Golf club head with surface coating

Abstract

The invention relates to a golf club head with a surface coating, which is used for solving the problems of insufficient strength and poor color. Comprising a club head body; the rod head comprises a rod head body and a surface plating layer, the surface plating layer is sequentially provided with a substrate layer and a strengthening layer, the substrate layer is combined on the surface of the rod head body, the strengthening layer is a diamond-like carbon layer, the hardness of the strengthening layer is 1700-2500 HV, and the L value in a Lab color space of the strengthening layer is 44-48.

Description

TECHNICAL FIELD

[0001] The present application relates to a golf club head, in particular, a golf club head with a surface coating. BACKGROUND

[0002] When a golf club head needs to form a dark color, the existing golf club head surface is covered with a layer of coating film by sputtering or evaporation through Physical Vapor Deposition (PVD) by using suitable plating material, so as to have a better appearance. However, the color of the existing coating film is not good and the strength is insufficient, so it is difficult to meet the requirements of product quality.

[0003] Therefore, the existing coating still needs to be improved. SUMMARY

[0004] To solve the above problems, the purpose of the present application is to provide a golf club head with a surface coating, which can improve the color and strength of the club head.

[0005] The directionality or its approximate language described throughout the present application, such as "front", "back", "left", "right", "up (top)", "down (bottom)", "inside", "outside", "side" and the like, mainly refers to the direction of the attached drawings, and each directionality or its approximate language is only used to assist in describing and understanding each embodiment of the present application, and is not used to limit the present application.

[0006] The quantifier "one" or "a" used throughout the present application is only for convenience and provides the general meaning of the scope of the present application; in the present application, it should be interpreted as including one or at least one, and the single concept also includes multiple cases, unless it is obviously intended to mean otherwise.

[0007] The approximate language such as "combine", "combine" or "assemble" described throughout the present application mainly includes the state that the components can be separated without being damaged after being connected, or the components cannot be separated after being connected, and those skilled in the art can select according to the material of the components to be connected or the assembly requirements.

[0008] The golf club head with a surface coating of the present application comprises: a club head body; and a surface coating, which has a substrate layer and a strengthening layer in sequence, the substrate layer is combined with the surface of the club head body, the strengthening layer is a diamond-like carbon layer, the hardness of the strengthening layer is 1700-2500 HV, and the L value in the Lab color space of the strengthening layer is 44-48.

[0009] Therefore, the golf club head with a surface coating of the present invention, by having the surface coating on the surface of the club head body, can further achieve a predetermined Lab value on the surface of the club head body, so that the semi-finished club head has a black glossy appearance, thus achieving a better appearance. In addition, the surface coating gives the club head body good strength and wear resistance, thereby improving its durability.

[0010] The clubhead body has a hardness of 160–250 HV, while the reinforcing layer has a hardness of 2200–2500 HV. This design ensures that the reinforcing layer is less prone to peeling off.

[0011] The clubhead body has a hardness of 238–363 HV, and the reinforcing layer has a hardness of 1750–1850 HV. This design makes the reinforcing layer less prone to peeling off.

[0012] The clubhead body has a hardness of 302–308 HV, and the reinforcing layer has a hardness of 1700–1800 HV. This design makes the reinforcing layer less prone to peeling off.

[0013] The clubhead body is made of soft iron, and the hardness ratio between the clubhead body and the reinforcing layer is 0.064 to 0.115. This creates a better hardness ratio relative to the soft iron material, making the reinforcing layer less prone to peeling off.

[0014] The clubhead body is made of stainless steel, and the hardness ratio between the clubhead body and the reinforcing layer is 0.129 to 0.207. This creates an optimal hardness ratio relative to the stainless steel material, making the reinforcing layer less prone to peeling off.

[0015] The clubhead body is made of titanium alloy, and the hardness ratio between the clubhead body and the reinforcing layer is 0.168 to 0.181. This creates an optimal hardness ratio relative to the titanium alloy material, making the reinforcing layer less prone to peeling off.

[0016] The thickness of the base layer is 0.4–0.7 μm. This allows the base layer to bond tightly to the shaft head body.

[0017] The thickness of the reinforcing layer is 1.2–1.5 μm. This allows the reinforcing layer to have a suitable thickness, thereby improving the wear resistance of the shaft head surface.

