CN219717877U - Under-voltage protection device and wire plug row with same - Google Patents
Under-voltage protection device and wire plug row with same Download PDFInfo
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- CN219717877U CN219717877U CN202321143301.0U CN202321143301U CN219717877U CN 219717877 U CN219717877 U CN 219717877U CN 202321143301 U CN202321143301 U CN 202321143301U CN 219717877 U CN219717877 U CN 219717877U
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- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model belongs to the field of electronic circuits, and provides an under-voltage protection device and a plug wire row with the same. The undervoltage protection device can be used along with plug and play, is connected to the positions with sockets and household electric equipment in the room, is suitable for various household electric equipment, and the main contact of the relay contactor is automatically disconnected to cut off the power supply when the power is cut off or the voltage is too low, so that the household electric equipment is protected if no manual operation is performed.
Description
Technical Field
The utility model belongs to the field of electronic circuits, and particularly relates to an under-voltage protection device and a plug wire row with the same.
Background
In daily life, voltage instability caused by reasons such as theft of zero line, equipment aging, technical faults, human faults, natural disasters, power failure, incoming call again and the like occurs when the voltage is too low to cause damage of household electric equipment, so that household property loss is caused, and claim cannot be claimed.
Therefore, it is necessary to provide an undervoltage protection device suitable for various household electric equipment and used by plug and play.
Disclosure of Invention
The utility model provides an under-voltage protection device and a plug wire row with the same, and aims to solve the technical problems.
The utility model is realized in that an under-voltage protection device comprises: the device comprises a wire inlet end, a relay contactor, a self-resetting switch, an auxiliary contact of the contactor and a wire outlet end;
the wire inlet end comprises a live wire inlet end and a zero wire inlet end, the wire outlet end comprises a live wire outlet end and a zero wire outlet end, the live wire inlet end and the zero wire inlet end are respectively connected with one side of a main contact of the relay contactor, and the live wire outlet end and the zero wire outlet end are respectively connected with the other side of the main contact of the relay contactor;
and the live wire inlet end is connected with one end of the coil of the relay contactor through the self-resetting switch and the auxiliary contact of the contactor respectively, and the other end of the coil of the relay contactor is connected with the zero wire inlet end.
Further, the device also comprises a fuse, wherein the fuse is connected with the live wire inlet end.
Further, the wire inlet end is connected with a plug.
Further, the outlet end is connected with a socket.
The utility model also provides a plug wire row with the under-voltage protection device, which comprises the following components: the under-voltage protection device comprises a wire inlet end, a relay contactor, a self-resetting switch, an auxiliary contact of the contactor and a wire outlet end;
the wire inlet end comprises a live wire inlet end and a zero wire inlet end, the wire outlet end comprises a live wire outlet end and a zero wire outlet end, the live wire inlet end and the zero wire inlet end are respectively connected with one side of a main contact of the relay contactor, and the live wire outlet end and the zero wire outlet end are respectively connected with the other side of the main contact of the relay contactor;
the live wire inlet end is also connected with one end of a coil of the relay contactor through the self-resetting switch and the contactor auxiliary contact respectively, and the other end of the coil of the relay contactor is connected with the zero wire inlet end;
the wire inlet end is connected with the plug of the wire plug row, and the wire outlet end is connected with the socket of the wire plug row.
Further, the device also comprises a fuse, wherein the fuse is connected with the live wire inlet end.
Advantageous effects
The undervoltage protection device and the plug wire row with the undervoltage protection device can be inserted and used at any time, are connected to the positions with sockets and household electric equipment in the room, and are suitable for various household electric equipment, wherein when the relay contactor is in power failure or has low voltage, the main contact is automatically disconnected to cut off the power supply, and if no manual operation is performed, the main contact is not automatically connected, so that the household electric equipment is protected.
Drawings
Fig. 1 is a schematic structural diagram of an undervoltage protection device according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, an embodiment of the present utility model provides an under-voltage protection device, which includes a lead-in terminal, a relay contactor, a self-resetting switch, a contactor auxiliary contact, and a lead-out terminal, wherein:
the incoming line end comprises a live line incoming line end L 1 And zero line inlet end N 1 It is connected with a power supply, and the outlet end comprises a live wire outlet end L 3 And zero line outlet end N 3 Which is used for connecting with household electric equipment. L in FIG. 1 2 And N 2 For the incoming line of the main contact of the relay contactor KM, the incoming line end L of the live wire 1 And zero line inlet end N 1 One side of the main contact of the relay contactor KM is respectively connected with the live wire outlet end L 3 And zero line outlet end N 3 And the other sides of the main contacts of the relay contactor KM are respectively connected.
Live wire inlet end L 1 Also respectively through a self-resetting switch SB and a contactor auxiliary contact KM 1 One end a of a coil of the relay contactor KM is connected, and the other end b of the coil of the relay contactor KM is connected with a zero line inlet end N 1 And (5) connection. The self-reset switch SB is a button switch, has no self-locking function and is an auxiliary contact KM of the contactor 1 Has self-locking or self-holding function.
The implementation process of the undervoltage protection device shown in fig. 1 is as follows:
live wire inlet end L 1 And zero line inlet end N 1 Inserting a power supply, pressing a self-reset switch SB, powering a relay contactor KM, enabling the relay contactor KM to act, closing a main contact of the relay contactor KM, and enabling the power supply to be powered on from a live wire inlet end L 1 And zero line inlet end N 1 Incoming line L passing through main contact KM of relay contactor 2 、N 2 And the main contact of the relay contactor KM is sent to the live wire outlet end L 3 And zero line outlet end N 3 The auxiliary contact KM is used for household electric equipment and is also used for a contactor 1 Closing self-locking, and continuously switching on the power supply.
