CN2419704Y

CN2419704Y - Electric leakageproof socket

Info

Publication number: CN2419704Y
Application number: CN 00233169
Authority: CN
Inventors: 李成力
Original assignee: Wenzhou Van sheen Electric Appliance Co Ltd
Current assignee: Wenzhou Van sheen Electric Appliance Co Ltd
Priority date: 2000-05-19
Filing date: 2000-05-19
Publication date: 2001-02-14
Anticipated expiration: 2010-05-19

Abstract

The utility model relates to an electric leakage protection socket, composed of a top cover, a middle supporting plate and a bottom cover. A power supply output socket, an electric leakage test button and a reset button are arranged on the top cover; a metal mounting plate is arranged between the top cover and the middle supporting plate; a pair of metal conductors are arranged on both sides in the middle supporting plate; a differential differentiating transformer, a coil, an iron core which is enwrapped in the coil, a reset key guiding assembly and a pair of elastic metal sheets are arranged on a circuit board which is arranged between the middle supporting plate and the bottom cover. The differential differentiating transformer can be used for detecting leakage current, and the contacts of the electrified elastic metal sheets and the electric contacts of the metal conductors are be switched off through the reset key guiding assembly, so that load current can be cut off, and accordingly, electric leakage protection can be realized.

Description

Earth leakage protective socket

The utility model relates to a kind of socket with creepage protection function, refers to a kind of being installed in the common metope especially, and socket and creepage protection function appearance are the earth leakage protective socket of one.

Along with improving constantly of people's living standard, household electrical appliance universal day by day, people wish urgently, when building in the room, reserve some supply sockets in the wall.But the socket of being installed in the wall of present most of rooms is common socket, does not have creepage protection function, can not directly protect electrical leakage, and easily cause the human electric shock dead.

The purpose of this utility model provides a kind of earth leakage protective socket, and this socket not only has function of socket, and has earth leakage protective, leakage tests and reset function, and is suitable for being installed in the common metope delivery casing.

For achieving the above object, the utility model adopts following design: a kind of earth leakage protective socket, comprise top cover, middle supporting plate and bottom three parts, and top cover is provided with power output socket, leakage tests button and reset key button; One metal mounting panel is installed between top cover and middle supporting plate, and the metal mounting panel is provided with grounding contact, and corresponding with the earth jack of described top cover power output socket, also is provided with an earthing screw on the metal mounting panel; In middle supporting plate, both sides are placed with the pair of metal conductor, and an electrical contact is all arranged on each metallic conductor; Putting between middle supporting plate and bottom has a circuit board, circuit board to be provided with differential differentiating transformer, coil and parcel iron core, reset key guidance set in coil; There is a central perforation upper end of reset key guidance set, and there is an opening bottom; A pair of movably elastic sheet metal is arranged on bottom end opening, an electrical contact is all arranged on each elastic sheet metal, and corresponding with the electrical contact of described metallic conductor; Vertically running through described metal mounting panel, central perforation and bottom opening in reset key guidance set inside has a guiding lock, and the bottom of guiding lock is a cone, near the bottom one lock slots is arranged, and top is with a spring, and embeds in the reset key button; Also have a lock buckling part on reset key guidance set bottom end opening, lock buckling part is

Type, there is a medium pore centre of lock buckling part, and putting between the sidewall of reset key guidance set and lock buckling part has a spring.

On reset key guidance set and the corresponding sidewall of lock buckling part, also be provided with a garden shape groove; And the conductor of both sides in the supporting plate in the middle of being placed on, the two ends of a conductor are little " V " font, the two ends of another conductor are big " U " font; Described leakage tests button by a resistance with power output end be placed in the middle of metallic conductor suspension joint in the supporting plate;

One end of elastic sheet metal links to each other with power input.

Because the utility model adopts above design; socket and earth leakage circuit-breaker appearance are one; utilize the differential differentiating transformer in the earth leakage protective socket to detect leakage current; disconnect by the electrical contact of reset key guidance set charged elastic sheet metal electrical contact and metallic conductor; cut off load current, realize creepage protection function.

Further specify below in conjunction with accompanying drawing

Fig. 1 the utility model front view;

Fig. 2 the utility model perspective exploded view;

Supporting plate front view in the middle of Fig. 3 the utility model;

Supporting plate rearview in the middle of Fig. 4 the utility model;

Fig. 5 the utility model conductor end view;

Front view behind Fig. 6 the utility model removal top cover;

Fig. 7 the utility model cartridge assemblies schematic diagram;

Fig. 8 the utility model Fig. 6 A-A cutaway view, closed loaded work piece schematic diagram;

Fig. 9 the utility model Fig. 6 A-A cutaway view, cut-out load current fundamental diagram;

As Fig. 1～shown in Figure 4, the utility model is by top cover 1, and middle supporting plate 10 and bottom 50 3 parts constitute.Top cover 1 is provided with power output socket 3,4, leakage tests button 5 (TEST) and reset key button 6 (RESET); Metal dress plate 2 (as shown in Figure 3) is installed between top cover 1 and middle supporting plate 10, and the groove 3 ', 4 ' of the grounding contact 7,8 of metal mounting panel 2 by top cover 1 links to each other with the attaching plug grounding pin; On metal mounting panel 2, also be provided with an earthing screw 9.

In middle supporting plate 10, be placed with a pair of strip metallic conductor 11 and 12 (shown in Fig. 3,5,6), the both sides of supporting plate 10 in the middle of conductor 11,12 lays respectively at, structure is basic identical, all have the clamp groove 15 and the electrical contact 16 that strike out U-shaped, its difference is that conductor 11 two ends are little " V " font receptacle 13, and conductor 12 two ends are big " U " font receptacle 14, and receptacle 13,14 corresponds respectively to top cover 1 socket 11,12 live wire and zero line jacks.

