A multi-channel high-frequency signal transmission connector structure with high-density integration and miniaturization

Abstract

The application provides a multi-path high-frequency signal transmission connector structure with high-density integration and miniaturization, which comprises a shell, a connecting seat arranged on the shell, an insulating piece arranged between the shell and the connecting seat, and a plurality of connecting pins arranged along the length direction and the width direction of the connecting seat. The shell is made of insulating engineering plastic. The connecting pin comprises a pin body and a fixing ring sleeved on the pin body. By using the insulating engineering plastic shell, the difference in thermal expansion coefficient with the cable conductor can be reduced, and the poor contact, signal attenuation and connector failure caused by different expansion steps at high temperature can be avoided. The high-density arrangement of the connecting pins can greatly reduce the space occupation and meet the high-density integration requirement. The insulating piece can enhance the insulation performance, and the fixing ring can stabilize the pin body and ensure the stable high-frequency signal transmission. The application has the advantages of high comprehensive performance, low implementation cost, compact structure and easy popularization and implementation.

Description

Technical Field

[0001] This application belongs to the field of electrical connection technology, specifically relating to a multi-channel high-frequency signal transmission connector structure with high density integration and miniaturization. Background Technology

[0002] In existing technologies, multi-channel high-frequency signal transmission connectors are crucial in electronic communications and aerospace fields. They enable high-fidelity transmission of multi-channel high-frequency signals within limited spaces, ensuring equipment performance and serving as key components supporting miniaturization and high performance. However, the current conventional high-temperature connector's metal shell screw crimping structure presents several problems that urgently need to be addressed. While existing metal shells offer high temperature resistance and sufficient strength, allowing signal transmission via screw crimping, they occupy significant space—the shell thickness is substantial, requiring clearance for screw operation, making them unsuitable for high-density integration needs; replacement efficiency is low—maintenance requires individual screw unscrewing, a cumbersome and time-consuming process. More importantly, there is the issue of differing thermal expansion coefficients: the significant difference in thermal expansion coefficients between the metal shell and the cable conductor leads to asynchronous expansion and contraction at high temperatures. This not only causes loosening and poor contact at the crimp joint but also damages the integrity of the contact interface, resulting in signal attenuation and impedance abrupt changes; repeated thermal expansion and contraction can further cause fatigue fracture at the cable root, ultimately leading to connector failure.

[0003] Therefore, there is an urgent need to improve its structure in order to comprehensively enhance its high-density integration, miniaturization, maintenance efficiency and high-temperature stability, so as to meet the stringent requirements of high-end equipment for multi-channel high-frequency signal transmission. Utility Model Content

[0004] In order to solve the technical problems of conventional high-temperature multi-channel high-frequency signal transmission connectors with metal shell screw crimping structure, which occupy a lot of space, are difficult to adapt to high-density integration, have low replacement efficiency, and suffer from poor contact, signal attenuation or even failure due to the difference in thermal expansion coefficients between the shell and the cable, this application proposes a multi-channel high-frequency signal transmission connector structure with high-density integration and miniaturization.

[0005] This application adopts the following solution: a high-density integrated miniaturized multi-channel high-frequency signal transmission connector structure, including a housing, a connector seat disposed on the housing, an insulating member disposed between the housing and the connector seat, and a plurality of connecting pins arranged along the length and width directions of the connector seat. The housing is made of insulating engineering plastic, and the connecting pins include a pin body and a fixing ring sleeved on the pin body.

[0006] In some feasible embodiments, the connector includes a base, a plurality of mounting holes arranged along the length and width directions of the base, and a first support flange disposed around the outer wall of the base, wherein the pin body is inserted into the mounting holes.

[0007] In some feasible embodiments, the housing includes a main outer shell, connecting plates disposed on both sides of the main outer shell, a main connecting hole disposed on the main outer shell, and a second supporting flange disposed within the main connecting hole. The connecting seat is matched and disposed within the main connecting hole. When the connecting seat is matched and disposed within the main connecting hole, the first supporting flange is mounted on the second supporting flange.

[0008] In some feasible embodiments, the first support flange divides the seat into a front and a rear portion, and the insulating element is fitted onto the rear portion.

[0009] In some feasible embodiments, the shell is made of polyphenylene sulfide.

[0010] In some feasible embodiments, a connecting assembly is also provided on the connecting plate, the connecting assembly including a secondary connecting hole provided on the connecting plate, a connecting post detachably provided on the secondary connecting hole, and a fastener provided on the connecting post.

