Multistage progressive contact elastic structure of fisheye terminal

Abstract

The invention discloses a multi-stage progressive contact elastic structure of a fisheye terminal, which comprises a fixing part, a plurality of fisheye assemblies are continuously and fixedly mounted on the fixing part, each fisheye assembly comprises a connecting rod and an elastic piece fixedly mounted on the connecting rod, each elastic piece is provided with a plurality of elastic pieces, and the fixing part is used for connecting a PCB or a wire. The elastic piece is in electrical contact with the side wall of the female terminal, the fisheye terminals can achieve multi-stage progressive contact through the fisheye assemblies which are fixed in series, therefore, the contact area is effectively increased, the contact resistance is reduced, the stability and reliability of electrical connection are improved, the structural design is compact, installation is convenient, and the cost is low. And the connector is suitable for connector application occasions with relatively high requirements on electrical performance.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, specifically relating to a multi-level progressive contact elastic structure for fisheye terminals. Background Technology

[0002] With the rapid development and popularization of new energy vehicles, the requirements for automotive electrical systems are becoming increasingly stringent. Electronic connectors are key components for power and signal transmission, and their quality directly affects the performance of the entire electrical system. Therefore, the reliability of electronic connectors is receiving increasing attention. In the field of electronic connectors, fisheye terminals are becoming increasingly widely used due to their advantages such as low insertion force, short processing time, vibration resistance, tolerance compensation, and minimal damage to printed circuit board holes. However, most existing fisheye terminals only have one contact point, which limits their ability to handle large currents. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-level progressive contact elastic structure for fisheye terminals to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-level progressive contact elastic structure for a fisheye terminal, including a fixing part, wherein multiple fisheye components are continuously and fixedly installed on the fixing part, the fisheye components include a connecting rod, and an elastic element is fixedly installed on the connecting rod, the elastic element being provided with multiple elastic pieces.

[0005] Preferably, both the fixing part and the connecting rod are provided with a connecting seat, the connecting seat is provided with a screw hole, and the connecting rod is provided with a first stud.

[0006] Preferably, the connecting seat has a fixing pattern.

[0007] Preferably, the connecting seat is provided with a fixing groove.

[0008] Preferably, the connecting seat has symmetrically provided side planes.

[0009] Preferably, a spring is fixedly installed on the connecting rod, and a sliding element is provided between the spring and the elastic element.

[0010] Preferably, the connecting rod is fixedly mounted with a rubber component, the rubber component having a protrusion that abuts against the elastic sheet.

[0011] Preferably, the connecting rod is fixedly mounted with a plug, and the plug is provided with a second stud.

[0012] Preferably, the elastic element is made of phosphor bronze alloy.

[0013] Preferably, the fixing part is provided with a welding groove and a fixing rib.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] One end of the fixing part of the present invention is connected to a PCB or wire. Multiple fisheye components are continuously fixedly installed on the fixing part. In use, the elastic element makes electrical contact with the side wall of the female terminal. Through multiple fisheye components fixed in series, the fisheye terminal can make electrical contact with the side wall of the female terminal in multiple stages, thereby improving the electrical performance. Attached Figure Description

[0016] Figure 1 This is a structural view of the present invention.

[0017] Figure 2 This is an exploded structural view of the present invention.

[0018] Figure 3 This is a structural view of the fisheye component of the present invention.

[0019] Figure 4 This is an exploded structural view of the fisheye component of the present invention.

[0020] Figure 5 This is the first perspective structural view of the connector of the present invention.

[0021] Figure 6 This is a second perspective structural view of the connector of the present invention.

[0022] Figure 7 This is a structural view of the plug component of the present invention.

