JPH0535702Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a toothbrush that has excellent cleaning effects on interdental areas, gingival pine surge effects, and ease of use.

[Conventional technology]

BACKGROUND ART Conventionally, a toothbrush having both a cleaning effect and a pine surge effect has been proposed, in which soft bristles and hard bristles are flocked to the flocked surface of a flocked head.

For example, (1) the device disclosed in Japanese Utility Model Publication No. 18372/1972 forms a flocking surface by alternately forming concave portions and convex portions along the longitudinal direction of the handle on the flocking head, and this uneven flocking surface. (2) The toothbrush disclosed in Japanese Patent Publication No. 60-26650 is a toothbrush that has short bristles and long bristles alternately by implanting bristles with a uniform height on the bristles. By creating an inclined surface that rises from the head side toward the handle, and by planting the bristles on the inclined surface with the tips of the bristles at a uniform height as in (1) above, the hardness (softness) of the brush increases along the length of the handle. This toothbrush is designed to change the direction in stages, and (3) the toothbrush described in Japanese Patent Publication No. 61-32502 has an inclined flocked surface formed at the tip and rear end of the flocked head. The longitudinal cross-sectional shape of the hair transplant head is made into a trough-like shape, and the hair is transplanted into the hair transplant head with the tips of the hair at a uniform height.
The soft hair and the terminal hair are arranged in that order.

[The problem that the idea attempts to solve]

The conventional method described above uses brushes of uniform thickness and different lengths, and the height of the tips of the brushes (height from the back of the flocking head) is uniform (the bristles at the flocking part are flattened). This resulted in a toothbrush having both soft and hard bristles, but its cleaning effect and pine surge effect were not sufficient.

In other words, with the toothbrush described in (1) above, the hardness of the brush is repeatedly hard and soft, then hard and soft, etc., so it is easy to leave unpolished areas in the tooth surface concavities. Since the degree of flexibility is constant and there is no intermediate hardness, there is a problem that the feeling of use on tooth surfaces and gums is poor.
In other words, in terms of cleaning effectiveness, hard brushes are suitable for cleaning relatively deep areas such as interproximal surfaces and pits and fissures on the occlusal surface. It is easy to leave unpolished areas on the surface.

In addition, in this toothbrush, since there is a step between the long bristles and the short bristles, the spacing between these bristle holes is limited compared to the spacing between the bristle holes on a normal flat or sloped bristle surface. It needs to be wider. In other words, in the case of a flat or sloped surface, the tufting hole spacing can be narrowed to about 1.0 mm, whereas with the toothbrush described in (1) above, it usually has to be about 1.5 mm, Since it is necessary to increase the number of steps in accordance with the repetition of this process, the toothbrush has large tufted hole intervals, that is, has coarse bristles, which has a major disadvantage in that its cleaning effect and durability are poor.

On the other hand, in the toothbrush described in (2) above, the entire bristle-flocking surface is formed by one inclined surface, and the brush does not repeat hard and soft brushes, so the expected effect cannot be obtained. .

In other words, the size of the irregularities on the occlusal and interproximal surfaces of teeth and the cervical region of the teeth, where plaque easily adheres, is considerably smaller than the size of the grafted area, and the brushing stroke (movement distance) of back and forth movement is usually 10 mm. Therefore, in a toothbrush in which the entire flocked surface is one slope as described in (2) above, the length of the slope in the longitudinal direction of the toothbrush is too long, and there is a difference in hardness in the uneven part. It is almost impossible to brush with a brush that works efficiently. Furthermore, the above (3) also has similar problems.

The object of the present invention is to provide a toothbrush that can accurately solve the above-mentioned problems of conventional toothbrushes.

[Means to solve the problem]

The present invention is a toothbrush in which a bristle part having brushes on the bristle surface of the bristle head is provided at the tip of the handle. three or more rows of brushes are arranged perpendicularly to the longitudinal direction of the handle on each inclined flocking surface, and the tips of all the brushes are at the same height,
A toothbrush characterized in that the gap between the brush rows between adjacent slanted bristle flocking surfaces is wider than the gap between the brush rows on the slanted bristle flocking surface.

[Effect]

In the toothbrush according to the present invention, the flocked head has hard,
The brushes of three or more hardnesses (medium and soft) are arranged in this order along the length of the handle, and only this arrangement is repeated, so it is easy to clean the interdental areas and pits and fissures. The bristles with a high density of flocking of different hardness hit successively from the deep part to the shallow part, thus leaving no residue after polishing, resulting in a toothbrush with excellent cleaning effect. In addition, it has an excellent pine surge effect on the gums, and since brushes with three or more hardnesses coexist, the impact of the hardest brush on the gums is gradually alleviated by the brushes with the second, third, and so on. , it provides good contact with the gums, and there is no need to worry about damaging the gums with a hard brush.

