JP2002085601A - Golf club head and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head satisfactorily stuck with a face member when welding the face member to a head body which is swelled outward at a side section and increased in capacity and to provide its manufacturing method. SOLUTION: The face member is welded to the face side opening section of the head body swelled outward at the side section to form a hollow metal head. At least the toe side of the side section is formed thinner than the face member, at least the toe side of the toe side and the heel side of the face member is embedded in the face side opening section of the head body, and its toe side peripheral edge section is welded on the front side of the head body. The top side and the sole side of the face member are made to abut on the head body on the peripheral edge of the face side opening section, and the top and sole side peripheral edge sections are welded on the upper and lower sides of the head body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow metal golf club head.

[0002]

2. Description of the Related Art In recent years, golf club heads called wood have been replaced with natural woods such as persimmons and cherry blossoms from the viewpoint of stability of quality and ease of material supply. Golf club heads (hereinafter, referred to as "heads") made of a hollow metal material are known. Recently, a head in which an opening is provided on the face side of a head body and a face member made of a material or a structure suitable for hitting a ball is welded to the opening is widely used.

As a mounting structure of the face member to the head main body, a face member 5 is inserted into the face side opening 3 of the head main body 1 as shown in JP-A-8-28053 or FIG. A member in which the peripheral portion of the member 5 is welded to the front side of the head body 1 (so-called,
38, or a face member 11 is placed over the face side opening 9 of the head body 7 as shown in JP-A-9-28842 or FIG. A head body 7 at the periphery of the opening 9 is butted, and the periphery of the face member 11 is welded on the upper and lower sides and the left and right sides of the head body 7 (a so-called “butt type”).

[0004] The filling type shown in FIG.
It is known that the mounting strength against the shearing force at the time of hitting the ball is lower than the butting type of FIG. 38 in which the head body 7 is butted against the back side of the face member 11. by the way,
In recent years, in order to improve the flight distance and directionality of a hit ball, a head having a large volume and a large moment of inertia at the time of hitting the ball has become the mainstream, and accordingly the entire head tends to be thinner.

[0005] However, even if the overall thickness of the head is reduced, there is a limit to the thickness of the face member in terms of strength.
Like the head body, the face member cannot be made thin.

For this reason, it is impossible to increase the size of the face member in accordance with the increase in the size of the head in order to suppress the increase in the weight of the entire head. As a result, mainly, the side portions of the head main body are largely expanded outward. Therefore, the head volume is increased.

[0007]

However, as a result of increasing the head volume by expanding the side portions outward as described above, as shown in FIG. 39, the side portion 1 of the head main body 13 is enlarged.
5 comes in contact with the face member 17 at a gentler angle than in the related art.

For this reason, as shown in FIG. 40, when the head body 13 and the face member 17 are mounted, similarly to the mounting structure shown in FIG.
When the three side parts 15 are butted and welded,
As shown by the broken line, when the edge (ridge line) 19 is formed by shaving the peripheral portion of the face member 17 in the finishing step, the thickness of the face member 17 at the welded portion is reduced, and the portion is stronger than the face member 17. It is pointed out that there is a problem that the strength is reduced because the welding material is inferior to the welding material, and the position of the edge 19 is slightly displaced for each product, and the face shape is varied, so that the quality cannot be made uniform.

In order to prevent the welding portion from being thinned, the welding bead 21 is overfilled. However, if the welding bead 21 is enlarged, the head body 13 has a toe and a heel. The direction becomes heavy, which hinders the weight balance of the head.
However, there is a possibility that the bending of the face member 17 is restricted and a soft feel at impact cannot be obtained.

The present invention has been devised in view of the above circumstances, and has the disadvantages described above in welding a face member to a head body having a large volume by expanding a side portion outward. An object of the present invention is to provide a head to which the face member can be satisfactorily attached and a method for manufacturing the same.

[0011]

In order to achieve the above object, the invention according to claim 1 is directed to a hollow body in which a face member is welded to a face-side opening of a head body having a side part bulging outward. In the metal head, at least the toe side of the side part is formed thinner than the face member, and at least the toe side of the face member and the toe side of the heel side are fitted into the face side opening of the head body, and the toe is formed. The side edges are welded on the front side of the head body, and the top side and the sole side of the face member abut against the head body on the periphery of the face side opening, and the top and sole side edges are welded on the upper and lower sides of the head body. It is characterized by becoming.

The invention according to claim 2 is based on claim 1.
In the head according to the invention, at least one of the top side and the sole side of the face member is provided with a flange protruding toward the back side of the head body. In the head according to the first or second aspect, the face member is formed to have a width equal to or smaller than a width of the head body in the toe and heel directions on the face side.

According to a fourth aspect of the present invention, in the head according to any one of the first to third aspects, an outer peripheral edge on a top side and a heel side of the face side opening of the head body. A plurality of claw pieces projecting forward of the head body are integrally formed, and the top and sole sides of the face member are held by the respective claw pieces. The top and sole side edges of the face member are welded to the upper and lower sides of the head body. The invention according to claim 5 is characterized in that the claw according to claim 4 is provided. The piece is formed so as to be able to hold the face member.

