U.S. patent application number 11/016717 was filed with the patent office on 2006-06-22 for connecting structure for striking plate and body of golf club head.
This patent application is currently assigned to NELSON PRECISION CASTING CO., LTD.. Invention is credited to Wen-Ching Hou, Chun-Yung Huang.
Application Number | 20060135285 11/016717 |
Document ID | / |
Family ID | 36596731 |
Filed Date | 2006-06-22 |
United States Patent
Application |
20060135285 |
Kind Code |
A1 |
Hou; Wen-Ching ; et
al. |
June 22, 2006 |
Connecting structure for striking plate and body of golf club
head
Abstract
A connecting structure is provided for a striking plate and a
body of a golf club head. The body includes an opening in a front
side thereof. The opening is delimited by a perimeter end wall, and
a first snapping projection is formed on the perimeter end wall.
The striking plate includes a perimeter wall projecting from a face
thereof. A second snapping projection extends along a distal end of
the perimeter wall of the striking plate. The first snapping
projection and the second snapping projecting engage with each
other for positioning the body and the striking plate.
Inventors: |
Hou; Wen-Ching; (Kaohsiung,
TW) ; Huang; Chun-Yung; (Kaohsiung Hsien,
TW) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Assignee: |
NELSON PRECISION CASTING CO.,
LTD.
|
Family ID: |
36596731 |
Appl. No.: |
11/016717 |
Filed: |
December 21, 2004 |
Current U.S.
Class: |
473/342 ;
473/350 |
Current CPC
Class: |
A63B 53/0416 20200801;
A63B 53/047 20130101; A63B 53/0487 20130101; A63B 53/0466
20130101 |
Class at
Publication: |
473/342 ;
473/350 |
International
Class: |
A63B 53/04 20060101
A63B053/04 |
Claims
1. A connecting structure for a striking plate and a body of a golf
club head, comprising: a body including an opening in a front side
thereof, the opening being delimited by a perimeter end wall, a
first snapping projection being formed on the perimeter end wall;
and a striking plate including a perimeter wall projecting from a
face thereof, a second snapping projection extending along a distal
end of the perimeter wall of the striking plate, the first snapping
projection and the second snapping projecting engaging with each
other for positioning the body and the striking plate.
2. The connecting structure as claimed in claim 1 wherein the
connecting structure further comprises a bonding layer formed
between the first snapping projection of the body and the second
snapping projection of the striking plate.
3. The connecting structure as claimed in claim 1 wherein the
bonding layer is formed by one of brazing and adhesion.
4. The connecting structure as claimed in claim 1 wherein the first
snapping projection of the body comprises a slant perimeter face,
and wherein the second snapping projection of the striking plate
includes a slant perimeter face for engaging with the slant
perimeter face of the first snapping projection.
5. The connecting structure as claimed in claim 1 wherein the first
snapping projection includes a perimeter groove, and wherein the
second snapping projection projects inward from the distal end of
the perimeter wall of the striking plate and is engaged in the
perimeter groove of the first snapping projection.
6. The connecting structure as claimed in claim 1 wherein the first
snapping projection extends along a portion of the perimeter end
wall delimiting the opening of the body on which further defines a
shoulder.
7. The connecting structure as claimed in claim 6 wherein the first
snapping projection extends along an outer portion of the perimeter
end wall delimiting the opening of the body, with the shoulder of
the body located inside the first snapping projection.
8. The connecting structure as claimed in claim 7 wherein the first
snapping projection comprises a slant perimeter face inclining
toward the shoulder.
9. The connecting structure as claimed in claim 6 wherein the first
snapping projection extends along an inner portion of the perimeter
end wall delimiting the opening of the body, with the shoulder of
the body located outside the first snapping projection.
10. The connecting structure as claimed in claim 9 wherein the
first snapping projection comprises a slant perimeter face
inclining toward the shoulder.
11. The connecting structure as claimed in claim 1 wherein the
second snapping projection extends along a portion of an end face
of the perimeter wall of the striking plate, leaving a
shoulder.
