A multi-channel dc connection structure with a switching mechanism

Abstract

The utility model relates to electronic product technical field discloses a kind of multi-channel direct current connection structure with switching mechanism, including installation cabinet and installation bottom plate, the inside bottom end of installation cabinet is fixedly connected with battery, the inside bottom end of installation cabinet is fixedly connected with placing mounting plate one, the outside of placing mounting plate one is fixedly connected with multiple air switch, the inside of installation cabinet is fixedly connected with placing mounting plate two, the outside of placing mounting plate two is fixedly connected with multiple relay, the outside of relay is fixedly connected with terminal in four corners, the inside top end of installation cabinet is fixedly connected with wire clamping mechanism.In the utility model, pull handle to make sliding wire clamping plate and through hole placing plate through hole coincide, release hand after line bundle passes, spring drives wire clamping plate to clamp line bundle, shunt control precision, line bundle arrangement is convenient and stable, wiring is orderly, improve circuit safety and maintenance efficiency, enhance overall system practicability.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, and in particular to a multi-channel DC connection structure with a switching mechanism. Background Technology

[0002] A multi-channel DC connection structure is a hardware architecture that enables stable parallel connection of multiple DC circuits or devices, providing connection paths for multiple DC channels. The switching mechanism is a device that controls the on / off state of the circuit and the switching of channels, and can dynamically change the connection state. The two are related in that the former provides the basic framework for the latter, and the latter gives the former dynamic adjustment capabilities. When the switching mechanism is integrated into the structure, a system with both stable connection and dynamic management functions can be formed, improving adaptability to complex working conditions.

[0003] In some existing technologies, multi-channel DC connection structures with switching mechanisms first form a parallel connection foundation for multiple DC channels through multi-core connectors to ensure stable transmission of each channel. The switching mechanism is controlled by the control system to dynamically switch the channels on / off or change the path, such as switching the main and backup power supplies or distributing current. The two work together to maintain the reliability of the multi-channel connection and can be flexibly adjusted as needed to adapt to the operating requirements under complex working conditions.

[0004] However, in actual use, if the wire bundles cannot be organized, they will become messy and tangled, which not only takes up too much space and affects the compactness of the structure, but also causes the insulation layer to wear due to mutual squeezing and friction of the cables, leading to the risk of short circuit. At the same time, messy wire bundles will increase the difficulty of later maintenance, making it difficult to quickly identify specific channel lines, prolonging the troubleshooting time and reducing the efficiency of system maintenance. In order to address the above problems, a multi-channel DC connection structure with a switching mechanism is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-channel DC connection structure with a switching mechanism, aiming to improve the problem that some existing multi-channel DC connection structures with switching mechanisms cannot organize the wire bundles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-channel DC connection structure with a switching mechanism includes a mounting cabinet and a mounting base plate. A battery is fixedly connected to the bottom of the interior of the mounting cabinet. A first mounting plate is fixedly connected to the bottom of the interior of the mounting cabinet. Multiple air switches are fixedly connected to the outside of the first mounting plate. A second mounting plate is fixedly connected to the interior of the mounting cabinet. Multiple relays are fixedly connected to the outside of the second mounting plate. Terminals are fixedly connected to the four corners of each relay. A wire clamping mechanism is fixedly connected to the top of the interior of the mounting cabinet. A reciprocating heat dissipation mechanism is fixedly connected to the outside of the mounting base plate.

[0008] The wire clamping mechanism includes a through-hole placement plate, the inside of which is provided with a cavity, the outside of which is provided with a circular through hole, a reset component is provided inside the cavity, a sliding wire clamping plate is slidably connected inside the cavity, and a handle is fixedly connected to the outside of the sliding wire clamping plate.

[0009] As a further description of the above technical solution:

[0010] The reset assembly includes a telescopic rod, which is externally fixedly connected to the inside of the cavity, and a reset spring is sleeved on the outside of the telescopic rod;

[0011] As a further description of the above technical solution:

[0012] The four bottom corners of the mounting cabinet are fixedly connected to support plates, the bottom of the support plates are fixedly connected to mounting base plates, the top of the inside of the mounting cabinet is fixedly connected to a current collector box, and the bottom of the current collector box is electrically connected to a cable bundle.

