Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
1
THE DEVICE FOR RIGHT GRIP OF WRITING TOOhS
Technical Field
The present invention relates to a device for right grip of
a writing tool, and more particularly, to a device for right
grip of a writing tool,. which has an ergonomically curved body,
and seating parts formed on specific parts of the body for
seating a user's thumb, index finger and middle finger in a
preferable posture, thereby naturally correcting a grip posture
at the same time with gripping of the writing tool.
Background Art
The wrong grip of a writing tool makes a user's,
particularly, children's fingers deformed, and strains the
IS user's fingers, wrist, shoulders, and so on.
In more detail, the right and preferable grip posture is
that a predetermined space part is formed between the thumb and
the index finger when the user° thumb and index finger grasp the
writing tool (see FIG. 11).
At this time, as excessive force is applied to meridian
point portions at the tips of the fingers if the user grasps the
writing tool for a long time period, the user' s thumb and index
finger gradually comes in close contact with the writing tool,
and the thumb and the index finger also gradually comes in
contact with each other, and thereby, the volume of the space
part formed between the thumb and the index finger becomes
gradually reduced (see FIG. 12).
Such wrong grip posture is one of main causes of finger
deformity, and there is therefore a need for a writing tool,
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
2
which can provide an effective and natural grip posture capable
of. keeping a right gripping. condition even though the user uses
the writing tool for a long time.
Disclosure of Invention
Accordingly, the present invention has been made in view of
the above problems, and it is an object of the present invention
to provide a device for right grip of a writing tool, which
includes a thumb seating part and an index finger seating part
curved in the same form as a space portion formed between the
thumb and the index finger, and a middle finger seating part
extending to a portion, where the writing tool and the middle
finger come in contact with each other, from the front and lower
portion of the thumb and index finger seating parts so as to
support a portion of the middle finger, thereby preventing a
close contact between the thumb and the index finger by forcedly
separating the thumb and the index finger.
Another object of the present invention to provide a device
for right grip of a writing tool, which further includes a thumb
support part formed on the lower portion of the thumb seating
part for supporting the thumb, through holes formed in the thumb
and index finger seating parts, the middle finger seating part
and the thumb support part for absorbing sweat, and embossed
portions for finger pressing and slip prevention, thereby
allowing a user to use it more safely and agreeably.
To achieve the above objects, the present invention
provides a device for right grip of a writing tool including: a
body having a curved surfaces a thumb contact preventing part
and an index finger contact preventing part curved on the upper
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
3
surface of the body in the same form as a space formed between a
user' thumb and index finger in a state where the user grasps
the writing tool with the thumb and the index finger so as to
prevent a close contact of the thumb and the index finger with
the writing tool, the thumb contact preventing part and the
index finger contact preventing part being in contact with the
upper surface of the body; a thumb seating part formed on the
side wall surface of the lower portion of the thumb contact
preventing part for seating the thumb thereon; an~index finger
seating part formed on the side wall surface of the lower
portion of the index finger contact preventing part for seating
the index finger thereon: a middle finger seating part
downwardly extending from the front and lower portion of the
body to a portion, where the writing tool and the user' s middle
finger are in contact with each other, for supporting a part of
the middle finger; and a coupling part for fixing the writing
tool to the body at a predetermined angle.
It is preferable that the device for right grip of a
writing tool further includes a thumb support part laterally
extending from the middle finger seating part for supporting the
thumb.
The coupling part may be an insertion hole perforating the
body at a predetermined gradient for inserting and fixing the
writing tool thereto.
The coupling part may be a groove cut on a side section of
the body at a predetermined angle for forcedly fitting the
writing tool into a side surface of the body.
The groove may be formed on a side portion of the thumb and
index finger seating parts, which contacts the index finger, or
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
4
on the lower end surface of the body.
Furthermore, it is preferable that the coupling part has a
slip prevention part formed on a portion which contacts the
outer circumferential surface of the writing tool.
The slip prevention part is a frictional protrusion formed
on the inner circumferential surface of the insertion hole or
the inner surface of the groove.
It is preferable that a number of friction protrusions are
in the form of a screw thread, a circle, or a semicircle.
Meanwhile, it is preferable that the body includes: a first
body which is in contact with the thumb at the outer surface
thereof and a second body which is in contact with the index
finger at the outer surface thereof, wherein the first body has
a plurality bf first projections formed on the inner surface
thereof, each of the plurality of first projections having a
through-hole formed therein, and the second body has a plurality
of second projections formed on the inner~surface thereof to
correspond to the plurality of first projections, such that each
of the plurality of second projections is forcedly fitted into
the corresponding through-hole of the plurality of first
projections.