On the other hand, the invention according to claim 6 is a method of manufacturing a head made of a hollow metal head by welding a face member to a face-side opening of a head body whose side portions are bulged outward. At least the toe side of the side portion is formed to be thinner than the face member, and at least the toe side of the toe and heel sides of the face member is fitted into the face side opening of the head main body, and the toe side peripheral portion is formed. In addition to welding on the front side of the head body, the top side and the sole side of the face member abut against the head body on the periphery of the opening on the face side, and the top and sole sides are welded on the upper and lower sides of the head body. According to a seventh aspect of the present invention, in the method for manufacturing a head according to the sixth aspect, at least one of the top side and the sole side of the face member is provided with a head main body. Forming a flange portion protruding click side, against the flange portion to the head main body of the face side opening rim, characterized by welding the tip of the flange portion at the upper and lower side of the head body.

The invention according to claim 8 is based on claim 6.
Alternatively, in the method of manufacturing a head according to claim 7, a plurality of claw pieces protruding forward from the head main body are integrally formed on a top side and a heel side outer peripheral edge of the face side opening of the head main body, The invention according to claim 9 is characterized in that the top and sole sides of the face member are welded to the upper and lower sides of the head body while holding the top and sole sides of the face member with the respective claw pieces. Item 8. In the head manufacturing method according to Item 8, the claw pieces are formed so as to be able to hold the face member, and while the face member is held between the respective claw pieces, the top and sole side peripheral portions of the face member are fixed to the head body. It is characterized by welding on the upper and lower sides.

The invention according to claim 10 is the invention according to claim 8.
Alternatively, in the head manufacturing method according to the ninth aspect, the face member is supported and clamped by the claw pieces, and then the face member is welded to each of the claw pieces to temporarily fix the face member. The invention according to claim 11 is the invention according to claims 8 to 10
The head manufacturing method according to any one of the above, wherein the claw pieces are removed after the face member is welded.

(Operation) When a ball is hit with a golf club using the head according to any one of claims 1 to 5, the head has a large volume and a large moment of inertia, and as a result, the face member bends. By using the ball, the ball flies with sufficient flight distance and directionality.

When the ball is hit, an impact is applied to the peripheral portion of the face member, that is, a portion to be attached to the face side opening of the head main body, but the thin side portion of the head main body which greatly bulges outward is deformed. However, the face member toe,
Absorbs the impact on the weld on the heel side edge,
The head body firmly supports the welded portion of the top and sole side edges of the face member.

Further, according to the head according to the second aspect, the head body against which the flange abuts firmly supports the face member against the impact applied to the welded portion of the top and sole side edges of the face member. Because the part is provided and the welded part is provided at a distance behind the edge of the head, the bending strength at the time of hitting the ball is not applied to the welded part, and the strength is improved,
Since the face member is welded to the head main body via the flange, the bending of the face member is not restricted by the thick portion due to the weld bead, and a softer feel at impact is obtained.

According to the manufacturing method of the sixth aspect, at least the toe and heel sides of the toe and heel sides of the face member are fitted into the face-side opening of the head body, and the toe-side peripheral portion is placed in front of the head body. At the same time, the head is manufactured by welding the top side and the sole side of the face member to the head body at the periphery of the opening on the face side, and welding the top and the periphery of the sole side at the upper and lower sides of the head body. According to the manufacturing method of the seventh aspect, the head is manufactured by abutting the flange to the head main body at the periphery of the face-side opening and welding the front end of the flange to the upper and lower sides of the head main body.

According to the manufacturing method of the eighth to eleventh aspects, while the top and the sole sides of the face member are held and sandwiched by the respective nail pieces, the peripheral portions of the top and the sole side of the face member are headed. By welding on the upper and lower sides of the main body, vertical displacement of the face member is prevented, and furthermore, occurrence of a step between the face member and the head main body is prevented. In the manufacturing method according to the tenth aspect, the face member is temporarily fixed by supporting the face member with the claw pieces and then welding the face member to each claw piece.
According to the invention, the head is manufactured by removing the claw pieces after welding the face member.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 4 show a head according to a first embodiment of the present invention.
Is a head main body made of a hollow outer shell in which the top portion 25, the side portion 27, the sole portion 29, and the hosel portion 31 except for the face side opening portion 23 are integrally precision-cast with a metal material such as a titanium alloy or stainless steel. In order to increase the head volume, the side portion 27 bulges outward greatly and is formed so as to have a head width 1.15 times or more the face width, and 1.2 times the face width. With the above head width, a large moment of inertia can be obtained when hitting a ball. And the head body 21 excluding the hosel part 31 is:
It is formed to be generally thinner than a face plate (face member) 33 described later.

The face-side opening 23 is welded to a face plate 33 which is slightly shorter in width than the face-side opening 23 and is made of a metal material such as a titanium alloy and is subjected to plastic working such as forging or press forming. The head 35 shown in FIG.
According to one embodiment of the manufacturing method according to the sixth aspect, the toe side and the heel side are fitted into the face side opening 23 of the head main body 21, and the toe and heel side peripheral portions are arranged on the front side of the head main body 21. At the same time, the top side and the sole side are abutted against the head body 21 on the periphery of the face side opening 23, and the top and sole side periphery are welded on the upper and lower sides of the head body 21, and attached to the face side opening 23. ing.

That is, as shown in FIGS. 1 and 3, the top portion 25 and the sole portion 29 of the head main body 21 along the face side opening portion 23 have a thickness greater than the thickness of the top of the face plate 33 and the peripheral portion of the sole side. Notches 36 and 37 having a slightly larger depth are provided. When the toe side and the heel side of the face plate 33 are fitted into the face side opening 23 as shown in FIGS. Head body 2 on the back side of the top and sole side peripheral portions
The top part 25 and the sole part 29 are abutted.

