Plug wiring terminal of connector

The plug terminal with a copper-aluminum conductive core and locking mechanism addresses the issues of inconvenient wiring and corrosion in terminal blocks, ensuring secure and corrosion-resistant connections.

CN222146705UActive Publication Date: 2024-12-10DONGGUAN SIPU SOLAR TECH CO LTD
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Patent Information

Application Number
CN202420707018.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2024-12-10
Estimated Expiration
2034-04-08

AI Technical Summary

Technical Problem

Existing terminal blocks face issues of inconvenient wiring operation, loose cables, poor contact, high resistance, and corrosion due to oxidation-reduction reactions when copper and aluminum wires are used together, posing safety hazards.

Method used

A plug terminal with a conductive core comprising a copper terminal and an aluminum terminal, connected via a quick-connect assembly, which includes a locking mechanism to secure cables and prevent oxidation-reduction reactions by ensuring tight connections and using a sealing ring to prevent dust ingress.

Benefits of technology

The solution provides convenient and secure cable connections, prevents loose cables, and avoids corrosion by preventing oxidation-reduction reactions at the contact area, enhancing safety and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a plug wiring terminal of a connector, and aims to solve the problems that a conventional wiring terminal is inconvenient in wiring operation, a cable is easy to loosen and poor in contact, and in a scene that a copper wire and an aluminum wire need to be used at the same time, a contact area is subjected to an oxidation-reduction reaction, so that the wiring operation is inconvenient. The corrosion of the male head terminal made of the metal aluminum material is accelerated; and great potential safety hazards are caused to the safety of the product. The plug wiring terminal comprises an insulating shell and a conductive core body, the conductive core body is arranged in the insulating shell, and the conductive core body comprises a copper terminal, a connecting part and an aluminum terminal. And in a scene that a copper wire and an aluminum wire need to be used at the same time, oxidation-reduction reaction can occur in a contact area, corrosion of the male head terminal made of a metal aluminum material is accelerated, and great potential safety hazards are caused to the safety of a product.
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Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a plug connection terminal of a connector. Background Art

[0002] Terminal blocks are an accessory product used to achieve electrical connections. They are classified as connectors in the industry. With the development of the electronics industry, the scope of use of terminal blocks is expanding, and there are more and more types of terminal blocks. In addition to PCB board terminals, the most widely used ones are hardware terminals, nut terminals, spring terminals, etc.

[0003] The structure of traditional terminal blocks is to use special tools to squeeze and flatten the wire nose and crimp the cable into the wire nose. This terminal block has the disadvantages of inconvenient wiring operation, easy to cause loose cables and poor contact, high resistance, and poor safety. In addition, some scenarios require the use of copper wire and aluminum wire at the same time. If copper and aluminum are used, since the potential of metal aluminum is 1.66V and the potential of metal copper is +0.34V, an oxidation-reduction reaction will occur in the contact area during the power-on process, which will accelerate the corrosion of the male terminal made of metal aluminum, posing a great safety hazard to the product. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a plug terminal for a connector to solve the technical problems that the existing terminal has the problems of inconvenient wiring operation, easy loosening of cables and poor contact, and in scenarios where copper wire and aluminum wire need to be used at the same time, oxidation-reduction reaction will occur in the contact area, accelerating the corrosion of the male terminal made of metal aluminum, posing a great safety hazard to the product.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a plug terminal of a connector, which includes an insulating shell and a conductive core, which is arranged inside the insulating shell. The conductive core includes a copper terminal, a connecting part and an aluminum terminal. One end of the connecting part is fixedly connected to the copper terminal, and the other end of the connecting part is fixedly connected to the aluminum terminal. The copper terminal is made by a stamping and rolling process, and an inclined spring is installed inside the copper terminal. A quick-connect assembly is provided at one end of the insulating shell.

[0008] Preferably, the conductive core is a copper-aluminum transition plate, and the aluminum terminal is made by a stamping and rounding process.

[0009] Furthermore, the conductive core is a copper-aluminum composite plate, and the aluminum terminal is made by a reverse stamping and rounding process.

[0010] Furthermore, the aluminum terminal is one of a circular hole, a U-shaped hole or a V-shaped hole.

