WO2006022485A1

WO2006022485A1 - Interdental brush

Info

Publication number: WO2006022485A1
Application number: PCT/KR2005/002547
Authority: WO
Inventors: Byoung-Wha Joung
Original assignee: Byoung-Wha Joung
Priority date: 2004-08-26
Filing date: 2005-08-04
Publication date: 2006-03-02
Also published as: KR200373706Y1

Abstract

Disclosed herein is a toothbrush, which has an interdental brush that is removably coupled to a toothbrush handle, thus solving conventional problems in that an interdental brush must be separately stored after being used, and is thus unsanitary. In the present invention, the interdental brush (5) is inserted into and stored in a cylindrical casing, which has a length of 1/3 of the overall length of the toothbrush. Threaded parts are provided on opposite ends of the cylindrical casings, so that a toothbrush main body (1), the cylindrical casing and the interdental brush (5) are removably coupled to each other. Furthermore, the interdental brush (5) is easily replaceable with a new one. As well, a cross hole (10) is formed through a sidewall of the cylindrical casing to ensure superior ventilation, thus preventing the interdental brush (5) from becoming humid, thereby being sanitary.

Description

Description INTERDENTAL BRUSH

Technical Field

[1] The present invention relates to a toothbrush, having an interdental brush which is inserted into a toothbrush handle and is used for removing food remnants trapped between teeth after brushing the teeth, thus helping a user maintain his/her teeth. In conventional interdental brushes, there are disadvantages in that the entire length is relatively short, maintenance is difficult, and it is unsanitary. Furthermore, losing the interdental brush is common.

[2]

Disclosure of Invention Technical Problem

[3] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a toothbrush having an interdental brush, which is easily removably inserted into a toothbrush body and thus is able to be used just after brushing teeth and, as well, can be stored in the toothbrush body after being used, thus preventing the interdental brush from being lost, and being sanitary, and also which is replaceable, thus saving resources.

[4]

Technical Solution

[5] In order to accomplish the above object, the present invention provides a toothbrush which has an interdental brush such that a user can keep his/her teeth healthy, and in which a cylindrical casing serving as a toothbrush handle and having a length of 1/3 of the overall length of the toothbrush is removably coupled to a toothbrush main body, and the interdental brush is removably inserted into the cylindrical casing.

[6] The interdental brush has a threaded part on an end thereof such that it can be replaced with a new one in the same manner as that of the conventional art. Furthermore, the interdental brush is removably coupled to an interdental brush handle by threaded engagement, so that, after a user has brushed his/her teeth, the interdental brush coupled to the interdental brush handle is removed from the toothbrush main body by holding and rotating the interdental brush handle and then used, and, after use of the interdental brush has been completed, the interdental brush can be inserted into and stored in the cylindrical casing.

[7] As well, in the present invention, a cross hole is formed through a sidewall of the cylindrical casing, thus preventing the interdental brush from becoming humid or con¬ taminated. [8]

Advantageous Effects

[9] As described above, in the present invention, an interdental brush is combined with a toothbrush, unlike the conventional art in which the two articles are separately used, thus preventing it from becoming lost, and allowing it to be sanitarily stored.

Furthermore, the present invention lets even those people who do not know the purpose and usage of the interdental brush to discover various effects of the interdental brush. Therefore, the present invention helps people of all ages and both sexes maintain their teeth efficiently. [10]

Brief Description of the Drawings [11] FIG. 1 is an exploded perspective view of a toothbrush having an interdental brush, according to an embodiment of the present invention; and [12] FIG. 2 is a view showing an assembled toothbrush having the interdental brush according to the present invention. [13] *Description of the elements in the drawing*

[14] 1: toothbrush main body 2: threaded coupling part

[15] 3: internally threaded part of cylindrical casing

[16] 4: externally threaded part of cylindrical casing

[17] 5: interdental brush 6: externally threaded part of interdental brush

[18] 7 : internally threaded part of interdental brush handle

[19] 8: interdental brush handle

[20] 9: junction part between interdental brush handle and part on which internally threaded part is formed

[21] 10: cross hole formed through sidewall of cylindrical casing

[22] 11 : additional interdental brushes

[23]

Best Mode for Carrying Out the Invention [24] Hereinafter, a toothbrush having an interdental brush according to an embodiment of the present invention will be described in detail with reference to the attached drawings. [25] FIG. 1 is an exploded perspective view of the toothbrush having the interdental brush of the present invention. [26] FIG. 2 is a view showing the assembled toothbrush having the interdental brush of the present invention. [27] The toothbrush of the present invention includes a toothbrush main body 1 which has a length of 2/3 of the overall length of the toothbrush and has an externally threaded part on an end thereof, and a cylindrical casing which has an internally threaded part on an end thereof. Therefore, they are easily removably coupled to each other and, thus, allow easy clean-up.

[28] When an external threaded part 4 of the cylindrical casing engages with a junction part 10 between an interdental brush handle and a part on which an internally threaded part of the interdental brush is formed, the interdental brush 5 is stored in the cylindrical casing.

[29] Furthermore, because an externally threaded part 6 provided on an end of the in¬ terdental brush removably engages with an internally threaded part 7 formed on the in¬ terdental brush handle, the interdental brush is easily replaced with a new one.

[30] As well, the interdental brush handle 8 coupled to the interdental brush allows a user to holds it and use the interdental brush. In addition, the interdental brush handle 8 serves as a lid of the cylindrical case.

[31] A cross hole 10 is formed through a sidewall of the cylindrical casing to ensure superior ventilation, thus preventing the interdental brush from becoming humid, thereby being sanitary.

Claims

[1] A toothbrush having an interdental brush, comprising: a toothbrush main body having a length of 2/3 of an overall length of the toothbrush and allowing a user to brush his/her teeth, with a threaded coupling part provided on an end of the toothbrush main body; a cylindrical casing having a length of 1/3 of the overall length of the toothbrush and removably coupled at a first end thereof to the threaded coupling part of the toothbrush main body, with a threaded part provided on a second end of the cylindrical casing such that an interdental brush is stored in the cylindrical casing; an interdental brush unit removably coupled to the cylindrical casing such that the interdental brush is inserted into and stored in the cylindrical casing, the in¬ terdental brush unit comprising: the interdental brush, having a threaded part on an end thereof; and a cylindrical interdental brush handle, having a threaded part on an end thereof, so that the threaded part of the interdental brush removably engages with the threaded part of the cylindrical interdental brush handle; a cross hole formed through a sidewall of the cylindrical casing to prevent the in¬ terdental brush from becoming humid or contaminated; and an additional interdental brush to replace the existing interdental brush, wherein the cylindrical casing, in which the interdental brush is stored, is removably coupled to the toothbrush main body using the threaded parts thereof so that the interdental brush is combined with and protected inside the toothbrush.

[2] The toothbrush having the interdental brush according to claim 1, wherein the toothbrush main body and the cylindrical casing are removably coupled to each other using the threaded parts thereof, and the interdental brush unit is separable into the interdental brush and the handle using threaded engagement so that the existing interdental brush is replaced with the additional interdental brush.