[0023] The diagram is labeled as follows: 1. Fixing part, 2. Fisheye assembly, 3. Connecting rod, 4. Elastic part, 5. Elastic sheet, 6. Screw hole, 7. First stud, 8. Fixing groove, 9. Side plane, 10. Spring, 11. Sliding part, 12. Rubber part, 13. Protrusion, 14. Plug part, 15. Second stud, 16. Welding groove, 17. Fixing rib, 18. Connecting seat, 19. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1:

[0026] The multi-stage progressive contact elastic structure of the fisheye terminal includes a fixing part 1, on which multiple fisheye components 2 are continuously and fixedly mounted. Each fisheye component 2 includes a connecting rod 3, on which an elastic element 4 is fixedly mounted. The elastic element 4 has multiple elastic pieces 5. Both the fixing part 1 and the connecting rod 3 are provided with connecting seats 19, which have screw holes 6 and first studs 7. The connecting seat 19 has fixing grooves 8 and 9. The connecting seat 19 has symmetrically arranged side planes 10. A spring 11 is fixedly mounted on the connecting rod 3, and a sliding element 12 is provided between the spring 11 and the elastic element 4. A rubber element 13 is fixedly mounted on the connecting rod 3, and the rubber element 13 has a protrusion 14 that abuts against the elastic pieces 5. A plug element 15 is fixedly mounted on the connecting rod 3, and the plug element 15 has a second stud 16. The elastic element 4 is made of phosphor bronze alloy. The fixing part 1 has a welding groove 17 and a fixing rib 18.

[0027] Through the above technical solution, one end of the fixing part 1 of the present invention is connected to a PCB or wire, and multiple fisheye components 2 are continuously fixedly installed on the fixing part 1. In use, the elastic member 4 of the elastic member 4 makes electrical contact with the side wall of the female terminal. Through multiple fisheye components 2 fixed in series, the fisheye terminal can make electrical contact with the side wall of the female terminal in multiple stages, thereby improving the electrical performance.

[0028] Example 2:

[0029] In this embodiment, the fixing part 1 is used to achieve electrical connection with an external circuit or wire. Multiple fisheye components 2 are continuously fixedly installed on the fixing part 1 along its length direction. These components are arranged in sequence to form a series contact array.

[0030] Each fisheye assembly 2 includes a connecting rod 3. One end of the connecting rod 3 of the first fisheye assembly is fixedly connected to the fixing part 1. The connecting rods 3 of subsequent fisheye assemblies are connected in series, and their other ends are fixedly installed to an elastic member 4. The elastic member 4 is the core component that generates contact force, and its main structure is provided with multiple elastic plates 5. These elastic plates 5 are distributed around the central axis of the elastic member 4 and extend radially outward to form an elastic contact arm.

[0031] When the fisheye terminal is inserted into the socket of the female terminal, the elastic element 4 of each fisheye assembly 2 will contact the inner wall of the socket of the female terminal. Since multiple fisheye assemblies 2 are arranged sequentially along the insertion direction, their contact with the female terminal does not occur simultaneously, but rather in a multi-stage, gradual process. The fisheye assembly 2 located at the front first contacts the inner wall of the female terminal and generates an initial contact force. As the insertion depth increases, the subsequent fisheye assemblies 2 contact the inner wall of the female terminal in sequence, each generating an independent contact force.

[0032] This multi-level progressive contact mechanism results in the total electrical contact area being accumulated from multiple independent contact points. Multiple elastic plates 5 on each elastic component 4 further disperse the contact at each contact point into multiple micro-contact lines or contact surfaces. The series connection of multiple fisheye components 2 not only significantly increases the overall effective contact area but also disperses the contact resistance through multiple independent elastic contact points.

[0033] When current flows through the terminal, the current path enters from the fixing part 1 and flows sequentially through each fisheye assembly 2 connected in series. Each fisheye assembly 2 constitutes a parallel current branch, and its elastic sheet 5 maintains stable electrical contact with the inner wall of the female terminal. This structure reduces the current density at a single contact point, reduces heat generation at the contact area, thereby improving the overall current carrying capacity of the terminal and the reliability of the electrical connection. The presence of multiple elastic contact points also enhances adaptability to vibration environments and ensures the continuity of contact under dynamic operating conditions.

