CN211485014U

CN211485014U - Oral hygiene article

Info

Publication number: CN211485014U
Application number: CN201922278169.4U
Authority: CN
Inventors: 柳慧珠
Original assignee: LG Household and Health Care Ltd
Current assignee: LG H&H Co Ltd
Priority date: 2019-01-21
Filing date: 2019-12-17
Publication date: 2020-09-15
Anticipated expiration: 2029-12-17
Also published as: KR20200090351A

Abstract

The utility model provides an oral hygiene articles for use, this oral hygiene articles for use can wash the oral cavity under the condition of not putting into the oral cavity with the hand, in above-mentioned oral hygiene articles for use, combine a plurality of dental floss boards with rotatable mode overlapping, adjust the angle of the dental floss of locating above-mentioned dental floss board with the rotation of above-mentioned dental floss board.

Description

Oral hygiene article

Technical Field

The utility model relates to an oral hygiene product for cleaning oral cavity by chewing or rolling.

Background

As oral hygiene products that contribute to healthy tooth management, there are interdental brushes, dental floss, tongue scrapers, and the like in addition to toothbrushes. Interdental brushes are used to remove food debris or tartar, etc. that are trapped between teeth. Dental floss, which is an oral hygiene product for removing food debris and tartar, etc., which are not completely removed by brushing, is used similarly to an interdental toothbrush, except that the gaps between teeth do not reach the level of using an interdental toothbrush. A tongue scraper is an oral hygiene product for removing a white coating from a tongue, which is one of causes of halitosis.

In order to remove food residue or tartar (interdental calculus) trapped between teeth, an interdental brush or floss is proposed. When the interdental space is narrow, it is difficult to use an interdental brush, and therefore, dental floss is preferred to an interdental brush. As the dental floss product, there are a product in which dental floss is wound and used in a certain length to the extent that the dental floss is cut to be used, and disposable dental floss that can be used one by one. The product for cutting the dental floss is to cut the dental floss by 40cm and roll it 1-3 times in the middle finger of both hands, and pull the dental floss elastically to insert the dental floss between the teeth and move it in a slow-pulling manner, thereby removing foreign materials between the teeth. In this way, in the case of a product in which the dental floss is cut off for use, the dental floss is rolled around a finger for use, and therefore, there is inconvenience in that wax, perfume, and the like of the dental floss may be stained on the hand. To solve such inconvenience, disposable flosses have been developed in which a floss is attached to a floss support.

However, in the case of disposable dental floss, there are inconveniences as follows: in order to extend the dental floss between teeth deep in the oral cavity, such as molars, it is necessary to extend a part of the fingers into the oral cavity, and saliva such as spit in the oral cavity is stained on the hand during this process. Further, since the dental floss is unpleasant to other people due to the phenomenon that foreign matter such as food in the oral cavity is caught and saliva flows out during use of the dental floss, it is inconvenient to use the dental floss in front of other people in public places.

Therefore, the utility model provides a more sanitary and free dental floss appliance which can be used in front of other people.

Documents of the prior art

Patent document

(patent document 1) Korean granted Utility model publication No. 20-0331536 (published 11 month and 01 day 2003)

SUMMERY OF THE UTILITY MODEL

Problems to be solved

In order to solve the above problems, the present invention provides an oral hygiene product in which a plurality of dental floss plates, each of which is formed by overlapping dental floss, are placed in the oral cavity and chewed or rolled to clean the interdental spaces.

Means for solving the problems

In order to achieve the above object, the present invention provides an oral hygiene article which can clean an oral cavity without putting a hand into the oral cavity, wherein a plurality of dental floss plates are combined in a rotatable manner in an overlapping manner, and the dental floss plates are rotated to adjust an angle of a dental floss provided on the dental floss plates.

In addition, a plurality of dental floss plates may be rotatably inserted on the same shaft.

When the overlapped dental floss plate is rotated about the axis, a rotation angle between an imaginary extension line of the dental floss provided at the dental floss plate located at the outermost contour and an imaginary extension line of the dental floss provided at the overlapped dental floss plate located inside the selected dental floss plate located at the outermost contour and overlapped with each other may be 60 to 120 degrees.

In addition, the dental floss plates overlapped and combined at the inner side of the dental floss plate positioned at the outermost contour may gradually decrease in size as approaching the center side of the dental floss plate positioned at the outermost contour.

