JP3750848B2 - Golf club head and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a hollow metal golf club head.
[0002]
[Prior art]
  In recent years, golf club heads called wood have been made hollow with metal materials such as titanium and titanium alloys instead of natural wood such as straw and cherry blossoms from the standpoints of quality stability and ease of material supply. A golf club head (hereinafter referred to as “head”) formed in the above is known. Recently, a head in which an opening is provided on the face side of the head body and a face member made of a material and a structure suitable for hitting is welded to the opening is widely used.
[0003]
  Thus, as a mounting structure of the face member to the head body, as shown in Japanese Patent Laid-Open No. 8-280853 or FIG. 37, the face member 5 is fitted into the face side opening 3 of the head body 1 to A peripheral member welded to the head main body 1 (so-called “fitting type”), or a face member 11 is put on the face side opening 9 of the head main body 7 as shown in Japanese Patent Laid-Open No. 9-28842 or FIG. In other words, a head body 7 at the periphery of the face-side opening 9 is abutted against the back side of the face member 11 and the periphery of the face member 11 is welded to the head body 7 (so-called “butt type”) is known. ing.
[0004]
  37 is known to have a lower attachment strength with respect to the shearing force at the time of hitting, compared to the butting type of FIG. 38 in which the head body 7 is butted against the back surface side of the face member 11.
  By the way, in recent years, in order to improve the flight distance and direction of the hit ball,headHeads with a larger volume and a larger moment of inertia at the time of hitting have become mainstream, and as a result, the entire head tends to be thinner.
[0005]
  However, even if the overall thickness of the head is reduced in this way, there is a limit to the reduction in the thickness of the face member in terms of strength, and the face member cannot be reduced in the same manner as the head body.
[0006]
  For this reason, the face member cannot be enlarged in accordance with the enlargement of the head in order to suppress an increase in the weight of the entire head, and as a result, the side portion of the head main body is largely bulged outwardly, The volume is increased.
[0007]
[Problems to be solved by the invention]
  However, as a result of increasing the head volume by bulging the side portion outward in this manner, the side portion 15 of the head main body 13 is changed to the face member 17 as shown in FIG. It will come in contact with a gentle angle.
[0008]
For this reason, when the head body 13 and the face member 17 are attached as shown in FIG. 40, when the side portion 15 of the head body 13 is abutted against the back surface of the face member 17 and welded as in the attachment structure of FIG. As shown by the broken line, if the edge (ridgeline) 19 is made by scraping the peripheral portion of the face member 17 in the finishing process, the thickness of the face member 17 at the welded portion is reduced, and the portion is stronger than the face member 17. However, it has been pointed out that the strength is lowered because the welding material is inferior, and the position of the edge 19 is slightly shifted for each product, the face shape varies, and the quality cannot be made uniform.
[0009]
  Further, in order to prevent the welded portion from being thinned, a large amount of the weld bead 21 is also provided. However, if the weld bead 21 is enlarged in this way, the toe and heel directions of the head main body 13 are heavy. As a result, the weight balance of the head is hindered, and there is a possibility that the large weld bead 21 restricts the bending of the face member 17 and a soft shot feeling cannot be obtained.
[0010]
  The present invention has been devised in view of such circumstances, and the side portion is bulged outward.headIt is an object of the present invention to provide a head and a method of manufacturing the head which can satisfactorily attach to the face member by solving the above-described problems when welding the face member to the head body whose volume is increased.
[0011]
[Means for Solving the Problems]
  In order to achieve such an object, the invention according to claim 1In a hollow metal head in which a face member is welded to a face side opening provided in a head body, the face width is 1.15. Increase the head volume by bulging the side part of the head body outward so as to have a head width more than doubled.At least the side part located on the toe side of the head body is made thinner than the face memberAs well asFit at least the toe side of the toe and heel side of the face member into the face side opening of the head body, and weld the toe side periphery to the head body.AndThe top and sole sides of the face member are abutted against the head body at the periphery of the face-side opening, and the top and sole-side periphery is welded to the head body.
[0012]
  According to a second aspect of the present invention, in the head according to the first aspect, a flange projecting toward the back side of the head body is provided on at least one of the top side and the sole side of the face member. It is characterized by being.
[0013]
  The invention according to claim 3The head volume was increased by enlarging the side part outward so that it had a head width of 1.15 times or more the face width.A face member is welded to the face side opening of the head body.AndA head manufacturing method for manufacturing a hollow metal head, wherein at least a toe side of a side portion located on a toe side of a head body is formed thinner than a face member, and the top of a face side opening of a head body A plurality of claw pieces projecting forward of the head main body are integrally formed on the outer peripheral edge of the side and the sole side, and each claw pieceThe face member is press-fitted along the inner surface side of the head, and an appropriate gap necessary for welding is opened between the head body and the face member, so that no step is generated between the face member and the side portion. After positioning and holding the face member in place with a nail piece,The claw piece is removed by welding the peripheral edge of the face member to the head body.
