A bidirectional wiring device for a circuit breaker

Abstract

The utility model discloses a kind of two-way wiring devices of circuit breaker, including shell, wiring terminal is arranged on shell, wiring terminal includes wiring frame, wiring board and press line plate, wiring space is formed by hollowing out setting in the middle of wiring frame, press line plate and wiring board are located on wiring space, so that wiring space is divided into wire wiring space and busbar wiring space, first wiring port and second wiring port are equipped on the shell, limit structure is equipped on the shell, further including screw rotationally arranged on press line plate, and screw passes through wiring frame and is cooperated with its thread, when screw rotates, press line plate can be driven to be close to wiring board or away from wiring board, two independent spaces are formed between wiring board, wiring frame and press line plate, two independent spaces can realize two-way wiring, upper half-space is connected with wire, lower half-space is connected with U-shaped busbar, enough space is left, better heat dissipation, so that the temperature rise at wiring terminal drops.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a bidirectional wiring device for a circuit breaker. Background Technology

[0002] Most current circuit breakers use U-shaped busbars that are pressed onto the housing by screws on the terminals. The U-shaped busbars are fastened by the screws engaging with the threads of the housing. However, the space on the terminals for connecting the U-shaped busbars is small, which can easily lead to higher temperature rise at the terminals. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a bidirectional wiring device for a circuit breaker. The terminal block, the terminal frame and the pressure plate form two independent spaces. These two independent spaces can realize bidirectional wiring. The upper space is connected to the wires and the lower space is connected to the U-shaped busbar. Sufficient space is left for better heat dissipation and to reduce the temperature rise at the terminal.

[0004] This utility model discloses a bidirectional wiring device for a circuit breaker, comprising a housing, wherein the housing is provided with wiring terminals. The wiring terminals include a wiring frame, a wiring plate disposed on the wiring frame, and a pressure plate disposed above the wiring plate. The wiring frame has a hollowed-out middle section forming a wiring space. The pressure plate and the wiring plate are disposed on the wiring space to divide the wiring space into a conductor wiring space and a busbar wiring space. The housing is provided with a first wiring port corresponding to the conductor wiring space and a second wiring port corresponding to the busbar wiring space. The wiring frame slides vertically along the housing. A limiting structure is provided on the housing along the sliding trajectory of the wiring frame to limit its sliding stroke. The wiring plate is fixedly disposed on the housing. The device also includes a screw rotatably disposed on the pressure plate, which passes through the wiring frame and is threadedly engaged with it. When the screw rotates, it can move the pressure plate closer to or away from the wiring plate.

[0005] A further feature of this invention is that a first insulating plate is provided on the side of the pressure plate facing the first terminal, the first insulating plate moves synchronously with the pressure plate and can be moved to block the first terminal; a second insulating plate is provided on the side of the wiring frame facing the second terminal, the second insulating plate moves synchronously with the wiring frame and can be moved to block the second terminal.

[0006] A further feature of this invention is that the pressure plate is arranged in a U-shape to form a central installation space, the screw is rotatably disposed within the installation space, and the bottom of the screw abuts against the bottom of the installation space, the top of the screw protrudes from the pressure plate, and the top of the screw is also provided with an anti-detachment protrusion, which abuts against the top of the installation space.

[0007] A further feature of this invention is that the installation space is also provided with a blocking plate to limit the deflection of the screw.

[0008] A further feature of this invention is that the first insulating plate is snapped into the wire clamping plate.

[0009] A further feature of this invention is that the tail of the second insulating plate is provided with a relatively deformable positioning foot, and the housing is provided with a positioning groove arranged in the vertical direction on one side of the positioning foot. The positioning foot can elastically deform into and out of the positioning groove. When the second insulating plate is sealed on the second terminal, the positioning foot is located in the positioning groove to achieve positioning.

[0010] A further feature of this invention is that the end of the terminal block that cooperates with the pressure plate is bent and stacked to form a stacking plate, and a blocking strip is provided between the first terminal and the second terminal, the blocking strip blocking the outside of the stacking plate.

[0011] A further feature of this invention is that the second insulating plate has a plug groove on the side facing the wiring frame, the wiring frame has a plug block inserted into the plug groove, and positioning blocks are provided on opposite sides of the plug block. The plug groove has an adapter groove that matches the positioning block.

[0012] A further feature of this invention is that the top of the stacking plate is provided with a first anti-slip texture, the bottom of the stacking plate is provided with a second anti-slip texture, the bottom of the wire pressing plate is provided with a third anti-slip texture that cooperates with the first anti-slip texture, and the wiring frame is provided with a fourth anti-slip texture that cooperates with the second anti-slip texture.

[0013] A further feature of this invention is that the housing has fixing grooves on both sides opposite to the stacking plates, and the stacking plates have fixing blocks at the corresponding fixing groove positions, with the fixing blocks inserted into the fixing grooves.

[0014] The specific beneficial effects of this utility model are as follows: When the above technical solution is adopted, when an external force touches the screw and presses it down, it will drive the wiring frame to move downward, so that the wire wiring space corresponds to the first wiring port and the busbar wiring space corresponds to the second wiring port. At this time, wires and / or busbars can be connected as needed. Furthermore, when the screw rotates, the wiring frame cannot rotate due to the guide slippage, and the wiring frame is blocked by the limiting structure, which restricts its further downward movement. Therefore, when the screw rotates, it can drive the pressure plate to approach the wiring plate, thereby pressing the wire. When the pressure plate presses the wire onto the wiring plate, the wiring plate provides resistance, and the screw cannot continue to be screwed down. At this time, the wiring frame will move upward due to the rotation of the screw, and continue to move until the wiring frame presses the busbar onto the wiring plate, thereby realizing bidirectional wiring. Moreover, this method has a large installation space and good heat dissipation effect in a suspended state, resulting in a decrease in temperature rise. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the location of the wiring terminals of this utility model; Figure 3 This is a schematic diagram of part of the structure of this utility model; Figure 4 This is a schematic diagram of the structure of the terminal block of this utility model when it is not wired; Figure 5 This is a schematic diagram of another state of the terminal block of this utility model; Figure 6 This is a schematic diagram of the wiring frame structure of this utility model; Figure 7 This is a schematic diagram of the first insulating plate structure of this utility model; Figure 8 This is a schematic diagram of the screw structure of this utility model; Figure 9 This is a schematic diagram of the terminal block structure of this utility model; Figure 10 This is a schematic diagram of the second insulating plate structure of this utility model; Figure 11 This is a schematic diagram of the pressure plate structure of this utility model; Figure 12 for Figure 3 Enlarged view of part a. Detailed Implementation

[0016] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings: In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", 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 utility model 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 utility model.

[0017] This utility model discloses a bidirectional wiring device for a circuit breaker, including a housing 1 (preferably formed by inserting a base and a top cover). A wiring terminal 2 is provided on the housing 1. In this embodiment, the wiring terminal 2 includes a wiring frame 21, a wiring plate 22 disposed on the wiring frame 21, and a pressure plate 23 disposed above the wiring plate 22. The wiring frame 21 has a hollowed-out central portion forming a wiring space 211. The pressure plate 23 and the wiring plate 22 are disposed on the wiring space 211, dividing the wiring space 211 into a conductor wiring space 212 and a busbar wiring space 213. The housing 1 is provided with… The first terminal 11 corresponding to the wire connection space 212 and the second terminal 12 corresponding to the busbar connection space 213 are provided. The wiring frame 21 is guided and slidably moved on the housing 1 in the vertical direction. The housing 1 is provided with a limiting structure 3 (the limiting structure 3 is preferably a blocking surface, blocking block or stop groove) on the sliding trajectory of the wiring frame 21 to limit its sliding stroke. The wiring plate 22 is fixedly installed on the housing 1 and also includes a screw 4 rotatably installed on the pressure plate 23. The screw 4 passes through the wiring frame 21 and is threadedly engaged with it. When the screw 4 rotates, it can drive the pressure plate 23 to move closer to the wiring plate 22 or away from the wiring plate 22.

[0018] Using the above technical solution, when an external force touches and presses down on the screw 4, it will cause the wiring frame 21 to move downwards, thereby aligning the wire wiring space 212 with the first wiring port 11 and the busbar wiring space 213 with the second wiring port 12. At this time, wires and / or busbars can be connected as needed. Furthermore, when the screw 4 rotates, the wiring frame 21 cannot rotate due to guide slippage (specifically, it can be the cooperation of the guide groove and the guide block, or the blocking surface). In addition, the wiring frame 21 is blocked by the limiting structure 3, restricting its further downward movement. The screw 4 rotates downwards, causing the pressure plate 23 to move closer to the terminal block 22, thus pressing the wire. When the pressure plate 23 presses the wire onto the terminal block 22, the terminal block 22 provides resistance, preventing the screw 4 from turning down further. At this point, the screw 4 rotates further, and the terminal frame 21 moves upwards due to the rotation of the screw 4. This movement continues until the terminal frame 21 presses the busbar onto the terminal block 22, thus achieving bidirectional wiring. This method also provides a large installation space and good heat dissipation due to its suspended state, resulting in a decrease in temperature rise.

[0019] A first insulating plate 5 is provided on the side of the pressure plate 23 facing the first terminal 11. The first insulating plate 5 moves synchronously with the pressure plate 23 and can be moved to block the first terminal 11. A second insulating plate 6 is provided on the side of the wiring frame 21 facing the second terminal 12. The second insulating plate 6 moves synchronously with the wiring frame 21 and can be moved to block the second terminal 12. After the wiring is completed, the first insulating plate 5 can block the first terminal 11 and the second insulating plate 6 can block the second terminal 12, thereby preventing accidental contact. Moreover, the blocking method adopts linkage, so that the blocking is completed at the same time as the wiring. The structural layout is reasonable and the safety factor is higher.

[0020] The pressure plate 23 is arranged in a U-shape to form a central mounting space 231. The screw 4 is rotatably mounted in the mounting space 231, with the bottom of the screw 4 abutting against the bottom of the mounting space 231 and the top of the screw 4 protruding from the pressure plate 23. The top of the screw 4 is also provided with an anti-detachment protrusion 41, which abuts against the top of the mounting space 231. The pressure plate 23 is U-shaped, and the anti-detachment protrusion 41 prevents the screw 4 from moving up and down. When the screw 4 rotates and drives the pressure plate 23 to move, it is more stable.

[0021] The installation space 231 is also provided with a blocking plate 232 to limit the sway of the screw 4, which can further prevent the screw 4 from swaying to the side and make it more stable when rotating. The blocking plate 232 is preferably set on opposite sides of the screw 4 and is used in conjunction with one side of the pressure plate 23 to achieve blocking in three directions, leaving one direction for mounting the screw 4.

[0022] The first insulating plate 5 is snapped into the wire clamping plate 23 (preferably using mounting holes and barbs). The snap-fit ​​connection makes it convenient to assemble or disassemble the first insulating plate 5.

[0023] The second insulating plate 6 is provided with a relatively deformable positioning foot 61 at its tail. The housing 1 is provided with a positioning groove 13 arranged vertically on one side of the positioning foot 61. The positioning foot 61 can elastically deform into and out of the positioning groove 13. When the second insulating plate 6 is sealed on the second terminal 12, the positioning foot 61 is partially located in the positioning groove 13 to achieve positioning. When only the wire is connected and not the busbar, a lever can be inserted into the first terminal 11 to drive the terminal frame 21 to move upward, thereby causing the second insulating plate 6 to seal on the second terminal 12 to achieve sealing. At this time, the positioning foot 61 and the positioning groove 13 cooperate to achieve positioning. When the screw 4 is pressed by external force, the positioning foot 61 can deform relatively and disengage from the positioning groove 13, and the second terminal 12 is exposed again. When the screw 4 is rotated without external force pressing, the wire clamping plate 23 approaches the terminal plate 22.

[0024] The end of the terminal block 22 that mates with the pressure plate 23 is bent and stacked to form a stacked plate 221. A blocking strip 7 is provided between the first terminal 11 and the second terminal 12. The blocking strip 7 blocks the outside of the stacked plate 221. Since the top and bottom of the blocking strip 7 need to be flush with or exposed on the stacked plate 221, the blocking strip 7 is easy to break when the stacked plate 221 is too thin. Therefore, it adopts physical bending and stacking, which can increase the thickness of only some parts without affecting the conductivity. The thickness of the blocking strip 7 can also be increased so as not to cover the stacked plate 221.

[0025] The second insulating plate 6 has a plug groove 62 on the side facing the wiring frame 21. The wiring frame 21 has a plug block 214 inserted into the plug groove 62 (preferably, the plug groove 62 also has a tightening rib). Positioning blocks 215 are provided on opposite sides of the plug block 214. The plug groove 62 has an adapter groove 621 that matches the positioning block 215. The plug block 214 is inserted into the plug groove 62, and the wiring frame 21 can move the second insulating plate 6 by engaging with the positioning block 215 and the adapter groove 621. This also prevents the second insulating plate 6 from detaching. Preferably, the second insulating plate 6 is made of plastic so that it can deform relatively, making it easy for the positioning block 215 to enter the adapter groove 621.

[0026] The top of the stacking plate 221 is provided with a first anti-slip texture 222, the bottom of the stacking plate 221 is provided with a second anti-slip texture 223, the bottom of the wire pressing plate 23 is provided with a third anti-slip texture 233 that cooperates with the first anti-slip texture 222, and the wiring frame 21 is provided with a fourth anti-slip texture 216 that cooperates with the second anti-slip texture 223. This makes it more stable when pressing down the wires and busbars and prevents them from being pulled out.

