An oxidation and corrosion resistant connector terminal

Abstract

The utility model relates to terminal technical field, especially a kind of connector terminal of anti-oxidation rust, including plastic shell, the inside of plastic shell is provided with two symmetrical arc spring, two the arc spring is fixedly connected with connecting piece between, the top of plastic shell is slidably connected with pressure block, the bottom surface of pressure block and the top surface of connecting piece are inlaid. The utility model has the advantages that: the rubber sleeve between the assembly frame in frame and control panel is contracted, and the gap of transmission plate and frame is blocked;Meanwhile, the blocking frame is threadedly connected with the limiting sleeve, the sealing ring is closely attached to the wire protection sleeve, and the outside medium is blocked from invading. Rubber sleeve effectively blocks the gap between transmission plate and frame, sealing ring seals the contact part of wire and limiting sleeve, cooperates with the inlaying of blocking frame and blocking frame, forms multiple sealing structure, reduces the opportunity of moisture, corrosive gas through gap contact arc spring, significantly reduces the risk of oxidation rust, and guarantees that terminal is long-term stable conduction.

Description

Technical Field

[0001] This utility model relates to the field of terminal technology, and in particular to a connector terminal resistant to oxidation and corrosion. Background Technology

[0002] Connector terminals are core components in electronic connection systems that enable electrical conduction. They can be broadly defined as: metal components made of conductive materials (usually copper alloys, brass, etc.) that transmit current or signals in a circuit through contact with mating terminals or conductors. Specifically, connector terminals come in various structures, commonly including pin-type, surface-mount, and fork-type terminals. They can be designed as male or female terminals according to connection requirements and are connected to wires, PCBs, or other electronic components through methods such as plugging, crimping, and soldering.

[0003] Currently, most connector terminals are installed inside plastic housings using a snap-fit ​​method: the terminals are secured to the housing by their own elastic claws or barbs engaging with slots in the housing. While this method allows for quick assembly, it inevitably leaves tiny gaps between the terminals and the plastic housing. Because the plastic housing itself has limited sealing properties, and the snap-fit ​​structure cannot completely isolate the external environment, moisture, oxygen, dust, and corrosive gases in the air can easily penetrate the terminal surface through these gaps. Under the influence of these corrosive media, the metal material of the terminals is highly susceptible to oxidation, forming an oxide layer or rust. These oxidation products can increase the terminal contact resistance, even causing poor contact, and in severe cases, leading to circuit breaks, signal distortion, or equipment malfunction. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a connector terminal that is resistant to oxidation and corrosion, so as to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of this utility model provides an anti-oxidation and corrosion connector terminal, comprising a plastic shell, two symmetrically arranged arc-shaped springs inside the plastic shell, a connecting piece fixedly connected between the two arc-shaped springs, a pressure block slidably connected to the top of the plastic shell, the bottom surface of the pressure block abutting the top surface of the connecting piece, a locking bolt rotatably connected inside the pressure block, the threaded portion of the locking bolt penetrating the connecting piece and threadedly connected to the plastic shell, elastic pressure plates fixedly connected to both the front and rear sides of the pressure block, two symmetrically arranged transmission plates fixedly connected to the bottom surface of each elastic pressure plate, several frames fixedly connected to the top of the plastic shell, several transmission plates respectively located on the inner walls of several frames, a control plate fixedly connected to the bottom end of each transmission plate, the bottom surface of the control plate abutting the top of the arc-shaped springs, an assembly frame glued to the inner wall of each frame, and a rubber sleeve fixedly connected between the assembly frame and the control plate.

[0007] Preferably, in any of the above embodiments, a sealing frame is bonded to both the front and rear ends of the plastic shell, and a limiting sleeve is threaded to the side of each sealing frame away from the plastic shell. A plurality of linear array sealing rings are fixedly connected to the inner wall of the limiting sleeve, and the inner wall of the sealing rings is in contact with the outer surface of the wire protection sleeve. The two limiting sleeves correspond to two arc-shaped spring pieces respectively.

[0008] Preferably, in any of the above solutions, two symmetrically arranged blocking frames are fixedly connected to the outer surface of the plastic shell, and the two blocking frames are respectively attached to the side of the two blocking frames near the pressure block.