[0034] Example 3:

[0035] The fixing part in this embodiment is used to connect a printed circuit board or wires. Multiple fisheye assemblies 2 are continuously fixedly mounted on the fixing part. Each fisheye assembly 2 includes a connecting rod 3. A spring element 4 is fixedly mounted on the connecting rod 3. The spring element 4 is provided with multiple elastic pieces 5.

[0036] Both the fixing part and the connecting rod 3 are provided with a connecting seat 19. The connecting seat 19 is provided with a screw hole 6. One end of the connecting rod 3 is provided with a first stud 7. The other end of the connecting rod 3 is also provided with a connecting seat 19. This connecting seat 19 is also provided with a screw hole 6. The connecting rod 3 of the first fisheye part is screwed into the screw hole 6 of the connecting seat 19 of the fixing part through its first stud 7, thereby realizing the connection with the fixing part.

[0037] Subsequent fisheye components 2 are connected in the same manner. The first stud 7 of the connecting rod 3 of the second fisheye component is screwed into the threaded hole 6 of the connecting seat 19 at the end of the connecting rod 3 of the first fisheye component 2. The first stud 7 of the connecting rod 3 of the third fisheye component is screwed into the threaded hole 6 of the connecting seat 19 at the end of the connecting rod 3 of the second fisheye component 2. And so on, multiple fisheye components 2 are continuously fixed at the fixing part through this threaded connection method, forming a series structure.

[0038] When the fisheye terminal is inserted into the socket of the female terminal, the elastic element 4 and its elastic piece 5 on each fisheye assembly 2 will contact the inner wall of the socket of the female terminal. Since multiple fisheye assemblies 2 are fixed in series, they are arranged sequentially along the insertion direction. During the insertion process, the fisheye assembly 2 located at the front end contacts the side wall of the female terminal first, followed by the fisheye assembly 2 located at the rear end in sequence. This multi-stage progressive contact method allows the current path to pass through multiple parallel contact points.

[0039] The engagement of multiple elastic tabs 5 with the sidewall of the female terminal increases the effective contact area. Multiple fisheye components 2 connected in series form multiple parallel current paths. This structure reduces the current load at a single contact point and improves the overall current carrying capacity. The multi-level contact engagement also enhances connection stability and reduces the risk of contact failure due to vibration. The entire structure is assembled via threaded connections, allowing for easy adjustment of the number of fisheye components according to current carrying requirements.

[0040] Example 4:

[0041] In this embodiment, multiple fisheye assemblies 2 are continuously fixedly mounted on the fixing part. Each fisheye assembly 2 consists of a connecting rod 3 and a spring member 4. The spring member 4 is fixedly mounted on the connecting rod 3, and the spring member 4 is provided with multiple elastic pieces 5. The fixing part and the end of each connecting rod 3 are provided with a connecting seat 19. These connecting seats 19 are provided with screw holes 6. At the same time, a first stud 7 is machined at one end of each connecting rod 3.

[0042] During assembly, the first stud 7 of the first connecting rod 3 is screwed into the threaded hole 6 of the fixing part connecting seat 19. The first stud 7 of subsequent connecting rods 3 are then screwed into the threaded hole 6 of the connecting seat 19 of the previous connecting rod 3 in turn. Through this threaded connection method, multiple fisheye assemblies 2 can be continuously connected and fixed in the axial direction to form an integral contact structure. The elastic element 4 and its elastic plate 5 on each connecting rod 3 are thus arranged in a straight line.

[0043] The connector 19 of this embodiment has a fixing groove 8 inside. These fixing grooves 8 are specific texture structures machined on the inner wall of the screw hole 6. When the first stud 7 of the connecting rod 3 is screwed into the fixing part or the screw hole 6 of the adjacent connecting rod 3, the external thread of the first stud 7 will tightly mesh and interfere with the fixing groove 8 on the inner wall of the screw hole 6 of the connector 19. This interference generates additional frictional resistance on the thread pair of the first stud 7.

