A copper-aluminum terminal connector

Abstract

The application discloses a copper-aluminum terminal connector in the technical field of copper-aluminum terminal connectors, which comprises a first shell and a second shell, and the end portions of the first shell and the second shell are mutually attached. In the process of connecting the copper wire and the aluminum wire, the first plug and the second plug are limited by the limiting ring and the limiting plate, which is conducive to keeping the first plug and the second plug stable after being installed in the first shell and the second shell, ensuring that the copper wire and the aluminum wire can be fixed after installation, facilitating the stable butt joint of the first plug and the second plug, and the second plug is clamped by the contact sheet, ensuring the stable conduction of power after the connection of the first plug and the second plug, avoiding the shaking of the first plug and the second plug during the direct sleeve joint of the first plug and the second plug, which leads to unstable contact and affects the power conduction effect.

Description

Technical Field

[0001] This invention relates to the field of copper-aluminum terminal connector technology, specifically to a copper-aluminum terminal connector. Background Technology

[0002] The terminals of power grid cables are usually made of copper, while aluminum has become a commonly used cable material due to its availability and light weight. When photovoltaic lines use aluminum or aluminum alloy conductor cables, the connection between copper and aluminum wires is involved. Since the electrode potential difference between copper and aluminum is large, when aluminum wires are directly connected to copper wires, an oxidation-reduction reaction occurs when electricity is applied, causing electrochemical corrosion of the aluminum wires. When electrical devices operate for a long time, are overloaded, or short-circuited, this can easily lead to safety accidents and pose a great safety hazard to the products.

[0003] In existing technologies, connecting copper and aluminum wires typically involves using copper-aluminum connectors. This requires first attaching connectors to the ends of both the copper and aluminum wires, then installing these connectors into two separate housings, and finally plugging the two housings together. The two connectors then join together to complete the connection. However, during this process, the connectors inside the housings can easily loosen, leading to unstable connections and affecting the connection effectiveness. This results in an unstable connection between the copper and aluminum wires after the connection is complete. Summary of the Invention

[0004] The purpose of this invention is to provide a copper-aluminum terminal connector to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a copper-aluminum terminal connector, comprising a first housing and a second housing, the ends of the first housing and the second housing being fitted together, a connecting cylinder being fixedly connected to the end of the first housing, the connecting cylinder extending into the interior of the second housing, a sealing ring being sleeved on the surface of the first connecting cylinder, a first connector and a second connector being respectively provided inside the first housing and the second housing, copper wire and aluminum wire being respectively connected to the two ends of the first connector and the second connector that are far apart from each other, and a snap-fit ​​mechanism being provided between the first housing and the second housing, the snap-fit ​​mechanism being used to snap-fit ​​and fix the ends of the first housing and the second housing. The first and second connectors are provided with a plugging mechanism on their surfaces. The plugging mechanism is used to plug the first and second connectors together. The first connector is provided with a conduction mechanism inside. The conduction mechanism is used to ensure a tight contact between the first and second connectors after plugging them together to ensure normal power conduction. The first and second connectors are both provided with a limiting mechanism on their surfaces. The limiting mechanism is used to limit the first and second connectors when they are installed in the first and second housings. The two ends of the first and second housings that are far apart are provided with a locking mechanism. The locking mechanism is used to lock the copper and aluminum wires inside the first and second housings.

[0006] As a further embodiment of the present invention, the snap-fit ​​mechanism includes two snap-fit ​​buckles, which are fixedly connected to the surface of the first housing near the second housing. The ends of the snap-fit ​​buckles are beveled. A snap-fit ​​groove is provided on the surface of the second housing near the first housing. The snap-fit ​​buckles extend into the snap-fit ​​groove to connect the first housing and the second housing.

[0007] As a further embodiment of the present invention, the plug-in mechanism includes a plug-in groove, which is formed at the end of the first plug-in and extends through the first plug-in. The copper wire is located inside the plug-in groove. The end of the second plug-in near the first plug-in is arc-shaped and extends into the plug-in groove. A connecting groove is formed on the surface of the end of the second plug-in away from the first plug-in. The aluminum wire is located inside the connecting groove. Fastening holes are formed on the surfaces of both the first and second plug-in. The two fastening holes extend to the plug-in groove and the connecting groove, respectively. The fastening holes are used to install fastening screws to fix the copper wire and the aluminum wire.

