JP2009240653A - Golf club head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club head provided with a head part of an outer shell structure which reduces a mass of a shaft part and changes a center of gravity position to any position by the shaft part itself moving. <P>SOLUTION: A golf club head is provided with a mechanism which can rotate a mass body 5 in a propeller shape without contacting a crown part 2, a side part 3, and a sole part 4 inside a head part 1. The mass body of the propeller shape has a shaft part 6 and the shaft part 6 links to an outside of the head part 1 through a penetrating groove 8 provided on a rail 7 and joins a handle part 9 operable from outside the head part 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a golf club provided with a head portion having a metal outer shell structure in which the inside of the head portion is hollow and the outer shell is made of a metal material such as titanium, titanium alloy, and stainless steel.

  In order to control the position of the center of gravity of a golf club head, it is known that a weight part is fixedly attached to the outside or inside of the head, and that the weight part can be replaced or its position can be changed. ing.

  In JP-A-2005-145751, a cylindrical weight part made of two or more kinds of materials having different specific gravities is attached to a sole portion, and the center of gravity of the head is rotated by fixing and releasing the weight part. A mechanism for varying the position is described.

  In Japanese Patent Application No. 2006-518629, a weight positioning system includes a weight and a support, and the weight is independently movable along the support so as to change the position of the center of gravity in the first direction; and A mechanism is described in which the weight can be independently moved around the support so as to change the position of the center of gravity in the second direction.

JP-A-2005-145751 JP 2006-518629 A

  In the invention described in Japanese Patent Application Laid-Open No. 2005-145751, the cylindrical weight parts made of two or more materials having different specific gravities are limited to the rotation at the center portion of the sole. However, there is a problem that the mass cannot be concentrated only at the tip of the rotating body, and the movable range of the center of gravity is narrow.

  Further, in the invention described in Japanese Patent Application No. 2006-518629, a certain degree of rotation is possible by the wings installed on the central axis, but since the threaded portion is processed on the central axis, it is necessary to have a certain thickness. In order to use the mass there, there was a problem that the weight of the wing had to be relatively light. In addition, since the position of the central axis is fixed, there is a problem that the movable range of the center of gravity is narrow.

  Accordingly, an object of the present invention is a golf club provided with the head portion of the outer shell structure described above, which reduces the mass of the shaft portion and allows the shaft portion itself to move so that the center of gravity position can be set at any position. It is possible to change.

  Accordingly, an object of the present invention is a golf club provided with the head portion having the outer shell structure, wherein the crown portion (2), the side portion (3), and the sole portion (4) are provided inside the head portion (1). The propeller-like mass body (5) has a mechanism capable of rotating without being in contact with the propeller-like mass body, the propeller-like mass body has a shaft portion (6), and the shaft portion (6) is provided on the rail (7). The golf club head is characterized by being connected to the outside of the head portion (1) through the formed through groove (8) and joined to the handle portion (9) operable from the outside of the head portion (1). The propeller-like mass body (5) is not only extending substantially parallel to the horizontal plane but also having an angle with respect to the horizontal plane due to movement of the shaft portion.

  As described above, in the present invention, the propeller-like mass body can be moved along the rail, and further, at that position, the rotation can be performed. A golf club head suitable for a golfer can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  1 and 2 show a wood type golf club head made of a titanium alloy having a hollow structure. The sole portion is provided with a rail having a width of 10 mm and a length of 30 mm in the toe heel direction, and the handle portion can be moved along a through groove having a width of 5 mm provided on the bottom surface of the rail (FIG. 3). ). The handle is made of an aluminum alloy with a diameter of 8 mm and a thickness of 2 mm. The handle has an aluminum alloy shaft with a diameter of 4 mm and a length of 10 mm, and the handle is 5 mm wide and 1 mm thick in a direction perpendicular to the shaft. A propeller-like mass body made of an aluminum alloy is joined and integrated into a T-shape. Further, a tungsten alloy having a weight of 5 g joined by an arbitrary method is joined to one end of the propeller-like mass body.

  The material and length of the propeller-like mass body can be changed according to the set mass of the head and the size inside the head, and can be joined in an L shape instead of a T shape.

  In the above structure, the handle portion can be moved along the through groove, and can be rotated at any position, and the orientation of the propeller-like mass body can be arbitrarily changed. It has become. The handle portion is provided with a screw hole portion for fixing, and can be screwed by two through screw hole portions provided at both ends of the through groove (FIG. 4).

