Full shielded floating socket connector and assembly thereof

Abstract

The utility model discloses a kind of full shielding floating socket connector and its assembly, the socket connector includes fixed rubber core, movable rubber core, several socket terminals and shielding shell, movable rubber core is installed in the accommodation cavity in the way that can occur floating displacement relative to fixed rubber core, it has the plug-in hole for plug connector plugging;Several socket terminals are elastically arranged between fixed rubber core and movable rubber core, shielding shell is covered in the outer periphery of fixed rubber core, it is equipped with the contact spring for being elastically contacted with the butt joint shielding sheet when plug connector is inserted, contact spring is integrally formed with shielding shell body and extends to the top of fixed rubber core upwards, to form full circumferential electromagnetic shielding at plug interface.This application shielding shell is covered fixed rubber core as a whole, and full circumferential elastic contact structure is formed by the contact spring of integrally forming upwards extending on the contact surface of shielding shell, complete closed loop shielding is formed after plugging with plug butt joint shielding sheet, there is no shielding dead angle.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a fully shielded floating socket connector and its assembly. Background Technology

[0002] Currently, the spring structure used for shielding in floating board-to-board connectors generally adopts a cantilever design based on the connector's width extension. In this traditional structure, to meet the elastic deformation requirements and avoid irreversible plastic yielding, a large deformation clearance space must be reserved for the spring in the connector's width direction. This space requirement directly leads to a significant increase in the effective layout area of ​​the connector on the printed circuit board (PCB), not only occupying valuable board resources but also objectively becoming one of the main structural bottlenecks restricting the further miniaturization and narrowing of the overall connector size.

[0003] Furthermore, current shielding shells are all fully enclosed designs. Traditional shielding shells easily cover the SMT solder joint area and soldering area at the bottom, making it impossible to achieve full inspection coverage of soldering quality through conventional inspection methods such as manual visual inspection and automated optical inspection. Inspection methods are limited to indirect verification methods such as sampling dissection and power-on testing. This type of inspection not only has a very high risk of missing defects and cannot effectively identify potential failure defects such as cold solder joints and solder balls, but also adds extra inspection steps and production costs, severely restricting the mass production and large-scale application of products. Utility Model Content

[0004] To address the aforementioned technical issues, this application provides a fully shielded floating socket connector and its assembly, which can achieve full shielding performance while reducing the footprint of the board.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a fully shielded floating socket connector, comprising:

[0006] The fixing core is fixed to the circuit board, and its interior surrounds a receiving cavity;

[0007] A movable core is installed in the receiving cavity in a manner that allows it to float and shift relative to the fixed core, and has a plug hole for inserting and removing a plug connector.

[0008] A number of socket terminals are flexibly disposed between the fixed rubber core and the movable rubber core, and the electrical conduction is maintained by adapting to the floating displacement of the movable rubber core;

[0009] A shielding shell covers the outer periphery of the fixing core. The shielding shell is provided with a contact spring for elastically contacting the mating shield when the plug connector is inserted. The contact spring is integrally formed with the shielding shell and extends upward to the top of the fixing core to form full circumferential electromagnetic shielding at the mating interface.

[0010] Furthermore, the shielding shell includes a pair of long sidewalls and a pair of short sidewalls arranged opposite each other. The upper ends of the long sidewalls are bent inward to form long side contact surfaces, and the upper ends of the short sidewalls are bent inward to form short side contact surfaces. The contact spring includes a first spring at the top of the long sidewall and a second spring at the top of the short sidewall. The first spring and / or the second spring are formed by stamping and tearing and bending the top of the sidewall where they are located.

[0011] Furthermore, the second spring sheet located on the short sidewall is a contact protrusion stamped from the middle of the short side contact surface.

[0012] Furthermore, the first elastic piece disposed on the long side contact surface includes a first elastic arm extending obliquely upward and a second elastic arm that is bent in the opposite direction from the end of the first elastic arm and extends obliquely downward, with an abutment point formed between the first elastic arm and the second elastic arm.

[0013] Furthermore, the free end of the second elastic arm is provided with a clearance gap between it and the upper surface of the fixed rubber core.

[0014] Furthermore, the long side of the shielding shell is bent towards the fixing core to form a fixing hook, and the top of the fixing core is recessed inward to form a snap-fit ​​groove, and the fixing hook is fitted into the snap-fit ​​groove.

