JPH10192053A - Tooth brush making height of tooth brush bristle regularly uneven vertically and horizontally - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tooth brush for promoting the effect of tooth brushing at the time of brushing teeth. SOLUTION: The tooth brush 1 gives variation in the length of the brush bristles 4 to allow the tooth brush bristles to easily reach between teeth and gums to improve the elasticity of bristle bunches 5. Namely, long bristle bunches 7 and short bristle bunches are arrayed to make regular projection/recession in vertical and horizontal directions at the time of cutting the bristle 4 to increase the curve of the long bristle bunches 7 and to increase repulsive force by the short bristle bunch 8 to keep excellent elasticity. Consequently a using feeling is improved and debris removing ability is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush.

[0002]

2. Description of the Related Art Generally, a toothbrush is provided with a handle (2) and a toothbrush head (3) at the tip of the handle (2), where toothbrush bristles (4) are implanted. The brush part (6) is composed of a brush part, and the brush part (6) plays a role of brushing teeth. In the existing toothbrush, the length of the toothbrush bristles is constant, or the end of the toothbrush bristles is located on one plane by gradually changing the length, and the toothbrush bristles cannot reach the deep part of the tooth Often.

Recently, in order to improve the cleaning ability between teeth, long and short hair bundles are regularly arranged in units of one or two rows of hair bundles in the lateral direction (B). Special toothbrushes that have been shaved have been developed.

[0004] However, it is inconvenient to brush such toothbrushes in the same manner as a general toothbrush, and although it is effective for brushing between teeth, it is not suitable for cleaning all teeth in the oral cavity.

[0005]

In the toothbrush according to the present invention, when the toothbrush bristles (4) are cut off, the length of the bristle bundle (5) is large in the vertical direction (A) and the horizontal direction (B). The gist of the present invention is to make the surface uneven.

FIG. 1 is a perspective view showing a toothbrush according to the present invention, which comprises a handle (2) and a brush portion (6), and the brush portion (6) is located at the tip of the handle (2). The brush hair (4) is implanted in the portion (3). FIG. 2 is a plan view of the toothbrush head according to the present invention.

In the toothbrush of the present invention, short bristle bundles (5) and (8) are not arranged in rows in the vertical direction (A) or the horizontal direction (B), but irregularities are regularly formed in all directions. As it is present, the overall morphology of the brush part (6) is flat, the convenience of brushing can be maintained as with a typical toothbrush, and only the local parts that come into contact with the tooth when brushing are seen In addition, the long and short bristle bundles (5) and (7) are arranged continuously, so that the adhesion to the teeth is enhanced, and the toothbrush bristles (4) are removed to the part that is difficult to clean with a general toothbrush such as between teeth or gums. Reach easily.

[0008] In addition to the excellent adhesion described above, the present invention is superior in elasticity to general toothbrushes.

The reason will be described with reference to FIG. FIG. 4 is a schematic diagram for explaining the function of the hair bundle.

[0010] The toothbrush bristles (4) bend when the user comes into contact with the teeth by the pushing force of the brush during brushing.
In the present invention, tooth cleaning is mainly performed by long hairs (7), and a hair bundle in contact with a tooth bends until it contacts a hair bundle (5) located in the next row. At this time, since the next row of hair bundles (5) is short, the degree of bending is greater than that of a general toothbrush, and accordingly the elasticity is enhanced accordingly. The high stiffness of the short hair bundles (8) is also one of the factors that increase the elasticity of the hair.

Although it is possible to widen the interval between the hair bundles (5) in order to make the hair bundles (5) bend more, it is possible to increase the curvature of the hair bundles (5), thereby increasing the elasticity. On the contrary, there is a disadvantage that the hair size is reduced and the gap between the hairs is increased.

The toothbrush of the present invention will be described below with reference to the accompanying drawings. In FIG. 2, the leftmost row is arranged so that short bristle bundles (8) and long bristle bundles (7) are arranged alternately from above, and from the next row, the left bristle bundle (5) is arranged. ) Are arranged such that the shorter hair bundle (8) is located if the left hair bundle (5) is shorter, and the longer hair bundle (7) is located if the left hair bundle (5) is shorter.

