, the inertia moment of the entire golf head is increased, and the flight distance and directionality of the hit ball are further increased. Can be more stable.

Further, the elastic member of the present invention is provided in the gap between the main body and the sole portion to increase the elastic deformation at the time of hitting the ball to improve the resilience performance of the head and to provide the functions of cushioning and shock absorption. It also has a function of preventing foreign matter from entering from the outside.

For a more complete understanding of the embodiments and their advantages, please refer to the following description in conjunction with the accompanying drawings.
1 is a perspective schematic view showing a golf head according to an embodiment of the present invention. 1 is an exploded schematic view showing a golf head according to an embodiment of the present invention. 1 is a schematic sectional view showing a golf head according to an embodiment of the present invention.

Please refer to FIG. 1 to FIG. 3 which are a perspective schematic view, an exploded schematic view and a schematic sectional view, respectively, showing a golf head according to an embodiment of the present invention. The golf head 100 of this embodiment mainly includes a double-density housing 200, an elastic member 300, and a plurality of lock members 400. The dual density housing 200 includes a body 210 and a sole portion 220.

In this embodiment, the body 210 is an open housing having a top portion 211, a face portion 212, a bottom portion 213, and a hosel portion 214. The face portion 212 is located between the top portion 211 and the bottom portion 213, the hosel portion 214 is located on one side of the top portion 211, and the bottom portion 213 has an opening 213a. It should be noted that the above definitions of “top”, “bottom”, and “sole” are not the orientations shown in FIGS. 1 and 2, but the orientation when the golf head 100 is actually used. (For example, the orientation of FIG. 3). That is, the viewing angles shown in FIGS. 1 and 2 are not intended to be the angles in actual use, but are mainly for the purpose of clearly explaining the design of the present invention.

Continuing to refer to FIGS. 1-3, the sole portion 220 is connected to the bottom portion 213 of the body 210 and covers and seals the opening 213 a of the bottom portion 213. In this embodiment, the material density of the sole portion 220 is higher than the material density of the main body 210. Specifically, the purpose of adjusting the center of gravity of the entire golf head 100 can be achieved by combining the heavy body 210 with the heavy sole portion 220. In one embodiment, the material density of the sole portion 220 is greater than or equal to about 7.0 g/cm ³ and the material density of the body 210 is in the range of about 4.3 g/cm ³ to about 4.8 g/cm ³ . In one illustrative example, the sole portion 220 is made of stainless steel and the body 210 is made of titanium. Accordingly, by designing the material density of the sole portion 220 to be higher than the material density of the main body 210, the center of gravity of the entire golf head 100 is moved downward, and the golf ball with the golf head 100 positioned on the ground surface is moved to the face surface. You can easily hit at the sweet spot above. In another example, the body 210 may be a stainless steel body and the sole portion 220 may be a tungsten alloy sole portion to meet different usage requirements. Or, in some examples, the body 210 may be of carbon fiber composite. In other embodiments, the face portion 212 may be an independent member by itself or may be a part of the body 210. For example, the face portion 212 may be a single metal member or may be part of the body 210 that is integrally cast. In one particular example, the top portion 211, bottom portion 213, and hosel portion 214 of body 210 are an integrally molded carbon fiber composite structure.

As shown in FIGS. 1 to 3, in the present embodiment, the sole portion 220 is fastened to the main body 210 by the lock member 400. Specifically, the portion of the sole portion 220 that is separated from the face portion 212 is connected to the bottom portion 213 of the main body 210 by the lock member 400. In some examples, locking member 400 can be a screw. In this embodiment, the lock member 400 has a function of weight distribution in addition to the function of fixing the sole portion 220 to the main body 210. By fixing the lock member 400 to a portion of the sole portion 220 away from the face portion 212, the center of gravity of the golf head 100 is moved in a direction away from the face portion 212, and the main body 210 and the sole portion 220 are formed in combination. Since the center of gravity of the entire golf head 100 can be made low and deep according to the design of the dual density housing, and the moment of inertia (MOI) of the entire golf head 100 can be increased, the golf head 100 becomes a suite. Since the ball does not rotate easily when the ball is hit with the spot removed, the distance and direction of the ball are more stable.

In some embodiments, both the number and material of locking members 400 may be dictated by usage requirements or different design requirements. Because lock members 400 of different materials have different densities and weights, different materials and numbers of lock members 400 may be selected for different demanding users to obtain different golf head designs. It should be noted that in the above embodiment, the connection form between the main body and the sole portion is not limited to the joining by the lock member. In other embodiments, the sole portion may be joined to the body such that it is brazed or glued, and the use of locking members may be omitted.

