Elastic electronic connector throughable by high frequency

Abstract

The high-frequency passable flexible electronic connector of the present invention includes a first shielding shell, an insulating component, a flexible signal terminal, and an inner shielding shell. The flexible signal terminal includes a fixing rod, an elastic element, and a contact element. The fixing rod has a sliding cavity for the contact element to slide. The first shielding shell has a locking cavity. The insulating component is installed in the locking cavity. The insulating component is used to cover the flexible signal terminal and lock the installation position of the fixing rod. The insulating component has an extension section extending out of the locking cavity. The insulating component has a connecting enclosure cavity, a mating cavity, and a mating hole sequentially formed along the axial direction. The mating cavity and the mating hole are both located inside the extension section. The inner shielding shell is sleeved on the outside of the extension section. The contact element has a mating abutment at the end near the mating hole, which is located outside the sliding cavity. The high-frequency passable flexible electronic connector of the present invention effectively stabilizes impedance and is suitable for high-frequency signal transmission, has high contact stability, is wear-resistant and durable, and has a long service life.

Description

Technical Field

[0001] This invention relates to the field of connector manufacturing, and in particular to a flexible electronic connector capable of transmitting high frequencies. Background Technology

[0002] The core structure of conventional electronic connectors mainly consists of three components: connecting terminals, insulating substrate, and shielding shell. These are the basic components for realizing the conduction and transmission of electronic signals and are currently widely used in signal docking scenarios of various electronic devices. As disclosed in the existing patent CN121507454A, the traditional connector structure often adopts an integrated claw structure for its contact terminals. This structure has significant performance defects in actual insertion and removal, making it difficult to adapt to the stable transmission requirements of high-frequency signals.

[0003] From the perspective of contact friction and wear characteristics and operating conditions, the traditional integrated claw structure has inherent drawbacks. During connector mating, only a sliding fit is formed between the claw opening and the mating terminal, and lateral compression and relative sliding friction are continuously generated during the mating action. With the continuous increase of mating cycles, the plating layer in the contact area of ​​the claw is easily worn away and worn through, causing the protective layer at the terminal contact interface to fail, directly resulting in a sharp increase in connector contact impedance. Abnormal impedance fluctuations will further cause many performance problems, not only significantly reducing the stability and reliability of terminal contact, but also severely degrading the high-frequency transmission characteristics of the connector, leading to problems such as signal attenuation, transmission distortion, and increased interference.

[0004] At the same time, traditional integrated claw plates rely entirely on their own metal elastic deformation to clamp and position the mating terminals. During long-term repeated insertion and removal operations, the claw plates continuously undergo elastic deformation and reset, which easily leads to metal fatigue, resulting in attenuation of elastic clamping force and reduction of deformation reset accuracy. Ultimately, this causes a significant reduction in the service life of the connector insertion and removal, severely limiting the equipment adaptability and versatility of the application scenarios.

[0005] In summary, traditional integrated claw connectors generally suffer from core defects such as poor wear resistance, low durability, and insufficient stability in high-frequency signal transmission, which cannot meet the signal transmission requirements of high-frequency, high-speed, high-stability, and long-life applications in today's high-end electronic devices.

[0006] Given the many shortcomings of existing technologies, there is an urgent need to develop a flexible electronic connector that is compatible with high-frequency signal transmission, has high contact stability, is wear-resistant and durable, and has a long service life. Summary of the Invention

[0007] The purpose of this invention is to provide a flexible electronic connector that can pass high frequencies, effectively stabilizes impedance, is suitable for high-frequency signal transmission, has high contact stability, is wear-resistant and durable, and has a long service life.

[0008] To achieve the above objectives, the present invention provides a high-frequency passable flexible electronic connector comprising a first shielding shell, an insulating component, a flexible signal terminal, and an inner shielding shell. The flexible signal terminal includes a fixing rod, an elastic element, and a contact element. The fixing rod has a sliding cavity for the contact element to slide in. The elastic element is built into the sliding cavity and elastically compressed between the contact element and the inner wall of the sliding cavity, so that the contact element always tends to extend relative to the fixing rod. The first shielding shell has a locking cavity, and the insulating component is installed in the locking cavity. The insulating component is used to cover the flexible signal terminal. The terminal locks the mounting position of the fixing rod. The insulating assembly has an extension section extending out of the locking cavity. The insulating assembly has a connected wrapping cavity, a mating cavity, and a mating hole sequentially opened along the axial direction. The wrapping cavity is used to cover the fixing rod. The mating cavity is used for the contact member to mate with the mating part. The mating hole is used for the mating part to be inserted. The mating cavity and the mating hole are both located inside the extension section. The inner shielding shell is sleeved on the outside of the extension section. The end of the contact member near the mating hole has a stop for mating. The stop is located outside the sliding cavity.