[0008] As a further embodiment of the present invention, the conductive mechanism includes two fixing rings, both of which are installed inside the plug slot. The end of the second plug passes through the fixing rings, and a plurality of arc-shaped contact pieces are fixedly connected between the two fixing rings. The plurality of contact pieces are bent toward the side closer to the second plug. Both fixing rings and contact pieces are conductors.

[0009] As a further embodiment of the present invention, the limiting mechanism includes two limiting rings, which are respectively installed on the surfaces of the first connector and the second connector. The surface of the limiting rings is provided with a plurality of openings arranged at equal angles. An inclined limiting plate is fixedly connected in each of the plurality of openings. The inner wall surfaces of the first housing and the second housing are provided with limiting grooves. The limiting rings are located in the limiting grooves, and the ends of the limiting plates are fitted inside the limiting grooves.

[0010] As a further embodiment of the present invention, the locking mechanism includes two sealing grooves, which are respectively opened on the two end surfaces of the first housing and the second housing that are far apart. An annular waterproof plug is provided in the sealing groove, and the waterproof plug extends to the outside of the sealing groove. A collar is fitted on the surface of the waterproof plug, and a plurality of clamping claws are fixedly connected to the surface of the collar. The outer side of the clamping claws is inclined. Locking caps are threadedly connected to the surfaces of the first housing and the second housing. The inner surface of one end of the locking cap is inclined. When the locking cap is installed on the surfaces of the first housing and the second housing, the locking cap squeezes the clamping claws and moves them inward.

[0011] As a further embodiment of the present invention, a first sliding groove is provided at both ends of the first housing and the second housing that are far apart from each other. The first sliding groove extends to the middle position of the first connector and the second connector, respectively. An L-shaped push rod is elastically slidably connected in the first sliding groove. The two push rods extend to the locking cap side of the end of the first housing and the second housing, respectively. The end of the push rod is inclined. A second sliding groove is provided on the inner wall surface of the first sliding groove, extending into the first housing and the second housing. The second sliding groove extends into the interior of the first housing and the second housing. A blocking rod is provided in the second sliding groove. The upper end of the blocking rod is inclined. The upper end of the blocking rod fits against the end of the push rod. An annular blocking groove is provided on the surface of both the first connector and the second connector.

[0012] As a further embodiment of the present invention, a Z-shaped third groove is formed on the inner wall surface of each of the two second grooves. The third grooves extend through the first housing and the second housing to the ends of the first housing and the second housing, respectively. The end of the third groove inside the second housing extends to the snap-fit ​​groove position. A trigger rod is elastically slidably connected in the third groove. The end of the trigger rod near the blocking rod is inclined. A triangular trigger block is fixedly connected to the surface of the blocking rod. The width of the second groove is twice the width of the first groove. The width of the blocking rod is the same as the width of the first groove. A sliding plate is elastically slidably connected vertically in the second groove. The blocking rod is elastically slidably connected to the sliding plate. The trigger rod is used to act on the trigger block to make the blocking rod slide along the sliding plate to one side.

[0013] As a further embodiment of the present invention, the bottom of the blocking rod is inclined, and the inner side of the blocking groove is inclined.

[0014] As a further embodiment of the present invention, a protective cylinder is slidably connected to the inner side of the locking cap, one end of the protective cylinder is located between the clamping claw and the protective cylinder, and the other side of the protective cylinder extends through the locking cap to the outer side of the locking cap.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the process of connecting copper and aluminum wires, this invention utilizes a limiting ring and a limiting plate to limit the first and second connectors, which helps to ensure stability of the first and second connectors after they are installed inside the first and second housings. The opening on the surface of the limiting ring ensures heat dissipation for the first and second connectors, and the clamping claws and locking caps clamp the passing copper and aluminum wires, ensuring that the copper and aluminum wires remain fixed after installation, facilitating stable connection of the first and second connectors. Furthermore, the contact piece clamps the second connector, ensuring stable power conduction after the connection of the first and second connectors, and preventing the first and second connectors from shaking during use due to direct sleeve connection, which could lead to unstable contact and affect power conduction.

