JP2009050708A - Interdental brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interdental brush capable of being conveniently used for any interdental space from a front teeth to a back teeth area and capable of being easily and accurately inserted into the interdental space in the narrow back teeth area. <P>SOLUTION: The interdental brush includes a handle part; a brush connection part disposed at the front end of the handle part; a brush body having a bending part which permits bending of the brush connection part to the handle part in one direction but restrains bending in the opposite direction; and a brush part connected to the brush connection part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an interdental brush.

  The interdental brush is a tool for cleaning between adjacent teeth (hereinafter referred to as 'interdental'), and is very effective in removing small foreign substances and plaques sandwiched between the teeth.

  Such an interdental brush includes an I-type interdental brush 101 in which the brush body 110 and the brush portion 120 are arranged in a straight line as shown in FIG. 1, and a brush body 210 as shown in FIG. The tip portion 211 and the brush portion 220 are roughly divided into L-type interdental brushes 201 formed substantially at right angles.

  Generally, in the I type interdental brush, since the brush body and the brush portion are formed in a straight line, it is very difficult to insert the brush between the teeth in the back tooth region. Thereby, the I-type interdental brush is mainly used for interdental cleaning of the front tooth portion.

  In addition, since the L-type interdental brush has a structure in which the brush is bent at a substantially right angle at the tip of the brush body, it is easier to insert the brush between the teeth in the back tooth region as compared with the I type. Thereby, the L-type interdental brush is mainly used for interdental cleaning in the back tooth region.

  Furthermore, since the L-type interdental brush can clean the interdental region of the front tooth region, the L-type interdental brush has recently been used more widely than the I-type interdental brush. L-type interdental brushes are commercially available.

  A typical example of an L-type interdental brush is, as shown in FIG. 2, a brush-integrated L-type interdental brush in which a brush portion is integrally joined to the tip of a brush body bent at a right angle. Choosing a brush and an L-type interdental brush that replaces the brush portion at the tip of the brush body in a direction perpendicular to the brush body, as disclosed in Patent Document 1 and the like Can do.

  On the other hand, as an interdental brush of another form, as disclosed in Patent Document 1 and the like, a brush rotation type in which a brush portion is coupled to a tip portion of a brush body so as to be rotatable in one direction around a hinge. Interdental brushes have been developed.

  This brush rotation type interdental brush allows the user to selectively rotate the brush part in a straight line form or an orthogonal form with respect to the brush body, thereby cleaning the front teeth and the back teeth part. Can be used by being rotated in a straight line shape or an L-shape.

  On the other hand, as another interdental brush, as disclosed in Patent Document 2 or the like, the brush wire can be freely bent or bent at the tip of the brush body into which the brush wire is inserted. A brush-free folding interdental brush having a constricted portion has been developed.

  This brush-free folding interdental brush should be used by bending the brush part appropriately when cleaning the front teeth and back teeth part by bending the brush part in the form desired by the user. Can do.

  However, the conventional interdental brush as described above has the following problems.

  The L-type interdental brush has a structure in which the brush part is bent in an L shape with respect to the brush body, so when inserting a brush between the teeth in the back tooth region, the space between the back tooth and the cheek is narrow. The use was very inconvenient.

  Further, since the space between the back teeth and the cheeks is narrow, the brush is not inserted between the teeth while contacting the back teeth, and frequently bends outside the teeth.

  The brush rotation type interdental brush is very inconvenient because the user must rotate the brush part one by one.

Also, the brush-free bent interdental brush is very inconvenient because the user must always bend the brush part. Further, since the brush portion is bent in an arbitrary direction by an external force, the brush is caught at the entrance between the teeth in the back tooth region, and is not inserted between the teeth, and is frequently bent outside the teeth.
Korean Registered Utility Model No. 20-0225939 Japanese Utility Model Publication No. 4-62130

  The present invention is for solving the above-mentioned problems, and it is possible to conveniently clean (wash) the space between the teeth of the user's front teeth and the teeth of the back teeth region. Another object of the present invention is to provide an interdental brush in which the brush portion is easily and accurately inserted between teeth.

