Drive for a rotating article, such as a roller, shaft, plate...

Details Drive for a rotating article, such as a roller, shaft, plate... Drive for a rotating article, such as a roller, shaft, plate...

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 31/00 (2006.01) A61L 9/12 (2006.01) F16H 21/18 (2006.01)

Patent

CA 2347672

The invention relates to a drive mechanism for a rotating object such as a roller, shaft, disk or such like, used notably for a fragrance vaporizer, humidifier, air purifier or such like. The drive mechanism is characterized in that it comprises a movably mounted lever (9, 10), a gear wheel (9) which is connected in a non-rotating manner to the rotating object (1) and a lever drive (7) for moving the lever (9, 10) such that it engages and rotates the gear wheel (8). To engage the teeth (22) of the gear wheel the lever has a tip (11, 12). According to the invention said tip (11, 12) has the shape of a tooth and the shape of said tooth and the teeth (22) of the gear wheel (8) as well as the lever drive (7) are configured such that the tooth flanks of the tooth (11, 12) of the at least one lever (9, 10) and the tooth flanks of the gear wheel (8) tooth (22) engaged at any one time roll off on each other during the driving movement.

L'invention concerne un entraînement pour un objet tournant tel qu'un cylindre, un arbre, un disque ou analogue, destiné en particulier à un évaporateur de parfum, à un humidificateur d'air ou à un appareil de purification d'air ou analogue qui présente les éléments caractéristiques suivants: un levier (9, 10) monté mobile, une roue dentée (8) qui est solidaire en rotation de l'objet (1) tournant, et un engrenage à levier (7) servant à produire un mouvement d'engagement du levier (9, 10) dans la roue dentée (8) pour entraîner celle-ci en rotation, ledit levier étant pourvu, pour son engagement dans les dents (22) de la roue dentée, d'une pointe (11, 12). Selon l'invention, la pointe (11, 12) est formée par une dent, la forme de cette dent, la forme des dents (22) de la roue dentée (8) et la forme de l'engrenage à levier (7) étant adaptées l'une à l'autre pour que les flancs de la dent (11, 12) du ou des leviers (9, 10) et ceux de la dent (22) de la roue dentée (8) respectivement en prise passent les uns sur les autres pendant le déplacement d'entraînement.

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