[0011] In some feasible embodiments, the connecting post includes a connecting boss, a first post disposed on the connecting boss, and a second post disposed on the first post. The fastener is detachably disposed on the second post. The connecting boss is mounted on the connecting plate, and the first post is matched and disposed in the secondary connecting hole.

[0012] In some feasible embodiments, the outer periphery of the connecting pin is provided with a fixing groove, and the fixing ring is matched and disposed in the fixing groove.

[0013] In some feasible embodiments, the retaining ring is made of elastic metal and has a clearance notch. The connecting pin can be matched and disposed in the clearance notch so that the retaining ring can be matched and extended into the retaining groove.

[0014] Compared with the prior art, this application has the following beneficial effects:

[0015] This application provides a high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure, comprising a housing, a connector base disposed on the housing, an insulating component disposed between the housing and the connector base, and a plurality of connecting pins arranged along the length and width directions of the connector base. The housing is made of insulating engineering plastic, and the connecting pins include a pin body and a retaining ring sleeved on the pin body. By using an insulating engineering plastic housing, this application can reduce the difference in thermal expansion coefficients with the cable conductor, avoiding poor contact, signal attenuation, and connector failure caused by asynchronous expansion and contraction at high temperatures. The high-density arrangement of the connecting pins significantly reduces space occupation, adapting to high-density integration requirements. The insulating component enhances insulation performance, and the retaining ring stabilizes the pin body, ensuring stable high-frequency signal transmission. It has the advantages of high overall performance, low implementation cost, compact structure, and ease of promotion and implementation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a multi-channel high-frequency signal transmission connector structure with high density integration and miniaturization.

[0017] Figure 2 This is a top view of a multi-channel high-frequency signal transmission connector structure with high-density integration and miniaturization according to this application;

[0018] Figure 3 This application Figure 2 Sectional view at point AA;

[0019] Figure 4 This application Figure 3 A magnified view of a section at point C;

[0020] Figure 5 This application Figure 2 Sectional view at point BB;

[0021] Figure 6 This application Figure 5 A magnified view of a section at point D;

[0022] Figure 7 This is an exploded structural diagram of a multi-channel high-frequency signal transmission connector structure with high density integration and miniaturization according to this application;

[0023] Figure 8 This is a schematic diagram of the connector of this application;

[0024] Figure 9 This is a schematic diagram of the structure of the fixing ring in this application;

[0025] Figure 10 This is a structural schematic diagram of the connecting column in this application. Detailed Implementation

[0026] Combination Figures 1 to 10 The following content further illustrates the technical solution proposed in this application. This application adopts the following technical solution: a high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure, comprising a housing 1, a connector 2 disposed on the housing 1, an insulating member 3 disposed between the housing 1 and the connector 2, and a plurality of connecting pins 4 arranged along the length and width directions of the connector 2. The housing 1 is made of insulating engineering plastic, and the connecting pins 4 include a pin body 40 and a retaining ring 41 sleeved on the pin body 40.

[0027] This application provides a high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure, comprising a housing, a connector base disposed on the housing, an insulating component disposed between the housing and the connector base, and a plurality of connecting pins arranged along the length and width directions of the connector base. The housing is made of insulating engineering plastic, and the connecting pins include a pin body and a retaining ring sleeved on the pin body. By using an insulating engineering plastic housing, this application can reduce the difference in thermal expansion coefficients with the cable conductor, avoiding poor contact, signal attenuation, and connector failure caused by asynchronous expansion and contraction at high temperatures. The high-density arrangement of the connecting pins significantly reduces space occupation, adapting to high-density integration requirements. The insulating component enhances insulation performance, and the retaining ring stabilizes the pin body, ensuring stable high-frequency signal transmission. It has the advantages of high overall performance, low implementation cost, compact structure, and ease of promotion and implementation.

[0028] In actual implementation, the thermal expansion coefficient of traditional metal housings (such as aluminum, about 23ppm / ℃) differs greatly from that of copper cables (about 16.5ppm / ℃). In high-temperature environments (such as inside equipment or outdoors), the housing and cable expand and contract asynchronously, which can easily lead to loosening of the pins and the mating ends, resulting in poor contact. On the other hand, the thermal expansion coefficient of insulating engineering plastics is usually 15-20ppm / ℃, which reduces the difference from that of copper cables. Even under common operating conditions of -40℃ to 125℃, it can maintain the relative position stability of the housing, connector, and pins, avoiding signal attenuation or connector failure.

[0029] In actual implementation, the thermal expansion coefficient of the insulating engineering plastic matches that of the cable, which can prevent the pins from loosening due to temperature changes. It is especially suitable for high-temperature conditions such as automotive electronics and industrial control. Compared with traditional metal housings that require the addition of heat compensation components such as springs and gaskets, this solution directly solves the problem through material selection, simplifying the structure and reducing the number of failure points.

[0030] Furthermore, the insulating component 3 is located between the housing 1 and the connecting seat 2. The material can be a high-temperature resistant insulating material. On the one hand, it can isolate the housing and the connecting seat to prevent conductive interference between different components; on the other hand, it fills the gap between the two, enhances the overall structural rigidity, and avoids component displacement caused by vibration.

[0031] The connecting pins 4 are arranged along the length and width of the connector 2 (i.e., a two-dimensional matrix arrangement). Compared with the traditional one-dimensional arrangement that only extends along the length, more pins can be accommodated in the same space, enabling parallel transmission of multiple signals. Furthermore, the spacing between the pins in the matrix arrangement can be precisely controlled by insulating components and fixing rings to meet the impedance matching requirements of high-frequency signals.

[0032] In this embodiment, the connecting seat 2 includes a seat body 20, a plurality of mounting holes 21 arranged along the length and width directions of the seat body 20, and a first support protrusion 22 provided around the outer wall of the seat body 20, and the pin body 40 is inserted into the mounting holes 21.

[0033] In this embodiment, the housing 1 includes a main outer shell 10, connecting plates 11 disposed on both sides of the main outer shell 10, a main connecting hole 12 disposed on the main outer shell 10, and a second supporting flange 13 disposed within the main connecting hole 12. The connecting seat 2 is matched and disposed within the main connecting hole 12. When the connecting seat 2 is matched and disposed within the main connecting hole 12, the first supporting flange 22 is mounted on the second supporting flange 13.

[0034] In actual implementation, when the connector is inserted into the main connecting hole, the hole wall acts as a radial guide to prevent displacement during insertion. After the connector is fully inserted into the main connecting hole, the first support protrusion on the outer wall of the connector will be placed on the second support protrusion on the inner wall of the main connecting hole. Axial positioning (limiting the connector from further insertion) and circumferential anti-rotation are achieved through the end face contact of the protrusion (the protrusion is designed to be elliptical to prevent the connector from rotating inside the hole).

[0035] Furthermore, the connecting plates on both sides of the housing may be equipped with connecting components. By connecting the connecting components to the equipment housing, the entire connector is fixed to the equipment, preventing the overall displacement of the connector caused by equipment vibration, and indirectly ensuring stable contact between the pins and the mating end.

[0036] In actual implementation, the insertion and extraction forces can be effectively distributed by setting a first support flange and a second support flange respectively. When the connector is inserted or removed, the first and second support flanges transmit the insertion and extraction forces to the entire housing through end face contact, rather than concentrating them on a local area of ​​the main connecting hole wall. This reduces local overload on the hole wall, thereby effectively reducing the wear of the main connecting hole wall and extending the service life of the connector.

[0037] In this embodiment, the first support protrusion 22 divides the seat 20 into a front part 23 and a rear part 24, and the insulating member 3 is fitted onto the rear part 24.

[0038] In actual implementation, the front part is exposed outside the main connection hole of the housing (or the mating end), the front opening of the mounting hole 21 is located at the front, the mating end of the pin body 40 extends from the front and directly contacts the external connector, and the rear part is located inside the main connection hole of the housing and directly cooperates with the housing and the insulating part 3.

[0039] In this embodiment, the shell 1 is made of polyphenylene sulfide (PPS).

[0040] In practical applications, PPS can withstand long-term operating temperatures of 220℃-260℃, and short-term temperatures even exceeding 300℃, perfectly adapting to high-temperature conditions. At high temperatures, PPS has a low coefficient of thermal expansion (approximately 11ppm / ℃-13ppm / ℃, close to aluminum's 23ppm / ℃), with minimal difference in thermal expansion compared to connectors and insulation components. This reduces changes in the gap width between components at high temperatures, preventing moisture and dust intrusion, and also preventing poor contact caused by pin misalignment due to component expansion and contraction. Furthermore, PPS has a volume resistivity ≥10⁻⁶. 16 With a dielectric constant of only 3.0-3.2 (at 1MHz) and extremely low dielectric loss at high frequencies (tanδ≤0.002), PPS is an ideal insulating material for high-frequency signal transmission. Using PPS as the housing material can isolate external electromagnetic interference (such as signal interference from other conductive components inside the equipment) and prevent interference signals from being conducted to the internal pins through the housing.

[0041] In this embodiment, a connecting component 5 is also provided on the connecting plate 11. The connecting component 5 includes a secondary connecting hole 50 provided on the connecting plate 11, a connecting post 51 detachably provided on the secondary connecting hole 50, and a fastener 52 provided on the connecting post 51.

