Golf club head and manufacturing method of the same
First Claim
1. A golf club head including a head shell portion made of a metal material and having an opening portion, and a resin member made of a fiber reinforced resin arranged in the opening portion of said head shell portion, said golf club head having an inner hollow portion in an inner portion thereof,wherein said resin member is constituted by a molded body formed by subjecting a laminated body of plural layers of prepregs having a magnitude covering said opening portion and having different resin percentage contents, to integral molding with said head shell portion in accordance with an internal pressure molding method, andwherein a prepreg having the largest resin percentage content is used in an innermost layer of said laminated body which is closest to said hollow portion.
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Accused Products
Abstract
The invention prevents a crimple from being generated in a resin member. The invention provides a golf club head (1) including a head shell portion (M) made of a metal material and having an opening portion (O1), and a resin member (FR) made of a fiber reinforced resin arranged in the opening portion (O1), and provided with a hollow portion in an inner portion. The resin member (FR) is constituted by a molded body formed by integrally molding a laminated body of plural layers of prepregs having a magnitude covering the opening portion (O1) and having different resin percentage contents in the head shell portion in accordance with an internal pressure molding method. Further, the prepreg having the largest resin percentage content is used in an innermost layer of the laminated body closest to the hollow portion.
70 Citations
7 Claims
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1. A golf club head including a head shell portion made of a metal material and having an opening portion, and a resin member made of a fiber reinforced resin arranged in the opening portion of said head shell portion, said golf club head having an inner hollow portion in an inner portion thereof,
wherein said resin member is constituted by a molded body formed by subjecting a laminated body of plural layers of prepregs having a magnitude covering said opening portion and having different resin percentage contents, to integral molding with said head shell portion in accordance with an internal pressure molding method, and wherein a prepreg having the largest resin percentage content is used in an innermost layer of said laminated body which is closest to said hollow portion.
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5. A golf club head including a head shell portion made of a metal material and having an opening portion, and a resin member made of a fiber reinforced resin arranged in an opening portion of said head shell portion, said golf club head having an inner hollow portion,
wherein said resin member is constituted by a molded body formed by subjecting a laminated body of plural layers of prepregs having a magnitude covering said opening portion and having different resin percentage contents, to integral molding with said head shell portion in accordance with an internal pressure molding method, wherein said laminated body includes an innermost layer closest to said hollow portion, an outermost layer closest to the club head outer surface and an intermediate layer arranged between the innermost and outermost layers, at least one layer of a prepreg having the smallest resin percentage content is used in said intermediate layer, and a layer of a prepreg having a resin percentage content larger than the prepreg having the smallest resin percentage content is used in each of said innermost layer and the outermost layer.
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7. A manufacturing method of a golf club head having a hollow portion inside thereof and including a head shell portion made of a metal material and having an opening portion, and a resin member made of a fiber reinforced resin arranged at the opening portion of said head shell portion, said method comprising:
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a preliminary molding step of producing a head base body by arranging, at the opening portion of said head shell portion, a laminated body constituted by a plurality of prepregs having a magnitude covering said opening portion and having different resin percentage contents wherein a prepreg having the largest resin percentage content is used in an innermost layer closest to said hollow portion, to cover said opening portion with said laminated body; and an internal pressure molding step of integrally molding said laminated body with said head shell portion by heating said head base body in a metal mold and expanding a bladder inserted into said hollow portion.
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Specification