CN212907587U

CN212907587U - Novel circuit breaker

Info

Publication number: CN212907587U
Application number: CN202021236413.7U
Authority: CN
Inventors: 姚纪彭; 程勇强
Original assignee: Shenzhen Weiyu Intelligent Technology Co ltd
Current assignee: Shenzhen Weiyu Intelligent Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-04-06
Anticipated expiration: 2030-06-29

Abstract

The utility model provides a novel circuit breaker, wherein a wire outlet terminal component, a closing drive component, a handle drive component, a thermomagnetic drive tripping component, an electromagnetic tripping component, a wire inlet terminal component, a mutual inductor and an arc extinguish chamber are arranged in a shell; the mutual inductor is arranged between the wire outlet terminal assembly and the closing drive assembly, one end of the mutual inductor is connected with the wire outlet terminal assembly, the other end of the mutual inductor is connected with one side of the closing drive assembly, and the other side of the closing drive assembly is provided with a thermomagnetic drive tripping assembly; the closing drive component is arranged below the handle drive component; an electromagnetic tripping assembly is arranged on one side of the thermomagnetic driving tripping assembly and is connected with the incoming line terminal assembly; the explosion chamber sets up in the electromagnetism trip assembly below. The utility model discloses structural configuration has realized fast under compact, small condition, and the disjunction ability is strong, longe-lived effect to reserved the space for the circuit board.

Description

Novel circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus protects technical field, especially relates to a novel circuit breaker.

Background

The circuit breaker generally comprises a contact system, an arc extinguishing system, an operating mechanism, a release, a shell and the like, and has the functions of cutting off and connecting a load circuit and cutting off a fault circuit, so that the accident is prevented from being enlarged, and the safe operation is ensured. In order to respond to the relevant standards of national power grids, the miniature circuit breaker needs to realize the functions of measuring, monitoring, controlling, adjusting, metering and the like of the running state of the miniature circuit breaker, and the size of the circuit breaker is increased in the prior art to meet the requirements, so that the use scene of the miniature circuit breaker is reduced, and the assembly is complex.

In the prior art, the breaker generally takes electricity from the outside, so that instability factors are increased, and the stability and the service life of a product are influenced. The existing circuit breaker generally has L7 and C65, the size is large, a single-contact mechanism is generally used for controlling the circuit breaker, namely, the circuit breaker only comprises a moving contact and a static contact to achieve the effects of disconnection and contact, electric sparks influence the service life of the contact during separation, the short circuit breaking capacity is generally 6000A, the circuit breaker is prone to failure after about 3 times of short circuit, the electric service life does not exceed 10000 times, the breaking capacity is low, the service life is low, and the safety is low.

Along with the improvement of the quality of life of people, the power utilization demand is also continuously improved, and the requirement on power distribution is more urgent and especially important. Therefore, how to effectively reduce the size of the circuit breaker and improve the breaking capacity and the service life of the product is a technical problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a novel circuit breaker aims at solving among the prior art circuit breaker breaking capacity low, and the life-span is short, and is bulky, and the structure is complicated, assembles the difficulty, with high costs technological problem.

The utility model adopts the following technical scheme:

a novel circuit breaker comprises a shell, wherein an outgoing line terminal assembly, a closing drive assembly, a handle drive assembly, a thermomagnetic drive tripping assembly, an electromagnetic tripping assembly, an incoming line terminal assembly, a mutual inductor and an arc extinguish chamber are arranged in the shell; the mutual inductor is arranged between the wire outlet terminal assembly and the closing drive assembly, one end of the mutual inductor is connected with the wire outlet terminal assembly, the other end of the mutual inductor is connected with one side of the closing drive assembly, and the other side of the closing drive assembly is provided with a thermomagnetic drive tripping assembly; the closing drive component is arranged below the handle drive component; an electromagnetic tripping assembly is arranged on one side of the thermomagnetic driving tripping assembly and is connected with the incoming line terminal assembly; the explosion chamber sets up in the electromagnetism trip assembly below.

Preferably, the switching-on driving assembly comprises an electromagnetic driver, a switching-on state identification sensor and a switching-off state identification sensor, the electromagnetic driver is provided with a push rod, the handle driving assembly is provided with a cam, and the push rod is arranged below the cam; the switching-on state identification sensor is arranged on the cam, and the switching-off state identification sensor is arranged on the handle driving component.

Preferably, the transmission mechanism assembly comprises a main shaft, a rotating shaft and a lock catch; one end of the pull rod is provided with a pull rod groove of a transmission mechanism, one end of the pull rod penetrates through the handle through the pull rod groove of the handle, and the other end of the pull rod is arranged on the movable contact flow guide piece through the pull rod groove of the transmission mechanism; the rotating shaft is provided with a torsion spring and a lock catch, and the main shaft is connected with the rotating shaft through a moving contact flow guide piece.

Preferably, the contact mechanism comprises a moving contact and a static contact, the moving contact is arranged on a moving contact flow guide element, the moving contact flow guide element is arranged on the rotating shaft, and the static contact is arranged on a static contact flow guide element; and an electric heating release is arranged on one side of the lock catch, which is far away from the main shaft, and the electric heating release is arranged on the static contact flow guide piece.

Preferably, the lock catch comprises a first lock body, a second lock body and a third lock body, and the second lock body is arranged between the first lock body and the third lock body.

Preferably, the first lock body and the second lock body are in a V shape or a U shape, and the second lock body and the third lock body are in a V shape or a U shape.

Preferably, the electrothermal release is arranged between the second lock body and the third lock body and is contacted with one side of the second lock body.

Preferably, the electromagnetic trip assembly is arranged on one side of the third lock body.

Preferably, the contact mechanism comprises a first contact unit and a second contact unit; the first contact unit comprises a first moving contact and a first fixed contact, the first moving contact is arranged on a first moving contact flow guide part, and the first fixed contact is arranged on a first fixed contact flow guide part; the second contact unit comprises a second moving contact and a second fixed contact, the second moving contact is arranged on the second moving contact flow guide part, and the second fixed contact is arranged on the second fixed contact flow guide part; the first contact unit and the second contact unit are connected in parallel; the first moving contact and the second moving contact are respectively connected with the transmission mechanism.

Preferably, the torsion spring comprises a first torsion spring and a second torsion spring, the first torsion spring and the second torsion spring are both sleeved on the rotating shaft, one end of each of the first torsion spring and the second torsion spring is arranged on the lock catch, the other end of each of the first torsion springs is arranged on the first moving contact flow guide piece, and the other end of each of the second torsion springs is arranged on the second moving contact flow guide piece; the main shaft is respectively connected with the first moving contact flow guide element and the second moving contact flow guide element, and is connected with the rotating shaft through the first moving contact flow guide element and the second moving contact flow guide element.

The utility model has the advantages that:

the utility model discloses two terminals of circuit breaker are located the left and right sides, and handle drive assembly and combined floodgate drive assembly are located in the middle of the circuit breaker, and combined floodgate drive assembly is located handle drive assembly below, and drive mechanism subassembly and thermomagnetic drive tripping assembly are located between income terminal subassembly and the combined floodgate drive assembly, and drive mechanism subassembly is close to thermomagnetic drive tripping assembly, and thermomagnetic drive tripping assembly is close to income terminal subassembly with electromagnetic tripping assembly. The arc extinguish chamber is positioned below the thermomagnetic drive tripping assembly, the electromagnetic tripping assembly and the wire inlet terminal at the bottom of the right side of the circuit breaker. The structure layout of the novel circuit breaker realizes the effects of high speed, strong breaking capacity and long service life under the conditions of compactness and small volume, and reserves space for the circuit board.

Drawings

Fig. 1 is a schematic structural diagram of the novel circuit breaker of the present invention.

Fig. 2 is a schematic structural diagram of the electromagnetic actuator of the novel circuit breaker of the present invention.