It is preferable that the body further includes a third
body formed on the upper portions of the first and second bodies
for covering the coupling part and the slip prevention part
formed inside the body. ,
The slip prevention part may be an elastic member formed on
one side or both sides of the inner surfaces of the first and
second bodies for applying an elastic force to the outer
circumferential surface of the writing tool.
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
It is preferable that the elastic member is an arc-shaped
plate type spring fragment having a predetermined curvature
radius, and both ends of the spring fragment are locked and
supported by a support portion formed on the inner surface of
5 the first body or the second body.
It is preferable that the first body or the second body has
a slip prevention layer laminated on the outer surface. thereof,
the slip prevention layer being made of rubber material or
elastic resin material having a predetermined friction force.
It is preferable that at least one of the thumb seating
part, the index finger seating part, the middle finger seating
part and the thumb support part further has a number of through
holes and/or embossed portions formed on the outer surface
thereof which is in close contact with the thumb and the index
finger for absorbing and evaporating sweat to thereby keep a
user's agreeable contact feeling.;
In the present invention, the body has the same conception .
as the writing tools of the first to fourth embodiments, which
will be described later, and a body, which will be described in
the fifth embodiment later, is what an elastic fragment, which
will be described later, is excluded.
Furthermore, the thumb and index finger seating parts are
specific parts on which a user's thumb and index finger are
seated on the body.
Brief Description of Dratnrings
Further objects and advantages of the invention can be more
fully understood from the following detailed description taken
in conjunction with the accompanying drawings in which:
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
6
FIG. 1 is a perspective view of a device for right grip of
a writing tool according to a first preferred embodiment of the
present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a sectional view taken along the line of A-A' of
FIG. 2;
FIG. 4 s an exemplary view showing a used state of the
device for right grip of the writing tool shown in FIGS. 1 to 3;
FIG. 5 is a perspective view of a .device for right grip of
a writing tool according to a second preferred embodiment of the
present invention;
FIG. 5a is a perspective view of a side of FIG. 5;
FIG. 5b is a perspective view of the other side of FIG. 5;
FIG. 6 is a perspective view _of a device_ for right_wgri,p .~f
a writing tool according to a third preferred embodiment of the
present invention;
FIG. 7 is a perspective view of a side of FIG. 6;
FIG. 8 is a perspective view of a device for right grip of
a writing tool according to a fourth preferred embodiment of the
present invention;
FIG. 9 is a bottom view of FIG. 8;
FIG. 10 is an exploded perspective view of a device for
right grip of a writing tool according to a fifth preferred
embodiment of the present invention;
FIG. 11 is a view showing a right grip posture; and
FIG. 12 is a view showing a wrong grip posture requiring
the right grip posture.
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
7
Best Mode for Carrying Out the Invention
Hereinafter, the present invention will now be described in
detail in connection with preferred embodiments with reference
to the accompanying drawings. The present invention is described
with reference to the particular illustrative embodiments, but
it is not to be restricted by the embodiments.
[Embodiments ]
[First Embodiment]
FIG. 1 is a perspective view of the device 10 for right
grip of~ the writing tool according to a first preferred
embodiment of the present invention, FIG. 2 is a rear view of
FIG. 1, FIG. 3 is. a sectional view taken along the line of A-A'
of FIG. 2, and FIG. 4 is an exemplary view showing a used state
of the device 10 for right grip of the writing tool shown in FIG.
3.
Referring to FIGS . 1 to 4, the device 10 for right grip of
the writing tool has an ergonomically curved surface, so that a
user can naturally grasp exact grip parts grasped by the user' s
thumb (t), index finger (f) and middle finger (m), i.e., a thumb
seating part 11, an index finger seating part 12 and a middle
finger seating part 14.
In more detail, the device 10 for right grip of the writing
tool has a thumb contact preventing part 17 and an index finger
contact preventing part 18 angled or curved on the upper surface
thereof (the surface formed at the upper portion in FIG. 1) for
preventing a close contact of the thumb (t) and the index
finger(m) to a writing tool(p).