12. The connecting structure as claimed in claim 11 wherein the
second snapping projection extends along an outer portion of the
end face of the perimeter wall of the striking plate, with the
shoulder of the striking plate located inside the second snapping
projection.
13. The connecting structure as claimed in claim 9 wherein the
second snapping projection extends along an outer portion of the
end face of the perimeter wall of the striking plate, with the
shoulder of the striking plate located inside the second snapping
projection.
14. The connecting structure as claimed in claim 11 wherein the
second snapping projection extends along an inner portion of the
end face of the perimeter wall of the striking plate, with the
shoulder of the striking plate located outside the second snapping
projection.
15. The connecting structure as claimed in claim 7 wherein the
second snapping projection extends along an inner portion of the
end face of the perimeter wall of the striking plate, with the
shoulder of the striking plate located outside the second snapping
projection.
16. The connecting structure as claimed in claim 12 wherein the
second snapping projection comprises a slant perimeter face
inclining toward the shoulder of the striking plate.
17. The connecting structure as claimed in claim 13 wherein the
second snapping projection comprises a slant perimeter face
inclining toward the shoulder of the striking plate.
18. The connecting structure as claimed in claim 14 wherein the
second snapping projection comprises a slant perimeter face
inclining toward the shoulder of the striking plate.
19. The connecting structure as claimed in claim 15 wherein the
second snapping projection comprises a slant perimeter face
inclining toward the shoulder of the striking plate.
20. The connecting structure as claimed in claim 1 wherein the body
further comprises a hosel mounted to a side of the body and a wall
portion located on the front side of the body and adjacent to the
hosel and the perimeter end wall delimiting the opening, and
wherein the striking plate comprises an opening facing the wall
portion of the body.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a connecting structure for
a golf club head. In particular, the present invention relates to a
connecting structure for a striking plate and a body of a golf club
head.
[0003] 2. Description of Related Art
[0004] Taiwan Patent Publication No. 327606 discloses a method for
bonding a striking plate to a golf club head body. The golf club
head body is made of metal and includes an opening in a face
thereof. The opening includes a shoulder on which a welding
material is placed. The striking plate is inserted into the opening
and presses against a protruded portion of an inner edge of the
shoulder, thereby filling the welding material into the gap between
the striking plate, the shoulder, and the protruded portion. The
welding material is made of metal powder and has a melting point
lower than those of the golf club head body and the striking plate.
The golf club head body/striking plate is placed into a vacuum
furnace or a high-temperature furnace protected by inert gas and
heated to a temperature higher than the melting point of the
welding material. The molten welding material fills the tiny gap
between the striking plate and the golf club head body by capillary
action. After cooling, a reliable golf club head body with firm
bonding and without weld mark is obtained.
[0005] However, the adhesive force provided by the welding material
for bonding the striking plate and the golf club head body is
insufficient to provide secure bonding. The protruded portion of
the golf club head must be riveted to the striking plate to avoid
falling of the striking plate during swing, resulting in additional
procedures and cost. Further, a portion of the welding material in
the gap oozes, forming voids in the gap that should be completely
filled.
[0006] Taiwan Utility Model Publication No. 421057 discloses a
connecting structure for a body and a striking plate of a golf club
head. The body includes an opening in a front side thereof. The
striking plate is similar to the opening in shape yet slightly
greater than the opening in size. The striking plate covers the
opening. An annular protrusion is formed on an outer edge of the
opening of the body, and an annular groove is defined in a
perimeter of a rear side of the striking plate for receiving the
annular protrusion. A brazing layer is formed between the joint
area between the body and the striking plate. The welding layer is
formed as a result of solidification of molten brazing material
after cooling, thereby securely brazing the body and the striking
plate together.
[0007] Taiwan Patent Publication No. 590028 discloses a wooden club
head comprising a body and a striking plate. The striking plate
includes an annular wall projecting from a side thereof, providing
a U-shaped structure in section to improve elastic deformability.
The body includes an annular groove for engaging with an annular
protrusion of the striking plate. The body and the striking plate
are bonded together by brazing.
