WO2014026537A1

WO2014026537A1 - Plug with function of earth leakage protection

Info

Publication number: WO2014026537A1
Application number: PCT/CN2013/080248
Authority: WO
Inventors: 曾昭立
Original assignee: 中山市拓昊电器有限公司
Priority date: 2012-08-14
Filing date: 2013-07-27
Publication date: 2014-02-20
Also published as: CN202840126U

Abstract

The present utility model relates to a plug with a function of earth leakage protection. The plug comprises a shell. A reset button and a test button are arranged on the shell. A live line pin and a null line pin which are electrically connected to an input power source are further arranged on the shell. Fixed contacts are respectively riveted to the live line pin and the null line pin. An installing part is arranged in the shell. A movable contact spring connected to an output power cord is correspondingly arranged on the installing part. Movable contacts contacting with the fixed contacts are arranged at one end of the movable contact spring, and the other end of the movable contact spring is fixed to the installing part. A tripping device for controlling connecting and breaking of the fixed contacts and the movable contacts is further arranged in the shell. The tripping device comprises a crossarm hinged inside the installing part. The reset button is movably arranged in the crossarm and drives the crossarm to swing. A relay component is further arranged in the shell. The test button triggers the relay component to be turned off. According to the present utility model, the plug with the function of earth leakage protection is simple in structure and has few parts is provided.

Description

Plug with leakage protection function

[Technical Field]

The utility model relates to a plug with a leakage protection function.

【Background technique】

The internal structure of the existing leakage protection plug is relatively complicated, the parts are numerous, the assembly process is complicated, and the cost is high. Only the moving reed requires riveting, tinning and the like, and does not conform to the current environmentally friendly assembly process.

The utility model is based on this situation.

[utility content]

The utility model overcomes the deficiencies of the prior art, and provides a plug with a leakage protection function with simple structure and few parts.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A plug having a leakage protection function, comprising: a housing, a reset button and a test button are disposed on the housing, and a live pin and a neutral pin electrically connected to the input power source are further disposed on the outer casing, The live pin and the neutral pin are respectively riveted with a static contact, and a mounting body is disposed in the outer casing, and a moving spring connected to the output power cable is disposed on the mounting body, and the movable spring is disposed at one end of the moving spring a movable contact that is in contact with the stationary contact, and the other end is fixed on the mounting body, and a trip device for controlling the static contact and the movable contact to be turned on or off is further disposed in the outer casing, The buckle device includes a cross arm hinged in the mounting body, the reset button is disposed in the cross arm and pushes the cross arm to swing, and the reset button is provided with a hook and a diagonal pushing surface matched with the cross arm. A reset spring is sleeved at the top end of the reset button, and a relay assembly triggered by the test button is also provided in the outer casing.

A plug having a leakage protection function as described above is characterized in that the fixed portion of the movable spring that is fixed to the mounting body has a convex shape.

A plug having a leakage protection function as described above, wherein the cross arm is provided with a protrusion that cooperates with a reset button, and the reset button moves downward to press the oblique push surface and The bulge is pushed to swing, and the bottom surface of the protrusion is placed above the hook and the hook is fastened.

A plug having a leakage protection function as described above, characterized in that the relay assembly comprises an armature having one end hinged to the cross arm, and the other end of the armature is sleeved with a trip spring.

A plug having a leakage protection function as described above, characterized in that the armature is a T-shaped rectangular parallelepiped.

A plug having a leakage protection function as described above, characterized in that the outer casing comprises an upper cover and a lower cover which are fastened together, and the reset button and the test button protrude from the upper side surface of the upper cover, the fire line The pin and the neutral pin extend from the lower surface of the lower cover.

Compared with the prior art, the utility model has the following advantages:

The leakage tripping structure of the utility model is extremely simple, has few parts, only needs the reset button, the cross arm, the return spring and the relay component, and the assembly process is simple and the cost is low; the fixed end of the moving reed adopts a convex structure, and is directly inserted and fixed. Between the two parts, without the need of riveting, tinning and other processes, the moving spring can be fixed, in line with the current advanced environmentally friendly assembly process, thereby achieving the purpose of energy saving.

The armature of the utility model is a metal stamping part, and the manufacturing process is simple and low in cost compared with the existing lathe parts with complicated and time-consuming manufacturing process.

[Description of the Drawings]

Figure 1 is a cross-sectional view of the utility model;

Figure 2 is a cross-sectional view of the contact of the movable and static contacts of the present invention;

Figure 3 is a cross-sectional view of the movable and static contacts of the present invention;

Figure 4 is a partial cross-sectional perspective view of the present invention;

Figure 5 is an exploded view of the removal of the outer casing of the present invention;

Figure 6 is a perspective view of the present invention;

Figure 7 is a schematic view of the movable spring of the utility model;

Figure 8 is a front view of the cross arm of the present invention;

Figure 9 is a cross-sectional view taken along line A-A of Figure 8;

Figure 10 is a schematic view of the armature of the present invention.