[0044] The frictional resistance generated by the fixing groove 8 acts directly on the threaded engagement part. This resistance forms a counter-torque, which can effectively counteract the tendency of the thread to loosen due to external vibration or stress changes. In dynamic working environments, such as when there is mechanical vibration or temperature cycling, the threaded connection part is prone to a decrease in preload due to slight displacement. The fixing groove 8, through its interference characteristics, constrains this slight displacement, keeping the position of the first stud 7 relatively fixed within the threaded hole 6.

[0045] By limiting the loosening of the first stud 7, the mechanical connection stability between the entire series of fisheye assemblies 2 is improved. The relative positional relationship between the connecting rods 3 and between the connecting rods 3 and the fixing part is maintained. This stable mechanical connection is the foundation for ensuring electrical performance. It ensures that the elastic members 4 of the multiple fisheye assemblies 2 can achieve multi-stage progressive contact when inserted into the female terminal, as designed.

[0046] When the fisheye terminal structure is inserted into the socket of the female terminal, the elastic tabs 5 on each fisheye assembly 2 will sequentially contact the inner wall of the female terminal. Since multiple fisheye assemblies 2 are connected in series, they form multiple parallel current paths with the inner wall of the female terminal. The fixing groove 8 ensures the stability of the series structure, enabling these parallel contact points to work continuously and reliably. The multi-level contact shares the current, thereby improving the current carrying capacity of the entire terminal and the reliability of the electrical connection.

[0047] Example 5:

[0048] In this embodiment, multiple fisheye components 2 are continuously fixedly mounted on the fixing part. Each fisheye component 2 includes a connecting rod 3, on which a spring element 4 is fixedly mounted. The spring element 4 is provided with multiple spring plates 5. Both the fixing part and the connecting rod 3 are provided with a connecting seat 19, on which a screw hole 6 is provided. One end of the connecting rod 3 is provided with a first stud 7. During assembly, the first stud 7 of one connecting rod 3 is screwed into the screw hole 6 of the connecting seat 19 of the fixing part, and the first stud 7 of subsequent connecting rods 3 are screwed into the screw hole 6 of the connecting seat 19 of the previous connecting rod 3 in sequence. Through this threaded engagement method, multiple fisheye components 2 can be continuously series-fixed in the axial direction to form an integral multi-stage contact structure.

[0049] In this embodiment, the connector 19 is provided with a fixing groove 9. One end of the elastic member 4 is designed to be inserted into the fixing groove 9. During assembly, the end of the elastic member 4 is first inserted into the fixing groove 9 of the connector 19 to achieve initial positioning and pre-fixation. Subsequently, solder is melted into the fixing groove 9, and the end of the elastic member 4 is firmly bonded to the connector 19 through a welding process. This welding fixing method forms a stable metal connection between the elastic member 4 and the connector 19, which serves as a current path, eliminating the problem of increased resistance caused by loosening or poor contact.

[0050] The working principle of this structure is as follows: One end of the fixing part is used to connect to an external PCB or wire. When the fisheye terminal is inserted into the socket of the female terminal, the spring element 4 and its spring piece 5 on each fisheye assembly 2 will contact the inner wall of the female terminal socket. Since multiple fisheye assemblies 2 are fixed in series, they will contact the side wall of the female terminal sequentially along the insertion direction, forming a multi-level progressive electrical contact. This design makes the current path no longer a single contact point, but transmitted through multiple parallel contact paths.

[0051] The elastic element 4 is fixed in the fixing groove 9 of the connector 19 by welding, a design that directly improves the stability of the electrical connection. The welding point provides a low-resistance, high-reliability electrical connection, ensuring that current can be efficiently and stably transmitted from the connector 19 to the elastic element 4, and then to the female terminal through the elastic piece 5. Even in high-vibration or frequent insertion / removal operating environments, welding fixation can effectively prevent fretting wear or changes in contact resistance between the elastic element 4 and the connector 19, thereby maintaining stable electrical performance.

