TWI729927B - Golf club head - Google Patents

Abstract

A golf club head includes a head body and a top cover made of carbon fiber thermoplastic composite material (CFRTP). The ball head body includes a main body portion, an inner edge portion connected to the main body portion and surrounding and defining an opening, a receiving portion connected to the inner edge portion and extending downward, and a receiving portion connected to the receiving portion and defining an orientation The thickness of the extending portion of the bonding surface of the opening gradually increases from thin to thick in the direction of the receiving portion. The top cover is fixed on the bonding surface and located in the opening. The top cover has a cover body and a joint part connected to the cover body and fixed on the bonding surface and ground to gradually change in thickness. The thickness of the extension part is gradually changed and the step is formed, so that the thickness of the joint part to be polished is greatly reduced, the polishing efficiency is improved and the situation of poor connection is avoided.

Description

Golf club head

The present invention relates to a golf equipment, in particular to a golf club head.

Referring to Figures 1 and 2, the body of a general golf club head will form a gluing area that is joined to the top cover. The gluing area is usually divided into two structures, one is the step type as shown in Figure 1, and the other is such as The inclined and stepped design shown in FIG. 2 is that the outer edge of the ball head body 11 is concavely folded to form a stepped structure 111, and a flat surface 112 on which the top cover 12 is abutted is generated. In order to ensure the top cover 12 The outer surface can be flush with the ball head body 11, usually the part of the top cover 12 corresponding to the glued area is locally thickened, so when the top cover 12 is glued to the flat surface 112, the thickened outer surface will be more thick than the ball head body 11. The surface of the head body 11 is convex, and the top cover 12 can be made flush with the ball head body 11 by grinding. The inclined surface design is to form an inclined surface 113 on the outer edge of the ball head body 11 for the top cover 12 to abut. In order to correspond to the inclined surface 113 extending, the top cover 12 usually needs to adopt a gradual thickness design, so that the top cover 12 is just flush with the outer surface of the ball head body 11 after being attached to the inclined surface 113.

The above process is suitable for carbon fiber composite materials (Carbon Fiber Reinforced Polymer, referred to as CFRP) with a gradual thickness design, but when using carbon fiber reinforced thermoplastic composite materials (Carbon Fiber Reinforced ThermoPlastic, referred to as CFRTP) with higher strength and lighter weight as the top For the material of the cover 12, because the CFRTP has the characteristics of uniform thickness, the stepped design will cause the surface of the top cover 12 to easily fail to be flush with the outer surface of the ball head body 11. The top cover 12 will protrude beyond the inclined surface 113 of the gluing area as shown by the imaginary line in FIG. 2. As a result, the top cover 12 needs a lot of grinding to make the surface level and smooth. Material grinding will also cause material waste and increase costs invisibly.

Therefore, the object of the present invention is to provide a golf club head that enables the top cover made of CFRTP material to be connected to the head body.

Therefore, the golf club head of the present invention includes a head body and a top cover provided on the head body. The ball head body includes a main body portion defining an inner space, an inner edge portion connected to the main body portion and surrounding an opening connecting the inner space, and an inner edge portion connected to the inner edge portion and extending downward to be located in the inner portion The receiving portion in the space, and an extension portion connecting the receiving portion and defining a bonding surface facing the opening, and the thickness of the extension portion gradually increases from thin to thick toward the receiving portion.

The top cover is fixed on the bonding surface and located in the opening, and is made of carbon fiber thermoplastic composite material. The top cover has a cover body portion, and a cover body connected to the cover body portion and fixed on the bonding surface and The thickness of the bonded portion that is ground and gradually decreases in thickness is gradually reduced from thick to thin in the direction of the receiving portion, and the outer surface of the bonded portion is flush with the outer surface of the main body.

The effect of the present invention is that the thickness of the extension part is gradually changed and the step is formed, so that the thickness of the bonding part that needs to be polished is greatly reduced, the polishing efficiency is improved, and the situation of poor connection is avoided.

Referring to FIGS. 3 and 4, an embodiment of the golf club head of the present invention includes a head body 2 and a top cover 3 fixed on the head body 2 and partially ground. The ball head body 2 includes a main body 21 defining an inner space 211, an inner edge 22 connected to the main body 21 and surrounding an opening 221 connected to the inner space 211, and an inner edge 22 connected to the inner space 211. The receiving portion 23 extending downward and located in the internal space 211, and an extension portion 24 connected to the receiving portion 23 and defining a bonding surface 241 facing the opening 221 and located in the internal space 211. The thickness of the extension portion 24 gradually increases from thin to thick in the direction of the receiving portion 23, and the thickening range is within 0.35 mm. The receiving portion 23 and the extending portion 24 form a step-like structure with a gradually changing thickness.

The top cover 3 is fixed on the bonding surface 241 by gluing or other methods, and is located in the opening 221 and closes the opening 221. The top cover 3 is made of carbon fiber thermoplastic composite material (Carbon Fiber Reinforced ThermoPlastic, CFRTP for short). The top cover 3 has a cover body portion 31 with a thickness of 0.55mm to 0.75mm, and a connection to the cover body portion 31 The bonding portion 32 is fixed on the bonding surface 241 and is ground to have a gradually changing thickness. The thickness of the connecting portion 32 gradually decreases from thick to thin in the direction of the receiving portion 23, and the preferred thickness ranges from 0.4 mm to 0.2 mm. The grinding amount of the connecting portion 32 is about 0.15 mm to 0.55 mm, so that the outer surface of the connecting portion 32 is flush with the outer surface of the main body 21.

In summary, through the structural design of the present invention, the top cover 3, which is made of CFRTP and has a uniform thickness, can be flush and smooth with the surface of the ball head body 2 with a small amount of grinding, thereby improving grinding Efficiency, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

2: Ball head body

21: Main body

211: Internal Space

22: Inner edge

221: open

23: Acceptance Department

24: Extension

241: Fitting surface

3: top cover

31: Lid body

32: Joint

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is an incomplete side cross-sectional view illustrating a conventional golf club head with a stepped design; Figure 2 is an incomplete side cross-sectional view illustrating a conventional golf club head with a sloped design; Figure 3 is an incomplete side cross-sectional view illustrating an embodiment of the golf club head of the present invention; and FIG. 4 is a partial enlarged view illustrating the enlarged state of the part shown by the imaginary coil in FIG. 3.

2: Ball head body

21: Main body

211: Internal Space

22: Inner edge

23: Acceptance Department

24: Extension

241: Fitting surface

3: top cover

31: Lid body

32: Joint

Claims (1)

A golf club head includes: a head body, including a main body portion defining an inner space, an inner edge portion connected to the main body portion and surrounding an opening connecting the inner space, and an inner edge portion connected to the inner edge Portion and extending downwards and a receiving portion located in the internal space, and an extension portion connected to the receiving portion and defining a bonding surface facing the opening, the thickness of the extension portion is thinner toward the receiving portion The thickness gradually increases, and the thickness increase range is within 0.35mm; and a top cover, fixed on the bonding surface and located in the opening, and made of carbon fiber thermoplastic composite material, the top cover having a cover body Part, and a joint part connected to the cover body part and fixed on the bonding surface and polished to have a gradually changing thickness. The thickness of the cover body part is 0.55mm to 0.75mm, and the thickness of the joint part faces the receiving part The direction of the joint is gradually reduced from thick to thin, and the outer surface of the joint is flush with the outer surface of the main body, and the thickness of the joint is 0.4mm to 0.2mm.

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