US20050261081A1 - Golf club head having a brazed striking plate - Google Patents
Golf club head having a brazed striking plate Download PDFInfo
- Publication number
- US20050261081A1 US20050261081A1 US10/849,514 US84951404A US2005261081A1 US 20050261081 A1 US20050261081 A1 US 20050261081A1 US 84951404 A US84951404 A US 84951404A US 2005261081 A1 US2005261081 A1 US 2005261081A1
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- United States
- Prior art keywords
- face
- casing
- club head
- golf club
- brazing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/047—Heads iron-type
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0466—Heads wood-type
Definitions
- This invention relates to a golf club head, more particularly to a golf club head which has a casing and a striking plate brazed to an open end of the casing.
- FIG. 1 shows a golf club head which includes a casing 10 and a striking panel 11 .
- the casing 10 has an opening 12 covered by the striking panel 11 which is slightly greater than the opening.
- a rib 13 projects forwardly from an edge of the casing 10 which confines the opening 12 and extends around the opening 12 to engage a groove 14 which is formed in a rear surface of the striking panel 11 along the periphery of the striking panel 11 .
- a welding layer 15 is provided between the surfaces of the striking panel 11 and the casing 10 .
- the welding layer 15 is formed between the joint surfaces of the casing 10 and the striking panel 11 by melting a brazing material between the joint surfaces.
- the striking panel 11 and the casing 10 are coupled together after the brazing material is cooled.
- the interengagement of the rib 13 and the groove 14 can increase the contact surface areas between the casing 10 and the striking panel 11 , as the brazing material is pre-arranged only at the edge of the opening 12 of the casing 10 , the amount thereof is limited by the length of the edge of the opening 12 . If the amount of the brazing material is insufficient, the bonding effect of the welding layer 15 between the casing 10 and the striking panel 11 will be reduced.
- the brazing material is placed along the edge of the opening 12 of the casing 10 before the striking panel 11 is attached to the casing 10 .
- the brazing material is squeezed between the groove 14 and the rib 13 .
- the brazing material is melted by heat, it oozes outward from the clearance between the groove 14 and the rib 13 and is solidified at the outer surfaces of the striking panel 11 and the casing 10 .
- the striking panel 11 and the casing 10 must be subjected to manual or mechanical surface treating processes, such as grinding and/or polishing. The manufacturing process as such is laborious and time-consuming due to the need for surface treatment.
- FIG. 2 shows another conventional golf club head which includes a metal casing 20 and a striking panel 21 as shown in FIG. 2 .
- the casing 20 is formed with a recess 22 and a shoulder 23 to seat the striking panel 21 thereon, and the striking panel 21 is formed with a groove 24 at an outer edge thereof to engage a rib 25 formed on an inner surface of the casing 20 and extending around the opening thereof.
- the rib 25 is formed by softening and deforming a portion of the casing 20 adjacent the opening of the casing 20 .
- the striking panel 21 is fixed to the casing 20 by brazing. This conventional golf club head also encounters a problem in that the brazing material oozes out and stains the outer surfaces of the casing 20 and the striking panel 21 during manufacture.
- the rib 25 is formed by heating and deforming a portion of the casing 20 proximate to the position of the groove 24 after the striking panel 21 is attached to the casing 20 , once the striking panel 21 is attached, the groove 24 is covered by the casing 20 so that it is difficult to determine the exact position of the groove 24 . Therefore, difficulties are encountered in processing the casing 20 to form the rib 25 at an accurate position relative to the groove 24 . Unless the casing 20 is provided with a mark or measurement to indicate the position where the rib 25 is to be provided, it is impossible to form the rib 25 at an accurate position that permits the rib 25 to mate precisely with the groove 24 .
- a brazing material 34 is put on a shoulder face 33 formed at the recess 32 .
- the striking plate 30 is inserted into the recess 32 so that the brazing material 34 is pressed between the striking plate 30 and the shoulder face 33 .
- the brazing material 34 melts and fills the space between the casing 31 and the striking plate 30 , thereby welding the striking plate 30 to the casing 31 .
- the casing 31 , the striking plate 30 and the brazing material 34 have different melting points, and the brazing material 34 which has the lowest melting point is melted to interconnect the casing 31 and the striking plate 30 .
- the brazing material 34 is in a powder form, when the brazing material 34 melts, the volume thereof contracts so that the brazing material 34 cannot fill the clearance between the joint surfaces of the casing 31 and the striking plate 30 completely. This results in voids between the joint surfaces of the striking plate 30 and the casing 31 , thereby reducing the binding strength therebetween, and adversely affecting the stability of the golf club head.
- An object of the present invention is to provide a golf club head with a construction in which a brazing material can be introduced easily between the surfaces of a striking plate and a casing of the golf club head without staining the outer surfaces of the casing and the striking plate.