[0014]
  According to a fourth aspect of the present invention, in the head manufacturing method according to the third aspect, at least one of the top side and the sole side of the face member is provided with a flange that protrudes toward the back side of the head body. Forming,The face member is press-fitted along the inner surface side of each claw piece, and an appropriate gap necessary for welding is opened between the head body and the face member, so that no step is generated between the face member and the side portion. After positioning and holding the face member at a predetermined position with nail pieces,The head of the flange portion is welded to the head main body, and the invention according to claim 5 is the method of manufacturing a head according to claim 3 or claim 4,The face member is press-fitted along the inner surface side of each claw piece, and an appropriate gap necessary for welding is opened between the head body and the face member, so that no step is generated between the face member and the side portion. Position and hold the face member at a predetermined position with a claw pieceThen, the face member is temporarily fixed by welding the face member to each claw piece.
[0015]
    (Function)
  When a ball is hit with a golf club using the head according to claim 1 and claim 2, the head is enlarged in volume and has a large moment of inertia. As a result, the ball is bent using the deflection of the face member. Fly in a good direction with a sufficient flight distance.
[0016]
  When the ball is hit, an impact is applied to the peripheral portion of the face member, that is, the attachment portion with the face side opening of the head main body, but the thin side portion of the head main body bulging outward is deformed. The impact applied to the welded portion of the toe and heel side peripheral portions of the face member is absorbed, and the head main body firmly supports the top and sole side peripheral portions of the face member.
[0017]
  Further, according to the head according to claim 2, the head main body against which the collar portion abuts against the impact applied to the welded portion on the top and sole side peripheral portions of the face member firmly supports the face member, and the collar portion is provided. Since the welded part is provided at a distance behind the head edge, bending strength is not applied to the welded part when hitting the ball, and the strength is improved and the face member is welded to the head body via the flange. Therefore, the bending of the face member is not restricted by the thick portion of the weld bead, and a softer feel at impact can be obtained.
[0018]
  According to the manufacturing method according to claims 3 to 5, the face member is press-fitted along the inner surface side of each claw piece, and an appropriate gap necessary for welding is provided between the head body and the face member. After opening, the face member is positioned and held at a predetermined position with a claw piece so that no step is generated between the face member and the side part, and then the peripheral edge portion of the face member is welded to the head body. By removing, the vertical displacement of the face member can be prevented, and the occurrence of a step between the face member and the head body can be prevented.
[0019]
  In the manufacturing method according to claim 4, when the face member is attached, the face member is press-fitted along the inner surface side of each claw piece, the face member is sandwiched between the claw pieces, and then the face member is attached to each claw piece. The face member can be temporarily fixed to the head body by welding the members.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 show a head according to the first embodiment of the present invention. In FIG. 1, reference numeral 21 denotes a top portion 25, a side portion 27, a sole portion 29, and a hosel portion 31 except a face side opening portion 23, and a titanium alloy. In order to increase the head volume, the side portion 27 bulges outwardly and is 1 to the face width in order to increase the head volume. When the head width is 1.2 times or more than the face width, a large moment of inertia can be obtained at the time of hitting the ball. The head main body 21 excluding the hosel part 31 is formed thinner than the face plate (face member) 33 described later, including the side part 27 located on the toe side.
[0022]
  Then, the face-side opening 23 is welded with a face plate 33 which is slightly shorter than the face-side opening 23 and made of a plastic material such as forging or press-molding made of a metal material such as a titanium alloy. The head 35 shown is formed.
[0023]
  The face plate 33 isThe toe side and the heel side are fitted into the face side opening 23 of the head body 21, and the toe and heel side periphery is welded to the front side of the head body 21, that is, the face side of the head body 21. The top side and the sole side are butted against the head body 21 at the periphery of the face-side opening 23, and the top and sole side peripheral parts are welded to the top and bottom sides of the head body 21, that is, the top portion 25 and the sole portion 29 of the head body 21. The face side opening 23 is attached.
[0024]
  That is, as shown in FIGS. 1 and 3, the top portion 25 and the sole portion 29 of the head body 21 along the face-side opening 23 have a depth slightly larger than the thickness of the top and sole-side peripheral portions of the face plate 33. Notches 36 and 37 having a thickness are provided, and 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. 2 to 4, the top of the face plate 33, The top portion 25 and the sole portion 29 of the head main body 21 are abutted with the back surface side of the sole side peripheral portion, respectively.
[0025]
  37, in the present embodiment, the toe side and the heel side peripheral portion of the face plate 33 are arranged on the front side of the head main body 21 as shown in FIG. 4, that is, as described above. The toe side and the heel side peripheral portion of the face plate 33 on the face side of the main body 21 are welded to the side portion 27 and the face portion, respectively, and the face plate 33 as shown in FIG. The top side and the sole side peripheral part of the face plate are butted against the head main body 21 and welded at the top and bottom sides thereof, that is, the top part 25 and the sole part 29. The top side of the face plate 33 and the back side of the sole side peripheral part are respectively The side portion which is abutted against and fixed to the top portion 25 and the sole portion 29 of the head body 21 and which is located on the toe side of the head body 21 as shown in FIG. 7 because of the large bulge outward, the side portion 27 becomes continuously provided the structure at a moderate angle to the face plate 33.
[0026]
  In addition, in FIG.3 and FIG.4, 39 and 41 are welding beads.
  Since the present embodiment is configured as described above, when the ball is hit with a golf club using the head 35, the head 35 isheadThe volume is increased to have a large moment of inertia, and as a result, the face plate 33 is microscopically bent, and the ball flies with a sufficient flying distance and good direction using this bending.
