Disclosed is a device 2 suitable for rocking prams, pushchairs or the like. The device comprises a motor 18, an axle 26 connected to the motor, a weight 30 eccentrically connected to the axle, and a speed controller connected to the motor. The speed controller drives the motor to rotate the weight at a set rocking frequency between 2 and 10Hz. The speed controller comprises a speed boost function that increases the speed of the motor above the set rocking frequency for an initial period of operation to overcome the inertia of the weight, with the speed reducing to match the set rocking frequency after the initial period. The speed controller may comprise an adjuster for varying the rocking frequency. The output shaft of the motor may comprise a drive pulley 22, and the weight may be connected to the axle via a driven pulley 24, said driven pulley having a larger diameter than the drive pulley.
A rocking device
2022-06-15
Patent
Electronic Resource
English
Rocking control device for two front wheels rocking vehicle
European Patent Office | 2020
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