US20100331103A1 - Golf club head - Google Patents
Golf club head Download PDFInfo
- Publication number
- US20100331103A1 US20100331103A1 US12/652,783 US65278310A US2010331103A1 US 20100331103 A1 US20100331103 A1 US 20100331103A1 US 65278310 A US65278310 A US 65278310A US 2010331103 A1 US2010331103 A1 US 2010331103A1
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- United States
- Prior art keywords
- gravity center
- characteristic adjusting
- main body
- golf club
- club head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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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
- A63B53/0466—Heads wood-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
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0433—Heads with special sole configurations
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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
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/02—Ballast means for adjusting the centre of mass
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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
- A63B2053/0491—Heads with added weights, e.g. changeable, replaceable
Definitions
- the present invention relates to a golf club head capable of adjusting a gravity center thereof.
- Patent Reference discloses a conventional golf club head whose gravity center position is changeable.
- the conventional golf club head disclosed in Patent Reference has a recess portion behind a ball hitting face thereof.
- the recess portion has a diameter equal to or larger than a diameter of a golf ball.
- the conventional golf club head also includes a movable weight for adjusting a gravity center position thereof by moving the movable weight outward and inward inside the recess portion.
- Patent Reference Japanese Patent Publication No. 2006-101918
- the recess portion with a size at least the same as that of the golf ball is provided behind the ball hitting face, and the movable weight is disposed inside the recess portion. Accordingly, the conventional golf club head has an unusual shape.
- an object of the present invention is to provide a golf club head capable of adjusting a gravity center position without having an unusual shape.
- a golf club head includes a hollow head main body provided with a recess portion in a sole portion thereof; a gravity center characteristic adjusting portion with a plate shape disposed in the recess portion between a center part of the recess portion and a part of a surrounding wall of the recess portion; and a fixing portion for fixing the gravity center characteristic adjusting portion onto the hollow head main body at an arbitrary rotational position.
- the golf club head includes the recess portion in the sole portion of the hollow head main body, and the gravity center characteristic adjusting portion with the plate shape is disposed in the recess portion. Further, the fixing portion is provided for fixing the gravity center characteristic adjusting portion with the plate shape onto the head main body at an arbitrary rotational position, so that a position of the gravity center of the golf club head is adjusted. Therefore, it is possible to change the position of the gravity center without forming the golf club head in an unusual shape.
- the gravity center characteristic adjusting portion may have a screw insertion hole at a position corresponding to the center of the recess portion of the head main body.
- the fixing portion is formed of a male screw portion having a head portion and a shaft portion, and a screw thread is formed on an outer circumference of the shaft portion.
- a female screw portion is provided at the center of the recess portion of the head main body.
- the gravity center characteristic adjusting portion is placed inside the recess portion of the head main body, and the shaft portion of the fixing portion is inserted into the screw insertion hole and engages the female screw portion. Accordingly, it is possible to fix the gravity center characteristic adjusting portion onto the head main body at an arbitrary rotational position.
- the golf club head may include an anti-rotation mechanism.
- the anti-rotation mechanism includes a protruding portion formed on one of the head main body and the gravity center characteristic adjusting portion, and an engaging groove formed in the other of the head main body and the gravity center characteristic adjusting portion for engaging the protruding portion. Accordingly, it is possible to prevent the gravity center characteristic adjusting portion fixed onto the head main body from rotating when the golf club is swung.
- the golf club head may be provided with a rib on a back side (a side of a hollow portion) of the recess portion formed in the sole portion of the head main body.
- the rib it is possible to improve an impact sound produced when a ball is hit.
- the recess portion disposed in the sole portion of the head main body has a substantially flat bottom. Accordingly, the golf club head tends to be deformed and the impact sound tends to be low when the golf club head hits a ball.
- the rib it is possible to increase a rigidity of the golf club head, thereby improving the impact sound.
- the golf club head of the present invention it is possible to adjust the position of the gravity center without having an unusual shape.
- FIG. 1 is a bottom view showing a golf club head viewed from a sole side thereof according to a first embodiment of the present invention
- FIG. 2 is a sectional view showing the golf club head taken along a projected line II-II in FIG. 1 according to the first embodiment of the present invention
- FIGS. 3(A) and 3(B) are views showing an example No. 1 of a gravity center characteristic adjusting portion of the golf club head according to the first embodiment of the present invention, wherein FIG. 3(A) is a perspective view thereof and FIG. 3(B) is a schematic sectional view thereof in a state that the gravity center characteristic adjusting portion is fixed onto a head main body;
- FIGS. 4(A) and 4(B) are views showing an example No. 2 of the gravity center characteristic adjusting portion of the golf club head according to the first embodiment of the present invention, wherein FIG. 4(A) is a perspective view thereof and FIG. 4(B) is a schematic sectional view thereof in the state that the gravity center characteristic adjusting portion is fixed onto the head main body;
- FIGS. 5(A) and 5(B) are views showing an example No. 3 of the gravity center characteristic adjusting portion of the golf club head according to the first embodiment of the present invention, wherein FIG. 5(A) is a perspective view thereof and FIG. 5(B) is a schematic sectional view thereof in the state that the gravity center characteristic adjusting portion is fixed onto the head main body;
- FIG. 6 is a perspective view showing a fixing portion or a male screw portion of the golf club head according to the first embodiment of the present invention
- FIG. 7 is a perspective view showing a cover of the golf club head according to the first embodiment of the present invention.
- FIG. 8(A) is a schematic plan view showing a gravity center characteristic adjusting portion of a golf club head according to a second embodiment of the present invention.
- FIG. 8(B) is a schematic plan view showing another gravity center characteristic adjusting portion of the golf club head according to the second embodiment of the present invention.
- FIG. 9 is a schematic view showing an anti-rotation mechanism of a gravity center characteristic adjusting portion according to a third embodiment of the present invention.
- FIG. 10 is a partial cutout perspective view showing a golf club head having ribs on a back side of a recess portion disposed in a sole portion of a head main body according to a fourth embodiment of the present invention.
- FIGS. 1 and 2 show a golf club head 10 according to the first embodiment of the present invention.