[0027]
  Thus, at the time of this hitting, an impact is applied to the peripheral portion of the face plate 33, that is, the attachment portion with the face side opening 23 of the head main body 21, but the thin toe of the head main body 21 bulging outwards greatly. , While the heel side portion 27 is deformed, the shock applied to the toe of the face plate 33 and the welded portion at the heel side peripheral portion is absorbed to reduce the shearing force, and the top and sole side peripheral portions of the face plate 33 are also absorbed. The top portion 25 and the sole portion 29 of the head main body 21 that abuts the impact on the welded portion against the back side of each peripheral edge firmly support the face plate 33.
[0028]
  As described above with reference to FIGS. 37 and 38, the so-called “filling type” has a lower mounting strength against the shearing force at the time of hitting ball than the “butting type”, but as described above, the face in this embodiment The welding part on the toe side (heel side) of the plate 33 is the conventional one."Insertion type"Since the direction of the face and the toe side (heel side) of the face side opening 23 of the head body 21 is closer to that of the head body 21, impact at the time of hitting the ball is easily transmitted to the head body 21. Then, while the thin side portion 27 of the head main body 21 bulging outward is deformed, the impact applied to the welded portion of the toe and heel side peripheral portion of the face plate 33 is absorbed to reduce the shearing force. 5 and 6, when the face plate 33 bends at a depth M during hitting, as shown in FIG. 5, the deformation of the face plate 33 in the toe and heel directions is the top and sole directions shown in FIG. As shown in FIG. 4, the toe side and the heel side peripheral portion of the face plate 33 are arranged on the front side of the head body 21 as shown in FIG.(The face side of the head body 21)Even if it is a “fitting type” mounting structure welded to the side portion 27, there is no problem in strength.
[0029]
  Since the top portion 25 and the sole portion 29 do not have a structure that bulges outward as compared with the side portion 27, in the present embodiment, the top side and the sole side peripheral portion of the face plate 33 are arranged above and below the head body 21. Adopting a “butt-type” mounting structure welded on the side, the mounting strength at the site is ensured.
  Therefore, according to the head 35 according to the present embodiment,A large moment of inertia can be obtained by increasing the head volume, and as described above, the “fitting type” in which 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 body 21. Even if it is a mounting structure, there is no problem in strength,There is no need to cut the toe and heel side edges of the face plate 33 in the finishing process as in the conventional “butting type”, so that the thickness of the welded portion is not reduced and the strength is not reduced.AsThe edge position is not shifted and the face shape does not vary, and the quality can be made uniform.
[0030]
  Further, according to the present embodiment, since it is not necessary to provide a large amount of the weld bead 41 in order to prevent the welded portion from being thinned, the weight balance of the head 35 is not hindered, and a large amount of the weld bead is provided. 41 has the advantage that a soft feel at impact is obtained without restricting the bending of the face plate 33.
  In addition, since the face plate 33 is thinner in the periphery than the center, it can absorb the impact at the time of hitting and can make the hit feeling softer.
[0031]
  7 to 10 show the head according to the first embodiment of claims 1 and 2, in which 43 denotes the face portion 45 and the top portion except for the face side opening 47 provided in the face portion 45. 49, the side portion 51, the sole portion 53, the hosel portion 55, etc. are hollow head bodies that are precision-cast integrally with a metal material such as titanium alloy or stainless steel, and the head 57 according to this embodiment also has a large head volume. In order toOf the head body 43Side 51 bulges outward,The head width is 1.15 times or more than the face width.
  The head main body 43 excluding the hosel portion 55 and the face portion 45 is formed thinner overall than a face plate 59 described later.
[0032]
  As shown in FIG. 7, the face side opening 47 opens at a substantially central part in the toe and heel directions of the face 45, and a face plate 59 made of the same material as the face plate 33 described above is formed in the face side opening 47. Welded.
  Thus, as shown in FIGS. 7 and 9, the face plate 59 is provided with flanges 61 and 63 projecting in the back direction of the head main body 43 on the top and sole sides, while on the other hand, as shown in FIG. The portion 45 is gradually formed thicker from the toe and heel side toward the center and smoothly continues to the face plate 59, and the face plate 59 also continues smoothly to the thin side portion 51. Concentration can be prevented, and the rebound of the face portion 45 can be obtained without being damaged, and the feel at impact is soft.
[0033]
  Further, as shown in FIGS. 7 and 9, the top portion 49 and the sole portion 53 of the head main body 43 along the face side opening 47 have a depth slightly larger than the width of the flange portions 61 and 63. Notches 65 and 67 are formed. When the toe side and the heel side of the face plate 59 are fitted into the face side opening 47 as shown in FIGS. 7 and 10, the flanges 61 and 63 are respectively The head body 43 abuts on the top portion 49 and the sole portion 53.
[0034]
  Thus, the head 57 according to this embodiment is configured such that 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. As shown in FIG. 9, the front ends of the flange portions 61 and 63 of the face plate 59 are abutted against the top portion 49 and the sole portion 53 of the head main body 43 so that the upper and lower sides of the head main body 43 are That is, it is manufactured by welding at the top portion 49 and the sole portion 53 of the head main body 43.
