CN213752562U

CN213752562U - Leakage protector

Info

Publication number: CN213752562U
Application number: CN202022716557.9U
Authority: CN
Inventors: 刘永强; 伍肖
Original assignee: Dongguan Yongsheng Cables Technology Co ltd
Current assignee: Dongguan Yongsheng Cables Technology Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-20
Anticipated expiration: 2030-11-20

Abstract

The utility model relates to the technical field of electrical products, in particular to a leakage protector, which comprises a shell, wherein a circuit board, pins arranged on the circuit board, an automatic circuit breaker and an induction device respectively connected with the circuit board and the pins are arranged in the shell; the automatic circuit breaking device comprises a driving assembly and a spring plate assembly connected with the driving assembly; the driving assembly comprises an electromagnetic coil, a pull rod, a buckling block arranged on the pull rod and a power piece arranged on the electromagnetic coil and clamped with the buckling block; the elastic piece assembly comprises a first elastic piece and a second elastic piece which is arranged on the circuit board and connected with the pull rod; the shell is provided with a test key; the test key comprises a pressing part, a barb and a rod body connected with the pressing part and the barb. The utility model provides a traditional earth-leakage protector's inner structure complicated, do not possess the self-checking function, the security performance is low.

Description

Leakage protector

Technical Field

The utility model relates to an electrical product technical field especially relates to a leakage protector.

Background

Since the invention and the use of electricity by human beings, electricity not only brings great convenience to human beings, but also brings disaster relief to human beings. It may burn out the appliance, cause a fire, or cause an electric shock to a person. If there is a device that allows people to use electricity safely, many unnecessary losses will be avoided. Therefore, various protectors are produced when the electrical appliances with the eight doors are connected. One of them is specialized for protecting people and is called a leakage protector. The leakage protector, called leakage breaker for short, is mainly used for protecting the electric shock of human body with fatal danger when the equipment has leakage fault, has the functions of overload and short circuit protection, can be used for protecting the overload and short circuit of a circuit or a motor, and can also be used for the infrequent switching and starting of the circuit under normal conditions.

However, the conventional leakage protector has a simple internal structure and no self-checking function, and is difficult to cut off a power supply once leakage occurs in a circuit, so that the safety performance is low.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a leakage protector, which has a self-checking function, can effectively prevent leakage, and automatically cut off the power supply when leakage occurs, thereby avoiding the occurrence of safety events caused by leakage.

A leakage protector comprises a shell, wherein a circuit board, pins arranged on the circuit board, an automatic circuit breaker and an induction device respectively connected with the circuit board and the pins are arranged in the shell; the automatic circuit breaking device comprises a driving assembly and a spring plate assembly connected with the driving assembly; the driving assembly comprises an electromagnetic coil, a pull rod, a buckling block arranged on the pull rod and a power piece arranged on the electromagnetic coil and clamped with the buckling block; the elastic piece assembly comprises a first elastic piece and a second elastic piece which is arranged on the circuit board and connected with the pull rod; the shell is provided with a test key; the test key comprises a pressing part, a barb and a rod body for connecting the pressing part and the barb; when the test key is pressed down, the barb is clamped with the buckling block, and the first elastic sheet is connected with the second elastic sheet.

In one embodiment, the induction device comprises a mutual inductor.

In one embodiment, the rod body is sleeved with a test spring, and the test spring is positioned in the shell.

In one embodiment, the buckle block comprises an expansion part and a clamping part which is integrally formed with the expansion part; the clamping part is clamped with the power part; the expansion part is connected with the barb.

In one embodiment, the device further comprises an inner frame; the automatic circuit breaking device is arranged on the inner frame; the inner frame is provided with a mounting groove; the first elastic sheet is located in the mounting groove.

In one embodiment, the number of the first elastic sheets is two, and the two first elastic sheets are respectively positioned at the front side and the rear side of the inner frame; the number of the second elastic sheets is two; each second elastic sheet corresponds to each first elastic sheet.

In one embodiment, the pull rod comprises a connecting part and an extending part which is integrally formed with the connecting part; the extension part is connected with the second elastic sheet.

In one embodiment, the housing is provided with a light guide post; the light guide column is connected with the circuit board.

In one embodiment, the shell is provided with a reset key, and a reset spring connected with the circuit board is arranged in the reset key.

In one embodiment, the cable further comprises an SR tail sleeve; the SR line tail sleeve is connected with the shell.