- FIG. 1 is a bottom view showing the golf club head 10 viewed from a sole side thereof, and
- FIG. 2 is a sectional view taken along a projected line II-II in FIG. 1 .
- the golf club head 10 is provided with a head main body 12 .
- the head main body 12 includes a hollow portion 14 .
- a recess portion 16 with a substantially circular shape is disposed in a sole portion of the head main body 12 .
- a female screw portion 18 with a hole shape is provided in the recess portion 16 of the head main body 12 at a center thereof.
- the head main body 12 There is no limitation to a material of the head main body 12 .
- fiber reinforced resins and metals such as titanium, a titanium alloy, stainless steel, aluminum, an aluminum alloy, a beryllium copper alloy and a magnesium alloy may be used to form the head main body 12 .
- a gravity center characteristics adjusting portion 20 is disposed in the recess portion 16 of the head main body 12 .
- the gravity center characteristic adjusting portion 20 is a substantially fan-shaped plate and disposed between the center and a part of a surrounding wall 22 of the recess portion 16 of the head main body 12 .
- the gravity center characteristic adjusting portion 20 has a screw insertion hole 24 at a position corresponding to the center of the recess portion 16 of the head main body 12 .
- the gravity center characteristic adjusting portion 20 is preferred to have a specific gravity from 0.9 to 19.3.
- the gravity center characteristic adjusting portion 20 may have configurations shown in FIGS. 3(A) , 3 (B), 4 (A), 4 (B), 5 (A), and 5 (B).
- a cover 36 (explained later) is omitted.
- FIGS. 3(A) and 3(B) are views showing an example No. 1 of the gravity center characteristic adjusting portion 20 of the golf club head 10 according to the first embodiment of the present invention.
- the gravity center characteristic adjusting portion 20 has a ring-shaped convex portion 26 formed around the screw insertion hole 24 .
- the convex portion 26 abuts at a bottom thereof against a bottom surface of the recess portion 16 of the head main body 12 . Accordingly, even if the bottom surface of the recess portion 16 is curved to a certain extent, the gravity center characteristic adjusting portion 20 can be securely fixed onto the head main body 12 . Further, a fan-shaped part of the gravity center characteristic adjusting portion 20 formed at one end thereof does not touch the bottom surface of the recess portion 16 , so that the gravity center characteristic adjusting portion 20 can rotate smoothly.
- FIGS. 4(A) and 4(B) are views showing an example No. 2 of the gravity center characteristic adjusting portion 20 of the golf club head 10 according to the first embodiment of the present invention.
- the gravity center characteristic adjusting portion 20 has a fan-shaped bent portion 28 at one side thereof. A bottom surface of the bent portion 28 abuts against the bottom surface of the recess portion 16 . Accordingly, the gravity center characteristic adjusting portion 20 can be securely fixed onto the head main body 12 , even if the bottom surface of the recess portion 16 is curved to a certain extent. Further, a washer 31 is disposed between the gravity center characteristic adjusting portion 20 and the bottom surface of the recess portion 16 . Accordingly, when the gravity center characteristic adjusting portion 20 is attached to the head main body 12 , a base end portion of the gravity center characteristic adjusting portion 20 becomes parallel to the bottom surface of the recess portion 16 .
- FIGS. 5(A) and 5(B) are views showing an example No. 3 of the gravity center characteristic adjusting portion 20 of the golf club head 10 according to the first embodiment of the present invention.
- the gravity center characteristic adjusting portion 20 is entirely formed in a flat shape.
- the gravity center characteristic adjusting portion 20 abuts against the bottom surface of the recess portion 16 of the head main body 12 over an entire surface thereof.
- the gravity center characteristic adjusting portion 20 contacts with the recess portion 16 in a large area. Accordingly, the gravity center characteristic adjusting portion 20 can be securely fixed onto the head main body 12 .
- a fixing portion or a male screw portion 30 fixes the gravity center characteristic adjusting portion 20 onto the head main body 12 at an arbitrary rotational position.
- the fixing portion 30 has a head portion 32 and a shaft portion 34 , and a screw thread is formed on an outer circumference of the shaft portion 34 .
- a material of the fixing portion 30 For example, metals such as stainless steel, aluminum, an aluminum alloy, titanium, a titanium alloy and a magnesium alloy may be used for producing the fixing portion 30 .
- plastics such as a polyester and a nylon may be used.
- the cover 36 is disposed between the head portion 32 of the fixing portion 30 and the gravity center characteristic adjusting portion 20 .
- the cover 36 includes a base plate 40 having a substantially ring shape.
- the base plate 40 includes a screw insertion hole 38 at a center thereof, and protruding portions 42 on one side thereof.
- the cover 36 is provided for preventing the gravity center characteristic adjusting portion 20 from rotating due to a shock of hitting a ball.
- a material of the cover 30 There is no limitation to a material of the cover 30 .
- metals such as stainless steel, aluminum, an aluminum alloy, titanium, a titanium alloy and a magnesium alloy may be used for producing the cover 30 .
- plastics such as a polyester and a nylon may be used.
- the gravity center characteristic adjusting portion 20 is placed inside the recess portion 16 of the head main body 12 .
- the cover 36 is placed on the gravity center characteristic adjusting portion 20 .
- the shaft portion 34 of the fixing portion 30 is sequentially inserted into both the screw insertion hole 38 of the cover 36 and the screw insertion hole 24 of the gravity center characteristic adjusting portion 20 .
- the shaft portion 34 is screwed into the female screw portion 18 by turning the head portion 32 of the fixing portion 30 with a tool. Accordingly, it is possible to fix the gravity center characteristic adjusting portion 20 onto the head main body 12 at an arbitrary rotational position.
- FIG. 8(A) is a schematic plan view showing a gravity center characteristic adjusting portion 50 of the golf club head 10 according to the second embodiment of the present invention.
- FIG. 8(B) is a schematic plan view showing a gravity center characteristic adjusting portion 52 of the golf club head 10 according to the second embodiment of the present invention.
