A high current connector

Abstract

The utility model discloses a kind of high current connectors, it is related to electric connector technical field. Including the at least one cylindrical conductive terminal of both ends being provided with plug interface, the cylindrical conductive terminal is covered with insulating matrix, one of the plug interface of the cylindrical conductive terminal is built-in with crown spring terminal, at least one section of the crown spring terminal is bent and is formed with contact contact point;The cylindrical conductive terminal outer inner recess is formed with stop hanging table, the insulating matrix is formed with stop piece plug-in through hole by inside to outside conduction, the stop piece plug-in hole is inserted with the stop piece of matching the stop hanging table. The stop hanging table of the present scheme and the stop piece plug-in hole of insulating matrix mutually cooperate, after stop piece insertion, with stop hanging table form mechanical limit and locking cooperation, to effectively prevent conductive terminal axial displacement or rotation when plugging or under external force impact and not easy to loosen, while maintaining high conduction efficiency, with good structural stability and electrical transmission stability.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, specifically a high-current connector. Background Technology

[0002] Existing high-current connectors are widely used between power supply busbars and server node modules in data center racks to achieve high-current, high-density power transmission and distribution. These connectors typically use a cylindrical conductive terminal structure with an insulating substrate to achieve modular installation, enabling rapid docking of server blades, power modules, and the main busbar of the rack via plug-in / plug-out. Current high-current connectors for data center racks generally employ a rigid plug-in cylindrical conductive terminal structure. The plug-in connection relies heavily on direct interference contact between the outer wall of the terminal and the inner wall of the socket to achieve electrical conduction. Over long-term operation, thermal expansion and contraction or micro-vibrations can cause contact pressure attenuation and contact resistance increase, thus affecting conduction stability. Furthermore, the connection between the conductive terminal and the insulating substrate is often a simple press-fit structure, which is prone to axial slippage and angular displacement during frequent plugging / unplugging or rack vibrations, causing terminal loosening or even dislocation, affecting overall power supply stability. Utility Model Content

[0003] The purpose of this application is to provide a technical solution to address the problems mentioned in the background section.

[0004] To achieve the above objectives, this application provides the following technical solution: A high-current connector includes at least one cylindrical conductive terminal with insertion interfaces at both ends. The cylindrical conductive terminal is covered with an insulating substrate. A crown spring terminal is built into one of the insertion interfaces of the cylindrical conductive terminal. At least one section of the crown spring terminal is bent to form a contact point. A stop bracket is formed by an inward and outward recess on the cylindrical conductive terminal. A stop member insertion hole is formed from the inside to the outside of the insulating substrate. A stop member matching the stop bracket is inserted into the stop member insertion hole.

[0005] Preferably, it also includes a self-tapping screw, and a fixing part with both ends conducting is formed at one point of the insulating substrate. A screw anti-reverse bracket is formed in the fixing part, and one end of the self-tapping screw is threaded through the screw anti-reverse bracket and is movably disposed in the fixing part.

[0006] Preferably, a crown spring terminal anti-entry mounting platform is also formed in the cylindrical conductive terminal insertion interface near one end of the crown spring terminal.

[0007] Preferably, the upper and lower sections of the crown spring terminal are bent to form contact points.

[0008] Preferably, the number of cylindrical conductive terminals is N+1 pins.

[0009] Preferably, the two ends of the cylindrical conductive terminal are conductive.

[0010] Preferably, the cylindrical conductive terminal has a non-conductive structure at both ends.

[0011] Preferably, the other end of the self-tapping screw is a twist joint.

[0012] Preferably, the twist connector is any one of the following: straight, cross, plum blossom, or hexagonal.

[0013] Preferably, the number of cylindrical conductive terminals is set to 7 pins.

