A cable terminal assembly and its assembling method

Abstract

The present invention relates to the technical field of cable terminals, and discloses a cable terminal component and an assembly method thereof, comprising a mounting seat, wherein the interior of the mounting seat is respectively provided with three output terminals and input terminals which are arranged at equal distances, and the input terminals and the output terminals are connected to each other, and a positioning component is provided on the left side of the upper surface of the mounting seat, and the output terminal comprises a connector, and a plurality of connectors are plugged into the outer surface of the connector, and an air supply pipe is provided inside the connector, and the cross section of the air supply pipe is in a "T" shape, and an expansion column for thermal expansion is provided on the bottom surface of the connector; the position of the connector can be adjusted by the mutual cooperation of a sleeve and a first push rod, and when the connector is between an inner tube and the connector to make the connection, the output terminal and the input terminal can be spliced ​​together, thereby achieving the purpose of further fixation, and when the connector completely enters a card slot, the constraints on the output terminal and the input terminal can be released, so that the two can be disconnected to avoid overload.

Description

Technical Field

[0001] The present invention relates to the technical field of cable terminals, and particularly relates to a cable terminal assembly and an assembly method thereof. Background Art

[0002] As the terminal connection device of a cable line, a cable terminal plays important roles such as connecting the cable to electrical equipment and distributing electric energy. An environment-friendly cable refers to a cable using environment-friendly materials as the insulating sleeve, so that it can be degraded when discarded, reducing environmental pollution.

[0003] Chinese Patent with the publication number CN118232237A discloses a cable terminal assembly and a superconducting cable system. The superconducting cable system includes a vacuum pipeline, a cryogenic pipeline and a cable core. The cryogenic pipeline is placed inside the vacuum pipeline, and liquid nitrogen is filled in the cryogenic pipeline. The cable core is placed inside the cryogenic pipeline. The cable terminal assembly includes a first housing, a second housing and a lead-out conductor. The first housing has a first accommodation cavity for communicating with the vacuum pipeline. At least part of the second housing is placed inside the first accommodation cavity, and the second housing is used for communicating with the cryogenic pipeline. The second housing has a second accommodation cavity. At least part of the lead-out conductor is placed inside the second accommodation cavity. One end of the lead-out conductor is used for connecting with the cable core, and the other end is used for connecting with an external electrical component. The lead-out conductor is a heat-conducting component. Although the cable terminal assembly and the superconducting cable system provided in this application can improve the reliability of the cable terminal assembly, they cannot disconnect the circuit when the terminal overheats, resulting in terminal damage.

[0004] Chinese Patent with the publication number CN103166164A discloses an assembly method of a cable terminal, including: annularly coating a first sealant on the outer wall of a support pipe; annularly coating a second sealant on the first sealant; expanding a shrink sleeve and sleeving it on the support pipe. The second sealant is covered by the edge of one end of the shrinkable sleeve. The adhesion between the second sealant and the shrinkable sleeve and the adhesion between the first sealant and the second sealant are both greater than the adhesion between the first sealant and the support pipe. Inserting the already connected cable and terminal joint into the support pipe, and the connection part of the cable and the terminal joint is located inside the support pipe. Then, pulling out the support pipe from the shrinkable sleeve, so that the shrinkable sleeve tightly wraps around the cable and the terminal joint, and the first sealant and the second sealant are clamped between the telescopic sleeve and the terminal joint.

[0005] Based on the above solutions, the process is complex during the assembly of the cable terminal, and problems such as insecure connection are likely to occur, affecting the service life and safety of the cable terminal, and further possibly causing power failures and safety accidents. At the same time, the temperature gradually rises during the transmission of the flow rate, resulting in overheating of the cable terminal, and in severe cases, it may cause a fire. Summary of the Invention

[0006] The object of the present invention is to provide a cable terminal assembly and an assembling method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a cable terminal assembly, comprising a mounting seat, wherein the mounting seat is provided with three output terminals and input terminals arranged at equal distances, and the input terminals and the output terminals are connected to each other, and a positioning assembly is provided on the left side of the upper surface of the mounting seat;

[0008] The output end includes a connector, the outer surface of which is plugged with a plurality of connectors, an air supply pipe is provided inside the connector, and the cross section of the air supply pipe is in a "T" shape, and an expansion column for thermal expansion is provided on the bottom surface of the connector;

[0009] The input end includes a connecting tube, an inner tube and a rubber ring are respectively arranged inside the connecting tube, a plurality of slots are opened on the inner wall of the inner tube, and each of the slots is matched with a connecting piece, a plurality of heat dissipation pipes are opened on the left side of the inner tube, and the other end of each heat dissipation pipe passes through the connecting tube, and a one-way pressure valve is arranged between the left end of the heat dissipation pipe and the rubber ring.