- the gravity center characteristic adjusting portion 50 has a rectangular shape. As shown in FIG. 8(B) , the gravity center characteristic adjusting portion 52 has an oval shape.
- FIG. 9 is a schematic view showing an anti-rotation mechanism of a gravity center characteristic adjusting portion 72 according to the third embodiment of the present invention.
- the gravity center characteristic adjusting portion 72 is fixed to a head main body 68 .
- the head main body 68 has engaging grooves 70
- the gravity center characteristic adjusting portion 72 has a protruding portion 74 for engaging one of the engaging grooves 70 .
- the engaging grooves 70 and the protruding portion 74 constitute the anti-rotation mechanism.
- the head main body 68 may have a protruding portion, and the gravity center characteristic adjusting portion 72 may have engaging grooves for engaging the protruding portion.
- the number of the protruding portion and the engaging grooves may be arbitrary.
- FIG. 10 is a partial cutout perspective view showing a golf club head having ribs 80 on a back side of a recess portion 78 disposed in a sole portion of a head main body 76 according to the fourth embodiment of the present invention.
- the head main body 76 has the ribs 80 with an arbitrary shape at the back side of the recess portion 78 (a side of a hollow portion) disposed in the sole portion of the head main body 76 .
- the ribs 80 are formed in the head main body 76 , it is preferable that the ribs 80 have a uniform height. Accordingly, when a gravity center characteristic adjusting portion is disposed in the recess portion 78 , it is possible to easily rotate the gravity center characteristic adjusting portion.
- the recess portion 78 disposed in the sole portion of the head main body 76 has a substantially flat bottom. Accordingly, the golf club head tends to be deformed and the impact sound tends to be low when the golf club head hits a ball. With the ribs 80 , it is possible to increase rigidity of the golf club head, thereby improving the impact sound.
Abstract
A golf club head includes a hollow head main body provided with a recess portion in a sole portion thereof; a gravity center characteristic adjusting portion with a plate shape disposed in the recess portion between a center part of the recess portion and a part of a surrounding wall of the recess portion; and a fixing portion for fixing the gravity center characteristic adjusting portion onto the hollow head main body at an arbitrary rotational position.
Description
- The present invention relates to a golf club head capable of adjusting a gravity center thereof.
- Patent Reference discloses a conventional golf club head whose gravity center position is changeable. The conventional golf club head disclosed in Patent Reference has a recess portion behind a ball hitting face thereof. The recess portion has a diameter equal to or larger than a diameter of a golf ball. The conventional golf club head also includes a movable weight for adjusting a gravity center position thereof by moving the movable weight outward and inward inside the recess portion.
- Patent Reference: Japanese Patent Publication No. 2006-101918
- In the conventional golf club head disclosed in Patent Reference, the recess portion with a size at least the same as that of the golf ball is provided behind the ball hitting face, and the movable weight is disposed inside the recess portion. Accordingly, the conventional golf club head has an unusual shape.
- In view of the problem described above, an object of the present invention is to provide a golf club head capable of adjusting a gravity center position without having an unusual shape.
- Further objects and advantages of the invention will be apparent from the following description of the invention.
- In order to attain the object described above, according to a first aspect of the present invention, a golf club head includes a hollow head main body provided with a recess portion in a sole portion thereof; a gravity center characteristic adjusting portion with a plate shape disposed in the recess portion between a center part of the recess portion and a part of a surrounding wall of the recess portion; and a fixing portion for fixing the gravity center characteristic adjusting portion onto the hollow head main body at an arbitrary rotational position.
- In the first aspect of the present invention, the golf club head includes the recess portion in the sole portion of the hollow head main body, and the gravity center characteristic adjusting portion with the plate shape is disposed in the recess portion. Further, the fixing portion is provided for fixing the gravity center characteristic adjusting portion with the plate shape onto the head main body at an arbitrary rotational position, so that a position of the gravity center of the golf club head is adjusted. Therefore, it is possible to change the position of the gravity center without forming the golf club head in an unusual shape.
- According to a second aspect of the present invention, in the golf club head in the first aspect, the gravity center characteristic adjusting portion may have a screw insertion hole at a position corresponding to the center of the recess portion of the head main body. The fixing portion is formed of a male screw portion having a head portion and a shaft portion, and a screw thread is formed on an outer circumference of the shaft portion. A female screw portion is provided at the center of the recess portion of the head main body. The gravity center characteristic adjusting portion is placed inside the recess portion of the head main body, and the shaft portion of the fixing portion is inserted into the screw insertion hole and engages the female screw portion. Accordingly, it is possible to fix the gravity center characteristic adjusting portion onto the head main body at an arbitrary rotational position.
- According to a third aspect of the present invention, the golf club head may include an anti-rotation mechanism. The anti-rotation mechanism includes a protruding portion formed on one of the head main body and the gravity center characteristic adjusting portion, and an engaging groove formed in the other of the head main body and the gravity center characteristic adjusting portion for engaging the protruding portion. Accordingly, it is possible to prevent the gravity center characteristic adjusting portion fixed onto the head main body from rotating when the golf club is swung.
- According to a fourth aspect of the present invention, the golf club head may be provided with a rib on a back side (a side of a hollow portion) of the recess portion formed in the sole portion of the head main body. With the rib, it is possible to improve an impact sound produced when a ball is hit. More specifically, the recess portion disposed in the sole portion of the head main body has a substantially flat bottom. Accordingly, the golf club head tends to be deformed and the impact sound tends to be low when the golf club head hits a ball. With the rib, it is possible to increase a rigidity of the golf club head, thereby improving the impact sound.
- In the golf club head of the present invention, it is possible to adjust the position of the gravity center without having an unusual shape.