In addition, the oral hygiene product may include: an outmost dental floss plate including a left dental floss bracket and a right dental floss bracket, and a shaft connecting the left dental floss bracket and the right dental floss bracket, wherein the left dental floss bracket and the right dental floss bracket are provided at both sides with a space therebetween, and dental floss is provided at both side ends; and a 1 st dental floss bracket including a 1 st dental floss bracket and a 2 nd dental floss bracket, the 1 st dental floss bracket and the 2 nd dental floss bracket being positioned inside the left dental floss bracket and the right dental floss bracket, being rotatably coupled to a shaft of the outermost dental floss plate in an overlapping manner, and having dental floss at both ends, the 1 st dental floss bracket being positioned at the left dental floss bracket side, and the 2 nd dental floss bracket being positioned at the right dental floss bracket side.

The oral hygiene product may further include a 2 nd dental plate, the 2 nd dental plate may include a 3 rd dental floss holder and a 4 th dental floss holder, the 3 rd dental floss holder and the 4 th dental floss holder may be positioned inside the 1 st dental floss holder and the 2 nd dental floss holder, may be rotatably coupled to a shaft of the outermost dental floss plate in an overlapping manner, and may include dental floss at both end portions, the 3 rd dental floss holder may be positioned on the 1 st dental floss holder side, and the 4 th dental floss holder may be positioned on the 2 nd dental floss holder side.

Further, the outer peripheral surface of the shaft coupled to the plurality of dental plate may be formed of a concave portion and a convex portion, the plurality of dental plate portions may be provided with coupling holes to which the shaft is coupled, and the coupling holes may include at least one engaging portion formed to protrude toward a center of the coupling holes so as to be engaged with the concave portion or the convex portion.

The shaft may have a concave portion and a convex portion on the entire outer peripheral surface or a part of the outer peripheral surface of both end portions of the shaft.

Effect of the utility model

The utility model can roll the dental floss plate with dental floss in the oral cavity to clean the interdental space without using hands.

In addition, the utility model does not put the hand into the oral cavity, so that the worry that the wax of the dental floss or the saliva of the oral cavity is stained on the hand is completely avoided.

Drawings

Fig. 1 is a perspective view of an oral hygiene article according to embodiment 1 of the present invention.

Fig. 2 is an isolated perspective view of an oral hygiene article according to embodiment 1 of the present invention.

Fig. 3 is a perspective view showing a rotation state of the 1 st dental plate according to the 1 st embodiment of the present invention.

Fig. 4 is a side view showing a rotation state of the 1 st dental plate according to the 1 st embodiment of the present invention.

Fig. 5 is a perspective view of an oral hygiene article according to embodiment 2 of the present invention.

Fig. 6 is an isolated perspective view of an oral hygiene article according to embodiment 2 of the present invention.

Fig. 7 is a perspective view showing a rotation state of the 1 st dental plate and the 2 nd dental plate according to the 2 nd embodiment of the present invention.

Fig. 8 is a side view showing a rotation state of the 1 st dental plate and the 2 nd dental plate according to the 2 nd embodiment of the present invention.

Fig. 9 is a separated perspective view showing a coupling structure of a shaft and a plurality of dental plate according to embodiment 3 of the present invention.

Fig. 10 is a perspective view showing a coupling structure of a shaft and a plurality of dental plate according to embodiment 3 of the present invention.

Fig. 11 is a side view showing a coupling structure of a shaft and a plurality of dental plate according to embodiment 3 of the present invention.

Fig. 12 is a side view showing a rotation state of the 1 st dental plate according to the 3 rd embodiment of the present invention.

Fig. 13 is a side view showing a rotation state of the 1 st dental plate and the 2 nd dental plate according to the 3 rd embodiment of the present invention.

(symbol description)

10: oral hygiene article

100: outmost dental floss plate

101: left dental floss bracket

102: right dental floss bracket

103: shaft

110: no. 1 dental floss plate

111: no. 1 dental floss bracket

112: no. 2 dental floss bracket

120: no. 2 dental floss plate

123: no. 3 dental floss bracket

124: no. 4 dental floss bracket

130: dental floss

200: combination structure

201: concave part

202: convex part

203: combining hole

203 a: clamping and hanging part

θ: angle of rotation

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, when reference numerals are given to components in the respective drawings, the same reference numerals are used as much as possible for the same components even when they are shown in different drawings. In addition, although the preferred embodiments of the present invention are described below, the technical idea of the present invention is not limited thereto, and can be modified by those skilled in the art to be variously implemented.

