Fire-melting pressure-free wiring terminal for electric power and use method of fire-melting pressure-free wiring terminal

Abstract

The invention is applicable to the technical field of electric power and electrical, and provides an electric fire-melting pressure-free wiring terminal, which comprises a wiring pipe and a fixing plate, and is characterized in that the fixing plate is integrally and fixedly connected to the top of the wiring pipe; the wiring pipe is provided with a wiring hole from the bottom to the inside and is used for connecting a wire, and the fixing plate is used for connecting a binding post of electric power electrical equipment; one side of the wiring pipe is provided with a filler opening, and the filler opening is communicated with the wiring hole and is used for placing a copper net and a fire flux. According to the fire-melting pressure-free wiring terminal for the electric power and the use method provided by the scheme, the dependence of a traditional pressure welding mode on operation force is abandoned, the hidden danger of short circuit caused by wire breakage or internal virtual connection due to overlarge pressure welding force is avoided, and the stability and the consistency of connection quality are remarkably improved; metallurgical connection formed by fire fusion welding has extremely low contact resistance and excellent conductivity, the connection strength is far higher than that of mechanical compression joint, and larger mechanical tension and current impact can be borne.

Description

Technical Field

[0001] This invention belongs to the field of power and electrical technology, and in particular relates to a fire-fused pressure-free terminal block for power applications and its usage method. Background Technology

[0002] As a type of terminal block, a wire lug is an accessory product used to achieve electrical connections. Wire lugs are commonly used for connecting and splicing the ends of wires, allowing for a more secure and safer connection between wires and the terminals of equipment.

[0003] Currently, when using wire lugs to connect wires, a crimping device is required to crimp the wire lug, causing it to deform and the internal cavity to shrink and compress the wire. While this method is simple to operate, the crimping method is relatively laborious. Excessive crimping force can easily break the wire, resulting in a loose connection and causing a short circuit. The strength of the connection depends entirely on the crimping force applied by the operator. Summary of the Invention

[0004] This invention provides a crimp-free electrical terminal block and its usage method, aiming to solve the problems mentioned in the background art, such as the current crimping method for connecting wires and lugs, which is laborious and prone to wire breakage.

[0005] To solve the above problems, the present invention is implemented as follows: a power-use fire-fused pressure-free terminal block includes: a wiring conduit and a fixing plate, wherein the fixing plate is integrally fixed to the top of the wiring conduit; the wiring conduit has a wiring hole from the bottom inward for connecting wires, and the fixing plate is used to connect the terminal of electrical equipment; a filler opening is provided on one side of the wiring conduit, the filler opening is connected to the wiring hole, and is used to put copper mesh and fire-fused flux.

[0006] Preferably, the filler opening is provided with a cover, and the cover is detachably connected to the wiring conduit.

[0007] Preferably, the cover has a through hole, the outer side of the connector has a threaded blind hole, and the cover has a bolt that passes through the through hole and is screwed into the threaded blind hole for connecting the cover to the connector.

[0008] Preferably, the cover is fixedly installed with a mating protrusion for embedding into the filler opening when the cover is connected to the wiring pipe.

[0009] Preferably, the fixing plate has fixing holes, and the fixing holes may be one or more.

[0010] Preferably, the bottom end of the wiring hole is the feeding end, and the top end is the closing end. The inner cavity extending from the closing end to the feeding end gradually narrows and is cone-shaped as a whole, which is used to fill the copper mesh and flux.

[0011] Preferably, the connection point between the conduit and the fixing plate is at a bend, the closed end corresponds to the bend, and the opening position of the packing opening corresponds to the bend and the closed end.

[0012] This invention also includes a method for using a fire-fused, pressure-free terminal block for electrical applications, comprising the following steps: Step 1: Preparation for docking; use tools to remove the bolts and take off the cover; Step 2: Wire connection. Strip the outer sheath of the wire connection end, and then insert the wire bundle from the feed end into the specified depth in the wiring hole. Step 3: Welding connection. Put copper mesh and flux into the filler opening to fill the gap between the wire harness and the terminal hole. During filling, the terminal tube can be rotated to make the copper mesh and flux more evenly distributed. After filling, ignite the copper mesh and flux at the filler opening to weld the wire to the terminal tube. Step 4: After the welding is completed, confirm that it has cooled and is firmly welded. If it is not firmly welded, a second welding can be performed. After it is firmly welded, use a fixing plate and fixing holes to fix it to the terminal of the electrical equipment.

[0013] Compared with related technologies, the electric arc-fusing pressure-free terminal block and its usage method provided by the present invention have the following beneficial effects: Compared with existing technologies, the fire-fusion welded terminals and their application method provided in this solution eliminate the reliance on operating force in traditional crimping methods, avoiding the risk of short circuits caused by wire breakage or internal loose connections due to excessive crimping force. This significantly improves the stability and consistency of connection quality. The metallurgical connection formed by fire fusion welding has extremely low contact resistance and excellent conductivity, with a connection strength far exceeding that of mechanical crimping, and can withstand greater mechanical tension and current surges. At the same time, fire fusion welding is relatively labor-saving, greatly reducing labor intensity and technical barriers, and is particularly suitable for connecting large-section conductors, effectively ensuring the operational safety and reliability of the power system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a fire-melting pressure-free terminal block for electric applications provided by the present invention; Figure 2 This is a side cross-sectional view of a fire-melting pressure-free terminal block for electric applications provided by the present invention; Figure 3 for Figure 2 The diagram shows an enlarged view of part A.

[0015] Reference numerals: 1. Connecting pipe; 2. Fixing plate; 3. Connecting hole; 4. Packing opening; 5. Cover; 6. Bolt; 7. Through hole; 8. Threaded blind hole; 9. Butt joint protrusion; 10. Fixing hole; 11. Feed end; 12. Closed end; 13. Bend. Detailed Implementation

[0016] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0017] This invention provides a power-use flame-fusion non-voltage-free terminal block and its usage method, such as... Figure 1-3 As shown, the electric arc-fusing pressure-free terminal block includes: a connecting pipe 1 and a fixing plate 2, wherein the fixing plate 2 is integrally fixed to the top of the connecting pipe 1; the connecting pipe 1 has a connecting hole 3 from the bottom inward for connecting wires, and the fixing plate 2 is used to connect the terminals of electrical equipment; a filler opening 4 is provided on one side of the connecting pipe 1, and the filler opening 4 is connected to the connecting hole 3 for inserting copper mesh and flux.

[0018] In this embodiment, the terminal block is used in the following manner; Preparation and Filler Installation: First, insert the wire to be connected through the wiring hole 3 at the bottom of the connector 1, so that the end of the wire reaches the appropriate position inside the connector 1; then, through the filler opening 4 on the side of the connector 1, put the copper mesh and flux into the wiring hole 3 in sequence, ensuring that the flux is in full contact with the end of the wire. Fire fusion welding and fixed connection: A special ignition device is used to ignite the flammable flux through the filler opening 4. The flammable flux undergoes a high-temperature combustion reaction, generating a large amount of heat that rapidly melts the metal on the surface of the copper mesh and the wire end. The molten copper fills the gap inside the wiring hole 3, fusing the wire and the wiring pipe 1 into one piece. After cooling, the wire and the wiring pipe 1 form a permanent metallurgical connection. Finally, the connection is mechanically fixed to the terminal of the electrical equipment through the mounting holes on the fixing plate 2, completing the entire electrical connection process.

[0019] This terminal block uses fire-fusion welding technology instead of the traditional mechanical crimping method. When the fire flux is ignited, it reacts in the sealed cavity of the terminal block 1, instantly generating high temperature that melts the copper mesh into molten copper. At the same time, the metal surface of the wire end also melts. The molten copper flows in the terminal hole 3 and fills all gaps. After cooling, it forms a metallurgical bond at the molecular level, making the wire and the terminal block 1 an inseparable whole. The integrated design of the fixing plate 2 and the terminal block 1 ensures the stability of the mechanical and electrical connections. The design of the filler opening 4 facilitates construction and operation, and also serves to relieve pressure and allow for observation during the fire-fusion process.