[0015] Furthermore, the side of the fixing hook is provided with at least one locking point protruding from the inner wall of the locking groove, the locking point being used to fix the shielding shell to the fixing core.

[0016] Furthermore, the long sidewall is provided with a plurality of observation holes along its length for observing the welding status of the terminals.

[0017] Furthermore, the outer side wall of the fixing core is provided with several guide ribs extending along the insertion direction, and the inner side wall of the shielding shell is slidably engaged with the guide ribs to restrict the rotation of the shielding shell relative to the fixing core.

[0018] This application also provides a connector assembly, including a fully shielded floating socket connector as described above and a plug connector mating with it. The plug connector includes an insulating base, a plurality of pairs of plug terminals fixed on the insulating base, and a mating shielding sheet is provided around the insulating base. The mating shielding sheet is attached to a circuit board.

[0019] When the plug connector and the fully shielded floating socket connector are in the mating state, the plug connector and the plug hole are mated and engaged, the plug terminal and the socket terminal are electrically connected, and the contact spring abuts against the mated shielding plate to achieve full shielding.

[0020] The beneficial effects of this utility model are as follows: The shielding shell of this application completely covers and fixes the rubber core, and forms a full-circumferential elastic contact structure by integrally forming an upwardly extending contact spring on the contact surface of the shielding shell, which reduces the space occupied on the board. After insertion, it forms a complete closed-loop shield with the plug-in mating shielding plate, without any shielding dead corners, which can effectively isolate external electromagnetic interference and prevent the leakage of its own high-speed signal, greatly improving the stability of high-speed signal transmission and adapting to high-precision, high-frequency and high-speed transmission scenarios. The shielding shell adopts a process of first drawing and then shaping, which does not require additional welding and assembly, resulting in strong overall structure, small assembly error and low production cost.

[0021] In addition, the observation holes on the long sidewalls allow for direct observation of the terminal welding status, facilitating rapid identification of welding defects and significantly improving production quality inspection efficiency. The overall structure is compact and lightweight, while the isolation between the docking shield and the terminals completely eliminates the risks of short circuits and interference, resulting in higher electrical safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the fully shielded floating socket connector in this embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the fully shielded floating socket connector in an embodiment of the present invention;

[0024] Figure 3 This is a side view of the fully shielded floating socket connector in an embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional schematic diagram of the fully shielded floating socket connector in an embodiment of this utility model;

[0026] Figure 5 for Figure 4 Enlarged schematic diagram of point A of the fully shielded floating socket connector;

[0027] Figure 6 This is a schematic diagram of the shielding shell structure of the fully shielded floating socket connector in this embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the overall structure of the plug connector of this utility model;

[0029] Figure 8 This is an exploded structural diagram of the plug connector of this utility model;

[0030] Figure label:

[0031] 1-Circuit board;

[0032] 2-Shielding shell, 20-Long sidewall, 21-Short sidewall, 201-Observation hole, 202-Long side contact surface, 203-Contact spring, 2030-First elastic arm, 2031-Second elastic arm, 2032-Contact point, 204-Allowing gap, 205-Fixing hook, 2050-Clack point, 210-Short side contact surface, 211-Contact protrusion, 22-Welding part;

[0033] 3-Fixing core, 30-Receiving cavity, 31-Guide rib, 32-Snap-fit ​​groove;

[0034] 4-Modible core, 40-Insertion hole;

[0035] 5-Socket terminal, 6-Circuit board, 7-Insulating base, 70-Guide part, 8-Plug terminal, 9-Mating shield. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0037] This application provides a fully shielded floating socket connector and its assembly, solving the problems of large space occupation by the shielding shell and inability to detect terminal soldering quality in existing floating socket connectors. It should be noted that in this application, the direction of the contact spring relative to the fixing core is upward, above, upper side, upper end, top, top tip, or top, while the opposite direction is downward, below, lower side, lower end, bottom, bottom tip, or bottom.

[0038] Example 1

[0039] Combination Figures 1 to 6 As shown, this embodiment provides a fully shielded floating socket connector, including a fixed core 3, a movable core 4, several socket terminals 5, and a shielding shell 2. The fixed core 3 is fixedly mounted on the surface of the circuit board 1, serving as the fixed base structure for the entire connector. The hollow interior of the fixed core 3 forms a closed receiving cavity 30, providing installation space and travel range for the floating movement of the movable core 4.