  FIG. 5 shows a titanium alloy wood type golf club head having a hollow structure with different rail directions. The sole part is provided with a rail having a width of 10 mm and a length of 50 mm in the face-back direction, and the handle portion is movable along a through-groove having a width of 5 mm provided on the bottom surface of the rail ( FIG. 3). The handle is made of an aluminum alloy with a diameter of 8 mm and a thickness of 2 mm. The handle has an aluminum alloy shaft with a diameter of 4 mm and a length of 10 mm, and the handle is 5 mm wide and 1 mm thick in a direction perpendicular to the shaft. A propeller-like mass body made of aluminum alloy is joined and integrated. Further, a tungsten alloy having a weight of 5 g joined by an arbitrary method is joined to the tip of the propeller-like mass body.

  The material and length of the propeller-like mass body can be changed according to the set mass of the head and the size inside the head, and can be joined in an L shape instead of a T shape.

  In the above structure, the handle portion can be moved along the through groove, and can be rotated at any position, and the orientation of the propeller-like mass body can be arbitrarily changed. It has become. The handle portion is provided with a screw hole portion for fixing, and can be screwed by two through screw hole portions provided at both ends of the through groove (FIG. 4).

  In this case, the propeller-like mass body is substantially parallel to the horizontal plane when the handle portion is positioned at the sole portion, but when the handle portion is moved rearward, the propeller-like mass body is relative to the horizontal plane. In this state, rotation is possible, and not only the head toe heel direction but also the center of gravity of the head in the vertical direction is variable.

Cross-sectional schematic view of golf club head of the present invention Top view of golf club head of the present invention Enlarged view of rail bottom surface of golf club head of the present invention Enlarged view of the handle portion of the golf club head of the present invention Cross-sectional schematic view of golf club head of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Head part 2 Crown part 3 Side part 4 Sole part 5a Mass body 5b High specific gravity raw material 6 Shaft part 7 Rail 8 Through groove 9 Handle part 10a Rail part fixing screw hole 10b Handle part fixing screw hole 11 Fixing screw

Claims (8)

A golf club having a head portion (1) having an outer shell structure, wherein the propeller is not in contact with the crown portion (2), the side portion (3) and the sole portion (4) inside the head portion (1). The mass body (5) includes a rotatable mechanism, the propeller mass body has a shaft portion (6), and the shaft portion (6) is a through groove (8) provided in the rail (7). ) To the outside of the head portion (1) and joined to the handle portion (9) operable from the outside of the head portion (1). A golf club having a head portion (1) having the outer shell structure, wherein the rail (7) extends in a toe heel direction of a sole portion (4), and a handle portion (9) is an arbitrary portion of the rail (7). 2. The golf club head according to claim 1, wherein the golf club head can be fixed at the position and is fixed by rotating the handle portion (9) in an arbitrary direction at the position. A golf club having a head portion (1) having the outer shell structure, wherein the rail (7) extends in a face-back direction of a sole portion (4), and a handle portion (9) is a rail (7). The golf club head according to claim 1, wherein the golf club head can be fixed at any position and is fixed by rotating the handle portion (9) in any direction at the position. A golf club having a head portion (1) having the outer shell structure, wherein the rail (7) extends in a toe heel direction of a side portion (3), and a handle portion (9) is an arbitrary portion of the rail (7). 2. The golf club head according to claim 1, wherein the golf club head can be fixed at the position and is fixed by rotating the handle portion (9) in an arbitrary direction at the position. A golf club having a head portion (1) having the outer shell structure, wherein the rail (7) extends in the face-back direction of the sole portion (4) and further to the head rear portion of the side portion (3). The handle portion (9) can be fixed at an arbitrary position of the rail (7), and the handle portion (9) is rotated and fixed at an arbitrary direction at the position. Golf club head. A golf club having a head portion (1) having the outer shell structure, wherein a mass body having a specific gravity greater than that of a main body (5a) of the propeller-like mass body at a tip portion of the propeller-like mass body (5) ( 6. The golf club head according to claim 1, further comprising 5b). A golf club having a head portion (1) having an outer shell structure, wherein the propeller-shaped mass body (5) extends substantially parallel to a horizontal plane. The golf club head according to claim 6. The golf club having the outer shell head (1), wherein the propeller-shaped mass (5) has an angle with respect to a horizontal plane. 6. The golf club head according to 6.

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