A non-polar double-break DC circuit breaker

Abstract

The utility model discloses a kind of polarityless double-break point DC circuit breaker, it relates to circuit breaker technical field, the polarityless double-break point DC circuit breaker, including circuit breaker and the switch being set in the right end of circuit breaker, further include: the linkage roller being set in the bottom end of switch.The utility model is equipped with control mechanism, when device is in use operation, the right end side surface of circuit breaker is installed with the switch that can be made to stir, the switch is operated to open and close, the bottom end of switch is connected with lock catch, one side of lock catch is connected with contact seat, the movable contact of contact seat bottom is up and down offset with the lock catch and contact seat linkage of top end, the opening and closing state of adjusting device is adjusted, however, lock catch spring of the form as torsion spring is installed on the outside of contact seat, the opening and closing of more effective installation control circuit breaker is realized, so that assembly is simpler, assembly integration is better, required conduction force reduces, increase the creepage distance of internal corresponding component, improve the stability and reliability of device state.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a non-polar double-break DC circuit breaker. Background Technology

[0002] DC circuits lack the natural zero-crossing point of AC current, making it difficult for the arc generated during interruption to extinguish naturally. The high-temperature arc can easily burn out the contacts, damage the circuit breaker structure, and amplify circuit faults. Early DC circuit breakers were mostly single-break designs, resulting in concentrated arc energy during interruption, weak arc extinguishing capability, and long arc burning time, which exacerbated contact erosion and shortened service life. They also required additional arc-ignition components, increasing costs and reducing reliability. They were either limited by polarity or had insufficient single-break breaking capacity, failing to meet the high-efficiency and safe power distribution protection requirements of these scenarios. Therefore, it is necessary to design a non-polarity double-break DC circuit breaker.

[0003] Utility model patent CN213340257U discloses a non-polar DC miniature circuit breaker comprising two sets of support and fixing frames. The left support and fixing frame has a first-level support connecting block installed at both its upper and lower ends, while the right support and fixing frame has a second-level support connecting block installed at both its upper and lower ends. Positioning working slots are formed at opposite ends of both sets of support and fixing frames. A stepless positioning shaft is installed inside each positioning working slot, and a manual connection lever is installed at the front end of each stepless positioning shaft. A positioning fixing block is fixedly installed at the right end of each first-level support connecting block, and a limit fixing slot is formed at one end of each positioning fixing block. This design allows for quick snap-fit ​​installation between the two sets of support and fixing frames, replacing screw fixation and improving work efficiency.

[0004] However, the device lacks a control device that facilitates dual-breakpoint operation. Installing an effective and improved control device would simplify assembly, improve the integration of the assembly, reduce the required conductive force, increase the creepage distance of the corresponding internal components, and improve the stability and reliability of the device. Utility Model Content

[0005] This invention provides a non-polar double-break DC circuit breaker to solve the problem of the lack of a convenient double-break control device in existing circuits. By installing an effectively improved control device, assembly is simplified, integration is improved, the required conductive force is reduced, the creepage distance of corresponding internal components is increased, and the stability and reliability of the device are enhanced.

[0006] This utility model provides the following technical solution: a non-polar double-break DC circuit breaker, including a circuit breaker and a switch disposed at the right end of the circuit breaker, and further including: a linkage roller disposed at the bottom end of the switch, wherein a control mechanism is installed at the bottom of the linkage roller, and the control mechanism includes a latch, a contact seat, a moving contact and a latch spring.

[0007] As a preferred embodiment of the present invention, the control mechanism includes a latch installed at the bottom of the linkage roller, a contact seat connected to one side of the latch, a movable contact rotatably connected to the outer side of the bottom end of the contact seat, and a latch spring provided on the outer side of the contact seat.

[0008] As a preferred embodiment of this utility model, the contact seat is internally fixedly connected to a rotating shaft, and the rotating shaft is externally rotatably connected to a through hole.

[0009] As a preferred embodiment of this utility model, the through hole is located inside the top of the latch, and the latch and the contact seat are installed together by a through-hole and a rotating shaft.

[0010] As a preferred embodiment of this utility model, the latch has a central hole inside, and the interior of the central hole extends through the exterior of the rotating shaft.

[0011] As a preferred embodiment of this utility model, a contact spring is provided at the upper end of the moving contact, and a barb is fixedly connected to the bottom of the contact spring, with the inside of the barb being engaged with the outside of the bottom end of the moving contact.

[0012] As a preferred embodiment of this utility model, an electromagnetic coil is installed on the top right side of the circuit breaker, and a magnetic column is installed inside the electromagnetic coil.

[0013] As a preferred embodiment of this utility model, a grid is installed on the left side inside the circuit breaker, a connecting plate is connected to the end of the moving contact, and a tripping lever is snapped into the inside of the connecting plate.

[0014] Compared with the prior art, this utility model provides a non-polar double-break DC circuit breaker, which has the following advantages:

[0015] This non-polar double-break DC circuit breaker, through the setting of the control mechanism, has a switch installed on the right side of the circuit breaker that can be toggled to operate the circuit breaker's opening and closing during use. The bottom of the switch is connected to a latch, one side of which is connected to the contact seat. The moving contact at the bottom of the contact seat moves up and down in conjunction with the latch at the top and the contact seat, adjusting the opening and closing state of the device. However, a torsion spring-shaped latch spring is installed on the outside of the contact seat, which achieves more efficient installation and control of the circuit breaker's opening and closing, making assembly simpler, improving the integration of the assembly, reducing the required transmission force, increasing the creepage distance of the corresponding internal components, and improving the stability and reliability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the control mechanism structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the overall structure of the control mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram showing the internal structure of the device of this utility model.

[0020] In the diagram: 1. Circuit breaker; 2. Switch; 3. Linkage roller; 4. Control mechanism; 401. Lock; 402. Contact seat; 403. Moving contact; 404. Locking spring; 5. Rotating shaft; 6. Through hole; 7. Center hole; 8. Contact spring; 9. Barb; 10. Electromagnetic coil; 11. Magnetic column; 12. Grid; 13. Connecting plate; 14. Tripping rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 4 This utility model discloses a non-polar double-break DC circuit breaker, including a circuit breaker 1 and a switch 2 disposed at the right end of the circuit breaker 1. It also includes a linkage roller 3 disposed at the bottom end of the switch 2. A control mechanism 4 is installed at the bottom of the linkage roller 3. The control mechanism 4 includes a latch 401, a contact seat 402, a moving contact 403, and a latch spring 404.

[0023] Specifically, the control mechanism 4 includes a latch 401 installed at the bottom of the linkage roller 3. A contact seat 402 is connected to one side of the latch 401. A movable contact 403 is rotatably connected to the outer side of the bottom end of the contact seat 402. A latch spring 404 is provided on the outer side of the contact seat 402.

[0024] In this embodiment, a switch 2 that can be toggled to operate the opening and closing of the circuit breaker 1 is installed on the right side of the circuit breaker 1. A latch 401 is connected to the bottom of the switch 2. One side of the latch 401 is connected to the contact seat 402. The moving contact 403 at the bottom of the contact seat 402 moves up and down in conjunction with the latch 401 at the top and the contact seat 402 to adjust the opening and closing state of the device. However, a latch spring 404 in the form of a torsion spring is installed on the outside of the contact seat 402.

[0025] Specifically, the contact seat 402 is internally fixedly connected to a rotating shaft 5, and the rotating shaft 5 is externally rotatably connected to a through hole 6.

[0026] In this implementation scheme, the rotating shaft 5 is used for the installation of components to reduce rotational friction, limit axial movement, and ensure the stable opening and closing of the contact seat 402 and the reliable operation of the circuit breaker 1.

[0027] Specifically, the through hole 6 is located inside the top of the latch 401, and the latch 401 and the contact seat 402 are installed together by the through hole 6 through the pivot 5.

[0028] In this embodiment, the latch 401 and the contact seat 402 are rotatably assembled, ensuring that the latch 401 is flexibly linked and assisting the moving contact 403 in stable opening and closing.

[0029] Specifically, the latch 401 has a central hole 7 inside, and the interior of the central hole 7 extends through the exterior of the rotating shaft 5.

[0030] Specifically, a contact spring 8 is provided at the upper end of the moving contact 403, and a barb 9 is fixedly connected to the bottom of the contact spring 8. The inside of the barb 9 is engaged with the outside of the bottom end of the moving contact 403.

[0031] In this embodiment, the contact spring 8 is fixed by the barb 9, and the elastic force of the contact spring 8 ensures reliable contact of the moving contact 403 and buffers the impact of opening and closing.

[0032] Specifically, an electromagnetic coil 10 is installed on the top right side of the circuit breaker 1, and a magnetic column 11 is installed inside the electromagnetic coil 10.

[0033] Specifically, a grid 12 is installed on the left side inside the circuit breaker 1, and a connecting plate 13 is connected to the end of the moving contact 403. A tripping rod 14 is snapped into the inside of the connecting plate 13.

[0034] In this implementation scheme, the tripping rod 14 enables rapid disconnection in case of a fault, thereby improving the arc extinguishing capability, response speed, and operational safety of the circuit breaker 1.

[0035] The working principle and usage process of this utility model are as follows: When the device is in use, a switch 2 that can be toggled to operate the opening and closing of the circuit breaker 1 is installed on the right side of the circuit breaker 1. A latch 401 is connected to the bottom of the switch 2. One side of the latch 401 is connected to the contact seat 402. The moving contact 403 at the bottom of the contact seat 402 moves up and down in conjunction with the latch 401 at the top and the contact seat 402 to adjust the opening and closing state of the device. However, a latch spring 404 in the form of a torsion spring is installed on the outside of the contact seat 402.

[0036] In summary, this non-polar double-break DC circuit breaker, through the design of the control mechanism, achieves more efficient control of the opening and closing of circuit breaker 1, making assembly simpler, improving assembly integration, reducing the required conductive force, increasing the creepage distance of corresponding internal components, and enhancing the stability and reliability of the device.

[0037] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-polar double-break DC circuit breaker, comprising a circuit breaker (1) and a switch (2) disposed at the right end of the circuit breaker (1), characterized in that, Also includes: A linkage roller (3) is set at the bottom of the switch (2). A control mechanism (4) is installed at the bottom of the linkage roller (3). The control mechanism (4) includes a latch (401), a contact seat (402), a moving contact (403), and a latch spring (404).

2. The non-polar double-break DC circuit breaker according to claim 1, characterized in that: The control mechanism (4) includes a latch (401) installed at the bottom of the linkage roller (3). A contact seat (402) is connected to one side of the latch (401). A moving contact (403) is rotatably connected to the outer side of the bottom end of the contact seat (402). A latch spring (404) is provided on the outer side of the contact seat (402).

3. A non-polar double-break DC circuit breaker according to claim 1, characterized in that: The contact seat (402) is internally fixedly connected to a rotating shaft (5), and the rotating shaft (5) is externally rotatably connected to a through hole (6).

4. A non-polar double-break DC circuit breaker according to claim 3, characterized in that: The through hole (6) is located inside the top of the latch (401), and the latch (401) and the contact seat (402) are installed together by the through hole (6) through the pivot (5).

5. A non-polar double-break DC circuit breaker according to claim 1, characterized in that: The latch (401) has a central hole (7) inside, and the interior of the central hole (7) extends through the exterior of the rotating shaft (5).

6. A non-polar double-break DC circuit breaker according to claim 1, characterized in that: The upper end of the moving contact (403) is provided with a contact spring (8), and the bottom of the contact spring (8) is fixedly connected with a barb (9), the inside of the barb (9) is engaged with the outside of the bottom end of the moving contact (403).

7. A non-polar double-break DC circuit breaker according to claim 1, characterized in that: An electromagnetic coil (10) is installed on the top right side of the circuit breaker (1), and a magnetic column (11) is installed inside the electromagnetic coil (10).

8. A non-polar double-break DC circuit breaker according to claim 1, characterized in that: The circuit breaker (1) has a grid (12) installed on the left side inside, and the end of the moving contact (403) is connected to a connecting plate (13), and a tripping rod (14) is snapped into the inside of the connecting plate (13).

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