[0035]
  As shown in FIG. 10, since the side portion 51 on the toe side of the head main body 43 bulges outward, the side portion 51 is connected to the face portion 45 at a moderate angle. Yes.
  In addition, in FIG.9 and FIG.10, 69 and 71 are 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 is enlarged in volume and has a large moment of inertia. As a result, the face plate 59 The ball flies with good directivity at a sufficient flight distance using flexure.
[0036]
  When the ball is hit, an impact is applied to the peripheral portion of the face plate 59, that is, the attachment portion with the face side opening 47, but the thin toe and heel side side portions of the head body 43 bulge outward greatly. When 51 is deformed, the impact applied to the welded portion on the toe and heel side peripheral portions of the face plate 59 is absorbed to weaken the shearing force. However, since the deformation in the toe and heel directions is gentler than the deformation in the top and sole directions, the toe side and the heel side peripheral portion of the face plate 59 are welded to the front side of the head body 46 as shown in FIG. Even if it is a “fitting type” mounting structure, there is no problem in strength.
[0037]
  Further, the top portion 49 and the sole portion 53 of the head body 43 against which the flange portions 61 and 63 abut against the impact applied to the welded portion on the top and sole side peripheral portion of the face plate 59 firmly supports the face plate 59. In this embodiment, the flange portions 61 and 63 are provided on the top and sole sides of the face plate 59, and the welded portion is provided at a distance from the edge 73 of the head 57 (face plate 59). Compared to the above embodiment, the bending stress is not applied to the welded portion at the time of hitting and the strength is improved, and the face plate 59 is welded to the head main body 43 through the flange portions 61 and 63. As compared with the structure in which the thick portion by the weld bead 39 is formed on the top and sole sides of the face plate 33 as described above, the bending of the face plate 59 is not restricted. So that the shift shot feeling is obtained.
[0038]
  Therefore, according to the present embodiment, the intended purpose can be achieved as in the embodiment of FIG. 1, and according to the present embodiment, the mounting strength of the face plate 59 is further improved and the softening is further improved. In addition, the provision of the flange portions 61 and 63 facilitates the positioning during welding so that a reliable welding operation can be performed, and further, the ball hitting surface of the face plate 59 due to heat during welding is provided. Therefore, the original strength and repulsive force of the face plate 59 can be obtained.
[0039]
  FIGS. 11 to 14 show a second embodiment of the head according to the first aspect. This embodiment is not limited to the configuration of the head 35 of FIGS. 1 to 4, and the toe side and the heel of the face side opening 23-1. Along the side, a receiving surface 75 of the face plate 33 having a thickness near the center and a thickness substantially the same as the side portion 27 is provided with a certain width in the top and sole directions. As shown in FIG. 14, in order to prevent the receiving surface 75 from restricting the bending of the face plate 33, the face plate 33 is a head on the front side of the head body 21-1, that is, on the face side of the head body 21-1. The face plate 33 is welded to the main body 21-1, and has a structure in which the face plate 33 is simply in contact with the receiving surface 75.
[0040]
  Other configurations are the same as those of the first embodiment shown in FIGS.The head 35 according to the present embodiment -1 However, in order to increase the head volume, the head body 21 -1 Is formed such that the side portion 27 bulges outward and has a head width of 1.15 times or more the face width. In the following, the same components are denoted by the same reference numerals, and description thereof is omitted.
  Thus,Also in the head 35-1, the face plate 33 is attached by fitting the toe side and the heel side of the face plate 33 into the face side opening 23-1 of the head main body 21-1, and the toe and heel sides. Each of the peripheral portions is welded to the side portion 27 and the face portion on the front side of the head main body 21-1, that is, the face side of the head main body 21-1, as described above, and the top side and the sole side are welded. The top and sole side peripheral portions are welded to the top and bottom sides of the head main body 21-1, that is, the top portion 25 and the sole portion 29, in contact with the head main body 21-1 at the periphery of the face side opening 23-1. Done.
[0041]
  Since the head 35-1 according to the present embodiment is configured in this way, it is possible to achieve the intended purpose also by the present embodiment, as in the first embodiment of FIGS. 1 to 4. Of course, since the receiving surface 75 supports the toe side and the heel side of the face plate 33 at the time of hitting, the mounting strength of the face plate 33 is further improved compared to the first embodiment, and the receiving surface 75 is provided. As a result, positioning during welding is facilitated, and there is an advantage that reliable welding work can be performed.
[0042]
  In each of the above embodiments, a head body having an opening on the face side is precisely cast, and a face plate is attached thereto. The top portion, the side portion, the sole portion, the face plate, etc. are respectively provided. Of course, it can be applied to a head formed by forging or pressing and welded.
[0043]
  FIGS. 15 to 17 show a head according to a third embodiment of claim 1, and the head 77 according to this embodiment also has a face side opening on the toe side and the heel side of the face plate 33, similar to the head 35 of FIG. 2. The toe and heel side peripheral edge is welded to the front side of the head body 21, that is, the face side of the head body 21, and the top side and the sole side of the face plate 33 are cut off of the head body 25. The top and sole side peripheral edge portions are welded to the top and bottom sides of the head main body 21, that is, the top portion 25 and the sole portion 29 of the head main body 21 in contact with the notches 36 and 37. In the form of manufacturing the head 77, a plurality of claw pieces are provided on the head main body 21, and the face plate 33 is sandwiched between the claw pieces.
