JP4688345B2 - toothbrush - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toothbrush formed by implanting a bristle bundle group in which a plurality of bristle bundles configured by bundling bristles into a flocking table.
[0002]
[Prior art and problems to be solved by the invention]
A toothbrush is formed by planting and fixing a plurality of bristle bundles formed by bundling bristles on a flocking table by a method of driving a flat wire or fusing with heat. In addition, toothbrushes are known to have a better function of scraping plaque on the tooth surface as the cross-sectional area of the bristle bundle to be implanted is larger and the rigidity is higher. In addition, it has become possible to implement bristle bundles having various cross-sectional shapes and arrangements, which has been difficult with flat line flocking.
[0003]
However, if the cross-sectional area of the bristle bundle is large, the effect of removing plaque on the tooth surface is improved, but the rigidity becomes high, the tooth contact deteriorates and the soft feeling is lost, and the feeling of use is lost. In addition to worsening, it is difficult for bristles to enter the gaps between the teeth, and tooth brushing cannot be performed efficiently. In addition, it is difficult to effectively remove and clean plaque from the back of the back teeth and the fissures, which are particularly difficult to clean and caries.
[0004]
An object of this invention is to provide the toothbrush which can perform the effective toothbrushing while improving the effect which removes plaque, and maintaining a favorable usability | use_condition. It is another object of the present invention to provide a toothbrush that makes it possible to effectively remove and clean plaque from the back of the back teeth and the fissures, which are particularly difficult to clean and cause caries.
[0005]
[Means for Solving the Problems]
The present invention provides a toothbrush occupied cross-sectional area bristle bundles group 5 mm ² 100 mm ² were planted in flocking stage, than the rigidity of the bristle bundles in the center portion of the occupied section of the bristle bundle group, periphery The object is achieved by providing a toothbrush in which the bristle bundle located in the portion has a high rigidity.
[0006]
The bristle bundle group in the above description is an aggregate of a plurality of bristle bundles that are planted together on the flocking table, and the occupied cross-sectional area of the bristle bundle group connects the circumscribing at the root of the planted bristle bundle group. This means the area of the figure that can be Further, the bristle bundle group can be provided at one place or two or more places on the flocking table, and all of the bristles bundles to be flocked on the flocking table may be replaced with a plurality of bristle bundle groups. Further, in order to increase the rigidity of the bristle positioned at the outer peripheral portion, compared with the rigidity of the bristle positioned at the central portion of the cross-section of the bristle bundle, for example, the bristle bundle at the central portion or the bristle constituting the same is thinned, and the bristle at the outer peripheral portion is reduced. A method of changing the hardness of the bundle or the bristles constituting the bundle in a stepwise or continuous manner, a method of changing the hardness of the bristles bundle by using materials having different rigidity, etc. it can. Also, the occupied cross-sectional area of the bristle bundle group is small, the rigidity is lower than 5 mm ^2, and decreases the effect of scraping off plaque or the like on the surface of the tooth, and larger and rigidity excessively higher than 100 mm ^2, the teeth The contact is deteriorated and the soft feeling is lost, the feeling of use is deteriorated, and the bristle is difficult to enter into the gap between the teeth, so that the toothpaste cannot be efficiently performed.
[0007]
According to the toothbrush of the present invention, than bristle bundles located in the central portion occupied cross-sectional area rigidity is increased in the bristle bundles is positioned on the outer peripheral portion provided with a bristle bundle group of 5 mm ² 100 mm ^2, the According to the bristle bundle group, plaque can be effectively scraped by the bristle bundle having high rigidity at the outer peripheral portion, and the rigidity of the entire bristle bundle group is suppressed by the bristle bundle having low rigidity at the central portion. It also improves the teeth and makes it possible to polish the teeth so that they wrap around the teeth. In addition, the bristle bundle with low rigidity in the central part is supported by the bristle bundle with high rigidity in the outer peripheral part and does not bend too much, and the bristle can be smoothly inserted into the gaps between the teeth and between the teeth and gums. Enables efficient tooth brushing. Furthermore, if this bristle bundle group is arranged at the front end portion of the toothbrush in the flocking table, the bristle bundle group keeps a good feeling of use and is difficult to clean and is a frequent site of caries. It is possible to effectively remove and clean plaque from the back and fissures.
[0008]
Furthermore, according to the toothbrush of the present invention, than bristle bundles located in the central portion, the bristle bundle group occupied cross-sectional area rigidity is increased is 5 mm ² 100 mm ² of bristle bundles located at the periphery, toothpaste It becomes easy to hold the agent, and when brushing, it is possible to spread the active ingredients of the dentifrice and other toothpastes to every corner of the oral cavity by improving the foaming of the dentifrice as if stirring with a whisk. .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to preferred embodiments thereof. As shown in FIG. 1 and FIGS. 2A and 2B, the toothbrush 10 of the present embodiment is a toothbrush main body comprising a gripping portion (not shown), a flocking table 14, and a neck portion 15 connecting them. A plurality of bristle bundles 12 and 13 are formed by bundling the bristle 11 on the flocking table 14.
