JP2005224384A - Joint structure of face plate of golf club head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure in which a face plate and a head body is so constituted that there is the degree of freedom of a relativelty large tolerance between the face plate and a recessed cut out groove by properly positioning the face plate inside of the recessed cut out groove, the positioning of assembling in welding can be surely and easily done, the strength of joint is enhanced, further a manufacturing cost can be suppressed low. <P>SOLUTION: The club head is constituted of a head body, a face plate, and a plurality of positioning boss bodies. The recessed cut out groove is formed in the front surface of the head body. The plurality of positioning boss bodies are arranged so as to project inside of the recessed cut out groove of the head body or to the outer periphery of the face plate, the positioning boss bodies is constituted so as to be able to elastically deformably engage with the inner peripheral rim of the recessed cut out groove or the outer peripheral rim of the face plate and joint the face plate and the head body, when the face plate is fitted into the recessed cut out groove of the head body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for joining face plates of a golf club head. The present invention relates to a coupling structure for positioning an assembly in a process.

  A conventional golf club head face plate coupling structure includes a metal head frame and a face plate. A recessed groove is provided at a position where the head frame is coupled to the face plate, a shoulder surface is formed in the recessed groove, a welding material can be placed on the shoulder surface, and the face plate is placed on the shoulder surface. It can be fitted. Further, by deforming the protruding portion on the inner peripheral edge of the shoulder surface by pressure, the welding material is filled in the gap formed by the face plate, the shoulder surface and the protruding portion. The welding material is made of metal powder, its melting point is relatively lower than that of the head frame and face plate, and the head frame and face plate that have been re-fitted are used in a vacuum furnace or a high-temperature furnace protected by an inert gas. Heat inside and heat, the heating temperature must be higher than the melting point of the welding material and lower than the melting point of the head frame and face plate, then the welding material is melted and further utilizing the capillary action After filling the minute gap between the head frame and the face plate and cooling, it is possible to obtain a finished product of the head that can be tightly coupled to show no trace of welding from the appearance. (For example, see Patent Document 1).

In addition, as a conventional golf club head face plate coupling structure, after completing the hard brazing by the same coupling structure as the above coupling structure, the coupling between the face plate and the head frame body is again performed from the outer surface of the head frame body. General welding (for example, tungsten inert gas arc welding) is performed along the surface, and finally surface polishing and buffing are performed on the outer surface of the head frame so that the strength of the bond can be further secured by external welding. (For example, refer to Patent Document 2).
Republic of China notification number 327606 Republic of China Notification No. 469144

  In the conventional golf club head face plate coupling structure as described above, only a limited amount of welding material can be accommodated in the gap formed by the face plate, the shoulder surface and the protrusion. A part of the welding material is formed by filling the minute gap between the inner peripheral edge of the recessed groove and the outer peripheral edge of the face plate, so that it is surrounded by the face plate, the shoulder surface, and the protruding portion. Because of the lack of welding material, a local cavity is formed. Therefore, when the face plate receives the stress of the hit ball and undergoes deformation due to elasticity, a crack is extremely likely to occur at the joint position of each hard brazing. Furthermore, by precisely controlling the gap between the face plate and the entire periphery of the recessed groove in the head frame body, it is ensured that the hard brazing material fills the gap using capillary action. Therefore, no matter what manufacturing process (for example, precision casting method) is used to manufacture the head frame and the face plate, the head frame and the face plate are additionally machined using a machine tool. By doing so, the degree of freedom of tolerance between the two must be precisely controlled, which increases the time of the manufacturing process and increases the manufacturing cost, which is unsuitable for mass production.

  In addition, in the conventional golf club head face plate coupling structure as described above, the degree of freedom of tolerance between the head frame and the face plate must be precisely controlled. Since it becomes longer and the manufacturing cost becomes higher, there is a problem that it is not suitable for mass production. As described above, it is necessary to further improve the connecting structure of the face plates of the conventional golf club head as described above.

