Gear and rack tooth disengaging preventing mechanism, lifting device and lifting kitchen ware

Abstract

A gear and rack tooth disengaging preventing mechanism comprises a rack, a gear and a load, wherein the rack is arranged on the work plane and is static relative to the work plane, the gear is engagedwith the rack and controlled by a motor to roll along the rack, one end of the load is arranged on the motor, and the load is used for being driven by the motor to move along the rack. A limiting assembly is further included, one end of the limiting assembly is arranged on the motor and synchronously moves with the motor, and the other end of the limiting assembly is in sliding connection to thework plane so that the motion of the gear relatively away from the rack is limited. In the scheme, when the gear moves along the rack, the gear is engaged with the rack, pressure is transmitted to therack, the rack applies counter acting force to the gear, and consequently the gear has the motion tendency for disengaging from the rack. The limiting assembly limits the distance between the motor and the work plane, and the limiting motor is used for stopping rack overturning and rack disengaging.

Description

technical field [0001] The invention relates to the technical field of kitchen utensil structure, in particular to a mechanism for preventing gear and rack from coming off, a lifting device, and a lifting kitchen utensil. Background technique [0002] Rack and pinion is a common mechanical transmission structure, and a conventional rack and pinion transmission mechanism includes a motor, a gear disposed at the output end of the motor, and a rack meshed with the gear. When the above-mentioned transmission mechanism is working, the motor is fixed on a preset working plane, and the rack is controlled by the displacement of the gear relative to the working plane to output power. [0003] If the rack is fixed on the working plane, when the motor moves along the direction of the rack relative to the working plane with the rotation of the gear, the load is connected to the motor, and the motor drives the load to move. [0004] However, due to the interaction force between the gear...

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