[0009] Preferably, the inner diameter of the mating hole is smaller than the inner diameter of the mating cavity, and the outer diameter of the maximum cross-section of the abutment is larger than the inner diameter of the mating hole, so that the abutment is confined within the mating cavity.

[0010] Preferably, the contact surface of the abutment is a plane or an arc surface that is recessed inward along the direction away from the insertion hole.

[0011] Preferably, a locking assembly is provided between the inner shielding shell and the protruding section, wherein one of the inner shielding shell and the protruding section is provided with a locking groove, and the other of the inner shielding shell and the protruding section is provided with a locking protrusion.

[0012] Preferably, the insulating assembly includes a first insulator and a second insulator. One end of the locking cavity protrudes inward along the axial direction to form a limiting boss. The middle part of the fixing rod protrudes outward along the radial direction to form a positioning part. The first insulator covers the outside of the elastic signal terminal. The outer side of the first insulator clamps and limits the first insulator between the limiting boss and the positioning part along the axial direction. The second insulator covers the outside of the elastic signal terminal. One axial end of the outer side of the second insulator abuts against the positioning part. The other axial end of the outer side of the second insulator engages with the end of the locking cavity away from the limiting boss. The protruding section extends from the first insulator outward from the locking cavity. The insertion hole and the mating cavity are both provided in the first insulator. The first insulator and the second insulator are each provided with a wrapping cavity.

[0013] Preferably, the first insulator further includes an outwardly protruding abutting section, the protruding section and the outwardly protruding abutting section are connected end to end in sequence, the protruding section forms the mating hole and the mating cavity, the outwardly protruding abutting section forms the enclosing cavity, the limiting boss is an annular structure, the outer diameter of the protruding section is smaller than the inner diameter of the limiting boss, the maximum outer diameter of the outwardly protruding abutting section is larger than the inner diameter of the limiting boss, so that the protruding section passes through the limiting boss and extends out of the locking cavity, the outwardly protruding abutting section abuts against the limiting boss on one axial side, and the outwardly protruding abutting section abuts against the positioning part on the other axial side.

[0014] Preferably, the end wall of the socket opposite to the elastic signal terminal forms a guide slope that opens outward from the inside of the socket.

[0015] Preferably, the first shielding shell extends outward to form a guide plate, the guide plate is disposed around the outside of the protruding section, a clamping gap is formed between the guide plate and the outer wall of the protruding section, the guide plate extends toward the protruding section to form a first clamping protrusion, the protruding section extends toward the guide plate to form a second clamping protrusion, and the first clamping protrusion and the second clamping protrusion are arranged alternately along the axial direction.

[0016] Preferably, the second insulator includes a head abutting section, a first convex section, a concave section, and a second convex section connected end to end. The head abutting section, the first convex section, the concave section, and the second convex section together form a cavity for enclosing the elastic signal terminal. The head abutting section abuts axially against the positioning part. The second convex section engages with the locking cavity. The outer diameters of the first and second convex sections are equal to the inner diameter of the locking cavity. The outer diameters of the head abutting section and the concave section are smaller than the inner diameter of the locking cavity, so that a reserved gap is formed between the head abutting section and the locking cavity, and between the concave section and the locking cavity.

[0017] Preferably, the outer side wall of the second insulator has a locking protrusion, and the inner wall of the locking cavity has a locking recess corresponding to the locking protrusion, and the locking protrusion and the locking recess engage in a locking fit.

[0018] Preferably, the high-frequency-passing flexible electronic connector further includes a second shielding shell, one axial end of which engages with the first shielding shell, and the other axial end of the second shielding shell has a through hole for the cable connected to the flexible signal terminal to pass through. A third insulator is installed inside the second shielding shell, and a cavity structure is formed inside the third insulator to accommodate the flexible signal terminal and the cable.

[0019] Preferably, the high-frequency-passing flexible electronic connector further includes a housing, which includes a bottom shell and a cover plate. The bottom shell has a mounting cavity for accommodating the first shielding shell, the second shielding shell, and the flexible signal terminal. The bottom shell has a mating hole corresponding to the mounting cavity. The contact of the flexible signal terminal is disposed adjacent to the mating hole. The mating hole is directly opposite to and communicates with the mating hole. The cover plate covers the side of the mounting cavity opposite to the mating hole to lock the first shielding shell, the second shielding shell, the first insulator, the second insulator, the third insulator, the inner shielding shell, and the flexible signal terminal inside the mounting cavity. The cover plate has a through hole for the cable connected to the flexible signal terminal to pass through.

