U.S. patent application number 12/198596 was filed with the patent office on 2010-03-04 for interdental brush.
Invention is credited to Hyae Gyung Kim.
Application Number | 20100050358 12/198596 |
Document ID | / |
Family ID | 41723179 |
Filed Date | 2010-03-04 |
United States Patent
Application |
20100050358 |
Kind Code |
A1 |
Kim; Hyae Gyung |
March 4, 2010 |
INTERDENTAL BRUSH
Abstract
The present invention discloses an interdental brush, the
interdental brush of the present invention comprises a handle
including a gripping portion, a brush coupling portion provided at
a front end of the gripping portion and a bending portion provided
on the gripping portion for allowing the brush coupling portion to
be bent with respect to the gripping portion in the first direction
and for restraining a bending of the brush coupling portion in the
second direction which is opposite to the first direction; and a
brush portion coupled to the brush coupling portion of the handle.
Due to the above structure, the interdental brush of the present
invention can clean conveniently and easily an interdental space
between molar teeth as well as an interdental space between front
teeth. In particular, the brush portion of the interdental brush
can be inserted simply and accurately into an interdental space
between molar teeth placed in a narrow space.
Inventors: |
Kim; Hyae Gyung; (Seoul,
KR) |
Correspondence
Address: |
SHERIDAN ROSS PC
1560 BROADWAY, SUITE 1200
DENVER
CO
80202
US
|
Family ID: |
41723179 |
Appl. No.: |
12/198596 |
Filed: |
August 26, 2008 |
Current U.S.
Class: |
15/167.2 |
Current CPC
Class: |
A46B 5/0079 20130101;
A46B 5/0095 20130101; A46B 5/0062 20130101; A46B 2200/108 20130101;
A46B 5/0075 20130101; A46B 17/04 20130101 |
Class at
Publication: |
15/167.2 |
International
Class: |
A46B 9/04 20060101
A46B009/04 |
Claims
1. An interdental brush, comprising; a handle including a gripping
portion, a brush coupling portion provided at a front end of the
gripping portion and a bending portion provided on the gripping
portion for allowing the brush coupling portion to be bent with
respect to the gripping portion in the first direction and for
restraining a bending of the brush coupling portion in the second
direction which is opposite to the first direction; and a brush
portion coupled to the brush coupling portion of the handle.
2. The interdental brush according to claim 1, wherein the bending
portion consists of a bending groove and a bending-restraining
groove formed on both surfaces of a front end portion of the
gripping portion, the bending groove and the bending-restraining
groove are formed in the direction which is perpendicular to the
longitudinal direction of the gripping portion, and both inner
surfaces of the bending groove make a certain angle with each other
and both inner surfaces of the bending-restraining groove are
narrowly spaced from each other.
3. The interdental brush according to claim 1, wherein the both
inner surfaces of the bending groove make an acute angel with each
other and both side surfaces of the bending-restraining groove are
disposed parallel to each other.
4. The interdental brush according to claim 1, wherein the gripping
portion has a curved shape, the bending portion is formed on a
first curved surface of the gripping portion to be corresponded to
an interdental space of the user, and the bending-restraining
groove is formed on a second curved surface being opposite to the
first surface.
5. The interdental brush according to claim 1, wherein the gripping
portion has friction surfaces formed on both sides thereof.
6. The interdental brush according to claim 1, wherein the brush
portion has a core wire which is insert-injected into the brush
coupling portion
7. The interdental brush according to claim 1, wherein the brush
portion is coupled detachably to the brush coupling portion.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of Invention
[0002] The present invention relates to an interdental brush.
[0003] 2. Description of the Related Art
[0004] An interdental brush is used in dentistry and at home to
clean in a space between adjacent teeth (hereinafter, referred to
as "interdental space), this interdental brush is an available
device for removing effectively alien substance, plaque and the
like placed in the interdental space.
[0005] Such interdental brush is classified into the I-type
interdental brush 101 in which a handle 110 and a brush portion 120
are disposed on a straight line as shown in FIG. 1 and the L-type
interdental brush 201 in which a front end portion 211 of a handle
210 is substantially perpendicular to a brush portion 220 as shown
in FIG. 2.
[0006] In general, in the I-type interdental brush, since the
handle and the brush portion are disposed on a straight line, it is
very difficult to insert the brush portion into an interdental
space between the molar teeth. Due to the above difficulty, the
I-type interdental brush has been mainly utilized for cleaning the
interdental space between front teeth.
[0007] And, since the L-type interdental brush has a structure in
which the brush is bent perpendicularly with respect to a front end
portion of the handle, as compared with the I-type interdental
brush, it is more easy to insert the brush portion into an
interdental space between the molar teeth. On the grounds of the
above structure, the L-type interdental brush has been mainly
utilized for cleaning the interdental space between the molar
teeth.
[0008] In addition, since the L-type interdental brush can also
clean the interdental space between the front teeth, the L-type
interdental brush has been more widely utilized than the I-type
interdental brush and various kinds of L-type interdental brushes
have been sold in the market.
[0009] As the typical examples of the L-type interdental brush,
there are a L-type interdental brush, as shown in FIG. 2, in which
a brush portion is insert-coupled integrally with a front end
portion of a handle bent perpendicularly and a L-type interdental
brush, disclosed in Korean Utility Model Publication No.
20-0225939, in which a brush portion is coupled detachably and
perpendicularly to a front end portion of a handle.
[0010] In the meantime, as another type interdental brush, as
disclosed in Korean Utility Model Publication No. 20-0225939, a
brush-rotating type interdental brush in which a brush portion is
coupled rotatably to a front end portion of a handle has been
developed.
[0011] In the above brush-rotating type interdental brush, the
brush portion can be rotated about a hinge. The user can rotate the
brush portion to dispose the brush portion and the handle on the
straight line or to dispose the brush portion perpendicular to the
handle. In order to clean the interdental space between the front
teeth and the interdental space between the molar teeth, as a
result, the use can utilize the interdental brush in which the
brush portion and the handle are disposed on the straight line or
the brush portion is perpendicular to the handle.
[0012] In the meantime, as another example of interdental brush, as
disclosed in Japanese Unexamined Utility Model Publication No.
4-62130, a brush-free-bending type interdental brush in which a
brush wire is freely bent or a neck portion which can be bent
freely is formed on a front end portion of a handle in a brush wire
is inserted has been developed.
[0013] In the above brush-free-bending type interdental brush, the
user can convert a shape of the brush portion into a desired shape
by bending the brush portion, and so the brush portion can be bent
appropriately and then utilized at the time of cleaning the
interdental space between the front teeth and the interdental space
between the molar teeth.
[0014] However, the conventional interdental brushes as described
above have the following drawbacks.
[0015] Since the L-type interdental brush has a structure in which
the brush portion is bent into a "L" shape with respect to the
handle, a space between a molar tooth and a cheek is narrow.
Accordingly, when the brush portion is inserted into the
interdental space between molar teeth, the user feels an
inconvenience.
[0016] In addition, since a space between a molar tooth and a cheek
is narrow, the brush portion is not inserted into the interdental
space while the brush portion is in contact with a molar, and so
the brush portion is frequently bent at an outside of the
interdental space.
[0017] In the brush-rotating type interdental brush, the user
should rotate the brush portion every time, and so it is very
inconvenient to utilize the interdental brush.
[0018] Also, in the brush-free-bending type interdental brush, the
user should bend the brush portion every time, and so it is very
inconvenient to utilize the interdental brush. In addition, since
the brush portion is bent in the arbitrary direction by an external
force, the brush portion is caught on an entrance of the
interdental space in the molar teeth range, and so the brush
portion is not inserted in the interdental space and is frequently
bent to an outside of the interdental space.
SUMMARY OF THE INVENTION
[0019] Accordingly, the present invention is conceived to solve the
aforementioned problems, an object of the present invention is to
provide an interdental brush which can clean conveniently an
interdental space between front teeth as well as an interdental
space between molar teeth and can insert accurately and simply a
brush portion into an interdental space in a molar tooth region
having a narrow space.
[0020] In order to achieve the above object, an interdental brush
according to the present invention comprises a handle including a
gripping portion, a brush coupling portion provided at a front end
of the gripping portion and a bending portion provided on the
gripping portion for allowing the brush coupling portion to be bent
with respect to the gripping portion in the first direction and for
restraining a bending of the brush coupling portion in the second
direction which is opposite to the first direction; and a brush
portion coupled to the brush coupling portion of the handle.
[0021] Here, the bending portion consists of a bending groove and a
bending-restraining groove formed on both surfaces of a front end
portion of the gripping portion, the bending groove and the
bending-restraining groove are formed in the direction which is
perpendicular to the longitudinal direction of the gripping
portion, and it is preferable that both inner surfaces of the
bending groove make a certain angle with each other and both inner
surfaces of the bending-restraining groove are narrowly spaced from
each other.
[0022] In addition, it is preferable that the both inner surfaces
of the bending groove make an acute angel with each other and both
side surfaces of the bending-restraining groove are disposed
parallel to each other.
[0023] Also, it is preferable that the gripping portion has a
curved shape, the bending portion is formed on a first curved
surface of the gripping portion to be corresponded to an
interdental space of the user, and the bending-restraining groove
is formed on a second curved surface being opposite to the first
surface.
[0024] At this time, it is desirable that the gripping portion has
friction surfaces formed on both sides thereof.
[0025] In addition, it is preferable that the brush portion has a
core wire which is insert-injected into the brush coupling portion
or the brush portion is coupled detachably to the brush coupling
portion.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The above and other objects, features and advantages of the
present invention will become apparent from the following
description of preferred embodiments given in conjunction with the
accompanying drawings, in which:
[0027] FIG. 1 is a perspective view of a conventional interdental
brush;
[0028] FIG. 2 is a perspective view of another shaped conventional
interdental brush;
[0029] FIG. 3 is a perspective view of an interdental brush
according to the preferred embodiment of the present invention;
[0030] FIG. 4 to FIG. 6 are side views illustrating a bending
function of a front portion of the interdental brush shown in FIG.
3;
[0031] FIG. 7 to FIG. 9 are views showing a state that the
interdental brush according to the preferred embodiment of the
present invention is in use;
[0032] FIG. 10 is a side view of an interdental brush according to
another embodiment of the present invention which is in use;
and
[0033] FIG. 11 and FIG. 12 are partial perspective views showing
various coupling structures of the interdental brush according to
the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0034] Hereinafter, the preferred embodiment of the present
invention will be described in more detail with reference to the
accompanying drawings.
[0035] FIG. 3 is a perspective view of an interdental brush
according to the preferred embodiment of the present invention and
FIG. 4 to FIG. 6 are side views illustrating a bending function of
a front portion of the interdental brush shown in FIG. 3.
[0036] As shown in the drawings, an interdental brush 1 according
to the present invention comprises a handle 3, a brush portion 5
coupled with a front end of the handle 3 to clean a space between
adjacent teeth (hereinafter, referred to as "interdental space")
and a brush cap 7 protecting the brush portion 5.
[0037] The handle 3 comprises a gripping portion 10 that allows a
user to grip the handle securely, a brush coupling portion 20 and a
bending portion 30 provided at a front end of the gripping portion
10 for connecting the gripping portion 10 and the brush coupling
portion 20. Here, the brushing coupling portion 20 can be bent
toward the user's tooth by the bending portion 30. It is preferable
that the handle 3 is formed of soft synthetic resin material and
the gripping portion 10, the brush coupling portion 20 and the
bending portion 30 are formed integrally with each other through an
injection molding process.
[0038] It is preferable that the gripping portion 10 of the handle
3 has a curved shaped. The shape of the handle 3 corresponds to a
curved range from a molar tooth to a front tooth in a planar curved
structure of the row of teeth of the user. Due to the structure of
the gripping portion 10 of the handle 3, the gripping portion 10
occupying almost all the handle 3 can be closed approached closely
to the row of teeth of the user. It will be apparent that, in the
handle, the grasping portion 10 which can be elastically
transformed has various shapes including a line shape
[0039] In addition, it is preferable that the gripping portion 10
of the handle 3 has the strength to allow a force to be transmitted
to the brush portion 5 when the user moves the handle 3 as well as
the flexibility by which the gripping portion can be corresponded
to a curved structure of the row of teeth of the user. Due to the
above property of the gripping portion of the handle, when the
interdental brush washes an interdental space, an appropriate force
is transmitted to the brush portion 5 and the user feels less a
feeling of alien substance in an oral cavity.