[0044]
  That is, as already 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 body 21 along the face-side opening 23 are the top and sole sides of the face plate 33. It is formed with a depth slightly larger than the thickness of the peripheral edge.
  For this reason, when the face plate 33 is attached, if the top portion 25 and the sole portion 29 of the head body 21 are abutted against the top of the face plate 33 and the back surface side of the periphery on the sole side, a step is formed between the face plate 33 and the side portion 27. May occur. Further, since there is no means for restricting the vertical displacement of the face plate 33, the alignment is troublesome at the time of mounting.
[0045]
  Therefore, in the present embodiment, the head main body 21 is provided with a plurality of claw pieces 79, and when the face plate 33 is attached, the top side and the sole side of the face plate 33 are sandwiched between the claw pieces 79 to prevent vertical displacement. In addition, a moderate gap necessary for welding is opened between the head body 21 and the face plate 33, and the face plate 33 is positioned by actively preventing the occurrence of a step between the face plate 33 and the side portion 27. The head 77 is manufactured as follows by the first embodiment of the manufacturing method according to claims 3 and 5.
[0046]
  In addition, the same code | symbol is attached | subjected to the thing same as embodiment of FIG. 1, and those description is abbreviate | omitted.
  First, as shown in FIG. 18, at the time of casting the head main body 21, a plurality of claw pieces 79 projecting forward from the head main body 21 are integrally formed on the outer peripheral edges of the notches 36 and 37, respectively.
[0047]
  The claw piece 79 has an outer shape formed in an arc shape in the front-rear direction of the head main body 21, and the inner surface side is formed on a flat surface flush with the outer peripheral edge portion of the face-side opening 23, as shown in FIGS. Further, each claw piece 79 fits the toe side and the heel side of the face plate 33 into the face side opening 23 of the head main body 21, and the top side and the sole side thereof to the head main body 21 at the periphery of the face side opening 23. At the time of abutment, the top side and the sole side of the face plate 33 are sandwiched to prevent vertical displacement thereof, and an appropriate gap necessary for welding is opened between the head body 21 and the face plate 33. The face plate 33 is positioned and held by positively preventing the occurrence of a step between the face plate 33 and the side portion 27.
[0048]
  Thus, after casting the head main body 21 in which the respective claw pieces 79 are integrally formed, the face plate 33 is press-fitted inside the claw pieces 79 along the inner surface side of each claw piece 79 as shown in FIG.
  Then, the face plate 33 is placed at a predetermined position so that no step is generated between the face plate 33 and the side portion 27 while an appropriate gap necessary for welding is opened between the head body 21 and the face plate 33. After the positioning and holding by the claw pieces 79, the tip side of each claw piece 79 is melted by a welding tool (nozzle) 81 as shown in FIG. Weld (temporarily fix).
[0049]
  Thereafter, as shown in FIG. 21, the welding material is melted along the gap between the head body 21 and the face plate 33 using the welding tool 81 and the welding rod 83, and the toe and heel side peripheral portions of the face plate 33 are obtained. Are welded on the face side of the head main body 21 and the top and sole side peripheral portions of the face plate 33 are welded on the top portion 25 and the sole portion 29 of the head main body 21 so that the welding material enters the gap. At this time, the claw piece 79 may be melted again and may be covered with the welding material and integrated with the welding material.
[0050]
  Then, after the end 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 head 77 can achieve the intended purpose as with the head 35 of FIG. When the face plate 33 is attached, the claw piece 79 sandwiches the face plate 33 to prevent the vertical displacement, and the claw piece 79 is welded between the head body 21 and the face plate 33. In order to positively prevent the occurrence of a step between the face plate 33 and the side portion 27 while opening a necessary moderate gap, quality can be stabilized and produced in the manufacture of the head 77 having the above-described effects. It is possible to reliably improve the performance.
[0051]
  In addition, as described above, the manufacturing method according to the present embodiment can melt each claw piece 79 and temporarily fix the face plate 33 to the head main body 21. Therefore, a welding material for temporary fixing is separately used. Has the advantage of not needing.
  22 to 24 show a head according to the second embodiment of claims 1 and 2, and the head 85 according to this embodiment has an opening at a substantially central portion of the face portion 45, similar to the head 57 of FIG. 8. The toe side and the heel side of the face plate 59 are fitted into the face side opening 47 to be welded, and the toe and heel side peripheral portions are welded to the face side of the head main body 43, and the flange portions 61 and 63 of the face plate 59 are welded. The top end of the head body 43 is abutted against the top portion 49 and the sole portion 53 of the head main body 43, and the tip end side is welded with the top portion 49 and the sole portion 53. In producing 85, claims 3 to 5OneAccording to the embodiment, a plurality of claw pieces are provided on the head main body 43, and the face plate 59 is sandwiched between the claw pieces.
[0052]
  That is, as already 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 47 are larger than the width of the flange portions 61 and 63. It is formed with a slightly large depth.