[0013] As a further description of the above technical solution:

[0014] The reciprocating heat dissipation mechanism includes a dual-head motor, which is externally fixedly connected to the top of the mounting base plate. A drive rod is fixedly connected to the drive end of the dual-head motor. An eccentric wheel is fixedly connected to the outside of the drive rod. A rotating plate is rotatably connected to the outside of the eccentric wheel. A follower plate is rotatably connected to the outside of the rotating plate. A cooling fan is fixedly connected to the top of the follower plate. Multiple limiting components are fixedly connected to the left and right sides of the mounting cabinet. A limiting plate is fixedly connected to the adjacent side of the two support plates.

[0015] As a further description of the above technical solution:

[0016] The limiting component includes multiple fixing plates, which are externally fixedly connected to the left and right sides of the mounting cabinet, and the fixing plates are externally fixedly connected to limiting rods.

[0017] As a further description of the above technical solution:

[0018] The cooling fan is internally slidably connected to the outside of the limiting rod, and externally slidably connected to the left and right sides of the mounting cabinet.

[0019] As a further description of the above technical solution:

[0020] Multiple ventilation holes are provided on both the left and right sides of the exterior of the installation cabinet, and a control panel is fixedly connected to the front top of the exterior of the installation cabinet.

[0021] As a further description of the above technical solution:

[0022] One end of the reset spring is fixedly connected to the outside of the sliding wire clamp plate, and the other end of the reset spring is fixedly connected to the inside of the cavity.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the battery power supply is controlled by an air switch and a relay to switch the channel on and off, thereby realizing the load branching operation; pulling the handle makes the sliding wire clamping plate coincide with the through hole of the through hole placement plate, and after the bundle of wires passes through, the handle is released, and the spring drives the wire clamping plate to clamp the bundle of wires. The branching control is precise, the bundle of wires is convenient and stable to organize, the wiring is orderly, the circuit safety and maintenance efficiency are improved, and the overall system practicality is enhanced.

[0025] 2. In this utility model, the start-up of the dual-head motor drives the drive rod and eccentric wheel to rotate. The cooling fan slides along the limit rod through the rotating plate and follower plate to avoid deviating from the track. This achieves reciprocating cooling of electronic components in the installation cabinet, with a wide and uniform heat dissipation range, stable operation, and efficient reduction of component temperature. This ensures normal operation of the equipment and improves heat dissipation efficiency and the service life of electronic components. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a multi-channel DC connection structure with a switching mechanism proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the heat dissipation hole of a multi-channel DC connection structure with a switching mechanism proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the placement and mounting plate of a multi-channel DC connection structure with a switching mechanism proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram of a limiting plate with a switching mechanism for a multi-channel DC connection structure proposed in this utility model.

[0031] Legend:

