high current terminal

Abstract

The utility model provides a kind of large current terminal, including vertically extending main body, the one end of main body is provided with first wire pressing foot and second wire pressing foot, the other end of main body is provided with the socket of square tube, the socket is provided with abutting spring, the abutting spring includes electric contact point, the electric contact point is arranged at abutting spring near middle part, and the both ends of abutting spring longitudinal direction are inclined to the direction of the inner wall below socket and extend to the place where electric contact point is arranged. In view of the deficiency of prior art, the utility model provides a kind of large current terminal, which has stronger pressure-bearing capacity and stronger connection stability.

Description

Technical Field

[0001] This utility model relates to the field of connector terminals, and in particular to a high-current terminal. Background Technology

[0002] As a core unit ensuring the normal operation of the engine, the reliability of the automotive cooling system directly affects the vehicle's power performance, energy efficiency, and driving safety. The automotive cooling fan, a key component of the cooling system, must operate stably under extreme ambient temperatures ranging from -40℃ to 125℃, high-frequency vibrations of 10-2000Hz, and complex electromagnetic interference. High-current terminals, as the core interface element for the cooling fan circuit connection, bear the dual functions of power transmission and signal communication. Their structural design and performance play a crucial role in the operational stability of the cooling system. However, existing high-current terminals mostly employ surface contact or line contact methods. To ensure adequate contact resistance, the spring preload must be increased. This not only increases the difficulty of manual assembly but also places higher demands on automated assembly equipment. Furthermore, surface / line contact methods require a higher degree of surface flatness in the connectors. Even minor scratches or oxide layers on the connector surface can easily lead to poor contact, manifesting as abnormal cooling fan start / stop and speed fluctuations. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a high-current terminal with stronger pressure resistance and greater connection stability.

[0004] To achieve the above objectives, this utility model provides a high-current terminal, comprising a vertically extending main body, a first pressure pin and a second pressure pin at one end of the main body, and a square tube-shaped slot at the other end of the main body. An abutment spring is provided in the slot, and the abutment spring includes an electrical contact point located near the center of the abutment spring. Both ends of the abutment spring extend at an incline towards the inner wall of the slot to the electrical contact point. The advantages of adopting the above technical solution are: First, the square tube slot structure at the other end of the main body improves the overall mechanical strength and pressure resistance, ensuring that the terminal is stably installed and not easily deformed in the high-frequency vibration environment of the car cooling fan. Then, electrical contact points are set on the abutment spring to form a point contact fit. The longitudinal ends of the abutment spring extend inclined towards the inner wall of the slot to the contact point, allowing the abutment spring to provide stable elastic pressure. In addition, the structure of the abutment spring can also provide a certain guidance, further improving the convenience of insertion and removal and the contact stability.

[0005] The present invention can be further configured such that: ears are provided on both sides of the abutting spring in the horizontal direction, and the ears are bent and extended toward the inner wall above the slot.

[0006] By further designing the ear part, it can provide auxiliary limiting and support for the abutment spring, enabling the abutment spring to share the force during the insertion and removal process, maintain its shape stability during the insertion and removal process, and avoid deformation of the spring due to uneven local force.

[0007] The present invention can be further configured such that: the slot is formed by bending the extensions on both sides of the other end of the main body towards each other, and the extensions are provided with openings at the bend corners, and the two ends of the abutting spring are provided with locking feet that extend into the openings.

[0008] By further designing the clips to extend into the opening, the spring and slot are positioned and engaged without the need for additional fasteners. This ensures stability and facilitates installation. The slot is formed by the extension bending towards each other, and with the opening at the corner, the overall rigidity and pressure-bearing capacity of the slot are guaranteed. The close fit between the clips and the opening also distributes the force on the spring, reducing stress concentration at the contact point. At the same time, the spring is limited by the clips and the opening, ensuring that the electrical contact point is always in the preset position, guaranteeing the contact effect after the plug is inserted.

[0009] The present invention can be further configured such that: a connecting part is provided at both ends of the longitudinal direction of the abutting spring, the connecting parts at both ends of the abutting spring extend longitudinally toward each other, and the connecting parts are spaced apart from the abutting spring, and the locking foot is provided at the end of the connecting part.