[0010]
And according to the toothbrush 10 of this embodiment, the occupation cross-sectional area in the root part 16 formed by bundling a plurality of small-diameter bristle bundles 12 is about 20 mm ^{2 at} the distal end portion in the longitudinal direction X of the toothbrush 10 in the flock base 14. The bristle bundle group 17 is planted in one place, and a medium-diameter bristle bundle 13 having a cross-sectional area of about 2 mm ^{2 at the} root portion 18 is predetermined vertically and horizontally at a rear portion in the longitudinal direction X from the bristle bundle group 17. A plurality of plants are planted at intervals.
[0011]
The toothbrush body is made of a synthetic resin such as polypropylene or ABS resin, and the bristle bundle group 17 and the medium-diameter bristle bundle 13 are formed on the flat surface of the flocked portion 14 by a known method such as heat fusion. Planted.
[0012]
The bristle 11 constituting each of the bristle bundles 12 and 13 is a filament material made of a synthetic resin such as nylon and having a thickness of 0.1 to 0.3 mm, for example, and bundles several to several dozens, for example. Thus, the bristle bundles 12 and 13 are formed.
[0013]
According to this embodiment, the small-diameter bristle bundle 12 has a circular cross-sectional shape with a diameter of about 1 mm, and this is planted on the flocking table 14 as an aggregate of, for example, 13 pieces, and has a circular shape with an area of about 20 mm ^2. A bristle bundle group 17 having an occupied cross section is formed. The bristle bundle group 17 is planted at the tip portion in the longitudinal direction X of the flocking table 14 with a bristle length such that the tip height from the flocking table 14 is 9 to 11 mm. Further, in the bristle bundle group 17, the rigidity of the small-diameter bristle bundle 12 located in the outer peripheral portion 20 is higher than the rigidity of the small-diameter bristle bundle 12 located in the central portion 19 of the circular occupied cross section. In other words, the small-diameter bristle bundle 12 of the central portion 19 is configured by bundling thin bristle 11 having a thickness of about 0.15 mm, so that its rigidity is lowest, while the bristle 11 of the outer peripheral portion 20 is Since the thick bristle 11 having a thickness of about 0.23 mm is bundled, the rigidity is the highest. Then, by setting the thickness of the bristle 11 constituting the small-diameter bristle bundle 12 of the intermediate portion 21 positioned between them to about 0.2 mm, the rigidity of the small-diameter bristle bundle 12 increases stepwise toward the outside. It is like that.
[0014]
In addition, according to the present embodiment, the small-diameter bristle bundle 12 has the tip height of the small-diameter bristle bundle 12 positioned at the center portion 19 of the circular occupied cross section of the bristle bundle group 17 as indicated by the broken line in FIG. The tip height of the small-diameter bristle bundle 12 positioned at the outer peripheral portion 20 is higher than that. That is, the small-diameter bristle bundle 12 of the central portion 19 has the lowest tip height from the flocking table 14 of about 9 mm, while the small-diameter bristle bundle 12 of the outer peripheral portion 20 has a tip height of 11 mm from the flocking table 14. The tip height of the small-diameter bristle bundle 12 is about 10 mm, and the tip height of the small-diameter bristle bundle 12 is gradually increased toward the outside gradually. It is trying to become. Then, by changing the tip height of the small-diameter bristle bundle 12 constituting the bristle bundle group 17 so as to increase toward the outside in this way, it is difficult to clean and against the back of the back tooth, which is a frequent site of caries. It is possible to remove and clean plaque more effectively.
[0015]
The tip height of the small-diameter bristle bundle 12 constituting the bristle bundle group 17 is smaller in the small-diameter bristle bundle 12 located in the outer peripheral portion 20 than in the small-diameter bristle bundle 12 located in the central portion 19 of the circular occupied cross section. It can also be lowered. Then, by changing the tip height of the small-diameter bristle bundle 12 so as to decrease toward the outside in this way, it is difficult to clean and the plaque is removed and cleaned from the cleft portion of the back tooth, which is a site of frequent caries. Can be performed more effectively.
[0016]
According to this embodiment, the medium-diameter bristle bundle 13 has a circular cross-sectional shape with a diameter of the root portion 18 of about 1.6 mm, about 3 mm in the longitudinal direction X, and 2.4 mm in the direction perpendicular to the longitudinal direction X. At a pitch of a certain degree, they are arranged at 22 locations in the region rearward from the bristle bundle group 17 of the flocking table 14 in the vertical and horizontal directions. According to the present embodiment, the medium-diameter bristle bundle 13 has the same configuration as a general bristle bundle without changing the rigidity of the bristle 11 or the tip height.