[0017] In the process of connecting copper and aluminum wires, when the first and second connectors are installed inside the first and second housings, the blocking groove moves to the blocking rod position. After the first and second connectors are installed, the waterproof plug, collar, and locking cap need to be installed. When the locking cap is tightened, it acts on the push rod to move within the first sliding groove. The inclined surface at the end of the push rod acts on the inclined surface at the upper end of the blocking rod, causing the blocking rod to move closer to the blocking groove. The blocking rod moves into the blocking groove to limit the first and second connectors, which helps to keep the first and second connectors fixed after they are installed inside the first and second housings. This ensures stable connection of the first and second connectors during docking and avoids the situation where the first and second connectors are subjected to a large pushing force during docking, which could cause them to move and fail to dock stably, thus affecting the connection effect of the copper and aluminum wires.

[0018] In this invention, when the first housing and the second housing are joined, the first connector and the second connector are respectively located inside the first housing and the second housing. During the insertion process, the first connector and the second connector are restricted by the blocking rod and the blocking groove, and the locking buckle moves into the locking groove. Then, when the first housing and the second housing are fully joined, the locking buckle, having moved into the locking groove, is first squeezed, then enters the locking groove and returns to its original position, engaging with the locking groove. When the locking buckle returns to its original position, it actuates the trigger rod located inside the second housing. The trigger rod inside the first housing is squeezed by the end of the second housing when the first housing and the second housing are fully joined, triggering the movement of the trigger rod. The inclined surface at the end of the rod will cause the trigger block and the blocking rod to move to one side. The blocking rod moves in the second slide groove. The blocking rod moves to one side along the sliding plate and will be misaligned with the push rod. The blocking rod and the sliding plate will move out of the blocking groove under the action of the spring, releasing the limiting obstruction on the first and second plugs. This is beneficial for the blocking rod to move out of the blocking groove after the first and second plugs are connected, reducing the contact of the blocking rod during the use of the first and second plugs. On the one hand, it reduces the heat dissipation of the blocking rod and the first and second plugs during use, and on the other hand, it prevents the blocking rod from deforming due to the heat generated during the use of the first and second plugs, which would affect the subsequent use of the blocking rod. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall exploded structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall cross-section of the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle;

[0023] Figure 5 for Figure 3 Schematic diagram of the structure at point B;

[0024] Figure 6 for Figure 3 Schematic diagram of the structure at point C;

[0025] Figure 7 This is a schematic diagram of the structure after the first shell and the second shell are separated in this invention;

[0026] Figure 8 This is a schematic diagram of the structure after the first connector and the second connector are separated in this invention;

[0027] Figure 9This is a schematic diagram of the structure of the first connector and the second connector after being cut open in this invention;

[0028] Figure 10 This is a schematic diagram of the structure of the waterproof plug, collar, protective cylinder and locking cap after separation in this invention;

[0029] Figure 11 This is a schematic diagram of the structure of the second shell after it has been cut open in this invention;

[0030] Figure 12 This is a schematic diagram of the structure of the second sliding groove inside the second housing in this invention;

[0031] Figure 13 for Figure 12 Schematic diagram of the structure at point D;

[0032] Figure 14 This is a schematic diagram of the structure after the trigger rod and the blocking rod are separated in this invention;

[0033] Figure 15 This is a schematic diagram of the structure of the first shell after it has been cut open in this invention.

[0034] The attached figures are labeled as follows:

[0035] 1-First housing, 2-Second housing, 3-Connecting cylinder, 4-Sealing ring, 5-First connector, 6-Second connector, 7-Snap fastener, 8-Snap groove, 9-Connecting groove, 10-Connecting groove, 11-Fastening hole, 12-Fixing ring, 13-Contact piece, 14-Limiting ring, 15-Pass through, 16-Limiting plate, 17-Limiting groove, 18-Sealing groove, 19-Waterproof plug, 20-Collar ring, 21-Clamping claw, 22-Locking cap, 23-First slide groove, 24-Push rod, 25-Second slide groove, 26-Blocking rod, 27-Blocking groove, 28-Third slide groove, 29-Trigger rod, 30-Trigger block, 31-Sliding plate, 32-Protective cylinder. Detailed Implementation