Fig. 3 is the utility model relates to a novel closing drive assembly schematic diagram of circuit breaker.

Fig. 4 is a schematic structural diagram of a handle driving assembly of the novel circuit breaker of the present invention.

Fig. 5 is a schematic structural diagram of a latch of the novel circuit breaker of the present invention.

Fig. 6 is a schematic structural diagram of a contact mechanism in embodiment 2 of the novel circuit breaker.

In the figure: 1. a wire outlet terminal assembly; 2. a closing drive assembly; 3. a handle drive assembly; 4. a drive mechanism assembly; 5. an electromagnetic trip assembly; 6. a wire inlet terminal assembly; 7. locking; 8. a handle pull rod groove; 9. a pull rod; 10. a transmission mechanism pull rod groove; 11. a leading copper sheet at the wire outlet end; 12. a static contact flow guide part; 13. static contact; 14. a moving contact; 15. an electric heating release; 16. a rotating shaft; 17. a moving contact flow guide element; 18. a housing; 19. a transformer; 20. a power supply terminal voltage sampling line; 21. a metal rod; 22. a fixed contact flow guide part fixing part; 23. a main shaft; 24. an arc extinguishing chamber; 201. a housing fixing groove; 202. a driver metal bracket; 203. a driver chassis; 204. a push rod; 601. a first torsion spring; 602. a second torsion spring; 603. a first moving contact; 604. a second moving contact; 605. a first fixed contact; 606. a second fixed contact; 701. a first lock body; 702. a second lock body; 703 a third lock body.

Detailed Description

Example 1:

as shown in fig. 1, the utility model provides a novel circuit breaker, including shell 18, be provided with terminal subassembly 1 of being qualified for the next round of competitions, combined floodgate drive assembly 2, handle drive assembly 3, thermomagnetic drive tripping assembly, electromagnetism tripping assembly 5, terminal subassembly 6, mutual-inductor 19 and explosion chamber 24 in the shell 18. The thermomagnetic drive trip assembly includes the transmission assembly 4 and the electrothermal trip 15. The mutual inductor 19 is arranged on the outgoing line terminal assembly 1 and the closing driving assembly 2, one end of the mutual inductor is connected with the outgoing line terminal assembly 1, the other end of the mutual inductor is connected with the closing driving assembly 2, and the other side of the closing driving assembly 2 is provided with the transmission mechanism assembly 4; the closing drive component 2 is arranged below the handle drive component 3; a closing drive component 2 is arranged on one side of the transmission mechanism component 4, an electromagnetic tripping component 5 is arranged on the other side of the transmission mechanism component, and the electromagnetic tripping component 5 is connected with a wire inlet terminal component 6; the arc chute 24 is disposed below the electromagnetic trip assembly 5.

As shown in fig. 2, 3 and 4, the closing driving assembly 2 includes an electromagnetic driver, a closing state identification sensor 205 and an opening state identification sensor 206, the electromagnetic driver is provided with a push rod 204, the handle driving assembly 3 is provided with a cam 301, and the push rod 204 is arranged below the cam 301; the closing state recognition sensor 205 is provided on the cam 301, and the opening state recognition sensor 206 is provided on the handle driving unit 3.

The electromagnetic driver comprises a push rod 204, a driver framework 203 and a driver metal support 202, wherein the push rod 204 is arranged on the driver framework 203, and the driver framework 203 is arranged in the shell fixing groove 201 through the driver metal support 202. The push rod 204 is flanged with the driver framework 203.

The transmission mechanism assembly 4 comprises a pull rod 9, a main shaft 23, a rotating shaft 16 and a lock catch 7; the pull rod 9 is U-shaped, one end of the pull rod is arranged on the handle through the handle pull rod groove in a penetrating way, the other end of the pull rod is provided with a transmission mechanism pull rod groove 10, and the pull rod groove 10 is arranged on the movable contact flow guide piece 17 through the transmission mechanism; the rotating shaft 16 is provided with a torsion spring and a lock catch 7, and the main shaft 23 is connected with the rotating shaft 16 through a movable contact flow guide part 12.

The novel circuit breaker further comprises a contact mechanism, the contact mechanism is arranged in the shell 18 and comprises a moving contact 2 and a static contact 13, the moving contact 2 is arranged on a moving contact flow guide member 17, the moving contact flow guide member 17 is arranged on a rotating shaft 23, and the static contact 13 is arranged on a static contact flow guide member 12; an electric heating release 15 is arranged on one side of the lock catch 7 far away from the main shaft 23, and the electric heating release 15 is arranged on the static contact flow guide member 22.

As shown in fig. 4, the shackle 7 includes a first lock body 701, a second lock body 702, and a third lock body 703, and the second lock body 702 is disposed between the first lock body 701 and the third lock body 703. The first lock body 701 and the second lock body 702 are in a V shape or a U shape, and the second lock body 702 and the third lock body 703 are in a V shape or a U shape.

In this embodiment, the electrothermal release 15 is disposed between the second lock 702 and the third lock 703, and contacts with one side of the second lock 702. The electromagnetic trip assembly 5 is disposed at one side of the third lock body 703.

In this embodiment, the electromagnetic trip assembly is connected to the incoming line terminal assembly by a wire, and the electromagnetic trip assembly is connected to the thermomagnetic drive trip assembly by a wire. And the static contact flow guide member is connected with the electromagnetic drive tripping assembly in a spot welding manner. The static contact is connected with the static contact flow guide element in a spot welding mode, and the moving contact is connected with the moving contact flow guide element in a spot welding mode. The movable contact current guide element is connected with the rotating shaft 16. The moving contact flow guide element is connected with the outlet end flow guide copper sheet by a lead. The moving contact is in contact conduction with the fixed contact when in a closing state. The outlet terminal guide copper sheet is connected with the outlet terminal assembly by a lead. The moving contact and the moving contact diversion piece are pushed by the handle to transmit force and angle through the pull rod to enable the transmission mechanism assembly to take effect, and the transmission mechanism assembly drives the moving contact and the moving contact diversion piece to be close to the static contact through the rotating shaft until the moving contact and the moving contact diversion piece are contacted. And a lead connected with the outlet terminal and the outlet copper sheet at the outlet terminal passes through the mutual inductor 19 to monitor the current. The electromagnetic tripping component 5 spot welding voltage sampling line 20 is led to a circuit board, voltage data required by measurement and metering is provided as a basis for protection, and the functions of measurement, metering and protection are achieved while the current can be switched on and off from an incoming terminal to a terminal.

The utility model discloses a theory of operation: the power supply is connected through the incoming line terminal assembly 6, current is sequentially output through the electromagnetic tripping assembly 5, the electric heating tripper 15, the static contact flow guide piece 12, the static contact 13, the movable contact 14, the movable contact flow guide piece 17, the outgoing line terminal flow guide copper sheet 11 and the outgoing line terminal assembly 1, short-circuit protection is carried out through the electromagnetic tripping assembly, and the short-circuit protection is acted on the lock catch. The electric heating release carries out overload protection and acts on the lock catch. The handle driving assembly can trigger the static contact 13, the movable contact 14 and the separation and contact of the movable contact and the static contact through the connection of the handle pull rod groove 8 and the transmission mechanism pull rod groove 10, and controls the on-off of the current in the circuit breaker to act on the transmission mechanism assembly. The switching-on driving component 2 achieves the effect of automatic switching-on through the process and the effect of pushing the handle driving component 3 to drive switching-on and switching-off, and acts on the handle driving component 3. The mutual inductor 19 penetrates through the leading copper sheet 11 of the outlet terminal and the connecting wire of the outlet terminal assembly 1 to perform current sampling. The power supply terminal voltage sampling wire 20 obtains the power supply terminal voltage by spot welding on the electromagnetic trip unit 5. The electromagnetic tripping assembly is fixed through a shell fixing groove 201, a driver metal support 202 and a driver framework 203, and acts on the handle driving assembly 3 through a push rod to achieve the effect of automatic closing.

Example 2:

this embodiment is a double breakpoint structure, includes two moving contacts, two static contacts and two torsional springs. The contact mechanism comprises a first contact unit and a second contact unit; the first contact unit comprises a first moving contact 603 and a first fixed contact 605, the first moving contact 603 is arranged on the first moving contact flow guide, and the first fixed contact 605 is arranged on the first fixed contact flow guide; the second contact unit includes a second moving contact 604 and a second fixed contact 606, the second moving contact is disposed on the second moving contact flow guide, and the second fixed contact is disposed on the second fixed contact flow guide; the first contact unit and the second contact unit are connected in parallel; the first moving contact and the second moving contact are respectively connected with the transmission mechanism.

The torsion spring comprises a first torsion spring 601 and a second torsion spring 602, the first torsion spring 601 and the second torsion spring 602 are sleeved on the rotating shaft, one end of each of the first torsion spring and the second torsion spring is arranged on the lock catch, the other end of each of the first torsion spring is arranged on the first moving contact flow guide piece, and the other end of each of the second torsion springs is arranged on the second moving contact flow guide piece; the main shaft is respectively connected with the first moving contact flow guide element and the second moving contact flow guide element, and is connected with the rotating shaft through the first moving contact flow guide element and the second moving contact flow guide element.

The double break points are composed of 21 double torsion springs, 22 double-moving contacts and 23 double-static contacts, and the 22 double-moving contacts and the 23 double-static contacts can be driven to contact and separate through a 4-handle, a 6-electric heating release and an 8-electromagnetic release.

The handle drives the main shaft to transmit angle and force to the rotating shaft through the U-shaped connecting rod, the rotating shaft transmits the angle and force to the moving contact flow guide piece through the double torsion springs, and the moving contact flow guide piece pushes the double moving contact to be in contact with the double fixed contacts or is pulled to be in a brake-separating state, so that the current is switched on and off. The electric heating release transmits the angle and the force to the rotating shaft through the trigger lock catch, transmits the angle and the force to the moving contact flow guide part through the double torsional springs, and the moving contact flow guide part drives the double-moving contact to be separated from the double-static contact, so that the effect of cutting off the current is achieved. The electromagnetic release transmits the angle and the force to the rotating shaft through the trigger lock catch, transmits the angle and the force to the moving contact flow guide piece through the double torsional springs, and the moving contact flow guide piece drives the double-moving contact to be separated from the double-static contact, so that the effect of cutting off the current is achieved.

In the embodiment, the contact mechanisms are connected to form the double-contact mechanism, the double torsional springs are used for driving the double movable contacts to be separated from the double stationary contacts, and the two movable contacts are connected through the conducting wires to realize that double breakpoints act on one pole, so that the performance is improved. The electromagnetic release and the electric heating release act on the lock catch to realize the disconnection of the circuit breaker; the main shaft and the moving contact mechanism are driven by the handle through the U-shaped connecting rod, the opening and closing operation of the circuit breaker is realized, and the double-breakpoint mechanism is small in occupied space, strong in breaking capacity and long in service life.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel circuit breaker is characterized in that: the intelligent switching device comprises a shell (18), wherein an outgoing line terminal assembly (1), a switching-on driving assembly (2), a handle driving assembly (3), a thermomagnetic driving tripping assembly, an electromagnetic tripping assembly (5), an incoming line terminal assembly (6), a mutual inductor (19) and an arc extinguish chamber (24) are arranged in the shell (18); the mutual inductor (19) is arranged between the outlet terminal assembly (1) and the closing drive assembly (2), one end of the mutual inductor is connected with the outlet terminal assembly (1), the other end of the mutual inductor is connected with one side of the closing drive assembly (2), and the other side of the closing drive assembly (2) is provided with a thermomagnetic drive tripping assembly; the closing drive component (2) is arranged below the handle drive component (3); an electromagnetic tripping assembly (5) is arranged on one side of the thermomagnetic driving tripping assembly, and the electromagnetic tripping assembly (5) is connected with the incoming line terminal assembly (6); the arc extinguish chamber (24) is arranged below the electromagnetic tripping component (5).

