JP2544951Y2 - toothbrush - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush, and more particularly, to a toothbrush which does not make the bristles too hard and can sufficiently brush the last molars.

[0002]

2. Description of the Related Art In a conventional toothbrush, since the bristle has a substantially uniform bristle length, it is difficult to reach deep inside the oral cavity, and it is difficult to sufficiently brush the last molar. Therefore, a toothbrush has been proposed in which the bristle planted at the tip of the flocking table is shorter in length than the bristle planted at the handle side (Japanese Utility Model Laid-Open No. 51-67173, Japanese Utility Model Application Publication No. See, for example, JP-A-56-171728.

[0003]

[Problems to be Solved by the Invention] However, the above-mentioned toothbrush only has the bristle length of the bristle planted at the tip of the bristle carrier being short, so that depending on the brushing method, it does not reach the last molars sufficiently, and is polished. The bristle may be left behind, and if the bristle length is shortened so as to reach the last molar, the bristle may be too hard.

Accordingly, an object of the present invention is to provide a toothbrush in which bristles implanted at the leading end of a flocking table do not become too hard, and can be brushed sufficiently without reaching the last molar and leaving unpolished. It is in.

[0005]

According to the present invention, a grip is provided on a grip.
The flocking table with wristle is integrally connected via the neck
The flocking table with the gripper,
For toothbrushes bent or curved to the through side,
The flocked table was provided with the bristle for the neck.
Side, and the length of the flocking table is 10 mm to 25 mm.
mm, and the flocking to the gripper
Set the bending or bending angle of the table within the range of 7 ° to 30 °.
The bending angle of the flocking table with respect to the neck,
The angle is set in the range of 5 ° to 15 °, and
The top part of the step and the other part of one or two steps
A bristle formed in a two-stage or three-stage shape at the upper position, and having the bristle planted at the leading end of the flocked bed at the other end thereof. And the average bristle tip position of each of the bristle bundles in the tip portion of the flocking table and the other portion is aligned on substantially the same plane, and the length of the bristle in each bristle bundle in the tip portion is up and the difference between the shortest and the range of 0.8Mm～4mm, the uneven lengths of the bristles in each bristle bundles within said range, further of flocking first portion of the bristles stand
Average bristle bristle length and other areas of the flock
The difference from the average bristle length of the
And the average bristle length of the tip is 10 mm
The above object is achieved by providing a toothbrush characterized by the following .

[0006]

According to the toothbrush of the present invention, at the time of brushing, the tip of any bristle in each bristle bundle at the tip of the flocking table comes into contact with the last molar.

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

As shown in FIG. 1, the toothbrush of the present embodiment is configured such that the bristle 5 a implanted in the tip portion 2 of the flocking table 1 has a bristle 5 a having a different height from the other portion 3 (the portion on the handle 4 side) of the flocking table 1. In the following, the bristle 6a implanted in the rear portion 3 is shorter than the bristle length, and the average bristle tip positions of the bristle bundles 5 and 6 in the front portion 2 and the rear portion 3 of the flocking table 1 are substantially the same. The difference between the longest and shortest lengths of the bristles 5a in each bristle bundle 5 in the tip portion 2 is in the range of 0.8 mm to 4 mm, preferably in the range of 1.5 mm, Within this range, each bristle bundle 5
The length of the inner bristle 5a is irregular.
The front part 2 is formed so as to stand up in a stepped manner with respect to the rear part 3. Also, bristle bundles 5, 6
Represents a plurality of bristles 5a and 6a (for example, 30 to 60
Books) are planted on the flocking table 1 in a bundled state.

Here, each bristle bundle 5 of the tip portion 2
The difference between the longest and shortest lengths of the inner bristle 5a is 0.8
The reason why the length of the bristles 5a in each bristle bundle 5 is made uneven within the range of mm to 4 mm and within this range is as follows. In other words, if the irregularity is made less than 0.8 mm, the bristle bundle is made just as if the hair length at the tip portion 2 of the flocking table 1 is made shorter, and if the irregularity is made less than 4 mm. This is because the shortest bristle 5a in 5 does not come into contact with the last molar, its gum, or the like.

It is preferable that the bristles 6a in each of the bristle bundles 6 planted in the rear portion 3 are made uneven like the bristles 5a in the bristle bundle 5 planted in the front portion 2. Further, the average bristle 5a planted in the front part 2 has an average bristle length of 10 mm or less, preferably 8 mm to 9 mm, and is 0.5 mm or more in comparison with the average bristle 6a bristle planted in the rear part 3. Preferably 1mm
A difference of about 2 mm is provided.

