CN111584320A

CN111584320A - Small-size earth leakage ground fault protection circuit breaker

Info

Publication number: CN111584320A
Application number: CN201910120968.0A
Authority: CN
Inventors: 李志雄; 杨会云; 杜恒; 陈佳锦
Original assignee: Junlang Electric Co ltd
Current assignee: Junlang Electric Co ltd
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2020-08-25

Abstract

The invention provides a small-sized leakage ground fault protection circuit breaker, which comprises a shell, wherein an upper shell is fixed on one side of the shell through a screw, a U-shaped groove is formed in one side of the upper shell, a power supply end wiring board is embedded in one side of the U-shaped groove, a ground conducting wire plate is arranged on one side of the power supply end wiring board, a ground conducting wire is fixed on the ground conducting wire plate through a screw, a leakage ground fault detection module is fixed in the upper shell through a screw, a lower shell is installed on one side of the upper shell through a screw, a cylinder is welded on the upper shell, a contact seat is sleeved on the cylindrical surface of the cylinder, a spring piece is clamped on one side of the contact seat, an insulating medium of an arc extinguish chamber is vacuum, the arc extinguish chamber can extinguish; the leakage detection module is arranged to detect whether a leakage current signal exists at the output end or not and perform self-checking judgment on the product, and the leakage detection module has the characteristics of simple structure, convenience in use, low manufacturing cost and the like.

Description

Small-size earth leakage ground fault protection circuit breaker

Technical Field

The invention relates to the field of leakage protection equipment, in particular to a small leakage ground fault protection circuit breaker.

Background

The breaker is used for cutting off and connecting a load circuit and cutting off a fault circuit to prevent the accident from being enlarged, and when the circuit is overloaded, a thermal element of the thermal release heats to bend the bimetallic strip to push the free release mechanism to act.

The bimetallic strip bending elasticity of the existing circuit breaker fails under long-time work, so that the condition that the fault circuit is cut off is delayed or not is avoided, the service life is short, a self-checking function is not provided, and a user can not clearly know whether the circuit breaker normally works or not.

Disclosure of Invention

Aiming at the problems, the invention provides a small-sized leakage ground fault protection circuit breaker, which limits the advance of a contact seat through resistance, rapidly closes a switch when a spring leaf passes a yield point, presses a convex hull 14 at the highest point of a spring after the contact seat is completely closed, and restores the original state of the spring leaf when the contact seat is opened, the design structure is simple, the manufacturing cost is low, the implementation is easy, the insulating medium of an arc extinguish chamber is vacuum, the arc extinguish chamber can rapidly extinguish the arc and restrain the current after the arc extinguish chamber cuts off the power supply, accidents and accidents are avoided, whether a leakage current signal exists at an output end or not is detected through a leakage ground fault detection module, the self-checking judgment of a product is avoided, and the problems that whether the circuit breaker normally works, the situation that the circuit breaker is delayed when the circuit is cut off, the circuit is not cut off and the like can not, and has the characteristics of simple structure, convenient use, low manufacturing cost and the like.

In order to solve the problems, the invention provides a small-sized leakage ground fault protection circuit breaker which comprises a shell, wherein an upper shell is fixed on one side of the shell through screws, a U-shaped groove is formed in one side of the upper shell, a power supply end wiring board is embedded into one side of the U-shaped groove, a ground conducting wire plate is arranged on one side of the power supply end wiring board, a ground conducting wire is fixed on the ground conducting wire plate through screws, a leakage ground fault detection module is fixed in the upper shell through screws, a lower shell is installed on one side of the upper shell through screws, a cylindrical surface is welded on one side of the upper shell, a contact seat is sleeved on the cylindrical surface, a spring piece is clamped on one side of the contact seat, an electromagnet is fixed on one side of the upper.

The further improvement lies in that: and a lower shell is fixed on one side of the upper shell through a screw.

The further improvement lies in that: one side of the power end wiring board is provided with a threaded hole, and a straight flat head screw is connected inside the threaded hole through threads.

The further improvement lies in that: the spring piece is made of pure copper, and one side of the spring piece is provided with a convex hull.

The further improvement lies in that: a circuit board is installed on one side of the upper shell through screws, and an LED lamp is welded on one side of the circuit board.

The further improvement lies in that: a small hole is formed in one end of the contact seat, and a power supply end wiring board clamp spring is sleeved inside the small hole.

The further improvement lies in that: the power supply end wiring board is made of pure copper, and one side of the power supply end wiring board is of a U-shaped structure.

The further improvement lies in that: the insulating medium of the arc extinguish chamber is vacuum.

The invention has the beneficial effects that: the invention is connected with a straight flat head screw through a thread in the spring piece, which is convenient to disassemble, the spring piece is made of pure copper, the service life of the spring piece can be prolonged, one side of the spring piece is provided with a convex hull which is convenient to contact, an insulating medium of the arc extinguish chamber is vacuum, the arc extinguish chamber can rapidly extinguish arc and inhibit current after a power supply is cut off, and accidents are avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the present invention;

FIG. 3 is a schematic structural view of the lower case of the present invention;

fig. 4 is a schematic view of the structure of a power source terminal plate of the present invention;

FIG. 5 is a schematic structural view of a power terminal board clamp spring of the present invention;

FIG. 6 is a schematic view of a contact block of the present invention;

FIG. 7 is a schematic view of the spring plate of the present invention.