[0040] Friction surfaces 15 are formed on both side surfaces of a
longitudinal mid area of the gripping portion 10 to enable the user
to grip stably the gripping portion. The friction surfaces 15 are
formed as flat faces to enable the user to grip easily the gripping
portion through her/his a thumb finger and index finger and it is
preferable to form micro protrusions on the friction faces for
preventing the user's fingers from being slid.
[0041] In the meantime, as described above, the brush portion 5 is
coupled to the brush coupling portion 20 of the handle 3. It is
preferably that, as shown in FIG. 3 to FIG. 6, a rear end portion
of a core wire 5a of the brush portion 5 is insert-injected into
the brush coupling portion 20.
[0042] Here, as shown in FIG. 11 and FIG, 12, as the coupling
structure of the brush portion 5, a shape fitting structure 21 or a
screw-coupling structure 23 formed at a rear end of the brush
portion 5 and the brush coupling portion 20 of the handle 3 may be
employed, and so the brush portion 5 and the brush coupling portion
20 of the handle 3 can be coupled detachably to each other. Due to
the above coupling structure, the brush portion 5 which is worn
away or transformed can be replaced with new one while the handle 3
is continuously utilized so that it is possible to prevent an
extravagance of the resource and to utilize sanitarily the brush
portion 5 always.
[0043] On the other hand, the bending portion 30 of the handle 3
consists of a bending groove 31 for allowing the brush coupling
portion 20 to be bent in the first direction with respect to the
gripping portion 10, a bending-restraining groove 33 for
restraining a bending of the brush coupling portion 20 in the
second direction which is opposite to the first direction, and a
connecting piece 35 disposed between the bending groove 31 and the
bending-restraining groove 33.
[0044] The bending groove 31 and the bending-restraining groove 33
are formed in the direction which is perpendicular to the
longitudinal direction of the gripping portion 10. In addition, the
connecting piece 35 has a structure by which the gripping portion
10 and the brush coupling portion 20 are connected to each other
and is automatically formed when the bending groove 31 and the
bending-restraining groove 33 are formed through an injection mold
process.
[0045] In both grooves, the bending groove 31 is formed such that
both inner surfaces constituting the bending groove 31 are met at a
certain angle. In particular, it is preferable that both inner
surfaces constituting the bending groove 31 are met at an obtuse
angle when the brush portion 5 and a front portion of the gripping
portion 10 are arranged on a substantial straight line. Due to the
configuration of the bending groove 31, when both inner surfaces of
the bending groove 31 are in contact with each other, the brush
coupling portion 20 can be bent at nearly right angle with respect
to the front portion of the gripping portion 10 as shown in FIG.
5.
[0046] The above bending groove 31 is formed on a first face 11 of
the both curved faces of the gripping portion 10, the first face 11
being corresponded to the interdental space of the user. Due to the
above bending groove 31, the brush portion 5 is directed to the
interdental space of the user when the brush coupling portion 20 is
bent.
[0047] Here, as long as the brush coupling portion 20 can be bent
at right angle with respect to the front portion of the gripping
portion 10, it will be apparent that the bending groove 31 can be
formed with various shapes such as a circular arc shaped
groove.
[0048] And, the bending-restraining groove 33 is formed on a second
curved face 13 of the gripping portion 10, the second face 13 being
opposite to the first face 11 corresponding to the interdental
space. Both inner surfaces of the bending-restraining groove 33 are
adjacently spaced from each other at a narrow gap. It is preferable
that the both inner surfaces constituting the bending-restraining
groove 33 are disposed parallel to each other and a gap between
both inner surfaces becomes minimized.
[0049] The above configuration of the bending-restraining groove 33
is provided to allow both inner surfaces of the bending-restraining
groove 33 to be in contact with each other and to restrain the
brush coupling portion 20 from being bent toward the second face 13
of the gripping portion 10 when a force is exerted to the brush
coupling portion 20 and the brush coupling portion is bent to the
first surface 11 by the above force. Due to the above
bending-restraining groove 33, the brush portion 5 is not bent
arbitrarily toward a cheek within the molar teeth range in the
mouth.
