A full shielded board end connector

Abstract

The application discloses a full shielding plate end connector, which comprises a plastic joint, an outer conductor assembly, an inner conductor assembly and a shielding baffle. The outer conductor assembly comprises an outer conductor base and an outer conductor sleeve, and an observation window for observing a center pin welding position is formed in the top of the outer conductor base; the shielding baffle is slidably arranged in the plastic joint, and an extension part of the shielding baffle extends into a plug-in cavity. When welding detection is performed on the product, the shielding baffle is kept to give way, and the observation window is open, so that the welding quality of the center pin can be visually checked; during plug-in assembly of the connector and a mating connector, the mating connector pushes the shielding baffle to slide and block the observation window. A deformation part is arranged on the side edge of the shielding baffle, and the deformation part is positioned and fixed at two stations by means of deformation pre-tightening force. The observation window is open during the welding detection stage, which is convenient for visual inspection; the shielding baffle automatically closes the observation window during the plug-in use stage, the welding visual detection and the full shielding performance in the use state are considered, the structure is compact, assembly is simple, and the full shielding plate end connector is suitable for a vehicle-mounted high-frequency multi-channel signal transmission scene.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, and particularly relates to a fully shielded plate-end connector. Background Technology

[0002] Multi-unit miniature surface-mount coaxial connectors, as core components of automotive electrical systems, are widely used in high-frequency signal transmission scenarios such as GPS navigation, mobile phone connectivity, and autonomous driving, thanks to their simple and reliable structure and good shielding performance. They primarily serve the functions of circuit connection and stable transmission of high-frequency signals. However, with the continuous improvement of automotive intelligence and integration, the requirements for frequency, accuracy, and anti-interference of high-frequency signal transmission in vehicles are also constantly increasing.

[0003] Currently, conventional surface mount coaxial connectors on the market typically have a dedicated inspection window in the shielding shell to visually inspect the surface mount technology (SMT) soldering status of the center pin section, in order to detect quality issues such as cold solder joints, detachment, and misalignment, and to ensure production soldering yield. While this design solves the production requirement of inspectable soldering status, it also compromises the integrity of the shielding structure. The permanent shielding gap formed by the inspection window reduces the overall electromagnetic shielding performance of the connector under high-frequency signal transmission conditions, causing problems such as external electromagnetic interference and internal signal leakage. This severely limits the high-frequency application band of the connector and makes it increasingly unable to meet the current automotive requirements for highly integrated, high-frequency, and high-stability signal transmission.

[0004] In summary, given the technical shortcomings of existing surface-mount coaxial connectors, such as the inability to simultaneously achieve solder observation and full shielding performance, and weak high-frequency anti-interference capabilities, it is necessary to design a connector structure that is simple in structure, easy to assemble, suitable for mass production, can achieve full shielding in the working state, and can meet the requirements of high-frequency multi-channel transmission. Summary of the Invention

[0005] The purpose of this invention is to provide a fully shielded board-end connector to solve the technical problems of existing surface-mount coaxial connectors, which cannot simultaneously achieve convenient soldering and inspection, full shielding performance during operation, and insufficient high-frequency anti-interference capability.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fully shielded board-end connector, soldered onto a circuit board for mating with a mating connector, includes:

[0008] A plastic connector, wherein the plastic connector has an internally formed insertion cavity and a snap-fit ​​structure is provided on the top of the plastic connector;

[0009] An outer conductor assembly includes an outer conductor base and an outer conductor sleeve connected to the outer conductor base. The outer conductor sleeve is inserted into the insertion cavity, and the bottom of the outer conductor base is provided with a clearance groove that communicates with the outer conductor sleeve.

[0010] The outer guide base has a mounting surface that fits against the circuit board; the mounting surface is vertically provided with solder feet for welding and fixing to the circuit board, and the top of the outer guide base also has an observation window;

[0011] An inner conductor assembly is disposed in the inner cavity of the outer conductor sleeve through the clearance groove. The inner conductor assembly includes an insulating medium and a central pin embedded in the insulating medium. The central pin also includes a soldering section extending toward the outer conductor base for surface mount soldering to a circuit board. The soldering section is exposed outside the outer conductor sleeve and is within the vertical viewing range of the observation window.