[0009] Preferably, in any of the above embodiments, a pad is fixedly connected to the inner wall of the plastic shell, the bottom surface of the connecting piece is in contact with the top surface of the pad, a threaded hole is provided on the top surface of the pad, the screw of the locking bolt passes through the connecting piece and is threadedly connected to the pad through the threaded hole, and the pad and the plastic shell are integrally formed.

[0010] Preferably, in any of the above embodiments, the top surface of the connecting piece is provided with a clearance hole, and the screw portion of the locking bolt is located inside the clearance hole.

[0011] Preferably, in any of the above embodiments, the top surface of the pad is fixedly connected with a plurality of symmetrically arranged positioning pins, and the plurality of positioning pins are all inserted into the top of the connecting piece.

[0012] Preferably, the top surface of the assembly frame is fixedly connected with a number of linearly arrayed protrusions, and the inner wall of the frame is provided with a number of grooves that match the protrusions.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. During installation, place the arc-shaped spring and connecting piece inside the plastic housing. Secure the pressure block to the plastic housing using locking bolts. The pressure block causes the elastic pressure plate to move downwards, causing the transmission plate to push the control plate and compress the arc-shaped spring. The rubber sleeve between the assembly frame and the control plate inside the frame contracts, sealing the gap between the transmission plate and the frame. Simultaneously, the sealing frame and the limit sleeve are threaded together, and the sealing ring is tightly fitted against the wire protection sleeve, preventing external media from entering. The rubber sleeve effectively seals the gap between the transmission plate and the frame, and the sealing ring seals the contact area between the wire and the limit sleeve. Combined with the fit between the sealing frame and the blocking frame, a multi-layered sealing structure is formed, reducing the chance of moisture and corrosive gases contacting the arc-shaped spring through gaps, significantly reducing the risk of oxidation and corrosion, and ensuring long-term stable conductivity of the terminals.

[0014] 2. Select a limiting sleeve with the corresponding inner diameter based on the wire diameter, and thread it onto the sealing frame to ensure the sealing ring fits tightly against the outer surface of the wire protective sleeve. If the wire specification changes, simply unscrew the original limiting sleeve and replace it with a suitable new one to complete the adjustment. The threaded connection design between the limiting sleeve and the sealing frame allows for quick replacement of limiting sleeves with different inner diameters. Combined with the elastic deformation of the sealing ring, it can accommodate various wire specifications without replacing the entire connector housing, improving the versatility and reusability of the device and reducing replacement costs.

[0015] 3. When placing the connecting piece, insert the locating pin into the connecting piece to achieve pre-positioning; tighten the locking bolt, ensuring full contact between the bottom surface of the pressure block and the connecting piece. The threaded part of the locking bolt is fixed to the pad through the threaded hole, making the connecting piece tightly fit against the pad. The connecting piece is locked by the full pressing of the pressure block. Compared with traditional single-point screw locking, this increases the force-bearing area, reduces local pressure, and prevents the anti-rust coating on the surface of the connecting piece from wearing off due to concentrated force. The locating pin ensures accurate installation of the connecting piece, prevents scratches on the coating due to misalignment during locking, and extends the service life of the terminal against oxidation and corrosion. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the assembly of this utility model; Figure 2 This is a cross-sectional structural diagram of the assembly of this utility model; Figure 3 This is an exploded structural diagram of the assembly of this utility model; Figure 4 This is a first-view structural diagram of the plastic shell of this utility model; Figure 5 This is a second-view structural diagram of the plastic shell of this utility model; Figure 6 This is a schematic diagram of the structure of the pressure block of this utility model.

