U.S. patent application number 13/215541 was filed with the patent office on 2012-03-01 for golf club head.
This patent application is currently assigned to KOREA NUCLEAR ENGINEERING CO., LTD.. Invention is credited to Se-yup Lee.
Application Number | 20120052979 13/215541 |
Document ID | / |
Family ID | 44050662 |
Filed Date | 2012-03-01 |
United States Patent
Application |
20120052979 |
Kind Code |
A1 |
Lee; Se-yup |
March 1, 2012 |
Golf Club Head
Abstract
Disclosed is a golf club head including a variation part, which
is easily flexible, formed at a striking surface of a head, and
capable of increasing repulsive power caused by an elastic
deformation rate of the striking surface upon striking a ball to
improve a flying distance, and strengthening an elastic recovering
force of corner parts formed by the variation part to further
enhance stability in a ball-flying direction and a ball spin
function.
Inventors: |
Lee; Se-yup; (Seoul,
KR) |
Assignee: |
KOREA NUCLEAR ENGINEERING CO.,
LTD.
Seongnam-si
KR
|
Family ID: |
44050662 |
Appl. No.: |
13/215541 |
Filed: |
August 23, 2011 |
Current U.S.
Class: |
473/331 |
Current CPC
Class: |
A63B 53/047 20130101;
A63B 60/00 20151001; A63B 53/04 20130101; A63B 53/0416 20200801;
A63B 53/042 20200801; A63B 53/0445 20200801 |
Class at
Publication: |
473/331 |
International
Class: |
A63B 53/04 20060101
A63B053/04 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 28, 2010 |
KR |
10-2010-0083734 |
Claims
1. A golf club head provided with a striking plate having a
striking surface configured to contact a ball upon striking the
ball, characterized in that: the striking surface of the striking
plate has a plurality of variation parts formed in a lateral
direction and disposed in a longitudinal direction, wherein each of
the variation parts has a thickness (t2) smaller than a thickness
(t1) of the striking plate, upper and lower sides of the variation
part are continuously formed with the striking plate, and a center
part of the variation part is concavely recessed from the striking
surface to form a groove on the striking surface.
2. The golf club head according to claim 1, wherein the center part
of the variation part is recessed in a V or U shape to form corner
parts at the upper and lower sides of the variation part.
3. The golf club head according to claim 1, wherein the striking
plate disposed between the variation parts has a gravity center
extension projecting rearward therefrom.
4. The golf club head according to claim 1, wherein the variation
part in the longitudinal direction crossing the variation part in
the lateral direction is laterally disposed in plural.
5. The golf club head according to claim 1, wherein the striking
plate is constituted by an inner plate and an outer plate coupled
to a front surface of the inner plate to form the striking surface
and having a thickness smaller than that of the inner plate, the
variation part is formed at the outer plate, and the inner plate
has a through-hole in which the variation part is positioned and
received.
6. The golf club head according to claim 5, wherein the gravity
center extension projects rearward from the inner plate disposed
between the variation parts.
7. The golf club head according to claim 5, wherein mutual contact
parts of the outer plate and the inner plates have an arc-shaped
part and an arc-shaped groove, respectively.
8. The golf club head according to claim 2, wherein the striking
plate disposed between the variation parts has a gravity center
extension projecting rearward therefrom.
9. The golf club head according to claim 2, wherein the variation
part in the longitudinal direction crossing the variation part in
the lateral direction is laterally disposed in plural.
10. The golf club head according to claim 2, wherein the striking
plate is constituted by an inner plate and an outer plate coupled
to a front surface of the inner plate to form the striking surface
and having a thickness smaller than that of the inner plate, the
variation part is formed at the outer plate, and the inner plate
has a through-hole in which the variation part is positioned and
received.
11. The golf club head according to claim 10, wherein the gravity
center extension projects rearward from the inner plate disposed
between the variation parts.
12. The golf club head according to claim 10, wherein mutual
contact parts of the outer plate and the inner plates have an
arc-shaped part and an arc-shaped groove, respectively.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to and the benefit of
Korean Patent Application No. 2010-083734, filed on Aug. 28, 2010,
the disclosure of which is incorporated herein by reference in its
entirety.