[0012] A shielding plate is slidably disposed inside the plastic connector, and the shielding plate is partially located on the mating path of the connector. Before the fully shielded plate connector and the mating connector are assembled, the welding status of the center pin can be visually inspected through the observation window. When the fully shielded plate connector and the mating connector are assembled, the mating connector can abut against the shielding plate and push the shielding plate to slide towards the outer guide base until it completely covers the observation window.

[0013] Furthermore, a sliding platform extending toward the plastic joint is provided on the top outer periphery of the observation window. The opening size of the sliding platform is larger than the opening size of the observation window. A sliding groove is provided on the plastic joint corresponding to the position of the sliding platform, so that the shielding baffle can slide back and forth along the sliding groove and the sliding platform.

[0014] Furthermore, the shielding plate includes a shielding part and an extension part. The outline size of the shielding part is adapted to the opening size of the slide table and can completely cover the observation window. The extension part extends from the shielding part toward the insertion end of the plastic connector. The extension part passes through the slide groove and extends into the insertion cavity.

[0015] Furthermore, the side of the shielding part is formed with a deformable part. When the shielding part is slidably housed in the slide, the deformable part elastically abuts against the inner sidewall of the slide, and the pre-tightening force generated by the elastic deformation keeps the shielding baffle fixed.

[0016] Furthermore, multiple outer guide sleeves are arranged side by side, and the number of inner conductor assemblies and observation windows is the same as the number of outer guide sleeves; the shielding part is a plurality of independent shielding structures corresponding one-to-one with each of the observation windows, or an integral shielding structure covering all the observation windows.

[0017] Furthermore, the width of the extension is smaller than the width of the shielding portion, and the width of the groove is greater than the width of the extension but less than the width of the shielding portion, so as to define the installation position of the shielding baffle.

[0018] Furthermore, the sliding groove of the plastic connector is provided with a limiting groove at one end near the sliding table, and the width of the limiting groove is adapted to the width of the shielding part; the shielding part of the shielding baffle is at least partially housed inside the limiting groove, and the deformable part elastically abuts against the inner sidewall of the limiting groove, thereby realizing the temporary positioning of the shielding baffle in the plastic connector when it is not inserted.

[0019] Furthermore, the deformable part is an elastic structure formed by stamping and grooving on both sides of the shielding part, and the outer contact edges on both sides of the deformable part protrude outward and have a smooth arc transition.

[0020] Furthermore, the center pin also includes a plug section and a fixing section; the plug section is used for electrical contact with the mating connector; the fixing section is fixed inside the insulating medium.

[0021] Furthermore, the plastic connector is an integral injection molded structure, and the outer conductor assembly is an integral die-cast metal part; the outer wall of the root of the outer guide sleeve is provided with an anti-detachment barb structure, the outer guide sleeve passes through the corresponding mounting hole of the plastic connector and extends into the insertion cavity, and is interference-fitted with the mounting hole by the anti-detachment barb structure.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. During the circuit board soldering and testing stage, the shielding baffle remains open and the observation window is open, allowing normal observation of the soldering status of the center pin soldering section; when used with the mating connector, the mating connector can automatically push the shielding baffle to slide and completely cover the observation window, restoring the outer conductor assembly to a complete shield, thus taking into account both the soldering observability and the full shielding requirements under working conditions.

[0024] 2. The shielding baffle is assembled via a sliding track formed by the sliding groove on the plastic connector and the sliding table on the outer guide base. The structure is simple and easy to assemble. It can be stably maintained by the elastic pre-tightening force of the deformation part in both the initial un-interlocked state (observation window open) and the connector-interlocked state (observation window covered). Structurally, it avoids the problem of the shielding baffle falling off or missing after assembly. The action of the shielding baffle covering the observation window is cleverly linked with the insertion action of the docking connector. No additional process or manual intervention is required, eliminating the hidden danger of forgetting or missing the observation window due to human error, and improving the reliability and consistency of product assembly. Attached Figure Description

[0025] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of a fully shielded plate-end connector provided in an embodiment of the present invention;

[0027] Figure 2 A front view of a fully shielded plate-end connector provided in an embodiment of the present invention;

[0028] Figure 3 Before the observation window of a fully shielded plate-end connector provided in this embodiment of the invention is covered, along... Figure 2 A three-dimensional view after being cut along the BB section line;

[0029] Figure 4 After the observation window of the fully shielded plate-end connector provided in this embodiment of the invention is covered, along... Figure 2 A three-dimensional view after being cut along the BB section line;

[0030] Figure 5 Before the observation window of a fully shielded plate-end connector provided in this embodiment of the invention is covered, along... Figure 2 A sectional view after being cut along section line AA in the image;

[0031] Figure 6 After the observation window of the fully shielded plate-end connector provided in this embodiment of the invention is covered, along... Figure 2 A three-dimensional view after being cut along the AA section line;

[0032] Figure 7 An exploded view of a fully shielded plate-end connector provided in an embodiment of the present invention.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1-Plastic connector, 11-Plug-in cavity, 12-Mounting hole, 13-Snap-fit ​​structure, 14-Slide groove, 15-Limiting groove,

[0035] 2-Outer conductor assembly, 21-Outer conductor sleeve, 211-Anti-detachment barb structure, 22-Outer conductor base, 221-Mounting surface, 222-Welding foot, 223-Allowing groove, 224-Observation window, 225-Slide table,

[0036] 3-Inner conductor assembly, 31-Insulating medium, 32-Center pin, 321-Welding section,

[0037] 4-Shielding baffle, 41-Shielding part, 42-Extension part, 43-Deformation part. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the front, back, top, bottom, left, and right directions mentioned in this embodiment are all defined with the insertion direction of the connector being the front and the side away from the insertion cavity 11 being the back; the side of the plastic connector 1 with the snap-fit ​​structure 13 being the top and the side of the outer guide base 22 with the solder foot 222 protruding being the bottom; the extension direction of the multiple sets of outer guide sleeves 21 arranged side by side being the left and right direction. These directional terms are only used to facilitate the description of this invention and simplify the explanation, 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. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0040] like Figures 1 to 7 As shown, this embodiment discloses a fully shielded plate-end connector, including a plastic connector 1, an outer conductor assembly 2, an inner conductor assembly 3, and a shielding baffle 4. Specifically:

[0041] In this embodiment, the plastic connector 1 is an integral injection-molded structure with an internal insertion cavity 11 for receiving the mating connector. The rear end of the insertion cavity 11 has a pre-set mounting hole 12 for inserting the outer conductor sleeve 21 of the outer conductor assembly 2. An integral snap-fit ​​structure 13 is provided on the top of the plastic connector 1 for snap-fitting with the mating connector. A groove 14 is provided on the plastic connector 1 at the position corresponding to the observation window 224 of the outer conductor base 22. The extension direction of the groove 14 is consistent with the insertion direction of the connector. A limiting groove 15 is also provided at one end of the groove 14 near the outer conductor base 22 of the outer conductor assembly 2. The width of the limiting groove 15 is greater than the width of the groove 14 and is adapted to the width of the shielding part 41.

[0042] The outer conductor assembly 2 is a one-piece die-cast metal part with good structural strength and shielding consistency. The outer conductor assembly 2 includes an outer conductor base 22 and an outer conductor sleeve 21 integrally connected to the outer conductor base 22. To adapt to vehicle-mounted multi-channel high-frequency signal transmission scenarios, as a preferred embodiment, two outer conductor sleeves 21 are arranged horizontally side-by-side. The two outer conductor sleeves 21 are inserted and fixed inside the insertion cavity 11 of the plastic connector 1 through the mounting holes 12 on the plastic connector 1. To achieve reliable fixation, the outer wall of the root of the outer conductor sleeve 21 is provided with an anti-detachment barb structure 211. The outer conductor sleeve 21 is press-fitted with the mounting holes 12 of the plastic connector 1 through the anti-detachment barb structure 211, preventing the outer conductor sleeve 21 from loosening, rotating, or shifting after assembly, thus ensuring the stability of the structural assembly.

[0043] The outer conductor base 22 has a mounting surface 221 that is horizontally aligned with the circuit board, and the mounting surface 221 has multiple vertically arranged solder feet 222 for soldering and fixing to the circuit board. The solder feet 222 are used to solder and fix the entire connector to the circuit board. To provide assembly space for the insertion and soldering of the inner conductor assembly 3, the bottom of the mounting surface 221 also has clearance grooves 223 that correspond one-to-one with the internal cavities of each outer conductor sleeve 21. This allows the inner conductor assembly 3 to be smoothly inserted into the outer conductor sleeve 21 from its rear end.

[0044] The top of the outer conductor base 22 is provided with an observation window 224. The number of observation windows 224 is the same as the number of outer conductor sleeves 21, and each observation window 224 is located directly above the welding section 321 of the corresponding center pin 32. The welding formation status of the welding section 321 of the center pin 32 below can be directly observed through the observation window 224, realizing rapid visual inspection of welding quality. The top of each observation window 224 is also provided with a horizontal slide 225. The slide 225 is specifically a stepped groove opened on the outer periphery of the observation window 224. The opening size of the slide 225 is larger than the opening size of the observation window 224, and extends towards the plastic connector 1. When the outer conductor assembly 2 is assembled and fixed with the plastic connector 1, the slide 225 on the outer conductor base 22 can be spliced ​​with the limiting groove 15 in the plastic connector 1, so that the sliding groove 14, the limiting groove 15, and the slide 225 together form a sliding track for the shielding baffle 4 to slide back and forth along the connector insertion and removal direction.

[0045] The number of inner conductor assemblies 3 is the same as the number of outer conductor sleeves 21. Each inner conductor assembly 3 passes through the clearance groove 223 and is coaxially inserted into the internal cavity of each outer conductor sleeve 21. Each inner conductor assembly 3 includes an insulating medium 31 and a center pin 32 coaxially embedded within the insulating medium 31. The center pin 32 includes a plug-in section, a fixing section, and a soldering section 321 arranged sequentially along the axial direction. The plug-in section is used for electrical contact with the mating connector; the fixing section is covered and fixed by the insulating medium 31; the soldering section 321 extends in a direction away from the plug-in end and is coaxially exposed outside the outer conductor sleeve 21. The soldering section 321 is located directly below the observation window 224 and is used for surface mounting soldering to the circuit board. The mounting surface 221 of the outer conductor base 22 and the axis of the soldering section 321 of the center pin 32 are on the same horizontal plane, thereby achieving surface mounting soldering.

[0046] The shielding plate 4 is slidably assembled in the plastic connector 1 via the sliding groove 14 and the limiting groove 15, and can slide along the sliding track formed by the sliding groove 14, the limiting groove 15, and the sliding table 225. The shielding plate 4 is an integral conductive metal plate formed by stamping metal sheet, including a shielding part 41 and an extension part 42. In this embodiment, since there are two observation windows 224, the shielding plate 4 also includes two shielding parts 41 corresponding to the observation windows 224. Both shielding parts 41 are integrally connected to the extension part 42, and the outer contour of each shielding part 41 is adapted to the opening size of the sliding table 225 above the corresponding observation window 224, so that they can slide into the corresponding sliding table 225 respectively and independently completely cover the opening at the top of their respective observation windows 224. It is understood that in other alternative embodiments, depending on actual needs, the shielding part 41 can also adopt an integrated shielding design, that is, a single metal sheet simultaneously covers all observation windows 224. In this solution, the slide 225 above the two observation windows 224 eliminates the intermediate partition and merges into an integrated large through slot. The outer contour dimensions of the integrated shielding part 41 are adapted to the opening size of this large through slot, which can simultaneously and completely cover all observation windows 224. Whether it is an integrated or independent shielding structure, it does not deviate from the core concept of this invention to achieve full shielding by automatically closing the observation windows 224 through docking action.

[0047] The shielding part 41 has deformable parts 43 formed on both sides corresponding to the width direction by a stamping and opening process. The outer contact edges of the deformable parts 43 on both sides protrude outward and have a smooth arc transition. The main body of the shielding part 41 is clearance-fitted with the limiting groove 15 and the slide table 225, while the deformable parts 43 are interference-fitted with the limiting groove 15 and the slide table 225. The extension part 42 extends from the shielding part 41 toward the insertion end of the plastic connector 1, and the width of the extension part 42 is smaller than the width of the shielding part 41. Correspondingly, the width of the slide groove 14 is greater than the width of the extension part 42 and less than the width of the shielding part 41, to ensure that the shielding baffle 4 is in the correct installation position during sliding assembly, so that the shielding part 41 is always constrained outside the insertion cavity 11, while the extension part 42 can penetrate the slide groove 14 and extend into the insertion cavity 11, and is located on the insertion path of the mating connector. When the fully shielded plate end connector and the mating connector are assembled, the mating connector can abut against the shielding baffle 4 and push the shielding baffle 4 to slide towards the outer guide base 22 until it completely covers the observation window 224.

[0048] In the initial state before being inserted with the connector, most of the shielding part 41 is housed inside the limiting groove 15 at the end of the slide groove 14 of the plastic connector 1. The deformable part 43 elastically abuts against the inner wall of the limiting groove 15. The pre-tightening force generated by the elastic deformation keeps the shielding baffle 4 temporarily positioned. At this time, all observation windows 224 are open, and the staff can directly observe the welding status of the welding section 321 of the center pin 32 and the circuit board through the observation windows 224.

[0049] When the fully shielded plate end connector and the mating connector are assembled, the insertion of the mating connector causes its front end face to abut against the extension 42 of the shielding baffle 4, applying a horizontal thrust towards the outer conductor base 22. This thrust drives the shielding baffle 4 to slide along the sliding track towards the slide table 225, causing the shielding part 41 to disengage from the limiting groove 15 and gradually slide into the slide table 225. When the mating connector is fully engaged, the shielding part 41 completely covers all the observation windows 224, while the deformation part 43 forms an elastic abutment with the inner wall of the slide table 225. The pre-tightening force generated by the elastic deformation keeps the shielding baffle 4 fixed in the closed position. At this time, all the observation windows 224 are reliably shielded, and the outer conductor assembly 2 returns to a complete fully shielded structure.

[0050] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fully shielded board-end connector, soldered onto a circuit board for mating with a mating connector, characterized in that, include: Plastic connector (1), the plastic connector (1) has a plug cavity (11) formed inside, and a snap-fit ​​structure (13) is provided on the top of the plastic connector (1). The outer conductor assembly (2) includes an outer conductor base (22) and an outer conductor sleeve (21) connected to the outer conductor base (22). The outer conductor sleeve (21) is inserted into the insertion cavity (11). The bottom of the outer conductor base (22) is provided with a relief groove (223) that communicates with the outer conductor sleeve (21). The outer guide base (22) has a mounting surface (221) that fits against the circuit board; the mounting surface (221) is vertically provided with solder feet (222) for soldering and fixing to the circuit board, and the top of the outer guide base (22) is also provided with an observation window (224). An inner conductor assembly (3) is disposed in the inner cavity of the outer conductor sleeve (21) through the clearance groove (223). The inner conductor assembly (3) includes an insulating medium (31) and a center pin (32) embedded in the insulating medium (31). The center pin (32) also includes a soldering section (321) extending toward the outer conductor base (22) for surface mounting soldering to the circuit board. The soldering section (321) is exposed in the outer conductor sleeve (21) and is within the vertical viewing range of the observation window (224). A shielding plate (4) is slidably disposed inside the plastic connector (1), and part of the shielding plate (4) is located on the mating path of the mating connector. Before the full shielding plate end connector and the mating connector are mated and assembled, the welding status of the center pin (32) can be visually inspected through the observation window (224). When the full shielding plate end connector and the mating connector are mated and assembled, the mating connector can abut against the shielding plate (4) and push the shielding plate (4) to slide towards the outer guide base (22) until the observation window (224) is completely covered.

2. The fully shielded plate-end connector according to claim 1, characterized in that: The top outer periphery of the observation window (224) is provided with a slide (225) extending toward the plastic connector (1). The opening size of the slide (225) is larger than the opening size of the observation window (224). The plastic connector (1) is provided with a groove (14) corresponding to the position of the slide (225), so that the shielding baffle (4) can slide back and forth along the groove (14) and the slide (225).

3. A fully shielded plate-end connector according to claim 2, characterized in that: The shielding plate (4) includes a shielding part (41) and an extension part (42). The outline size of the shielding part (41) is adapted to the opening size of the slide (225) and can completely cover the observation window (224). The extension part (42) extends from the shielding part (41) toward the plug-in end of the plastic connector (1). The extension part (42) passes through the slide groove (14) and extends into the plug-in cavity (11).

4. A fully shielded plate-end connector according to claim 3, characterized in that: The shielding part (41) has a deformable part (43) formed on its side. When the shielding part (41) is slidably stored in the slide (225), the deformable part (43) elastically abuts against the inner wall of the slide (225), and the shielding baffle (4) is kept fixed by the pre-tightening force generated by the elastic deformation.

5. A fully shielded plate-end connector according to claim 4, characterized in that: Multiple outer guide sleeves (21) are arranged side by side, and the number of inner conductor components (3) and observation windows (224) is the same as the number of outer guide sleeves (21); the shielding part (41) is a plurality of independent shielding structures corresponding one-to-one with each of the observation windows (224), or an integral shielding structure covering all the observation windows (224).

6. A fully shielded plate-end connector according to claim 5, characterized in that: The width of the extension (42) is smaller than the width of the shield (41), and the width of the groove (14) is greater than the width of the extension (42) and smaller than the width of the shield (41) to limit the installation position of the shielding plate (4).

7. A fully shielded plate-end connector according to claim 6, characterized in that: The sliding groove (14) of the plastic connector (1) is provided with a limiting groove (15) at one end near the sliding table (225). The width of the limiting groove (15) is adapted to the width of the shielding part (41). The shielding part (41) of the shielding baffle (4) is at least partially housed inside the limiting groove (15), and the deformable part (43) elastically abuts against the inner sidewall of the limiting groove (15), thereby realizing the temporary positioning of the shielding baffle (4) in the plastic connector (1) when it is not inserted.

8. A fully shielded plate-end connector according to claim 4, characterized in that: The deformable part (43) is an elastic structure formed by stamping and grooving on both sides of the shielding part (41). The outer contact edges on both sides of the deformable part (43) protrude outward and have a smooth arc transition.

9. A fully shielded plate-end connector according to claim 1, characterized in that: The center pin (32) further includes a plug section and a fixing section, wherein the plug section is used for electrical contact with the mating connector; and the fixing section is fixed inside the insulating medium (31).

10. A fully shielded plate-end connector according to claim 1, characterized in that: The plastic connector (1) is an integral injection molded structure, and the outer conductor assembly (2) is an integral die-cast metal part; the outer wall of the root of the outer guide sleeve (21) is provided with an anti-detachment barb structure (211), the outer guide sleeve (21) passes through the corresponding mounting hole (12) of the plastic connector (1) and extends into the insertion cavity (11), and is press-fitted with the mounting hole (12) through the anti-detachment barb structure (211).

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