CN2193601Y

CN2193601Y - Current leakage protecting socket

Info

Publication number: CN2193601Y
Application number: CN 94238738
Authority: CN
Inventors: 张梅红
Original assignee: LIXIN ELECTRIC APPLIANCES FACTORY SHANGHAI
Current assignee: LIXIN ELECTRIC APPLIANCES FACTORY SHANGHAI
Priority date: 1994-05-20
Filing date: 1994-05-20
Publication date: 1995-03-29
Anticipated expiration: 2004-05-20

Abstract

The utility model relates to an electric leakage protecting socket which is formed by that the electric leakage protecting function is combined with a socket, comprising a detector, an amplifying electric apparatus, a tripping mechanism, an operating mechanism, etc. The utility model is characterized in that the locking is realized by that movable and static switching is realized by the energy storage of a spring; the tripping is realized by that the iron-cored shaft of an electromagnet directly drives a push rod to complete the tripping action. Thus the utility model has reliable motion and high sensitivity, providing electric leakage protection domestic appliances movable electric appliances.

Description

Current leakage protecting socket

The utility model includes socket, clip contact, the circuit jockey that has supplementary protection to connect.Be a kind of have earth leakage protective and protection of load-side center line iterative earthing; the electrical fire danger that can prevent effectively that the socket load-side person from getting an electric shock and may cause because of the power consumption equipment insulation damages, and owing to load-side neutral line iterative earthing causes the malfunctioning novel socket of creepage protection function.

What the earth leakage protective socket of producing carried out at present is centralized control; often cause overall situation tripping operation because of the part electric leakage; go out simultaneously to satisfy the earth leakage protective demand that is exclusively used in movable electrical appliances; in addition; when the neutral line generation iterative earthing in the load circuit; can cause the malfunctioning phenomenon of leakage switch, and lose normal defencive function.Therefore under the situation that household electrical appliance are on the increase and are popularized, press for a kind of novel earth leakage protective socket of exploitation.

The purpose of this utility model design is a kind of to have earth leakage protective and the protection of load-side neutral line iterative earthing fuses gang socket esy to use, safe and reliable with socket.

The purpose of this utility model is achieved through the following technical solutions.

Earth leakage protective socket includes lid, framework, base, electronic control circuit, tripping mechanism, operating mechanism; wherein electronic control circuit comprises current transformer, integrated amplifier, controllable silicon, piezo-resistance etc.; current transformer runs through in the load circuit, when the electric leakage electric shock takes place electrical equipment.Current transformer detects and sends signal to integrated circuit immediately and carries out processing and amplifying, drive the controllable silicon conducting, tripping coil with big current excitation tripping mechanism, the pull-core axle overcomes the dropout spring force, pushrod movement impels snap close to thread off upper and lower contact separation, thereby cut off the electricity supply the generation of prevention accident.After fault is got rid of, the reset button of push system, the closing of contact, socket reinstatement work.

Accompanying drawing 1 is the structural representation of the utility model earth leakage protective socket, and Fig. 2 is sleeve and the connection terminal structure figure that fuses, and Fig. 3 is the socket vertical view that removes behind the loam cake, and Fig. 4 is electronic control circuit figure.1 is the dropout spring among the figure, and 2 is iron mandrel, and 3 is push rod, and 4 is tripping coil, 5 is contact bridge, and 6 is snap close, and 7 is back-moving spring, 8 is reset button, and 9 is framework, and 10 is socket, 11 is fixed head, and 12 is test button, and 13 are lid, 14 is the circuit pack plate, and 15 is pedestal, and 16 is contact bridge, 17 is the end, and 18 is socket, and 19 is binding post.

With reference to the accompanying drawings, structure and the electric circuit characteristic to this earth leakage protective socket is described further.

With reference to Fig. 1,3, the lid of this earth leakage protective socket (13), the end (17), framework (9) are by the flame retardant plastics manufacturing.Single-phase the two poles of the earth of socket (10), the size of three utmost points; layout and technical performance all meet about requirement single-phase, the standard code of 3-phase plug socket; test button is arranged by (18) and reset button (12) on the cap surface; test button is used to test the quality of this earth leakage protective socket performance; when pressing, it produces a simulation leakage current loop; leakage current is 2.5 times a specified leakage current; this earth leakage protective socket moves rapidly in＜0.1 second time; cut off the electricity supply, the snap close state is recovered in the reset button detected action back that is used in use leaking electricity.Tripping mechanism comprises tripping coil (4), iron mandrel (2), push rod (3), dropout spring (1), contact bridge (16), snap close (6).Wherein contact bridge (16) is gone up riveting has silver contact to be fixed on the pedestal, and pedestal and wiring board fuse, and are contained in the back side of framework.Iron mandrel (2) is contained in the centre bore of tripping coil (4), one end heads on dropout spring (1), iron mandrel (2) has front end to have a groove, groove embeds push rod (3), groove is loaded in the framework (9), and back-moving spring (7) embeds in reset button (8) two holes in addition, and two snap close hooks are in button, reset button embeds in framework (9) groove then, and socket (10) is gone up riveting has silver contact to be contained in the framework (9).Test resistance is welded on the contact bridge, in test button (12) insert cover.Press down reset button, the snap close that hangs on the button moves downward, and moves to certain position, and the oblique button on the snap close falls into contact bridge, decontrols button, and snap close is coming on the contact bridge hook, thereby makes the contact of dynamic and static contact, makes power connection.The characteristics of this earth leakage protective socket are: directly drive the push rod action of threading off by the iron mandrel in the electromagnet, separate moving, fixed contact; Snap close is realized the dynamic/static contact connection by spring energy-storage.

Another characteristics of the present utility model are to adopt two magnetic ring coil, can not only detect electric leakage signal, and can detect neutral line iterative earthing fault, when leakage current generating or load neutral line iterative earthing, magnetic test coil detects and sends signal and gives integrated circuit, through amplifying, export a signal and give controllable silicon, controllable silicon triggers, and actuation coil just has a big electric current to pass through, and promotes push rod, dropout.

The utlity model has two kinds of output forms, promptly be positioned at output wiring terminal (19) output that both sides were exported and be positioned to the socket (18) that covers, socket (18) and terminal (19) are a version that fuses (Fig. 2), are stamped to form by copper coin.

This earth leakage protective socket has simple in structure, and volume is small and exquisite, the characteristics such as flexible operation, reliable in action and stable performance.

Claims

1, a kind of earth leakage protective socket, it is by housing, electronic control circuit; tripping mechanism and operating system are formed; it is characterized in that electronic control circuit includes current transformer, integrated amplifier, controllable silicon, piezo-resistances etc.: current transformer runs through in the load circuit; current transformer detects and sends signal; integrated amplifier carries out processing and amplifying, drives the controllable silicon conducting, with the coil of big current excitation tripping mechanism; the pull-core axle promotes pushrod movement snap close is threaded off.

2, according to the said earth leakage protective socket of claim 1, it is characterized in that said current transformer is a zero sequence current mutual inductor, have two run through load circuit as, be two magnetic ring coil.

3, according to claim 1 or 2 said earth leakage protective sockets, it is characterized in that load output has two kinds of forms, i.e. socket output and binding post output, socket and binding post are the version that fuses.

4,1 or 2 said earth leakage protective sockets as requested, the snap close that it is characterized in that latching device realizes that by spring energy-storage dynamic and static contact connects; Be directly drive push rod by the iron mandrel in the electromagnet to finish the action of threading off, separate dynamic and static contact.