A portion of the middle finger seating part 14 connected
with the thumb seating part 11 extends horizontally, and thereby,
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
8
a thumb support part 13 for supporting the thumb.(t) projects to
the surface of the thumb seating part 11.
Moreover, the thumb seating part 11, the index finger
support part 13 and the middle finger seating part 14
respectively have a number of through holes 15 formed on their
surfaces, and the through holes l5 serve to absorb sweat
generated when the user uses the writing tool (P) for a long
time or in hot whether such as summer.
At this time, the device 10 for right grip of the writing
tool further includes an insertion hole (H) extending diagonally
from the upper portion to the lower portion thereof at a
predetermined angle, and a friction protrusion 16 spirally
formed on the inner surface of the insertion hole (H) and
advancing from the upper portion to the lower portion of the
device 10 (see FIG. 3)~.
The friction protrusion 16 provides friction force to the
writing tool (P) for preventing movement of the writing tool (P)
so that the writing tool (P) is easily inserted into the
insertion hole(H) and is not moved upwardly.
Furthermore, the friction protrusion 16 is not restricted
to the above form, and may have various forms. That is, the
friction protrusion 16 may be in the form of a semicircle, a
circle, a bar or a net. IIt is preferable that the form of the
friction protrusion 16 is made in consideration of easy
insertion of the writing tool (p) into the insertion hole(H) and
prevention of movement of the writing too(P) during writing.
[Second Embodiment]
FIGS. 5, 5a and 5b are perspective view of a device 20 for
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
9
right grip of the writing tool according to a second preferred
embodiment of the present invention. In FIGS. 5, 5a and 5b, the
thumb support part 13 described in the first embodiment is
omitted.
In more detail, as the thumb support part 13 may provide
adults having big hands with inconvenience and omission of the
thumb support part 13 allows economy of materials, the second
embodiment of the present invention can provide the user with
low-priced writing tool by reducing manufacturing costs.
In addition; the second embodiment of the present invention
has a number of embossed portions 25 formed on the surfaces of a
thumb seating part 21 and an index finger seating part 22 so as
to prevent slip of the writing tool (P) and provide a finger
pressing effect.
The embossed portions 25 can have various forms. For
example, to maximize a slip prevention function, it is
preferable that the embossed portions 25 are in the form of a
fingerprint formed on human's fingers. Alternatively, to
maximize a finger pressing efficiency, it is preferable tat the
embossed portions 25 are in the form of a cone or a hemisphere.
Furthermore, the through holes 15 described in the first
embodiment may be formed between the embossed portions 25.
[Third Embodiment]
FIG. 6 is a perspective view of a device 30 for right, grip
of the writing tool according to a third embodiment of the
present invention, and FIG. 7 is a perspective view showing a
side of FIG. 6. FIGS. 6 and 7 show a different structure for
coupling the writing tool (P) to the device 30 for right grip of
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
the writing tool.
FIGS . 6 and 7 show an improved structure of the devices 10
and 20 described in the first and second embodiments. In a side
surface of the body of the device 30 for right grip of the
5 writing tool, namely, between a thumb seating part 32 and a
middle finger seating part 34, the insertion hole described in
the first and second embodiments is cut, and so, has a U-shaped
groove 36 having the same diameter as the writing tool(P) is
formed,. so that the writing tool (~P) can be easily inserted into
10 the device 30 laterally.
In more detail, the device 30 according to the third
embodiment includes a guide portion 35 formed by the U-shaped
groove 36, and a locking jaw 37 formed on the guide portion 35
for preventing a lateral sepafation of the writing tool (P)
after the writing tool (P) is inserted into the groove 36.
It is preferable that the friction protrusion 16 described
in the first embodiment is formed on the inner surface of the
groove 36 for preventing movement of the writing tool (P).
In addition, the through holes 15 described in the first
embodiment and the embossed portions 25 described in the second
embodiment may be selectively formed on the surfaces of a thumb
seating part 31 and the index finger seating part 32.
[Fourth Embodiment]
FIG. 8 is a perspective view of a device 40 for right grip
of the writing tool according to a fourth preferred embodiment
of the present invention, and FIG. 9 is a bottom view of FIG. 8.
In the fourth embodiment, the middle finger seating part 34
described in the third embodiment is omitted, and a U-shaped
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
11
groove 46 is formed in place of the insertion hole (H) by
cutting the entire bottom end portion of the writing tool 40.
The fourth embodiment minimizes the manufacturing costs, and can
be mainly used by adults rather than children.
