CN2184994Y

CN2184994Y - Leakage protective plug

Info

Publication number: CN2184994Y
Application number: CN 94206002
Authority: CN
Inventors: 吴阿木
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-18
Filing date: 1994-02-18
Publication date: 1994-12-07
Anticipated expiration: 2004-02-18

Abstract

The utility model relates to a structure of a power supply plug, in particular to an electric leakage protective plug which comprises a casing (2), a connector pin (1), a detecting and amplifying device for the current of electric leakage (4) and an executive structure comprising an electromagnet (9), a handle (7), a moving contact piece (16), a fixed contact (10), a supporting frame (13) and a jump pin piece (14). The moving contact piece, the jump pin piece and the supporting frame form a plane and rotary structure; the handle and the electromagnet are in the same plane; thus the utility model can be arranged compactly; the entire electric leakage protective plug has small size, light weight and convenient operation.

Description

Leakage protective plug

The utility model relates to a kind of structure of attaching plug.

Plug is the device that is used for inserting energized in the socket.Plug commonly used comprises shell, and latch and link can only play the conducting electric current merely, the unprotect function.A kind of leakage protecting plug is arranged recently, plug and earth leakage protective device are combined, both the conducting electric current played the earth leakage protective effect again.But owing to increased earth leakage protective partly, volume ratio is bigger, seems heavy, uses inconvenience.

The purpose of this utility model is the structure that proposes a kind of leakage protecting plug, and volume is less thereby use more convenient.

This leakage protecting plug comprises that shell, latch, leakage current detect an amplifying device and an actuator, and actuator comprises electromagnet, handle, moving contact sheet, decides contact blade, bearing support and tripping sheet.Respectively there is a hole at the center of bearing support, moving contact sheet and tripping sheet, is inlaid in after moving contact sheet and tripping sheet are superimposed in the depressed portions of side of bearing support, is fixed on the substrate of actuator by a bolster then.Handle links to each other with bearing support by a trace.

When this leakage protecting plug uses, stir handle, make the related tripping sheet of bearing support, moving contact sheet rotate an angle, the moving contact on the moving contact sheet contacts with deciding contact, and circuit is connected.When the electric leakage situation took place, leakage current detects amplifying device output, and the electromagnet action touches the tripping sheet, makes bearing support and moving contact sheet rotate back into the disjunction position.Because the structure of moving contact sheet, tripping sheet and bearing support is that the plane is rotary, is in the same plane with handle and electromagnet, thereby can arranges very compactly, the volume of whole leakage protecting plug is just less, in light weight, and it is also just convenient to use.

Accompanying drawing 1 is the front view of this leakage protecting plug;

Accompanying drawing 2 is the end view of leakage protecting plug;

Accompanying drawing 3 is the rearview of leakage protecting plug;

Accompanying drawing 4 is the cut-away view of bonnet after opening;

Accompanying drawing 5 is the detailed structure view of the actuator of having amplified;

Accompanying drawing 6 is the assembling schematic diagram of bearing support, tripping sheet and moving contact sheet;

Accompanying drawing 7 is the side sectional view of this leakage protecting plug;

Accompanying drawing 8 is the electrical schematic diagram of leakage protecting plug.

Shown in Fig. 1,2 and 3, the profile and the ordinary plug of this leakage protecting plug are more or less the same, and comprise latch (1) and shell (2), and inner components.Can be two-level structure, also can be three-stage structure.(3) for stirring the knob that actuator's handle is used.

As shown in Figure 4, be equiped with leakage current in the leakage protecting plug and detect amplifying device (4) and execution architecture (5), leakage current detects amplifying device and comprises a zero sequence current mutual inductor and an electronic amplification circuit.(6) be output wiring terminal.

As shown in Figure 5, comprise electromagnet (9), handle (7), moving contact sheet (16) in the execution architecture, decide contact blade (10), bearing support (13) and tripping sheet (14), bearing support, moving contact sheet and tripping sheet are fixed on the substrate of actuator by bolster (15).Handle (7) links to each other with bearing support (13) by trace (12).The position of handle and bearing support is in the closure state of dynamic and static contact among the figure.There is a spring bearing support back, the elastic force of this spring is rotated counterclockwise the bearing support trend, and the line of the pin joint of the pin joint of trace and handle and trace and bearing support is in the same side of handle axis of rotation and bearing support rotation axis line, thereby is in self-locking state.When the electromagnet action, electromagnet armature (8) touches the tripping sheet, bearing support is gone back to an angle, broken self-locking state, bearing support promptly is rotated counterclockwise fast, and moving contact is also and then rotated, and dynamic and static contact breaks away from, become the position shown in chain-dotted line among the figure, be in the self-locking state that branch is had no progeny.Stirring handle can be closed once more with contact.Because the relative position relation of handle, bearing support and trace, disjunction and closed process can both be finished fast.Electromagnet, handle, bearing support and be embedded in top tripping sheet and the moving contact sheet all in same plane, so the volume that accounts for is especially little.Can also adorn the lonely device (11) that goes out in the actuator, breaking capacity is just stronger.

As shown in Figure 6, one depressed portions (19) is arranged on the bearing support (13), tripping sheet (14) and moving contact sheet (16) just are inlaid in this depressed portions, all there is a hole at the center of bearing support, tripping sheet and moving contact sheet, and bolster (15) is fixed on them on the matrix of actuator by above-mentioned hole.Spring (20) is to promote bearing support to rotate counterclockwise usefulness, and spring (17) and (18) are to be used for withstanding moving contact sheet and tripping sheet respectively, in order between the dynamic and static contact of speed and the closed back of assurance of accelerating disjunction and closure enough pressure to be arranged.

As shown in Figure 7; leakage protecting plug for two utmost points or three utmost points; generally can adopt two groups of actuators (21), (22) to be superimposed together; their handle (23), (24) are linked to each other by bracket (25) (shown in the thick straight line); when one group of actuator moves therein; the handle that drives another group actuator by bracket moves simultaneously, reaches the purpose of interlock.

Claims

1; a kind of leakage protecting plug; comprise shell (2); latch (1); leakage current detects an amplifying device (4) and an actuator (5); above-mentioned actuator comprises electromagnet (9); handle (7); moving contact sheet (16); decide contact blade (10); it is characterized in that described actuator also comprises a bearing support (13) and tripping sheet (14); bearing support; respectively there is a hole at tripping sheet and moving contact sheet center; be inlaid in the depressed portions of bearing support (13) side after moving contact sheet (16) and tripping sheet (14) are superimposed; be fixed on the matrix of actuator by a bolster (15) then, handle links to each other with bearing support by a trace (12).

2, leakage protecting plug as claimed in claim 1 is characterized in that described actuator has two groups, and their handle is linked to each other by bracket (25).