  In the interdental brush according to the present invention, the object is to provide a gripping portion, a brush coupling portion provided at a distal end portion of the gripping portion, and one direction (first direction) of the brush coupling portion with respect to the gripping portion. An interdental brush comprising: a brush body having a bent portion that allows bending and suppresses bending in the opposite direction (second direction); and a brush portion coupled to the brush coupling portion. Achieved by:

  Here, the bending portion is composed of a bending groove and a bending suppression groove formed on both sides of the tip portion of the gripping portion; the bending groove and the bending suppression groove are formed in a direction orthogonal to the longitudinal direction of the gripping portion. In addition, it is preferable that both inner side surfaces of the bending groove form a predetermined angle with each other, and both inner side surfaces of the bending suppression groove are spaced apart from each other at a narrow interval.

  In addition, it is preferable that both inner side surfaces of the bending groove have an obtuse angle, and both inner side surfaces of the bending groove are spaced apart from each other in parallel.

  The grip portion has a curved shape, the bending groove is formed on the first curved surface side of the grip portion corresponding to the user's teeth, and the bending suppression groove is on the opposite side of the first curved surface. More preferably, it is formed on the second curved surface.

  At this time, it is preferable that friction surfaces are formed on both sides of the grip portion.

  Moreover, it is preferable that the core wire of a brush part is inserted in a brush coupling | bond part, or a brush part is detachably couple | bonded with a brush coupling | bond part.

  The interdental brush according to the present invention can clean (clean) both conveniently and easily between the front teeth of the user and between the back teeth. In particular, the brush portion of the interdental brush of the present invention can be easily and accurately inserted between the teeth in the back tooth region having a narrow space.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 3 is a perspective view of an interdental brush according to a preferred embodiment of the present invention, and FIGS. 4 to 6 are side views showing the bending action of the tip portion of the interdental brush in FIG. As shown in these drawings, an interdental brush 1 according to the present invention includes a brush body 3, a brush portion 5 that is coupled to a tip end region of the brush body 3 and cleans the teeth, and a brush that protects the brush portion 5. And a cap 7.

  The brush body 3 includes a gripping portion 10 gripped by a user, a brush coupling portion 20 formed so as to be bendable from a distal end portion of the gripping portion 10 to a user's tooth side, and a bending that allows the brush coupling portion 20 to bend. Part 30. The brush body 3 is preferably made of a soft synthetic resin material, and the grip portion 10, the brush coupling portion 20, and the bent portion 30 are preferably integrally formed by injection molding.

  The grip portion 10 of the brush body 3 preferably has a curved shape. This is a shape corresponding to a structure in which a section from the back tooth region toward the front tooth is curved when a general curved structure of the dentition of a human body is viewed from a plane. As a result, when the interdental region of the back tooth region is cleaned, the gripping portion 10 occupying most of the brush body 3 is brought into close contact with the user's dentition, and the feeling of foreign matter is not felt to the maximum. In addition, the grip portion 10 of the brush body 3 is elastically deformable and can have various forms such as a linear form.

  The grip portion 10 of the brush body 3 has a rigidity sufficient to smoothly transmit this force to the brush portion 5 when the user moves the brush body 3, and appropriately adjusts the curved structure of the user's dentition. It is preferable that it has flexibility so that it can respond. Thereby, when cleaning between teeth, an appropriate force is transmitted to the brush part 5, and the user does not feel a foreign body feeling in the oral cavity.

  In addition, friction surfaces 15 are formed on both side surfaces of the intermediate region in the longitudinal direction of the grip portion 10 so that the user can stably grip. The friction surface 15 is preferably formed as a flat surface so that the user can easily hold it with the index finger and thumb finger, and it is preferable to form a fine protrusion on the surface to prevent slippage.

  On the other hand, as described above, since the brush portion 5 is coupled to the brush coupling portion 20 of the brush body 3, the coupling structure of the brush portion 5 is as shown in FIG. 3 and FIGS. The rear end region of the core 5a of the brush portion 5 is preferably inserted (inserted and fixed) into the brush coupling portion 20.

