A low-voltage molded case circuit breaker

Abstract

This utility model relates to the field of circuit breaker technology, and more particularly to a low-voltage molded case circuit breaker, comprising an L-shaped mounting base and a circuit breaker body mounted on the mounting base. A fixed base is fixedly connected to the mounting base, and a sliding base is horizontally slidable on the mounting base. Slots are provided on the opposite side walls of both the fixed base and the sliding base to facilitate horizontal insertion of the circuit breaker body. The device also includes: an elastic component that allows the sliding base to horizontally slide and engage with the circuit breaker body; and a limiting component that limits the circuit breaker body in the vertical direction. Compared to existing circuit breakers, this utility model, through the inclusion of the elastic component and the limiting component, not only satisfies the need for fixed installation of circuit breaker bodies of different specifications (height and width), but also simplifies operation, allowing workers to quickly remove and maintain the circuit breaker body, thus improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a low-voltage molded case circuit breaker. Background Technology

[0002] Circuit breakers are electrical distribution devices used in power grids, capable of connecting, carrying, and disconnecting current under normal and abnormal conditions such as overload and short circuits. Their dedicated electric operating mechanisms enable remote control, allowing for centralized and automatic control of the power transmission and distribution network. Currently, the operating mechanisms of molded case circuit breakers are trending towards miniaturization and intelligence.

[0003] Traditionally, when installing low-voltage molded case circuit breakers, the circuit breaker must first be aligned with pre-drilled holes in the wall. Then, a screwdriver is used to insert screws into the circuit breaker's mounting holes, screwing them into the pre-drilled holes, and gradually tightening until the circuit breaker is securely fixed, ensuring no looseness after installation. However, during maintenance and repair of the circuit breaker, each screw must be unscrewed individually for disassembly. Frequent unscrewing can easily damage the mounting surface, affecting its flatness and weakening the fixing strength during subsequent reinstallation, thus reducing the overall stability of the installation. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in the prior art, when maintaining and repairing circuit breakers, the installation surface is easily damaged due to the need to unscrew each screw individually, and the frequent unscrewing and disassembly operations. Therefore, a low-voltage molded case circuit breaker is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-voltage molded case circuit breaker includes an L-shaped mounting base and a circuit breaker body mounted on the mounting base. A fixed base is fixedly connected to the mounting base, and a sliding base is horizontally slidably mounted on the mounting base. Slots are provided on the opposite side walls of the fixed base and the sliding base to facilitate the horizontal insertion of the circuit breaker body. The circuit breaker body also includes...

[0007] An elastic component is provided on the mounting base, and the elastic component allows the sliding base to slide horizontally and engage with the circuit breaker body.

[0008] Limiting components are respectively disposed on the fixed base and the sliding base, and the limiting components are used to limit the circuit breaker body in the vertical direction.

[0009] Preferably, the elastic component includes:

[0010] The T-slot is formed on the mounting bracket;

[0011] The T-shaped block is fixedly connected to the sliding seat, and the T-shaped block and the T-shaped groove are horizontally slidably connected.

[0012] Spring 1 is fixedly connected in the T-shaped groove, and spring 1 and the T-shaped block are fixedly connected to the vertical side wall away from the circuit breaker body.

[0013] Preferably, several of the T-shaped slots are respectively formed on the vertical and horizontal sidewalls of the disassembly / assembly base.

[0014] Preferably, the limiting component includes:

[0015] The mounting slots are respectively formed on the top of the fixed seat and the sliding seat;

[0016] The connecting rod is fixedly connected within the mounting groove;

[0017] A connecting plate is rotatably sleeved on the connecting rod.

[0018] A torsion spring is sleeved on the connecting rod, and both ends of the torsion spring are fixedly connected to the mounting groove and the connecting plate, respectively.

[0019] Preferably, the limiting component further includes:

[0020] A rectangular rod, which is slidably connected to the connecting plate;

[0021] A pressure plate is fixedly connected to the end of the rectangular rod.

[0022] Spring 2 is sleeved on the rectangular rod, and both ends of spring 2 are fixedly connected to the connecting plate and the pressure plate, respectively.

[0023] A grip is fixedly connected to the end of the rectangular rod away from the pressure plate.

[0024] Preferably, the mounting base is fixedly connected with a plurality of connecting ears, and the connecting ears are threadedly connected with fastening bolts.

[0025] Compared with the prior art, the advantages of this utility model are as follows:

[0026] This utility model, through the setting of components such as elastic components and limiting components, allows for disassembly based on the actual installation space. The sliding seat can be pulled horizontally away from the circuit breaker body to remove the circuit breaker body horizontally, or the connecting plate can be rotated and the pressure plate pulled to remove the circuit breaker body vertically. While satisfying the fixed installation of circuit breaker bodies of different specifications (height and width), the operation is simple, making it convenient for staff to quickly remove the circuit breaker body for maintenance and upkeep, thus improving maintenance efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a low-voltage molded case circuit breaker proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the sliding seat and T-block in a low-voltage molded case circuit breaker proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of a limit component in a low-voltage molded case circuit breaker proposed in this utility model.