[0017] In the diagram: 1-Plastic shell, 2-Arc-shaped spring, 3-Connecting piece, 4-Pressure block, 5-Locking bolt, 6-Elastic pressure plate, 7-Transmission plate, 8-Frame, 9-Control plate, 10-Assembly frame, 11-Rubber sleeve, 12-Sealing frame, 13-Limit sleeve, 14-Sealing ring, 15-Blocking frame, 16-Pad, 17-Allowing hole, 18-Positioning pin, 19-Protrusion, 20-Groove, 21-Threaded hole. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0019] like Figures 1 to 6 As shown, an anti-oxidation and corrosion connector terminal includes a plastic shell 1. Inside the plastic shell 1, two symmetrically arranged arc-shaped springs 2 are arranged. A connecting piece 3 is fixedly connected between the two arc-shaped springs 2. A pressure block 4 is slidably connected to the top of the plastic shell 1. The bottom surface of the pressure block 4 is in contact with the top surface of the connecting piece 3. A locking bolt 5 is rotatably connected inside the pressure block 4. The threaded part of the locking bolt 5 passes through the connecting piece 3 and is threadedly connected to the plastic shell 1. Elastic pressure plates 6 are fixedly connected to both the front and rear sides of the pressure block 4. Two symmetrically arranged transmission plates 7 are fixedly connected to the bottom surface of each elastic pressure plate 6. Several frames 8 are fixedly connected to the top of the plastic shell 1. Several transmission plates 7 are located on the inner walls of several frames 8. A control plate 9 is fixedly connected to the bottom end of each transmission plate 7. The bottom surface of the control plate 9 is in contact with the top of the arc-shaped springs 2. An assembly frame 10 is glued to the inner wall of each frame 8. A rubber sleeve 11 is fixedly connected between the assembly frame 10 and the control plate 9.

[0020] As an optional technical solution of this utility model, a sealing frame 12 is glued to both ends of the plastic shell 1. A limiting sleeve 13 is threadedly connected to the side of each sealing frame 12 away from the plastic shell 1. Several linear array sealing rings 14 are fixedly connected to the inner wall of the limiting sleeve 13. The inner wall of the sealing ring 14 is in contact with the outer surface of the wire protection sleeve. The two limiting sleeves 13 correspond to the two arc-shaped springs 2 respectively. The sealing frame 12 and the limiting sleeve 13 are threadedly connected, which facilitates quick disassembly and assembly of the limiting sleeve 13. The sealing rings 14 inside the limiting sleeve 13 can fit tightly against the wire protection sleeve, effectively preventing moisture, dust and other corrosive media from entering the plastic shell 1 from the wire entry point. At the same time, the two limiting sleeves 13 correspond to the two arc-shaped springs 2, ensuring the sealing of the contact area between the wire and the terminal, reducing the oxidation and corrosion of the arc-shaped springs 2 caused by external corrosion, and improving the service life of the terminal.

[0021] As an optional technical solution of this utility model, two symmetrically arranged blocking frames 15 are fixedly connected to the outer surface of the plastic shell 1. The two sealing frames 12 are respectively attached to the two blocking frames 15 on the side near the pressure block 4. The blocking frames 15 on the outer surface of the plastic shell 1 are attached to the sealing frames 12, which can limit and fix the sealing frames 12, prevent the sealing frames 12 from shifting or loosening during long-term use or when subjected to external force, ensure the stability of the sealing structure between the sealing frames 12 and the limiting sleeve 13, avoid sealing failure caused by the displacement of the sealing frames 12, further enhance the overall sealing performance of the plastic shell 1, and protect the internal arc-shaped spring 2 from corrosion.

[0022] As an optional technical solution of this utility model, a pad 16 is fixedly connected to the inner wall of the plastic shell 1. The bottom surface of the connecting piece 3 is in contact with the top surface of the pad 16. A threaded hole 21 is opened on the top surface of the pad 16. The screw part of the locking bolt 5 passes through the connecting piece 3 and is threadedly connected to the pad 16 through the threaded hole 21. The pad 16 and the plastic shell 1 are integrally formed. The pad 16 on the inner wall of the plastic shell 1 is in contact with the connecting piece 3, which increases the force-bearing area of ​​the connecting piece 3. With the locking bolt 5 threadedly connected to the pad 16, the connecting piece 3 is more firmly fixed and the connecting piece 3 is prevented from loosening. The pad 16 and the plastic shell 1 are integrally formed, which improves the structural strength, prevents the pad 16 from deforming when the locking bolt 5 is under force, and at the same time reduces the gap between the connecting piece 3 and the plastic shell 1, reduces the possibility of corrosive media intrusion, and protects the anti-rust coating of the connecting piece 3.

[0023] As an optional technical solution of this utility model, the top surface of the connecting piece 3 is provided with a clearance hole 17, and the screw part of the locking bolt 5 is located inside the clearance hole 17. The clearance hole 17 on the connecting piece 3 provides a space for the screw part of the locking bolt 5, avoiding direct friction between the locking bolt 5 and the connecting piece 3, preventing the anti-rust coating on the surface of the connecting piece 3 from being worn, and ensuring that the locking bolt 5 can pass smoothly through the connecting piece 3 and connect with the pad 16, so that the pressure block 4 presses the connecting piece 3 more evenly, enhances the fixing stability of the connecting piece 3, and reduces the risk of oxidation caused by poor contact.