[0036] Please see Figures 1-15This invention provides a technical solution: a copper-aluminum terminal connector, comprising a first housing 1 and a second housing 2, the ends of the first housing 1 and the second housing 2 being fitted together, a connecting cylinder 3 being fixedly connected to the end of the first housing 1, the connecting cylinder 3 extending into the interior of the second housing 2, a sealing ring 4 being sleeved on the surface of the first connecting cylinder 3, a first connector 5 and a second connector 6 being respectively provided inside the first housing 1 and the second housing 2, copper wire and aluminum wire being respectively connected to the two ends of the first connector 5 and the second connector 6 that are far apart, and a snap-fit ​​mechanism being provided between the first housing 1 and the second housing 2 for snap-fit ​​fixing the ends of the first housing 1 and the second housing 2. The surface of the second connector 6 is provided with a plugging mechanism for plugging the first connector 5 and the second connector 6 together. The first connector 5 is provided with a conduction mechanism to ensure a tight contact between the first connector 5 and the second connector 6 after plugging, thus ensuring normal power conduction. The surfaces of the first connector 5 and the second connector 6 are provided with limiting mechanisms to limit the first connector 5 and the second connector 6 when they are installed in the first housing 1 and the second housing 2. The two ends of the first housing 1 and the second housing 2 that are far apart are provided with locking mechanisms to lock the copper wires and aluminum wires inside the first housing 1 and the second housing 2.

[0037] The snap-fit ​​mechanism includes two snap-fit ​​buckles 7, which are fixedly connected to the surface of the first housing 1 near the second housing 2. The ends of the snap-fit ​​buckles 7 are beveled. The surface of the second housing 2 near the first housing 1 is provided with a snap-fit ​​groove 8. The snap-fit ​​buckles 7 extend into the snap-fit ​​groove 8 so that the first housing 1 and the second housing 2 are mated.

[0038] The plug-in mechanism includes a plug-in groove 9, which is formed at the end of the first plug-in 5 and extends through the first plug-in 5. The copper wire is located inside the plug-in groove 9. The end of the second plug-in 6 near the first plug-in 5 is arc-shaped and extends into the plug-in groove 9. The surface of the end of the second plug-in 6 away from the first plug-in 5 is provided with a connecting groove 10, and the aluminum wire is located inside the connecting groove 10. Both the first plug-in 5 and the second plug-in 6 are provided with fastening holes 11, which extend to the plug-in groove 9 and the connecting groove 10 respectively. The fastening holes 11 are used to install fastening screws to fix the copper wire and the aluminum wire.

[0039] The conducting mechanism includes two fixing rings 12, both of which are installed inside the plug slot 9. The end of the second plug 6 passes through the fixing rings 12. Multiple arc-shaped contact pieces 13 are fixedly connected between the two fixing rings 12. The multiple contact pieces 13 are all bent towards the side closer to the second plug 6. Both fixing rings 12 and contact pieces 13 are conductors.

[0040] The limiting mechanism includes two limiting rings 14, which are respectively installed on the surfaces of the first connector 5 and the second connector 6. The surface of the limiting ring 14 has multiple openings 15 arranged at equal angles. Each of the multiple openings 15 has a limiting plate 16 fixedly connected to it at an inclination. The inner wall surfaces of the first housing 1 and the second housing 2 are both provided with limiting grooves 17. The limiting ring 14 is located in the limiting groove 17, and the end of the limiting plate 16 will fit inside the limiting groove 17.

[0041] The locking mechanism includes two sealing grooves 18, which are respectively opened on the two ends of the first housing 1 and the second housing 2 that are far apart. An annular waterproof plug 19 is provided in the sealing groove 18. The waterproof plug 19 extends to the outside of the sealing groove 18. A collar 20 is fitted on the surface of the waterproof plug 19. Multiple clamping claws 21 are fixedly connected to the surface of the collar 20. The outer side of the clamping claws 21 is inclined. Locking caps 22 are threadedly connected to the surfaces of the first housing 1 and the second housing 2. The inner surface of one end of the locking cap 22 is inclined. When the locking cap 22 is installed on the surfaces of the first housing 1 and the second housing 2, the locking cap 22 squeezes the clamping claws 21 and moves them inward.