-
FIG. 1 is a bottom view showing a golf club head viewed from a sole side thereof according to a first embodiment of the present invention; -
FIG. 2 is a sectional view showing the golf club head taken along a projected line II-II inFIG. 1 according to the first embodiment of the present invention; -
FIGS. 3(A) and 3(B) are views showing an example No. 1 of a gravity center characteristic adjusting portion of the golf club head according to the first embodiment of the present invention, whereinFIG. 3(A) is a perspective view thereof andFIG. 3(B) is a schematic sectional view thereof in a state that the gravity center characteristic adjusting portion is fixed onto a head main body; -
FIGS. 4(A) and 4(B) are views showing an example No. 2 of the gravity center characteristic adjusting portion of the golf club head according to the first embodiment of the present invention, whereinFIG. 4(A) is a perspective view thereof andFIG. 4(B) is a schematic sectional view thereof in the state that the gravity center characteristic adjusting portion is fixed onto the head main body; -
FIGS. 5(A) and 5(B) are views showing an example No. 3 of the gravity center characteristic adjusting portion of the golf club head according to the first embodiment of the present invention, whereinFIG. 5(A) is a perspective view thereof andFIG. 5(B) is a schematic sectional view thereof in the state that the gravity center characteristic adjusting portion is fixed onto the head main body; -
FIG. 6 is a perspective view showing a fixing portion or a male screw portion of the golf club head according to the first embodiment of the present invention; -
FIG. 7 is a perspective view showing a cover of the golf club head according to the first embodiment of the present invention; -
FIG. 8(A) is a schematic plan view showing a gravity center characteristic adjusting portion of a golf club head according to a second embodiment of the present invention; -
FIG. 8(B) is a schematic plan view showing another gravity center characteristic adjusting portion of the golf club head according to the second embodiment of the present invention; -
FIG. 9 is a schematic view showing an anti-rotation mechanism of a gravity center characteristic adjusting portion according to a third embodiment of the present invention; and -
FIG. 10 is a partial cutout perspective view showing a golf club head having ribs on a back side of a recess portion disposed in a sole portion of a head main body according to a fourth embodiment of the present invention. - Hereunder, embodiments of the present invention will be explained with reference to the accompanying drawings.
- A first embodiment of the present invention will be explained.
FIGS. 1 and 2 show agolf club head 10 according to the first embodiment of the present invention.FIG. 1 is a bottom view showing thegolf club head 10 viewed from a sole side thereof, andFIG. 2 is a sectional view taken along a projected line II-II inFIG. 1 . - As shown in
FIGS. 1 and 2 , thegolf club head 10 is provided with a headmain body 12. The headmain body 12 includes ahollow portion 14. Arecess portion 16 with a substantially circular shape is disposed in a sole portion of the headmain body 12. Afemale screw portion 18 with a hole shape is provided in therecess portion 16 of the headmain body 12 at a center thereof. - There is no limitation to a material of the head
main body 12. For example, fiber reinforced resins and metals such as titanium, a titanium alloy, stainless steel, aluminum, an aluminum alloy, a beryllium copper alloy and a magnesium alloy may be used to form the headmain body 12. - As shown in
FIGS. 1 and 2 , a gravity centercharacteristics adjusting portion 20 is disposed in therecess portion 16 of the headmain body 12. The gravity centercharacteristic adjusting portion 20 is a substantially fan-shaped plate and disposed between the center and a part of a surroundingwall 22 of therecess portion 16 of the headmain body 12. The gravity centercharacteristic adjusting portion 20 has ascrew insertion hole 24 at a position corresponding to the center of therecess portion 16 of the headmain body 12. - There is no limitation to a material of the gravity center
characteristic adjusting portion 20. For example, metals such as tungsten, a tungsten alloy, stainless steel, aluminum, and an aluminum alloy may be used for producing the gravity centercharacteristic adjusting portion 20. Also, plastics such as a polyester and a nylon may be used. The gravity centercharacteristic adjusting portion 20 is preferred to have a specific gravity from 0.9 to 19.3. - In the embodiment, the gravity center
characteristic adjusting portion 20 may have configurations shown inFIGS. 3(A) , 3(B), 4(A), 4(B), 5(A), and 5(B). InFIGS. 3(B) , 4(B), and 5(B), a cover 36 (explained later) is omitted. -
FIGS. 3(A) and 3(B) are views showing an example No. 1 of the gravity centercharacteristic adjusting portion 20 of thegolf club head 10 according to the first embodiment of the present invention. - In the example No. 1 shown in
FIGS. 3(A) and 3(B) , the gravity centercharacteristic adjusting portion 20 has a ring-shaped convex portion 26 formed around thescrew insertion hole 24. Theconvex portion 26 abuts at a bottom thereof against a bottom surface of therecess portion 16 of the headmain body 12. Accordingly, even if the bottom surface of therecess portion 16 is curved to a certain extent, the gravity centercharacteristic adjusting portion 20 can be securely fixed onto the headmain body 12. Further, a fan-shaped part of the gravity centercharacteristic adjusting portion 20 formed at one end thereof does not touch the bottom surface of therecess portion 16, so that the gravity centercharacteristic adjusting portion 20 can rotate smoothly. -
FIGS. 4(A) and 4(B) are views showing an example No. 2 of the gravity centercharacteristic adjusting portion 20 of thegolf club head 10 according to the first embodiment of the present invention. - In the example No. 2 shown in
FIGS. 4(A) and 4(B) , the gravity centercharacteristic adjusting portion 20 has a fan-shapedbent portion 28 at one side thereof. A bottom surface of thebent portion 28 abuts against the bottom surface of therecess portion 16. Accordingly, the gravity centercharacteristic adjusting portion 20 can be securely fixed onto the headmain body 12, even if the bottom surface of therecess portion 16 is curved to a certain extent. Further, awasher 31 is disposed between the gravity centercharacteristic adjusting portion 20 and the bottom surface of therecess portion 16. Accordingly, when the gravity centercharacteristic adjusting portion 20 is attached to the headmain body 12, a base end portion of the gravity centercharacteristic adjusting portion 20 becomes parallel to the bottom surface of therecess portion 16. -
FIGS. 5(A) and 5(B) are views showing an example No. 3 of the gravity centercharacteristic adjusting portion 20 of thegolf club head 10 according to the first embodiment of the present invention. - In the example No. 3 shown in