The utility model provides an oral hygiene article which can sanitarily manage the oral cavity by rolling the dental floss plate with a three-dimensional polygonal shape in the oral cavity to clean the interdental space of the dental floss arranged on the dental floss plate under the condition that the hand is not put into the oral cavity.

First, the structure of an oral hygiene article according to embodiment 1 of the present invention will be described.

Fig. 1 is a perspective view of an oral hygiene product according to embodiment 1 of the present invention, fig. 2 is a separate perspective view of the oral hygiene product according to embodiment 1 of the present invention, fig. 3 is a perspective view showing a rotation state of the dental plate 1 according to embodiment 1 of the present invention, and fig. 4 is a side view showing a rotation state of the dental plate 1 according to embodiment 1 of the present invention.

The oral hygiene product 10 according to embodiment 1 of the present invention includes an outermost dental plate 100 formed in a polygonal shape and a 1 st plate 110 rotatably provided inside the outermost dental plate 100.

The outermost dental plate 100 may be formed in a shape of "H". The outermost dental floss plate 100 includes a left floss holder 101 and a right floss holder 102 provided on both sides with a space therebetween. The floss 130 is provided in a tensed state at both side ends of the left and

right floss holders

101 and 102. For example, the outermost dental plate 100 and the 1 st plate 110 are injection molded products. Although not shown, grooves for firmly fixing the strings of dental floss 130 may be provided at both side ends of the left and

right floss holders

101 and 102.

A shaft 103 for connecting the left and

right floss holders

101, 102 is provided substantially at the center of the left and

right floss holders

101, 102. A 1 st dental floss plate 110 having a size smaller than that of the outermost dental floss plate 100 is rotatably overlapped and inserted on the shaft 103.

The 1 st dental plate 110 is identical to the outermost dental plate 100, compared to the outermost dental plate 100, except that there is no axis 103 and it is smaller in size than the outermost dental plate 100.

The 1 st dental floss plate 110 is overlappingly coupled to the inner sides of the left and

right floss brackets

101 and 102 of the outermost dental floss plate 100. The 1 st dental plate 110 is rotatably inserted into the shaft 103 of the outermost dental plate 100.

The 1 st dental floss plate 110 includes a 1 st dental floss holder 111 and a 2 nd dental floss holder 112. The 1 st plate 110 has a polygonal shape in its entire outer shape. For example, the 1 st plate 110 is

Such a configuration. The 1 st floss holder 111 and the 2 nd floss holder 112 are provided with flosses 130 at both side ends thereof. The dental floss 130 provided at both side ends of the 1 st dental floss holder 111 and the 2 nd dental floss holder 112 is configured to be tensed to the left and right.

The 1 st floss holder 111 is obliquely disposed to the left floss holder 101 side of the outermost dental floss plate 100. The 1 st floss carrier 111 is formed to be smaller in size than the left floss carrier 101 of the outermost contour floss plate 100. The 1 st floss holder 111 is rotatably inserted into the shaft 103 of the outermost dental floss plate 100.

The 2 nd floss carrier 112, which is located at the opposite side of the 1 st floss carrier 111, is obliquely disposed toward the right floss carrier 102 side of the outermost dental floss plate 100. The 2 nd floss carrier 112 is formed to be smaller in size than the right floss carrier 102 of the outermost profile floss plate 100. The 2 nd floss holder 112 is rotatably inserted into the shaft 103 of the outermost dental floss plate 100.

When the 1 st dental floss plate 110 is rotated about the shaft 103, a rotation angle θ formed by an imaginary extension line of the dental floss 130 provided on the outermost dental floss plate 100 and an imaginary extension line of the dental floss 130 provided on the 1 st dental floss plate 110 may be 60 degrees to 120 degrees.

Next, the interdental cleaning process of the oral hygiene product according to embodiment 1 of the present invention will be described.

As shown in fig. 1, the first embodiment of the present invention can be reduced in size by flatly unfolding the outermost dental plate 100 and the 1 st dental plate 110, thereby being very convenient to store and carry.