[0020] Compared with the prior art, the specific beneficial effects of this invention are as follows: 1. Optimized contact friction significantly improves wear resistance and service life, resulting in higher contact reliability: This invention adopts an axially sliding contact structure with built-in elastic elements, abandoning the lateral compression and line contact sliding friction of traditional claw structures. Only minor axial sliding friction exists during the docking process, effectively reducing terminal contact surface pressure and plating wear. This avoids problems such as plating wear-through, contact impedance spikes, and contact failure after long-term insertion and removal, stabilizing contact impedance and adapting to high-frequency transmission scenarios. Simultaneously, relying on the pre-compressed elastic element within the sliding cavity to provide continuous and stable elastic compensation, the contact area does not undergo repeated plastic deformation, completely eliminating the metal fatigue defects of traditional claw structures and significantly improving product insertion and removal durability. Under high-frequency vibration conditions, this structure can always maintain a tight docking state, eliminating the risk of loose contact or intermittent connection, and stably adapting to high-frequency transmission working environments.

[0021] 2. Achieving continuous impedance matching throughout the entire connection range, significantly optimizing high-frequency transmission performance: During the axial sliding mating process of the terminals, air cavities exist at the contact points and mating parts, directly increasing local impedance and failing to meet the requirements of high-frequency transmission. This invention addresses this by installing an inner shielding shell outside the extended section of the insulating component, forming a fully enclosed shielding structure over the terminal mating area. This effectively fills the air cavities generated after the contact points are compressed and retracted, solving the impedance abrupt changes and signal reflection defects caused by cavities in traditional structures. Simultaneously, by precisely matching the dimensions of the inner shielding shell, the characteristic impedance of the cavity section can be precisely controlled, ensuring continuous impedance matching of the overall signal transmission path under any compression stroke of the contact points. This eliminates high-frequency signal loss and reflection problems at the source, guaranteeing stable transmission of high-speed, high-frequency signals in the fully mated state. In summary, the axial sliding contact structure and the inner shielding shell work together synergistically to ensure the high-frequency transmission stability and contact reliability of the connector.

[0022] 3. Double-layer shielding structure with excellent electromagnetic shielding effect: The present invention relies on the first shielding shell and the inner shielding shell covering the outside of the protruding section to form a double-layer shielding system, which can isolate external electromagnetic interference in all directions, while suppressing signal crosstalk inside the connector, greatly improving the overall electromagnetic shielding performance, further purifying the high-frequency signal transmission environment, and effectively ensuring the stability and purity of high-frequency signal transmission. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the high-frequency flexible electronic connector of the present invention.

[0024] Figure 2 yes Figure 1 A cross-sectional view of a flexible electronic connector capable of transmitting high frequencies.

[0025] Figure 3 This is a three-dimensional structural diagram of the high-frequency flexible electronic connector of the present invention after the bottom shell and the cover plate are separated.

[0026] Figure 4 yes Figure 3 A three-dimensional structural diagram of a high-frequency flexible electronic connector hidden behind a cover plate.

[0027] Figure 5 yes Figure 4 A three-dimensional structural diagram of a high-frequency flexible electronic connector in a disassembled state.

[0028] Figure 6 This is a three-dimensional structural diagram of the high-frequency-passing flexible electronic connector of the present invention after concealing the bottom shell and cover plate.

[0029] Figure 7 yes Figure 6 An exploded view of a flexible electronic connector capable of transmitting high frequencies.

[0030] Figure 8 yes Figure 6 A cross-sectional view of a flexible electronic connector capable of transmitting high frequencies.

[0031] Figure 9 yes Figure 7 A three-dimensional structural diagram of a high-frequency flexible electronic connector after the second shielding shell is hidden.

[0032] Figure 10 yes Figure 9 Cross-sectional view.

[0033] Figure 11 This is a cross-sectional view of the high-frequency flexible electronic connector of the present invention after the second shielding shell is hidden and after it is mated with the mating end.

[0034] Figure 12This is a cross-sectional view of the high-frequency flexible electronic connector of the present invention after the second shielding shell is hidden and before it is mated with the mating end. Detailed Implementation

[0035] To illustrate the technical content, structural features, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0036] Please see Figures 1 to 12 This invention discloses a flexible electronic connector 100 that can transmit high frequencies, which is mainly suitable for high-frequency and high-speed signal transmission scenarios. It has the characteristics of long wear resistance and life, continuous and stable impedance, excellent shielding performance and strong assembly versatility.

[0037] The high-frequency-passing flexible electronic connector 100 of the present invention includes a first shielding shell 1, an insulating component 2, a flexible signal terminal 3, and an inner shielding shell 4. The flexible signal terminal 3 includes a fixing rod 31, an elastic element 32, and a contact element 33. The fixing rod 31 has a sliding cavity 311 for sliding the contact element 33. The contact element 33 is axially slidably mounted inside the sliding cavity 311. The contact element 33 includes a sliding rod 33b and a limiting post 33a. The limiting post is connected to one end of the sliding rod and is limited within the sliding cavity 311. The outer diameter of the limiting post is larger than that of the sliding rod. The sliding cavity 311 has a clearance hole 33c for the sliding rod 33b to extend out. The elastic element 32 is built into the sliding cavity 311 and is elastically compressed between the contact element 33 and the inner wall of the sliding cavity 311, so that the contact element 33 always has a tendency to extend relative to the fixing rod 31. Under normal conditions, the elastic element 32 continuously applies a pushing force to the contact element 33, so that the contact element 33 always has an elastic tendency to extend outward relative to the fixed rod 31. This allows the connector 100 to achieve adaptive elastic contact during mating, ensuring tight contact and reliable fit, and effectively adapting to assembly tolerances and vibration conditions.