FIGS. 5(A) and 5(B) , the gravity centercharacteristic adjusting portion 20 is entirely formed in a flat shape. The gravity centercharacteristic adjusting portion 20 abuts against the bottom surface of therecess portion 16 of the headmain body 12 over an entire surface thereof. With the configuration described above, the gravity centercharacteristic adjusting portion 20 contacts with therecess portion 16 in a large area. Accordingly, the gravity centercharacteristic adjusting portion 20 can be securely fixed onto the headmain body 12. - In the embodiment, a fixing portion or a
male screw portion 30 fixes the gravity centercharacteristic adjusting portion 20 onto the headmain body 12 at an arbitrary rotational position. As shown inFIG. 6 , the fixingportion 30 has ahead portion 32 and ashaft portion 34, and a screw thread is formed on an outer circumference of theshaft portion 34. There is no limitation to a material of the fixingportion 30. For example, metals such as stainless steel, aluminum, an aluminum alloy, titanium, a titanium alloy and a magnesium alloy may be used for producing the fixingportion 30. Also, plastics such as a polyester and a nylon may be used. - In the embodiment, the
cover 36 is disposed between thehead portion 32 of the fixingportion 30 and the gravity centercharacteristic adjusting portion 20. As shown inFIG. 7 , thecover 36 includes abase plate 40 having a substantially ring shape. Thebase plate 40 includes ascrew insertion hole 38 at a center thereof, and protrudingportions 42 on one side thereof. Thecover 36 is provided for preventing the gravity centercharacteristic adjusting portion 20 from rotating due to a shock of hitting a ball. There is no limitation to a material of thecover 30. For example, metals such as stainless steel, aluminum, an aluminum alloy, titanium, a titanium alloy and a magnesium alloy may be used for producing thecover 30. Also, plastics such as a polyester and a nylon may be used. - In the embodiment, when the
golf club head 10 is assembled, first, the gravity centercharacteristic adjusting portion 20 is placed inside therecess portion 16 of the headmain body 12. Next, thecover 36 is placed on the gravity centercharacteristic adjusting portion 20. Then, theshaft portion 34 of the fixingportion 30 is sequentially inserted into both thescrew insertion hole 38 of thecover 36 and thescrew insertion hole 24 of the gravity centercharacteristic adjusting portion 20. Lastly, theshaft portion 34 is screwed into thefemale screw portion 18 by turning thehead portion 32 of the fixingportion 30 with a tool. Accordingly, it is possible to fix the gravity centercharacteristic adjusting portion 20 onto the headmain body 12 at an arbitrary rotational position. - A second embodiment of the present invention will be explained.
FIG. 8(A) is a schematic plan view showing a gravity centercharacteristic adjusting portion 50 of thegolf club head 10 according to the second embodiment of the present invention.FIG. 8(B) is a schematic plan view showing a gravity centercharacteristic adjusting portion 52 of thegolf club head 10 according to the second embodiment of the present invention. - As shown in
FIG. 8(A) , the gravity centercharacteristic adjusting portion 50 has a rectangular shape. As shown inFIG. 8(B) , the gravity centercharacteristic adjusting portion 52 has an oval shape. - A third embodiment of the present invention will be explained.
FIG. 9 is a schematic view showing an anti-rotation mechanism of a gravity centercharacteristic adjusting portion 72 according to the third embodiment of the present invention. - As shown in
FIG. 9 , the gravity centercharacteristic adjusting portion 72 is fixed to a headmain body 68. The headmain body 68 has engaginggrooves 70, and the gravity centercharacteristic adjusting portion 72 has a protrudingportion 74 for engaging one of the engaginggrooves 70. The engaginggrooves 70 and the protrudingportion 74 constitute the anti-rotation mechanism. When the protrudingportion 74 engages one of the engaginggrooves 70, it is possible to prevent the gravity centercharacteristic adjusting portion 72 disposed on the headmain body 68 from rotating. - In the embodiment, alternatively, the head
main body 68 may have a protruding portion, and the gravity centercharacteristic adjusting portion 72 may have engaging grooves for engaging the protruding portion. The number of the protruding portion and the engaging grooves may be arbitrary. - A fourth embodiment of the present invention will be explained.
FIG. 10 is a partial cutout perspective view showing a golf clubhead having ribs 80 on a back side of arecess portion 78 disposed in a sole portion of a headmain body 76 according to the fourth embodiment of the present invention. - As shown in
FIG. 10 , the headmain body 76 has theribs 80 with an arbitrary shape at the back side of the recess portion 78 (a side of a hollow portion) disposed in the sole portion of the headmain body 76. When theribs 80 are formed in the headmain body 76, it is preferable that theribs 80 have a uniform height. Accordingly, when a gravity center characteristic adjusting portion is disposed in therecess portion 78, it is possible to easily rotate the gravity center characteristic adjusting portion. - In the embodiment, with the
ribs 80, it is possible to improve an impact sound produced when a ball is hit. More specifically, therecess portion 78 disposed in the sole portion of the headmain body 76 has a substantially flat bottom. Accordingly, the golf club head tends to be deformed and the impact sound tends to be low when the golf club head hits a ball. With theribs 80, it is possible to increase rigidity of the golf club head, thereby improving the impact sound. - The disclosure of Japanese Patent Application No. 2009-153807, filed on Jun. 29, 2009 is incorporated in the application by reference.
- While the invention has been explained with reference to the specific embodiments of the invention, the explanation is illustrative and the invention is limited only by the appended claims.
Claims (4)
1. A golf club head comprising:
a head main body having a recess portion in a sole portion thereof;
a gravity center characteristic adjusting portion disposed in the recess portion; and
a fixing portion for fixing the gravity center characteristic adjusting portion onto the hollow head main body at an arbitrary rotational position.
2. The golf club head according to claim 1 , wherein said gravity center characteristic adjusting portion includes a screw insertion hole, said fixing portion includes a male screw portion having a head portion and a shaft portion, and said head main body includes a female screw portion so that the shaft portion is inserted in the screw insertion hole to engage the female screw portion.
3. The golf club head according to claim 1 , further comprising an anti-rotation mechanism, said anti-rotation mechanism including a protruding portion formed on one of the head main body and the gravity center characteristic adjusting portion, and an engaging groove formed in the other of the head main body and the gravity center characteristic adjusting portion for engaging the protruding portion.
