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Drive train assembly for a personal care device

A technology of power transmission system and personal care, applied in the field of power transmission system devices of personal care equipment, can solve the problems of low driving efficiency, lag between driver responses, and rigid installation.

Active Publication Date: 2019-04-26
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these spring devices are prone to failure due to conditions such as fretting fatigue, where repetitive forces at the interface of the clamped ends of the spring cause stress on the spring and clamp
Over time, this may cause one or more components to fail
In addition, spring devices with springs mounted at both ends require many different parts, increasing component cost, manufacturing cost and production time
[0005] Node mounts can also be unreliable or unpredictable, as the mount can be too rigid or it can lead to hysteretic behavior of the actuator, where there is a significant lag between the force applied to the actuator and the actuator's response
Hysteresis results in very inefficient actuation and complicates any magnitude and force sensing performed by the system

Method used

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  • Drive train assembly for a personal care device
  • Drive train assembly for a personal care device
  • Drive train assembly for a personal care device

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Embodiment Construction

[0029] The present disclosure describes various embodiments of drivetrain components for electric personal care appliances. More generally, applicants have recognized and understood that it would be beneficial to provide a more efficient and stress resistant non-node mounted spring assembly. Thus, systems described or otherwise contemplated herein provide a personal care appliance, such as an electric toothbrush or shaver, having a drivetrain spring assembly comprising non-node mounted V-shaped or U-shaped Shaped spring assembly, wherein the spring includes X-shaped spring hinges at both ends.

[0030] A specific target for using the embodiments and embodiments herein is to provide personal care devices such as Philips Sonicare TM Toothbrush (manufactured by Koninklijke Philips Electronics, N.V.), which provides a drivetrain spring assembly, however, this assembly can also be used in many other personal care devices, including but not limited to shavers, skin cleaners, and ot...

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PUM

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Abstract

A drive train assembly (200) for a personal care device (10), comprising a torsion spring (210) suspended between a first end mount (220) and a second end mount (230), the torsion spring comprising afirst end mounted to the first end mount and a second end mounted to the second end mount, wherein the first and second ends of the torsion spring each comprises a cross flexure spring hinge (250, 260).

Description

technical field [0001] The present disclosure generally relates to a personal care appliance drivetrain arrangement having V-shaped springs that do not require node mounting. Background technique [0002] Brushing properly, including the length and coverage of your brushing, helps ensure long-term dental health. People who don't brush their teeth often or don't brush enough can experience many dental problems, especially in specific areas or parts of the mouth. In individuals who brush their teeth frequently, even when following a standard brushing regimen, incorrect brushing habits can lead to poor brushing coverage, which in turn leads to inadequate cleaning of surfaces during cleaning sessions. Powered cleaning devices, such as electric toothbrushes, have been shown to greatly increase the efficiency of cleaning sessions. [0003] These powered cleaning devices include electric toothbrushes, shavers, skin cleaners, and similar devices that have a motor, such as a mechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C17/34H02K33/00
CPCA61C17/3418A61C17/34A61C17/3481F16D3/12F16D2121/24F16D2250/0076F16F1/16F16F2226/048F16F2230/0005F16F2232/02F16F2236/08F16F2238/024
Inventor H·M·J·R·索伊默斯J·B·M·索伊滕斯
Owner KONINKLJIJKE PHILIPS NV