- a golf club head comprises: a casing having a front open end defining an opening, the front open end having a frontmost end face and a first outer peripheral face extending rearwardly from the frontmost end face; a striking plate attached to the front open end to cover the opening and including a rear surface confronting the frontmost end face, a front surface opposite to the rear surface, and a second outer peripheral face that extends forwardly from the rear surface to the front surface; and a layer of brazing material bonding the rear surface to the frontmost end face and formed within a clearance between the rear surface and the frontmost end face, one of the striking plate and the front open end having an extension part which projects outward in a direction away from the opening and along a plane of the layer of brazing material, the extension part forming a shoulder with one of the first and second outer peripheral faces, the shoulder being exterior to and immediately adjacent to the clearance, whereby the shoulder is adapted to hold the brazing material during a brazing process.
- FIG. 1 is a sectional view of a conventional golf club head
- FIG. 2 is a sectional view of another conventional golf club head
- FIG. 3 is a sectional view of still another conventional golf club head
- FIG. 4 is a sectional view of a golf club head embodying the present invention.
- FIG. 5 is a front view of the golf club head of FIG. 4 ;
- FIG. 6 is a block diagram illustrating a first preferred embodiment of the method according to the present invention.
- FIG. 7 is a sectional view illustrating how a brazing material is positioned in the first preferred embodiment
- FIG. 8 is a sectional view illustrating how a brazing material is positioned in a second preferred embodiment of the method according to the present invention.
- FIG. 9 is a sectional view of a golf club head produced by the method of the second embodiment.
- FIG. 10 is a front view of the golf club head shown in FIG. 9 ;
- FIG. 11 is a sectional view illustrating how the brazing material is positioned in a third preferred embodiment of the method according to the present invention.
- FIG. 12 is a front view of the golf club head produced by the third embodiment.
- FIG. 13 is a sectional view illustrating how the brazing material is positioned in a fourth preferred embodiment of the method according to the present invention.
- FIG. 14 is a front view of the golf club head produced by the fourth embodiment.
- FIG. 15 is a sectional view of another golf club head produced by the first preferred embodiment
- FIG. 16 is a sectional view of another golf club head produced by the second preferred embodiment.
- FIG. 17 is a sectional view of another golf club head produced by the third preferred embodiment.
- FIG. 18 is a sectional view of another golf club head produced by the fourth preferred embodiment.
- a golf club head embodying the present invention is shown at 4 and includes a metal casing 41 and a striking plate 42 which are brazed to each other.
- a layer of brazing material 43 is formed between the welded surfaces of the casing 41 and the striking plate 42 .
- the casing 41 , the striking plate 42 and the brazing material 43 are made of different metals, and the melting point of the brazing material 43 is lower than those of the casing 41 and the striking plate 42 .
- the casing 41 has a front open end 412 which defines an opening 411 .
- the front open end 412 has a frontmost end face 413 and a first outer peripheral face 414 extending rearwardly from the frontmost end face 413 .
- the striking plate 42 has a front surface 420 , a rear surface 422 , and a second outer peripheral face 423 which extends forwardly from the rear surface 422 to the front surface 420 .
- the striking plate 42 covers the opening 411 of the casing 41 , and the rear surface 422 is placed over the frontmost end face 413 of the casing 41 .
- the rear surface 422 interlocks with the frontmost end face 413 of the casing 41 through interlocking elements provided therebetween.
- the interlocking elements include a projection 415 which projects forwardly from the frontmost end face 413 and a groove 421 formed in the rear surface 422 .
- the layer of brazing material 43 is formed between the rear surface 422 of the striking plate 42 and the frontmost end face 413 of the casing 41 .
- the striking plate 42 further has a plurality of extension parts 40 which project outward in a direction away from the opening 411 and along the plane of the layer of brazing material 43 .
- Each extension part 40 extends beyond the first outer peripheral face 414 of the casing 41 and forms a shoulder 400 with the first outer peripheral face 414 .
- a first preferred embodiment of the method according to the present invention is illustrated as including a preparation step 51 , an assembling step 52 , a brazing material positioning step 53 , and a brazing step 54 .
- the first preferred embodiment is conducted to produce the golf club head 4 .
- the preparation step 51 includes the forming of the casing 41 , the striking plate 42 , and a plurality of pieces of the brazing materials 43 .
- the casing 41 and the striking plate 42 are brought together by contacting the rear surface 422 of the striking plate 42 with the frontmost end face 413 of the casing 41 and by engaging the projection 415 of the frontmost end face 413 with the groove 421 of the striking plate 42 .
- a clearance is formed between the rear surface 422 and the frontmost end face 413 .
- Shoulders 400 are formed around the first outer peripheral face 414 . The shoulders 400 are exterior to and are connected to the clearance between the rear surface 422 and the frontmost end face 413 .
