CN1880566B - Washing machine lid lock with memory wire actuator - Google Patents
Washing machine lid lock with memory wire actuator Download PDFInfo
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- CN1880566B CN1880566B CN2006100748130A CN200610074813A CN1880566B CN 1880566 B CN1880566 B CN 1880566B CN 2006100748130 A CN2006100748130 A CN 2006100748130A CN 200610074813 A CN200610074813 A CN 200610074813A CN 1880566 B CN1880566 B CN 1880566B
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- latch
- marmem
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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
The cross reference of related application
The application is the part continuity application of the U.S. Patent Application Serial Number 10/982,008 of submission on November 5th, 2004, and this application is hereby expressly incorporated by reference.
The relevant statement of federal funding research or exploitation
Technical field
The present invention relates to a kind of cover lock that is used for washing machine, relate in particular to a kind of memory wire actuator that can be used for this or other application scenario.
Background technology
In the swing circle process of washing machine, rotate at a high speed water centrifugal throwing away from clothing by the clothing that will rotate in the basket (spin basket).In order to reduce injury end user's possibility, can will stop in laundry and swing circle process that the washing machine cover that enters the rotation basket is locked in the position of closing.The cover lock that is used for this purpose is designed to still make lid keep closing of a period of time after swing circle finishes or cuts off the power supply usually, with the time of stopping for the rotation basket of sening as an envoy to.
This " time delay " characteristic can be arranged in the cover lock by using temperature-sensitive element, such as using wax driver (wax motor) or bimetal strip, they two can start lock by electrical heating, must make before after heating stops, unclamping then their the cooling a period of time.The wax driver adopts a piston and cylinder, and the latter accommodates wax or other expanding material.In the time of heating wax, piston is pushed out from cylinder to finish necessary locking.When cylinder cooled off, piston shrank under the effect of spring force.Can apply heat to the wax driver by using positive temperature coefficient (PTC) resistance of viscose glue on wax gear housing one side.
Bimetal strip adopts two kinds of different metals (for example having different thermal coefficient of expansions) usually, and they are laminated together, thereby can make the bonding jumper bending and make the lid locking the heating of bonding jumper.Can directly heat this bimetal strip by making electric current, and directly the method for energising is not suitable for the wax driver by bimetal strip or the PTC resistance that is connected in the part of bimetal strip planar side.
Marmem is that a class can be from the alloy of tension recovery after being heated to certain temperature.The wire form marmem that is called as " muscularity wire (muscle wire) " can shrink several percentages of its length when being heated, and can be used for constituting a thermal actuator.Usually by lower electric current is come its heating by muscularity length wiry.The total length of this process heating of metal silk makes it activate the length variations maximum, can not hinder expansion wiry again.Direct heating wiry also can provide fast reaction to muscularity.
The big obstacle that the muscularity wire is applied to such as the medium commercial field of cover lock of washing machine is that the high-tension line power supply that electrical equipment need be received usually anticipate applicable to muscularity low tension wiry, and to regulate to eliminate the muscularity wire that may damage its tension force recovery characteristics this voltage overheated.
Summary of the invention
The invention provides a kind of thermal actuator that is applicable to washing machine lid lock.This actuator utilizes a marmem wire, but by use independent heating element heater independently the heating of metal silk avoided carrying out the problem of Power Processing as wire.The delay of actuation speed reduces by using sliding interface that heater is directly contacted with wire.Can adjust heating element heater working being higher than under the voltage wiry, and heating element heater can naturally have self-adjusting ability, for example a PTC resistance.Heating element heater also can provide or use greater than thermal mass wiry, thereby can control heat lag independently after outage.
Specifically, the invention provides a kind of dynamo-electric latch, this latch has: a framework, and this framework provides a fixing point; Second end that one first flat spring, this flat spring have first end that is connected to framework and separate along an axis and fixing point, the described axis of the described first flat spring approximate vertical extends; An and marmem wire, this wire has one first end and one second end, described first end wiry is connected in fixing point, thereby described second end wiry is connected to the second end wire of described first flat spring to be extended along described axis, when when heating marmem wire, changing with the length of shape memory wire, described marmem wire moves second end of described first flat spring with respect to fixing point, thereby first flat spring provides tension force to wire in the process that marmem wire length changes, one electric heater, this electric heater is pressing the marmem wire, simultaneous adaptation marmem length variations wiry; And a latch assembly, described latch assembly is parallel to described axis and slides; One C shape spring, the lower end of described C shape spring is connected in second end of described first flat spring, the upper end of described C shape spring is connected to second flat spring with the described first flat spring almost parallel, thereby along with marmem length wiry changes and mobile latch assembly; Wherein, the marmem wire keeps the tension force of constant, and is deformed into a thermal conductance surface of pressing electric heater with sliding-contact from described electric heater from a straight line.
