CN209993561U

CN209993561U - Small-sized circuit breaker with simple and safe structure

Info

Publication number: CN209993561U
Application number: CN201920317958.1U
Authority: CN
Inventors: 郑才章; 董莎莎; 董长河; 朱玲燕
Original assignee: SHANGHAI EBASEE ELECTRIC Co Ltd
Current assignee: SHANGHAI EBASEE ELECTRIC Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-01-24
Anticipated expiration: 2029-03-13

Abstract

The utility model discloses a miniature circuit breaker of simple structure safety, including base and lid shell, the bottom forms the casing with the concatenation of lid shell mutually, and the inside of casing is provided with contact system, first business turn over line frame and second business turn over line frame, adjusting screw, flash barrier, explosion chamber, electromagnetic system and handle respectively. The utility model discloses an expend with heat and contract with cold that the change of electric current produced, drive the action of connecting rod an pull rod, arouse disconnection and the closure of handle, spring a is connected with contact system, so that contact system parts sound contact fast when receiving the overload abnormal conditions, the cutoff circuit, reach the effect of protection switch electrical apparatus, produce magnetic field through solenoid, produce the electromagnetic force, promote the ejector pin action, make stationary contact and moving contact part, thereby the cutoff circuit, play the short-circuit protection effect, a simple structure is provided, the break-make is instructed clearly and clearly, fault indication is clear and clearly, safety and reliability, the miniature circuit breaker of circuit short-circuit current cuts off fast.

Description

Small-sized circuit breaker with simple and safe structure

Technical Field

The utility model relates to a circuit breaker technical field, in particular to miniature circuit breaker of simple structure safety.

Background

When a certain type of miniature circuit breaker on the current market is used and a large-current short circuit condition occurs to a circuit, the miniature circuit breaker can not cut off short-circuit current well and even the conditions of self burning and spontaneous combustion of the miniature circuit breaker can occur, so that personal safety and circuit safety are at risk, and inconvenience is brought to circuit maintenance and the like.

Disclosure of Invention

The to-be-solved technical problem of the utility model is overcome prior art's defect, a miniature circuit breaker of simple structure safety is provided, expend with heat and contract with cold that the change through the electric current produced, drive connecting rod an pull rod action, arouse disconnection and the closure of handle, spring a is connected with contact system, so that contact system parts sound contact fast when receiving overload abnormal conditions, the shutdown circuit, reach protection switch electrical apparatus's effect, produce magnetic field through solenoid, produce the electromagnetic force, compression and reaction force through spring b, promote the ejector pin action, make stationary contact and moving contact part separately, thereby the shutdown circuit, play the short-circuit protection effect, a simple structure is provided, the break-make instruction is clear and definite, fault indication is clear and definite, safety and reliability, the miniature circuit breaker of circuit short-circuit electric current cuts off fast.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a miniature circuit breaker of simple structure safety, including base and lid shell, bottom and lid shell splice mutually and form the casing, the inside of casing is provided with contact system, first business turn over line frame and second business turn over line frame, adjusting screw, flash barrier, explosion chamber, electromagnetic system and handle respectively, contact system includes spring, hasp, connecting rod b, bimetallic strip b, connecting plate, run-on plate, flexible coupling, moving contact, support and jump and detain, spring a is installed to one side of jumping the knot, electromagnetic system includes ejector pin, yoke, quiet iron core, solenoid, stationary contact, quiet support, business turn over line frame, line feeding board, terminal, moves iron core and spring b.

As an optimized technical scheme of the utility model, the handle includes handle base and instruction fastener.

As an optimal technical scheme of the utility model, first business turn over wire frame and second business turn over wire frame all include protection against electric shock contact plug-in components.

As an optimized technical scheme of the utility model, install the handle connecting rod between hasp and the jump knot.

As a preferred technical scheme of the utility model, bimetallic strip b comprises initiative layer and passive layer metal concatenation, and bimetallic strip b's bottom is connected with bimetallic strip an, bimetallic strip b's top is connected with connecting rod an, and connecting rod an and connecting rod b fixed connection.

As an optimized technical scheme of the utility model, the run-on plate is linked together with the explosion chamber.