[0052] The series connection of multiple fisheye components 2 and the cooperation of multiple elastic pieces 5 on each elastic element 4 together form a multi-level, multi-point contact network. This not only significantly increases the effective contact area, providing a physical basis for carrying larger currents, but also improves the compliance and reliability of the contact through the multi-level progressive contact method. The robust welded connection between the elastic element 4 and the connecting seat 19 is the key foundation for ensuring that this multi-level contact structure can exert its superior electrical performance, ensuring the continuity and low loss of the current path from the fixing part to each elastic piece 5.

[0053] Example 6:

[0054] In this embodiment, the connecting seat 19 has symmetrically arranged side planes 10 on its outer wall. The arrangement of these side planes 10 provides an effective clamping surface for the clamping tool.

[0055] During assembly, the operator uses a special clamping tool whose jaws are adapted to the shape of the side planes 10 on the connecting seat 19. The tool jaws clamp onto the two side planes 10, effectively fixing the connecting seat 19 and preventing it from rotating during tightening. After the connecting seat 19 is securely clamped, the operator can align and screw the first stud 7 at the end of the connecting rod 3 into the threaded hole 6 of the connecting seat 19. Through the tightening action, the first stud 7 engages with the internal thread of the threaded hole 6, realizing the mechanical connection and electrical conduction between the connecting rod 3 and the connecting seat 19.

[0056] This structural design solves the problem of reliably fixing the connector 19 in confined spaces or assembly scenarios requiring precise alignment. The presence of the side plane 10 allows the clamping tool to apply force evenly to the connector 19, preventing damage or deformation to the surface of the connector 19 due to uneven force. At the same time, this clamping method provides a stable foundation for screwing in the first stud 7, ensuring the accuracy and reliability of the threaded engagement, thereby guaranteeing the overall structural stability of the multiple fisheye components 2 fixed in series.

[0057] By implementing this embodiment, the assembly process of the fisheye terminal is simplified, and assembly efficiency and consistency are improved. The symmetrical side plane 10 structure on the connector 19, as a fundamental improvement, works in conjunction with the aforementioned multi-level progressive contact elastic structure to enhance the applicability and reliability of the fisheye terminal in high-requirement electrical systems such as new energy vehicles.

[0058] Example 7:

[0059] In this embodiment, one end of the fixing part 1 is used to connect a printed circuit board or wires. A plurality of fisheye assemblies 2 are continuously fixedly mounted on the fixing part 1. Each fisheye assembly 2 includes a connecting rod 3. An elastic member 4 is fixedly mounted on the connecting rod 3. The elastic member 4 is provided with a plurality of elastic pieces 5.

[0060] In this embodiment, a spring 11 is fixedly mounted on the connecting rod 3. A sliding member 12 is provided between the spring 11 and the elastic member 4. The sliding member 12 can move along the axial direction of the connecting rod 3.

[0061] When the fisheye terminal is inserted into the female terminal, the elastic element 4 undergoes elastic deformation due to the compression of the inner wall of the female terminal, extending its length axially. The axial force generated by the deformation acts on the sliding element 12, pushing it to move and compressing the spring 11. After being compressed, the spring 11 generates a reverse elastic restoring force, which is transmitted to the elastic element 4 through the sliding element 12, applying a continuous axial support force to the elastic element 4. This support force enhances the contact pressure between the elastic pieces 5 on the elastic element 4 and the inner wall of the female terminal, thereby improving the stability of the electrical contact and ensuring the reliability of current transmission.

[0062] When the fisheye terminal is pulled out of the female terminal, the external compressive force disappears. At this time, the compressed spring 11 releases its stored elastic potential energy, and the resulting restoring force pushes the slider 12 to reset. The slider 12 then assists the elastic element 4 in returning to its initial shape from the deformed state. The auxiliary restoring force provided by the spring 11 reduces the need to rely entirely on the elasticity of the elastic element 4 itself for recovery, effectively reducing stress fatigue of the elastic element 4 material, thereby extending the service life of the entire fisheye terminal.

[0063] Through the above structure, an effective force transmission and engagement are formed between the spring 11, the slider 12, and the elastic element 4. During insertion, the spring 11 is compressed to store energy and improve contact stability; during withdrawal, the spring 11 releases energy to assist in reset, together constituting a complete dynamic elastic contact and recovery mechanism. This mechanism, in conjunction with multiple fisheye components 2 connected in series, achieves multi-level progressive electrical contact between the fisheye terminal and the sidewall of the female terminal, improving the electrical performance and durability of the terminal in high-current applications.

[0064] Example 8:

[0065] In this embodiment, one end of the fixing part 1 is used to connect a printed circuit board or wires. Multiple fisheye assemblies 2 are continuously fixedly mounted on the fixing part 1. Each fisheye assembly 2 includes a connecting rod 3 and a spring member 4. The spring member 4 is fixed to the connecting rod 3 and has multiple outwardly extending spring pieces 5. These spring pieces 5 are in an expanded state in their free state, and their design allows the spring pieces 5 to form multi-point electrical contact with the inner wall of the female terminal when the spring member 4 is inserted.

[0066] In this embodiment, a rubber component 13 is fixedly installed on the connecting rod 3. The rubber component 13 has a protrusion 14 on the side facing the elastic sheet 5. In the initial state where the elastic component 4 is not inserted into the female terminal, the protrusion 14 of the rubber component 13 maintains an abutment relationship with the inner surface of the elastic sheet 5, applying a small pre-pressure to the elastic sheet 5.

[0067] When the elastic element 4 is inserted into the female terminal, the elastic piece 5 is compressed by the inner wall of the female terminal, undergoing inward elastic deformation. During this process, the elastic piece 5 compresses the protrusion 14 of the rubber element 13 inward. The rubber element 13 deforms accordingly, and its protrusion 14 generates a counterforce due to the elasticity of the material, which is continuously applied to the inner side of the elastic piece 5. This combination means that, in the compressed state, the elastic piece 5, in addition to its own metallic elastic force, also receives the continuous elastic force provided by the protrusion 14 of the rubber element 13. This composite elastic force enhances the contact pressure between the elastic piece 5 and the inner wall of the female terminal, thereby improving the stability of the electrical contact and ensuring more reliable current transmission.

[0068] When the elastic element 4 is pulled out of the female terminal, the squeezing force of the inner wall of the female terminal on the elastic piece 5 disappears. At this time, the elastic potential energy stored in the protrusion 14 of the rubber element 13 is released, and its restoring force acts on the elastic piece 5, assisting the elastic piece 5 to expand outward and accelerating the elastic element 4 to return to its initial shape. This process reduces the fatigue of the metal material of the elastic piece 5 caused by repeated plastic deformation, effectively extending the overall service life of the elastic element 4.

[0069] Multiple such fisheye components 2 are connected in series by the fixing part 1. When the entire structure is inserted into the female terminal, the elastic elements 4 of each fisheye component 2 sequentially contact the inner wall of the female terminal, forming a multi-stage progressive electrical connection. Each stage of contact obtains stable contact pressure through the cooperation mechanism between the rubber element 13 and the elastic sheet 5. This multi-stage contact structure increases the total conductive contact area, reduces contact resistance, and enables the fisheye terminal to carry a larger current, thus improving electrical performance.

[0070] Example 9:

[0071] In this embodiment, the connecting rod 3 is fixedly mounted with a plug 15. The plug 15 is provided with a second stud 16. The top of the plug 15 is provided with a spherical surface, which is used to guide the fisheye terminal into the female terminal. The second stud 16 is screwed and fixed to the screw hole 6 of the end connecting rod 3.

[0072] In practice, the plug 15 is mechanically connected to the last connecting rod 3 via its second stud 16. This connecting rod 3 is the last of a series of fisheye assemblies 2. The second stud 16 is screwed into a pre-drilled hole 6 at the end of the connecting rod 3, securely fixing the plug 15 to the end of the connecting rod 3. This threaded connection provides reliable mechanical fixation and ensures that the plug 15 remains coaxial with the entire fisheye terminal structure.

