JPH09238748A - Interdental brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interdental brush which allows the sure and easy adhesion of dentifrice to a brush without using separate members, such as dentifrice containers and caps. SOLUTION: A user lightly picks up a handle 3 and adheres a tooth polishing liquid to filaments 2b in the case of the constitution formed by forming a cell 3b communicating with an insertion hole 3a to be embedded with a wire 2a into the handle 3 and fitting the tooth polishing liquid into this cell 3b. The tooth polishing liquid in the cell may be adhered to the filaments 2b along the wire 2a by capillarity in the case of the constitution formed by inserting a capillary tube into the insertion hole 3b and embedding the wire 2a into this capillary tube.

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 provides a structure in which a handle is filled with liquid toothpaste.

[0002]

2. Description of the Related Art Generally, when cleaning an interdental brush with an interdental brush, a dentifrice is not used. Instead, a brush is simply inserted between the teeth and then brushed back and forth.

[0003]

However, when brushing without using a toothpaste, rough cleaning can be performed, but
You cannot remove even plaque and small dirt that sticks. Therefore, it is needless to say that it is preferable to always use a dentifrice even when using an interdental brush from the viewpoint of preventing tooth diseases such as alveolar pyorrhea. However, the brush in this interdental brush has a conical shape without a flat surface and is formed into a thin shape that can be inserted between the teeth, so unlike a normal toothbrush, a toothpaste is attached to its surface. It is difficult to get it done. Further, even if it is once attached, it may be easily removed before the brushing.

On the other hand, from the above viewpoint, the present inventor has applied for a technique in which a sponge or the like is loaded in a cap for protecting the brush and a water brush or the like is impregnated into the sponge or the like (Japanese Patent Application No. 2000-242242). No. 7-219838), the invention according to the application in which the cap and the interdental brush are separately configured and the present invention are fundamentally different in the means for solving the problems.

The present invention has been made in view of the above, and it is a novel interdental brush which can surely and easily adhere the dentifrice to the brush and can always perform cleaning with the dentifrice without preparing a separate member. The purpose is to provide.

[0006]

In order to achieve the above object, according to the present invention, a brush made by sandwiching a filament between wires and twisting the wire, and a synthetic resin formed with an insertion hole for burying the wire are formed. In the interdental brush composed of a handle, a means of forming a chamber communicating with the insertion hole in the handle and filling the chamber with liquid toothpaste was used. The above-mentioned insertion hole functions as a passage for the liquid toothpaste, but a passage completely different from this may be formed in the handle,
Specifically, it can be achieved by means of opening the passage near the tip of the handle while communicating the passage with the chamber. further,
Means of selectively inserting a capillary reaching the chamber into the insertion hole and then burying the wire of the brush in this capillary and fixing it to the handle is also used.

[0007]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing the internal structure of the interdental brush of the present invention.
Is roughly divided into a brush 2, a synthetic resin handle 3 and two members. Of these, the brush 2 is formed by sandwiching a filament 2b between half-bent wires 2a and twisting the handle 3 while An insertion hole 3a for burying and fixing the wire 2a and a chamber 3b communicating with the insertion hole 3a are formed therein, and the chamber 3b is filled with liquid toothpaste.
In addition, the filling method of the liquid toothpaste, for example, a filling hole (not shown) is provided at the rear end of the handle, and after filling the liquid toothpaste,
A plug (not shown) is inserted into the filling hole and sealed. Further, by providing a knob on the stopper so as to be removable, each user can appropriately fill the handle with the liquid toothpaste.

With the above structure, pressure is applied to the chamber 3b by pinching the middle portion of the handle 3 with a finger so that the handle 3 is slightly recessed.
The liquid toothpaste moves in the distal direction of the handle 3 using the insertion hole 3a as a passage, and further sew through the gap between the wires 2a to seep out into the filament 2b. By lightly picking up the handle 3 in this way, it is possible to constantly clean the spaces between the teeth by the liquid brush. Here, the handle 3 is made of synthetic resin, and the chamber 3b
Since the outer peripheral wall of is thin, it is easy to press with your finger. Further, since the insertion hole 3a has a small diameter, the liquid toothpaste will not inadvertently leak even if the interdental brush is inverted.

FIG. 2 shows another embodiment, in which the passage 4 for the liquid toothpaste is formed so as to open near the tip of the handle 3 while communicating with the chamber 3b. In this configuration, the handle 4 is lightly pinched at the middle portion of the handle 3 as in the above-described embodiment, so that the passage 4
Liquid toothpaste can be extracted from the outside of the chamber 3b,
The extracted liquid toothpaste travels along the tip of the handle 3, further travels along the wire 2a, and adheres to the filament 2b.

FIG. 3 shows still another embodiment, in which a capillary 5 having a length reaching the chamber 3b is inserted into the insertion hole 3a, and the wire 2a is buried in the capillary 5. In this embodiment, as in the above-described two embodiments, even when pressure is not applied to the middle portion of the handle 3 with a finger, the liquid level in the capillary 5 rises due to a capillary phenomenon when the interdental brush 1 is set up. By utilizing this phenomenon, the liquid brush in the chamber 3b is attached to the filament 2b. The capillarity occurs under atmospheric pressure. Therefore, in this embodiment, the handle 3 is provided with an equal pressure hole 6 communicating with the chamber 3b in order to avoid a negative pressure in the chamber 3b by the amount of the liquid toothpaste. Therefore, since the chamber 3b is always kept at the atmospheric pressure by the equal pressure hole 6 regardless of the reduction of the liquid brush,
As described above, the liquid toothpaste can be attached to the filament 2b by the capillary phenomenon. However,
Since the equal pressure holes 6 are formed to have an extremely small diameter, the liquid toothpaste does not leak out carelessly from here.

[0011]

As described above, according to the present invention, the chamber of the liquid toothpaste provided inside the handle is connected to the insertion hole of the wire, so that the liquid toothpaste can be removed by pressing the handle. It can be transmitted and attached to the filament. In this way, the adhesion of the dentifrice to the brush could be made simple and reliable. Further, it is convenient because there is no need to prepare a separate body such as a container containing the dentifrice. In addition, a structure was adopted in which a capillary tube was inserted into the wire insertion hole and the wire was buried in it, so when the handle was pressed, the liquid toothpaste in the chamber caused the capillary wire phenomenon to remove the wire without applying such force. It can be transferred and attached to the filament.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the internal structure of an interdental brush.

FIG. 2 is a vertical sectional view of an interdental brush showing another embodiment.

FIG. 3 is a vertical sectional view of an interdental brush showing still another embodiment.

[Explanation of symbols]

 1 Interdental Brush Whole 2 Brush 2a Wire 2b Filament 3 Handle 3a Insertion Hole 3b Chamber 4 Passage 5 Capillary 6 Isobaric Hole

Claims (3)

[Claims] 1. An interdental brush comprising a brush made by sandwiching a filament between wires and twisting the wire, and a synthetic resin handle having an insertion hole for burying the wire. An interdental brush characterized in that a chamber communicating with the insertion hole is formed, and the chamber is filled with a liquid toothpaste. 2. The interdental brush according to claim 1, further comprising a passage for the liquid toothpaste, which is opened in the vicinity of the tip of the handle so as to communicate with the chamber. 3. A capillary that reaches the chamber is inserted into an insertion hole,
The interdental brush according to claim 1, wherein a wire of the brush is buried in the capillary and fixed to the handle.