[0014] In summary, the technical effects and advantages of this utility model are as follows: This solution establishes multiple elastic contacts by setting insertion interfaces at both ends of the cylindrical conductive terminal and embedding a crown spring terminal at one end. This allows the conductive terminal to achieve stable, low-resistance conduction by relying on the bending contact points of the crown spring to generate a uniform radial clamping force during insertion. At the same time, the stop mounting platform on the outside of the cylindrical conductive terminal cooperates with the stop insertion hole of the insulating substrate. After the stop is inserted, it forms a mechanical limit and locking engagement with the stop mounting platform. This effectively prevents the conductive terminal from axial displacement or rotation and is not easy to loosen when it is inserted, removed, or subjected to external impact. It maintains high conduction efficiency while having good structural stability and electrical transmission stability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-person perspective perspective view of the present invention.

[0017] Figure 2 This is a second-view perspective perspective view of the present invention.

[0018] Figure 3 This is a third-view perspective view of the present invention.

[0019] Figure 4 This is a three-dimensional view of the internal structure of this utility model.

[0020] Figure 5 This is an enlarged perspective view of the stop component of this utility model.

[0021] Figure 6 This is an enlarged perspective view of the cylindrical conductive terminal of this utility model.

[0022] Figure 7 This is an enlarged perspective view of the stop-positioning bracket combined with the stop-positioning component of this utility model.

[0023] Figure 8 This is an enlarged perspective view of the crown spring terminal of this utility model.

[0024] Figure 9 This is a partial cross-sectional perspective of the present invention. Figure 1 .

[0025] Figure 10 This is a partial cross-sectional perspective of the present invention. Figure 2 .

[0026] In the figure: cylindrical conductive terminal 1, plug interface 11, stop bracket 12, crown spring terminal anti-ingress bracket 13, insulating substrate 2, stop member plug hole 21, fixing part 22, screw anti-reverse bracket 23, crown spring terminal 3, contact point 31, stop member 4, self-tapping screw 5, one end of self-tapping screw 51, the other end of self-tapping screw 52. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-10 A high-current connector includes at least one cylindrical conductive terminal 1 with a socket 11 at both ends. The cylindrical conductive terminal is covered with an insulating substrate 2. A crown spring terminal 3 is built into one of the sockets 11 of the cylindrical conductive terminal 1. At least one section of the crown spring terminal 3 is bent to form a contact point 31. A stop plate 12 is formed by the outer and inner recesses of the cylindrical conductive terminal 1. The insulating substrate 2 has a stop member 4 insertion hole 21 formed from the inside to the outside. A stop member 4 matching the stop plate 12 is inserted into the stop member 4 insertion hole 21. Working principle: This solution forms multi-point elastic contact by setting insertion interfaces 11 at both ends of the cylindrical conductive terminal 1 and embedding a crown spring terminal 3 at one end. When the conductive terminal is inserted, it can generate a uniform radial clamping force by relying on the bending contact point 31 of the crown spring, which can achieve stable low-resistance conduction. At the same time, the stop bracket 12 on the outside of the cylindrical conductive terminal 1 cooperates with the insertion hole 21 of the stop member 4 of the insulating substrate 2. After the stop member 4 is inserted, it forms a mechanical limit and locking cooperation with the stop bracket 12, which effectively prevents the conductive terminal from axial displacement or rotation and is not easy to loosen when it is inserted, removed or subjected to external impact. While maintaining high conduction efficiency, it has good structural stability and electrical transmission stability.

