Especially, is installed elastically in the housing and the said housing by the spring gear, this invention, in regard to the electromotive toothbrush, is connected by the drive section and the said drive section which inside plane surface of one which crosses the longitudinal direction axis of the said toothbrush desirably motion it can exercise at least with aspect of the vibration, in order motion of drive to transmit to the brush head, regards the stock section of the electromotive toothbrush which possesses with the transmission component which functioning is done. This invention, the movement of washing of the brush head of the toothbrush which is formed direction of the drive motion which the drive section which the suspension is done elastically is formed, therefore as the result, especially in order to possess the amplitude which differs in the direction where the above-mentioned drive motion differs, proposes that it controls intend. According to this invention, in order to install the above-mentioned drive section elastically in the above-mentioned housing, we have possessed the spring constant which differs in the direction where two where the above-mentioned spring gear which functioning is done, inside plane surface of the above-mentioned motion of the above-mentioned drive section is desirable and extends mutually perpendicularly differs, therefore drive motion of above-mentioned drive section, has the amplitude which differs to these directions.本発明は、電動歯ブラシに関し、とくには、ハウジングと、該ハウジングにばね装置によって弾性的に取り付けられ、好ましくは該歯ブラシの長手方向軸を横切る少なくとも1つの運動の平面内で振動の様相で運動できる駆動部と、該駆動部に連結され、駆動の運動をブラシ・ヘッドへと伝達するように機能する伝達部材とを具備する電動歯ブラシの手持ち部に関する。本発明は、弾性的に懸架された駆動部の生成する駆動運動の方向、したがって結果として生成される歯ブラシのブラシ・ヘッドの洗浄の動きを、とくには上記駆動運動が異なる方向において異なる振幅を有するように、意図的に制御することを提案する。本発明によれば、上記駆動部を上記ハウジングに弾性的に取り付けるように機能する上記ばね装置が、上記駆動部の上記運動の平面内の好ましくは互いに直角に延びる2つの異なる方向において、異なるばね定数を有しており、したがって上記駆動部の駆動運動が、これらの方向に異なる振幅を有する。
