CN219568351U - Switch protection circuit, electronic equipment and washing machine - Google Patents
Switch protection circuit, electronic equipment and washing machine Download PDFInfo
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- CN219568351U CN219568351U CN202320355610.8U CN202320355610U CN219568351U CN 219568351 U CN219568351 U CN 219568351U CN 202320355610 U CN202320355610 U CN 202320355610U CN 219568351 U CN219568351 U CN 219568351U
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- 238000005406 washing Methods 0.000 title claims abstract description 25
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The present utility model relates to the field of electronic devices, and in particular, to a switch protection circuit, an electronic device, and a washing machine. Wherein, this switch protection circuit includes: the switching load module comprises at least one switching load branch, and the switching load branch comprises a load and a second switch which are connected in series; the first end of the first power supply is connected with the first end of each of the at least one switch load branch respectively, and the second end of the first power supply is connected with the second end of each of the at least one switch load branch respectively; the output end of the second power supply is connected with the first end of the first switch, and the second end of the first switch is respectively connected with the power supply end of each second switch in the at least one second switch; the voltage value corresponding to the first power supply is larger than the voltage value corresponding to the second power supply. The utility model adopting the scheme can improve the safety of the electronic equipment in use.
Description
Technical Field
The present utility model relates to the field of electronic devices, and in particular, to a switch protection circuit, an electronic device, and a washing machine.
Background
With the development of science and technology, electronic devices are increasingly popular, and the production and life of people are improved. In the related art, an electronic device, for example, a door lock of a washing machine, is connected in series with a load power supply circuit of the washing machine, and when the door lock protects the washing machine, a large current passing through a load in the washing machine needs to be carried, so that the situation that the door lock burns out and has bad risks is high, and the safety of the electronic device in use is low.
Disclosure of Invention
The utility model provides a switch protection circuit, electronic equipment and a washing machine, and mainly aims to improve the safety of the electronic equipment during use.
According to an aspect of the present utility model, there is provided a switch protection circuit including: the switching device comprises a first power supply, a second power supply, a switching load module and a first switch, wherein the switching load module comprises at least one switching load branch, and the switching load branch comprises a load and a second switch which are connected in series; wherein,,
the first end of the first power supply is respectively connected with the first end of each of the at least one switch load branch, and the second end of the first power supply is respectively connected with the second end of each of the at least one switch load branch;
the output end of the second power supply is connected with the first end of the first switch, and the second end of the first switch is respectively connected with the power supply end of each second switch in at least one second switch;
the voltage value corresponding to the first power supply is larger than the voltage value corresponding to the second power supply.
Optionally, in an embodiment of the present utility model, the first power source is an ac power source, and the second power source is a dc power source.
Optionally, in one embodiment of the present utility model, the first end of the first power supply is a live end, and the second end of the first power supply is a zero line end;
or,
the first end of the first power supply is a zero line end, and the second end of the first power supply is a fire line end.
Alternatively, in one embodiment of the present utility model, the first power source is a 220V ac power source, and the second power source is a 12V dc power source.
Optionally, in one embodiment of the present utility model, the first switch is a door lock.
Optionally, in an embodiment of the present utility model, the second switch is a relay.
Optionally, in one embodiment of the present utility model, a printed circuit board is further included; wherein,,
at least one of the second switches is integrated in the printed circuit board.
Optionally, in one embodiment of the present utility model, a control unit is further included; wherein,,
the output end of the control unit is respectively connected with the control end of each second switch in at least one second switch.
According to another aspect of the present utility model, there is provided an electronic apparatus including: a switch protection circuit as claimed in any one of the preceding aspects.
According to another aspect of the present utility model, there is provided a washing machine including: a switch protection circuit as claimed in any one of the preceding aspects.
In summary, in one or more embodiments of the present utility model, a switch protection circuit includes: the switching load module comprises at least one switching load branch, and the switching load branch comprises a load and a second switch which are connected in series; the first end of the first power supply is connected with the first end of each of the at least one switch load branch respectively, and the second end of the first power supply is connected with the second end of each of the at least one switch load branch respectively; the output end of the second power supply is connected with the first end of the first switch, and the second end of the first switch is respectively connected with the power supply end of each second switch in the at least one second switch; the voltage value corresponding to the first power supply is larger than the voltage value corresponding to the second power supply. Therefore, the first switch is connected in series in the power supply circuit corresponding to the second switch, and the power supply circuit corresponding to the second switch supplies power through the second power supply, so that the voltage value corresponding to the second power supply is smaller than the voltage value corresponding to the first power supply, and the first switch does not need to bear large current passing through a load, so that the condition that the first switch burns out to cause bad risks can be reduced, and the safety of the electronic equipment in use can be improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a background schematic view of a washing machine according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a first switch protection circuit according to an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a second switch protection circuit according to an embodiment of the present utility model.
Reference numerals illustrate: a fire wire end-L; zero line end-N.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. On the contrary, the embodiments of the utility model include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
With the development of science and technology, electronic devices are increasingly popular, and the production and life of people are improved. In the related art, an electronic device, such as a door lock of a washing machine, is connected in series in a load power supply circuit of the washing machine, as shown in fig. 1.
It is easy to understand that when the door lock protects the washing machine, the door lock needs to bear large current passing through a load in the washing machine, so that the situation that the door lock burns out and has bad risks is higher, and the safety of the electronic equipment is lower when the electronic equipment is used.
The present utility model will be described in detail with reference to specific examples.
Fig. 2 is a schematic structural diagram of a first switch protection circuit according to an embodiment of the present utility model.
As shown in fig. 2, the switch protection circuit includes: the switching load module comprises at least one switching load branch, and the switching load branch comprises a load and a second switch which are connected in series; wherein,,
the first end of the first power supply is connected with the first end of each of the at least one switch load branch respectively, and the second end of the first power supply is connected with the second end of each of the at least one switch load branch respectively;
the output end of the second power supply is connected with the first end of the first switch, and the second end of the first switch is respectively connected with the power supply end of each second switch in the at least one second switch;
the voltage value corresponding to the first power supply is larger than the voltage value corresponding to the second power supply.
According to some embodiments, the load is not specific to a certain fixed load. The load may be, for example, an appliance load.
In some embodiments, the second switch is connected in series to the power circuit corresponding to the first power supply, and can be used as on-off control to control the on-off state of the power circuit corresponding to the first power supply, so as to control the power supply state of the load corresponding to the second switch. Meanwhile, the second switch can also have a circuit breaking protection function.
In some embodiments, the first switch is connected in series to the control circuit of the second switch, and when the first switch is turned off, the second switch cannot work, and the second switch is maintained to be turned off, so that the load corresponding to the second switch is in a non-working state, and therefore the first switch can play a role in protecting the load. When the first switch is closed, the power supply end of the second switch can normally receive power supply of the second power supply.
And thus, the second switch is controlled to be closed, so that the load corresponding to the second switch is in a working state.
Optionally, in an embodiment of the present utility model, fig. 3 is a schematic structural diagram of a second switch protection circuit provided in an embodiment of the present utility model. As shown in fig. 3, the first power source is an ac power source, and the second power source is a dc power source.
According to some embodiments, the first end of the first power supply is the live end L and the second end of the first power supply is the neutral end N, as shown in fig. 3. Or the first end of the first power supply is a zero line end N, and the second end of the first power supply is a live line end L.
In some embodiments, the voltage value corresponding to the first power supply does not refer to a certain fixed voltage value. For example, the first power source may be a 220V ac power source.
According to some embodiments, the voltage value corresponding to the second power supply does not refer to a certain fixed voltage value. For example, the second power source may be a 12V dc power source.
Alternatively, in one embodiment of the present utility model, as shown in fig. 3, the first switch is a door lock.
According to some embodiments, the door lock may be, for example, a washing machine door lock, and in particular, a drum washing machine door lock.
Alternatively, in one embodiment of the utility model, the second switch is a relay, as shown in fig. 3.
Optionally, in one embodiment of the utility model, the switch protection circuit further comprises a printed circuit board (Printed Circuit Board, PCB); wherein,,
at least one second switch is integrated in the printed circuit board.
According to some embodiments, as shown in fig. 3, at least one relay is integrated in the PCB.
Optionally, in one embodiment of the present utility model, the switch protection circuit further includes a control unit; wherein,,
the output end of the control unit is respectively connected with the control end of each second switch in the at least one second switch.
According to some embodiments, as shown in fig. 3, contacts corresponding to the relay are connected in series in a power circuit corresponding to the first power source, and an electrical load corresponding to the relay is connected in series. The first end of the coil corresponding to the relay is connected with the second end of the door lock, and the second end of the coil corresponding to the relay is connected with the control unit.
In some embodiments, the control unit and the PCB may be disposed in a computer board controller, and when the door lock is in a closed state, the control unit in the computer board controller may control the on-off state of at least one relay in the PCB, so that a required electrical load may be selectively turned on according to a requirement.
In summary, the switch protection circuit provided by the embodiment of the utility model comprises: the switching load module comprises at least one switching load branch, and the switching load branch comprises a load and a second switch which are connected in series; the first end of the first power supply is connected with the first end of at least one switch load branch, and the second end of the at least one switch load branch is connected with the second end of the first power supply; the output end of the second power supply is connected with the first end of the first switch, and the second end of the first switch is respectively connected with the power supply end of each second switch in the at least one second switch; the voltage value corresponding to the first power supply is larger than the voltage value corresponding to the second power supply. Therefore, the first switch is connected in series in the power supply circuit corresponding to the second switch, and the power supply circuit corresponding to the second switch supplies power through the second power supply, so that the voltage value corresponding to the second power supply is smaller than the voltage value corresponding to the first power supply, and the first switch does not need to bear large current passing through a load, so that the condition that the first switch burns out to cause bad risks can be reduced, and the safety of the electronic equipment in use can be improved.
According to the embodiment of the utility model, the utility model further provides electronic equipment.
The electronic device includes: a switch protection circuit as shown in the previous embodiments.
In summary, an electronic device provided by an embodiment of the present utility model includes: and a switch protection circuit. Therefore, the first switch is connected in series in the power supply circuit corresponding to the second switch, and the power supply circuit corresponding to the second switch supplies power through the second power supply, so that the voltage value corresponding to the second power supply is smaller than the voltage value corresponding to the first power supply, and the first switch does not need to bear large current passing through a load, so that the condition that the first switch burns out to cause bad risks can be reduced, and the safety of the electronic equipment in use can be improved.
According to the embodiment of the utility model, the utility model further provides a washing machine.
The washing machine includes: a switch protection circuit as shown in the previous embodiments.
According to some embodiments, the washing machine is not specifically limited to a particular stationary washing machine. For example, the washing machine may be a drum washing machine.
In summary, the washing machine provided by the embodiment of the utility model comprises: and a switch protection circuit. Therefore, the first switch is connected in series in the power supply circuit corresponding to the second switch, and the power supply circuit corresponding to the second switch supplies power through the second power supply, so that the voltage value corresponding to the second power supply is smaller than the voltage value corresponding to the first power supply, and the first switch does not need to bear large current passing through a load, so that the condition that the first switch burns out to cause bad risks can be reduced, and the safety of the electronic equipment in use can be improved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms may be directed to different embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A switch protection circuit, comprising: the switching device comprises a first power supply, a second power supply, a switching load module and a first switch, wherein the switching load module comprises at least one switching load branch, and the switching load branch comprises a load and a second switch which are connected in series; wherein,,
the first end of the first power supply is respectively connected with the first end of each of the at least one switch load branch, and the second end of the first power supply is respectively connected with the second end of each of the at least one switch load branch;
the output end of the second power supply is connected with the first end of the first switch, and the second end of the first switch is respectively connected with the power supply end of each second switch in at least one second switch;
the voltage value corresponding to the first power supply is larger than the voltage value corresponding to the second power supply.
2. The switch protection circuit of claim 1, wherein the first power source is an ac power source and the second power source is a dc power source.
3. The switch protection circuit of claim 2, wherein the first terminal of the first power supply is a hot terminal and the second terminal of the first power supply is a zero terminal;
or,
the first end of the first power supply is the zero line end, and the second end of the first power supply is the fire line end.
4. The switch protection circuit of claim 2, wherein the first power source is a 220V ac power source and the second power source is a 12V dc power source.
5. The switch protection circuit of claim 1, wherein the first switch is a door lock.
6. The switch protection circuit of claim 1, wherein the second switch is a relay.
7. The switch protection circuit of claim 1, further comprising a printed circuit board; wherein,,
at least one of the second switches is integrated in the printed circuit board.
8. The switch protection circuit of claim 1, further comprising a control unit; wherein,,
the output end of the control unit is respectively connected with the control end of each second switch in at least one second switch.
9. An electronic device, comprising: a switch protection circuit as claimed in any one of claims 1 to 8.
10. A washing machine, comprising: a switch protection circuit as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320355610.8U CN219568351U (en) | 2023-02-20 | 2023-02-20 | Switch protection circuit, electronic equipment and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320355610.8U CN219568351U (en) | 2023-02-20 | 2023-02-20 | Switch protection circuit, electronic equipment and washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219568351U true CN219568351U (en) | 2023-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320355610.8U Active CN219568351U (en) | 2023-02-20 | 2023-02-20 | Switch protection circuit, electronic equipment and washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219568351U (en) |
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- 2023-02-20 CN CN202320355610.8U patent/CN219568351U/en active Active
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