Magnetic flux tripping structure and circuit breaker

Abstract

The utility model belongs to low -voltage electric appliance technical field discloses a kind of magnetic flux tripping structure and circuit breaker. The magnetic flux tripping structure is applied to circuit breaker, and the circuit breaker includes shell, the magnetic flux tripping structure being set in shell, traction rod and cantilever shaft. The magnetic flux tripping structure includes magnetic flux body and linkage assembly, and the magnetic flux body is set in shell, and the magnetic flux body is provided with magnetic flux push rod;Linkage assembly is rotationally arranged in shell, and when magnetic flux push rod is stretched out, it can push linkage assembly to rotate, so that linkage assembly is pressed against traction rod and makes traction rod rotate and trip;When traction rod rotates and trips, cantilever shaft rotates and presses against linkage assembly, so that linkage assembly reversely rotates, and then makes linkage assembly push magnetic flux push rod to reset. The magnetic flux tripping structure utilizes the autorotation of cantilever shaft, realizes that cantilever shaft is linked through linkage assembly to make magnetic flux push rod reset. And overall volume is smaller, and structure is simple and compact, and it can realize the transmission of action in smaller space.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a magnetic flux tripping structure and circuit breaker. Background Technology

[0002] A circuit breaker is an electrical device that plays a crucial protective role in a circuit. Its main function is to automatically disconnect the circuit when faults such as overload, short circuit, or undervoltage occur, preventing damage to electrical equipment or electrical fires, thereby ensuring the safe operation of the circuit and electrical system. When a short circuit, overload, or leakage occurs in the main circuit, the magnetic flux trip mechanism is activated, causing the operating mechanism to perform a tripping operation.

[0003] When the flux trip structure is activated, the operating mechanism needs to reset it during the closing process. Moreover, the existing flux trip structure is relatively complex and has a large overall size, which makes the flux trip structure occupy a large amount of circuit breaker space, thus resulting in a large circuit breaker size. Utility Model Content

[0004] The present invention provides a magnetic flux tripping structure and circuit breaker, which reduces the overall size and space occupied.

[0005] The above-mentioned technical problems are solved by the following technical solutions:

[0006] A magnetic flux tripping structure is used in a circuit breaker, the circuit breaker including a housing, a traction rod disposed within the housing, and a cantilever shaft; the magnetic flux tripping structure includes:

[0007] A magnetic flux body is disposed within the housing, and the magnetic flux body is provided with a magnetic flux push rod;

[0008] The linkage component is rotatably mounted inside the housing.

[0009] The magnetic flux push rod can extend and push the linkage component to rotate, so that the linkage component drives the traction rod to rotate and disengage; the cantilever shaft can drive the linkage component to rotate in the opposite direction, so that the linkage component pushes the magnetic flux push rod to reset.

[0010] In one embodiment, the linkage assembly includes a central linkage rod, a first linkage rod and a second linkage rod disposed on both sides of the central linkage rod, a first end of the central linkage rod being disposed between the first linkage rod and the magnetic flux push rod, a second end of the central linkage rod being able to overlap with the second linkage rod, and the central linkage rod, the first linkage rod and the second linkage rod being rotatably disposed within the housing;

[0011] The magnetic flux push rod can abut against the first end of the intermediate linkage rod to make the intermediate linkage rod rotate, so that the second end of the intermediate linkage rod abuts against the second linkage rod, thereby causing the second linkage rod to drive the traction rod to rotate;

[0012] The cantilever shaft can drive the first linkage rod to rotate, so that the first linkage rod presses against the first end of the intermediate linkage rod, thereby causing the intermediate linkage rod to rotate in the opposite direction to push the magnetic flux push rod to reset.

[0013] In one embodiment, the intermediate linkage rod includes an intermediate shaft rotatably disposed within the housing, a first extension arm and a second extension arm disposed on the intermediate shaft, the first extension arm being disposed between the first linkage rod and the magnetic flux push rod, and the second extension arm being capable of engaging with the second linkage rod.

[0014] In one embodiment, the first linkage rod includes a first rotating shaft rotatably disposed within the housing, a first dial plate and a second dial plate disposed on the first rotating shaft, a first end of the intermediate linkage rod being disposed between the first dial plate and the magnetic flux push rod, and the cantilever shaft being able to press against the second dial plate to cause the first linkage rod to rotate.

[0015] In one embodiment, a second pivot is provided on the upright plate inside the housing;

[0016] The second linkage is provided with a pivot hole, and the second pivot is rotatably connected to the pivot hole.

[0017] In one embodiment, the upright plate is provided with a dial hole, and the traction rod is provided with a lever, which is oscillatingly disposed within the dial hole;

[0018] The second linkage rod is provided with a protrusion, which overlaps with the lever. When the second linkage rod rotates, the protrusion pushes the lever to swing, so that the traction rod rotates to disengage.