4. The golf club head according to claim 1 , further comprising a rib disposed in the recess portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-153807 | 2009-06-29 | ||
JP2009153807A JP2011005167A (en) | 2009-06-29 | 2009-06-29 | Golf club head |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100331103A1 true US20100331103A1 (en) | 2010-12-30 |
Family
ID=43381350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/652,783 Abandoned US20100331103A1 (en) | 2009-06-29 | 2010-01-06 | Golf club head |
Country Status (2)
Country | Link |
---|---|
US (1) | US20100331103A1 (en) |
JP (1) | JP2011005167A (en) |
Cited By (34)
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US20100105499A1 (en) * | 2005-04-21 | 2010-04-29 | Acushnet Company | Golf club head with moveable insert |
US20130005501A1 (en) * | 2011-06-30 | 2013-01-03 | Gentry Ferguson | Hollow golf club with high density weights |
US8790195B1 (en) * | 2012-12-27 | 2014-07-29 | Callaway Golf Company | Golf club head with adjustable characteristics |
US8938871B2 (en) | 2005-04-21 | 2015-01-27 | Cobra Golf Incorporated | Golf club head with high specific-gravity materials |
US8968116B1 (en) * | 2012-12-27 | 2015-03-03 | Callaway Golf Company | Golf club head with adjustable characteristics |
US20150321055A1 (en) * | 2014-05-07 | 2015-11-12 | Acushnet Company | Metal wood club |
US9220957B1 (en) * | 2012-12-27 | 2015-12-29 | Callaway Golf Company | Golf club head with adjustable characteristics |
US9238162B2 (en) | 2014-04-25 | 2016-01-19 | Cobra Golf Incorporated | Golf club with adjustable weight assembly |
US9433836B2 (en) | 2014-04-25 | 2016-09-06 | Cobra Golf Incorporated | Golf club with adjustable weight assembly |
US9440123B2 (en) | 2005-04-21 | 2016-09-13 | Cobra Golf Incorporated | Golf club head with accessible interior |
US9504889B2 (en) | 2005-04-21 | 2016-11-29 | Cobra Golf Incorporated | Golf club with multi-component construction |
US20160361613A1 (en) * | 2015-06-09 | 2016-12-15 | Dunlop Sports Co. Ltd. | Golf club head |
US20170050091A1 (en) * | 2015-08-18 | 2017-02-23 | Dunlop Sports Co. Ltd. | Golf club head |
US9616301B2 (en) | 2005-04-21 | 2017-04-11 | Cobra Golf Incorporated | Releasable threaded component for a golf club having a mechanism for preventing over rotation |
US9636553B1 (en) * | 2012-12-27 | 2017-05-02 | Callaway Golf Company | Golf club head with adjustable weight bar |
US9682296B1 (en) * | 2012-12-27 | 2017-06-20 | Callaway Golf Company | Golf club head with adjustable weight bar |
US9731175B1 (en) * | 2012-12-27 | 2017-08-15 | Callaway Golf Company | Golf club head with adjustable weight bar |
US9764210B2 (en) | 2014-04-25 | 2017-09-19 | Cobra Golf Incorporated | Golf club head with internal cap |
US9855474B2 (en) | 2005-04-21 | 2018-01-02 | Cobra Golf Incorporated | Golf club head with accessible interior |
US9901794B2 (en) | 2005-04-21 | 2018-02-27 | Cobra Golf Incorporated | Golf club head with removable component |
US10369437B1 (en) * | 2018-08-20 | 2019-08-06 | Acushnet Company | Wood-type golf club including center of gravity adjustment |
US10434384B2 (en) | 2010-12-28 | 2019-10-08 | Taylor Made Golf Company, Inc. | Golf club head |
US10486042B1 (en) * | 2018-05-17 | 2019-11-26 | Callaway Golf Company | Golf club head with adjustable center of gravity |
US10556161B2 (en) | 2016-05-25 | 2020-02-11 | Karsten Manufacturing Corporation | Adjustable weight club head |
US10603555B2 (en) | 2010-12-28 | 2020-03-31 | Taylor Made Golf Company, Inc. | Golf club head |
US10639524B2 (en) | 2010-12-28 | 2020-05-05 | Taylor Made Golf Company, Inc. | Golf club head |
US10653926B2 (en) * | 2018-07-23 | 2020-05-19 | Taylor Made Golf Company, Inc. | Golf club heads |
US10835791B1 (en) * | 2020-03-02 | 2020-11-17 | Callaway Golf Company | Golf club head with adjustable sole weight |
US10898764B2 (en) | 2010-12-28 | 2021-01-26 | Taylor Made Golf Company, Inc. | Golf club head |
US11266889B2 (en) * | 2019-07-06 | 2022-03-08 | Pelican Golf, Inc. | Golf clubs having weighting system with movable weights |
US11406881B2 (en) | 2020-12-28 | 2022-08-09 | Taylor Made Golf Company, Inc. | Golf club heads |
US11679313B2 (en) | 2021-09-24 | 2023-06-20 | Acushnet Company | Golf club head |
US11759685B2 (en) | 2020-12-28 | 2023-09-19 | Taylor Made Golf Company, Inc. | Golf club heads |
US11819741B2 (en) * | 2010-09-30 | 2023-11-21 | Karsten Manufacturing Corporation | Golf club head and golf club head structures |
Families Citing this family (8)
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US8425348B2 (en) * | 2010-09-30 | 2013-04-23 | Nike, Inc. | Golf club with adjustable weight |
US9211453B1 (en) * | 2012-11-16 | 2015-12-15 | Callaway Golf Company | Golf club head with adjustable center of gravity |
US9694256B2 (en) * | 2012-11-16 | 2017-07-04 | Callaway Golf Company | Golf club head with adjustable center of gravity |
US9364728B1 (en) * | 2012-11-16 | 2016-06-14 | Callaway Golf Company | Golf club head with adjustable center of gravity |
