A high speed transmission I / O connector

Abstract

The application 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, a retainer and a packaging shell, the U-shaped conductive terminals are packaged inside the retainer, both ends of the U-shaped conductive terminals are provided with V-shaped elastic contact parts which are corresponding to each other, the bending part of the U-shaped conductive terminal is provided with a wiring part, the packaging shell comprises a front insertion part and a rear body part, the rear body part is packaged outside the retainer, the high-speed transmission I / O connector is characterized in that: on one hand, the rubber block inside the V-shaped elastic contact part is tightly attached to the connection part of the insertion slot and the accommodating slot to form the first sealing; on the other hand, the first arc surface of the V-shaped elastic contact part is tightly contacted with the second arc surface of the accommodating slot to form the second sealing, the double protection can effectively prevent dust and impurities from entering the accommodating slot, avoid the accumulation of foreign matters to cause poor contact of the V-shaped elastic contact part, and guarantee the stable contact performance in long-term use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of connectors, in particular to a high-speed transmission I / O connector. BACKGROUND

[0002] The existing high-speed transmission I / O connector lacks effective anti-foreign matter measures, dust and impurities can easily enter the inside of the connector and accumulate at the contact part, causing poor contact and affecting the stability and reliability of signal transmission, especially when used in harsh environments, the problem is more prominent.

[0003] The size deviation of the contact part of many existing products causes loose contact and exists a contact gap, increasing the risk of signal transmission interruption. In addition, the anti-falling and wear-resistant design of the contact part may be insufficient, which is easy to fall off due to excessive deformation, or to be seriously worn in the process of frequent plugging, affecting the service life of the connector. For example, the contact resistance of the tinned contact will significantly increase after multiple plugging in a vibrating environment.

[0004] In some traditional high-speed transmission I / O connectors, the conductive terminal and the elastic contact part adopt a split structure, which has a splicing gap and contact resistance, which can cause a large attenuation of the signal in the transmission process, affecting the transmission efficiency and quality. At the same time, the multi-channel parallel transmission capability may be insufficient, which cannot meet the transmission demand of high-speed I / O. In addition, the shielding effect of the connector may not be good, which is easy to be affected by external electromagnetic interference, affecting 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 technical problems. SUMMARY

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

[0007] The application provides a high-speed transmission I / O connector, which comprises arrayed U-shaped conductive terminals, a holder and a packaging shell, the U-shaped conductive terminals are packaged inside the holder, both ends of the U-shaped conductive terminals are provided with V-shaped elastic contact parts which are corresponding to each other, the bending part of the U-shaped conductive terminal is provided with a wiring part, the packaging shell comprises a front insertion part and a rear main body part, the rear main body part is packaged outside the holder, and the wiring part penetrates through the packaging shell, the end of the front insertion part is embedded with an insertion slot, the front insertion part is provided with an accommodation slot for accommodating the V-shaped elastic contact part, and the accommodation slot is connected with the insertion slot, the V-shaped elastic contact part extends into the insertion slot, and a rubber block is fixedly bonded inside the V-shaped elastic contact part.

[0008] Preferably, the width of the rubber block and the V-shaped elastic contact part is equal to the width of the accommodation slot.

[0009] Preferably, the end of the V-shaped elastic contact part is provided with an anti-falling part, the V-shaped elastic contact part is provided with a first arc surface, and the accommodation slot is provided with a second arc surface which is in contact with the first arc surface. In the uninserted state of the connector, the first arc surface is in contact with the second arc surface to form a physical block, effectively preventing dust, impurities and other foreign matters from entering the inside of the accommodation slot, and avoiding the accumulation of foreign matters to affect the subsequent contact performance of the V-shaped elastic contact part.

[0010] Preferably, the U-shaped conductive terminal and the V-shaped elastic contact part are in an integral structure, the side wall of the V-shaped elastic contact part is provided with a strip-shaped groove which is in contact with the rubber block, so that the rubber block and the V-shaped elastic contact part are more firmly bonded and are not easy to separate, and the sealing effect is better.

[0011] Preferably, the holder comprises a front end plate, an intermediate plate and a rear end plate, the top and bottom of the front end plate, the intermediate plate and the rear end plate are connected through a transverse connecting part, and the front end plate, the intermediate plate, the rear end plate and the transverse connecting part are in an integral structure.

[0012] Preferably, the U-shaped conductive terminal comprises an upper side part and a lower side part, and the ends of the upper side part and the lower side part are connected, the front end of the upper side part and the lower side part is packaged at the upper and lower ends of the front end plate, the middle part of the upper side part and the lower side part is packaged at the upper and lower ends of the intermediate plate, and the connecting part of the upper side part and the lower side part is packaged in the rear end plate.