[0042] During the connection of copper and aluminum wires, the locking cap 22, collar 20, and waterproof plug 19 are first sequentially placed on the surfaces of the copper and aluminum wires. Then, the copper and aluminum wires are moved into the insertion slot 9 and connecting slot 10 respectively. Next, the fastening screws are installed in the fastening holes 11 to secure the copper and aluminum wires. Then, the first connector 5 and the second connector 6 are installed into the first housing 1 and the second housing 2 respectively. The end of the first connector 5 moves into the connecting cylinder 3, and the limiting ring 14 moves into the first housing 1 and the second housing 2 along with the first connector 5 and the second connector 6. The limiting ring 14 and the limiting plate 16 need to be moved into the limiting groove 17, and the end of the limiting plate 16 will abut against the inner wall surface of the limiting groove 17 to secure the first connector 5. The limiting position of the second connector 6 helps to ensure the stability of the first connector 5 and the second connector 6 after they are installed inside the first housing 1 and the second housing 2. The opening 15 on the surface of the limiting ring 14 ensures the heat dissipation of the first connector 5 and the second connector 6. Moreover, the multiple inclined limiting plates 16 can support the first connector 5 and the second connector 6, so that the first connector 5 and the second connector 6 can be positioned in the middle of the first housing 1 and the second housing 2, avoiding the first connector 5 and the second connector 6 being too close to the first housing 1 and the second housing 2, which would affect the heat dissipation. Then, the waterproof plug 19 is moved into the sealing groove 18, and the collar 20 is moved to fit over the surface of the waterproof plug 19. Then, the locking cap 2 is tightened. 2. The ends of the first housing 1 and the second housing 2 are screwed together. The inclined surface on the inner side of the locking cap 22 will press against the inclined surface on the outer side of the clamping claw 21. The clamping claw 21 will bend inward under the pressure of the locking cap 22. The clamping claw 21 will clamp the copper and aluminum wires that pass through, ensuring that the copper and aluminum wires remain fixed after installation, which facilitates the stable docking of the first connector 5 and the second connector 6. After the locking cap 22 is tightened, the connecting cylinder 3 is moved into the second housing 2. The end of the connecting cylinder 3 will move to the position of the second connector 6. Then, the end of the second connector 6 will move into the insertion groove 9 of the end of the first connector 5 inside the connecting cylinder 3. The end of the second connector 6 will move to the position of the fixing ring 12 and the contact piece 13. The second connector 6 presses against the contact piece 13, which clamps the second connector 6 to ensure stable power conduction after the connection between the first connector 5 and the second connector 6. This prevents the first connector 5 and the second connector 6 from shaking during use, which could lead to unstable contact and affect power conduction. When the connecting cylinder 3 is fully moved into the second housing 2, the sealing ring 4 moves into the second housing 2 to seal between the connecting cylinder 3 and the second housing 2. The snap fastener 7 moves into the snap groove 8. The snap fastener 7 is first pressed inward by the snap groove 8, and then moves outward to engage with the snap groove 8 when it is fully moved into the snap groove 8.The engagement of the snap-fit ​​7 and the snap-fit ​​groove 8 will lock the first housing 1 and the second housing 2 into place, ensuring a stable connection between them.

[0043] During the connection of copper and aluminum wires, when the first housing 1 and the second housing 2 are snapped together, the second connector 6 will move to the inside of the first connector 5. The first connector 5 and the second connector 6 will be subjected to opposing pushing forces during docking. The limiting plate 16 is prone to bending under the pushing force, affecting the normal docking of the first connector 5 and the second connector 6. As a further embodiment of the present invention, first sliding grooves 23 are provided at both ends of the first housing 1 and the second housing 2 that are far apart. The first sliding grooves 23 extend to the middle position of the first connector 5 and the second connector 6, respectively. An L-shaped push rod 24 is elastically slidably connected. The two push rods 24 extend to the locking cap 22 at the ends of the first housing 1 and the second housing 2, respectively. The ends of the push rods 24 are beveled. A second slide groove 25 extending into the first housing 1 and the second housing 2 is provided on the inner wall surface of the first slide groove 23. The second slide groove 25 extends into the first housing 1 and the second housing 2. A blocking rod 26 is provided in the second slide groove 25. The upper end of the blocking rod 26 is beveled. The upper end of the blocking rod 26 fits against the end of the push rod 24. The surfaces of the first connector 5 and the second connector 6 are both provided with annular blocking grooves 27.

