Note: Descriptions are shown in the official language in which they were submitted.
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[DESCRIPTION]
[Invention Title]
SHAKEHAND TYPE PINGPONG RACKET WITH SUPPORTING
PROJECTION PART
[Technical Field]
The present invention relates to a table tennis racket
for shakehand grip style, in which a player having an index
finger in contact with a backhand side of a racket body while
grasping a handgrip of the racket with a thumb and middle, ring,
and little fingers. More particularly, the present invention
relates to a table tennis racket for shakehand grip style,
which have projections on a handgrip to enhance powerful
offensive strokes, wherein a player does not immoderately move
his or her wrist when flipping the batting side to use both
sides of the racket during a game and a beginner can easily
enjoy playing table tennis using both sides of the racket with
little slide and shake.
Generally, the table tennis racket for shakehand grip
style, as illustrated in FIG. la, includes both hitting
surfaces (of a blade) each of which covered with a rubber sheet
1 and a handgrip 2 with which a player can grip the racket.
The player enjoys playing table tennis by returning a table
tennis ball to an opponent's side before it bounces on his or
her side of the table a second time selectively using one of
both hitting surfaces each of which is covered with the rubber
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sheet 1 while supporting the backhand side, as illustrated in
FIG. lb, with the index finger as well as grasping the handgrip
2 with the thumb and the middle, ring and little fingers.
Because there are two hitting surfaces for hitting the ball, a
drive stroke can be easily executed, not to mention a backhand
stroke, a forehand stroke, and a drop shot stroke.
However, with the conventional racket for shakehand grip
style formed with the aforementioned figures, a center point
"c" of the hitting surface located on a geometrical center line
NN a" of the racket is positioned above the centrifugal force
axis "b" moving back and forth on a wrist axis when the player
grips the racket with the hand. Since the center point "c" of
the hitting surface as a batting point is located above or
under the centrifugal force axis "b", there are many
difficulties of consistently matching a batting point with the
center of the rubber sheet 1 by moving a wrist and an arm while
hitting the ball in various angles.
Accordingly, an accurate stroke can be produced only
when the player matches the center point of the rubber sheet
with the ball by changing the heights of the wrist or the arm
when striking the ball and it can be accomplished after the
considerable training procedures. There are many difficulties
for the beginners to acquire this kind of technique.
In the conventional table tennis racket for shakehand
grip style, the handgrip of the racket is simply formed as a
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perpendicular shape along the center of the hitting surface.
The player sometimes drops the racket due to the slipping of
the wet hand with sweat from the handgrip in a game.
This slipping of the hand from the handgrip causes the
shaking of the hitting surface, thereby preventing a correct
smashing stroke when the player tries to strongly smash the
ball.
Further, the conventional racket for shakehand grip
style provides a simple holding function by coupling a bar-
shaped handgrip on the backhand side of the hitting surface.
Since the center of gravity of the racket is positioned at the
hitting surface because of this simple bar-shaped handgrip, an
unskilled player hits the ball with too much force on the wrist
or the fingertips, thereby often creating improper strokes and
dropping the racket due to the centrifugal force while striking
the ball.
Even though the conventional racket for shakehand grip
style is structured to use both hitting surfaces according to
the direction of the approaching ball in case of smashing or
backhand smashing, the player can imrnoderately move his or her
wrist when switching from forehand motion to backhand motion or
vise versa since the player needs to select an accurate angle
of the other hitting surface of the racket in the forehand-
backhand switching.
Moreover, there is no vacant space around the contacting
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point with the fingers or the palm of the hand in the
conventional racket for shakehand grip style and the whole
surfaces of the fingers or the palm of the hand are touching
with the handgrip. Because of this, the sweat on the hand
cannot be vaporized in the air and the slip phenomenon happens
to cause many offensive and defensive failures together with
the improper strokes.