As in the third embodiment, the device 40 has the friction
protrusion 16, which is described in the first embodiment,
formed on the inner surface of the groove 46 for preventing
movement of the writing tool (p). The through holes 15 described
in the first embodiment and the embossed portions 25 described
in the second embodiment may be selectively formed on the
surfaces of a thumb seating part 41 and an index finger seating
part 42.
The devices described in the first to fourth embodiments
are single composite products, but not injection-molded products,
and are made of one of rubber material, natural rubber material,
elastic resin material, synthetic resin material, and so on. It
is preferable that the material of the devices is selected in
consideration of elastically restoring force.
[Fifth Embodimeat~
FIG. 10 is an explodedperspective view of a device 50 for
right grip of the writing tool according to a fifth preferred
embodiment of the present invention. The device 50 is an
assembly of injection-molded products made of synthetic resin.
The device 50 according to the fifth embodiment can reduce a
strain modulus due to frequent attachment and detachment of the
writing tool (P), and allow the user to use writing tools (P) of
various thicknesses.
In more detail, the device 50 according to the fifth
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
12
embodiment includes a first body 50a for holding the index
finger (f) on the outer surface thereof, a second body 50b for
holding the thumb(t) on the outer surface thereof, and a third
body 50c for finishing and coupling the upper portions of the
first and second bodies 50a and 50b.
The third body 50 can be formed on the first and second
bodies 50a and 50b or by coupling of the first and second bodies
50a and 50b as it may be formed by coupling the first and second
bodies.
At this~time, the first body 50a has first projections 51
formed on the inner surface thereof, each' of which has a
through-hole formed therein, and the second body 50b has second
projections 52 formed on the inner surface thereof to correspond
to the first proj ections 51, such that each of the plurality of
second projections 51 can be forcedly fitted into the
corresponding through-hole of the first projections 52.
Furthermore, the first body 50a has a support portion 56
formed~on the inner surface thereof, and locking fragments 57 of
a predetermined length formed at both ends of the support
portion 56 in a horizontal direction. At this time, an elastic
member is inserted into the support portion 56. The elastic
member is an arc-shaped plate type spring fragment 55 having a
predetermined curvature radius. After the spring fragment 55 is
inserted into the support portion 56, both ends of the spring
fragment 55 are locked and supported by the locking fragments 57.
The spring fragment 55 mounted on the support portion 56
has a plate type support fragment 58 having a predetermined
surface .
Moreover, the second body 50b has an asymmetric guide wing
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
13
54 laterally protruding from a portion of the inner surface
thereof to correspond to an area between the spring fragment 55
and the support fragment 58 of the first body 50a. In addition,
the second body 50b has an insertion hole (H) formed in the
front end thereof, and the first body 50a has an insertion hole
(H) formed in the rear end thereof. So, the writing tool (P) can
be inserted into the insertion hole (H) of the first body 50a
and drawn out from the insertion hole (H) of the second body
50bformed by coupling the first and second bodies 50a and 50b,
and thereby the writing tool (P) is fixed to the device 50.
A method for coupling the writing tool (P) to the device 50
will be described as follows. When the writing tool (P) is
inserted through the insertion hole (H) formed at the rear end
of the first body 50a, the writing tool (P) is guided between
the spring fragment 55 and the support fragment 58 by the guide
wing 54, and supported on the support fragment 58 in a state
where a predetermined compression force is applied onto the
outer circumferential surface of the writing tool (P) by the
spring fragment 55, and thereby, the writing tool (P) is drawn
out to the insertion hole(H) of the second body 50b.
It is preferable that a slip prevention layer (not shown in
the drawing) made by a double injection molding of rubber
material or elastic resin material, which has a predetermined
friction force, is located on the surfaces of the first, second
and third bodies 50a, 50b and 50c so as provide a soft touch
to
feeling and increase friction force.
Industrial Applicability
As described above, the device for right grip of the
CA 02512533 2005-07-04
WO 2004/076201 PCT/KR2004/000387
14
writing tool according to the present invention can naturally
correct the user's wrong grip posture, and prevent loss of
concentration power and deformity of fingers by reducing the
user's fatigue generated during writing.
While the' present invention has been described with
reference to the particular illustrative embodiments, it is not
to be restricted by the embodiments but only by the appended
claims. It is to be appreciated that those skilled in the art
can change or modify the embodiments without departing from the
scope and spirit of the present invention.