In the figure: the detection device comprises a spring piece 1, a contact seat 2, a power supply terminal board 3, a power supply terminal board clamp spring 4, a shell 5, an electromagnet 6, an upper shell 7, a U-shaped groove 8, a leakage grounding fault detection module 9, a grounding wire board 10, a grounding wire 11, a straight flat head screw 12, a lower shell 13, a convex hull 14, an arc extinguish chamber 15, a circuit board 16, an LED lamp 17 and a cylinder 18.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

According to the figures 1, 2, 3, 4, 5, 6 and 7, the embodiment provides a small-sized leakage ground fault protection circuit breaker, which comprises a shell 5, wherein an upper shell 7 is fixed on one side of the shell 5 through screws, a U-shaped groove 8 is formed in one side of the upper shell 7, a power supply end wiring board 3 is embedded in one side of the U-shaped groove 8, a ground wire board 10 is arranged on one side of the power supply end wiring board 3, a ground wire 11 is fixed on the ground wire board 10 through screws, a leakage ground fault detection module 9 is fixed in the upper shell 7 through screws, a lower shell 13 is installed on one side of the upper shell 7 through screws, a cylinder 18 is welded on one side of the upper shell 7, a contact seat 2 is sleeved on the cylindrical surface of the cylinder 18, a spring plate 1 is clamped on one side of the contact seat 2, an electromagnet 6 is fixed on one side of the upper shell 7 through screws, go up one side of casing 7 and be equipped with lower casing 13 through the fix with screw, one side of power end wiring board 3 is equipped with the screw hole, there is a word grub screw 12 inside the screw hole through threaded connection, the material of spring leaf 1 is pure copper, one side of spring leaf 1 is equipped with convex closure 14, there is circuit board 16 one side of going up casing 7 through the fix with screw, one side welding of circuit board 16 has LED lamp 17, the aperture has been seted up to the one end of contact seat 2, the endotheca of aperture is equipped with power end wiring board jump ring 4, the material of wiring board 3 is pure copper, one side of power end wiring board 3 is U type structure, the insulating medium of explosion.

The invention is connected with a straight flat head screw 12 through the thread inside the spring plate with a thread hole, which is convenient to disassemble, the spring plate 1 is made of pure copper, the service life of the spring plate 1 can be prolonged, one side of the spring plate 1 is provided with a convex hull 14 which is convenient to contact, the insulating medium of the arc extinguish chamber 15 is vacuum, the arc extinguish chamber 15 can rapidly extinguish arc and inhibit current after the power supply is cut off, and accidents are avoided.

The working principle is as follows: the power supply terminal board 3 adopts a plug-in U-shaped structure, which is convenient for plugging and unplugging and ensures the stability of plugging, when in use, the earth leakage fault protection circuit breaker is connected to a circuit to be used, the earth leakage fault detection module 9 starts to work, whether an output end has a current leakage signal or not and the product self-checking judgment is carried out, the LED lamp 17 starts to emit light after the detection is normal, the earth leakage fault protection circuit breaker is prompted to be normal, the elastic characteristic of the elastic sheet 1 is fully utilized in design, the advance of the contact base 2 is limited through resistance, when the spring sheet 1 passes through a yield point, the contact base is rapidly switched on, and the contact base 2 is pressed on the convex hull 14 at the highest point position of the spring sheet 1 after the contact base 2 is completely switched on, when the contact base 2 is switched off and returns to the switching-off position, the spring sheet 1 is restored to, the circuit breaker can be switched on and locked only by electrifying the electromagnet 6 and attracting the electromagnet 6, and the circuit breaker has the advantages of simple design structure, low manufacturing cost and the like, is easy to implement, has a self-checking function during working, ensures that the circuit breaker can be normally used, and has the characteristics of low manufacturing cost and the like.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a small-size earth leakage fault protection circuit breaker which characterized in that: including shell (5), its characterized in that: the utility model discloses a shell, including shell (5), power end wiring board (3), grounding conductor board (10) have ground wire (11) through the fix with screw, the inside of going up shell (7) has electric leakage ground fault detection module (9) through the fix with screw, one side of going up shell (7) has lower casing (13) through the fix with screw, one side welding of going up shell (7) has cylinder (18), the face of cylinder cover of cylinder (18) is equipped with contact seat (2), one side joint of contact seat (2) has spring leaf (1), one side of going up shell (7) has electro-magnet (6) through the fix with screw, explosion chamber (15) are installed through the fix with screw to one side of electro-magnet (6).

2. A miniature earth leakage fault protection circuit interrupter as claimed in claim 1, wherein: and a lower shell (13) is fixed on one side of the upper shell (7) through a screw.

3. A miniature earth leakage fault protection circuit interrupter as claimed in claim 1, wherein: one side of the power end wiring board (3) is provided with a threaded hole, and a straight flat head screw (12) is connected inside the threaded hole through threads.

4. A miniature earth leakage fault protection circuit interrupter as claimed in claim 1, wherein: the spring piece (1) is made of pure copper, and one side of the spring piece (1) is provided with a convex hull (14).

5. A miniature earth leakage fault protection circuit interrupter as claimed in claim 1, wherein: a circuit board (16) is installed on one side of the upper shell (7) through screws, and an LED lamp (17) is welded on one side of the circuit board (16).

6. A miniature earth leakage fault protection circuit interrupter as claimed in claim 5, wherein: one end of the contact seat (2) is provided with a small hole, and a power supply end wiring board clamp spring (4) is sleeved in the small hole.

7. A miniature earth leakage fault protection circuit interrupter as claimed in claim 1, wherein: the power supply end wiring board (3) is made of pure copper, and one side of the power supply end wiring board (3) is of a U-shaped structure.

8. A miniature earth leakage fault protection circuit interrupter as claimed in claim 7, wherein: the insulating medium of the arc extinguish chamber (15) is vacuum.