【detailed description】

The utility model will be described in detail below with reference to the accompanying drawings:

A plug having a leakage protection function includes a casing 1 , and a reset button 11 and a test button 12 are disposed on the casing 1 , and a fire pin 21 and a neutral pin 22 electrically connected to the input power source are further disposed on the casing 1 , A static contact 31 is riveted to each of the live pin 21 and the neutral pin 22, and a mounting body 4 is disposed in the housing 1, and a moving spring 51 connected to the output power line is disposed on the mounting body 4. a movable contact 32 that is in contact with the stationary contact 31 is disposed at one end of the movable spring 51, and the other end is fixed to the mounting body 4. The stationary contact 31 is further disposed in the outer casing 1 and The trip device 6 with the movable contact 32 turned on or off, the trip device 6 includes a cross arm 61 disposed in the mounting body 4, and the reset button 11 is movably disposed in the cross arm 61 and pushed The cross arm 61 swings, and the reset button 11 is provided with a hook 621 and a reclining surface 622 that cooperates with the cross arm 61. A return spring 63 is sleeved on the top end of the reset button 11, and is further provided in the outer casing 1. The relay assembly 7 that is powered down is triggered by the test button 12.

The fixed portion of the moving spring piece 51 fixed to the mounting body 4 is formed into a convex shape by bending, and the fixed portion of the moving spring piece 51 has a convex shape, and can be directly inserted between the two parts. No need of riveting, tinning and other processes, the moving springs 51 can be fixed, in line with the current advanced environmentally friendly assembly process, thereby achieving the purpose of energy saving.

A protrusion 611 is disposed in the cross arm 61 to cooperate with the reset button 11. The downward movement of the reset button 11 causes the oblique pushing surface 622 to press and push the protrusion 611 to swing. The bottom surface of the protrusion 611 is placed above the hook 621 and the hook 621 is fastened.

The relay assembly 7 includes an armature 71 having a one end buckled on a cross arm 61. The armature 71 is a T-shaped rectangular parallelepiped, and the armature 71 is a metal stamping member, and the manufacturing process is simple and low in cost. The other end of the armature 71 is provided with a trip spring 72.

The action process of the present invention is as follows: the reset button 11 drives the reset button 11 to move downward under the action of an external force, and under the action of the reclining surface 622 of the reset button 11, the cross arm 61 swings, and the reset button 11 continues to move downward. When the hook 621 on the reset button 11 is moved to the lower end of the protrusion 611, the cross arm 61 presses the cross arm 61 against the hook 624 under the pressure of the armature 71 and the trip spring 72, and the reset button 11 is buckled. Then, the external force is released, and the reset button 11 drives the cross arm 61 and the movable reed 51 to move upward by the action of the return spring 63. When the movable contact 32 and the static contact 31 are in contact, the cross arm 61 stops moving and the power is turned on. .

When a leakage fault occurs or the test button is pressed, the leakage control system commands the relay to work, the armature 71 moves inside the relay, pulls the cross arm 61 to swing, causes the reset button 11 to trip, and the reset button 11 after the trip acts on the return spring 63. Move up and down, separate the moving and static contacts, cut off the power supply, and reset to the power-off state.

Claims

1, A plug having a leakage protection function, comprising: a housing (1), a reset button (11) and a test button (12) are disposed on the housing (1), and an input and an input are also provided on the housing (1) The live wire pin (21) and the neutral wire pin (22) of the power supply are respectively riveted with a static contact (31) on the live wire pin (21) and the neutral wire pin (22), respectively, in the outer casing (1) A mounting body (4) is disposed on the mounting body (4), and a moving spring piece (51) connected to the output power line is disposed correspondingly, and a static contact is disposed at one end of the moving spring piece (51) (31) the movable contact (32) of the contact, the other end is fixed on the mounting body (4), and the static contact (31) and the movable contact (32) are controlled in the outer casing (1). a trip device (6) that is opened or disconnected, the trip device (6) includes a cross arm (61) hinged in the mounting body (4), and the reset button (11) is disposed in a horizontal position In the load (61), the cross arm (61) is swung, and the reset button (11) is provided with a hook (621) and a cross arm (6). 1) The mating reclining surface (622) is provided with a return spring (63) at the top end of the reset button (11), and a relay assembly triggered by the test button (12) in the outer casing (1) ( 7).

2, A plug having a leakage protection function according to claim 1, wherein the fixed portion of the movable spring (51) fixed to the mounting body (4) has a convex shape.

3, A plug having a leakage protection function according to claim 2, wherein said cross arm (61) is provided with a protrusion (611) cooperating with a reset button (11), said reset button ( 11) The downward movement causes the inclined pushing surface (622) to press and push the protrusion (611) to swing, and the bottom surface of the protrusion (611) is placed above the hook (621) and the hook is fastened. (621).

4, A plug having a leakage protection function according to claim 1, wherein said relay assembly (7) comprises an armature (71) hinged at one end to a cross arm (61), said armature (71) The other end of the sleeve is provided with a trip spring (72).

5. A plug having a leakage protection function according to claim 4, wherein said armature (71) is a T-shaped rectangular parallelepiped.

6, A plug having a leakage protection function according to claim 1, wherein the outer casing (1) comprises an upper cover (13) and a lower cover (14) which are fastened together, and the reset button (11) And the test button (12) protrudes from the upper side surface of the upper cover (13), and the live wire pin (21) and the neutral wire pin (22) protrude from the lower side surface of the lower cover (14).