CN204155080U - Automatic holding device and household electrical appliance - Google Patents
Automatic holding device and household electrical appliance Download PDFInfo
- Publication number
- CN204155080U CN204155080U CN201420462329.5U CN201420462329U CN204155080U CN 204155080 U CN204155080 U CN 204155080U CN 201420462329 U CN201420462329 U CN 201420462329U CN 204155080 U CN204155080 U CN 204155080U
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- relay
- relay coil
- normally open
- open contact
- holding device
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Abstract
The utility model discloses a kind of automatic holding device and household electrical appliance.This automatic holding device comprises pushbutton switch, the first relay coil, relay normally open contact, feed circuit, wherein, pushbutton switch connect with feed circuit after incoming transport power supply, relay normally open contact is connected in parallel on pushbutton switch two ends, feed circuit are connected with the first relay coil, feed circuit are under relay normally open contact is in off-state, when detecting that pushbutton switch closes, pass into the DC current of first direction to the first relay coil, relay normally open contact is closed also can be kept closed.The utility model is when outside power-off, relay normally open contact with auto-lock function can be kept closed, to keep the connection of feed circuit, thus when sending a telegram here again in outside, machine can continue to run corresponding function, does not need artificially again to press power switch; And can determine whether disconnect normally opened contact, deenergization as required after machine has run.
Description
Technical field
The utility model relates to home wiring control field, particularly a kind of automatic holding device and household electrical appliance.
Background technology
The control panel of current household electrical appliances generally can design a shift knob, for starting the machine or stopping machine running.This shift knob often adopts following two kinds of modes:
Big current mechanical switch, the method can directly utilize mechanical switch to open or closing device general supply, when pressing switch, contacting, power supply is connected; Again press, switch flicks, and contact disconnects, power-off.This type of switch many employings self-locking.
Forceful electric power microswitch, this switch is directly gone here and there on forceful electric power circuit, and when it is pressed, system obtains electric, and automatically can be connected across this switch ends, directly by switch short circuit by other one group of contact.So when button is released, system still can retainer belt electricity condition.
For big current mechanical switch, because this type of switch over travel is comparatively large, operating experience is poor.And system can not auto power off after machine is finished the work, cause machine stand-by power consumption comparatively large, be progressively eliminated at present.
A large amount of forceful electric power microswitch also existing defects used at present, particularly when externally fed disconnects, system can not power on automatically, causes machine can not continue to run.Have a power failure once outside, again artificially duplicate removal newly must press on & off switch after incoming call, can re-power, very not convenient.Particularly when machine adopts communication mutual contact mode and other-end interconnected communication, as wifi, have a power failure once outside, cause communication disruption, if user stays out, just cannot pass through wifi control machine.If think control machine or allow machine continue to run, again on & off switch must be pressed.
Utility model content
In view of above technical matters, the utility model provides a kind of automatic holding device and household electrical appliance, when external system power-off, the corresponding closing of contact can be kept not disconnect, to keep the connection of feed circuit, thus ensure that again incoming call system can power on automatically.
According to an aspect of the present utility model, a kind of automatic holding device is provided, comprise pushbutton switch, first relay coil, relay normally open contact, feed circuit, wherein, pushbutton switch connect with feed circuit after incoming transport power supply, relay normally open contact is connected in parallel on pushbutton switch two ends, feed circuit are connected with the first relay coil, feed circuit are under relay normally open contact is in off-state, when detecting that pushbutton switch closes, the DC current of first direction is passed into the first relay coil, relay normally open contact is closed when the first relay coil passes into the DC current of first direction also can be kept closed.
In an embodiment of the present utility model, feed circuit under relay normally open contact is in closure state, detect that pushbutton switch is closed or detect that machine runs complete when needing powered-down, the DC current of second direction is passed into the first relay coil, relay normally open contact disconnects when the first relay coil passes into the DC current of second direction and can remain open state, and wherein second direction is contrary with first direction.
In an embodiment of the present utility model, relay normally open contact can keep the state before the first relay coil dead electricity when the first relay coil dead electricity.
In an embodiment of the present utility model, described automatic holding device also comprises relay normally closed contact, and its repeat circuit normally closed contact disconnects when the first relay coil passes into the DC current of first direction and can remain open state; Relay normally closed contact is closed when the first relay coil passes into the DC current of second direction also can be kept; Relay normally closed contact can keep the state before the first relay coil dead electricity when the first relay coil dead electricity.
In an embodiment of the present utility model, described automatic holding device also comprises the second relay coil, second relay coil is connected with feed circuit, wherein, feed circuit under relay normally open contact is in closure state, detect that pushbutton switch is pressed or it is complete when needing powered-down to detect that machine runs, pass into the DC current of first direction to the second relay coil, relay normally open contact disconnects when the second relay coil passes into the DC current of first direction and can keep.
In an embodiment of the present utility model, relay normally open contact the first relay coil and the second relay coil all dead electricity time can keep the first relay coil and the second relay coil dead electricity before state.
In an embodiment of the present utility model, described automatic holding device also comprises relay normally closed contact, and its repeat circuit normally closed contact disconnects when the first relay coil passes into the DC current of first direction and can keep; Relay normally closed contact is closed when the second relay coil passes into the DC current of first direction also can be kept closed; Relay normally closed contact the first relay coil and the second relay coil all dead electricity time can keep the first relay coil and the second relay coil dead electricity before state.
According to another aspect of the present utility model, provide a kind of household electrical appliance, comprise the automatic holding device as described in above-mentioned any embodiment.
The utility model is when outside power-off, relay normally open contact with auto-lock function can be kept closed, to keep the connection of feed circuit, thus when sending a telegram here again in outside, machine can continue to run corresponding function, does not need artificially again to press power switch; And can determine whether disconnect normally opened contact, deenergization as required after machine has run.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1-Fig. 4 schematically shows the schematic diagram of the some working stages of automatic holding device in the utility model first embodiment.
Fig. 5 is the schematic diagram of automatic holding device in the utility model second embodiment.
Fig. 6 is the schematic diagram of automatic holding device in the utility model the 3rd embodiment.
Fig. 7 is the schematic diagram of automatic holding device in the utility model the 4th embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing instructions.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 1-Fig. 4 schematically shows the schematic diagram of the some working stages of automatic holding device in the utility model first embodiment.The schematic diagram of automatic holding device when Fig. 1 is machine switched off in the utility model first embodiment.As shown in Figure 1, described automatic holding device comprises pushbutton switch SW, the first relay coil KA1, relay normally open contact KA1, feed circuit, wherein:
Incoming transport power supply after pushbutton switch SW connects with feed circuit, relay normally open contact KA1 is connected in parallel on pushbutton switch SW two ends, and feed circuit are connected with the first relay coil KA1.
Relay normally open contact KA1 is the switch contact with auto-lock function, the break-make of this contact can control with the first relay coil KA1, when the first relay coil KA1 passes into the direct current of first direction, relay normally open contact KA1 closes and can be kept closed, and wherein said first direction can be forward or backwards; When the first relay coil KA1 passes into the direct current of second direction, relay normally open contact KA1 disconnects and can remain open state, wherein second direction is contrary with first direction electric power polarity, namely the first relay coil KA1 accesses the direct supply of second direction, accesses the electric power polarity contrary (as shown in Figure 2 and Figure 4) of the direct supply of first direction with the first relay coil KA1; When the first relay coil KA1 dead electricity, relay normally open contact KA1 keeps the state before dead electricity.
First relay coil KA1 is controlled by feed circuit under normal circumstances, and feed circuit can apply forward dc power supply or oppositely direct supply or deenergization to it.
Specifically, as shown in Figure 1, when machine switched off, the following Fig. 1 of state. power on button SW disconnects, and coil KA no power, normally opened contact KA remains open.
Fig. 2 is the schematic diagram that in the utility model first embodiment, automatic holding device when opening machine connected by pushbutton switch.As shown in Figure 2, feed circuit are under off-state at relay normally open contact KA1, when detecting that pushbutton switch SW closes, pass into the DC current of first direction to the first relay coil KA1; Relay normally open contact KA1 is closed when the first relay coil KA1 passes into the DC current of first direction also can be kept closed.
In an embodiment of the present utility model, described automatic holding device can be applied in the on-off circuit of the machines such as household electrical appliance, with the power on/off of control machine.
Fig. 3 is the schematic diagram of automatic holding device when pushbutton switch disconnects in the utility model first embodiment.As shown in Figure 3, when pushbutton switch unclamps, the first relay coil KA1; Relay normally open contact KA1 can keep the state before the first relay coil KA1 dead electricity when the first relay coil KA1 dead electricity.