Further, it is preferable that the ends of the bristles 5a and 6a are formed in a spherical shape. In this case, 50% or more of the plurality of bristles 5a and 6a adjacent to any one of the bristles 5a and 6a is a spherical portion 5 at the tip of the one bristles 5a and 6a.
b, 6b (do not have different hair lengths). This is because the one bristle 5
If there are a large number of bristles 5a, 6a having the same hair length adjacent to a, 6a, the spherical portions 5b, 6b come into contact with each other and the tips of the bristles 5a, 6a are widened.

It is preferable that the diameter of the portion of the bristles 5a and 6a except the tip is set to 6/1000 to 15/1000 inches. If it is less than 6/1000 inches, the "strain" of the bristles 5a and 6a itself is weakened, and the force applied during brushing may not be effectively applied as a plaque removal or gum massage force. Beyond, Bristle 5a, 6a
The "stiffness" of itself becomes too strong, and the feel to the gums becomes worse.

The diameter of the spherical portions 5b, 6b at the tips of the bristles 5a, 6a is 1.1 to 1.1 times the diameter of the portion excluding the tips.
It is set to about 2.5 times, preferably about 1.2 to 2.0 times. If it is less than 1.1 times, it is not different from a normal type toothbrush in which the spherical portions 5b and 6b are not substantially formed, and the effect is insufficient. If it exceeds 2.5 times, the bristles bundles 5 and 6 are not. The hair tips spread and the appearance deteriorates. Also,
The spherical portions 5b and 6b are not necessarily spherical, but may have an elliptical shape, a nail shape, or a cubic shape with four rounded corners.

According to the toothbrush of the present embodiment configured as described above, the bristle 5 in the tip portion 2 of the flocking table 1
a bristle 6 at the rear part 3 of the flocking table 1
a, and the difference between the longest and shortest lengths of the bristles 5a in each bristle bundle 5 in the tip portion 2 is in the range of 0.8 mm to 4 mm, and each bristle is within the range. Since the lengths of the bristles 5a in the bundle 5 are irregular, the stiffness of the bristles 5a does not become too strong (too hard), and even between teeth which are difficult to remove plaque during brushing. The tip of the bristle 5a easily enters, and the tip of one of the bristle 5a in each bristle bundle 5 comes into contact with the last molar, so that plaque can be effectively removed without leaving unpolished.

Further, since the spherical portions 5b, 6b are provided at the ends of the bristles 5a, 6a, plaque such as between the teeth can be scraped off while massaging the gums. Furthermore, the bristle 6a in the rear part 3 of the flocking table 1
Is longer than the bristle 5a in the tip portion 2 and the average bristle bundles 5 and 6 of the entire flocking table 1 have the same average bristle tip position.

Note that the toothbrush of this embodiment is not limited to the above-described embodiment shown in FIG. 1, but may be a toothbrush configured as shown in FIGS. 2 to 5 , for example.

[0017] That is, as shown in FIG. 2, the bristles 5
a, 6a without a spherical object at the tip, the tip portion 2 of the flocking table 1
Only the bristles 5a in each bristle bundle 5 may have irregular tips within a range of 0.8 mm to 4 mm. As shown in FIG. 3 , only the bristles 5a in each bristle bundle 5 at the tip portion 2 of the flocking table 1 have irregular tips within a range of 0.8 mm to 4 mm, and a spherical portion is provided at the tips of the bristles 5a. 5b may be formed,
Also, as shown in FIG. 4 , even if the front portion 2 of the flocking table 1 is bent to provide a step between the rear portion 3 and the bristle bundles 5 and 6 of the entire flocking table 1, the average bristle bundle positions are aligned. Good. As shown in FIG. 5 , the flocking table 1 is divided into a front part 2 and a rear part 3.
And the intermediate part 7 may be formed in three stages, and the average bristle bundle positions of the bristle bundles 5 and 6 of the entire flocking table 1 may be aligned.

Further, the bristle 5a implanted in the leading portion 2 of the flocking table 1 has a shorter hair length than the bristle 6a implanted in the rear portion 3 of the flocking table 1. The bristle bundles 5, 6 in the front part 2 and the rear part 3 have their respective average bristle tip positions substantially aligned on the same plane, and the bristle 5 a in each bristle bundle 5 in the front part 2.
If the difference between the longest and shortest lengths is within a range of 0.8 mm to 4 mm and the lengths of the bristles 5a in each bristle bundle 5 are not uniform within the range, the portion of the handle 4 is bent. A toothbrush, an electric toothbrush, or a toothbrush with a built-in dentifrice may be used.