Like this, the purpose of at least one embodiment of the present invention be can be at low cost, actually in occasions such as domestic. applications use a kind of marmem wire.Using independent heater rather than wire is carried out resistance heated to provide the consistent more thermal control that adds, and eliminates the possibility that produces focus owing to high resistance area in wire.Direct contact between heater and the wire provides faster, and reaction activates.
Electric heater can be the adjustment electric heater.In one embodiment, this electric heater can be self-regulating PTC resistance.
Therefore, another purpose of at least one embodiment of the present invention is not use expensive power conditioning circuitry.
Can make the marmem wire keep straining and being out of shape from straight line, thereby press a heat-transfer surface of heater by heater.
Like this, another purpose of at least one embodiment of the present invention provides and a kind ofly makes a heater and closely thermo-contact wiry and do not hinder the structure that activates required wire motion.
Flexible heat-transfer surface is to promote the contact between wire and the heat-transfer surface.
Like this, the closely thermo-contact that provides with heater of another purpose of at least one embodiment of the present invention can adapt to manufacturing tolerance and possible heater surfaces thermal deformation simultaneously again.
Heat-transfer surface can be an electrode of a PTC resistance that forms electric heater.
Like this, another purpose of at least one embodiment of the present invention provides a kind of open-and-shut structure, and this structure is with electrode and heat conducting element combines and form very low path of thermal resistance between wire and heater.
Location structure can be positioned at wire the fixing point on the framework and form between the spring of tensile force on the wire.
Like this, another purpose of at least one embodiment of the present invention provides a kind of wire and heat-transfer surface definite contact the in whole expansion wiry and contraction scope.
Spring can be flat spring, or is the spring mechanism of overcenter, perhaps is bistable element.
Like this, another purpose of at least one embodiment of the present invention is to provide a kind of tensile force to wire, and this tensile force has mild or negative relatively spring constant, thereby improves the actuating distance by shape memory alloy component provided.
Electromechanical actuator can comprise an electric switch, and this electric switch is connected in shape memory alloy component, thereby therewith activated, and perhaps can comprise mechanical lock, and perhaps existing switch also has lock.
Like this, another purpose of at least one embodiment of the present invention provides a kind of actuator that especially is suitable as washing machine lid lock or similar application.
Actuator can comprise a housing, and this housing is around shape memory alloy component, and the marmem wire can be by the housing electric insulation, thereby does not have electric current to flow through the marmem wire.
Like this, another purpose of at least one embodiment of the present invention is the insulation that does not need between wire and the heating element, thereby avoids reducing thermo-contact.
Actuator can comprise a hot memory, makes the marmem wire keep heated state, for example when not after the electric heater energising wire make a period of time that engages of locking maintenance and latch scraper plate.Can regulate during this period of time and after the electric heater energising, make the initial required time of joint of lock to make it to surpass.
Like this, another purpose of at least one embodiment of the present invention is to generate a kind of latch, and this latch can provide tangible heat lag, and need in wire self thermal mass not arranged.
Shape memory alloy component can be Nitinol.Shape memory alloy component can be the wire of heating after-contraction.
Another purpose of at least one embodiment of the present invention provides a kind of design, and this design can be used the relative more expensive marmem of minute quantity.By operation tensile force pattern rather than compression or beam mode, obtain bigger power with regard to available few material.
Shape memory alloy component can be the Flexinol wire.
Like this, another purpose of at least one embodiment of the present invention provides a kind of alloy, and this alloy can use in the cycle that repeats and can not lose efficacy.
Purpose that these are specific and advantage can be applicable to some embodiment that only fall into the claim scope, but not delimit the scope of the invention.