[Background Art]
For reference, Korean Registered Utility Model No. 20-
0428238, filed on Sept. 29, 2006 discloses a table tennis
racket described in detail below. In this disclosure, a
handgrip of the table tennis racket is a slantingly extending
shape from one side edge of the racket body in the opposite
diagonal direction of the other side edge and formed like a gun
grip designed to be gripped exactly like the gun grip. Both
sides of the hitting surfaces can be freely used such like
hitting the ball with the palm or the back of the hand without
bending the wrist while gripping the table tennis racket.
With the aforementioned table tennis racket, Korean
Registered Utility Model No. 20-0428238, the player can use
both sides of the hitting surfaces like the conventional racket
for shakehand grip style since both sides of the hitting
surfaces each of which is covered with a rubber sheet. The
beginners can easily enjoy playing table tennis using both
sides of the hitting surfaces by forming the handgrip curved
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down like the gun grip and designed to be easily grasped.
However, the table tennis racket, Korean Registered
Utility Model No. 20-0428238, cannot resolve the aforementioned
problems of the conventional racket for shakehand grip style.
There still exist the problems such as the slip phenomenon of
the hand from the handgrip, the immoderate moving of the wrist
when changing the grip from forehand motion to backhand motion,
and the problems caused from the mismatched batting point with
the center point of the rubber surface.
[Disclosure]
[Technical Problem]
The present invention has been proposed to solve the
aforementioned problems with the conventional table tennis
racket for shakehand grip style. Exemplary embodiment(s) of
the present invention provide table tennis rackets for
shakehand grip style having projections on the exterior
circumference of a handgrip, thereby enhancing powerful
offensive strokes. A slip phenomenon is prevented from
occurring by averting the touch of the whole surfaces of the
fingers or the palm of the hand and by making the sweat on the
hand easily evaporate in the air, and the wrist cannot be
immoderately moved by switching the hitting surfaces with the
frictional resistance from the projections of the handgrip when
using both sides of the hitting surfaces. The player can
control the palm from slipping out of the handgrip and the
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shakes by gripping the projections with at least one of the
thumb, middle, ring, or little finger; and the beginners can
easily enjoy playing table tennis using both sides of the
hitting surfaces of the racket for shakehand grip style.
[Technical Solution]
In an exemplary embodiment of the present invention, the
table tennis racket for shakehand grip style may include a
racket body; two hitting surfaces formed on both sides of the
body, each of the hitting surfaces covered with a rubber sheet;
a handgrip extending downwards from the racket body; and
projections extending outwards from an outer surface of the
handgrip and supported by player's fingers when a player grips
the handgrip.
The projections can be formed to support at least one
selected from the group consisting of a thumb and middle, ring
and little fingers.
The projections, protrusively formed on the exterior
circumference of the handgrip, can be at least one of the
projection, which is formed on the exterior surface of the
handgrip.
The projections can be formed with at least one
projection on at least one portion selected from the group
consisting of forehand, backhand, left-hand and right-hand
sides of the handgrip.
The table tennis racket for shakehand grip style may
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further include a shake-preventing portion formed on the bottom
coupling area of the hitting surface by tightly touching the
bottom area of the hitting surface with the grip muscle area
between the thumb and the index finger, so as to prevent the
racket from shaking.
[Advantageous Effects]
The table tennis racket for shakehand grip style having
projections on a handgrip according to the present invention
prevents a wrist from being immoderately moved by smoothly
switching the hitting surfaces between forehand and backhand
with frictional resistance from the projections of the
handgrip when using both sides of the hitting surfaces by
additionally forming the projections supported by the fingers
gripping the racket body on the outer surface of a handgrip; a
slip phenomenon is prevented from occurring by easily gripping
the outer surface of the projections of the handgrip with the
thumb and the middle, ring and little fingers; the beginners
can easily enjoy playing table tennis using both sides of the
hitting surfaces of the racket for shakehand grip style by
preventing the slip phenomenon; and in addition, powerful
offensive strokes are improved with little shakes.
By preventing the slip phenomenon, the player can easily
aware of the racket's angle without actually seeing the hand
gripping the racket and fast response to the offensive strokes
is possible.