The "filling type" shown in FIG.
Similarly to the manufacturing method according to the present embodiment, the toe side and the heel side peripheral portion of the face plate 33 are welded to the side portion 27 on the front side of the head main body 21 as shown in FIG.
8, the top side of the face plate 33 and the peripheral edge of the sole side are butted against the head main body 21 and welded on the upper and lower sides, as in the "butt type" shown in FIG.
The top side of the face plate 33 and the back side of the peripheral edge of the sole side are respectively abutted against the top part 25 and the sole part 29 of the head main body 21 to be fixed, and as shown in FIG. Since the side portion 27 on the side is greatly bulged outward, the side portion 27 has a structure in which the side portion 27 is connected to the face plate 33 at a gentle angle.

In addition, in FIGS.
Is a weld bead. Since the present embodiment is configured as described above, when a ball is hit with a golf club using the head 35, the head 35 has a large volume and a large moment of inertia. As a result, the face plate 33 Bending occurs microscopically, and the ball flies with sufficient flight distance and directionality using this bending.

When the ball is hit, an impact is applied to the peripheral portion of the face plate 33, that is, a portion where the head body 21 is attached to the face side opening 23. While the thin toe and heel side portions 27 are deformed, the shock applied to the welds at the toe and heel side edges of the face plate 33 is absorbed to reduce the shearing force. The top portion 25 and the sole portion 29 of the head main body 21 that abut against the welded portion of the side peripheral portion abut against the back surface side of each peripheral portion, firmly support the face plate 33.

As described above with reference to FIGS. 37 and 38, the so-called "insertion type" has a lower mounting strength with respect to the shearing force at the time of hitting the ball than the "butt type". The toe side (heel side) of the face plate 33 is closer to the toe side (heel side) of the face side opening 23 of the head body 21 than the conventional "butt type". In addition, the impact at the time of hitting the ball is easily transmitted to the head main body 21. Then, the thin side portion 27 of the head main body 21 greatly swelling outward.
While being deformed, it absorbs the shock applied to the weld at the peripheral edge of the face plate 33 on the toe and heel side to reduce the shearing force,
Also, as shown in FIG. 5 and FIG.
When 3 is bent at the depth M, as shown in FIG. 5, the deformation of the face plate 23 in the toe and heel directions is gentler than the deformation in the top and sole directions shown in FIG. As shown in FIG. 4, even if the toe-side and heel-side peripheral portions of the face plate 33 are welded to the side portions 27 on the front side of the head main body 21, a "fit-in type" mounting structure does not hinder any strength. Nothing.

The top part 25 and the sole part 29
Since the structure does not greatly bulge outward as compared with the side portion 27, the present embodiment employs a “butt-type” mounting structure in which the top side of the face plate 33 and the peripheral side of the sole side are welded to the upper and lower sides of the head body 21. Is adopted to secure the mounting strength at the relevant site. Therefore, according to the head 35 according to the present embodiment, it is not necessary to cut the peripheral edge of the face plate 33 on the toe and heel side in the finishing step as in the conventional “butt type”, so that an edge is not formed. The thickness is not reduced and the strength is not reduced, and the edge position is not shifted and the face shape is not varied, so that the quality can be made uniform.

According to the present embodiment, it is not necessary to increase the number of weld beads 41 in order to prevent the thickness of the welded portion from being reduced, so that the weight balance of the head 35 is not hindered and the head 35 is increased. There is an advantage that a soft feel at impact can be obtained without restricting the bending of the face plate 23 by the weld bead 41. Also, since the face plate 33 is thinner at the periphery than at the center, the impact at the time of hitting can be absorbed and the feel at impact can be made softer.

According to the sixth embodiment of the manufacturing method of the present invention, it is possible to easily manufacture the head 35 having the above advantages. 7 to 10 show a head according to an embodiment of the present invention. In the drawings, reference numeral 43 denotes a face-side opening 4 provided in a face 45.
Except for 7, the present embodiment is a hollow head body in which the face portion 45, the top portion 49, the side portion 51, the sole portion 53, the hosel portion 55, and the like are integrally precision-cast with a metal material such as a titanium alloy or stainless steel. In the head 57 according to the present invention as well, in order to increase the head volume, the side portion 51 greatly swells outward, and the head main body 43 excluding the hosel portion 55 and the face portion 45 includes a face plate 59 described later.
Is formed thinner as a whole.

As shown in FIG. 7, the face side opening 47 is opened substantially at the center of the face portion 45 in the toe and heel directions, and the face side opening 47 is made of the same material as the face plate 33 described above. Plate 59 is welded. As shown in FIGS. 7 and 9, the face plate 59 has the head body 4 on the top and sole sides.
3, flange portions 61 and 63 projecting in the back direction are provided,
On the other hand, as shown in FIG. 10, the face portion 45 is formed gradually thicker from the toe and heel side toward the center and smoothly continues to the face plate 59. Even if it continues smoothly, the concentration of stress can be prevented, the face portion 45 can be rebounded without being damaged, and the shot feeling can be soft.

As shown in FIGS. 7 and 9, the depth of the top portion 49 and the sole portion 53 of the head body 43 along the face side opening 47 is slightly larger than the width of the flange portions 61 and 63. Notches 65 and 67 are formed with the face plate 59 as shown in FIGS.
When the toe side and the heel side are inserted into the face side opening 47, the flanges 61 and 63 abut against the top 49 and the sole 53 of the head body 43, respectively.

