Three-dimensional swing-preventing large-current spring terminal

Abstract

This utility model discloses a three-dimensional anti-sway high-current spring terminal, relating to the field of electronic connection accessories, and particularly a high-current anti-sway wiring terminal. It includes an integrally formed spring body and riveting pins. The spring body is integrally bent from an elastic metal material, including a bottom spring, two side springs, and a top spring, with a cavity in the middle to accommodate a male connector. An upper spring piece is cut from the middle of the top spring, extending to the lower part of the rear stamped bevel to form a linkage protrusion. After the male connector is inserted, it lifts the upper spring piece, and the linkage protrusion transmits the force to the top spring, causing the top spring and the upper spring to press the male connector together through a counterforce. This ensures a more secure contact between the male connector and the spring, avoiding safety hazards such as arcing due to poor contact, and enhancing safety performance. It can carry a larger current, enabling it to adapt to the wiring requirements of higher-power electrical appliances, ensuring safer and more stable operation of the appliances.

Description

Technical Field

[0001] This utility model relates to the field of electronic connection accessories, and in particular to a high-current anti-sway terminal block. Background Technology

[0002] Spring-loaded terminals are mainly used in electrical products such as electrical connectors and distribution cabinets. They are widely used in lighting appliances, household appliances, connectors, automotive and motorcycle parts, connectors, wire harnesses, lamp holders, ballasts, lighting fixtures, lamps, electronic instruments, and other products.

[0003] The structure of commercially available spring-loaded terminals mainly consists of a spring for inserting the male prong and a rivet for crimping the wire. After the male prong is inserted into the spring, electrical contact is established. Because the spring has a hollow structure, the male prong may wobble from side to side during insertion, easily becoming loose. This loosening reduces the contact area, leading to current instability when a large current is applied during electrical operation. The small and insufficiently compact contact area cannot withstand high voltage, severely affecting current conduction and impacting the safety and stability of the electrical product.

[0004] To address the aforementioned issues, existing technology employs a spring-loaded terminal block designed to prevent swaying. Upon insertion of the male prong, this block generates a counterforce to prevent lateral swaying, resulting in tighter contact between the male prong and the spring, and enhanced conductivity. However, this technology suffers from the following drawbacks: 1) Insertion of the male prong into the spring only generates a counterforce to prevent lateral swaying, with less vertical pressure, allowing the male prong to sway vertically. This swaying can lead to safety hazards such as arcing due to poor contact; 2) The contact area between the male prong and the spring is small, limiting the flow of current and thus making it unsuitable for wiring higher-power electrical appliances.

[0005] To address the aforementioned shortcomings, the inventor has developed a three-dimensional anti-sway high-current spring-loaded terminal block, which can press the male insert from four sides (top, bottom, left, and right), greatly improving the reliability during high-current flow. Summary of the Invention

[0006] The purpose of this invention is to solve the above defects and provide a three-dimensional anti-sway high-current spring terminal. After the male insert is inserted, it generates a reverse force to prevent the male insert from swaying up and down and left and right, so that the male insert and the spring are in closer contact, the contact area is larger, and the conductivity is better.

[0007] This utility model provides the following technical solution: a three-dimensional anti-sway high-current spring terminal, including an integrally formed spring body and a rivet pin. The spring body is integrally bent from an elastic metal material and includes a bottom spring, two side springs, and a top spring, with a cavity in the middle to accommodate a male insert. The top spring is cut in the middle with a gap to form a symmetrical structure. The middle of the cut surfaces of the top spring is stamped to form a pressing groove. The two pressing grooves are cut off on the outer side of one side of the side spring, and the inner side of the two pressing grooves is flush with the middle cut edge of the top spring. The tail ends of the pressing grooves are cut off to form two symmetrical upper springs. The tail ends of the upper springs are inclined into the cavity, and their tail ends extend to the lower part of the lower surface of the rear stamping slope to form a linkage protrusion. After the male insert is inserted, it lifts the upper spring and transmits the force to the top spring through the linkage protrusion, so that the top spring and the upper spring together press the male insert with a reverse force.