2. The novel circuit breaker of claim 1, wherein: the switching-on driving assembly (2) comprises an electromagnetic driver, a switching-on state identification sensor (205) and a switching-off state identification sensor (206), the electromagnetic driver is provided with a push rod (204), the handle driving assembly (3) is provided with a cam (301), and the push rod (204) is arranged below the cam (301); the closing state recognition sensor (205) is arranged on the cam (301), and the opening state recognition sensor (206) is arranged on the handle driving component (3).

3. The novel circuit breaker of claim 1, wherein: the thermomagnetic drive tripping assembly transmission mechanism assembly (4) and the electric heating tripper (15); the transmission mechanism component (4) comprises a pull rod (9), a main shaft (23), a rotating shaft (16) and a lock catch (7); one end of the pull rod (9) is provided with a transmission mechanism pull rod groove (10), one end of the pull rod (9) penetrates through the handle pull rod groove, and the other end of the pull rod (9) is arranged on the movable contact flow guide piece (17) through the transmission mechanism pull rod groove; the rotating shaft (16) is provided with a torsion spring and a lock catch (7), and the main shaft (23) is connected with the rotating shaft (16) through a movable contact flow guide piece (17).

4. The novel circuit breaker of claim 3, wherein: the contact mechanism comprises a moving contact (14) and a fixed contact (13), the moving contact (14) is arranged on a moving contact flow guide piece (17), the moving contact flow guide piece is arranged on a rotating shaft (16), and the fixed contact (13) is arranged on a fixed contact flow guide piece (12); an electric heating release (15) is arranged on one side, far away from the main shaft (23), of the lock catch (7), and the electric heating release (15) is arranged on the fixed contact flow guide piece fixing piece (22).

5. The novel circuit breaker of claim 3, wherein: the lock catch (7) comprises a first lock body (701), a second lock body (702) and a third lock body (703), wherein the second lock body (702) is arranged between the first lock body (701) and the third lock body (703).

6. The novel circuit breaker of claim 5, wherein: the lock comprises a first lock body (701), a second lock body (702), a third lock body (703) and a fourth lock body (702), wherein the first lock body (701) and the second lock body (702) are V-shaped or U-shaped, and the second lock body (702) and the third lock body (703) are V-shaped or U-shaped.

7. The novel circuit breaker according to claim 5 or 6, characterized in that: the electric heating release (15) is arranged between the second lock body (702) and the third lock body (703) and is in contact with one side of the second lock body (702).

8. The novel circuit breaker according to claim 5 or 6, characterized in that: the electromagnetic tripping component (5) is arranged on one side of the third lock body (703).

9. The novel circuit breaker of claim 3, wherein: the contact mechanism comprises a first contact unit and a second contact unit; the first contact unit comprises a first moving contact and a first fixed contact, the first moving contact is arranged on a first moving contact flow guide part, and the first fixed contact is arranged on a first fixed contact flow guide part; the second contact unit comprises a second moving contact and a second fixed contact, the second moving contact is arranged on the second moving contact flow guide part, and the second fixed contact is arranged on the second fixed contact flow guide part; the first contact unit and the second contact unit are connected in parallel; the first moving contact and the second moving contact are respectively connected with the transmission mechanism.

10. The novel circuit breaker of claim 9, wherein: the torsion spring comprises a first torsion spring and a second torsion spring, the first torsion spring and the second torsion spring are both sleeved on the rotating shaft, one end of each of the first torsion spring and the second torsion spring is arranged on the lock catch, the other end of each of the first torsion springs is arranged on the first moving contact flow guide piece, and the other end of each of the second torsion springs is arranged on the second moving contact flow guide piece; the main shaft is respectively connected with the first moving contact flow guide element and the second moving contact flow guide element, and is connected with the rotating shaft through the first moving contact flow guide element and the second moving contact flow guide element.