[0038] Please see Figures 10 to 12The first shielding shell 1 has a locking cavity 11, and the insulating component 2 is installed inside the locking cavity 11. The insulating component 2 is used to cover the elastic signal terminal 3 and lock the installation position of the fixing rod 31. The insulating component 2 has an extension section 242 extending out of the locking cavity 11. The insulating component 2 has a connecting wrapping cavity 21, a docking cavity 22, and a mating hole 23 sequentially opened along the axial direction to form a through docking transmission channel. Among them, the wrapping cavity 21 is used to cover the fixing rod 31 to realize the positioning and fixation of the main body of the elastic signal terminal 3; the mating hole 23 is used for the external mating part 5 to be inserted and docked; the docking cavity 22 is used to provide adaptation space for the extension and retraction movement of the contact 33 and the docking and cooperation with the external mating part 5. The docking cavity 22 and the mating hole 23 are both located inside the extension section 242. The inner shielding shell 4 is coaxially sleeved on the outside of the extension section 242 to realize full coverage shielding protection of the high-frequency docking area of ​​the elastic signal terminal 3, effectively optimizing the high-frequency transmission environment. The contact 33 has a top 331 for docking at one end near the insertion hole 23. The top 331 is externally placed in the sliding cavity 311 and can directly and precisely fit into contact with the external insertion part 5, ensuring a short signal conduction path and low loss, which is suitable for high-frequency and high-speed transmission requirements.

[0039] This invention employs an axial sliding contact structure built into the elastic element 32, abandoning the frictional form of lateral extrusion line contact of traditional claw plates. The mating process generates only minute axial sliding friction, effectively reducing contact surface pressure and plating wear, and avoiding plating wear-through, impedance spikes, and contact failures caused by long-term insertion and removal. Simultaneously, the pre-compressed elastic element 32 provides continuous elastic compensation, eliminating plastic deformation at the contact points, preventing metal fatigue, and significantly improving insertion and removal durability and contact stability under vibration conditions, stabilizing contact impedance to adapt to high-frequency transmission scenarios. Furthermore, the inner shielding shell 4, fitted outside the extended section 242 of the insulating component 2, effectively fills the air cavity formed by the compression and retraction of the contact element 33. Through precise adjustment of characteristic impedance via size matching, it eliminates impedance abrupt changes, high-frequency signal reflection, and transmission loss problems caused by cavities in traditional structures, achieving continuous impedance matching of the transmission path throughout the entire insertion and removal stroke. The axial sliding contact structure and the inner shielding shell 4 work together to ensure the long-term stable high-frequency and high-speed transmission performance of the connector 100 from both contact reliability and high-frequency impedance characteristics perspectives.

[0040] Please see Figures 11 to 12 The inner diameter of the insertion hole 23 is smaller than the inner diameter of the mating cavity 22, while the maximum cross-sectional outer diameter of the abutment 331 is larger than the inner diameter of the insertion hole 23. This two-stage diameter difference forms a built-in limiting structure, ensuring that the abutment 331 is stably confined within the mating cavity 22. This structure effectively prevents the contact 33 from dislodging or falling out of the insertion hole 23 under the pushing action of the elastic member 32, ensuring that the contact 33 remains within its effective extension and contraction range, significantly improving the structural integrity of the terminal and the long-term stability of the mating fit.

[0041] Please see Figures 11 to 12 The contact surface of the top abutment 331 can be configured as a planar structure or as an inwardly concave arc surface along the direction away from the insertion hole 23. Both contact surface structures can ensure stable contact area and uniform contact force, avoid local stress concentration and rapid local wear of the plating, stabilize contact impedance, and ensure the stability of high-frequency signal transmission from the contact level. When the contact surface of the top abutment 331 is planar, the top abutment 331 is configured as a planar surface; when the contact surface of the top abutment 331 is an inwardly concave arc surface, the top abutment 331 is configured as an outwardly convex arc surface.

[0042] Please see Figures 11 to 12 A locking assembly 6 is provided between the inner shielding shell 4 and the protruding section 242 of the insulating component 2. Specifically, one of the inner shielding shell 4 and the protruding section 242 has a slot 61, and the other has a corresponding protrusion 62. During assembly, the precise engagement of the slot 61 and the protrusion 62 enables the inner shielding shell 4 and the protruding section 242 to be quickly positioned and fixedly assembled without the need for auxiliary processes such as welding and gluing. The assembly is convenient and efficient, and the connection is firm and reliable. It can effectively prevent the inner shielding shell 4 from loosening, shifting, or tilting under insertion, removal, and vibration conditions, and continuously ensure the integrity and consistency of the shielding structure in the docking area, thus stabilizing the high-frequency shielding performance.

