JP3343096B2 - Composite interdental brush - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound interdental brush in which interdental brushes for cleaning interdental portions are combined in series.

[0002]

2. Description of the Related Art Conventionally, as an interdental brush, an interdental brush in which an interdental brush portion is integrally fixed to a tip portion of a handle is known. In the conventional case, there is a problem that the size of the entire interdental brush including the handle becomes relatively large.

In addition, it is necessary to prepare a plurality of interdental brushes with a handle in accordance with the gap between the interdental portions, or to prepare a plurality of interdental brushes having the same thickness for carrying.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks, and makes the overall size of the interdental brush, including the handle, relatively small, and is small and portable with a plurality of interdental brushes. An object is to provide a convenient composite interdental brush.

[0005]

According to a first aspect of the present invention, there is provided a composite interdental brush having an interdental brush at a distal end and a joint at a proximal end.
The first interdental brush holder 3 and the second interdental brush holder 4 are arranged in series, and the proximal joints of the interdental brush holders 3, 4 are detachably fitted and locked. A composite interdental brush, comprising:

[0006] In the invention of claim 2, claim 1
The first interdental brush holder 3 and the second interdental brush each having a male joint 5 protruding to extend axially outward and a female joint 6 concave to extend axially inward at the base end. The interdental brush holder 4 is disposed on the same central axis, and the male joint 5 and the female joint 6 in the first interdental brush holder 3 are respectively connected to the female joint 6 in the other second interdental brush holder 4. It is characterized by being detachably fitted and locked to the male joint 5.

According to a third aspect of the present invention, in the composite interdental brush of the second aspect, each of the male joints 5 in the first and second interdental brush holders 3, 4 is provided with an interdental brush holder 3, 4. And the female joint 6 is a concave portion 23 with a locking projection provided in the interdental brush holders 3 and 4. In a state where the male joint 5 and the female joint 6 of the first and second interdental brush holders 3 and 4 are fitted, each locking projection 8 is locked in a locking groove 9. And

Further, in the invention of claim 4,
The composite interdental brush according to any one of claims 1, 2 and 3, wherein the first and second interdental brush holders (3, 4) are provided on the outer peripheral surface of the base end from the base end to the tip end. It is characterized in that an inclined surface 10 that is inclined so as to increase the diameter is formed.

According to a fifth aspect of the present invention, a brush protecting cap is provided on the first and second interdental brush holders 3, 4 according to any one of the first, second, third and fourth aspects. 11 is detachably fitted and locked.

[0010]

Embodiments of the present invention will be specifically described below with reference to the drawings. First Embodiment FIGS. 1 to 3 show a composite interdental brush according to a first embodiment of the present invention. FIG. 1 is a partially longitudinal side view showing a state in which a brush protection cap is mounted. FIG. 2 is a partially longitudinal side view showing a state in which the interdental brush is separated, and FIG. 3 is a side view, a front view and a bottom view of one interdental brush.

The base end of the wire stem 14 with brush bristles, in which the middle part of a large number of synthetic resin brush bristles 13 is twisted and fixed from the front end part to the middle part of the wire stem 12 made of a stranded wire of stainless metal wire. It is embedded and fixed in a substantially conical tapered portion 15 provided at the distal end portion of the resin-made interdental brush holders 3 and 4. Annular groove 1
5a are formed.

The conical tapered portion 15 has a cylindrical intermediate portion 17 provided with an annular protrusion 16 for supporting a brush protective cap intermediate portion at an intermediate portion, and a brush protective cap end support projecting radially outward. An annular flange 18, an arc-shaped inclined surface 10 having a diameter larger than that of the annular flange 18 and having an outer peripheral surface inclined so as to gradually increase in diameter from a base end toward a distal end, and a cap end support for brush protection. The finger-engaging bulging portions 20 each having a vertical wall surface 19 for a stopper connected to the outer peripheral surface of the annular flange 18 are integrally formed in series one after another to form the soft synthetic resin interdental brush holders 3 and 4.