[0013] After the external plug-in part is in close contact with the V-shaped elastic contact part, signals or currents are transmitted to the U-shaped conductive terminal through the V-shaped elastic contact part, and the two are in an integrated structure, thereby reducing contact resistance and signal loss, and then being conducted to the wiring part at the bending part through the upper side and the lower side of the U-shaped conductive terminal, and finally being connected to external lines through the wiring part, so that high-speed signal / current transmission is completed.

[0014] The holder encapsulates the front end, the middle part and the connecting part of the U-shaped conductive terminal through the front end plate, the middle plate and the rear end plate, and the front end of the upper side and the lower side is fixed to the front end plate, the middle part is fixed to the middle plate, and the connecting part is fixed to the rear end plate, so that the U-shaped conductive terminal is prevented from being displaced due to vibration; the first positioning protrusion and the first positioning groove of the holder are precisely matched with the second positioning protrusion and the second positioning groove of the encapsulation shell, so that rapid positioning and assembly are realized and misplacement is avoided; and the rear main body part of the encapsulation shell wraps the holder, so that the internal components are prevented from dust and impact; and the front plug-in part provides structural support for plug-in cooperation.

[0015] Preferably, the lower side part is provided with a notch at one end close to the upper side part, and the wiring part is formed by bending the material in the notch in the lower side part.

[0016] Preferably, the top and the bottom of the holder are each 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 matched with the first positioning protrusion and the first positioning groove.

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

[0018] Preferably, the end of the plug-in slot is provided with a chamfer, so that when the external plug-in part is inserted into the plug-in slot, the chamfer at the end of the plug-in slot guides the plug-in part to smoothly enter, thereby reducing plug-in resistance. During the plug-in process, the V-shaped elastic contact part is first pressed, so that the V-shaped elastic contact part is deformed, and the V-shaped elastic contact part and the rubber block are not separated due to strong adhesive bonding.

[0019] Compared with the related art, the application has the following beneficial effects:

[0020] I. Anti-foreign matter and sealing

[0021] Double physical plugging to prevent foreign matter: in the unplug-in state, on the one hand, the rubber block inside the V-shaped elastic contact part is tightly attached to the connecting part of the plug-in slot and the accommodating slot, forming the first plugging; on the other hand, the first arc surface of the V-shaped elastic contact part is in close contact with the second arc surface of the accommodating slot, forming the second plugging, so that the double protection can effectively block dust and impurities from entering the accommodating slot, avoid the accumulation of foreign matter to cause poor contact of the V-shaped elastic contact part, and ensure stable contact performance in long-term use.

[0022] The rubber block sealing effect is durable: the strip-shaped groove of the side wall of the V-shaped elastic contact part increases 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 part more firm and not easy to separate; even when the plug-in part is inserted and pressed, the two remain stable connection, avoiding the displacement or falling of the rubber block leading to sealing failure, further prolonging the effective period of dustproof sealing.

[0023] II. Improve contact reliability and component durability

[0024] Strong contact adhesion and adaptability: when the plug-in part is inserted, the V-shaped elastic contact part can deform under pressure, and its elastic structure can adapt to the slight size deviation of the plug-in part, ensuring close adhesion with the outer wall of the plug-in part; 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-in part on the contact part, but also helps to maintain the contact pressure, reduce the contact gap and reduce the risk of signal transmission interruption.

[0025] Anti-falling and wear-resistant design prolongs life: the anti-falling part at the end of the V-shaped elastic contact part can prevent it from falling out of the accommodating groove due to excessive deformation, preventing damage to the contact structure; the contact between the first arc surface and the second arc surface provides good support for the V-shaped elastic contact part.

[0026] III. Optimize high-speed transmission performance and reduce signal loss

[0027] Low-resistance transmission reduces signal attenuation: the U-shaped conductive terminal and the V-shaped elastic contact part adopt an integrated structure, eliminating the joint gap and contact resistance between the two, reducing resistance loss during signal transmission; at the same time, the arrayed U-shaped conductive terminals can realize multi-channel parallel transmission, greatly improving data transmission efficiency and meeting the transmission needs of high-speed I / O.

[0028] Stable transmission path without interference: the holder 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, preventing the U-shaped conductive terminal from shifting due to vibration and causing transmission path deviation; the rear main part of the packaging shell wraps the holder, which can isolate external electromagnetic interference and environmental impurities, and ensure the integrity of high-speed signal transmission.

[0029] IV. Enhance structural stability and improve assembly efficiency

[0030] Integrated structure strengthens overall rigidity: the front end plate, middle plate and rear end plate of the holder are in an integrated structure, with high overall strength, which can effectively resist external impact; the upper side and lower side of the U-shaped conductive terminal are respectively packaged in the corresponding positions of the holder, forming a stable internal support structure to prevent the terminal from deforming or shifting.