  Here, as shown in FIGS. 11 and 12, the connecting structure of the brush portion 5 is a shape fitting structure 21 that can be attached to and detached from the rear end portion of the brush portion 5 and the brush connecting portion 20 of the brush body 3 and screw fastening. Structure 23 may be used. Thereby, wasteful use of resources can be prevented and the sanitary brush part 5 can be always used by replacing only the brush part 5 while using the brush body 3 continuously.

  On the other hand, the bending portion 30 of the brush body 3 includes a bending groove 31 that allows bending in one direction of the brush coupling portion 20, a bending suppression groove 33 that suppresses bending in the opposite direction of the brush coupling portion 20, and a bending groove. 31 and a connecting piece 35 formed between the bending suppression groove 33.

  The bending groove 31 and the bending suppression groove 33 are formed in a direction orthogonal to the longitudinal direction of the gripping portion 10, and the connecting piece 35 is a process in which the bending groove 31 and the bending suppression groove 33 are formed during the injection molding of the brush body 3. It is naturally formed with a structure in which the gripping part 10 and the brush coupling part 20 are connected.

  Among them, the bent groove 31 is formed so that both inner side surfaces form a predetermined angle with each other. Therefore, when the brush portion 5 and the tip end region of the gripping part 10 are almost straight, both inner side surfaces of the bent groove 31 are formed. Is preferably an obtuse angle. As a result, as shown in FIG. 5, the brush coupling portion 20 bends in a direction substantially orthogonal to the distal end portion of the grip portion 10 at a position where both inner side surfaces of the bending groove 31 are in contact with each other.

  The bent groove 31 is formed on the first curved surface 11 side corresponding to the space between the user's teeth in both curved surfaces of the grip 10. Thereby, the brush part 5 turns to a user's tooth | gear in the position where the brush coupling | bond part 20 bent.

  Here, the bending groove 31 can be formed in various forms within a range in which the brush coupling portion 20 can be bent in a direction orthogonal to the distal end portion of the grip portion 10 such as an arc-shaped groove.

  Further, the bending suppression groove 33 is formed on the second curved surface 13 side opposite to the grip portion 10, and is formed in a form in which both inner side surfaces are separated so as to be adjacent to each other at a narrow interval. It is preferable that the space between both inner side surfaces of the bending suppression groove 33 is formed at a substantially contacting space. As shown in FIG. 6, when the brush coupling portion 20 is to be bent to the opposite side of the bending groove 31, the brush coupling portion 20 is bent in the opposite direction while both inner side surfaces of the bending suppression groove 33 are in contact with each other. It is intended to be suppressed. Thereby, the brush part 5 does not bend to the user's cheek side arbitrarily in the back tooth region.

  Here, the bending suppression groove 33 may be formed in a structure in which both inner side surfaces of the bending suppression groove 33 form a narrow angle within a range that prevents the brush coupling portion 20 from bending to the opposite side of the bending groove 31 to the maximum extent.

  The bent portion 30 having such a structure is composed of only bent grooves 31 and connecting pieces 35 formed on both sides of the distal end portion of the grip portion 10 as in the interdental brush 1 'shown in FIG. May be.

  On the other hand, the brush cap 7 is preferably provided in the form of a tube penetrating in the front-rear direction while being shape-fitted to the distal end region of the grip portion 10 surrounding the brush portion 5. The brush cap 7 prevents the brush portion 5 from being contaminated when the interdental brush 1 is not used. Moreover, drying of the brush part 5 is accelerated | stimulated by the structure penetrated in the front-back direction. Further, the brush cap 7 may have a tube shape in which a front portion is closed.

  The interdental cleaning process in the back tooth region using the interdental brush 1 according to the present invention having such a configuration will be described with reference to FIGS.

  First, as shown in FIG. 7, the interdental brush 1 is inserted between the tooth inside the user's oral cavity and the cheek from the brush portion 5 side, and the tip of the brush portion 5 moves between the desired teeth. Contact with the teeth in the entrance area.

  Further, as shown in FIG. 8, the bending portion 31 of the bending portion 30 is bent by the user's force transmitted from the gripping portion 10, and the brush portion 5 is bent between the teeth.