At the base ends of the soft synthetic resin interdental brush holders 3, 4, an annular protrusion integrally formed with the finger-engaging bulging portion 20 and having a diameter smaller than the outer diameter of the finger-engaging bulging portion 20 is provided. A portion 21 is provided, and an end surface of the annular projecting portion 21 is formed on a flat end surface perpendicular to the central axis of the brush holders 3 and 4, and is made of a soft synthetic material so as to project from the end surface to the rear of the brush holders 3 and 4. A semi-columnar locking projection 22 made of resin is provided integrally with the annular projection 21, and the semi-columnar locking projection 22 is smaller in diameter than the diameter of the cylindrical intermediate portion 16 about the center axis of the brush holders 3 and 4. Are formed so as to protrude rearward from a semicircular portion of the circular surface. A semi-annular locking groove 9 having a concave cross section is formed at the tip of the semi-columnar locking projection 22, and a columnar shape with a locking groove, such as a semi-columnar locking projection 22 having the locking groove 9. Male joint 5 by protrusion 7
Is configured.

The brush holders 3 and 4 extend from the annular projecting portion 21 so as to extend from the semicircular portion of the circular surface having a smaller diameter than the columnar intermediate portion 16 to the tip end of the brush holders 3 and 4. A semi-columnar locking concave portion 23 having a semicircular cross section reaching the cylindrical intermediate portion is provided, and an inwardly projecting semi-circular locking projection 24 is provided at a tip end of the semi-columnar locking concave portion 23. It is provided integrally with the holders 3 and 4. The female joint 6 is constituted by the semi-columnar locking recess 23 and the semi-annular locking projection 24.

The length of the female joint 6 in the longitudinal direction is set slightly longer than the size of the male joint 5, and the semi-annular locking projection 24 of the female joint 6 is formed at the tip of the male joint 5. It is provided at a position where it can be fitted into the semi-annular locking groove 9. That is, the center of the semi-annular locking projection 24 and the center of the semi-annular locking groove 9 are set at the same distance from the end face of the annular projection 21, Are provided slightly wider in the axial direction than the cross section of the projection.

As described above, the male joint 5 and the female joint 6 are formed so as to extend from one of the semicircular surfaces obtained by dividing the circular surface having the same center into two in the axial direction (longitudinal direction) of the brush holder. It is formed so as to extend from the other semicircular surface to the other in the direction (longitudinal direction) of the center axis of the brush holder.

As described above, by providing the male joint 5 and the female joint 6 symmetrically in one brush holder 3, 4, the two brush holders 3, 4 can be mutually connected to the female joint 6 in the one brush holder 3. By press-fitting the male joint 5 of the other brush holder 4 relatively strongly with a finger,
While the center axes of the two brush holders 3 and 4 are aligned, the two brush holders can be fitted and locked so that they cannot rotate with each other. When separating the brush holders 3 and 4,
If the brush holders 3 and 4 are bent in the direction of arrow B, for example, while the finger-engaging bulging portions 20 are gripped by fingers, the brush holders 3 and 4 can be easily separated. Each brush unit is constituted by the brush holders 3 and 4 provided with the male joint 5 and the female joint 6, and these are combined to constitute a composite interdental brush.

In the state where the annular projections 21 are in contact with each other, an annular groove is formed around the annular protrusions 21. When the composite interdental brush is bent and separated, it forms an escape groove, so that it is easily separated. Can be done.

Since the brush holders 3 and 4 can be easily separated and connected to each other as described above, if the color of the brush holder is different for each of the brush hairs having different thicknesses or brush diameters, the appropriate color can be obtained. The interdental brushes of different colors (that is, different interdental brushes) can be appropriately configured according to the purpose of use such as the size of the interdental gap by fitting the interdental brushes with each other. It is convenient. The composite interdental brush of the present invention is, for example, manufactured with a length of about 75 mm with a cap attached.

A substantially transparent or translucent synthetic resin brush protection cap 11 is fitted over the outer peripheral surface of the annular protrusion for supporting the intermediate portion of the brush protection cap in the synthetic resin brush holders 3 and 4 and the annular flange. At the same time, the opening end face of the brush protection cap 11 is in contact with the vertical wall surface 19.

Said synthetic resin brush protection cap 11
A large-diameter inner peripheral surface 25 is provided on the inner peripheral surface of the opening-side end of the synthetic resin brush holders 3 and 4. It is formed to have a slightly smaller diameter, and has a large diameter inner peripheral surface 2
5 is set to be larger than the width of the annular flange 18, and the annular vertical wall 2 is connected to the large-diameter inner peripheral surface 25.
6 is provided so that a small-diameter inner peripheral surface 27 connected to the annular vertical wall 26 extends toward the back side in the longitudinal direction of the brush protection cap 11. Ring projection 16 for bearing cap middle part support
Is set slightly smaller than the outer diameter dimension of.