Thus, the head 57 according to this embodiment is
According to the manufacturing method according to one embodiment of the present invention, the toe side and the heel side peripheral portion of the face plate 59 are fitted into the face side opening 47 as shown in FIGS. The front side is welded to the face portion 45, and the flange 6 of the face plate 59 as shown in FIG.
The heads 1 and 63 are manufactured by abutting against the top portion 49 and the sole portion 53 of the head body 43 and welding the upper and lower sides of the head body 43.

Then, as shown in FIG.
Since the side portion 51 on the toe side of 3 is greatly bulged outward, the side portion 51 has a structure provided continuously with the face portion 45 at a gentle angle. 9 and 10, reference numerals 69 and 71 denote welding beads. Since the present embodiment is configured as described above, when a ball is hit with a golf club using the head 57, the head 57
The ball has a large moment of inertia due to its large volume, and as a result, the ball flies with a sufficient flight distance and directionality by using the deflection of the face plate 59.

When the ball is hit, an impact is applied to the peripheral portion of the face plate 59, that is, the mounting portion with the face-side opening 47, but the thin toe and heel sides of the head body 43 greatly bulging outward. While the side portion 51 is deformed, the shock applied to the welded portion of the toe and heel side edges of the face plate 59 is absorbed to reduce the shearing force. However, the deformation in the toe and heel directions is gentler than the deformation in the top and sole directions.
Even with the “fit-in type” mounting structure in which the toe side and the heel side peripheral edge of the face plate 59 are welded to the front side of the head main body 46 as shown in FIG.

In addition, the impact on the welded portion between the top and sole side edges of the face plate 59 is prevented by the flange 61,
The top portion 49 and the sole portion 53 of the head main body 43 where the 63 abuts strongly support the face plate 59,
In the present embodiment, the top of the face plate 59 is
Providing flanges 61 and 63 on the sole side,
7 (face plate 59) is provided at a distance behind the edge 73, so that bending strength is not applied to the welded portion at the time of hitting the ball compared to the above embodiment, and strength is improved.
Since the face plate 59 is welded to the head main body 43 via the flanges 61 and 63, the face plate 33 is thicker than the structure in which the weld beads 39 are formed on the top and sole sides of the face plate 33 as in the above embodiment. Thus, the bending of the face plate 59 is not restricted, and a softer shot feeling can be obtained.

Therefore, according to the present embodiment, the desired object can be achieved similarly to the embodiment shown in FIG.
In addition to an increase in the mounting strength of No. 9, a softer feel at impact is obtained, and the provision of the flanges 61 and 63 facilitates alignment during welding, thereby enabling reliable welding work. Since the influence of heat at the time on the striking surface of the face plate 59 is reduced, there is an advantage that the original strength and resilience of the face plate 59 can be obtained.

According to the sixth and seventh embodiments of the manufacturing method of the present invention, it is possible to easily manufacture the head 57 having the above advantages. FIGS. 11 to 14 show a second embodiment of the first and third aspects. In this embodiment, in addition to the configuration of the head 35 shown in FIGS. 1 to 4, the toe side of the face side opening 23-1 is formed. Along the heel side, a receiving surface 75 of the face plate 33 having a thickness near the center and a thickness substantially equal to the thickness of the side portion 27 on the periphery is provided with a constant width in the top and sole directions. ,
As shown in FIG. 14, the face plate 33 is welded to the side portion 27 on the front side of the head main body 21-1 in order to prevent the receiving surface 75 from restricting the bending of the face plate 33, and the face plate 33 is It has a structure in which it simply contacts the receiving surface 75.

Since other configurations are the same as those of the first embodiment shown in FIGS. 1 to 4, the same components are denoted by the same reference numerals and description thereof is omitted. Then, the head 35
In the first embodiment, the toe side and the heel side of the face plate 33 are attached to the face side opening 23- of the head main body 21-1 according to the second embodiment of the present invention. 1 and the toe and heel side peripheral edges are welded on the front side of the head main body 21-1, and the top side and the sole side are butted against the head main body 21-1 at the peripheral edge of the face side opening 23-1. The upper and lower sides of the head body 21-1 are welded at the top and bottom sides.

Since the head 35-1 according to the present embodiment is configured as described above, the present embodiment can also achieve the intended purpose similarly to the embodiment of FIGS. Of course, the receiving surface 75 supports the toe side and the heel side of the face plate 33 at the time of hitting the ball, so that the mounting strength of the face plate 33 is further improved as compared with the first embodiment, and the receiving surface 75 is provided. Thus, there is an advantage that the positioning at the time of welding is easily performed and a reliable welding operation can be performed.

The head 21-1 having the above-mentioned advantages can be easily manufactured by the above-described manufacturing method according to the second embodiment of the sixth aspect. In each of the above embodiments, a head body having an opening on the face side is precision-cast and a face plate is attached thereto, but the top portion, the side portion, the sole portion, the face plate, and the like are respectively provided. Needless to say, the present invention can be applied to a head formed by forging or pressing and welding these.

FIGS. 15 to 17 show a head according to a first embodiment of the present invention. The head 77 according to the present embodiment is also similar to the head 35 of FIG. The toe side and the heel side of the head plate 21 are fitted into the face side opening 23, and the toe and the heel side periphery are welded to the front side of the head main body 21, and the top side and the sole side of the face plate 33 are connected to the head main body 25. The top and sole side edges are welded to the upper and lower sides of the head main body 21 by abutting the notches 36 and 37, respectively.
As will be described later, the present embodiment is characterized in that a plurality of nail pieces are provided on the head main body 21 and the face plate 33 is held by each nail piece in manufacturing the head 77.

