CN213845728U

CN213845728U - Leakage protection safety socket with improved structure

Info

Publication number: CN213845728U
Application number: CN202120051324.3U
Authority: CN
Inventors: 徐利军
Original assignee: Changshu Sijiadeng Electric Co ltd
Current assignee: Changshu Sijiadeng Electric Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-07-30
Anticipated expiration: 2031-01-08

Abstract

The utility model provides a structure improvement's earth-leakage protection safety socket, includes the drain pan, and the upper portion of drain pan has a bottom shell connecting plate, establishes earth-leakage protection module in the holding intracavity of drain pan, and there is the circuit board on earth-leakage protection module's upper portion, and the upper cover is installed on the upper portion of drain pan, nested panel on the drain pan connecting plate, establishes the tripolar jack on the panel, and the bottom of drain pan establishes tripolar jack L utmost point, the utmost point plug bush of N and ground wire plug bush on the surface, characteristics: the bottom surface of the accommodating cavity of the bottom shell is provided with an L pole plug bush connecting sheet and an N pole plug bush connecting sheet, one end of the L pole plug bush connecting sheet and one end of the N pole plug bush connecting sheet are respectively provided with an L pole plug bush input sheet and an N pole plug bush input sheet, the circuit board is provided with an L pole output welding hole and an N pole output welding hole, and the upper parts of the L pole plug bush input sheet and the N pole plug bush input sheet are respectively provided with an L pole plug bush input head and an N pole plug bush input head which are respectively embedded in the L pole output welding hole and the N pole output welding hole and are mutually welded. The accommodating cavity of the bottom shell is neat and clean without electric wires, the layout is reasonable, the operation reliability is improved, meanwhile, the assembly procedures are reduced, and the production cost is reduced; the parts are simple to connect and convenient to install and maintain.

Description

Leakage protection safety socket with improved structure

Technical Field

The utility model belongs to the technical field of safe socket, concretely relates to improved structure's earth leakage protection safety socket.

Background

With the continuous development of social economy, household appliances have gone into thousands of households and become indispensable articles in daily life of people. In order to prevent safety accidents caused by electric leakage of electric appliances, people usually install an electric leakage protection switch on an input bus at home, and the safety hazard of electric leakage is solved through the electric leakage protection switch. But has the following disadvantages: because only one leakage protection switch is arranged on the whole household line, when a certain electric appliance leaks electricity, the whole bus line can be completely cut off due to the disconnection of the leakage protection switch, so that other electric appliances can not operate, and even a single electric appliance is damaged due to sudden power failure.

In order to solve the problems, existing safety socket manufacturers make a lot of attempts to reform the existing sockets in a certain structure, and design intelligent leakage protection sockets capable of timely cutting off the power supply inside the sockets when leakage occurs. The existing earth leakage protection socket is mostly composed of a bottom shell, a panel and an earth leakage protection module arranged in the bottom shell, an L-pole plug bush, an N-pole plug bush and a ground wire plug for inserting an electrical appliance plug are also arranged on the bottom shell, the earth leakage protection module is composed of an external power input terminal, a circuit board and a tripping device, an external power supply is input into the earth leakage protection module through the external power input terminal, and the external power input terminal is electrically conducted with the circuit board when the tripping device is switched on. The related technical information about the tripping device can be seen in a leakage protector related to chinese invention No. CN 107818890B, in which the L-pole plug bush and the N-pole plug bush are electrically connected to the circuit board through wires, when the electrical appliance generates leakage, the leakage protection module automatically disconnects the tripping device, and the circuit board of the external power input terminal is disconnected, thereby disconnecting the L-pole plug bush and the N-pole plug bush from the circuit board. The leakage protection socket has the following problems: because the L-pole plug bush and the N-pole plug bush are electrically communicated with the circuit board through the wires, if the installation is unreasonable or the installation is not carried out according to the regulation steps, the interior of the bottom shell is very disordered, the wires can be wound on various components, the operation reliability cannot be guaranteed, the assembly process of the installed wires is very complicated, and the production cost is also very high.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the existing earth leakage protection safety socket structure. Therefore, the applicant has made active and effective researches and finally has developed the technical solutions to be described below.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, have independent earth leakage protection function to be favorable to directly realizing electrical connection and need not electric wire connection and then reach socket inside clean and tidy reliable and rationally distributed and improve operational reliability's institutional advancement's earth leakage protection safety socket between plug bush and the earth leakage protection module.