[0008] Preferably, the outer surface of each side spring is stamped with two identical side pressure grooves, which are arranged front to back. The side pressure grooves are cut off to form L-shaped through holes on the back and bottom sides, and their tail ends are inclined into the cavity to form side spring pieces.

[0009] Preferably, two limiting slots are formed on both sides of the front end ports of the two side springs, and the limiting slots are recessed inward.

[0010] Preferably, the middle part of the bottom spring sheet is formed by stamping to form an upwardly protruding upper platform.

[0011] Preferably, the bottom spring sheet is further cut with a self-locking spring sheet with elasticity in the middle. The upper surface of the self-locking spring sheet is flush with the upper surface of the top platform, and the front end is fixed to the front end of the bottom spring sheet. The rear end extends along the insertion direction of the male insert and gradually curves upward along the rear end to form a trigger point. The middle part of the self-locking spring sheet is provided with a protruding fastening point for matching and engaging with the positioning hole of the male insert.

[0012] Preferably, the protruding fastener has a triangular structure, with its front end being the apex of the triangle and its rear end being the base of the triangle, and the protruding fastener gradually slopes upward from the apex along the base.

[0013] Preferably, the two sides of the cut top spring sheet are inclined into the cavity; the lower pressure groove has a square structure; and the upper top platform has a square structure.

[0014] Preferably, the rivet foot consists of a rivet core foot and a rivet sheath foot. The rivet sheath foot is located at the rear end of the rivet core foot. The inner surfaces of both the rivet core foot and the rivet sheath foot are provided with wire placement grooves for accommodating and accommodating wires. The inner surface of the rivet core foot is provided with raised transverse pressure lines for pressing the wire core.

[0015] Preferably, the wire placement groove and the spring body are arranged on the same straight line, thereby forming a straight spring terminal structure.

[0016] Preferably, the centerline of the wire placement groove is perpendicular to the centerline of the spring body, thereby forming a horizontal spring terminal structure.

[0017] The beneficial effects of this invention are as follows: the spring body is an elastic component as a whole. Due to the design of the upper spring plate linkage protrusion and the L-shaped through hole side spring plate, a suitable rigid connection is cleverly established between the spring plate and the spring body. This allows the force generated after the male insert is inserted to be transmitted to the entire spring body. At the same time, the upper spring plate and the side spring plate also apply pressure to the male insert due to their own elasticity. At this time, the upper spring plate, the side spring plate, and the spring body together apply pressure to the male insert in the up, down, left, and right directions, forming a four-sided clamping effect. The limiting slot at the port forms a rigid limit on the side of the male insert, directly preventing the vertical displacement of the root of the male insert. By combining the downward tilt of the top platform and the top spring plate, the male insert is pressed and limited from all directions and multiple angles, making the contact between the male insert and the spring body tighter and more stable. This ensures a more secure contact between the male insert and the spring body after insertion, resulting in better stability after connection. It also improves the conductivity between the male insert and the spring body, avoiding safety hazards such as arcing due to poor contact, enhancing safety performance, and allowing for the flow of larger currents. This enables it to adapt to the wiring requirements of higher-power electrical appliances, ensuring safer and more stable operation of electrical appliances. Attached Figure Description

[0018] Figure 1 This is a front-view perspective view of Embodiment 1 of the present invention;

[0019] Figure 2 A partial schematic diagram of point A in Embodiment 1 of this utility model;

[0020] Figure 3 A bottom perspective view of Embodiment 1 provided by this utility model;

[0021] Figure 4 A top view of Embodiment 1 of this utility model;

[0022] Figure 5 A front view of Embodiment 1 provided by this utility model;

[0023] Figure 6 A cross-sectional view of Embodiment 1 provided by this utility model;

[0024] Figure 7 A perspective view of Embodiment 2 provided by this utility model;

[0025] In the diagram: 1. Spring body; 2. Riveting pin; 3. Bottom spring; 4. Side spring; 5. Top spring; 6. Upper spring; 7. Rear stamping bevel; 8. Linkage protrusion; 9. Side spring; 10. Top platform; 11. Limiting slot; 12. Self-locking spring; 13. Trigger point; 14. Protruding fastening point; 15. Riveting core pin; 16. Riveting leather pin; 17. Wire mounting groove; Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] Reference Figures 1-6 The three-dimensional anti-sway high-current spring terminal of this utility model includes an integrally formed spring body 1 and a rivet foot 2. The spring body 1 is located at the front end of the spring terminal and is integrally bent from an elastic metal material. It includes a bottom spring 3, two side springs 4, and a top spring 5. The four elastic springs form a cavity that can accommodate the male insert 18. The top spring 5 is cut in the middle along the insertion direction of the male insert 18 and a gap is left to form a symmetrical structure. The cut edges of the two cut top springs 5 ​​are inclined downward (inside the cavity), which is more conducive to forming downward pressure to press the male insert 18. The two cut sides of the top spring 5 are inclined downward (inside the cavity) to form a symmetrical structure. Square downward pressing grooves are stamped in the middle of the surface. The two downward pressing grooves are cut off on the outer side of the side spring 4. The inner side of the two downward pressing grooves is flush with the middle cut edge of the top spring 5. The tail end of the downward pressing groove is cut off to form two symmetrical upper spring pieces 6. Both upper spring pieces 6 are inclined downward (in the cavity), and their tail ends extend to the lower part of the lower surface of the rear stamping inclined surface 7 to form a linkage protrusion 8. When the male insert 18 is inserted, it lifts up the upper spring piece 6. The linkage protrusion 8 at the tail end of the upper spring piece 6 transmits the force to the top spring 5, so that the top spring 5 and the upper spring piece 6 press the male insert 18 together through the opposite force to prevent the male insert 18 from swinging up and down.

[0029] Both sides of the symmetrical side spring 4 are stamped with two identical side pressure grooves arranged in a front-to-back pattern. The side pressure grooves are cut off to form L-shaped through holes on the back and bottom sides. The tail ends of the through holes are inclined into the cavity to form side spring pieces 9. When the male insert 18 is inserted, all four side spring pieces 9 on both sides apply pressure to both sides of the male insert 18. Unlike the traditional U-shaped through hole, the side spring pieces 9 of the L-shaped through hole apply the pressure generated by the elasticity of the side spring pieces 9 to the male insert 18 through the tail ends of the side spring pieces 9. At the same time, due to the structure of the L-shaped through hole, a certain rigidity is formed at the connection between the root of the side spring piece 9 and the side spring 4. Therefore, when the male insert 18 is inserted and opens the side spring pieces 9, the pressure is transmitted to the side spring pieces 4 through the root of the side spring pieces 9. At this time, the side spring pieces 9 and the side spring pieces 4 apply pressure to the male insert 18 at the same time to prevent the male insert 18 from swinging left and right.

[0030] The bottom spring 3 has a square upper platform 10 formed by stamping, which protrudes upwards. The two sides of the top spring 5 are cut downwards (inside the cavity). The two front ends of the two side springs 4 are respectively machined to form two symmetrically arranged limiting slots 11, which are recessed inwards. When the male insert 18 is inserted, its side is recessed into the limiting slot 11. Therefore, the downward inclination of the upper platform 10 and the top spring 5 further increases the clamping force of the insert terminal on the male insert 18 in the vertical direction. Combined with the setting of the limiting slot 11, it further prevents the male insert 18 from swinging up and down. At the same time, the setting of the limiting slot can prevent the deformation of the overall structure of the insert terminal when the male insert is inserted at an angle or subjected to external torque, thereby avoiding the overall functional failure of the insert terminal.