[0024] As an optional technical solution of this utility model, the top surface of the pad 16 is fixedly connected with a number of symmetrically arranged positioning pins 18. The positioning pins 18 are all inserted into the top of the connecting piece 3. The positioning pins 18 on the pad 16 are inserted into the top of the connecting piece 3, which can accurately position the installation position of the connecting piece 3, prevent the connecting piece 3 from shifting during installation or use, ensure the precise fit between the connecting piece 3 and the arc-shaped spring 2, and avoid poor contact caused by position deviation. At the same time, the positioning pins 18 help to share the force of the locking bolt 5, reduce the shaking of the connecting piece 3, and protect its surface anti-rust coating from damage.

[0025] As an optional technical solution of this utility model, the top surface of the assembly frame 10 is fixedly connected with a number of linear array protrusions 19, and the inner wall of the frame 8 is provided with a number of grooves 20 that are adapted to the protrusions 19. The protrusions 19 on the assembly frame 10 and the grooves 20 on the inner wall of the frame 8 cooperate to firmly fix the assembly frame 10 in the frame 8, prevent the assembly frame 10 from loosening or shifting, ensure that the rubber sleeve 11 is always in the correct position, and effectively seal the gap between the transmission plate 7 and the frame 8. This concave-convex fit structure also enhances the connection and sealing of the assembly frame 10 and the frame 8, reduces the possibility of corrosive media entering through the gap between the two, and further improves the anti-oxidation capability of the device.

[0026] An antioxidant and corrosion-resistant connector terminal, working principle as follows: 1): During installation, place the arc-shaped spring piece 2 and the connecting piece 3 inside the plastic shell 1, and fix the pressure block 4 to the plastic shell 1 by locking bolt 5.

[0027] 2): The pressure block 4 drives the elastic pressure plate 6 to move down, causing the transmission plate 7 to push the control plate 9 to squeeze the arc-shaped spring 2; the rubber sleeve 11 between the assembly frame 10 and the control plate 9 in the frame 8 contracts, sealing the gap between the transmission plate 7 and the frame 8.

[0028] 3): The sealing frame 12 is threadedly connected to the limiting sleeve 13, and the sealing ring 14 is tightly attached to the wire protection sleeve to prevent the intrusion of external media. The rubber sleeve 11 effectively seals the gap between the transmission plate 7 and the frame 8, and the sealing ring 14 seals the contact area between the wire and the limiting sleeve 13.

[0029] In summary, during installation, the arc-shaped spring 2 and the connecting piece 3 of this anti-oxidation and corrosion connector terminal are placed inside the plastic housing 1. The pressure block 4 is fixed to the plastic housing 1 by the locking bolt 5. The pressure block 4 drives the elastic pressure plate 6 to move down, so that the transmission plate 7 pushes the control plate 9 to squeeze the arc-shaped spring 2. The rubber sleeve 11 between the assembly frame 10 and the control plate 9 in the frame 8 contracts, sealing the gap between the transmission plate 7 and the frame 8. At the same time, the sealing frame 12 is threadedly connected to the limiting sleeve 13, and the sealing ring 14 is tightly attached to the wire protection sleeve to prevent the intrusion of external media. The rubber sleeve 11 effectively seals the gap between the transmission plate 7 and the frame 8, and the sealing ring 14 seals the contact area between the wire and the limiting sleeve 13. Together with the fitting of the sealing frame 12 and the blocking frame 15, a multi-layer sealing structure is formed, reducing the chance of moisture and corrosive gases contacting the arc-shaped spring 2 through the gap, significantly reducing the risk of oxidation and corrosion, and ensuring long-term stable conductivity of the terminal. The limiting sleeve 13 with the corresponding inner diameter is selected according to the wire diameter and threadedly connected to the sealing frame 12, so that the sealing ring 14 fits tightly against the outer surface of the wire protective sleeve. If the wire specification is changed, simply unscrew the original limiting sleeve 13 and replace it with a new matching limiting sleeve 13 to complete the adjustment. The threaded connection design between the limiting sleeve 13 and the sealing frame 12 allows for quick replacement of limiting sleeves 13 with different inner diameters. Combined with the elastic deformation of the sealing ring 14, it can adapt to various wire specifications without replacing the entire connector housing, improving the device's versatility and reusability, and reducing replacement costs. When placing the connecting piece 3, the positioning pin 18 inserts into the connecting piece 3 to achieve pre-positioning. Tightening the locking bolt 5 ensures full contact between the bottom surface of the pressure block 4 and the connecting piece 3. The threaded portion of the locking bolt 5 is fixed to the pad 16 through the threaded hole 21, ensuring the connecting piece 3 fits tightly against the pad 16. The connecting piece 3 is locked by the full pressing of the pressure block 4. Compared to traditional single-point screw locking, this increases the force-bearing area, reduces local pressure, and prevents the anti-rust plating on the surface of the connecting piece 3 from wearing off due to concentrated force. The positioning pin 18 ensures accurate installation of the connecting piece 3, preventing plating scratches caused by misalignment during locking and extending the terminal's anti-oxidation and corrosion service life.

Claims

1. A connector terminal resistant to oxidation and corrosion, characterized in that: Includes a plastic shell (1), inside which are two symmetrically arranged arc-shaped spring pieces (2), and a connecting piece (3) is fixedly connected between the two arc-shaped spring pieces (2). A pressure block (4) is slidably connected to the top of the plastic shell (1), the bottom surface of the pressure block (4) is in contact with the top surface of the connecting piece (3), and a locking bolt (5) is rotatably connected inside the pressure block (4). The threaded part of the locking bolt (5) passes through the connecting piece (3) and is threadedly connected to the plastic shell (1). Elastic pressure plates (6) are fixedly connected to both the front and rear sides of the pressure block (4). Two symmetrically arranged transmission plates (7) are fixedly connected to the bottom surface of the elastic pressure plate (6). Several frames (8) are fixedly connected to the top of the plastic shell (1). Several transmission plates (7) are located on the inner walls of several frames (8). A control plate (9) is fixedly connected to the bottom end of each transmission plate (7). The bottom surface of the control plate (9) is in contact with the top of the arc-shaped spring (2). An assembly frame (10) is glued to the inner wall of each frame (8). A rubber sleeve (11) is fixedly connected between the assembly frame (10) and the control plate (9).

2. The connector terminal resistant to oxidation and corrosion according to claim 1, characterized in that: A sealing frame (12) is glued to both the front and rear ends of the plastic shell (1). Each sealing frame (12) is threaded with a limiting sleeve (13) on the side away from the plastic shell (1). Several linear array sealing rings (14) are fixedly connected to the inner wall of the limiting sleeve (13). The inner wall of the sealing ring (14) is in contact with the outer surface of the wire protection sleeve. The two limiting sleeves (13) correspond to two arc-shaped spring pieces (2) respectively.

3. The connector terminal resistant to oxidation and corrosion according to claim 2, characterized in that: Two symmetrically arranged blocking frames (15) are fixedly connected to the outer surface of the plastic shell (1), and the two blocking frames (12) are respectively attached to the two blocking frames (15) on the side near the pressure block (4).

4. The connector terminal resistant to oxidation and corrosion according to claim 3, characterized in that: The inner wall of the plastic shell (1) is fixedly connected to a pad (16). The bottom surface of the connecting piece (3) is in contact with the top surface of the pad (16). The top surface of the pad (16) is provided with a threaded hole (21). The screw part of the locking bolt (5) passes through the connecting piece (3) and is threadedly connected to the pad (16) through the threaded hole (21). The pad (16) and the plastic shell (1) are integrally formed.

5. The connector terminal resistant to oxidation and corrosion according to claim 4, characterized in that: The top surface of the connecting piece (3) is provided with a clearance hole (17), and the screw part of the locking bolt (5) is located inside the clearance hole (17).

6. The connector terminal resistant to oxidation and corrosion according to claim 5, characterized in that: The top surface of the pad (16) is fixedly connected with a number of symmetrically arranged positioning pins (18), and the number of positioning pins (18) are all inserted into the top of the connecting piece (3).

7. A connector terminal resistant to oxidation and corrosion according to claim 6, characterized in that: The top surface of the assembly frame (10) is fixedly connected with a number of linear array protrusions (19), and the inner wall of the frame (8) is provided with a number of grooves (20) that are adapted to the protrusions (19).

Images