[0010] By adjusting the position of the connector, the purpose of rapid installation, fixation, heat dissipation and disconnection can be achieved, and overheating of the circuit or unstable connection can be avoided. When the connector is between the inner tube and the connector, the output end and the input end can be spliced ​​together, thereby achieving the purpose of further fixation. When the connector and the heat dissipation pipe are connected, excess heat can be quickly discharged to avoid the internal temperature from gradually increasing. When the connector completely enters the slot, the constraints on the output end and the input end can be released, so that the two can be disconnected to avoid overload.

[0011] Preferably, an annular air inlet groove is opened on the right side of the connecting head, the bottom surface of the expansion column is fixedly connected to the inner wall of the air inlet groove, the expansion column includes a sleeve, a first push rod is slidably connected to the inside of the sleeve, and the interior of the sleeve is filled with expansion material.

[0012] Preferably, the positioning assembly comprises a positioning plate, a plurality of grooves are formed on the upper surface of the positioning plate, and the grooves are matched with the output end, and a plurality of positioning rings are installed on the upper surface of the positioning plate.

[0013] Preferably, the left side of the mounting seat is provided with three equally spaced wire inlet grooves, and the inner wall of the wire inlet groove is in contact with the outer surface of the output end, the lower end in contact with the outer surface of the output end is threadedly connected with a nut, and the right side of the upper surface of the mounting seat is provided with a wire inlet box, and the left side of the wire inlet box and the right end of the input end are electrically connected to each other.

[0014] Preferably, a splicing plate is provided on the left side of the connecting cylinder. An extrusion plate is slidably connected inside the splicing plate. A plurality of exhaust grooves are formed on the right side surface of the extrusion plate, and the cross section of each exhaust groove is in an inverted "J" shape.

[0015] Preferably, a pressing plate is slidably connected to the outer surface of the connecting cylinder. A spring is provided between the pressing plate and the splicing plate. A plurality of second push rods are provided on the left side surface of the pressing plate. The other ends of the second push rods penetrate through the outer surface of the splicing plate and extend into the exhaust grooves. A plurality of air inlet holes are provided between the splicing plate and the rubber ring.

[0016] Preferably, a first insulating layer is provided inside the inner tube. A first copper wire is provided inside the first insulating layer. The output end further includes a second insulating layer. The second insulating layer is provided inside the connecting head. A second copper wire is provided inside the second insulating layer, and the first copper wire and the second copper wire are in contact.

[0017] The present invention also provides an assembling method for a cable terminal assembly. The specific operation method steps are as follows:

[0018] S1. Install the output end into the inside of the mounting seat through the wire inlet groove. Constrain the position of the output end through the positioning component. Push the input end to the right to insert the connecting head into the input end, and fix the wire again through the nut, so as to achieve the purpose of preliminary splicing.

[0019] S2. Through the extrusion of the connecting head, the extrusion plate contracts inward, compressing the gas inside the splicing plate. The gas enters the inside of the rubber ring through the air inlet holes, causing it to expand and deform, and applying a certain pressure to the connecting head to make its fixation more firm.

[0020] S3. During use, as the internal temperature gradually rises, the expansion column expands due to heat, causing the connecting piece to gradually rise, and the connecting piece gradually enters the card slot. At this time, the connecting piece is between the connecting head and the inner tube, so as to achieve the purpose of clamping and fixing, avoiding the situation of falling off. When the temperature rises to reach the first threshold, the air supply pipe and the heat dissipation pipe are communicated, so that the temperature can be discharged to achieve the purpose of heat dissipation.

[0021] S4. When the temperature rises to reach the second threshold, at this time, the connecting piece crosses the connecting head and completely enters the inside of the card slot. Part of the heat gradually enters the inside of the rubber ring through the one-way pressure valve, causing the inside of the rubber ring to heat up and expand again. Under the expansion action of the rubber ring, a certain thrust is generated, thereby breaking the expansion column and disconnecting between the input end and the output end to avoid overheating.

