Wire fixing structure

Abstract

The application relates to the technical field of electric wire fixing, and discloses an electric wire fixing structure, which comprises a separator and a cutting piece, the separator comprises a lower shell and an upper shell, the upper shell is connected to the lower shell, a plurality of separation cavities are formed between the lower shell and the upper shell, the separation cavities are used for separating a plurality of thin electric wires, the cutting piece comprises a connecting part, a moving part, a second elastic part, a cutter and a guide sleeve, the moving part is connected to the lower shell through the second elastic part, the moving part, the second elastic part, the cutter and the guide sleeve are all provided with two, the two ends of the connecting part are connected to the two moving parts, the guide sleeve is connected in the upper shell, the connecting part penetrates through the two guide sleeves, the guide sleeves are used for guiding the two ends of the connecting part, the moving part is locked by the connecting part, the second elastic part is in a compressed state, the cutter is connected to the moving part, and the cutter is located below the thin electric wire; the electric wire fixing structure can prevent the spread of fire and avoid igniting the surrounding thin electric wires.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric wire fixing, in particular to an electric wire fixing structure. BACKGROUND

[0002] The power distribution cabinet is the general term of the motor control center, and the power distribution cabinet is mainly divided into power distribution cabinet and lighting distribution cabinet, metering cabinet, which is the last stage device of the power distribution system, and the power distribution cabinet is mainly used in the occasion with relatively dispersed load and less return circuit, which distributes the electric energy of a circuit of the upper level power distribution device to the nearby load, and the power distribution cabinet is mainly used for emergency power supply place in use, when a power supply place is powered off, the power distribution cabinet needs to be moved to the place for power supply work, and the power distribution cabinet is mostly connected with many electric wires in the assembly, which is used for controlling different circuits, and the electric wire with appropriate thickness is used according to the specific situation when the power is connected.

[0003] The Chinese patent document with publication number CN112688190B discloses a power distribution cabinet structure convenient for emergency power supply, which comprises a power distribution cabinet box body, a plurality of inclined downward heat dissipation holes are formed in the inner walls of the two sides of the power distribution cabinet box body, four walking wheels are rotatably installed on the bottom of the power distribution cabinet box body, first grooves with open front sides are formed in the inner walls of the two sides of the power distribution cabinet box body, first positioning rods are fixedly installed on the bottom inner walls of the first grooves, moving blocks are slidably sleeved on the first positioning rods, a T-shaped quick fixing bolt is movably contacted with the top of the moving block on the left side of the two moving blocks, the left side of the T-shaped quick fixing bolt extends to the left side of the power distribution cabinet box body, the first positioning rod on the left side of the two first positioning rods is threadedly sleeved on the T-shaped quick fixing bolt, and a wire arranging mechanism is arranged in the power distribution cabinet box body.

[0004] In use, the ring is pulled forward, and the ring slides forward on the two T-shaped positioning rods, the ring pulls the two flexible steel ropes to slide on the rear side of the corresponding fixed pulley, the flexible steel rope pulls the corresponding clamping rod to slide in the positioning pipe to the direction close to the screw rod, the clamping rod is compressed and gradually removed from the clamping groove while moving, thereby releasing the fixing of the second fixed plate, when the ring moves to the rear side of the mounting block, continue to pull the ring forward, the ring drives the second fixed plate to move forward through the mounting block, the second bearing, the screw rod and the first bearing in turn, the second fixed plate is removed from the two second positioning rods, then the electric wire or cable is placed in the corresponding first half circular wire releasing hole in turn, then the sliding hole is aligned with the corresponding second positioning rod, the second fixed plate is moved backward, the second fixed plate is sleeved on the two second positioning rods while moving backward, when the rear side of the second fixed plate contacts the front side of the first fixed plate, the clamping rod is aligned with the corresponding clamping groove at this time, the pulling force of the ring is released, the second spring in the compressed state is reset, the elastic force of the second spring drives the corresponding clamping rod to move away from the screw rod, the clamping rod is gradually moved into the corresponding clamping groove, the clamping rod is clamped with the corresponding clamping groove, thereby fixing the second fixed plate, and the electric wire or cable is located in the corresponding circular wire releasing hole.