The utility model aims to achieve the purpose, a leakage protection safety socket with improved structure, which comprises a bottom shell with a containing cavity, a bottom shell connecting plate with a rectangular structure is formed at the upper part of the bottom shell, a leakage protection module is arranged in the containing cavity of the bottom shell, a circuit board is formed at the upper part of the leakage protection module, an upper cover is arranged at the upper part of the containing cavity of the bottom shell and at the middle part corresponding to the bottom shell connecting plate, a panel is nested on the bottom shell connecting plate, a tripolar jack is arranged on the panel, a tripolar jack L pole plug bush, a tripolar jack N pole plug bush and a ground wire plug bush which correspond to the tripolar jack are arranged on the bottom surface of the containing cavity of the bottom shell, an L pole plug bush connecting sheet for realizing electrical connection with the tripolar jack L pole plug bush is formed on the bottom surface of the containing cavity of the bottom shell, an L pole plug bush input sheet is formed at the upward direction of one end of the L pole plug bush connecting sheet far away from the L pole plug bush of the tripolar jack; similarly, an N-pole plug bush connecting sheet for realizing electrical connection with the N-pole plug bush of the three-pole jack is formed on the bottom surface of the accommodating cavity of the bottom shell, an N pole plug bush input sheet is formed on the N pole plug bush connecting sheet at the end far away from the N pole plug bush of the three pole jack, an L pole output welding hole and an N pole output welding hole are respectively arranged on the circuit board and at the positions corresponding to the L pole plug bush input sheet and the N pole plug bush input sheet, and an L pole plug bush input head and an N pole plug bush input head are respectively formed at the upper parts of the L pole plug bush input sheet and the N pole plug bush input sheet in the height direction, the L-pole plug bush input head and the N-pole plug bush input head are respectively embedded in the L-pole output welding hole and the N-pole output welding hole and connected in a tin welding mode, and therefore the L-pole plug bush input sheet and the N-pole plug bush input sheet are electrically connected with the circuit board.

In a specific embodiment of the present invention, the lower portion of the earth leakage protection module is respectively provided with an L-pole connection terminal and an N-pole connection terminal, the bottom plate of the bottom case and the positions corresponding to the L-pole connection terminal and the N-pole connection terminal are respectively provided with an internal hollow L-pole connection terminal seat and an internal hollow N-pole connection terminal seat, when in use, the L-pole connection terminal passes through the bottom plate of the bottom case and is accommodated in the L-pole connection terminal seat, and the N-pole connection terminal also passes through the bottom plate of the bottom case and is accommodated in the N-pole connection terminal seat.

In another specific embodiment of the present invention, a button protection case with a strip shape protruding downward is formed on the panel, a button protection case bottom plate is formed at a lower portion of the button protection case, a reset button through hole and a test button through hole are respectively formed on the button protection case bottom plate and along a length direction thereof, and the reset button through hole and the test button through hole are all penetrated through a thickness direction of the button protection case bottom plate, a reset button with a cylindrical shape structure is provided on a circuit board of the earth leakage protection module, the reset button passes upward through the upper cover and the through hole of the reset button through hole, the button protection case bottom plate is received in the button protection case, and the upper cover is provided with a test button with a cylindrical shape structure on a side surface thereof, the test button passes upward through the through hole of the test button through hole and then extends out the button protection case bottom plate and is received in the button protection case bottom plate The button is arranged in the protective shell.

In another specific embodiment of the present invention, a two-pole jack is disposed on the panel, and a two-pole jack L-pole plug bush and a two-pole jack N-pole plug bush corresponding to the two-pole jack are disposed on the bottom surface of the accommodating cavity of the bottom casing, the L-pole plug bush connecting piece and the two-pole jack L-pole plug bush constitute an electrical connection, and the N-pole plug bush connecting piece and the two-pole jack N-pole plug bush constitute an electrical connection.

The utility model discloses a further concrete embodiment the upper cover and corresponding to the position department of button protective housing is formed with a button protective housing storage tank, experimental button sets up in button protective housing storage tank, and when in service condition, the button protective housing cooperatees with this button protective housing storage tank, in this button protective housing storage tank and corresponding to a reset button jack has been seted up to the position department of reset button.

In yet another specific embodiment of the present invention, a test button electrical connection is provided on the circuit board and at a lower position corresponding to the test button.