The brush protective cap 11 fitted as described above is prevented from being displaced in the direction perpendicular to the axis and in the axial direction, and has a large diameter formed on the outer peripheral surface of the cylindrical intermediate portion 17. Since the small-diameter inner peripheral surface 27 of the transparent synthetic resin brush protecting cap 11 is pressed and supported by the annular projecting portion 16 so as to be pressed, the two synthetic resin holders 3 and 4 are supported. In the state in which is fitted and connected, if the synthetic resin brush protection cap 11 is fitted to only one of the synthetic resin holders 3, the fitted plastic brush protection cap is fitted. 11 can be used as a handle to clean the interdental portion using the other interdental brush, but it is also possible to use a composite interdental brush with all brush protective caps 11 removed. Often, Rui When the cleaning of the narrow mouth may be used in the separation state.

The two synthetic resin brush protecting caps 11 are provided between the synthetic resin interdental brush holders 3 and 4.
Brush protection cap 1 fitted and mounted on
1 to remove one brush protection cap 1
When the opening 1 is gripped relatively strongly with the fingers together with the synthetic resin interdental brush holders 3 and 4 and the other brush protection cap 11 is gripped and moved in the axial direction, the shaft can be easily rotated. Can be removed by moving in the direction.

[Second Embodiment] FIGS. 4 and 5 show a composite interdental brush according to a second embodiment of the present invention. In this embodiment, the finger engagement in the first embodiment is described. The joint bulging portion 20 is changed to an annular flange 28 shortened in the axial direction.
Although the annular projection 21 on the rear surface is slightly widened in the axial direction, other configurations and operations are the same as those of the above-described embodiment, and the same portions are denoted by the same reference numerals and described. Omitted.

[Third Embodiment] FIGS. 6 and 7 show a composite interdental brush according to a third embodiment of the present invention. In this embodiment, compared to the first embodiment, FIG.
The synthetic resin holders 3 and 4 are fitted so that the annular bulges 20 and the annular grooves 15a on the base side rear surfaces of the synthetic resin brush holders 3 and 4 are omitted, and the annular flanges 28 come into direct contact with each other. It is configured to be connected to each other.
Are formed (four in the illustrated case), and the projections 29 are configured to be engaged with the small-diameter inner peripheral surface 27 of the brush protection cap 11 in a press-fit manner. Are the same as those in the above-described embodiment, and therefore, the same portions are denoted by the same reference numerals and description thereof will be omitted.

In practicing the present invention, the whole body of the interdental brush holders 3, 4 may be made of a soft synthetic resin, and the conical tapered part 15 and the male joint 5 are made of a soft synthetic resin. You may make it. Moreover, you may make it comprise a soft rubber or a soft synthetic rubber.

[0027]

According to the first aspect of the present invention, the first interdental brush holder 3 and the second interdental brush holder 4 having the interdental brush 1 at the distal end and the joint 2 at the base end. Are arranged in series, and each interdental brush holder 3,
Since the base-side joints 4 are detachably fitted and locked to each other, it is possible to obtain an effect such as a compact and low-cost portable inter-dental brush which is convenient to carry.

In the case of the invention of claim 2, each of the first
In addition, by simply fitting or separating the male joint 5 and the female joint 6 of the second interdental brush holder, the interdental brush holder can be easily integrated and separated, and the effect can be easily achieved. Can be.

Further, in the case of the third aspect of the present invention, the interdental brush holders 3 and 4 can be prevented from coming off in the axial direction in a state of being connected and integrated. The bending of the male joint 5 can be separated from the female joint 6 while the male joint 5 is being bent and deformed only by applying bending deformation about the joint surfaces of the holders 3 and 4. There are effects such as natural restoration or correction to the original state.

Further, in the case of the invention of claim 4, the first
Also, on the outer peripheral surface of the base end portion of each of the second interdental brush holders 3 and 4, there is formed an inclined surface 10 which is inclined so as to gradually increase in diameter from the base end portion to the distal end portion. Even if it is engaged, since the finger can be engaged without retreating in the axial direction, there is an effect that the operation of separating or integrating the interdental brush holders can be facilitated.