Description of drawings
Fig. 1 is the simplification stereogram of roof-mounted washing machine, the figure shows the position of cover lock and can use such as outer member of the present invention;
Fig. 2 is the rough schematic view of the element of lock shown in Figure 1, the figure shows such as the marmem that interrelates with switch and is used at the fixing lock of pin that before the close cap demonstration is positioned at above the scraper plate;
Fig. 3 is the figure similar with Fig. 2, the figure shows in close cap and starts the marmem wire with the pin of locking after the scraper plate;
Fig. 4 is the three-dimensional exploded view that is used for heating the heating element heater shown in Fig. 2 and 3, the figure shows PTC resistance is clipped between two electrode members;
Fig. 5 is electrode shown in Figure 4 and the plan view from above wiry that assembles, and the figure shows an electrode bending, to form the thermal interface that engages with the wire large tracts of land of tensioning; And
Fig. 6 shows metal wire and is changing the chart that length acts on the power above it so that negative spring constant to be provided.
The specific embodiment
Referring now to Fig. 1,, the roof-mounted washing machine 10 of a standard comprises lid 12, and this lid can be closed to cover rotation basket 14.Bayonet lock 16 can extend downwards from an edge of lid 12, thereby is held by the retaining mechanism 18 in washing machine 10 housings.
Referring to Fig. 2, retaining mechanism 18 can comprise the shell 20 that is connected in washing machine 10 housings.Shell 20 preferably is made of the electric insulation thermoplastic, thereby makes the element insulating in the retaining mechanism 18 as described as follows.
The bayonet locks 16 that extend downwards from lid 12 can enter the opening shell 20, thereby are held by the pin holding tank 24 that is positioned at scraper plate 26 peripheries, and scraper plate 26 is around axis 28 rotations.Extension spring 30 is between near the scraper plate 26 that is connected shell 20 and rotation the pin holding tank 24, and the scraper plate 26 with rotation before scraper plate 26 is admitted pin 16 is biased under the clockwise pattern shown in Figure 2 fully.
Referring now to Fig. 3,, pin 16 is along the vertical substantially axial-movement of lid 12.When pin 16 injected in the shell nozzle 23 fully, the root edge 34 of pin 16 engaged with pin holding tank 24 in the rotor segment 26, made that to rotate rotor segment 26 counterclockwise around rotation 28.When the extension spring 30 of tensioning passes through the rotation 28 of rotor segment 26, its power redirects, rotor segment 26 being moved to complete counterclockwise position shown in Figure 3, and the root edge of pin 16 is fixed under the surface of pin holding tank 24 of rotor segment 26.
At this moment, also the lock slots in the periphery of rotor segment 26 36 is aimed at the horizontal slip lock 38 that can engage with lock slots 36.The joint of lock slots 36 and horizontal slip lock 38 can prevent rotor segment 26 because of the power motion clockwise that pin 16 makes progress, and for example attempts to open cover of washing machine 12 by a people and the rotation basket still is kept in motion and causes.
Referring to Fig. 2, shell 20 comprises horizontally extending memory wire 40 again, and this wire is the Nitinol with crystal structure, thereby when heating of metal silk 40, wire 40 shrinks along its length.Being suitable for wire of the present invention is to be made by the Dynalloy Inc. that is positioned at California Costa Mesa, and commodity are called FLEXINL.Wire 40 in a preferred embodiment has and is approximately 90 degrees centigrade transformation temperature.
First end of wire 40 is connected in housing at fixing point 42 places, and second end of wire 40 is connected in and is approximately perpendicular to that wire 40 extends and its lower end adheres to the flat spring 44 of shell 20.Temporarily referring to Fig. 6, along with wire 40 changes length, flat spring 44 provides tensile force and acts on constant relatively flat spring power 41 on the wire 40 to wire 40.This leveling of flat spring power 41 is that the power by flat spring 44 causes with respect to the vector that the wire axis changes with the bending of flat spring 44, and a part of natural increase of the flat spring power 41 that this bending causes the bending of flat spring 44 has been offset.
Refer again to Fig. 2, the end that wire 40 is connected in flat spring 44 is connected in the below of the free arm end of flat spring 44 just.This free end of flat spring 44 also is pivotally connected to the lower end of C shape spring 46 to form compression spring element.C shape spring 46 remaining upper ends are connected in second flat spring 48, and this spring is roughly parallel to first flat spring 44.In a preferred embodiment, two flat springs 44 and 48 are cut out and are made with suitable from the same spring.