[0018] This reinforcing layer does not contain hydrogen. Therefore, it exhibits excellent adhesion. Attached Figure Description

[0019] Figure 1 : A perspective view of an embodiment of the present invention used for iron head; Figure 2 : Figure 1 Enlarged view of part A; Figure 3 : A perspective view of an embodiment of the present invention used for a wooden pole head.

[0020] Explanation of reference numerals in the attached figures: 1: Club head body 2: Surface coating 21: Basal layer 22: Reinforcement layer. Detailed Implementation

[0021] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments of the present invention are described below in detail with reference to the accompanying drawings; in addition, those symbols that are used in different drawings are considered to be the same and their descriptions will be omitted.

[0022] Please refer to Figure 1 , Figure 2 As shown, this is a first embodiment of the golf club head with a surface coating of the present invention, which includes a club head body 1 and a surface coating 2, wherein the surface coating 2 is located on at least a portion of the surface of the club head body 1.

[0023] Please refer to Figure 1 , Figure 3 The clubhead body 1 shown can be a swing head or a putter head. The clubhead body 1 can be made of materials such as stainless steel, carbon steel or titanium alloy to give the clubhead body 1 sufficient structural strength and sufficient corrosion resistance to the surface of the clubhead body 1. When the surface coating 2 is applied to the surface of the clubhead body 1 by chemical deposition or electroplating, the structure of the clubhead body 1 will not be damaged by corrosion, which facilitates subsequent processing.

[0024] The surface coating 2 has a base layer 21, which is bonded to the surface of the clubhead body 1. The base layer 21 can be a chromium (Cr)-containing metal coating, preferably a chromium carbide (CrC) layer. Thus, the base layer 21 can protect the clubhead body 1. In this embodiment, the thickness of the base layer 21 can be 0.4–0.7 μm to ensure a tight bond between the base layer 21 and the clubhead body 1. Furthermore, the base layer 21 can fill in pits or fine lines on the surface of the clubhead body 1, resulting in a smooth surface.

[0025] Furthermore, the clubhead body 1 can be 6×10 -3 ~6×10 -4Under a vacuum of Pa, chromium metal is used as the plating material and argon is used as the reaction gas. A bias voltage of 300-350V is introduced into the argon gas to make the argon gas react with the rod head body 1 for 2400-3600 seconds, thereby forming the base layer 21 on the surface of the rod head body 1.

[0026] Preferably, before forming the base layer 21, the clubhead body 1 can be formed in a 6×10 -3 ~6×10 -4 Under a vacuum of Pa, argon gas is used as the reactant gas, and a bias voltage of 120-200V is applied to the argon gas without any coating material. At this time, the argon gas is excited by glow discharge under the influence of voltage, causing the gas atoms of the argon gas to form positively charged ions and separate negatively charged electrons. The ions and electrons released by the gas atoms of the argon gas will bombard the surface of the rod head body 1. In this way, the surface of the rod head body 1 can be activated first, and the tiny particles on the surface of the rod head body 1 can be removed to enhance the adhesion of the film layer, thereby improving the coating quality.

[0027] The surface coating 2 has a reinforcing layer 22, which can be formed on the base layer 21. The reinforcing layer 22 is a diamond-like carbon (DLC) layer, and has good hardness and wear resistance. Furthermore, the reinforcing layer 22 may include sp... 3 Bonded carbon and sp 2 Preferably, the reinforcing layer 22 can be a hydrogenated diamond-like carbon (DLC) layer or a non-hydrogenated diamond-like carbon (NLC) layer. In this embodiment, the thickness of the reinforcing layer 22 can be 1.2–1.5 μm, and the reinforcing layer 22 is a non-hydrogenated diamond-like carbon layer, thus achieving good adhesion.

[0028] Furthermore, the club head body 1 having the base layer 21 can be made in a 6×10 -3 ~6×10 -4 Under a vacuum of Pa, acetylene is used as the reactant gas, and a bias voltage of 450–500 V is applied to the acetylene, causing it to react with the base layer 21 for 36,000–43,200 seconds to form the reinforcing layer 22. This reinforcing layer 22 can achieve a hardness of 1700–2500 HV. Testing shows that the reinforcing layer 22 can withstand at least 50,000 abrasion cycles without exposing the base layer 21. Furthermore, evaluating the color rendering of the clubhead body 1 using the Lab color space reveals an L value of 44–48 for the surface coating 2, indicating that the clubhead body 1 exhibits a glossy black color.

[0029] It is worth noting that hardness is a material's ability to resist surface deformation and scratches; materials with higher hardness generally have better wear resistance. If the material of the clubhead body 1 has low hardness, it may be easily damaged during use, causing the reinforcing layer 22 to peel off. In this case, a higher hardness reinforcing layer 22 can increase the bonding force between it and the clubhead body 1, preventing the reinforcing layer 22 from peeling off. Conversely, if the material of the clubhead body 1 has high hardness, using a higher hardness reinforcing layer 22 would cause the golf ball head, made of two materials with different hardnesses, to be subjected to stresses that affect each other during impact, making it more susceptible to damage and causing the reinforcing layer 22 to peel off. Therefore, it is preferable to choose a reinforcing layer 22 with lower hardness to reduce the possibility of peeling off. Thus, depending on the material of the clubhead body 1, the reinforcing layer 22 should preferably have an appropriate hardness ratio with the clubhead body 1. For example, when the clubhead body 1 is an iron clubhead and its material is soft iron, the hardness of the clubhead body 1 can be 160-250 HV. In this case, the hardness of the reinforcing layer 22 is preferably 2200-2500 HV, so that the hardness ratio of the clubhead body 1 to the reinforcing layer 22 is 0.064-0.115. Alternatively, when the clubhead body 1 is made of stainless steel, its hardness can be 238-363 HV. In this case, the hardness of the reinforcing layer 22 is preferably 1750-1850 HV, so that the hardness ratio of the clubhead body 1 to the reinforcing layer 22 is 0.129-0.207. Furthermore, when the material of the clubhead body 1 is titanium alloy, the hardness of the clubhead body 1 can be 302 to 308 HV. In this case, the hardness of the reinforcing layer 22 is preferably 1700 to 1800 HV, so that the hardness ratio of the clubhead body 1 to the reinforcing layer 22 is 0.168 to 0.181.

[0030] In summary, the golf club head with a surface coating of the present invention, by having the surface coating on the surface of the club head body, can further achieve a predetermined Lab value on the surface of the club head body, so that the semi-finished club head has a black glossy appearance, thus achieving a better appearance. In addition, the surface coating gives the club head body good strength and wear resistance, thereby improving its durability.

[0031] Although the present invention has been disclosed using the above preferred embodiments, it is not intended to limit the invention. Any modifications and alterations made by those skilled in the art to the above embodiments without departing from the spirit and scope of the invention still fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention includes all changes within the meaning and equivalent scope of the appended claims. Furthermore, when the above embodiments can be combined, the present invention includes any combination of embodiments.

Claims

1. A golf club head with a surface coating, characterized in that, include: The shaft head itself; and A surface coating having a base layer and a reinforcing layer in sequence, the base layer being bonded to the surface of the shaft head body, the reinforcing layer being a diamond-like carbon layer, the hardness of the reinforcing layer being 1700-2500 HV, and the L value of the reinforcing layer in the Lab color space being 44-48.

2. The golf club head with a surface coating as described in claim 1, characterized in that, The hardness of the shaft head body is 160-250 HV, and the hardness of the reinforcing layer is 2200-2500 HV.

3. The golf club head with a surface coating as described in claim 1, characterized in that, The hardness of the clubhead body is 238–363 HV, and the hardness of the reinforcing layer is 1750–1850 HV.

4. The golf club head with a surface coating as described in claim 1, characterized in that, The hardness of the shaft head body is 302-308 HV, and the hardness of the reinforcing layer is 1700-1800 HV.

5. The golf club head with a surface coating as described in claim 1, characterized in that, The clubhead body is made of soft iron, and the hardness ratio of the clubhead body to the reinforcing layer is 0.064 to 0.

115.

6. The golf club head with a surface coating as described in claim 1, characterized in that, The clubhead body is made of stainless steel, and the hardness ratio of the clubhead body to the reinforcing layer is 0.129 to 0.

207.

7. The golf club head with a surface coating as described in claim 1, characterized in that, The clubhead body is made of titanium alloy, and the hardness ratio of the clubhead body to the reinforcing layer is 0.168 to 0.

181.

8. The golf club head with a surface coating as described in claim 1, characterized in that, The thickness of the substrate layer is 0.4–0.7 μm.

9. The golf club head with a surface coating as described in claim 1, characterized in that, The thickness of the reinforcement layer is 1.2–1.5 μm.

10. The golf club head with a surface coating as claimed in claim 1, characterized in that, This reinforcement layer does not contain hydrogen.

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