  The present invention has been invented in view of such problems. The object of the present invention is to provide a plurality of positioning protrusions on the outer peripheral edge of the face plate so that the face plate is provided on the head body. When inserted into the recessed groove, the positioning protrusion can be positioned by being locked to the inner peripheral edge of the recessed groove so as to be plastically deformable, and there is a relatively large tolerance between the face plate and the recessed groove. Provided is a golf club head face plate coupling structure that can easily be positioned during welding, increase the strength of the coupling, and reduce the manufacturing cost. It is what.

  The first object of the present invention is to position and connect the face plate to the inside of the recessed groove of the head body by providing a plurality of positioning protrusions on the outer peripheral edge of the face plate. It is an object of the present invention to provide a golf club head face plate coupling structure that can surely simplify assembly positioning, increase the coupling strength, and reduce the manufacturing cost.

  The second object of the present invention is to position and connect the face plate inside the recessed groove of the head body using a plurality of positioning protrusions, and between the positioning protrusion and the upper surface of the face plate, a filler is provided. Since the space is formed in advance, a sufficient welding material can be filled, and therefore, it is an object of the present invention to provide a golf club head face plate coupling structure capable of increasing the welding strength.

  A third object of the present invention is to position and connect the face plate to the inside of the recessed groove of the head body using a plurality of positioning protrusions, and another inclined surface is formed on the bottom of the positioning protrusion. Therefore, an object of the present invention is to provide a golf club head face plate coupling structure that can be easily locked and positioned.

  The fourth object of the present invention is to provide the head main body with a recessed groove and a plurality of positioning protrusions, and by providing the positioning protrusion inside the recessed groove, the assembly positioning during welding can be reliably simplified. An object of the present invention is to provide a golf club head face plate coupling structure that can increase the strength of the coupling and keep the manufacturing cost low.

In order to achieve the above object, a golf club head face plate coupling structure according to the present invention is as follows. That is,
The head main body, the face plate, and a plurality of positioning protrusions are included. A concave groove is formed on the front surface of the head body. A face for hitting a golf ball is formed in front of the face plate. The plurality of positioning protrusions are provided so as to protrude from the outer peripheral edge of the face plate. When the face plate is inserted into the recessed groove of the head body, the positioning projection can be engaged with the inner peripheral edge of the recessed groove so as to be plastically deformable, and the face plate is suitable for the inside of the recessed groove. The positioning of the assembly in the subsequent welding manufacturing process can be simplified.

  In the golf club head face plate coupling structure according to the present invention, a stepped portion is provided in the recessed groove of the head body, and the face plate can be supported by the stepped portion. Further, the positioning protrusion may be formed as a degree of freedom of plastic deformation by being formed to protrude excessively from 0.5 mm to 0.2 mm corresponding to the inner peripheral edge of the recessed groove. it can. Further, a cushion space may be formed between each of the two positioning protrusions, and the proportionality between the positioning protrusion and the width of the cushion space may be formed to be between 1: 9 and 9: 1. . Further, the positioning protrusion of the face plate is formed with an inclined surface at the bottom, so that the positioning protrusion can be easily locked inside the recessed groove. In addition, a filler space may be formed in advance between the positioning protrusion and the face. Further, the positioning protrusion can be selected from the shapes of a rectangular column, a stepped column, a semicircular column, and a triangular column. The welding manufacturing process can be selected from manual welding and automated welding. For example, it can be selected from hard brazing, tungsten inert gas arc welding, high energy welding, laser beam welding, electron beam welding, and plasma arc welding.

  The golf club head face plate coupling structure according to the present invention includes a head body, a face plate, and a plurality of positioning protrusions. A concave groove is formed on the front surface of the head body. A face for hitting a golf ball is formed in front of the face plate. The plurality of positioning protrusions are provided so as to protrude from the inner peripheral edge of the recessed groove of the head body. When the face plate is inserted into the recessed groove of the head body, the positioning projection can be plastically deformed and locked to the outer peripheral edge of the recessed groove of the head body, and the face plate can be connected to the recessed groove. Proper positioning within can simplify the positioning of the assembly in the subsequent weld manufacturing process.