As a preferred technical solution of the present invention, the spring a is connected to the contact system.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses an expend with heat and contract with cold that the change of electric current produced, drive the action of connecting rod an pull rod, arouse disconnection and the closure of handle, spring a is connected with contact system, so that contact system parts sound contact fast when receiving the overload abnormal conditions, the cutoff circuit, reach the effect of protection switch electrical apparatus, produce magnetic field through solenoid, produce the electromagnetic force, compression and reaction force through spring b, promote the ejector pin action, make stationary contact and moving contact part, thereby the cutoff circuit, play the short-circuit protection effect, a simple structure is provided, the break-make is instructed clearly and clearly, fault indication is clear and clearly, safety and reliability, the miniature circuit breaker of circuit short-circuit current cuts off fast.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of a part of the structure of the present invention;

FIG. 3 is a diagram of the split structure of the electromagnetic system of the present invention;

in the figure: 1. a handle link; 2. a contact system; 3. a connecting rod a; 4. a first in-out wire frame; 5. a bimetallic strip a; 6. adjusting screws; 7. an arc barrier; 8. an arc extinguishing chamber; 9. a second in-out wire frame; 10. an electromagnetic system; 11. a handle; 12. a base; 13. a cover shell; 14. a spring a; 15. locking; 16. a connecting rod b; 17. a bimetal b; 18. a connecting plate; 19. an arc striking plate; 20. soft connection; 21. a moving contact; 22. a support; 23. jumping and buckling; 24. a top rod; 25. a magnetic yoke; 26. a stationary iron core; 27. an electromagnetic coil; 28. a stationary contact; 29. a static support; 30. a wire inlet frame; 31. a wire inlet plate; 32. a binding post; 33. a movable iron core; 34. and a spring b.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention. Wherein like reference numerals refer to like parts throughout.

Example 1

As shown in fig. 1-3, the utility model provides a simple structure safety's miniature circuit breaker, including base 12 and lid shell 13, bottom 12 forms the casing with lid shell 13 concatenation mutually, the inside of casing is provided with contact system 2 respectively, first business turn over wire frame 4 and second business turn over wire frame 9, adjusting screw 6, flash barrier 7, explosion chamber 8, electromagnetic system 10 and handle 11, contact system 2 includes spring a14, hasp 15, connecting rod b16, bimetallic strip b17, connecting plate 18, striking plate 19, flexible coupling 20, moving contact 21, support 22 and jump knot 23, spring a14 is installed in the outside of jump knot 23, electromagnetic system 10 includes ejector pin 24, yoke 25, quiet iron core 26, solenoid 27, quiet contact 28, quiet support 29, inlet wire frame 30, inlet wire board 31, terminal 32, move iron core 33 and spring b 34.

Further, handle 11 includes handle base and instruction fastener, has avoided the bat printing paint obscission that handle bat printing probably caused, gives the more safe and reliable experience of user.

The first inlet and outlet wire frames 4 and the second inlet and outlet wire frames 9 both comprise electric shock prevention contact plug-ins to prevent electric shock caused by artificial mistaken touch.

A handle connecting rod 1 is arranged between the lock catch 15 and the jump catch 23, and the lock catch 15 and the jump catch 23 drive the handle to act through the handle connecting rod 1, so that the circuit breaker is closed and opened.

The bimetallic strip b17 is formed by splicing an active layer and a passive layer, the bottom end of the bimetallic strip b17 is connected with a bimetallic strip a5, the top end of the bimetallic strip b17 is connected with a connecting rod a3, and the connecting rod a13 is fixedly connected with a connecting rod b16, so that the connecting rod a3 is driven to move through expansion with heat and contraction with cold generated by the change of current, and the handle 11 is opened and closed.

The arc striking plate 19 is communicated with the arc extinguishing chamber 8, so that an instant electric arc generated when a circuit is broken is led into the arc extinguishing chamber 8, the electric arc is rapidly extinguished in the arc extinguishing chamber 8, and the purpose of protecting the circuit breaker is achieved.

The spring a14 is connected with the contact system 2, so that the contact system 2 can rapidly separate the moving contact and the static contact when receiving the overload abnormal condition, the circuit is cut off, and the effect of protecting the switching device is achieved.