[0073] The spherical structure at the top of the plug 15 presents a smooth, curved surface. When the fisheye terminal needs to be inserted into the socket of the female terminal, this spherical surface first contacts the entrance edge of the female terminal socket. Due to the geometry of the spherical surface, it can convert the axial insertion force into a radial guiding effect, allowing the plug 15 and the entire fisheye terminal assembly connected thereafter to smoothly align and slide into the female terminal, reducing jamming and friction during the insertion process.

[0074] The design of the plug component 15 enables the entire multi-stage progressive contact elastic structure to have a self-aligning function when inserted into the female terminal. The fit between the spherical surface and the female terminal orifice effectively compensates for minor alignment deviations. In the initial stage of the insertion process, the spherical guiding structure works first to ensure that the subsequent elastic element 4 can smoothly enter the inner cavity of the female terminal. Only after the plug component 15 is fully inserted do the elastic elements 4 in the multiple fisheye assemblies 2 begin to contact the inner wall of the female terminal.

[0075] This design separates the insertion guidance function from the electrical contact function. The plug component 15 serves a purely mechanical guiding role, while the multiple fisheye assemblies 2 connected in series are dedicated to electrical contact. The way the second stud 16 is fixed to the connecting rod 3 makes the plug component 15 an independent, detachable part of the entire terminal front end. This structure ensures that even if the guiding part wears during repeated insertion and removal, the plug component 15 can be replaced individually without affecting the core fisheye contact assembly behind it.

[0076] The entire assembly begins with the fixing part 1, sequentially connecting multiple fisheye components 2, and finally ending with a connecting rod 3 on which the plug component 15 is mounted. Current flows in from the fixing part 1, passes through each connecting rod 3 and the spring element 4, and is ultimately conducted to the plug component 15 via the connecting rod 3 at the end. Although the primary function of the plug component 15 is mechanical guidance, its metallic material also makes it part of the current path. Multiple points of contact between the spring elements 4 and the inner wall of the female terminal, combined with the smooth guidance of the plug component 15 at the front end, achieve an electrical connection effect characterized by low insertion force, high reliability, and high current carrying capacity.

[0077] Example 10:

[0078] In this embodiment, one end of the fixing part 1 is used to connect a printed circuit board or wires. Multiple fisheye assemblies 2 are continuously fixedly mounted on the fixing part 1. Each fisheye assembly 2 includes a connecting rod 3, and a spring element 4 is fixedly mounted on the connecting rod 3. The spring element 4 is provided with multiple elastic pieces 5. In this embodiment, the material constituting the spring element 4 is phosphor bronze alloy.

[0079] The phosphor bronze alloy material endows the elastic component 4 with specific mechanical and electrical properties. This alloy possesses good elasticity, enabling the elastic component 4 to return to its initial shape after repeated deformation. Its electrical conductivity meets the requirements for current transmission. The strength and fatigue resistance of the phosphor bronze alloy ensure the structural integrity of the elastic component 4 during long-term use.

[0080] When the fisheye terminal is inserted into the socket of the female terminal, the elastic element 4 of each fisheye assembly 2 will contact the inner wall of the female terminal. Since multiple fisheye assemblies 2 are continuously fixed on the fixing part 1, these assemblies are arranged sequentially along the insertion direction. During insertion, the leading fisheye assembly 2 first contacts the side wall of the female terminal and deforms, followed by subsequent fisheye assemblies 2 in sequence. This design achieves multi-level progressive establishment of electrical contact points.

[0081] Multiple fisheye assemblies 2 have spring-loaded members 4 that work together to form multiple parallel electrical contact points with the sidewall of the female terminal. Multiple elastic plates 5 on the phosphor bronze alloy spring-loaded members 4 further increase the effective contact area within each contact point. Current can flow in from the fixing part 1, pass through the connecting rods 3 of each fisheye assembly 2, be distributed to each spring-loaded member 4, and then be transmitted out through the multiple contact areas between the elastic plates 5 and the sidewall of the female terminal. This multi-path current transmission method reduces the current density at a single contact point.

