US20070117653A1 - Golf club head - Google Patents
Golf club head Download PDFInfo
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- US20070117653A1 US20070117653A1 US10/581,101 US58110104A US2007117653A1 US 20070117653 A1 US20070117653 A1 US 20070117653A1 US 58110104 A US58110104 A US 58110104A US 2007117653 A1 US2007117653 A1 US 2007117653A1
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- Prior art keywords
- section
- golf club
- club head
- face
- fiber member
- Prior art date
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/047—Heads iron-type
- A63B53/0475—Heads iron-type with one or more enclosed cavities
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/047—Heads iron-type
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B2209/023—Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
- A63B53/042—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head
- A63B53/0425—Heads having an impact surface provided by a face insert the face insert consisting of a material different from that of the head the face insert comprising two or more different materials
Definitions
- the present invention relates to a golf club head, and more specifically, relates to an iron-type golf club head composed of a metallic head body and a reinforced fiber member.
- Such golf club heads are considered to be capable of providing a larger launch angle and a longer carry of ball with their low center of gravity structure.
- the deformation of the metallic striking face part at the time of striking the ball is very small. This small deformation can produce a deformation, in the thickness direction, of the fiber reinforced plastic layer therebehind, which produces a repulsive force against the ball.
- the repulsive force produced from the deformation of the layer alone is small, and the carry of the ball cannot be increased much.
- the present invention is made in the light of the above problem, and an object of the present invention is to provide a golf club head capable of providing a longer carry of a ball than ever before, by causing a larger repulsive force to act on the ball, which force is produced using deformation of a metallic striking face part at the time when the golf club head strikes the ball.
- the golf club head of the present invention includes: a metallic frame-shaped iron head body including a heel section, a toe section, an upper edge section connecting the superior ends of the heel section and of the toe section, and a sole section; and a metallic thin-walled face section, having a high coefficient of restitution, provided on a front face of the head body.
- the head body includes a rear wall section, spaced apart from the face section and extending upward from a rear end of the sole section.
- a reinforced fiber member is placed in an area surrounded by the face section, the sole section, and the rear wall section. The reinforced fiber member abuts on a back of the face section to form a closed hollow void section. A part of a back of the reinforced fiber member is supported on the rear wall section.
- the face section When the golf club head strikes a golf ball, the face section is deformed to bulge backward and to compress the closed void section of the reinforced fiber member therebehind. With the compression force, the closed void section is elastically deformed. Elastic restoring forces of the face plate and of the void section are combined to act on the golf ball as a repulsive force, thus increasing the carry of the golf ball.
- a part of the reinforced fiber member is shaped in a plate and brought in close contact with the back of the face section.
- the plate-shaped part of the reinforced fiber member and the other part thereof form an oblong sealed closed void section.
- the rear wall section is formed of a chevron-shaped extension section protruding upward from the rear end of the sole section and a belt-shaped extension section diagonally connecting the top of the chevron-shaped extension section and the upper end of the toe section.
- FIG. 1 is a front view of an iron golf club head according to a preferred embodiment of the present invention.
- FIG. 2 is a rear view of the iron golf club head shown in FIG. 1 .
- FIG. 3 is a sectional view taken along a line III-III of FIG. 2 .
- FIG. 4 is a rear view showing a second embodiment of the present invention.
- FIG. 5 is a sectional view taken along a line V-V of FIG. 3 .
- FIGS. 1 to 3 show an iron golf club head according to a preferred embodiment of the present invention.
- a head body 10 of the club head is formed in a frame-shape composed of a hosel section 1 , into which a shaft (not shown) is inserted, a heel section 2 under the hosel section 1 , a circular arc-shaped toe section 3 , a belt-shaped upper edge section 4 connecting the upper ends of the heel section 2 and of the toe section 3 , and a sole 5 connecting the lower ends of the heel section 2 and of the toe section 3 .
- a chevron-shaped extension section 6 and a belt-shaped section 7 are provided on the back side of the head body 10 .