  For this reason, if the flange portions 61 and 63 are brought into contact with the top portion 49 and the sole portion 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 portion 45. In addition, since there is no means for restricting the vertical displacement of the face plate 59, alignment is troublesome at the time of mounting.
[0053]
  Therefore, this embodiment also has a plurality of claw pieces 79 in 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 to prevent vertical displacement. At the same time, a moderate gap necessary for welding is provided between the head main body 43 and the face plate 59, and the face plate 59 is positively prevented from generating a step between the face plate 59 and the face portion 45. The head 85 is sandwiched and positioned, and the head 85 is an inventing method according to claims 3 to 5.OneAccording to the embodiment, it is manufactured as follows.
[0054]
  In addition, the same code | symbol is attached | subjected to the thing same as embodiment of FIG. 7, and those description is abbreviate | omitted.
  First, as shown in FIG. 25, when the head main body 43 is cast, a plurality of claw pieces 79 projecting forward of the head main body 43 are integrally formed on the outer peripheral edge portions of the notches 65 and 67.
  As shown in FIG. 25, also in this embodiment, 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 the inner surface is flat with the outer peripheral edge of the face-side opening 47. 26 and 27, each claw piece 79 fits the toe side and the heel side of the face plate 59 into the face side opening 47 of the head body 43, and the top side thereof. When the flanges 61 and 63 provided on the sole side are abutted against the head main body 43 at the periphery of the face side opening 47, the top side and the sole side of the face plate 59 are sandwiched to prevent the vertical displacement. Further, a moderate gap necessary for welding is opened between the head main body 43 and the face plate 59, and the occurrence of a step between the face plate 59 and the face portion 45 is positively prevented to prevent the face plate 59. Positioning, so as to hold.
[0055]
  Thus, after casting the head body 43 integrally formed with the claw pieces 79, the face plate 59 is press-fitted along the inner surface side of each claw piece 79 as shown in FIG.
  Then, with an appropriate gap necessary for welding between the head main body 43 and the face plate 59, the face plate 59 is nipped in 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. 27, the tip side of each claw piece 79 is melted with a welding tool 81, and the face plate 59 is temporarily welded to the head body 43 using this molten metal.
[0056]
  If a positioning jig is applied to the ball striking surface between the face plate 59 and the face portion 45, the ball striking surface can be easily positioned flush.
  Thereafter, as shown in FIG. 28, the welding material is melted along the gap between the head main body 43 and the face plate 59 using the welding tool 81 and the welding rod 83, and the toe and heel side peripheral portions of the face plate 59 are obtained. Are welded on the face side of the head main body 43 and the tips of the flange portions 61 and 63 of the face plate 59 are welded to the top portion 49 and the sole portion 53 of the head main body 43 so that the welding material enters the gap. At this time, the claw piece 79 may be melted again and may be covered with the welding material and integrated with the welding material.
[0057]
  Then, after the main welding is completed, the head 85 shown in FIG. 22 is manufactured by polishing along the periphery 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 head 85 can achieve the intended purpose similarly to the head 57 of FIG. According to the manufacturing method, when the face plate 59 is attached, the claw piece 79 sandwiches the face plate 59 to prevent the vertical displacement thereof, and the claw piece 79 is interposed between the head main body 43 and the face plate 59. In order to positively prevent the occurrence of a step between the face plate 59 and the face portion 45 while providing an appropriate gap necessary for welding, in the manufacture of the head 85 having the above-described effects, the quality is stabilized. In addition, it is possible to reliably improve productivity.
[0058]
  Also, the manufacturing method according to the present embodiment has an advantage that the face plate 59 can be temporarily fixed to the head main body 43 by melting the claw pieces 79, and there is no need to use a welding material for temporary fixing. .
  29 and 30 show a head according to a fourth embodiment of claim 1, and the head 87 according to this embodiment is similar to the head 35-1 in FIG. 12, and the toe side and the heel of the face side opening 23-1. A receiving surface 75 of the face plate 33 is formed with a certain width in the top and sole directions along the side, with a thickness near the center and a thickness substantially equal to that of the side portion 27 at the top and the sole. And the toe and heel side peripheral portions are welded to the side portion 27 and the face portion, and the top side and the sole side peripheral portion of the face plate 33 are connected to the top portion 25 and the sole portion of the head body 21. In this embodiment, when the head 87 is manufactured, a plurality of claw pieces are provided on the head main body 21-1, and the face plate 33 is held by each claw piece.
[0059]
  Thus, the head 87 is manufactured as follows by the second embodiment of the manufacturing method according to claims 3 and 5.
  In addition, the same code | symbol is attached | subjected to the thing same as embodiment of FIG. 11, and those description is abbreviate | omitted.
  First, as shown in FIG. 31, when the head main body 21-1 is cast, a plurality of claw pieces 79 projecting forward from the head main body 21-1 are integrally formed on the outer peripheral edges of the notches 36 and 37, respectively.