  According to the golf club head face plate coupling structure of the present invention, the face plate is positioned inside the recessed groove of the head body by providing a plurality of positioning protrusions on the outer peripheral edge of the face plate. As a result, the assembly positioning during welding can be reliably simplified, the strength of the coupling can be increased, and the manufacturing cost can be kept low.

  According to the golf club head face plate coupling structure of the present invention, the face plate is positioned and coupled to the inside of the recessed groove of the head body using a plurality of positioning projections, and the positioning projection and the face plate are connected. Since a filler space is formed in advance between the upper surfaces, a sufficient amount of welding material can be filled, so that there is an advantage that the welding strength can be increased.

  According to the coupling structure of the face plate of the golf club head of the present invention, the face plate is positioned and coupled inside the recessed groove of the head body using a plurality of positioning protrusions, In addition, since an inclined surface is formed, there is an advantage that locking and positioning are simplified.

  According to the golf club head face plate coupling structure of the present invention, the head body is provided with a recessed groove and a plurality of positioning protrusions, and the positioning protrusion is provided inside the recessed groove, thereby assembling at the time of welding. There are advantages that the positioning of the substrate can be surely simplified, the strength of the coupling can be increased, and the manufacturing cost can be kept low.

  Embodiments of the present invention will be described below with reference to the drawings.

  Referring to FIGS. 1 to 6, the golf club head face plate coupling structure according to the first embodiment of the present invention includes a head body 10, a face plate 20, and a plurality of positioning protrusions 22. The head main body 10 is made of a material such as stainless steel, carbon steel, alloy steel, titanium alloy, and the like. A concave groove 11 is formed on the front surface of the head main body 10, and the inner peripheral edge of the concave groove 11 faces inward. A stepped portion 12 is provided so as to protrude. The recessed groove 11 can be formed, for example, in an opening shape or a sealed shape. The face plate 20 is preferably made of a material having an ability of elastic deformation such as titanium, titanium alloy or stainless steel. A face 21 is formed in front of the face plate 20, and the face 21 can be used for hitting a golf ball. A plurality of positioning protrusions are provided on the outer peripheral edge of the face plate 20 so as to protrude, and a cushion space 23 is formed between each of the two positioning protrusions 22. The positioning protrusion of the first embodiment of the present invention is preferably formed in a rectangular column shape, and is formed so as to extend from the bottom surface of the face plate 20 toward the upper surface (face 21). A filler space 24 is preferably formed between them in advance.

  Referring to FIGS. 2 to 7, the widths w1, w2 and quantity of the positioning protrusion 22 and the cushion space 23 can be selected according to the demand of the product, but the width proportional w1: w2 is preferably It is formed to maintain between 9: 1 and 1: 9. Further, the thickness d1 from which the positioning protrusion 22 protrudes is preferably formed to be larger than the predetermined distance d2 between the recessed groove 11 and the face plate 20. In other words, with respect to the single positioning protrusion 22, the positioning protrusion 22 is formed to protrude excessively with a thickness of about 0.5 mm corresponding to the inner peripheral edge of the recessed groove 11, and preferably 0.3 mm. And the best is 0.2mm. The excessively increased wall thickness can be used as the degree of freedom of plastic deformation in the subsequent manufacturing process. Thus, as shown in FIG. 5, when the face plate 20 corresponds to the recessed groove 11 of the head body 10, the positioning protrusion 22 of the face plate 20 is formed to slightly protrude from the recessed groove 11. Therefore, in the present invention, when the face plate 20 is pressed tightly into the recess groove 11 using an appropriate pressing body (not shown), each positioning protrusion 22 is locked from the bottom portion to form the recess. The face plate 20 is formed so as to be tightly coupled and positioned inside the recessed groove 11 by entering the inner peripheral edge of the groove 11 and causing plastic deformation (or permanent deformation) of 0.5 mm to 0.2 mm. The face plate 20 can be supported by the stepped portion 12. Thus, the relative assembling relationship between the face plate 20 and the head body 10 can be maintained without using an extra fixture or machine tool in the present invention. That is, since the assembly positioning in the subsequent welding manufacturing process can be simplified, the golf club head can be applied to various welding manufacturing processes, such as manual welding and automated welding. It is a line mechanism. The welding can be selected from hard brazing, tungsten inert gas arc welding and various high energy weldings, such as laser beam welding, electron beam welding and plasma arc welding.

