Circuit breaker electric connection seat and safety door

Abstract

The utility model provides a circuit breaker electric connecting seat and a safety door. The circuit breaker electric connecting seat comprises an insulating base assembly, a connecting bar, a side plate and a door opening connecting rod. The insulating base assembly is fixedly installed between the left side plate and the right side plate. The insulating base assembly comprises an insulating base, a first insulating plate, a second insulating plate and a line bank. The first insulating plate is provided with a first electric connection window. And a second electric connection window is arranged on the second insulating plate. And the door opening connecting rod is rotatably mounted on the left side plate and the right side plate. The door opening connecting rod rotates to push the first insulating plate and the second insulating plate to move at the same time, so that the first electric connecting window and the second electric connecting window are opposite, the connecting bar can penetrate through the first electric connecting window and the second electric connecting window to be electrically connected with the insulating base assembly, the structure is simple, the operation position is accurate, and safety and reliability are achieved.

Description

Technical Field

[0001] This invention relates to electrical connection bases for low-voltage circuit breakers, and more particularly to safety doors for electrical connection bases for low-voltage circuit breakers. Background Technology

[0002] In low-voltage power distribution equipment, drawer-type bases are often used to enable rapid deployment and connection of circuit breakers and other components to power lines, or to quickly disconnect and isolate them during maintenance. For rapid deployment of the circuit breaker, the sliding plates on both sides of the drawer-type base are first pulled out, the circuit breaker is placed between the two plates, and then the drawer-type base is pushed in. The mechanical transmission structure of the drawer-type base then moves the two sliding plates, thereby electrically connecting the circuit breaker body to the power line. To facilitate maintenance of the circuit breaker body on the drawer-type base, isolation, test, and connection positions are provided. In the isolation position, the circuit breaker body busbar is not connected to the drawer-type base's electrical connection device, and there is sufficient isolation distance. The circuit breaker body's mechanism is interlocked and tripped, the contact system cannot close, and manual maintenance operations can be performed. In the test position, the circuit breaker body busbar is not connected to the drawer-type base's electrical connection device, some secondary circuits of the circuit breaker body and the drawer-type base are connected, and control circuit testing can be performed. In the connected position, the circuit breaker body busbar is connected to the electrical connection device of the drawer base, allowing the circuit breaker body to perform opening and closing operations and connect to external circuits. To ensure the safety of the circuit breaker body during maintenance on the drawer base, a safety door is usually installed inside the drawer base on the insulating base housing the electrical connection device. When the circuit breaker body is in the isolated and test positions, the safety door is closed, isolating the circuit breaker body from the electrical connection device and ensuring reliable insulation between the circuit breaker body and the drawer base. Before the circuit breaker body enters the connected position, the safety door opens, allowing the circuit breaker body to be electrically connected to the electrical connection device. The existing structure has many parts, is complex, and is not entirely reliable in operation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a circuit breaker electrical connection base and safety door that are simple in structure and safe and reliable.

[0004] To achieve the above objectives, this invention designs a circuit breaker electrical connection socket and safety door, including an insulating base assembly, a connecting strip, side plates, and a door opening linkage. The insulating base assembly is fixedly installed between the left and right side plates. The insulating base assembly includes an insulating base, a first insulating plate, a second insulating plate, and a terminal block.

[0005] Specifically, a first electrical connection window is provided on the first insulating plate. A second electrical connection window is provided on the second insulating plate. The door opening linkage is rotatably mounted on the left and right side plates. The door opening linkage can push the first and second insulating plates to move, so that the first electrical connection window and the second electrical connection window are opposite each other, thereby allowing the connecting bar to pass through the first and second electrical connection windows and make an electrical connection with the insulating base assembly.

[0006] Furthermore, a first electrical connection window is provided on the first insulating plate, through which the connecting bar can pass. A first movable section and a first open section are provided on both sides of the first insulating plate, which are interconnected and smoothly transition into each other. The first movable section is arranged at an angle, and the horizontal distance between the start and end points of the first movable section is greater than or equal to the thickness of the connecting bar.

[0007] Furthermore, a second electrical connection window is provided on the second insulating plate, through which the connecting bar can pass. A second movable section and a second open section are provided on both sides of the second insulating plate, which are interconnected and smoothly transition into each other. The second movable section is arranged at an angle, with its angle opposite to that of the first movable section. The horizontal distance between the start and end points of the second movable section is greater than or equal to the thickness of the connecting bar.

[0008] Furthermore, the door opening linkage is provided with a rotating hole, through which the door opening linkage is rotatably mounted on the side plate. The door opening linkage is provided with a guide end, which can pass through the first moving section, the first opening section, the second moving section, and the second opening section.

[0009] Furthermore, the door opening linkage can simultaneously pass through the first opening section and the second opening section. When the door opening linkage simultaneously passes through the first opening section and the second opening section, the first and second electrical connection windows are opposite each other, and the connecting strip can pass through the first and second electrical connection windows. When the door opening linkage simultaneously passes through the first and second moving sections and is at the end away from the first and second opening sections, the first and second electrical connection windows are offset, and the connecting strip cannot pass through the first and second electrical connection windows.

[0010] The technical advantage of this invention is that by simultaneously actuating the first and second insulating plates with the door opening linkage, the safety door is driven to open and close, allowing the circuit breaker body to be electrically connected to the drawer base electrical connection device or reliably insulated from the drawer base electrical connection device. The structure is simple, the operating position is precise, and it is safe and reliable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the closed state of a circuit breaker electrical connection socket and safety door involved in this invention.

[0012] Figure 2 This is a schematic diagram of the open state of a circuit breaker electrical connection base and safety door involved in this invention.

[0013] Figure 3 This is a schematic diagram of the structure of the first insulating plate of a circuit breaker electrical connection base and safety door involved in this invention.

[0014] Figure 4This is a schematic diagram of the structure of the second insulating plate of a circuit breaker electrical connection base and safety door involved in this invention.

[0015] Figure 5 This is a schematic diagram of the structure of an insulating base for a circuit breaker electrical connection socket and a safety door, as described in this invention.

[0016] Figure 6 This is a schematic diagram of the ventilation and heat dissipation of the insulating base of a circuit breaker electrical connection socket and a safety door involved in this invention.

[0017] Figure 7 This is a schematic diagram of the structure of a circuit breaker electrical connection base and a safety door opening linkage involved in this invention.

[0018] Figure 8 This is a schematic diagram of the structure of the first and second insulating plates of the circuit breaker electrical connection base and the safety door in the closed state, as described in this invention.

[0019] Figure 9 This is a schematic diagram of the structure of the first and second insulating plates of the circuit breaker electrical connection base and the safety door in the open state, as described in this invention. Detailed Implementation

[0020] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended only to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0021] Marker explanation:

[0022] Insulating base assembly 1,

[0023] Insulating base 101, first insulating plate 102, second insulating plate 103, electrical connection port 104, terminal block 105.

[0024] Air intake grille 1011, ventilation grille 1012, air outlet grille 1013, wiring harness window 1014, electrical connection cavity 1015.

[0025] First moving segment 1021, first opening segment 1022, first electrical connection window 1023

[0026] Second moving segment 1031, second opening segment 1032, second electrical connection window 1033

[0027] Connecting strip 2, side plate 3,

[0028] Door opening linkage 4

[0029] Rotating hole 401, guide end 402, drive arm 403, reset hook 404.

[0030] Figure 1 and Figure 2 As shown, this embodiment of a circuit breaker electrical connection base and safety door includes an insulating base assembly 1, a connecting strip 2, side plates 3, and a door opening linkage 4. The insulating base assembly 1 is fixedly installed between the left and right side plates 3. The insulating base assembly 1 includes an insulating base 101, a first insulating plate 102, a second insulating plate 103, and a terminal block 105.

[0031] Figure 5 As shown, the insulating base 101 is provided with a plurality of electrical connection cavities 1015, the number of which is related to the configuration of the circuit breaker. Generally, each phase of the circuit breaker is provided with an incoming terminal and an outgoing terminal for connection to the distribution network. Each incoming or outgoing terminal corresponds to an electrical connection device, and each electrical connection device occupies one electrical connection cavity 1015. Figure 5 The circuit breaker shown is a three-phase circuit breaker, with the incoming and outgoing terminals of each phase arranged vertically. Figure 5 The insulating base assembly 1 has six electrical connection chambers 1015. Each electrical connection chamber 1015 has a cable tray window 1014 near the outer side of the insulating base 101. The terminal block 105 passes through the cable tray window 1014 and is fixed to the insulating base 101. The terminal block 105 is partially outside the insulating base 101 and is used for connection to the power distribution network. An air inlet grille 1011 is provided below the insulating base 101, a ventilation grille 1012 is provided in the middle of the insulating base 101, and an air outlet grille 1013 is provided above the insulating base 101. The air inlet grille 1011, the ventilation grille 1012, and the air outlet grille 1013 are aligned vertically. Figure 6 As shown, when the circuit breaker is working, cold air flows from the air inlet grille 1011, through the ventilation grille 1012, and out through the air outlet grille 1013, thereby carrying away the heat inside the circuit breaker and helping the circuit breaker to ventilate and dissipate heat.

[0032] Figure 3 As shown, a first electrical connection window 1023 is provided on the first insulating plate 102, through which the connecting strip 2 can pass. The number of the first electrical connection windows 1023 matches the number of electrical connection cavities 1015. A first moving section 1021 and a first opening section 1022 are provided on both sides of the first insulating plate 102, which are interconnected and smoothly transition into each other. The first opening section 1022 is arranged vertically. The first moving section 1021 is arranged obliquely, and the horizontal distance S between the start and end points of the first moving section 1021 is greater than or equal to the thickness H of the connecting strip 2.

[0033] Figure 4 As shown, a second electrical connection window 1033 is provided on the second insulating plate 103, through which the connecting row 2 can pass. The number of the second electrical connection windows 1033 matches the number of electrical connection cavities 1015. A second moving section 1031 and a second opening section 1032 are provided on both sides of the second insulating plate 103, which are interconnected and smoothly transition into each other. The second opening section 1032 is arranged vertically. The second moving section 1031 is arranged at an angle, with the angle of the second moving section 1031 opposite to that of the first moving section 1021. The horizontal distance S between the start and end points of the second moving section 1031 is greater than or equal to the thickness H of the connecting row 2.

[0034] Figure 7 As shown, the door opening linkage 4 is provided with a rotation hole 401, and the door opening linkage 4 is rotatably mounted on the side plate 3 through the rotation hole 401. The door opening linkage 4 is provided with a drive arm 403 facing the insulating base assembly 1. The front end of the drive arm 403 is provided with a guide end 402. The guide end 402 can pass through the first moving section 1021, the first opening section 1022, the second moving section 1031, and the second opening section 1032. The door opening linkage 4 may also be provided with a reset hook 404. The reset hook 404 can be equipped with an elastic reset element to further assist the door opening linkage 4 in resetting.

[0035] Figure 1 and Figure 8 As shown, the safety door of the present invention is in the closed state. At this time, the guide end 402 on the door opening link 4 is at the end of the first moving section 1021 away from the first opening section 1022, and the door opening link 4 is also at the end of the second moving section 1031 away from the second opening section 1032. Simultaneously, the first electric window 1023 and the second electric window 1033 are offset, i.e. Figure 8 The distance A between the adjacent sides of the first electrical connection window 1023 and the second electrical connection window 1033 shown is greater than or equal to 0, that is, the first electrical connection window 1023 is covered by the second insulating plate 103, the second electrical connection window 1033 is covered by the first insulating plate 102, the connecting bar 2 cannot pass through the first electrical connection window 1023 and the second electrical connection window 1033, and the circuit breaker body is reliably insulated from the drawer base.

[0036] Figure 2 and Figure 9As shown, the safety door of the present invention is in the open state. The door opening linkage 4 rotates, and the guide end 402 of the door opening linkage 4 moves along the first moving section 1021 of the first insulating plate 102 to the first opening section 1022. The first insulating plate 102 moves horizontally under the drive of the guide end 402 of the door opening linkage 4. Simultaneously, the guide end 402 of the door opening linkage 4 moves along the second moving section 1031 of the second insulating plate 103 to the second opening section 1032. The second insulating plate 103 moves horizontally under the drive of the guide end 402 of the door opening linkage 4. Under the drive of the door opening linkage 4, the first electrical connection window 1023 and the second electrical connection window 1033, which were relatively far apart when the safety door is closed, approach each other and gradually become opposite. Figure 9 As shown, when the guide end 402 of the door opening linkage 4 reaches the first opening section 1022 and the second opening section 1032, the width B of the overlapping portion of the first electrical connection window 1023 and the second electrical connection window 1033 is greater than the thickness of the connecting strip 2. At this time, the connecting strip 2 can pass through the first electrical connection window 1023 and the second electrical connection window 1033 to electrically connect with the insulating base assembly 1. Conversely, when the guide end 402 of the door opening linkage 4 moves back from the first opening section 1022 to the end of the first moving section 1021, and at the same time, the guide end 402 of the door opening linkage 4 moves back from the second opening section 1032 to the end of the second moving section 1031, the first insulating plate 102 and the second insulating plate 103 also move horizontally accordingly, restoring the first electrical connection window 1023 and the second electrical connection window 1033 to a state where they are mutually covered and the connecting strip 2 cannot pass through the first electrical connection window 1023 and the second electrical connection window 1033, thus maintaining the safety door closed state.

[0037] In summary, the present invention drives the opening and closing of the safety door by rotating the door opening linkage 4, which simultaneously moves the first insulating plate 102 and the second insulating plate 103 horizontally. This allows the circuit breaker body to be electrically connected to the drawer seat electrical connection device or reliably insulated from it. The structure is simple, the operating position is precise, and it is safe and reliable.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A circuit breaker electrical connection seat and safety door, comprising an insulating base assembly (1), a connection row (2), side plates (3), and an opening door connecting rod (4); The insulating base assembly (1) is fixedly installed between the left and right side plates (3); The insulating base assembly (1) comprises an insulating base (101), a first insulating plate (102), a second insulating plate (103), and a connection row (105); Characterized in that, The first insulating plate (102) is provided with a first electrical connection window (1023); The second insulating plate (103) is provided with a second electrical connection window (1033); The opening door connecting rod (4) is rotatably installed on the left and right side plates (3); The opening door connecting rod (4) can push the first insulating plate (102) and the second insulating plate (103) to move, so that the first electrical connection window (1023) is opposite to the second electrical connection window (1033), and the connection row (2) can pass through the first electrical connection window (1023) and the second electrical connection window (1033) to be electrically connected with the insulating base assembly (1).

2. The circuit breaker electrical connection and safety door of claim 1, wherein, The first insulating plate (102) is provided with a first electrical connection window (1023), and the connection row (2) can pass through the first electrical connection window (1023); The first insulating plate (102) is provided with a first electrical connection window (1023), and the connection row (2) can pass through the first electrical connection window (1023); The first moving section (1021) and the first opening section (1022) are smoothly and naturally connected to each other.

3. The circuit breaker electrical connection and safety door of claim 1, wherein, The first moving section (1021) is arranged obliquely, and the distance between the starting point and the ending point of the first moving section (1021) in the horizontal direction is greater than or equal to the thickness of the connection row (2). The second insulating plate (103) is provided with a second electrical connection window (1033), and the connection row (2) can pass through the second electrical connection window (1033); The second moving section (1031) and the second opening section (1032) are smoothly and naturally connected to each other.

4. The circuit breaker electrical connection and safety door of claim 1, wherein, The second moving section (1031) is arranged obliquely, and the oblique direction of the second moving section (1031) is opposite to that of the first moving section (1021), and the distance between the starting point and the ending point of the second moving section (1031) in the horizontal direction is greater than or equal to the thickness of the connection row (2). The opening door connecting rod (4) is provided with a rotating hole (401), and the opening door connecting rod (4) is rotatably installed on the side plate (3) through the rotating hole (401); 5. The circuit breaker electrical connection and safety door of claim 4, wherein, The opening door connecting rod (4) is provided with a guide end (402), and the guide end (402) can pass into the first moving section (1021), the first opening section (1022), the second moving section (1031), and the second opening section (1032). The opening door connecting rod (4) can simultaneously pass into the first opening section (1022) and the second opening section (1032); When the opening door connecting rod (4) simultaneously passes into the first opening section (1022) and the second opening section (1032), the first electrical connection window (1023) is opposite to the second electrical connection window (1033), and the connection row (2) can pass through the first electrical connection window (1023) and the second electrical connection window (1033). When the door opening connecting rod (4) penetrates the first moving section (1021) and the second moving section (1031) at the same time and is at one end away from the first opening section (1022) and the second opening section (1032), the first electrically connected window (1023) and the second electrically connected window (1033) are staggered, and the connecting row (2) cannot pass through the first electrically connected window (1023) and the second electrically connected window (1033).

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