[0010] By further designing the connection part and the spring body, an elastic buffer space is formed by the spacing between them. This reduces stress transmission during plug insertion / removal and vibration, and also ensures the elasticity of the corresponding electrical contact point of the spring through the spacing.

[0011] The present invention can be further configured such that: a boss for abutting and engaging with the locking foot is provided at one end of the slot sidewall corresponding to the opening, and arc-shaped grooves are provided on both sides of the boss.

[0012] With further design, the arc-shaped grooves on both sides of the boss can disperse the stress concentration at the connection between the boss and the pins and the side walls of the slot, avoiding material fatigue cracking caused by long-term vibration or insertion and removal stress, and ensuring the service life of the product.

[0013] The present invention can be further configured such that the other end of the opening is arc-shaped.

[0014] By further designing the opening, the edge serves as the position for fixing the spring clip, which is also a stress point during insertion and removal. By setting the other end of the opening into an arc shape, the stress concentration at this point can be eliminated to some extent. Furthermore, the arc shape facilitates mold processing and optimizes production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1 Sectional view at point AA; Figure 3 This is a schematic diagram of the structure of the abutment spring in an embodiment of this utility model; Figure 4 This is a schematic diagram of the opening in an embodiment of the present invention; The components include: main body 1; first pressure pin 11; second pressure pin 12; slot 13; extension 14; opening 15; boss 151; groove 152; abutment spring 2; electrical contact point 21; ear 22; locking pin 23; and connecting part 24. Detailed Implementation

[0016] An embodiment of this utility model of a high-current terminal is shown in the example below. Figure 1-4 As shown: It includes a vertically extending main body 1. One end of the main body 1 is provided with a first pressure foot 11 and a second pressure foot 12. The other end of the main body 1 is provided with a square tube-shaped slot 13. The slot 13 is provided with an abutment spring 2. The abutment spring 2 includes an electrical contact point 21. The electrical contact point 21 is located near the middle of the abutment spring 2, and the two ends of the abutment spring 2 extend at an incline towards the inner wall of the slot 13 to the electrical contact point 21. The abutting spring 2 is provided with ears 22 on both sides in the horizontal direction, and the ears 22 are bent and extended towards the inner wall above the slot 13.

[0017] The slot 13 is formed by bending the extensions 14 on both sides of the other end of the main body 1 towards each other, and the extensions 14 are provided with openings 15 at the bend corners. The two ends of the abutting spring 2 are provided with locking feet 23 that extend into the openings 15.

[0018] The abutting spring 2 is provided with connecting parts 24 at both ends in the longitudinal direction. The connecting parts 24 at both ends of the abutting spring 2 extend longitudinally towards each other and are spaced apart from the abutting spring 2. The locking foot 23 is provided at the end of the connecting part 24.

[0019] The opening 15 is provided at one end of the side wall of the slot 13, with a boss 151 for abutting and engaging with the locking foot 23, and arc-shaped grooves 152 are provided on both sides of the boss 151.

[0020] The other end of the opening 15 is arc-shaped.

[0021] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A high-current terminal, comprising a vertically extending main body, wherein a first pressure pin and a second pressure pin are provided at one end of the main body, characterized in that: At the other end of the main body, there is a square tube-shaped slot. The slot contains an abutment spring. The abutment spring includes an electrical contact point, which is located near the center of the abutment spring. Both ends of the abutment spring extend at an angle towards the inner wall of the slot to the electrical contact point.

2. The high-current terminal according to claim 1, characterized in that: The abutment spring is provided with ears on both sides in the horizontal direction, and the ears are bent and extended towards the inner wall above the slot.

3. The high-current terminal according to claim 1 or 2, characterized in that: The slot is formed by bending the extensions on both sides of the other end of the main body towards each other, and the extensions have openings at the bend corners. The two ends of the abutting spring are provided with locking feet that extend into the openings.

4. The high-current terminal according to claim 3, characterized in that: The abutting spring is provided with connecting parts at both ends in the longitudinal direction. The connecting parts at both ends of the abutting spring extend longitudinally towards each other and are spaced apart from the abutting spring. The locking foot is provided at the end of the connecting part.

5. The high-current terminal according to claim 4, characterized in that: The opening is provided at one end of the slot sidewall for engaging with the locking foot, and the two sides of the opening are provided with arc-shaped grooves.

6. The high-current terminal according to claim 5, characterized in that: The other end of the opening is arc-shaped.

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