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Since the projections provide the effect of firmly
gripping the handgrip with little force because of the
frictional resistance by supporting at least one selected from
the group consisting of the thumb and the middle, ring and
little fingers, the player can accurately use the racket,
thereby producing more strong and fast strokes.
Further, the projections also play a role of strong
hooks catching at least one of the thumb and the fingers and
prevent the racket from slipping out, thereby making strong
stokes.
The projections are protrusively formed on the exterior
circumference of the handgrip, structured with at least one
projection, and the slip cannot easily occur at any areas of
the handgrip because of the projections.
Moreover, since the projections are built with at least
one projection on at least one selected from the group
consisting of the forehand, backhand, left-hand, or right-hand
surface of the handgrip and the slip phenomenon can be
remarkably reduced wherever the player grasps the handgrip with
minimum force rather than strong force, the player can strongly
strike the ball with a fast snap.
Since the shake-preventing portion is formed at the
bottom coupling area of the backhand side of the hitting
surface so as to prevent the shaking of the racket by tightly
touching the bottom backhand area with the grip muscle area
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between the thumb and the index finger, maintaining a stable
angle of the racket is easy without the slip phenomenon anymore.
Consequently, a skilled player as well as the beginner can
easily perform the forehand-backhand switching and produce more
stronger and balanced strokes.
Because of the projections being sensed by the hand
holding the handgrip, the player can sensibly and accurately
aware of the racket's angle with the reduction of the slip and
the shakes. Therefore, the player can easily maintain an
accurate angle even when a sudden forehand-backhand switching
is needed and easily strike the returning ball by hitting the
ball on the hitting surface.
Due to the projections, the player can return more fast
strokes to the opponent's half by producing strong strokes on
the backhand side as well as the forehand side and can get
higher points by overwhelming the opponent's returning action.
In addition, owing to the projections, the player can
create returning strokes with more spin for the opponent when
cutting the ball and can earn higher points by making the
opponent not easily receive the strokes.
Since the player's fingers are hooked with the
projections when grasping the handgrip for forehand and
backhand strokes, the player can easily grip the hitting
surface with a twisted angle, a middle position between the
front and the side, by twisting the fingers a little. And the
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player can smoothly strike the return strokes without any
shakes into his or her intended directions.
Thanks to the projections on the outer circumference of
the handgrip, fast and prompt changes of the hitting surfaces
are possible. Since the changes of the hitting surfaces are
performed by the motion using the frictional resistance of the
projections as well as the player's snap motion, the player can
comfortably strike the ball without any force.
With the projections formed on the outer circumference
of the handgrip, the player can strike the ball by using the
frictional resistance of the projections without any force
while softly holding the handgrip. This will prevent the
problems occurring with the player's arm and wrist such as
muscular fatigue and muscle stiffness when striking the ball
with strongly grasping the handgrip.
The corners and edges of the projections make it
possible for the player firmly grip the handgrip without any
shakes as well as providing the finger pressure effect and
enhanced biological activity to the player by acting as
pressure points to stimulate the fingers or the palm of the
hand.
Furthermore, the projections formed on the outer
circumference of the handgrip provide vacant spaces around the
contacting points with the fingers or the palm of the hand and
air can flow through among the spaces. The sweat on the hand
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can be easily evaporated in the air, thereby preventing the
slip phenomenon due to the sweat. The whole surfaces of the
fingers and the palm are not tightly contacting with the
handgrip, thereby rarely occurring the slip phenomenon.
[Description of Drawings]
FIG. la is a perspective view illustrating a
conventional racket for shakehand grip style.
FIG. lb is a conceptual view illustrating the gripping
status of the handgrip of the conventional racket for shakehand
grip style;
FIG. 2 is a perspective view illustrating an embodiment
of a table tennis racket for shakehand grip style having
projections in accordance with the present invention;
FIGS. 3a and 3b are conceptual views illustrating
exemplary structures of the handgrip of the table tennis racket
for shakehand grip style having projections in accordance with
the present invention;
FIG. 4 is a schematic structural view illustrating the
gripping status of the table tennis racket for shakehand grip
style having projections in accordance with the present
invention; and
FIGS. 5 to 19 are reference views illustrating other
embodiments of the table tennis racket for shakehand grip style
having projections in accordance with the present invention.
