JP3017499U - Golf club head - Google Patents

Abstract

(57) [Summary] [Purpose] A golf club head with strong joints and a beautiful appearance. [Structure] After attaching a titanium plate and a copper piece to a wax mold, embedding it in a mold material, dewaxing it into a mold, injecting a molten aluminum alloy, cooling and solidifying it, and then removing the mold material. It is made by integrally molding an alloy, a titanium plate and a copper piece.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention utilizes the lost wax method to form a golf club head formed by integrally molding several kinds of materials, and in particular, an aluminum alloy body is used to tightly close a titanium striking face plate on the front side and a copper piece moved to the rear side on the rear side. The present invention relates to a structure in which each part is firmly joined by the structure of covering and gripping and the components do not fall off even if they are hit.

[0002]

[Prior art]

 In the process of hitting a golf ball with a club, a product (FIG. 1) in which the entire golf club head 10 is made of titanium has been introduced to the market in order to improve the hitting efficiency. This product had the advantage of being lightweight and having a stable center of gravity on impact, but the price was so high that it was not easily purchased by consumers. After that, products such as those shown in Figure 2 appeared in the market. This is one in which the golf club head 10 is made of an aluminum alloy, and one concave hole 101 is provided on the front side thereof, and the titanium striking face plate 20 is fixed to it. This has the advantage that the price can be made lower than that of the conventional golf club head products described above, and at the same time, the center of gravity upon hitting is stable. However, the method of fixing the aluminum alloy golf club head 10 and the titanium striking face plate 20 involves fastening with bolts or rivets or bonding with a strong adhesive. Under the impact of the impact force, the titanium striking face plate 20 loosens and falls off, and improvement of this point has been awaited.

[0003]

[Problems to be solved by the device]

 This invention has a structure in which the aluminum alloy head body tightly covers and holds the titanium striking face plate on the front side and the copper piece provided to place the center of gravity at the rear part of the head. An object of the present invention is to provide a kind of golf club head that does not occur and has a smooth appearance.

[0004]

[Means for Solving the Problems]

 In this invention, a titanium plate and a copper piece are attached to a wax mold, which is then embedded in a mold material to melt the wax to form a mold, and a molten aluminum alloy is poured into the mold to remove the mold after cooling and solidifying. It is a golf club head made by integrally molding an aluminum alloy, a titanium plate and a copper piece.The characteristic is that the wax mold has one front opening and one rear concave hole, and the end face of the front opening is Is used for sticking the titanium plate and copper piece to the front opening and the rear concave hole after heating the titanium plate and the copper piece, and the wax mold of the sticking part is in a molten state to form the titanium plate and the copper plate. The piece is fixed, the ring ridges are melted and the gap between the titanium plate and the inner edge of the front opening is filled up, and the rear concave hole is provided with a plurality of through holes that communicate with the copper piece. It is used to enter and hold the copper piece tightly, and the outer edge and the downward groove of the titanium plate and the copper piece have a plurality of concave grooves. When the molten aluminum alloy is injected after dewaxing, a gap is formed between the front opening and the outer surface of the rear concave hole. Since the cold shrinkage ratio of the aluminum alloy is much higher than the thermal expansion ratio of the titanium plate and the copper piece, the aluminum alloy tightly covers and holds the titanium plate and the copper piece after solidification. It is said that.

[0005]

[Action]

 The present invention provides a golf club head formed by integrally molding a plurality of materials, the golf club head having a front opening and a rear recess formed in a wax mold, and a titanium plate and a copper plate after heating, respectively. The titanium plate and the copper piece are each formed with a slanting surface that slopes outward and downward, and a plurality of concave grooves are provided on the slanting surface. The void formed between the concave hole is filled with wax in advance, and it is applied to the mold material to form a coated wax type, and the molten aluminum alloy is injected into the mold after dewaxing. The groove is also filled, and the solidified aluminum alloy tightly covers and holds the titanium plate and the copper piece. As described above, the golf club head of the present invention has a structure in which three kinds of metal materials such as aluminum, titanium, and copper are integrated, and the connection of each material is strong and the appearance is smooth.

[0006]