The utility model has the advantages as follows:

the utility model is provided with a leakage protector which has ingenious and reasonable structural design and self-checking function and can effectively prevent the current from generating safety incidents due to overlarge current, concretely, the leakage protector comprises a shell which plays a certain role in protection, an automatic circuit breaker and a sensing device are arranged on a circuit board, the automatic circuit breaker and the sensing device are mutually matched, the sensing device is used for sensing whether the current of the circuit is overlarge or not, when the current is larger than a preset value, the automatic circuit breaker is started and automatically cuts off the power supply, the automatic circuit breaker comprises a driving component and a spring plate component connected with the driving component, concretely, when the current is larger than the preset value, an electromagnetic coil drives a power part to retract, the power part drives a buckling block to pull back, a test button is recovered to be in an unpressed state, and a pull rod is disconnected with a first spring plate due to gravity reduction, the circuit is powered off, the whole structure is reasonable in design, and the safety is high.

Drawings

Fig. 1 is a schematic perspective view of the leakage protector of the present invention;

fig. 2 is an exploded perspective view of the earth leakage protector of fig. 1;

fig. 3 is a schematic perspective view of the earth leakage protector of fig. 1 with the housing removed;

fig. 4 is a schematic partial perspective view of the earth leakage protector of fig. 3;

fig. 5 is a schematic perspective view of a driving assembly of the earth leakage protector of fig. 4;

fig. 6 is a schematic perspective view of another perspective view of the driving assembly of the earth-leakage protector of fig. 5.

Description of reference numerals: the automatic circuit breaking device comprises a shell 10, a test key 11, a pressing part 11a, a rod body 11b, a barb 11c, a test spring 12, a light guide column 13, a reset key 14, a reset spring 15, an inner frame 16, a circuit board 20, a pin 30, an induction device 40, a mutual inductance coil 41, an automatic circuit breaking device 50, a driving assembly 60, an electromagnetic coil 61, a pull rod 62, a connecting part 62a, an extending part 62b, a buckling block 63, an expanding part 63a, a clamping part 63b, a power part 64, an elastic piece assembly 70, a first elastic piece 71, a second elastic piece 72 and an SR wire tail sleeve 80.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 6, an embodiment of the present invention provides a leakage protector, which has a self-checking function, and can effectively prevent leakage, and automatically cut off a power supply when leakage occurs, so as to avoid a safety event caused by leakage. In this embodiment, the earth leakage protector comprises a housing 10, a circuit board 20, pins 30 disposed on the circuit board 20, an automatic circuit breaker 50, and a sensing device 40 connected to the circuit board 20 and the pins 30 respectively are disposed in the housing 10; the automatic circuit breaker 50 comprises a driving component 60 and a spring component 70 connected with the driving component 60; the driving assembly 60 comprises an electromagnetic coil 61, a pull rod 62, a buckling block 63 arranged on the pull rod 62, and a power piece 64 arranged on the electromagnetic coil 61 and clamped with the buckling block 63; the elastic piece assembly 70 includes a first elastic piece 71 and a second elastic piece 72 mounted on the circuit board 20 and connected to the pull rod 62.

As shown in fig. 1 to 3, the housing 10 is provided with a test key 11; the test key 11 comprises a pressing part 11a, a barb 11c and a rod body 11b connecting the pressing part 11a and the barb 11 c; when the test key 11 is pressed down, the barb 11c is clamped with the buckling block 63, and the first elastic sheet 71 is connected with the second elastic sheet 72.

The rod body 11b is sleeved with a test spring 12, and the test spring 12 is positioned in the shell 10.

The shell 10 is provided with a light guide column 13; the light guide column 13 is connected with the circuit board 20 to play a role in prompting.

The casing 10 is provided with a reset key 14, a reset spring 15 connected with the circuit board 20 is arranged in the reset key 14, and the reset key 14 is used for resetting the leakage protector.

The utility model also comprises an inner frame 16; the automatic circuit breaker 50 is mounted to the inner frame 16; the inner frame 16 is provided with a mounting groove for mounting and connecting.

The induction device 40 comprises a mutual coil 41; mutual inductor 41 is used for induction circuit's electric current, and traditional circuit current is at 4mA ~ 6mA, the utility model discloses in, when circuit current is greater than 6mA, automatic circuit breaker 50 starts, and the safety incident because of the electric leakage causes is avoided taking place to automatic power off, has very high security.

As shown in fig. 4 to 6, the driving assembly 60 includes an electromagnetic coil 61, a pull rod 62, a buckle block 63 mounted on the pull rod 62, and a power element 64 mounted on the electromagnetic coil 61 and engaged with the buckle block 63; specifically, when the current is greater than the preset value of 6mA, the electromagnetic coil 61 drives the power element 64 to retract, the power element 64 drives the buckling block 63 to retract, the test button 11 returns to the non-pressed state, and the pull rod 62 descends due to the action of gravity.

The tie bar 62 includes a connecting portion 62a and an extending portion 62b integrally formed with the connecting portion 62 a.