<Major Reference Numbers of the Drawings>
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10: racket body 11, 12: hitting surface
13: handgrip 20: projection
21: projection
22: comb tooth-shaped projection
70: shake-preventing portion
[Mode for Invention]
The features and other advantages of the present
invention will be more clearly understood from the following
detailed description taken in conjunction with the
accompanying drawing. The terminologies or words used in the
description and the claims of the present invention should not
be interpreted as being limited merely to common and
dictionary meanings. On the contrary, they should be
interpreted based on the meanings and concepts of the
invention in compliance with the scope of the invention on the
basis of the principle that the inventor(s) can appropriately
define the terms in order to describe the invention in the
best way.
FIG. 2 is a perspective view illustrating an embodiment
of a table tennis racket for shakehand grip style having
projections in accordance with the present invention, FIGS. 3a
and 3b are conceptual views illustrating exemplary structures
of the handgrip of the table tennis racket for shakehand grip
style having projections in accordance with the present
invention, FIG. 4 is a schematic structural view illustrating
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the gripping status of the table tennis racket for shakehand
grip style having projections in accordance with the present
invention, and FIGS. 5 to 19 are reference views illustrating
other embodiments of the table tennis racket for shakehand grip
style having projections in accordance with the present
invention.
As illustrated in the drawings, the table tennis racket
having projections for shakehand grip style in accordance with
the present invention includes a racket body 10, two hitting
surfaces 11 and 12 formed on both sides of the racket body 10
and covered with rubber sheets, respectively, a handgrip 13
extending through the backhand side of the racket body 10, and
projections 20 elongated from the outer surface of the
handgrip 13 and supported by the player's thumb h1 leaning on
the side when a player grips the handgrip 13.
The projections 20 are formed to protrude outwards on
the exterior surface of the handgrip 13.
The projections 20 are embossed on predetermined
portions of the exterior circumference of the handgrip 13, and
the remaining portions of the exterior circumference of the
handgrip 13 except the projections 20 are naturally engraved
inwards.
Owing to an embossed part of the projections 20 and an
engraved part of the handgrip 13, the player's palm is in tight
contact with the embossed part of the projections 20 and the
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engraved part of the handgrip 13 so that the player can feel a
grasping force of the hand while gripping the handgrip 13.
Consequently, the player can enhance the offensive power of the
strokes by strengthening the repulsive power of the approaching
ball when striking the ball.
Besides, since the player's fingers are supported and
leaned by the embossed part of the projections 20 and the
engraved part of the handgrip 13 and the grasp of the fingers
is firmly performed, accurate strokes are produced by
preventing the slip phenomenon and the shaking of the handgrip
when striking the ball.
Since the projections 20 are additionally formed on the
outer surface of the handgrip 13, fast and prompt changes of
the hitting surfaces can be accomplished. Since the changes of
the hitting surfaces are performed by the motion using
frictional resistance of the projections 20 as well as the
player's snap motion, the player can comfortably strike the
ball without any force.
With the projections 20 formed on the outer
circumference of the handgrip 13, the player can swing by using
the frictional resistance of the projections 20 without any
strong force while softly holding the handgrip 13. This will
prevent the problems occurring with the player's arm and wrist
such as muscular fatigue and muscle stiffness when swinging his
or her arm with strongly grasping the handgrip 13.
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When the player pushes the side of the projections 20
with the thumb hl after tightly contacting the thumb hl with
the projections 20 formed on the outer surface of the handgrip
13, the handgrip 13 can smoothly rotate and the hitting
surfaces can be switched while the racket body 10 is turning,
consequently, the changes of the hitting surfaces can be
accomplished fast and promptly.
