JP4143982B2 - Toothbrush that brushes across the dentition - Google Patents

Description

  The present invention relates to a so-called full periodontal toothbrush that can simultaneously polish a meshing surface of a tooth row and three surfaces of a lip side and a lingual side of a toothbrush.

Conventionally, there are a large number of patents and utility model applications relating to all periodontal toothbrushes, most of which are implanted on the inner surface of a U-shape or V-shape formed by three or two surfaces. However, the latest computer-controlled automatic flocking machine currently in use is not capable of automatic flocking such as oblique flocking, except that flocking is almost perpendicular to a flat flocking substrate. In addition, there are a large number of applications that do not describe a flocking method for solving this problem, and it must be said that these are insufficient inventions.
If there are documents of all periodontal toothbrushes capable of computer-controlled flocking, there is a patent application publication Showa 63-503276 Japanese Patent Laid-Open No. 2001-346633, etc. From the disclosure content of these documents, manual welding work and assembly work are required In addition, the width of the brush portions of the products sold in accordance with these technologies is as large as 29 mm and 25 mm, respectively. Also, it looks uncomfortable even in the oral cavity and has not spread.
SUMMARY OF THE INVENTION An object of the present invention is to provide a full periodontal toothbrush capable of producing a toothbrush that can maintain a width of 10 to 12 mm of a toothbrush that has been sold in the past and that can be polished on all three surfaces by only automatic machine work.

As shown in Fig. 4, the conventional method of brushing teeth with a toothbrush is to brush only the end face of the bristles (hereinafter referred to as the end face of the bristles), and this method is followed for all periodontal toothbrushes. Has been.
Human molars grow around 5-6 years old, so-called 6-year-old molars are the largest teeth that grow in their lifetime, and the maximum width is about 12 mm, but the width of the meshing surface of the teeth is It is as narrow as 8cm. The 6-year-old molars are permanent teeth that are permanent and do not change in size for a lifetime. With all periodontal toothbrushes, it is impossible to achieve the purpose by brushing the large teeth only with the end face of the bristles. At the beginning, the three-sided flocked base material was two-sided, the number of flocked rows was four as shown in FIGS. 5 to 14, and the number for the infant before the 6-year-old molars were grown was three. The height of the bristles in the central one or two rows was lowered, and the height of the outer flock row was raised so that the toothbrush did not come off the dentition. Further, it was also found that if rolling was performed at 15 ° to 30 ° as shown in FIG. 2, it was possible to clean both the lingual and lip side surfaces of the dentition and the end surfaces of the brush hair without detachment from the dentition.
FIG. 4 is an explanatory view of the case where the meshing surface is polished with a toothbrush having a bristle height of about 11 mm at the exposed portion of the conventional toothbrush, but the dimension from the tooth surface to the back surface of the flocked base is 15 Since he was in a prone position, he had to open his mouth wider than that to polish the upper and lower mating surfaces. In addition, the side of the lingual side must be polished beyond the dentition, which is cumbersome, and even if it takes a long time to polish it, there is an unpolished portion, which often causes periodontal disease.

FIG. 1 is an explanatory diagram in which the meshing surface of a 6-year-old molar is polished with a toothbrush in which the flocked base material of the present invention is brushed across two dentitions.
FIG. 2 is an explanatory view of rolling by 15 ° from FIG. 1 and polishing.
FIG. 3 is an explanatory view showing a mating surface of a 6-year-old molar with a toothbrush in which the flocked base material of the present invention is brushed across a single dentition.
FIG. 4 is an explanatory view in which the mating surface of a 6-year-old molar is polished with a conventional toothbrush.
FIG. 5 is a front view of a toothbrush in which the flocked base material is polished across two rows of teeth.
FIG. 6 is a front view of a toothbrush in which a flocked base material is brushed across two rows of teeth before flocking.
FIG. 7 is a plan view of a toothbrush in which a flocking base material is brushed across two rows of teeth before flocking.
FIG. 8 is a side view of the toothbrush before the flocking of the toothbrush in which the flocked base material is polished across the two rows of teeth.
FIG. 9 is a cross-sectional view of FIG. 7A-A ′ set in a jig before secondary molding of a toothbrush in which the flocked base material is brushed across two rows of teeth.
FIG. 10 is a front view of the toothbrush before the flocking of the toothbrush in which the flocked base material is brushed across the three rows of flocked teeth.
FIG. 11 is a plan view of a toothbrush before flocking of a toothbrush in which a flocking base material is brushed across a three-row flocked tooth row on one side.
Fig. 12 is a side view of a toothbrush before flocking of a toothbrush that polishes over a three-row flocked tooth row with a flocked base material on one side.
FIG. 13 is a front view of a toothbrush in which a flocking base material is brushed across a three-row flocking tooth row on one side.
FIG. 14 is a front view of a toothbrush that polishes over a four-row flocking tooth row with a flocking base material on one side.
FIG. 15 is a cross-sectional view in which the cross section of the outer row flocked filament is a triangular deformation.
FIG. 16 is a sectional view in which the outer row flocked filament has a square cross section.