[0082] This structure enhances the overall current-carrying capacity through the series fixation and parallel contact of multiple phosphor bronze alloy elastic components 4. The presence of multiple contact points also improves the reliability of the connection; if the resistance of one contact point increases due to contamination or fretting wear, the current can still be effectively transmitted through other contact points. The material properties of phosphor bronze alloy ensure that each elastic component 4 maintains stable contact pressure and conductivity under long-term insertion, removal, and vibration environments.

[0083] Example 11:

[0084] In this embodiment, the fixing part 1 is provided with a welding groove 17 and a fixing rib 18. The welding groove 17 is located on the surface of the fixing part 1, and its shape is adapted to the welding operation. The fixing rib 18 extends from the surface of the fixing part 1, and its structure cooperates with the plastic part during the injection molding process.

[0085] One end of the fixing part 1 is connected to an external circuit, and multiple fisheye assemblies 2 are continuously and fixedly installed on the other end. Each fisheye assembly 2 includes a connecting rod 3 and an elastic element 4. One end of the connecting rod 3 is fixedly connected to the fixing part 1, and the other end is fixedly connected to the elastic element 4. The elastic element 4 is provided with multiple elastic pieces 5, which are arranged in a specific direction.

[0086] The soldering groove 17 allows for smooth soldering operations. Soldering material can be filled into the soldering groove 17 to form a reliable electrical connection. The retaining rib 18 plays a role in the injection molding process; the plastic material wraps around the retaining rib 18, allowing the retaining part 1 to bond with the plastic part. This bonding method prevents the retaining part 1 from rotating or moving within the plastic part.

[0087] When the fisheye terminal is inserted into the female terminal, the elastic piece 5 of the elastic element 4 contacts the inner wall of the female terminal. Multiple fisheye assemblies 2 sequentially form electrical contacts with the inner wall of the female terminal. Because the fisheye assemblies 2 are continuously and fixedly installed, current can be transmitted through multiple contact points. This multi-stage progressive contact method improves the current transmission capability.

[0088] The structure of the fixing part 1 ensures the positional stability of the fisheye assembly 2. The welding groove 17 and the fixing rib 18 enhance the reliability of the overall structure from both welding and mechanical fixing aspects, respectively. In a vibration environment, the fit between the fixing part 1 and the plastic part prevents loosening and maintains the stability of the electrical contact.

[0089] Throughout the operation, current flows in from the fixing part 1 and is transmitted to the elastic member 4 through the connecting rod 3. The elasticity of the elastic piece 5 maintains contact pressure with the inner wall of the female terminal. Multiple fisheye assemblies 2 form parallel contact paths, reducing contact resistance and improving current carrying capacity. The design of the fixing part 1 allows the fisheye terminal to adapt to high-current applications.

[0090] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0091] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A multi-stage progressive contact elastic structure for a fisheye terminal, comprising a fixing part, characterized in that, The fixing part is continuously and fixedly installed with multiple fisheye components. Each fisheye component includes a connecting rod, and the connecting rod is fixedly installed with an elastic element. The elastic element is provided with multiple elastic pieces.

2. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 1, characterized in that, Both the fixing part and the connecting rod are provided with connecting seats, the connecting seats are provided with screw holes, and the connecting rod is provided with a first stud.

3. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 2, characterized in that, The connector has a fixing pattern.

4. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 2, characterized in that, The connector is provided with a fixing groove.

5. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 2, characterized in that, The connecting seat is symmetrically provided with side planes.

6. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 1, characterized in that, A spring is fixedly installed on the connecting rod, and a sliding element is provided between the spring and the elastic element.

7. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 1, characterized in that, The connecting rod is fixedly mounted with a rubber component, which has a protrusion that abuts against the elastic sheet.

8. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 1, characterized in that, The connecting rod is fixedly installed with a plug, and the plug is provided with a second stud.

9. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 1, characterized in that, The elastic element is made of phosphor bronze alloy.

10. The multi-stage progressive contact elastic structure of the fisheye terminal according to claim 1, characterized in that, The fixing part is provided with a welding groove and a fixing rib.

Images