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, and provided with an inner hollow portion in an inner portion, wherein said resin member is constituted by a molded body formed by integrally molding a laminated body of plural layers of prepregs having a magnitude covering said opening portion and having different resin percentage contents, in said head shell portion in accordance with an internal pressure molding method, and wherein the prepreg having the largest resin percentage content is used in an innermost layer of said laminated body closest to said hollow portion.
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0 Petitions
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.
56 Citations
6 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, and provided with an inner hollow portion in an inner portion,
wherein said resin member is constituted by a molded body formed by integrally molding a laminated body of plural layers of prepregs having a magnitude covering said opening portion and having different resin percentage contents, in said head shell portion in accordance with an internal pressure molding method, and wherein the prepreg having the largest resin percentage content is used in an innermost layer of said laminated body 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, and provided with an inner hollow portion,
wherein said resin member is constituted by a molded body formed by integrally molding a laminated body of plural layers of prepregs having a magnitude covering said opening portion and having different resin percentage contents, in said head shell portion in accordance with an internal pressure molding method, wherein said laminated body employs at least one layer of the prepreg having the smallest resin percentage content, at least in an intermediate layer arranged between the innermost layer closest to said hollow portion and the outermost layer closest to the head outer surface, and wherein the prepreg in which said resin percentage content is larger than the prepreg having the smallest resin percentage content is used in said innermost layer and the outermost layer.
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6. A manufacturing method of 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, and provided with a hollow portion in an inner portion, comprising:
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a preliminary molding step of molding a head base body by arranging a laminated body constituted by a plurality of prepregs having a magnitude covering said opening portion and having different resin percentage contents and employing the prepreg having the largest resin percentage content in an innermost layer closest to said hollow portion; and
an internal pressure molding step of integrally molding said laminated body in said head shell portion by heating said head base body in a metal mold and expanding a bladder at said hollow portion.
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Specification