[0044] During the connection of copper and aluminum wires, when the first connector 5 and the second connector 6 are installed inside the first housing 1 and the second housing 2, the blocking groove 27 will move to the position of the blocking rod 26. After the first connector 5 and the second connector 6 are installed, the waterproof plug 19, the collar 20, and the locking cap 22 need to be installed. When the locking cap 22 is tightened, it will push the push rod 24 to move within the first slide groove 23. The inclined surface at the end of the push rod 24 will act on the inclined surface at the upper end of the blocking rod 26, causing the blocking rod 26 to move closer to the blocking groove 27. The first connector 5 and the second connector 6 will move into the blocking groove 27 to limit their movement. This helps to keep the first connector 5 and the second connector 6 fixed after they are installed inside the first housing 1 and the second housing 2. This ensures that the first connector 5 and the second connector 6 can be stably connected when they are connected. It also prevents the first connector 5 and the second connector 6 from moving due to the large pushing force when the first housing 1 and the second housing 2 are connected. This would prevent the first connector 5 and the second connector 6 from being stably connected and thus affect the connection effect between the copper wire and the aluminum wire.

[0045] During use after the first connector 5 and the second connector 6 are connected, the first connector 5 and the second connector 6 will generate heat when conducting electricity. Prolonged contact between the blocking rod 26 and the first connector 5 and the second connector 6 will affect heat dissipation, and the increased temperature will cause the blocking rod 26 to deform. As a further embodiment of the invention, Z-shaped third sliding grooves 28 are formed on the inner wall surfaces of both second sliding grooves 25. The third sliding grooves 28 extend through the first housing 1 and the second housing 2 to the ends of the first housing 1 and the second housing 2, respectively. The third sliding groove 28 is located inside the second housing 2. The end of the 8 extends to the position of the snap-fit ​​groove 8. A trigger rod 29 is elastically slidably connected in the third slide groove 28. The end of the trigger rod 29 near the blocking rod 26 is inclined. A triangular trigger block 30 is fixedly connected to the surface of the blocking rod 26. The width of the second slide groove 25 is twice the width of the first slide groove 23. The width of the blocking rod 26 is the same as the width of the first slide groove 23. A sliding plate 31 is elastically slidably connected up and down in the second slide groove 25. The blocking rod 26 is elastically slidably connected to the sliding plate 31. The trigger rod 29 is used to act on the trigger block 30 to make the blocking rod 26 slide along the sliding plate 31 to one side.

[0046] When the first housing 1 and the second housing 2 are connected, the first connector 5 and the second connector 6 are respectively located inside the first housing 1 and the second housing 2. During the connection process, the first connector 5 and the second connector 6 are restricted by the blocking rod 26 and the blocking groove 27, and the locking buckle 7 moves into the locking groove 8. When the first housing 1 and the second housing 2 are fully connected, the locking buckle 7, after moving into the locking groove 8, is first squeezed and then enters the locking groove 8 before returning to its original position and engaging with the locking groove 8. When the locking buckle 7 returns to its original position, it actuates the trigger rod 29 located inside the second housing 2. The trigger rod 29 inside the first housing 1 is squeezed by the end of the second housing 2 when the first housing 1 and the second housing 2 are fully connected, causing the trigger rod 29 to move. The surface will trigger the block 30 and the blocking rod 26 to move to one side. The blocking rod 26 moves within the second slide groove 25. The blocking rod 26 moves to one side along the sliding plate 31 and will be misaligned with the push rod 24. The blocking rod 26 and the sliding plate 31 will move out of the blocking groove 27 under the action of the spring, releasing the limiting obstruction on the first connector 5 and the second connector 6. This is beneficial for the blocking rod 26 to move out of the blocking groove 27 after the first connector 5 and the second connector 6 are connected. It reduces the contact of the blocking rod 26 during the use of the first connector 5 and the second connector 6. On the one hand, it reduces the heat dissipation of the blocking rod 26 during the use of the first connector 5 and the second connector 6. On the other hand, it prevents the blocking rod 26 from deforming due to the heat generated during the use of the first connector 5 and the second connector 6, which would affect the subsequent use of the blocking rod 26.

[0047] During the installation of the first connector 5 and the second connector 6, the blocking rod 26 is difficult to move accurately into the blocking groove 27. As a further embodiment of the present invention, the bottom of the blocking rod 26 is inclined, and the inner side of the blocking groove 27 is inclined.

[0048] During the installation of the first connector 5 and the second connector 6, the blocking rod 26 will move closer to the blocking groove 27. When the inclined surface at the bottom of the blocking rod 26 and the inclined surface inside the blocking groove 27 prevent the blocking groove 27 from moving accurately to the position of the blocking rod 26, the first connector 5 or the second connector 6 can move under the action of the inclined surface at the bottom of the blocking rod 26 during the downward movement of the blocking rod 26, thereby increasing the matching range between the blocking rod 26 and the blocking groove 27.

[0049] During the connection of copper and aluminum wires, the clamping claw 21 clamps the copper and aluminum wires. When the clamped wires move, they are prone to metal fatigue at the clamping point, leading to breakage. As a further aspect of the invention, a protective cylinder 32 is slidably connected to the inner side of the locking cap 22. One end of the protective cylinder 32 is located between the clamping claw 21 and the protective cylinder 32, and the other side of the protective cylinder 32 extends through the locking cap 22 to the outside of the locking cap 22.

[0050] During the connection of copper and aluminum wires, when the two locking caps 22 are installed on the surfaces of the first housing 1 and the second housing 2, the locking caps 22 will squeeze the clamping claws 21. The protective cylinder 32 will extend from the locking caps 22 under the action of the clamping claws 21 to support and protect the copper and aluminum wires. This will prevent the copper and aluminum wires from shaking during subsequent use, which could cause metal fatigue and breakage at the clamping claws 21, thus reducing the service life of the copper and aluminum wires.

Claims

1. A copper-aluminum terminal connector, comprising a first housing (1) and a second housing (2), characterized in that: The ends of the first housing (1) and the second housing (2) are fitted together. A connecting cylinder (3) is fixedly connected to the end of the first housing (1). The connecting cylinder (3) extends into the interior of the second housing (2). A sealing ring (4) is fitted on the surface of the connecting cylinder (3). A first connector (5) and a second connector (6) are respectively provided inside the first housing (1) and the second housing (2). Copper wire and aluminum wire are respectively connected to the far ends of the first connector (5) and the second connector (6). A snap-fit ​​mechanism is provided between the first housing (1) and the second housing (2). The snap-fit ​​mechanism is used to snap-fit ​​and fix the ends of the first housing (1) and the second housing (2). The surfaces of the first connector (5) and the second connector (6) are provided with inserts. The connection mechanism is used to connect the first connector (5) and the second connector (6). The first connector (5) is provided with a conduction mechanism inside. The conduction mechanism is used to ensure the tight contact between the first connector (5) and the second connector (6) after they are connected to ensure the normal conduction of electricity. The first connector (5) and the second connector (6) are both provided with a limiting mechanism on their surfaces. The limiting mechanism is used to limit the first connector (5) and the second connector (6) when they are installed in the first housing (1) and the second housing (2). The two ends of the first housing (1) and the second housing (2) that are far apart are provided with a locking mechanism. The locking mechanism is used to lock the copper wire and aluminum wire inside the first housing (1) and the second housing (2). The second housing (2) has a snap-fit ​​groove (8) on one end surface near the first housing (1); The locking mechanism includes two sealing grooves (18), which are respectively opened on the two ends of the first housing (1) and the second housing (2) that are far apart. An annular waterproof plug (19) is provided in the sealing groove (18). The waterproof plug (19) extends to the outside of the sealing groove (18). A collar (20) is fitted on the surface of the waterproof plug (19). Multiple clamping claws (21) are fixedly connected to the surface of the collar (20). The outer side of the clamping claws (21) is inclined. Locking caps (22) are threadedly connected to the surfaces of the first housing (1) and the second housing (2). The inner surface of one end of the locking cap (22) is inclined. When the locking cap (22) is installed on the surfaces of the first housing (1) and the second housing (2), the locking cap (22) squeezes the clamping claws (21) to move inward. First sliding grooves (23) are provided at both ends of the first housing (1) and the second housing (2) that are far apart. The first sliding grooves (23) extend to the middle position of the first connector (5) and the second connector (6). An L-shaped push rod (24) is elastically slidably connected in the first sliding groove (23). The two push rods (24) extend to the locking cap (22) at the end of the first housing (1) and the second housing (2) respectively. The end of the push rod (24) is inclined. A second sliding groove (25) extending into the first housing (1) and the second housing (2) is provided on the inner wall surface of the first sliding groove (23). A blocking rod (26) is provided in the second sliding groove (25). The upper end of the blocking rod (26) is inclined. The upper end of the blocking rod (26) is in contact with the end of the push rod (24). An annular blocking groove (27) is provided on the surface of the first connector (5) and the second connector (6). Both of the inner walls of the two second sliding grooves (25) are provided with Z-shaped third sliding grooves (28). The third sliding grooves (28) extend through the first housing (1) and the second housing (2) to the ends of the first housing (1) and the second housing (2), respectively. The end of the third sliding groove (28) inside the second housing (2) extends to the position of the snap-fit ​​groove (8). A trigger rod (29) is elastically slidably connected inside the third sliding groove (28). The end of the trigger rod (29) near the blocking rod (26) is inclined. A triangular trigger block (30) is fixedly connected to the surface of the blocking rod (26). The width of the second slide groove (25) is twice the width of the first slide groove (23). The width of the blocking rod (26) is the same as the width of the first slide groove (23). A sliding plate (31) is elastically slidably connected to the inside of the second slide groove (25). The blocking rod (26) is elastically slidably connected to the sliding plate (31). The trigger rod (29) is used to act on the trigger block (30) to make the blocking rod (26) slide to one side along the sliding plate (31).