[0042] In this embodiment, the connecting post 51 includes a connecting boss 510, a first post 511 disposed on the connecting boss 510, and a second post 512 disposed on the first post 511. The fastener 52 is detachably disposed on the second post 512. The connecting boss 510 is mounted on the connecting plate 11, and the first post 511 is matched and disposed in the secondary connecting hole 50.

[0043] In this embodiment, a fixing groove 42 is provided on the outer periphery of the connecting pin 4, and the fixing ring 41 is matched and disposed in the fixing groove 42.

[0044] In this embodiment, the fixing ring 41 is made of elastic metal and has a clearance notch 43. The connecting pin 4 can be matched and disposed in the clearance notch 43 so that the fixing ring 41 can be matched and extended into the fixing groove 42.

[0045] This application provides a high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure, comprising a housing, a connector base disposed on the housing, an insulating component disposed between the housing and the connector base, and a plurality of connecting pins arranged along the length and width directions of the connector base. The housing is made of insulating engineering plastic, and the connecting pins include a pin body and a retaining ring sleeved on the pin body. By using an insulating engineering plastic housing, this application can reduce the difference in thermal expansion coefficients with the cable conductor, avoiding poor contact, signal attenuation, and connector failure caused by asynchronous expansion and contraction at high temperatures. The high-density arrangement of the connecting pins significantly reduces space occupation, adapting to high-density integration requirements. The insulating component enhances insulation performance, and the retaining ring stabilizes the pin body, ensuring stable high-frequency signal transmission. It has the advantages of high overall performance, low implementation cost, compact structure, and ease of promotion and implementation.

[0046] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure, characterized in that, It includes a housing (1), a connecting seat (2) disposed on the housing (1), an insulating member (3) disposed between the housing (1) and the connecting seat (2), and a plurality of connecting pins (4) arranged along the length and width directions of the connecting seat (2). The housing (1) is made of insulating engineering plastic. The connecting pins (4) include a pin body (40) and a fixing ring (41) sleeved on the pin body (40).

2. The high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure according to claim 1, characterized in that, The connector (2) includes a seat body (20), a plurality of mounting holes (21) arranged along the length and width directions of the seat body (20), and a first support flange (22) provided around the outer wall of the seat body (20), and the pin body (40) is inserted into the mounting holes (21).

3. The multi-channel high-frequency signal transmission connector structure with high-density integration and miniaturization according to claim 2, characterized in that, The housing (1) includes a main outer shell (10), connecting plates (11) on both sides of the main outer shell (10), a main connecting hole (12) on the main outer shell (10), and a second supporting flange (13) in the main connecting hole (12). The connecting seat (2) is matched and disposed in the main connecting hole (12). When the connecting seat (2) is matched and disposed in the main connecting hole (12), the first supporting flange (22) is mounted on the second supporting flange (13).

4. The high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure according to claim 2, characterized in that, The first support flange (22) divides the seat (20) into a front part (23) and a rear part (24), and the insulating member (3) is fitted onto the rear part (24).

5. The high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure according to claim 2, characterized in that, The shell (1) is made of polyphenylene sulfide.

6. The high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure according to claim 3, characterized in that, It also includes a connecting assembly (5) disposed on the connecting plate (11), the connecting assembly (5) including a secondary connecting hole (50) disposed on the connecting plate (11), a connecting post (51) detachably disposed on the secondary connecting hole (50), and a fastener (52) disposed on the connecting post (51).

7. The multi-channel high-frequency signal transmission connector structure with high-density integration and miniaturization according to claim 6, characterized in that, The connecting post (51) includes a connecting boss (510), a first post (511) disposed on the connecting boss (510), and a second post (512) disposed on the first post (511). The fastener (52) is detachably disposed on the second post (512). The connecting boss (510) is mounted on the connecting plate (11). The first post (511) is matched and disposed in the secondary connecting hole (50).

8. The high-density, integrated, and miniaturized multi-channel high-frequency signal transmission connector structure according to claim 1, characterized in that, The connecting pin (4) has a fixing groove (42) on its outer periphery, and the fixing ring (41) is matched and disposed in the fixing groove (42).

9. The multi-channel high-frequency signal transmission connector structure with high-density integration and miniaturization according to claim 8, characterized in that, The fixing ring (41) is made of elastic metal and has a clearance notch (43). The connecting pin (4) can be matched and placed in the clearance notch (43) so that the fixing ring (41) can be matched and inserted into the fixing groove (42).

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