  In addition, by providing the positioning protrusion 22, in the present invention, the face plate 20 and the recessed groove 11 are formed to have a relatively large tolerance degree of freedom. Since the requirements regarding accuracy can be kept low enough, in the present invention, any manufacturing method (for example, precision casting, forging, pressing, or a composite manufacturing process using different materials) is used to perform an excessive cutting process. The ratio can be reduced relatively.

  For example, when a manufacturing process for brazing is selected, in the present invention, the positioning projection 22 is positioned in the recessed groove 11 in the face plate 20 and then a brazing welding material (not shown) is used as, for example, a filler. By filling the space 24 and the cushion space 23 (see FIG. 6) or by directly leaving the space above the filler space 24, a vacuum is used in this way, or an inert gas is filled. By heating inside the high-temperature furnace, the brazing welding material is made to penetrate into the gap between the face plate 20, the recessed groove 11 and the stepped portion 12 sufficiently downward. . Comparing that the brazing welding materials of the publications No. 327606 and No. 469144 in the prior art form a filling with capillaries from the shoulder upward, in the present invention Without leaving the welding material in the stepped portion 12 in advance, the yield of hard brazing and the reliability of coupling can be relatively increased by the method of filling with the capillaries further downward. Further, after finishing the brazing, a welding path 30 is formed on the surface of the head body 10 (see FIG. 7), and the welding material of the brazing of the welding path 30 is uniformly in the filler space 24. After being filled, the finished golf club head finished product (not shown) is formed to have a relatively consistent weld appearance after removing the weld path 30 by processing.

  Referring to FIG. 8, the structure for joining the face plates of the golf club head according to the second embodiment of the present invention is posted. Compared with the first embodiment, the positioning projection 22 of the face plate 20 of the second embodiment is further formed with an inclined surface 25 from its bottom. When the face plate 20 performs positioning, the positioning protrusion 22 is easily locked into the recessed groove 11 by the inclined surface 25, so that the positioning by locking can be further simplified in the present invention. Further, it is possible to avoid the opening-shaped lip edge of the recessed groove 11 from being damaged by the locking of the positioning protrusion 22.

  Referring to FIG. 9, a structure for joining face plates of a golf club head according to a third embodiment of the present invention is posted. Compared to the first and second embodiments, the positioning protrusion 22 of the face plate 20 of the third embodiment can be formed in the shape of a stepped columnar geometric columnar body. Therefore, the contact area by the engagement with the inner peripheral edge of the recessed groove 11 can be reduced by the positioning protrusion 22, and the positioning protrusion 22 is inserted into the recessed groove 11 without affecting the positioning reliability. The inside can be easily locked and entered, and the requirement for pressure application strength can be relatively reduced. Also, the face plate 20 can simultaneously form positioning protrusions 22 having several different shapes according to the demand for the product.

  Referring to FIG. 10, there is posted a structure for joining face plates of a golf club head according to a fourth embodiment of the present invention. Compared to the first and second embodiments, the positioning protrusion 22 of the face plate 20 of the fourth embodiment can be formed in the shape of a semicircular columnar geometric columnar body. Therefore, the contact area by the engagement with the inner peripheral edge of the recessed groove 11 can be reduced by the positioning protrusion 22, and the positioning protrusion 22 is inserted into the recessed groove 11 without affecting the positioning reliability. The inside can be easily locked and entered, and the requirement for pressure application strength can be relatively reduced. Also, the face plate 20 can simultaneously form positioning protrusions 22 having several different shapes according to the demand for the product.