2. The copper-aluminum terminal connector according to claim 1, characterized in that: The snap-fit ​​mechanism includes two snap-fit ​​buckles (7), which are fixedly connected to the surface of the first housing (1) near the second housing (2). The end of the snap-fit ​​buckle (7) is a bevel, and the snap-fit ​​buckle (7) extends into the snap-fit ​​groove (8) to connect the first housing (1) and the second housing (2).

3. A copper-aluminum terminal connector according to claim 2, characterized in that: The plug-in mechanism includes a plug groove (9), which is opened at the end of the first plug (5) and extends through the first plug (5). The copper wire is located in the plug groove (9). The second plug (6) is arc-shaped at the end near the first plug (5) and extends into the plug groove (9). A connecting groove (10) is opened on the surface of the second plug (6) away from the first plug (5). The aluminum wire is located in the connecting groove (10). Fastening holes (11) are opened on the surfaces of the first plug (5) and the second plug (6). The two fastening holes (11) extend to the plug groove (9) and the connecting groove (10) respectively. The fastening holes (11) are used to install fastening screws to fix the copper wire and the aluminum wire.

4. A copper-aluminum terminal connector according to claim 3, characterized in that: The conductive mechanism includes two fixing rings (12), both of which are installed inside the plug slot (9). The end of the second plug (6) passes through the fixing rings (12). Multiple arc-shaped contact pieces (13) are fixedly connected between the two fixing rings (12). The multiple contact pieces (13) are bent toward the side closer to the second plug (6). Both fixing rings (12) and contact pieces (13) are conductors.

5. A copper-aluminum terminal connector according to claim 1, characterized in that: The limiting mechanism includes two limiting rings (14), which are respectively installed on the surfaces of the first connector (5) and the second connector (6). The surface of the limiting ring (14) is provided with multiple openings (15) arranged at equal angles. Each of the multiple openings (15) is fixedly connected with a limiting plate (16) arranged at an inclination. The inner wall surfaces of the first housing (1) and the second housing (2) are provided with limiting grooves (17), and the limiting ring (14) is located in the limiting groove (17).

6. A copper-aluminum terminal connector according to claim 1, characterized in that: The bottom of the blocking rod (26) is inclined, and the inner side of the blocking groove (27) is inclined.

7. A copper-aluminum terminal connector according to claim 1, characterized in that: A protective tube (32) is slidably connected to the inner side of the locking cap (22), and one side of the protective tube (32) extends through the locking cap (22) to the outer side of the locking cap (22).

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