TWI729847B - Crown cover of golf head and golf head having the same - Google Patents

Abstract

A crown cover of golf head and a golf head having the same are provided. The crown cover is configured to be disposed on a non-metallic head body of the golf head, in which the non-metallic head body has a hitting surface. The crown cover includes a cover body and plural rib structures. The cover body has an outer surface and an inner surface. The rib structures are disposed on the inner surface. Each of the rib structures has a height, and the heights vary with varied distances between the respective rib structures and the hitting surface.

Description

Golf head cap and golf head

The present disclosure relates to a golf head cover and a golf head, and more particularly to a lightweight golf head cover with shock absorption and cushioning functions, and a golf head using the golf head cover.

Golf has become one of the common leisure sports at present, and in response to different swing functions and effects, the design of golf heads tends to be diversified. In order to change the center of gravity and the degree of freedom of the weight of the golf head, the related industry currently uses carbon fiber composite materials to make some parts of the golf head.

However, although the parts of the golf head made of carbon fiber composite materials have the advantages of thin thickness and light weight, they are also susceptible to deformation due to external forces or have insufficient strength.

Therefore, one purpose of the present disclosure is to provide a golf head cover and a golf head, through which the rib structure design of the golf head cover can reduce the overall thickness and improve the overall structural strength.

According to the above-mentioned object of the present disclosure, a golf head cap is provided. The top cover of the golf head is configured to be installed on the head body of the golf head, wherein the head body has a ball striking surface. The golf head top cover includes a non-metal top cover body and several rib structures. The non-metal top cover body has opposite outer surfaces and inner surfaces. The rib structure is arranged on the inner surface, and each rib structure has a height, and these heights change with the distance between the rib structure and the ball striking surface.

According to an embodiment of the present disclosure, the height of the rib structure closer to the ball striking surface is smaller than the height of the rib structure farther from the ball striking surface.

According to an embodiment of the present disclosure, the surface of each rib structure close to the ball striking surface has a slope, wherein the surface slope of the rib structure close to the ball striking surface is gentler than the surface slope of the rib structure far away from the ball striking surface.

According to an embodiment of the present disclosure, the above-mentioned non-metallic top cover body is a shell structure made up of an appearance layer and a plurality of unidirectional fiber layers.

According to an embodiment of the present disclosure, the above-mentioned unidirectional fiber layer includes a plurality of first direction fiber layers and a plurality of second direction fiber layers, wherein the fiber extension direction of the first direction fiber layer is perpendicular to the normal direction of the ball striking surface , The fiber extension direction of the second-direction fiber layer is parallel to the normal direction of the ball striking surface, and one of the first-direction fiber layers is adjacent to the appearance layer.

According to an embodiment of the present disclosure, the above-mentioned non-metallic top cover body is a shell structure made up of an appearance layer, at least one metal sheet structure, and a plurality of unidirectional fiber layers, wherein the metal sheet structure is arranged adjacent to each other. Between the unidirectional fiber layers.

According to an embodiment of the present disclosure, the above-mentioned non-metal top cover body is a shell structure made up of an appearance layer, at least one metal sheet structure, and a plurality of unidirectional fiber layers, wherein the metal sheet structure is disposed on the appearance layer And between the unidirectional fiber layers adjacent to the appearance layer, and a part of the metal sheet structure exposes the appearance layer.

According to an embodiment of the present disclosure, the above-mentioned metal sheet structure is located at a part of the non-metal top cover body close to the ball striking surface, and the inner surface of the part of the non-metal top cover body is not provided with a rib structure.

According to an embodiment of the present disclosure, the above-mentioned rib structure is formed by two unidirectional fiber layers closest to the inner surface of the non-metallic top cover body.

According to the above objective of the present disclosure, a golf head is proposed. The golf head includes a head body and the aforementioned golf head top cover. The golf head top cover is arranged on the golf head body.

