High-speed transmission I / O connector

Abstract

The invention relates to the field of connectors, in particular to a high-speed transmission I / O connector which comprises U-shaped conductive terminals arranged in an array mode, a holder and a packaging shell, the U-shaped conductive terminals are packaged on the inner side of the holder, the two ends of each U-shaped conductive terminal are each provided with a V-shaped elastic contact part, the two V-shaped elastic contact parts correspond to each other, and the U-shaped conductive terminals are arranged in the packaging shell. The high-speed transmission I / O connector is characterized in that a U-shaped conductive terminal is arranged in the holding frame, a wiring part is arranged at the bent position of the U-shaped conductive terminal, the packaging shell comprises a front insertion part and a rear main body part, the rear main body part is packaged on the outer side of the holding frame, and according to the high-speed transmission I / O connector, on one hand, a rubber block on the inner side of a V-shaped elastic contact part is tightly attached to the connecting position of an insertion groove and a containing groove to form a first plug; and on the other hand, the first arc-shaped surface of the V-shaped elastic contact part is in close contact with the second arc-shaped surface of the accommodating groove to form second blocking, so that dust and impurities can be effectively prevented from entering the accommodating groove through double protection, poor contact of the V-shaped elastic contact part caused by accumulation of foreign matters is avoided, and stable contact performance in long-term use is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of connectors, and more particularly to a high-speed transmission I / O connector. Background Technology

[0002] Existing high-speed transmission I / O connectors lack effective foreign object protection measures. Dust and impurities can easily enter the connector and accumulate at the contact points, leading to poor contact and affecting the stability and reliability of signal transmission. This problem is particularly prominent when used in harsh environments.

[0003] Many existing products have dimensional deviations in their contact parts, resulting in loose connections and gaps, which increases the risk of signal transmission interruption. Furthermore, the anti-detachment and wear-resistant design of the contacts may be insufficient, making them prone to detachment due to excessive deformation or severe wear during frequent mating and unmating, thus affecting the connector's lifespan. For example, the contact resistance of tin-plated contacts will significantly increase after repeated mating and unmating under vibration.

[0004] In some traditional high-speed I / O connectors, the conductive terminals and elastic contacts are separate structures, resulting in gaps and contact resistance. This can lead to significant signal attenuation during transmission, affecting transmission efficiency and quality. Furthermore, the multi-channel parallel transmission capability may be insufficient to meet the transmission requirements of high-speed I / O. Additionally, the connector's shielding may be inadequate, making it susceptible to external electromagnetic interference, which can also affect the integrity of high-speed signal transmission.

[0005] Therefore, it is necessary to provide a high-speed transmission I / O connector to solve the above-mentioned technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a high-speed transmission I / O connector.

[0007] This invention provides a high-speed transmission I / O connector, comprising an array of U-shaped conductive terminals, a retainer, and a housing. The U-shaped conductive terminals are encapsulated inside the retainer, and each end of the U-shaped conductive terminal has a V-shaped elastic contact portion, with the two V-shaped elastic contacts corresponding to each other. A wiring portion is provided at the bend of the U-shaped conductive terminal. The housing includes a front insertion portion and a rear main body portion. The rear main body portion is encapsulated outside the retainer, and the wiring portion passes through the housing. A insertion groove is embedded at the end of the front insertion portion, and a receiving groove for accommodating the V-shaped elastic contacts is provided within the front insertion portion, and the receiving groove is connected to the insertion groove. The V-shaped elastic contacts extend into the insertion groove, and a rubber block is adhesively fixed to the inner side of the V-shaped elastic contacts. When the connector is not inserted, the rubber block adhesively fixed to the inner side of the V-shaped elastic contacts will tightly fit the connection between the insertion groove and the receiving groove, forming a physical seal, effectively preventing dust, impurities, and other foreign objects from entering the receiving groove, and avoiding the accumulation of foreign objects affecting the subsequent contact performance of the V-shaped elastic contacts.

[0008] Preferably, the width of the rubber block and the V-shaped elastic contact portion is equal to the width of the receiving groove.

[0009] Preferably, the end of the V-shaped elastic contact is provided with an anti-dislodgement part, the V-shaped elastic contact is provided with a first arc-shaped surface, and the receiving groove is provided with a second arc-shaped surface that contacts and mates with the first arc-shaped surface. When the connector is not plugged in, the first arc-shaped surface contacts the second arc-shaped surface, forming a physical seal, effectively preventing dust, impurities, and other foreign objects from entering the receiving groove, and avoiding the accumulation of foreign objects that may affect the subsequent contact performance of the V-shaped elastic contact.

[0010] Preferably, the U-shaped conductive terminal and the V-shaped elastic contact are integrated into one piece. The side wall of the V-shaped elastic contact is provided with a strip groove that contacts the rubber block, so that the rubber block and the V-shaped elastic contact are more firmly bonded and less likely to separate, thus improving the sealing effect.

[0011] Preferably, the cage includes a front plate, a middle plate, and a rear plate, the tops and bottoms of the front plate, the middle plate, and the rear plate are connected by a transverse connecting part, and the front plate, the middle plate, the rear plate, and the transverse connecting part are an integral structure.

[0012] Preferably, the U-shaped conductive terminal includes an upper side and a lower side, and the ends of the upper side and the lower side are connected. The front ends of the upper side and the lower side are encapsulated at the upper and lower ends of the front end plate, the middle parts of the upper side and the lower side are encapsulated at the upper and lower ends of the middle plate, and the connection between the upper side and the lower side is encapsulated in the rear end plate.

[0013] After the external plug-in makes close contact with the V-shaped elastic contact, the signal or current is transmitted to the U-shaped conductive terminal through the V-shaped elastic contact. The two are integrated into one structure, which reduces contact resistance and signal loss. The signal is then conducted to the wiring part at the bend through the upper and lower parts of the U-shaped conductive terminal, and finally connected to the external line through the wiring part to complete the high-speed signal / current transmission.

[0014] The retainer encapsulates the front end, middle section, and connection point of the U-shaped conductive terminal via a front plate, middle plate, and rear plate, respectively. The front ends of the upper and lower sections are fixed to the front plate, the middle section to the middle plate, and the connection point to the rear plate, preventing the U-shaped conductive terminal from shifting due to vibration. The first positioning protrusion and first positioning groove of the retainer precisely mate with the second positioning protrusion and second positioning groove of the encapsulation shell, enabling rapid positioning and assembly and avoiding misalignment. The rear main body of the encapsulation shell covers the retainer, protecting the internal components from dust and impact; the front insertion section provides structural support for the insertion and mating.

[0015] Preferably, the lower side portion has a notch at one end near the upper side portion, and the wiring portion is formed by bending the material inside the notch in the lower side portion.

[0016] Preferably, the top and bottom of the retainer are provided with a first positioning protrusion and a first positioning groove, and the encapsulation shell is provided with a second positioning protrusion and a second positioning groove that cooperate with the first positioning protrusion and the first positioning groove.

[0017] Preferably, the notch is encapsulated within the rear end plate.

[0018] Preferably, the end of the insertion slot is chamfered. When the external adapter plug is inserted into the insertion slot, the chamfer at the end of the insertion slot guides the plug to enter smoothly, reducing insertion resistance. During the insertion process, the V-shaped elastic contact part is first squeezed, causing the V-shaped elastic contact part to deform. The V-shaped elastic contact part and the rubber block are bonded together by strong adhesive and will not separate.

[0019] Compared with related technologies, the present invention provides the following beneficial effects: 1. Prevention of foreign objects and sealing Double physical sealing to prevent foreign objects: In the unconnected state, on the one hand, the rubber block on the inner side of the V-shaped elastic contact tightly fits the connection between the insertion groove and the receiving groove, forming the first sealing; on the other hand, the first arc surface of the V-shaped elastic contact tightly contacts the second arc surface of the receiving groove, forming the second sealing. The double protection can effectively prevent dust and impurities from entering the receiving groove, avoid the accumulation of foreign objects that may cause poor contact of the V-shaped elastic contact, and ensure stable contact performance during long-term use. The rubber block provides a long-lasting seal: the grooves on the sidewalls of the V-shaped elastic contact increase the contact area with the rubber block, and the strong adhesive bonding makes the connection between the rubber block and the V-shaped elastic contact more secure and less prone to separation; even when the plug is inserted and squeezed, the two remain stably connected, preventing the rubber block from shifting or falling off and causing seal failure, thus further extending the effective period of the dustproof seal. II. Improve contact reliability and component durability Strong contact fit and adaptability: When the plug is inserted, the V-shaped elastic contact part can deform under pressure. Its elastic structure can adapt to the small size deviation of the plug and ensure a tight fit with the outer wall of the plug. At the same time, the rubber block deforms synchronously with the V-shaped elastic contact part, which not only buffers the impact of the plug on the contact part, but also helps to maintain the contact pressure, reduce the contact gap, and reduce the risk of signal transmission interruption. Anti-detachment and wear-resistant design extends service life: The anti-detachment part at the end of the V-shaped elastic contact part can prevent it from falling off the receiving groove due to excessive deformation, thus preventing damage to the contact structure; the contact fit between the first arc surface and the second arc surface provides good support for the V-shaped elastic contact part.

[0020] III. Optimize high-speed transmission performance and reduce signal loss Low-impedance transmission reduces signal attenuation: The U-shaped conductive terminal and the V-shaped elastic contact adopt an integrated structure, eliminating the splicing gap and contact resistance between the two, and reducing resistance loss during signal transmission; at the same time, the array-arranged U-shaped conductive terminals can realize multi-channel parallel transmission, greatly improving data transmission efficiency and meeting the transmission requirements of high-speed I / O. Stable and interference-free transmission path: The cage precisely fixes the front end, middle part and connection of the U-shaped conductive terminal through the front end plate, middle plate and rear end plate to prevent the U-shaped conductive terminal from shifting due to vibration and causing the transmission path to deviate; the rear body of the encapsulation shell wraps the cage, which can isolate external electromagnetic interference and environmental impurities and ensure the integrity of high-speed signal transmission. IV. Enhance structural stability and improve assembly efficiency Integrated structure enhances overall rigidity: The front, middle, and rear plates of the cage and the transverse connecting parts are integrated into one structure, which has high overall strength and can effectively resist external impacts; the upper and lower parts of the U-shaped conductive terminals are respectively encapsulated in the corresponding positions of the cage, forming a stable internal support structure to prevent the terminals from deforming or shifting. Precise positioning and assembly reduce errors: The first positioning protrusion and the first positioning groove at the top and bottom of the cage precisely match the second positioning protrusion and the second positioning groove inside the package shell, enabling rapid alignment and assembly of the cage and the package shell, reducing manual adjustment time, reducing assembly errors, and improving production efficiency; at the same time, the notch is sealed inside the rear end plate, further reinforcing the connection structure between the wiring part and the U-shaped conductive terminal, and preventing breakage at the wiring point. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front side of the overall structure of the present invention; Figure 2 This is a rear view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the cage and U-shaped conductive terminal structure of the present invention; Figure 4 This is a schematic diagram of the U-shaped conductive terminal structure of the present invention; Figure 5 This is a schematic diagram of the receiving groove structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the packaging shell of the present invention.

[0022] Labels in the diagram: 1. U-shaped conductive terminal; 2. Retainer; 3. Encapsulation shell; 4. V-shaped elastic contact; 5. Wiring part; 6. Front insertion part; 7. Rear main body part; 8. Insertion groove; 9. Receiving groove; 10. Rubber block; 11. Anti-detachment part; 12. First arc-shaped surface; 13. Second arc-shaped surface; 14. Strip groove; 15. Front end plate; 16. Middle plate; 17. Rear end plate; 18. Lateral connection part; 19. Upper side part; 20. Lower side part; 21. Notch; 22. First positioning protrusion; 23. First positioning groove; 24. Second positioning protrusion; 25. Second positioning groove; 26. Chamfer. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1 to 6 A high-speed transmission I / O connector, the core structure of which includes an array of U-shaped conductive terminals 1, an integrated retainer 2, and a housing 3, which are precisely assembled to form a stable transmission and protection system: I. Core Structure and Assembly Relationship 1. Structure and positioning of U-shaped conductive terminal 1 The U-shaped conductive terminal 1 is made of high-conductivity nickel-plated brass with a conductivity ≥95% IACS and a plating thickness of 5-10μm. It is evenly arrayed along the length of the retainer 2, with 8-16 groups possible. It is integrally encapsulated with the inside of the retainer 2 through injection molding to ensure the terminal remains secure. Its overall structure is U-shaped, with two free ends integrally formed with V-shaped elastic contact parts 4. The two V-shaped elastic contact parts 4 are symmetrically distributed to ensure synchronous contact with the upper and lower contact surfaces of external plugs. A wiring part 5 is provided at the bend of the U-shaped conductive terminal 1, and a wiring hole can be provided at the end of the wiring part 5 for connection to external wires via welding or crimping.

[0025] 2. Structure and protection of the encapsulation shell 3 The encapsulation housing 3 is made of high and low temperature resistant PBT engineering plastic and is divided into two parts: the front insertion part 6 and the rear main body part 7. • The rear main body 7 has a rectangular frame structure, which tightly wraps around the outside of the retainer 2 with a wrapping gap of ≤0.1mm. The wiring part 5 passes through the wire hole reserved in the rear main body 7. The wire hole and the wiring part 5 are sealed with a silicone sealing ring to prevent dust from entering from the gap. • The front insertion part 6 has a insertion groove 8 at its end, and an inner receiving groove 9 adapted to the V-shaped elastic contact part 4 along its length direction. The width of the receiving groove 9 is the same as that of the V-shaped elastic contact part 4. The receiving groove 9 is connected to the insertion groove 8. The V-shaped elastic contact part 4 extends into the insertion groove 8. A rubber block 10 made of nitrile rubber is fixed to its inner side by epoxy resin adhesive. When the connector is not inserted, the rubber block 10 completely fits the connection between the insertion groove 8 and the receiving groove 9, forming the first physical seal to prevent dust and impurities from entering the receiving groove 9.

[0026] II. Optimized Structural Design Details 1. Dustproof and assembly adaptation optimization • The width of the rubber block 10 and the V-shaped elastic contact part 4 are both equal to the width of the receiving groove 9 with an error of ±0.02mm: This avoids the gap caused by the size being too small, and also prevents the assembly jamming or deformation damage caused by the size being too large, thus ensuring the tightness of the seal and the smoothness of the assembly. • The end of the V-shaped elastic contact part 4 is integrally formed with a barbed anti-detachment part 11 to prevent the contact part from falling off. • The outer side of the V-shaped elastic contact part 4 is provided with a first arc-shaped surface 12, and the inner side of the receiving groove 9 is provided with a corresponding second arc-shaped surface 13. When not inserted, the two are in close contact, forming a second physical seal, further preventing tiny particles from entering, providing double protection.

[0027] 1. Enhanced contact reliability • The U-shaped conductive terminal 1 and the V-shaped elastic contact part 4 are integrally formed by stamping process, without splicing gap, reducing signal transmission loss; the side wall of the V-shaped elastic contact part 4 is evenly distributed with strip grooves 14 along the length direction, which can increase the contact area with the rubber block 10. With the help of strong adhesive, even after 1000 insertion and removal tests, the rubber block detachment rate is still 0, ensuring a long-lasting sealing effect.

[0028] 1. Support and positioning of cage 2 Cage 2 is made of glass fiber reinforced PPO material and includes a front plate 15, a middle plate 16, and a rear plate 17. • The three components are evenly distributed along the length direction. The front plate 15, the middle plate 16 and the rear plate 17 are injection molded as one piece through the transverse connecting part 18 at the top and bottom to form a frame structure with excellent vibration resistance. • The U-shaped conductive terminal 1 is divided into an upper part 19 and a lower part 20, with their ends connected: the front ends of the upper part 19 and the lower part 20 are encapsulated in the upper and lower reserved holes of the front end plate 15, the middle part is encapsulated in the upper and lower slots of the middle plate 16, and the connection is encapsulated in the groove of the rear end plate 17. The three-point fixation ensures that the terminal does not shift and the transmission path is stable.

[0029] 1. Wiring and plug-in optimization • A notch 21 is provided at one end of the lower side 20 near the upper side 19. The wiring part 5 is formed by directly bending the material inside the notch 21 without additional splicing, which saves materials and ensures the connection strength between the wiring part and the terminal. The notch 21 is completely enclosed in the rear end plate 17 to prevent the wiring part from breaking due to external pulling. The top and bottom of the retainer 2 are provided with a first positioning protrusion 22 and a first positioning groove 23, and the encapsulation shell 3 is provided with a second positioning protrusion 24 and a second positioning groove 25 that cooperate with the first positioning protrusion 22 and the first positioning groove 23.

[0030] • The end of the insertion slot 8 is provided with a chamfer 26.

[0031] III. Signal Transmission Principle When the external adapter plug is inserted into the connector slot 8, the outer wall of the plug first fits tightly against the V-shaped elastic contact part 4, with a contact area ≥1mm². The signal or current is transmitted sequentially through the V-shaped elastic contact part 4 to the upper part 19 and the lower part 20 of the U-shaped conductive terminal 1, and then conducted to the wiring part 5 at the bend. Finally, the transmission is completed through the external line connected by the wiring part 5. Because the U-shaped conductive terminal 1 and the V-shaped elastic contact part 4 are integrated, and the cage 2 is fixed and the encapsulation shell 3 is shielded, the transmission requirements of the high-speed I / O interface are met.

[0032] IV. Beneficial Effects Compared with Related Technologies 1. Double dustproof sealing ensures long-term contact performance. When not inserted, the rubber block 10 seals the connection point, and the first arc-shaped surface 12 and the second arc-shaped surface 13 contact to block microparticles, thus extending the service life.

[0033] 2. High-speed, low-power transmission to meet high-end needs. Integrated terminals eliminate splicing resistance, and array-style layout enables multi-channel parallel transmission; the glass fiber material of cage 2 has electromagnetic shielding properties, and the encapsulation shell 3 is sealed and dustproof, which can meet the transmission requirements of high-speed interfaces.

[0034] 3. Stable structure and easy assembly, improving production efficiency. The cage 2 has a frame structure that is resistant to bending and vibration, and the terminals are fixed at three points without displacement; the first positioning protrusion 22 and the first positioning groove 23 have a clearance of 0.05-0.1mm, which enables the cage 2 and the package shell 3 to be quickly aligned; the notch 21 design saves materials, strengthens the wiring, and reduces production and use costs.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A high-speed transmission I / O connector, characterized in that, The package includes an array of U-shaped conductive terminals (1), a retainer (2), and a housing (3). The U-shaped conductive terminals (1) are encapsulated inside the retainer (2). Both ends of the U-shaped conductive terminals (1) are provided with V-shaped elastic contact portions (4), and the two V-shaped elastic contact portions (4) correspond to each other. The bending part of the U-shaped conductive terminals (1) is provided with a wiring portion (5). The housing (3) includes a front insertion portion (6) and a rear main body portion (7). The rear main body portion (7) is encapsulated outside the retainer (2), and the wiring portion (5) passes through the housing (3). The end of the front insertion portion (6) is embedded with a insertion groove (8). The front insertion portion (6) is provided with a receiving groove (9) for accommodating the V-shaped elastic contact portion (4), and the receiving groove (9) is connected to the insertion groove (8). The V-shaped elastic contact portion (4) extends into the insertion groove (8), and a rubber block (10) is bonded and fixed inside the V-shaped elastic contact portion (4).

2. The high-speed transmission I / O connector according to claim 1, characterized in that, The width of the rubber block (10) and the V-shaped elastic contact part (4) is equal to the width of the receiving groove (9).

3. A high-speed transmission I / O connector according to claim 1, characterized in that, The V-shaped elastic contact part (4) has an anti-detachment part (11) at its end, and a first arc-shaped surface (12) is provided on the V-shaped elastic contact part (4). The receiving groove (9) has a second arc-shaped surface (13) that contacts and cooperates with the first arc-shaped surface (12).

4. A high-speed transmission I / O connector according to claim 1, characterized in that, The U-shaped conductive terminal (1) and the V-shaped elastic contact (4) are integrated into one piece. The side wall of the V-shaped elastic contact (4) is provided with a strip groove (14) that contacts the rubber block (10).

5. A high-speed transmission I / O connector according to claim 1, characterized in that, The retainer (2) includes a front plate (15), a middle plate (16) and a rear plate (17). The top and bottom of the front plate (15), the middle plate (16) and the rear plate (17) are connected by a transverse connecting part (18), and the front plate (15), the middle plate (16), the rear plate (17) and the transverse connecting part (18) are an integral structure.

6. A high-speed transmission I / O connector according to claim 5, characterized in that, The U-shaped conductive terminal (1) includes an upper part (19) and a lower part (20), and the ends of the upper part (19) and the lower part (20) are connected. The front ends of the upper part (19) and the lower part (20) are encapsulated at the upper and lower ends of the front end plate (15). The middle part of the upper part (19) and the lower part (20) is encapsulated at the upper and lower ends of the middle plate (16). The connection between the upper part (19) and the lower part (20) is encapsulated in the rear end plate (17).

7. A high-speed transmission I / O connector according to claim 6, characterized in that, The lower side (20) has a notch (21) at one end near the upper side (19), and the wiring part (5) is formed by bending the material inside the notch (21) in the lower side (20).

8. A high-speed transmission I / O connector according to claim 1, characterized in that, The top and bottom of the retainer (2) are provided with a first positioning protrusion (22) and a first positioning groove (23), and the encapsulation shell (3) is provided with a second positioning protrusion (24) and a second positioning groove (25) that cooperate with the first positioning protrusion (22) and the first positioning groove (23).

9. A high-speed transmission I / O connector according to claim 7, characterized in that, The notch (21) is encapsulated within the back end plate (17).

10. A high-speed transmission I / O connector according to claim 7, characterized in that, The end of the insertion slot (8) is provided with a chamfer (26).

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