[0043] Please see Figures 10 to 12 The insulating assembly 2 specifically includes a first insulator 24 and a second insulator 25, which are assembled separately, realizing a segmented covering and layered limiting assembly structure. One end of the locking cavity 11 protrudes inward along the axial direction to form an annular limiting boss 111, and the middle part of the fixing rod 31 protrudes outward along the radial direction to form an annular positioning part 312. The first insulator 24 covers the outer side of the front section of the elastic signal terminal 3, and the outer surface of the first insulator 24 is axially clamped and limited between the limiting boss 111 and the positioning part 312 of the fixing rod 31, forming a bidirectional clamping and limiting, completely restricting the axial movement of the first insulator 24. The second insulator 25 covers the outer side of the elastic signal terminal 3, and one axial end of the outer surface of the second insulator 25 abuts against and fits against the positioning part 312, while the other axial end of the outer surface of the second insulator 25 engages with the end of the locking cavity 11 away from the limiting boss 111, realizing a rear-end closed limiting. The protruding section 242 extends from the first insulator 24 outward to the locking cavity 11. The insertion hole 23 and the docking cavity 22 are both provided in the first insulator 24. The first insulator 24 and the second insulator 25 are each provided with a wrapping cavity 21, and the wrapping cavity 21 of the first insulator 24 and the wrapping cavity 21 of the second insulator 25 are independent of each other.

[0044] Please see Figures 10 to 12The first insulator 24 also includes an outwardly protruding abutment section 241. The protruding section 242 is connected to the outwardly protruding abutment section 241 head to tail, forming an integral structure with high coaxiality. The protruding section 242 has a mating hole 23 and a mating cavity 22 formed inside, and the outwardly protruding abutment section 241 has a wrapping cavity 21 adapted to the fixing rod 31 formed inside. The limiting boss 111 has a ring-shaped structure. The outer diameter of the protruding section 242 is smaller than the inner diameter of the limiting boss 111, allowing it to pass smoothly through the limiting boss 111 and extend outward into the locking cavity 11, ensuring that the mating area is exposed to achieve normal insertion and engagement. The maximum outer diameter of the outwardly protruding abutment section 241 is larger than the inner diameter of the limiting boss 111, preventing it from passing through the limiting boss 111 to form a mechanical limit. After assembly, the convex abutting section 241 abuts against the inner wall of the limiting boss 111 on the axial front side and against the positioning part 312 of the fixing rod 31 on the axial rear side. Together with the bidirectional clamping structure, it completely locks the axial position of the first insulator 24, preventing problems such as movement, displacement, and loosening during long-term use.

[0045] Please see Figures 10 to 12 The front wall of the socket 23, which is away from the elastic signal terminal 3, has a guide slope 231 that gradually opens from the inside out, forming a flared guide structure. During the mating assembly of the connector 100, the guide slope 231 can accurately guide and automatically correct the external mating part 5, effectively reducing the mating resistance and avoiding problems such as misalignment, hard contact, and jamming during manual or mechanical mating. This significantly improves the smoothness of mating and the overall assembly accuracy, making it suitable for automated mass production assembly and frequent mating scenarios.

[0046] Please see Figures 1 to 11 The first shielding shell 1 extends forward to form several guide plates 12 evenly spaced around the outer side of the protruding section 242. Multiple sets of guide plates 12 together form an approximately cylindrical peripheral guiding structure. A suitable clamping gap 13 is reserved between the guide plates 12 and the outer wall of the protruding section 242. The guide plates 12 extend towards the inner side of the protruding section 242 to form a first clamping protrusion 121, and the outer wall of the protruding section 242 extends towards the guide plates 12 to form a second clamping protrusion 41. The first clamping protrusion 121 and the second clamping protrusion 41 are staggered along the axial direction. This structure can achieve peripheral radial limiting during docking, effectively restricting the radial sway of the insertion part 5 and further improving the docking coaxiality. At the same time, the cooperation between the staggered protrusions and the clamping gap 13 can achieve micro-elastic clamping positioning, making the insertion fit more tight and stable, further enhancing the structural reliability under high-frequency docking conditions.

[0047] Please see Figures 1 to 11The second insulator 25 includes a head-abutting section 251, a first outwardly protruding section 252, a concave section 253, and a second outwardly protruding section 254, all integrally formed. The head-abutting section 251, the first outwardly protruding section 252, the concave section 253, and the second outwardly protruding section 254 together form a cavity 21 for enclosing the elastic signal terminal 3. The head-abutting section 251 axially abuts against the positioning part 312, and the second outwardly protruding section 254 engages with the locking cavity 11. The outer diameters of the first outwardly protruding section 252 and the second outwardly protruding section 254 are both equal to the inner diameter of the locking cavity 11, while the outer diameters of the head-abutting section 251 and the concave section 253 are both smaller than the inner diameter of the locking cavity 11, thus creating a reserved gap between the head-abutting section 251 and the locking cavity 11, and between the concave section 253 and the locking cavity 11. This gap structure can effectively avoid large-area rigid contact between the second insulator 25 and the first shielding shell 1, release assembly extrusion stress, significantly reduce assembly interference between terminals and insulators, and between insulators and shielding shells, reduce assembly damage, incomplete assembly and other defects, improve assembly yield, and at the same time provide redundant space for fine-tuning and adapting the specifications of components.

[0048] Please see Figures 10 to 12 The outer wall of the second insulator 25 has an integrated engaging protrusion 255 protruding outward, and the inner wall of the locking cavity 11 has a matching engaging recess 112 corresponding to the position of the engaging protrusion 255. During assembly, the engaging protrusion 255 is precisely engaged and fixed inside the engaging recess 112. The snap-fit ​​structure realizes the circumferential and axial positioning of the second insulator 25 and the first shielding shell 1, further improving the assembly firmness of the second insulator 25, effectively preventing it from loosening, rotating, or shifting, and ensuring the consistency and stability of the overall assembly structure.

[0049] Please see Figures 10 to 12 The connector 100 of the present invention also includes a second shielding shell 7. The axial front end of the second shielding shell 7 is engaged with the rear end of the first shielding shell 1 to form a front-to-back combined double-layer shielding shell structure, which greatly improves the overall electromagnetic shielding performance. The axial rear end of the second shielding shell 7 has a through hole 71, which allows the cable 34 connected to the tail of the elastic signal terminal 3 to pass through smoothly. At the same time, the second shielding shell 7 is equipped with a third insulator 26. The third insulator 26 has a fitted cavity structure inside, which can stably accommodate the tail of the elastic signal terminal 3 and the connecting cable 34, realizing insulation isolation and orderly positioning, avoiding the shaking and wear of the cable 34, ensuring the stability of the rear wiring structure, and the tail of the second shielding shell 7 and the connecting cable 34 are connected by a solder ring 72, which further improves the wiring stability.

[0050] Please see Figures 1 to 11The high-frequency flexible electronic connector 100 also includes a housing, which comprises a bottom shell 8 and a cover plate 9. The bottom shell 8 has a mounting cavity 81 for accommodating a first shielding shell 1, a second shielding shell 7, and a flexible signal terminal 3. A mating hole 82 is provided on the bottom shell 8 corresponding to the mounting cavity 81. The contact 33 of the flexible signal terminal 3 is disposed adjacent to the mating hole 82, and the mating hole 23 is directly opposite and connected to the mating hole 82. The cover plate 9 covers the side of the mounting cavity 81 opposite to the mating hole 82, locking the first shielding shell 1, the second shielding shell 7, the first insulator 24, the second insulator 25, the third insulator, the inner shielding shell 4, and the flexible signal terminal 3 inside the mounting cavity 81, achieving full-component enclosed protection and preventing internal components from being exposed, loosened, or damaged. A through hole 91 is provided in the middle of the cover plate 9, allowing the cable 34 connected to the terminal tail to be neatly passed outwards, achieving stable signal output.

[0051] During assembly, the bottom shell 8 has several locking protrusions along its edge, and the cover plate 9 has matching locking holes (not shown) corresponding to each locking protrusion. By engaging the locking protrusions (not shown) with the locking holes (not shown), the bottom shell 8 and the cover plate 9 can be quickly fastened together without the need for screws, glue, or other auxiliary fasteners. The assembly process is simple, efficient, and suitable for mass production. Furthermore, the snap-on detachable structure facilitates later disassembly, inspection, parts replacement, and maintenance, effectively reducing product operation and maintenance costs.