As shown in fig. 3, when the oral hygiene product according to embodiment 1 of the present invention is put into the oral cavity and rolled in the oral cavity, the 1 st dental plate 110 rotates around the shaft 103 of the outermost dental plate 100 and is deformed into a form suitable for cleaning between teeth.

The dental hygiene product according to embodiment 1 of the present invention is rolled in the oral cavity, and the dental floss 130 of the 1 st dental plate 110 can be used to clean the interdental space.

The embodiment 1 of the present invention can remove foreign matter such as food between teeth, and can naturally contact with the tongue during chewing or rolling in the oral cavity, thereby performing the function of a tongue scraper. That is, the 1 st dental plate 110 rotates to contact the surface of the tongue, thereby removing the coated tongue (coated tongue) on the surface of the tongue and sanitarily managing the oral cavity.

Next, the structure of an oral hygiene product according to embodiment 2 of the present invention will be described.

Fig. 5 is a perspective view of an oral hygiene product according to embodiment 2 of the present invention, fig. 6 is a separate perspective view of the oral hygiene product according to embodiment 2 of the present invention, fig. 7 is a perspective view showing a rotation state of the 1 st dental plate and the 2 nd dental plate according to embodiment 2 of the present invention, and fig. 8 is a side view showing a rotation state of the 1 st dental plate and the 2 nd dental plate according to embodiment 2 of the present invention.

The oral hygiene article 10 of embodiment 2 of the present invention further comprises a 2 nd dental floss plate 120. Embodiment 2 is the same as embodiment 1 except for the dental plate 2 120.

Specifically, the oral hygiene product 10 according to embodiment 2 of the present invention includes an outermost dental floss plate 100 formed in a polygonal shape, a 1 st plate 110 rotatably provided inside the outermost dental floss plate 100 in an overlapping manner, and a 2 nd plate 120 rotatably provided inside the 1 st plate 110 in an overlapping manner.

The overall outer shape of the 2 nd plate 120 is a polygonal shape. For example, the 2 nd plate 120 is formed

Such a configuration. The 2 nd dental floss plate 120 includes a 3 rd dental floss holder 123 and a 4 th dental floss holder 124 provided at both sides with a space therebetween. Dental floss 130 is provided in a tensed state at both side ends of the 3 rd and 4

th floss holders

123 and 124. Although not shown, grooves for fastening the dental floss 130 are provided at both side ends of the 3 rd and 4

th floss holders

123 and 124. For example, the 3 rd and 4

th floss holders

123 and 124 are injection molded products.

The 2 nd plate 120 is rotatably inserted in the same axis as the axis in which the 1 st dental plate 110 is provided, i.e., the axis 103 of the outermost contour dental plate 100. The 2 nd plate 120 is overlapped and combined with the 1 st plate 110 as a dental floss plate having a size smaller than that of the 1 st plate 110.

The 3 rd floss holder 123 is obliquely provided to the 1 st floss holder 111 side of the 1 st floss plate 110. The 3 rd floss holder 123 is formed to be smaller in size than the 1 st floss holder 111 of the 1 st floss plate 110. The 3 rd floss bracket 123 is rotatably inserted into the shaft 103 of the outermost dental floss plate 100.

The 4 th floss holder 124, which is located on the opposite side of the 3 rd floss holder 123, is inclined toward the 2 nd floss holder 112 side of the 1 st floss plate 110. The 4 th floss holder 124 is formed as a 2 nd floss holder 112 having a size smaller than the 1 st floss holder 110. The 4 th floss holder 124 is rotatably inserted on the shaft 103 of the outermost dental floss plate 100.

When the 2 nd dental floss plate 120 is rotated about the shaft 103, a rotation angle θ formed by an imaginary extension line of the dental floss 130 provided on the outermost dental floss plate 100 and an imaginary extension line of the dental floss 130 provided on the 2 nd dental floss plate 120 may be 60 degrees to 120 degrees.

In this way, in embodiment 2 of the present invention, a plurality of the 1 st dental plate 110 and the 2 nd dental plate 120 are rotatably inserted in an overlapping manner inside the outermost dental plate 100. For example, in addition to the 1 st dental plate 110 and the 2 nd dental plate 120, dental plates are additionally stacked and coupled to the inside of the outermost dental plate 100. At this time, the dental floss plate gradually decreases in size as it approaches the center of the outermost dental floss plate 100, and is inserted into the shaft 103 of the coaxial outermost dental floss plate 100 so as to be rotatable at a certain angle.