[0032] 1. Mounting cabinet; 2. Battery; 3. Mounting plate one; 4. Air switch; 5. Mounting plate two; 6. Relay; 7. Terminal; 8. Wire clamping mechanism; 81. Through-hole mounting plate; 82. Cavity; 83. Reset assembly; 831. Telescopic rod; 832. Reset spring; 84. Sliding wire clamping plate; 85. Handle; 9. Wire bundle; 10. Current collector box; 11. Support plate; 12. Mounting base plate; 13. Reciprocating heat dissipation mechanism; 131. Dual-head motor; 132. Drive rod; 133. Eccentric wheel; 134. Rotating plate; 135. Follower plate; 136. Cooling fan; 137. Limit plate; 138. Limit assembly; 1381. Fixing plate; 1382. Limit rod; 14. Heat dissipation hole; 15. Control panel. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1 to 3 This utility model provides an embodiment of a multi-channel DC connection structure with a switching mechanism, including a mounting cabinet 1 and a mounting base plate 12. The mounting cabinet 1 serves as the main load-bearing frame of the entire structure. Its interior is divided into multiple functional areas by mounting plates 3 and 5, providing stable and safe installation space for various electrical components. A battery 2 is fixedly connected to the bottom of the mounting cabinet 1. The battery 2 can quickly switch to power supply when the external power supply system fails or is interrupted, providing uninterrupted DC power support for key equipment and circuits in the entire multi-channel DC connection structure, ensuring the continuous and stable operation of the system. Mounting plate 3 is fixedly connected to the bottom of the mounting cabinet 1, providing a stable mounting for the air switch 4. The carrier arranges and fixes multiple air switches 4 in an orderly manner according to a preset circuit layout. This not only facilitates the installation, disassembly, and maintenance of the air switches 4, but also effectively avoids safety hazards such as short circuits and leakage caused by mutual contact or positional misalignment between multiple air switches 4. Multiple air switches 4 are fixedly connected to the external mounting plate 3. An air switch 4 is an electrical component with both control and protection functions. Each air switch 4 corresponds to one or a group of DC circuits. When the circuit is working normally, the air switch 4 is in the closed state, allowing current to pass through and playing the role of controlling the circuit. When overload, short circuit, overvoltage, or other fault conditions occur in the circuit, the air switch 4 can quickly and automatically disconnect, cutting off the connection between the faulty circuit and the power supply, thereby preventing the fault from escalating.

[0035] The mounting cabinet 1 has a fixed mounting plate 2 5 inside, which provides a dedicated mounting platform for the relays 6. This ensures that the relays 6 can be firmly and stably installed inside the mounting cabinet 1. Through a reasonable layout design, multiple relays 6 are kept at appropriate distances to avoid electromagnetic interference and ensure the normal operation of the relays 6. Multiple relays 6 are fixedly connected to the outside of the mounting plate 2 5. The relays 6 are the core components for realizing the circuit switching function. By receiving external control signals, the electromagnet inside the relay 6 generates or loses magnetic force, thereby driving the contacts to close or open, realizing the switching and control of the circuit connection between different DC channels. Terminals 7 are fixedly connected to the four corners of the relays 6. The terminals 7 serve as the connection interface between the relays 6 and the external circuit. External wires are connected to the internal coil and contacts of the relays 6 by screws or clips, so that control signals can be smoothly input to the relays 6. At the same time, the relays 6 can output the switched circuit signals to the corresponding loads or other circuit components, ensuring the smooth flow of the circuit and the effective transmission of signals. This facilitates the wiring of the circuit and subsequent maintenance and repair. A wire clamping mechanism 8 is fixedly connected to the top of the inside of the mounting cabinet 1.

[0036] A reciprocating heat dissipation mechanism 13 is externally fixedly connected to the mounting base plate 12. The reciprocating heat dissipation mechanism 13 includes a dual-head motor 131, which serves as the power source for the mechanism. The dual-head motor 131 provides driving force to the entire mechanism through the rotation of its output shaft. The dual-head motor 131 is externally fixedly connected to the top of the mounting base plate 12. A drive rod 132 is fixedly connected to the drive end of the dual-head motor 131. Under the drive of the dual-head motor 131, the drive rod 132 rotates, providing power support for the rotation of the eccentric wheel 133. An eccentric wheel 133 is externally fixedly connected to the drive rod 132. When the drive rod 132 drives the eccentric wheel 133 to rotate, since its center of gravity is not on the rotation axis, it will generate eccentric motion. The eccentric wheel 133 is rotatably connected to the outside of the rotating plate 134. The rotating plate 134 is rotatably connected to the edge of the eccentric wheel 133 and can rotate flexibly with the rotation of the eccentric wheel 133. The rotating plate 134 is rotatably connected to the outside of the rotating plate 134. The following plate 135 can perform linear reciprocating motion along a preset direction, thereby driving the cooling fan 136 to reciprocate, expanding the heat dissipation range of the cooling fan 136 and improving the heat dissipation efficiency.

[0037] A cooling fan 136 is fixedly connected to the top of the follower plate 135. The cooling fan 136 reciprocates at the bottom of the mounting cabinet 1, allowing airflow to be evenly distributed to all areas inside the mounting cabinet 1, especially to areas with densely packed heat-generating components such as the battery 2, air switch 4, and relay 6. This effectively removes the heat generated by these components during operation, reducing the ambient temperature inside the mounting cabinet 1. Multiple limit components 138 are fixedly connected to the left and right sides of the outside of the mounting cabinet 1, and limit plates 1 are fixedly connected to the adjacent sides of the two support plates 11. 37. The limiting component 138 includes multiple fixed plates 1381. The fixed plates 1381 are externally fixedly connected to the left and right sides of the outside of the mounting cabinet 1. The fixed plates 1381 are externally fixedly connected to limiting rods 1382. The main function of the limiting rods 1382 is to guide and limit the reciprocating motion of the follower plate 135, ensuring that the follower plate 135 can only move in a straight line along the axis of the limiting rods 1382, avoiding the follower plate 135 from deviating, shaking or jamming during the movement, and ensuring the stable operation of the reciprocating heat dissipation mechanism 13.

[0038] The wire clamping mechanism 8 includes a through-hole placement plate 81, with a cavity 82 inside the through-hole placement plate 81. The cavity 82 can accommodate components such as the reset assembly 83 and the sliding wire clamping plate 84, and provides sufficient space for their movement. The cavity 82 allows the sliding wire clamping plate 84 to slide flexibly inside, thereby realizing the clamping and releasing operation of the wire. The cavity 82 has circular through holes on its exterior. These circular through holes are evenly distributed on the surface of the through-hole placement plate 81 corresponding to the cavity 82. The number of these holes matches the number of wires that need to be fixed. The hole diameter is slightly larger than the diameter of common wires, so that the bundled wires 9 can pass through and enter the cavity 82. The circular through holes serve to guide the bundled wires 9, so that the bundled wires 9 can accurately enter the clamping area between the sliding wire clamping plate 84 and the inner wall of the cavity 82. At the same time, they also provide a preliminary limiting effect on the bundled wires 9, preventing the bundled wires 9 from deviating significantly in the horizontal direction.

[0039] The cavity 82 is equipped with a reset assembly 83, which includes a telescopic rod 831. The main function of the telescopic rod 831 is to provide support and guidance for the reset spring 832, preventing the reset spring 832 from bending or shifting during extension and retraction, ensuring the stability of the reset force direction. It also guides the sliding of the sliding wire clamp plate 84, ensuring the straightness of its movement trajectory. The telescopic rod 831 is externally fixedly connected to the inside of the cavity 82, and the reset spring 832 is sleeved on the outside of the telescopic rod 831. When the sliding wire clamp plate 84 is pulled, the reset spring 832 is compressed and stores elastic potential energy; when the external force is removed, the reset spring 832 releases its elasticity. Potential energy pushes the sliding wire clamping plate 84 to move closer to the wire bundle 9, realizing the function of automatically clamping the wire bundle 9. The sliding wire clamping plate 84 is slidably connected inside the cavity 82. When the sliding wire clamping plate 84 moves under the action of the return spring 832, the arc-shaped groove can cooperate with the edge of the circular through hole to tightly clamp the wire bundle 9, thereby fixing the wire bundle 9. The sliding wire clamping plate 84 is fixedly connected to the outside. When it is necessary to install or remove the wire bundle 9, the sliding wire clamping plate 84 is moved by pulling the handle 85 to overcome the elastic force of the return spring 832, so that a gap is created between the sliding wire clamping plate 84 and the circular through hole, which facilitates the insertion or removal of the wire bundle 9.