[0052] The operation of the high-frequency-passing flexible electronic connector 100 of the present invention is as follows: The high-frequency flexible electronic connector 100 employs a split insulating assembly 2 composed of a first insulator 24 and a second insulator 25 to layer and fix the flexible signal terminal 3. This, along with a first shielding shell 1 and a second shielding shell 7, forms a double-layer shielding structure. The fastening mechanism of the components—including a snap-fit ​​assembly 6, snap-fit ​​protrusions 255 and snap-fit ​​recesses 112, and a bottom shell 8 and a cover plate 9—allows for rapid assembly and positioning without the need for welding or adhesive application. This assembly is convenient and structurally stable, effectively avoiding assembly interference and loosening issues. Under normal conditions, the elastic element 32 within the sliding cavity 311 of the flexible signal terminal 3 remains pre-compressed, continuously providing outward pushing force to the contact element 33. During mating, the external mating portion 5 is precisely guided into the mating cavity 22 via the guide slope 231 of the protruding section 242, compressing the contact element 33 and causing it to retract axially. The elastic element 32 then forms a continuous elastic compensation fit, replacing the traditional claw-plate lateral extrusion structure with an axial micro-friction contact method. This significantly reduces plating wear and eliminates metal fatigue and contact failure problems. Meanwhile, the two-stage aperture difference limiting structure formed by the insertion hole 23 and the mating cavity 22 can prevent the contact 33 from coming out. The guide plate 12 of the first shielding shell 1, together with the first clamping protrusion 121, the second clamping protrusion 41 and the clamping gap 13, can improve the coaxiality and tightness of the mating. During signal transmission, the top 331 of the contact 33 and the mating part 5 form a short-path, low-loss surface contact and conduction. The inner shielding shell 4, coaxially sleeved on the outside of the protruding section 242, can fill the air cavity generated by the expansion and contraction of the contact 33 throughout the process, accurately control the characteristic impedance, and eliminate impedance changes and high-frequency signal reflection loss. With the electromagnetic shielding effect of the double-layer shielding shell, the orderly protection of the cable 34 by the third insulator at the tail, and the fully enclosed protective structure of the outer shell, the connector 100 can effectively adapt to complex working conditions such as vibration and frequent insertion and removal, maintain stable contact impedance and continuous transmission path impedance throughout the process, and realize long-term, stable, and low-loss transmission of high-frequency and high-speed signals.

[0053] The present invention possesses several excellent and beneficial effects through the above structural design: First, the present invention adopts an axial sliding surface contact structure composed of a fixed rod 31, an elastic element 32, and a contact element 33, which abandons the traditional lateral extrusion line contact method. The docking only generates a small axial friction, which greatly reduces the wear of the terminal plating and avoids the problems of plating wear, impedance spike and contact failure caused by long-term insertion and removal. The continuous pre-compression compensation of the elastic element 32 ensures that there is no plastic deformation and no metal fatigue in the contact part, which significantly improves the insertion and removal durability and contact stability under vibration conditions, and ensures that the contact impedance is constant for a long time.

[0054] Secondly, by setting an inner shielding shell 4 coaxially on the outside of the extended section 242, the air cavity generated by the expansion and contraction of the contact 33 can be filled in real time, and the high-frequency characteristic impedance can be precisely controlled. This completely solves the defects of impedance change, signal reflection and large transmission loss in traditional structures, and achieves continuous impedance matching throughout the insertion and removal stroke. Combined with the double-layer shielding structure formed by the first shielding shell 1 and the second shielding shell 7, the electromagnetic shielding performance is greatly improved, ensuring low loss and high stability transmission of high-frequency and high-speed signals.

[0055] Third, the present invention adopts a fully detachable assembly structure with the slot 61 and the protrusion 62, the engagement protrusion 255 and the engagement recess 112, and the bottom shell 8 and the cover plate 9 engaging with each other. It does not require welding, glue application, or screws for fixation, making assembly efficient and quick, and suitable for mass production. At the same time, the gap structure of the second insulator 25 can release assembly stress, reduce assembly interference and pressure damage, improve assembly yield, and the detachable structure facilitates later maintenance and replacement, effectively reducing operation and maintenance costs.

[0056] Fourth, relying on the guide slope 231 of the insertion hole 23, the guide plate 12 of the first shielding shell 1, and the staggered first clamping protrusion 121 and second clamping protrusion 41, automatic alignment correction during docking is achieved, reducing insertion resistance and improving docking coaxiality and assembly accuracy. With the help of the limiting boss 111, the positioning part 312, the hole diameter difference limiting and other multi-level limiting structures, combined with the fully enclosed protective design of the outer shell, problems such as loosening, offset, and dislodgement of components and wear of cable 34 can be effectively prevented. The structure has high reliability and strong adaptability to working conditions. It can be widely used in harsh application scenarios such as high frequency and high speed, frequent insertion and removal, and complex vibration, and has strong versatility and practical value.

[0057] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention shall still fall within the scope of the present invention.

Claims

1. A flexible electronic connector that is passable for high frequencies, characterized in that, The system includes a first shielding shell, an insulating assembly, a flexible signal terminal, and an inner shielding shell. The flexible signal terminal includes a fixed rod, an elastic element, and a contact element. The fixed rod has a sliding cavity for the contact element to slide in. The elastic element is built into the sliding cavity and is elastically compressed between the contact element and the inner wall of the sliding cavity, so that the contact element always tends to extend relative to the fixed rod. The first shielding shell has a locking cavity, and the insulating assembly is installed in the locking cavity. The insulating assembly is used to cover the flexible signal terminal and lock the installation of the fixed rod. The insulating assembly has an extension section extending out of the locking cavity. Inside the insulating assembly, axially connected, are a wrapping cavity, a mating cavity, and a mating hole. The wrapping cavity covers the fixing rod, the mating hole allows the mating part to be inserted, and the mating cavity allows the contact member to mate with the mating part. Both the mating cavity and the mating hole are located inside the extension section. The inner shielding shell is fitted over the outside of the extension section. The contact member has a mating abutment at the end near the mating hole, and the mating abutment is externally located in the sliding cavity.