Equally, when external ac power source disconnects or when having a power failure, as long as feed circuit do not give the direct current supply of the first relay coil KA1 second direction, relay normally open contact KA1 keeps self-locking closure state always, when external power source is again connected or sent a telegram here, feed circuit and machine can work on automatically.
Based on the automatic holding device that the utility model above-described embodiment provides, relay normally open contact KA1 can keep the state before the first relay coil KA1 dead electricity when the first relay coil KA1 dead electricity.Therefore, when external ac power source disconnects or when outside has a power failure, relay normally open contact can be kept closed, to keep the connection of feed circuit, thus when sending a telegram here again in outside, machine can continue to run corresponding function, does not need artificially again to press power switch.
Fig. 4 is the schematic diagram of automatic holding device when needing closing machine in the utility model first embodiment.As shown in Figure 4, feed circuit are under closure state at relay normally open contact KA1, it is complete when needing powered-down to detect that pushbutton switch SW is closed or detect that machine runs, pass into the DC current of second direction to the first relay coil KA1, relay normally open contact KA1 disconnects when the first relay coil KA1 passes into the DC current of second direction and can remain open state.
The closedown of machine can be realized by following two kinds of modes in the utility model above-described embodiment:
One is again press the button interrupteur SW, when now feed circuit detect that pushbutton switch SW is pressed and again unclamps, pushbutton switch SW passes into the direct current of second direction to the first relay coil KA1, and now relay normally open contact KA1 disconnects and resetting, and general supply disconnects.
Two is that feed circuit detect that machine runs the complete direct current needing automatically to pass into the first relay coil KA1 during powered-down second direction, and relay normally open contact KA1 is disconnected and resets, general supply disconnects.
Can by passing into the direct current of second direction to the first relay coil KA1 by the above embodiment of the present invention, pilot relay normally opened contact KA1 disconnects reset in due course, i.e. powered-down, as system cloud gray model complete after need powered-down.
In an embodiment of the present utility model, described feed circuit comprise inverting module, thus by commutating to direct supply, pass into the DC current of first direction or second direction can to the first relay coil KA1.
Embodiment described in Fig. 1-Fig. 4 is the automatic maintenance function of the on-off circuit that citing unicoil list normally opened contact formula latching circuit realizes, and automatic holding device of the present utility model also has following multiple transform form.
Fig. 5 is the schematic diagram of automatic holding device in the utility model second embodiment.Compared with the utility model first embodiment described in Fig. 1-Fig. 4, in the embodiment shown in fig. 5, described automatic holding device also comprises relay normally closed contact KA2, wherein:
Relay normally closed contact KA2 disconnects when the first relay coil KA1 passes into the DC current of first direction and can remain open state; Relay normally closed contact KA2 is closed when the first relay coil KA1 passes into the DC current of second direction also can be kept; Relay normally closed contact KA2 can keep the state before the first relay coil KA1 dead electricity when the first relay coil KA1 dead electricity.
Automatic holding device described in Fig. 5 embodiment is a kind of unicoil double-contact formula latching circuit, as shown in Figure 5, described automatic holding device comprises a coil (the first relay coil KA1), control one group of normally closed and one group of normally opened contact (relay normally open contact KA1 and relay normally closed contact KA2), when passing into the direct current of first direction to the first relay coil KA1, relay normally open contact KA1 closes, and relay normally closed contact KA2 disconnects.When passing into the direct current of second direction to the first relay coil KA1, relay normally open contact KA1 disconnects, and relay normally closed contact KA2 closes.
In an embodiment of the present utility model, similar with the utility model first embodiment described in Fig. 1-Fig. 4, relay normally open contact KA1 may be used for being switched on or switched off power supply,
In an embodiment of the present utility model, relay normally closed contact KA2 can use as the input trigger pip of other circuit such as control circuit, safety protective circuit.
In an embodiment of the present utility model, described relay normally open contact KA1 and relay normally closed contact KA2 can have many groups, uses using the trigger pip as other circuit such as control circuit, safety protective circuit.