- the chevron-shaped extension section 6 protrudes upward from the rear edge of the sole section 5 substantially at a right angle thereto.
- the belt-shaped extension section 7 connects the top of the chevron-shaped extension section 6 and the upper end of the toe section 3 .
- a spindle-shaped gap section 8 is formed, which increases in diameter toward the heel section.
- a substantially semicircular gap section 9 is formed in an area surrounded by both extension sections 6 and 7 , and toe section 3 of the frame-shaped head body 10 .
- the frame-shaped head body 10 including the aforementioned chevron-shaped and belt-shaped extension sections 6 and 7 are molded from stainless steel.
- the peripheral edge part of a face plate 11 is integrally fixed by press fitting, welding, adhesion, or the like.
- the face plate 11 is formed of a titanium alloy with a high coefficient of restitution.
- the face plate 11 is 3 to 4 mm thick in the peripheral edge part and 1.0 to 2.5 mm thick in the striking face part except for the peripheral edge part.
- a fiber reinforced resin plate 12 is integrally bonded to the back of the striking face part of the face plate 11 bonded.
- the thickness of the fiber reinforced resin plate 12 is larger than that of the striking face part.
- the face plate 11 includes a number of lateral grooves with predetermined width and depth in the striking face part as publicly known.
- a sheet-shaped fiber reinforced plastic (FRP) member 13 covers an inner surface of the sole section 5 of the frame-shaped head body 10 and stands substantially at a right angle on the rear end of the sole section 5 to extend entirely across the heel section 2 , the toe section 3 , and the upper edge section 4 of the frame-shaped head body 10 .
- Peripheral edge part of the fiber reinforced plastic member 13 is tightly joined to the peripheral edge part of the fiber reinforced resin plate 12 , which is attached to the back of the faceplate 11 . Accordingly, a sealed hollow void section 14 is formed between the fiber reinforced plastic member 13 and the fiber reinforced resin plate 12 , which is bonded to the back of the face plate 11 .
- the void section 14 has a substantially triangular shape section as shown in FIG. 3 , when vertically cut in a front to rear direction at the center of the head body.
- a triangular recess is formed, and a weight plate 15 composed of a tungsten plate is buried in the recess.
- the iron golf club head of the present invention is structured as described above, when the face plate 11 strikes a golf ball, the impact thereof causes the face plate 11 to bulge backward in the center part except the peripheral edge part supported by the frame-shaped head body 10 .
- the deformation of the face plate 11 is comparatively large.
- the face plate 11 bulging backward applies a force to compress the closed void section 14 , which is formed between the face plate 11 and the fiber reinforced plastic member 13 therebehind.
- part of the fiber reinforced plastic member 13 which is not in contact with the head body 10 specifically, portions of the back of the fiber reinforced plastic member 13 corresponding to the spindle-shaped gap section 8 and to the semicircular gap section 9 , where the chevron-shaped and belt-shaped extension sections 6 and 7 are not located, are microscopically deformed to swell outward.
- the elastic restoring force of the face plate 11 generated by such deformation and the elastic restoring force of the fiber reinforced plastic member 13 deformed to swell outward are combined to act on the golf ball as a repulsive force.
- the carry of the golf ball thus provided can be therefore larger than the carry provided by the conventional golf club head using only elastic deformation of the face plate.
- the golf club head of Comparative Example 1 was made solid by filling a carbon fiber reinforced resin member between the aforementioned face plate 11 , and the chevron-shaped and belt-shaped extension sections 6 and 7 .
- the golf club head of Comparative Example 2 was the same as the golf club head of the above embodiment except that the fiber reinforced plastic member 13 is removed.
- the striking face part of the face plate was composed of a titanium face of 1.5 mm thickness and of a carbon fiber reinforced resin plate of 2 mm thickness bonded to the back of the titanium face.
- the golf club head of the present invention had a lower center of gravity and a higher coefficient of restitution than those of the golf club heads of Comparative Examples 1 and 2.