[0031] Accurate positioning assembly reduces error: the first positioning protrusion and the first positioning groove of the top and bottom of the retainer, and the second positioning protrusion and the second positioning groove in the packaging shell accurately match, which can realize the quick alignment and assembly of the retainer and the packaging shell, reduce the manual adjustment time, reduce the assembly error, and improve the production efficiency; meanwhile, the gap is packaged in the rear end plate, which further reinforces the connection structure of the wiring part and the U-shaped conductive terminal, and avoids the fracture of the wiring part. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic view of the front side of the overall structure of the application.

[0033] Figure 2 It is a schematic view of the rear side of the overall structure of the application.

[0034] Figure 3 It is a schematic view of the structure of the retainer and the U-shaped conductive terminal of the application.

[0035] Figure 4 It is a schematic view of the structure of the U-shaped conductive terminal of the application.

[0036] Figure 5 It is a schematic view of the structure of the accommodating groove of the application.

[0037] Figure 6 It is a schematic view of the internal structure of the packaging shell of the application.

[0038] Marked numbers in the figure: 1, U-shaped conductive terminal; 2, retainer; 3, packaging shell; 4, V-shaped elastic contact part; 5, wiring part; 6, front insertion part; 7, rear main body part; 8, insertion slot; 9, accommodating groove; 10, rubber block; 11, anti-falling part; 12, first arc surface; 13, second arc surface; 14, strip-shaped groove; 15, front end plate; 16, middle plate; 17, rear end plate; 18, transverse connecting part; 19, upper side part; 20, lower side part; 21, gap; 22, first positioning protrusion; 23, first positioning groove; 24, second positioning protrusion; 25, second positioning groove; 26, chamfer. DETAILED DESCRIPTION

[0039] The application will be further described below in combination with the drawings and embodiments.

[0040] Please refer to Figures 1 to 6 A high-speed transmission I / O connector, the core structure includes arrayed U-shaped conductive terminals 1, integrated retainers 2 and packaging shells 3, which form a stable transmission and protection system through accurate assembly:

[0041] I. Core structure and assembly relationship

[0042] 1. Structure and positioning of U-shaped conductive terminal 1

[0043] The U-shaped conductive terminal 1 is made of high-conductivity nickel-plated brass material, with a conductivity of ≥95% IACS and a plating thickness of 5-10 μm. It is uniformly arrayed along the length direction of the holder 2 and can be provided with 8-16 groups. It is integrally packaged with the inner side of the holder 2 through an injection molding process, ensuring that the terminal is not loose. The overall structure is in the shape of a "U", and the two free ends are integrally formed with V-shaped elastic contact portions 4. The upper and lower V-shaped elastic contact portions 4 are symmetrically distributed, ensuring synchronous contact with the upper and lower contact surfaces of the external plug-in component. The bending portion of the U-shaped conductive terminal 1 is provided with a wiring portion 5, and the end of the wiring portion 5 can be provided with a wiring hole, which can be connected with the external wire through welding or crimping.

[0044] 2. Structure and protection of the packaging shell 3

[0045] The packaging shell 3 is made of high and low temperature resistant PBT engineering plastic and is divided into a front plug-in portion 6 and a rear main body portion 7:

[0046] • The rear main body portion 7 is in the shape of a rectangular frame and tightly wraps around the outer side of the holder 2 with a wrapping gap of ≤0.1 mm. The wiring portion 5 passes through the threading hole reserved in the rear main body portion 7, and the threading hole and the wiring portion 5 are sealed with a silica gel sealing ring to prevent dust from entering from the gap.

[0047] • The front plug-in portion 6 is provided with a plug-in slot 8 at the end, and an accommodating groove 9 adapted to the V-shaped elastic contact portion 4 is provided inside along the length direction. The width of the accommodating groove 9 is consistent with that of the V-shaped elastic contact portion 4, and the accommodating groove 9 is in communication with the plug-in slot 8. The V-shaped elastic contact portion 4 extends into the plug-in slot 8, and a rubber block 10 made of nitrile rubber is fixed to the inner side of the V-shaped elastic contact portion 4 through epoxy resin adhesive. In the unconnected state of the connector, the rubber block 10 completely adheres to the connection between the plug-in slot 8 and the accommodating groove 9, forming the first physical blockage to prevent dust and impurities from entering the accommodating groove 9.

[0048] II. Preferred structural design details

[0049] 1. Dust prevention and assembly optimization

[0050] • The width of the rubber block 10 and the V-shaped elastic contact portion 4 is equal to the width of the accommodating groove 9 with an error of ±0.02 mm: it avoids both the size being too small to cause blocking gap and the size being too large to cause assembly jamming or deformation damage, ensuring the tightness of the blockage and the smoothness of the assembly;

[0051] • The end of the V-shaped elastic contact portion 4 is integrally formed with an inverted hook-shaped anti-dropping portion 11 to prevent the contact portion from falling off;

[0052] • The outer side of the V-shaped elastic contact portion 4 is provided with a first arc surface 12, and the inner side of the accommodating groove 9 is correspondingly provided with a second arc surface 13. In the unconnected state, the two arc surfaces are in close contact, forming the second physical blockage to further prevent small particles from entering, providing double protection.

[0053] 1. Contact reliability enhancement

[0054] • The U-shaped conductive terminal 1 and the V-shaped elastic contact part 4 are integrally made by a stamping forming process, without splicing gaps, reducing signal transmission loss; the side wall of the V-shaped elastic contact part 4 is uniformly distributed with strip grooves 14 along the length direction, which can increase the contact area with the rubber block 10, cooperate with strong adhesive, even after 1000 times of plugging test, the rubber block shedding rate is still 0, ensuring the durability of the sealing effect.

[0055] 1. Support and positioning of the retainer 2

[0056] The retainer 2 is made of glass fiber reinforced PPO material, including a front end plate 15, a middle plate 16 and a rear end plate 17:

[0057] • The three are uniformly distributed along the length direction, the front end plate 15, the middle plate 16 and the rear end plate 17, the top and the bottom are integrally formed by horizontal connecting parts 18, forming a frame structure, with excellent anti-vibration performance;

[0058] • The U-shaped conductive terminal 1 is divided into an upper side 19 and a lower side 20, both of which are connected at the end: the front end of the upper side 19 and the lower side 20 is packaged in the upper and lower reserved holes of the front end plate 15, the middle part is packaged in the upper and lower clamping grooves of the middle plate 16, and the connecting part is packaged in the groove of the rear end plate 17, three-point fixation ensures that the terminal does not shift and the transmission path is stable.

[0059] 1. Wiring and plug optimization

[0060] • The lower side 20 is provided with a notch 21 near one end of the upper side 19, and the wiring part 5 is directly bent from the material in the notch 21, without the need for additional splicing, which not only saves materials, but also ensures the connection strength of the wiring part and the terminal; the notch 21 is completely packaged in the rear end plate 17, avoiding external pulling leading to wiring part fracture;

[0061] The top and bottom of the retainer 2 are provided with a first positioning protrusion 22 and a first positioning groove 23, and the packaging shell 3 is provided with a second positioning protrusion 24 and a second positioning groove 25 matched with the first positioning protrusion 22 and the first positioning groove 23.

[0062] • The end of the plug-in slot 8 is provided with a chamfer 26.

[0063] Three, signal transmission principle

[0064] When the external adapter plug is inserted into the plug-in slot 8, the plug outer wall is first tightly fitted with the V-shaped elastic contact part 4, the contact area is greater than or equal to 1mm2, and the signal or current is transmitted to the upper side 19 and the lower side 20 of the U-shaped conductive terminal 1 through the V-shaped elastic contact part 4 in turn, and then conducted to the wiring part 5 at the bending part, and finally transmitted through the external line connected by the wiring part 5. Since the U-shaped conductive terminal 1 is designed in an integrated manner with the V-shaped elastic contact part 4, and the retainer 2 is fixed and the packaging shell 3 is shielded, the transmission requirements of the high-speed I / O interface are met.

[0065] Four, the beneficial effects compared with the related art

[0066] 1. Double dust sealing, long-term protection of contact performance

[0067] When not plugged in, the rubber block 10 seals the connection, the first arc surface 12 contacts and the second arc surface 13 blocks the micro particles, prolonging the service life.

[0068] 2. High-speed low-consumption transmission, meeting high-end requirements

[0069] The integrated terminal eliminates the splicing resistance, and the array layout realizes multi-channel parallel transmission; the glass fiber material of the retainer 2 has electromagnetic shielding performance, and the packaging shell 3 is sealed and dustproof, which can meet the transmission requirements of high-speed interfaces.

[0070] 3. Stable structure and easy assembly, improving production efficiency

[0071] The frame structure of the retainer 2 is resistant to bending and vibration, and the terminal is fixed by three points without displacement; the first positioning protrusion 22 cooperates with the first positioning groove 23 with a gap of 0.05-0.1mm, realizing the rapid alignment of the retainer 2 and the packaging shell 3; the notch 21 design saves materials, reinforces wiring, and reduces production and use cost.

[0072] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

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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