[0011] Furthermore, the insulating shell includes a plug-in portion, a bent tube portion and a locking portion, one end of the bent tube portion is fixedly connected to the locking portion, the other end of the bent tube portion is fixedly connected to the plug-in portion, the copper terminal is located inside the plug-in portion, the aluminum terminal is located inside the locking portion, the quick-connect assembly includes a locking cap, a locking sleeve and a sleeve, the outer surface of the locking portion is provided with an external thread and is threadedly connected to the locking cap, one end of the sleeve is sleeved on the outer surface of the aluminum terminal and is provided with a step groove, the locking sleeve is sleeved on the outer surface of the sleeve and is located inside the locking cap, the locking sleeve cooperates with the locking cap to lock and fix the cable, in this way, the aluminum conductor cable is inserted into the aluminum terminal, and then the locking cap is rotated, at which time the locking cap moves to the right and squeezes the locking sleeve, and the left end of the locking sleeve contracts inward to fix the aluminum conductor cable.

[0012] Furthermore, the locking sleeve is cylindrical, one end of the locking sleeve is provided with a plurality of long holes and a protrusion is fixedly connected inside, and the left inner wall of the locking cap is fixedly connected with a protrusion corresponding to the left end of the locking sleeve. In this way, when the locking cap is moved to the right and squeezes the locking sleeve, the left end of the locking sleeve can be more easily contracted inwardly, and at the same time, the protrusion can be pressed more tightly against the aluminum conductor cable.

[0013] Furthermore, a plug is installed on the upper surface of the plug-in portion, and the plug is used to fix the oblique spring. The oblique spring is made by rolling an elastic sheet, and a plurality of hollow holes are opened on the elastic sheet.

[0014] Furthermore, the locking portion includes a fixing column and a convex column, a boss is formed between the fixing column and the convex column, an external thread is opened on the left side of the outer surface of the convex column, and an installation groove is opened on the right side of the outer surface of the convex column, and a sealing ring is installed in the installation groove. The locking cap is arranged to rotate in this way. At this time, the locking cap moves to the right and squeezes the locking sleeve, and the left end of the locking sleeve contracts inward to fix and limit the aluminum conductor cable, and at the same time, it is sealed by the sealing ring to prevent external dust from entering the interior of the aluminum terminal.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. When the utility model is used, the aluminum conductor cable is inserted into the aluminum terminal, and then the locking cap is rotated to fix the aluminum conductor cable. At the same time, it is sealed by the sealing ring to prevent external dust from entering the interior of the aluminum terminal, ensure that the locking cap does not rotate during vibration, and ensure the tightness of the connection with the aluminum conductor cable, so that the operation of the terminal is more convenient and the loose cable is avoided.

[0018] 2. Since one end of the conductive core is made of aluminum and the other end is made of copper, the copper terminal is plugged into the copper part of the socket, and the aluminum terminal is plugged into the aluminum part of the socket, so that copper and aluminum can be connected together, avoiding redox reactions in the contact area, and will not corrode the male terminal of the metal aluminum, making the product safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the plug terminal of the connector;

[0020] Figure 2 It is a schematic diagram of the front cross-sectional structure of the plug terminal of the connector;

[0021] Figure 3 For the plug terminal of the connector Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 It is a schematic diagram of the exploded structure of the plug terminal of the connector;

[0023] Figure 5 It is a structural schematic diagram of a locking sleeve of a plug terminal of a connector;

[0024] Figure 6 It is a schematic diagram of the structure in which the conductive core of the plug terminal of the connector is a copper-aluminum transition plate;

[0025] Figure 7 It is a schematic diagram of the structure of the oblique spring of the plug terminal of the connector;

[0026] Figure 8 A schematic diagram of the structure in which the conductive core of the plug terminal of the connector is a copper-aluminum composite plate;

[0027] Fig. 9 It is a schematic diagram of the cross-sectional structure of the plug terminal of the connector;

[0028] Fig.10 For the plug terminal of the connector Fig. 9 Schematic diagram of the enlarged structure at point B in the middle.

[0029] The markings in the accompanying drawings are: 1. insulating shell; 2. conductive core; 3. copper terminal; 4. connecting part; 5. aluminum terminal; 6. oblique spring; 7. quick-connect assembly; 8. plug; 9. sealing ring; 101. plug-in part; 102. elbow part; 103. locking part; 104. external thread; 601. hollow hole; 701. locking cap; 702. locking sleeve; 703. long hole; 704. protrusion; 705. convex ring; 706. sleeve; 707. step groove; 1031. fixing column; 1032. convex column; 1033. boss. DETAILED DESCRIPTION

[0030] This specific embodiment is a plug terminal of a connector, and its structural schematic diagram is as follows Figure 1-Figure 10 As shown, the plug terminal includes an insulating shell 1 and a conductive core 2, the conductive core 2 is arranged inside the insulating shell 1, the conductive core 2 includes a copper terminal 3, a connecting part 4 and an aluminum terminal 5, one end of the connecting part 4 is fixedly connected to the copper terminal 3, and the other end of the connecting part 4 is fixedly connected to the aluminum terminal 5. The copper terminal 3 is made by a stamping and rolling process, and an inclined spring 6 is installed inside the copper terminal 3. A quick-connect assembly 7 is provided at one end of the insulating shell 1.