[0008] In both of Taiwan Utility Model Publication No. 421057 and
Taiwan Patent Publication No. 590028, a larger filling space with a
larger contact area exists between the annular groove and the
annular protrusion, providing a larger bonding area for brazing.
However, the annular protrusion and the annular groove are bonded
with each other by the brazing layer that could not withstand
long-term swing. A cannon test (a golf ball with a standard weight
hit the striking plate of the club head at a velocity of 50 m/sec)
showed that the striking plate disengaged from the body after being
shot 100 times. Improvement in the connecting structure for the
striking plate and the golf club head body is required.
OBJECTS OF THE INVENTION
[0009] An object of the present invention is to provide a
connecting structure for a striking plate and a body of a golf club
head with improved assembly accuracy.
[0010] Another object of the present invention is to provide a
connecting structure for a striking plate and a body of a golf club
head with improved bonding strength.
[0011] A further object of the present invention is to provide a
connecting structure for a striking plate and a body of a golf club
head with improved bonding reliability.
[0012] Still another object of the present invention is to provide
a connecting structure for a striking plate and a body of a golf
club head to prolong the life of the golf club head.
SUMMARY OF THE INVENTION
[0013] In accordance with the present invention, a connecting
structure is provided for a striking plate and a body of a golf
club head. The body includes an opening in a front side thereof.
The opening is delimited by a perimeter end wall, and a first
snapping projection is formed on the perimeter end wall. The
striking plate includes a perimeter wall projecting from a face
thereof. A second snapping projection extends along a distal end of
the perimeter wall of the striking plate. The first snapping
projection and the second snapping projecting engage with each
other for positioning the body and the striking plate.
[0014] Preferably, the connecting structure further comprises a
bonding layer formed between the first snapping projection of the
body and the second snapping projection of the striking plate. The
bonding layer is formed by one of brazing and adhesion.
[0015] Preferably, the first snapping projection of the body
comprises a slant perimeter face, and the second snapping
projection of the striking plate includes a slant perimeter face
for engaging with the slant perimeter face of the first snapping
projection.
[0016] In an embodiment of the invention, the first snapping
projection includes a perimeter groove, and the second snapping
projection projects inward from the distal end of the perimeter
wall of the striking plate and is engaged in the perimeter groove
of the first snapping projection.
[0017] Preferably, the first snapping projection extends along a
portion of the perimeter end wall delimiting the opening of the
body, leaving a shoulder. In an embodiment of the invention, the
first snapping projection extends along an outer portion of the
perimeter end wall delimiting the opening of the body, with the
shoulder of the body located inside the first snapping projection.
In another embodiment of the invention, the first snapping
projection extends along an inner portion of the perimeter end wall
delimiting the opening of the body, with the shoulder of the body
located outside the first snapping projection. Preferably, the
first snapping projection comprises a slant perimeter face
inclining toward the shoulder.
[0018] Preferably, the second snapping projection extends along a
portion of an end face of the perimeter wall of the striking plate,
leaving a shoulder. In an embodiment of the invention, the second
snapping projection extends along an outer portion of the end face
of the perimeter wall of the striking plate, with the shoulder of
the striking plate located inside the second snapping projection.
In another embodiment of the invention, the second snapping
projection extends along an inner portion of the end face of the
perimeter wall of the striking plate, with the shoulder of the
striking plate located outside the second snapping projection.
Preferably, the second snapping projection comprises a slant
perimeter face inclining toward the shoulder of the striking
plate.
[0019] Preferably, the body further comprises a hosel mounted to a
side of the body and a wall portion located on the front side of
the body and adjacent to the hosel and the perimeter end wall
delimiting the opening, and the striking plate comprises an opening
facing the wall portion of the body.
[0020] Other objects, advantages and novel features of this
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is an exploded perspective view of a first embodiment
of a golf club head in accordance with the present invention;
[0022] FIG. 2 is an exploded sectional view of the golf club head
in FIG. 1;
[0023] FIG. 2a is an enlarged view of a circled portion in FIG.
2;
[0024] FIG. 3 is a sectional view of the golf club head in FIG. 2
after assembly;
[0025] FIG. 3a is an enlarged view of a circled portion in FIG.
3;
[0026] FIG. 4 is an exploded perspective view of a second
embodiment of the golf club head in accordance with the present
invention;
[0027] FIG. 5 is an exploded sectional view of the golf club head
in FIG. 4;
[0028] FIG. 5a is an enlarged view of a circled portion in FIG.
5;
[0029] FIG. 6 is a sectional view of the golf club head in FIG. 5
after assembly;
[0030] FIG. 6a is an enlarged view of a circled portion in FIG.
6;
[0031] FIG. 7 is an exploded sectional view of a third embodiment
of the golf club head in accordance with the present invention;
[0032] FIG. 8 is a sectional view of the golf club head in FIG. 7
after assembly;
[0033] FIG. 8a is an enlarged view of a circled portion in FIG.
8.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0034] Referring to FIGS. 1 and 2, a first embodiment of a golf
club head in accordance with the present invention comprises a body
1 and a striking plate 2. The body 1 may be of iron club type,
wooden club type, or putter type. In the illustrated embodiment,
the body 1 is of iron club type, detailed structure of which is not
described to avoid redundancy.
[0035] Still referring to FIGS. 1 and 2, the body 1 comprises a
hosel 11, an opening 12 delimited by a perimeter end wall facing a
front of the body 1, a wall portion 13, and a first snapping
projection 14. The hosel 11 is integrally formed with or welded to
a side of the body 1. The opening 12 is formed in a front side of
the body 1. A space for rearward elastic deformation of the
striking plate 2 is thus provided behind the opening 12. The wall
portion 13 is located on the front side of the body 1 adjacent to
the hosel 12 and the perimeter end wall delimiting the opening
12.
[0036] The first snapping projection 14 extends along the perimeter
end wall of the opening 12, leaving a first shoulder 15. In the
illustrated embodiment, the first snapping projection 14 extends
along an outer portion of the perimeter end wall of the opening 12
and the first shoulder 15 is located inside the first snapping
projection 14, with the first snapping projection 14 including a
slant perimeter face 140 inclining toward the first shoulder 15. A
brazing material or adhesive (not shown) may be applied to the
first snapping projection 14 and the first shoulder 15 according to
the need of the manufacturing process.
[0037] Referring to FIGS. 1, 2, and 2a, in the illustrated
embodiment, the striking plate 2 includes a perimeter wall 21
projecting from a face thereof and extending along a perimeter of
the striking plate 2, leaving an opening 22 (FIG. 1) in a side of
the face of the striking plate 2 and between two distal ends of the
perimeter wall 21. The opening 22 is adjacent to the hosel 11 when
the striking plate 2 is bonded to the body 1. The striking plate 2
is substantially U-shaped or L-shaped in section due to provision
of the perimeter wall 21 and the opening 22, improving the elastic
deformability of the striking plate 2.
[0038] A second snapping projection 23 extends along an end face of
the perimeter wall 21, leaving a second shoulder 24. In the
illustrated embodiment, the second snapping projection 23 extends
along an inner portion of the end face of the perimeter wall 21 and
the second shoulder 24 is located outside the second snapping
projection 23, with the second snapping projection 23 including a
slant perimeter face 230 inclining toward the second shoulder 24. A
brazing material or adhesive (not shown) may be applied to the
second snapping projection 23 and the second shoulder 24 according
to the need of the manufacturing process. Further, as illustrated
in FIG. 2a, the second snapping projection 23 may include a
chamfered face 231 at a distal edge thereof to improve assembling
convenience.
[0039] Referring to FIGS. 3 and 3a, before assembly, a brazing
material (or adhesive) is applied to the first snapping projection
14 and the first shoulder 15 (or the second snapping projection 23
and the second shoulder 24). Further, a brazing material (or
adhesive) is applied to the wall delimiting the opening 22 and the
wall portion 13.