[0040] Reference Figures 2 to 4 Support plates 11 are fixedly connected to the four corners of the bottom of the mounting cabinet 1. The main function of the support plates 11 is to form a support between the mounting cabinet 1 and the mounting base plate 12, and to evenly transfer the weight of the mounting cabinet 1 to the mounting base plate 12. The bottom of the support plates 11 is fixedly connected to the mounting base plate 12. A current collector box 10 is fixedly connected to the top of the interior of the mounting cabinet 1. The main function of the current collector box 10 is to centrally collect and distribute the DC current from each path in the multi-channel DC connection structure. It receives DC power from the battery 2 or an external power source, and then distributes the power to different circuit branches through the internal busbars according to the system requirements. A cable bundle 9 is electrically connected to the bottom of the current collector box 10. The cable bundle 9 mainly serves as a channel for power and signal transmission, ensuring that the power distributed by the current collector box 10 is accurately and safely transmitted. The signal is transmitted to various electrical components and control signals are also transmitted to ensure communication and collaborative work between components. The internal sliding connection of the cooling fan 136 is to the outside of the limit rod 1382. The external sliding connection of the cooling fan 136 is to the left and right sides of the outside of the mounting cabinet 1. Multiple heat dissipation holes 14 are provided on the left and right sides of the outside of the mounting cabinet 1. The control panel 15 is fixedly connected to the front of the top of the outside of the mounting cabinet 1. The control panel 15 serves as the interface between the operator and the equipment. The operator can perform various operations on the equipment through the buttons on the control panel 15, such as starting or stopping the equipment, switching DC channels, and setting operating parameters. One end of the reset spring 832 is fixedly connected to the outside of the sliding cable clamp 84, and the other end of the reset spring 832 is fixedly connected to the inside of the cavity 82.

[0041] Air switch 4 primarily handles overload and short-circuit protection. When a channel experiences an abnormal current or a short circuit, air switch 4 automatically trips and disconnects that channel to prevent the fault from spreading. Simultaneously, operators can manually operate air switch 4 to control the power supply to specific channels. Relay 6, as a key component for channel switching, changes the circuit connection by controlling the closing and opening of its contacts. For example, in a multi-channel DC source series-parallel switching scenario, the positive and negative terminals of different channels are connected to other channels or a common terminal via relay 6. The controller issues a command to control the contact of relay 6 for the corresponding channel, achieving the switching between series and parallel states. In a main / standby power switching circuit, when the main power supply is normal, relay 6 maintains a specific state, powered by the main power supply. Once the main power supply fails, relay 6 quickly activates, switching to the standby power supply to ensure continuous power supply to the load. Terminal 7 provides an interface for circuit connections. Each channel's wire connects to the corresponding terminal 7, enabling the channel to participate in the circuit. Pluggable terminals 7 facilitate flexible manual operation, while fixed terminals 7 work in conjunction with relay 6, automatically completing circuit connection and switching when relay 6 activates. The three work together, first connecting each channel circuit to the relay 6 pin through terminal 7, then the relay 6 switches the circuit according to the control signal, and the air switch 4 protects the circuit throughout the process.

[0042] Working principle: First, the DC current output from battery 2 passes through air switch 4. When air switch 4 is closed, the current is transmitted to relay 6 through cable 9. At this time, if a certain channel needs to be used, a closing signal is sent to the relay 6 of the corresponding channel. The contacts of relay 6 close, and the current flows into the current collector box 10 through cable 9. Then, the current collector box 10 distributes the current to the load corresponding to that channel, realizing the operation of that channel. When tidying up the cable 9, pulling the handle 85 outward causes the handle 85 to drive the telescopic rod 831 through the sliding cable clamp plate 84. The extension rod 831 is stretched, which causes the return spring 832 outside the extension rod 831 to deform, which causes the through hole of the sliding wire clamping plate 84 to coincide with the through hole of the through hole placement plate 81, which allows the cable bundle 9 to be connected to the current collector box 10 through the through hole of the through hole placement plate 81. Then, by releasing the handle 85, the return spring 832 outside the extension rod 831 deforms, which causes the handle 85 to drive the sliding wire clamping plate 84 to clamp the cable bundle 9 inside the through hole placement plate 81, thus achieving the clamping of the cable bundle 9.

[0043] When reciprocating to cool the electronic components inside the mounting cabinet 1, the dual-head motor 131 is started, causing the dual-head motor 131 to drive the drive rod 132 to rotate. Under the drive of the dual-head motor 131, the drive rod 132 can then drive the eccentric wheel 133 to rotate. Under the action of the eccentric wheel 133, the eccentric wheel 133 drives the rotating plate 134 to rotate. Under the action of the rotating plate 134, the rotating plate 134 drives the follower plate 135 to rotate. Under the action of the follower plate 135, the follower plate 135 drives the cooling fan 136 to slide outside the limit rod 1382, thus ensuring that the cooling fan 136 does not deviate from its original running trajectory during the sliding process.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-channel DC connection structure with a switching mechanism, comprising a mounting cabinet (1) and a mounting base plate (12), characterized in that: A battery (2) is fixedly connected to the bottom of the interior of the installation cabinet (1). A mounting plate (3) is fixedly connected to the bottom of the interior of the installation cabinet (1). Multiple air switches (4) are fixedly connected to the outside of the mounting plate (3). A mounting plate (5) is fixedly connected to the interior of the installation cabinet (1). Multiple relays (6) are fixedly connected to the outside of the mounting plate (5). Terminals (7) are fixedly connected to the four corners of the relays (6). A wire clamping mechanism (8) is fixedly connected to the top of the interior of the installation cabinet (1). A reciprocating heat dissipation mechanism (13) is fixedly connected to the outside of the mounting base plate (12). The wire clamping mechanism (8) includes a through-hole placement plate (81), the inside of which is provided with a cavity (82), the outside of which is provided with a circular through hole, a reset component (83) is provided inside the cavity (82), a sliding wire clamping plate (84) is slidably connected inside the cavity (82), and a handle (85) is fixedly connected to the outside of the sliding wire clamping plate (84).

2. The multi-channel DC connection structure with a switching mechanism according to claim 1, characterized in that: The reset assembly (83) includes a telescopic rod (831), the telescopic rod (831) is externally fixedly connected to the inside of the cavity (82), and a reset spring (832) is sleeved on the outside of the telescopic rod (831).

3. The multi-channel DC connection structure with a switching mechanism according to claim 1, characterized in that: The four bottom corners of the mounting cabinet (1) are fixedly connected to support plates (11), the bottom of the support plates (11) is fixedly connected to mounting base plates (12), the top of the inside of the mounting cabinet (1) is fixedly connected to a current collector box (10), and the bottom of the current collector box (10) is electrically connected to a cable bundle (9).

4. A multi-channel DC connection structure with a switching mechanism according to claim 3, characterized in that: The reciprocating heat dissipation mechanism (13) includes a dual-head motor (131), which is externally fixedly connected to the top of the mounting base plate (12). The driving end of the dual-head motor (131) is fixedly connected to a driving rod (132). An eccentric wheel (133) is fixedly connected to the outside of the driving rod (132). A rotating plate (134) is rotatably connected to the outside of the eccentric wheel (133). A follower plate (135) is rotatably connected to the outside of the rotating plate (134). A cooling fan (136) is fixedly connected to the top of the follower plate (135). Multiple limiting components (138) are fixedly connected to the left and right sides of the mounting cabinet (1). A limiting plate (137) is fixedly connected to the adjacent side of the two support plates (11).

5. A multi-channel DC connection structure with a switching mechanism according to claim 4, characterized in that: The limiting component (138) includes multiple fixing plates (1381), which are externally fixedly connected to the left and right sides of the mounting cabinet (1), and the fixing plates (1381) are externally fixedly connected to limiting rods (1382).

6. A multi-channel DC connection structure with a switching mechanism according to claim 5, characterized in that: The cooling fan (136) is internally slidably connected to the outside of the limiting rod (1382), and the cooling fan (136) is externally slidably connected to the left and right sides of the outside of the mounting cabinet (1).

7. A multi-channel DC connection structure with a switching mechanism according to claim 1, characterized in that: The mounting cabinet (1) has multiple heat dissipation holes (14) on both the left and right sides of its exterior, and a control panel (15) is fixedly connected to the front of the top of the mounting cabinet (1).

8. A multi-channel DC connection structure with a switching mechanism according to claim 2, characterized in that: One end of the reset spring (832) is fixedly connected to the outside of the sliding wire clamp plate (84), and the other end of the reset spring (832) is fixedly connected to the inside of the cavity (82).

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