JPH0947322A - Inter-tooth brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a wire from being curled even when a brush part is repeatedly bent by holding the brush part so as to be freely bent through a movable connection part to a handle. SOLUTION: An inter-tooth brush is constituted by connecting a brush 1 and a handle 2 through a movable connection part 3. The movable connection part 3 is composed of a turning part 3b, where projections 3a are formed, and a holding part 3d where holes 3a for engaging/disengaging the projections 3a are formed, and the turning part 3b and the holding part 3d are respectively formed at the brush part 1 and the handle 2. Therefore, the projections 3a and the holes 3c are engaged/disengaged so that the brush part 1 and the handle 2 can be separated and the brush part 1 of a section to be consumed can be exchanged. Besides, since the turning part 3b is freely turned around the projections 3a, stageless adjustment for the bending angle of the brush part 1 is enabled corresponding to the part to be cleaned. Further, the interval between the holding parts 3d is made narrow and the brush part is frictionally held with the turning part 3b so that the bending state of the brush part 1 can be maintained even at the time of brushing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interdental brush for cleaning tooth gaps and the like, and more particularly to a mechanism for flexibly holding a brush portion with respect to a handle.

[0002]

2. Description of the Related Art Conventionally, an interdental brush has been well known, and its basic structure is to twist a wire sandwiching a bundle of filaments to form a brush portion and embed one end of the wire in a handle. It is common. And since the wire can be bent with fingers, when grasping the handle and inserting the brush part between the teeth, bend the wire and make a certain angle while inserting the brush from between the back teeth and inside the teeth for cleaning. It can be performed.

[0003]

However, since a wire having a bending tendency does not return to a straight line even if it is straightened, it cannot be bent in various directions after being used a plurality of times. There's a problem.

The present invention solves such a problem, and an object thereof is to provide an interdental brush in which the wire does not have a bending tendency even if the brush portion is repeatedly bent.

[0005]

In order to achieve the above object, the invention according to claim 1 of the present invention comprises an interdental brush in which the brush portion and the handle can be separated. Therefore,
The brush part, which is a consumable part, can be replaced. Further, the technical means of holding the brush portion in a freely bendable manner with respect to the handle via the movable connecting portion was used. Therefore, the angle between the brush portion and the handle can be adjusted by the movable connecting portion without bending the wire.

According to a second aspect of the present invention, in the first aspect of the present invention, a means is used in which the movable connecting portion is composed of a cell-supporting convex portion and a cell-supporting concave portion fitted therein. Specifically, this can be achieved by configuring the movable connecting portion with a ball joint. In this case, the brush portion can be rotated 360 degrees like a mortar with respect to the handle, and the bending angle of the brush portion can be arbitrarily adjusted within the locus (conical shape) drawn at this time.

According to a third aspect of the present invention, in addition to the second aspect of the invention, the notch is provided in the abutment recess. This notch makes it easy to attach and detach the convex portion and the concave portion.
Further, the brush portion can be bent at an angle according to the depth of the cut.

According to a fourth aspect of the invention, in the third aspect of the invention, a plurality of notches are provided at different depths. Therefore, the bending angle of the brush portion can be changed for each cut.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. First, a first embodiment will be described with reference to FIGS. In the figure, 1 is a brush portion formed by twisting a wire 1a to form a filament bundle 1b in a spiral shape, and 2 is a handle that functions as a finger knob during brushing. To form an interdental brush. In this embodiment, the movable connecting portion 3
Is composed of a rotating portion 3b having a protrusion 3a and a holding portion 3d having a hole 3c in which the protrusion 3a can be engaged and disengaged. The rotating portion 3b and the holding portion 3d are respectively attached to the brush portion 1 and the handle 2. It is provided. Therefore, the brush portion 1 and the handle 2 can be separated by engaging and disengaging the protrusion 3a and the hole 3c, and the brush portion 1 as a consumable portion can be replaced. In particular, by molding the holding portion 3d with a material having elasticity such as plastic, it is easy to engage and disengage the protrusion 3a and the hole 3c, that is, to attach and detach the brush portion 1 and the handle 2. Further, since the rotating portion 3b is rotatable around the protrusion 3a as an axis, the brush portion 1 can be bent at an arbitrary angle with respect to the handle 2. That is, the bending angle of the brush portion 1 can be adjusted steplessly according to the cleaning location. further,
By narrowing the interval between the sandwiching portions 3d and frictionally sandwiching the rotating portion 3b, the movement of the rotating portion 3b can be braked, and the bending state of the brush portion 1 can be maintained even during brushing. Reference numeral 4 in the figure protects the brush portion 1 and the handle 2
Is a stopper of a cap (not shown) used when extending the length of the.