- the launch angle of the golf club head according to the present invention was larger than those of Comparative examples 1 and 2, and the carry of the golf club head according to the present invention was much larger than those of Comparative Examples 1 and 2.
- FIGS. 4 and 5 show an iron golf club head according to a second embodiment of the present invention. The following description is given of differences of the golf club head of this embodiment from the golf club head of the first embodiment.
- the sole section 5 is formed so that the rear part thereof is approximately twice thicker than the front part thereof.
- a rear center part 16 of the sole section 5 is substantially chevron-shaped and is swelled out as shown in FIG. 4 .
- a first metallic plate material 17 is attached so as to extend upward.
- a triangular second metallic plate material 18 is attached to a lower surface of the belt-shaped upper edge section 4 , which connects the upper ends of the heel section 2 and of the toe section 3 , so as to be pendent downward.
- a substantially V-shaped gap section is thus demarcated between the plates 17 and 18 .
- a thick sheet-shaped fiber reinforced resin layer 19 a is placed in close contact with the back of the face plate 11
- another sheet-shaped fiber reinforced resin layer 19 b of a medium-thickness, which is thinner than the fiber resin layer 19 a is placed in close contact with inner surfaces of the first metallic plate 17 and of the second metallic plate 18 .
- a thin fiber reinforced resin layer 19 c is integrally joined to the peripheral edges of the fiber reinforced resin layers 19 a and 19 b , thus forming a closed hollow void section 14 a.
- the peripheral part which demarcates the hollow void section 14 a is formed to be thin. Accordingly, when the face plate 11 strikes a golf ball and bulges backward, the hollow void section 14 a is easily deformed. The void section 14 a is therefore greatly deformed, thus producing a larger elastic restoring force.
- the reinforced fibers can be glass fibers, aramid fibers and the like, in addition to carbon fibers.
- the face section thereof is deformed to bulge backward and to compress the closed void section therebehind.
- the elastic restoring forces of the face plate and the compressed void section are combined to act on the golf ball as a repulsive force, thus increasing the carry of the golf ball.
Abstract
A metallic frame-shaped iron head body is composed of a heel section, a toe section, an upper edge section connecting superior ends of the heel section and of the toe section, and a sole section. On a front face of the head body, a metallic thin-walled face section having a high coefficient of restitution is provided. The head body includes rear wall sections spaced apart from the face section and extending upward from a rear end of the sole section. A reinforced fiber member is placed in an area surrounded by the face section, the sole section, and the rear wall sections. This reinforced fiber member abuts on a back of the face section to form a closed hollow void section, and apart of a back of the reinforced fiber member is supported on the rear wall sections.
Description
- This application is based upon and claims the benefit of priority from prior Japanese Patent Application No. 2003-415114, filed on Dec. 12, 2003; the entire contents of which are incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to a golf club head, and more specifically, relates to an iron-type golf club head composed of a metallic head body and a reinforced fiber member.
- 2. Description of the Related Art
- In publicly-known conventional iron-type golf club heads each composed of a metallic head body and a reinforced fiber member, a metallic striking face part is formed to be thin-walled, and a thick-walled fiber reinforced plastic layer is attached to or filled in the back of the striking face part as shown in Japanese Patent publications No. 65708/1992 and No. 88153/1993 and Japanese Patent Laid-open publication No. 173513/1997.
- Such golf club heads are considered to be capable of providing a larger launch angle and a longer carry of ball with their low center of gravity structure.
- In the conventional golf club heads, a longer carry is intended to be realized by repulsive forces of the thin-walled metallic striking face part, which is deformed due to the impact applied thereto when the golf club head hits a golf ball, and the thick-walled fiber reinforced plastic layer to which the deformation of the striking face part is directly transmitted.
- However, the deformation of the metallic striking face part at the time of striking the ball is very small. This small deformation can produce a deformation, in the thickness direction, of the fiber reinforced plastic layer therebehind, which produces a repulsive force against the ball. The repulsive force produced from the deformation of the layer alone is small, and the carry of the ball cannot be increased much.
