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Actuation system for personal care appliance using linear actuators

A linear actuator, personal care technology, applied in the direction of electric components, medical science, dentistry, etc., can solve the problems of expensive, complex vibration resistance/damping system, etc.

Inactive Publication Date: 2008-09-03
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many of these anti-vibration / damping systems are complex and expensive; others do not achieve the desired results

Method used

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  • Actuation system for personal care appliance using linear actuators
  • Actuation system for personal care appliance using linear actuators
  • Actuation system for personal care appliance using linear actuators

Examples

Experimental program
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Embodiment Construction

[0009] Figure 1 shows an embodiment of the drive / actuation system of the present invention. The drive / actuation system, indicated generally at 10, is also shown driving an output shaft connection 12 to which an output drive shaft 14 is secured. In FIG. 1 , the output shaft 14 is shown supported by two spaced apart rotary and linear bearings 16 and 18 , however these are not required by the appliance system. On the free end 15 of the output shaft 14 is mounted a workpiece (not shown), which may be, for example, a toothbrush head or other personal care implement component. The terms “drive assembly” and “actuation assembly” are used interchangeably herein and both are used to refer to system 10 . The device shown and described may be used in personal care appliances such as electric toothbrushes and other small appliances having reciprocating oscillating and / or oscillating motions.

[0010] Drive system 10 includes two linear actuators 20 and 22 . Any pair of linear actuators...

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PUM

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Abstract

The personal care appliance drive system includes a pair of linear actuators (20, 22) capable of operating both in an opposing phase mode or in a parallel (in phase) mode. The system includes a motion converter assembly (64) which converts the opposing phase action of the two linear actuators (20, 22) into a rotational action of an output drive shaft (14) and converts in phase action to a translation motion of the output shaft or to drive another function of the appliance, such as a pump. The motion converter (64), operating simultaneously in an opposing phase mode and in phase modes, produces a complex motion of the workpiece.

Description

technical field [0001] The present invention relates generally to an actuation system for a personal care appliance, such as a powered toothbrush, and more particularly to a desired motion actuation system. Background technique [0002] Many different actuation / drive systems for powered toothbrushes are known, including a variety of mechanical, electromechanical and magnetic configurations. A significant problem with many such drive systems is the vibration and noise of the handle caused by the motion of the drive system. Various forms of damping have been used to reduce this unwanted noise and / or handle vibration. There are also various spring / motor configurations that have been devised in an attempt to counteract vibrations in the handle. However, many of these anti-vibration / damping systems are complex and expensive; others do not achieve the desired results. [0003] Therefore, there is a need for a drive system in which vibration is counteracted or minimized by virt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C1/06A61C17/34H02K7/06
CPCH02K33/00A61C1/06A61C17/34H02K16/00
Inventor W·本宁J·W·佩斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV