JPH0715568Y2 - Golf club - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a golf club, more specifically, a golf club called an iron.

[Prior art]

For example, various golf clubs have been developed that use a synthetic resin composite material such as a carbon fiber-containing resin to expand the sweet spot and lower the center of gravity of the club. Among them, in a golf club called an iron, a sole portion that comes into contact with the ground and a hosel portion to which a shaft is attached are integrally formed of a metal material, and an upper portion of the sole portion has a lower specific gravity than the metal material. It is generally known that the above-mentioned synthetic resin composite material is integrally formed.

[Problems to be solved by the device]

However, the golf club having the above structure, together with the sole portion,
Since the hosel portion is integrally formed of a metal material, the center of gravity of the club is biased to the heel side, and as a result, the sweet spot also tends to be located on the heel side. In order to solve this drawback, the center of gravity can be positioned at an appropriate position in the middle portion by increasing the height of the club from the heel side to the toe side and adding a thickness or incorporating a weight made of a metal material. Since the composite material itself has an extremely low specific gravity as compared with the metal material, there is a limit in increasing the wall thickness and height. In addition, regarding the clubs that use synthetic resin composite materials, the usage ratio of the metal material is specified in the golf rules, so if the sole part and the hosel part are made of metal materials, other weight members should be used. It was virtually impossible to install and the center of gravity could not be corrected. The present invention has been devised to solve the above-mentioned conventional drawbacks, and the purpose thereof is to easily set the center of gravity of the club, and thus the sweet spot, at an arbitrary position in the middle portion. It is to provide a golf club capable of achieving a low center of gravity.

[Means for solving problems]

For this reason, the present invention comprises a synthetic resin composite material, a hosel portion to which a shaft is attached, a main body frame integrally formed with a core member extending from the heel to the toe, and a metal material. A sole member to be attached, a weight member to be attached to the back surface corresponding to the position of the center of gravity of the body frame, and a covering member made of a synthetic resin composite material for covering the body frame to which the weight member is attached with a required club shape. It is characterized by constituting a golf club from.

[Function of the device]

Since the present invention is configured as described above, since the hosel portion is integrally formed with the core member by the synthetic resin composite material having a lower specific gravity than the sole member, the center of gravity of the club, that is, the sweet spot is biased toward the heel side. Can be avoided and it can be located in the middle part of the core member. In addition, since the sole portion of the metal material having a higher specific gravity than the core member is attached to the lower portion of the core member formed of the synthetic resin composite material, the center of gravity of the crag itself can be lowered and the metal of the club can be reduced. The weight of the material is reduced and the weight member can be attached to adjust the sweet spot position arbitrarily. Further, since the weight member is attached to the core member so that its position can be adjusted, it is possible to set the sweet spot at a position according to the player's preference.
Although the weight member is attached so that its position can be adjusted, when the covering member is provided, the movement of the weight member is restricted, and the sweet spot can be maintained at a desired position.