In yet another specific embodiment of the present invention, an indicator holding hole is formed in a bottom plate of the button protection case of the panel at a position between the reset button through hole and the test button through hole, and the indicator holding hole runs through a thickness direction of the bottom plate of the button protection case, a power indicator is disposed on a surface of the circuit board facing the upper side and corresponding to the position of the indicator holding hole, and a power indicator jack running through the thickness direction of the power indicator is formed in the position of the power indicator, and the power indicator penetrates the indicator jack upwards and then enters the indicator holding hole and is held in the indicator holding hole.

In a more specific embodiment of the present invention, a trip device is disposed in the earth leakage protection module and between the L-pole connection terminal, the N-pole connection terminal and the circuit board.

The present invention provides a portable electronic device, which comprises a base case, a plurality of upper cover locking legs, a plurality of upper cover locking grooves, a plurality of locking pins, and a plurality of locking pins, wherein the upper cover locking legs are arranged on the upper end of the base case, and the locking pins are arranged on the upper end of the base case.

In a still more specific embodiment of the present invention, a circle of panel positioning steps is formed at a lower edge of the bottom casing connecting plate of the bottom casing, the panel is nested on the bottom casing connecting plate, and a surface of the panel facing a next side is attached to the panel positioning steps.

The utility model discloses owing to adopt behind the above-mentioned structure, beneficial effect who has: by arranging the L-pole plug bush connecting sheet and the N-pole plug bush connecting sheet, the L-pole plug bush and the N-pole plug bush of the three-pole jack are directly and electrically connected with the output end of the leakage protection module, so that the accommodating cavity of the bottom shell is neat and clean without electric wires, the layout is reasonable, the operation reliability is improved, the assembly process is reduced, the production cost is greatly reduced, and the independent leakage protection function is realized; in addition, the parts are simple to connect, and the installation and maintenance are very convenient.

Drawings

Fig. 1 is an exploded perspective view of an embodiment of the present invention.

Fig. 2 is a schematic front structural view of the embodiment shown in fig. 1.

Fig. 3 is a schematic plan view of the internal structure of the embodiment shown in fig. 1.

Fig. 4 is a schematic front view of another embodiment of the present invention.

Fig. 5 is a schematic plan view of the internal structure of the embodiment shown in fig. 4.

In the figure: 1. the structure comprises a bottom shell, 11 accommodating cavities, 111 upper cover positioning steps, 112 upper cover buckling grooves, 12 bottom shell connecting plates, 121 panel positioning steps, 13.L pole wiring terminal seats and 14.N pole wiring terminal seats; 2. the circuit board comprises a leakage protection module, 21. a circuit board, 211. an L pole output welding hole, 212. an N pole output welding hole, 213. a test button electrical connector, 214. a power indicator, 22. an L pole wiring terminal, 23. an N pole wiring terminal, 24. a reset button and 25. a tripping device; 3. the test button comprises an upper cover, a button protective shell accommodating groove, a button reset button jack, an indicator light jack and an upper cover buckling pin, wherein the button protective shell accommodating groove is 321; 4. the test button comprises a panel, 41 three-pole jacks, 42 button protective shells, 421 button protective shell bottom plates, 4211 reset button through holes, 4212 test button through holes, 4213 indicator lamp containing holes and 43 two-pole jacks; 5. the three-pole jack comprises a three-pole jack L-pole plug bush, a 51. L-pole plug bush connecting sheet, a 52. L-pole plug bush input sheet and a 521. L-pole plug bush input head; 6, a tripolar jack N pole plug bush, 61.N pole plug bush connecting sheets, 62.N pole plug bush input sheets and 621.N pole plug bush input heads; 7. a ground wire plug bush; 8, inserting a two-pole jack L-pole plug bush; and 9. a two-pole jack N-pole plug bush.

Detailed Description

The applicant shall now make the following detailed description by way of example, but the description of the example is not intended to limit the technical solution of the present invention, and any equivalent changes made according to the inventive concept, which are merely formal and insubstantial, should be considered as the scope of the technical solution of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are in the position state of fig. 1, and thus, should not be interpreted as a specific limitation to the technical solution provided by the present invention.