The buckle block 63 comprises an expansion part 63a and a clamping part 63b which is integrally formed with the expansion part 63 a; the clamping part 63b is clamped with the power piece 64; the expanded portion 63a is connected to the barb 11 c; the utility model discloses in, extension portion 63a and joint portion 63b integrated into one piece are the L type.

As shown in fig. 3, the elastic member 70 includes a first elastic member 71 and a second elastic member 72 mounted on the circuit board 20 and connected to the pull rod 62; the first elastic sheet 71 is positioned in the mounting groove; in this embodiment, the number of the first elastic pieces 71 is two, and the two first elastic pieces are respectively located at the front side and the rear side of the inner frame 16; the number of the second elastic sheets 72 is two; each second elastic piece 72 corresponds to each first elastic piece 71.

The utility model discloses in, when circuit current was in normal condition, first shell fragment 71 and second shell fragment 72 butt, when the electric current was greater than default 6mA, solenoid 61 drive power piece 64 was returned and is retracted, and power piece 64 drives and detains piece 63 and pull back, and test button 11 resumes and does not press the state, and pull rod 62 is because gravity descends, then with the second shell fragment 72 and the first shell fragment 71 disconnection of pull rod 62 butt, then circuit outage, overall structure reasonable in design.

As shown in fig. 1 to 2, the present invention further includes an SR wire tail sleeve 80; the SR wire tail sleeve 80 is connected to the housing 10; the SR wire tail sleeve 80 plays a certain role in protecting the power wire.

The utility model discloses a leakage protector, this leakage protector structural design is ingenious, reasonable, possesses the self-checking function, can prevent the electric leakage effectively, include the body 10 specifically, the body 10 plays certain guard action, is provided with circuit board 20, base pin 30, automatic circuit breaker 50 and induction system 40 in the body 10; automatic circuit breaker 50 and induction system 40 set up in circuit board 20, automatic circuit breaker 50 and induction system 40 mutually support, induction system 40 is used for sensing whether circuit current is too big, when the current is greater than default 6mA, automatic circuit breaker 50 starts, the automatic power off, automatic circuit breaker 50 includes drive assembly 60, and the shell fragment subassembly 70 of being connected with drive assembly 60, specifically, when the current is greater than the default, solenoid 61 drive power piece 64 contracts, power piece 64 drives knot piece 63 and draws back, test button 11 resumes not to press the state, pull rod 62 is because gravity descends, then second shell fragment 72 and the first shell fragment 71 disconnection with pull rod 62 butt, then the circuit outage, overall structure reasonable in design, and the security is high.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A leakage protector is characterized by comprising a shell, wherein a circuit board, pins arranged on the circuit board, an automatic circuit breaker and an induction device respectively connected with the circuit board and the pins are arranged in the shell; the automatic circuit breaking device comprises a driving assembly and a spring plate assembly connected with the driving assembly; the driving assembly comprises an electromagnetic coil, a pull rod, a buckling block arranged on the pull rod and a power piece arranged on the electromagnetic coil and clamped with the buckling block; the elastic piece assembly comprises a first elastic piece and a second elastic piece which is arranged on the circuit board and connected with the pull rod; the shell is provided with a test key; the test key comprises a pressing part, a barb and a rod body for connecting the pressing part and the barb; when the test key is pressed down, the barb is clamped with the buckling block, and the first elastic sheet is connected with the second elastic sheet.

2. A earth-leakage protector according to claim 1, characterized in that the induction means comprise a mutual inductor.

3. A leakage protector according to claim 1, wherein the rod body is provided with a test spring around the rod body, and the test spring is located in the casing.

4. The earth leakage protector as claimed in claim 1, wherein the buckle block comprises an extension portion and a clamping portion integrally formed with the extension portion; the clamping part is clamped with the power part; the expansion part is connected with the barb.

5. A earth-leakage protector according to claim 1, further comprising an inner frame; the automatic circuit breaking device is arranged on the inner frame; the inner frame is provided with a mounting groove; the first elastic sheet is located in the mounting groove.

6. A leakage protector according to claim 5, wherein the first resilient pieces are two groups which are respectively located at the front side and the rear side of the inner frame; the number of the second elastic sheets is two; each second elastic sheet corresponds to each first elastic sheet.

7. A leakage protector according to claim 1, wherein the pull rod comprises a connecting portion and an extending portion integrally formed with the connecting portion; the extension part is connected with the second elastic sheet.

8. A earth-leakage protector according to claim 1, characterized in that the casing is provided with a light-guiding post; the light guide column is connected with the circuit board.

9. A leakage protector according to claim 1, wherein the housing is provided with a reset button, and a reset spring connected with the circuit board is arranged in the reset button.

10. A earth-leakage protector according to claim 1, further comprising an SR wire tail sleeve; the SR line tail sleeve is connected with the shell.