It can be seen from the above that the height and shape of the rib structure of the golf head cover of the present disclosure vary with the distance from the ball hitting surface, so that the thickness of the golf head cover can be thinned and its strength can be improved at the same time. The golf head top cover can withstand different hitting forces and can provide deformation resilience. On the other hand, a metal sheet structure can also be added to the inside of the golf head cover to reinforce the structural strength of the overall non-metallic top cover body together with the rib structure, so as to make the golf head cover thinner and produce a metallic Batting audio.

Please refer to FIG. 1 first, which is a schematic diagram illustrating a structure of a golf head according to an embodiment of the present disclosure. The golf head 100 of this embodiment mainly includes a head body 210 and a golf head cover 300. The ball head body 210 is a hollow shell, and the top of the ball head body 210 has an opening 211 communicating with its internal space. Wherein, one side of the ball head body 210 has a ball striking surface 212. The golf head top cover 300 is provided on the top of the head body 210 and covers the opening 211. In some embodiments, the ball head body 210 and the ball striking surface 212 of the present disclosure may be titanium metal or stainless steel.

Please refer to FIG. 2 and FIG. 3 together, where FIG. 2 is a bottom view of a golf head cover according to an embodiment of the present disclosure, and FIG. 3 is a bottom view of a golf head cover according to an embodiment of the present disclosure A partial cutaway view of the cover. In this embodiment, the golf head top cover 300 includes a non-metal top cover body 310 and a plurality of rib structures 320. The non-metal cover body 310 has an outer surface 311 and an inner surface 312 opposite to the outer surface 311. Wherein, the inner surface 312 is the surface facing the inner space of the golf head body 210 when the golf head cover 300 is placed on the golf head body 210 as shown in FIG. 1. The rib structure 320 is disposed on the inner surface 312 of the non-metal top cover body 310.

In this embodiment, each of the rib structures 320 has a height, and these heights vary with the distance between the rib structure 320 and the ball striking surface 212. As shown in FIG. 2, the edge 313 of the non-metal top cover body 310 is the side closest to the ball striking surface 212. Taking FIG. 3 as an example, the rib structure 320 mainly includes a rib structure 321, a rib structure 322, and a rib structure 323. The rib structure 321 is closer to the ball hitting surface 212 (that is, the edge portion of the non-metal top cover body 310). 313), the rib structure 323 is far away from the ball striking surface 212, and the rib structure 322 is located between the rib structure 321 and the rib structure 323. The height H1 of the rib structure 321 closer to the ball striking surface 212 is smaller than the height H3 of the rib structure 323 farther from the ball striking surface 212. In a specific example, the range of the height H1, the height H2, and the height H3 is from 0.2 mm to 0.5 mm. In one embodiment, the height H2 of the rib structure 322 located between the rib structure 321 and the rib structure 323 may be between the height H1 and the height H3. In other embodiments, the height H2 of the rib structure 322 can also be designed to be equal to the height H1 or equal to the height H3. Thereby, through the way that the height of the rib structure 320 changes gradually with the distance from the ball striking surface 212, the strength of the overall golf head cover 300 can be changed, so that the head cover 300 can be reduced in thickness. Can withstand different hitting powers. In order to test the strength of the golf head cover 300 of this embodiment, after the golf head cover 300 is mounted on the head body 210, the ball hitting surface 212 of the head body 210 can be shot at a speed of 55 m/s. After the test of 3000 rounds, the golf head cover 300 can still pass the flaw detection test. This means that the golf head cover 300 has the advantages of thin thickness and high strength.

For clarification, FIG. 3 uses the rib structure 321, the rib structure 322, and the rib structure 323 to distinguish the rib structures at different distances from the ball striking surface 212, which is not intended to limit the disclosure. In some embodiments, the number, shape, arrangement pitch or height of the rib structures 320 can be changed according to requirements.