Specifically, the trip buckle 23 is communicated with a fault indicator, when the circuit has overload or short-circuit fault, the red indicator pops up a viewing window for prompting fault, the circuit returns to normal, the red indicator withdraws, the handle 11 comprises a handle base and an indicating clamping piece, thereby avoiding the phenomenon that pad printing paint drops off possibly caused by the pad printing of the handle, and providing safer and more reliable experience for users, the first in-out wire frame 4 and the second in-out wire frame 9 both comprise electric shock prevention contact plug-in units for preventing electric shock caused by artificial accidental touch, the bimetallic strip b17 is formed by splicing an active layer and a passive layer, the bottom end of the bimetallic strip b17 is connected with a bimetallic strip a5, the top end of the bimetallic strip b17 is connected with a connecting rod a3, the connecting rod a13 is fixedly connected with a connecting rod b16, the electromagnetic system 10 drives a connecting rod a3 to act through thermal expansion and cold contraction generated by the change of current, thereby causing the disconnection and the handle 11 to be closed, when the circuit has, the electromagnetic coil 27 generates a magnetic field to generate an electromagnetic force, and the plunger 24 is pushed to operate by the compression and reaction force of the spring b34, so that the stationary contact 28 and the movable contact 21 are separated, thereby breaking the circuit and protecting the short circuit.

The utility model discloses an expend with heat and contract with cold that the change of electric current produced, drive the action of connecting rod a3 pull rod, arouse disconnection and the closure of handle 11, spring a14 is connected with contact system 2, so that contact system 2 parts the sound contact fast when receiving the overload abnormal conditions, the shutdown circuit, reach the effect of protection switch electrical apparatus, produce magnetic field through solenoid 27, produce the electromagnetic force, compression and reaction force through spring b34, promote the action of ejector pin 24, make stationary contact 28 and moving contact 21 part, thereby the shutdown circuit, play the short-circuit protection effect, a simple structure is provided, the break-make is instructed clearly and clearly, fault indication is clear and clearly, safety and reliability, the miniature circuit breaker of circuit short-circuit current cuts off fast.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a simple structure safety's miniature circuit breaker, includes base (12) and lid shell (13), its characterized in that, base (12) forms the casing with lid shell (13) concatenation mutually, the inside of casing is provided with contact system (2), first business turn over wire frame (4) and second business turn over wire frame (9), adjusting screw (6), flash barrier (7), explosion chamber (8), electromagnetic system (10) and handle (11) respectively, contact system (2) include spring a (14), hasp (15), connecting rod b (16), bimetallic strip b (17), connecting plate (18), run-on plate (19), flexible coupling (20), moving contact (21), support (22) and jump and detain (23), spring a (14) are installed to the one side of jumping detaining (23), electromagnetic system (10) include ejector pin (24), yoke (25), The device comprises a static iron core (26), an electromagnetic coil (27), a static contact (28), a static support (29), a wire inlet frame (30), a wire inlet plate (31), a binding post (32), a movable iron core (33) and a spring b (34).

2. A compact circuit breaker with simple and safe structure as claimed in claim 1, characterized in that said handle (11) comprises a handle base and an indicating catch.

3. A compact circuit breaker with simple and safe structure, according to claim 1, characterized in that said first and second inlet and outlet frames (4, 9) each contain anti-shock contact inserts.

4. A compact circuit breaker with simple and safe structure as claimed in claim 1, characterized in that a handle link (1) is installed between the latch (15) and the jump buckle (23).

5. The miniature circuit breaker with simple and safe structure as claimed in claim 1, wherein said bimetallic strip b (17) is composed of active layer and passive layer by metal splicing, and the bottom end of bimetallic strip b (17) is connected with bimetallic strip a (5), the top end of bimetallic strip b (17) is connected with connecting rod a (3), and connecting rod a (3) and connecting rod b (16) are fixedly connected.

6. A compact circuit breaker with simple and safe structure, as claimed in claim 1, characterized in that said arc ignition plate (19) communicates with the arc extinguishing chamber (8).

7. A compact circuit breaker with simple and safe structure, as claimed in claim 1, characterized in that said spring a (14) is connected to the contact system (2).