That is, as described in the embodiment of FIG. 1, the notches 36 and 37 provided in the top portion 25 and the sole portion 29 of the head main body 21 along the face side opening portion 23 correspond to the top of the face plate 33. , And formed with a depth slightly larger than the thickness of the sole side peripheral portion. For this reason, when the top portion 25 and the sole portion 29 of the head body 21 abut against the top surface of the face plate 33 and the back surface of the peripheral portion on the sole side when the face plate 33 is attached, a step is formed between the face plate 33 and the side portion 27. May occur. Further, since there is no means for regulating the vertical displacement of the face plate 33, the positioning is troublesome at the time of attachment.

Therefore, in this embodiment, a plurality of claw pieces 79 are provided on the head main body 21, and when the face plate 33 is attached, the top side and the sole side of the face plate 33 are sandwiched by the claw pieces 79 so that the vertical In addition to preventing displacement, a suitable gap required for welding is provided between the head body 21 and the face plate 33, while the face plate 3
The head 77 is positioned and held by positively preventing the occurrence of a step between the third part 3 and the side part 27. The head 77 is provided by one of the manufacturing methods according to claims 6, 8 to 11. It is manufactured as follows according to the embodiment.

The same components as those of the embodiment shown in FIG. 1 are denoted by the same reference numerals, and their description is omitted. First, as shown in FIG. 18, the notches 36, 3
A plurality of claw pieces 79 projecting forward from the head main body 21 are integrally formed on the outer peripheral edge portion 7 respectively.

The outer shape of the claw piece 79 is formed in an arc shape in the front-rear direction of the head main body 21, and the inner surface side is the face side opening 23.
19 and 20, each claw piece 79 is provided with a toe side and a heel side of the face plate 33 and a face side opening 23 of the head main body 21 as shown in FIGS. When the top side and the sole side are abutted against the head body 21 on the periphery of the face side opening 23, the top side and the sole side of the face plate 33 are sandwiched to prevent the vertical displacement thereof. Along with
While maintaining an appropriate gap required for welding between the head body 21 and the face plate 33, the generation of a step between the face plate 33 and the side portion 27 is positively prevented, and the face plate 33 is positioned and held. It has become.

After the casting of the head main body 21 in which the above-mentioned claw pieces 79 are integrally formed, as shown in FIG.
The face plate 33 is pressed into the inside of the claw piece 79 along the inner surface side of 9. Then, while providing an appropriate gap required for welding between the head main body 21 and the face plate 33, the face plate 33 is moved to a predetermined position so that a step does not occur between the face plate 33 and the side portion 27. After being positioned and held by the claw pieces 79, the distal end side of each claw piece 79 is melted by a welding tool (nozzle) 81 as shown in FIG. 20, and the face plate 33 is temporarily attached to the head main body 21 using the molten metal. Weld (temporarily fix).

Thereafter, as shown in FIG. 21, the welding material 81 and the welding rod 83 are used to melt the welding material along the gap between the head body 21 and the face plate 33, while the toe and heel of the face plate 33 are being melted. The side periphery is the head body 21
Of the face plate 33 and the upper and lower sides of the head plate 21 are welded to the upper and lower sides of the head body 21 so that the welding material enters the gap. At this time, the nail pieces 79
May be melted again and may be covered with the welding material and become integrated with the welding material.

After the completion of the main welding, the head 77 shown in FIG. 15 is manufactured by polishing along the periphery of the face plate 33 to remove the claw pieces 79 and unnecessary welding beads. The head 77 according to the present embodiment is configured as described above, and the intended purpose can be achieved by the head 77 similarly to the head 35 in FIG. 2. According to this, when the face plate 33 is attached, the claw pieces 79 sandwich the face plate 33 to prevent the face plate 33 from shifting in the vertical direction, and
While opening a proper gap required for welding between the head body 21 and the face plate 33,
In order to positively prevent the occurrence of a step between the head 77 and the side portion 27, in manufacturing the head 77 having the above-described operation and effect as compared with the above-described embodiment of the invention method according to claim 6, It is possible to surely stabilize quality and improve productivity.

As described above, according to the manufacturing method of the present embodiment, the face plate 3
3 can be temporarily fixed to the head main body 21,
There is an advantage that it is not necessary to use a welding material for temporary fixing separately. 22 to 24 show a head according to one embodiment of claims 1 to 5, and a head 85 according to this embodiment.
8, the toe side and the heel side of the face plate 59 are inserted into the face side opening 47 which opens at the substantially central portion of the face part 45, and the toe and heel side peripheral portions are headed. In addition to welding on the front side of the main body 43, the tips of the flanges 61 and 63 of the face plate 59 were butted against the top part 49 and the sole 53 of the head body 43, and the front ends were welded on the upper and lower sides of the head body 43. However, as described below, in the present embodiment, a plurality of claw pieces are
And the face plate 59 is held by each claw piece.

That is, as described in the embodiment of FIG. 7, the notches 65 and 67 provided in the top portion 49 and the sole portion 53 of the head main body 43 along the face side opening portion 47 are provided with the flange portions 61 and 63. It is formed with a depth that is slightly larger than the width. Therefore, if the flanges 61 and 63 abut against the top 49 and the sole 53 of the head main body 43 when the face plate 59 is attached, a step may be generated between the face plate 59 and the face 45. ,Also,
Since there is no means for regulating the vertical displacement of the face plate 59, the positioning is troublesome at the time of attachment.