The present invention will be described in detail with reference to the accompanying drawings.
To brush three sides of the dentition at the same time, combine two toothbrushes as shown in Fig. 1 and brush the 6-year-old molar or the brush hair side. Since it was found that the width is almost the same as the total width, it is possible to make the width of the toothbrush portion 12 mm or less by making the total number of flocking rows 4 rows, FIG. 1 and FIG. The use state is shown. Next, the production process is described.
In FIG. 7, a brush neck part 4 connected to the grip part 3 is connected to both the flocked base materials 1 and 1 'and the connecting body 2 connecting them, and is made of elastic hard plastic such as saturated polyester. As shown in FIGS. 6 to 8, primary molding is performed by an injection molding method.
The primary molded product is then hung on an automatic flocking machine, flocked to the center two rows of flock holes 5, preferably cut with a clipper into a mountain shape with the highest portion of about 7 mm, and further to the flock holes 6 of each outer row, Preferably, one filament is tapered and one filament is cut to a predetermined length perpendicular to the longitudinal direction. The vertically cut side is the central side of the entire brush, the tapered side is the outer side of the entire brush, and the vertical The side is planted slightly higher than the middle row.
If the cross section of the outer row flocked filament is a regular triangle, a square, or its deformation as shown in FIGS. 15 and 16, the cleaning ability can be further improved.
The half-finished product is then set in a jig so that the angle between both flocked surfaces is about 150 ° to 160 °, and the flocked base materials 1, 1 ', the connecting band 2 that connects them, and the grip 3 The continuous brush neck 4 and the gap 10 indicated by the chain line are compatible with the primary molding material, and the injection molding of the secondary molding is performed with a softer rubber-like plastic.
FIG. 9 shows a cross-sectional view taken along line AA ′ of FIG. 7 of the present toothbrush set in the jig after primary molding and flocking.
In other words, it is characterized by forming the skeleton of this toothbrush by primary injection molding, then flocking, and fleshing by secondary injection molding, eliminating manual assembly and solvent-based adhesive work, and costing by automated machine work Can be reduced and the product can be made uniform.
Since the secondary molding material is rubber-like plastic, it is possible to change the order of flocking and secondary molding to the order of primary molding, secondary molding, and flocking.
As shown in FIG. 4, the height from the tooth surface to the back of the flocked base when the meshing surface is polished with a conventional toothbrush is about 15 mm, whereas in the present toothbrush, FIG. As shown in FIG. 3, since the height is about 10 mm, it can be polished without opening the gap length wide, and the teeth on the opposite jaw of the tooth being brushed do not hit the back of the flocked substrate. Also, between the backs of both flocked bases is a soft rubber-like plastic, which is slightly raised from the back of the flocked bases, so when the mating surface is polished, the teeth on the opposite jaw are Even if it hits the part, impact and impact sound are alleviated.
However, performing injection molding in two steps requires two molds, which increases the cost, so the merit of brushing across the dentition is preserved and the following method can be used to reduce demerits. I took it.
That is, the row of follicle holes shown in FIG. 11 has three rows for infants before the 6-year-old molars grow, and four rows for humans after the 6-year-old molars grow, as shown in FIGS. The flocking that forms the gap row across the dentition is performed, but the method is exactly the same as that of the two flocked base materials, and the difference in whether the flock is inclined inward by 10 ° to 15 ° when completed. And whether or not the impact is absorbed when the mating surfaces are polished.

  A toothbrush that brushes across the dentition on the two surfaces of the grafted base is easy to polish and safe even if used by infants after the 6-year-old molars, the elderly, the physically handicapped, and the care recipients. Yes, the one on the flocked base material can be provided at a low price even if a busy person rushes it quickly, so the possibility of widespread use of all periodontal toothbrushes that could not be popular until now large.

Claims (1)

In a hand-brushed toothbrush and an electric toothbrush that reciprocates or vibrates in the axial direction, the two-sided flocking bases 1 and 1 ′ each having two rows of flocking holes are thinly connected bands 2 and the flocked surfaces are flush with each other. The neck 4 connected to the gripping part 3 is first formed by injection molding with a hard plastic material such as saturated polyester so as to be connected to the continuous connection band 2 while gradually reducing its thickness and width. The middle two rows are planted to a height of about 5 to 7 mm of the exposed portion, the height of the exposed portion of each outer row is planted to the same height as a normal toothbrush, ′ Is fixed to a jig with an angle of 150 ° to 160 °, and the periphery of the brush neck 4 is

The toothbrush which has the row | line | column of the gap | interval which straddles the row | line | column which consists of secondary molding filled and molded by the injection molding method with the same type of soft plastic.

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