Next, the interdental cleaning process of the oral hygiene product according to embodiment 2 of the present invention will be described.

As shown in fig. 5 and 6, according to embodiment 2 of the present invention, the outermost dental plate 100, the 1 st dental plate 110, and the 2 nd dental plate 120 are smoothly spread, so that the size can be reduced, and the dental plate is very convenient to store and carry.

As shown in fig. 7 and 8, when the oral hygiene product according to embodiment 2 of the present invention is put into the oral cavity and rolled in the oral cavity, the 1 st dental plate 110 and the 2 nd dental plate 120 rotate about the shaft 103 of the outermost dental plate 100 and are deformed into a form suitable for cleaning between teeth.

The oral hygiene product of embodiment 2 of the present invention can be rolled in the oral cavity, and the teeth are cleaned by the dental floss 130 of the outermost dental floss plate 100 and the dental flosses 130 of the 1 st dental floss plate 110 and the 2 nd dental floss plate 120.

The embodiment 2 of the present invention not only removes foreign materials such as foods between teeth, but also naturally contacts the tongue during chewing or rolling in the oral cavity, thereby performing the function of a tongue scraper. That is, the 1 st dental plate and the 2 nd dental plate rotate to contact the surface of the tongue, thereby removing the tongue coating on the surface of the tongue and hygienically managing the oral cavity.

In embodiment 2 of the present invention, compared to embodiment 1, the 2 nd dental plate 120 is further provided, whereby the cleaning effect between teeth can be improved.

Next, an oral hygiene product according to embodiment 3 of the present invention will be described.

Fig. 9 is a separated perspective view showing a coupling structure of a shaft and a plurality of dental plates according to embodiment 3 of the present invention, fig. 10 is a perspective view showing a coupling structure of a shaft and a plurality of dental plates according to embodiment 3 of the present invention, and fig. 11 is a side view showing a coupling structure of a shaft and a plurality of dental plates according to embodiment 3 of the present invention.

The coupling structure 200 of the plurality of dental floss plates and the shaft 103 is formed as a coupling structure that enables the plurality of dental floss plates to maintain a form of different angles from each other. The plurality of dental plates may be an outermost dental plate 100, a 1 st dental plate 110, a 2 nd dental plate 120. In fig. 9 to 11, only the outermost dental tape sheet 100 is shown for convenience of explanation.

Specifically, the outer peripheral surface portion of the shaft 103 coupled to the dental floss plate is constituted by a concave portion 201 and a convex portion 202. The entire outer peripheral surface of the shaft 103 or a part of the outer peripheral surface of both side end portions of the shaft 103 is constituted by a concave portion 201 and a convex portion 202.

The dental plate portion into which the shaft 103 is inserted and coupled is provided with a coupling hole 203. The coupling hole 203 is further provided with at least one engaging portion 203 a. The engaging portion 203a is formed to protrude toward the center of the coupling hole 203, and is engaged with the concave portion 201 or the convex portion 202. For example, the engaging portion 203a, the concave portion 201, and the convex portion 202 have curved outer shapes.

When the outermost dental plate 100 and the 1 st dental plate 110 are rotated to form different angles with the coupling holes 203 of the outermost dental plate 100 and the 1 st dental plate 110 coupled to the shaft 103, the engaging portions 203a of the coupling holes 203 are engaged with the concave portions 201 or the convex portions 202 to restrict the rotation of the outermost dental plate 100 and the 1 st dental plate 110. When the outermost dental plate 100 and the 1 st dental plate 110 are rotated in different directions from each other, the hooking portions 203a of the coupling holes 203 provided in the outermost dental plate 100 and the 1 st

dental plates

110 and 120 are also twisted to form different angles from each other.

Thus, the outermost dental plate 100 and the 1 st dental plate 110 can be maintained in different forms at different angles without collapsing.

