A kind of not power switching device for molded case circuit breaker

Abstract

A kind of not power switching device for moulded case circuit breaker, including: installation base, it includes mounting seat and conducting plate, each conducting plate is equipped with corresponding conducting socket, conducting plate one end is connected with moulded case circuit breaker by circuit breaker connecting piece, the other end is used for external wiring;Circuit breaker connecting piece includes plastic support and multiple connecting rows corresponding with conducting plate, plastic support is equipped with isolation plate spacing adjacent connecting row, one end of connecting row is electrically connected with incoming line end or outgoing line end of moulded case circuit breaker, the other end is electrically connected with conducting plate;Quick bypass tool, including shell and multiple conducting components isolated from each other in shell, multiple conducting components are respectively corresponding with conducting socket.The quick bypass tool of the utility model bears current conducting task after insertion, so that target moulded case circuit breaker can be safely isolated from circuit and disassembled, avoid load loop power failure due to replacement operation, improve the continuity and reliability of power supply system.

Description

Technical Field

[0001] This utility model relates to the technical field of molded case circuit breakers, specifically to an uninterruptible power switching device for molded case circuit breakers. Background Technology

[0002] In existing low-voltage power distribution systems, molded case circuit breakers are typically fixed directly to the power and load lines using bolts or clamps. This connection method is cumbersome when the circuit breaker needs replacement due to faults, aging, or the need for product upgrades. To ensure operator safety, replacing a circuit breaker requires first disconnecting the main switch upstream of it, forcing a power outage on the load circuit carried by the circuit breaker, affecting the continuity of power supply and causing inconvenience to customers.

[0003] Furthermore, during the replacement process, operators need to directly or indirectly come into contact with live conductors, which poses a risk of electric shock. For older facilities, frequent disassembly and reassembly of wire joints can easily lead to loose connections, resulting in excessive contact resistance and overheating, or damage to the cable insulation layer, creating long-term safety hazards for the power distribution system. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides an uninterruptible power switching device for molded case circuit breakers.

[0005] The technical solution of this utility model is as follows: A live-line switching device for a molded case circuit breaker, comprising: The mounting base includes a mounting seat and conductive plates. Multiple conductive plates are provided and symmetrically arranged at both ends of the mounting seat. Each conductive plate is provided with a corresponding conductive socket. One end of the conductive plate is connected to a molded case circuit breaker through a circuit breaker connector, and the other end is used for external wiring. The circuit breaker connector is provided in two symmetrical sets, which include a plastic bracket and multiple connecting bars corresponding to the conductive plate. The plastic bracket is provided with an isolation plate that separates adjacent connecting bars. One end of the connecting bar is electrically connected to the inlet or outlet of the molded case circuit breaker, and the other end is electrically connected to the conductive plate. A quick bypass tool includes a housing and multiple conductive components that are isolated from each other within the housing. Each conductive component corresponds to a conductive socket. The conductive components include an inlet conductive post and an outlet conductive post that are connected by a connecting conductor and arranged opposite to each other. The inlet and outlet conductive posts can be inserted into the corresponding conductive sockets to establish a bypass circuit.

[0006] The specific structure of the conductive socket is as follows: the conductive socket is a flexible socket, the lower part of the flexible socket is connected to the corresponding conductive plate through the first connector, and the upper part of the flexible socket can clamp the corresponding inlet or outlet conductive post.

[0007] Furthermore, the flexible socket is a cylindrical body that is open at the top and closed at the bottom. The upper outer edge of the cylindrical body has multiple long slots along its axial direction. The upper part of the cylindrical body has an inwardly contracting section, and an elastic element is sleeved on the outside of the contracting section. When the inlet or outlet conductive post passes through the circular hole of the cover into the flexible socket, it can be clamped by a certain elastic force in the upper part of the cylindrical body and the cooperation of the elastic element. It can clamp conductive posts of different specifications and maintain a fastening force to ensure reliable contact.

[0008] Preferably, the mounting base is provided with a vertical slot adapted to the isolation plate, the isolation plate is inserted into the corresponding vertical slot, and the vertical slot is located between adjacent conductive sockets.

[0009] Furthermore, the housing has a U-shaped structure and includes a cover plate and a bottom shell that can be detachably connected. The bottom shell has mutually isolated wiring cavities inside, and multiple conductive components are distributed in the corresponding wiring cavities.

[0010] To facilitate the quick insertion or removal of the quick bypass tool from the corresponding mounting base when replacing a molded case circuit breaker, the cover plate has a U-shaped structure with removal handles at both ends and reinforcing ribs at the connection between the removal handles and the cover plate.

[0011] Preferably, the mounting base also includes a cover that is plugged into the mounting base. The cover is disposed on the conductive socket and has a circular hole corresponding to the conductive socket.

[0012] Furthermore, a rubber plug that fits the circular hole is detachably connected inside.

[0013] Preferably, the mounting base is made of flame-retardant plastic, the mounting base has a slot for mounting conductive plates, the conductive plates between adjacent phases have an insulating protective structure, the mounting base has mounting holes, and the mounting base is connected to an external distribution box through a second connector passing through the mounting holes.

[0014] The beneficial effects of this utility model are as follows: By using a dedicated conductive socket on the mounting base in conjunction with a quick bypass tool, a temporary bypass circuit can be quickly established in parallel with the circuit breaker to be replaced without disconnecting the upstream power supply. Once inserted, the quick bypass tool takes over the current conduction task, allowing the target molded case circuit breaker to be safely isolated and removed from the circuit. This avoids power outages in the load circuit due to replacement operations, greatly improving the continuity and reliability of the power supply system. It meets the stringent requirements of modern power distribution systems for uninterrupted power supply and enables uninterrupted operation during the replacement, maintenance, or upgrade of molded case circuit breakers.

[0015] Traditional bolted connections require operators to perform tedious disassembly and assembly near live conductors, posing a risk of direct contact with live parts or tool short circuits. This invention employs a plug-in bypass connection, allowing operators to bypass the circuit without direct contact with live conductors. By simply using a quick bypass tool with an insulated housing, the bypass can be engaged and disengaged, transforming the main high-risk operation into a relatively safe plugging and unplugging action. Attached Figure Description

[0016] In the attached diagram: Figure 1 This is a structural diagram; Figure 2 This is a top view; Figure 3 This is a schematic diagram of the first structure for installing the base; Figure 4 This is a schematic diagram of the second structure for installing the base; Figure 5 for Figure 4 The left view; Figure 6 A schematic diagram of the structure of the housing, mounting base, and conductive socket; Figure 7 This is a schematic diagram of the conductive plate and conductive socket structure; Figure 8 This is a schematic diagram of the circuit breaker connection structure; Figure 9 This is a schematic diagram of circuit breaker connectors and the structure of a molded case circuit breaker. Figure 10 This is a schematic diagram of the shell structure; Figure 11 This is a schematic diagram of the internal structure of the shell; The components represented by the various reference numerals in the diagram are: 1. Mounting base; 101. Vertical slot; 2. Conductive plate; 3. Conductive socket; 301. Long slot; 302. Retractable section; 303. Elastic element; 4. Circuit breaker connector; 401. Plastic bracket; 402. Connecting bar; 403. Isolation plate; 5. Molded case circuit breaker; 6. Housing; 601. Cover plate; 602. Bottom shell; 603. Removal handle; 7. Connecting conductor; 8. Inlet conductive post; 9. Outlet conductive post; 10. First connector; 11. Cover; 1101. Circular hole; 12. Rubber plug. Detailed Implementation

[0017] See Figure 1 , Figure 2 As shown, an uninterruptible power switching device for a molded case circuit breaker includes a mounting base, a circuit breaker connector 4, and a quick bypass tool.

[0018] See Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the mounting base includes a mounting seat 1 and conductive plates 2. Six conductive plates 2 are symmetrically arranged at both ends of the mounting seat 1, with three conductive plates 2 at one end of the mounting seat 1. Each conductive plate 2 has a corresponding conductive socket 3, resulting in six conductive sockets 3. One end of each conductive plate 2 is connected to a molded case circuit breaker 5 via a circuit breaker connector 4, and the other end is used for external wiring. The mounting seat 1 is made of flame-retardant plastic and has slots for mounting the conductive plates 2. Adjacent conductive plates 2 have an insulating protective structure. The mounting seat 1 has mounting holes, and the mounting seat 1 is connected to an external distribution box via a second connector passing through the mounting holes. The mounting base, as a fixed component, is pre-installed and wired, enabling plug-and-play operation of the circuit breaker.

[0019] See Figure 8 and Figure 9 As shown, the circuit breaker connector 4 is symmetrically arranged in two sets, which includes a plastic bracket 401 and multiple connecting rows 402 corresponding to the conductive plate 2. There are a total of six connecting rows 402 corresponding to the conductive plate 2. The plastic bracket 401 is provided with an isolation plate 403 that spaced between adjacent connecting rows 402. Each circuit breaker connector 4 is provided with two isolation plates 403 and three connecting rows 402. One end of a single connecting row 402 is electrically connected to the inlet or outlet end of the molded case circuit breaker 5, and the other end is electrically connected to the conductive plate 2.

[0020] The quick bypass tool includes a housing 6 and three sets of conductive components that are isolated from each other within the housing 6. The three sets of conductive components correspond to conductive sockets 3 respectively. Each set of conductive components includes an inlet conductive post 8 and an outlet conductive post 9 that are connected by a connecting conductor 7 and arranged opposite to each other. The inlet conductive post 8 and the outlet conductive post 9 can be inserted into the corresponding conductive socket 3 to establish a bypass circuit.

[0021] See Figure 6 and Figure 7As shown, the specific structure of the conductive socket 3 is as follows: the conductive socket 3 can be made of copper plate through special shaping. The conductive socket 3 is an elastic socket. The lower part of the elastic socket is connected to the corresponding conductive plate 2 through the first connector 10. The upper part of the elastic socket can clamp the corresponding inlet conductive post 8 or outlet conductive post 9. The elastic socket is a cylindrical body with an open upper end and a closed lower end. The upper outer edge of the cylindrical body has multiple long slots 301 along its axial direction. The upper part of the cylindrical body has an inwardly contracting section 302. An elastic element 303 is sleeved on the outside of the contracting section 302. When the inlet conductive post 8 or outlet conductive post 9 passes through the circular hole 1101 of the cover 11 into the elastic socket, it can be clamped by a certain elastic force in the upper part of the cylindrical body and the cooperation of the elastic element 303. It can clamp conductive posts of different specifications and maintain a fastening force to ensure reliable contact. The three parallel inlet conductive posts 8 can be inserted into the three flexible sockets on one side of the corresponding mounting base 1, and the three parallel outlet conductive posts 9 can be inserted into the three flexible sockets on the other side of the corresponding mounting base 1.

[0022] The core electrical connection component is a flexible socket. Its slotted design and the matching elastic element 303 allow it to generate a continuous and uniform radial clamping force on the inserted conductive post. This dynamic elastic contact ensures low and stable contact resistance, effectively preventing problems such as poor contact and overheating caused by loose bolts, vibration, or thermal expansion and contraction. Furthermore, this structure has a certain tolerance for the tolerances of the conductive posts, ensuring reliable clamping for conductive posts of different specifications.

[0023] See Figure 10 and Figure 11 As shown, the housing 6 has a U-shaped structure and includes a detachable cover plate 601 and a bottom shell 602. The bottom shell 602 has internally isolated wiring cavities, with three sets of conductive components distributed within their respective cavities. To facilitate the quick insertion or removal of the corresponding mounting base 1 when replacing the molded case circuit breaker 5, the cover plate 601 has a U-shaped structure, with removal handles 603 at both ends. Reinforcing ribs are also provided at the connection between the removal handles 603 and the cover plate 601. One side of the cover plate 601 is marked with labels "1", "3", and "5" indicating the device's inlet terminals, and "2", "4", and "6" indicating the device's outlet terminals.

[0024] The mounting base 1 has a vertical slot 101 adapted to the isolation plate 403. The isolation plate 403 is inserted into the corresponding vertical slot 101 for phase-to-phase electrical protection. The vertical slot 101 is located between adjacent conductive sockets 3. The mounting base also includes a cover 11 that is inserted into the mounting base 1. The cover 11 is disposed on the conductive socket 3 and has a circular hole 1101 corresponding to the conductive socket 3. A rubber plug 12 adapted to the circular hole 1101 is detachably connected inside the circular hole 1101.

[0025] When installing the quick bypass tool, the conductive post of the tool should be aligned with the conductive socket 3 of the circuit breaker connector 4 and pressed in firmly. Under the action of the spring in the conductive socket 3, it can be ensured that the conductive post and the corresponding conductive socket 3 make reliable contact. The quick bypass tool is designed with a disassembly handle 603. When unloading the quick bypass tool, simply hold the handle and pull it out.

Claims

1. A non-stop switching device for molded case circuit breakers, characterized in that, include: The mounting base includes a mounting base (1) and a conductive plate (2). Multiple conductive plates (2) are provided and symmetrically arranged at both ends of the mounting base (1). Each conductive plate (2) is provided with a corresponding conductive socket (3). One end of the conductive plate (2) is connected to the molded case circuit breaker (5) through the circuit breaker connector (4), and the other end is used for external wiring. The circuit breaker connector (4) is symmetrically provided in two sets, including a plastic bracket (401) and multiple connecting bars (402) corresponding to the conductive plate (2). The plastic bracket (401) is provided with an isolation plate (403) that spaced between adjacent connecting bars (402). One end of the connecting bar (402) is electrically connected to the inlet or outlet of the molded case circuit breaker (5), and the other end is electrically connected to the conductive plate (2). The quick bypass tool includes a housing (6) and multiple conductive components that are isolated from each other within the housing (6). The multiple conductive components correspond to conductive sockets (3) respectively. The conductive components include an inlet conductive post (8) and an outlet conductive post (9) that are connected by a connecting conductor (7) and arranged opposite to each other. The inlet conductive post (8) and the outlet conductive post (9) can be inserted into the corresponding conductive sockets (3) to establish a bypass circuit.

2. The uninterruptible switching device for a molded case circuit breaker according to claim 1, characterized in that, The conductive socket (3) is an elastic socket. The lower part of the elastic socket is connected to the corresponding conductive plate (2) through the first connector (10). The upper part of the elastic socket can clamp the corresponding inlet conductive post (8) or outlet conductive post (9).

3. The uninterruptible switching device for a molded case circuit breaker according to claim 2, characterized in that, The elastic socket is a cylindrical body with an open top and a closed bottom. The upper outer part of the cylindrical body has multiple long grooves (301) along its axial direction. The upper part of the cylindrical body has an inwardly contracting section (302), and an elastic element (303) is sleeved on the outside of the contracting section (302).

4. The uninterruptible switching device for a molded case circuit breaker according to claim 1, characterized in that, The mounting base (1) is provided with a vertical slot (101) adapted to the isolation plate (403). The isolation plate (403) is inserted into the corresponding vertical slot (101). The vertical slot (101) is located between adjacent conductive sockets (3).

5. The uninterruptible switching device for a molded case circuit breaker according to claim 1, characterized in that, The housing (6) has a U-shaped structure. The housing (6) includes a cover plate (601) and a bottom shell (602) that are detachably connected. The bottom shell (602) has mutually isolated wiring cavities inside, and multiple conductive components are distributed in the corresponding wiring cavities.

6. The uninterruptible switching device for a molded case circuit breaker according to claim 5, characterized in that, The cover plate (601) has a U-shaped structure. Both ends of the cover plate (601) are provided with disassembly handles (603). The connection between the disassembly handles (603) and the cover plate (601) is also provided with reinforcing ribs.

7. The uninterruptible switching device for a molded case circuit breaker according to claim 1, characterized in that, The mounting base also includes a cover (11) that is plugged into the mounting base (1). The cover (11) is disposed on the conductive socket (3) and has a circular hole (1101) corresponding to the conductive socket (3).

8. The uninterruptible switching device for a molded case circuit breaker according to claim 7, characterized in that, A rubber plug (12) adapted to the circular hole (1101) is detachably connected inside the hole.

9. The uninterruptible switching device for a molded case circuit breaker according to claim 1, characterized in that, The mounting base (1) is made of flame-retardant plastic. The mounting base (1) is provided with a slot for mounting the conductive plate (2). The conductive plates (2) between two adjacent phases are provided with an insulating protective structure. The mounting base (1) is provided with mounting holes. The mounting base (1) is connected to the external distribution box through a second connector passing through the mounting holes.

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