[0022] The technical effects of the present invention:

[0023] 1. Through the mutual cooperation of the sleeve and the first push rod, the present invention can adjust the position of the connecting piece. When the connecting piece is between the inner tube and the connecting head, the output end and the input end can be spliced together to achieve the purpose of further fixation. When the connecting piece completely enters the card slot, the restraint on the output end and the input end can be released, enabling the two to disconnect and avoiding overload.

[0024] 2. Through the mutual cooperation of the connecting piece and the heat dissipation tube, the present invention can quickly discharge the excess heat, preventing the internal temperature from rising gradually. When the heat gradually increases, part of the thermal energy causes the rubber ring to further expand through the one-way pressure valve, disconnecting the output end and the input end to avoid generating new heat.

[0025] 3. Through the mutual cooperation of the connecting head and the pressing plate, the present invention can cause the rubber ring to expand, initially fixing the connecting head through the expansion to prevent it from falling off. By changing the position of the connecting piece through heat, further fixation can be achieved to avoid falling off.

[0026] 4. Through the mutual cooperation of the pressing plate and the second push rod, the present invention enables the gas to be discharged through the aperture where the second push rod moves, rapidly reducing the air pressure inside the connecting cylinder and resetting the connecting piece, thereby enabling quick disassembly. Under the action of the exhaust groove, the gas can be sprayed in all directions to blow away the dust on the surface, preventing the dust from falling onto the connection and affecting the next installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall top view structural schematic diagram of the present invention;

[0028] Figure 2 is the front view cross-sectional structural schematic diagram of the mounting seat of the present invention;

[0029] Figure 3 is the cross-sectional structural schematic diagram of the second copper wire of the present invention;

[0030] Figure 4 is the right view cross-sectional structural schematic diagram of the mounting seat of the present invention;

[0031] Figure 5 is the structural schematic diagram of the connecting cylinder of the present invention;

[0032] Figure 6 is the cross-sectional structural schematic diagram of the connecting cylinder of the present invention;

[0033] Figure 7 is the structural schematic diagram of the connecting head of the present invention;

[0034] Figure 8 is the cross-sectional structural schematic diagram of the connecting head of the present invention;

[0035] Figure 9It is a schematic diagram of the cross-sectional structure of the sleeve of the present invention.

[0036] In the figure: 1. mounting base; 2. output end; 201. connector; 202. connector; 203. air supply pipe; 3. input end; 301. connecting tube; 302. inner tube; 303. rubber ring; 304. slot; 305. heat dissipation pipe; 306. air inlet slot; 4. positioning assembly; 401. positioning plate; 402. positioning ring; 5. expansion column; 501. sleeve; 502. first push rod; 6. wire inlet slot; 7. wire inlet box; 8. splicing plate; 9. extrusion plate; 10. exhaust slot; 11. pressing plate; 12. second push rod; 13. air inlet hole; 14. first insulating layer; 15. first copper wire; 16. second insulating layer; 17. second copper wire. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] First embodiment

[0039] like Figures 1 to 9 A cable terminal assembly shown includes a mounting base 1. The bottom surface of the mounting base 1 is provided with a plurality of magnets, which can be adsorbed on the surface of the equipment, so that it is more convenient to fix the whole device. At the same time, the position can be freely adjusted according to the length of the wire to prevent the situation of insufficient distance. The interior of the mounting base 1 is respectively provided with three output terminals 2 and input terminals 3 arranged at equal distances, and the input terminal 3 is connected to the output terminal 2, so that the current can pass through to achieve the purpose of the passage. When it needs to be disconnected, it only needs to disconnect the two ends to achieve power off. A positioning component 4 is provided on the left side of the upper surface of the mounting base 1. The positioning component 4 can play an effective positioning role during installation, so that the output terminal 2 can be installed according to the specified track, making it more convenient to install;

[0040] The positioning assembly 4 includes a positioning plate 401, and a plurality of grooves are provided on the upper surface of the positioning plate 401, and the grooves are adapted to the output terminal 2. The grooves enable the output terminal 2 to be directly clamped inside the grooves to avoid misalignment during installation. A plurality of positioning rings 402 are installed on the upper surface of the positioning plate 401, and the positioning rings 402 and the positioning plate 401 are directly fixed with screws. During the initial installation, the screws can be fixed halfway, which can exert a certain constraint on the output terminal 2, but some minor adjustments can also be made. After the installation is completely completed, the screws are completely fixed to avoid loosening.