Please refer to FIG. 2 again. In this embodiment, the rib structures 320 are arranged in a honeycomb shape, and there is a distance between the rib structures 320 and the edge 313 of the non-metal top cover body 310. In other embodiments, the rib structure 320 can also be formed in other grid shapes. Please refer to FIG. 3 again. The surface of each rib structure 320 close to the ball striking surface 212 has a different slope. The gradient design of the rib structure 320 can mainly provide that the golf head cover 300 can disperse the external force and generate it when the golf head cover 300 is impacted by an external force. The power of rebound. In one embodiment, the slope of the rib structure (such as rib structure 321) closer to the ball striking surface 212 is gentler than the slope of the rib structure (such as rib structures 322 and 323) farther from the ball striking surface 212. Thereby, when the golf head cover 300 is squeezed and deformed by an external force, it can rebound quickly.

Please refer to FIGS. 2 to 4 at the same time. FIG. 4 is an exploded view of the material structure of a golf head top cover according to an embodiment of the present disclosure. In this embodiment, the non-metallic top cover body 310 is a laminated structure made up of the appearance layer 310a and a plurality of unidirectional fiber layers (for example, the first direction fiber layer 310b and the second direction fiber layer 310c), or Use such as polypropylene (PP), polyvinyl chloride (PVC), polycarbonate (PC), polyamide resin (PA), polyether ether ketone (PEEK), thermoplastic polyimide (TPI), polyphenylene sulfide A non-metallic top cover body 310 made of thermoplastic fiber reinforced composite materials such as ether (PPS). In a specific forming method, the appearance layer 310a may be a carbon fiber prepreg woven layer, and the fiber direction of the first direction fiber layer 310b is a 90-degree direction carbon fiber prepreg layer whose extending direction is perpendicular to the normal direction of the ball striking surface 212 The fiber direction of the second-direction fiber layer 310c is the carbon fiber prepreg layer in the 0-degree direction that extends parallel to the normal direction of the ball striking surface 212. Wherein, the first direction fiber layer 310b and the second direction fiber layer 310c are stacked alternately, and one of the first direction fiber layer 310b is adjacent to the appearance layer 310a. For clarification, the normal direction of the ball striking surface 212 refers to the extending direction perpendicular to the normal of the ball striking surface 212. In other examples, the normal direction may also refer to the extension direction of an imaginary line perpendicular to the ball striking surface 212 and passing through the center of gravity of the overall golf head 100.

After the appearance layer 310a, the first direction fiber layer 310b, and the second direction fiber layer 310c are stacked to form a material structure, they can be pressed into a mold and heated to form an integrated structure. Wherein, the mold has a groove corresponding to the rib structure 320, so when the material structure is hot pressed, the rib structure 320 can be formed on the inner surface 312 of the non-metal top cover body 310 at the same time. Thereby, the golf head top cover 300 can be formed into a structure with a thin thickness, a light weight, and a high structural strength. In an embodiment, the rib structure 320 is formed by two unidirectional fiber layers closest to the inner surface 312 of the non-metallic top cover body 310. In some examples, during the hot pressing of the material structure, the mold can be preheated to 35 degrees and then heated to 140 degrees for 30 minutes.

In this disclosure, the golf head top cover can also have different structural designs. Please refer to FIG. 5, which is a partial cross-sectional view of a golf head top cover according to another embodiment of the present disclosure. The golf head top cover 400 of the embodiment shown in FIG. 5 also includes a non-metal top cover body 410 and a plurality of rib structures 420. The structure of the non-metal top cover body 410 shown in FIG. 5 is substantially the same as the structure of the non-metal top cover body 310 shown in FIGS. 2 and 3, except that the non-metal top cover body 410 shown in FIG. 5 further includes Metal sheet structure 430. In this embodiment, the metal sheet structure 430 can be mainly used to reinforce the structural strength of the non-metal top cover body 410 so as to make the non-metal top cover body 410 thinner. In some examples, the metal sheet structure 430 may be a sheet body or a mesh body with a grid structure may be formed by etching. As shown in FIG. 5, the non-metal top cover body 410 also has an outer surface 411 and an inner surface 412 opposite to the outer surface 411. Wherein, the rib structure 420 is disposed on the inner surface 412 of the non-metal top cover body 410, and the design principle of the rib structure 420 is the same as the design principle of the rib structure 320 in the foregoing embodiment, so it will not be repeated here.

