JP5736402B2 - Integrally molded golf club - Google Patents

Description

  The present invention relates to a golf club, and more particularly, to an integrally molded golf club.

  In general, golf courses are scenic and rich in nature, so golf enthusiasts can feel as if they are playing in the great outdoors, and playing golf requires a lot of momentum. In addition, the atmosphere during play is relaxed and there is no limit on the number of players, so this is the best sport for deepening friendship with friends. When hitting the ball, the player can select the most suitable golf club according to the terrain of the course and how to hit. Golf clubs are classified into three types: drivers, irons, and putters. Among them, the driver is a dedicated club used for hitting the first hit, and since the driver has a large club head and suitable elasticity, the player can easily predict the hit ball distance and the falling point. The iron is used for launching from a bunker or placing it on the green because the hit ball flies like drawing radiation, and the putter is used for aiming a hole on the green.

  A golf club is generally constituted by a combination of a shaft and a club head, and the club head is roughly divided into a composite material made of wood, stainless steel, metal alloy casting and injection molding. The shaft is made of a carbon fiber material, a metal alloy, or the like, and even if manufactured by any material, it is generally manufactured by fitting a conventional shaft and a club head and then bonding them. However, a general wood molded, carbon fiber hot-press molded or injection molded club head was weaker in strength, hardness and toughness than a metal alloy or stainless steel club head of the same thickness.

  The conventional club head has an appropriate conical surface that is gradually reduced from the bottom to the top by extending the length of the handle in order to increase the bonding strength with the shaft, and the insertion hole at the center of the handle is Although it is formed deep inside the club head, considering the low strength and hardness of the club head handle, a synthetic thread is wrapped around the conventional joint between the club head and shaft to join the mating part. It is common to increase the strength.

  However, since the general bond strength is determined according to the bond strength of the adhesive and the interface bond strength between the club head material and the shaft material, the hardness of the club head, the shaft and the synthetic yarn varies depending on the material. Different. Therefore, the fitting part between the club head and the handle part is substantially separated, and the stress tends to concentrate. For this reason, when the ball is hit, there is a case where the fitting portion is excessively loaded and the fitting portion is deformed or broken in the worst case. As can be seen from the above, when an impact is applied to the club head when a ball is hit, a torsional force is transmitted from the club head to the shaft. However, since the shaft and the handle are bonded (generally, there is a limit to strengthening the strength by wrapping synthetic yarn), the torsional force applied instantaneously generates a club head twist angle, If the direction in which the ball flies becomes unstable and the torsional force of the club head becomes greater than the adhesive force with the shaft, the club head and the shaft may loosen and the golf club may be damaged. Therefore, an object of the present invention is to provide an integrally molded golf club that does not have the disadvantages of conventional golf clubs.

  In order to solve the above-mentioned problems, according to a first aspect of the present invention, there is provided an integrally molded golf club having a club head and a shaft, wherein the club head has a cast club head member. The club head member has a forged club head surface, the shaft is formed by drawing the cast club head member, and the shaft and the club head are integrally formed. An integral molded golf club is provided.

  A throttle part is formed between the club head and the shaft, and the throttle part and the club head, and the throttle part and the shaft are integrally formed and connected without contact. It is preferable.

  The outer wall of the throttle part preferably has a smooth surface.

  It is preferable that the club head member of the club head has a club head hollow portion, and the shaft has a shaft hollow portion.

  The club head hollow portion of the club head and the shaft hollow portion of the shaft are preferably integrally formed and communicated.

  Preferably, the club head member of the club head has a club head hollow portion, and the shaft has a shaft solid portion.

  The surface of the club head is preferably different in roughness from the surface of the shaft.

  It is preferable that the restriction performed when the shaft and the club head are integrally formed is a PG pipe restriction, an SB pipe restriction, a DB pipe restriction, a BB pipe restriction, or a CB pipe restriction.

  The club head and the shaft are preferably made of duplex stainless steel.

  Since the club head and the shaft are integrally formed by casting, forging, and drawing, the entire structure of the present invention-type golf club has a uniform and high strength. Is much higher than the strength of the prior art in which the interface between two objects is bonded by an adhesive. Therefore, the integrally molded structure prevents stress from concentrating or loosening at the joint between the shaft and the club head, and receives the torsion when swinging the entire structure. Can be extended.

  The integrally molded golf club of the present invention has a very large impact on the club head when swinging and hitting the ball, and a torsional force and an instantaneous twist angle are generated. The strength that the club head and shaft are connected to can be obtained with high strength, and the force that can be withstood is much greater than the torsional force generated on the clubhead. It can be prevented from loosening or breaking. Therefore, the present invention has a good hit ball stability and can fly the hit ball while stabilizing the hit ball further to stabilize the ball flying direction.

FIG. 1 is a perspective view showing an integrally molded golf club according to the first embodiment of the present invention. FIG. 2 is a partially enlarged view showing the club head of the integrally molded golf club according to the first embodiment of the present invention. FIG. 3 is a partial cross-sectional view showing the club head of the integrally molded golf club according to the first embodiment of the present invention. FIG. 4 is a partial cross-sectional view showing a club head of an integrally molded golf club according to the second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

(First embodiment)
Please refer to FIG. FIG. 1 is a perspective view showing an integrally molded golf club according to the first embodiment of the present invention. FIG. 2 is a partially enlarged view showing the club head of the integrally molded golf club according to the first embodiment of the present invention. FIG. 3 is a partial cross-sectional view showing the club head of the integrally molded golf club according to the first embodiment of the present invention.

