CN111180283A

CN111180283A - Quick tripping mechanism of miniature circuit breaker

Info

Publication number: CN111180283A
Application number: CN201811334786.5A
Authority: CN
Inventors: 崔友红; 刘会松
Original assignee: Jiangsu Lan Hong Electric Power Equipment Co ltd
Current assignee: Jiangsu Lan Hong Electric Power Equipment Co ltd
Priority date: 2018-11-10
Filing date: 2018-11-10
Publication date: 2020-05-19

Abstract

The invention discloses a quick tripping mechanism of a miniature circuit breaker, which comprises a main body, wherein an opening is formed in the upper end surface of the main body, a fixed support is arranged at the lower end of the opening, the upper end of the fixed support is fixedly arranged on the upper end surface in the main body, a first rotating shaft is movably arranged at the upper end of the fixed support, a first gear is arranged on the first rotating shaft, first connecting rods are arranged on the two sides of the first gear on the first rotating shaft, a pushing block is arranged at the upper end of the first connecting rod, a second rotating shaft is movably arranged at the lower end of the first rotating shaft on the fixed support, a second gear is arranged on the second rotating shaft, the second gear is meshed with the first gear, and second connecting rods are arranged on the two sides of the second gear on the second rotating shaft. The invention has simple structure and reasonable design, can be used for quickly removing the opening, has quick response, increases the safety of power utilization, and can be used for quickly draining electric arcs and increasing the safety of the device.

Description

Quick tripping mechanism of miniature circuit breaker

Technical Field

The invention relates to the technical field of circuit breaker equipment, in particular to a quick tripping mechanism of a miniature circuit breaker.

Background

The breaker is a switching device which can close, bear and break the current under the condition of a normal loop and close, bear and break the current under the condition of an abnormal loop within a specified time, the safety of the system is guaranteed, remote operation is realized, when the breaker is subjected to a large-current short circuit, instantaneous action is required, the breaker is guaranteed to be opened and closed instantly and successfully, and the safety of the whole system is effectively guaranteed.

The traditional device has the following defects:

1. when the protection circuit is disconnected, disconnection is realized through corresponding mechanical transmission, and because each mechanical transmission has certain resistance and reaction time, certain time needs to be consumed, and the disconnection stability and the disconnection capability of the circuit breaker are influenced.

2. When the protection circuit is quickly disconnected, high-voltage electric arcs are easily generated, and the internal structure of the circuit breaker is easily damaged by the generation of the electric arcs.

Disclosure of Invention

The invention aims to provide a quick tripping mechanism of a miniature circuit breaker, which aims to solve the problems that the protection circuit is disconnected through corresponding mechanical transmission in the background art, and the disconnection stability and the disconnection capability of the circuit breaker are influenced because each mechanical transmission has certain resistance and reaction time and needs to consume certain time.

In order to achieve the purpose, the invention provides the following technical scheme: a quick tripping mechanism of a miniature circuit breaker comprises a main body, wherein an opening is formed in the upper end face of the main body, a fixed support is arranged at the lower end of the opening, the upper end of the fixed support is fixedly arranged on the upper end face in the main body, a first rotating shaft is movably arranged at the upper end of the fixed support, a first gear is arranged on the first rotating shaft, first connecting rods are arranged on the two sides of the first gear on the first rotating shaft, a pushing block is arranged at the upper end of the first connecting rod, a second rotating shaft is movably arranged at the lower end of the first rotating shaft on the fixed support, a second gear is arranged on the second rotating shaft and meshed with the first gear, second connecting rods are arranged on the two sides of the second gear on the second rotating shaft, a first overlapping rod and a second overlapping rod are respectively arranged on the two sides of the lower end of the second connecting rod, and a mounting seat is fixedly arranged on one side, close to the first overlapping rod, in the main, the electromagnetic trip is installed on the upper surface of the installation seat, a fixed seat is fixedly arranged on one side, away from the first overlapping rod, of the fixed support on the upper end face inside the main body, a magnet is installed at the lower end of the fixed seat, a supporting block is arranged at the lower end of the second connecting rod on the lower end face inside the main body, an overlapping block is installed at the upper end of the supporting block, conductive rods are fixedly arranged on the two sides of the overlapping block on the lower end face inside the main body, and conductive plates are installed at the upper ends of the conductive rods.