Therefore, also in this embodiment, a plurality of claw pieces 79 are provided on the head main body 43, and when the face plate 59 is attached, the top side and the sole side of the face plate 59 are sandwiched between the claw pieces 79 and the vertical In addition to preventing displacement, a suitable gap required for welding is provided between the head body 43 and the face plate 59, and the face plate 5
The head 85 is positioned and held by positively preventing the occurrence of a step between the head 9 and the face portion 45. The head 85 is formed by the following method according to one embodiment of the invention according to claims 6 to 11. It is manufactured as follows.

The same components as those in the embodiment of FIG. 7 are denoted by the same reference numerals, and their description will be omitted. First, as shown in FIG. 25, the notches 65, 6
A plurality of claw pieces 79 projecting forward from the head body 43 are integrally formed on the outer peripheral edge of the head 7. As shown in FIG. 25, in the present embodiment as well, the claw piece 79 has an outer shape formed in an arc shape in the front-rear direction of the head main body 43, and has an inner surface that is flush with the outer peripheral edge of the face side opening 47. FIG. 2
As shown in FIG. 6 and FIG. 27, each claw piece 79 has the toe side and the heel side of the face plate 59 fitted in the face side opening 47 of the head main body 43, and the flange provided on the top side and the sole side. 61 and 63 are face side openings 47
When butting against the head body 43 on the peripheral edge, the top side and the sole side of the face plate 59 are sandwiched to prevent the vertical displacement thereof, and the appropriate amount of welding required between the head body 43 and the face plate 59 is required. While the gap is provided, the step between the face plate 59 and the face portion 45 is positively prevented from being generated, and the face plate 59 is positioned and held.

After the casting of the head body 43 in which the claw pieces 79 are integrally formed, the face plate 59 is pressed into the inside of each claw piece 79 along the inner surface side as shown in FIG. Then, while providing an appropriate gap required for welding between the head main body 43 and the face plate 59, the face plate 59 is clawed at a predetermined position so that the face plate 59 and the face portion 45 are flush with each other. After positioning and holding with the pieces 79, as shown in FIG.
Is melted with a welding tool 81, and the face plate 59 is temporarily welded to the head body 43 using the molten metal.

The face plate 59 and the face portion 4
If the positioning jig is applied to the striking surface side between the five, the striking surface side can be easily positioned flush. Thereafter, as shown in FIG.
The toe and heel side peripheral portions of the face plate 59 are welded to the front side of the head body 43 while the welding material is melted along the gap between the face plate 59 and the flange portions 61 and 63 of the face plate 59. Head head 4
3 is welded to the top portion 49 and the sole portion 53 to allow the welding material to enter the gap. At this time, the nail pieces 79 melt again,
Moreover, it may be covered with the welding material and integrated with the welding material.

Then, after the completion of the main welding, the head 85 shown in FIG. 22 is manufactured by polishing along the peripheral edge of the face plate 59 to remove the claw pieces 79 and unnecessary welding beads. The head 85 according to the present embodiment is configured as described above, and the intended purpose can be achieved by the head 85 as in the case of the head 57 in FIG. 8. According to the manufacturing method, the face plate 5
In mounting 9, the claw 79 sandwiches the face plate 59 to prevent the vertical displacement thereof,
While the claw pieces 79 provide an appropriate gap required for welding between the head body 43 and the face plate 59, the step between the face plate 59 and the face portion 45 is positively prevented from occurring. In the production of the head 85 having the function and effect, it is possible to surely stabilize the quality and improve the productivity.

Also, in the manufacturing method according to the present embodiment, the face plate 59 can be temporarily fixed to the head main body 43 by melting each claw piece 79, so that it is not necessary to use a separate welding material for temporary fixing. Has advantages. FIGS. 29 and 30 show a head according to one embodiment of claims 1, 3 to 5, and a head 87 according to this embodiment is the same as that of FIG.
Like the head 35-1, the face plate 33 is formed along the toe side and the heel side of the face side opening 23-1 at the center thereof and at the periphery thereof having substantially the same thickness as the side portion 27. The receiving surface 75 is provided with a certain width in the direction of the top and the sole, and the face plate 33 is brought into contact with the receiving surface 75 and its front side is welded to the side portion 27. Although the side peripheral portion is welded on the upper and lower sides of the head main body 21, also in the present embodiment, in manufacturing the head 87, a plurality of claws are provided on the head main body 21-1, and the face plate 33 is attached to each of the claws. It is characterized by holding.

The head 87 is manufactured as follows by one embodiment of the manufacturing method according to the sixth, eighth to eleventh aspects. The same components as those in the embodiment of FIG. 11 are denoted by the same reference numerals, and the description thereof will be omitted. First, as shown in FIG. 31, at the time of casting the head body 21-1, a plurality of claw pieces 79 projecting forward of the head body 21-1 are integrally formed on the outer peripheral edges of the notches 36 and 37, respectively.