- The present invention is made in the light of the above problem, and an object of the present invention is to provide a golf club head capable of providing a longer carry of a ball than ever before, by causing a larger repulsive force to act on the ball, which force is produced using deformation of a metallic striking face part at the time when the golf club head strikes the ball.
- To achieve the aforementioned object, the golf club head of the present invention includes: a metallic frame-shaped iron head body including a heel section, a toe section, an upper edge section connecting the superior ends of the heel section and of the toe section, and a sole section; and a metallic thin-walled face section, having a high coefficient of restitution, provided on a front face of the head body. The head body includes a rear wall section, spaced apart from the face section and extending upward from a rear end of the sole section. A reinforced fiber member is placed in an area surrounded by the face section, the sole section, and the rear wall section. The reinforced fiber member abuts on a back of the face section to form a closed hollow void section. A part of a back of the reinforced fiber member is supported on the rear wall section.
- When the golf club head strikes a golf ball, the face section is deformed to bulge backward and to compress the closed void section of the reinforced fiber member therebehind. With the compression force, the closed void section is elastically deformed. Elastic restoring forces of the face plate and of the void section are combined to act on the golf ball as a repulsive force, thus increasing the carry of the golf ball.
- Preferably, a part of the reinforced fiber member is shaped in a plate and brought in close contact with the back of the face section. The plate-shaped part of the reinforced fiber member and the other part thereof form an oblong sealed closed void section.
- Also preferably, the rear wall section is formed of a chevron-shaped extension section protruding upward from the rear end of the sole section and a belt-shaped extension section diagonally connecting the top of the chevron-shaped extension section and the upper end of the toe section.
- Hereinafter, a description is given of preferred embodiments of the present invention with reference to the accompanying drawings.
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FIG. 1 is a front view of an iron golf club head according to a preferred embodiment of the present invention. -
FIG. 2 is a rear view of the iron golf club head shown inFIG. 1 . -
FIG. 3 is a sectional view taken along a line III-III ofFIG. 2 . -
FIG. 4 is a rear view showing a second embodiment of the present invention. -
FIG. 5 is a sectional view taken along a line V-V ofFIG. 3 . - Hereinafter, a description is given of preferred embodiments of the present invention with reference to the accompanying drawings.
- FIGS. 1 to 3 show an iron golf club head according to a preferred embodiment of the present invention. In the front view of
FIG. 1 , ahead body 10 of the club head is formed in a frame-shape composed of ahosel section 1, into which a shaft (not shown) is inserted, aheel section 2 under thehosel section 1, a circular arc-shaped toe section 3, a belt-shapedupper edge section 4 connecting the upper ends of theheel section 2 and of thetoe section 3, and a sole 5 connecting the lower ends of theheel section 2 and of thetoe section 3. - As shown in
FIGS. 2 and 3 , on the back side of thehead body 10, a chevron-shaped extension section 6 and a belt-shaped section 7 are provided. The chevron-shaped extension section 6 protrudes upward from the rear edge of thesole section 5 substantially at a right angle thereto. The belt-shaped extension section 7 connects the top of the chevron-shaped extension section 6 and the upper end of thetoe section 3. In the rear view, in an area surrounded by bothextension sections heal section 2, andupper edge section 4 of the frame-shaped head body 10, a spindle-shaped gap section 8 is formed, which increases in diameter toward the heel section. In an area surrounded by bothextension sections toe section 3 of the frame-shaped head body 10, a substantiallysemicircular gap section 9 is formed. - Preferably, the frame-
shaped head body 10 including the aforementioned chevron-shaped and belt-shaped extension sections - To the front opening of the frame-
shaped head body 10, the peripheral edge part of aface plate 11 is integrally fixed by press fitting, welding, adhesion, or the like. Preferably, theface plate 11 is formed of a titanium alloy with a high coefficient of restitution. Theface plate 11 is 3 to 4 mm thick in the peripheral edge part and 1.0 to 2.5 mm thick in the striking face part except for the peripheral edge part. To the back of the striking face part of theface plate 11, a fiber reinforcedresin plate 12, composed of reinforced fibers of carbon or the like, is integrally bonded. Preferably, the thickness of the fiber reinforcedresin plate 12 is larger than that of the striking face part. Theface plate 11 includes a number of lateral grooves with predetermined width and depth in the striking face part as publicly known. - In the present invention, as shown in
FIG. 3 , a sheet-shaped fiber reinforced plastic (FRP)member 13 covers an inner surface of thesole section 5 of the frame-shaped head body 10 and stands substantially at a right angle on the rear end of thesole section 5 to extend entirely across theheel section 2, thetoe section 3, and theupper edge section 4 of the frame-shaped head body 10. Peripheral edge part of the fiber reinforcedplastic member 13 is tightly joined to the peripheral edge part of the fiber reinforcedresin plate 12, which is attached to the back of thefaceplate 11. Accordingly, a sealedhollow void section 14 is formed between the fiber reinforcedplastic member 13 and the fiber reinforcedresin plate 12, which is bonded to the back of theface plate 11. Thevoid section 14 has a substantially triangular shape section as shown inFIG. 3 , when vertically cut in a front to rear direction at the center of the head body. Part of the outer back of the fiber reinforcedplastic member 13, where the chevron-shaped and belt-shaped extension sections extension sections - In the lower back of the chevron-
shaped extension section 6, a triangular recess is formed, and aweight plate 15 composed of a tungsten plate is buried in the recess. - Since the iron golf club head of the present invention is structured as described above, when the
face plate 11 strikes a golf ball, the impact thereof causes theface plate 11 to bulge backward in the center part except the peripheral edge part supported by the frame-shaped head body 10. The deformation of theface plate 11, the back of which is integrally bonded to the fiber reinforcedresin plate 12 except the peripheral edge part, is comparatively large. Theface plate 11 bulging backward applies a force to compress the closedvoid section 14, which is formed between theface plate 11 and the fiber reinforcedplastic member 13 therebehind. With this compression force, part of the fiber reinforcedplastic member 13 which is not in contact with thehead body 10, specifically, portions of the back of the fiber reinforcedplastic member 13 corresponding to the spindle-shaped gap section 8 and to thesemicircular gap section 9, where the chevron-shaped and belt-shaped extension sections - The elastic restoring force of the
face plate 11 generated by such deformation and the elastic restoring force of the fiber reinforcedplastic member 13 deformed to swell outward are combined to act on the golf ball as a repulsive force. The carry of the golf ball thus provided can be therefore larger than the carry provided by the conventional golf club head using only elastic deformation of the face plate. - Next, a test for comparison was carried out using a golf swing robot, with the golf club head of the present invention according to the above embodiment and golf club heads of Comparative Examples 1 and 2. The golf club head of Comparative Example 1, was made solid by filling a carbon fiber reinforced resin member between the
aforementioned face plate 11, and the chevron-shaped and belt-shaped extension sections plastic member 13 is removed. In each of the golf club heads of the present invention and Comparative Examples 1 and 2, the striking face part of the face plate was composed of a titanium face of 1.5 mm thickness and of a carbon fiber reinforced resin plate of 2 mm thickness bonded to the back of the titanium face. The length of a club was 38.0 inches, and the loft was 25 degrees. Properties regarding head center of gravity and the coefficients of restitution of these golf club heads were measured as shown in Table 1.TABLE 1 Head Center of Gravity Properties Center of Center of Gravity Center of Gravity Golf Club Height Gravity Distance Coefficient of Name (mm) Depth (mm) (mm) Restitution Present 19.6 5.7 41.5 0.774 Invention Comparative 19.9 5.3 41.5 0.765 Example 1 Comparative 20.8 5.0 39.3 0.746 Example 2 - As apparent from Table 1, the golf club head of the present invention had a lower center of gravity and a higher coefficient of restitution than those of the golf club heads of Comparative Examples 1 and 2.
- Next, results of the test using the robot are shown in Table 2.
TABLE 2 Robot Test Result Head Initial Launch Spin Golf Club Speed Carry Speed Angle Rate Name (m/s) (Yard) (m/s) (°) (rpm) Present 33.0 150.8 44.5 18.7 3166 Invention Comparative 33.0 148.0 44.0 18.4 3567 Example 1 Comparative 33.0 144.3 42.7 17.2 3889 Example 2 - As apparent from Table 2, the launch angle of the golf club head according to the present invention was larger than those of Comparative examples 1 and 2, and the carry of the golf club head according to the present invention was much larger than those of Comparative Examples 1 and 2.
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FIGS. 4 and 5 show an iron golf club head according to a second embodiment of the present invention. The following description is given of differences of the golf club head of this embodiment from the golf club head of the first embodiment. - In this golf club head, the
sole section 5 is formed so that the rear part thereof is approximately twice thicker than the front part thereof. Arear center part 16 of thesole section 5 is substantially chevron-shaped and is swelled out as shown inFIG. 4 . To an upper rear end of thesole section 5, a firstmetallic plate material 17 is attached so as to extend upward. A triangular secondmetallic plate material 18 is attached to a lower surface of the belt-shapedupper edge section 4, which connects the upper ends of theheel section 2 and of thetoe section 3, so as to be pendent downward. A substantially V-shaped gap section is thus demarcated between theplates - In this embodiment, a thick sheet-shaped fiber reinforced
resin layer 19 a is placed in close contact with the back of theface plate 11, and another sheet-shaped fiber reinforcedresin layer 19 b of a medium-thickness, which is thinner than thefiber resin layer 19 a, is placed in close contact with inner surfaces of the firstmetallic plate 17 and of the secondmetallic plate 18. A thin fiber reinforcedresin layer 19 c is integrally joined to the peripheral edges of the fiber reinforced resin layers 19 a and 19 b, thus forming a closedhollow void section 14 a. - In this embodiment, the peripheral part which demarcates the
hollow void section 14 a is formed to be thin. Accordingly, when theface plate 11 strikes a golf ball and bulges backward, thehollow void section 14 a is easily deformed. Thevoid section 14 a is therefore greatly deformed, thus producing a larger elastic restoring force. - The present invention is not limited to the aforementioned embodiments. For example, the reinforced fibers can be glass fibers, aramid fibers and the like, in addition to carbon fibers.
- As described above, with the golf club head of the present invention, when the golf club head strikes a golf ball, the face section thereof is deformed to bulge backward and to compress the closed void section therebehind. The elastic restoring forces of the face plate and the compressed void section are combined to act on the golf ball as a repulsive force, thus increasing the carry of the golf ball.
Claims (9)
1. A golf club head, comprising:
a metallic frame-shaped iron head body including a heel section, a toe section, an upper edge section connecting the superior ends of the heel section and of the toe section, and a sole section; and
a metallic thin-walled face section, having a high coefficient of restitution, provided on a front face of the head body,
wherein the head body includes a rear wall section, which is spaced apart from the face section, and which extends upward from a rear end of the sole section,
a reinforced fiber member is placed in an area surrounded by the face section, the sole section, and the rear wall section, and abuts on a back of the face section to form a closed hollow void section, and
a part of a back of the reinforced fiber member is supported on the rear wall section.
2. The golf club head according to claim 1 , wherein a part of the reinforced fiber member is shaped in a plate and brought in close contact with the back of the face section, and the plate-shaped part of the reinforced fiber member and another part of the reinforced fiber member form an oblong sealed closed void section.
3. The golf club head according to any one of claims 1 and 2, wherein the rear wall section is integrally formed with the rear end of the sole section.
4. The golf club head according to any one of claims 1 and 2, wherein the rear wall section is formed from a metallic plate attached to the rear end of the sole section.