Example one

Referring to fig. 1 to 3, an earth leakage protection safety socket with an improved structure is shown, which includes a bottom case 1 having a receiving cavity 11, a bottom case connecting plate 12 formed on an upper portion of the bottom case 1 and having a rectangular shape, an earth leakage protection module 2 disposed in the receiving cavity 11 of the bottom case 1, a circuit board 21 formed on an upper portion of the earth leakage protection module 2, an upper cover 3 mounted on an upper portion of the receiving cavity 11 of the bottom case 1 and corresponding to a middle portion of the bottom case connecting plate 12, a panel 4 nested on the bottom case connecting plate 12, a three-pole jack 41 disposed on the panel 4, and a three-pole jack L-pole plug 5, a three-pole jack N-pole plug 6 and a ground plug 7 disposed on a bottom surface of the receiving cavity 11 of the bottom case 1 and corresponding to the three-pole jack 41.

As the technical scheme provided by the utility model: an L-pole plug bush connecting piece 51 for electrically connecting with the L-pole plug bush 5 of the three-pole jack is formed on the bottom surface of the accommodating cavity 11 of the bottom shell 1, and an L-pole plug bush input piece 52 is formed at one end of the L-pole plug bush connecting piece 51 far away from the L-pole plug bush 5 of the three-pole jack and faces upwards; similarly, an N-pole socket connecting piece 61 for electrically connecting with the N-pole socket 6 of the three-pole jack is formed on the bottom surface of the receiving cavity 11 of the bottom case 1, an N-pole socket input piece 62 is formed on the N-pole socket connecting piece 61 facing upward from one end of the N-pole socket 6 of the three-pole jack, an L-pole output weld hole 211 and an N-pole output weld hole 212 are respectively formed on the circuit board 21 and at positions corresponding to the L-pole socket input piece 52 and the N-pole socket input piece 62, an L-pole socket input header 521 and an N-pole socket input header 621 are respectively formed on the upper portions of the L-pole socket input piece 52 and the N-pole socket input piece 62 in the height direction, the L-pole socket input header 521 and the N-pole socket input header 621 are respectively embedded in the L-pole output weld hole 211 and the N-pole output weld hole 212 and are connected by tin welding, thereby achieving the electrical connection of the L-pole jack input piece 52 and the N-pole jack input piece 62 with the circuit board 21.

In this embodiment, an L-pole terminal 22 and an N-pole terminal 23 are respectively disposed at the lower portion of the earth leakage protection module 2, and an L-pole terminal base 13 and an N-pole terminal base 14 which are hollow inside are respectively disposed on the bottom plate of the bottom case 1 and at positions corresponding to the L-pole terminal 22 and the N-pole terminal base 23, when in use, the L-pole terminal 22 passes through the bottom plate of the bottom case 1 and is accommodated in the L-pole terminal base 13, and the N-pole terminal 23 also passes through the bottom plate of the bottom case 1 and is accommodated in the N-pole terminal base 14; the L-pole terminal 22 is electrically connected to a power supply live wire of external power, and the N-pole terminal 23 is electrically connected to a power supply neutral wire of external power.

Referring to fig. 1 and fig. 5, a button protection case 42 protruding downward and having a strip shape is formed on the panel 4, a button protection case bottom plate 421 is formed at the lower portion of the button protection case 42, a reset button through hole 4211 and a test button through hole 4212 are respectively formed on the button protection case bottom plate 421 along the length direction thereof, the reset button through hole 4211 and the test button through hole 4212 both penetrate the thickness direction of the button protection case bottom plate 421, a reset button 24 having a cylindrical shape structure is disposed on the circuit board 21 of the earth leakage protection module 2, the reset button 24 protrudes out of the button protection case bottom plate 421 after penetrating through the through holes of the upper cover 3 and the reset button through hole 4211, and is accommodated in the button protection case 42, and a test button 31 having a cylindrical shape structure is disposed on the upper cover 3 facing the upper side surface, the test button 31 is inserted upward through the through hole of the test button through hole 4212, and then protrudes out of the button protection case bottom 421 and is accommodated in the button protection case 42. In the embodiment, after the test button 31 is pressed, the test button 31 contacts the test button electrical connector 213 disposed on the circuit board 21, and at this time, further, a button protection housing receiving groove 32 is formed on the upper cover 3 at a position corresponding to the button protection housing 42, the test button 31 is disposed in the button protection housing receiving groove 32, the button protection housing 42 is engaged with the button protection housing receiving groove 32 in the use state, and a reset button jack 321 is disposed in the button protection housing receiving groove 32 at a position corresponding to the reset button 24.