Fig. 6 is the schematic diagram of automatic holding device in the utility model the 3rd embodiment.Compared with the utility model first embodiment described in Fig. 1-Fig. 4, in the embodiment shown in fig. 6, described automatic holding device also comprises the second relay coil KA2, and the second relay coil KA2 is connected with feed circuit, wherein:
Feed circuit are under closure state at relay normally open contact KA1, detect that pushbutton switch SW is pressed or it is complete when needing powered-down to detect that machine runs, and pass into the DC current of first direction to the second relay coil KA2.
Relay normally open contact KA1 disconnects when the second relay coil KA2 passes into the DC current of first direction and can keep.
The automatic holding device of embodiment described in Fig. 6 is a kind of twin coil list normally opened contact formula latching circuit, as shown in Figure 6, described automatic holding device comprises two coils (the first relay coil KA1 and the second relay coil KA2) and controls one group of normally opened contact (relay normally open contact KA1), when passing into the direct current of first direction to the first relay coil KA1, relay normally open contact KA1 closes, machine is energized, and starts working.When passing into the direct current of first direction to the second relay coil KA2, relay normally open contact KA1 disconnects, and machine power-off, starts working.
In an embodiment of the present utility model, relay normally open contact KA1 the first relay coil KA1 and the second relay coil KA2 all dead electricity time can keep the first relay coil KA1 and the second relay coil KA2 dead electricity before state.
Above-described embodiment of the present utility model, compared with the first embodiment described in Fig. 1-Fig. 4, by startup and the shutdown reset of two coils difference control machine, eliminates the inverting module of single coil switch power direction; Above-described embodiment also can be implemented in when when external ac power source disconnects or outside has a power failure and primary power contact can be kept not disconnect, and time incoming call again in outside, machine can continue to run corresponding function, does not need artificially again to press power switch; And above-described embodiment can by passing into the direct current of first direction to the second relay coil KA2, pilot relay normally opened contact KA1 disconnects reset in due course, i.e. powered-down, as system cloud gray model complete after need powered-down.
Fig. 7 is the schematic diagram of automatic holding device in the utility model the 4th embodiment.Compared with the utility model described in Fig. 6 the 3rd embodiment, in the embodiment shown in fig. 7, described automatic holding device also comprises relay normally closed contact KA2, wherein:
Relay normally closed contact KA2 disconnects when the first relay coil KA1 passes into the DC current of first direction and can keep; Relay normally closed contact KA2 is closed when the second relay coil KA2 passes into the DC current of first direction also can be kept closed; Relay normally closed contact KA2 the first relay coil KA1 and the second relay coil KA2 all dead electricity time can keep the first relay coil KA1 and the second relay coil KA2 dead electricity before state.
The automatic holding device of embodiment described in Fig. 7 is a kind of unicoil double-contact formula latching circuit, as shown in Figure 7, described automatic holding device comprises two coils (the first relay coil KA1 and the second relay coil KA2), control one group of normally closed and one group of normally opened contact (relay normally open contact KA1 and relay normally closed contact KA2)
When passing into the direct current of first direction to the first relay coil KA1, relay normally open contact KA1 closes, and relay normally closed contact KA2 disconnects.When passing into the direct current of first direction to the second relay coil KA2, relay normally open contact KA1 disconnects, and relay normally closed contact KA2 closes.
In an embodiment of the present utility model, similar with the utility model first embodiment described in Fig. 6, relay normally open contact KA1 may be used for being switched on or switched off power supply,
In an embodiment of the present utility model, relay normally closed contact KA2 can use as the input trigger pip of other circuit such as control circuit, safety protective circuit.
In an embodiment of the present utility model, described relay normally open contact KA1 and relay normally closed contact KA2 can have many groups, uses using the trigger pip as other circuit such as control circuit, safety protective circuit.
According to another aspect of the present utility model, provide a kind of household electrical appliance, comprise the automatic holding device as described in above-mentioned any embodiment.
Based on the household electrical appliance that the utility model above-described embodiment provides, when outside power-off, relay normally open contact with auto-lock function in automatic holding device can be kept closed, to keep the connection of feed circuit, thus when sending a telegram here again in outside, household electrical appliance can continue to run corresponding function, do not need artificially again to press power switch; And can determine whether disconnect normally opened contact, deenergization as required after household electrical appliance have run.
In an embodiment of the present utility model, also provide a kind of machine, comprise the automatic holding device as described in above-mentioned any embodiment.Described machine can be household electrical appliance, also can be other electrical appliance.
