Anti-loose and anti-rotation outer electrode and electric connector thereof

Abstract

The utility model relates to a kind of outer electrode and its electric connector of anti-loose anti-rotation, for a kind of outer electrode of anti-loose anti-rotation, including sleeve-like main body, the outside of main body is provided with clamping groove, for the clamping protruding column in the protruding column of insulating shell;Clamping groove extends to the both ends of main body axial direction;Clamping groove is equipped with two or three of circumferential uniform distribution;The radial side of main body is provided with notch;Notch is communicated with the inner chamber of main body, and it is through the both ends of main body axial direction.The protruding column of clamping of clamping groove on main body and insulating shell is connected, reliable circumferential positioning is formed, unintended rotation of outer electrode relative to insulating shell can be effectively prevented during assembly process, and the problem of installation tool skidding, inaccurate positioning is overcome, so that crimping or installation process is fast, accurate, significantly improve assembly efficiency;Meanwhile, electrode surface damage or structural deformation caused by installation torsion is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically an anti-loosening and anti-rotation external electrode and its electrical connector. Background Technology

[0002] In the field of new energy vehicles, electrical connectors are key components for realizing power transmission and distribution, and their performance directly affects the efficiency, safety, and reliability of the vehicle's electrical system. As the core conductive component of the electrical connector, the external electrode plays a crucial role in establishing an electrical connection with the mating connector or terminal. Its structural design and fixing method have a decisive impact on the conductivity, mechanical strength, and long-term stability of the connection system.

[0003] Currently, the external electrodes widely used in the industry are mostly simple cylindrical or sleeve-shaped structures. While the manufacturing process for these traditional structures is relatively mature, they still have several significant drawbacks in practical applications: 1. During the assembly of the outer electrode to the insulating housing, because its outer surface is usually a smooth cylindrical or regularly symmetrical shape, the installation tools (such as crimping pliers or special clamps) are prone to slippage or inaccurate positioning, causing the electrode to rotate unexpectedly during installation. This not only reduces assembly efficiency but may also cause damage to the electrode surface or even structural deformation due to torsional stress, affecting its conductivity.

[0004] 2. Insufficient vibration resistance and mating stability: In the operating environment of new energy vehicles, connectors often face frequent mating operations and continuous mechanical vibration. Traditional external electrodes and insulating shells are mostly fixed by interference fit or simple snap-fit ​​structures, which are prone to loosening under long-term dynamic loads. Once the fixation fails, the contact pressure between the electrode and the mating terminal will decrease, causing increased contact resistance, local overheating, and in severe cases, even connector failure or electrical fire, threatening vehicle safety.

[0005] Therefore, there is an urgent need for a new type of external electrode structure that can effectively solve the above problems, improve installation convenience, vibration resistance and connection reliability, so as to meet the increasingly higher performance requirements of new energy vehicles for electrical connectors. Utility Model Content

[0006] To address the technical problems in the background art, this utility model discloses an anti-loosening and anti-rotation external electrode and its electrical connector.

[0007] This utility model provides an anti-loosening and anti-rotation external electrode, including a sleeve-shaped main body, and a slot is provided on the outside of the main body for locking the protruding post inside the insulating shell; The slots extend to both ends of the main body along its axis; The card slots are set to two or three evenly distributed around the circumference; A notch is provided on one radial side of the main body; The notch connects to the inner cavity of the main body and extends through both ends of the main body along its axial direction.

[0008] Furthermore, the width of the notch is configured such that the end of the main body is in a superior arc shape.

[0009] Furthermore, the notch is located at the center of the adjacent slot and is spaced apart from the adjacent slot.

[0010] Furthermore, the two sides of the notch are parallel and symmetrical, and their center line of symmetry is set as line a; The slots adjacent to the notch are arranged symmetrically with respect to line a.

[0011] Furthermore, the slot is arc-shaped.

[0012] Furthermore, the slot is curved.

[0013] Furthermore, the outer surface of the main body is provided with raised strips; The card slot is located on the raised strip.