Preferably, a rubber ring is mounted on the side wall of the opening on the main body.

Preferably, the upper surface of the pushing block is arc-shaped, and a plurality of grooves are formed in the upper surface of the pushing block.

Preferably, the lower extreme of second connecting rod and the one end that the second connecting rod was kept away from to first overlap joint pole all set up to the cambered surface, the upper end of overlap joint piece sets up to the concave cambered surface.

Preferably, a fixing frame is installed at the lower end of the magnet and fixedly arranged on the inner side wall of the main body.

Preferably, the conducting strip is composed of a plurality of metal rings with different diameters, and the metal rings are connected through iron wires.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the electromagnetic release and the magnet are respectively arranged on the mounting seat and the fixing seat, and the first lapping rod and the second lapping rod are respectively arranged on two sides of the lower end of the second connecting rod.

2. According to the invention, the conducting rods are fixedly arranged on both sides of the lower end surface of the main body, the conducting strips are arranged at the upper ends of the conducting rods, and the electric arc generated during short circuit and closing can be rapidly absorbed and led out under the action of the conducting rods and the conducting strips, so that the safety during short circuit and closing is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a quick trip mechanism of a miniature circuit breaker according to the present invention.

Fig. 2 is a schematic diagram of the connection of a first gear and a second gear of the quick trip mechanism of the miniature circuit breaker.

Fig. 3 is a schematic diagram of a conductive sheet structure of a quick trip mechanism of a miniature circuit breaker according to the present invention.

In the figure: 1. a main body; 101. an opening; 2. fixing a bracket; 3. a first rotating shaft; 4. a first gear; 5. a first connecting rod; 51. a pushing block; 6. a second rotating shaft; 7. a second gear; 8. a second connecting rod; 9. a first lap joint rod; 10. a second lap joint rod; 11. a mounting seat; 12. an electromagnetic release; 13. a fixed seat; 14. a magnet; 141. a fixed mount; 15. a support block; 16. a lapping block; 17. a conductive rod; 18. a conductive sheet; 181. a metal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a quick tripping mechanism of a miniature circuit breaker comprises a main body 1, wherein an opening 101 is formed in the upper end face of the main body 1, a fixed support 2 is arranged at the lower end of the opening 101, the upper end of the fixed support 2 is fixedly arranged on the inner upper end face of the main body 1, a first rotating shaft 3 is movably arranged at the upper end of the fixed support 2, a first gear 4 is arranged on the first rotating shaft 3, first connecting rods 5 are arranged on the first rotating shaft 3 and on two sides of the first gear 4, a pushing block 51 is arranged at the upper end of the first connecting rod 5, a second rotating shaft 6 is movably arranged on the fixed support 2 and on the lower end of the first rotating shaft 3, a second gear 7 is arranged on the second rotating shaft 6, the second gear 7 is meshed with the first gear 4, second connecting rods 8 are arranged on two sides of the second rotating shaft 6 and on two sides of the lower end of the second connecting rods 8, a first lapping rod 9 and a second lapping rod 10 are respectively arranged on two sides of the lower, the fixed mount pad 11 that is provided with in one side that is close to first overlap joint pole 9 inside main part 1, install electromagnetic trip 12 on the upper surface of mount pad 11, the fixed fixing base 13 that is provided with in one side that keeps away from first overlap joint pole 9 at fixed bolster 2 on the inside up end of main part 1, magnet 14 is installed to the lower extreme of fixing base 13, be provided with supporting shoe 15 at the lower extreme of second connecting rod 8 on the inside lower terminal surface of main part 1, overlap joint piece 16 is installed to the upper end of supporting shoe 15, all fixedly on the inside lower terminal surface of main part 1 in the both sides of overlap joint piece 16 be provided with conducting rod 17, conducting strip 18 is installed to the upper end of conducting rod 17.