[0031] A self-locking spring piece 12 with a rebound force is also cut into the middle of the bottom spring piece 3. The upper surface of the self-locking spring piece 12 is flush with the upper surface of the upper platform 10, and its front end is fixed to the front end of the bottom spring piece 3. Its rear end extends along the insertion direction of the male insert 18 and gradually curves upward to form a trigger point 13. The middle of the self-locking spring piece 12 is provided with a protruding fastening point 14 for matching and engaging with the positioning hole of the male insert 18. The protruding fastening point 14 has a triangular structure, with its front end being the apex of the triangle and its rear end being the base of the triangle. The protruding fastening point 14 gradually slopes upward from the apex along the base. When the male insert 18 is inserted, it is pushed forward with the inclined surface of the protruding fastening point 14 until the protruding fastening point 14 slides into the positioning hole in the middle of the male insert 18, at which point the insertion and positioning of the male insert 18 is completed. When the trigger point 13 is pressed, the self-locking spring piece 12 moves downward as a whole, causing the protruding latch 14 to disengage from the positioning hole of the male insert 18. At this time, the male insert 18 is released and can be pulled out.

[0032] The rear end of the spring-loaded terminal is a rivet foot 2, which consists of a rivet core foot 15 and a rivet sheath foot 16. The rivet sheath foot 16 is located at the rear end of the rivet core foot 15. Both the rivet core foot 15 and the rivet sheath foot 16 have wire placement grooves 17 on their inner surfaces for accommodating and holding wires. The inner surface of the rivet core foot 15 also has raised transverse pressure lines for pressing the wire core. The wire placement grooves 17 and the spring-loaded terminal body 1 are aligned in a straight line, thus forming a straight spring-loaded terminal structure. The rivet core foot 15 and the rivet sheath foot 16 are bent inwards to tightly wrap around the wire.

[0033] Example 2

[0034] Reference Figure 7 The difference between this embodiment and Embodiment 1 lies in the placement of the rivet core foot 15 and the rivet leather foot 16; the structure of the spring body 1 is the same as in Embodiment 1. In this embodiment, the centerline of the wire mounting groove 17 is perpendicular to the centerline of the spring body 1, thus forming a horizontal spring terminal structure.

[0035] Based on the above embodiments one and two, the spring body 1 of this three-dimensional anti-sway high-current spring terminal is an elastic component. Due to the linkage between the upper spring piece 6 and the protrusion 8 and the L-shaped through-hole side spring piece 9, a suitable rigid connection is cleverly established between the spring piece and the spring body 1. This allows the force generated after the male insert 18 is inserted to be transmitted to the entire spring body 1. At the same time, the upper spring piece 6 and the side spring piece 9 also apply pressure to the male insert 18 due to their elasticity. At this time, the upper spring piece 6, the side spring piece 9, and the spring body 1 together apply pressure to the male insert 18 in the up, down, left, and right directions, forming a four-sided clamping effect. When the male insert 18 swings, the tail end of the male insert 18, which usually swings more, will continue to be subjected to the pressure of the spring piece itself tilting into the cavity after it is released from the pressure of the spring body 1. This prevents the male insert 18 from partially detaching from the contact with the spring body 1, effectively ensuring the passage of high current. The limiting notch 11 at the port forms a rigid limit on the side of the male insert 18, directly preventing the vertical displacement of the root of the male insert 18. In the left-right direction, similar to the above principle, when the male insert 18 swings and is released from the clamping force of the spring body 1, it is still subjected to the pressure applied by the elasticity of the side spring 9 through the tail end of the side spring 9, thereby keeping the male insert 18 in contact with the spring body 1 and ensuring that the contact area remains unchanged.

