Circuit breaker mechanism with under voltage trip

Abstract

The utility model discloses a circuit breaker mechanism with under voltage trip device, including circuit breaker mechanism main part, the circuit breaker mechanism main part is fixed with benchmark board, and benchmark board is provided with the installation gap, the installation gap is fixed with the mounting plate, the installation gap still is provided with the limiting board for limiting mounting plate and can dismantle, the mounting plate is fixed with under voltage trip main part, one end of under voltage trip main part is provided with the first trigger lever for resisting circuit breaker mechanism main part closing spring, the other end of under voltage trip main part is provided with second trigger lever, and the position of second trigger lever is provided with the limit switch that resists with it. The preset benchmark board, then through the mode of setting installation gap, can realize the quick installation of under voltage trip main part, and through the mode of setting multiple trigger lever can reach the closing switch closing of preventing through limit switch state feedback at the same time, and the real -time state is convenient for staff to know.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit breaker mechanisms, specifically to a circuit breaker mechanism equipped with an undervoltage tripping device. Background Technology

[0002] An undervoltage release device can react when the voltage at its terminals drops below 35% of its rated supply voltage, causing the switch to open and preventing the switch from closing. When applied to a circuit breaker mechanism, it can achieve the same protection effect. However, since a circuit breaker mechanism has multiple closing switches, if the distribution of each closing switch is arranged according to its location, it will occupy a lot of space and be inconvenient for wiring. Moreover, the installation of the undervoltage release device should not affect the normal operation of the circuit breaker mechanism. Therefore, it should be installed away from the path of the moving parts of the circuit breaker mechanism. Utility Model Content

[0003] To address the aforementioned problem of lacking an undervoltage tripping device capable of simultaneously operating multiple closing switches in a circuit breaker mechanism, this invention provides a circuit breaker mechanism equipped with an undervoltage tripping device.

[0004] The technical solution of this utility model is as follows: A circuit breaker mechanism equipped with an undervoltage tripping device includes a circuit breaker mechanism body, a reference plate fixed to the circuit breaker mechanism body, and an installation notch provided on the reference plate. An installation plate is fixed to the installation notch, and a limit plate for limiting the installation plate and being removable is also provided at the installation notch. The mounting plate is fixed with an undervoltage tripping body, and one end of the undervoltage tripping body is provided with a first trigger rod for abutting the closing lever of the circuit breaker mechanism body. The other end of the undervoltage release body is provided with a second trigger rod, and a limit switch that abuts against the second trigger rod is provided at the position of the second trigger rod.

[0005] By setting an installation notch, the undervoltage trip unit can be installed quickly. Furthermore, by setting multiple trigger rods, the status feedback can be provided through limit switches while preventing the closing switch from closing.

[0006] To achieve linkage, a synchronizing rod is installed through the closing lever, and the synchronizing rod can pass through multiple closing levers. Each closing lever is equipped with a corresponding closing switch.

[0007] As a preferred embodiment, the undervoltage tripping body has a magnetic attraction body for driving the trigger rod at one end near the closing lever.

[0008] To allow for proper positioning, a clearance notch is also provided at the installation notch, through which the connecting rod of the circuit breaker mechanism body passes.

[0009] For easy assembly and disassembly, the limit switch is detachably connected to the undervoltage tripping body.

[0010] To facilitate the disassembly of the undervoltage tripping body, the disassembly direction of the mounting plate relative to the mounting notch is horizontal and opposite, and is away from the main body of the circuit breaker mechanism.

[0011] To facilitate position adjustment and adaptation, the mounting plate can move relative to the reference plate along the extension and retraction direction of the first trigger rod.

[0012] As a preferred embodiment, the mounting plate is movable relative to the reference plate in a horizontal direction that is perpendicular to the extension and retraction direction of the first trigger rod.

[0013] To ensure greater stability after installation, the mounting plate has a U-shaped cross-section, and its outer surface abuts against the mounting notch and the limiting plate, respectively.

[0014] To prevent the undervoltage release body from moving, the surface of the undervoltage release body facing away from the mounting plate abuts against the mounting notch.