[0060]
  The claw piece 79 has an outer shape formed in an arc shape in the front-rear direction of the head main body 21-1, and the inner surface side is formed on a flat surface flush with the outer peripheral edge portion of the face-side opening 23-1, as shown in FIG. Thus, each claw piece 79 is brought into contact with the receiving surface 75 of the face plate 33 so that its toe side and heel side are fitted into the face side opening 23 of the head body 21-1, and its top side and sole side Is faced to the head body 21-1 at the periphery of the face-side opening 23-1, the top side and the sole side of the face plate 33 are clamped to prevent the vertical displacement thereof, and the head body 21-1. While an appropriate gap necessary for welding is formed between the face plate 33 and the face plate 33, the face plate 33 is positioned and held while positively preventing a step between the face plate 33 and the side portion 27. Yes.
[0061]
  Further, 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. When the face plate 33 is brought into contact with the receiving surface 75, the face plate A gap is formed between 33 and the notch 36.
[0062]
  Thus, after casting the head main body 21-1 integrally formed with the claw pieces 79, the face plate 33 is moved along the inner surface side of the claw pieces 79 as shown in FIGS. Press fit inside.
  Then, after the face plate 33 is brought into contact with the receiving surface 75 and the toe side and the 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 by a welding tool 81, and the face plate 33 is temporarily welded to the head body 21-1 using this molten metal.
[0063]
  36, 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, as shown in FIG. The peripheral portion is welded on the face side of the head body 21-1, and the top and sole side peripheral portions of the face plate 33 are welded on the top portion 25 and the sole portion 29 of the head body 21-1, so that the welding material is placed in the gap. Infiltrate. At this time, the claw piece 79 may be melted again and may be covered with the welding material and integrated with the welding material.
[0064]
  Then, after the end of the main welding, the head 87 shown in FIG. 29 is manufactured by polishing along the periphery of the face plate 33 and removing the claw pieces 79 and unnecessary welding beads.
  The head 87 according to the present embodiment is configured in this way, and the head 87 can achieve the intended purpose as with the heads 35 to 17 in FIG. According to the manufacturing method of the embodiment, when the face plate 33 is attached, the claw piece 79 sandwiches the face plate 33 to prevent the vertical displacement thereof, and the claw piece 79 is connected to the head main body 21-1 and the face plate 33. In the manufacture of the head 87 having the above-described effects in order to positively prevent the occurrence of a step between the face plate 33 and the side portion 27 while providing a moderate gap necessary for welding between the two. Therefore, it is possible to reliably achieve stable quality and improved productivity.
[0065]
  In addition, the manufacturing method according to the present embodiment also has an advantage that it is not necessary to separately use a welding material for temporary fixing, since each claw piece 79 can be melted and the face plate 33 can be temporarily fixed to the head main body 21-1. Have
[0066]
  In each of the above-described embodiments, the claw piece 79 is formed so that the outer periphery of the face plates 33 and 59 can be clamped. However, the face plate is placed inside the claw piece and the face plate is positioned by the claw piece. As long as it can be held, there may be some margin between the claw piece and the face plate, and the claw piece may be pressed and deformed from the outside to sandwich the face plate.
[0067]
  Furthermore, in each of the above-described embodiments, the claw pieces 79 are melted and the face plates 33, 59 are temporarily fixed to the head bodies 21, 43, 21-1, but the claw pieces 79 and the face plates 33, 59 are attached to each other. It may be temporarily fixed using a welding material, and the face plates 33 and 59 may be accommodated inside the claws 79 and welded to each other without the temporary fixing.
[0068]
【The invention's effect】
  As described above, according to the heads of claims 1 and 2,As a result of enlarging the side part to increase the head volume so as to have a head width of 1.15 times or more the face width, a large moment of inertia is obtained at the time of hitting.
  Also,When the ball is hit, an impact is applied to the peripheral portion of the face member, that is, the attachment portion with the face side opening of the head main body, but the thin side portion of the head main body bulging outward is deformed. The impact applied to the welded portions of the toe and heel side peripheral portions of the face member is absorbed, and the head main body firmly supports the top and sole side peripheral portions of the face member.
  For this reason, even if it is a “fitting type” mounting structure in which the toe side of the face member and the peripheral edge of the heel side are welded on the face side of the head body, there is no problem in strength, and the head Since the top and sole parts of the main body are not structured to bulge outward compared to the side parts, the top side peripheral part and sole side peripheral part of the face member are welded at the top part and sole part of the head main body. By adopting the “type” mounting structure, it is possible to maintain the mounting strength at the site.
  In addition, compared to the case where the toe side periphery of the face member is attached to the head body with the conventional “butting type”, the welded portion on the toe side of the face member does not cause a decrease in strength and is flexible and flexible. Correspond.
[0069]
  MoreIn addition, since it is not necessary to place a large number of weld beads, the impact at the time of hitting ball is easily transmitted to the head body, and the side part which is thinner than the face member bulged outward absorbs the impact at hitting ball and is soft. There is an advantage that a shot feeling can be obtained.
  According to the invention according to claim 2, by providing the flange portion, the mounting strength of the face plate is improved, a softer shot feeling is obtained, and positioning during welding is facilitated. A reliable welding operation can be performed, and furthermore, the influence on the hitting surface of the face plate due to heat during welding is reduced, so that the original strength and repulsive force of the face plate can be obtained.