2. The flexible electronic connector of claim 1, wherein, The inner diameter of the insertion hole is smaller than the inner diameter of the mating cavity, and the outer diameter of the maximum cross-section of the abutment is larger than the inner diameter of the insertion hole, so that the abutment is confined within the mating cavity.

3. The flexible electronic connector of claim 1, wherein, The contact surface of the top abutment is either a plane or an arc surface that is concave inward along the direction away from the insertion hole.

4. The flexible electronic connector of claim 1, wherein, A locking assembly is provided between the inner shielding shell and the protruding section. One of the inner shielding shell and the protruding section is provided with a locking groove, and the other of the inner shielding shell and the protruding section is provided with a locking protrusion.

5. The flexible electronic connector of claim 1, wherein, The insulating assembly includes a first insulator and a second insulator. One end of the locking cavity protrudes inward along the axial direction to form a limiting boss. The middle part of the fixing rod protrudes outward along the radial direction to form a positioning part. The first insulator covers the outside of the elastic signal terminal. The outer side of the first insulator clamps and limits the first insulator between the limiting boss and the positioning part along the axial direction. The second insulator covers the outside of the elastic signal terminal. One axial end of the outer side of the second insulator abuts against and fits against the positioning part. The other axial end of the outer side of the second insulator is engaged with the end of the locking cavity away from the limiting boss. The protruding section extends from the first insulator outward from the locking cavity. The insertion hole and the mating cavity are both provided in the first insulator. The first insulator and the second insulator are each provided with a wrapping cavity.

6. The flexible electronic connector of claim 5, wherein, The first insulator further includes an outwardly protruding abutting section. The protruding section and the outwardly protruding abutting section are connected end to end in sequence. The protruding section forms the mating hole and the mating cavity. The outwardly protruding abutting section forms the enclosing cavity. The limiting boss is a ring-shaped structure. The outer diameter of the protruding section is smaller than the inner diameter of the limiting boss. The maximum outer diameter of the outwardly protruding abutting section is larger than the inner diameter of the limiting boss, so that the protruding section passes through the limiting boss and extends out of the locking cavity. The outwardly protruding abutting section abuts against the limiting boss on one axial side and against the positioning part on the other axial side.

7. The flexible electronic connector of claim 1, wherein, The end wall of the socket opposite to the elastic signal terminal forms a guide slope that opens outward from the inside of the socket.

8. The flexible electronic connector of claim 1, wherein, The first shield extends outward to form a guide plate, which is arranged around the outside of the protruding section. A clamping gap is formed between the guide plate and the outer wall of the protruding section. The guide plate extends toward the protruding section to form a first clamping protrusion, and the protruding section extends toward the guide plate to form a second clamping protrusion. The first clamping protrusion and the second clamping protrusion are arranged alternately along the axial direction.

9. The flexible electronic connector of claim 5, wherein, The second insulator includes a head abutting section, a first convex section, a concave section, and a second convex section connected end to end. The head abutting section, the first convex section, the concave section, and the second convex section together form a cavity for enclosing the elastic signal terminal. The head abutting section abuts axially against the positioning part. The second convex section engages with the locking cavity. The outer diameters of the first convex section and the second convex section are both equal to the inner diameter of the locking cavity. The outer diameters of the head abutting section and the concave section are both smaller than the inner diameter of the locking cavity, so that a reserved gap is formed between the head abutting section and the locking cavity, and between the concave section and the locking cavity.

10. The flexible electronic connector of claim 5, wherein, The outer wall of the second insulator has a locking protrusion, and the inner wall of the locking cavity has a locking recess corresponding to the locking protrusion. The locking protrusion and the locking recess engage with each other.

11. The flexible electronic connector of claim 1, wherein, It also includes a second shielding shell, one axial end of which engages with the first shielding shell, and the other axial end of the second shielding shell has a through hole for the cable connected to the elastic signal terminal to pass through. A third insulator is installed inside the second shielding shell, and a cavity structure is formed inside the third insulator to accommodate the elastic signal terminal and the cable.

12. The flexible electronic connector of claim 11, wherein, It also includes an outer casing, which includes a bottom shell and a cover plate. The bottom shell has an internal mounting cavity for accommodating the first shielding shell, the second shielding shell, and the elastic signal terminal. The bottom shell has a mating hole corresponding to the mounting cavity. The contact of the elastic signal terminal is disposed adjacent to the mating hole. The mating hole is directly opposite to and communicates with the mating hole. The cover plate covers the side of the mounting cavity opposite to the mating hole to lock the first shielding shell, the second shielding shell, the first insulator, the second insulator, the third insulator, the inner shielding shell, and the elastic signal terminal inside the mounting cavity. The cover plate has a through hole for the cable connected to the elastic signal terminal to pass through.

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