One circuit board 26 (shown in Fig. 2,4,7) is installed between middle supporting plate 10 and bottom 50.Circuit board 26 is provided with differential differentiating transformer 41 (as Fig. 8,9), coil 37, iron core 38 and reset key guidance set 27.Storing has a pair of movably

elastic sheet metal

22,23 on reset key guidance set 27, and an electrical contact 24 is arranged respectively on the

elastic sheet metal

22,23, and the position of the electrical contact 16 on electrical contact 24 and the conductor 11,12 is corresponding.

Shown in Fig. 8,9, a central perforation 28 is arranged at the top of reset key guidance set 27, and an opening 29 is arranged at the bottom, has a pair ofly movably, to be made by stainless steel material on bottom opening 29

Type lock buckling part 31, there is a medium pore 32 in the central authorities of lock buckling part 31, a circular recess 30 are being arranged, a built-in spring 39 on the sidewall of reset key guidance set 27 and between the lock buckling part 31.Vertically run through

central perforation

28 and 29 of bottom openings in reset key guidance set 27 inside, pass metal mounting panel 2 a guiding lock 33 is arranged, the bottom of guiding lock is a cone 36, near the bottom one lock slots 35 that caves in is arranged, guiding lock 33 tops are with a spring, and embed reset key 6 inside.

The utility model top cover 1, middle supporting plate 10 and bottom 50 are made by the insulating properties material, are combined into one by screw 51 to each other.As shown in Figure 7, the terminal screw 17,18 of the utility model by the insulation shell both sides links to each other with power input line, and screw 17,18 links to each other with an end of

elastic sheet metal

22,23 again, and links to each other by the differential differentiating transformer 41 in lead 19,20 and the insulation booth 21.

The utility model is realized earth leakage protective and leakage tests; the principle of reset function is: as shown in Figure 9; the utility model just often, the electrical contact of

elastic sheet metal

22,23 24 disconnects with electrical contact 16 on the conductor 11,12, earth leakage protective socket does not have voltage to export.When the user wants to use this earth leakage protective socket (as Fig. 8, shown in Figure 7); press reset button 6; guiding lock 33 medium pores 32 downward, that pass lock and parts 31 that link to each other with reset button 6 are slided in the opening 29 of reset key guidance set 27 bottoms; the lock slots 35 of guiding lock 33 locks, is entrenched in the medium pore 32 of lock buckling part 31; the electrical contact 24 of

elastic sheet metal

22,23 is electrically connected with the electrical contact 16 of conductor 11,12; earth leakage protective socket is charged, and voltage output is arranged.

The utility model utilizes differential differentiating transformer to detect leakage current and laod unbalance electric current.

As shown in Figure 9, the user can be by pushing leakage tests button 5 simulation electric leakage situations.Press leakage tests button 5; after testing button sheet 40 detects unsymmetrical current with conductor 11 and the differential differentiating transformer 41 of power input short circuit (seeing shown in Fig. 2,3); make coil 37 get electric, generation magnetic field; attract iron core 38 to move forward; promoting lock buckling part 31 moves forward; guiding lock 33 medium pores 32 from lock catch part 31 move up; reset button 6 escapes; elasticity electrical contact 24 separates with the electrical contact 16 of conductor 11,12; the disconnecting consumers electric current; power output socket is not charged, thereby realizes defencive function.

When user's desire is turn-offed earth leakage protective socket output, can reset key 6 be upspring by pushing leakage tests button 5, power cutoff output.

Claims

1, a kind of earth leakage protective socket comprises top cover, middle supporting plate and bottom three parts, and top cover is provided with power output socket, leakage tests button and reset key button, it is characterized in that:

One metal mounting panel is installed between described top cover and middle supporting plate, and the metal mounting panel is provided with grounding contact, and corresponding with the earth jack of described top cover power output socket; Also be provided with an earthing screw on the described metal mounting panel;

Both sides are placed with the pair of metal conductor in the supporting plate in the middle of described, and an electrical contact is all arranged on each metallic conductor;

Between described middle supporting plate and described bottom, put a circuit board is arranged; Described circuit board is provided with differential differentiating transformer, coil and parcel iron core, reset key guidance set in coil;

There is a central perforation upper end of described reset key guidance set, and there is an opening bottom; A pair of movably elastic sheet metal is arranged on bottom end opening, an electrical contact is all arranged on each elastic sheet metal, and corresponding with the electrical contact of described metallic conductor;

Vertically run through described metal mounting panel, central perforation and bottom opening in described reset key guidance set inside one guiding lock is arranged; The bottom of guiding lock is a cone, near the bottom one lock slots is arranged, and top is with a spring, and embeds in the described reset key button;

Also have a lock buckling part on described reset key guidance set bottom end opening, described lock buckling part be " " type, and there is a medium pore centre of lock buckling part, and storing has a spring between the sidewall of described reset key guidance set and lock buckling part.

2: earth leakage protective socket according to claim 1 is characterized in that: described reset key guidance set and the corresponding sidewall of described lock buckling part are provided with a garden shape groove.

3: earth leakage protective socket according to claim 1 is characterized in that: be placed on the conductor of both sides in the described middle supporting plate, the two ends of a conductor are little " V " font, and the two ends of another conductor are big " U " font.

4: earth leakage protective socket according to claim 1 is characterized in that: described leakage tests button by a resistance with power input be placed on described in the middle of metallic conductor suspension joint in the supporting plate.

5: earth leakage protective socket according to claim 1 is characterized in that: an end of described elastic sheet metal links to each other with power input.