Further, a test button electrical connector 213 is provided on the aforementioned circuit board 21 and at a lower position corresponding to the aforementioned test button 31.

In this embodiment, an indicator lamp receiving hole 4213 is formed in the bottom plate 421 of the button protection case of the panel 4 at a position between the reset button through hole 4211 and the test button through hole 4212, the indicator lamp receiving hole 4213 penetrates through the thickness direction of the bottom plate 421 of the button protection case, a power indicator lamp 214 is disposed on an upper surface of the circuit board 21 facing the upper surface and at a position corresponding to the indicator lamp receiving hole 4213, an indicator lamp insertion hole 33 penetrating through the thickness direction of the power indicator lamp 214 is formed in the upper cover 3 and at a position corresponding to the power indicator lamp 214, and the power indicator lamp 214 penetrates through the indicator lamp insertion hole 33 upward and then protrudes into the indicator lamp receiving hole 4213 and is received in the indicator lamp receiving hole 4213.

Further, a trip device 25 is disposed in the earth leakage protection module 2 and between the L-pole connection terminal 22, the N-pole connection terminal 23 and the circuit board 21, the trip device 25 can be switched on by pressing the reset button 24, when the trip device 25 is switched on, the L-pole connection terminal 22 and the N-pole connection terminal 23 can be electrically connected to the circuit board 21, and after pressing the test button 31, the test button 31 contacts a test button electrical connection 213 disposed on the circuit board 21, at this time, a test loop on the circuit board 21 is switched on, at this time, the trip device 25 is switched off, and the L-pole connection terminal 22 and the N-pole connection terminal 23 can be disconnected from the circuit board 21; when the electrical appliance leaks electricity, the tripping device 25 can be quickly disconnected by the leakage protection module, and the L-pole wiring terminal 22 and the N-pole wiring terminal 23 can be automatically disconnected with the circuit board 21.

Further, an upper cover positioning step 111 is formed in the accommodating cavity 11 of the bottom housing 1 and at a position corresponding to the upper end of the bottom housing in the height direction, a plurality of upper cover engaging legs 34 are respectively formed on the left and right side surfaces of the upper cover 3 facing downward, and a plurality of upper cover engaging grooves 112 for engaging with the upper cover engaging legs 34 are formed in the accommodating cavity 11 and at a position corresponding to the lower position of the upper cover positioning step 111.

Preferably, a circle of panel positioning steps 121 is formed at the lower edge of the bottom case connecting plate 12 of the bottom case 1, the panel 4 is nested on the bottom case connecting plate 12, and the downward facing side surface of the panel 4 contacts with the panel positioning steps 121.

The working principle is as follows: firstly, a user presses a reset button 24, at the moment, a tripping device 25 in the leakage protection module 2 is switched on, an L-pole wiring terminal 22, an N-pole wiring terminal 23 and the circuit board 21 are electrically connected, an external power supply is input through the L-pole wiring terminal 22 and the N-pole wiring terminal 23 of the leakage protection module 2, and inputs power to a three-pole jack L-pole plug bush 5 and a three-pole jack L-pole plug bush 6 through connection of an L-pole output welding hole 211, an N-pole output welding hole 212, an L-pole plug bush connecting sheet 51 and an N-pole plug bush connecting sheet 61, power supply to a socket is completed, and at the moment, a power indicator lamp 214 is turned on; after the user inserts the three-pole plug of the electric appliance into the three-pole jack 41 on the panel, the plug contacts with the three-pole jack L-pole plug bush 5, the three-pole jack L-pole plug bush 6, and the three-pole jack ground wire plug bush 7, thereby completing the power supply to the electric appliance. Once after the plug takes place the electric leakage as the electrical apparatus in the tripolar jack, earth leakage protection switch 2 can break open trip gear 25 rapidly for utmost point binding post 22, N utmost point binding post 23 and aforementioned circuit board 21 disconnection, thereby make electric power unable to carry to tripolar jack L utmost point plug bush 5 and tripolar jack L utmost point plug bush 6, power indicator 214 extinguishes this moment, from this quick cut-off electrical apparatus power, played the effect of earth leakage protection.