  Referring to FIG. 11, the structure for joining the face plates of the golf club head according to the fifth embodiment of the present invention is posted. Compared with the first and second embodiments, the positioning protrusion 22 of the face plate 20 of the fifth embodiment can be formed in the shape of a triangular columnar geometric columnar body. Therefore, the contact area by the engagement with the inner peripheral edge of the recessed groove 11 can be reduced by the positioning protrusion 22, and the positioning protrusion 22 is inserted into the recessed groove 11 without affecting the positioning reliability. The inside can be easily locked and entered, and the requirement for pressure application strength can be relatively reduced. Also, the face plate 20 can simultaneously form positioning protrusions 22 having several different shapes according to the demand for the product. It will be readily understood that the shape of the positioning protrusion 22 can be formed in the shape of an appropriate geometric columnar body other than the shape described above.

  Referring to FIGS. 12 and 13, a golf club head face plate coupling structure according to a sixth embodiment of the present invention is posted. Compared to the first embodiment, the golf club head face plate coupling structure of the sixth embodiment also includes the head main body 10, the face plate 20 and a plurality of positioning protrusions 13, but the positioning protrusion 13 is the head. It is provided on the inner peripheral edge of the recessed groove 11 of the main body 10, and the outer peripheral edge of the face plate 20 is preferably formed in an annular plane. As shown in FIG. 13, a cushion space 14 is formed between each of the two positioning protrusions 13 on the inner peripheral edge of the recessed groove 11. Similarly, the positioning protrusion 13 can be formed by selecting a geometrical columnar shape such as a stepped columnar shape, a semicircular columnar shape, or a triangular columnar shape, and extends from the stepped portion 12 of the recessed groove 11 toward the opening. Preferably, a filler space 15 is formed in advance between the opening of the recessed groove 11 and the positioning protrusion 13. As shown in FIGS. 2 to 4 of the first embodiment, the widths w1, w2 and quantity of the positioning protrusion 13 and the cushion space 14 are preferably maintained in a ratio of w1: w2 between 9: 1 and 1: 9. To be formed. Further, the thickness d1 from which the positioning protrusion 13 protrudes is preferably formed to be larger than a predetermined distance d2 between the recessed groove 11 and the face plate 20 (see FIG. 6), and the positioning protrusion 13 is concave. Corresponding to the inner peripheral edge of the groove 11, it is formed to protrude excessively with a thickness of about 0.5 mm, preferably 0.3 mm, and best 0.2 mm. Therefore, also in the present invention, the positioning protrusion 13 can simplify the positioning of the assembly at the time of welding the head body 10 and the face plate 20, further increase the bonding strength of welding and reduce the manufacturing cost. Can be suppressed.

  As described above, according to the conventional golf club head face plate coupling structure, cavities are produced during welding, the precision required for assembling the members is too high, and the welding tool or machine tool is used during face welding. However, according to the golf club head face plate coupling structure of the present invention shown in FIG. 1, the positioning protrusion 22 protrudes from the outer peripheral edge of the face plate 20. Since it can be positioned by being locked inside the recessed groove 11 so as to be plastically deformable, the assembly positioning during welding can be easily simplified, the strength of the coupling can be increased, and the manufacturing cost can be reduced. Can be suppressed.

  The present invention may be implemented in other ways without departing from the spirit and essential characteristics thereof. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a golf club head face plate coupling structure according to a first embodiment of the present invention. FIG. 3 is an enlarged view of a local portion due to the structure of connecting the face plates of the golf club head according to the first embodiment of the present invention. It is a perspective view by the structure of the positioning protrusion of the face plate of Example 1 of this invention. It is a perspective view by the structure of the positioning protrusion of the face plate of Example 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an assembled state by a face plate coupling structure of a golf club head of Example 1 of the present invention. FIG. 3 is an enlarged view of a local portion due to the structure of connecting the face plates of the golf club head according to the first embodiment of the present invention. 1 is a perspective view of an assembled state after welding of a face plate coupling structure of a golf club head of Example 1 of the present invention. FIG. It is an enlarged view of the local part by the joint structure of the face plate of the golf club head of Example 2 of this invention. It is an enlarged view of the local part by the joint structure of the face plate of the golf club head of Example 3 of this invention. It is an enlarged view of the local part by the joint structure of the face plate of the golf club head of Example 4 of this invention. It is an enlarged view of the local part by the joint structure of the face plate of the golf club head of Example 5 of this invention. It is a disassembled perspective view by the joint structure of the face plate of the golf club head of Example 6 of this invention. It is an enlarged view of the local part by the joint structure of the face plate of the golf club head of Example 6 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Head main body 11 Recessed groove 12 Stepped part 13 Positioning protrusion 14 Cushion space 15 Filler space 15 Face board 21 Face 22 Positioning protrusion 23 Cushion space 24 Filler space 25 Inclined surface 30 Welding path

Claims (9)

  A golf club head face plate coupling structure comprising a head body (10), a face plate (20), and a plurality of positioning protrusions (22), wherein a concave notch is formed in front of the head body (10). A groove (11) is formed, a face (21) for hitting a golf ball is formed in front of the face plate (20), and the plurality of positioning protrusions (22) are formed on the face plate (20). When the face plate (20) is inserted into the recessed groove (11) of the head body (10), the positioning protrusion (22) is plastically deformable so as to be freely deformable. ) And the face plate (10) is appropriately positioned inside the recessed groove (11), thereby simplifying assembly positioning in the subsequent welding manufacturing process. To do Coupling structure of the face plate of a golf club head, characterized in that the kill.   The recessed groove (11) of the head body (10) is further provided with a stepped portion (12), and the face plate (20) can be supported by the stepped portion (12). Item 2. A golf club head face plate coupling structure according to Item 1.   The positioning protrusion (22) is formed so as to protrude excessively with a length of 0.5 mm to 0.2 mm corresponding to the inner peripheral edge of the recessed groove (11), thereby forming a degree of freedom of plastic deformation. 2. The golf club head face plate coupling structure according to claim 1, wherein the golf club head face plate coupling structure is formed.   A cushion space (23) is formed between each of the two positioning protrusions (22), and the proportionality between the positioning protrusion (22) and the cushion space (23) is from 1: 9 to 9: 1. 2. The golf club head face plate coupling structure according to claim 1, wherein the golf club head face plate coupling structure is formed so as to be interposed.   The positioning protrusion (22) of the face plate (20) is formed with an inclined surface (25) at the bottom so that the positioning protrusion (22) can be easily locked inside the recessed groove (11). The golf club head face plate coupling structure according to claim 1, wherein:   The golf club head face plate coupling structure according to claim 1, wherein a filler space (24) is formed in advance between the positioning protrusion (22) and the face (21).   The golf club head face plate coupling according to claim 1, wherein the positioning protrusion (22) can be selected from shapes of geometric columnar bodies such as rectangular columnar, stepped columnar, semicircular columnar, and triangular columnar. Construction.   The welding manufacturing process can be selected from manual welding and automated welding, and can be selected from, for example, hard brazing, tungsten inert gas arc welding, high energy welding, laser beam welding, electron beam welding, and plasma arc welding. The golf club head face plate coupling structure according to claim 1.   A golf club head face plate coupling structure comprising a head body (10), a face plate (20), and a plurality of positioning protrusions (13), wherein a concave notch is formed in front of the head body (10). A groove (11) is formed, a face (21) for hitting a golf ball is formed in front of the face plate (20), and the plurality of positioning protrusions (13) are formed on the head body (10). When the face plate (20) is fitted into the recessed groove (11) of the head body (10), the positioning protrusion (13) is plastically deformed so as to protrude to the inner peripheral edge of the recessed groove (11). The head body (10) can be freely engaged and coupled to the outer peripheral edge of the recessed groove (11), and the face plate (10) is appropriately positioned inside the recessed groove (11). In subsequent welding manufacturing processes Coupling structure of the face plate of the golf club head is characterized in that it is possible to simplify the positioning of that assembly.

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