When wire 40 was in not heating and is elongated condition thus, flat spring 44 placed the outside (leaving wire 40) of the upper end of C shape spring 46 with the lower end of C shape spring 46, thereby second flat spring 48 is pushed away rotor segment 26.The free arm end of second flat spring 48 is connected in slide lock 38, thereby at this moment slide lock 38 is removed from rotor segment 26.
And be connected in flat spring 44 cantilever end be first contact 50, thereby can be communicated with the terminal (not shown) that can be connected in other circuit by flat spring 44.When wire 40 was in not heated condition, contact 50 kept the interval with second fixed contact 52, and second fixed contact also is connected with a terminal (not shown).
Referring now to Fig. 3,, when heating of metal silk 40, flat spring 44 is inwardly drawn, thereby the lower end that causes C shape spring is with respect to the motion to the inside of its upper end, make the bias voltage of C shape spring 46 on second flat spring 48 reverse, cause the latter towards rotor segment 26 bendings, slide lock 38 and lock slots 36 engaged and contact 50 is connected with 52.Like this, shrinking wire 40 is used for lid 12 lockings of will close and provides the expression lock 38 positive signals that in fact engaged by contact 50 and 52.If rotor segment 26 does not rotate to position shown in Figure 3, for example do not close fully owing to lid 12, slide lock 38 is not aimed at lock slots 36 so, and can not move right and enough make contact 50 and 52 closures, but the periphery that is rotated scraper plate 26 stops.The abnormal locking of this expression lid 12.
With the circuit (will be described below) of electric heater 54 be not connected usually, and be not used as the part of the temperature controller of wire 40 with 52 formed switches by contact 50.Switch just provides the electricity feedback to lock safely with expression lid 12 to control circuit of the washing machine.Such on off state is only closed and rotor segment 26 is in and just can reaches when closing the door the position at lid 12.
Also will be referring to Fig. 6, to the lower end of C shape spring 46,46 compressions of C shape spring cause the initial C shape spring force 49 that increases the tensile force on the wire 40 along with the contraction of wire 40.The total power 55 on the wire 40 of acting on are C shape spring forces 49 with flat spring power 41 and.Along with the tie point of C shape spring 46 and flat spring 44 is mobile to the inside, thereby intersect with second flat spring 48, so at " overcenter " point 43 places, total power 55 that flat spring 44 acts on the wire 40 descends suddenly owing to the reverse of C shape spring force 49, and this power is pushed flat spring 44 to wire 40 now.The action of this " spring of overcenter " causes the local negative stress coefficient at regional 51 places, and total negative stress coefficient 53 increases the actuating distance that wire 40 is provided greatly.This is because the length variations amount on the wire depends on the cause that acts on the tensile force on the wire 40.The negative stress coefficient is meant along with in contrast to the mobile increase of the direction of power and power reduces.Lower power also can prolong the service life of wire 40.
Total referring to Fig. 2 and 3, this heating to wire 40 is carried out indirectly by electric heater 54, electric heater is combined by positive temperature coefficient (PTC) resistance 56 that is clipped between first electrode 58 and second electrode 60, can apply voltage 62 between two electrodes.Flow through electrode 58 and 60 and PTC resistance 56 between electric current make PTC resistance 56 heating, and this heat is transmitted to wire 40 by electrode 58.
As understanding in the art, the resistance of PTC resistance 56 increases as the function of temperature, thereby for substantially invariable voltage, will reduce electric current by raising along with temperature and regulate its temperature.In a preferred embodiment, when being driven by standard circuit voltage, PTC resistance 56 provides big adjustment between 125-145 degree centigrade.Can cause irreversible infringement to memory wire 40 up to 200 degrees centigrade temperature.
The area of PTC resistance 56 broads and the cooling effect of electrode 58 can be eliminated the focus in the wire 40, and electric current can produced such focus by wire 40 in to wire 40 direct resistance heated.With PTC resistance 56 just do not need to regulate or reduce voltage from line voltage distribution level commonly used, thereby can come heating of metal silk 40 by the such line voltage distribution of not treated direct reception.
Referring now to Fig. 4,, electrode 58 can be horizontally extending brass rod, and the one end is formed with terminal 61, and it is outstanding to form and being electrically connected of electrode 58 that terminal 61 can pass shell 20.PTC resistance 56 has all electrode surface 64 integrally formed in its front and back, and one of these surfaces can lean against on the inner surface of electrode 60.The interior electrode surface 64 of remaining PTC resistance 56 can contact the spring clip 66 of second electrode 60, then PTC resistance 56 is inwardly pressed against first electrode 58.Second electrode 60 can similarly have the terminal 70 of downward extension, and this terminal is extensible by shell 20, thereby stable and insert in other circuit by shell 20.