BACKGROUND
[0002] 1. Field of the Invention
[0003] The present invention relates to a golf club head, and more
particularly, to a golf club head capable of improving a repulsive
power of a striking surface to increase a driving distance and
further improving stability of a ball-flying direction and a spin
function of a ball using a corner part of a groove formed on the
striking surface.
[0004] 2. Discussion of Related Art
[0005] In general, golf clubs are classified into three kinds,
i.e., drivers for causing golf balls to fly a long distance, irons
for striking balls onto a green of a fair way, and putters for
accurately striking balls on the green to put the balls into holes.
A basic configuration of each golf club includes a head having a
striking surface, a shaft, and a grip.
[0006] FIGS. 1 and 2 illustrate an example of a head of a
conventional golf club. The club head 1 is formed of a high
strength metal material such as titanium, titanium alloy, or the
like, and has a striking surface 2 configured to contact a golf
ball when the club head 1 strikes the golf ball. A plurality of
straight grooves 3 are laterally formed and longitudinally disposed
on the striking surface 2. A plurality of corner parts 3a and 3b
are laterally formed and longitudinally disposed on the striking
surface 2 due to formation of the grooves 3. The corner parts 3a
and 3b prevent slide of the ball upon striking to increase
stability and accuracy of a ball-flying direction, and provide a
spin to the ball, for example, to cause to ball to fly high or to
stop or move an on-green ball backward, without causing the ball to
over run.
[0007] In golf, an ability of adjusting a ball-flying direction, a
flying distance, a ball spin, and so on, is very important, and
such ability is basically constituted by a wing posture, power,
striking technique, and so on. Professional or amateur golfers are
subjected to difficulties due to lack of adjustability related to
the ball-flying direction, flying distance, ball spin, and so on,
caused by differences in individual ability upon striking, and make
steady efforts to improve such ability.
[0008] However, people who play golf for the purpose of interest or
exercise have insufficient ability related to basic swing posture,
power and striking technique, and a lack of effort and time to
improve the ability. For this reason, stability in ball-flying
direction is decreased, a flying distance is insufficient, and
various techniques such as straight driving, back spin, slicing,
and so on, according to a level of ball spin, cannot be easily
used. As a result, due to lack of ability, some people cannot
perform a desired swing to enjoy golf so that they lose interest in
golf and consequently avoid playing golf.
SUMMARY OF THE INVENTION
[0009] In order to solve the above problems, the present invention
is directed to a golf club head including a variation part, which
is easily flexible, formed at a striking surface of a head, and
capable of increasing repulsive power caused by an elastic
deformation rate of the striking surface upon striking a ball to
improve a flying distance, and strengthening an elastic recovering
force of corner parts formed by the variation part to further
enhance stability in a ball-flying direction and a ball spin
function.
[0010] According to an aspect of the present invention, there is
provided a golf club head provided with a striking plate having a
striking surface configured to contact a ball upon striking the
ball, characterized in that the striking surface of the striking
plate has a plurality of variation parts formed in a lateral
direction and disposed in a longitudinal direction, wherein each of
the variation parts has a thickness (t2) smaller than a thickness
(t1) of the striking plate, upper and lower sides of the variation
part are continuously formed with the striking plate, and a center
part of the variation part is concavely recessed from the striking
surface to form a groove on the striking surface.
[0011] Preferably, the center part of the variation part is
recessed in a V or U shape to form corner parts at the upper and
lower sides of the variation part, and the striking plate disposed
between the variation parts has a gravity center extension
projecting rearward therefrom.
[0012] Preferably, the striking plate is constituted by an inner
plate and an outer plate coupled to a front surface of the inner
plate to form the striking surface and having a thickness smaller
than that of the inner plate, the variation part is formed at the
outer plate, and the inner plate has a through-hole in which the
variation part is positioned and received.
[0013] Preferably, mutual contact parts of the outer plate and the
inner plates have an arc-shaped part and an arc-shaped groove,
respectively. Preferably, the variation part in the longitudinal
direction crossing the variation part in the lateral direction is
laterally disposed in plural.