The tooth surfaces on the buccal and lingual sides are composed of concave interproximal areas and convex cervical areas and smooth surfaces. fit. In other words, depending on the hardness of the brush, rows of hard brushes work on the recesses between the teeth, soft brushes work on the necks and convex parts of smooth surfaces, and brushes with intermediate hardness work on the corners. Therefore, it can be cleaned efficiently.

Furthermore, the gap between the brush rows between adjacent slanted bristle surfaces is wider than the gap between the brush rows on the slanted bristle surface, so the side with the longest brush is free, so it has the largest movement (softest). Does not obstruct the movement of long brushes.

The long brush, which flexes greatly under pressure from above, can flex sufficiently, giving it a soft feel.

Since there is a wide gap with deep grooves on one side of the short brush, which has a particularly high scrubbing effect, scraped toothpaste is removed there and does not interfere with the next scrubbing.

Since the toothpaste can be taken into the gap, it is retained in the mouth without being dispersed during use, and the polishing effect can be maintained.

Since the brush blocks are spaced apart, the brush can reach between the teeth while avoiding the resistance of hitting the most protruding tooth surface.

Since the teeth fit into the above gap, it is easy to brush the back side of the teeth.

When cleaning the toothbrush, the gap is located at the lowest point, making it easy to clean, especially dirt.

When stored, water flows into the wide gaps and tends to dry out.

It produces the following effects.

[Example] Next, an example of the present invention will be described with reference to the drawings. As shown in FIGS. A plurality of inclined flocked surfaces 4 ₁ , 4 ₂ , 4 ₃ which are inclined along the longitudinal direction of the handle 1 are formed on the head 3 via vertical surfaces 5 ₁ , 5 ₂ . These inclined flocking surfaces are inclined surfaces that rise from the tip to the rear end of the flocking head 3, and the vertical plane is perpendicular to the back surface of the flocking head, which is formed into a flat shape. A plurality of convex portions 6 ₁ , 6 ₂ , and 6 ₃ are formed by the vertical planes and are substantially congruent with each other and have the same top height. Note that, as shown in the figure, only the back surface of the convex portion ₆₃ may be an inclined surface that descends toward the handle 1 side.

Three rows of brushes 7 are arranged on each inclined flocking surface, and each row is flocked in a direction perpendicular to the longitudinal direction of the handle 1, that is, along the width direction of the flocking head. These brushes 7 are vertical, and the tips of all the brushes 7 are trimmed to the same height. In addition, in the figure, 8 is a neck and 9 is a hole.

Next, in the embodiment shown in FIG.
₁ , 4 ₂ , and 4 ₃ are inclined surfaces that descend from the tip of the flocking head 3 toward the rear end. The other configurations are the same as the example shown in FIG.

Comparing the effects of the example in Figure 1 and the example in Figure 3, the former has soft hair at the tip of the hair transplant head and is suitable for pine surgery of the molar gingiva, whereas the latter has soft hair at the tip of the hair transplant head. The difference is that the tip has hard bristles, and the tip can be processed to be thin, making it more effective in cleaning the corners of molars.

[Effect of idea]

As described above, the toothbrush according to the present invention has bristles with a high density of flocking of different hardness that successively hit from the deep part to the shallow part of the recesses of the interdental areas and pits and fissures, thereby eliminating unpolished areas. It has an excellent cleaning effect and gingival pine surge effect, and since the gap between the brush rows between adjacent slanted bristle grafting surfaces is wider than the gap between the brush rows on the slanted bristle grafting surface, the softest brushes are able to bend sufficiently. This makes it easier to clean the teeth, improves the interdental cleaning effect, makes it easier to brush the back side of the teeth, makes it easier to remove scraped plaque, and makes it easier to clean toothbrushes and dry them during storage. This has extremely useful effects.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention; FIG. 2 is a front sectional view taken along line 2, FIG. 2 is a plan view thereof, and FIG. 3 is a front sectional view of another embodiment. 1...Handle, 2...Flocking part, 3...Flocking head,
4 ₁ , 4 ₂ , 4 ₃ ... inclined flocked surface, 5 ₁ , 5 ₂ ... vertical surface, 6 ₁ , 6 ₂ , 6 ₃ ... convex part, 7 ... brush, 8 ...
...Neck, 9... holes.

Claims (1)

[Scope of utility model registration request] In a toothbrush in which a bristle-flocked part having brushes on the bristle-flocked surface of the bristle-flocked head is provided at the tip of the handle, a slanted bristle-flocked surface that is inclined along the longitudinal direction of the handle is repeatedly formed on the bristle-flocked head through a vertical plane. , three or more rows of brushes are arranged perpendicularly to the longitudinal direction of the handle on each inclined flocked surface, and the bristles of all the brushes are at the same height, and the gaps between the brush rows between adjacent inclined flocked surfaces are arranged between the brushes on the inclined flocked surface. A toothbrush characterized by having bristles planted wider than the gaps between the rows.