A fireproof and flame-retardant copper wire flexible connection

Abstract

The present invention discloses a fireproof and flame-retardant copper wire flexible connection, which includes a row of copper wire bodies. At both ends of the row of copper wire bodies, wiring terminals are clamped and installed, and both wiring terminals penetrate and extend into the interiors of two copper joints. It further includes: the volume of the copper joints is larger than that of the wiring terminals, and installation hole grooves are provided in the interiors of both copper joints. An insulating coating is coated on the surfaces of the row of copper wire bodies. Pressing rods are slidably installed through slots on the upper and lower sides inside both copper joints. For this fireproof and flame-retardant copper wire flexible connection, by arranging a rotating shaft rotatably installed through a second torsion spring in a groove inside the limiting block, when it is necessary to disassemble, repair, and replace the wiring terminals and two pressing plates in the later stage, only need to manually rotate the rotating shaft to drive the limiting block to separate from the limiting groove, and then the wiring terminals can be pulled out, so as to facilitate the rapid repair and replacement operation in the later stage, which is more time-saving and labor-saving and reduces the operation difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of copper wire flexible connections, and particularly to a fireproof and flame-retardant copper wire flexible connection. Background Art

[0002] A copper wire flexible connection is an important component for connecting copper conductors and is widely used in power systems, buildings, and industrial equipment. It is mainly composed of multiple fine round purple copper wires twisted together, with a circular and solid shape, and they are wound around each other instead of being cross-woven. In addition, the copper wire flexible connection also includes copper joints, which can be seamless copper tubes or various terminal blocks for connecting the copper stranded wire and ensuring the smooth transmission of current. To improve the connection stability and reliability, the copper joints are usually connected to the copper stranded wire by cold pressing. The copper wire flexible connection can effectively transmit current and has strong corrosion resistance and good electrical conductivity. It is applicable to various electrical engineering applications such as high and low voltage electrical appliances, switch contacts, and distribution technology equipment, and is also widely used in large current electrolytic smelting enterprise projects such as metal smelting, electroplating, and caustic soda production in chemical industries. In addition, it is also used for flexible connections between equipment such as automobiles, electric locomotives, industrial electric furnaces, and explosion-proof electrical appliances in mines, as well as for connections between busbars;

[0003] A fireproof and flame-retardant copper wire flexible connection is a special electrical connection component that combines the basic conductive and connection functions of a copper wire flexible connection and particularly enhances its fireproof and flame-retardant properties. The main feature of this connection component is that special fireproof and flame-retardant materials are used on its outer layer or key parts to cope with possible fire situations. The selection of fireproof and flame-retardant materials is usually based on their excellent high-temperature resistance, flame-retardant or non-combustible properties, and good electrical insulation performance. These materials can effectively inhibit the spread of fire when exposed to a fire source or high temperature, providing valuable time for fire control and rescue work, and are therefore widely used in places with high requirements for electrical safety, such as high-rise buildings, commercial centers, underground facilities, chemical plants, subway tunnels, and other fields;

[0004] In the "High-temperature resistant and flame-retardant copper braided flexible connection structure" with the published patent CN113922145A, it includes a copper braid, a first pressing plate, a first connecting plate, and a high-temperature resistant unit; one end of the copper braid is fixedly connected to the first pressing plate; the first connecting plate is fixedly connected to the first pressing plate; a first mounting hole is provided on the first connecting plate; the other end of the copper braid is fixedly connected to a second pressing plate; the second connecting plate is fixedly connected to the second pressing plate; a second mounting hole is provided on the second connecting plate; a high-temperature resistant unit is provided on the second pressing plate; a first flame retardant is hermetically sleeved on the high-temperature resistant unit; since the first flame retardant, the second flame retardant, and the third flame retardant are all made of flame-retardant fabrics, the copper braid will not be burned by high temperature and open fire, so that the electrical conductivity of the copper braid will not be reduced; due to the flame-retardant particles, while obtaining a better flame-retardant effect, they can move inside the first flame retardant, thus not affecting the bending of the copper braid;

