Trigger type spring terminal with self-locking function

Abstract

The utility model discloses a trigger formula spring terminal with self -locking function, including terminal seat, main spring piece, lock catch spring piece, conducting row and sliding block, through the collaborative work of sliding block, main spring piece, lock catch spring piece and conducting row etc.

Description

Technical Field

[0001] This utility model relates to the field of power systems, specifically to a trigger-type spring terminal block with self-locking function. Background Technology

[0002] In modern power systems, circuit breakers are critical devices ensuring the safe operation of circuits, and the performance of their wiring structure directly affects the installation, maintenance efficiency, and operational stability of power facilities. Currently, most plug-in circuit breakers on the market rely on traditional structures such as screw fastening and clamping plates. For example, some circuit breakers use screw terminals, requiring operators to repeatedly tighten screws with a screwdriver to secure the wires. In large-scale wiring operations, this method is time-consuming and severely restricts work efficiency. Other circuit breakers use a clamping structure with a clamping plate and nut, which is not only cumbersome to install but also prone to uneven tightening of the nut, leading to excessive localized stress on the wires or poor contact, resulting in increased circuit contact resistance, overheating, and other safety hazards. Furthermore, traditional wiring structures also require significant manpower and time for wire disassembly, making it difficult to meet the needs of rapid maintenance and emergency handling of power equipment. Therefore, developing a circuit breaker wiring structure that is easy to operate and provides stable wiring has become an urgent technical problem for the industry. Summary of the Invention

[0003] The purpose of this invention is to provide a trigger-type spring terminal block with self-locking function to address the safety issues in circuit breaker wiring.

[0004] The technical solution of this utility model:

[0005] A trigger-type spring terminal block with self-locking function includes a terminal block, a main spring plate, a locking spring plate, a conductive bar, and a slider;

[0006] The terminal block has a slider hole at one end and a wire hole at the other end. The terminal block has a first limiting surface, a spring plate slot, a locking spring plate slot, a third limiting surface, a fourth limiting surface, and a limiting hole inside.

[0007] The slider is provided with a fifth limiting surface, a second limiting surface, a third limiting surface, an arc surface, and a groove;

[0008] The main spring sheet has an arc surface, a pressing surface, a locking tongue surface, and a clamping edge; the latch spring sheet has a trigger surface and a latching surface.

[0009] The conductive busbar is provided with a boss and an anti-slip groove.

[0010] The slider is installed in the slider hole of the terminal block. When it moves downward, it contacts and limits the first limiting surface of the terminal block through the third limiting surface; when it moves upward, it contacts and limits the third limiting surface and the fourth limiting surface of the terminal block through the fifth limiting surface and the second limiting surface, respectively.

[0011] The main spring plate is fixed in the spring plate slot of the terminal block and extends towards the conductive busbar. Its position is below the slider and the wire hole, and the end of the main spring plate remains in contact with the conductive busbar.

[0012] The locking spring sheet is installed in the locking spring sheet slot of the terminal block, and its trigger surface is located directly below the wire hole.

[0013] The conductive busbar is positioned above the limiting hole of the terminal block, and its protrusion is embedded inside the limiting hole for positioning.

[0014] When the slider moves downward under external force, its arc surface presses against the compression surface of the main spring plate, driving the main spring plate to rotate clockwise; during the rotation of the main spring plate, it contacts the locking spring plate, causing the locking spring plate to rotate clockwise synchronously; after the external force is released, the main spring plate locks with the locking surface of the locking spring plate through the locking tongue surface, so that the trigger surface is positioned below the wire hole.

[0015] The wire is inserted through the wire hole and contacts the trigger surface, pushing the locking spring plate to rotate clockwise; after the main spring plate is released, it rotates counterclockwise under its own elastic force, and its clamping edge presses the wire tightly into the anti-slip groove of the conductive busbar to complete the wiring.

[0016] The beneficial effects of this utility model are:

[0017] Through the coordinated operation of components such as the slider, main spring plate, locking spring plate, and conductive busbar, a quick and easy wiring process is achieved. Specifically, when the slider moves downwards under force, it drives the main spring plate and locking spring plate to rotate clockwise, securing the wire firmly using a locking mechanism. When the external force disappears, the main spring plate rotates counterclockwise under its own elastic force to contact the wire, ensuring reliable current conduction. Furthermore, the boss design on the conductive busbar enhances the structural stability, preventing loosening or detachment during wiring. Overall, this terminal block not only improves wiring efficiency but also ensures wiring safety and stability, significantly reducing operational errors and the risk of malfunction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 , Figure 3 This is a schematic diagram of the slider of the utility model;

[0020] Figure 4 , Figure 5 This is a schematic diagram of the terminal block structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the main spring sheet of this utility model;

[0022] Figure 7 This is a schematic diagram of the locking spring sheet of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the conductive bus of this utility model;

[0024] Figure 9 This is a schematic diagram of the terminal block of this utility model in a ready-to-wire state;

[0025] Figure 10 This is a schematic diagram of the terminal block of this utility model in the wiring state;

[0026] Reference numerals: 1- Terminal block, 2- Main spring plate, 3- Locking spring plate, 4- Conductive bar, 5- Slider, 6- Fifth limiting surface, 7- Limiting platform, 8- Arc surface, 9- Wire hole, 10- Slider hole, 11- First limiting surface, 12- Spring plate slot, 13- Locking spring plate slot, 14- Limiting hole, 15- Pressing surface, 16- Locking tongue surface, 17- Edge, 18- Trigger surface, 19- Locking surface, 20- Boss, 21- Anti-slip groove, 22- Second limiting surface, 23- Third limiting surface, 24- Fourth limiting surface, 25- Groove, 26- Arc surface, 27- Inclined surface, 28- Wire. Detailed Implementation

[0027] The technical solution of this utility model is further described below, but the scope of protection is not limited to the description.

[0028] A trigger-type spring terminal block with self-locking function, characterized in that it includes a terminal block 1, a main spring plate 2, a locking spring plate 3, a conductive bar 4, and a slider 5;

[0029] The terminal block 1 has a slider hole 10 at one end and a wire hole 9 at the other end. The terminal block 1 has a first limiting surface 11, a spring plate slot 12, a locking spring plate slot 13, a third limiting surface 23, a fourth limiting surface 24 and a limiting hole 14 inside.

[0030] The slider 5 is provided with a fifth limiting surface 6, a second limiting surface 22, a third limiting surface 7, an arc surface 8, and a groove 25;

[0031] The main spring plate 2 is provided with an arc surface 26, a pressing surface 15, a locking tongue surface 16 and a clamping edge 17; the locking spring plate 3 is provided with a trigger surface 18 and a locking surface 19;

[0032] The conductive busbar 4 is provided with a boss 20 and an anti-slip groove 21.

[0033] The slider 5 is installed in the slider hole 10 of the terminal block 1. When it moves downward, it contacts and limits the first limiting surface 11 of the terminal block through the third limiting surface 7. When it moves upward, it contacts and limits the third limiting surface 23 and the fourth limiting surface 24 of the terminal block through the fifth limiting surface 6 and the second limiting surface 22, respectively.

[0034] The main spring plate 2 is fixed in the spring plate slot 12 of the terminal block 1 and extends towards the conductive busbar 4. Its position is below the slider 5 and the wire hole 9, and the end of the main spring plate 2 remains in contact with the conductive busbar 4.

[0035] The locking spring plate 3 is installed in the locking spring plate slot 13 of the terminal block 1, and its trigger surface 18 is located directly below the wire hole 9.

[0036] The conductive busbar 4 is disposed above the limiting hole 14 of the terminal block 1, and its boss 20 is embedded in the limiting hole 14 for positioning.

[0037] When the slider 5 moves downward under external force, its arc surface 8 presses against the pressing surface 15 of the main spring plate 2, driving the main spring plate 2 to rotate clockwise; during the rotation of the main spring plate 2, it contacts the locking spring plate 3, causing the locking spring plate 3 to rotate clockwise synchronously; after the external force is released, the main spring plate 2 is locked to the locking surface 19 of the locking spring plate 3 through the locking tongue surface 16, so that the trigger surface 18 is positioned below the wire hole 9.

[0038] The wire 28 is inserted through the wire hole 9 and contacts the trigger surface 18, pushing the locking spring plate 3 to rotate clockwise; after the main spring plate 2 is released, it rotates counterclockwise under its own elastic force, and its clamping edge 17 presses the wire 28 into the anti-slip groove 21 of the conductive busbar 4 to complete the wiring.