Example two

Referring to fig. 4 and 5, in the present embodiment, a two-pole jack 43 is further disposed on the panel 4, and a two-pole jack L-pole socket 8 and a two-pole jack N-pole socket 9 corresponding to the two-pole jack 43 are disposed on the bottom surface of the accommodating cavity 11 of the bottom case 1, and the L-pole socket connecting piece 51 and the two-pole jack L-pole socket 8 form an electrical connection, and the N-pole socket connecting piece 61 and the two-pole jack N-pole socket 9 form an electrical connection. As shown in fig. 5, one end of the L-pole socket connecting piece 51 is connected to the L-pole socket 8 of the two-pole jack, the other end of the L-pole socket connecting piece 51 is formed as an L-pole socket input piece 52 and connected to the L-pole output solder hole 211, the L-pole socket 5 of the three-pole jack is disposed on the L-pole socket connecting piece 51, that is, the L-pole socket connecting piece 51 passes through and is connected to the L-pole socket 5 of the three-pole jack, one end of the N-pole socket connecting piece 61 is connected to the N-pole socket 9 of the two-pole jack, the other end of the N-pole socket connecting piece 61 is formed as an N-pole socket input piece 62 and is connected to the N-pole output solder hole 212, and the N-pole socket 9 of the two-pole jack is disposed on the N-pole socket connecting piece 61, that is, the N-pole socket connecting piece 61 passes through and is connected to the N-pole socket 9 of the two-pole jack. In this embodiment, the technical features are the same as those described in the first embodiment, except that the technical features are different from those of the first embodiment.

To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.

Claims

1. The utility model provides a leakage protection safety socket with improved structure, is including a drain pan (1) that has holding chamber (11), is formed with a drain pan connecting plate (12) that is the rectangle shape structure on the upper portion of this drain pan (1), be provided with a leakage protection module (2) in holding chamber (11) of drain pan (1), be formed with a circuit board (21) on the upper portion of this leakage protection module (2), locate and install an upper cover (3) in the middle part position that corresponds to drain pan connecting plate (12) in the upper portion position department of holding chamber (11) of this drain pan (1) a panel (4) is nested on drain pan connecting plate (12), is provided with tripolar jack (41) on this panel (4), and be provided with tripolar jack L utmost point plug bush (5) corresponding to this tripolar jack (41) on the bottom surface of holding chamber (11) of drain pan (1), Tripolar jack N utmost point plug bush (6) and ground wire plug bush (7), its characterized in that: an L-pole plug bush connecting sheet (51) for realizing electrical connection with an L-pole plug bush (5) of a three-pole jack is formed on the bottom surface of the accommodating cavity (11) of the bottom shell (1), and an L-pole plug bush input sheet (52) is formed at one end, far away from the L-pole plug bush (5), of the L-pole plug bush connecting sheet (51) in an upward direction; similarly, an N-pole plug bush connecting piece (61) for electrically connecting with a three-pole jack N-pole plug bush (6) is formed on the bottom surface of the accommodating cavity (11) of the bottom shell (1), an N-pole plug bush input piece (62) is formed at one end, far away from the three-pole jack N-pole plug bush (6), of the N-pole plug bush connecting piece (61), an L-pole output welding hole (211) and an N-pole output welding hole (212) are respectively formed on the circuit board (21) and at positions corresponding to the L-pole plug bush input piece (52) and the N-pole plug bush input piece (62), an L-pole plug bush input head (521) and an N-pole plug bush input head (621) are respectively formed at the upper parts of the L-pole plug bush input piece (52) and the N-pole plug bush input piece (62) in the height direction, the L-pole plug bush input head (521) and the N-pole plug bush input head (621) are respectively embedded in the L-pole output welding hole (211) and the N-pole output welding hole (212) and the N-pole plug bush input head (621) are respectively embedded in the L-pole output welding hole (211) and the N-pole output welding hole (621) The L-pole and N-pole plug bush input pieces (52, 62) are connected by soldering, thereby realizing the electrical connection between the circuit board (21).

2. An earth leakage protection safety socket with improved structure according to claim 1, characterized in that an L-pole terminal (22) and an N-pole terminal (23) are respectively provided at the lower part of the earth leakage protection module (2), an internally hollow L-pole terminal block (13) and an internally hollow N-pole terminal block (14) are respectively provided on the bottom plate of the bottom shell (1) and at positions corresponding to the L-pole terminal (22) and the N-pole terminal block (23), when in use, the L-pole terminal (22) passes through the bottom plate of the bottom shell (1) and is accommodated in the L-pole terminal block (13), and the N-pole terminal (23) also passes through the bottom plate of the bottom shell (1) and is accommodated in the N-pole terminal block (14).