[0005] In the "Fireproof and flame-retardant copper wire flexible connection" with the published patent CN116504450A, there is a copper wire body woven by copper wires, and copper wire heads are installed on the front and back sides of the outer surface of the copper wire body; it includes: an inner insulating layer, nested and connected to the outer surface of the copper wire body, and a first ventilation hole is provided on the outer surface of the inner insulating layer, and a first extrusion cotton is nested and connected to the inner surface of the first ventilation hole, and a first refractory cotton is installed on the outer side of the outer surface of the first extrusion cotton. This fireproof and flame-retardant copper wire flexible connection is provided with an inner insulating layer that is convenient for assembly, and is combined with the first refractory cotton to form an inner flame-retardant use. The staggered arrangement of the first ventilation hole and the second ventilation hole, and the assembly of a flame-retardant layer with a flame-retardant powder bin at the staggered sandwich position can effectively conduct ventilation and automatic temperature reduction treatment while achieving flame retardance, avoiding high-temperature damage to the copper wire flexible connection;

[0006] In the "Flame-retardant copper wire flexible connection" with the published patent CN117498087A, it includes a connecting piece and a copper wire body, and the copper wire body slides inside the connecting piece; it further includes: a flame-retardant layer is wrapped around the outer end of the copper wire body, and an insulating layer is wrapped around the outer wall of the flame-retardant layer. The outer end of the insulating layer fits on the inner wall of the clamping rod, and the right end of the clamping rod slides inside the moving rod to form an anti-friction mechanism. This flame-retardant copper wire flexible connection is equipped with a clamping rod. During the process of bending the insulating layer, the bent edge of the insulating layer will pull the clamping rod to move, so that the clamping rod can move inside the moving rod, and then the clamping rod can move according to the angle of the insulating layer, so that the clamping rod can avoid the bent part of the insulating layer from being too tight, and through the sliding of the clamping rod, the insulating layer can be prevented from rubbing due to the vibration of the equipment, thus avoiding the damage of the insulating layer due to friction, and then achieving the purpose of flame retardance;

[0007] When the above fireproof and flame-retardant copper wire flexible connection is in use, after the copper wire body is inserted into the interior of the copper joint through the terminal, the inserted terminal is basically fixed and clamped by the positioning mechanism. However, after the equipment operates for a long time, the terminal will show poor contact due to wear and tear during long-term use, and it needs to be disassembled, repaired and replaced. However, the existing terminals are not convenient for disassembling, repairing and replacing after installation, which increases the operation difficulty and is not convenient for the stable use of the fireproof and flame-retardant copper wire flexible connection in the later stage;

[0008] Therefore, we propose a fireproof and flame-retardant copper wire flexible connection to solve the problems raised above. Summary of the Invention

[0009] The purpose of the present invention is to provide a fireproof and flame-retardant copper wire flexible connection to solve the problem that in the current market, after the copper wire body is inserted into the interior of the copper joint through the terminal, the inserted terminal is basically fixed and clamped by the positioning mechanism. However, after the equipment operates for a long time, the terminal will show poor contact due to wear and tear during long-term use, and it needs to be disassembled, repaired and replaced. However, the existing terminals are not convenient for disassembling, repairing and replacing after installation, which increases the operation difficulty and is not convenient for the stable use of the fireproof and flame-retardant copper wire flexible connection in the later stage as mentioned in the above background technology.

[0010] To achieve the above purpose, the present invention provides the following technical solution: A fireproof and flame-retardant copper wire flexible connection includes a row of copper wire bodies, and terminals are clamped and installed at both ends of the row of copper wire bodies. The two terminals have the same structure, and both terminals penetrate and extend into the interiors of the two copper joints;

[0011] It further includes: The volume of the copper joint is larger than that of the terminal, and installation holes are provided in the interiors of the two copper joints. The two copper joints can be positioned and installed through the two installation holes. An insulating coating is coated on the surface of the row of copper wire bodies, and the insulating coating is made of polyvinylidene fluoride (PVDF) material. Heat dissipation mesh plates are provided with grooves on the outer sides of the two copper joints;

[0012] Pressing rods are slidably installed in grooves penetrating through the upper and lower sides of the interiors of the two copper joints. Each two pressing rods are symmetrically arranged about the horizontal center line of the copper joint, and the inner ends of each pressing rod penetrate and extend to both ends of the interior of the copper joint. The inner ends of the two pressing rods are installed with pressing plates through screws, and the inner sides of the two pressing plates are clamped and connected to the upper and lower sides of the terminal, and the outer end of the terminal corresponds to the heat dissipation mesh plate.

[0013] Preferably, for the copper joint, slots are provided at both the upper and lower ends inside it, and limiting blocks are rotatably installed through compression springs. A row of limiting grooves are connected to the outer sides of both limiting blocks, and the two rows of limiting grooves are equally spaced on the outer sidewalls of the two pressing rods. The elastic force of the compression spring itself can be used to conveniently pop the limiting blocks into a row of limiting grooves in sequence, and then the pressing rods can be slidably limited to prevent the pressing rods from being misaligned or offset later.

[0014] Preferably, for the limiting block, a second torsion spring is arranged in the slot inside it, and a rotating shaft is wound and connected to the inner side of the second torsion spring. The outer end of the rotating shaft penetrates and extends to the outside of the copper joint. The elastic force of the second torsion spring itself can be used to conveniently elastically reset the position of the rotating shaft after rotation.

[0015] Preferably, heat dissipation pads are attached to the outer sides of both pressing plates. Both heat dissipation pads are made of fiber material, and the inner sides of both heat dissipation pads are attached to the upper and lower side surfaces of the terminal block. A layer of heat dissipation holes are provided inside both pressing plates, and the apertures of the two layers of heat dissipation holes are the same. The inner sides of the two layers of heat dissipation holes correspond to the upper and lower side surfaces of the terminal block respectively. The upper and lower side surfaces of the terminal block can be cooled by contacting with the two heat dissipation pads, and then the heat is dissipated through the two layers of heat dissipation holes.

[0016] Preferably, racks are provided on the outer sides of the two pressing rods, and transmission gears are meshed with the outer sides of both racks. At the same time, ropes are wound around the output ends of both transmission gears. The outer ends of both ropes are connected to a moving seat through guide wheels. The moving seat is slidably installed inside the copper joint through a return spring. A heat dissipation fin is provided at the outer end of the moving seat, and the outer side of the heat dissipation fin is attached to the outer sidewall of the terminal block. The heat dissipation fin provided at the inner end of the moving seat can be squeezed and moved to the outside of the terminal block by the elastic force of the return spring itself, and then the heat of the terminal block can be dissipated by heat conduction through the heat dissipation fin.

[0017] Preferably, ropes are wound around the output ends of both transmission gears, and two first torsion springs are provided. The two first torsion springs have the same structure, and the outer ends of both first torsion springs are connected to the inner wall of the copper joint. The elastic force of the first torsion spring itself can be used to elastically reset the position of the transmission gear after being squeezed and rotated.

[0018] Preferably, for the copper joint, two damping rods are symmetrically arranged at both the front and rear ends inside it, and a protective plate is connected to the inner ends of every two damping rods. Moreover, wiring terminals are correspondingly arranged on the inner sides of the two protective plates. For the copper joint, extrusion rods are installed at both the front and rear ends inside it through movable shafts, and the four extrusion rods are all in an inclined shape. In addition, the outer ends of the four extrusion rods are all connected to movable blocks through movable shafts. Every two movable blocks are slidably installed on the outer sides of the two protective plates through tension springs. The elastic reset of the movable blocks after the two extrusion movements can be facilitated by the elastic force of the two tension springs themselves, so that the position of the protective plate can be elastically reset.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] (1) By using pressing rods that are slidably installed through slots penetrating both the upper and lower ends of the copper joint, and then pressing plates are connected to the inner ends of the two pressing rods through screws. When it is necessary to position and install the wiring terminals inserted through, directly press the two pressing rods to drive the two pressing plates to squeeze and clamp the upper and lower sides of the wiring terminals, so that the inserted-through wiring terminals can be clamped and positioned. While pressing the two pressing rods, the compression springs will sequentially pop out the limit blocks into a row of limit slots through their own elastic forces, and then the two pressed pressing rods can be slidably limited to prevent the two pressing rods from being misaligned and offset during later work and use, improving the use stability of the copper wire soft connection;

[0021] (2) Further, by using a rotating shaft that is rotatably installed through a slot in the limit block through a second torsion spring, when it is necessary to disassemble, repair, and replace the wiring terminals and the two pressing plates later, only need to manually rotate the rotating shaft to drive the limit block to separate from the limit slot, and then the wiring terminals can be taken out to facilitate the quick repair and replacement operation later, which is more time-saving and labor-saving and reduces the operation difficulty;

[0022] (3) By using heat dissipation pads that are adhesively connected to the upper and lower side surfaces of the wiring terminals on the inner sides of the two pressing plates, the heat generated during the use of the wiring terminals can be dissipated through the two heat dissipation pads, and then the wiring terminals can be quickly dissipated through two layers of heat dissipation holes opened inside the two pressing plates;

[0023] (4) By arranging racks on the outer sides of the two pressing plates, and then meshing and connecting a transmission gear on the outer sides of the two racks. When pressing the two pressing plates, the two transmission gears can be driven to rotate. At this time, the ropes wound around the output ends of the two transmission gears will be loosened through the elastic force of the first torsion spring itself, and then the heat dissipation fins arranged at the inner end of the movable seat will be adhesively connected to the outer side wall of the wiring terminal through the reset spring, and then the heat generated during its use can be discharged to the outside of the copper joint through the heat dissipation mesh plate, improving the heat dissipation efficiency of the copper wire soft connection;

[0024] (5) By connecting protective plates on both the front and rear sides inside the copper joint through two damping rods, and then corresponding to the front and rear ends of the wiring terminals on the inner sides of the two protective plates, the overall seismic shock absorption performance of the copper joint can be increased through the two damping rods, avoiding the phenomenon that the copper joint is deformed and damaged due to external extrusion and collision, and improving the service life of the copper wire soft connection. Description of the Drawings

[0025] Figure 1 Schematic three-dimensional structure diagram of the present invention;

[0026] Figure 2 Schematic side three-dimensional structure diagram of the copper wire body and the copper joint of the present invention;

[0027] Figure 3 Schematic top view structure diagram of the wire body and the copper joint of the present invention;

[0028] Figure 4 Schematic partial three-dimensional structure diagram of the copper joint of the present invention;

[0029] Figure 5 Schematic partial three-dimensional structure diagram of the copper joint and the wiring terminal of the present invention;

[0030] Figure 6 Of the present invention Figure 5 Enlarged structure diagram at A in;

[0031] Figure 7 Schematic partial three-dimensional structure diagram of the pressure plate and the heat dissipation pad of the present invention;

[0032] Figure 8 Schematic partial bottom three-dimensional structure diagram of the pressure plate and the heat dissipation pad of the present invention;

[0033] Figure 9 Of the present invention Figure 5 Enlarged structure diagram at B in;

[0034] Figure 10 Schematic partial top cross-sectional structure diagram of the copper joint and the protective plate of the present invention.

[0035] In the figure: 1. Copper wire body; 2. Copper joint; 3. Installation hole groove; 4. Insulating coating; 5. Heat dissipation mesh plate; 6. Pressing rod; 7. Wiring terminal; 8. Pressure plate; 9. Heat dissipation pad; 10. Transmission gear; 11. First torsion spring; 12. Pulling rope; 13. Rack; 14. Limiting block; 15. Limiting groove; 16. Extrusion spring; 17. Rotating shaft; 18. Second torsion spring; 19. Heat dissipation hole; 20. Moving seat; 21. Return spring; 22. Heat dissipation fin; 23. Protective plate; 24. Damping rod; 25. Extrusion rod; 26. Moving block; 27. Tensile spring. Detailed Embodiment

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] The present invention provides the following technical solutions:

[0038] Embodiment 1 discloses, in order to solve the problem that the disassembly, inspection and replacement operations of the existing wiring terminal 7 are difficult:

[0039] A row of copper wire bodies 1, wherein wiring terminals 7 are clamped and installed at both ends of the row of copper wire bodies 1, and the structures of the two wiring terminals 7 are the same, and the two wiring terminals 7 both penetrate and extend into the interiors of the two copper joints 2;

[0040] It further includes: the volume of the copper joint 2 is larger than that of the wiring terminal 7, and installation hole grooves 3 are provided in the interiors of the two copper joints 2, and the two copper joints 2 can be positioned and installed through the two installation hole grooves 3. An insulating coating 4 is coated on the surface of the row of copper wire bodies 1, wherein the insulating coating 4 is made of polyvinylidene fluoride PVDF material. Heat dissipation mesh plates 5 are provided with grooves on the outer sides of the two copper joints 2;

[0041] Pressing rods 6 are slidably installed in grooves penetrating through the upper and lower sides inside the two copper joints 2, and every two pressing rods 6 are symmetrically arranged about the horizontal center line of the copper joint 2, and the inner ends of each pressing rod 6 all penetrate and extend to both ends inside the copper joint 2. The inner ends of the two pressing rods 6 are both installed with pressing plates 8 by screws, and the inner sides of the two pressing plates 8 are both clamped and connected to the upper and lower side surfaces of the wiring terminal 7, and the outer ends of the wiring terminal 7 correspond to the heat dissipation mesh plates 5.

[0042] For the copper joint 2, limit blocks 14 are rotatably installed in grooves at the upper and lower ends inside it through compression springs 16, and rows of limit grooves 15 are connected to the outer sides of the two limit blocks 14, and the two rows of limit grooves 15 are equally spaced on the outer side walls of the two pressing rods 6. For the limit block 14, a second torsion spring 18 is provided in a groove inside it, and the inner side of the second torsion spring 18 is wound and connected to a rotating shaft 17, and the outer end of the rotating shaft 17 penetrates and extends to the outside of the copper joint 2.

[0043] As Figures 1 - 6As shown in the figure, after inserting the copper wire body 1 into the inside of the copper joint 2 at the terminal 7, press the two pressing rods 6 to drive the pressing plate 8 to contract and move, and then the two pressing plates 8 can be driven to clamp and position the inserted terminal 7. While pressing the two pressing rods 6 to contract, the two extrusion springs 16 will sequentially eject the two limiting blocks 14 into a row of limiting grooves 15 through their own elastic force, and then the two pressing rods 6 that are pressed and contracted can be slidably limited to avoid the phenomenon of sliding misalignment of the terminal 7 during later use. When the terminal 7 is severely worn after long-term use, it needs to be disassembled, repaired and replaced. At this time, manually rotate the rotating shaft 17 to separate the limiting block 14 from the limiting groove 15, and then the terminal 7 can be pulled out and reset, so as to facilitate later maintenance, repair and replacement, with better practicability and more time-saving and labor-saving operation.

[0044] Embodiment 2, different from Embodiment 1, while the terminal 7 is in use, the heat generated during the use of the terminal 7 can be dissipated and discharged, and it is disclosed that:

[0045] Heat dissipation pads 9 are respectively and fittingly connected to the outer sides of the two pressing plates 8, and the two heat dissipation pads 9 are both made of fiber materials, and the inner sides of the two heat dissipation pads 9 are respectively and fittingly connected to the upper and lower side surfaces of the terminal 7. A layer of heat dissipation holes 19 are respectively opened in the two pressing plates 8, and the apertures of the two layers of heat dissipation holes 19 are the same, and the inner sides of the two layers of heat dissipation holes 19 respectively correspond to the upper and lower side surfaces of the terminal 7.