【Example】

The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view showing an outer cover member omitted, and FIG.
FIG. 3 is a front view of the drawing, and FIG. 3 is a vertical sectional view taken along the line III-III of FIG. 2, in which the frame 3 of the golf club 1 called an iron has a carbon fiber-containing resin having a lower specific gravity (about 1.5 to 1.8) than a metal material,
A hosel portion 7 to which the shaft 5 is attached and a core plate 9 as a core member extending from the heel side to the toe side at a required height are integrally formed of a synthetic resin composite material such as a glass wire-containing resin. The hosel part 7 has a mounting hole 7a
However, the shaft 5 is formed so as to be insertable. Also, a plurality of ribs 9a extending vertically and horizontally are integrally formed on the face surface of the core plate 9, and mounting holes 9b are formed on the lower surface of the core plate 9 between the ribs 9a corresponding to the intermediate portion between the heel and the toe. Are formed. Further, two elongated holes 9c extending from the heel toward the toe are formed in the core plate 9 between the ribs 9a corresponding to an intermediate portion between the heel and the toe. The rib 9a extending in the vertical direction is formed so as to be gradually widened downward from the upper end so as to substantially match the loft angle of the required iron. A sole member 11 made of a metal material having a higher specific gravity than that of the frame 3 and extending from the hosel portion 7 to the toe side of the core plate 9 is fixed to the bottom surface of the core plate 9 by a screw 13 inserted through the mounting hole 9b. ing. A weight member 15 made of a metal material having a higher specific gravity than the frame 3 is fixed to the back surface of the core plate 9 by a screw 17 inserted through the elongated hole 9c. The mounting position of the weight member 15 can be arbitrarily adjusted according to the lateral width of the elongated hole 9c. Then, as described above, a synthetic resin composite material is formed on the outer periphery of the frame 3 to which the sole member 11 and the weight member 15 are attached. For example, a carbon fiber-containing resin coating member 19 has a face surface with a loft angle of a required iron. The coating is formed so that Since only the sole member 11 (excluding the weight member 15) located in the lower portion of the frame 3 of the golf club 1 is formed of a metal material having a higher specific gravity than the frame 3, the club has a low center of gravity and is good. A feeling of swinging out is obtained. Further, unlike the conventional case, the hosel portion 7 is formed of the carbon fiber-containing resin having a lower specific gravity than the sole member 11, so that the center of gravity of the club, and hence the sweet spot, is prevented from being biased toward the heel side, and the lateral side of the core plate 9 is avoided. It can be located in the middle of the direction. Further, since the usage rate of the metal material for the entire club is low, a weight member 15 for setting and adjusting the sweet spot of the club can be particularly provided, and the sweet spot is provided at a position according to the player's preference. It is possible to make the golf club 1.
In connection with the above action, since the mounting position of the weight member 15 with respect to the core plate 9 can be arbitrarily adjusted according to the lateral width of the elongated hole 9c, the sweet spot can be easily changed to suit the player's preference. The golf club 1 can be used. The above description refers to the sole member with respect to the bottom surface of the core plate 9.
Although 11 is screwed, as shown in FIG. 4, a dovetail groove 41 is provided on either the bottom surface of the core plate 9 or the top surface of the sole member 11 (in FIG. 4, the dovetail groove is provided on the bottom surface of the core plate 9). And the engaging portion 43 is provided on the opposing upper surface of the sole member 11 or the lower surface of the core plate 9,
The core plate 9 is formed by inserting the engaging portion 43 into the dovetail groove 41.
The sole member 11 may be fixed to the bottom surface. Further, in the above description, the weight member 15 is assumed to be movable in the horizontal direction according to the width of the elongated hole 9c, but the elongated hole is provided in the vertical direction so that the center of gravity of the club can be adjusted in the vertical direction. It may be. In this case, the center of gravity of the club itself can be further lowered, and the trajectory of the ball can be increased.

Therefore, the present invention provides a golf club that can easily set the center of gravity of the club, and thus the sweet spot, at an arbitrary position in the middle portion, and can achieve a low center of gravity. It is possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outer cover member omitted, and FIG.
FIG. 3 is a front view of the drawing, FIG. 3 is a vertical sectional view taken along the line III-III of FIG. 2, and FIG. 4 is a vertical sectional view showing a modified embodiment of the present invention. 1 is a golf club, 3 is a body frame, 5 is a shaft,
7 is a hosel part, 9 is a core plate as a core member, 11
Is a sole member, and 15 is a weight member.

Claims (1)

[Scope of utility model registration request] 1. A main body frame integrally formed with a hosel portion to which a shaft is attached and a core member extending from the heel to the toe, which is made of a synthetic resin composite material; and a metal material, which is attached to a lower surface of the main body frame. A sole member, a weight member attached to the back surface corresponding to the position of the center of gravity of the main body frame, and a covering member made of a synthetic resin composite material for covering the main body frame to which the weight member is attached with a required club shape, A golf club characterized by comprising.