[0020] This structure eliminates the reliance on operational force in traditional crimping methods, avoiding the risk of short circuits caused by wire breakage or internal loose connections due to excessive crimping force, and significantly improves the stability and consistency of connection quality. The metallurgical connection formed by fire fusion welding has extremely low contact resistance and excellent conductivity, and the connection strength is much higher than that of mechanical crimping, and it can withstand greater mechanical tension and current impact. At the same time, fire fusion welding is relatively labor-saving, greatly reducing labor intensity and technical threshold, and is particularly suitable for connecting large cross-section conductors, effectively ensuring the operational safety and reliability of the power system.

[0021] In a further preferred embodiment of the present invention, a cover 5 is provided at the filler opening 4, and the cover 5 is detachably connected to the wiring pipe 1.

[0022] In this embodiment, after inserting the wire to be connected through the wiring hole 3 at the bottom of the wiring tube 1 and bringing the end of the wire to a suitable position inside the wiring tube 1, the cover 5 that is detached from the wiring tube 1 is then removed. Through the filler opening 4 on the side of the wiring tube 1, copper mesh and flux are sequentially placed into the wiring hole 3. The wire and the wiring tube 1 are fused together. After cooling, the wire and the wiring tube 1 form a permanent metallurgical connection. At this point, the cover 5 can be retained or removed.

[0023] In a further preferred embodiment of the present invention, the cover 5 is provided with a through hole 7, the outer side of the connector 1 is provided with a threaded blind hole 8, and the cover 5 is provided with a bolt 6 that passes through the through hole 7 and is screwed into the threaded blind hole 8 for connecting the cover 5 and the connector 1.

[0024] In this embodiment, the cover 5 and the wiring pipe 1 are detachably connected by the threaded engagement structure of the bolt 6, the through hole 7 and the threaded blind hole 8.

[0025] In a further preferred embodiment of the present invention, a mating protrusion 9 is fixedly installed on the cover 5, which is used to embed the cover 5 into the filler opening 4 when it is connected to the wiring pipe 1.

[0026] In this embodiment, the mating protrusion 9 fixedly installed on the cover 5 forms an embedded fit connection with the packing opening 4 on the side of the connector 1. The outer contour of the mating protrusion 9 matches the inner cavity shape of the packing opening 4. When the cover 5 is installed, the mating protrusion 9 is inserted into the packing opening 4. The axial and radial limiting and fixing are achieved through the interference fit, friction or snap-fit ​​structure between the two, which facilitates the quick connection between the cover 5 and the connector 1.

[0027] In a further preferred embodiment of the present invention, the fixing plate 2 is provided with fixing holes 10, and the fixing holes 10 have one or more.

[0028] In this embodiment, the electrical connection process is completed by using fasteners such as bolts, screws or pins to mechanically fix the electrical equipment to the terminals or mounting base through one or more fixing holes 10 on the fixing plate 2.

[0029] In a further preferred embodiment of the present invention, the bottom end of the wiring hole 3 is the feeding end 11, and the top end is the closing end 12. The inner cavity of the closing end 12 extending towards the feeding end 11 gradually narrows and is cone-shaped as a whole, and is used to fill copper mesh and flux.

[0030] In this embodiment, the inner cavity of the closed end 12 extending towards the feed end 11 gradually narrows into a cone shape. The closed end 12 has a large space, which facilitates the filling of copper mesh and flux. At the same time, it provides sufficient space for melting. Under the action of gravity and capillary action, the molten copper flows downward along the cone surface and fills the entire internal gap of the wiring hole 3. The cone-shaped structure promotes the penetration and filling of the molten copper towards the feed end 11, and the wire and the wiring tube 1 are fused and cast into a cone-shaped metallurgical bond. After cooling, the wire and the wiring tube 1 form a permanent connection, and the cone-shaped joint surface provides axial and radial connection.

[0031] In a further preferred embodiment of the present invention, the connection position of the wiring pipe 1 and the fixing plate 2 is the bend 13, the closed end 12 corresponds to the bend 13, and the opening position of the packing opening 4 corresponds to the bend 13 and the closed end 12.

[0032] In this embodiment, the bend 13 is the natural bend formed by the conduit 1 and the fixing plate 2.

[0033] In summary, compared with related technologies, this device eliminates the reliance on operational force in traditional crimping methods, avoiding the risk of short circuits caused by wire breakage or internal loose connections due to excessive crimping force, and significantly improves the stability and consistency of connection quality. The metallurgical connection formed by fire fusion welding has extremely low contact resistance and excellent conductivity, and the connection strength is much higher than that of mechanical crimping, capable of withstanding greater mechanical tension and current surges. At the same time, fire fusion welding is relatively labor-saving, greatly reducing labor intensity and technical threshold, and is particularly suitable for connecting large-section conductors, effectively ensuring the operational safety and reliability of the power system.

[0034] This invention also includes a method for using a fire-fused, pressure-free terminal block for electrical applications, comprising the following steps: Step 1: Preparation for docking, use tools to remove bolts 6 and take off cover 5; Step 2: Connecting wires. Strip the outer sheath of the wires at the connection end, and then insert the wire bundle at the connection end into the designated depth in the connection hole 3 through the feed end 11. Step 3: Welding connection. Copper mesh and flux are placed through the filler opening 4 to fill the gap between the wire bundle and the terminal hole 3. During filling, the terminal tube 1 can be rotated to make the copper mesh and flux more evenly distributed. After filling, the copper mesh and flux are ignited through the filler opening 4 to weld the wire to the terminal tube 1. Step 4: After the welding is completed, confirm that it has cooled and is firmly welded. If it is not firmly welded, a second welding can be performed. After it is firmly welded, use the fixing plate 2 and fixing hole 10 to fix it to the terminal of the electrical equipment.

[0035] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A fire-fused, pressure-free terminal block for electrical applications, characterized in that, include: A wiring conduit and a fixing plate, wherein the fixing plate is integrally fixed to the top of the wiring conduit; The wiring conduit has wiring holes from the bottom inward for connecting wires, and the fixing plate is used to connect the terminals of electrical equipment. A filler opening is provided on one side of the wiring conduit. The filler opening is connected to the wiring hole and is used to insert copper mesh and flux.

2. The electric arc-fusing non-critical terminal block as described in claim 1, characterized in that, The filler opening is provided with a cover, which is detachably connected to the wiring conduit.

3. The electric arc-fusing non-critical terminal block as described in claim 2, characterized in that, The cover has a through hole, and the outer side of the connector has a threaded blind hole. The cover has a bolt that passes through the through hole and is screwed into the threaded blind hole for connecting the cover and the connector.

4. The electric arc-fusing non-critical terminal block as described in claim 2, characterized in that, The cover is fixedly installed with a mating protrusion, which is used to embed the cover into the filler opening when it is connected to the wiring pipe.

5. The electric arc-fusing non-critical terminal block as described in claim 1, characterized in that, The fixing plate has fixing holes, and there are one or more fixing holes.

6. The electric arc-fusing non-critical terminal block as described in claim 1, characterized in that, The bottom end of the wiring hole is the feeding end, and the top end is the closing end. The inner cavity extending from the closing end to the feeding end gradually narrows and is cone-shaped as a whole, used to fill copper mesh and flux.

7. The electric arc-fusing non-critical terminal block as described in claim 6, characterized in that, The connection point between the conduit and the fixing plate is at a bend, the closed end corresponds to the bend, and the opening position of the packing opening corresponds to both the bend and the closed end.

8. The method of using the electric arc-fused non-critical terminal block as described in any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Preparation for docking; use tools to remove the bolts and take off the cover; Step 2: Wire connection. Strip the outer sheath of the wire connection end, and then insert the wire bundle from the feed end into the specified depth in the wiring hole. Step 3: Welding connection. Put copper mesh and flux into the filler opening to fill the gap between the wire harness and the terminal hole. During filling, the terminal tube can be rotated to make the copper mesh and flux more evenly distributed. After filling, ignite the copper mesh and flux at the filler opening to weld the wire to the terminal tube. Step 4: After the welding is completed, confirm that it has cooled and is firmly welded. If it is not firmly welded, a second welding can be performed. After it is firmly welded, use a fixing plate and fixing holes to fix it to the terminal of the electrical equipment.

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