  As shown in FIGS. 1 to 3, the integrally molded golf club 100 according to the first embodiment of the present invention includes at least a club head 1 and a shaft 2. The club head 1 has a club head member 11 formed by casting. The club head member 11 has a forged club head surface 111. In the first embodiment, the cast club head member 11 is forged to form a club head surface 111. A cast club head member 11 is drawn on the shaft 2. The shaft 2 includes a shaft member 21 formed integrally with the club head 1, and a grip 211 is provided at a rear end portion of the shaft member 21.

  A drawn portion 3 is provided between the club head 1 and the shaft 2, and a smooth surface is formed on the outer wall of the drawn portion 3. This smooth surface is a smooth surface connected without contact. That is, the aperture 3 and the club head 1 are connected without contact, and the aperture 3 and the shaft 2 are also connected without contact. This club head surface 111 is used as a contact surface of a hit ball. In the first embodiment, the club head member 11 of the club head 1 has a club head hollow portion 12, and the shaft member 21 of the shaft 2 has a shaft hollow portion 22. The club head hollow portion 12 of the club head 1 and the shaft hollow portion 22 of the shaft 2 are integrally formed and communicated.

  The diaphragm system of the first embodiment will be described below. A blank used for the drawing of the shaft 2 is connected to the club head 1 that has been cast and forged, and the blank of the shaft 2 is drawn by a mold (drawing mold). The shaft 2 having the shaft hollow portion 22 is formed by a mandrel.

  In the first embodiment, a weight member 13 is attached in the club head hollow portion 12 during the manufacturing process. The weight member 13 is firmly engaged in the club head member 11.

(Second Embodiment)
Please refer to FIG. FIG. 4 is a partial cross-sectional view showing an integrally molded golf club according to the second embodiment of the present invention. As shown in FIG. 4, the integrally molded golf club according to the second embodiment of the present invention is an integrally molded golf club 100 a manufactured according to the standards and as required. The manufacturing method of the integrally molded golf club 100a is similar to the manufacturing method of the integrally molded golf club 100 according to the first embodiment, except that the shaft member 21a of the shaft 2a has a shaft solid portion 22a. Specifically, the shaft 2a has a solid shaft portion 22a in which a blank is drawn in the drawing process.

In the manufacture of the above-described golf clubs 100 and 100a, the club head member and the shaft member are first cast and then forged, and then formed by a drawing method. Depending on the shape and dimensions of the shaft, the draw forming operation is PG (Plane Butted) tube forming operation, SB (Single Butted) tube forming operation, DB (Double Butted) tube forming operation, BB (Bulge Butted) tube forming operation or CB (Contracted Butted) It is divided into tube forming operations and the like.

The integrally formed golf clubs 100 and 100a have different drawing processes depending on differences in dimensions, standards, and external shapes. For example, when a golf club shaft has only one outer diameter and thickness, Since it can be completed in only one step in the drawing process, it is applied to PG pipe work. The golf club shaft can be completed in one step in the drawing process of the finished product, but since it is a shaft having two or more thicknesses (in principle, the outer diameter is the same, the thickness is Is applied to the SB tube forming operation. The drawing of the finished product of the golf club shaft cannot be completed without going through the two processes of “thickness formation” and “outer diameter formation” (first, after processing the thickness of the pipe member Applicable to DB tube forming work). In the axial fabrication process of a golf club shaft, for the front and rear of the shape of the mandrel it does not match (is less large rear front), spread pipe diameter of the shaft when performing Haizai work, the BB pipe forming work Apply. When the outer diameter of the tube member of the golf club shaft is partially reduced and the thickness is still maintained, it is applied to a CB tube forming operation.

  The club head member and the shaft member of the integrally formed golf clubs 100 and 100a according to an embodiment of the present invention are made of duplex stainless steel (DSS). The stainless steel of this duplex stainless steel is a standard steel type 2205 (ie, 22% chromium and 5% nickel), and has advantages such as high strength and high corrosion resistance. Suitable for 100, 100a manufacturing. Of course, for example, other metals such as stainless steel, chrome molybdenum steel, carbon steel chrome plating, etc. may be used, but only the optimum embodiment is shown here.

  While the preferred embodiments of the present invention have been disclosed above, as may be appreciated by those skilled in the art, they are not intended to limit the invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the claims of the present invention should be construed broadly including such changes and modifications.

DESCRIPTION OF SYMBOLS 1 Club head 1a Club head 2 Shaft 2a Shaft 3 Restriction part 11 Club head member 11a Club head member 12 Club head hollow part 12a Club head hollow part 13 Weight member 21 Shaft member 21a Shaft member 22 Shaft hollow part 22a Shaft solid part 100 Golf club 100a Golf club 111 Club head surface 211 Grip

Claims (8)

An integrally molded golf club having a club head and a shaft,
The club head has a cast club head member;
The club head member has a forged club head surface;
The shaft is formed by drawing the cast club head member;
The shaft and the club head are integrally formed,
One-piece golf club. A throttle part is formed between the club head and the shaft,
Between the throttle part and the club head, and between the throttle part and the shaft are integrally formed and connected in a contactless manner,
The integrally molded golf club according to claim 1. The outer wall of the throttle part has a smooth surface,
The integrally molded golf club according to claim 2. The club head member of the club head has a club head hollow portion,
The shaft has a shaft hollow portion,
The integrally molded golf club according to claim 1. The club head hollow portion of the club head and the shaft hollow portion of the shaft are integrally formed and communicated,
The integrally molded golf club according to claim 4. The club head member of the club head has a club head hollow portion,
The shaft has a shaft solid part,
The integrally molded golf club according to claim 1. The shafts TMG, PG tube, SB tube, and wherein the DB tube, a BB tube or CB tube, integrally molded type golf club according to claim 1.   2. The integrally molded golf club according to claim 1, wherein the club head and the shaft are made of duplex stainless steel.

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