CN220208866U - Earth leakage protector earthing device - Google Patents

Abstract

The utility model discloses a grounding device of an earth leakage protector, which comprises an earth leakage breaker shell, wherein the upper end and the lower end of the earth leakage breaker shell are respectively provided with a power terminal and a load terminal, the back surface of the load terminal is provided with an external grounding assembly, the part, close to the power terminal, in the earth leakage breaker shell is provided with an insulating frame, and the two sides in the insulating frame are respectively connected with a power inlet wire through a third wiring bolt. When the earth leakage protector in this application takes place the electric leakage, lift the protection contact through trip gear, protection contact and lower contact separation this moment, the circuit disconnection, the protection contact separates down the back of contact, lower contact loses pressure, upset under reset spring's effect, and with the ground trigger piece contact on it, live wire electric current passes through the power earth connection and the current conducting plate and the earth connection conduction ground that connect, realize the ground connection, avoid the whole electric leakage of electric leakage circuit breaker shell, cause safety hazard when avoiding touching electric leakage circuit breaker shell, also avoid the conflagration to take place.

Description

Earth leakage protector earthing device

Technical Field

The utility model relates to the field of electrical safety, in particular to a grounding device of a leakage protector.

Background

The leakage protector, called leakage switch for short, is mainly used for protecting the life of life with fatal danger when the equipment has leakage fault, has overload and short-circuit protection function, can be used for protecting the overload and short circuit of the circuit or motor, and can also be used for starting the circuit without frequent conversion under normal condition.

The current earth leakage protector does not possess the ground connection function, and earth leakage protector at during operation, its outer shell electric leakage touches earth leakage protector this moment, takes place the potential safety hazard easily, and in addition, when the zero sequence transformer in earth leakage protector detects the emergence electric leakage, because itself breaks off with the power, but the power live wire still outputs the electric current, if the whole earth leakage protector itself of electric current conduction in the live wire, also can lead to the safety problem even conflagration, therefore, this application provides an earth leakage protector earthing device.

Disclosure of Invention

The present utility model is directed to a grounding device for a leakage protector, so as to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an earth leakage protector earthing device, includes earth leakage circuit breaker shell, earth leakage circuit breaker shell's upper and lower end is provided with power wiring end and load wiring end respectively, the back of load wiring end is provided with outside grounding module, the part that is close to power wiring end in the earth leakage circuit breaker shell is provided with the insulating frame, both sides are connected with power inlet wire through the third wiring bolt respectively in the insulating frame, both sides are provided with the inlet wire fishplate bar in the insulating frame, through the crimping of third wiring bolt between inlet wire fishplate bar and the power inlet wire, the inlet wire fishplate bar rotates and is connected with down the contact, lower contact one side is provided with the protection contact, power protection grounding module is installed to lower contact top, power protection grounding module is located the lower contact top of live wire one side in the power inlet wire.

Further, the external grounding assembly comprises a conductive plate, two side walls of the conductive plate are fixedly connected with the leakage breaker shell through a first wiring bolt and a second wiring bolt respectively, and the first wiring bolt and the second wiring bolt are connected with a grounding wire and a power supply grounding wire respectively.

Further, a reset spring is connected between the two side walls of the lower contact piece and the insulating frame.

Further, the power protection grounding assembly comprises a connecting plate, the connecting plate is fixedly connected with the insulating frame through a fourth wiring bolt, the fourth wiring bolt is connected with one end of a power grounding wire, the connecting plate is integrally connected with a grounding trigger piece, and the end part of the grounding trigger piece is located above the lower contact piece.

Further, the conducting plate is an L-shaped conducting metal sheet, an insulating plastic shell is arranged outside the conducting plate, and the insulating plastic shell is bonded with the surface of the leakage breaker shell through an adhesive.

Further, the connecting plate and the grounding trigger piece are mutually perpendicular, and the connecting plate and the grounding trigger piece are L-shaped integrated conductive metal sheets

Compared with the prior art, the utility model has the beneficial effects that:

1. when the earth leakage protector works, the protective contact is pressed down to separate the lower contact from the lower contact, the lower contact below the ground contact is connected with a live wire in a power line, the ground contact is connected with a connecting plate and a power ground wire, a second wiring bolt and a conducting plate connected with the power ground wire are not connected into a power circuit, but the conducting plate is always released from the earth leakage breaker shell, and leakage current in the earth leakage breaker shell is led out through the conducting plate and the ground wire connected with the conducting plate, so that safety hazard caused when the earth leakage breaker shell is touched is avoided;

2. when the zero sequence transformer in the leakage protector detects that the leakage occurs, the protection contact is lifted through the tripping device, at the moment, the protection contact is separated from the lower contact, the circuit is disconnected, but the lower contact connected with the power live wire continuously outputs current, the current easily causes the leakage of the whole leakage breaker shell, and after the protection contact is separated from the lower contact, the lower contact loses pressure and turns over under the action of the reset spring and contacts with the grounding trigger piece on the lower contact, at the moment, the power live wire, the lower contact, the grounding trigger piece, the connecting plate and the power grounding wire are conducted, the live wire current is conducted into the ground through the power grounding wire and the conductive plate and the grounding wire which are connected with the power live wire, the whole leakage of the leakage breaker shell is avoided, the safety hazard is avoided when the leakage breaker shell is touched, and the fire disaster is avoided.

Drawings

FIG. 1 is a schematic view of a leakage breaker housing according to the present utility model;

FIG. 2 is a schematic view of an external grounding assembly mounting structure according to the present utility model;

FIG. 3 is a schematic view of an external grounding assembly of the present utility model;

FIG. 4 is a schematic view of a terminal structure of the present utility model;

FIG. 5 is a schematic diagram of the power protection grounding assembly of the present utility model when not triggered;

fig. 6 is a schematic diagram of a power protection grounding assembly according to the present utility model when triggered.

In the figure: 1. an earth leakage breaker housing; 2. load terminals; 3. a power supply terminal; 4. an external ground assembly; 5. a first terminal bolt; 6. a conductive plate; 7. a power supply ground wire; 8. a second terminal bolt; 9. a ground wire; 10. a connecting plate; 11. a wire inlet connecting plate; 12. a return spring; 13. a lower contact; 14. protecting the contact; 15. a power supply protection grounding assembly; 16. an insulating frame; 17. a third terminal bolt; 18. a power supply inlet wire; 19. a grounding trigger piece; 20. and a fourth binding bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1 to 6, an earth leakage protector earthing device comprises an earth leakage breaker housing 1, wherein a power terminal 3 and a load terminal 2 are respectively arranged at the upper and lower ends of the earth leakage breaker housing 1, an external earthing component 4 is arranged at the back of the load terminal 2, an insulating frame 16 is arranged at the part, close to the power terminal 3, of the earth leakage breaker housing 1, power inlet wires 18 are respectively connected to two sides of the insulating frame 16 through third wiring bolts 17, inlet wire connecting plates 11 are arranged at two sides of the inner bottom of the insulating frame 16, the inlet wire connecting plates 11 and the power inlet wires 18 are in compression joint through the third wiring bolts 17, a lower contact piece 13 is rotatably connected to the inlet wire connecting plates 11, a protection contact piece 14 is arranged at one side of the lower contact piece 13, a power protection earthing component 15 is arranged above the lower contact piece 13 at one side of a live wire in the power inlet wire 18, the external grounding component 4 comprises a conductive plate 6, two side walls of the conductive plate 6 are fixedly connected with the earth leakage breaker shell 1 through a first wiring bolt 5 and a second wiring bolt 8 respectively, the first wiring bolt 5 and the second wiring bolt 8 are respectively connected with a grounding wire 9 and a power grounding wire 7, a reset spring 12 is connected between two side walls of a lower contact 13 and an insulating frame 16, a power protection grounding component 15 comprises a connecting plate 10, the connecting plate 10 is fixedly connected with the insulating frame 16 through a fourth wiring bolt 20, the fourth wiring bolt 20 is connected with one end of the power grounding wire 7, the connecting plate 10 is integrally connected with a grounding trigger piece 19, the end part of the grounding trigger piece 19 is positioned above the lower contact 13, the connecting plate 10 and the grounding trigger piece 19 are mutually perpendicular, the connecting plate 10 and the grounding trigger piece 19 are L-shaped integrated conductive metal pieces, the conductive plate 6 is L-shaped conductive metal pieces, when the earth leakage protector works, the protective contact piece 14 is pressed down to contact piece 13, as shown in fig. 5, at the moment, the grounding trigger piece 19 is separated from the lower contact piece 13, the lower contact piece 13 below the grounding trigger piece 19 is connected with a live wire in a power wire, the grounding trigger piece 19 is connected with the connecting plate 10 and the power ground wire 7, the second wiring bolt 8 and the conductive plate 6 which are connected with the power ground wire 7 are not connected into a power circuit, but the conductive plate 6 is released from the earth leakage breaker shell 1 all the time, and the current leaked in the earth leakage breaker shell 1 is led out through the conductive plate 6 and the grounding wire 9 connected with the conductive plate, so that safety hazard is avoided when the earth leakage breaker shell 1 is touched;