[0039] Example 1:

[0040] like Figure 9 When slider 5 moves downward under force, the arc surface 8 contacts the inclined surface 15 and the arc surface 26 on the main spring plate 2. Under the action of slider 5, the main spring plate 2 rotates clockwise. During the clockwise rotation, the main spring plate 2 contacts the inclined surface 27 of the locking spring plate 3, causing the locking spring plate 3 to rotate clockwise. When the main spring plate 2 rotates to the side of the inclined surface 27 close to slider 5, the locking spring plate 3 rotates counterclockwise under its own elastic force. After the force of slider 5 disappears, the inclined surface 16 in the main spring plate 2 contacts the locking surface 19 on the locking spring plate 3 and limits its movement. At this time, the trigger surface 18 is located below the wire hole 9, and the terminal is in the ready-to-wire state.

[0041] like Figure 10When the terminal block is in the ready-to-wire state, the wire 28 is inserted into the terminal block through the wire hole 9 and contacts the trigger surface 18 on the locking spring plate 3, causing the locking spring plate 3 to rotate clockwise. The main spring plate 2 loses its constraint and, under the action of its own elasticity, the edge 17 on the main spring plate 2 contacts the wire 28 and is subjected to force, clamping the wire 28 to one side of the conductive busbar 4, thus completing the wiring process.

Claims

1. A trigger-type spring terminal block with self-locking function, characterized in that... Includes terminal block (1), main spring plate (2), locking spring plate (3), conductive bar (4) and slider (5); The terminal block (1) has a slider hole (10) at one end and a wire hole (9) at the other end. The terminal block (1) has a first limiting surface (11), a third limiting surface (23), a fourth limiting surface (24), a spring plate slot (12), and a locking spring plate slot (13) machined below the slider hole (10). The first limiting surface (11) and the third limiting surface (23) are machined opposite each other below the slider hole, and the fourth limiting surface is machined below the third limiting surface (23). The wire hole (9) is provided with a limiting hole (14). The slider (5) is provided with a fifth limiting surface (6), a second limiting surface (22), a third limiting surface (7), an arc surface (8), and a groove (25); The main spring plate (2) is provided with an arc surface (26), a pressing surface (15), a locking tongue surface (16) and a clamping edge (17); the locking spring plate (3) is provided with a trigger surface (18) and a locking surface (19). The conductive busbar (4) is provided with a boss (20) and an anti-slip groove (21).

2. The trigger-type spring terminal block with self-locking function according to claim 1, characterized in that: The slider (5) is installed in the slider hole (10) of the terminal block (1). When it moves downward, it contacts and limits the first limiting surface (11) of the terminal block through the third limiting surface (7). When it moves upward, it contacts and limits the third limiting surface (23) and the fourth limiting surface (24) of the terminal block through the fifth limiting surface (6) and the second limiting surface (22) respectively.

3. The trigger-type spring terminal block with self-locking function according to claim 1, characterized in that: The main spring plate (2) is fixed in the spring plate slot (12) of the terminal block (1) and extends toward the conductive bus (4). Its position is below the slider (5) and the wire hole (9), and the end of the main spring plate (2) is in contact with the conductive bus (4).

4. The trigger-type spring terminal block with self-locking function according to claim 1, characterized in that: The locking spring sheet (3) is installed in the locking spring sheet slot (13) of the terminal block (1), and its trigger surface (18) is located directly below the wire hole (9).

5. The trigger-type spring terminal block with self-locking function according to claim 1, characterized in that: The conductive bus (4) is positioned above the limiting hole (14) of the terminal block (1), and its boss (20) is embedded inside the limiting hole (14) for positioning.

6. The trigger-type spring terminal block with self-locking function according to claim 1, characterized in that: When the slider (5) moves downward under external force, its arc surface (8) presses against the pressing surface (15) of the main spring plate (2), driving the main spring plate (2) to rotate clockwise; the main spring plate (2) contacts the locking spring plate (3) during rotation, causing the locking spring plate (3) to rotate clockwise synchronously; after the external force is released, the main spring plate (2) locks against the locking surface (19) of the locking spring plate (3) through the locking tongue surface (16), so that the trigger surface (18) is positioned below the wire hole (9).

7. The trigger-type spring terminal block with self-locking function according to claim 1, characterized in that: The wire (28) is inserted through the wire hole (9) and contacts the trigger surface (18), pushing the locking spring plate (3) to rotate clockwise; after the main spring plate (2) is released from the lock, it rotates counterclockwise under its own elastic force, and its clamping edge (17) presses the wire (28) into the anti-slip groove (21) of the conductive bar (4) to complete the wiring.

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