Toothbrush, toothbrush head and tooth cleaning bristle

Abstract

The present invention relates to a tooth cleaning bristle which is formed as a monofilament and has a generated surface with a structured profile, preferably shaped like a longitudinal groove which, in the circumferential direction, has alternate projections and depressions. The invention also relates to a toothbrush head with a bristle support to which at least one such tooth cleaning bristle is attached and, finally, to a preferably electric toothbrush with such a toothbrush head. In order to be able simultaneously to satisfy the diverse requirements of a tooth cleaning bristle, the present invention envisages a special profile of the generated surface of the tooth cleaning bristles which makes it possible to fill the bristle support easily, and which prevents the bristles which are brought together in a bunch from interlocking and yet ensures an intensive cleaning action on the generated surface side. Thanks to the profile, the circumference of the tooth cleaning bristle has a specific relationship to the cross section surface of the bristle. According to the invention, the tooth cleaning bristle which is formed as a monofilament has a profile on the generated surface side which is designed such that the relationship of the circumference of the generated surface to the cross section surface of the tooth cleaning bristle is in the range of 30 mm<-1> to 50 mm<-1>. The generated surface of the tooth cleaning bristle is thus significantly larger compared to a circular cylindrical bristle with a comparable cross section surface, and so the cleaning action on the generated surface side improves accordingly, and toothpaste can better stick to and come off the tooth cleaning bristles on the generated surface side. Nevertheless, despite the profile on the generated surface side, the tooth cleaning bristle is still able to be attached to a suitable bristle support in the anchor connection method.

Description

technical field [0001] The invention relates to a toothbrush bristle which is formed as a monofilament and has an outer surface with a preferably longitudinal groove-shaped structured profile with elevations and depressions alternating in the circumferential direction. The invention also relates to a toothbrush head with a bristle carrier on which at least one such toothbrush bristle is fastened, and finally to a preferably electric toothbrush with such a toothbrush head. Background technique [0002] The bristle tufts of toothbrushes conventionally use substantially cylindrical toothbrush bristles, wherein in particular cylindrical bristles are known, but also cylindrical shapes with a base area other than circular. In addition to cylindrical toothbrush bristles with triangular, quadrilateral or polygonal cross-sections, toothbrush bristles with complex shapes on the housing surface, such as toothbrush bristles with a star-shaped or cross-shaped cross-section, have recently...

AI Technical Summary

Problems solved by technology

In addition, bundled bristles with this cross-section are easy to hook

Toothbrush bristles of this shape can only be fixed to the bristle carrier of the toothbrush head with great difficulty

In particular the toothbrush bristles can no longer be turned in a U-shape without any problems, making it difficult to fix with anchor plugs

In connection with this, the easy-to-handle toothbrush bristles with a polygonal, in particular square or hexagonal, cross-section without concavity on the outer surface have a further disadvantage with regard to the toothpaste accommodating on the outer surface of the bristles

A similar situation applies to cylindrical toothbrush bristles with a completely unshaped outer surface, which are also less favorable with regard to the implant density

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