Brush section for an electric toothbrush

Details Brush section for an electric toothbrush Brush section for an electric toothbrush

A - Human Necessities

61

C

A61C 17/40 (2006.01)

Patent

CA 2201469

The invention is directed to a brush section (1) for an electric toothbrush which includes a mounting tube (2) in which a shaft (7) rotary about a longitudinal axis (3) is received. Further, the brush section (1) includes a bristle carrier (11) from which bristles (15) extend in the direction of a brush axis (14). The bristle carrier (11) is rotary about a transverse axis (19) by means of a bearing pin (21). By means of in particular a tapered disk (24), the brush axis (14) and the transverse axis (19) define between them an angle (28) departing from an apex (29). In operation of the electric toothbrush, the bristle carrier (11) performs a nutating motion about the transverse axis (19). This effects a revolving approaching/receding motion of the free ends of the bristles (15) resulting in an improved cleaning action on a user's teeth.

Cette invention concerne une brosse à dents électrique (1) constituée d'un manche tubulaire (2) au centre (3) duquel tourne une tige (7), d'une tête (11) portant des soies (15) disposées parallèlement à l'axe (14) de la tête. Une broche (21) fait tourner la tête (11) autour d'un axe transversal (19). Un disque de section conique (24) placé entre le manche et la tête de la brosse crée entre l'axe de la brosse (14) et ledit axe transversal (19) un angle (28) prenant son origine au point (29). La tête (11) de la brosse oscille autour de l'axe transversal (19), imprimant aux soies (15) un mouvement d'avance et de recul qui améliore le nettoyage des dents.

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