[0005] However, the above patent document still has the following deficiencies: the heat generated by the current passing through the thin electric wire will cause the temperature of the electric wire to rise, thereby accelerating the aging and damage of the insulation layer, and the thin electric wires connected between two electric devices in the power distribution cabinet are usually large in number and concentrated, once one of the thin electric wires appears short circuit and fire due to aging or damage of the insulation layer, it is easy to ignite the surrounding thin electric wires. SUMMARY

[0006] The present application provides a kind of electric wire fixing structure, to solve the problem of one of the thin electric wires in related technology appears short circuit and fire due to aging or damage of the insulation layer, it is easy to ignite the surrounding thin electric wires.

[0007] The electric wire fixing structure of the present application comprises a separator and a cutting part, the separator comprises a lower shell and an upper shell, the upper shell is connected to the lower shell, a plurality of separation cavities are formed between the lower shell and the upper shell for separating a plurality of thin electric wires, the cutting part is provided in plurality, and the plurality of cutting parts are connected in the plurality of separation cavities respectively, the cutting part comprises a connecting part, a moving part, an elastic part two, a cutter and a guide sleeve, the moving part is connected to the lower shell through the elastic part two, the moving part, the elastic part two, the cutter and the guide sleeve are all provided in two, the two ends of the connecting part are connected to the two moving parts respectively, the guide sleeve is connected in the upper shell, the connecting part penetrates through the two guide sleeves, the guide sleeve is used for guiding the two ends of the connecting part, and the moving part is locked by the connecting part, and the elastic part two is in a compressed state, the cutter is connected to the moving part, and the cutter is below the thin electric wire.

[0008] The effect is that after the lower shell is installed in the power distribution cabinet, the workers manually dial the plurality of thin electric wires to make the plurality of thin electric wires all penetrate the upper shell, and then the upper shell is installed on the lower shell, at this time, the upper shell and the lower shell form a plurality of separated cavities, and the plurality of thin electric wires are respectively located in the plurality of separated cavities, the plurality of thin electric wires are separated by the plurality of separated cavities, when a certain thin electric wire catches fire due to aging or damage of the insulation layer, the flame generated can melt the connecting part, thereby releasing the locking of the two moving parts, at this time, the elastic part two that is compressed can push the moving part and the cutter to move towards the direction close to the thin electric wire, and cut off the thin electric wire that catches fire, thereby preventing the spread of fire, so as to avoid igniting the surrounding thin electric wires.

[0009] Preferably, the cutting member further comprises a movable part and a fixed part, the movable part is connected to the moving part, and the fixed part is threadedly connected to the movable part, and the connecting part is connected to the movable part through the fixed part.

[0010] The effect is that the connecting part is fixed to the movable part through the fixed part, so as to facilitate disassembly or replacement of the connecting part.

[0011] Preferably, the cutting member further comprises a movable part and a fixed part, the movable part is connected to the moving part, and the fixed part is threadedly connected to the movable part, and the connecting part is connected to the movable part through the fixed part.

[0012] Preferably, the cutting member further comprises a movable part and a fixed part, the movable part is connected to the moving part, and the fixed part is threadedly connected to the movable part, and the connecting part is connected to the movable part through the fixed part.

[0013] The effect is that the flame high temperature generated by the thin electric wire catching fire can open the air outlet structure close to the thin electric wire catching fire part, at this time, the elastic part exerts a downward pushing force on the lower pressing part, so that the carbon dioxide gas in the gas bag blows to the thin electric wire catching fire part through the opened air outlet structure, the oxygen around the thin electric wire catching fire part is blown away by the carbon dioxide gas, so that the thin electric wire catching fire part is extinguished due to lack of oxygen, thereby achieving the purpose of extinguishing the thin electric wire catching fire part.

[0014] Preferably, the air outlet structure comprises an air outlet pipe, a plugging part and an adhesive part, the air outlet pipe is connected to the bottom of the gas bag, the adhesive part is coated on the outside of the plugging part, and the plugging part is adhered in the air outlet pipe through the adhesive part.

[0015] The effect is that the flame high temperature generated by the thin electric wire catching fire can melt the adhesive part, at this time, the gas pressure in the gas bag can blow the plugging part out of the air outlet pipe, thereby opening the air outlet pipe.

[0016] Preferably, the elastic extension part comprises a sleeve rod, an insertion rod and a compression spring, the sleeve rod is connected to the mounting shell, the insertion rod is inserted into the sleeve rod, the lower pressing part is connected to the insertion rod, and the compression spring is connected between the sleeve rod and the insertion rod.

[0017] Preferably, the cutting part further comprises a supporting part, the supporting part is connected in the lower shell, and the supporting part is located in the separated cavity, the inner side of the supporting part is provided with a mounting groove, and the connecting part is inserted into the mounting groove.