Furthermore, the toothbrush of the present invention includes at such form of embodiment shown and described above flocked base 1 and the handle 4 in FIGS. 6 to 8
Since as hereinbefore, is then added to describe these embodiments. FIG. 6 is a side view showing a further preferred embodiment of the toothbrush of the present invention. In the toothbrush of this embodiment, the handle 4 is a neck 41 integrally connected to the flocking table 1 and a main body of the handle 1. And a grip portion 42.

Then, the flocking table 1 is moved to the grip 4
The bristles 2 are bent or curved toward the bristles 5a and 6a with respect to 2, and the flocked table 2 is further bent or curved toward the neck 4 with the bristles 5a and 6a. Here, the length of the flocking table 1 is 10 mm to 2 mm.
Set in the range of 5mm and this 10mm to 25m
m is preferably set to 12 mm to 22 mm.
It is . When the length of the flocking table 1 is less than 10 mm,
This is because the flocked area may be small and the brushing efficiency may be deteriorated, and if it exceeds 25 mm, the lingual side of the back teeth may be difficult to polish.

The bending or bending angle θ ₁ of the flocking table 1 with respect to the neck 41 is set within a range of 5 ° to 15 °.
In this range of 5 ° to 15 °, preferably 6 ° to
It is set within the range of 10 °. When the 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 bending or bending angle (total angle including the angle θ ₁ ) θ ₂ of the flocking table 1 with respect to the grip portion 42 is 7
° is set in the range of 30 °, and also in the range of 7 ° to 30 °, preferably set in the range of 10 ° to 20 °
You . When the 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 when bent or the bending angle theta ₂ exceeds 30 ° Similarly, the removal rate of the plaque of the back teeth is low, and there is a possibility that brushing particularly on the back teeth becomes difficult.

The toothbrush of the present embodiment has a neck 41
The portion 4a near the grip portion 42 is once bent downward with respect to the central axis L of the grip portion 42, and then inclined so as to be located above the central axis L, thereby achieving the object of the present invention. It is intended to achieve it more effectively. Figure 7 is a side view showing still another preferred embodiment of the toothbrush of the present invention, FIG 8 is a plan view thereof, the toothbrush of this embodiment, finger contact portion in a portion of the portion 4a in the embodiment shown in FIG. 6 4b are those of providing the ease of use more, otherwise is configured similarly to the embodiment shown in FIG.

[0023]

As described above, in the toothbrush of the present invention, the bristle implanted at the leading end of the implanting base does not become too hard, and can be brushed sufficiently without reaching the last molar and leaving unpolished. .

[Brief description of the drawings]

FIG. 1 is a partially enlarged side view showing a flocking table of one embodiment of a toothbrush of the present invention.

FIG. 2 is a partially enlarged side view showing another embodiment of the toothbrush of the present invention.

FIG. 3 is a partially enlarged side view showing another embodiment of the toothbrush of the present invention.

FIG. 4 is a partially enlarged side view showing another embodiment of the toothbrush of the present invention.

FIG. 5 is a partially enlarged side view showing still another embodiment of the toothbrush of the present invention.

FIG. 6 is a side view showing a further preferred embodiment of the toothbrush of the present invention.

FIG. 7 is a side view showing another preferred embodiment of the toothbrush of the present invention.

FIG. 8 is a plan view of the embodiment shown in FIG. 7;

Claims (2)

(57) [Scope of request for utility model registration] 1. A flocking table provided with a bristle on a grip portion.
Are integrally connected via a neck, and the flocking table is
Bend or bay toward the bristle side with respect to the gripper
In the bent toothbrush, the flocking table is provided, and the bristle is provided to the neck.
And the length of the flocking table is 10 mm to 2
5 mm, and the planting of the
The bending or bending angle of the hair rest within the range of 7 ° to 30 °
Set and bend angle of the flocking table with respect to the neck
And set in the range of 5 ° to 15 °, also, another of the flocked base, tip portion and one or two stages of the 1-stage
2 or 3 steps where the top part is in the upper position
Is formed in the stepped, shorter than the hair-length bristles are flocked hair length bristles, which are planted in the tip portion of the bristle base to other parts of the plant hairs stand, and and tip portion of the bristle base The average bristle tip positions of the bristle bundles in the other portions are aligned on substantially the same plane, and the difference between the longest and shortest lengths of the bristles in each bristle bundle in the tip portion is 0.8 mm to 4 m.
be in the range of m, the uneven lengths of the bristles in each bristle bundles within said range, further average of bristles are flocked first portion of the flocked base
The bristle length of the bristle planted on the hair
The difference from the average hair length is 0.5 mm or more, and the tip
A toothbrush having an average bristle bristle length of 10 mm or less . Wherein at least the tip of the bristles are flocked in flocking stand tip portion characterized by being formed spherically claim 1 Symbol placement of the toothbrush.