[0050] Here, the bending-restraining groove 33 can be formed such
that both inner surfaces of the bending-restraining groove 33 make
the minimum angle with each angle so as to restrain the brush
coupling portion 20 from being bent toward the second surface 13
which is opposite to the first face 11 corresponding to the
interdental space.
[0051] Like an interdental brush 1' shown in FIG. 10, the bending
portion 30 can consist of only the bending portion 31 formed on one
side face of the gripping portion 10 and the connecting piece 35
connecting the brush coupling portion 20 and the gripping portion
15.
[0052] In the meantime, it is preferable that the brush cap 7 has
the hollow tube shape having opened front and rear ends for
allowing the brush cap to surround the brush portion 5 and to be
press-fitted to a front end portion of the gripping portion 10. The
brush cap 7 having the above shape prevents the brush portion 5
from being contaminated when the interdental brush 1 is not
utilized. In addition, the structure of the brush cap 7 having
opened front and rear ends promotes a drying of the brush portion
5. It will be apparent that the brush cap 7 can have the tube shape
in which only the front end is closed.
[0053] Below, a process for cleaning an interdental space in the
molar teeth area using the interdental brush 1 according to the
present invention having the above structure is illustrated with
reference to FIG. 7 to FIG. 9.
[0054] Firstly, as shown in FIG. 7, the brush portion 5 of the
interdental brush 1 is entered between a cheek and a molar tooth in
an oral cavity and a front end portion of the brush portion 5 is
moved to the interdental space to be cleansed. Then, a front end
portion of the brush portion 5 becomes in contact with a tooth
adjacent to an entrance of the interdental space to be cleaned.
[0055] In addition, as shown in FIG. 8, the bending portion 30
(that is, the connecting piece 35) is bent by the bending groove 31
and the user's force transmitted from the gripping portion 10 so
that the brush coupling portion 20 and the brush portion 5 are
moved toward the interdental space.
[0056] At this time, the bending portion 30 is not bent toward the
cheek in the user's oral cavity by the bending-restraining groove
33. In other words, two inner surfaces constituting the
bending-restraining groove 33 become in contact with each other,
and so the bending portion 30 is not bent toward the cheek. As a
result, the brush coupling portion 20 and the brush portion 5 can
be moved toward only the interdental space.
[0057] Then, the user pushes continuously the gripping portion 10
in the arrow direction in FIG. 9, the brush portion 5 directed to
the interdental space is easily entered into the corresponding to
the interdental space (see FIG. 9).
[0058] In the above state, if the user pushes and pulls repeatedly
the gripping portion 10, the brush portion 5 is reciprocated
smoothly in the interdental space to clean the interdental
space.
[0059] By means of the interdental brush performing the above
function, an interdental space between the molar teeth placed at a
deep inside the oral cavity can be easily cleansed.
[0060] In the interdental brush according to the present invention
as described above, a bending of the brush coupling portion in the
one direction is allowed, but a bending of the brush coupling in
the opposite direction is restrained by the bending portion formed
at a front end portion of the gripping portion so that the brush
portion is not directed outward and can be easily entered into the
interdental space in the narrow space between the molar tooth and
the cheek.
[0061] And, in the oral cavity, the moment that the brush portion
becomes in contact with an entrance of the interdental space, the
brush coupling portion is moved naturally to the interdental space,
and so the user can utilize conveniently the interdental brush.
[0062] Due to the above structure, the interdental brush according
to the present invention can clean conveniently and easily the
interdental space between the molar teeth as well as the
interdental space between the front teeth. In particular, the brush
portion of the interdental brush can be inserted simply and
accurately into the interdental space between the molar teeth
placed in the narrow space.
[0063] Although embodiments have been described with reference to a
number of illustrative embodiments thereof, it should be understood
that numerous other modifications and embodiments can be devised by
those skilled in the art that will fall within the spirit and scope
of the principles of this disclosure. More particularly, various
variations and modifications are possible in the component parts
and/or arrangements of the subject combination arrangement within
the scope of the disclosure, the drawings and appended claims. In
addition to variations and modifications in the component parts
and/or arrangements, alternative uses will also be apparent to
those skilled in the art.
* * * * *