[0019] In one embodiment, a cover is provided inside the housing, and the magnetic flux body is disposed inside the cover;

[0020] The housing is also equipped with a shunt trip unit and / or auxiliary accessories.

[0021] In one embodiment, both the intermediate linkage and the first linkage are rotatably connected to the cover.

[0022] In one embodiment, when the cantilever shaft drives the first linkage rod to rotate, the first linkage rod can abut against the cover.

[0023] The circuit breaker includes the flux tripping structure described in any of the above embodiments.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model provides a magnetic flux tripping structure. By incorporating a linkage component, the magnetic flux push rod, when extended, can drive the traction rod to rotate and trip. Furthermore, when the circuit breaker trips after the traction rod has tripped, the rotation of the cantilever shaft, through the linkage component, causes the magnetic flux push rod to reset. This magnetic flux tripping structure is small in size, occupies little internal space within the circuit breaker, and utilizes the rotation of the cantilever shaft for linkage, resulting in a simple and compact structure that enables the transmission of action within a limited space. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the internal structure of the circuit breaker provided in this embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the intermediate linkage rod involved in the embodiment of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the first linkage rod involved in the embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the second linkage rod involved in the embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the circuit breaker provided in this embodiment of the utility model.

[0031] In the picture:

[0032] 1. Housing; 11. Vertical plate; 111. Second pivot; 112. Tuning hole; 12. Cover;

[0033] 2. Towing rod; 21. Lever;

[0034] 3. Cantilever shaft; 31. Rotating shaft; 32. Cantilever;

[0035] 4. Magnetic flux body; 41. Magnetic flux push rod;

[0036] 5. Linkage assembly; 51. Intermediate linkage rod; 511. Intermediate pivot; 512. First extension arm; 513. Second extension arm; 52. First linkage rod; 521. First pivot; 522. First lever; 523. Second lever; 53. Second linkage rod; 531. Pivot hole; 532. Protrusion. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] like Figure 1 As shown, this utility model embodiment provides a magnetic flux tripping structure applied in a circuit breaker. The circuit breaker includes a housing 1, a magnetic flux tripping structure disposed within the housing 1, a traction rod 2, and a cantilever shaft 3. When a fault occurs in the circuit, the magnetic flux tripping structure actuates to cause the traction rod 2 to rotate and trip, thereby opening the circuit breaker. During the circuit breaker's opening process, the cantilever shaft 3 rotates and pulls the moving and stationary contacts in the circuit breaker to separate, thus achieving circuit breaker opening. Simultaneously, the cantilever shaft 3 drives the magnetic flux tripping structure to reset, so as not to affect the re-tethering of the traction rod 2.

[0042] Specifically, the magnetic flux tripping structure includes a magnetic flux body 4 and a linkage component 5. The magnetic flux body 4 is disposed inside the housing 1 and is equipped with a magnetic flux push rod 41. When a fault occurs in the circuit, the magnetic flux push rod 41 can extend. The linkage component 5 is rotatably disposed inside the housing 1. When the magnetic flux push rod 41 extends, it can push the linkage component 5 to rotate, so that the linkage component 5 presses against the traction rod 2 and causes the traction rod 2 to rotate and trip. After the traction rod 2 rotates and trips, the circuit breaker trips. During this process, the cantilever shaft 3 rotates and presses against the linkage component 5, so that the linkage component 5 rotates in the opposite direction, thereby causing the linkage component 5 to push the magnetic flux push rod 41 to reset.

[0043] This flux-triggered mechanism, through the linkage component 5, enables the flux push rod 41 to drive the traction rod 2 to rotate and trip when extended; and when the circuit breaker trips after the traction rod 2 trips, the rotation of the cantilever shaft 3, through the linkage component 5, causes the flux push rod 41 to reset. This flux-triggered mechanism is small in size, occupies little internal space in the circuit breaker, and utilizes the rotation of the cantilever shaft 3 for linkage, resulting in a simple and compact structure that allows for the transmission of action within a small space.

[0044] In this embodiment, the cantilever shaft 3 includes a rotating shaft 31 rotatably connected to the housing 1 and a cantilever 32 disposed on the rotating shaft 31. When the rotating shaft 31 rotates, it can drive the cantilever 32 to swing. When the cantilever 32 swings, it can drive the linkage component 5 to rotate in the opposite direction.