When the power failure or the voltage is reduced, the relay contactor KM does not act, the coil current of the relay contactor KM is reduced, the electromagnetic force is insufficient to attract the movable iron core, and the main contact of the relay contactor KM is automatically disconnected to cut off the power supply.
As an optimization, the embodiment of the utility model also comprises a fuse F, wherein the fuse F is connected with the live wire inlet end L 1 For switching off the power supply in case of short circuit or high voltage, protecting undervoltage protection device and householdAnd electric equipment.
In addition, live wire inlet end L 1 And zero line inlet end N 1 A plug is connected with the live wire outlet end L 3 And zero line outlet end N 3 The under-voltage protection device is connected with a socket, so that the under-voltage protection device can be inserted and used at any time, and is convenient to move to a position with the socket and household electric equipment for use.
The embodiment of the utility model also provides a plug wire row with the under-voltage protection device, which comprises the under-voltage protection device shown in fig. 1, wherein the under-voltage protection device comprises a wire inlet end, a relay contactor, a self-resetting switch, an auxiliary contact of the contactor and a wire outlet end, wherein:
the incoming line end comprises a live line incoming line end L 1 And zero line inlet end N 1 It is connected with a power supply, and the outlet end comprises a live wire outlet end L 3 And zero line outlet end N 3 Which is used for connecting with household electric equipment. L in FIG. 1 2 And N 2 For the incoming line of the main contact of the relay contactor KM, the incoming line end L of the live wire 1 And zero line inlet end N 1 One side of the main contact of the relay contactor KM is respectively connected with the live wire outlet end L 3 And zero line outlet end N 3 And the other sides of the main contacts of the relay contactor KM are respectively connected.
Live wire inlet end L 1 Also respectively through a self-resetting switch SB and a contactor auxiliary contact KM 1 One end a of a coil of the relay contactor KM is connected, and the other end b of the coil of the relay contactor KM is connected with a zero line inlet end N 1 And (5) connection. The self-reset switch SB is a button switch, has no self-locking function and is an auxiliary contact KM of the contactor 1 Has self-locking or self-holding function.
The plug of the plug wire row is connected to the inlet wire end, and the socket of the plug wire row is connected to the outlet wire end for this plug wire row is used along with inserting, conveniently moves to the position that has socket and family's consumer and uses.
The implementation process of the plug wire row with the undervoltage protection device is as follows:
inserting the plug into a power supply, pressing a self-reset switch SB, powering a relay contactor KM, operating the relay contactor KM, closing a main contact of the relay contactor KM, and connecting the power supply from the plug to the main contact of the relay contactor KMIncoming line L 2 、N 2 The main contact of the relay contactor KM is sent to each socket on the plug wire row for household electric equipment to use, and meanwhile, the auxiliary contact KM of the contactor is used for the auxiliary contact KM 1 Closing self-locking, and continuously switching on the power supply.
When the power failure or the voltage is reduced, the relay contactor KM does not act, the coil current of the relay contactor KM is reduced, the electromagnetic force is insufficient to attract the movable iron core, and the main contact of the relay contactor KM is automatically disconnected to cut off the power supply.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. An undervoltage protection device, comprising: the device comprises a wire inlet end, a relay contactor, a self-resetting switch, an auxiliary contact of the contactor and a wire outlet end;
the wire inlet end comprises a live wire inlet end and a zero wire inlet end, the wire outlet end comprises a live wire outlet end and a zero wire outlet end, the live wire inlet end and the zero wire inlet end are respectively connected with one side of a main contact of the relay contactor, and the live wire outlet end and the zero wire outlet end are respectively connected with the other side of the main contact of the relay contactor;
and the live wire inlet end is connected with one end of the coil of the relay contactor through the self-resetting switch and the auxiliary contact of the contactor respectively, and the other end of the coil of the relay contactor is connected with the zero wire inlet end.
2. The under-voltage protection device of claim 1, further comprising a fuse connected to the live wire inlet end.
3. The undervoltage protection device of claim 1, wherein the incoming wire end is connected to a plug.
4. The undervoltage protection device of claim 1, wherein the outlet is connected to a socket.
5. Take undervoltage protection device's plug wire row, its characterized in that includes: the under-voltage protection device comprises a wire inlet end, a relay contactor, a self-resetting switch, an auxiliary contact of the contactor and a wire outlet end;
the wire inlet end comprises a live wire inlet end and a zero wire inlet end, the wire outlet end comprises a live wire outlet end and a zero wire outlet end, the live wire inlet end and the zero wire inlet end are respectively connected with one side of a main contact of the relay contactor, and the live wire outlet end and the zero wire outlet end are respectively connected with the other side of the main contact of the relay contactor;
the live wire inlet end is also connected with one end of a coil of the relay contactor through the self-resetting switch and the contactor auxiliary contact respectively, and the other end of the coil of the relay contactor is connected with the zero wire inlet end;
the wire inlet end is connected with the plug of the wire plug row, and the wire outlet end is connected with the socket of the wire plug row.
6. The strip line with under-voltage protection device of claim 5, further comprising a fuse connected to the live wire inlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321143301.0U CN219717877U (en) | 2023-05-12 | 2023-05-12 | Under-voltage protection device and wire plug row with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321143301.0U CN219717877U (en) | 2023-05-12 | 2023-05-12 | Under-voltage protection device and wire plug row with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219717877U true CN219717877U (en) | 2023-09-19 |
Family
ID=88000134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321143301.0U Active CN219717877U (en) | 2023-05-12 | 2023-05-12 | Under-voltage protection device and wire plug row with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219717877U (en) |
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2023
- 2023-05-12 CN CN202321143301.0U patent/CN219717877U/en active Active
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