Please also refer to FIG. 6, which is an exploded view of the material structure of a golf head cover according to another embodiment of the present disclosure. In this embodiment, the non-metal top cover body 410 is composed of an appearance layer 410a, a plurality of unidirectional fiber layers (for example, a first direction fiber layer 410b and a second direction fiber layer 410c), and at least one metal sheet structure 430. Into the shell structure. In a specific embodiment, the appearance layer 410a may be a carbon fiber prepreg woven layer, and the first direction fiber layer 410b is a 90-degree carbon fiber prepreg with an extending direction perpendicular to the normal direction of the ball striking surface 212 shown in FIG. The second direction fiber layer 410c is a 0 degree carbon fiber prepreg layer that extends parallel to the normal direction of the ball striking surface 212, and one of the first direction fiber layers 410b is adjacent to the appearance layer 410a . Wherein, the first-direction fiber layer 410b and the second-direction fiber layer 410c are stacked alternately, and the location and number of the metal sheet structure 430 can be set according to requirements. In the example of FIG. 6, the number of sheet metal structures 430 is two, and they are respectively arranged below the first-direction fiber layer 410b of the first layer and above the first-direction fiber layer 410b of the last layer.

After the appearance layer 410a, the first direction fiber layer 410b, the second direction fiber layer 410c, and the metal sheet structure 430 are stacked on each other to form a material structure, they can be pressed into a mold and heated to form an integrated structure. Wherein, the mold has a groove corresponding to the rib structure 420, so when the material structure is hot pressed, the rib structure 420 can be formed on the inner surface 412 of the non-metallic top cover body 410 at the same time. Thereby, the metal sheet structure 430 can be used as an internal reinforcement structure of the non-metal top cover body 410, so the overall thickness of the non-metal top cover body 410 can be made thinner, for example, the thickness can be as thin as 0.35 mm. In one embodiment, as shown in FIGS. 5 and 6, the metal sheet structure 430 is located in a part of the non-metal cover body 410 close to the hitting surface, and the inner surface 412 corresponding to this part is not provided with the rib structure 420 . In other words, the portion of the non-metal cover body 410 close to the ball striking surface can be used as a reinforcement structure by the sheet metal structure 430, and the remaining portion can be reinforced by the rib structure 420. In some examples, the mesh shape of the metal sheet structure 430 can be the same as the shape of the rib structure 420 to achieve the purpose of structural connection and also to reduce the shock wave generated when the ball is hit by the striking surface. In order to test the strength of the golf head cover 400 of this embodiment, the golf head cover 400 can be mounted on a general head body, and then the ball hitting surface of the head body can be tested at a ball speed of 55m/s. After 3000 After the firing test, the golf head cover 400 can still pass the flaw detection test. This means that the golf head cover 400 has the advantages of thin thickness and high strength.

In other embodiments, the metal sheet structure 430 may also be disposed between the appearance layer 410a and the first direction fiber layer 410b adjacent to the appearance layer 410a. When a woven fiber or a shell with a hollow structure is used as the appearance layer 410a, the metal sheet structure 430 can expose the appearance layer 410a, so that the appearance layer 410a produces a composite visual effect with metal and woven texture. In addition, by changing the position and quantity of the metal sheet structure 430, in addition to changing the appearance of the golf head cover 400, the sound performance of the shot can also be changed.

It can be seen from the above embodiments of the present disclosure that the height and shape of the rib structure of the golf head top cover of the present disclosure vary with the distance from the ball hitting surface, so that the thickness of the golf head top cover can be thinned and increased at the same time. Its strength, in turn, enables the golf head cover to withstand different hitting forces and provide resilience. On the other hand, a metal sheet structure can also be added to the inside of the golf head cover to reinforce the structural strength of the overall non-metal top cover body together with the rib structure, so that the golf head cover can be thinner, and the impact audio can be improved.