[0040] The movable core 4 is fitted and installed inside the receiving cavity 30 of the fixed core 3, with a pre-existing gap between the movable core 4 and the fixed core 3. Several socket terminals 5 are evenly and elastically assembled between the fixed core 3 and the movable core 4, allowing the movable core 4 to achieve a slight horizontal and radial floating displacement relative to the fixed core 3, thereby compensating for assembly alignment deviations during the plug-connector mating process. A insertion hole 40 is provided through the center of the movable core 4, extending along the vertical insertion direction, for precise insertion and removal of external plug-connectors to achieve mating alignment.

[0041] The socket terminal 5 is made of elastic conductive metal, which has good elastic deformation capability and conductivity. When the movable core 4 floats and shifts relative to the fixed core 3, the socket terminal 5 can undergo a slight elastic deformation synchronously with the displacement of the movable core 4, always maintaining a stable electrical conduction state, completely avoiding signal interruption, poor contact and other problems caused by floating displacement, and ensuring the continuity of electrical connection.

[0042] The shielding shell 2 employs a pre-drawing and post-shaping process, completely covering the outer periphery of the fixed core 3, achieving all-around shielding of the fixed core 3, the movable core 4, and the socket terminal 5. A contact spring 203 is integrally formed on the long side contact surface 202 of the shielding shell 2. The contact spring 203 extends upwards from the shielding shell 2 body, exceeding the upper surface of the fixed core 3 and reaching the connector's mating interface. When the plug connector is inserted into the mating hole 40, the contact spring 203 achieves elastic and tight contact with the plug connector's mating shield, forming a complete circumferential electromagnetic shielding closed loop at the mating interface. This effectively isolates external electromagnetic interference and prevents signal leakage from the connector itself, significantly improving the anti-interference capability of high-speed signal transmission.

[0043] Further integration Figure 2 , Figure 6 As shown, the shielding shell 2 has a rectangular frame structure, including a pair of long sidewalls 20 and a pair of short sidewalls 21 arranged symmetrically and oppositely. The pair of long sidewalls 20 and the pair of short sidewalls 21 are connected end to end to form a closed shielding frame. The bottom edges of the long sidewalls 20 and the short sidewalls are folded outward to form welding parts 22 for fixing to the circuit board 1. The upper end of the long sidewall 20 is bent inward to form a long side contact surface 202, and the upper end of the short sidewall 21 is bent inward to form a short side contact surface 210. The long side contact surface 202 and the short side contact surface 210 together form the annular mating contact surface at the top of the shielding shell 2, ensuring the integrity of the mating fit.

[0044] In this embodiment, the contact spring 203 specifically includes a first spring and a second spring. The first spring is correspondingly disposed on the long side contact surface 202 at the top of the long sidewall 20, and the second spring is correspondingly disposed on the short side contact surface 210 at the top of the short sidewall 21. The first spring and the second spring can both be integrally formed from the top of the corresponding sidewall through stamping, tearing, and bending processes, without the need for additional assembly and welding. This results in a strong overall structure and high structural stability, while simplifying the production process, reducing assembly errors, and ensuring the elasticity consistency and shielding reliability of the springs.

[0045] As a preferred option, such as Figure 6 As shown, the second spring piece disposed on the short sidewall 21 can be a contact bump 211. This contact bump 211 is formed by stamping upward from the middle position of the short side contact surface 210. The surface of the bump is smooth and has elastic deformation allowance. The raised contact bump 211 can accurately abut against the mating shield 9 of the plug connector. The contact points are concentrated and the contact pressure is stable, which can not only ensure the reliability of the shield contact, but also reduce the mating and plugging resistance, improve the mating and plugging feel and product lifespan.

[0046] Combination Figure 4 , Figure 5 As shown, the first elastic tab on the long side contact surface 202 specifically includes a first elastic arm 2030 extending obliquely upward, and a second elastic arm 2031 that is bent in the opposite direction from the top end of the first elastic arm 2030 and extends obliquely downward. The first elastic arm 2030 and the second elastic arm 2031 are symmetrically bent and enclosed, forming a raised abutment point 2032 between them. This bending structure significantly improves the elastic deformation stroke and elastic recovery force of the first elastic tab, which can effectively adapt to the assembly deviation during plug connector mating, ensuring that no matter whether there is a slight misalignment, the abutment point 2032 can be tightly fitted with the mating shield 9, without any loose connection or disconnection, ensuring the continuity of the full circumference shielding.

