TWM660708U - Golf club shaft structure - Google Patents

Abstract

The invention provides a golf club shaft structure, which includes: a body, which is a hollow body with two ends. One of the characteristics of the improved scheme is that: the body is coated with a layer of metal sheet material. After the metal sheet material is coated on the body, the overall cross-section is similar to a tree ring structure. Thus, one end of the metal sheet material coated on the body is connected to the handle; the other end is connected to the club head, giving the golf club good elasticity and strong toughness, providing a long-range and accurate swing process that is easy to control.

Description

Golf club shaft structure

This work is about a golf club shaft structure, specifically a golf club shaft structure that combines the advantages of two different materials, metal and carbon fiber, to give the shaft good elasticity and toughness, making the distance and accuracy of the swing process easy to control.

Golf clubs are used in different ways according to different hitting requirements, so the club heads on golf clubs also have different designs. For example, the initial "swing" is to make the ball fall closer to the hole on the green, so the shape of the club head will be different from the "putt" design that is already near the hole on the green. There are many innovative structures in the design of such club heads. As for the shaft of golf clubs, from the early metal material to carbon fiber material, to the current metal material plus carbon fiber material, it is constantly being improved to provide more diverse choices for golf enthusiasts.

However, when the golf club shaft is used for "putting" and "swinging", the user's own feel and strength are very important for the accuracy and stability of ball control. In addition to regular practice, the influence of the coordination between the golf club head and the shaft is also directly related. For example, the shaft is made of metal because it is heavier, and the rolling stability of the trajectory after hitting the ball is better in "putting" or "swinging". However, the rolling or airborne distance of the ball is shorter if the shaft is made of carbon fiber because it is lighter. Therefore, no matter in "putting" or "swinging", the rolling or airborne distance of the ball after hitting the ball will be longer (but the rolling stability of the ball trajectory is worse). Based on this, it seems that individuals can achieve ideal ball control by choosing a suitable shaft (metal or carbon fiber) according to the center of gravity and strength of their own hitting posture. However, it is difficult for beginners who like golf to choose a suitable shaft (metal or carbon fiber) according to their center of gravity and strength of hitting posture. Although experienced players can choose a shaft that suits them, due to the limitation that the shaft is made of metal or carbon fiber, it is difficult to control the rolling of the ball after hitting the ball during "putting" or "swinging", especially the stability of the trajectory rolling or the distance and accuracy during the "swinging" process are even more difficult to control.

Furthermore, the shaft of the golf club is made of metal and carbon fiber. Although it provides another choice for golfers and seems to be able to bring into play the characteristics of the metal and carbon fiber materials, it is not actually the case. Please refer to FIG. 1 for further understanding. The structure of the shaft 5 includes: an inner carbon fiber layer 51 and an outer metal layer 52, wherein the carbon fiber layer 51 is composed of carbon fibers with different angles; the metal layer 52 is a metal wire spirally wound around the outer surface of the carbon fiber layer 51. Therefore, there is a gap between the inner carbon fiber layer 51 and the metal layer 52 in the overall structure. As a result, the rolling of the ball after hitting the ball as expected by "putting" or "swinging" is also difficult to control, especially the stability or distance and accuracy of the trajectory rolling during the "swinging" process is also difficult to control. The main reason is that after hitting the ball, the force on the carbon fiber layer 51 of the entire shaft 5 is only partially absorbed by the metal layer 52 that is spirally wound around the outer surface of the carbon fiber layer 51, and most of the force penetrates and explodes from the existing gaps between the metal wires. The metal wires added to the outer surface of the carbon fiber layer 51 cannot play the role of effectively absorbing the impact force when hitting the ball. The ball control effect on the golf ball is basically the same as before the winding.

In view of this, the creator of this case, based on his many years of experience in composite material research, created this creation after several years of research.

The purpose of this invention is to provide a golf club shaft structure, which has the characteristics of both metal and carbon fiber materials, and can give the shaft good elasticity and strong toughness. The metal material adopts a thin sheet design and a full-coverage setting, which can not only effectively solve the inter-layer peeling between the contact surfaces of different materials, but also can provide full and effective absorption of the force impact when the ball is hit, instead of the problem of the known method of spirally winding the metal wire to penetrate through the gap and fail to absorb the force impact, thereby making the distance and accuracy of the golf club swing process easy to control.

In order to achieve the above-mentioned purpose, the shaft structure of the golf club is created, and the shaft structure includes: a body, which is a hollow body with two ends. The characteristics of the improved scheme are: the body is coated with a layer of metal sheet material, and the overall cross-section of the metal sheet material after coating the body is similar to a tree ring structure. Thus, one end of the metal sheet material after coating the body is assembled with the handle; the other end is assembled with the club head, which can provide the golf club with good elasticity and strong toughness.