[0027] The housing 1 has fixing grooves 14 on both sides opposite to the stacking plate 221. The stacking plate 221 has fixing blocks 224 at the positions corresponding to the fixing grooves 14. The fixing blocks 224 are inserted into the fixing grooves 14 to further prevent the wiring board 22 from shaking, making it more stable during use.

Claims

1. A bidirectional wiring device for a circuit breaker, comprising a housing (1) and terminals (2) provided on the housing (1), characterized in that: The terminal block (2) includes a wiring frame (21), a wiring plate (22) disposed on the wiring frame (21), and a pressure plate (23) disposed above the wiring plate (22). The wiring frame (21) is hollowed out in the middle to form a wiring space (211). The pressure plate (23) and the wiring plate (22) are disposed on the wiring space (211) to divide the wiring space (211) into a wire wiring space (212) and a busbar wiring space (213). The housing (1) is provided with a first wiring port (11) corresponding to the wire wiring space (212) and a busbar connection port (11). The second connection port (12) corresponding to the line space (213) is guided to slide on the housing (1) in the vertical direction. The housing (1) is provided with a limiting structure (3) on the sliding trajectory of the connection frame (21) to limit its sliding stroke. The connection plate (22) is fixedly installed on the housing (1) and also includes a screw (4) rotatably installed on the pressure plate (23). The screw (4) passes through the connection frame (21) and is threadedly engaged with it. When the screw (4) rotates, it can drive the pressure plate (23) to move closer to the connection plate (22) or away from the connection plate (22).

2. The bidirectional wiring device for a circuit breaker according to claim 1, characterized in that: The pressure plate (23) is provided with a first insulating plate (5) on the side facing the first terminal (11). The first insulating plate (5) and the pressure plate (23) are moved synchronously and can be moved to block the first terminal (11). The wiring frame (21) is provided with a second insulating plate (6) on the side facing the second terminal (12). The second insulating plate (6) and the wiring frame (21) are moved synchronously and can be moved to block the second terminal (12).

3. A bidirectional wiring device for a circuit breaker according to claim 1 or 2, characterized in that: The pressure plate (23) is arranged in a U-shape to form a central installation space (231). The screw (4) is rotatably arranged in the installation space (231), and the bottom of the screw (4) abuts against the bottom of the installation space (231). The top part of the screw (4) is exposed on the pressure plate (23), and the top of the screw (4) is also provided with an anti-detachment boss (41), which abuts against the top of the installation space (231).

4. A bidirectional wiring device for a circuit breaker according to claim 3, characterized in that: The installation space (231) is also provided with a stop plate (232) to limit the deflection of the screw (4).

5. A bidirectional wiring device for a circuit breaker according to claim 2, characterized in that: The first insulating plate (5) is snapped into the wire clamp plate (23).

6. A bidirectional wiring device for a circuit breaker according to claim 2, characterized in that: The tail of the second insulating plate (6) is provided with a positioning foot (61) that can be deformed relative to each other. The housing (1) is provided with a positioning groove (13) arranged in the vertical direction on one side of the positioning foot (61). The positioning foot (61) can be elastically deformed relative to each other to enter and exit the positioning groove (13). When the second insulating plate (6) is blocked on the second wiring port (12), the positioning foot (61) is partially located in the positioning groove (13) to achieve positioning.

7. A bidirectional wiring device for a circuit breaker according to claim 1 or 2, characterized in that: The end of the terminal block (22) that cooperates with the pressure plate (23) is bent and stacked to form a stack plate (221). A blocking strip (7) is provided between the first terminal (11) and the second terminal (12), and the blocking strip (7) blocks the outside of the stack plate (221).

8. A bidirectional wiring device for a circuit breaker according to claim 2, characterized in that: The second insulating plate (6) has a plug groove (62) on the side facing the wiring frame (21). The wiring frame (21) has a plug block (214) inserted into the plug groove (62), and positioning blocks (215) are provided on opposite sides of the plug block (214). The plug groove (62) has an adapter groove (621) that matches the positioning block (215).

9. A bidirectional wiring device for a circuit breaker according to claim 7, characterized in that: The top of the stacking plate (221) is provided with a first anti-slip texture (222), the bottom of the stacking plate (221) is provided with a second anti-slip texture (223), the bottom of the wire pressing plate (23) is provided with a third anti-slip texture (233) that cooperates with the first anti-slip texture (222), and the wiring frame (21) is provided with a fourth anti-slip texture (216) that cooperates with the second anti-slip texture (223).

10. A bidirectional wiring device for a circuit breaker according to claim 7, characterized in that: The housing (1) has fixing grooves (14) on both sides opposite to the stacking plate (221), and the stacking plate (221) has fixing blocks (224) at the positions corresponding to the fixing grooves (14), and the fixing blocks (224) are inserted into the fixing grooves (14).

Images