A rubber ring is arranged on the side wall of the opening 101 on the main body 1, which is beneficial to limiting the rotating position of the first connecting rod 5 and preventing the first connecting rod 5 from deviating from the rotating track; the upper surface of the pushing block 51 is arc-shaped, and a plurality of grooves are formed in the upper surface of the pushing block 51, so that the pushing block 51 is better pushed by 8; the lower end of the second connecting rod 8 and one end, far away from the second connecting rod, of the first lap joint rod 9 are both arranged to be cambered surfaces, and the upper end of the lap joint block 16 is arranged to be a concave cambered surface, so that sensitive contact between the second lap joint rod 10 and the lap joint block 16 and sensitive contact between the first lap joint rod 9 and the electromagnetic release 12 are facilitated; the lower end of the magnet 14 is provided with a fixing frame 141, and the fixing frame 141 is fixedly arranged on the inner side wall of the main body 1, so that the stability of the magnet 14 is improved; if the conducting strip 18 is composed of a plurality of metal rings 181 with different diameters, the metal rings 181 are connected through iron wires, so that the range of absorbing electric arcs is increased.

The working principle is as follows: when the circuit breaker encounters heavy current short circuit, the electro-magnet of 12 outputs of electromagnetism release can short circuit at once and lose magnetism, first overlap joint pole 9 is quick under 8 gravity of second connecting rod and the effect of magnet 14 and separates with electromagnetism release 12, and second overlap joint pole 10 can adsorb with magnet 14, the lower extreme of second connecting rod 8 also can separate with the upper surface of overlap joint piece 16 simultaneously, it is simultaneously when electric arc produces, absorption high voltage electric arc that conducting strip 18 can be quick, then outside drainage to main part 1 through conducting rod 17, the mouth can be realized taking off fast to this device, and guarantee to take off the effectual disconnection of back, can not reconnect, increase the stability of disconnection, can be quick absorb the electric arc that produces when short circuit and closure and derive, increase the security when short circuit and closure.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quick tripping device of miniature circuit breaker, includes main part (1), its characterized in that: the upper end face of the main body (1) is provided with an opening (101), the lower end of the opening (101) is provided with a fixed support (2), the upper end of the fixed support (2) is fixedly arranged on the upper end face inside the main body (1), the upper end of the fixed support (2) is movably provided with a first rotating shaft (3), the first rotating shaft (3) is provided with a first gear (4), the first rotating shaft (3) is provided with first connecting rods (5) on two sides of the first gear (4), the upper end of the first connecting rod (5) is provided with a pushing block (51), the fixed support (2) is movably provided with a second rotating shaft (6) on the lower end of the first rotating shaft (3), the second rotating shaft (6) is provided with a second gear (7), the second gear (7) is meshed with the first gear (4), the second rotating shaft (6) is provided with second connecting rods (8) on two sides of the second gear (7), a first lap joint rod (9) and a second lap joint rod (10) are respectively installed on two sides of the lower end of the second connecting rod (8), a mounting seat (11) is fixedly arranged on one side, close to the first lap joint rod (9), inside the main body (1), an electromagnetic release (12) is installed on the upper surface of the mounting seat (11), a fixing seat (13) is fixedly arranged on one side, far away from the first lap joint rod (9), of the fixing support (2) on the upper end face inside the main body (1), an iron-absorbing stone (14) is installed at the lower end of the fixing seat (13), a supporting block (15) is arranged at the lower end of the second connecting rod (8) on the lower end face inside the main body (1), a lap joint block (16) is installed at the upper end of the supporting block (15), and conductive rods (17) are fixedly arranged on two sides of the lap joint block (16) on the lower end face inside the main body, and the upper end of the conducting rod (17) is provided with a conducting strip (18).

2. The quick trip mechanism of a miniature circuit breaker as recited in claim 1, wherein: the rubber ring is arranged on the side wall of the opening (101) on the main body (1).

3. The quick trip mechanism of a miniature circuit breaker as recited in claim 1, wherein: the upper surface of the pushing block (51) is arc-shaped, and a plurality of grooves are formed in the upper surface of the pushing block (51).

4. The quick trip mechanism of a miniature circuit breaker as claimed in claim 1, wherein: the lower extreme of second connecting rod (8) and the one end that second connecting rod (8) were kept away from in first overlap joint pole (9) all set up to the cambered surface, the upper end of overlap joint piece (16) sets up to the concave cambered surface.

5. The quick trip mechanism of a miniature circuit breaker as recited in claim 1, wherein: a fixing frame (141) is installed at the lower end of the magnet (14), and the fixing frame (141) is fixedly arranged on the inner side wall of the main body (1).

6. The quick trip mechanism of a miniature circuit breaker as recited in claim 1, wherein: the conducting strip (18) is composed of a plurality of metal rings (181) with different diameters, and the metal rings (181) are connected through iron wires.