[0014] According to the golf club head of the present invention,
the variation part formed at the striking surface of the striking
plate has a thickness smaller than that of the striking plate,
upper and lower sides of the variation part are continuously formed
with the striking plate, and a center part of the variation part is
recessed from the striking surface to form a groove on the striking
surface. Therefore, the variation part can be easily and
elastically deformed upon striking a golf ball to increase an
elastic deformation rate at which the striking surface of the
striking plate is deformed inward, and thus, an elastic recovery
force of the striking plate itself and an elastic recovery force of
the variation part can also be increased to further improve a
flying distance of the golf ball.
[0015] In addition, since a position of a center of gravity of the
striking plate is far away from the striking surface by a gravity
center extension projecting rearward from the striking plate,
rotation moment of the gravity center extension is increased upon
recovery of the elasticity of the striking surface, and thus, the
increased rotation moment of the gravity center extension is
applied to upper and lower corner parts of the groove, so that
anti-slide of a golf ball, stability of a ball-flying direction and
a spin function of a golf ball can be further improved.
[0016] As described above, the golf club head of the present
invention helps people who enjoy golf for the purpose of interest
or exercise or beginners who have insufficient abilities such as a
basic swing posture, power and swing technique strengthen a
recovering force upon strike so as to improve the flying distance.
In addition, a function of the corner parts formed at the striking
surface can be improved to increase stability of the ball-flying
direction, and various swing techniques can be performed by the
ball spin so that people can be more interested in golf and enjoy
golf.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and other objects, features and advantages of the
present invention will become more apparent to those of ordinary
skill in the art by describing in detail exemplary embodiments
thereof with reference to the accompanying drawings, in which:
[0018] FIG. 1 is a front view showing a conventional golf club
head;
[0019] FIG. 2 is a cross-sectional view of the golf club head shown
in FIG. 1;
[0020] FIG. 3 is a perspective view showing a golf club head in
accordance with a first embodiment of the present invention;
[0021] FIG. 4 is a cross-sectional view of the golf club head shown
in FIG. 3;
[0022] FIG. 5 is a cross-sectional view showing a variation of the
first embodiment of the present invention;
[0023] FIG. 6 is a perspective view of a golf club head in
accordance with a second embodiment of the present invention;
[0024] FIG. 7 is an exploded perspective view of an outer plate of
FIG. 6;
[0025] FIG. 8 is a cross-sectional view of the outer plate shown in
FIG. 6;
[0026] FIGS. 9A and 9B are cross-sectional views of major parts
showing a variation of the second embodiment of the present
invention; and
[0027] FIG. 10 is a perspective view of a golf club head in
accordance with a third embodiment of the present invention.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
[0028] Exemplary embodiments of the present invention will be
described in detail below with reference to the accompanying
drawings. While the present invention is shown and described in
connection with exemplary embodiments thereof, it will be apparent
to those skilled in the art that various modifications can be made
without departing from the spirit and scope of the invention.
[0029] FIGS. 3 and 4 are a perspective view and a cross-sectional
view showing a first embodiment of a golf club head in accordance
with the present invention. As shown in drawings, a head 10
includes a striking plate 20 having a striking surface 21
configured to contact a golf ball upon striking. A variation part
30 is longitudinally formed at the striking surface 21 of the
striking plate 20.
[0030] The variation part 30 is provided in plural at predetermined
intervals in a vertical direction of the striking surface 21, and
thus, the striking surface 21 includes a plurality of divisional
striking surfaces divided by the variation parts 30 in a vertical
direction and longitudinally formed in a lateral direction.
[0031] In addition, the variation part 30 has a thickness t2
smaller than a thickness t1 of the striking plate 20 having the
striking surface 21, upper and lower sides continuously formed with
the striking surface 20, and a center part concavely formed from
the striking surface 21 to form a groove 31 on the striking surface
21. Such a variation part 30 can be easily and elastically deformed
to increase an elastic deformation rate at which the striking
surface 21 of the striking plate 20 is deformed inward upon
striking a golf ball.
[0032] Therefore, when a golf ball is struck, as shown by an
imaginary line in an enlarged portion of FIG. 4, an elastic
deformation rate at which the striking surface 21 is deformed
inward is increased in comparison with the conventional art, and
thus, repulsive power upon striking can be increased to further
improve a flying distance.