[0036] The above solution, combined with the downward tilt of the upper platform 10 and the top spring plate 5, presses and limits the male insert 18 from all directions and multiple angles, making the contact between the male insert 18 and the spring body 1 tighter and more stable. This ensures that the male insert 18 makes a more firm contact with the spring body 1 after insertion, resulting in better stability after connection. It also improves the conductivity between the male insert 18 and the spring body 1, avoiding safety hazards such as arcing due to poor contact, enhancing safety performance, allowing for the flow of larger currents, enabling it to adapt to the wiring requirements of higher-power electrical appliances, and ensuring safer and more stable operation of electrical appliances.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A three-dimensional anti-sway high-current spring terminal, comprising an integrally formed spring body (1) and a rivet pin (2), characterized in that: The spring body (1) is integrally bent from an elastic metal material, including a bottom spring plate (3), two side spring plates (4) and a top spring plate (5), and a cavity is formed in the middle to accommodate the male insert plate (18); the top spring plate (5) is cut in the middle and a gap is left to form a symmetrical structure; the middle of the cut surfaces of the top spring plate (5) are stamped to form a pressing groove, the two pressing grooves are cut off on the outer side of one side of the side spring plate (4), and the inner side of the two pressing grooves is cut in the middle of the top spring plate (5). The cut edges are flush, and the tail end of the lower pressing groove is cut to form two symmetrical upper spring pieces (6). The tail ends of the upper spring pieces (6) are inclined into the cavity, and their tail ends extend to the lower part of the lower surface of the rear stamping inclined surface (7) to form a linkage protrusion (8). After the male insert (18) is inserted, it lifts up the upper spring pieces (6) and transmits the force to the top surface spring piece (5) through the linkage protrusion (8), so that the top surface spring piece (5) and the upper spring pieces (6) press the male insert piece (18) together through the opposite force.

2. The three-dimensional anti-sway high-current spring terminal according to claim 1, characterized in that: The outer surface of the side spring (4) is stamped to form two side pressure grooves with the same structure. The two side pressure grooves are arranged in front and behind. The side and lower side of the side pressure grooves are cut off to form L-shaped through holes, and their tail ends are inclined into the cavity to form side springs (9).

3. The three-dimensional anti-sway high-current spring terminal according to claim 2, characterized in that: Two limiting slots (11) are respectively machined on both sides of the front end port of the two side springs (4), and the limiting slots (11) are recessed inward.

4. The three-dimensional anti-sway high-current spring terminal according to any one of claims 1-3, characterized in that: The middle part of the bottom spring sheet (3) is formed by stamping to form an upwardly protruding upper platform (10).

5. The three-dimensional anti-sway high-current spring terminal according to claim 4, characterized in that: The bottom spring (3) is also cut with a self-locking spring (12) with elasticity in the middle. The upper surface of the self-locking spring (12) is flush with the upper surface of the upper platform (10). The front end is fixed to the front end of the bottom spring (3), and the rear end extends along the insertion direction of the male insert (18) and gradually curves upward along the rear end to form a trigger point (13). The middle part of the self-locking spring (12) is provided with a protruding fastening point (14) for matching and fastening with the positioning hole of the male insert (18).

6. The three-dimensional anti-sway high-current spring terminal according to claim 5, characterized in that: The protruding buckle (14) has a triangular structure, with its front end being the apex of the triangle and its rear end being the base of the triangle. The protruding buckle (14) gradually slopes upward from the apex along the base.

7. The three-dimensional anti-sway high-current spring terminal according to claim 6, characterized in that: The two sides of the top spring (5) are cut and inclined into the cavity; the lower pressure groove is a square structure; the upper platform (10) is a square structure.

8. The three-dimensional anti-sway high-current spring terminal according to claim 7, characterized in that: The rivet foot (2) is composed of a rivet core foot (15) and a rivet sheath foot (16). The rivet sheath foot (16) is located at the rear end of the rivet core foot (15). The inner surfaces of both the rivet core foot (15) and the rivet sheath foot (16) are provided with wire placement grooves (17) for accommodating and accommodating wires. The inner surfaces of the rivet core foot (15) are provided with raised transverse pressure lines for pressing the wire core.

9. The three-dimensional anti-sway high-current spring terminal according to claim 8, characterized in that: The wire placement groove (17) and the spring body (1) are arranged on the same straight line, thus forming a straight spring terminal structure.

10. The three-dimensional anti-sway high-current spring terminal according to claim 8, characterized in that: The centerline of the wire placement groove (17) is perpendicular to the centerline of the spring body (1), thus forming a horizontal spring terminal structure.

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