[0018] The supporting part can support the connecting part, so that the connecting part is attached to the thin electric wire, and the connecting part can be quickly fused when the thin electric wire is on fire due to aging or damage of the insulation layer.

[0019] Preferably, the bottom of the air bag is connected with an inflation head, and the inflation head is provided with a one-way air inlet valve.

[0020] The inflation head can be connected with the external carbon dioxide gas supply equipment, the carbon dioxide gas is transported into the air bag through the inflation head by the external carbon dioxide gas supply equipment, the lower pressing part is pushed upward, the insertion rod moves towards the direction of extending into the sleeve rod, and the compression spring is extruded to be in a force storage state, and the one-way air inlet valve can prevent the carbon dioxide gas in the air bag from being discharged outward through the inflation head.

[0021] Preferably, the air bag is made of fireproof material.

[0022] The air bag made of fireproof material can avoid the air bag being ignited when the thin electric wire is on fire due to aging or damage of the insulation layer.

[0023] Preferably, the lower shell and the upper shell are connected with a connecting structure for fixing the upper shell on the lower shell.

[0024] The present application has the following advantages:

[0025] 1. The lower shell and the upper shell are connected to form a plurality of separated cavities, a plurality of thin electric wires are separated by the plurality of separated cavities, and when a certain thin electric wire is on fire due to aging or damage of the insulation layer, the generated flame can fuse the connecting part, so as to release the locking of the two moving parts, at this time, the moving parts and the cutter can be moved by the compressed elastic part II, and the thin electric wire on fire can be cut off, thereby preventing the spread of fire and avoiding igniting the surrounding thin electric wires.

[0026] 2. The flame generated by the fire of the thin electric wire can melt the adhesive part on the air outlet structure near the fire part of the thin electric wire, at this time, the elastic extension part applies downward thrust to the downward part, the gas pressure of the carbon dioxide gas in the air bag increases, so that the carbon dioxide gas in the air bag blows the blocking part out of the air outlet pipe, thereby opening the air outlet pipe, and the carbon dioxide gas blows from the opened air outlet pipe to the fire part of the thin electric wire, the oxygen around the fire part of the thin electric wire is blown away by the carbon dioxide gas, so that the fire part of the thin electric wire is extinguished due to lack of oxygen, thereby achieving the purpose of extinguishing the fire part of the thin electric wire. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of the present application.

[0028] Figure 2 is a schematic diagram of the planar structure of the present application.

[0029] Figure 3 is a schematic diagram of the cross-sectional structure of the present application.

[0030] Figure 4 is a schematic diagram of the cross-sectional structure of the connection structure of the present application.

[0031] Figure 5 is a schematic diagram of the connection structure of the present application. Figure 3 is an enlarged schematic diagram of the structure at A in the above.

[0032] Figure 6 is a schematic diagram of the cross-sectional structure of the fire extinguishing part of the present application.

[0033] Figure 7 is a schematic diagram of the planar structure of the support part and the connection part of the present application.

[0034] Figure 8 is a schematic diagram of the cross-sectional structure of the air outlet structure of the present application.

[0035] REFERENCE NUMERALS:

[0036] 1, partition; 11, lower shell; 111, ventilation opening; 12, upper shell; 13, connection structure; 131, plug-in part; 132, mounting seat; 133, mounting cavity; 134, locking groove; 135, locking tongue; 136, inclined surface; 137, elastic part one; 14, partition cavity; 15, leg; 16, clamping part one; 17, clamping part two; 2, cutting part; 21, support part; 211, mounting groove; 212, air guide groove; 22, connection part; 23, moving part; 24, elastic part two; 25, cutter; 26, guide sleeve; 27, movable part; 28, fixed part; 3, fire extinguishing part; 31, mounting shell; 32, air bag; 33, elastic extension part; 34, downward part; 35, air outlet structure; 351, air outlet pipe; 352, blocking part; 353, adhesive part; 4, thin electric wire. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] like Figures 1 to 8 As shown, the wire fixing structure of the present invention includes a separator 1, a cutting piece 2 and a fire extinguishing piece 3. The separator 1 can separate and fix multiple thin wires 4 so that when one of the thin wires 4 catches fire due to aging or damage of the insulation layer, it will not ignite the surrounding wires. The cutting piece 2 is provided in plurality, and the multiple cutting pieces 2 are all connected in the separator 1. The multiple cutting pieces 2 are provided in a one-to-one correspondence with the multiple thin wires 4. When one of the thin wires 4 catches fire, the thin wire 4 can be cut off by the cutting piece 2 corresponding to the thin wire 4, thereby preventing the spread of the fire, avoiding ignition of other surrounding thin wires 4, and reducing losses. The fire extinguishing piece 3 is provided in plurality, and the multiple fire extinguishing pieces 3 are all connected in the separator 1. The multiple fire extinguishing pieces 3 are provided in a one-to-one correspondence with the multiple thin wires 4. When one of the thin wires 4 catches fire, the thin wire 4 can be extinguished by the fire extinguishing piece 3 corresponding to the thin wire 4, further preventing the spread of the fire.

[0039] When installing multiple thin wires 4, the multiple thin wires 4 are separated and fixed by the separator 1. When one of the thin wires 4 catches fire due to aging or damage of the insulation layer, the generated flame can trigger the cutting piece 2 corresponding to the thin wire 4, so that the cutting piece 2 cuts off the burning thin wire 4, and at the same time triggers the fire extinguishing piece 3 corresponding to the thin wire 4. The fire extinguishing piece 3 extinguishes the fire part of the thin wire 4, thereby preventing the spread of fire, avoiding ignition of other thin wires 4 around, and reducing losses.

[0040] like Figures 1 to 4As shown, the partition 1 comprises a lower shell 11, an upper shell 12, a connecting structure 13, a supporting leg 15 and a clamping structure, the upper shell 12 is mounted on the top of the lower shell 11, a plurality of partition cavities 14 are arranged between the lower shell 11 and the upper shell 12, for partitioning a plurality of thin electric wires 4, so as to partition the thin electric wire 4 when the thin electric wire 4 catches fire due to aging or damage of the insulation layer, so as to avoid the thin electric wire 4 catching fire igniting other thin electric wires 4, reducing the loss, a plurality of ventilation openings 111 are arranged on the lower shell 11, so that the plurality of partition cavities 14 are in communication with the outside, so as to ventilate the partition cavities 14, thereby dissipating heat of the thin electric wires 4 in the partition cavities 14, the connecting structure 13 is connected between the lower shell 11 and the upper shell 12, for connecting the lower shell 11 and the upper shell 12 together, the clamping structure is arranged in multiple groups, two groups of clamping structures are connected in each partition cavity 14, for clamping and fixing two ends of the thin electric wire 4 located in the partition cavity 14 respectively, the clamping structure comprises a clamping part one 16 and a clamping part two 17, the clamping part one 16 is connected in the upper shell 12, the clamping part two 17 is connected in the lower shell 11, after the upper shell 12 is fixed with the lower shell 11 through the connecting structure 13, the thin electric wire 4 is fixed through the clamping part one 16 and the clamping part two 17 on the clamping structure;

[0041] With reference to the above Figures 1 to 4 As shown, the connecting structure 13 comprises a plug-in part 131, a mounting seat 132, a lock tongue 135 and an elastic part one 137, the plug-in part 131 is connected on the upper shell 12, the mounting seat 132 is connected on the lower shell 11, the mounting seat 132 is provided with a mounting cavity 133, the bottom of the plug-in part 131 is plugged in the mounting cavity 133, the plug-in part 131 is provided with a locking groove 134, the lock tongue 135 is plugged in the mounting cavity 133, and the end of the lock tongue 135 away from the lower shell 11 penetrates through the mounting seat 132, the lock tongue 135 is plugged with the locking groove 134, the lock tongue 135 is provided with an inclined surface 136, the elastic part one 137 is a compression spring, the elastic part one 137 is connected between the lock tongue 135 and the inner wall of the mounting cavity 133, for driving the lock tongue 135 to reset.

[0042] In the process of separating the plurality of thin electric wires 4, the lower shell 11 is first fixed in the switch cabinet, and the plurality of thin electric wires 4 are passed through the lower shell 11, then the upper shell 12 is moved to the top of the lower shell 11 and pressed down, so that the plug-in part 131 is inserted into the mounting cavity 133 on the mounting seat 132, in the process, the plug-in part 131 is in contact with the inclined surface 136 of the locking tongue 135, and the inclined surface 136 of the locking tongue 135 is pushed by the plug-in part 131, so that the locking tongue 135 moves towards the direction close to the lower shell 11, until the inclined surface 136 of the locking tongue 135 is separated from the plug-in part 131, and the elastic part one 137 is compressed, after the locking tongue 135 is aligned with the locking groove 134 on the plug-in part 131, the locking tongue 135 is pushed by the elastic part one 137, so that the locking tongue 135 moves away from the lower shell 11, and the locking tongue 135 is inserted into the locking groove 134, thereby realizing the fixed connection between the lower shell 11 and the upper shell 12.

[0043] When the upper shell 12 is detached from the lower shell 11, the locking tongue 135 is manually pressed, so that the locking tongue 135 moves towards the direction close to the lower shell 11, until the locking tongue 135 is separated from the locking groove 134, thereby releasing the locking of the plug-in part 131, then the upper shell 12 is removed from the lower shell 11.

[0044] As Figures 2 to 6As shown, the cutting member 2 is provided in multiple, and each of the multiple cutting members 2 is installed in a separate cavity 14. When a fine wire 4 in a certain cavity 14 catches fire due to aging or damage of the insulation layer, the cutting member 2 in the cavity 14 can cut the fine wire 4, thereby preventing the spread of fire and avoiding igniting the surrounding fine wires 4, and reducing losses. The cutting member 2 includes a support portion 21, a connecting portion 22, a guide sleeve 26, a cutting structure, and a fixing structure. The support portion 21 is connected in the lower shell 11 and located in the cavity 14. The support portion 21 is V-shaped, and the fine wire 4 is located on the inner side of the support portion 21. The cutting structure is provided in two, and each of the two cutting structures is connected to the inner side of the cavity 14 at both ends. The support portion 21 is located between the two cutting structures, and the two cutting structures can cut the fine wire 4. The fixing structure is provided in two, and each of the two fixing structures is connected to the two cutting structures. The two ends of the connecting portion 22 are connected to the two cutting structures through the two fixing structures. The connecting portion 22 is made of flexible plastic material. The inner side of the support portion 21 is provided with a mounting groove 211, and the connecting portion 22 is inserted into the mounting groove 211 on the inner side of the support portion 21. The support portion 21 can support the connecting portion 22 to make the connecting portion 22 adhere to the fine wire 4. The two cutting structures are locked by the connecting portion 22. When the fine wire 4 catches fire due to aging or damage of the insulation layer, the flame generated can melt the connecting portion 22 to release the locking of the two cutting structures by the connecting portion 22, so that the two cutting structures cut the fine wire 4. The guide sleeve 26 is provided in two, and each of the two guide sleeves 26 is connected to the inner bottom wall of the upper shell 12. The connecting portion 22 penetrates through the two guide sleeves 26, and the two ends of the connecting portion 22 are guided by the two guide sleeves 26.

[0045] With reference to Figures 2 to 6 As shown, the cutting structure includes a moving portion 23, an elastic portion 24, and a cutter 25. The moving portion 23 is inserted into the lower shell 11 and made of non-conductive ceramic material. The elastic portion 24 is a compression spring and connected between the moving portion 23 and the lower shell 11. The cutter 25 is connected to the top of the moving portion 23. When the cutting structure is locked by the connecting portion 22, the elastic portion 24 is in a compressed state. After the connecting portion 22 is melted, the locking of the cutting structure is released. At this time, the moving portion 23 and the cutter 25 are driven by the elastic portion 24 to move towards the fine wire 4, so that the cutter 25 cuts the fine wire 4 and passes the fine wire 4, and the cutter 25 does not contact the fine wire 4, thereby avoiding the cutter 25 from contacting the fine wire 4 after stopping moving.

[0046] With reference to Figures 2 to 6As shown, the fixing structure includes a movable part 27 connected to the moving part 23 and a fixed part 28 threadedly connected to the movable part 27, and one end of the connecting part 22 is inserted into the movable part 27, and the connecting part 22 can be pressed and fixed to the movable part 27 by the fixed part 28, so as to facilitate the subsequent disassembly and replacement of the connecting part 22, and when the moving part 23 drives the cutter 25 to move upwards and cut the thin electric wire 4, the two ends of the cut thin electric wire 4 can be pressed and fixed to the clamping part 16 by the movable part 27 of the two fixing structures, so as to facilitate the fire extinguishing of the thin electric wire 4 by the fire extinguishing device 3.

[0047] When the thin electric wire 4 is on fire due to aging or damage of the insulating layer, the generated flame will melt the connecting part 22, thereby releasing the locking of the cutting structure, so that the elastic part 24 drives the moving part 23 and the cutter 25 to move towards the direction close to the thin electric wire 4, so that the cutter 25 cuts the thin electric wire 4 and passes over the thin electric wire 4, and the cutter 25 does not contact the thin electric wire 4, and the moving part 23 drives the movable part 27 to move close to the thin electric wire 4, and at this time, the two ends of the cut thin electric wire 4 can be pressed and fixed to the clamping part 16 by the movable part 27 of the two fixing structures, so as to facilitate the fire extinguishing of the thin electric wire 4 by the fire extinguishing device 3.

[0048] The monitoring device is installed on the partition 1, and the monitoring device monitors the thin electric wire 4, and after the thin electric wire 4 is on fire due to aging or damage of the insulating layer, the monitoring device can cut off the power supply main switch or the corresponding line circuit breaker, so as to safely cut off the thin electric wire 4 (the monitoring device is prior art, and will not be described in detail here), and at this time, after the power supply main switch or the corresponding line circuit breaker is cut off, the thin electric wire 4 is no longer conductive, but due to the influence of the insulating layer of the thin electric wire 4, the insulating layer will continue to burn, and at this time, the burning thin electric wire 4 is separated by the partition 1, and the ignition part of the thin electric wire 4 is cut off by the cutting device 2, which can prevent the fire from spreading to other thin electric wires 4 and reduce the loss.

[0049] As Figure 3 , Figure 6 , Figure 7 and Figure 8As shown, the fire extinguishing device 3 is provided in multiple, and each is inserted on the upper shell 12 and located in the separated cavity 14. The fire extinguishing device 3 comprises a mounting shell 31, an air bag 32, an elastic expansion part 33, a pressing part 34 and an air outlet structure 35. The mounting shell 31 is inserted on the upper shell 12 and extends into the separated cavity 14. The bottom of the mounting shell 31 is hollow. The air bag 32 is connected in the mounting shell 31. The elastic expansion part 33 is connected on the inner top wall of the upper shell 12 and located above the air bag 32. The elastic expansion part 33 comprises a sleeve rod, an inserted rod and a compression spring. The sleeve rod is connected on the inner top wall of the upper shell 12. The inserted rod is inserted on the bottom of the sleeve rod. The compression spring is connected between the sleeve rod and the inserted rod. The pressing part 34 is connected on the bottom of the inserted rod and the bottom of the pressing part 34 is in contact with the top of the air bag 32. The air bag 32 is filled with carbon dioxide gas. When the air bag 32 is filled with carbon dioxide, the pressing part 34 is pushed upward to move the inserted rod towards the sleeve rod and compress the compression spring so that the compression spring is in a force storage state. The air outlet structure 35 is provided in multiple and each is connected on the bottom of the air bag 32 and equidistantly arranged. When the insulation layer of the thin electric wire 4 is aged or damaged to cause fire, the air outlet structure 35 near the fire part of the thin electric wire 4 is opened. The pressing part 34 is pushed by the compression spring to compress the air bag 32. The carbon dioxide gas in the air bag 32 is squeezed out. The carbon dioxide gas in the air bag 32 can be blown to the fire part of the thin electric wire 4 through the air outlet structure 35 corresponding to the fire part of the thin electric wire 4. The oxygen around the fire part of the thin electric wire 4 is blown away by the carbon dioxide gas. The fire part of the thin electric wire 4 is extinguished due to lack of oxygen. The purpose of extinguishing the fire of the thin electric wire 4 is achieved. The air bag 32 is made of fireproof material to avoid the thin electric wire 4 igniting the air bag 32 after the insulation layer is aged or damaged. The bottom of the air bag 32 is connected with a gas filling head. The gas filling head is installed with a one-way air inlet valve. When the carbon dioxide gas is delivered into the air bag 32, the gas filling head can be connected with the external carbon dioxide gas delivery equipment. The carbon dioxide gas is delivered into the air bag 32 through the gas filling head by the external carbon dioxide gas delivery equipment. The pressing part 34 is pushed upward to move the inserted rod towards the sleeve rod and compress the compression spring so that the compression spring is in a force storage state. The one-way air inlet valve can prevent the carbon dioxide gas in the air bag 32 from being discharged outward through the gas filling head.

