Toothbrush

Abstract

A toothbrush which is compatible with various functional appeals of a toothbrush, has an appeal effect-exhibiting appearance, and is high in degree of design freedom. The toothbrush comprises a head unit (12) having a plurality of tuft holes (16) provided in its head surface (12a), wherein a brush bristle bundle (13) is folded into two and a wire (15) held between them is driven into the tuft hole (16), whereby the bristle bundle (13) is planted into the tuft hole (16). A bristle bundle group (20) constituted of at least three bristle bundles (13) is provided on the head surface (12a) of the head unit (12), and the direction of a wire (15) in each of bristle bundles (13) constituting the bristle bundle group (20) is set to a direction in which one enclosed area is sectioned by the extension line of each wire (15) or a direction in which an area held between the extension lines of wires is sectioned.

Description

technical field [0001] The invention relates to an improvement of a toothbrush, which folds a bundle of bristles into two and clamps flat wires therebetween and plants them in hair-planting holes. [0002] This application claims priority based on Japanese Patent Application No. 2006-356539 for which it applied in Japan on December 28, 2006, and uses the content here. Background technique [0003] As a basic function of the toothbrush, it has cleaning effect and massage effect in the oral cavity. In order to improve the basic functions of toothbrushes, interdental penetration, cleaning feeling, massage performance, etc. have been added in the past. In order to achieve high added value of such a toothbrush, it is generally effective to combine the arrangement and shape of the hair-planting holes, the type and shape of the bristles, the cut shape of the bristle bundles, and the like in a complex manner. [0004] However, when adopting the flat wire tufting method in which th...

AI Technical Summary

Problems solved by technology

[0004] However, when adopting the flat wire tufting method in which the bristle bundle is folded into two, and a detachment-preventing member called a flat wire is sandwiched between them and fixed in the tufting hole, in order to ensure the strength of the brush head, it is necessary to The distance between adjacent tufting holes and the distance from the edge of the brush head to the outermost tufting hole are guaranteed to be more than specified, and there is a limitation in realizing the complex pattern arrangement of the tufting holes

Moreover, even when combining a plurality of tufting holes with different shapes, types and shapes of bristles, and cutting shapes of bristle bundles, the tufting process is divided into multiple times, and there are many problems in terms of production efficiency and cost.

Images