[0017]
And according to the toothbrush 10 of this embodiment, while improving the effect which removes plaque, efficient toothpaste can be performed, maintaining a favorable usability | use_condition. That is, the toothbrush 10 of the present embodiment is a group of bristle bundles having an occupied cross-sectional area of 20 mm ² , the rigidity of the small-diameter bristle bundle 12 positioned at the outer peripheral portion 20 is higher than that of the small-diameter bristle bundle 12 positioned at the central portion 19. 17, the bristle bundle group 17 can effectively scrape plaque by the small-diameter bristle bundle 12 having a high rigidity in the outer peripheral portion 20, and the small-diameter bristle bundle having a low rigidity in the central portion 19. 12, the overall stiffness of the bristle bundle group 17 is suppressed to improve the feeling of use, and the teeth can be polished so as to envelop the teeth, and the tooth contact is made gentle. Further, the small-diameter bristle bundle 12 having a low rigidity in the central portion 19 is supported by the small-diameter bristle bundle 12 having a high rigidity in the outer peripheral portion 20 and does not bend too much, and a gap such as an interdental portion or a boundary between teeth and gums. It becomes possible to penetrate into the smooth and perform efficient tooth brushing.
[0018]
In addition, according to the toothbrush 10 of the present embodiment, it is possible to effectively remove and clean plaque from the back of the back teeth and the fissures, which are particularly difficult to clean and are caries-prone sites. That is, in the toothbrush 10 of the present embodiment, the bristle bundle group 17 is arranged at the tip end portion in the longitudinal direction X of the toothbrush 10 in the flocking table 14 that contributes to the brushing of the back teeth. It is possible to easily improve the plaque removal efficiency and cleaning efficiency for the back of the back teeth and the fissures while maintaining the feeling of use.
[0019]
Furthermore, according to the toothbrush 10 of the present embodiment, the toothpaste is provided by the bristle bundle group having an occupied cross-sectional area of 20 mm ^{2 in} which the rigidity of the bristle bundle located in the outer peripheral portion is higher than that of the bristle bundle located in the central portion. It becomes easy to be held, and when brushing, it is possible to spread the active ingredient of a dentifrice such as a bactericidal agent to every corner of the oral cavity by improving the foaming of the dentifrice as if stirring with a whisk.
[0020]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, it bristles pencil groups of the cross-sectional area 5 mm ² 100 mm ² employs a variety of occupancy sectional shape as it is not always necessary to provide a circular occupied section, for example, bristles pencil groups 17 shown in FIG. 3 ' be able to. Further, as shown in FIG. 4, the bristles pencil groups 17 "occupied cross-sectional area of 5 mm ² 100 mm ^2, be provided to be inclined to the distal end side of the longitudinal direction X in the front end portion in the longitudinal direction X of the bristles stand 14 can, thereby, brushing technique of the user receive an bristles to back teeth naturally also Juvenile, it is possible to perform the removal and cleaning of plaque effectively. further, the occupied cross-sectional area is 5 mm ² 100 mm ² The bristle bundle group is not limited to one place, and can be provided at a plurality of places, or all of the bristle bundles may be replaced with a plurality of such bristle bundle groups. It is not always necessary to provide at the front end portion in the longitudinal direction.
[0021]
【The invention's effect】
According to the toothbrush of the present invention, it is possible to improve the effect of removing plaque and to perform efficient tooth brushing while maintaining a good feeling of use. Further, by arranging the bristle bundle group occupied cross-sectional area of 5 mm ² 100 mm ² in the longitudinal direction the tip portion of the bristle base, plaque against inner and fissures of the posterior teeth particularly predilection for difficult and caries cleaning Can be effectively removed and cleaned.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main part of a toothbrush according to an embodiment of the present invention.
2A is a plan view and FIG. 2B is a side view showing a main part of a toothbrush according to an embodiment of the present invention.
FIG. 3 is a plan view showing a main part of a toothbrush according to another embodiment of the present invention.
FIG. 4 is a plan view showing a main part of a toothbrush according to still another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Toothbrush 11 Bristle 12 Small-diameter bristle bundle 13 Medium-diameter bristle bundle 14 Flocking table 15 Neck part 16 Bristle bundle group root part 17 Bristle bundle group 18 Medium-diameter bristle bundle root part 19 Central part 20 Outer part 21 Intermediate part X Toothbrush length direction

Claims (4)

Occupied cross-sectional area is a toothbrush bristle bundles group 5 mm ² 100 mm ² were planted in flocking stage,
The rigidity of the bristle bundle located in the outer peripheral part is higher than the rigidity of the bristle bundle located in the central part of the occupied cross section of the bristle bundle group ,
A toothbrush in which the tip height of the bristle bundle located in the outer peripheral portion is higher than the tip height of the bristle bundle located in the center portion of the occupied section of the bristle bundle group . The toothbrush according to claim 1, wherein the bristle bundle group is disposed at a longitudinal tip portion of the flocking table. The toothbrush according to claim 2, wherein the bristle bundle group is inclined toward the front end side in the longitudinal direction. The bristle bundle group is planted on a flocking table as an aggregate of small-diameter bristle bundles, and the small-diameter bristle bundle located in the outer peripheral part is more rigid than the rigidity of the small-diameter bristle bundle located in the central part of the occupied section of the bristle bundle group. The small-diameter bristle bundle located in the intermediate portion between them is provided, and the rigidity of the small-diameter bristle bundle increases stepwise from the central portion toward the outside. The toothbrush of any one of 3 .

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