US9205311B2 (en) * | 2013-03-04 | 2015-12-08 | Karsten Manufacturing Corporation | Club head with sole mass element and related method |
US9415280B2 (en) * | 2013-07-26 | 2016-08-16 | Karsten Manufacturing Corporation | Golf club heads with sole weights and related methods |
JP6430728B2 (en) * | 2014-06-30 | 2018-11-28 | 住友ゴム工業株式会社 | Golf club head |
US10071293B2 (en) * | 2015-11-12 | 2018-09-11 | Green Golf LLC | Golf putter heads |
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GB2327889B (en) * | 1997-08-09 | 1999-10-06 | Wang Samw Hong Jen | Golf club head |
JP2004135858A (en) * | 2002-10-17 | 2004-05-13 | Mizuno Corp | Wood type metallic hollow golf club head and golf club |
JP2006320493A (en) * | 2005-05-18 | 2006-11-30 | Sri Sports Ltd | Golf club head |
-
2009
- 2009-06-29 JP JP2009153807A patent/JP2011005167A/en active Pending
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2010
- 2010-01-06 US US12/652,783 patent/US20100331103A1/en not_active Abandoned
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US1518316A (en) * | 1922-12-14 | 1924-12-09 | Robert W Ellingham | Golf club |
US2171383A (en) * | 1938-10-12 | 1939-08-29 | William L Wettlaufer | Golf club head |
US3466047A (en) * | 1966-10-03 | 1969-09-09 | Frank J Rodia | Golf club having adjustable weights |
US3652094A (en) * | 1969-10-21 | 1972-03-28 | Cecil C Glover | Golf club with adjustable weighting plugs |
US3692306A (en) * | 1971-02-18 | 1972-09-19 | Cecil C Glover | Golf club having integrally formed face and sole plate with weight means |
US4052075A (en) * | 1976-01-08 | 1977-10-04 | Daly C Robert | Golf club |
US4602787A (en) * | 1984-01-11 | 1986-07-29 | Ryobi Limited | Hollow metal golf club head |
US5916042A (en) * | 1995-10-11 | 1999-06-29 | Reimers; Eric W. | Adjustable balance weighting system for golf clubs |
US6089994A (en) * | 1998-09-11 | 2000-07-18 | Sun; Donald J. C. | Golf club head with selective weighting device |
US7108609B2 (en) * | 2003-07-10 | 2006-09-19 | Nike, Inc. | Golf club having a weight positioning system |
US20050148405A1 (en) * | 2003-12-05 | 2005-07-07 | Bridgestone Sports Co., Ltd. | Golf club head |
US20060240907A1 (en) * | 2005-04-25 | 2006-10-26 | Mondher Latiri | Golf club head with adjustable center of mass |
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US7824280B2 (en) * | 2007-11-07 | 2010-11-02 | Sri Sports Limited | Golf club head |
Cited By (67)
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US9504889B2 (en) | 2005-04-21 | 2016-11-29 | Cobra Golf Incorporated | Golf club with multi-component construction |
US9440123B2 (en) | 2005-04-21 | 2016-09-13 | Cobra Golf Incorporated | Golf club head with accessible interior |
US9855474B2 (en) | 2005-04-21 | 2018-01-02 | Cobra Golf Incorporated | Golf club head with accessible interior |
US9616301B2 (en) | 2005-04-21 | 2017-04-11 | Cobra Golf Incorporated | Releasable threaded component for a golf club having a mechanism for preventing over rotation |
US8938871B2 (en) | 2005-04-21 | 2015-01-27 | Cobra Golf Incorporated | Golf club head with high specific-gravity materials |
US8303433B2 (en) * | 2005-04-21 | 2012-11-06 | Cobra Golf Incorporated | Golf club head with moveable insert |
US20100105499A1 (en) * | 2005-04-21 | 2010-04-29 | Acushnet Company | Golf club head with moveable insert |
US9901794B2 (en) | 2005-04-21 | 2018-02-27 | Cobra Golf Incorporated | Golf club head with removable component |
US11819741B2 (en) * | 2010-09-30 | 2023-11-21 | Karsten Manufacturing Corporation | Golf club head and golf club head structures |
US10603555B2 (en) | 2010-12-28 | 2020-03-31 | Taylor Made Golf Company, Inc. | Golf club head |
US10639524B2 (en) | 2010-12-28 | 2020-05-05 | Taylor Made Golf Company, Inc. | Golf club head |
US11148021B2 (en) | 2010-12-28 | 2021-10-19 | Taylor Made Golf Company, Inc. | Golf club head |
US10974102B2 (en) | 2010-12-28 | 2021-04-13 | Taylor Made Golf Company, Inc. | Golf club head |
US11654336B2 (en) | 2010-12-28 | 2023-05-23 | Taylor Made Golf Company, Inc. | Golf club head |
US10905929B2 (en) | 2010-12-28 | 2021-02-02 | Taylor Made Golf Company, Inc. | Golf club head |
US11202943B2 (en) | 2010-12-28 | 2021-12-21 | Taylor Made Golf Company, Inc. | Golf club head |
US11298599B2 (en) | 2010-12-28 | 2022-04-12 | Taylor Made Golf Company, Inc. | Golf club head |
US10434384B2 (en) | 2010-12-28 | 2019-10-08 | Taylor Made Golf Company, Inc. | Golf club head |
US10898764B2 (en) | 2010-12-28 | 2021-01-26 | Taylor Made Golf Company, Inc. | Golf club head |
US20130005501A1 (en) * | 2011-06-30 | 2013-01-03 | Gentry Ferguson | Hollow golf club with high density weights |
US8708838B2 (en) * | 2011-06-30 | 2014-04-29 | Acushnet Company | Hollow golf club with high density weights |
US9682296B1 (en) * | 2012-12-27 | 2017-06-20 | Callaway Golf Company | Golf club head with adjustable weight bar |
US9731175B1 (en) * | 2012-12-27 | 2017-08-15 | Callaway Golf Company | Golf club head with adjustable weight bar |