[0014] This utility model also provides an electrical connector, including an external electrode that prevents loosening and rotation.

[0015] The beneficial effects of this utility model are: 1. The main body is engaged with the protrusion on the insulating shell through the slot, forming a reliable circumferential positioning. During the assembly process, it can effectively prevent the outer electrode from rotating unexpectedly relative to the insulating shell and overcome the problems of slippage and inaccurate positioning of the installation tool. This makes the crimping or installation process fast and accurate, and significantly improves the assembly efficiency. At the same time, it avoids damage to the electrode surface or structural deformation caused by installation torsion.

[0016] 2. The combination of the slot and the protrusion forms a robust mechanical interlock structure, which can effectively resist the dynamic load caused by continuous mechanical vibration and frequent insertion and removal operations in the operating environment of new energy vehicles, and prevent the fixation from loosening due to long-term vibration.

[0017] 3. The stable connection between the main body and the insulating shell ensures continuous and sufficient contact pressure between the external electrode and the mating terminal, thereby maintaining stable contact resistance and avoiding the risk of local overheating, increased power loss, connector failure, or electrical fire caused by poor contact. This greatly improves the safety and long-term operational reliability of the vehicle's electrical system.

[0018] 4. The notch design also gives the outer electrode a certain degree of radial elasticity. This elastic deformation capability not only helps the outer electrode and the mating terminal to form a tight, low-resistance electrical contact, but also compensates for gaps caused by tolerances or slight wear, maintaining long-term stable contact pressure. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is the left view of this utility model; Figure 2 This is the front view of this utility model; In the picture: 1. Main body; 2. Card slot; 3. Notch; 4. Raised strip. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] Example 1: like Figure 1 and Figure 2 As shown, this utility model discloses an anti-loosening and anti-rotation external electrode, including a sleeve-shaped main body 1. An integrally formed protrusion 4 is provided on the outer side of the main body 1. At least two protrusions 4 are provided, evenly distributed. In this embodiment, three protrusions 4 are provided, extending to both ends of the main body 1 along its axial direction. The end face of the protrusion 4 is arc-shaped, and an arc-shaped groove 2 is formed therein. The groove 2 penetrates both sides of the protrusion 4 along its length direction and engages with the arc-shaped protrusion inside the insulating shell. The provision of the protrusion 4 ensures the structural integrity of the groove 2 while maintaining the structural strength of the main body 1.

[0023] The design of slot 2 offers the following advantages: 1. By engaging with the protrusion on the insulating shell through slot 2 on the main body 1, reliable circumferential positioning is achieved. This effectively prevents unexpected rotation of the outer electrode relative to the insulating shell during assembly and overcomes the problems of slippage and inaccurate positioning of installation tools, making the crimping or installation process fast and accurate, significantly improving assembly efficiency. It also avoids electrode surface damage or structural deformation caused by installation torsion. 2. The cooperation between slot 2 and the protrusion forms a robust mechanical interlock structure, which can effectively resist the dynamic load caused by continuous mechanical vibration and frequent insertion and removal operations in the operating environment of new energy vehicles, preventing loosening due to long-term vibration. 3. The stable connection between the main body 1 and the insulating shell ensures continuous and sufficient contact pressure between the outer electrode and the mating terminal, thereby maintaining stable contact resistance and avoiding the risks of local overheating, increased power loss, connector failure, or even electrical fires caused by poor contact. This greatly improves the safety and long-term operational reliability of the vehicle's electrical system.

[0024] The slot 2 has an arc-shaped design, which increases the contact area between the slot 2 and the protrusion and improves the stability of the connection structure; it also makes the protrusion 4 have a certain elasticity, so as to facilitate the slot 2 and the protrusion to engage.

[0025] The center line of the symmetry of the slot 2 coincides with the center of the main body 1, so that the lever arm from the slot wall of the slot 2 to the center of the main body 1 is equal and symmetrical, so that the slot wall is subjected to uniform force and there will be no one-sided compression or tilting.

