DE3640898C1 - Toothbrush - Google Patents

Abstract

Toothbrush comprising a bristle head (2) provided with bundles of bristles which are set perpendicularly into a flat bristle mounting, and a handle (4), connected to the head (2) by an elastically deformable connecting section, which permits the head (2) to bend under pressure in a plane perpendicular to the bristle mounting. The brush is characterized by the fact that the flexible connecting section (6) is so formed that the head (2), when subjected to a pressure of 300 g, is deflected laterally between 0.6 and 2.5 cm in any plane in relation to the handle (4).

Description

The invention relates to a toothbrush according to the preamble of the main claim.

To prevent damage to the enamel when brushing your teeth to avoid in the tooth neck area and the gingival margin, you have the toothbrushes either with more compliant or softer bristles provided in their overall cleanliness effect are insufficient, however, or according US-PS 45 20 526 between the brush head and handle provided an elastic connecting part, the so was trained that the brush head against the Handle in a perpendicular to the bristle bed Level evades under load, namely under load from 100 to 300 g by about 6 mm or at higher loads by a larger amount corresponding to an angle up to about 30 °. To this flexibility in the vertical To enable level and in particular to complete Stiffness in the plane horizontal to the brush bed to get, you have the connecting part between brushes head and handle either the same in thickness permanent latitude reduced or in the Connecting part a slot or elongated through refraction arranged in a parallel to the bristle bed Plane provided so as to dodge in a vertical to allow existing level to the bristle bed.

Such toothbrushes with a thickness of the connector The reduced area is for longer Not suitable for use because this area breaks easily; Toothbrushes with a slotted or openwork The connecting part can be sprayed opposite conventional toothbrushes are only relatively complex produce; toothpaste also collects in the slot  remnants that become unhygienic after just a week Deposits and dirt accumulations lead or only are difficult to clean. Furthermore are such toothbrushes for modern toothbrushing techniques not suitable.

In modern dentistry, brushes are recommended head with the bristle ends forming the work surface near the gingival margin on the tooth surface start and when the bristles are inclined towards an essentially small circle on the gingival margin vibrating executing up and down brush movements to carry out so deposits in between teeth avoid space and inflammation of the gingival margin epi to prevent thels.

The invention has for its object a tooth to propose the brush, even when the bristles are tilted towards Gingiva hem Force peaks when brushing is loaded balances head and thus in particular for the modern toothbrushing technology mentioned above nik also for vibration technology according to Dr. BASS or according to the CHARTERS technique.

To solve this problem, a toothbrush is therefore used proposed according to the characteristics of the main claim, where particularly suitable embodiments in the Subclaims are mentioned.

Surprisingly, it has been shown that with one flexible brush head ins especially with flexibility corresponding to one Dodge level of 1 to 2 cm or about 20 ° a very Even cleaning of the teeth without irritation the gingival margin is made possible and that the user  performing a slightly circular motion is facilitated and furthermore that for right or left Hands less thoroughly cleaned area of the right or left canine area becomes lighter and consequently can also be reached more thoroughly; the same applies to the distal area of the last molars and for the lingual surfaces of all teeth under particular Taking into account the extremely difficult to achieve Lower jaw anterior tooth area, which is particularly tartar is due.

Because of the preferred handle formation facilitated setting angle of the bristles of the bristles penetrate about 45 ° by means of the small ones circular motion in the interdental niches and into the sulcus and contribute to a good cleaning particularly vulnerable sections of teeth.

Also with the recently proposed vibration technology after Dr. BASS are those provided according to the invention Toothbrushes are particularly advantageous because they are made by bristle part that deflects elastically in every plane the force peaks at a load of 300 to 500 Compensate pond or more and for a very much the same provide more moderate power distribution.

Even with the STILLMANN technology, which is vertical rotary movement of the bristle work surface of the gingiva to the tooth (red / white method) at the same time prompt rotation of the brush about its longitudinal axis, shows the toothbrush according to the invention of Advantage, since they have a given movement designed balancing run.

The toothbrush according to the invention can be easy to produce by injection molding and is in Connection part between bristle bed and handle permanently resilient.  

In the following the invention with reference to the Drawing will be explained in more detail. It shows

Fig. 1 is a side view of the toothbrush according to the invention,

Fig. 2 is a plan view of the inventive toothbrush,

FIGS. 3a and b are sections on the plane III-III through the handle of the toothbrush according to the Invention.

The toothbrush consists of a brush head 2 , which is connected to the handle 4 via the flexible connecting piece 6 . Because the connecting part 6 has a smaller cross section than the handle and the latter preferably has a square cross section with the sides drawn in, the handle 4 is rigid, so that the flexibility or the evasion α, β of the brush head is achieved by the elastic intermediate part. The deviation in the respective plane is determined as the distance that the middle part of the bristle bed has from the starting position. It is in a range of about 0.6 to 2.5 cm and preferably 1.0 to 2.0 cm.

The particular cross-sectional shape of the handle 4 according to Fig. 3a or 3b is particularly advantageous in a resilient brush head to keep the brush head in the ge desired position and ergonomically useful, a cross section according to Fig. 3b is preferred because it thereby an inclined placement of the bristle surface is made possible, both by Dr. BASS as well as the STILLMANN technology.

In a further preferred embodiment, the outside bristle bundle 3 is colored differently from the other bristle bundles, in order to make it particularly clear to children, when brushing their teeth, to avoid evading, at least in the plane lying parallel to the bristle bed.

Claims (5)

1. Toothbrush consisting of a brush head with bristle bundles arranged vertically in a flat bristle bed and a handle which is connected to the brush head via an elastically deformable connecting part, so that the brush head evades in a plane perpendicular to the bristle bed under load, characterized in that the Elastic connecting part ( 6 ) is designed so that the brush head ( 2 ) with a load of 300 g in all planes sides with respect to the handle ( 4 ) by 0.6 to 2.5 cm. 2. Toothbrush according to claim 1, characterized in that the brush head ( 2 ) with respect to the handle ( 4 ) in all planes at a load of 300 g by 1 to 2 cm. 3. Toothbrush according to claim 1 to 2, characterized net that the bristles are rounded at their outer end are.   4. Toothbrush according to claim 1 to 3, characterized in that one or more of the bristle bundles ( 3 ) arranged at the outer end of the bristle bed are colored differently from the bristle bundles lying further to the handle ( 4 ). 5. Toothbrush according to claim 1 to 4, characterized in that the cross section of the handle ( 4 ) is square with inwardly curved sides and that connect the corner points of the square, the straight line parallel and perpendicular to the plane of the bristle bed ( Fig . 3a) or an angle of 45 ° to this (FIG. 3b).