JP2010188102A - Toothbrush for polishing row of teeth interposingly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toothbrush with a bunch of bristles planted inclined toward the center line of a toothbrush body, the toothbrush (hereinafter synchro-toothbrush) simultaneously polishing the three sides of a row of teeth comprising the occlusion side, the lip (front) side, and the tongue (reverse) side. <P>SOLUTION: While an angle θ is the angle at which a bunch of bristles is desirably inclined inward in bristle-planting base materials 1, 1' to be continuously provided right and left, the angle is preliminarily formed between the parallel faces of a parting line and both planting faces 2, 2' of a die in a primary molding, thereby enabling bristle planting pins to be vertically pulled out. Then, in a secondary molding, the same material as the primary molding material or a compatibilizing soft plastic is filled between both bristle-planting base materials and in a gap 3 of the neck part in the molding so that both the bristle-planting faces form one surface. Thus, bristle planting is performed in a manner that desired rows of spaces are provided inside the bristle rows. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a toothbrush (hereinafter referred to as a full periodontal toothbrush) that can simultaneously polish the meshing surface of the dentition, the lip (front) side, and the tongue (back) side of the toothbrushes used by the majority of people every day. The toothbrush to which the hair bundle is inclined to the center line side of the toothbrush housing.

  All periodontal toothbrushes can be broadly classified as follows: the central row of the flocks of a normal toothbrush is shortly planted, the outer row is long and the flocked base material is divided into two or three, and each flocked surface is flat. In some cases, the toothbrush housing is molded in the state of being arranged in the shape, and after flocking, each flocked substrate is tilted inward and bonded or fixed. The latter document is given below.

  A toothbrush characterized by providing side brush bases on both sides of the central toothbrush base, variable-angle coupling with an elastic band, and flocking to the central toothbrush base with the same or longer length on the side toothbrush base (patent Reference 1) JP 2001-346633 A

  Two flocked base materials are provided on both sides of the tip of the toothbrush gripping part with an ABS resin, which is easily dissolved in a solvent, with a V-shaped groove having a very thin bottom, and after flocking, both sides of the V-shaped groove are brought together to inject the solvent. Toothbrush characterized by welding (Patent Document 2) Japanese Patent Publication No. 63-503276

  The two examples described above improved the drawbacks such as requiring manual assembly and having a flocking surface of 25 mm or more. The two flocked base materials each having two rows of flocking holes were connected with a thin-walled connecting band. First, it is molded with a hard thermoplastic synthetic resin, the middle two rows are short and the outer row is long, and the two flocked surfaces are fixed to a jig so that they are about 150 ° to 160 °. The filler of the present invention, which is filled and fixed by injection molding with a soft synthetic resin material of the same quality as the primary molding material or a compatible material between the flocking base material and the gap portion of the neck portion, is polished across the dentition. There is a toothbrush. (Patent Document 3) Japanese Patent No. 4143882

  In Patent Documents 1 and 2, after brushing the teeth, there are residual wrinkles and portions that do not dry for a long time in the central groove portion of the flocked base material, the overlapping parts of the assembly parts, etc., but the toothbrush according to Patent Document 3 is also unsanitary. As a result, it was revealed that the remaining wrinkles stay in the shallow groove at the center of the flocked base material, which is rarely opened at 160 ° during use of the monitor. Because of this, the next time the toothbrush is used, the propagation of germs proceeds at a high speed even if it is not visible, so as a toothbrush manufacturer, the toothbrush flocking base material has slight irregularities that retain residual wrinkles. Think that there should not be.

  Toothbrush manufacturing methods currently in use, including all periodontal toothbrushes, are all manufactured by injection molding of a rigid thermoplastic synthetic resin with the gripping part, neck part and flocking base part integrated. The flock hole is formed by removing a flock hole pin provided perpendicular to the parting line (hereinafter referred to as P / L).

  In the present invention, for the reasons described above, it is required to plant a flock of flocks inclined inward by about 10 ° on one flat flocking material without reducing the function of Patent Document 3.

  If you want to make the flock holes inclined by the manufacturing method in paragraph 7, it is possible to manufacture a mold up to about 4 °, but if you want to tilt it further, it is impossible to produce it as it is, so the flocked base material is 2 Dividing into three or three parts, with the flocked surfaces arranged in one plane parallel to P / L, pulling out the flocking hole pins vertically to form a toothbrush housing, flocking, and then assembling and fixing by an appropriate method The two or three flocked surfaces must be bent in any case, and the remaining wrinkles stay in the portion.