Based on the machine that the utility model above-described embodiment provides, when outside power-off, relay normally open contact with auto-lock function in automatic holding device can be kept closed, to keep the connection of feed circuit, thus when sending a telegram here again in outside, machine can continue to run corresponding function, does not need artificially again to press power switch; And can determine whether disconnect normally opened contact, deenergization as required after machine has run.
So far, the utility model is described in detail.In order to avoid covering design of the present utility model, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Description of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (8)
1. an automatic holding device, it is characterized in that, comprise pushbutton switch, first relay coil, relay normally open contact, feed circuit, wherein, pushbutton switch connect with feed circuit after incoming transport power supply, relay normally open contact is connected in parallel on pushbutton switch two ends, feed circuit are connected with the first relay coil, feed circuit are under relay normally open contact is in off-state, when detecting that pushbutton switch closes, the DC current of first direction is passed into the first relay coil, relay normally open contact is closed when the first relay coil passes into the DC current of first direction also can be kept closed.
2. automatic holding device according to claim 1, is characterized in that,
Feed circuit under relay normally open contact is in closure state, detect that pushbutton switch is closed or detect that machine runs complete when needing powered-down, the DC current of second direction is passed into the first relay coil, relay normally open contact disconnects when the first relay coil passes into the DC current of second direction and can remain open state, and wherein second direction is contrary with first direction.
3. automatic holding device according to claim 1 and 2, is characterized in that,
Relay normally open contact can keep the state before the first relay coil dead electricity when the first relay coil dead electricity.
4. automatic holding device according to claim 2, is characterized in that, also comprises relay normally closed contact, and its repeat circuit normally closed contact disconnects when the first relay coil passes into the DC current of first direction and can remain open state; Relay normally closed contact is closed when the first relay coil passes into the DC current of second direction also can be kept; Relay normally closed contact can keep the state before the first relay coil dead electricity when the first relay coil dead electricity.
5. automatic holding device according to claim 1, it is characterized in that, also comprise the second relay coil, second relay coil is connected with feed circuit, wherein, feed circuit under relay normally open contact is in closure state, detect that pushbutton switch is pressed or it is complete when needing powered-down to detect that machine runs, pass into the DC current of first direction to the second relay coil, relay normally open contact disconnects when the second relay coil passes into the DC current of first direction and can keep.
6. automatic holding device according to claim 5, is characterized in that,
Relay normally open contact the first relay coil and the second relay coil all dead electricity time can keep the first relay coil and the second relay coil dead electricity before state.
7. automatic holding device according to claim 5, is characterized in that, also comprises relay normally closed contact, and its repeat circuit normally closed contact disconnects when the first relay coil passes into the DC current of first direction and can keep; Relay normally closed contact is closed when the second relay coil passes into the DC current of first direction also can be kept closed; Relay normally closed contact the first relay coil and the second relay coil all dead electricity time can keep the first relay coil and the second relay coil dead electricity before state.
8. household electrical appliance, is characterized in that, comprise the automatic holding device according to any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462329.5U CN204155080U (en) | 2014-08-15 | 2014-08-15 | Automatic holding device and household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420462329.5U CN204155080U (en) | 2014-08-15 | 2014-08-15 | Automatic holding device and household electrical appliance |
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| Publication Number | Publication Date |
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| CN204155080U true CN204155080U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420462329.5U Expired - Fee Related CN204155080U (en) | 2014-08-15 | 2014-08-15 | Automatic holding device and household electrical appliance |
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| CN (1) | CN204155080U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095679A (en) * | 2019-05-15 | 2019-08-06 | 国电南瑞科技股份有限公司 | A kind of current supply circuit detection device and method |
| CN117492404A (en) * | 2024-01-02 | 2024-02-02 | 珠海格力电器股份有限公司 | Contact control circuit, control method, electronic device, and storage medium |
-
2014
- 2014-08-15 CN CN201420462329.5U patent/CN204155080U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095679A (en) * | 2019-05-15 | 2019-08-06 | 国电南瑞科技股份有限公司 | A kind of current supply circuit detection device and method |
| CN117492404A (en) * | 2024-01-02 | 2024-02-02 | 珠海格力电器股份有限公司 | Contact control circuit, control method, electronic device, and storage medium |
| CN117492404B (en) * | 2024-01-02 | 2024-05-03 | 珠海格力电器股份有限公司 | Contact control circuit, control method, electronic device, and storage medium |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20210815 |