One end of wire 40 can be fixed in the fixing point 42 at electrode 58 1 end places, and electrode 58 is connected in the framework that is made of shell 20 in turn, so that wire 40 is fixed on the shell 20.The remainder of wire 40 can pass through the outer surface of electrode 58, thereby its most length was contacted with this surface before being connected in flat spring 44.Wire 40 can above volume (crimped-on) connector, for example be folded on the groove with the concentric tube that is connected with wire 40 or the crimping segment of lug and stop.These connectors can be by the admittances and fixing such as corresponding keyway that are formed in flat spring 44 and the electrode 58.
Referring to Fig. 5, electrode 58 outer convex bendings, has only a part against the substantially flat of PTC resistance 56, and this convex surface that wire 40 partly twines electrode 58 to be guaranteeing electrode 58 and wire 40 good thermal conductivity when the relative motion between the two, and do not consider the slight variation of the surface configuration of electrode 58.Tensile force in the wire 40 produces the vertical force of wire opposing electrode 58 when the straight line of electrode 58 is removed at wire 40.This vertical force makes the thermo-contact between electrode 58 and PTC resistance 56 formed heaters and the wire 40 good, and wire 40 is slided when length changes.
Though wire 40 contact electrodes 58, owing to equate therefore in wire 40, do not have electric current along its length electromotive force.Like this, produced the danger of focus with regard to the difference that does not have owing to resistance in the wire 40.
Refer again to Fig. 4, terminal 61 and terminal 70 can be connected in line power 62 by timing circuit 72, for example energising of the tight mechanism 18 of the controlled lockmaking of timing circuit in laundry and swing circle, and when swing circle is finished, make retaining mechanism 18 inoperative.When retaining mechanism 18 is inoperative, by cutting off power supply from terminal 61 and 70, electrode 58 and PTC resistance 56 provide enough thermal masses (thermal mass), thereby the temperature of wire 40 is remained on a period of time on the transformation temperature, can be used for making the rotation basket to stop the rotation during this period of time.If the washing machine swing circle is finished or cut off the power supply, then carry out the delay of this release.Can notice that release postpones to depend on that heat is from these thermal masses scattering and disappearing to environment, and in a preferred embodiment, this release postpones to be longer than electrode 58 and PTC resistance 56 are heated to transformation temperature with the required time of locking, does not scatter and disappear thereby can rely on amount of heat substantially.Like this, block action can be slower than very fast and release action, the relative difference between this two times by changing electrode 58 thermal mass and/or scatter and disappear elasticity control by insulation, ventilation or fin or other similar method control to the heat of environment.These principles not only can be applicable to lock as described herein and switch, also can be applied to comprise bayonet lock etc. in other the cover ring mechanism.
Though the actuator here has specific value and application, be used for cover lock such as the occasion that postpones between when needed, but what can know is, this actuator is not limited to this application, must simplicity of design also can find the application scenario in the field of the firm and actuating system that cost is low at other.In this time delay is used, a significant advantage that marmem is used for wire 40 is that the contraction of length is a nonlinearity response, and it is from for example about 70 ℃ of beginnings and 75 ℃ of end, and the expansion of length ends at 40 ℃ in for example about 50 ℃ of beginnings.The reaction that this motion occurs in the less temperature range discerned is favourable for utilizing cooling and heating to come the device of timing in the cover ring mechanism.On the contrary, the similar response curve of bimetallic material can be more near straight line, can shrink motion thereby be difficult to prediction at what temperature or clock switch or latch.
The pin member that is moved by the marmem wire can be described lock and/or latch, or bayonet lock.
What specifically will propose is, the present invention is not limited to embodiment and the explanation that this place comprises, but comprises the modification of these embodiment of the scope that falls into appended embodiment, and these modifications comprise the combination of the key element of the part of embodiment or different embodiment.