- brazing material positioning step 53 pieces of the brazing material 43 are seated respectively against the shoulders 400 which are parts of the rear surface 422 of the striking plate 42 .
- the brazing material 43 is therefore positioned outwardly of the opening 411 and externally of the clearance between the rear surface 422 and the frontmost end face 413 and is immediately adjacent the clearance.
- the casing 41 and the striking plate 42 which have been brought together are placed in a high temperature environment.
- the high temperature environment may be an oven which is provided with a vacuum pressure or filled with an inert gas. In this embodiment, a vacuumed oven is used. Since the melting point of the brazing material 43 is lower than the melting points of the casing 41 and the striking plate 42 , only the brazing material 43 melts in the oven. The melt of the brazing material 43 flows from the shoulder 400 into the clearance between the rear surface 422 and the frontmost end face 413 through a capillary action. When the brazing material 43 is cooled, it is bonded to the rear surface 422 and the frontmost end face 413 , thereby interconnecting the striking plate 42 and the casing 41 .
- a second preferred embodiment of the method according to the present invention is used to produce a golf club head 4 A.
- This embodiment is generally similar to the first preferred embodiment.
- extension parts 40 A are formed integrally with the casing 41 , unlike the extension part 40 provided in the first embodiment.
- Each extension part 40 A extends outwardly from the front open end 412 of the casing 41 in a direction away from the opening 411 and forms a shoulder 400 A with the second outer peripheral face 423 of the striking plate 42 .
- the shoulder 400 A is a part of the frontmost end face 413 of the casing 41 .
- the brazing material 43 is seated against the shoulder 400 A as shown in FIG. 8 .
- the brazing material is positioned at the outer side of the opening 411 and at the exterior of the clearance between the rear surface 422 and the frontmost end face 413 during the manufacturing process.
- the projection 415 formed on the front open end 412 of the casing 41 is provided with a slanting face 416 and the groove 421 is provided with a slanting face 426 so as to increase the areas of the contact surfaces of the striking plate 41 and the front open end 412 of the casing 41 .
- the brazing material 43 can be positioned easily and accurately on the shoulders 400 , 400 A during the manufacturing of the golf club head 4 , 4 A.
- the brazing material 43 is positioned on the shoulders 400 , 400 A rather than between the striking plate 42 and the front open end 412 of the casing 41 , positional deviation occurring during the manufacturing process can be prevented and the rate of good quality products can be increased.
- the increased contact surface areas of the striking plate 42 and the casing 41 provide more surface area to which the brazing material 43 can be adhered, thereby increasing the bonding surface area between the striking plate 42 and the casing 41 .
- the brazing material 43 is introduced into the clearance between the striking plate 42 and the casing 41 through a capillary action in the present invention and since the clearance permits only a small amount of brazing material 43 to flow thereinto, the brazing material 43 forms only a thin film layer between the striking plate 42 and the casing 41 , thus providing stable and firm bonding between the striking plate 42 and the casing 41 .
- the amount of the brazing material 43 which is suitable for bonding the striking plate 42 and the casing 41 may be predetermined so that the brazing material 43 not only is sufficient to bind the striking plate 42 and the casing 41 but also leaves only a small amount of residue on the shoulder 400 , 400 A. As such, subsequent processing steps, such as grinding and polishing steps, for removal of the residue can be dispensed with.
- the brazing material 43 may be supplemented by placing an additional amount of the brazing material 43 on the shoulders 400 , 400 A followed by heating so that the brazing material 43 flows into the voids. Therefore, the present invention enhances the rate of quality products and is advantageous in solving the problem of poor bonding between the striking plate 42 and the casing 41 due to the insufficient amount of brazing material 43 .
- FIGS. 11 and 12 show a golf club head 4 B to be coupled with a wooden shaft which is made by a third preferred embodiment of the method according to the present invention.
- the golf club head 4 B has extension parts 40 B extending outwardly from the striking plate 42 B in a direction away from the opening 411 B of the casing 411 B.
- the extension parts 40 B form shoulders 400 B with an outer peripheral face 414 B of the casing 411 B.
- the brazing material 43 is seated against the shoulders 400 B.
- FIGS. 13 and 14 show a golf club head 4 C to be coupled with a wooden shaft which is made by a fourth preferred embodiment of the method according to the present invention.
- the golf club head 4 C has extension parts 40 C extending outwardly from the front open end 412 B in a direction away from the opening 411 B of the casing 41 B.
- the extension parts 40 C form shoulders 400 C with the casing 41 B.
- the brazing material 43 is seated against the shoulders 400 C.
- FIG. 15 shows another golf club head 4 D which is made by the first embodiment of the method of the present invention.