[0031] like Figure 1 , 2 and Figure 6 As shown, in this embodiment, the conductive core 2 is a copper-aluminum transition plate, and the aluminum terminal 5 is made by a stamping and rounding process.

[0032] In this way, one end of the conductive core 2 is made of aluminum and the other end is made of copper. After both ends are rolled into terminals, the inside is made of aluminum and copper respectively. When in use, the copper terminal is plugged into the copper part of the socket, and the aluminum terminal is plugged into the aluminum part of the socket, thereby connecting copper and aluminum together.

[0033] like Figure 1 , 2 and Figure 7 As shown, in this embodiment, the conductive core 2 is a copper-aluminum composite plate, and the aluminum terminal 5 is made by a reverse stamping and encapsulation process.

[0034] In this way, the lower side of the conductive core 2 is made of aluminum, the upper side is made of copper, one end is rolled into a terminal and the inside is made of copper, and the other end is rolled into a terminal in the opposite direction and the inside is made of aluminum. When in use, the copper terminal is plugged into the copper part of the socket, and the aluminum terminal is plugged into the aluminum part of the socket, thereby connecting copper and aluminum together.

[0035] In this embodiment, the aluminum terminal 5 is one of a circular hole, a U-shaped hole or a V-shaped hole.

[0036] This arrangement makes processing more convenient and thus can be used for crimping aluminum conductor cables or welding aluminum conductors.

[0037] like Figure 1-4As shown, in this embodiment, the insulating shell 1 includes a plug-in portion 101, a bent tube portion 102 and a locking portion 103, one end of the bent tube portion 102 is fixedly connected to the locking portion 103, and the other end of the bent tube portion 102 is fixedly connected to the plug-in portion 101, the copper terminal 3 is located inside the plug-in portion 101, and the aluminum terminal 5 is located inside the locking portion 103. The quick-connect assembly 7 includes a locking cap 701, a locking sleeve 702 and a sleeve 706. The outer surface of the locking portion 103 is provided with an external thread 104 and is threadedly connected to the locking cap 701. One end of the sleeve 706 is sleeved on the outer surface of the aluminum terminal 5 and is provided with a step groove 707. The locking sleeve 702 is sleeved on the outer surface of the sleeve 706 and is located inside the locking cap 701. The locking sleeve 702 cooperates with the locking cap 701 to lock and fix the cable.

[0038] In this way, the aluminum conductor cable is inserted into the aluminum terminal, and then the locking cap 701 is rotated. At this time, the locking cap 701 moves to the right and squeezes the locking sleeve 702. The left end of the locking sleeve 702 shrinks inward to fix the aluminum conductor cable.

[0039] like Figure 1-3 As shown, in this embodiment, the locking sleeve 702 is cylindrical, one end of the locking sleeve 702 is provided with a plurality of long holes 703 and a protrusion 704 is fixedly connected inside, and the left inner wall of the locking cap 701 is fixedly connected with a protruding ring 705 corresponding to the left end of the locking sleeve 702.

[0040] In this way, when the locking cap 701 moves to the right and squeezes the locking sleeve 702, the left end of the locking sleeve 702 can be more easily retracted inwards, and the protrusion 704 can be pressed more tightly against the aluminum conductor cable.

[0041] like Figure 1 and Figure 4 As shown, in this embodiment, a plug 8 is installed on the upper surface of the plug-in portion 101, and the plug 8 is used to fix the oblique spring 6. The oblique spring 6 is made by rolling an elastic sheet, and a plurality of hollow holes 601 are opened on the elastic sheet.

[0042] The inclined spring 6 is arranged in this way to have a certain elasticity, and the copper terminal 3 and the copper part on the socket are more tightly inserted to avoid falling off.

[0043] like Figure 1-4 As shown, in this embodiment, the locking portion 103 includes a fixing column 1031 and a convex column 1032, a boss 1033 is formed between the fixing column 1031 and the convex column 1032, the external thread 104 is opened on the left side of the outer surface of the convex column 1032, and an installation groove is opened on the right side of the outer surface of the convex column 1032, and a sealing ring 9 is installed in the installation groove.