Means for Solving the Invention

  FIG. 4 is a side view of the toothbrush according to the invention viewed from the head side, and the flocked hair bundle is represented by an angle θ inclined to the center side of the body about 10 ° with respect to the vertical line of the flocked surface. On the other hand, in the primary molding for constructing the skeleton, the flock holes must be perpendicular to P / L as shown in FIG. Further, the two flocked surfaces must be one plane as shown in FIG. In order to satisfy these requirements, as shown in FIG. 2, an angle θ inclined between each flocked surface and a plane parallel to P / L is given, and the angle formed by both flocked surfaces is 180 °. When the primary molding is performed as + 2θ and the void portion 3 between the neck portion in FIG. 1 and the both flocked base materials in FIG. 2 is filled and molded by secondary molding, the flocked base material in FIG. 3 is obtained. Next, in order to obtain a space row & in the flock row as shown in Fig. 4, the central flock row is shortened and the outer flock row is long, and the thickness, length, and tip of the flock are dentally determined. What is necessary is just to select a shape etc.

The invention's effect

  When you brush your teeth with the toothbrush of the present invention, the operation is extremely simple compared to general toothbrushes, the entire tooth surface can be polished efficiently in a short time, and at the same time, cleaning of the periodontal pocket and gingival massage can be effectively performed, Effective in preventing tooth decay and periodontal disease.

  The usage is so simple that it is easy to understand without guidance from the user, and it is difficult to disengage from the dentition during use, so it can be used by infants and those who need care.

  The shape of a flocking base material of an ordinary toothbrush is fixed to a shape having a width of about 10 to 12 mm, a length of 15 to 25 mm, and a thickness of about 5 mm through a thin neck at the tip of the gripping part. . Without changing the shape and size greatly, it is preferable to change only the method of flocking the flock to a shape having a flock that is tilted by about 10 ° toward the center side of the toothbrush housing. .

2 is prepared, and a mold capable of taking a large number of toothbrush housings as shown in FIG. 1 is prepared, whereby 2 toothbrush housings obtained by a thermoplastic synthetic resin injection molding method are prepared. Next, the mold is transferred to a molding die, and the gap 3 and the neck portion between the two flocked base materials are filled and molded with the same material of the casing molding or a compatible soft thermoplastic synthetic resin as shown in FIG.

  Next, using a flocking machine, a filament of 3 mils in the middle two rows was implanted to a length of about 5 mm of the exposed portion, and one end of about 5 to 7.5 mils in thickness was finely processed on the outer row. If the hair is planted so that the finely processed side is 12 mm and the other end is 8 mm, there is no dent in the flocked surface, and the entire flock is tilted toward the center of the toothbrush case by about 10 °. A toothbrush having a gap row α to be polished with a tooth row sandwiched therein is mass-produced.

  The top view of the toothbrush housing after the primary molding showing the embodiment of the present invention   The flocked base material seen from the AA cross-section side in FIG.   Flocked base material, side view seen from the tip of toothbrush housing after secondary molding   Fig. 3

1 1 ′ Flocking substrate 2 2 ′ Flocked surface θ Angle formed by the vertical line of the flocked substrate and flocking α Flocking gap row

Claims (2)

  In a hand brushed toothbrush and an electric toothbrush that reciprocates or vibrates, the two flocked base materials that are connected to the left and right from the gripping part through the neck part are the angle θ between the vertical line of the flocked surface and the flocked bundle required when the toothbrush is completed. Is preliminarily applied between the parallel surface of the parting line and both flocked surfaces, and is first molded with hard thermoplastic using a mold in which flocking holes are provided perpendicular to the parting line, and then for secondary molding. The molds are filled with the same material as the primary molding, or with a compatible soft thermoplastic so that the left and right flocked surfaces are in one plane. Toothbrushes that are brushed across a long row of teeth.   In a hand-brushed toothbrush and an electric toothbrush that reciprocates or vibrates, the two flocked base materials connected to the left and right from the gripping part through the neck part have an angle θ formed by the vertical line of the flocked surface and the flocked bundle required when the toothbrush is completed. Pre-moulded between the parallel surface of the parting line and both flocking surfaces, and primary molding is performed with hard thermoplastic using a mold in which flocking holes are perpendicular to the parting line, the center row is short and the outer row is short After long planting, the flocked part can be stored, and the left and right flocked surfaces are in one plane, and the gaps in each part are secondary with the same material as the primary molding, or a compatible soft thermoplastic A toothbrush that polishes by filling and filling a tooth row.

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