- the golf club head 4 D differs from the golf club head 4 shown in FIG. 4 only in that no projection and groove are provided on the rear surface 422 of the striking plate 42 and the frontmost end face 413 of the casing 41 .
- FIG. 16 shows another golf club head 4 E which is made by the method of the second preferred embodiment.
- the golf club head 4 E differs from the golf club head 4 A shown in FIG. 9 only in that no projection and groove are provided on the rear surface 422 of the striking plate 42 and the frontmost end face 413 of the casing 41 .
- FIG. 17 shows another golf club head 4 F which is made by the method of the third preferred embodiment.
- the golf club head 4 F differs from the golf club head 4 B shown in FIG. 11 only in that no projection and groove are provided on the rear surface 422 of the striking plate 42 and the frontmost end face 413 of the casing 41 .
- FIG. 18 shows another golf club head 4 G which is made by the method of the fourth preferred embodiment.
- the golf club head 4 G differs from the golf club head 4 C shown in FIG. 13 only in that no projection and groove are provided on the rear surface 422 of the striking plate 42 and the frontmost end face 413 of the casing 41 .
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- Wood Science & Technology (AREA)
- Golf Clubs (AREA)
Abstract
Description
- 1. Field of the Invention
- This invention relates to a golf club head, more particularly to a golf club head which has a casing and a striking plate brazed to an open end of the casing.
- 2. Description of the Related Art
- As more and more people like playing golf, either for pleasure or for physical exercise, the prior art have suggested various types of golf clubs to meet the increasing demand therefor.
FIG. 1 shows a golf club head which includes acasing 10 and astriking panel 11. Thecasing 10 has an opening 12 covered by thestriking panel 11 which is slightly greater than the opening. Arib 13 projects forwardly from an edge of thecasing 10 which confines the opening 12 and extends around the opening 12 to engage agroove 14 which is formed in a rear surface of thestriking panel 11 along the periphery of thestriking panel 11. Awelding layer 15 is provided between the surfaces of thestriking panel 11 and thecasing 10. Thewelding layer 15 is formed between the joint surfaces of thecasing 10 and thestriking panel 11 by melting a brazing material between the joint surfaces. Thestriking panel 11 and thecasing 10 are coupled together after the brazing material is cooled. - Although the interengagement of the
rib 13 and thegroove 14 can increase the contact surface areas between thecasing 10 and thestriking panel 11, as the brazing material is pre-arranged only at the edge of theopening 12 of thecasing 10, the amount thereof is limited by the length of the edge of the opening 12. If the amount of the brazing material is insufficient, the bonding effect of thewelding layer 15 between thecasing 10 and thestriking panel 11 will be reduced. - During fabrication, the brazing material is placed along the edge of the
opening 12 of thecasing 10 before thestriking panel 11 is attached to thecasing 10. When thestriking panel 11 is attached to thecasing 10 to cause thegroove 14 to engage therib 13, the brazing material is squeezed between thegroove 14 and therib 13. When the brazing material is melted by heat, it oozes outward from the clearance between thegroove 14 and therib 13 and is solidified at the outer surfaces of thestriking panel 11 and thecasing 10. In order to remove the brazing material solidified at the outer surfaces, thestriking panel 11 and thecasing 10 must be subjected to manual or mechanical surface treating processes, such as grinding and/or polishing. The manufacturing process as such is laborious and time-consuming due to the need for surface treatment. -
FIG. 2 shows another conventional golf club head which includes ametal casing 20 and astriking panel 21 as shown inFIG. 2 . Thecasing 20 is formed with arecess 22 and a shoulder 23 to seat thestriking panel 21 thereon, and thestriking panel 21 is formed with agroove 24 at an outer edge thereof to engage arib 25 formed on an inner surface of thecasing 20 and extending around the opening thereof. Therib 25 is formed by softening and deforming a portion of thecasing 20 adjacent the opening of thecasing 20. Thestriking panel 21 is fixed to thecasing 20 by brazing. This conventional golf club head also encounters a problem in that the brazing material oozes out and stains the outer surfaces of thecasing 20 and thestriking panel 21 during manufacture. - On the other hand, while the interlocking of the
rib 25 and thegroove 24 increases the firmness of the joint between thestriking panel 21 and thecasing 20, it is required that therib 25 be formed at an accurate position so as to precisely mate with thegroove 24 of thestriking panel 21. Since therib 25 is formed by heating and deforming a portion of thecasing 20 proximate to the position of thegroove 24 after thestriking panel 21 is attached to thecasing 20, once thestriking panel 21 is attached, thegroove 24 is covered by thecasing 20 so that it is difficult to determine the exact position of thegroove 24. Therefore, difficulties are encountered in processing thecasing 20 to form therib 25 at an accurate position relative to thegroove 24. Unless thecasing 20 is provided with a mark or measurement to indicate the position where therib 25 is to be provided, it is impossible to form therib 25 at an accurate position that permits therib 25 to mate precisely with thegroove 24. - Referring to