[0030] In the picture:

[0031] 1. Mounting bracket; 2. Circuit breaker body; 3. Mounting bracket;

[0032] 4. Sliding seat; 41. T-slot; 42. T-block; 43. Spring 1; 44. Slot;

[0033] 5. Mounting slot; 51. Connecting rod; 52. Connecting plate; 53. Torsion spring; 54. Rectangular rod; 55. Pressure plate; 56. Spring II; 57. Handle;

[0034] 6. Connecting lug; 61. Fastening bolt. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] Reference Figures 1-3 A low-voltage molded case circuit breaker includes an L-shaped mounting base 1 and a circuit breaker body 2 mounted on the mounting base 1. A fixed base 3 is fixedly connected to the mounting base 1, and a sliding base 4 is horizontally slidable on the mounting base 1. The horizontally sliding design of the sliding base 4, together with the slot 44, can adapt to circuit breaker bodies 2 of different widths, improving the compatibility of the device with different models of circuit breakers and eliminating the need for custom-designed installation structures for specific models. Slots 44 are provided on the opposite side walls of the fixed base 3 and the sliding base 4 to facilitate the horizontal insertion of the circuit breaker body 2. The slots 44 provide precise horizontal insertion guidance for the circuit breaker body 2, ensuring quick alignment during installation and reducing installation deviations. It also includes;

[0037] The elastic component is set on the mounting base 1, and the elastic component allows the sliding base 4 to slide horizontally and engage with the circuit breaker body 2.

[0038] Limiting components are respectively installed on the fixed base 3 and the sliding base 4. The limiting components are used to limit the circuit breaker body 2 in the vertical direction.

[0039] It should be further explained that, due to the special installation positions of the circuit breaker body 2 and the mounting base 1, the installation space is limited. The setting of the elastic component and the limiting component not only ensures the limiting and fixing installation of the circuit breaker body 2 with different heights and widths, but also allows the circuit breaker body 2 to be removed vertically upwards or horizontally when disassembling it, effectively avoiding the problem of inconvenience in removing the circuit breaker body 2 due to space constraints.

[0040] Reference Figure 2 The elastic component includes: a T-slot 41 and a spring 43.

[0041] T-slots 41 are formed on the mounting base 1; T-blocks 42 are fixedly connected to the sliding base 4, and the T-blocks 42 and T-slots 41 are horizontally slidably connected. Through the limiting characteristics of the T-shape, the sliding base 4 can be stably slid in the horizontal direction, and vertical displacement or detachment can be prevented during sliding, ensuring the smoothness of the sliding process and structural stability. A spring 43 is fixedly connected within the T-slots 41, and the spring 43 and T-blocks 42 are fixedly connected away from the vertical sidewall of the circuit breaker body 2. The spring 43 provides a continuous elastic driving force to the sliding base 4, allowing it to automatically slide towards the circuit breaker body 2 and lock tightly, eliminating the need for manual clamping force and simplifying installation. Simultaneously, the elastic deformation of the spring 43 can adapt to the width error of the circuit breaker body 2, ensuring a stable clamping force and preventing loosening of the circuit breaker body 2. Several T-slots 41 are respectively formed on the vertical and horizontal sidewalls of the mounting base 1.

[0042] Reference Figure 3 The limiting components include: mounting groove 5, connecting rod 51, connecting plate 52, and torsion spring 53.

[0043] Mounting slots 5 are respectively opened on the top of the fixed seat 3 and the sliding seat 4; the connecting rod 51 is fixedly connected in the mounting slot 5; the connecting plate 52 is rotatably sleeved on the connecting rod 51; the torsion spring 53 is sleeved on the connecting rod 51, and both ends of the torsion spring 53 are fixedly connected to the mounting slot 5 and the connecting plate 52 respectively. The connecting plate 52 is rotatably connected through the connecting rod 51. With the elastic restoring force of the torsion spring 53, when the circuit breaker body 2 needs to be removed vertically upward, the connecting plate 52 can automatically rotate upward to avoid it. After insertion, it can automatically return to its original position under the action of the torsion spring 53 and the elastic force of the second spring 56 causes the pressure plate 55 to press the circuit breaker body 2, realizing automatic vertical limiting and limiting the circuit breaker body 2 at different heights, thus improving installation efficiency.

[0044] Reference Figure 3 The limiting assembly also includes: a rectangular rod 54, a pressure plate 55, a second spring 56, and a handle 57.

