JP3924268B2 - Golf club head structure - Google Patents

Description

  The present invention relates to a structure of a golf club head, and in particular, a groove is formed by extending from a stepped portion of an opening of a head body. When a face plate is welded and bonded, excess molten metal liquid is oozed by the groove. The present invention relates to a structure of a golf club head capable of catching.

The structure of a conventional golf club head includes a head body 10 and a face plate 20 as shown in FIGS. The head body 10 is a wood-type head, and is provided with an opening 11 and a stepped portion 12. The stepped portion 12 is formed on the inner peripheral edge of the opening 11 to support the lip on the lower surface of the face plate 20. Since it can be used, the head main body 10 and the face plate 20 can be welded and joined. In addition, as shown in FIG. 10, there is one in which, for example, an annular wall 21 can be formed at the periphery of the face plate 20 by bending (see, for example, Patent Document 1).
US Public Notice 2002/0115501

  In the structure of the conventional golf club head as described above, when the head body 10 and the face plate 20 are welded and joined, the peripheral edge (that is, the welding position) of the opening 11 of the head body 10 is secondary or tertiary. Since it has a change in the degree of curvature of a solid body, it is necessary to set a secondary or tertiary welding path corresponding to the welding apparatus. However, for high energy welding, the conversion of the welding path becomes more complicated, and the welding depth at the welding position becomes difficult to control more accurately. As a result, when high energy welding is performed using a relatively high heat input, a sufficient welding depth can be obtained. However, an excessive molten metal liquid is generated in the welding process, and the head main body 10 is subjected to welding. Since the molten metal liquid is solidified between the head main body 10 and the back surface of the face plate 20 by soaking in, the area of effective deformation when the face plate 20 is hit is not only reduced. Since the coefficient of elasticity (CO) is also reduced, there is a problem in that the appearance of the head body 10 is deteriorated. Further, since the excess molten metal liquid is formed in the weld ball and falls into the head main body 10, there is a problem that noise due to fluctuations occurs in the finished head product. In addition, for an iron-type head body, an iron-type head body is usually provided with a cavity, and an undercut is formed between the cavity and the face plate. Since the excess molten metal liquid is solidified in the undercut portion and cannot be removed by using a tool, there is a problem that the elastic recovery coefficient is similarly deteriorated. On the other hand, when high energy welding is performed using a relatively low heat input, it is possible to avoid the penetration of the molten metal liquid, but since the welding depth is not sufficiently formed, There was a problem of poor welding or insufficient bond strength. Further, the contact area between the stepped portion 12 of the head body 10 and the face plate 20 is always enlarged to prevent the molten metal liquid from penetrating, but the effective elastic deformation area of the face plate 20 is also relatively reduced. There was a problem of being. Thus, the structure of the conventional golf club head as described above must be further improved.

  The present invention was invented in view of such problems, and the object of the present invention is to form a first stepped portion and a second stepped portion by extending from the opening of the head body. A groove is formed between the one stepped portion and the second stepped portion. When welding is performed, it is possible to prevent excessive molten metal liquid from permeating through the groove, so that it is possible to avoid noise caused by fluctuation of the finished head product due to generation of the weld ball. In addition, since the first stepped portion is formed in a relatively small contact area and can place the face plate, the effective elastic deformation area of the face plate can be relatively increased, and the welding quality, It is an object of the present invention to provide a golf club head structure capable of enhancing production efficiency and long-distance hitting ability.

  The first object of the present invention is that the groove is formed by extending from the opening of the head body, so that when the face plate is welded and joined to the opening by high energy welding, excess molten metal liquid is removed by the groove. Since it is possible to catch infiltration, it is possible to avoid the occurrence of noise caused by fluctuation of the finished head product due to the generation of the weld ball, and therefore, it is intended to provide a golf club head structure capable of improving the quality of welding. Is.

  The second object of the present invention is that the first stepped portion and the second stepped portion are formed by extending from the opening of the head body, and the excess molten metal liquid that has permeated during welding is effectively received by the groove. Accordingly, since the first stepped portion is formed in a relatively small contact area and can support the face plate, it is intended to provide a golf club head structure capable of enhancing a long-distance hitting ability. It is what.

  The third object of the present invention is that the first stepped portion and the second stepped portion are formed by extending from the opening of the head body, and the excess molten metal liquid that has permeated during welding is effectively received by the groove. Therefore, it is possible to prevent the molten metal liquid from solidifying inside the undercut, and therefore, it is an object of the present invention to provide a golf club head structure capable of increasing the yield of the manufacturing process.

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In order to achieve the above object, a golf club head structure according to the present invention includes a head body and a face plate. In the structure of the golf club head, the head body Ru opening is provided. F head in the opening side of the main body first stepped portion is provided extending annularly toward the front of the opening, the second stepped extending further annular toward the first stepped portion in front of the opening part is Ru provided. A first stepped portion is formed between the second stepped portion Ru groove so as to surround the periphery of the opening is formed in an annular shape. Annular wall extending annularly bent toward the head main body on the back side around the face plate Ru is formed. The end of the annular wall and a part of the inner peripheral surface thereof are joined to the first stepped portion, and the second stepped portion and the groove face the inner peripheral surface of the annular wall of the face plate. When welding is performed at a joint portion between the end of the annular wall of the face plate and the first stepped portion of the head body, a molten metal liquid is generated at the joint portion by metal melting between the face plate and the head body. The molten metal liquid that passes through the joint portion between the first stepped portion and the end of the annular wall and permeates into the groove is received by the groove, and the molten metal liquid solidifies and bonds to the inner surface of the groove. The second stepped portion prevents the molten metal liquid from flowing out of the groove. The internal space of f head body may also be formed to seal. The face plate can be coupled to the head body by a high energy welding method. The high energy welding method may be laser beam welding, plasma arc welding, or electron beam welding.

  According to the structure of the golf club head of the present invention, the groove is formed by extending from the opening of the head main body, so that when the face plate is welded and joined to the opening by high energy welding, excess melting is performed by the groove. Since the penetration of the metal liquid can be received, it is possible to avoid the occurrence of noise due to the fluctuation of the finished head product due to the generation of the weld ball, and there is an advantage that the quality of the weld can be improved.

  According to the structure of the golf club head of the present invention, the first stepped portion and the second stepped portion are formed by extending from the opening of the head body, and the excess molten metal liquid that has permeated during welding is formed by the groove. By being effectively received, the first stepped portion is formed in a relatively small contact area and can support the face plate, so that there is an advantage that the ability to hit a long distance can be enhanced.

  According to the structure of the golf club head of the present invention, the first stepped portion and the second stepped portion are formed by extending from the opening of the head body, and the excess molten metal liquid that has permeated during welding is formed by the groove. Since the molten metal liquid can be prevented from solidifying inside the undercut by being effectively received, there is an advantage that the yield of the manufacturing process can be increased.

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

  FIG. 1 is an exploded perspective view of the golf club head structure according to the first embodiment of the present invention, FIG. 2 is a sectional view of the assembled golf club head structure according to the first embodiment of the present invention, and FIG. FIG. 4 is a partial cross-sectional view after performing high energy welding with the structure of the golf club head of Example 1 of the invention, FIG. 4 is an exploded perspective view of the structure of the golf club head of Example 2 of the present invention, and FIG. FIG. 6 is a cross-sectional view of the assembled state according to the golf club head structure of Embodiment 2 of the invention, FIG. 6 is a cross-sectional view of the assembled state according to the golf club head structure of Embodiment 3 of the present invention, and FIG. FIG. 8 is a cross-sectional view of the assembled state according to the golf club head structure of Embodiment 4 of the invention, and FIG. 8 is a cross-sectional view of the assembled state according to the golf club head structure of Embodiment 5 of the present invention.

  The members of a part of the structure of the golf club head of the present invention are the same as those of the conventional golf club head shown in FIGS. Therefore, its structure and function will not be described again in detail.

  1 and 2, the structure of the golf club head according to the first embodiment of the present invention includes a head body 10 and a face plate 20. The head body 10 is provided with an opening 11, a first stepped portion 12, a second stepped portion 13, and a groove 14. The head body 10 is a wood-type head, and the space inside the head body 10 is preferably formed so as to be sealed. The opening 11 is formed on the front surface of the head body 10, the first stepped portion 12 and the second stepped portion 13 are formed by extending from the inner periphery of the opening 11, and the groove 14 is recessed in the first stepped shape. It is provided between the part 12 and the second stepped part 13. The face plate 20 is formed of a flat plate or arc-shaped metal plate, and the face plate 20 can be initially fitted into the opening 11 of the head body 10, so that high energy welding is performed in the subsequent manufacturing process. be able to. At the time of fitting, the outer peripheral edge 201 of the face plate 20 is coupled to the inner peripheral edge 101 of the opening 11 of the head body 10, and the lip 202 on the lower surface of the face plate 20 is coupled to the first stepped portion 12 of the head body 10. Furthermore, the lower surface of the face plate 20 is formed so as to maintain an appropriate distance from the second stepped portion 13.

  2 and 3, in the first embodiment of the present invention, the head body 10 and the face plate 20 are joined by high energy welding. In the present invention, high energy welding such as laser beam welding, plasma arc welding, or electron beam welding can be used. At the time of welding, in the high energy welding, a welding path 30 is formed at the coupling position of the inner peripheral edge 101 of the opening 11 of the head body 10 and the outer peripheral edge 201 of the face plate 20. At this time, the molten metal liquid 31 in a part of the welding path 30 normally penetrates into the head main body 10 from between the first stepped portion 12 of the head main body 10 and the lip 202 on the lower surface of the face plate 20. Then, in the present invention, the molten metal liquid 31 can be effectively received using the groove 14, so that the molten metal liquid 31 is prevented from falling into the head body 10 and causing noise due to fluctuation as a weld ball. be able to. In addition, since the soaked molten metal liquid 31 is effectively received by the groove 14, the first stepped portion 12 can reduce the contact area until the face plate 20 can be sufficiently supported. The stepped portion 13 does not need to contact and support the lower surface of the face plate 20. The smaller the contact area between the first stepped portion 12 and the face plate 20, the larger the effective elastic deformation area of the face plate 20. Therefore, the flight distance of the hit ball of the head finished product may be relatively extended. it can.

Furthermore, it preferably is applied a suitable amount of the welding aid (not shown) in advance in, for example a groove 14 in the present invention.

  4 and 5, the structure of the golf club head according to the second embodiment of the present invention is posted. Compared to the first embodiment, the annular wall 21 is formed so as to be integrally formed so as to be bent and stretched from the face plate 20 of the second embodiment, and the head body 10 further includes a first corresponding to the annular wall 21. A stepped portion 12, a second stepped portion 13 and a groove 14 are provided. Similarly, the groove 14 can also receive the excess molten metal liquid 31 that has soaked in (see FIG. 3). Further, by reducing the contact area between the first stepped portion 12 and the face plate 20 in Example 2, the effective elastic deformation area of the face plate 20 can be expanded, and the face plate 20 is stretched. By further enlarging the effective elastic deformation area of the face plate 20 by the annular wall 21, it is possible to maximize the flight distance of the hit ball of the finished head product.

  Referring to FIG. 6, the structure of the golf club head according to the third embodiment of the present invention is posted. Compared with the first and second embodiments, the head main body 10 of the third embodiment is an iron-type head. Similarly, an opening 11 (also referred to as a cavity), a first stepped portion, and a second are formed on the front of the head main body 10. Steps and grooves 14 are provided. The opening 11 can be formed, for example, in an open shape or a sealed shape on the back surface of the head body 10. Since the face plate 20 can be initially fitted in the opening 11 of the head body 10, high energy welding can be performed in the subsequent manufacturing process. At the time of fitting, the outer peripheral edge 201 of the face plate 20 is coupled to the inner peripheral edge 101 of the opening 11 of the head body 10, and the lip 202 on the lower surface of the face plate 20 is coupled to the first stepped portion 12 of the head body 10. Furthermore, the lower surface of the face plate 20 is formed so as to maintain an appropriate distance from the second stepped portion 13. At the time of welding, the molten metal liquid 31 excessively soaked by the groove 4 can be effectively received (see FIG. 3), and the molten metal liquid is irregular and the openings 11 of the head body 10 and the face plate 20 Since it is possible to prevent solidification in the undercut portion between them, it is possible to omit the step of deeply removing the molten metal liquid using a tool in the present invention, so that the quality of welding is improved. At the same time, by ensuring that the lower surface of the face plate 20 is not adhered by the molten metal liquid, the elastic deformation ability of the face plate 20 can be ensured.

  Referring to FIG. 7, the structure of a golf club head according to a fourth embodiment of the present invention is posted. Compared with the first, second, and third embodiments, the head body 10 of the fourth embodiment is also an iron-type head, and is formed so that the annular wall 21 is integrally formed so as to be bent and extended from the face plate 20. Similarly, the head main body 10 is provided with a first stepped portion 12, a second stepped portion 13 and a groove 14 corresponding to the annular wall 21. Similarly, the groove 14 can also receive the excess molten metal liquid 31 that has soaked in (see FIG. 3), so that the molten metal liquid is irregular and the underflow between the opening 11 of the head body 10 and the face plate 20 is not possible. Since the solidification of the cut portion can be prevented, the quality of welding can be improved, and at the same time, the elastic deformation ability of the face plate 20 can be ensured. Further, by further expanding the effective elastic deformation area of the face plate 20 by the annular wall 21 extended from the face plate 20, the flying distance of the hit ball of the head finished product can be maximized. Furthermore, the opening 11 can be formed, for example, in an open shape or a sealed shape on the back surface of the head body 10.

  Referring to FIG. 8, the structure of the golf club head according to the fifth embodiment of the present invention is posted. Compared to the first, second, third, and fourth embodiments, the head body 10 of the fifth embodiment is also an iron-type head, and a lip 12 ′ is formed on the outer peripheral edge of the opening 11 on the front surface of the head body 10. It can be used as a single stepped portion. Similarly, the lip 12 ′ extends toward the inside of the opening 11 to form a second stepped portion 13 and a groove 14. Thus, since the face plate 20 can be directly aligned with the lip 12 ′ on the front surface of the head body 10, high energy welding can be performed in the subsequent manufacturing process. At the time of welding, the groove 14 can also receive the excessive molten metal liquid that has soaked in (see FIG. 3), so that the molten metal liquid is irregular and the openings 11 of the head body 10 and the face plate 20 Since it is possible to prevent the undercut portion from being solidified, the quality of the welding can be improved, and at the same time, the elastic deformation ability of the face plate 20 can be ensured. Further, the opening 11 can be formed, for example, in an open shape or a sealed shape on the back surface of the head body 10.

  As described above, according to the structure of the conventional golf club head shown in FIG. 9, there are problems that the molten metal liquid permeates and the effective elastic deformation area is insufficient. According to this, since it is possible to reliably prevent the molten metal liquid 31 from seeping in with the added groove 14, it is possible to reliably improve the quality of welding and to increase the hitting ability over a long distance.

  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.

It is a disassembled perspective view by the structure of the golf club head of Example 1 of this invention. It is sectional drawing of the assembled state by the structure of the golf club head of Example 1 of this invention. It is local sectional drawing after performing high energy welding by the structure of the golf club head of Example 1 of this invention. It is a disassembled perspective view by the structure of the golf club head of Example 2 of this invention. It is sectional drawing of the assembled state by the structure of the golf club head of Example 2 of this invention. It is sectional drawing of the assembled state by the structure of the golf club head of Example 3 of this invention. It is sectional drawing of the assembled state by the structure of the golf club head of Example 4 of this invention. It is sectional drawing of the assembled state by the structure of the golf club head of Example 5 of this invention. It is sectional drawing of the assembled state by the structure of the conventional golf club head. It is sectional drawing of the assembled state by the structure of the conventional golf club head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Head main body 101 Inner periphery 11 Opening part 12 1st step-shaped part 12 'Lip 13 2nd step-shaped part 14 Groove 20 Face board 201 Outer periphery 202 Lip 21 Annular wall 30 Welding path 31 Molten metal liquid

Claims (4)

The golf club head structure includes a head body (10) and a face plate (20). The head body (10) is provided with an opening (11), and the head body (10) has an opening (11). ) Side is provided with a first stepped portion (12) extending annularly toward the front of the opening (11), and further annular from the first stepped portion (12) toward the front of the opening (11). the second stepped portion (13) is provided extending groove (14 so as to surround the periphery of the opening between the first stepped portion (12) and the second stepped portion (13) (11) ) is formed in an annular shape, on the back side around the face plate (20) is formed an annular wall extending annularly bent toward the head body (10) (21), the ends of the annular wall (21) and among its a portion of the circumferential surface is bonded to the first stepped portion (12) The second stepped portion (13) and groove (14) faces the inner circumferential surface of the annular wall (21) of the face plate (20), ends and the head body of the annular wall of the face plate (20) (21) ( When welding is performed at a joint portion with the first stepped portion (12) of 10), a molten metal liquid is generated at the joint portion by metal melting of the face plate (20) and the head body (10). The molten metal liquid (31) that passes through the joint portion between the shape portion (12) and the end of the annular wall (21) and soaks into the groove (14) is received by the groove (14), and the molten metal liquid (31 ) binds solidifies on the inner surface of the groove (14), the golf club head in which the second stepped portion (13), characterized in that the blocking the outflow of the molten metal liquid from the groove (14) (31) Construction. For a golf club head of claim 1, wherein the internal space is characterized by being formed so as to seal the head body (10). For a golf club head of claim 1, wherein the face plate (20), characterized in that coupled to the head body (10) by method of high energy welding. 4. The golf club head structure according to claim 3, wherein the high energy welding method is laser beam welding, plasma arc welding, or electron beam welding.

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