[0045] Optionally, the linkage assembly 5 includes an intermediate linkage rod 51, a first linkage rod 52 and a second linkage rod 53 disposed on both sides of the intermediate linkage rod 51. The intermediate linkage rod 51, the first linkage rod 52 and the second linkage rod 53 are rotatably disposed within the housing 1. The first end of the intermediate linkage rod 51 is disposed between the first linkage rod 52 and the magnetic flux push rod 41, and the second end of the intermediate linkage rod 51 is connected to the second linkage rod 53. When a circuit fault occurs, the magnetic flux push rod 41 extends and abuts against the first end of the intermediate linkage rod 51, causing the intermediate linkage rod 51 to rotate, so that the second end of the intermediate linkage rod 51 abuts against... The second linkage rod 53 is pressed, which in turn causes the second linkage rod 53 to rotate, thereby driving the traction rod 2 to rotate. When the intermediate linkage rod 51 is pushed to rotate by the magnetic flux push rod 41, the first end of the intermediate linkage rod 51 can also push the first linkage rod 52 to rotate towards the cantilever shaft 3, so that the cantilever shaft 3 can drive the first linkage rod 52 to rotate. When the cantilever shaft 3 rotates, the cantilever 32 on the cantilever shaft 3 can drive the first linkage rod 52 to rotate, so that the first linkage rod 52 can press against the first end of the intermediate linkage rod 51, thereby causing the intermediate linkage rod 51 to rotate in the opposite direction to push the magnetic flux push rod 41 to reset. This linkage assembly 5, by setting the intermediate linkage rod 51, the first linkage rod 52 and the second linkage rod 53, enables the intermediate linkage rod 51, the first linkage rod 52 and the second linkage rod 53 to be linked together, realizing the release of the traction rod 2 and the reset of the magnetic flux push rod 41. The structure is simple and compact.

[0046] Specifically, such as Figure 2 and combined Figure 1 As shown, the intermediate linkage 51 includes an intermediate rotating shaft 511 rotatably disposed within the housing 1 and a first extension arm 512 and a second extension arm 513 disposed on the intermediate rotating shaft 511. The first extension arm 512 is disposed between the first linkage 52 and the magnetic flux push rod 41, and the second extension arm 513 overlaps with the second linkage 53. When a circuit fault occurs, the magnetic flux push rod 41 extends and abuts against the first extension arm 512, causing the intermediate linkage 51 to rotate, so that the second extension arm 513 presses against the second linkage 53. When the cantilever shaft 3 rotates, the cantilever 32 on the cantilever shaft 3 can drive the first linkage 52 to rotate, so that the first linkage 52 can press against the first extension arm 512, thereby causing the intermediate linkage 51 to rotate in the opposite direction.

[0047] Specifically, such as Figure 3 and combined Figure 1As shown, the first linkage rod 52 includes a first rotating shaft 521 rotatably disposed within the housing 1, a first dial plate 522 and a second dial plate 523 disposed on the first rotating shaft 521, and a first extension arm 512 disposed between the first dial plate 522 and the magnetic flux push rod 41. When the cantilever shaft 3 rotates, the cantilever 32 of the cantilever shaft 3 can press against the second dial plate 523 to make the first linkage rod 52 rotate, thereby making the first dial plate 522 press against the first extension arm 512 to make the intermediate linkage rod 51 rotate, thereby making the first extension arm 512 push the magnetic flux push rod 41 to reset.

[0048] In this embodiment, as Figure 4 and combined Figure 1 As shown, two vertical plates 11 are provided inside the housing 1, and the traction rod 2 is rotatably connected to the two vertical plates 11. A second rotating shaft 111 is provided on one of the vertical plates 11. The second linkage rod 53 is provided with a rotating shaft hole 531, and the second rotating shaft 111 is rotatably connected to the rotating shaft hole 531 to realize the rotatable installation of the second linkage rod 53.

[0049] Furthermore, each of the two vertical plates 11 is provided with a latching hole 112, and the traction rod 2 is provided with two latches 21, which are oscillatingly positioned within the latching hole 112. The second linkage rod 53 is provided with a protrusion 532, which overlaps with the latches 21. When the second linkage rod 53 rotates, the protrusion 532 can push the latches 21 to swing, thereby causing the traction rod 2 to rotate and disengage. This structure enables the second linkage rod 53 to drive the traction rod 2 to rotate, and the structure is simple and reliable. It can be understood that when the traction rod 2 is reset and re-engaged by the return spring, the latches 21 push the protrusion 532, thereby causing the second linkage rod 53 to rotate and reset.

[0050] Optionally, such as Figure 5 As shown, a cover 12 is also provided inside the housing 1, and the magnetic flux body 4 is disposed inside the cover 12, which makes it convenient to install the magnetic flux body 4.

[0051] Optionally, the intermediate pivot 511 of the intermediate linkage 51 and the first pivot 521 of the first linkage 52 are rotatably connected to the cover 12, making the structure more compact.

[0052] Optionally, when the cantilever 32 of the cantilever shaft 3 drives the first linkage rod 52 to rotate, the second deflector 523 of the first linkage rod 52 can abut against the bottom end of the cover 12 to limit the rotation of the first linkage rod 52.

[0053] Optionally, various accessories, such as shunt trip units and / or auxiliary accessories, can be installed inside the housing 12 to achieve other functions.

[0054] This utility model embodiment also provides a circuit breaker including the above-mentioned magnetic flux tripping structure, which reduces the overall volume of the circuit breaker, making the structure compact and facilitating its application in confined spaces.

[0055] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0056] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A magnetic flux tripping structure, characterized in that, When applied to a circuit breaker, the circuit breaker includes a housing (1), a traction rod (2) disposed within the housing (1), and a cantilever shaft (3); the magnetic flux tripping structure includes: A magnetic flux body (4) is disposed inside the housing (1), and the magnetic flux body (4) is provided with a magnetic flux push rod (41); The linkage component (5) is rotatably disposed within the housing (1); The magnetic flux push rod (41) can extend and push the linkage component (5) to rotate, so that the linkage component (5) drives the traction rod (2) to rotate and disengage; the cantilever shaft (3) can drive the linkage component (5) to rotate in the opposite direction, so that the linkage component (5) pushes the magnetic flux push rod (41) to reset.

2. The magnetic flux tripping structure according to claim 1, characterized in that, The linkage assembly (5) includes an intermediate linkage rod (51), a first linkage rod (52) and a second linkage rod (53) disposed on both sides of the intermediate linkage rod (51). The first end of the intermediate linkage rod (51) is disposed between the first linkage rod (52) and the magnetic flux push rod (41). The second end of the intermediate linkage rod (51) can overlap with the second linkage rod (53). The intermediate linkage rod (51), the first linkage rod (52) and the second linkage rod (53) are all rotatably disposed within the housing (1). The magnetic flux push rod (41) can abut against the first end of the intermediate linkage rod (51) to make the intermediate linkage rod (51) rotate, so that the second end of the intermediate linkage rod (51) abuts against the second linkage rod (53), thereby causing the second linkage rod (53) to drive the traction rod (2) to rotate. The cantilever shaft (3) can drive the first linkage rod (52) to rotate, so that the first linkage rod (52) presses against the first end of the intermediate linkage rod (51), thereby causing the intermediate linkage rod (51) to rotate in the opposite direction to push the magnetic flux push rod (41) to reset.

3. The magnetic flux tripping structure according to claim 2, characterized in that, The intermediate linkage rod (51) includes an intermediate rotating shaft (511) rotatably disposed in the housing (1), a first extension arm (512) and a second extension arm (513) disposed on the intermediate rotating shaft (511), the first extension arm (512) being disposed between the first linkage rod (52) and the magnetic flux push rod (41), and the second extension arm (513) being able to overlap with the second linkage rod (53).

4. The magnetic flux tripping structure according to claim 2, characterized in that, The first linkage rod (52) includes a first rotating shaft (521) rotatably disposed in the housing (1), a first dial plate (522) disposed on the first rotating shaft (521), and a second dial plate (523). The first end of the intermediate linkage rod (51) is disposed between the first dial plate (522) and the magnetic flux push rod (41). The cantilever shaft (3) can press against the second dial plate (523) to make the first linkage rod (52) rotate.

5. The magnetic flux tripping structure according to claim 2, characterized in that, A second rotating shaft (111) is provided on the vertical plate (11) inside the housing (1); The second linkage rod (53) is provided with a pivot hole (531), and the second pivot (111) is rotatably connected to the pivot hole (531).

6. The magnetic flux tripping structure according to claim 5, characterized in that, The vertical plate (11) is provided with a dial hole (112), and the traction rod (2) is provided with a lever (21), which is swayably disposed in the dial hole (112); The second linkage rod (53) is provided with a protrusion (532), which overlaps with the lever (21). When the second linkage rod (53) rotates, the protrusion (532) pushes the lever (21) to swing, so that the traction rod (2) rotates to disengage.

7. The magnetic flux tripping structure according to any one of claims 2-6, characterized in that, The housing (1) is provided with a cover (12), and the magnetic flux body (4) is disposed inside the cover (12); The housing (12) is also equipped with a shunt trip device and / or auxiliary accessories.

8. The magnetic flux tripping structure according to claim 7, characterized in that, Both the intermediate linkage rod (51) and the first linkage rod (52) are rotatably connected to the cover (12).

9. The magnetic flux tripping structure according to claim 7, characterized in that, When the cantilever shaft (3) drives the first linkage rod (52) to rotate, the first linkage rod (52) can abut against the cover (12).

10. A circuit breaker, characterized in that, Includes the magnetic flux tripping structure described in any one of claims 1-9.

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