[0045] A rectangular rod 54 is slidably connected to a connecting plate 52; a pressure plate 55 is fixedly connected to the end of the rectangular rod 54; a second spring 56 is sleeved on the rectangular rod 54, and both ends of the second spring 56 are fixedly connected to the connecting plate 52 and the pressure plate 55 respectively; a handle 57 is fixedly connected to the end of the rectangular rod 54 away from the pressure plate 55. The sliding connection between the rectangular rod 54 and the connecting plate 52, combined with the elastic action of the second spring 56, allows the pressure plate 55 to be flexibly adjusted in the vertical direction to adapt to circuit breaker bodies 2 of different thicknesses, ensuring that effective pressure can be applied to circuit breaker bodies 2 of various specifications.

[0046] The mounting base 1 is fixedly connected with several connecting ears 6, and fastening bolts 61 are threaded onto the connecting ears 6. The several connecting ears 6 and the threaded fastening bolts 61, through a multi-point fastening method, can firmly fix the mounting base 1 to the mounting surface, effectively avoiding loosening caused by vibration and other factors during long-term use, ensuring the installation reliability of the overall structure, and also facilitating the routine disassembly and assembly of the circuit breaker body 2 for maintenance and upkeep.

[0047] The functional principle of this utility model can be explained through the following operation methods:

[0048] When using this low-voltage molded case circuit breaker, first fix the mounting base 1 in the installation position using the connecting lug 6 and the fastening bolt 61.

[0049] When it is necessary to disassemble the circuit breaker body 2 for maintenance and upkeep, pull the sliding seat 4, the T-shaped block 42 slides along the T-shaped groove 41, compress the spring 43, and then remove the circuit breaker body 2 after the sliding seat 4 is moved away from the fixed seat 3.

[0050] When installing the circuit breaker body 2, the sliding seat 4 is operated in reverse to horizontally clamp the circuit breaker body 2 of different widths; at the same time, under the action of the second spring 56, the rectangular rod 54 is driven to slide vertically on the connecting plate 52, and the rectangular rod 54 drives the pressure plate 55 to press the circuit breaker body 2 of different heights.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low voltage molded case circuit breaker comprising a dismounting seat (1) arranged in L shape and a circuit breaker body (2) mounted on the dismounting seat (1), characterized in that, A fixed seat (3) is fixedly connected to the disassembly and assembly base (1), and a sliding seat (4) is horizontally slidably arranged on the disassembly and assembly base (1). The fixed seat (3) and the sliding seat (4) are provided with slots (44) on their opposite side walls to facilitate the horizontal insertion of the circuit breaker body (2). The base also includes: The elastic component is disposed on the mounting / removing seat (1) and the elastic component allows the sliding seat (4) to slide horizontally and engage with the circuit breaker body (2). Limiting components are respectively disposed on the fixed seat (3) and the sliding seat (4). The limiting components are used to limit the circuit breaker body (2) in the vertical direction.

2. A molded case circuit breaker of low voltage according to claim 1, characterized in that, The elastic component includes: T-slot (41), T-slot (41) is formed on the disassembly / assembly base (1); T-shaped block (42), T-shaped block (42) is fixedly connected to the sliding seat (4), and T-shaped block (42) and T-shaped groove (41) are horizontally slidably connected; Spring 1 (43) is fixedly connected in the T-slot (41), and spring 1 (43) and the T-block (42) are fixedly connected away from the vertical side wall of the circuit breaker body (2).

3. A low-voltage molded case circuit breaker according to claim 2, characterized in that, Several T-shaped grooves (41) are respectively opened on the vertical sidewall and horizontal sidewall of the disassembly base (1).

4. A low-voltage molded case circuit breaker according to claim 1, characterized in that, The limiting component includes: Mounting slots (5) are respectively opened on the top of the fixed seat (3) and the sliding seat (4); Connecting rod (51), the connecting rod (51) is fixedly connected in the mounting groove (5); Connecting plate (52), which is rotatably sleeved on the connecting rod (51); Torsion spring (53) is sleeved on the connecting rod (51), and both ends of the torsion spring (53) are fixedly connected to the mounting groove (5) and the connecting plate (52) respectively.

5. A low-voltage molded case circuit breaker according to claim 4, characterized in that, The limiting component also includes: A rectangular rod (54) is slidably connected to the connecting plate (52); Pressure plate (55) is fixedly connected to the end of the rectangular rod (54); Spring 2 (56) is sleeved on the rectangular rod (54), and both ends of spring 2 (56) are fixedly connected to the connecting plate (52) and the pressure plate (55) respectively; A handle (57) is fixedly connected to one end of the rectangular rod (54) away from the pressure plate (55).

6. A low-voltage molded case circuit breaker according to claim 1, characterized in that, The disassembly base (1) is fixedly connected with several connecting ears (6), and the connecting ears (6) are threaded with fastening bolts (61).

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