[0047] Furthermore, the free end of the second elastic arm 2031 is slightly upturned, and a clearance 204 is provided between its bottom end and the upper surface of the fixed core 3. For example, the clearance 204 can be 0.02mm. During the fastening process, it contacts the fixed core 3 and generates a reaction force, which can enhance the positive force. The free end of the second elastic arm 2031 can slide forward, which can effectively release concentrated stress and reduce the yielding. The clearance 204 can provide sufficient deformation space for the elastic downward deformation of the first elastic arm 2030, avoiding the problem of the second elastic arm 2031 rigidly hitting the fixed core 3 when it is pressed down, causing deformation jamming or spring deformation failure. This effectively protects the elastic structure and improves the stability and durability of the connector during repeated plugging and unplugging.

[0048] Refer again Figure 5 , Figure 6The long side contact surface 202 of the shielding shell 2 is bent into a fixing hook 205 facing the inner side of the fixing core 3. The inner side wall of the top of the fixing core 3 is correspondingly recessed and has a snap-fit ​​groove 32 that matches the fixing hook 205. The fixing hook 205 is precisely fitted into the snap-fit ​​groove 32, so as to achieve the initial axial and radial fixation of the shielding shell 2 and the fixing core 3, and prevent the shielding shell 2 from moving up and down or shifting relative to the fixing core 3.

[0049] To further enhance the fixing strength, at least one side of the fixing hook 205 is formed with a locking point 2050. The locking point 2050 protrudes from the inner wall surface of the locking groove 32. Through the interference fit between the locking point 2050 and the inner wall of the locking groove 32, the shielding shell 2 and the fixing core 3 are locked and fixed, completely eliminating the problem of the shielding shell 2 loosening or shifting, ensuring the stability of the overall structure, and adapting to long-term vibration and high and low temperature working environments.

[0050] like Figure 1 , Figure 3 As shown, multiple observation holes 201 are evenly spaced along the length of the long sidewall 20 of the shielding shell 2. The observation holes 201 are through-hole structures, and their positions correspond one-to-one with the soldering ends of the inner socket terminals 5. Workers can directly observe the soldering status of the socket terminals 5 on the circuit board 1 through the observation holes 201, quickly identifying soldering defects such as cold solder joints, missing solder joints, excessive or insufficient solder, without disassembling the connector, greatly improving product quality inspection efficiency and maintenance convenience. Simultaneously, the observation holes 201 can appropriately reduce the overall weight of the shielding shell 2, achieving a lightweight product design.

[0051] Combination Figure 2 , Figure 4 As shown, the outer wall of the fixing core 3 is integrally formed with several guide ribs 31. The guide ribs 31 extend vertically along the plug insertion direction (up and down direction) and are in the form of long strips. The inner wall of the shielding shell 2 slides and fits with the outer surface of the guide ribs 31 with a clearance fit. Through the limiting and guiding effect of the guide ribs 31, the circumferential rotation and left and right offset of the shielding shell 2 relative to the fixing core 3 can be effectively restricted, ensuring the assembly position accuracy of the shielding shell 2. At the same time, it provides guidance and positioning for the assembly of the shielding shell 2, which facilitates rapid assembly and improves production assembly efficiency.

[0052] Example 2

[0053] This embodiment provides a connector assembly, such as Figure 7 , Figure 8 As shown, the connector assembly includes the fully shielded floating socket connector described in Embodiment 1, and a plug connector that precisely mates with the socket connector, and the two work together to achieve a stable electrical connection and full-circuit electromagnetic shielding.

[0054] Specifically, the plug connector includes an insulating base 7, several plug terminals 8, and a mating shield 9. The plug terminals 8 are neatly fixed to the insulating base 7, corresponding one-to-one with the socket terminals 5. The mating shield 9 surrounds the outer periphery of the insulating base 7, and is integrally fixed to the surface of the external circuit board 6. The mating shield 9 is isolated from all plug terminals 8 and has no contact with them, completely preventing interference or short circuits to the signal terminals caused by the shielding structure, thus ensuring electrical safety. The insulating base 7 has protruding guide portions 70 at both ends, facilitating quick alignment and insertion of the plug connector into the socket connector's insertion holes 40, reducing assembly alignment difficulty.