3. The earth leakage protection safety socket as claimed in claim 1, wherein a button protection case (42) protruding downward and having a bar shape is formed on the panel (4), a button protection case bottom plate (421) is formed at a lower portion of the button protection case (42), a reset button through hole (4211) and a test button through hole (4212) are respectively formed on the button protection case bottom plate (421) along a length direction thereof, the reset button through hole (4211) and the test button through hole (4212) both penetrate a thickness direction of the button protection case bottom plate (421), a reset button (24) having a cylindrical shape is disposed on the circuit board (21) of the earth leakage protection module (2), the reset button (24) penetrates through the through holes of the upper cover (3) and the reset button through hole (4211) upward, protrudes out of the button protection case bottom plate (421) and is accommodated in the button protection case (42) And a test button (31) which is in a cylindrical shape structure is arranged on the surface of the upper cover (3) facing the upper side, and the test button (31) also protrudes out of the button protection shell bottom plate (421) after passing through the through hole of the test button through hole (4212) upwards and is accommodated in the button protection shell (42).

4. The earth leakage protection safety socket with improved structure as claimed in claim 1, wherein a two-pole jack (43) is provided on the faceplate (4), and a two-pole jack L-pole plug bush (8) and a two-pole jack N-pole plug bush (9) corresponding to the two-pole jack (43) are provided on the bottom surface of the receiving cavity (11) of the bottom case (1), the L-pole plug bush connecting piece (51) and the two-pole jack L-pole plug bush (8) form an electrical connection, and the N-pole plug bush connecting piece (61) and the two-pole jack N-pole plug bush (9) form an electrical connection.

5. A structurally improved earth leakage protection safety socket as claimed in claim 3, wherein a button protection case receiving groove (32) is formed on said upper cover (3) at a position corresponding to said button protection case (42), said test button (31) is disposed in said button protection case receiving groove (32), said button protection case (42) is fitted in said button protection case receiving groove (32) in a use state, and a reset button insertion hole (321) is formed in said button protection case receiving groove (32) at a position corresponding to said reset button (24).

6. A structurally improved earth leakage protection safety socket as claimed in claim 3, wherein a test button electrical connector (213) is provided on said circuit board (21) at a lower position corresponding to said test button (31).

7. A structurally improved earth leakage protection safety socket as claimed in claim 3, wherein an indicator lamp receiving hole (4213) is formed on the button protection case bottom plate (421) of said face plate (4) at a position between said reset button through hole (4211) and said test button through hole (4212), the indicator lamp accommodating hole (4213) penetrates through the thickness direction of the bottom plate (421) of the button protection shell, a power source indicator (214) is provided on an upward-facing side surface of the circuit board (21) and at a position corresponding to the indicator receiving hole (4213), and an indicator lamp insertion hole (33) penetrating through the thickness direction is formed on the upper cover (3) and at a position corresponding to the power indicator lamp (214), the power supply indicator lamp (214) upwards penetrates through the indicator lamp jack (33) and then extends into the indicator lamp accommodating hole (4213) and is accommodated in the indicator lamp accommodating hole (4213).

8. A residual-current safety socket according to claim 1, characterised in that a tripping device (25) is arranged in the residual-current protection module (2) between the L-pole connection terminal (22), the N-pole connection terminal (23) and the circuit board (21).

9. The earth leakage protection safety socket with improved structure as claimed in claim 1, wherein a top cover positioning step (111) is formed in the receiving cavity (11) of the bottom housing (1) and at a position corresponding to the height direction of the top end, a plurality of top cover locking legs (34) are respectively formed on the left and right side surfaces of the top cover (3) facing downward, and a plurality of top cover locking grooves (112) which are in snap fit with the top cover locking legs (34) are formed in the receiving cavity (11) and at a position corresponding to the bottom end of the top cover positioning step (111).

10. An earth leakage protection safety socket as claimed in claim 1, wherein a circle of panel positioning steps (121) is formed at the lower edge of the bottom case connecting plate (12) of the bottom case (1), the panel (4) is nested on the bottom case connecting plate (12), and the downward facing side surface of the panel (4) contacts with the panel positioning steps (121).