5. The golf club head according to any one of claims 1 and 2, wherein a fiber reinforced resin plate is placed in close contact with the back of the face section, and the fiber reinforced resin plate and the reinforced fiber member form a sealed closed void section having a substantially triangular section when vertically cut in a front to rear direction.
6. The golf club head according to any one of claims 1 and 4, wherein part of the reinforced fiber member abutting on the back of the face plate is thicker than part of the reinforced fiber member placed at a peripheral edge thereof.
7. The golf club head according to claim 3 , wherein the rear wall is composed of a chevron-shaped extension section protruding upward from an edge of the rear end of the sole section and a belt-shaped extension section diagonally connecting a top of the chevron-shaped extension section and an upper end of the toe section.
8. The golf club head according to any one of claims 1 to 7 , wherein the reinforced fiber member is formed by bending a sheet of carbon fiber prepreg.
9. The golf club head according to claim 7 , wherein a plate-shaped weight member is buried in a back of the chevron-shaped extension section.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2003415114 | 2003-12-12 | ||
JP2003-415114 | 2003-12-12 | ||
PCT/JP2004/018520 WO2005056125A1 (en) | 2003-12-12 | 2004-12-06 | Golf club head |
Publications (1)
Publication Number | Publication Date |
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US20070117653A1 true US20070117653A1 (en) | 2007-05-24 |
Family
ID=34675116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/581,101 Abandoned US20070117653A1 (en) | 2003-12-12 | 2004-12-06 | Golf club head |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070117653A1 (en) |
EP (1) | EP1693087A4 (en) |
JP (1) | JPWO2005056125A1 (en) |
CN (1) | CN1894006A (en) |
TW (1) | TW200526300A (en) |
WO (1) | WO2005056125A1 (en) |
Cited By (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080004131A1 (en) * | 2006-06-28 | 2008-01-03 | O-Ta Precision Industry Co., Inc. | Golf club head |
US20080004130A1 (en) * | 2006-06-28 | 2008-01-03 | O-Ta Precision Industry Co., Inc. | Golf club head |
US20080004132A1 (en) * | 2006-06-28 | 2008-01-03 | O-Ta Precision Industry Co., Inc. | Golf club head |
USD621893S1 (en) | 2010-03-17 | 2010-08-17 | Karsten Manufacturing Corporation | Golf club head |
US20100279796A1 (en) * | 2007-07-25 | 2010-11-04 | Karsten Manufacturing Corporation | Club Head Sets With Varying Characteristics And Related Methods |
US20100279795A1 (en) * | 2007-07-25 | 2010-11-04 | Karsten Manufacturing Corporation | Club Head Sets With Varying Characteristics And Related Methods |
USD627410S1 (en) | 2010-05-05 | 2010-11-16 | Karsten Manufacturing Corporation | Golf club head |
US20110034269A1 (en) * | 2009-08-06 | 2011-02-10 | Nike, Inc. | Golf club head or other ball striking device having face insert material |
USD635627S1 (en) | 2010-06-29 | 2011-04-05 | Karsten Manufacturing Corporation | Golf club head |
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- 2004-12-06 WO PCT/JP2004/018520 patent/WO2005056125A1/en active Application Filing
- 2004-12-06 US US10/581,101 patent/US20070117653A1/en not_active Abandoned
- 2004-12-06 JP JP2005516209A patent/JPWO2005056125A1/en active Pending
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Also Published As
Publication number | Publication date |
---|---|
CN1894006A (en) | 2007-01-10 |
JPWO2005056125A1 (en) | 2007-07-05 |
WO2005056125A1 (en) | 2005-06-23 |
EP1693087A4 (en) | 2008-06-18 |
TW200526300A (en) | 2005-08-16 |
EP1693087A1 (en) | 2006-08-23 |
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Legal Events
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AS | Assignment |
Owner name: YONEX KABUSHIKI KAISHA, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YONEYAMA, KOSAKU;REEL/FRAME:018158/0519 Effective date: 20060609 |
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STCB | Information on status: application discontinuation |
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