The outer shape of the claw piece 79 is formed in an arc shape in the front-rear direction of the head main body 21-1.
3-1 is formed on a flat surface flush with the outer peripheral portion, and FIG.
As shown in FIG. 2, each claw piece 79 is brought into contact with the receiving surface 75 of the face plate 33, the toe side and the heel side thereof are fitted into the face side opening 23 of the head main body 21-1, and the top side thereof. And the sole side face side opening 23-1
When abutting against the head body 21-1 on the periphery, the top side and the sole side of the face plate 33 are sandwiched to prevent vertical displacement thereof, and welding is performed between the head body 21-1 and the face plate 33. While maintaining an appropriate gap required for the above, the generation of a step between the face plate 33 and the side portion 27 is positively prevented, and the face plate 33 is positioned and held.

A step is formed between the receiving surface 75 and the notch 36, and the receiving surface 75 is higher forward than the notch 36, and when the face plate 33 is brought into contact with the receiving surface 75. A gap is formed between the face plate 33 and the notch 36.

After the casting of the head main body 21-1 in which the above-mentioned claw pieces 79 are integrally formed, the face plate 33 is formed along the inner surface side of each of the claw pieces 79 as shown in FIGS.
Is pressed into the inside of the nail piece 79. Then, after the face plate 33 is brought into contact with the receiving surface 75 and its toe side and heel side are fitted into the face side opening 23 of the head main body 21-1, the tip of each claw piece 79 as shown in FIG. The side is melted with a welding tool 81, and the face plate 33 is temporarily welded to the head main body 21-1 using the molten metal.

Thereafter, as shown in FIG. 36, while the welding material is melted along the gap between the head main body 21-1 and the face plate 33 using the welding tool 81 and the welding rod 83, the toe of the face plate 33 is removed. , The heel side peripheral part is the head body 2
1-1, the face plate 33 is welded on the front side.
Are welded on the upper and lower sides of the head body 21-1 so that the welding material enters the gap. At this time, the claw pieces 79 may be melted again and may be covered with the welding material and integrated with the welding material.

Then, after the completion of the main welding, the head 87 shown in FIG. 29 is manufactured by polishing along the peripheral edge of the face plate 33 to remove the claw pieces 79 and unnecessary welding beads. The head 87 according to the present embodiment is configured as described above.
As with 7, it is possible to achieve the intended purpose,
According to the manufacturing method of the present embodiment described above, when the face plate 33 is attached, the claw pieces 79 sandwich the face plate 33 to prevent the face plate 33 from shifting in the vertical direction, and the claw pieces 79 are attached to the head main body 21-1. In order to positively prevent the occurrence of a step between the face plate 33 and the side portion 27 while providing an appropriate gap required for welding between the head 87 and the face plate 33, the head 87 having the above-described operation and effect is provided. In manufacturing, it is possible to ensure quality stability and productivity improvement.

Also, in the manufacturing method according to the present embodiment, the face plate 33 can be temporarily fixed to the head main body 21-1 by melting each of the claw pieces 79. Therefore, it is necessary to separately use a welding material for temporary fixing. There are no advantages.

In each of the above-described embodiments, the claw pieces 79 are formed so as to be able to hold the outer circumferences of the face plates 33 and 59. However, the face plate is accommodated inside the claw pieces and the face plate is held by the claw pieces. If it can be positioned and held, there may be some margin between the claw piece and the face plate, or the claw piece may be pressed and deformed from the outside to pinch the face plate.

Furthermore, in each of the above-described embodiments, the nail pieces 79 are melted to temporarily fix the face plates 33, 59 to the head main bodies 21, 43, 21-1.
The face plates 33 and 59 may be temporarily fixed by using a welding material. The face plates 33 and 59 are further housed inside the claws 79 and welded together without performing the temporary fixing. Is also good.

[0068]

As described above, according to the head according to the first to fifth aspects, the top and sole sides of the face member are butted and welded to the head main body, whereby the face member is firmly fixed. Also, unlike the conventional "butt type", the welded portion on the toe side of the face member has flexibility without causing a decrease in strength, and responds to bending.

Further, since it is not necessary to increase the number of weld beads, the impact at the time of hitting is easily transmitted to the head main body, and the side portion, which is thinner than the face member bulged outward, absorbs the impact at the time of hitting. And has an advantage that a soft feel at impact can be obtained. According to the second aspect of the present invention, by providing the flange, the mounting strength of the face plate is improved, a softer feel at impact is obtained, and the positioning at the time of welding becomes easier. Since a reliable welding operation can be performed and the influence of heat at the time of welding on the striking surface of the face plate is reduced, there is an advantage that the original strength and repulsive force of the face plate can be obtained.

On the other hand, according to the method of manufacturing the head according to the sixth to eleventh aspects, it is possible to easily manufacture the head having the above-described effects, but the invention according to the eighth to eleventh aspects According to the head manufacturing,
It is possible to surely stabilize quality and improve productivity.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a head according to a first embodiment of the present invention.

FIG. 2 is an overall perspective view of a head according to a first embodiment of the present invention.

FIG. 3 is a sectional view of the head shown in FIG. 2;

FIG. 4 is a sectional view of the head shown in FIG. 2;

FIG. 5 is a schematic view showing deflection of the face plate in the toe and heel directions.

FIG. 6 is a schematic diagram showing bending of the face plate in the top and sole directions.

FIG. 7 is an exploded perspective view of a head according to an embodiment of the present invention.

FIG. 8 is an overall perspective view of a head according to an embodiment of the present invention.

FIG. 9 is a sectional view of the head shown in FIG. 8;

FIG. 10 is a sectional view of the head shown in FIG. 8;

FIG. 11 is an exploded perspective view of a head according to a second embodiment of the present invention.

FIG. 12 is an overall perspective view of a head according to a second embodiment of the present invention.