[0040] In assembly, the opening 22, the second snapping projection
23, and the second shoulder 24 of the striking plate 2 are
respectively aligned with the wall portion 13, the first snapping
projection 14 and the first shoulder 15 of the body 1. The
chamfered face 231 allows the second snapping projection 23 of the
striking plate 2 to smoothly slide along into a space defined by
the first snapping projection 14 and the first shoulder 15 such
that the slant perimeter face 140 of the first snapping projection
14 and the slant perimeter face 230 of the second snapping
projection 23 engage with each other. After snapping, the snapping
engagement between the first snapping projection 14 and the second
snapping projection 23 maintain accurate positioning in the
pre-assembling procedure. Next, heating and brazing are carried out
to melt the brazing material that forms a bonding layer 3 after
cooling, thereby bonding the body 1 and the striking plate 2 by
brazing. Alternatively, the bonding layer 3 is formed by adhesive
after solidification. The adhesive may be epoxy, ultraviolet (UV)
light-sensitive adhesive, instant adhesive, or anaerobic
adhesive.
[0041] Other methods using a brazing material can be used. For
example, after mutual snapping between the body 1 and the striking
plate 2, an appropriate amount of a paste-like brazing material can
be applied to the joint surfaces of the body 1 and the striking
plate 2 and then heated. The molten brazing material fills the gap
between the body 1 and the striking plate 2 under the capillary
action. Further, a brazing material carrier structure in the form
of at least one wing (not shown) may be provided on at least one of
the body 1 and the striking plate 2. After mutual snapping between
the body 1 and the striking plate 2, solid brazing material is
placed on the wing and then heated. The molten brazing material
fills the gap between the body 1 and the striking plate 2 under the
capillary action. The wing is then removed by cutting.
[0042] After brazing (or adhering), due to the mutual snapping and
brazing (or adhesion) between the body 1 and the striking plate 2,
the bonding reliability between the body 1 and the striking plate 2
is improved, effectively avoiding cracking in the joint area
therebetween, thereby prolonging the life of the golf club
head.
[0043] FIGS. 4, 5, 5a, 6, and 6a illustrate a second embodiment of
the golf club head modified from the first embodiment. In this
embodiment, the first snapping projection 14 extends along an inner
portion of the perimeter end wall of the opening 12 and the first
shoulder 15 is located outside the first snapping projection 14,
with the first snapping projection 14 including a slant perimeter
face 140 inclining toward the first shoulder 15. Further, the
second snapping projection 23 extends along an outer portion of the
end face of the perimeter wall 21 and the second shoulder 24 is
located inside the second snapping projection 23 with the second
snapping projection 23 including a slant perimeter face 230
inclining toward the second shoulder 24. Further, as illustrated in
FIG. 5a, the first snapping projection 14 includes a chamfered face
141 at a distal edge thereof to improve assembling convenience.
[0044] After assembling and brazing (or adhering), an engaging
layer 3 is formed between the second snapping projection 23, the
second shoulder 24, the first projection 14, and the first shoulder
15. Due to the mutual snapping and brazing (or adhesion) between
the body 1 and the striking plate 2, the bonding strength and
bonding reliability between the body 1 and the striking plate 2 are
improved.
[0045] FIGS. 7, 8, and 8a illustrate a third embodiment of the golf
club head modified from the second embodiment. In this embodiment,
the second shoulder 24 of the striking plate 2 is omitted. Instead,
the perimeter wall 21 of the striking plate 2 includes an annular
projection projecting inward from the distal end of the perimeter
wall 21 to form the second snapping projection 23. Further, the
first snapping projection 14 includes a perimeter groove 142 for
engaging with the second snapping projection 23. The first snapping
projection 14 includes a perimeter face for guiding the second
snapping projection 23 into the perimeter groove 142. After
assembly and brazing (or adhesion), an engaging layer 3 is formed
between the second snapping projection 23, the first snapping
projection 14, and the first shoulder 15. The bonding strength and
bonding reliability between the striking plate 2 and the body 1 are
improved.
[0046] While the principles of this invention have been disclosed
in connection with specific embodiments, it should be understood by
those skilled in the art that these descriptions are not intended
to limit the scope of the invention, and that any modification and
variation without departing the spirit of the invention is intended
to be covered by the scope of this invention defined only by the
appended claims.
* * * * *