when the zero sequence transformer in the leakage protector detects that the leakage occurs, the protection contact piece 14 is lifted through the tripping device, at the moment, the protection contact piece 14 is separated from the lower contact piece 13, the circuit is disconnected, but the lower contact piece 13 connected with the power live wire continues to output current, the current easily causes the whole leakage breaker shell 1 to leak electricity, and after the protection contact piece 14 separates the lower contact piece 13, the lower contact piece 13 loses pressure, is overturned under the action of the reset spring 12 and is contacted with the grounding trigger piece 19 on the lower contact piece, at the moment, the power live wire, the lower contact piece 13, the grounding trigger piece 19, the connecting plate 10 and the power grounding wire 7 are conducted, the live wire current is conducted into the ground through the power grounding wire 7 and the conducting plate 6 and the grounding wire 9 connected with the power live wire, the whole leakage breaker shell 1 is avoided, the safety hazard is avoided when the leakage breaker shell 1 is prevented from being touched, and the fire disaster is also avoided.

Example 2: the earth connection of earth leakage protector is different from embodiment 1 in that the outside of the conductive plate 6 is provided with an insulating plastic housing, the insulating plastic housing is adhered to the surface of the earth leakage breaker housing 1 by an adhesive, and the insulating plastic housing is used for the protection of the conductive plate 6 and has waterproof and dustproof effects.

The working principle of the utility model is as follows: when the zero sequence transformer in the leakage protector detects that the leakage occurs, the protection contact piece 14 is lifted through the tripping device, at the moment, the protection contact piece 14 is separated from the lower contact piece 13, the circuit is disconnected, but the lower contact piece 13 connected with the power live wire continues to output current, the current easily causes the whole leakage of the leakage breaker shell 1, and after the protection contact piece 14 separates the lower contact piece 13, the lower contact piece 13 loses pressure, is overturned under the action of the reset spring 12 and is contacted with the grounding trigger piece 19 on the lower contact piece, at the moment, the power live wire, the lower contact piece 13, the grounding trigger piece 19, the connecting plate 10 and the power grounding wire 7 are conducted, the live wire current is conducted into the ground through the power grounding wire 7 and the conducting plate 6 and the grounding wire 9 connected with the power live wire, the grounding is realized, the whole leakage of the leakage breaker shell 1 is avoided, the safety hazard caused when the leakage breaker shell 1 is prevented from being touched, and the fire disaster is also avoided.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a earth leakage protector earthing device, includes electric leakage circuit breaker shell (1), the upper and lower end of electric leakage circuit breaker shell (1) is provided with power wiring end (3) and load wiring end (2) respectively, its characterized in that: the back of load wiring end (2) is provided with outside ground connection subassembly (4), be close to part of power wiring end (3) in electric leakage circuit breaker shell (1) and be provided with insulating frame (16), both sides are connected with power inlet wire (18) through third binding bolt (17) respectively in insulating frame (16), in-house bottom both sides in insulating frame (16) are provided with inlet wire fishplate bar (11), press-connection through third binding bolt (17) between inlet wire fishplate bar (11) and power inlet wire (18), inlet wire fishplate bar (11) rotate and are connected with down contact (13), lower contact (13) one side is provided with protection contact (14), power protection ground connection subassembly (15) are installed to lower contact (13) top, power protection ground connection subassembly (15) are located lower contact (13) top of live wire one side in power inlet wire (18).

2. The earth leakage protector grounding device of claim 1, further comprising: the external grounding assembly (4) comprises a conductive plate (6), two side walls of the conductive plate (6) are fixedly connected with the leakage breaker shell (1) through a first wiring bolt (5) and a second wiring bolt (8), and the first wiring bolt (5) and the second wiring bolt (8) are respectively connected with a grounding wire (9) and a power supply grounding wire (7).

3. The earth leakage protector grounding device of claim 2, further comprising: and a reset spring (12) is connected between the two side walls of the lower contact piece (13) and the insulating frame (16).

4. A earth leakage protector earthing device according to claim 3, characterized in that: the power protection grounding assembly (15) comprises a connecting plate (10), the connecting plate (10) is fixedly connected with an insulating frame (16) through a fourth wiring bolt (20), the fourth wiring bolt (20) is connected with one end of a power grounding wire (7), the connecting plate (10) is integrally connected with a grounding trigger piece (19), and the end part of the grounding trigger piece (19) is located above the lower contact piece (13).

5. The earth leakage protector grounding means of claim 4, further comprising: the conductive plate (6) is an L-shaped conductive metal sheet, an insulating plastic shell is arranged outside the conductive plate (6), and the surfaces of the insulating plastic shell and the leakage breaker shell (1) are bonded through an adhesive.

6. The earth leakage protector grounding means of claim 5, further comprising: the connecting plate (10) and the grounding trigger piece (19) are mutually perpendicular, and the connecting plate (10) and the grounding trigger piece (19) are L-shaped integrated conductive metal sheets.