[0015] The beneficial effects of this utility model are as follows: This utility model is a circuit breaker mechanism with an undervoltage trip device. Based on the existing circuit breaker mechanism body, the space for installing the undervoltage trip body is increased by setting a reference plate. Moreover, it can be installed without affecting the normal use of the original circuit breaker mechanism body. Then, for the case of multiple closing switches, linkage can be achieved by setting a synchronization rod, ensuring that multiple closing switches can be controlled by a single undervoltage trip body. In addition, the undervoltage trip body is also equipped with a second trigger rod to trigger the limit switch for real-time position feedback. Attached Figure Description

[0016] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of part of the structure of this utility model; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a top view of the structure of this utility model; Figure 5 This is a schematic diagram of the reference plate structure of this utility model; The components represented by the various reference numerals in the diagram are: 1. Circuit breaker mechanism body; 2. Base plate; 21. Installation notch; 22. Clearance notch; 3. Limit plate; 4. Mounting plate; 5. Undervoltage trip body; 51. First trigger rod; 52. Second trigger rod; 53. Magnetic attraction body; 6. Limit switch; 7. Closing lever; 8. Synchronizing rod; 9. Closing switch. Detailed Implementation

[0018] Example like Figure 1-4 The circuit breaker mechanism with undervoltage tripping device shown includes a circuit breaker mechanism body 1, whose main structure is basically the same as that of other applications of this company. The difference is that the circuit breaker mechanism body 1 is fixed with a reference plate 2, such as... Figure 5 As shown, the reference plate 2 is provided with an installation notch 21, and the undervoltage release body 5 is installed through the installation notch 21. Then, the installation plate 4 is fixed at the installation notch 21. Directly installing the undervoltage release body 5 lacks a fixing point. Therefore, the installation space is provided by the installation plate 4 before installation. It is also detachable, so there is no need to consider the separation of the undervoltage release body 5 from the installation notch 21. It is only necessary to remove the installation plate 4 and separate the whole body. Finally, the installation notch 21 is also provided with a limiting plate 3 for limiting the installation plate 4 and it can be removed. By removing and installing the limiting plate 3, it is limited and can be prevented from detaching in case of accident. In addition to the limiting plate 3, the installation plate 4 also needs to be fixed to the reference plate 2 by other structures. The fixing effect only needs to meet the requirements.

[0019] Furthermore, in the above structure, in order to allow for positioning, a positioning notch 22 is also provided at the installation notch 21, and the positioning notch 22 allows the connecting rod of the circuit breaker mechanism body 1 to pass through.

[0020] Subsequently, the mounting plate 4 is fixed with an undervoltage release body 5. One end of the undervoltage release body 5 is provided with a first trigger rod 51 for abutting the closing lever 7 of the circuit breaker mechanism body 1. The working principle of the undervoltage release device will not be described in detail. It can limit the closing lever 7 by extending the first trigger rod 51, so that it cannot reach the closing state, that is, it cannot switch states.

[0021] In a preferred embodiment, the undervoltage release body 5 is provided with a magnetic attraction body 53 for driving the trigger rod at one end near the closing lever 7.

[0022] Correspondingly, unlike existing structures, the other end of the undervoltage release body 5 is equipped with a second trigger rod 52, and a limit switch 6 is positioned at the location of the second trigger rod 52 to abut against it. The limit switch 6 monitors the state of the undervoltage release body 5, and provides feedback when a change occurs, allowing staff to understand the current status of the equipment and whether the undervoltage release body 5 has performed its intended function. For ease of assembly and disassembly, the limit switch 6 is detachably connected to the undervoltage release body 5, allowing for selective installation according to actual needs.

[0023] Therefore, it can be seen that by setting the installation notch 21, the undervoltage trip body 5 can be installed quickly, and by setting multiple trigger rods, the status feedback can be provided through the limit switch 6 while preventing the closing switch 9 from closing. Moreover, the above structure is easy to disassemble and assemble, and can perform status monitoring, making it easy to use and observe.