FIG. 3 , in a conventional method for coupling a golf club head casing and a striking plate, before thestriking plate 30 is placed in arecess 32 of acasing 31, abrazing material 34 is put on ashoulder face 33 formed at therecess 32. Thereafter, thestriking plate 30 is inserted into therecess 32 so that thebrazing material 34 is pressed between thestriking plate 30 and theshoulder face 33. When thestriking plate 30 and thecasing 31 are heated under vacuum, thebrazing material 34 melts and fills the space between thecasing 31 and thestriking plate 30, thereby welding thestriking plate 30 to thecasing 31. - In the aforesaid method, the
casing 31, thestriking plate 30 and thebrazing material 34 have different melting points, and thebrazing material 34 which has the lowest melting point is melted to interconnect thecasing 31 and thestriking plate 30. However, since thebrazing material 34 is in a powder form, when thebrazing material 34 melts, the volume thereof contracts so that thebrazing material 34 cannot fill the clearance between the joint surfaces of thecasing 31 and thestriking plate 30 completely. This results in voids between the joint surfaces of thestriking plate 30 and thecasing 31, thereby reducing the binding strength therebetween, and adversely affecting the stability of the golf club head. - In order to address the aforesaid problem arising from the contraction of the brazing material, an attempt has been made by increasing the amount of the brazing
material 34. However, when the amount of thebrazing material 34 is increased, the thickness of thebrazing material 34 between the surfaces of thecasing 31 and thestriking plate 30 is increased, thereby enlarging the distance between the joint surfaces of thecasing 31 and thestriking plate 30. Therefore, if the amount of thebrazing material 34 is increased too much, the binding strength can also be reduced. In addition, the brazing material can be wasted. It is a difficult task to balance the amount of the brazing material and the binding strength. - Furthermore, after the
striking plate 30 is placed in therecess 32 and is pressed against thebrazing material 34 which has been placed on theshoulder face 33 within therecess 32, even if voids are formed between theshoulder surface 33 and thestriking plate 30 because of the insufficient amount of thebrazing material 34, it is impossible to add thebrazing material 34 to the voids by removing thestriking plate 30 from thecasing 31. In addition, during the manufacturing process, it is not easy to realize the presence of such voids in the products. Therefore, the aforesaid method cannot be relied upon to produce good quality products. - An object of the present invention is to provide a golf club head with a construction in which a brazing material can be introduced easily between the surfaces of a striking plate and a casing of the golf club head without staining the outer surfaces of the casing and the striking plate.
- According to this invention, a golf club head comprises: a casing having a front open end defining an opening, the front open end having a frontmost end face and a first outer peripheral face extending rearwardly from the frontmost end face; a striking plate attached to the front open end to cover the opening and including a rear surface confronting the frontmost end face, a front surface opposite to the rear surface, and a second outer peripheral face that extends forwardly from the rear surface to the front surface; and a layer of brazing material bonding the rear surface to the frontmost end face and formed within a clearance between the rear surface and the frontmost end face, one of the striking plate and the front open end having an extension part which projects outward in a direction away from the opening and along a plane of the layer of brazing material, the extension part forming a shoulder with one of the first and second outer peripheral faces, the shoulder being exterior to and immediately adjacent to the clearance, whereby the shoulder is adapted to hold the brazing material during a brazing process.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments of the invention, with reference to the accompanying drawings, in which:
-
FIG. 1 is a sectional view of a conventional golf club head; -
FIG. 2 is a sectional view of another conventional golf club head; -
FIG. 3 is a sectional view of still another conventional golf club head; -
FIG. 4 is a sectional view of a golf club head embodying the present invention; -
FIG. 5 is a front view of the golf club head ofFIG. 4 ; -
FIG. 6 is a block diagram illustrating a first preferred embodiment of the method according to the present invention; -
FIG. 7 is a sectional view illustrating how a brazing material is positioned in the first preferred embodiment; -
FIG. 8 is a sectional view illustrating how a brazing material is positioned in a second preferred embodiment of the method according to the present invention; -
FIG. 9 is a sectional view of a golf club head produced by the method of the second embodiment; -
FIG. 10 is a front view of the golf club head shown inFIG. 9 ; -
FIG. 11 is a sectional view illustrating how the brazing material is positioned in a third preferred embodiment of the method according to the present invention; -
FIG. 12 is a front view of the golf club head produced by the third embodiment; -
FIG. 13 is a sectional view illustrating how the brazing material is positioned in a fourth preferred embodiment of the method according to the present invention; -
FIG. 14 is a front view of the golf club head produced by the fourth embodiment; -
FIG. 15 is a sectional view of another golf club head produced by the first preferred embodiment; -
FIG. 16 is a sectional view of another golf club head produced by the second preferred embodiment; -
FIG. 17 is a sectional view of another golf club head produced by the third preferred embodiment; and -
FIG. 18 is a sectional view of another golf club head produced by the fourth preferred embodiment. - Before the present invention is described in greater detail, it should be noted that same reference numerals have been used to denote like elements throughout the specification.