[0041] The output terminal 2 includes a connector 201 made of rubber material, which can effectively play an insulating role and avoid electric shock. A number of connectors 202 are inserted on the outer surface of the connector 201. The connectors 202 can be freely adjusted according to the actual situation, so as to achieve the purpose of quick installation and fixation, heat dissipation and disconnection, and avoid overheating or unstable connection of the circuit. An air duct 203 is provided inside the connector 202, and the cross section of the air duct 203 is in a "T" shape, so that heat can be transmitted in two opposite directions. Heat is discharged in the right direction, and heat can be utilized in the left direction to cause the rubber ring 303 to expand excessively and break the splicing part, thereby realizing circuit disconnection and avoiding overheating. An expansion column 5 for thermal expansion is provided on the bottom surface of the connector 202. The expansion column 5 can expand to a certain extent according to temperature changes and drive the upper connector 202 to move, so as to adjust the position of the connector 202 according to the actual temperature. The expansion column 5 and the connector 202 are connected by glue. When the temperature reaches the second threshold, part of the glue melts, making it easier for the expansion column 5 and the connector 202 to disconnect and avoiding jamming;

[0042] An annular air inlet groove 306 is provided on the right side of the connector 201, so that heat can enter the inside of the connector 201 through the air inlet groove 306, increasing the internal temperature thereof, and causing the expansion column 5 to gradually extend outward. The bottom surface of the expansion column 5 is fixedly connected to the inner wall of the air inlet groove 306. The expansion column 5 includes a sleeve 501, and a first push rod 502 is slidably connected inside the sleeve 501. The inside of the sleeve 501 is filled with an expansion material, and the expansion material can be affected by temperature. The greater the temperature, the greater the expansion.

[0043] The input terminal 3 includes a connecting cylinder 301. An inner tube 302 and a rubber ring 303 are respectively provided inside the connecting cylinder 301. The right side of the rubber ring 303 is in close contact with the left side of the inner tube 302. A number of card slots 304 are provided on the inner wall of the inner tube 302, and each card slot 304 is adapted to the connector 202. The card slots 304 are used to engage the connector 202, so that the connector 202 is located between the inner tube 302 and the connector 201, thereby further fixing the position and avoiding falling off. A number of heat dissipation tubes 305 are provided on the left side of the inner tube 302, and the other end of each heat dissipation tube 305 penetrates through the connecting cylinder 301. A one-way pressure valve is provided between the left end of the heat dissipation tube 305 and the rubber ring 303. The heat dissipation tube 305 can effectively export the internal heat and avoid overheating at the circuit connection. The one-way pressure valve can block the heat, so that the heat is preferentially discharged from the right side. When the right side cannot meet the requirement, the pressure gradually increases, causing the one-way pressure valve to open and introducing part of the heat to the left side. The one-way pressure valve only allows gas to move from the right side to the left side.

[0044] On the left side of the mounting base 1, three wire inlet grooves 6 are arranged at equal distances, and the inner wall of the wire inlet groove 6 is in contact with the outer surface of the output end 2, so as to be able to cooperate with the positioning component 4 to completely fix the position of the output end 2, avoiding the position of the output end 2 being changed due to some external factors during subsequent use, causing the output end 2 to bend and affecting current transmission. A nut is threadedly connected to the lower end of the outer surface of the output end 2 in contact. When the nut is completely fixed, further installation and fixation can be achieved. On the right side of the upper surface of the mounting base 1, there is a wire inlet box 7, and the left side of the wire inlet box 7 is electrically connected to the right end of the input end 3. Through the wire inlet box 7, the current can be collected and transmitted into the device.

[0045] On the left side of the connecting cylinder 301, there is a splicing plate 8. Alignment strips are provided on the outer surfaces of the splicing plate 8 and the connecting head 201. Through the alignment strips, the installation position of the connecting head 201 can be aligned to avoid subsequent problems. Magnet rings are provided on the side surfaces of the splicing plate 8 and the connecting head 201 that are close to each other, and the two magnet rings attract each other magnetically, enabling preliminary fixation. A pressing plate 9 is slidably connected to the inside of the splicing plate 8. The left side of the pressing plate 9 penetrates through the splicing plate 8. When the pressing plate 9 is squeezed by the connecting head 201, it can move to the right, compressing the gas inside the splicing plate 8, enabling the gas to enter the rubber ring 303 through the air inlet hole 13, causing it to expand further. A number of exhaust grooves 10 are provided on the right side surface of the pressing plate 9, and the cross-section of each exhaust groove 10 is in an inverted "J" shape. When exhausting, the gas can be sprayed around to blow away the dust on the surface, preventing the dust from falling onto the connection and affecting the next installation.

[0046] A pressing plate 11 is slidably connected to the outer surface of the connecting cylinder 301. A spring is provided between the pressing plate 11 and the splicing plate 8, enabling the position of the pressing plate 11 to be manually adjusted. When the pressing plate 11 is pulled away, the gas can be discharged through the aperture where the second push rod 12 moves, rapidly reducing the air pressure inside the connecting cylinder 301, thereby enabling rapid disassembly. A number of second push rods 12 are provided on the left side surface of the pressing plate 11, and the other ends of the second push rods 12 penetrate through the outer surface of the splicing plate 8 and extend into the exhaust grooves 10. A number of air inlet holes 13 are provided between the splicing plate 8 and the rubber ring 303, and the air inlet holes 13 can serve the purpose of gas transmission. A first insulating layer 14 is provided inside the inner tube 302, and a first copper wire 15 is provided inside the first insulating layer 14. The output end 2 further includes a second insulating layer 16, which is arranged inside the connecting head 201. A second copper wire 17 is provided inside the second insulating layer 16, and the first copper wire 15 and the second copper wire 17 are in contact. Both the first insulating layer 14 and the second insulating layer 16 are made of environmentally friendly rubber materials.

[0047] During actual installation, the output end 2 passes through the wire inlet groove 6 and the positioning component 4 in sequence. By fixing the screw halfway, a certain restraint can be imposed on the output end 2, but some minor adjustments can also be made. The connector 201 of the output end 2 is gradually inserted into the internal connection cylinder 301, making the second copper wire 17 inside gradually approach the first copper wire 15. At this time, the extrusion plate 9 is gradually pushed to move to the right by the connector 201, compressing the gas inside the splicing plate 8, enabling the gas to enter the inside of the rubber ring 303 through the air inlet hole 13, further expanding the rubber ring 303, and fixing the connector 201 again to prevent it from retracting. When the splicing is completed, the two magnet rings can adsorb together, thus playing a certain restraint role. When the installation is completely finished, the screw is fixed completely to prevent loosening.

[0048] During actual use, a certain amount of heat is generated during the current transmission process, and the temperature gradually rises. Part of the heat enters the inside of the connector 201 through the air inlet groove 306, raising the internal temperature, causing the expansion material inside the sleeve 501 to expand when heated. Under the extrusion effect, the expansion column 5 is pushed to drive the connecting piece 202 to gradually move upward, making the connecting piece 202 gradually rise and enter the clamping groove 304. At this time, the connecting piece 202 is located between the connector 201 and the inner tube 302, thus achieving the purpose of clamping and fixing to prevent falling off.

[0049] When the temperature rises to reach the first threshold value, the expansion material inside the sleeve 501 expands again when heated. Under the extrusion effect, the expansion column 5 is pushed to drive the connecting piece 202 to move upward by an increased distance, making the connecting piece 202 rise again, connecting the right end of the air supply pipe 203 and the left end of the heat dissipation pipe 305, enabling the newly generated heat to be continuously discharged through the heat dissipation pipe 305, thereby achieving the purpose of heat dissipation and preventing overheating.

[0050] When the temperature rises again to reach the second threshold value, it indicates that the temperature inside the input end 3 is abnormal, and the circuit needs to be disconnected to prevent circuit damage. Further adjustments are then required as follows:

[0051] The expansion material inside the sleeve 501 expands again when heated. Under the extrusion effect, it pushes the expansion column 5 to drive the connecting piece 202 to move upward by an increased distance again, causing the connecting piece 202 to rise again until it enters the inside of the card slot 304. Since the heat dissipation pipe 305 is not sufficient to dissipate heat at this time, the air pressure inside the heat dissipation pipe 305 increases, opening the one-way pressure valve. Part of the heat gradually enters the inside of the rubber ring 303 through the one-way pressure valve, causing the temperature inside the rubber ring 303 to rise and expand again. Since the connecting piece 202 directly crosses the outer surface of the connector head 201, at this time, the output end 2 and the input end 3 are clamped together through the expansion column 5. Under the expansion effect of the rubber ring 303, a certain thrust is generated, thereby breaking the expansion column 5, disconnecting the input end 3 and the output end 2, and preventing the temperature from rising again and burning out the entire cable terminal.

[0052] When disassembly is required after normal use, manually pull the position of the pressing plate 11 and pull out the pressing plate 11, so that the gas can be discharged from the aperture through which the second push rod 12 can move. Since the gas inside the splicing disc 8 decreases and the air pressure drops, the gas inside the rubber ring 303 enters the inside of the splicing disc 8 through the air inlet hole 13. Correspondingly, due to the decrease in the air pressure inside the rubber ring 303, the one-way valve on the right side is more likely to open, allowing the heat at the connection to be discharged and enter the inside of the rubber ring 303. Since the heat discharged from the connection gradually decreases and the temperature drops, the expansion material inside the expansion column 5 cools and contracts, driving the connecting piece 202 to reset and releasing the limit, enabling the connector head 201 to be pulled out from the inside of the connecting cylinder 301. When there is a gap between the connector head 201 and the splicing disc 8, the pressing plate 9 gradually resets, opening the left end of the exhaust groove 10, allowing part of the gas to be discharged from here. And due to the special shape of the exhaust groove 10, the gas can be sprayed around, blowing away the dust on the surface and preventing the dust from falling on the connection and affecting the next installation.

[0053] Second Embodiment

[0054] This embodiment also provides an assembly method for a cable terminal assembly. The specific operation method steps are as follows:

[0055] S1. Install the output end 2 into the mounting seat 1 through the wire inlet groove 6, constrain the position of the output end 2 through the positioning component 4, push the input end 3 to the right to insert the connector head 201 into the input end 3, and fix the wire again through the nut, thereby achieving the purpose of preliminary splicing.

[0056] S2. The pressing plate 9 contracts inward under the extrusion of the connector head 201, compressing the gas inside the splicing disc 8. The gas enters the inside of the rubber ring 303 through the air inlet hole 13, causing it to expand and deform, and applying a certain pressure to the connector head 201 to make it fixed more firmly.

[0057] S3. During use, the internal temperature gradually rises. The expansion column 5 expands due to heat, causing the connector 202 to gradually rise, and the connector 202 gradually enters the card slot 304. At this time, the connector 202 is located between the connector head 201 and the inner tube 302, thus achieving the purpose of clamping and fixing and preventing detachment. When the temperature rises to reach the first threshold, the air supply pipe 203 and the heat dissipation pipe 305 are connected, so that the temperature can be discharged to achieve the purpose of heat dissipation.

[0058] S4. When the temperature rises to reach the second threshold, at this time, the connector 202 crosses the connector head 201 and completely enters the inside of the card slot 304. Part of the heat gradually enters the inside of the rubber ring 303 through the one-way pressure valve, causing the temperature inside the rubber ring 303 to rise and expand again. Under the expansion effect of the rubber ring 303, a certain thrust is generated, thereby breaking the expansion column 5 and disconnecting between the input end 3 and the output end 2 to avoid overheating.

[0059] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. 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 described in the foregoing embodiments, or perform equivalent replacements for 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 cable terminal assembly, comprising a mounting seat (1), characterized in that: The mounting seat (1) is provided with three output ends (2) and input ends (3) arranged at equal distances, and the input ends (3) are connected to the output ends (2). A positioning component (4) is provided on the left side of the upper surface of the mounting seat (1); The output end (2) comprises a connector (201), a plurality of connectors (202) are plugged into the outer surface of the connector (201), an air supply pipe (203) is provided inside the connector (202), and the cross section of the air supply pipe (203) is in a "T" shape, and an expansion column (5) for thermal expansion is provided on the bottom surface of the connector (202); The input end (3) comprises a connecting tube (301), an inner tube (302) and a rubber ring (303) are respectively arranged inside the connecting tube (301), a plurality of slots (304) are provided on the inner wall of the inner tube (302), and each of the slots (304) is matched with the connecting piece (202), a plurality of heat dissipation tubes (305) are provided on the left side of the inner tube (302), and the other end of each heat dissipation tube (305) passes through the connecting tube (301), and a one-way pressure valve is provided between the left end of the heat dissipation tube (305) and the rubber ring (303).