100: golf head

210: Ball head body

211: open

212: batting surface

300: Golf head cover

310: Non-metallic top cover body

310a: Appearance layer

310b: First direction fiber layer

310c: second direction fiber layer

311: Outer surface

312: inner surface

313: Edge

320: rib structure

321: convex rib structure

322: convex rib structure

323: convex rib structure

400: Golf head cover

410: Non-metallic top cover body

410a: Appearance layer

410b: first direction fiber layer

410c: second direction fiber layer

411: Outer Surface

412: inner surface

420: convex rib structure

430: sheet metal structure

H1: height

H2: height

H3: height

For a more complete understanding of the embodiments and their advantages, reference is now made to the following description in conjunction with the accompanying drawings, in which: FIG. 1 is a schematic diagram showing the structure of a golf head according to an embodiment of the present disclosure; Figure 2 is a bottom view of a golf head cover according to an embodiment of the present disclosure; FIG. 3 is a partial cross-sectional view of a golf head top cover according to an embodiment of the present disclosure; 4 is an exploded view showing the material structure of a golf head top cover according to an embodiment of the present disclosure; FIG. 5 is a partial cross-sectional view of a golf head cap according to another embodiment of the present disclosure; and 6 is an exploded view of the material structure of a golf head cover according to another embodiment of the present disclosure;

Domestic deposit information (please note in the order of deposit institution, date and number) no Foreign hosting information (please note in the order of hosting country, institution, date, and number) no

310: Non-metallic top cover body

311: Outer surface

312: inner surface

320: rib structure

321: convex rib structure

322: convex rib structure

323: convex rib structure

H1: height

H2: height

H3: height

Claims (8)

A golf head top cover is configured to be installed on a head body of a golf head, wherein the head body has a hitting surface, and the golf head top cover includes: a non-metal top cover body with opposite An outer surface and an inner surface, wherein the non-metallic top cover body is a shell structure made up of an appearance layer and a plurality of unidirectional fiber layers, and the unidirectional fiber layers include a plurality of first direction fiber layers And a plurality of second direction fiber layers, wherein the fiber extension direction of the first direction fiber layers is perpendicular to a normal direction of the ball striking surface, and the fiber extension direction of the second direction fiber layers is parallel to the ball striking surface In the normal direction, one of the first-direction fiber layers is adjacent to the appearance layer; a plurality of rib structures are provided on the inner surface, and each of the rib structures has a height, The heights vary with the distance between the rib structures and the ball striking surface. The golf head cap according to claim 1, wherein the heights of the rib structures closer to the ball striking surface are lower than the heights of the rib structures farther from the ball striking surface. The golf head cover according to claim 1, wherein each of the rib structures close to the ball striking surface has a slope, and the slopes of the rib structures close to the ball striking surface are farther away The slopes of the rib structures of the hitting surface are gentle. The golf head cap according to claim 1, wherein the non-metal cap body further includes at least one sheet metal structure, wherein the sheet metal structure is disposed between the adjacent unidirectional fiber layers. The golf head top cover of claim 1, wherein the non-metal top cover body further comprises at least one sheet metal structure, wherein the sheet metal structure is disposed between the appearance layer and the unidirectional fiber layer adjacent to the appearance layer And a part of the metal sheet structure exposes the appearance layer. The golf head top cover of claim 4 or claim 5, wherein the metal sheet structure is located in a part of the non-metal top cover body close to the ball striking surface, and the inner surface of the part of the non-metal top cover body These rib structures are not provided. The golf head cover according to any one of claims 1 to 5, wherein the rib structures are formed by the two unidirectional fiber layers closest to the inner surface of the non-metallic cover body . A golf head includes: a head body; and the golf head top cover according to any one of claim 1 to claim 7, which is arranged on the head body.

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