JP2990353B1 - Interdental brush - Google Patents

Abstract

To provide an interdental brush which can be used safely and which can be used in a state where a brush portion is always straight without being easily bent even when repeatedly pushed and pulled. SOLUTION: A resin molded product A in which a handle portion 1 and a tip core 2 are integrally formed, and an outer peripheral surface of the tip core 2 is provided with a flocking 3 projecting radially. Further, a fin-like projection 4 projecting in the radial direction is formed on the outer periphery of the tip core 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interdental brush used for removing meal residue accumulated between teeth and removing plaque generated on teeth.

[0002]

2. Description of the Related Art As shown in FIG. 8 , a conventional interdental brush of this type comprises a handle portion 11 formed of a synthetic resin material in a rod shape and a brush body.
Two thin metal wires 12 of about 0.2 mm are arranged in parallel, and a fine nylon monofilament yarn 1 is interposed therebetween.
The spiral brush body C is formed by twisting while sequentially interposing a large number of the filaments 3 so that the nylon monofilament yarn 13 spirally projects in the radial direction, and the length of the projecting filament yarn 13 is trimmed by post-processing.
This was inserted into one end of the handle portion 11 into a recessed hole 11a formed in the axial direction and fixed by adhesion.

[0003]

Therefore, in this kind of conventional interdental brush, the metal wire 12 as a strength member to be inserted between the teeth is required to be inserted between the teeth as described above. Due to the necessity of using thin wires and the same thickness from the base to the tip, it is weak to the compressive force in the axial direction. Caution was required for repeated insertion of. In addition, since the metal wire 12 protrudes from the distal end portion, it is necessary to pay close attention so as not to damage the gums at the initial stage of insertion.

Accordingly, the present invention solves the problem of such a conventional interdental brush, can be used safely, and the brush portion does not easily bend even when repeatedly pushed and pulled. An object of the present invention is to provide an interdental brush that can be used in a straight state at all times.

[0005]

One structure of the interdental brush according to the present invention for achieving the object will be described with reference to the reference numerals used in the embodiments. A radially projecting flocking 3 is applied to the outer peripheral surface of the tip core 2 of the resin molded product A obtained by integrally molding the resin molding A, and the flocking 3 is formed by electrodeposition flocking means.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has such a configuration. In the practice, the flocking 3 on the tip core 2 is performed by electrodeposition flocking means, so that the flocking is easy. In addition, the length of the planted filament can be automatically adjusted to a predetermined constant length, and the advantage that post-processing is not required can be enjoyed. Further, the molding resin material of the handle portion 1 and the tip core 2 is not particularly limited. For example, when integrally molded with a nylon resin, the tip core 2 is rich in elasticity and resilience even if the tip core 2 is thin, so that it is easy This is preferable in that it does not break or plastically deform.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views showing a first embodiment of the present invention. FIG. 1 shows the entire structure, and FIG. 2 is a cross-sectional structure taken along line AA in FIG. Is shown.

The interdental brush shown in this embodiment has a rod-like shape having a circular cross section, and has a handle portion 1 having a protruding ring portion for engaging a cap near a tip (upper end in the figure).
And a tip core 2 having a circular cross section and a tapered tip at the tip end thereof.
A resin molded article A integrally molded with a nylon resin is formed. Next, on the outer peripheral surface of the tip core 2 of the resin molded product A,
As shown in FIG. 2, the flocking 3 projecting in the radial direction is formed by electrodeposition flocking. Symbol c indicates a protective cover for the brush portion.

FIG. 3 shows an example of the cross-sectional shape of the tip core 2 according to this embodiment, other than the above-mentioned circular shape. 2a is an elliptical shape, 2b is an oblong shape, and 2c is a square shape. 2d shows an octagonal shape. FIG.
The cross-sectional shape of the handle portion 1 referred to in the above embodiment is exemplified for a cross-sectional shape other than a circular cross-section, where 1a is a circular outer peripheral surface formed with a number of vertical grooves, 1b is a square shape,
1c shows a shape in which a vertical groove is formed on the outer peripheral surface of a hexagon.

FIGS. 5 to 7 show still another embodiment, respectively, and the one shown in FIG.
Formed at an angle to the handle portion 1.
FIG. 6 shows an example in which a pick 5 for removing food waste is integrally formed at the lower end of the handle portion 1 in the first embodiment. In the embodiment shown in FIG. 7, the tip portion of the tip core 2 is an area without flocking, and this portion is formed on the pick 5 for removing food waste.

Although the embodiments which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to only the structures shown in these embodiments, but has the above-mentioned constitutional requirements according to the present invention. In addition, the present invention achieves the object of the present invention, and can be implemented with appropriate modifications within a range having the following effects.

[0012]

As is clear from the above description, the tip core constituting the strength member of the flocked portion is made of a resin molded product, and the flocked portion is electrodeposited. The length can be automatically adjusted to a fixed length set in advance, and the advantage of not requiring post-processing can be enjoyed.Also, it can be used safely, and can be repeatedly pushed and pulled. It has a remarkable effect that it is not easily bent and the brush portion can always be used in a straight state.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

FIG. 3 is a cut end view showing a modified example of the tip core.

FIG. 4 is a cut end view showing a modified example of a handle portion.

FIG. 5 is a front view showing a second embodiment.

FIG. 6 is a front view showing a third embodiment.

FIG. 7 is a front view showing a fourth embodiment.

FIG. 8 is a partially cutaway front view showing a conventional example.

[Explanation of symbols]

 1 Handle part 2 Tip core 3 Flocking

Claims (1)

(57) [Claims] 1. A resin molded product (A) in which a handle portion (1) and a tip core (2) are integrally formed, a radially projecting flocking (3) is applied to the outer peripheral surface of the tip core (2). An interdental brush wherein the flocking (3) is formed by electrodeposition flocking.