US8790195B1 (en) * | 2012-12-27 | 2014-07-29 | Callaway Golf Company | Golf club head with adjustable characteristics |
US8968116B1 (en) * | 2012-12-27 | 2015-03-03 | Callaway Golf Company | Golf club head with adjustable characteristics |
US9220957B1 (en) * | 2012-12-27 | 2015-12-29 | Callaway Golf Company | Golf club head with adjustable characteristics |
US20170312593A1 (en) * | 2012-12-27 | 2017-11-02 | Callaway Golf Company | Golf Club Head With Adjustable Weight Bar |
US9636553B1 (en) * | 2012-12-27 | 2017-05-02 | Callaway Golf Company | Golf club head with adjustable weight bar |
US9375618B2 (en) * | 2012-12-27 | 2016-06-28 | Callaway Golf Company | Golf club head with adjustable characteristics |
US9937392B2 (en) * | 2012-12-27 | 2018-04-10 | Callaway Golf Company | Golf club head with adjustable weight bar |
US9968833B2 (en) | 2014-04-25 | 2018-05-15 | Cobra Golf Incorporated | Golf club with adjustable weight assembly |
US9433836B2 (en) | 2014-04-25 | 2016-09-06 | Cobra Golf Incorporated | Golf club with adjustable weight assembly |
US9498686B2 (en) | 2014-04-25 | 2016-11-22 | Cobra Golf Incorporated | Golf club with adjustable weight assembly |
US9238162B2 (en) | 2014-04-25 | 2016-01-19 | Cobra Golf Incorporated | Golf club with adjustable weight assembly |
US9764210B2 (en) | 2014-04-25 | 2017-09-19 | Cobra Golf Incorporated | Golf club head with internal cap |
US10099094B2 (en) * | 2014-05-07 | 2018-10-16 | Acushnet Company | Metal wood club |
US9381410B2 (en) * | 2014-05-07 | 2016-07-05 | Acushnet Company | Metal wood club |
US10376757B2 (en) | 2014-05-07 | 2019-08-13 | Acushnet Company | Metal wood club |
US9700771B2 (en) | 2014-05-07 | 2017-07-11 | Acushnet Company | Metal wood club |
US20150321055A1 (en) * | 2014-05-07 | 2015-11-12 | Acushnet Company | Metal wood club |
US20170296887A1 (en) * | 2014-05-07 | 2017-10-19 | Acushnet Company | Metal wood club |
US20160361613A1 (en) * | 2015-06-09 | 2016-12-15 | Dunlop Sports Co. Ltd. | Golf club head |
US10272301B2 (en) * | 2015-06-09 | 2019-04-30 | Sumitomo Rubber Industries, Ltd. | Golf club head |
US20170050091A1 (en) * | 2015-08-18 | 2017-02-23 | Dunlop Sports Co. Ltd. | Golf club head |
US9802084B2 (en) * | 2015-08-18 | 2017-10-31 | Dunlop Sports Co. Ltd. | Golf club head |
US10556161B2 (en) | 2016-05-25 | 2020-02-11 | Karsten Manufacturing Corporation | Adjustable weight club head |
US11918871B2 (en) | 2016-05-25 | 2024-03-05 | Karsten Manufacturing Corporation | Adjustable weight club head |
US11291892B2 (en) | 2016-05-25 | 2022-04-05 | Karsten Manufacturing Corporation | Adjustable weight club head |
US10864416B2 (en) | 2016-05-25 | 2020-12-15 | Karsten Manufacturing Corporation | Adjustable weight club head |
US20200054926A1 (en) * | 2018-05-17 | 2020-02-20 | Callaway Golf Company | Golf Club Head With Adjustable Center of Gravity |
US10486042B1 (en) * | 2018-05-17 | 2019-11-26 | Callaway Golf Company | Golf club head with adjustable center of gravity |
US10716984B2 (en) * | 2018-05-17 | 2020-07-21 | Callaway Golf Company | Golf club head with adjustable center of gravity |
US11400350B2 (en) | 2018-07-23 | 2022-08-02 | Taylor Made Golf Company, Inc. | Golf club heads |
US10653926B2 (en) * | 2018-07-23 | 2020-05-19 | Taylor Made Golf Company, Inc. | Golf club heads |
US11013965B2 (en) | 2018-07-23 | 2021-05-25 | Taylor Made Golf Company, Inc. | Golf club heads |
US11771963B2 (en) | 2018-07-23 | 2023-10-03 | Taylor Made Golf Company, Inc. | Golf club heads |
US10369437B1 (en) * | 2018-08-20 | 2019-08-06 | Acushnet Company | Wood-type golf club including center of gravity adjustment |
US10646759B2 (en) | 2018-08-20 | 2020-05-12 | Acushnet Company | Wood-type golf club including center of gravity adjustment |
US20220168616A1 (en) * | 2019-07-06 | 2022-06-02 | Jeffrey V Bamber | Golf Clubs Having Weighting System With Movable Weights |
US11266889B2 (en) * | 2019-07-06 | 2022-03-08 | Pelican Golf, Inc. | Golf clubs having weighting system with movable weights |
US11918870B2 (en) * | 2019-07-06 | 2024-03-05 | Pelican Golf, Inc. | Golf clubs having weighting system with movable weights |
US10835791B1 (en) * | 2020-03-02 | 2020-11-17 | Callaway Golf Company | Golf club head with adjustable sole weight |
US11358040B2 (en) * | 2020-03-02 | 2022-06-14 | Callaway Golf Company | Golf club head with adjustable sole weight |
US11083939B1 (en) * | 2020-03-02 | 2021-08-10 | Callaway Golf Company | Golf club head with adjustable sole weight |
US11406881B2 (en) | 2020-12-28 | 2022-08-09 | Taylor Made Golf Company, Inc. | Golf club heads |
US11759685B2 (en) | 2020-12-28 | 2023-09-19 | Taylor Made Golf Company, Inc. | Golf club heads |
US11679313B2 (en) | 2021-09-24 | 2023-06-20 | Acushnet Company | Golf club head |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: BRIDGESTONE SPORTS CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAKAHASHI, HIROSHI;SATO, FUMIAKI;MATSUNAGA, HIDEO;SIGNING DATES FROM 20091216 TO 20091218;REEL/FRAME:023738/0279 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |