A multi-core connector

Abstract

The application discloses a multi-core connector, comprising a female rubber core, a male rubber core, a first grounding sheet and a second grounding sheet, the female rubber core and the male rubber core are connected, and the same number of core holes are arranged on the female rubber core and the male rubber core respectively, the first grounding sheet is locked on the side surface of the female rubber core through a fastener, the second grounding sheet is locked on the side surface of the male rubber core through a fastener, and the first grounding sheet and the second grounding sheet are in contact, and the first grounding sheet or the second grounding sheet is grounded through a terminal grounding wire. The application reduces the contact resistance through the close contact of the double grounding sheets, enhances the electromagnetic interference shielding capability, guarantees the high-frequency signal transmission without crosstalk and attenuation, and improves the EMC performance.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and more particularly to a multi-core connector. Background Technology

[0002] In the practical application of multi-core connectors, with the increasing integration of electronic devices and the improvement of signal transmission rate, the requirements for electromagnetic compatibility (EMC) performance of connectors are becoming more and more stringent. It is necessary not only to ensure effective conduction between the corresponding terminals of multiple sets of core holes, but also to suppress the influence of external electromagnetic interference on internal signals through reasonable grounding design, while avoiding internal signals radiating outwards and interfering with other devices.

[0003] Currently, the design focus of multi-core connectors on the market is mainly on the size matching and mating guidance of the male and female cores. The design of the grounding structure is generally simplified or unreasonable, which makes it difficult to meet the requirements of high-demand scenarios in terms of grounding reliability and anti-interference capability. Utility Model Content

[0004] The purpose of this application is to provide a multi-core connector that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: On one hand, a multi-core connector is provided, comprising: a female core, a male core, a first grounding plate, and a second grounding plate. The female core and the male core are connected, and the female core and the male core are respectively provided with the same number of core holes. The first grounding plate is locked to the side of the female core by a fastener, and the second grounding plate is locked to the side of the male core by a fastener. The first grounding plate and the second grounding plate are in contact, and the first grounding plate or the second grounding plate is grounded through a terminal block.

[0006] Furthermore, the male rubber core has a protruding boss on its side, and the inner side of the boss is hollowed out. The contact end of the first grounding piece and the contact end of the second grounding piece are both located on the inner side of the boss and are in contact.

[0007] Furthermore, both the first grounding piece and the second grounding piece include a main body and an extension connected to one end of the main body. The main body is locked to the female core or the male core by fasteners, and the extension extends to the inside of the boss.

[0008] Furthermore, in the two extensions corresponding to the first grounding piece and the second grounding piece in contact, one of the extensions extends toward the side away from the boss to form a fastening part, and the other extension extends toward the side of the boss to form an abutting part. The fastening part can fasten to the female core or the male core, and the abutting part abuts against the inner wall of the boss so that the two extensions are always in contact.

[0009] Furthermore, it also includes a housing, and both the female core and the male core are disposed within the housing.

[0010] Furthermore, the first grounding plate and the second grounding plate also include fixing parts that are vertically connected to both sides of the extension. The two fixing parts lock the female core or the male core to the outer casing by fasteners and can lock the outer casing to the panel.

[0011] Furthermore, there are two of each of the first grounding piece and the second grounding piece, with the two first grounding pieces symmetrically arranged on the two sides of the female rubber core and the two second grounding pieces symmetrically arranged on the two sides of the male rubber core.

[0012] Furthermore, both the first grounding plate and the second grounding plate are elastic metal sheets.

[0013] Furthermore, the male core has a guide protrusion on its inner side, and the female core has a guide groove on its outer side that cooperates with the guide protrusion for guidance.

[0014] Furthermore, the core hole is provided with 16-80 holes.

[0015] The beneficial effects of this application are as follows: On the one hand, the close contact of the double grounding plates reduces the contact resistance, enhances the electromagnetic interference shielding capability, ensures no crosstalk or attenuation during high-frequency signal transmission, and improves EMC performance; on the other hand, the fastener locking method is more stable than the snap-fit ​​method, and can still maintain the stability of the grounding path under vibration environment, making it suitable for automotive, construction machinery and other scenarios. In addition, the grounding wire of the terminal block replaces welding, which simplifies the assembly process and allows for subsequent maintenance and replacement without damaging the structure, thus improving the ease of operation. Moreover, it takes into account the grounding reliability, anti-interference effect and maintenance convenience, meeting the needs of high-requirement scenarios. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the multi-core connector described in an embodiment of this application; Figure 2 This is an exploded view of the multi-core connector described in the embodiments of this application; Figure 3 This is a schematic diagram of one of the grounding plates described in an embodiment of this application; Figure 4 This is a schematic diagram of another grounding plate described in an embodiment of this application; Figure 5 This is a schematic diagram of the male adhesive core described in the embodiments of this application; Figure 6 This is a schematic diagram of the masterbatch core described in the embodiments of this application.

[0018] In the figure: 1. Female rubber core; 101. Guide groove; 2. Male rubber core; 201. Boss; 202. Guide protrusion; 3. First grounding piece; 4. Second grounding piece; 5. Core hole; 6. First screw; 7. Second screw; 8. Main body; 9. Extension; 10. Buckle; 11. Abutment; 12. Fixing part. Detailed Implementation

[0019] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] like Figures 1-6As shown, this embodiment provides a multi-core connector, including: a female core 1, a male core 2, a first grounding plate 3, and a second grounding plate 4. The female core 1 and the male core 2 are connected, and the female core 1 and the male core 2 are respectively provided with the same number of core holes 5. The first grounding plate 3 is locked to the side of the female core 1 by fasteners, and the second grounding plate 4 is locked to the side of the male core 2 by fasteners. The first grounding plate 3 and the second grounding plate 4 are in contact, and the first grounding plate 3 or the second grounding plate 4 is grounded through a terminal block.

[0023] Based on the above scheme, the first grounding piece 3 and the second grounding piece 4 are locked to the sides of the female rubber core 1 and the male rubber core 2 respectively by fasteners, so as to avoid the problem of easy displacement and loosening of single-point fixing and ensure the assembly stability of the grounding pieces; at the same time, when the male rubber core 2 and the female rubber core 1 are connected, the two grounding pieces are in direct contact, and together with the grounding wire of the terminal block, a reliable grounding path is formed.

[0024] Specifically, in terms of grounding stability, fasteners are used to independently lock the first grounding piece 3 and the second grounding piece 4 to the sides of the female core 1 and the male core 2, respectively. Compared with the existing single-point snap-fit ​​or single grounding piece design, the fastener locking method can form a stable assembly structure, avoid the grounding piece from shifting due to force during the insertion process, and resist the risk of loosening caused by vibration during equipment operation, ensuring that the grounding piece always maintains the preset assembly posture, providing a basic guarantee for the stability of the grounding path.

[0025] Regarding the improvement of electromagnetic compatibility performance, when the male core 2 and the female core 1 are connected, the first grounding plate 3 and the second grounding plate 4, which are independently fixed on both sides, are in direct contact, forming a continuous grounding conduction path. This structure of direct contact between the two grounding plates can significantly reduce the contact resistance of the grounding loop and reduce the transmission impedance of electromagnetic interference signals. It effectively blocks the intrusion of external electromagnetic interference into the internal signals of the connector and avoids the internal signals from radiating outward and causing interference. This significantly improves the signal transmission quality of the connector in complex electromagnetic environments and meets the electromagnetic compatibility performance requirements of high-demand scenarios.

[0026] In terms of ease of assembly and maintenance, the connection between the first grounding piece 3 or the second grounding piece 4 and the grounding wire is achieved through terminal blocks, replacing the existing welding method. Terminal block connections do not require specialized welding equipment and operations, simplifying the production and assembly process; when repairing equipment or replacing connectors, the grounding wire can be disassembled and reconnected simply by plugging and unplugging the terminals, without damaging the original grounding structure, reducing maintenance difficulty and operating costs, and improving overall ease of use.

[0027] Preferably, the male core 2 has a protruding boss 201 on its side, and the inner side of the boss 201 is hollowed out. The contact ends of the first grounding piece 3 and the second grounding piece 4 are both located on the inner side of the boss 201 and are in contact. The hollowed-out area on the inner side of the boss 201 forms a dedicated receiving space for the contact ends. The circumferential sidewall of the boss 201 can physically limit the contact ends of the two grounding pieces. At the same time, during the insertion of the male core 2 and the female core 1, the structure of the boss 201 can guide the contact ends of the grounding pieces to accurately align along a preset trajectory, avoiding the contact ends from swaying due to misalignment during insertion.

[0028] In this design, the limiting function of the boss 201 ensures that the two grounding plates always maintain surface contact, effectively avoiding the problem of incomplete connection that is prone to occur with single-point or line contact, ensuring the stability of the grounding loop contact area, further reducing contact resistance, and enhancing the continuity and reliability of electromagnetic interference shielding. In addition, the boss 201's enclosed protection of the contact end reduces the erosion of the contact interface by external dust, moisture, and foreign objects during assembly, while weakening the amplitude of force shaking of the contact end under vibration environment and maintaining stable contact pressure. At the same time, the structure of the boss 201 makes the grounding plate contact end form an internal layout, avoiding the risk of mechanical damage caused by direct exposure of the contact end, extending the service life of the grounding plate, improving the overall structure of the connector's resistance to environmental interference, and providing more comprehensive protection for long-term stable operation in high-demand scenarios.

[0029] In some embodiments, both the first grounding piece 3 and the second grounding piece 4 include a main body 8 and an extension 9 connected to one end of the main body 8. The main body 8 is locked to the female rubber core 1 or the male rubber core 2 by fasteners, and the extension 9 extends to the inner side of the boss 201. The main body 8 serves as the fixing carrier for the grounding piece, and the fasteners form a rigid lock with the female rubber core 1 or the male rubber core 2, ensuring the stability of the overall assembly position of the grounding piece. Simultaneously, the extension 9 serves as a dedicated contact component, extending along a preset trajectory to the inner side of the boss 201, thus structurally separating the contact function from the fixing function. The main body 8 focuses on stable fixing, achieving multi-point or high-strength locking through fasteners to prevent overall displacement of the grounding piece. The extension 9 focuses on contact conduction, does not bear fixing stress, and can always maintain the structural integrity and posture stability of the contact end, effectively solving the problem of poor contact caused by mutual interference between the fixing and contact functions. Moreover, the structure is enhanced in terms of spatial adaptability. The length and shape of the extension 9 can be flexibly designed according to the spatial dimensions inside the boss 201, ensuring that it can accurately extend into the inside of the boss 201 and form effective contact with the extension 9 of the opposite grounding piece. In conjunction with the limiting effect of the boss 201, the positional deviation range of the contact end is further reduced, and the alignment accuracy of the contact during the insertion process is improved.

[0030] Furthermore, in the two extensions 9 corresponding to the first grounding piece 3 and the second grounding piece 4 that are in contact, one extension 9 extends toward the side away from the boss 201 and forms a fastening part 10, while the other extension 9 extends toward the side of the boss 201 and forms an abutment part 11. The fastening part 10 can fasten to the female core 1 or the male core 2, and the abutment part 11 abuts against the inner wall of the boss 201 so that the two extensions 9 are always in contact. Using the fastening part 10 as the position anchor point of the extension 9, a fixed constraint is formed by fastening with the female core 1 or the male core 2, restricting the radial or axial displacement of the extension 9 along the boss 201; at the same time, the abutment part 11 forms an elastic or rigid abutment against the inner wall of the boss 201, generating a continuous force pointing toward the opposing extension 9, forcing the two extensions 9 to always remain in close contact.

[0031] Regarding the above solution, its core benefits are: First, constant contact pressure. The contact relationship between the abutment part 11 and the inner wall of the boss 201 can continuously provide stable contact pressure, avoiding the increase in contact end gap or pressure attenuation caused by vibration and temperature changes. This effectively solves the problem of incomplete connection that easily occurs in traditional contact structures that rely solely on the insertion pre-tightening force to maintain contact, ensuring that the grounding circuit is always in a low contact resistance state, and the electromagnetic interference shielding effect is stable and long-lasting. Second, enhanced anti-interference capability. The fastening and fixing of the buckle part 10 and the pressing and limiting of the abutment part 11 form a three-dimensional constraint, which can resist the impact of high-frequency vibration on the extension part 9 during equipment operation and prevent relative slippage of the contact end; it can also offset the lateral force generated during the insertion process, preventing the extension part 9 from dislodging from the contact position due to force displacement, and ensuring the consistency of the contact state after insertion. Third, improved assembly tolerance: the elastic deformation of the abutment part 11 can compensate for minor dimensional deviations generated during the processing and assembly of the core, boss 201, and grounding plate. Even with slight positional errors, the abutment part 11 can still ensure effective contact between the two extensions 9 through its own deformation or pressure adjustment, reducing excessive requirements on component processing precision and improving production yield. Fourth, a self-locking structure: the engagement of the latch 10 with the core provides a fixed support point for the extensions 9, while the abutment part 11 converts the reaction force of the inner wall of the boss 201 into contact pressure. The two form a closed-loop action chain of fixing, pressing, and contact, achieving autonomous maintenance of the contact state without additional auxiliary components. This simplifies the overall structural design while improving the reliability and independence of the grounding plate contact system. Fifth, contact interface protection: continuous contact pressure ensures that the contact interfaces of the two extensions 9 are always tightly fitted, reducing oxidation or corrosion caused by air, moisture, and dust intrusion into the contact gap, extending the service life of the contact end, and providing key guarantees for the long-term stable grounding performance and electromagnetic compatibility performance of the connector.

[0032] Furthermore, it also includes a housing, within which both the female rubber core 1 and the male rubber core 2 are housed. The first grounding plate 3 and the second grounding plate 4 further include fixing parts 12 vertically connected to both sides of the extension 9. The two fixing parts 12 are fastened to the female rubber core 1 or the male rubber core 2 by fasteners, and can also lock the housing onto the panel. Using the fixing parts 12 as multifunctional connecting components for the grounding plate, after being vertically connected to both sides of the extension 9, the fixing parts 12-female rubber core 1 / male rubber core 2-housing are rigidly locked in sequence by fasteners. At the same time, the housing is locked onto the outer panel by the same fastener, making the grounding plate the core link connecting the rubber core, the housing and the panel. Moreover, the fixing parts 12, as part of the grounding plate, simultaneously realize the conduction between the housing and the grounding circuit. A single fastener can lock 12 pairs of rubber cores, outer shell and panel in multiple ways, eliminating the need to repeatedly align different components during installation and improving assembly efficiency. In subsequent maintenance, the rubber cores, outer shell and panel can be separated at the same time by removing the fastener, which is convenient for the inspection or replacement of internal parts. In addition, the grounding circuit is linked with the mechanical fixing structure, eliminating the need to disconnect or connect the grounding wire separately, simplifying the maintenance operation process.

[0033] It is worth noting that, among the fasteners mentioned above, the fastener located on the main body 8 is the first screw 6, while the fastener located on the fixing part 12 is the second screw 7. Alternatively, the two fasteners can be designed to be of the same specification according to actual needs; no specific limitation is made here.

[0034] Generally, two of each of the first grounding plate 3 and the second grounding plate 4 are provided. The two first grounding plates 3 are symmetrically arranged on two sides of the female core 1, and the two second grounding plates 4 are symmetrically arranged on two sides of the male core 2. When the female core 1 and the male core 2 are inserted, the first grounding plates 3 and the second grounding plates 4 on both sides simultaneously form contact, constructing two independent and parallel grounding paths. At the same time, the fixing parts 12 on both sides simultaneously lock the core, the outer shell, and the panel through fasteners, so that the force on both sides of the connector and the grounding function are symmetrically balanced. The redundancy of the grounding path improves reliability, and the parallel grounding loops on both sides form double protection. Even if one side of the grounding plate fails due to wear, poor contact, or other problems, the other side can still maintain the grounding function, avoiding electromagnetic shielding failure or signal transmission interruption caused by a single-point grounding fault, and significantly improving the fault tolerance and safety of the connector in critical scenarios. Moreover, the electromagnetic shielding is balanced, with symmetrically distributed grounding plates on both sides, forming a surrounding grounding shielding network with the outer shell. This can eliminate weak shielding areas caused by single-sided grounding. For example, if there is an electromagnetic leakage gap on one side of the connector due to the lack of a grounding plate, external interference signals can be evenly guided to the ground from both sides of the connector, and internal signals are also difficult to radiate outward from the gap between the two sides of the shielding, which greatly improves the stability and comprehensiveness of the overall electromagnetic compatibility performance.

[0035] Specifically, both the first grounding piece 3 and the second grounding piece 4 are elastic metal sheets. Utilizing the property that elastic metal sheets can undergo elastic deformation under external force and return to their original shape, during the engagement of the grounding piece with the rubber core, the boss 201, and the opposing grounding piece, a continuous pre-tightening force is generated through deformation, ensuring that the contact interface always remains in a tight fit, while simultaneously buffering the impact of external stress on the contact structure.

