JP2545239Y2 - toothbrush - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a toothbrush, and more particularly, to a toothbrush in which a bristle provided with a bristle at the time of brushing teeth can easily enter a back tooth.

[Problems to be solved by conventional technology and device]

2. Description of the Related Art Conventionally, a toothbrush in which a grip portion and a flocking portion provided with a bristle are formed on the same straight line, a toothbrush in which the flocking portion is inclined with respect to the grip portion, and the like are known.

However, with a toothbrush in which the flocked portion and the grip portion are formed on the same straight line, when the cheek side and the lingual side of the back teeth are polished, the insertion may be hindered by the cheek, the front teeth, the tongue, and the like. For this reason,
In particular, for those who are not used to brushing, there is a risk that the back teeth will be left unpolished.

In addition, even with a toothbrush in which the flocking portion is inclined with respect to the grip portion,
Although slightly easier to insert, there was a risk of being hindered by cheeks when brushing the back teeth.

Therefore, an object of the present invention is to provide a toothbrush which does not have a risk that insertion into the oral cavity is obstructed by cheeks or the like even when brushing the back teeth, and which does not leave unpolished teeth.

[Means for solving the problem]

In the present invention, a neck portion and a flocked portion provided with a bristle,
In the toothbrush inclined to the side provided with the bristles with respect to the grip portion, by providing the toothbrush, wherein the flocked portion is further inclined to the neck portion on the side provided with the bristles, The above object has been achieved.

[Action]

ADVANTAGE OF THE INVENTION According to the toothbrush of this invention, when brushing a back tooth, a flocking part can be inserted in the back of an oral cavity, without being obstructed by a cheek.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

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

In the toothbrush of this embodiment, a flocked portion 2 having a bristle 3 is provided integrally with a grip portion 1 via a neck portion 4.

The bristle 3 is bent by bending the flocked portion 2 with respect to the neck portion 4 toward the side where the bristle 3 is provided, and by bending or bending the neck portion 4 with respect to the grip portion 1.
It is inclined to the side where is provided.

Here, the length of the flocked portion 2 is preferably set in a range of 10 mm to 25 mm, and more preferably in a range of 10 mm to 25 mm, 12 mm to 22 mm. When the length of the flocked portion 2 is less than 10 mm, the flocked area becomes small, and the brushing effect may be deteriorated.
If it exceeds mm, the lingual side of the molar teeth may be difficult to polish.

The inclination angle θ ₁ of the flocked portion 2 with respect to the neck portion 4 is 5
It is preferable to set the angle within the range of 15 ° to 15 °.
It is more preferable to set the angle within the range of 6 ° to 10 ° even within the range of 15 ° to 15 °. When the inclination angle theta ₁ is less than 5 °, there is a risk that inserted by the cheek is prevented when brushing molar teeth, also when more than 15 ° is because it may become difficult to perform brushing.

The inclination angle (total inclination angle including the inclination angle θ ₁ ) θ ₂ of the flocking portion 2 with respect to the grip portion 1 is 7 °.
It is preferable to set the angle within the range of 30 ° to 7 °.
It is more preferable to set the angle within the range of 30 ° to 10 ° to 20 °. When the inclination angle theta ₂ is less than 7 °, the low removal rate of posterior teeth plaque, there is a risk that particularly difficult to perform brushing in molar teeth, also the inclination angle theta ₂
Even when the angle exceeds 30 °, the removal ratio of plaque on the back teeth is similarly low, and brushing especially on the back teeth may be difficult.

The material constituting the grip portion 1 and the flocking portion 2 is not particularly limited, and may be any material that is usually used for a toothbrush. For example, AS (acrylonitrile / styrene resin), ABS (acrylonitrile / butadiene / styrene resin) ), PP (polypropylene resin), PC (polycarbonate resin), PBT (polybutylene terephthalate resin), propionate, thermoplastic elastomer and the like.

It should be noted that the tip of the bristle 3 may be formed in a spherical shape.

According to the toothbrush of the present embodiment configured as described above, even if the person is not brushed, the flocked portion 2 can be easily inserted into the back of the oral cavity without being hindered by the cheeks or the like. And the lingual side can be brushed sufficiently.

Therefore, plaque can be removed without the possibility of the back teeth being left unpolished.

The following Table 1 is the angle of inclination _{θ 1, 5 °, 10 °} ,
Set 15 °, also the inclination angle _{θ 2, 10 °, 20 °} ,
Questionnaire data on the ease of use of the toothbrush of the first embodiment set at 30 ° is shown, and Table 2 shows the results of the artificial plaque removal rate at the same inclination angle.

For comparison, a conventional toothbrush in which a flocked portion and a neck portion were formed straight so as to be located on the same straight line, and the flocked portion and the neck portion were inclined at 10 °, 20 °, and 30 ° with respect to a grip portion. Table 1 and Table 2 respectively show the questionnaire data and the results of the artificial plaque removal rate.

As is apparent from Tables 1 and 2, in the case of a conventional toothbrush in which the flocked portion and the neck portion are formed straight so as to be located on the same straight line, and the flocked portion and the neck portion are inclined with respect to the grip portion. When brushing the back teeth, the implanted portion was obstructed by the cheeks and the like, making it difficult to perform the brushing.

On the other hand, when the flocked portion 2 was also inclined with respect to the neck portion 4 as in the present embodiment, the artificial plaque removal rate was increased, brushing was easily performed, and operability was improved.

FIG. 2 is a side view showing a second embodiment of the toothbrush of the present invention. The same parts as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

The toothbrush shown in the second embodiment has a grip portion 1 of a neck portion 4.
The approaching portion 4a is once bent downward with respect to the center axis l of the gripper 1 and then tilted so as to be located above the center axis l.

In this way, in addition to the same effect as the first embodiment can be obtained, even when the inclination angle theta ₂ near 30 °, the height of the grip portion 1 to the tip of the bristle portion 2 But,
There is no risk of becoming too high.

(Other Embodiments) As shown in the first and second embodiments, the toothbrush of the present invention is not limited to the one in which the flocking portion 2 is provided integrally with the grip portion 1.

For example, as shown in FIG. 3, the present invention is applied to an electric toothbrush in which a driving source such as a battery 5 and a motor 6 is incorporated in a gripping portion 1 in which a neck portion 4 and a flocked portion 2 are detachably attached to the gripping portion 1. can do. In FIG. 3, reference numeral 7 denotes a vibrator for applying vibration to the flocked portion 2 and connecting the grip portion 1 and the neck portion 4, and reference numeral 4 b denotes a concave portion provided on an end face of the neck portion 4. Are removably engaged.

Further, the present invention can be applied to a toothbrush of a type in which the flocked portion 2 and the neck portion 4 are foldably connected to the grip portion 1 via pins.

[Effect of the invention]

In the toothbrush of the present invention, even when brushing the back teeth, there is no possibility that the insertion into the oral cavity is obstructed by the cheeks or the like, and no unbrushed residue occurs.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the toothbrush of the present invention,
FIG. 2 is a side view showing a second embodiment of the toothbrush of the present invention,
FIG. 3 is a side view of a disassembled state showing another embodiment. 1; grip portion, 2; flocking portion 3; bristle, 4; neck portion θ ₁ ; tilt angle of the flocking portion with respect to the neck portion θ ₂ ; tilt angle of the flocking portion with respect to the grip portion

Claims (2)

(57) [Scope of request for utility model registration] 1. A neck portion and a flocked portion provided with a bristle,
A toothbrush inclined with respect to a grip portion on a side where the bristles are provided, wherein the flocked portion is further inclined with respect to the neck portion on a side where the bristles are further provided. 2. The length of the flocked portion is set in a range of 10 mm to 25 mm, and the angle of inclination of the flocked portion with respect to the neck is
The toothbrush according to claim 1, wherein the toothbrush is set in a range of 5 ° to 15 °, and an inclination angle of the flocked portion with respect to the grip is set in a range of 7 ° to 30 °.