Furthermore, in the case of the invention of claim 5, the brush protecting cap 11 is detachably fitted and locked to the first and second interdental brush holders 3, 4.
When fitted to the interdental brush holders 3 and 4 on both sides,
When the portable device is not in use, the brush portion can be protected, and when the interdental brush in the composite state is appropriately replaced to form a different combination of interdental brushes, the brush protecting cap 11 can be used. There is an effect that it is possible to separate or combine while grasping.

[Brief description of the drawings]

FIG. 1 (a) is a partially longitudinal side view showing a composite interdental brush according to a first embodiment of the present invention, and FIG. 1 (b) shows the composite interdental brush with a brush protection cap attached. It is a part longitudinal section side view.

FIG. 2 is a partially longitudinal front view showing a state in which the composite interdental brush of the first embodiment is separated.

3A is a partially longitudinal front view showing one of the interdental brushes shown in FIG. 2, FIG. 3B is a front view seen from the joint side, and FIG. 3C is a plan view. .

FIG. 4 (a) is a partially longitudinal side view showing a composite interdental brush according to a second embodiment of the present invention, and FIG. 4 (b) shows the composite interdental brush with a brush protection cap attached. It is a part longitudinal section side view.

5 (a) is a partially longitudinal front view showing one interdental brush shown in FIG. 4, (b) is a front view as viewed from the joint side, and (c) is a plan view. (D) is a sectional view taken along line AA of (a).

FIG. 6 (a) is a partially longitudinal side view showing a composite interdental brush according to a third embodiment of the present invention, and FIG. 6 (b) shows the composite interdental brush with a brush protection cap attached. It is a part longitudinal section side view.

7 (a) is a partially longitudinal front view showing one of the interdental brushes shown in FIG. 6, (b) is a front view as viewed from the joint side, and (c) is a plan view. .

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 interdental brush 2 joint 3 first interdental brush holder 4 second interdental brush holder 5 male joint 6 female joint 7 columnar projection 8 locking projection 9 locking groove 10 inclined surface 11 brush protection cap 12 wire stem DESCRIPTION OF SYMBOLS 13 Synthetic resin brush bristles 14 Wire stem with brush bristle 15 Conical tapered part 15a Annular groove 16 Annular protrusion for supporting cap middle part 17 Cylindrical middle part 18 Circular flange for cap end support 19 Vertical wall surface 20 Inflation for finger engagement Projection 21 Annular projection 22 Semi-columnar locking projection 23 Semi-columnar locking recess 24 Semicircular locking projection 25 Large-diameter inner peripheral surface 25 Large-diameter inner peripheral surface 26 Annular vertical wall 27 Small-diameter inner peripheral surface 28 Annular flange 29 Convex Department

Claims (5)

(57) [Claims] 1. A first interdental brush holder having an interdental brush at a distal end and a joint 2 at a base end, and a second interdental brush holder.
A composite interdental brush, wherein the interdental brush holders are arranged in series, and the proximal joints of the respective interdental brush holders are detachably fitted and locked. 2. A first interdental brush holder and a second interdental brush holder each having at its base end a male joint protruding to extend axially outward and a female joint recessed to extend axially inward. Are arranged on the same central axis, and the male joint and the female joint of the first interdental brush holder are detachably fitted and locked to the female joint and the male joint of the other second interdental brush holder, respectively. The composite interdental brush according to claim 1, wherein the brush is formed. 3. Each of the male joints in the first and second interdental brush holders is a column-shaped projection with a locking groove made of a soft synthetic resin provided integrally with the interdental brush holder, and each of the female joints is provided. Is a concave portion with a locking projection provided in the interdental brush holder. When the male and female joints of the first and second interdental brush holders are fitted, each locking projection is engaged. The composite interdental brush according to claim 2, wherein the brush is locked in a stop groove. 4. An inclined surface is formed on the outer peripheral surface of the base end of the first and second interdental brush holders so as to gradually increase in diameter from the base end to the front end. The composite interdental brush according to any one of claims 1, 2 and 3, wherein 5. The brush protection cap according to claim 1, wherein said first and second interdental brush holders are detachably fitted with and engaged with a brush protecting cap. Composite interdental brush.