[0033] In addition, since increase in an elastic deformation rate
of the striking surface 21 enables absorption of an impact upon
striking, an impact transmitted to hands, which grasp the grip,
through a shaft can be reduced, and a striking sound is lighter to
provide a good feeling.
[0034] Meanwhile, the variation part 30 may be recessed in a
V-shape as shown in drawings, or a U-shape (while not shown), so
that corner parts 32a and 32b are formed at upper and lower sides
of the variation part 30. Since the upper and lower corner parts
32a and 32b, which are formed in a lateral direction of the
striking surface 21, are longitudinally disposed in plural, slide
of the striking surface upon striking a golf ball can be prevented
to promote accuracy of the striking and stability in ball-flying
direction and provide rotation such as a spin, and so on, to the
ball.
[0035] FIG. 5 is a cross-sectional view of major parts showing a
variation of the first embodiment of FIG. 5 having the same
configuration as the first embodiment, except that gravity center
extensions 22 project rearward from the striking plates 20 between
the variation parts 30, respectively.
[0036] According to this configuration, since a position of a
center of gravity of the striking plate 20 is further away from the
striking surface 21, when the striking surface 21 is elastically
deformed and recovered by striking a golf ball as shown by a solid
line and an imaginary line in FIG. 5, a rotational moment of the
gravity center extension 22 is increased. As a result, since the
increased rotation moment of the gravity center extension 22 is
applied to the upper and lower corner parts 32a and 32b of the
groove 31, an anti-slide function of a golf ball, stability of a
ball-flying direction and a spin function of a golf ball can be
further improved.
[0037] FIGS. 6 to 8 are, respectively, a perspective view, an
exploded perspective view and a cross-sectional view of a golf club
head in accordance with a second embodiment of the present
invention. In the configuration of the first embodiment, the
striking surface 20 is constituted by an inner plate 210, and an
outer plate 220 adhered to or press-fitted into a front surface of
the inner plate 210 to form the striking surface 21, the outer
plate 220 has a thickness larger than that of the inner plate 210.
In addition, the variation part 30 of the first embodiment is
formed on the outer plate 220 in the same manner, and a
through-hole 211 in which the variation part 30 is accommodated is
formed in the inner plate 210.
[0038] According to the above configuration, similar to the first
embodiment, an elastic deformation rate that the striking surface
21 is deformed inward by elastic deformation of the variation part
30 upon striking a golf ball is increased in comparison with the
conventional art, a flying distance can be further improved, and
the upper and lower corner parts 32a and 32b of the variation part
30 can perform functions of anti-slide of the golf ball upon
striking, stability of the ball-flying direction, ball spin, and so
on.
[0039] In addition, according to another variation of the second
embodiment of the present invention, as shown in FIG. 9(a), the
gravity center extension 22 projects rearward from the inner plate
210 to increase rotation moment of the gravity center extension 22
so that anti-slide of a golf ball, stability of a ball-flying
direction and a spin function of the golf ball can be further
improved. In still another embodiment, as shown in FIG. 9(b), an
arc-shaped part 210a and an arc-shaped groove 220a are formed at
mutual contact parts of the outer plate 220 and the inner plate
210, respectively, so that slide contact between the inner plate
210 and the outer plate 220 can be smoothly performed when the
striking plate 20 is elastically deformed.
[0040] FIG. 10 is a perspective view of a golf club head in
accordance with a third embodiment of the present invention. In the
configuration of the first embodiment, the variation part 40 in the
longitudinal direction crossing the variation part 30 in the
lateral direction may be laterally disposed in plural to improve
elastic deformation rates of the striking plate 20 in the
longitudinal direction as well as the lateral direction. In
addition, while not shown, in the configuration of the second
embodiment, the variation part 40 in the longitudinal direction
crossing the variation part 30 in the lateral direction formed in
the outer plate 220 may be laterally disposed in plural to improve
elastic deformation rates of the striking plate 20 in the
longitudinal direction as well as the lateral direction.
[0041] It will be apparent to those skilled in the art that various
modifications can be made to the above-described exemplary
embodiments of the present invention without departing from the
spirit or scope of the invention. Thus, it is intended that the
present invention covers all such modifications provided they come
within the scope of the appended claims and their equivalents.
* * * * *