[0055] After the plug connector and the fully shielded floating socket connector are fully assembled, the front end structure of the plug connector precisely mates and engages with the insertion hole 40 of the movable core 4, achieving radial and axial limiting and fixing. At this time, the plug terminal 8 and the socket terminal 5 elastically abut against each other, forming a complete signal transmission path and achieving stable electrical conduction. Simultaneously, the contact spring 203 at the top of the shielding shell 2 elastically presses against the surface of the mating shielding plate 9 of the plug connector, forming a continuous, closed-loop, full-circumferential shielding structure that completely covers all gaps at the mating interface, effectively blocking internal and external electromagnetic radiation and interference, and significantly improving the high-speed signal transmission stability and anti-interference performance of the connector assembly.

[0056] This utility model, through the above-mentioned structural design, utilizes the floating structure of the movable core 4 to achieve assembly deviation compensation, solving the problems of high alignment accuracy requirements and low assembly error tolerance of traditional connectors; at the same time, through the integrated full-circumferential contact spring 203 of the shielding shell 2, a dead-angle shielding closed loop is formed at the mating interface, taking into account the product assembly flexibility, connection stability and electromagnetic shielding performance, with a compact structure, long service life, and suitable for high-precision and high-speed electrical docking scenarios.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fully shielded floating socket connector, characterized in that, include: The fixing core is fixed to the circuit board, and its interior surrounds a receiving cavity; A movable core is installed in the receiving cavity in a manner that allows it to float and shift relative to the fixed core, and has a plug hole for inserting and removing a plug connector. A number of socket terminals are flexibly disposed between the fixed rubber core and the movable rubber core, and the electrical conduction is maintained by adapting to the floating displacement of the movable rubber core; A shielding shell covers the outer periphery of the fixing core. The shielding shell is provided with a contact spring for elastically contacting the mating shield when the plug connector is inserted. The contact spring is integrally formed with the shielding shell and extends upward to the top of the fixing core to form full circumferential electromagnetic shielding at the mating interface.

2. The fully shielded floating socket connector according to claim 1, characterized in that: The shielding shell includes a pair of long sidewalls and a pair of short sidewalls arranged opposite each other. The upper ends of the long sidewalls are bent inward to form long side contact surfaces, and the upper ends of the short sidewalls are bent inward to form short side contact surfaces. The contact spring includes a first spring at the top of the long sidewall and a second spring at the top of the short sidewall. The first spring and / or the second spring are formed by stamping and tearing and bending the top of the sidewall where they are located.

3. The fully shielded floating socket connector according to claim 2, characterized in that: The second spring sheet located on the short sidewall is a contact protrusion stamped from the middle of the short side contact surface.

4. The fully shielded floating socket connector according to claim 2, characterized in that: The first elastic piece disposed on the long side contact surface includes a first elastic arm extending obliquely upward and a second elastic arm that is bent in the opposite direction from the end of the first elastic arm and extends obliquely downward, with an abutment point formed between the first elastic arm and the second elastic arm.

5. The fully shielded floating socket connector according to claim 4, characterized in that: The free end of the second elastic arm has a clearance gap with the upper surface of the fixed rubber core.

6. The fully shielded floating socket connector according to claim 2, characterized in that: The long side of the shielding shell is bent towards the fixing core to form a fixing hook. The top of the fixing core is recessed inward and has a snap-fit ​​groove. The fixing hook is fitted into the snap-fit ​​groove.

7. The fully shielded floating socket connector according to claim 6, characterized in that: The side of the fixing hook is provided with at least one locking point protruding from the inner wall of the locking groove. The locking point is used to fix the shielding shell to the fixing core.

8. The fully shielded floating socket connector according to claim 2, characterized in that: The long sidewall is provided with multiple observation holes along its length for observing the welding status of the terminals.

9. The fully shielded floating socket connector according to claim 1, characterized in that: The outer side wall of the fixed core is also provided with several guide ribs extending along the insertion direction. The inner side wall of the shielding shell is slidably engaged with the guide ribs to limit the rotation of the shielding shell relative to the fixed core.

10. A connector assembly, characterized in that: Includes the fully shielded floating socket connector as described in any one of claims 1-9 and the plug connector mating thereto, wherein the plug connector includes an insulating base, a plurality of pairs of plug terminals fixed on the insulating base, and a mating shield is provided around the insulating base, the mating shield being attached to a circuit board; When the plug connector and the fully shielded floating socket connector are in the mating state, the plug connector and the plug hole are mated and engaged, the plug terminal and the socket terminal are electrically connected, and the contact spring abuts against the mated shielding plate to achieve full shielding.

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