Washing machine lid lock with memory wire actuator

A technology of metal wire and memory alloy, which is applied in other washing machines, washing devices, textiles and papermaking, etc.

Inactive Publication Date: 2006-12-20
ARK LES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bimetallic strips can be heated by passing current directly through them or through a PTC resistor connected to a portion of the flat side of the bimetallic strip, which is not suitable for wax actuators

Method used

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  • Washing machine lid lock with memory wire actuator
  • Washing machine lid lock with memory wire actuator
  • Washing machine lid lock with memory wire actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] Referring now to FIG. 1 , a standard top loading washing machine 10 includes a lid 12 which closes to cover a spin basket 14 . A latch bolt 16 may extend downwardly from one edge of the lid 12 to be received by a locking mechanism 18 in the washer 10 housing.

[0044] Referring to FIG. 2 , the locking mechanism 18 may include a housing 20 connected to the housing of the washing machine 10 . Housing 20 is preferably constructed of an electrically insulating thermoplastic to insulate components within locking mechanism 18 as described below.

[0045] The latch bolt 16 extending downwardly from the cover 12 is accessible through an opening in the housing 20 to be received by a pin receiving slot 24 at the periphery of a scraper 26 which rotates about an axis 28 . Tension spring 30 is connected between housing 20 and rotating scraper 26 near pin receiving slot 24 to fully bias rotating scraper 26 in the clockwise direction shown in FIG. 2 before scraper 26 receives pin 16 ...

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PUM

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Abstract

An actuator suitable for a washing machine lid lock employs a shape memory alloy wire indirectly heated by a temperature regulating heater that provides a sliding coupling to the wire and that may be driven, for example, directly by line voltage without the need for temperature regulation circuitry.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of US Patent Application Serial No. 10 / 982,008, filed November 5, 2004, which is hereby incorporated by reference. [0003] Statement Regarding Federally Funded Research or Development [0004] -- technical field [0005] The present invention relates to a lid lock for a washing machine, and more particularly to a memory wire actuator which may be used in this or other applications. Background technique [0006] During the spin cycle of the washing machine, water is centrifugally spun from the laundry by spinning the laundry in a spin basket at high speed. To reduce the possibility of injury to a user, a washer lid that blocks access to the spin basket can be locked in a closed position during the wash and spin cycle. Lid locks used for this purpose are usually designed to keep the lid closed for a period of time after the spin cycle ends or power is lost to give time to st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F39/14
Inventor M·S·奥斯瓦蒂克
Owner ARK LES
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