Since the beginner also can make offensive strokes by
easily changing the hitting surfaces when making the switching
from backhand to forehand, the beginner can be interested in
playing a table tennis game using the racket for shakehand grip
style.
Moreover, the projections 20 are elongated in the
longitudinal direction of the handgrip 13 and can be formed
with at least one projection protruding from the outer surface
of the handgrip 13. Since at least one of the projections 20
are protrusively formed, the grasping power of the handgrip can
be improved and the switching motion of the hitting surfaces
can be performed fast and promptly.
Although the projections 20 are formed on the outer
surfaces of the handgrip 13, the projections 20 are composed of
at least one projection 21 formed on the outer surfaces of the
handgrip 13. Even if the projections 20 are formed on the
outer surfaces of the handgrip 13, the projections 20 are
composed of at least one screw-shape projection 21 formed on
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the outer surfaces of the handgrip 13.
And the projections 20 can be formed with at least one
projection on at least one of the forehand, backhand, left-hand,
or right-hand side of the handgrip 13.
The projections 20 prevent the slip phenomenon and the
shakes from the handgrip 13 and the palm of the hand by
performing a role of supporting at least one of the thumb and
the middle, ring and little finger, a role of producing the
frictional resistance, or a role of a hook catching at least
one of the thumb and the fingers.
In another embodiment of the present invention, the
projections 20 prevent the slip phenomenon and the shakes from
the handgrip 13 and the palm of the hand by performing a role
of supporting at least one of the thumb and the index, middle,
ring and little fingers, a role of producing the frictional
resistance, or a role of a hook catching at least one of the
fingers.
Further, with the table tennis racket having projections
for shakehand grip style in accordance with the present
invention, the player can produce strong strokes without any
shakes by using at least one projection 21 protrusively
elongated on the outer surfaces of the handgrip 13, and the
player can control the racket when switching forehand and
backhand stroke, thereby producing accurate strokes thanks to
the projection 21.
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The handgrip 13 is formed to have a quadrilateral-
symmetry shape, and thus both right-handed and left-handed
players can use the handgrip 13 by turning back and forth.
By additionally forming shake-preventing portions on the
bottom coupling area of the hitting surface 11 and 12 so as to
tightly touch the bottom area of the hitting surface 11 and 12
with a grip muscle area between the thumb and the index finger,
it can surely prevent the shaking of the racket and provides
comfortable sense of unity between the racket and the hand.
The player's fingers are hooked with the projection 21
because of the projection 21 of the projections 20. The player
can easily grip the hitting surface 11 and 12 with a twisted
angle, a middle position between the front and the side, by
twisting the fingers a little when grasping the handgrip 13 for
forehand and backhand strokes. And the player can smoothly
strike the return strokes without any shakes in his or her
intended directions.
The corners and edges of the projections 20 make it
possible for the player maintain the firm grip status without
shakes as well as providing the finger pressure effect by
acting as pressure points to stimulate the fingers or the palm
of the hand and to enhance biological activity to the player.
Furthermore, the corners and edges of the projections 20
formed on the outer circumference of the handgrip 13 provide
vacant spaces around the contacting points with the fingers or
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the palm of the hand. The air can flow through among the
spaces and the sweat on the hand can be easily evaporated in
the air, thereby preventing the slip phenomenon due to the
sweat. The whole surfaces of the fingers and the palm are not
in tight contact with the handgrip 13, thereby perfectly or
substantially preventing the slip phenomenon.
The shape of the projections 20 formed on the outer
circumference of the handgrip 13 can be made with various
shapes. Even though they are not illustrated in the drawings,
one of twelve horary signs can be used, for example, to
symbolize the player's year of birth. When the animal shape is
used, embossed carving and depressed engraving on the animal
shape will play a role of the projections 20.
As the table tennis racket having the projections for
shakehand grip style in accordance with the present invention
can be modified in various shapes, it being understood that
various changes may be made in the function and arrangement of
elements without departing from the spirit and scope of the
invention, as set forth in the appended claims.
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