[0024] Example 2 Based on the above embodiments, since in some cases the circuit breaker mechanism body has multiple closing switches, in order to achieve linkage, the closing lever 7 is provided with a synchronizing rod 8, and the synchronizing rod 8 can pass through multiple closing levers 7. Each closing lever 7 is provided with a corresponding closing switch 9. In this way, it is possible to set up an undervoltage tripping body 5, and restrict only one closing lever 7 while restricting all closing levers 7. For this reason, the closing lever 7 and the synchronizing rod 8 need to rotate synchronously and cannot rotate relative to each other.

[0025] Example 3 In addition to the above structure, in order to facilitate the disassembly of the undervoltage trip body 5, the disassembly direction of the mounting plate 4 relative to the mounting notch 21 is horizontally opposite and is away from the circuit breaker mechanism body 1. This method of disassembly is relatively convenient and lacks obstructive structures.

[0026] Furthermore, in order to facilitate position adjustment and adaptation, the mounting plate 4 can move relative to the reference plate 2 along the extension and retraction direction of the first trigger rod 51. After moving, it can adapt to the closing lever 7 set in different positions and ensure that it can achieve the expected resistance effect.

[0027] Furthermore, based on the above structure, the mounting plate 4 can move relative to the reference plate 2 in a horizontal and perpendicular direction to the extension and retraction of the first trigger rod 51, and is also adapted to have a certain degree of adjustability.

[0028] Example 4 Unlike Embodiment 3 described above, for greater stability after installation, the mounting plate 4 has a U-shaped cross-section, and its outer surface abuts against the mounting notch 21 and the limiting plate 3, respectively. Furthermore, no adjustment space is reserved, and to prevent the undervoltage release body 5 from moving, the surface of the undervoltage release body 5 faces away from the mounting plate 4 and abuts against the mounting notch 21.

Claims

1. A circuit breaker mechanism equipped with an undervoltage tripping device, comprising a circuit breaker mechanism body, characterized in that, The circuit breaker mechanism body is fixed with a reference plate, and the reference plate is provided with an installation notch. An installation plate is fixed at the installation notch, and a limit plate for limiting the installation plate and which can be removed is also provided at the installation notch. The mounting plate is fixed with an undervoltage tripping body, and one end of the undervoltage tripping body is provided with a first trigger rod for abutting the closing lever of the circuit breaker mechanism body. The other end of the undervoltage release body is provided with a second trigger rod, and a limit switch that abuts against the second trigger rod is provided at the position of the second trigger rod.

2. The circuit breaker mechanism with undervoltage tripping device according to claim 1, characterized in that, The closing lever is equipped with a synchronizing rod, and the synchronizing rod can pass through multiple closing levers. Each closing lever is equipped with a corresponding closing switch.

3. The circuit breaker mechanism with undervoltage tripping device according to claim 1, characterized in that, The undervoltage release body has a magnetic attraction body for driving the trigger rod at one end near the closing lever.

4. The circuit breaker mechanism with undervoltage tripping device according to claim 1, characterized in that, The installation gap is also provided with a clearance gap, through which the connecting rod of the circuit breaker mechanism body passes.

5. The circuit breaker mechanism with undervoltage tripping device according to claim 1, characterized in that, The limit switch is detachably connected to the undervoltage tripping body.

6. The circuit breaker mechanism with undervoltage tripping device according to claim 1, characterized in that, The mounting plate is disassembled in a horizontally opposite direction relative to the mounting notch, and in a direction away from the main body of the circuit breaker mechanism.

7. The circuit breaker mechanism with undervoltage tripping device according to claim 6, characterized in that, The mounting plate is movable relative to the reference plate along the extension and retraction direction of the first trigger rod.

8. The circuit breaker mechanism with undervoltage tripping device according to claim 7, characterized in that, The mounting plate is movable relative to the reference plate in a horizontal direction that is perpendicular to the extension and retraction direction of the first trigger rod.

9. The circuit breaker mechanism with undervoltage tripping device according to claim 1, characterized in that, The mounting plate has a U-shaped cross-section, and its outer surface abuts against the mounting notch and the limiting plate, respectively.

10. The circuit breaker mechanism with undervoltage tripping device according to claim 9, characterized in that, The undervoltage release body's surface away from the mounting plate abuts against the mounting notch.

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