FIG. 13 is a cross-sectional view of the head shown in FIG.

FIG. 14 is a sectional view of the head shown in FIG.

FIG. 15 is an overall perspective view of a head according to an embodiment of the present invention.

16 is a cross-sectional view of the head shown in FIG.

17 is a sectional view of the head shown in FIG.

18 is a process chart of the method for manufacturing the head shown in FIG.

FIG. 19 is a process chart of the manufacturing method of the head shown in FIG.

20 is a process chart of the method for manufacturing the head shown in FIG.

21 is a process chart of the method for manufacturing the head shown in FIG.

FIG. 22 is an overall perspective view of a head according to an embodiment of the present invention.

FIG. 23 is a sectional view of the head shown in FIG. 22;

FIG. 24 is a sectional view of the head shown in FIG. 22;

FIG. 25 is a process chart of the method for manufacturing the head shown in FIG. 22.

26 is a process chart of the method for manufacturing the head shown in FIG. 22.

FIG. 27 is a process chart of the method of manufacturing the head shown in FIG. 22.

FIG. 28 is a process chart of the method for manufacturing the head shown in FIG. 22.

FIG. 29 is an overall perspective view of a head according to an embodiment of the present invention;

30 is a sectional view of the head shown in FIG. 29.

FIG. 31 is a process chart of the method for manufacturing the head shown in FIG. 29.

32 is a process chart of the method of manufacturing the head shown in FIG. 29.

FIG. 33 is a process chart of the method for manufacturing the head shown in FIG. 29.

FIG. 34 is a process drawing of the method for manufacturing the head shown in FIG. 29.

35 is a process chart of the method for manufacturing the head shown in FIG. 29.

FIG. 36 is a process chart of the method for manufacturing the head shown in FIG. 29.

FIG. 37 is a sectional view of a conventional head.

FIG. 38 is a cross-sectional view of another conventional head.

FIG. 39 is a schematic diagram illustrating a joining relationship between a head body and a face member whose side portions bulge outward.

FIG. 40 is an enlarged cross-sectional view of a main part of a mounting structure of a head body and a face member whose side portions bulge outward.

[Explanation of symbols]

 21, 43, 21-1 Head main body 23, 47, 23-1 Face side opening 27, 51 Side 29, 53 Sole 33, 59 Face plate 35, 57, 35-1, 77, 85, 87 Head 36 , 37, 65, 67 Notch 45 Face 61, 63 Flange 73 Edge 75 Receiving surface 79 Nail piece

Claims (11)

[Claims] 1. A hollow metal golf club head in which a face member is welded to a face-side opening of a head body in which a side portion is bulged outward, at least a toe side of the side portion is a face member. At least the toe side of the toe and heel sides of the face member is fitted into the face side opening of the head body, and the toe side edge is welded to the front side of the head body, and the top of the face member is formed. A golf club head characterized in that the side and the sole are abutted against the head body at the periphery of the face side opening, and the top and sole sides are welded to the upper and lower sides of the head body. 2. The golf club head according to claim 1, wherein at least one of the top side and the sole side of the face member is provided with a flange protruding toward the back side of the head body. 3. The golf club head according to claim 1, wherein the face member is formed to have a width equal to or smaller than a width of the head body on the face side in the toe and heel directions. 4. A plurality of claw pieces protruding forward from the head body are integrally formed on the outer peripheral edges of the top side and the heel side of the face side opening of the head body, and each of the claw pieces is used to top the face member. Holding the sole side, butting the top side and the sole side of the face member against the head body at the periphery of the opening on the face side, and welding the top and sole edges of the face member on the upper and lower sides of the head body. The golf club head according to claim 1, wherein the golf club head is a golf club head. 5. The golf club head according to claim 4, wherein the claw piece is formed so as to be able to hold the face member. 6. A golf club head manufacturing method for manufacturing a hollow metal golf club head by welding a face member to a face-side opening of a head body having a side portion bulged outward. At least the toe side of the side part is formed thinner than the face member, and at least the toe side of the toe and heel sides of the face member are fitted into the face side opening of the head main body, and the toe side peripheral portion is the front face of the head main body. A golf club characterized in that the top side and the sole side of the face member abut against the head body at the periphery of the face side opening, and the top and sole side edges are welded at the top and bottom sides of the head body. Head manufacturing method. 7. A flange protruding toward the back side of the head body is formed on at least one of the top side and the sole side of the face member, and the flange is abutted against the head body around the face side opening, 7. The method for manufacturing a golf club head according to claim 6, wherein the front end of the flange is welded to upper and lower sides of the head body. 8. A plurality of claw pieces protruding forward from the head body are integrally formed on the top side and the outer peripheral edge of the heel side of the face side opening of the head body, and the claw pieces are used to form the top of the face member. 8. The golf club head manufacturing method according to claim 6, wherein the top and sole side edges of the face member are welded to upper and lower sides of the head body while holding the sole side. 9. A method in which claw pieces are formed so as to be able to hold a face member, and the top and bottom sides of the face member are welded to the upper and lower sides of the head body while holding the face member between the respective claw pieces. 9. The method of manufacturing a golf club head according to claim 8, wherein: 10. The golf club according to claim 8, wherein after the face member is supported and sandwiched by the claw pieces, the face member is welded to each of the claw pieces to temporarily fix the face member. Head manufacturing method. 11. The method for manufacturing a golf club head according to claim 8, wherein the claw pieces are removed after the face member is welded.