[0026] Three slots 2 are evenly distributed on the outer circumference of the main body 1, forming a stable three-point support structure. This uniformly restricts the rotation tendency of the external electrode in all directions, effectively preventing local damage or deformation caused by stress concentration and ensuring the reliability of the connection. In a vibration environment, the three-point fixed structure provides more constraint points than the two-point fixed structure, and can more effectively resist vibration impacts from different directions, preventing the external electrode from fretting or loosening within the insulating shell. If there are two slots 2, the following advantages are available: 1. The two-point fixed structure (with two slots 2) has relatively weak anti-rotation capability when subjected to torque parallel to the line connecting the two points. The uniform distribution of three points provides all-round anti-rotation capability with no obvious weak direction. 2. Under the same material and outer diameter, the structure with three slots 2 can distribute the load more evenly than the structure with two slots 2, resulting in better structural rigidity. 3. The three-point positioning itself has a good self-centering effect, facilitating quick alignment during installation. However, when the number of slots 2 is greater than three, it will increase the installation resistance of the external electrode and increase the installation difficulty.

[0027] A notch 3 is also provided on one radial side of the main body 1. The notch 3 communicates with the inner cavity of the main body 1 and extends through both ends of the main body 1 in the axial direction. The notch 3 makes the end face of the main body 1 have a superior arc shape. The notch 3 also gives the outer electrode a certain degree of radial elasticity. This elastic deformation capability not only helps the outer electrode to form a tight, low-resistance electrical contact with the mating terminal, but also compensates for gaps caused by tolerances or slight wear, maintaining a long-term stable contact pressure.

[0028] The notch 3 is located at the center of the adjacent slot 2 and is spaced apart from the adjacent slot 2 to maintain the structural strength of the protrusion 4 and the structural stability of the slot 2.

[0029] The two sides of the notch 3 are parallel and symmetrical, with their center line of symmetry designated as line a. The slots 2 adjacent to the notch 3 are arranged symmetrically with respect to line a, such that line a coincides with the center of the main body 1. This arrangement ensures that the mass distribution and stress distribution are uniform in the areas on both sides of the notch 3.

[0030] Example 2: This utility model also discloses an electrical connector, including an anti-loosening and anti-rotation external electrode as described in Embodiment 1. With this configuration, the electrical connector's position is more stable, and its performance is also more stable.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An anti-loosening and anti-rotation external electrode, comprising a sleeve-shaped main body (1), characterized in that: The outer side of the main body (1) is provided with a slot (2) for engaging the protruding post inside the insulating shell; The slot (2) extends to both ends of the main body (1) in the axial direction; The card slots (2) are provided as two or three evenly distributed around the circumference; A notch (3) is provided on one radial side of the main body (1); The notch (3) is connected to the inner cavity of the main body (1) and extends through both ends of the main body (1) in the axial direction.

2. The anti-loosening and anti-rotation external electrode according to claim 1, characterized in that: The width of the notch (3) is configured such that the end of the main body (1) is arc-shaped.

3. The anti-loosening and anti-rotation external electrode according to claim 2, characterized in that: The notch (3) is located at the center of the adjacent slot (2) and there is a gap between it and the adjacent slot (2).

4. The anti-loosening and anti-rotation external electrode according to claim 3, characterized in that: The two sides of the notch (3) are parallel and symmetrical, and their center line of symmetry is set as line a; The slots (2) adjacent to the notch (3) are arranged symmetrically with respect to line a.

5. The anti-loosening and anti-rotation external electrode according to claim 1, characterized in that: The slot (2) is arc-shaped.

6. The anti-loosening and anti-rotation external electrode according to claim 5, characterized in that: The slot (2) is arc-shaped.

7. The anti-loosening and anti-rotation external electrode according to claim 6, characterized in that: The outer side of the main body (1) is provided with a protrusion (4); The slot (2) is provided on the protrusion (4).

8. An electrical connector, characterized in that: Includes an anti-loosening and anti-rotation external electrode as described in any one of claims 1-7.

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