[0050] Continuing to refer to Figure 3 , Figure 6 , Figure 7 and Figure 8As shown, the air outlet structure 35 includes an air outlet pipe 351 connected to the bottom of the air bag 32, a sealing part 352, and an adhesive part 353 coated on the outside of the sealing part 352, and the sealing part 352 is adhered in the air outlet pipe 351 through the adhesive part 353, thereby sealing the air outlet pipe 351. When the fine wire 4 catches fire due to aging or damage of the insulation layer, the air outlet structure 35 near the generated flame is subjected to high temperature, and the adhesive part 353 on the air outlet structure 35 is melted. At this time, the downward pressure is applied to the air bag 32 by the elastic expansion part 33 pushing the downward pressing part 34, so that the air pressure in the air bag 32 is increased. The sealing part 352 is blown out of the air outlet pipe 351 by the air pressure in the air bag 32, so that the air outlet pipe 351 is no longer blocked and sealed by the sealing part 352. The carbon dioxide gas in the air bag 32 can be blown from the air outlet pipe 351 to the fire site of the fine wire 4, so as to blow away the oxygen around the fire site of the fine wire 4, so that the fire site of the fine wire 4 is extinguished due to lack of oxygen. The inside of the supporting part 21 is provided with a plurality of air guide grooves 212 for guiding the carbon dioxide gas to the fire site of the fine wire 4, so as to enhance the fire extinguishing effect on the fine wire 4.

[0051] Before the plurality of fire extinguishing devices 3 are installed on the partition 1, the carbon dioxide gas is delivered into the air bag 32 of the plurality of fire extinguishing devices 3 by the external carbon dioxide gas delivery device, so as to push the downward pressing part 34 upward, move the plug rod toward the direction of extending into the sleeve rod, and press the compression spring, so that the compression spring is in a force storage state. Then, the plurality of fire extinguishing devices 3 are installed on the partition 1. When the fine wire 4 catches fire due to aging or damage of the insulation layer, the air outlet structure 35 near the generated flame is subjected to high temperature, and the adhesive part 353 on the air outlet structure 35 is melted. At this time, the downward pressure is applied to the air bag 32 by the elastic expansion part 33 pushing the downward pressing part 34, so that the air pressure in the air bag 32 is increased. The sealing part 352 is blown out of the air outlet pipe 351 by the air pressure in the air bag 32, so that the air outlet pipe 351 is no longer blocked and sealed by the sealing part 352. The carbon dioxide gas in the air bag 32 can be blown from the air outlet pipe 351 to the fire site of the fine wire 4, so as to blow away the oxygen around the fire site of the fine wire 4, so that the fire site of the fine wire 4 is extinguished due to lack of oxygen.

[0052] Working principle:

[0053] Before the plurality of fire extinguishing devices 3 are installed on the partition 1, the carbon dioxide gas is delivered into the air bag 32 of the plurality of fire extinguishing devices 3 by the external carbon dioxide gas delivery device through the inflation head on the air bag 32, so as to push the downward pressing part 34 upward, move the plug rod toward the direction of extending into the sleeve rod, and press the compression spring, so that the compression spring is in a force storage state. Then, the plurality of fire extinguishing devices 3 are installed on the partition 1.

[0054] The lower shell 11 is fixed in the switch board, and the plurality of thin electric wires 4 are respectively arranged in the plurality of separated cavities 14 in the lower shell 11, then the upper shell 12 is moved to the top of the lower shell 11 and is pressed down, so that the plug-in part 131 is inserted into the installation cavity 133 on the installation base 132, in the process, the plug-in part 131 pushes the inclined surface 136 of the lock tongue 135, so that the lock tongue 135 moves towards the direction close to the lower shell 11 and compresses the elastic part one 137, after the lock tongue 135 is aligned with the locking groove 134 on the plug-in part 131, the lock tongue 135 is inserted into the locking groove 134 under the action of the elastic part one 137, so as to fix the lower shell 11 and the upper shell 12.

[0055] When one of the thin electric wires 4 catches fire due to aging or damage of the insulation layer, the monitoring device cuts off the power supply main switch or the corresponding line circuit breaker, so that the thin electric wire 4 is not electrified, the flame generated on the thin electric wire 4 melts the connecting part 22, at this time, the elastic part two 24 drives the moving part 23 and the cutter 25 to move upwards, so that the cutter 25 cuts off the thin electric wire 4 and passes over the thin electric wire 4, so that the cutter 25 does not contact the thin electric wire 4, when the moving part 23 moves upwards, the movable part 27 moves upwards, through the movable part 27 on the two fixed structures, the two ends of the cut thin electric wire 4 can be pressed and fixed on the clamping part one 16, so as to make the cut thin electric wire 4 stay in the separated cavity 14.

[0056] When the thin electric wire 4 catches fire due to aging or damage of the insulation layer, the air outlet structure 35 close to the generated flame is subjected to high temperature, the bonding part 353 on the air outlet structure 35 is melted, at this time, the elastic expansion part 33 pushes the lower pressing part 34 to apply downward pressure on the air bag 32, so that the air pressure in the air bag 32 increases, through the air pressure in the air bag 32, the blocking part 352 can be blown out of the air outlet pipe 351, so that the air outlet pipe 351 is no longer blocked, the carbon dioxide gas in the air bag 32 can be blown from the air outlet pipe 351 to the fire site of the thin electric wire 4, so as to blow away the oxygen around the fire site of the thin electric wire 4, so that the fire site of the thin electric wire 4 is extinguished due to lack of oxygen.

[0057] When the upper shell 12 is detached from the lower shell 11, the lock tongue 135 is pressed, so that the lock tongue 135 moves towards the direction close to the lower shell 11, so that the lock tongue 135 is separated from the locking groove 134, thereby releasing the locking of the plug-in part 131, then the upper shell 12 is removed from the lower shell 11.

[0058] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An electric wire fixing structure characterized by comprising: The application relates to a wire cutting device, which comprises a separator and a cutting element, the separator comprises a lower shell and an upper shell, the upper shell is connected to the lower shell, a plurality of separation cavities are formed between the lower shell and the upper shell, and the separation cavities are used for separating a plurality of thin electric wires; the cutting element is provided in a plurality of sets, the cutting element comprises a connecting part, a moving part, an elastic part II, a cutter and a guide sleeve, the moving part is connected to the lower shell through the elastic part II, the moving part, the elastic part II, the cutter and the guide sleeve are provided in two sets, the two ends of the connecting part are connected to the two moving parts respectively, the guide sleeve is connected in the upper shell, the connecting part penetrates through the two guide sleeves, the guide sleeve is used for guiding the two ends of the connecting part, the moving part is locked by the connecting part, the elastic part II is in a compressed state, and the cutter is connected to the moving part and located below the thin electric wire. The wire cutting device further comprises a plurality of fire extinguishing elements, the fire extinguishing elements are inserted into the upper shell, and the fire extinguishing elements are located in the separation cavities respectively. The fire extinguishing element comprises a mounting shell, a gas bag, an elastic expansion part, a pressing part and an air outlet structure, the mounting shell is inserted into the separation cavity, the gas bag is connected in the mounting shell, the gas bag is filled with carbon dioxide gas, the elastic expansion part is connected to the mounting shell, the pressing part is connected to the bottom end of the elastic expansion part, the bottom of the pressing part is in contact with the top of the gas bag, the elastic expansion part is in a compressed state, and the air outlet structure is provided in a plurality of sets and connected to the bottom of the gas bag.

2. The electric wire fixing structure according to claim 1, characterized by The cutting element further comprises a movable part and a fixed part, the movable part is connected to the moving part, the fixed part is threadedly connected to the movable part, and the connecting part is connected to the movable part through the fixed part.

3. The electric wire fixing structure according to claim 1, characterized by The air outlet structure comprises an air outlet pipe, a blocking part and a bonding part, the air outlet pipe is connected to the bottom of the gas bag, the bonding part is coated on the outer side of the blocking part, and the blocking part is bonded in the air outlet pipe through the bonding part.

4. The electric wire fixing structure according to claim 1, characterized by The elastic expansion part comprises a sleeve rod, a plug rod and a compression spring, the sleeve rod is connected to the mounting shell, the plug rod is inserted into the sleeve rod, the pressing part is connected to the plug rod, and the compression spring is connected between the sleeve rod and the plug rod.

5. The electric wire fixing structure according to claim 1, characterized by The cutting element further comprises a supporting part, the supporting part is connected in the lower shell and located in the separation cavity, an installation groove is arranged on the inner side of the supporting part, and the connecting part is inserted into the installation groove.

6. The electric wire fixing structure according to claim 1, characterized by The bottom of the gas bag is connected with an inflating head, and a one-way air inlet valve is arranged on the inflating head.

7. The electric wire fixing structure according to claim 1, characterized by The gas bag is made of fireproof material.

8. The electric wire fixing structure according to claim 1, characterized by A connecting structure is arranged between the lower shell and the upper shell, and used for fixing the upper shell to the lower shell.

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