[0036] In some embodiments, the male core 2 has a guide protrusion 202 on its inner side, and the female core 1 has a guide groove 101 on its outer side that cooperates with the guide protrusion 202 for guidance. The guide protrusion 202 on the inner side of the male core 2 and the matching guide groove 101 on the outer side of the female core 1 are designed to achieve precise docking guidance of the male and female cores 1 through a dedicated guide structure. The guide protrusion 202 and the guide groove 101 form a physical limiting guide pair during insertion. When the male and female cores 1 are docked, the guide protrusion 202 first embeds into the guide groove 101, constrains the insertion direction along the extension trajectory of the groove, and forces the male and female cores 1 to complete axial alignment and insertion in a preset posture. The rigid fit between the protrusion and the groove can precisely limit the relative radial displacement of the male and female cores 1, avoiding misalignment and displacement of the terminals in the core hole 5 due to manual alignment deviation during mating. This effectively solves the problems of misaligned terminals and incomplete mating that are prone to occur in multi-core connectors due to the large number and small spacing of the core holes 5, ensuring that the corresponding terminals of each set of core holes 5 can make accurate contact and conduction, and ensuring the stability of signal or power transmission.

[0037] In practical applications, the number of core holes 5 is set to 16-80, specifically 64. By adapting to the transmission requirements of medium and high core counts and coordinating with the overall structure optimization, the application scenarios and transmission reliability of the connector are further improved. Based on the layout of core holes 5 within this range, multiple independent signal / power transmission channels are formed on the female core 1 and male core 2. This not only meets the core requirements of multi-channel parallel transmission in scenarios such as industrial automation and communication equipment, but also avoids the risk of signal crosstalk caused by multi-core layout through reasonable core hole 5 spacing design.

[0038] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A multi-core connector, characterized in that, include: The system comprises a female rubber core (1), a male rubber core (2), a first grounding piece (3), and a second grounding piece (4). The female rubber core (1) and the male rubber core (2) are connected, and the female rubber core (1) and the male rubber core (2) are provided with the same number of core holes (5). The first grounding piece (3) is locked to the side of the female rubber core (1) by fasteners, and the second grounding piece (4) is locked to the side of the male rubber core (2) by fasteners. The first grounding piece (3) and the second grounding piece (4) are in contact, and the first grounding piece (3) or the second grounding piece (4) is grounded through a terminal block.

2. The multi-core connector according to claim 1, characterized in that, The male core (2) has a protrusion (201) on its side. The inner side of the protrusion (201) is hollowed out. The contact end of the first grounding piece (3) and the contact end of the second grounding piece (4) are both located on the inner side of the protrusion (201) and in contact.

3. The multi-core connector according to claim 2, characterized in that, The first grounding piece (3) and the second grounding piece (4) each include a main body (8) and an extension (9) connected to one end of the main body (8). The main body (8) is locked to the female core (1) or the male core (2) by fasteners, and the extension (9) extends to the inside of the boss (201).

4. The multi-core connector according to claim 3, characterized in that, In the two extensions (9) corresponding to the first grounding piece (3) and the second grounding piece (4) in contact, one of the extensions (9) extends toward the side away from the boss (201) and forms a fastening part (10), and the other extension (9) extends toward the side of the boss (201) and forms an abutting part (11). The fastening part (10) can be fastened to the female core (1) or the male core (2), and the abutting part (11) abuts against the inner wall of the boss (201) so that the two extensions (9) are always in contact.

5. The multi-core connector according to claim 3, characterized in that, It also includes a housing, and the female core (1) and the male core (2) are both disposed inside the housing.

6. The multi-core connector according to claim 5, characterized in that, The first grounding plate (3) and the second grounding plate (4) further include fixing parts (12) that are vertically connected to both sides of the extension (9). The two fixing parts (12) lock the female core (1) or the male core (2) to the outer shell by fasteners and can lock the outer shell to the panel.

7. The multi-core connector according to any one of claims 1-6, characterized in that, Two of the first grounding piece (3) and two of the second grounding piece (4) are provided. The two first grounding pieces (3) are symmetrically arranged on the two sides of the female rubber core (1), and the two second grounding pieces (4) are symmetrically arranged on the two sides of the male rubber core (2).

8. The multi-core connector according to any one of claims 1-6, characterized in that, Both the first grounding piece (3) and the second grounding piece (4) are elastic metal sheets.

9. The multi-core connector according to any one of claims 1-6, characterized in that, The male core (2) has a guide protrusion (202) on its inner side, and the female core (1) has a guide groove (101) on its outer side that cooperates with the guide protrusion (202) for guidance.

10. The multi-core connector according to any one of claims 1-6, characterized in that, The core hole (5) is provided with 16-80 holes.

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