[0013] Such an arrangement can be embodied in various ways. The first method uses two flocking steps,
First, after transplanting only the portion corresponding to the short hair and cutting the hair to a desired length, and then finishing the tip of the hair, the portion corresponding to the longer hair is implanted and the cutting process of the hair and the tip of the hair are performed. This is a method of completing the desired toothbrush by passing through, but this method has the advantage that the hair cutting state and the finish of the hair tip are clean and there is no need to add complicated mechanical equipment, but the production time is There are disadvantages that take longer.

In the second method, the hair transplantation process is performed in the same manner as in the manufacture of a general toothbrush, but the device for fixing the toothbrush is rotated at an appropriate angle during the hair cutting process. FIG. 3 is a schematic diagram for explaining the method of cutting the toothbrush bristles.

When a conventional toothbrush having irregularities only in the horizontal direction (B) is manufactured, the hair is cut in a state in which the hair cutting blade is perpendicular to the vertical direction (A) of the toothbrush. Use a general blade that has bumps or bumps to match the shape of the desired toothbrush, or a short bristle portion and a long bristle using a guide suitable for the roughness of the desired toothbrush. Selectively cut out parts. If this method is applied and the toothbrush fixing device is further rotated, the hair is advanced to the form shown in FIG.
The desired toothbrush configuration is completed. That is, the toothbrush holder is adjusted to a predetermined angle when cutting hair, and the cutting blade is manufactured so as to pass obliquely with respect to the longitudinal axis (A) of the toothbrush.

Although the hair cutting process of this method does not have a great difference from the existing process, it takes a little time to produce, but has a disadvantage that a mechanical device for rotating the toothbrush fixing device must be added.

In the present invention, the height difference between the long hair (7) and the short hair (8) is 10% to 2% of the distance between the long hairs.
It is preferably 0%.

Further, in the present invention, the distance between long hairs is preferably 1 mm to 4 mm.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the toothbrush of the present invention will be described with reference to the accompanying drawings, but the technical scope of the present invention is not limited to these embodiments.

The following Examples 1 to 3 are composed of a handle (2) and a brush portion (6) formed by implanting toothbrush bristles (4) on the tip toothbrush head (3) of the handle (2). In a normal toothbrush, hair is cut such that the length of the toothbrush bristle bundle (5) is different from the length of the adjacent bristle bundle (5) as shown in the drawing. The hairs are arranged so as to be arranged as shown in FIG.

Example 1 A toothbrush manufactured according to the above method, wherein the difference between the length of the long bristle (7) and the length of the short bristle (8) is 75% of the distance between the bristle. A toothbrush with hair.

Example 2 A toothbrush manufactured according to the above method, wherein the length of the long bristle (7) and the length of the short bristle (8) are cut off such that the difference between the length of the long bristle (7) and the length of the long bristle (7) is about the same. Toothbrush.

Example 3 A toothbrush manufactured according to the above method, wherein the difference between the length of the long bristles (7) and the length of the short bristles (8) is 125% of the distance between the long bristles. It is a toothbrush with hair cut off.

Comparative Example 1 This is a conventional toothbrush made by a normal toothbrush manufacturing method, in which the entire brush portion (6) is made of toothbrush bristles (4) of the same length.

COMPARATIVE EXAMPLE 2 A toothbrush prepared by a conventional method for manufacturing a toothbrush was cut so that long and short hairs were arranged in rows in the horizontal direction (B). 2.0m difference
m (83% of the distance between hairs).

* In all Examples and Comparative Examples, hairs of the same diameter were implanted on a toothbrush table of the same structure, and only the hair cutting was different. Here, the toothbrush base of the same structure is an existing general toothbrush, the angle of the neck (9) of the toothbrush is 0 °, and the length of the head (3) in the vertical direction is 32.0 mm. , The lateral length is 11.5 mm and the spacing between long hairs is 2.4 mm.

Experimental Example 1: Evaluation of Consumer Preference for Usability
Using the toothbrush of the present invention manufactured in the above example and the existing toothbrush manufactured as a comparative example for a panelist with a price of 30 using a 5-point comparison method of preference for usability through a comparative panel test. The average value was measured. The results are shown in Table 1. At the time of the test, a toothbrush different from that of Comparative Example 2 was used at the same time, and the score of Comparative Example 2 was standardized to 3 so that panelists were given relative scores of different toothbrushes. The test was conducted by changing a kind of toothbrush each day for four days.