When the outermost dental plate 100, the 1 st dental plate 110 and the 2 nd dental plate 120 are rotated to form different angles with the coupling holes 203 of the outermost dental plate 100, the 1 st dental plate 110 and the 2 nd dental plate 120 coupled to the shaft 103, the engaging portions 203a of the coupling holes 203 are engaged with the recesses 201 or the protrusions 202, and the rotation of the outermost dental plate 100, the 1 st dental plate 110 and the 2 nd dental plate 120 is restricted. When the outermost dental plate 100, the 1 st dental plate 110 and the 2 nd dental plate 120 are rotated in different directions from each other, the engaging portions 203a of the coupling holes 203 of the outermost dental plate 100, the 1 st dental plate 110 and the 2 nd dental plate 120 are also twisted to form different angles from each other.

Thus, the configuration of the outermost dental plate 100, the 1 st dental plate 110, and the 2 nd dental plate 120 can be maintained as they are without collapsing.

As described above, the present invention can remove foreign substances such as food between teeth, and can remove the tongue coating because the tongue coating naturally contacts with the tongue during chewing or rolling in the oral cavity.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the scope of the essential characteristics of the present invention. Therefore, the embodiments and drawings disclosed in the present invention do not limit the technical idea of the present invention, but explain the present invention, and the scope of the technical idea of the present invention is not limited to such embodiments and drawings. The scope of the invention is to be construed in accordance with the accompanying claims, and all technical ideas within the same scope are intended to be included in the scope of the invention.

Claims

1. An oral hygiene article which enables cleaning of the oral cavity without putting hands into the oral cavity, characterized in that,

in the oral hygiene product, a plurality of dental floss plates are rotatably overlapped and combined, and the dental floss plates are rotated to adjust the angle of dental floss arranged on the dental floss plates.

2. The oral hygiene article of claim 1, characterized in that,

the dental floss plates are rotatably inserted on the same shaft.

3. The oral hygiene article of claim 2, characterized in that,

when the overlapped dental floss plate is rotated around the shaft, the rotation angle formed by the virtual extended line of the dental floss arranged at the dental floss plate positioned at the outermost contour and the virtual extended line of the dental floss arranged at the overlapped dental floss plate positioned at the inner part of the selected dental floss plate positioned at the outermost contour and overlapped and combined is 60-120 degrees.

4. The oral hygiene article of claim 1, characterized in that,

the dental floss plate overlapped and combined at the inner side of the dental floss plate positioned at the outermost contour gradually reduces in size with approaching to the center side of the dental floss plate positioned at the outermost contour.

5. The oral hygiene article of claim 1, characterized in that,

the oral hygiene product comprises:

an outmost dental floss plate including a left dental floss bracket and a right dental floss bracket, and a shaft connecting the left dental floss bracket and the right dental floss bracket, wherein the left dental floss bracket and the right dental floss bracket are provided at both sides with a space therebetween, and dental floss is provided at both side ends; and

and a 1 st dental floss bracket including a 1 st dental floss bracket and a 2 nd dental floss bracket, the 1 st dental floss bracket and the 2 nd dental floss bracket being positioned inside the left dental floss bracket and the right dental floss bracket, being rotatably coupled to a shaft of the outermost dental floss plate in an overlapping manner, and having dental floss at both ends, the 1 st dental floss bracket being positioned at the left dental floss bracket side, and the 2 nd dental floss bracket being positioned at the right dental floss bracket side.

6. The oral hygiene article of claim 5, wherein,

the oral hygiene product further includes a 2 nd dental floss plate, the 2 nd dental floss plate includes a 3 rd dental floss holder and a 4 th dental floss holder, the 3 rd dental floss holder and the 4 th dental floss holder are positioned inside the 1 st dental floss holder and the 2 nd dental floss holder and rotatably overlapped with each other and coupled to a shaft of the outermost dental floss plate, and dental floss is provided at both side ends, the 3 rd dental floss holder is positioned at the 1 st dental floss holder side, and the 4 th dental floss holder is positioned at the 2 nd dental floss holder side.

7. The oral hygiene article of claim 2, characterized in that,

the outer peripheral surface of the shaft connected with the dental floss plates is composed of a concave part and a convex part, a connecting hole for connecting the shaft is arranged at the position of the dental floss plates, at least one clamping and hanging part is arranged at the connecting hole, and the clamping and hanging part is convexly formed towards the center of the connecting hole and is clamped and hung on the concave part or the convex part.

8. The oral hygiene article of claim 7, wherein,

the shaft has a recessed portion and a protruding portion on the entire outer peripheral surface or on a part of the outer peripheral surface of both end portions of the shaft.