Battery powered motor system for low power application

Inactive Publication Date: 2006-09-14
MOSWAY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0007] It is the object of the present invention to overcome or substantially ameliorated at least one of the above disadvantages and/or more generally to provide an improved low power article of motion

Problems solved by technology

While producing high rotational speed and high torque, DC motors suffer from high current drain, especially when obstructed or stalled.
While avoiding the drawbacks of a DC motor based solution, this electro-magnet based sol

Method used

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  • Battery powered motor system for low power application
  • Battery powered motor system for low power application
  • Battery powered motor system for low power application

Examples

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Embodiment Construction

[0023] Referring initially to FIG. 2 of the drawings, there is shown a first article of motion embodying the invention in the form of a dancing ballerina for decoration, which comprises a ballerina FIG. 21 driven by a two-phase step motor 29 to turn on a base 39 resembling a stage. The step motor 29 has its output shaft 38 connected to an input gear 26 of an intermediate gear train 20. The output gear 27 of the gear train 20 has a shaft 22 onto which the ballerina FIG. 21 is mounted.

[0024] A child trying to stop a ballerina figure driven by a geared-down DC motor might suffer injury because of the heavy torque present, or the toy figure might be broken.

[0025] In a step motor based solution, the torque is much lower and neither the child nor the toy figure will be hurt in the event of jamming.

[0026] The step motor 29 receives control signals from circuitry 30 powered by battery or batteries 31. The gear train 20, the step motor 29, the circuitry 30 and the battery 31 are housed in...

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Abstract

An article of motion such as a toy has moving parts that are motivated slowly and with low torque by an electronic timepiece movement.

Description

[0001] The present invention relates to toys, playthings or premium products such as electronic desktop decorations that produce a relatively slow and low-torque movement. BACKGROUND OF THE INVENTION [0002] There are classes of product in which a slow motion is desired, for example to mimic life-like movements (the limb articulation or gestures of a doll, the opening and closing of eyelids, or human facial expressions). There exist numerous prior inventions that meet the challenge with heavily geared-down DC motors, complicated mechanical contraptions, electromagnets, air bags or combinations thereof, to produce such movements. [0003] DC motors are widely employed in the toy industry to induce toy motions, as in battery operated toy cars or animated figures. While producing high rotational speed and high torque, DC motors suffer from high current drain, especially when obstructed or stalled. For example, U.S. Pat. No. 4,695,016 to S. Worack (1987) described a system that used a DC m...

Claims

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Application Information

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IPC IPC(8): A63H29/22
CPCG09F19/02
Inventor FEKETE, FERENCAU, MING KITSE, CELEMENT CHIU SINGLEE, KENNY CHI KENTANG, CHI KEUNGMAK, MAN KEUNG
Owner MOSWAY SEMICON
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