- Referring to
FIGS. 4 and 5 , a golf club head embodying the present invention is shown at 4 and includes ametal casing 41 and astriking plate 42 which are brazed to each other. A layer ofbrazing material 43 is formed between the welded surfaces of thecasing 41 and thestriking plate 42. Thecasing 41, thestriking plate 42 and thebrazing material 43 are made of different metals, and the melting point of thebrazing material 43 is lower than those of thecasing 41 and thestriking plate 42. - The
casing 41 has a frontopen end 412 which defines anopening 411. The frontopen end 412 has afrontmost end face 413 and a first outerperipheral face 414 extending rearwardly from thefrontmost end face 413. - The
striking plate 42 has afront surface 420, arear surface 422, and a second outerperipheral face 423 which extends forwardly from therear surface 422 to thefront surface 420. Thestriking plate 42 covers theopening 411 of thecasing 41, and therear surface 422 is placed over thefrontmost end face 413 of thecasing 41. Therear surface 422 interlocks with thefrontmost end face 413 of thecasing 41 through interlocking elements provided therebetween. In this embodiment, the interlocking elements include aprojection 415 which projects forwardly from thefrontmost end face 413 and agroove 421 formed in therear surface 422. The layer ofbrazing material 43 is formed between therear surface 422 of thestriking plate 42 and thefrontmost end face 413 of thecasing 41. - The
striking plate 42 further has a plurality ofextension parts 40 which project outward in a direction away from theopening 411 and along the plane of the layer ofbrazing material 43. Eachextension part 40 extends beyond the first outerperipheral face 414 of thecasing 41 and forms ashoulder 400 with the first outerperipheral face 414. - Referring to
FIGS. 6 and 7 , a first preferred embodiment of the method according to the present invention is illustrated as including apreparation step 51, an assemblingstep 52, a brazingmaterial positioning step 53, and abrazing step 54. The first preferred embodiment is conducted to produce thegolf club head 4. - The
preparation step 51 includes the forming of thecasing 41, thestriking plate 42, and a plurality of pieces of thebrazing materials 43. - In the assembling
step 52, thecasing 41 and thestriking plate 42 are brought together by contacting therear surface 422 of thestriking plate 42 with thefrontmost end face 413 of thecasing 41 and by engaging theprojection 415 of thefrontmost end face 413 with thegroove 421 of thestriking plate 42. A clearance is formed between therear surface 422 and thefrontmost end face 413.Shoulders 400 are formed around the first outerperipheral face 414. Theshoulders 400 are exterior to and are connected to the clearance between therear surface 422 and thefrontmost end face 413. - In the brazing
material positioning step 53, pieces of thebrazing material 43 are seated respectively against theshoulders 400 which are parts of therear surface 422 of thestriking plate 42. Thebrazing material 43 is therefore positioned outwardly of theopening 411 and externally of the clearance between therear surface 422 and thefrontmost end face 413 and is immediately adjacent the clearance. - In the
brazing process 54, thecasing 41 and thestriking plate 42 which have been brought together are placed in a high temperature environment. The high temperature environment may be an oven which is provided with a vacuum pressure or filled with an inert gas. In this embodiment, a vacuumed oven is used. Since the melting point of thebrazing material 43 is lower than the melting points of thecasing 41 and thestriking plate 42, only thebrazing material 43 melts in the oven. The melt of thebrazing material 43 flows from theshoulder 400 into the clearance between therear surface 422 and thefrontmost end face 413 through a capillary action. When thebrazing material 43 is cooled, it is bonded to therear surface 422 and thefrontmost end face 413, thereby interconnecting thestriking plate 42 and thecasing 41. - Referring to
FIGS. 8, 9 and 10 in combination withFIG. 6 , a second preferred embodiment of the method according to the present invention is used to produce agolf club head 4A. This embodiment is generally similar to the first preferred embodiment. However, in this embodiment,extension parts 40A are formed integrally with thecasing 41, unlike theextension part 40 provided in the first embodiment. Eachextension part 40A extends outwardly from the frontopen end 412 of thecasing 41 in a direction away from theopening 411 and forms ashoulder 400A with the second outerperipheral face 423 of thestriking plate 42. Theshoulder 400A is a part of thefrontmost end face 413 of thecasing 41. During the step of positioning thebrazing material 43, thebrazing material 43 is seated against theshoulder 400A as shown inFIG. 8 . As theshoulder 400A are formed outwardly of theopening 411, the brazing material is positioned at the outer side of theopening 411 and at the exterior of the clearance between therear surface 422 and thefrontmost end face 413 during the manufacturing process. Furthermore, theprojection 415 formed on the frontopen end 412 of thecasing 41 is provided with a slantingface 416 and thegroove 421 is provided with a slantingface 426 so as to increase the areas of the contact surfaces of thestriking plate 41 and the frontopen end 412 of thecasing 41. - Due to the provision of the