[0028]

[Table 1]

From Table 1, it is shown that the toothbrushes that have been cut so as to be uneven are generally better than the existing toothbrushes in the evaluation of consumer preference for the feeling of use, and the difference in the length of the toothbrush (4). However, it can be seen that the toothbrush of the present invention is more effective when brushing teeth. In the case of Comparative Example 2, considering that the toothbrush was specially designed for cleaning between teeth, it can be seen that the feeling of cleaning between teeth of the present invention is considerably excellent.

Experimental Example 2: Comparative measurement of stiffness of toothbrush bristles
After connecting the device that can fix the fixed toothbrush head (3) to the universal tester, insert the test toothbrush and move the toothbrush in the vertical direction of the toothbrush, while the toothbrush bristles (4)
Was measured by ISO when passing through a mesh wire having a diameter of 0.4 mm, and the results are shown in Table 2.

[0031]

[Table 2]

From Table 2 above, it can be seen that the stiffness value of the toothbrush manufactured according to the embodiment of the present invention is slightly softer than that of a general toothbrush having a flat cross section. That is, it can be said that while having a softer feeling, the elasticity of the hair and the feeling of washing between the teeth and the gums were improved.

Experimental Example 3: Toothbrush plaque removal capability
Floor evaluation Fifteen adult males and females aged 21 to 30 with relatively uniform dentition and no missing teeth were selected as subjects for the experiment, and Comparative Example 1 was used.
The group using the toothbrush of Example 1 and the group using the toothbrush of Example 1 were divided into groups so that the oral conditions of the two experimental groups were the same, and the same toothpaste was used. Plaque index 4 weeks after tooth brushing
Index) was measured. Before starting the clinical experiment, both groups were brushed for 2 weeks with the same toothpaste as the experimental toothpaste using the toothbrush of Comparative Example 1 to reduce the deviation of both groups and measure the initial plaque index. The plaque index shown in Table 3 is based on Turesky Quigley and Hein's Plaque Inde
x (Score for plaque on narrow and lingual surfaces of whole teeth) and Proximal / Marginal Plaque Index (score for plaque on interdental surface of narrow and lingual surfaces of all teeth) .

From the following table, it can be seen that the plaque index of the group using the toothbrush of Comparative Example 1 increased, while the plaque index of the group using the toothbrush of Example 1 decreased over all the surfaces of the teeth, and especially the front teeth In comparison, it can be seen that the plaque index of the interdental surface and the posterior teeth portion was visibly reduced. That is,
It can be seen that not only the cleansing feeling of the interdental surface and the back teeth part was improved, but also the actual cleaning power was improved.

[0035]

[Table 3]

As described above, the present invention has been described with reference to the embodiments. However, the technical scope of the present invention is not limited to these embodiments.

[0037]

According to the present invention, the length of the toothbrush bristles is regularly arranged at different lengths so as to form a continuous unevenness in the vertical and horizontal directions of the brush portion. Toothbrush bristles easily reach the gums and have an enhanced elasticity due to the interaction of long and short tresses,
Not only the plaque removal but also the gum massage ability was improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a toothbrush according to the present invention.

FIG. 2 is a plan view of a toothbrush head according to the present invention.

FIG. 3 is a schematic view for explaining a method of cutting hair of a toothbrush.

FIG. 4 is a schematic diagram for explaining the function of a hair bundle;
(A) illustrates the invention and (B) illustrates the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toothbrush 2 Handle 3 Toothbrush head 4 Toothbrush bristle 5 Hair bundle 6 Brush part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kim Young-ho Korea South Korea Dejong Yu-song Jung Min Dong Saison Apartment 106-1105

Claims (4)

[Claims] 1. A hair bundle (5) when the toothbrush bristles (4) are cut off
A toothbrush characterized in that the length of the toothbrush has a number of regular irregularities in the vertical direction (A) and the horizontal direction (B). 2. The toothbrush according to claim 1, wherein the toothbrush holder is adjusted so that the toothbrush holder is at a predetermined angle during hair cutting, and the hair cutting blade passes obliquely with respect to the longitudinal axis (A) of the toothbrush. 3. The toothbrush according to claim 1, wherein the height difference between the long bristle (7) and the short bristle (8) is 10% to 20% of the distance between the long bristle. 4. The toothbrush according to claim 1, wherein an interval between long hairs is 1 mm to 4 mm.