[0070]
  On the other hand, according to the method for manufacturing a head according to claims 3 to 5, it is possible to easily manufacture a head that exhibits the above-described effects, and in the manufacture of the head, Since it is possible to positively prevent a step between the face member and the side portion of the head body, it is possible to reliably achieve stable head quality and improved productivity.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a head according to a first embodiment of claim 1;
FIG. 2 is an overall perspective view of a head according to a first embodiment of claim 1;
3 is a cross-sectional view of the head shown in FIG.
4 is a cross-sectional view of the head shown in FIG.
FIG. 5 is a schematic view showing the bending of the face plate in the toe and heel directions.
FIG. 6 is a schematic view showing the bending of the face plate in the top and sole directions.
7 is an exploded perspective view of the head according to the first embodiment of claims 1 and 2. FIG.
FIG. 8 is an overall perspective view of the head according to the first embodiment of claim 1 and claim 2;
9 is a cross-sectional view of the head shown in FIG.
10 is a cross-sectional view of the head shown in FIG.
FIG. 11 is an exploded perspective view of a head according to a second embodiment of claim 1;
12 is an overall perspective view of a head according to a second embodiment of claim 1. FIG.
13 is a cross-sectional view of the head shown in FIG.
14 is a cross-sectional view of the head shown in FIG.
FIG. 15 is an overall perspective view of a head according to a third embodiment of claim 1;
16 is a cross-sectional view of the head shown in FIG.
17 is a cross-sectional view of the head shown in FIG.
FIG. 18According to the first embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 19According to the first embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 20According to the first embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 21According to the first embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 22 is an overall perspective view of a head according to a second embodiment of claims 1 and 2;
23 is a cross-sectional view of the head shown in FIG.
24 is a cross-sectional view of the head shown in FIG.
FIG. 25According to one embodiment diagram of claims 3 to 5It is one process figure of the manufacturing method of a head.
FIG. 26According to one embodiment diagram of claims 3 to 5It is one process figure of the manufacturing method of a head.
FIG. 27According to one embodiment diagram of claims 3 to 5It is one process figure of the manufacturing method of a head.
FIG. 28According to one embodiment diagram of claims 3 to 5It is one process figure of the manufacturing method of a head.
FIG. 29 is an overall perspective view of a head according to a fourth embodiment of claim 1;
30 is a cross-sectional view of the head shown in FIG. 29. FIG.
FIG. 31According to the second embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 32According to the second embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 33According to the second embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 34According to the second embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 35According to the second embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 36According to the second embodiment of claim 3 and claim 5It is one process figure of the manufacturing method of a head.
FIG. 37 is a cross-sectional view of a conventional head.
FIG. 38 is a cross-sectional view of another conventional head.
FIG. 39 is a schematic diagram for explaining 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 the main part of the mounting structure of the head body and the face member with the side portions bulging outward.
[Explanation of symbols]
  21, 43, 21-1 Head body
  23, 47, 23-1 Face side opening
  27,51 Side part
  29,53 sole part
  33, 59 Face plate
  35, 57, 35-1, 77, 85, 87 heads
  36, 37, 65, 67 Notch
  45 Face part
  61, 63 buttocks
  73 Edge
  75 Reception surface
  79 Nail pieces

Claims (5)

In a hollow metal golf club head in which a face member is welded to a face side opening provided in a head body,
Increase the head volume by enlarging the side part of the head body outward so that it has a head width of 1.15 times or more the face width.
While forming at least the side part located on the toe side of the head body thinner than the face member ,
Fit at least the toe side of the toe and heel side of the face member into the face side opening of the head body, and weld the toe side periphery to the head body .
A golf club head comprising: a face member having a top side and a sole side which are butted against a head body at a peripheral edge of the face side opening, and a top and sole side peripheral edge thereof being welded to the head body.   The golf club head according to claim 1, wherein a flange that protrudes toward the back side of the head body is provided on at least one of the top side and the sole side of the face member. The face part is welded to the face side opening of the head main body, which has a side part greatly bulging outward so as to have a head width of 1.15 times or more the face width, and the head volume is increased . A golf club head manufacturing method for manufacturing a hollow metal golf club head comprising:
While forming at least the toe side of the side part located on the toe side of the head body thinner than the face member,
A plurality of claw pieces projecting forward of the head body are integrally formed on the top side of the face side opening of the head body and the outer peripheral edge of the sole side, and the face member is press-fitted along the inner surface side of each claw piece. As a result, a gap is formed between the head body and the face member so that a step is not formed between the face member and the side portion with a nail piece. A method of manufacturing a golf club head, comprising: positioning and holding, and welding a peripheral portion of a face member to a head body to remove a claw piece. At least one of the top side and the sole side of the face member is formed with a flange that protrudes toward the back side of the head main body, and the face member is press-fitted along the inner surface side of each claw piece so that the head main body and the face member After positioning and holding the face member at a predetermined position with a nail piece so that no step is formed between the face member and the side part, a gap is formed between the face part and a moderate part necessary for welding. 4. The method of manufacturing a golf club head according to claim 3, wherein the tip of the golf club is welded to the head body. The face member is press-fitted along the inner surface side of each claw piece, and an appropriate gap necessary for welding is opened between the head body and the face member, so that no step is generated between the face member and the side portion. The face member is positioned and held at a predetermined position by a claw piece as described above, and then the face member is temporarily fixed by welding the face member to each claw piece. Manufacturing method of golf club head.

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