[0044] The locking cap 701 is rotated in this way, and the locking cap 701 moves to the right and squeezes the locking sleeve 702. The left end of the locking sleeve 702 shrinks inward to fix the aluminum conductor cable in place, and is sealed by the sealing ring 9 to prevent external dust from entering the aluminum terminal 5.

[0045] The technical solution provided by the utility model is to insert the aluminum conductor cable into the aluminum terminal, and then rotate the locking cap 701, at which time the locking cap 701 moves to the right and squeezes the locking sleeve 702. Since one end of the locking sleeve 702 is provided with a plurality of long holes 703 and a protrusion 704 is fixedly connected inside, it is easier for the left end of the locking sleeve 702 to contract inward, so that the protrusion 704 at the left end of the locking sleeve 702 contracts inward to fix the aluminum conductor cable, and seals through the sealing ring 9 to prevent external dust from entering the aluminum terminal 5. The utility model ensures that the locking cap 701 will not rotate, and ensures the tightness of the connection with the aluminum conductor cable, so that the operation of the terminal is more convenient and the loose cable is avoided. At the same time, since one end of the conductive core 2 is made of aluminum and the other end is made of copper, when in use, the copper terminal is plugged into the copper part of the socket, and the aluminum terminal is plugged into the aluminum part of the socket, so that copper and aluminum can be connected together, and oxidation-reduction reaction in the contact area is avoided, and the male terminal of the metal aluminum material will not be corroded, and the product is safer to use.

[0046] All technical features in this embodiment can be freely combined according to actual needs.

[0047] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A plug terminal of a connector, characterized in that: The plug terminal comprises an insulating shell (1) and a conductive core (2), wherein the conductive core (2) is arranged inside the insulating shell (1), the conductive core (2) comprises a copper terminal (3), a connecting portion (4) and an aluminum terminal (5), one end of the connecting portion (4) is fixedly connected to the copper terminal (3), and the other end of the connecting portion (4) is fixedly connected to the aluminum terminal (5), the copper terminal (3) is made by a stamping and rolling process, an inclined spring (6) is installed inside the copper terminal (3), and a quick-connect assembly (7) is arranged at one end of the insulating shell (1).

2. A plug terminal of a connector according to claim 1, characterized in that: The conductive core (2) is a copper-aluminum transition plate, and the aluminum terminal (5) is made by a stamping and rounding process.

3. A plug terminal of a connector according to claim 1, characterized in that: The conductive core (2) is a copper-aluminum composite plate, and the aluminum terminal (5) is made by a reverse stamping and encapsulation process.

4. A plug terminal of a connector according to claim 3, characterized in that: The aluminum terminal (5) is one of a circular hole, a U-shaped hole or a V-shaped hole.

5. The plug terminal of a connector according to claim 1, characterized in that: The insulating shell (1) comprises a plug-in portion (101), a curved tube portion (102) and a locking portion (103); one end of the curved tube portion (102) is fixedly connected to the locking portion (103); the other end of the curved tube portion (102) is fixedly connected to the plug-in portion (101); the copper terminal (3) is located inside the plug-in portion (101); the aluminum terminal (5) is located inside the locking portion (103); the quick-connect assembly (7) comprises a locking cap (701), a locking sleeve ( The locking portion (103) is provided with an external thread (104) on its outer surface and is threadedly connected to the locking cap (701). One end of the sleeve (706) is sleeved on the outer surface of the aluminum terminal (5) and is provided with a step groove (707). The locking sleeve (702) is sleeved on the outer surface of the sleeve (706) and is located inside the locking cap (701). The locking sleeve (702) cooperates with the locking cap (701) to lock and fix the cable.

6. A plug terminal of a connector according to claim 5, characterized in that: The locking sleeve (702) is cylindrical, one end of the locking sleeve (702) is provided with a plurality of long holes (703) and a protrusion (704) is fixedly connected inside, and the left inner wall of the locking cap (701) is fixedly connected with a protruding ring (705) corresponding to the left end of the locking sleeve (702).

7. A plug terminal of a connector according to claim 5, characterized in that: A plug (8) is installed on the upper surface of the plug-in portion (101), and the plug (8) is used to fix the oblique spring (6). The oblique spring (6) is made by rolling an elastic sheet, and a plurality of hollow holes (601) are opened on the elastic sheet.

8. The plug terminal of a connector according to claim 5, characterized in that: The locking portion (103) comprises a fixing column (1031) and a convex column (1032), a boss (1033) is formed between the fixing column (1031) and the convex column (1032), the external thread (104) is provided on the left side of the outer surface of the convex column (1032), and a mounting groove is provided on the right side of the outer surface of the convex column (1032), and a sealing ring (9) is installed in the mounting groove.