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Brush head for electric toothbrush

An electric toothbrush and brush head technology, applied in the fields of dentistry, cleaning teeth, medical science, etc., can solve the problems of poor response to mechanical wear and damage to the gums.

Inactive Publication Date: 2010-07-14
TRISA HLDG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the pointed bristles react poorly to mechanical abrasion at the tip
When the mechanical load is too high, the tip of this bristle breaks off and on the one hand it may no longer perform the cleaning action, and on the other hand there is a risk of damage to the gums due to the edges and sharp corners produced during the break.

Method used

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Examples

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Embodiment Construction

[0026] Figure 1a , b shows three teeth 1 in a dentition with a gap 2 between them in side view and top view. An example of a brush head 3 with pointed bristles 5 is given by the remaining figures.

[0027] A small movement along the dentition in the X direction and a slightly greater movement perpendicular thereto, ie in the Y direction in the tooth plane and in the Z direction perpendicular to the tooth plane, are preferably achieved by the tapered filaments 5 . Excessive movements in the X direction should be avoided, since this leads to a high mechanical load on the pointed filaments 5 (whiplash effect). The desired movement of the tapered filament 5 thus extends over the entire width b1 of the interdental gap 2 and over the width b2 and b3 along the tooth flanks 1a, 1b. The width b1 is usually about 2 mm, and the widths b2 and b3 are about 5 mm, respectively.

[0028] In order to achieve a better cleaning action than manual cleaning, the brush head 3 is driven such that...

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Abstract

The invention relates to a brush head (3) of an electric toothbrush, which is provided with a brush hair support (4); brush hair (5, 6) is fixed in the brush hair support (4); and the brush hair moves when the electric toothbrush works. According to the invention, at least part of the brush hair is a variable tip brush wire (5) which is arranged on the brush hair support (4), so that a tip (5a) moves for a given maximum stroke dmax at most when the electric toothbrush works. Therefore, the toothbrush can be prepared through a benefiting way, the toothbrush has better cleaning effect particularly to minimum structures of between teeth and on the tooth surface, and simultaneously the mechanical load and the wear to the variable tip brush wire (5) caused thereby are minimum. The invention also relates to the electric toothbrush and a method for manufacturing the brush head (3).

Description

[0001] This divisional application is a divisional application based on the Chinese patent application with the application number 03826348.3, the application date being April 22, 2003, and the title of the invention being "brush head for electric toothbrush". technical field [0002] The invention relates to a brush head for an electric toothbrush, an electric toothbrush having such a brush head, and a method for producing such a brush head, which have the features of claims 1 , 15 and 16 . Background technique [0003] Electric toothbrushes conventionally have a handle in which a motor is housed, and a conventional replaceable brush head. A brush head is known, for example, from DE-U 295 20 230, which has a rotatably movable bristle holder. An electric toothbrush is known from WO 01 / 28452, the brush head of which is in vibration. Furthermore, an electric toothbrush is also known, for example from CH 421 049, the brush head of which performs a rotational movement about its...

Claims

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Application Information

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IPC IPC(8): A61C17/22
Inventor 弗兰茨·菲舍尔彼得·格罗斯
Owner TRISA HLDG AG
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