2. A cable terminal assembly according to claim 1, characterized in that: An annular air inlet groove (306) is provided on the right side of the connector (201), the bottom surface of the expansion column (5) is fixedly connected to the inner wall of the air inlet groove (306), the expansion column (5) comprises a sleeve (501), a first push rod (502) is slidably connected inside the sleeve (501), and the interior of the sleeve (501) is filled with expansion material.

3. A cable terminal assembly according to claim 1, characterized in that: The positioning assembly (4) comprises a positioning plate (401), a plurality of grooves are provided on the upper surface of the positioning plate (401), and the grooves are matched with the output end (2), and a plurality of positioning rings (402) are installed on the upper surface of the positioning plate (401).

4. A cable terminal assembly according to claim 1, characterized in that: The left side surface of the mounting seat (1) is provided with three equidistantly arranged wire inlet grooves (6), and the inner wall of the wire inlet groove (6) is in contact with the outer surface of the output end (2), and the lower end in contact with the outer surface of the output end (2) is threadedly connected with a nut, and the right side of the upper surface of the mounting seat (1) is provided with a wire inlet box (7), and the left side surface of the wire inlet box (7) and the right end of the input end (3) are electrically connected to each other.

5. A cable terminal assembly according to claim 4, characterized in that: A splicing plate (8) is provided on the left side of the connecting tube (301), and an extrusion plate (9) is slidably connected to the interior of the splicing plate (8). A plurality of exhaust grooves (10) are provided on the right side of the extrusion plate (9), and the cross section of each exhaust groove (10) is in an inverted "J" shape.

6. A cable terminal assembly according to claim 5, characterized in that: The outer surface of the connecting tube (301) is slidably connected to a pressing plate (11), a spring is provided between the pressing plate (11) and the splicing plate (8), a plurality of second push rods (12) are provided on the left side of the pressing plate (11), the other ends of the second push rods (12) penetrate the outer surface of the splicing plate (8) and extend to the inside of the exhaust groove (10), and a plurality of air inlet holes (13) are provided between the splicing plate (8) and the rubber ring (303).

7. A cable terminal assembly according to claim 6, characterized in that: A first insulating layer (14) is provided inside the inner tube (302), a first copper wire (15) is provided inside the first insulating layer (14), the output end (2) further comprises a second insulating layer (16), the second insulating layer (16) is arranged inside the connector (201), a second copper wire (17) is provided inside the second insulating layer (16), and the first copper wire (15) is in contact with the second copper wire.

8. A method for assembling a cable terminal assembly as claimed in claim 6, characterized in that: The steps include: S1, installing the output end (2) into the mounting base (1) through the wire entry groove (6), constraining the position of the output end (2) through the positioning assembly (4), pushing the input end (3) to the right so that the connector (201) is inserted into the input end (3), and fixing the wires again through the nut, thereby achieving the purpose of preliminary splicing; S2, the extrusion plate (9) is contracted inwardly by extrusion of the connecting head (201), so that the gas inside the splicing plate (8) is compressed and enters the rubber ring (303) through the air inlet hole (13) to expand and deform the rubber ring, thereby applying a certain pressure to the connecting head (201) to fix it more firmly; S3. When in use, the internal temperature gradually rises, and the expansion column (5) is heated and expanded, causing the connecting piece (202) to gradually rise, so that the connecting piece (202) gradually enters the clamping groove (304). At this time, the connecting piece (202) is located between the connecting head (201) and the inner tube (302), thereby achieving the purpose of clamping and fixing, and preventing the connection from falling off. When the temperature rises to reach a first threshold, the air supply pipe (203) and the heat dissipation pipe (305) are connected, so that the temperature can be discharged, thereby achieving the purpose of heat dissipation; S4. When the temperature rises to reach the second threshold value, the connecting member (202) passes over the connecting head (201) and completely enters the slot (304). Part of the heat gradually enters the rubber ring (303) through the one-way pressure valve, causing the rubber ring (303) to heat up and expand again. Under the expansion effect of the rubber ring (303), a certain thrust is generated, thereby breaking the expansion column (5), disconnecting the input end (3) and the output end (2), and avoiding overheating.

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