[0046] Racks 13 are respectively arranged on the outer sides of the two pressing rods 6, and transmission gears 10 are respectively and meshingly connected to the outer sides of the two racks 13. At the same time, ropes 12 are respectively wound around the output ends of the two transmission gears 10, and the outer ends of the two ropes 12 are respectively connected to a moving seat 20 through guide wheels. The moving seat 20 is slidably installed inside the copper joint 2 through a return spring 21. A heat dissipation fin 22 is arranged at the outer end of the moving seat 20, and the outer side of the heat dissipation fin 22 is fittingly connected to the outer side wall of the terminal 7. Ropes 12 are respectively wound around the output ends of the two transmission gears 10, and the two first torsion springs 11 are respectively wound around the output ends of the two transmission gears 10. The two first torsion springs 11 have the same structure, and the outer ends of the two first torsion springs 11 are respectively connected to the inner wall of the copper joint 2.

[0047] As Figures 1 - 9 shown, after the two pressing plates 8 clamp and position the upper and lower sides of the terminal 7, the heat dissipation pads 9 arranged on the inner sides of the two pressing plates 8 will dissipate the heat generated during the use of the terminal 7 through a layer of heat dissipation holes 19, so as to avoid heat accumulation inside the copper joint 2 and affect the stable use of the later copper wire soft connection;

[0048] While pressing the two pressing rods 6 for contraction movement, the two first torsion springs 11 will rebound. At this time, the two pull ropes 12 will become loose. Subsequently, the return spring 21 will automatically pop out a row of heat sinks 22 provided at the inner end of the moving seat 20 by its own elastic force to fit against the outer wall of the terminal 7. Subsequently, the heat generated by the use of the terminal 7 can be discharged to the outside of the copper joint 2 through a row of heat sinks 22, improving the heat dissipation efficiency of the copper wire soft connection.

[0049] Embodiment 3, which is different from Embodiment 2, can buffer and protect the used copper joint 2, improving the service life of the copper joint 2, and discloses:

[0050] For the copper joint 2, two damping rods 24 are symmetrically arranged at both the front and rear ends inside it, and a protective plate 23 is connected to the inner ends of every two damping rods 24. And on the inner sides of the two protective plates 23, terminals 7 are correspondingly arranged. For the copper joint 2, at both the front and rear ends inside it, extrusion rods 25 are installed through movable shafts, and the four extrusion rods 25 are all inclined. And the outer ends of the four extrusion rods 25 are all connected to a moving block 26 through movable shafts. Every two moving blocks 26 are slidably installed on the outer sides of the two protective plates 23 through tension springs 27.

[0051] As Figures 1 - 10 shown, when the copper joint 2 is squeezed and collided due to external unstable factors, the two damping rods 24 will increase the anti-seismic and buffering performance between the copper joint 2 and the terminal 7 through their own characteristics, avoiding the phenomenon that the terminal 7 is deformed and damaged due to squeezing and collision, and improving the service life of the copper wire soft connection. While squeezing the copper joint 2, both sides of the inner wall of the copper joint 2 will simultaneously drive the extrusion rods 25 to squeeze the two moving blocks 26 to move on the outer sides of the two protective plates 23 through movable shafts. At this time, the two tension springs 27 will perform elastic reset on the two squeezed and moved moving blocks 26, and then the two protective plates 23 can be reset for use, with stronger practicability, thus completing a series of operations.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fire-resistant and flame-retardant copper wire flexible connection, comprising a row of copper wire bodies (1), wherein both ends of the row of copper wire bodies (1) are clamped and mounted with connection terminals (7), and the two connection terminals (7) have the same structure, and the two connection terminals (7) extend through and into the interior of two copper joints (2); It is characterized in that Also includes: The volume of the copper joint (2) is larger than the volume of the wiring terminal (7), and mounting holes (3) are provided inside the two copper joints (2), so that the two copper joints (2) can be positioned and installed through the two mounting holes (3); The surface of a row of copper wire bodies (1) is coated with a layer of insulating coating (4), wherein the insulating coating (4) is made of polyvinylidene fluoride (PVDF) material, and the outer sides of the two copper joints (2) are grooved and provided with heat dissipation mesh plates (5); The upper and lower sides of the two copper joints (2) are both grooved and penetrated by a pressing rod (6) for sliding installation, and each of the two pressing rods (6) is symmetrically arranged about the transverse center line of the copper joint (2), and the inner end of each pressing rod (6) penetrates and extends to the two ends of the inside of the copper joint (2); The inner ends of the two pressing rods (6) are both mounted with pressing plates (8) by means of screws, and the inner sides of the two pressing plates (8) are clamped and connected to the upper and lower side surfaces of the wiring terminal (7), and the outer ends of the wiring terminal (7) are correspondingly provided with heat dissipation mesh plates (5); The copper joint (2) has grooves at both the upper and lower ends thereof, and a limit block (14) is rotatably installed through an extrusion spring (16), and the outer sides of the two limit blocks (14) are connected to a row of limit grooves (15), and the two rows of limit grooves (15) are evenly spaced and arranged on the outer side walls of the two pressing rods (6); The outer sides of the two pressing rods (6) are both provided with racks (13), and the outer sides of the two racks (13) are both meshedly connected with the transmission gears (10), and the output ends of the two transmission gears (10) are both wound with pull ropes (12), and the outer ends of the two pull ropes (12) are both connected with the moving seat (20) through guide wheels, wherein the moving seat (20) is slidably installed inside the copper joint (2) through a return spring (21), and the outer end of the moving seat (20) is provided with a heat sink (22), and the outer side of the heat sink (22) is fitted and connected to the outer side wall of the terminal (7); The output ends of the two transmission gears (10) are both wound and connected with a first torsion spring (11), the two first torsion springs (11) have the same structure, and the outer ends of the two first torsion springs (11) are both connected to the inner wall of the copper joint (2).

2. The fire-retardant copper wire flexible connector according to claim 1, characterized in that: The limiting block (14) has a second torsion spring (18) disposed in a groove therein, and a rotating shaft (17) is wound around the inner side of the second torsion spring (18), and the outer end of the rotating shaft (17) extends through and extends to the outer side of the copper joint (2).

3. The fire-retardant copper wire flexible connector according to claim 1, characterized in that: The outer sides of the two pressing plates (8) are both fitted and connected with heat dissipation pads (9), and the two heat dissipation pads (9) are both made of fiber material, and the inner sides of the two heat dissipation pads (9) are both fitted and connected to the upper and lower side surfaces of the connection terminal (7).

4. The fire-retardant copper wire flexible connector according to claim 3, characterized in that: A layer of heat dissipation holes (19) is provided inside each of the two pressing plates (8), and the apertures of the two layers of heat dissipation holes (19) are the same, and the inner sides of the two layers of heat dissipation holes (19) correspond to the upper and lower side surfaces of the connection terminal (7).

5. The fire-retardant copper wire flexible connector according to claim 1, characterized in that: The copper joint (2) has two damping rods (24) symmetrically arranged at both the front and rear ends thereof, and the inner ends of each of the two damping rods (24) are connected to a protective plate (23), and the inner sides of the two protective plates (23) are correspondingly provided with connection terminals (7).

6. The fire-retardant copper wire flexible connector according to claim 5, characterized in that: The copper joint (2) has extrusion rods (25) installed at both the front and rear ends thereof through movable shafts, and the four extrusion rods (25) are all in an inclined shape, and the outer ends of the four extrusion rods (25) are connected to moving blocks (26) through movable shafts, and every two moving blocks (26) are slidably installed on the outer side surfaces of the two protective plates (23) through tension springs (27).

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