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toothbrush

A toothbrush and hair-planting technology, which is applied in the field of toothbrushes, can solve the problems of insufficient strength of the head of the hair-planting strength, etc., and achieve good operability in the oral cavity

Active Publication Date: 2020-03-24
LION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, in the case of a flat wire type hair transplant in which a metal flat wire is driven into a head made of resin to fix the bristles, the strength of the hair transplant and the bending strength of the head may be insufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0117] (Examples 1-5, Comparative Examples 1-7)

[0118] The toothbrushes of Examples 1-5 and Comparative Examples 1-7 in which the neck part 120 was formed were produced according to the specification shown in said [Table 1]. The width, length, thickness, and shape of the head and the handle are all the same. Injection molding PP resin to obtain Figure 3-4 The integral molding of the head and the handle body described in (from the front end of the head to the handle body, the arrangement of the hair-planting holes is 3 holes × 1 row, 4 holes × 6 rows, 3 holes × 1 row. The width of the head 10mm, length 25mm, thickness 3.0mm. The length of the handle body is 110mm. The length of the neck is 48mm). A bundle of tapered bristles (7.5 mil) formed by filaments made of PBT was implanted into the head by flat wire bristle implantation to make a toothbrush.

[0119] In each example, the position where the width of the neck is the smallest, and the values ​​obtained by D / W in the p...

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Abstract

To provide a toothbrush with a thin head and good operability. The toothbrush has a head (110) arranged on the front end side and a hair bundle implanted on the hair-planting surface (111), a neck (120) extending to the rear end of the head, and a rear end extending to the neck. Set the handle portion (130). The thickness of the head is 2.0-4.0mm. The neck is formed so that the minimum width in the direction parallel to the flocking surface and perpendicular to the length direction of the handle is 3.5 mm or more and 4.5 mm or less, and the width is constant or gradually from the position of the minimum value toward the rear end side. get bigger. Assume that from the position of the minimum value in the neck, the width at the position that is parallel to the flocking surface and deviates from the rear end side by 10mm is W mm, and the thickness in the direction perpendicular to the flocking surface is D mm, by D / The obtained value of W is 0.7 or more and 2.5 or less, and the deflection coefficient M (mm 4 )=W×D 3 165mm 4 Above, 625mm 4 the following.

Description

technical field [0001] The present invention relates to toothbrushes. [0002] This application claims priority based on Japanese Patent Application No. 2016-045368 filed in Japan on March 9, 2016 and Japanese Patent Application No. 2016-211879 filed in Japan on October 28, 2016, which are incorporated herein by reference its content. Background technique [0003] In Patent Documents 1 to 3, toothbrushes in which the thickness of the head is reduced are proposed from the viewpoint of intraoral operability and the like. When the thickness of the head is made thin, there are problems such as a decrease in strength. Therefore, a high-strength resin such as polyacetal resin (POM) is used. In particular, in the case of a flat wire type flocking in which a metal flat wire is driven into a head made of resin to fix bristles, the flocking strength and the bending strength of the head may be insufficient. [0004] [Prior art literature] [0005] [Patent Document] [0006] [Pate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A46B5/00A46B9/04
CPCA46B9/04A46B5/00A46B2200/1066
Inventor 金丸直史龟井诚一
Owner LION CORP