Claims (17)
1. dynamo-electric latch comprises:
One framework, this framework is provided with a fixing point;
Second end that one first flat spring, described first flat spring have first end that is connected to framework and separate along an axis and fixing point, the described axis of the described first flat spring approximate vertical extends;
One marmem wire, described marmem wire has one first end and one second end, described first end wiry is connected in fixing point, thereby described second end wiry is connected to the second end wire of described first flat spring to be extended along described axis, when when heating marmem wire, changing with shape memorial alloy length wiry, described marmem wire moves second end of described first flat spring with respect to fixing point, thereby described first flat spring provides tension force to the marmem wire in the process that marmem wire length changes;
One electric heater, this electric heater is pressing the marmem wire, simultaneous adaptation marmem length variations wiry; And
One latch assembly, described latch assembly are parallel to described axis and slide;
One C shape spring, the lower end of described C shape spring is connected in second end of described first flat spring, the upper end of described C shape spring is connected to second flat spring with the described first flat spring almost parallel, thereby along with marmem length wiry changes and mobile latch assembly;
Wherein, the marmem wire keeps the tension force of constant, and is deformed into a thermal conductance surface of pressing electric heater with sliding-contact from described electric heater from a straight line.
2. dynamo-electric latch as claimed in claim 1 is characterized in that, flexible heat-transfer surface is to promote the contact between marmem wire and the heat-transfer surface.
3. dynamo-electric latch as claimed in claim 1 is characterized in that, heat-transfer surface can be an electrode of a PTC resistance that forms electric heater.
4. dynamo-electric latch as claimed in claim 1 is characterized in that, electric heater provides the metal conducting path wiry from a resistive heater to marmem.
5. dynamo-electric latch as claimed in claim 1 is characterized in that, latch assembly is bistable.
6. dynamo-electric latch as claimed in claim 1 is characterized in that, latch assembly provides a negative stress coefficient to marmem.
7. dynamo-electric latch as claimed in claim 1 is characterized in that, latch assembly is an electric switch, and the marmem wire is connected in this electric switch, thereby activates this electric switch.
8. dynamo-electric latch as claimed in claim 1 is characterized in that, obstructed electric current in the marmem wire.
9. dynamo-electric latch as claimed in claim 1 is characterized in that the marmem wire is a Nitinol.
10. dynamo-electric latch as claimed in claim 1 is characterized in that the marmem wire shrinks along with heating.
11. dynamo-electric latch as claimed in claim 1 is characterized in that the marmem wire specifically is approximately 90 degrees centigrade transformation temperature.
12. dynamo-electric latch as claimed in claim 1 is characterized in that, electric heater is an adjustment electric heater.
13. dynamo-electric latch as claimed in claim 1 is characterized in that, electric heater is a positive temperature coefficient resistor.
14. dynamo-electric latch as claimed in claim 1 is characterized in that framework comprises an adjusting device, this adjusting device changes the position of a marmem part wiry with respect at least a portion of framework.
15. dynamo-electric latch as claimed in claim 14 is characterized in that, adjusting device is to make the crooked screw of a framework part.
16. dynamo-electric latch as claimed in claim 1 is characterized in that, latch assembly is a lock that engages with this scraper plate after a latch scraper plate holds a bayonet lock.
17. dynamo-electric latch as claimed in claim 16, it is characterized in that, it comprises a hot memory, this hot memory makes the marmem wire keep heated state, thereby no longer after the electric heater energising, make lock keep engaging a period of time, surpassing during this period of time and heating the required time of marmem wire for lock is engaged with the latch scraper plate to electric heater energising back with the latch scraper plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/146,662 | 2005-06-07 | ||
| US11/146,662 US7617703B2 (en) | 2004-11-05 | 2005-06-07 | Washing machine lid lock with memory wire actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1880566A CN1880566A (en) | 2006-12-20 |
| CN1880566B true CN1880566B (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100748130A Expired - Fee Related CN1880566B (en) | 2005-06-07 | 2006-04-14 | Washing machine lid lock with memory wire actuator |
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| CN (1) | CN1880566B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723105B (en) * | 2018-12-14 | 2020-11-06 | 浙江一佳厨卫科技股份有限公司 | Shower device with water-saving function |
| CN110106668B (en) * | 2019-06-11 | 2021-06-15 | 温州天健电器有限公司 | Electric door lock on-off control device, door lock and washing machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851260B2 (en) * | 2001-01-17 | 2005-02-08 | M 2 Medical A/S | Shape memory alloy actuator |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851260B2 (en) * | 2001-01-17 | 2005-02-08 | M 2 Medical A/S | Shape memory alloy actuator |
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Granted publication date: 20110622 Termination date: 20140414 |