【Example】

 As shown in FIG. 3, according to the present invention, a wax mold 1 (see FIGS. 3 and 4) having an external shape similar to that of a golf club head to be molded is provided with a front opening 11, a top through hole 12, and a rear opening. The concave hole 13 is provided, the one-piece convex strip 112 protruding outward is provided on the end edge surface 111 of the front opening 11, and the titanium plate 2 and the copper piece 3 are provided on the end edge surface 111 of the front opening 11 and the rear concave hole 13. Apply heat. At this time, the adhered portion of the wax mold 1 is in a molten state to fix the titanium plate 2 and the copper piece 3, and the ring convex strip 112 is melted to form a gap between the titanium plate 2 and the inner edge of the front opening 11. Supplement S1 (see FIG. 5). Separately, a plurality of holes 131 communicating with the copper piece 3 are formed in the rear concave hole 13 part. In addition, the edge surfaces of the titanium plate 2 and the copper piece 3 are inclined outward and downward and are formed as slopes 21 and 31 having a plurality of recessed grooves 22 and 32. A space S2 is formed with the outer surface of the hole 13 (see FIGS. 5 and 6), and the space S2 is filled with wax W when the titanium plate 2 and the copper piece 3 are bonded by heating. Thus, a precise mold manufacturing process is performed on the wax mold 1 in which the titanium plate 2 and the copper piece 3 are combined, and the mold material coating layer is uniformly applied to the outer surface of the wax mold 1, the titanium plate 2 and the copper piece 3. To form a coating wax type. This mold material coating layer firmly holds the copper piece 3 through the plurality of holes 131. Further, this coated wax mold is heated so that the wax mold 1 is completely melted and discharged. Then, the aluminum alloy solution is injected into the coating layer portion that firmly holds the remaining titanium plate 2 and copper piece 3, that is, the mold. At this time, the aluminum alloy is simultaneously filled in the plurality of recessed grooves 22 of the slope 21 of the titanium plate and the plurality of recesses 32 of the slope 31 of the copper piece 3. The aluminum alloy solution tightly covers and holds the titanium plate 2 and the copper piece 3 when the aluminum alloy solution is cooled and solidified, because the cooling shrinkage ratio is far higher than the thermal expansion ratio of the titanium plate 2 and the copper piece 3. After that, the mold is strongly removed with a water knife to obtain a golf club head in which the aluminum alloy 4 tightly covers and holds the titanium plate 2 and the copper piece 3. Further, the aluminum alloy plate 5 is inserted into the upper through hole 12 (FIG. 7) and subsequently subjected to polishing treatment to obtain a golf club head 6 shown in FIG. 8 which is a finished product of the present invention.

[0007]

[Effect of device]

 The golf club head of the present invention has at least the following advantages. 1. The aluminum alloy 4, the titanium plate 2 and the copper piece 3 are integrally molded, do not require fastening with bolts or rivets, have a very neat appearance, are smooth, and greatly increase the commercial value. 2. When the aluminum alloy solution is poured into the mold, it also fills the concave grooves 22 and 32 of the slopes 21 and 31 of the titanium plate 2 and the copper piece 3. Therefore, if the aluminum alloy solution is cooled and solidified, the titanium plate 2 and the copper are closely packed. The piece 3 can be wrapped and gripped, and when the golf club head molded by this is used, the titanium plate 2 does not fall off even if it receives an impact force due to a hit. 3. Since the copper piece 3 is located at the rear side corner of the golf club head, the center of gravity of the impact is shifted to the rear, and the center of gravity is stabilized during the swing.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a conventional golf club head.

FIG. 2 is a cross-sectional view of another conventional golf club head.

FIG. 3 is an exploded perspective view of a wax pattern, a titanium plate, and a copper piece of the present invention.

FIG. 4 is a perspective view of a wax pattern, a titanium plate and a copper piece of the present invention after being combined.

FIG. 5 is a cross-sectional view taken along the groove of a titanium plate showing a combination of the wax pattern and the titanium plate of the present invention.

FIG. 6 is a cross-sectional view along a copper piece groove showing the combination of the wax pattern and the copper piece of the present invention.

FIG. 7 is a perspective view in which the aluminum alloy plate of the present invention is fixed.

FIG. 8 is a perspective view of the completed device.

FIG. 9 is a cross-sectional view taken along the slope of a titanium plate showing a state where the titanium plate is covered and gripped with the aluminum alloy of the present invention.

FIG. 10 is a cross-sectional view taken along the slope of a copper piece showing a state in which a copper piece is covered and held by the aluminum alloy of the present invention.

FIG. 11 is a partial stereoscopic view of a titanium plate or copper piece of the present invention.

FIG. 12 is a partial cross-sectional view taken along the groove of a titanium plate after completion of the present invention.

[Explanation of symbols]

1 ... Wax type 5 ... Aluminum alloy plate 6 ... Golf club head 11 ... Front opening 12 ... Upper through hole 13 ... Recessed hole 111 ... Edge surface 112 ...
Ring ridge 2 ... Titanium plate 3 ... Copper piece S1 ...
Gap 131 ... Hole 22, 32 ... Recessed groove 21,
31 ... Slope S2 ... Void W ... Wax

Claims (1)

[Scope of utility model registration request] 1. A method in which a titanium plate and a copper piece are attached to a wax mold, embedded in a mold material and then dewaxed to form a mold, a molten aluminum alloy is injected, and the mold material is removed after cooling and solidifying the molten aluminum alloy. It is a golf club head made by integrally molding aluminum alloy, titanium plate and copper piece. Its characteristic is that the wax pattern has one front opening with one convex ridge on the edge surface and one rear concave hole. Is provided, the titanium plate in the front opening, the copper piece in the rear concave hole, respectively, is adhered after heating, the wax mold of the adhered portion is in a molten state to fix the titanium plate, the copper piece, The ring-shaped ridge is melted to fill the gap between the titanium plate and the inner edge of the front opening, and the rear concave hole is provided with a plurality of penetrating holes communicating with the copper piece, and the mold material enters and tightly closes. Holding the copper piece, the titanium plate and the edge surface of the copper piece are inclined outward and downward and have a plurality of grooves, and When a gap is formed with the outer surface of the opening and the rear concave hole, the wax fills this gap, and when the molten aluminum alloy is injected after dewaxing, the aluminum alloy enters the multiple concave grooves on the slopes of the titanium plate and the copper piece. However, since the cooling rate of aluminum alloy is much higher than the thermal expansion rate of titanium plate and copper piece,
The aluminum alloy is a golf club head that is tightly covered and grips the titanium plate and the copper piece after solidification.