As shown in FIG. 3, when the sole portion 220 is fixed to the main body 210, there is a gap G between a portion of the sole portion 220 close to the face portion 212 and the bottom portion 213 of the main body 210. It is an elastic deformation space that improves the repulsion of the face portion 212 of the main body 210 when the golf head 100 hits a golf ball. In the present embodiment, the elastic member 300 may be provided in the gap G. The elastic member 300 can absorb the vibration force generated when the golf head 100 hits a golf ball, and increase the repulsive force at the time of hitting the ball. The hitting performance can be improved. Specifically, the sole portion 220 is connected to the bottom portion 213 of the main body 210 by the locking member 400 only at the portion away from the face portion 212, and the portion near the face portion 212 and the bottom portion 213 of the main body 210 are fixed to each other. Instead, the elastic members 300 abut each other to form a cushioning structure. Further, by providing the elastic member 300, it is possible to change the hitting sound generated when hitting the golf head 100 and obtain a better hitting sound. On the other hand, the elastic member 300 has a function of sealing the bottom portion 213 of the main body 210, and can prevent external foreign matter such as earth and sand and lawn from entering the inside of the golf head 100. In some specific embodiments, when the material of both the body 210 and the sole portion 220 is a metal, the elastic member 300 absorbs the impact force generated when the two metal materials hit the ball, and the metal portion. It is possible to avoid plastic deformation.

In one specific example, as shown in FIGS. 2 and 3, the main body 210 has a first bent portion 215 provided at a peripheral edge of the opening 213 a of the bottom portion 213 near the face portion 212. The sole portion 220 has a second bent portion 221 provided in a portion near the face portion 212. The gap G is formed between the first bent portion 215 and the second bent portion 221. In this embodiment, the elastic member 300 has a C-shaped cross section, and is covered and sandwiched by the end portion of the second bent portion 221 of the sole portion 220. Accordingly, by sandwiching the elastic member 300 between the ends of the second bent portion 221, and fixing the portion of the sole portion 220 away from the face portion 212 to the main body 210, the elastic member 300 is directly attached to the sole portion 220. It can be pressed so as to be fixed between the first bent portion 215 and the second bent portion 221. Therefore, by fixing the elastic member 300 to the first bent portion 215 and the second bent portion 221, the elastic member 300 can be fixed without separately using a fixing material such as an adhesive, a screw, or brazing. The purpose to be achieved is achieved.

In the present embodiment, a part of the elastic member 300 is located in the gap G and another part is located outside the sole portion 220. That is, the sole portion 220 does not completely cover the elastic member 300, but covers only a part of the elastic member 300. Due to the design in which a part of the elastic member 300 is exposed, the assembly worker can quickly inspect whether the elastic member 300 is attached, and the user can know whether the elastic member 300 is damaged. Further, the design in which a part of the elastic member 300 is exposed is regarded as the appearance design of the golf head 100, and the visual characteristics of the product can be increased.

In one example, the material of elastic member 300 may be a non-metallic material such as rubber, plastic, or silicon. In a particular example, the material of the elastic member 300 may be a thermoplastic polyurethane elastomer (TPU) material.

As can be seen from the above-described embodiments of the present invention, the present invention mainly achieves a dual density housing by a separate design of a main body and a sole portion, and achieves a change in weight distribution of the entire golf head. When hitting a golf ball located on the ground, the golf head can more easily hit the sweet spot on the face surface. On the other hand, by separating the lock member from the face portion of the sole portion and tightening it to the peripheral edge, the center of gravity of the golf head is moved in the direction away from the face portion, the inertia moment of the entire golf head is increased, and the distance and direction of the hit ball are further improved. Can be stabilized.

Further, the elastic member of the present invention is provided in the gap between the main body and the sole portion, and has the function of preventing the intrusion of external foreign matter, in addition to providing the functions of cushioning and shock absorption.

Although the present disclosure has been disclosed above by the embodiments, this is not intended to limit the present disclosure, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure is based on the content specified in the following claims.

100 Golf Head 200 Double Density Housing 210 Main Body 211 Top 212 Face 213 Bottom 213a Opening 214 Hosel 215 First Bend 220 Sole 221 Second Bend 300 Elastic Member 400 Lock Member G Gap

Claims (9)

A main body having a top portion, a face portion, a hosel portion, and a bottom portion having an opening, and a first bent portion provided at a peripheral edge of the opening portion of the bottom portion near the face portion; The second bent portion has a density higher than the density, covers the opening of the bottom portion, and a portion thereof away from the face portion is connected to the bottom portion, and a portion near the face portion has a second bent portion. A dual-density housing including a sole portion having a gap between the first bent portion and the first bent portion;
An elastic member provided in the gap,
A golf head. The material density of the body is in the range of ^{4.3g / cm 3 ~4.8g / cm 3} , golf head according to claim 1 material density of the sole portion is 7.0 g / cm ³ or more. The golf head according to claim 1, wherein the main body is made of titanium, and the sole portion is made of stainless steel. The golf head according to claim 1, further comprising a plurality of locking members provided on a part of a peripheral edge of the sole portion away from the face portion so as to seal the opening with the sole portion. The golf head according to claim 1, wherein the sole portion covers only a part of the elastic member. The golf head according to claim 1, wherein the elastic member is covered with one end of the second bent portion, a part thereof is located in the gap, and another portion is located outside the sole portion. The golf head according to claim 1, wherein the face portion is a single metal member or a part of the body integrally cast. The golf head according to claim 1, wherein the main body is made of a carbon fiber composite material. The golf head according to claim 7 or 8, wherein the top portion, the hosel portion, and the bottom portion of the main body have a carbon fiber composite structure integrally formed.

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