CN219535066U - Leakage socket - Google Patents

Abstract

The utility model discloses a leakage socket, which comprises an outer shell and a lifting seat, wherein two ends of the lifting seat are provided with extrusion parts capable of extruding a first movable reed and a second movable reed to act, the middle part of the lifting seat is provided with a transmission rod in a penetrating way, the transmission rod is matched with the first spring, the lifting seat is provided with a slot, a movable iron core of a coil assembly is provided with an annular slot, the leakage socket also comprises an L-shaped transmission plate, one end of the L-shaped transmission plate is movably clamped into the annular slot, the other end of the L-shaped transmission plate can be inserted into the slot, the transmission rod is provided with a clamping groove, the L-shaped transmission plate can be clamped into the clamping groove, the lifting seat is provided with a movable seat, a second spring is arranged between the lifting seat and the movable seat, the movable seat is provided with a third movable contact, the circuit board is provided with a third fixed contact matched with the third movable contact, and a G line inserting sheet is electrically connected with the circuit board. The utility model can realize the detection and disconnection of the electric leakage, and realize the synchronous disconnection of the grounding wire when the electric leakage is disconnected, thereby effectively avoiding the potential safety hazard of residual electric leakage current of the grounding wire.

Description

Leakage socket

Technical Field

The utility model relates to an electric fitting, in particular to a leakage socket.

Background

The leakage socket is a safety socket capable of detecting leakage signals and automatically disconnecting. The working principle of the traditional leakage socket is that after a leakage signal is detected, the circuit board controls the iron core of the electromagnetic coil assembly to act, and drives the lifting seat to act through the cooperation of the springs, so that two reeds are driven to act, the disconnection of the movable contact and the static contact is realized, the disconnection of the power supply N line and the L line is realized, and the defect of the structure is that: some sockets are provided with G line inserting sheets, and certain residual current can exist on the G line in the use process, but the G line is not disconnected, so that certain potential safety hazards still exist in the socket.

Disclosure of Invention

In view of the shortcomings of the background technology, the technical problem to be solved by the utility model is to provide the leakage socket capable of realizing synchronous disconnection of the G line.

For this purpose, the utility model is realized by adopting the following scheme:

the utility model provides a leakage socket, includes the shell body be provided with first movable reed, second movable reed and the coil pack of being connected with the circuit board electricity in the shell body, still be provided with N line inserted sheet, L line inserted sheet and G line inserted sheet on the shell body, be provided with first movable contact on the first movable reed, be provided with the second movable contact on the second movable reed, be provided with on the N line inserted sheet with first movable contact complex first stationary contact, be provided with on the L line inserted sheet with second movable contact complex second stationary contact, its characterized in that still includes the elevating seat, the both ends of elevating seat have the extrusion part that can extrude first, second movable reed action, the transfer line is worn to be equipped with in the middle part of elevating seat, the one end of transfer line is connected with the button, transfer line and first spring fit, the last slot that has been seted up of elevating seat, still include L shape drive plate on the movable iron core of coil pack, the one end activity card of L shape drive plate is gone into in the slot, the other end can insert in the slot, be provided with on the transfer line card slot, the L shape drive plate has the third movable contact, the third movable contact has the upper end has the movable contact to be connected with the third movable contact.

By adopting the structure, when the leakage signal occurs and the disconnection is controlled, the disconnection of the G line can be synchronously realized, the potential safety hazard of residual current existing in the G line is avoided, meanwhile, the G line can be disconnected after being disconnected when being disconnected, namely, the N line and the L line are firstly closed, and then the N line and the L line are disconnected, so that the electricity safety is further ensured.

The lifting seat is provided with a temperature sensor, and the temperature sensor is electrically connected with the circuit board.

By adopting the structure, the temperature inside the plug can be detected, particularly the temperature of the N line inserting piece and the L line inserting piece can be detected, when the temperature is too high, information can be fed back to the circuit board 7 in time, the action of the coil assembly is controlled, and the circuit is disconnected.

The shell body has an upper shell cover and a lower shell cover, a sealing ring is arranged between the upper shell cover and the lower shell cover, and the sealing ring is also arranged at the position corresponding to the N line inserting sheet, the L line inserting sheet and the G line inserting sheet of the lower shell cover.

By adopting the structure, the sealing ring is arranged, the sealing part of the shell and the penetrating part of each inserting piece and the shell cover can be sealed, the waterproof performance of the shell is effectively improved, and meanwhile, water vapor can be effectively prevented from entering the shell.

The movable base is characterized in that an N-line wiring electrically connected with the first movable reed, an L-line wiring electrically connected with the second movable reed and a G-line wiring electrically connected with the movable base are arranged in the outer shell, the N-line wiring and the L-line wiring penetrate through the first zero-sequence transformer, the G-line wiring penetrates through the second zero-sequence transformer, and the first zero-sequence transformer and the second zero-sequence transformer are electrically connected with the circuit board.

By adopting the structure, the leakage current signals on the N line, the L line and the G line can be detected by arranging the zero sequence transformers on the wiring of each line, and the structure that the zero sequence transformers are arranged on the wiring of the N line and the wiring of the L line only is replaced in the prior art, so that the detection of the leakage signals inside the plug is more comprehensive and reliable.

Drawings

The utility model has the following drawings:

FIG. 1 is an external construction diagram of the present utility model;

FIG. 2 is a view of the utility model with the top cover and circuit board removed;

FIG. 3 is a view of the utility model with the upper housing cover and a portion of the housing base removed;

FIG. 4 is a view from another perspective of FIG. 3;

FIG. 5 is a view from another perspective of FIG. 4;

FIG. 6 is a view of FIG. 4 with parts removed;

FIG. 7 is a block diagram of a drive rod and L-shaped drive plate of the present utility model;

fig. 8 is a structural view of the N-wire tab, L-wire tab and temperature sensor of the present utility model.

Detailed Description

As shown in the figure, the leakage socket disclosed by the utility model comprises an outer shell, wherein a first movable reed 17, a second movable reed 22 and a coil assembly which are electrically connected with a circuit board 7 are arranged in the outer shell, an N-line inserting sheet 11, an L-line inserting sheet 12 and a G-line inserting sheet 13 are also arranged on the outer shell, a first movable contact 15 is arranged on the first movable reed 17, a second movable contact 23 is arranged on the second movable reed 22, a first fixed contact 10 matched with the first movable contact 15 is arranged on the N-line inserting sheet 11, a second fixed contact 24 matched with the second movable contact 23 is arranged on the L-line inserting sheet 12, a lifting seat 9 is also arranged at two ends of the lifting seat 9, a pressing part 16 capable of pressing the first movable reed and the second movable reed is arranged at the middle part of the lifting seat 9 in a penetrating way, one end of the driving rod 8 is connected with a button 3, the driving rod 8 is matched with a first spring 29, in particular, one end of the first spring 29 is tightly pressed against the button 3, the other end is tightly pressed on a shell seat 36 fixedly arranged in the outer shell body, a slot 34 is arranged on the lifting seat 9, a coil assembly is provided with a coil shell 33, a coil is arranged in the coil shell 33, the coil is wound on a coil frame, a movable iron core 32 is movably arranged in the coil frame, an annular groove 31 is arranged on the movable iron core 32, the L-shaped transmission plate 30 is further included, one end of the L-shaped transmission plate 30 is movably clamped into the annular groove 31, the other end of the L-shaped transmission plate 30 can be inserted into the slot 34, a clamping groove 35 is arranged on the transmission rod 8, the L-shaped transmission plate 30 can be clamped into the clamping groove 35, a movable seat 14 is arranged on the lifting seat 9, a second spring 26 is arranged between the lifting seat 9 and the movable seat 14, a third movable contact 27 is arranged on the movable seat 14, a third fixed contact 28 matched with the third movable contact 27 is arranged on the circuit board 7, and a G-wire inserting sheet 13 is electrically connected with the circuit board 7 through a conducting strip 25, the lifting seat 9 is provided with a temperature sensor 18, the temperature sensor 18 is electrically connected with the circuit board, and the temperature sensor is in contact fit with corresponding extension parts on the N-line inserting sheet 11 and the L-line inserting sheet 12. By arranging the temperature sensor 18, the temperature inside the plug can be detected, particularly the temperature of the N-line plug-in sheet and the L-line plug-in sheet, and when the temperature is too high, information can be fed back to the circuit board 7 in time, and the coil assembly is controlled to act so as to break a circuit. The outer shell is provided with an upper shell cover 1 and a lower shell cover 4, a sealing ring 29 is arranged between the upper shell cover 1 and the lower shell cover 4, and the lower shell cover 4 is also provided with a sealing ring at the positions corresponding to the N line inserting piece 11, the L line inserting piece 12 and the G line inserting piece 13. An N-wire wiring 5 electrically connected with the first movable reed 17, an L-wire wiring 6 electrically connected with the second movable reed 22 and a G-wire wiring 20 electrically connected with the movable seat 14 are arranged in the outer shell, the N-wire wiring 5 and the L-wire wiring 6 penetrate through a first zero-sequence transformer 21, the G-wire wiring 20 penetrates through a second zero-sequence transformer 19, and the first zero-sequence transformer and the second zero-sequence transformer are electrically connected with the circuit board 7. The shell body is also provided with an analog button 2 for inputting an analog leakage signal, so as to detect the leakage detection function of the plug.

The working principle of the utility model is as follows: in the normal use state, the movable iron core 32 of the coil assembly stretches out and drives one end of the L-shaped transmission plate to be inserted into the slot 34 of the lifting seat 9, meanwhile, the L-shaped transmission plate is clamped into the clamping groove 35 on the transmission rod 8, positioning between the lifting seat 9 and the transmission rod 8 is achieved, the first spring 29 between the lifting seat 9 and the button 3 is in a pressed state, the lifting seat 9 is in a high position, the pressing parts 16 at two ends of the lifting seat can drive one ends of the first movable spring and the second movable spring to lift, so that the first movable contact and the second movable contact are contacted with the first fixed contact and the second fixed contact, connection of N lines and L lines is achieved, meanwhile, the third movable contact 27 on the movable seat 14 is also contacted with the third fixed contact 28 on the circuit board 7, connection of G lines is achieved, when a zero sequence transformer detects a leakage signal, information is fed back to the circuit board 7, the circuit board 7 can electrify coils in the coil assembly, the L-shaped transmission plate 30 is driven to be separated from the clamping groove of the transmission rod 8, but the L-shaped transmission plate 30 is still partially inserted into the slot 34 on the lifting seat 9, then the lifting seat 9 is extruded by the first movable contact spring and the second movable contact spring and descends, meanwhile, the L-shaped transmission plate is driven to descend, and the separation of the first movable contact spring and the second movable contact spring is realized, in addition, as the second spring 27 is arranged between the lifting seat 9 and the movable seat 14, in the descending process of the lifting seat 9, the second spring 27 exerts an acting force to drive the movable seat 14 to lift a certain distance, so that the third movable contact spring and the third fixed contact spring can be separated later than the first movable contact spring and the second movable contact spring, the disconnected electricity safety is further ensured, and after the circuit is overhauled, the movable iron core 32 stretches out under the action of the reset spring in the coil assembly, at this time, the button 3 can be pressed and the first spring 29 is extruded to drive the transmission rod 8 to descend to a certain height, so that the L-shaped transmission plate is clamped into the clamping groove 35 on the transmission rod 8 again, then the button 3 is loosened, the first spring 29 drives the button 3 and the transmission rod 8 to ascend and simultaneously drives the L-shaped transmission plate 30 and the lifting seat 9 to ascend, so that the extrusion part 16 of the push rod can extrude the first movable reed and the second movable reed to ascend, the first movable contact and the second movable contact are contacted with the first fixed contact and the second fixed contact, the connection of the N line and the L line is realized, and in the ascending process of the lifting seat 9, the movable seat 14 is lifted to a certain height due to the action of the second spring 27 and extrudes the second spring 27 along with the ascending of the lifting seat 9, so that the third movable contact and the third fixed contact can contact are contacted earliest, the connection of the G line is realized, and the electricity safety after the subsequent connection of the L line and the N line is ensured.

According to the structure, when the leakage signal is generated and the disconnection is controlled, the disconnection of the G line can be synchronously realized, the potential safety hazard of residual current of the G line is avoided, meanwhile, the G line can be disconnected after being disconnected when being connected, namely, the N line and the L line are firstly closed and then the N line and the L line are disconnected, and the electricity safety is further ensured.

Claims (4)

1. The utility model provides a leakage socket, includes the shell body be provided with first movable reed, second movable reed and the coil pack of being connected with the circuit board electricity in the shell body, still be provided with N line inserted sheet, L line inserted sheet and G line inserted sheet on the shell body, be provided with first movable contact on the first movable reed, be provided with the second movable contact on the second movable reed, be provided with on the N line inserted sheet with first movable contact complex first stationary contact, be provided with on the L line inserted sheet with second movable contact complex second stationary contact, its characterized in that still includes the elevating seat, the both ends of elevating seat have the extrusion part that can extrude first, second movable reed action, the transfer line is worn to be equipped with in the middle part of elevating seat, the one end of transfer line is connected with the button, transfer line and first spring fit, the last slot that has been seted up of elevating seat, still include L shape drive plate on the movable iron core of coil pack, the one end activity card of L shape drive plate is gone into in the slot, the other end can insert in the slot, be provided with on the transfer line card slot, the L shape drive plate has the third movable contact, the third movable contact has the upper end has the movable contact to be connected with the third movable contact.

2. The leakage socket of claim 1, wherein the lifting base is provided with a temperature sensor, and the temperature sensor is electrically connected with the circuit board.

3. The leakage socket of claim 1, wherein the outer housing has an upper housing cover and a lower housing cover, a sealing ring is disposed between the upper housing cover and the lower housing cover, and the lower housing cover is also provided with a sealing ring at a position corresponding to the N-wire insertion piece, the L-wire insertion piece and the G-wire insertion piece.

4. The leakage socket of claim 1, wherein the outer housing is provided with an N-wire connection electrically connected to the first movable contact, an L-wire connection electrically connected to the second movable contact, and a G-wire connection electrically connected to the movable seat, the N-wire connection and the L-wire connection passing through the first zero-sequence transformer, the G-wire connection passing through the second zero-sequence transformer, the first and second zero-sequence transformers being electrically connected to the circuit board.