[0029] Preferably, the device also includes a self-tapping screw 5. A fixed portion 22 with both ends open is formed at one location on the insulating substrate 2. A screw anti-retraction bracket 23 is formed within the fixed portion 22. One end 51 of the self-tapping screw is threaded through the screw anti-retraction bracket 23 and is movably disposed within the fixed portion 22. This structure, by providing a fixed portion 22 with both ends open on the insulating substrate 2 and forming a screw anti-retraction bracket 23 within it, allows the self-tapping screw 5 to gradually cut along the thread direction and embed into the fixed portion 22 of the insulating substrate 2 during screwing. A multi-point meshing mechanical locking relationship is formed between the thread and the anti-retraction bracket, thereby achieving screw fastening and anti-loosening function. When the connector operates under long-term vibration or thermal stress, the self-tapping screw 5 can resist loosening through the reverse friction force with the bracket. The axial rotation tendency is eliminated to prevent the threads from loosening or dislodging, ensuring the bonding strength and assembly stability between the conductive terminals and the insulating substrate 2. This allows the overall structure to maintain its tightness, reliability, and shock resistance even under high current carrying capacity and high frequency insertion / removal conditions. When one end 51 of the self-tapping screw continues to be screwed in and locked with the metal mounting hole or threaded hole of the mating connector, an integrated mechanical connection path is established between the two connectors. This allows the connector to withstand both axial tensile force and lateral shear force after assembly, preventing loosening or displacement of the connector during insertion / removal, vibration, and thermal cycling. The combined action of the reverse friction force between the screw and the mounting plate and the anti-retraction support ensures the stability of the locking position and the structural reset accuracy after repeated insertion / removal. This maintains the tightness, reliability, and overall structural rigidity of the connectors under high current carrying capacity and high frequency insertion / removal conditions.

[0030] Preferably, a crown spring terminal 3 anti-entry mounting platform 13 is also formed in the cylindrical conductive terminal 1 insertion interface 11 near one end of the crown spring terminal 3. This structure of the present solution provides a crown spring terminal 3 anti-entry mounting platform 13 in the cylindrical conductive terminal 1 insertion interface 11 near one end of the crown spring terminal 3, so that the crown spring terminal 3 can be axially limited and positionally constrained by the mounting platform during assembly. When the crown spring terminal 3 is pressed into the conductive terminal, its end will be blocked by the anti-entry mounting platform and cannot continue to slide forward, thereby preventing the crown spring terminal 3 from shifting, deforming or dislodging due to excessive insertion force or vibration impact, ensuring that its contact point 31 is always in the designed radial elastic working range, maintaining constant contact pressure and multi-point conduction effect. At the same time, the mounting platform can also provide a structural positioning reference during disassembly and assembly, so that the crown spring terminal 3 can still maintain a stable mechanical position and electrical performance after repeated insertion and removal, improving the durability and reliability of the entire high current connector.

[0031] Preferably, the cylindrical conductive terminals 1 are configured with N+1 pins. By using equidistant limiting and locking components 4 to secure each pin within the insulating substrate 2, and forming multi-point circumferential elastic contact with the crown spring terminal 3 near one end, multiple parallel conductive paths can obtain approximately consistent contact pressure and equivalent path length during insertion, thereby achieving current shunting and contact resistance balance. This significantly reduces the single-pin current density and I²R loss, suppresses local temperature rise and improves thermal gradient, while also improving vibration and shock resistance and insertion / removal life. Furthermore, it provides a structural foundation and electrical reliability guarantee for N+1 redundancy, branch maintenance and modular expansion in cabinet power supply scenarios.

[0032] Preferably, the cylindrical conductive terminal 1 has a conductive structure at both ends, so that the terminal forms a complete current transmission channel in the axial direction. When either end is inserted into the corresponding plug interface 11, it can directly form a low-resistance conductive path with the mating part, thereby realizing bidirectional current input and output. This through-type conductive structure not only reduces the contact resistance and heat accumulation caused by intermediate solder joints or transition connections, but also ensures the continuity and balance of the current distribution inside the terminal in terms of structure, making the energy transmission under high current carrying conditions more stable and reliable. At the same time, it is convenient to realize modular series or parallel arrangement in data center cabinets and other occasions, improving the flexibility of system wiring and overall conductivity efficiency.

[0033] Preferably, the cylindrical conductive terminal 1 has a non-conductive structure at both ends. By setting an insulating partition or a solid enclosed section between the two ends of the terminal, the current forms a unidirectional or partial conductive path only inside the terminal, thereby effectively avoiding the risks of backflow, arcing or crosstalk that may occur when the double-ended through structure is powered by high voltage or multiple modules in parallel. This non-conductive design can also achieve electrical isolation between terminals in terms of structure, preventing currents from different circuits or different polarities from interfering with each other. At the same time, it facilitates independent maintenance and safety isolation of each power supply module in the data center cabinet, improves the reliability and protection level of the system, and reduces the risk of short circuits caused by misinsertion or overload.

[0034] Preferably, the other end 52 of the self-tapping screw is a twist connector, which can be any one of slotted, Phillips, Torx, or hexagonal. By forming a standardized twist groove at the end of the screw, the appropriate tool can be selected for installation or disassembly according to the operating space and torque requirements, achieving efficient force transmission and precise locking. Different shaped twist connectors can be adapted to various bit types, ensuring the stability of torque transmission while preventing thread stripping or damage to the insulation substrate 2 due to over-tightening. This improves the convenience of assembly and the compatibility of maintenance, enabling the high-current connector to achieve fast, reliable, and repeatable locking operations even in high-density installation environments within cabinets.

[0035] Preferably, the cylindrical conductive terminals 1 are configured with 7 pins. By uniformly arranging seven cylindrical conductive terminals 1 in an array within the insulating substrate 2, each pin is symmetrically distributed in space and has an independent conductive path. This enables multi-channel current shunting conduction during high current transmission, significantly reducing the current carrying pressure and contact resistance of a single pin, and avoiding thermal unevenness and performance degradation caused by local heating. At the same time, the 7-pin configuration can take into account the requirements of high power supply and signal synchronization. It can meet the requirements of the cabinet power module for multi-redundant power supply, and facilitate compact arrangement and high-density connection in a limited space, thereby improving the overall conductivity, heat dissipation performance and modular compatibility of the system.

[0036] Preferably, the cylindrical conductive terminals 1 are configured with 7 pins. By uniformly arranging seven cylindrical conductive terminals 1 in an array within the insulating substrate 2, each pin is symmetrically distributed in space and has an independent conductive path. This enables multi-channel current shunting conduction during high current transmission, significantly reducing the current carrying pressure and contact resistance of a single pin, and avoiding thermal unevenness and performance degradation caused by local heating. At the same time, the 7-pin configuration can take into account the requirements of high power supply and signal synchronization. It can meet the requirements of the cabinet power module for multi-redundant power supply, and facilitate compact arrangement and high-density connection in a limited space, thereby improving the overall conductivity, heat dissipation performance and modular compatibility of the system.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-current connector, comprising at least one cylindrical conductive terminal with insertion interfaces at both ends, wherein the cylindrical conductive terminal is covered with an insulating substrate, characterized in that: A crown spring terminal is built into one of the insertion interfaces of the cylindrical conductive terminal, and at least one section of the crown spring terminal is bent to form a contact point; a stop bracket is formed by the outer and inner recesses of the cylindrical conductive terminal, and a stop member insertion hole is formed from the inside to the outside of the insulating substrate, and a stop member matching the stop bracket is inserted into the stop member insertion hole.

2. The high-current connector according to claim 1, characterized in that: It also includes a self-tapping screw, and a fixing part with both ends conducting is formed at one point of the insulating substrate. A screw anti-reverse bracket is formed in the fixing part, and one end of the self-tapping screw is threaded through the screw anti-reverse bracket and is movably disposed in the fixing part.

3. The high-current connector according to claim 1, characterized in that: A crown spring terminal anti-entry mounting platform is also formed inside the cylindrical conductive terminal insertion interface near one end of the crown spring terminal.

4. The high-current connector according to claim 1, characterized in that: The upper and lower sections of the crown spring terminal are bent to form contact points.

5. The high-current connector according to any one of claims 1-4, characterized in that: The number of cylindrical conductive terminals is N+1 pins.

6. The high-current connector according to claim 5, characterized in that: The cylindrical conductive terminal has a conductive structure at both ends.

7. The high-current connector according to claim 5, characterized in that: The cylindrical conductive terminal has a non-conductive structure at both ends.

8. The high-current connector according to claim 2, characterized in that: The other end of the self-tapping screw is a twist connector.

9. The high-current connector according to claim 8, characterized in that: The twist connector can be any one of the following: straight, cross, plum blossom, or hexagonal.

10. The high-current connector according to claim 5, characterized in that: The cylindrical conductive terminals are configured with 7 pins.

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