  At this time, the brush portion 5 does not bend on the cheek side of the user on the opposite side between the teeth due to the bending suppression groove 33, but bends only on the interdental side. That is, the bending of the brush coupling portion 20 in the opposite direction is suppressed while both inner surfaces constituting the bending suppression groove 33 are in contact with each other.

  Next, when the user continues to push the grip portion 10, the brush portion 5 bent to the interdental side is easily inserted between the corresponding teeth as shown in FIG.

  In this state, if the user repeatedly pushes and pulls the grip portion 10 gradually, the brush portion 5 cleans the teeth while moving smoothly between the teeth.

  Thereby, between teeth, such as a back tooth located in the deep area | region in an intraoral area, can be wash | cleaned easily.

  As described above, the interdental brush according to the present invention allows the brush coupling portion to bend in one direction and suppress the bending in the opposite direction by the bent portion formed at the distal end portion of the gripping portion. Even in a narrow space between the back teeth and cheeks, the brush does not bend outwards and can be easily inserted between the teeth.

  In addition, when the brush comes into contact with the entrance between the teeth in the oral cavity, the brush coupling portion naturally bends between the teeth, which makes the use very convenient.

  With the above-described structure, the interdental brush according to the present invention can conveniently and easily clean (clean) both the front teeth and the back teeth region of the user. In particular, the brush portion of the interdental brush of the present invention can be easily and accurately inserted between the teeth in the back tooth region having a narrow space.

  The present invention is not limited to the above-described embodiments, and those having ordinary knowledge in the technical field that the present invention can be implemented in various forms without departing from the technical idea of the present invention. If so, it can be easily understood.

It is a perspective view of an example of the conventional interdental brush. It is a perspective view of an example of another form of the conventional interdental brush. It is a perspective view of an example of the interdental brush which concerns on the preferable embodiment of this invention. It is the side view which showed the bending effect | action of the interdental brush front-end | tip part of FIG. It is the side view which showed the bending effect | action of the interdental brush front-end | tip part of FIG. It is the side view which showed the bending effect | action of the interdental brush front-end | tip part of FIG. It is the figure which showed the use condition of the interdental brush which concerns on this invention. It is the figure which showed the use condition of the interdental brush which concerns on this invention. It is the figure which showed the use condition of the interdental brush which concerns on this invention. It is a side view of the interdental brush which concerns on another embodiment of this invention. It is the fragmentary perspective view which showed the various brush joint structure of the interdental brush which concerns on this invention. It is the fragmentary perspective view which showed the various brush joint structure of the interdental brush which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Brush body 5 Brush part 7 Brush cap 10 Gripping part 20 Brush coupling part 30 Bending part 31 Bending groove 33 Bending suppression groove

Claims (7)

A brush having a gripping portion, a brush coupling portion provided at a tip portion of the gripping portion, and a bending portion that allows bending in one direction of the brush coupling portion with respect to the gripping portion and suppresses bending in the opposite direction. With the body;
A brush portion coupled to the brush coupling portion;
An interdental brush characterized by containing. The bent portion is composed of a bent groove and a bent suppression groove formed on both sides of the distal end portion of the gripping portion;
The bending groove and the bending suppression groove are formed in a direction orthogonal to the longitudinal direction of the gripping portion, both inner side surfaces of the bending groove form a predetermined angle with each other, and both inner side surfaces of the bending suppression groove are mutually The interdental brush according to claim 1, wherein the interdental brush is separated at a narrow interval. The interdental brush according to claim 2, wherein both inner side surfaces of the bending groove form an obtuse angle, and both inner side surfaces of the bending groove are spaced apart from each other in parallel. The grip portion has a curved shape, the bending groove is formed on the first curved surface side of the grip portion corresponding to the user's teeth, and the bending suppression groove is the first curve surface on the opposite side of the first curved surface. The interdental brush according to claim 2 or 3, wherein the interdental brush is formed on two curved surfaces. The interdental brush according to any one of claims 1 to 4, wherein friction surfaces are formed on both sides of the grip portion. The interdental brush according to any one of claims 1 to 5, wherein the core wire of the brush portion is inserted into the brush coupling portion. The interdental brush according to any one of claims 1 to 6, wherein the brush portion is detachably coupled to the brush coupling portion.

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