shoulders opening 411 of thecasing 41, thebrazing material 43 can be positioned easily and accurately on theshoulders golf club head brazing material 43 is positioned on theshoulders striking plate 42 and the frontopen end 412 of thecasing 41, positional deviation occurring during the manufacturing process can be prevented and the rate of good quality products can be increased. - Besides, the increased contact surface areas of the
striking plate 42 and thecasing 41 provide more surface area to which thebrazing material 43 can be adhered, thereby increasing the bonding surface area between thestriking plate 42 and thecasing 41. - On the other hand, since the
brazing material 43 is introduced into the clearance between thestriking plate 42 and thecasing 41 through a capillary action in the present invention and since the clearance permits only a small amount of brazingmaterial 43 to flow thereinto, thebrazing material 43 forms only a thin film layer between thestriking plate 42 and thecasing 41, thus providing stable and firm bonding between thestriking plate 42 and thecasing 41. - Furthermore, as the brazing material flows into the clearance between the
striking plate 42 and thecasing 41 from the outside of the clearance, the problem associated with the conventional manufacturing method in which the brazing material overflows to the exterior surface of the golf club head can be eliminated. According to the present invention, the amount of thebrazing material 43 which is suitable for bonding thestriking plate 42 and thecasing 41 may be predetermined so that thebrazing material 43 not only is sufficient to bind thestriking plate 42 and thecasing 41 but also leaves only a small amount of residue on theshoulder - Moreover, if there are voids between the contact surfaces of the
casing 41 and thestriking plate 42, thebrazing material 43 may be supplemented by placing an additional amount of thebrazing material 43 on theshoulders brazing material 43 flows into the voids. Therefore, the present invention enhances the rate of quality products and is advantageous in solving the problem of poor bonding between thestriking plate 42 and thecasing 41 due to the insufficient amount of brazingmaterial 43. -
FIGS. 11 and 12 show agolf club head 4B to be coupled with a wooden shaft which is made by a third preferred embodiment of the method according to the present invention. Thegolf club head 4B hasextension parts 40B extending outwardly from thestriking plate 42B in a direction away from theopening 411B of thecasing 411B. Theextension parts 40B form shoulders 400B with an outerperipheral face 414B of thecasing 411B. In this embodiment, thebrazing material 43 is seated against theshoulders 400B. -
FIGS. 13 and 14 show agolf club head 4C to be coupled with a wooden shaft which is made by a fourth preferred embodiment of the method according to the present invention. Thegolf club head 4C hasextension parts 40C extending outwardly from the frontopen end 412B in a direction away from theopening 411B of thecasing 41B. Theextension parts 40C form shoulders 400C with thecasing 41B. In this embodiment, thebrazing material 43 is seated against theshoulders 400C. -
FIG. 15 shows anothergolf club head 4D which is made by the first embodiment of the method of the present invention. Thegolf club head 4D differs from thegolf club head 4 shown inFIG. 4 only in that no projection and groove are provided on therear surface 422 of thestriking plate 42 and thefrontmost end face 413 of thecasing 41. -
FIG. 16 shows anothergolf club head 4E which is made by the method of the second preferred embodiment. Thegolf club head 4E differs from thegolf club head 4A shown inFIG. 9 only in that no projection and groove are provided on therear surface 422 of thestriking plate 42 and thefrontmost end face 413 of thecasing 41. -
FIG. 17 shows anothergolf club head 4F which is made by the method of the third preferred embodiment. Thegolf club head 4F differs from thegolf club head 4B shown inFIG. 11 only in that no projection and groove are provided on therear surface 422 of thestriking plate 42 and thefrontmost end face 413 of thecasing 41. -