According to the above characteristics, the layer of metal sheet material is fully coated on the body, and the thickness of the metal sheet material is less than 0.4 mm. The metal sheet material can effectively solve the interlayer peeling caused by the extremely different expansion coefficients between the different coated materials. That is, due to the relatively small volume change of the metal sheet material, when the coated object is a carbon fiber material, the interlayer peeling stress generated by the metal sheet material will be relatively small, and the interlayer peeling between the contact surfaces of different materials (carbon fiber material and metal material) can be effectively solved. On the contrary, an overly thick metal layer cannot solve the significant impact caused by interlayer peeling on the contact surface. Therefore, the thickness of the metal sheet material in this creation is set to less than 0.4mm, which can ensure the stability of the bonding between the joint surfaces of the different materials covered.

The shaft structure of the golf club of the invention is further improved in that the main body is coated with at least one layer of mutually stacked metal sheet material and carbon fiber material, that is, the at least one layer of metal sheet material and carbon fiber material are mutually and comprehensively coated on the main body, and the overall cross-section is similar to a tree ring structure.

According to the features of the above-mentioned improved solutions, the material of the metal sheet can be selected from one of aluminum, aluminum alloy, copper, steel, titanium, titanium alloy, and magnesium aluminum alloy, and its thickness is less than 0.4 mm.

According to the features of the above-mentioned improved solutions, when the mutually stacked metal sheet material and carbon fiber material are stacked in multiple layers, the outermost layer is the carbon fiber material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm.

According to the characteristics of the above-mentioned improved schemes, when the mutually stacked metal sheet material and carbon fiber material are stacked in multiple layers, the outermost layer is the layer of metal sheet material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm.

Please refer to FIG. 2 which is a three-dimensional diagram of a first embodiment of a golf club having a shaft structure of the present invention. As shown in the figure, a golf club 1 has a shaft 2 of the present invention. The structure of the shaft 2 includes: a body 20 which is a hollow body having two ends 21, 22 and is formed by stacking carbon fibers. The characteristic of the body 20 is that at least one layer of metal sheet material 23 is coated on the outside of the body 20 (see FIGS. 3 to 5 ). After the metal sheet material 23 is coated on the body 20, the overall cross-section is similar to a tree ring structure, so that the body 20 can have better toughness. After the metal sheet material 23 is coated on the body 20, one end 21 of the body 20 is used to be assembled with the handle 3 (shown by the dotted line); and the other end 22 is used to be assembled with the club head 42 (shown by the dotted line).

Please refer to FIG. 3 for further structural features of the creative shaft 2. The main body 20 is coated with a layer of metal sheet material 23 and a carbon fiber material 24, that is, the layer of carbon fiber material 24 and the layer of metal sheet material 23 are fully coated on the main body 20, and the overall cross-section is similar to a tree ring structure, wherein the layer of metal sheet material 23 can be selected from one of aluminum, aluminum alloy, copper, steel, titanium, titanium alloy, and magnesium aluminum alloy, and its thickness is less than 0.4 mm. The layer of carbon fiber material 24 is coated on the metal sheet material 23, and the thickness of the layer of carbon fiber material is greater than that of the layer of metal sheet material 23. By setting the expansion coefficients of the layer of carbon fiber material 24 and the layer of metal sheet material 23 to be different, the volume change of the metal sheet material 23 is relatively small, so the interlayer peeling stress generated by the volume change of the carbon fiber layer 24 and the metal layer 23 is relatively small, which can effectively solve the interlayer peeling between the contact surfaces of different materials. On the contrary, an overly thick metal layer cannot solve the significant impact caused by interlayer peeling of the contact surface, thereby making the bonding between the carbon fiber material layer 24 and the metal sheet material layer 23 stable. In addition, the body 20 is made of carbon fiber material. If the metal sheet material 23 and carbon fiber material 24 coated on the body 20 of the invention are matched, the shaft 2 can be provided with better elasticity and toughness.

Therefore, the shaft 2 structure of the golf club of the present invention has the characteristics of combining the advantages of two different materials, metal material and carbon fiber material, as described above, which can give the shaft 2 good elasticity and strong toughness, making the distance and accuracy of the swing process easy to control, that is, the body 20 of the golf club of the present invention is fully covered by the layer of carbon fiber material 24 and the layer of metal sheet material 23, which can provide the expected rolling of the ball after hitting the ball in "putting" or "swinging", and especially the trajectory rolling stability or distance and accuracy in the "swinging" process are also easy to control.

Please refer to FIG. 4 and FIG. 5 for cross-sectional views of the second and third embodiments of the shaft structure of the golf club of the present invention. As shown in FIG. 4 and FIG. 5, the main body 20' and 20" structure of the shaft 2' and 2" of the golf club of the present invention, wherein the mutually fully-coated metal sheet material 23' and 23" and carbon fiber material 24' and 24" are more multi-layered than the aforementioned first embodiment, that is, the metal sheet material 23' and carbon fiber material 24' are alternately layered and coated on the main body 20' and 20". The overall cross-section is similar to the tree ring structure, which can give the shaft 2’,2” good elasticity and strong toughness, achieving the effect of making the long range and precision of the swing process easy to control.

In summary, the shaft structure of the golf club of this invention can indeed achieve the purpose of the invention and meets the patent requirements. However, the above is only the preferred embodiment of the invention. Generally speaking, various modifications and changes made according to the invention, for example, the shaft of the golf club of this invention is fully coated with multiple layers of metal sheet material and carbon fiber material, and the outermost layer after the coating is metal sheet material, should still be included in the scope of this patent application.

1: Golf club 2,2’,2”: Shaft 3: Grip 21: One end of the body 22: The other end of the body 42: Head 20,20,20”: Body 23,23’,23”: Metal sheet material 24,24’,24”: Carbon fiber material

FIG. 1 is a schematic diagram of a conventional golf club shaft made of metal wrapped around a carbon fiber material surface. FIG. 2 is a three-dimensional diagram of a golf club having the shaft structure of the present invention. FIG. 3 is a cross-sectional view of the first embodiment of the shaft structure of the present invention. FIG. 4 and FIG. 5 are cross-sectional views of the second and third embodiments of the shaft structure of the present invention.

2:Shaft

20: Body

23: Metal sheet material

24: Carbon fiber material

Claims (23)

A golf club shaft structure includes a main body which is a hollow body with two ends. The main body is coated with a layer of metal sheet material. After the metal sheet material is coated on the main body, the overall cross-section is similar to a tree ring structure. The golf club shaft structure as described in claim 1, wherein the layer of metal sheet material is fully coated on the body. A golf club shaft structure as described in claim 1, wherein the thickness of the metal sheet material is less than 0.4 mm. The golf club shaft structure as described in claim 1, wherein the layer of metal sheet material is further coated with at least one layer of mutually stacked metal sheet material and carbon fiber material. A golf club shaft structure as described in claim 4, wherein when the metal sheet material and the carbon fiber material are stacked in multiple layers, the outermost layer is the carbon fiber material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm. A golf club shaft structure as described in claim 4, wherein when the metal sheet material and the carbon fiber material are stacked in multiple layers, the outermost layer is the metal sheet material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm. The shaft structure of a golf club as described in any one of claims 1 to 6, wherein the material of the metal sheet layer can be selected from one of aluminum, aluminum alloy, copper, steel, titanium, titanium alloy, and magnesium aluminum alloy. A golf club shaft structure as described in claim 1, wherein the body is made of carbon fiber material. A golf club shaft structure as described in claim 1, wherein the body is made of metal. A golf club shaft structure includes a main body which is a hollow body with two ends. The main body is coated with at least one layer of mutually stacked metal sheet material and carbon fiber material. After the metal sheet material and carbon fiber material are coated on the main body, the overall cross-section is similar to a tree ring structure. The golf club shaft structure as described in claim 10, wherein the layer of carbon fiber material and the layer of metal sheet material are fully coated on the body. A golf club shaft structure as described in claim 10, wherein when the metal sheet material and the carbon fiber material are stacked in multiple layers, the outermost layer is the carbon fiber material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm. A golf club shaft structure as described in claim 10, wherein when the metal sheet material and the carbon fiber material are stacked in multiple layers, the outermost layer is the metal sheet material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm. The shaft structure of a golf club as described in any one of claims 10 to 13, wherein the material of the metal sheet layer can be selected from one of aluminum, aluminum alloy, copper, steel, titanium, titanium alloy, and magnesium aluminum alloy. A golf club shaft structure as described in claim 10, wherein the body is made of carbon fiber material. A golf club shaft structure as described in claim 10, wherein the body is made of metal material. A golf club shaft structure includes a body which is a hollow body with two ends. The body is coated with at least one layer of mutually stacked metal sheet material and carbon fiber material, and the thickness of the layer of carbon fiber material is greater than that of the layer of metal sheet material. After the metal sheet material and carbon fiber material are coated on the body, the overall cross-section is similar to a tree ring structure. The golf club shaft structure as described in claim 17, wherein the layer of carbon fiber material and the layer of metal sheet material are fully coated on the body. A golf club shaft structure as described in claim 17, wherein when the metal sheet material and the carbon fiber material are stacked in multiple layers, the outermost layer is the carbon fiber material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm. A golf club shaft structure as described in claim 17, wherein when the metal sheet material and the carbon fiber material are stacked in multiple layers, the outermost layer is the metal sheet material, and when the metal sheet material has repeated layers, the thickness of the repeated layers is less than 0.4 mm. A golf club shaft structure as described in any one of claims 17 to 20, wherein the metal sheet material can be selected from one of aluminum, aluminum alloy, copper, steel, titanium, titanium alloy, and magnesium aluminum alloy. A golf club shaft structure as described in claim 17, wherein the body is made of carbon fiber material. A golf club shaft structure as described in claim 17, wherein the body is made of metal.