Next, a second embodiment will be described with reference to FIGS. The basic structure of the brush part 1 and the handle 2 is the same as that of the above-mentioned embodiment. In this embodiment, the brush portion 1 is provided with the cell-supporting convex portion 5a, and the handle 2 is provided with the cell-supporting concave portion 5b that fits with the cell-supporting convex portion 5a to form the movable connecting portion 5. Specifically, the movable joint portion 5 is constituted by a ball joint, and the brush portion 1 is held in a separable and bendable manner with respect to the handle 2. By configuring the movable connecting portion 5 in this way, the brush portion 1 can be shaped like a mortar 36 around the cell-holding convex portion 5a.
It can be rotated by 0 degrees, and the brush portion 1 can be bent at an arbitrary angle within the range. In addition, the protruding portion 5a
It is possible to maintain the bent state of the brush portion 1 by tightly fitting the to the recessed portion 5b.

Next, a third embodiment will be described with reference to FIGS. Also in this embodiment, the movable connecting portion 5 is formed of a ball joint including a cell-supporting convex portion 5a and a cell-supporting concave portion 5b. And notches 6 and 6 are provided at two positions of the cell holding recess 5b so as to face each other. Therefore, this notch 6
The brush part 1 can be bent toward. The bending angle of the brush part 1 is determined by the depth of the notch 6, and the bending angle of the brush part 1 can be adjusted by providing a plurality of notches 6 at different depths. Further, in this embodiment, as shown in FIG. 8, the width of the opening 6a of the notch 6 is made smaller than the diameter of the shaft 5c provided on the cell-bearing convex portion 5a, so that the opening 6a can be axially aligned. The movement of 5c was restricted, and the bent state of the brush portion 1 during brushing could be maintained. However, the brush portion 1 can be bent by a finger.

[0012]

As described above, since the brush portion is held to the handle through the movable connecting portion, the brush portion can be bent at a predetermined angle, and even if this is repeated, the bending tendency of the wire I can't get it. Further, when the movable connecting portion is composed of the cell-supporting convex portion and the cell-supporting concave portion, the brush portion can be bent in any direction with respect to the handle. Furthermore, by providing the notch in the cell-holding concave portion, the brush portion can be bent along the notch, and the cell-holding convex portion can be easily fitted and removed. Furthermore,
By making multiple notches at different depths,
The brush can be bent at an angle that matches the depth.

[Brief description of drawings]

FIG. 1 is an exploded view of an interdental brush with a handle shown in section in a first embodiment.

FIG. 2 is a perspective view of the interdental brush showing the movement of the brush portion in the first embodiment.

FIG. 3 is an exploded perspective view of an interdental brush according to a second embodiment.

FIG. 4 is a front view of a movable connecting portion in which a part of a cell holding recess is cut away in the second embodiment.

FIG. 5 is a perspective view of the interdental brush showing the movement of the brush portion in the second embodiment.

FIG. 6 is an exploded perspective view of an interdental brush according to a third embodiment.

FIG. 7 is a perspective view of the interdental brush showing the movement of the brush portion in the third embodiment.

FIG. 8 is a transverse cross-sectional view of a movable connecting portion in which the axis of the bulge-holding convex portion is horizontally cross-sectioned in the third embodiment.

[Explanation of symbols]

 1 Brush part 2 Handle 3, 5 Movable connection part 4 Stopper 6 Notch

Claims (4)

[Claims] 1. An interdental brush in which a brush part and a handle are separable, and the brush part is flexibly held to the handle via a movable connecting part. 2. The interdental brush as claimed in claim 1, wherein the movable connecting portion comprises a bulge-holding convex portion and a bulge-holding concave portion fitted therein. 3. The interdental brush according to claim 2, wherein a notch is provided in the cavity holding recess. 4. The interdental brush according to claim 3, wherein a plurality of notches are provided at different depths.