FIG. 18 shows anothergolf club head 4G which is made by the method of the fourth preferred embodiment. Thegolf club head 4G differs from thegolf club head 4C shown inFIG. 13 only in that no projection and groove are provided on therear surface 422 of thestriking plate 42 and thefrontmost end face 413 of thecasing 41. - While the present invention has been described in connection with what is considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretations and equivalent arrangements.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/849,514 US20050261081A1 (en) | 2004-05-20 | 2004-05-20 | Golf club head having a brazed striking plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/849,514 US20050261081A1 (en) | 2004-05-20 | 2004-05-20 | Golf club head having a brazed striking plate |
Publications (1)
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US20050261081A1 true US20050261081A1 (en) | 2005-11-24 |
Family
ID=35375881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/849,514 Abandoned US20050261081A1 (en) | 2004-05-20 | 2004-05-20 | Golf club head having a brazed striking plate |
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US (1) | US20050261081A1 (en) |
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US1968092A (en) * | 1931-11-16 | 1934-07-31 | Lconard A Young | Golf club head |
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US6350209B1 (en) * | 2000-01-12 | 2002-02-26 | Archer C. C. Chen | Golf club head formed of a head case and a ball-striking plate doubly fused with the head case |
US6458045B1 (en) * | 2001-02-20 | 2002-10-01 | Archer C. C. Chen | Golf club head |
US6479524B1 (en) * | 1998-12-16 | 2002-11-12 | Boehringer Ingelheim Pharma Kg | Substituted aryl and heteroaryl derivatives, their production and their use as medicines |
US20040147341A1 (en) * | 2003-01-24 | 2004-07-29 | Nelson Precision Casting Co., Ltd. | Golf club head |
US6780124B2 (en) * | 2002-11-15 | 2004-08-24 | Fu Sheng Industrial Co., Ltd. | Golf club head for welding |
US20050049074A1 (en) * | 2003-09-02 | 2005-03-03 | Chan-Tung Chen | Weight member for a golf club head |
US20050064954A1 (en) * | 2003-09-22 | 2005-03-24 | Chan-Tung Chen | Connecting structure for a striking plate of a golf club head |
US20050181890A1 (en) * | 2004-02-12 | 2005-08-18 | Chun-Yung Huang | Connecting structure for a striking plate of a golf club head |
US6971961B2 (en) * | 2003-03-17 | 2005-12-06 | Fu Sheng Industrial Co., Ltd. | Connection structure for a striking plate of a golf club head |
-
2004
- 2004-05-20 US US10/849,514 patent/US20050261081A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1968092A (en) * | 1931-11-16 | 1934-07-31 | Lconard A Young | Golf club head |
US5094383A (en) * | 1989-06-12 | 1992-03-10 | Anderson Donald A | Golf club head and method of forming same |
US5871408A (en) * | 1997-06-23 | 1999-02-16 | Chen; Archer C. C. | Method for fusing a ball-striking plate with a golf club head case |
US6001032A (en) * | 1997-07-24 | 1999-12-14 | Sumitomo Rubber Industries, Ltd. | Golf club head |
US6050904A (en) * | 1998-10-27 | 2000-04-18 | Kuo; Allen H. W. | Golf club head |
US6479524B1 (en) * | 1998-12-16 | 2002-11-12 | Boehringer Ingelheim Pharma Kg | Substituted aryl and heteroaryl derivatives, their production and their use as medicines |
US6183377B1 (en) * | 1999-08-02 | 2001-02-06 | Lung-Cheng Liang | Method for producing a gold club head |
US6299549B1 (en) * | 1999-12-07 | 2001-10-09 | Wuu Horng Industrial Co., Ltd. | Structure of golf club head |
US6350209B1 (en) * | 2000-01-12 | 2002-02-26 | Archer C. C. Chen | Golf club head formed of a head case and a ball-striking plate doubly fused with the head case |
US6458045B1 (en) * | 2001-02-20 | 2002-10-01 | Archer C. C. Chen | Golf club head |
US6780124B2 (en) * | 2002-11-15 | 2004-08-24 | Fu Sheng Industrial Co., Ltd. | Golf club head for welding |
US20040147341A1 (en) * | 2003-01-24 | 2004-07-29 | Nelson Precision Casting Co., Ltd. | Golf club head |
US6971961B2 (en) * | 2003-03-17 | 2005-12-06 | Fu Sheng Industrial Co., Ltd. | Connection structure for a striking plate of a golf club head |
US20050049074A1 (en) * | 2003-09-02 | 2005-03-03 | Chan-Tung Chen | Weight member for a golf club head |
US20050064954A1 (en) * | 2003-09-22 | 2005-03-24 | Chan-Tung Chen | Connecting structure for a striking plate of a golf club head |
US20050181890A1 (en) * | 2004-02-12 | 2005-08-18 | Chun-Yung Huang | Connecting structure for a striking plate of a golf club head |
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Owner name: NELSON PRECISION CASTING CO. LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHENI, CHAN-TUNG;HUANG, CHUN-YUNG;REEL/FRAME:015359/0375 Effective date: 20040507 |
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Owner name: NELSON PRECISION CASTING., LTD., TAIWAN Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE CONVEYING PARTY, PREVIOUSLY RECORDED AT REEL 015359, FRAME 0375;ASSIGNORS:CHEN, CHEN TUNG;HUANG, CHUN-YUNG;REEL/FRAME:017170/0336 Effective date: 20040507 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |