Shielding shell and connector

Abstract

The shielding shell and the connector belong to the field of connecting devices. The shielding shell comprises a shielding main body, a signal shielding cavity on the shielding main body, and a grounding shielding groove further arranged on the shielding main body. The groove opening part of the grounding shielding groove is located at the front end face of the shielding main body. The groove bottom part of the grounding shielding groove is of a closed structure. The shape of the grounding shielding groove is matched with the shape of the grounding pin or the grounding shielding piece. The rear end of the shielding main body is provided with a conductive connection structure for conducting with the grounding terminal and / or the shielding sheet on the terminal module. The conductive connection structures corresponding to the same terminal module are arranged into at least one row along the longitudinal direction of the terminal module. The connector comprises the above shielding shell. The bottom part of the grounding shielding groove for accommodating the grounding pin or the grounding shielding piece is closed, so that the electromagnetic wave radiation of the grounding pin or the grounding shielding piece is prevented from leaking and affecting the high-speed transmission of the differential signal.

Description

Technical Field

[0001] This utility model belongs to the field of connection devices, and in particular relates to shielding shells and connectors. Background Technology

[0002] In order to reduce crosstalk between differential pairs in high-speed connectors, a shielding shell is often set inside the housing. The shielding shell has a shielding cavity to accommodate the differential pairs, and the differential pairs can get a fully enclosed shielding effect inside the shielding cavity.

[0003] Chinese invention patent application CN118099863A discloses an electrical connector, which includes a terminal module and a shielding shell. The terminal module includes an insulator, signal terminals fixed on the insulator, and a shielding plate. The signal terminals are arranged longitudinally along the insulator, and the shielding plate is disposed on both sides of the insulator. The shielding shell has a through-hole along the mating direction (i.e., the front-to-back direction). A shielding mesh, which is in communication with the shielding shell, is installed at the front end of the shielding shell. The shielding mesh has mating clearance holes corresponding to the mating holes. The shielding mesh has spring claws that extend into the mating holes for the grounding pins of the mating connector to be inserted and can make contact with the grounding pins of the mating connector. The shielding plate has grounding spring arms that extend into the mating holes for the grounding pins of the mating connector to be inserted and can make contact with the grounding pins of the mating connector. The above structure enables mutual conductivity between the shielding plate, the shielding shell, and the grounding pins of the mating connector during use, thus improving the shielding effect.

[0004] In the aforementioned electrical connectors, since the spring arm on the shield needs to make contact with the grounding pin on the mating connector, the corresponding mating cavity on the shield shell needs to be connected along the mating direction. The end of the grounding pin can radiate electromagnetic waves outward, and the radiated electromagnetic waves are prone to leak out from the rear port of the mating cavity, thereby affecting the transmission of differential signals and hindering the realization of signal transmission at 112Gbps, 224Gbps and higher speeds. Utility Model Content

[0005] One of the objectives of this invention is to provide a shielding shell to solve the technical problem in the prior art where the conductive body used for grounding and shielding is designed with a through-hole enclosure, causing electromagnetic waves radiated from the grounding pin to easily leak and affecting the higher-speed signal transmission of differential pairs.

[0006] Another objective of this invention is to provide a connector to solve the aforementioned technical problems.

[0007] To achieve the above objectives, the technical solution of the grounding shield provided by this utility model is as follows:

[0008] The shielding shell includes a shielding body, on which a signal shielding cavity for accommodating signal terminals is provided through the front-to-back direction. The shielding body also has a grounding shielding groove for accommodating grounding pins or grounding shields on a mating connector. The opening of the grounding shielding groove is located at the front end face of the shielding body, and the bottom of the grounding shielding groove is a closed structure. The shape of the grounding shielding groove can match the shape of the grounding pin or grounding shield. The rear end of the shielding body is provided with a conductive connection structure for conducting with grounding terminals and / or shielding sheets on a terminal module. Each conductive connection structure corresponding to the same terminal module is arranged in at least one row along the longitudinal direction of the terminal module.

[0009] Furthermore, the grounding shielding groove is used to accommodate the grounding shielding component on the mating connector. The number of grounding shielding grooves is equal to the number of signal shielding cavities and corresponds one-to-one. The shape of the grounding shielding groove is either C-shaped, forming a semi-enclosed state of the corresponding signal shielding cavity, or U-shaped, forming a fully enclosed state of the corresponding signal shielding cavity.

[0010] Furthermore, the grounding shielding groove is used to accommodate the grounding pin on the mating connector, and the grounding shielding groove and signal shielding cavity corresponding to the same terminal module are arranged alternately along the longitudinal direction of the terminal module.

[0011] Furthermore, the sidewall of the grounding shielding groove is provided with contact protrusions for making contact and conducting with the grounding pin or the grounding shield.

[0012] Furthermore, the conductive connection structure is a plug-in protrusion or plug-in notch provided on the shielding body. The plug-in protrusion or plug-in notch on the shielding body is used to plug into and cooperate with the plug-in notch or plug-in protrusion on the shielding sheet so that the two are mutually conductive.

[0013] Furthermore, the rear end face of the shielding body is also integrally provided with a longitudinally extending protrusion for separating each terminal module, and the plug-in protrusions for plugging into the plug-in notch on the same shielding sheet are all integrally connected to the same protrusion.

[0014] Furthermore, the conductive connection structure includes a plug-in piece or plug-in tube inserted into the rear end of the shielding body and communicating with the shielding body. The plug-in piece or plug-in tube is used to engage with the plug-in notch on the edge of the shielding sheet so that the two communicate with each other.

[0015] The beneficial effects are as follows: The shielding shell provided by this utility model is an improvement on the existing technology. The grounding shielding groove in this utility model has a closed-bottom structure, which can comprehensively shield electromagnetic waves radiated from the grounding pins or the end of the grounding shielding component on the mating connector, preventing these electromagnetic waves from leaking out from the shielding shell away from the mating end of the connector and affecting the high-speed transmission of differential signals. Furthermore, the shielding shell is conductive with the shielding sheet and / or grounding terminal in the terminal module, thereby ensuring signal return from the shielding shell and guaranteeing a better shielding effect.

[0016] To achieve the above objectives, the technical solution for the connector provided by this utility model is as follows:

[0017] The connector includes an insulating shell, a shielding shell, and a terminal module. The shielding shell includes a shielding body with a signal shielding cavity extending through it along the mating direction to accommodate a signal terminal. The shielding body also has a grounding shielding groove for accommodating a grounding pin or grounding shield on the mating connector. The groove opening is located at the front end of the shielding body, and the bottom of the groove is closed. The shape of the grounding shielding groove can match the shape of the grounding pin or grounding shield. The rear end of the shielding body has a conductive connection structure for communicating with the grounding terminal and / or shielding sheet on the terminal module. The conductive connection structures corresponding to the same terminal module are arranged in at least one row along the longitudinal direction of the terminal module.

[0018] Furthermore, the grounding shielding groove is used to accommodate the grounding shielding component on the mating connector. The number of grounding shielding grooves is equal to the number of signal shielding cavities and corresponds one-to-one. The shape of the grounding shielding groove is either C-shaped, forming a semi-enclosed state of the corresponding signal shielding cavity, or U-shaped, forming a fully enclosed state of the corresponding signal shielding cavity.

[0019] Furthermore, the grounding shielding groove is used to accommodate the grounding pin on the mating connector, and the grounding shielding groove and signal shielding cavity corresponding to the same terminal module are arranged alternately along the longitudinal direction of the terminal module.

[0020] Furthermore, the connector also includes a shielding mesh installed on the front side of the shielding shell. The shielding mesh is in contact with the front side of the shielding shell and is provided with contact claws. The contact claws are used to make contact with the grounding pin or grounding shield when the grounding pin or grounding shield of the mating connector is inserted into the grounding shield groove.

[0021] Furthermore, the sidewall of the grounding shielding groove is provided with contact protrusions for making contact and conducting with the grounding pin or the grounding shield.

[0022] Furthermore, the terminal module includes an insulator, a signal terminal fixed on the insulator, and a shielding plate installed on at least one side of the insulator in the lateral direction. One of the shielding plate and the shielding body is provided with a plugging protrusion, and the other is provided with a plugging notch. After the plugging notch and the plugging protrusion are plugged in and engaged, the shielding plate and the shielding shell are mutually conductive. The plugging protrusion or plugging notch at the rear end of the shielding shell constitutes the conductive connection structure.

[0023] Furthermore, the rear end face of the shielding body is also integrally provided with a longitudinally extending protrusion for separating each terminal module, and the plug-in protrusions for plugging into the plug-in notch on the same shielding sheet are all integrally connected to the same protrusion.

[0024] Furthermore, the conductive connection structure includes a plug-in piece or plug-in cylinder inserted into the rear end of the shielding body and communicating with the shielding body. The terminal module includes an insulator, a signal terminal fixed on the insulator, and a shielding plate installed on at least one side of the insulator in the transverse direction. The shielding plate has a plug-in notch on one side edge facing the shielding shell. After the plug-in notch is plugged into the plug-in piece or plug-in cylinder, the shielding plate and the plug-in piece or plug-in cylinder are communicating with each other.

[0025] The beneficial effects are as follows: The connector provided by this utility model is an improvement on the existing technology. The grounding shielding groove in this utility model has a closed-bottom structure, which can comprehensively shield electromagnetic waves radiated from the grounding pins or the end of the grounding shielding component on the mating connector, preventing these electromagnetic waves from leaking out from the direction away from the mating end of the connector and affecting the high-speed transmission of differential signals. Furthermore, the shielding shell is conductive with the shielding sheet and / or grounding terminal in the terminal module, thereby ensuring signal return from the shielding shell and guaranteeing a better shielding effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the connector in Embodiment 1 of the present invention;

[0027] Figure 2 This is an exploded view of the connector in Embodiment 1 of the connector of this utility model;

[0028] Figure 3 This is a cross-sectional view of the connector in Embodiment 1 of the connector of this utility model;

[0029] Figure 4 for Figure 3 A partial schematic diagram of point A in the middle;

[0030] Figure 5 This is a schematic diagram of the conductive connection structure in Embodiment 1 of the connector of this utility model;

[0031] Figure 6This is a partial cross-sectional view of the shielding shell in Embodiment 1 of the connector of this utility model;

[0032] Figure 7 This is a partial structural diagram of the end face of the shielding shell near the mating end of the connector in Embodiment 1 of the connector of this utility model;

[0033] Figure 8 This is a schematic diagram of the shielding mesh structure in Embodiment 1 of the connector of this utility model;

[0034] Figure 9 This is a cross-sectional view of the connector in Embodiment 2 of the connector of this utility model;

[0035] Figure 10 for Figure 9 A partial schematic diagram at point B in the middle;

[0036] Figure 11 This is a schematic diagram of the shielding shell structure in Embodiment 2 of the connector of this utility model;

[0037] Figure 12 This is a partial cross-sectional view of the shielding shell in Embodiment 2 of the connector of this utility model;

[0038] Figure 13 This is a schematic diagram of the shielding shell structure in Embodiment 3 of the connector of this utility model;

[0039] Figure 14 Crosstalk comparison curves between the shielding shell provided by this utility model and the shielding shell using conventional shielding shells.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Insulating shell; 2. Shielding shell; 21. Shielding body; 22. Signal shielding cavity; 23. Grounding shielding groove; 24. Plug protrusion; 241. Insertion part; 242. Limiting part; 25. Raised ridge; 3. Terminal module; 31. Insulator; 32. Signal terminal; 33. Shielding sheet; 331. Plug notch; 4. Plug connector; 41. Grounding pin; 42. Grounding shield; 43. Signal pin; 5. Plug tube; 6. Shielding mesh; 61. Contact spring claw. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the embodiments.

[0043] To address the problems in the prior art, the basic concept of this utility model is to design the grounding shielding groove for accommodating the grounding pin or grounding shield as having a closed bottom, thereby preventing the leakage of electromagnetic waves radiated by the grounding pin or grounding shield from affecting the high-speed transmission of differential signals.

[0044] Specific embodiment 1 of the connector provided by this utility model:

[0045] See appendix Figure 1 and attached Figure 2 The connector has one end that is used to mate with the mating connector 4 as its front end. The connector includes an insulating shell 1, a shielding shell 2 and multiple terminal modules 3 arranged from front to back. The rear end of the insulating shell 1 is provided with an installation space for the shielding shell 2 and each terminal module 3 to be installed. The assembly and connection relationship between the insulating shell 1, the shielding shell 2 and the terminal modules 3 is prior art and will not be described in detail.

[0046] See appendix Figure 3 and attached Figure 4 The terminal module 3 includes an insulator 31, signal terminals 32 fixed on the insulator 31 and arranged longitudinally, and shielding plates 33 installed on both sides of the insulator 31 laterally. A pair of signal terminals 32 for transmitting differential signals constitute a differential pair.

[0047] See appendix Figure 5 Appendix Figure 6 and appendix Figure 7 In this embodiment, the shielding shell 2 is a metal part processed by MIM process. In other embodiments, the shielding shell 2 can also be a conductive plastic part or formed by setting a conductive layer on the surface of an insulating plastic part.

[0048] The shielding shell 2 includes a shielding body 21, on which signal shielding cavities 22 and grounding shielding grooves 23 are provided. The number of signal shielding cavities 22 and grounding shielding grooves 23 are equal and they are arranged in a one-to-one correspondence. The signal shielding cavity 22 is a through hole that penetrates the shielding body 21 along the insertion direction, that is, the front-to-back direction. During the assembly process, the differential pair passes through the signal shielding cavity 22 and extends into the corresponding opening on the insulating shell 1. The differential pair maintains a certain insulating distance from the four sides of the signal shielding cavity 22. The four sides of the signal shielding cavity 22 form a fully enclosed shield for the differential pair.

[0049] The opening of the grounding shielding groove 23 is located at the front end face of the shielding body 21, and the bottom of the grounding shielding groove 23 is a closed structure. In this embodiment, the plug connector 4 is provided with a signal pin 43 for plugging into the signal terminal 32, and also with a grounding shield 42 for shielding the signal pin 43. One end of the grounding shield 42 is used to insert into the corresponding grounding shielding groove 23, and the other end is provided with a fisheye for pressing with the printed circuit board.

[0050] The shape of the grounding shielding groove 23 matches the shape of the grounding shielding component 42. Specifically, in this embodiment, the grounding shielding groove 23 includes a C-shaped grounding shielding groove 23 that can form a semi-enclosed shape to the corresponding signal shielding cavity 22. This type of grounding shielding groove 23 can accommodate a grounding shielding component 42 that also has a C-shaped structure. In this embodiment, the grounding shielding groove 23 also includes a U-shaped grounding shielding groove 23 that can form a full enclosed shape to the corresponding signal shielding cavity 22. This type of grounding shielding groove 23 can accommodate a grounding shielding component 42 that also has a U-shaped structure, or it can accommodate a C-shaped grounding shielding component 42 and a flat plate-shaped grounding shielding component 42 used to close one side of the C-shaped grounding shielding component 42 together. The different shapes of the grounding shielding groove 23 are set according to the arrangement of the grounding shielding component 42, and will not be described in detail here.

[0051] The connector also includes a shielding mesh 6, see Appendix Figure 4 The shielding mesh 6 is installed at the front end of the shielding shell 2. Specifically, the shielding mesh 6 is sandwiched between the shielding shell 2 and the insulating shell 1, and the shielding mesh 6 is in contact with and conductively connected to the shielding shell 2. See Appendix. Figure 8 The shielding mesh 6 has openings at corresponding positions in each signal shielding cavity 22 and grounding shielding groove 23, allowing the signal pins 43 and grounding shield 42 on the mating connector 4 to pass through. The shielding mesh 6 also has contact spring claws 61 at corresponding positions in each grounding shielding groove 23. These contact spring claws 61 can make contact with the grounding shield 42 when it is inserted into the grounding shielding groove 23, thus enabling the grounding shield 42, shielding mesh 6, and shielding shell 2 to be grounded.

[0052] In this embodiment, the inner wall of the grounding shielding groove 23 maintains a certain distance from the grounding shield 42, and the inner wall of the grounding shielding groove 23 and the grounding shield 42 are in a non-contact state, which can reduce the resistance of the grounding shield 42 when inserted into the grounding shielding groove 23 and reduce the difficulty of connector mating.

[0053] The rear end of the shielding body 21 is also provided with a conductive connection structure for communicating with the shielding sheet 33. The conductive connection structure is a plug-in tube 5 inserted into the shielding body 21. The plug-in tube 5 is a metal tube and is in contact with the shielding body 21 for communication. A plug-in tube 5 is provided at the position of each signal shielding cavity 22. During assembly, the front end of the signal terminal 32 passes through the corresponding plug-in tube 5.

[0054] Multiple pairs of insertion notches 331 are provided on one side edge of the shielding plate 33 facing the shielding shell 2. Each pair of insertion notches 331 is inserted into the opposite side walls of a plug-in tube 5. After the insertion notches 331 and the plug-in tube 5 are inserted into each other, the shielding plate 33, the plug-in tube 5 and the shielding shell 2 are interconnected.

[0055] In other embodiments, the conductive connection structure may also be a plug-in piece inserted into the shielding body. The plug-in piece is a metal sheet, and it makes contact with the shielding body for electrical communication. The plug-in pieces are disposed between adjacent signal shielding cavities, and the plug-in pieces and shielding sheets are arranged perpendicular to each other. The rear end of the plug-in piece engages with a notch on the shielding sheet to make the plug-in piece, shielding sheet, and shielding shell mutually conductive.

[0056] In this embodiment, a grounding terminal can be provided in the terminal module 3. The grounding terminal and the differential pair are arranged alternately along the arrangement direction. The grounding terminal has multiple sockets along its extension direction, and the shielding plate 33 has inserts that extend laterally and are interference-fitted with the corresponding sockets, so that the grounding terminal and the shielding plate 33 are connected to the same ground. In other embodiments of this embodiment, the grounding terminal may be omitted if necessary, and the shielding plate 33 may have fisheyes for pressing with the printed circuit board.

[0057] Because the bottom of the grounding shielding groove 23 is a closed structure, it can form a good enclosure and shielding effect on the end of the grounding shield 42. The electromagnetic waves radiated by the grounding shield 42 cannot leak backward, reducing the electromagnetic interference received by the signal terminal 32 in the connector. The electromagnetic waves radiated by the grounding shield 42 are shielded by the shielding body 21, thereby forming a return current within the shielding body 21. The return current path is as follows: Figure 4 As shown by the arrow in the image.

[0058] See appendix Figure 14 Compared to conventional shielding shell 2, the crosstalk effect is significantly improved after applying the shielding shell 2 provided by this utility model. The crosstalk optimization in the high frequency range (30GHz-37GHz) can reach about 10dB. In the figure, the red line represents the crosstalk level after applying the shielding shell 2 provided by this utility model, and the blue line represents the crosstalk level after applying the conventional shielding shell 2.

[0059] Specific embodiment 2 of the connector provided by this utility model:

[0060] This embodiment is based on Embodiment 1, and the difference between it and Embodiment 1 is as follows (see Appendix). Figure 9 Appendix Figure 10 Appendix Figure 11 and appendix Figure 12 In this embodiment, the grounding shield 42 is no longer provided on the plug connector 4, but instead a grounding pin 41 is provided, and the grounding pin 41 and the signal pin 43 are arranged alternately.

[0061] In this embodiment, the cross-sectional shape of the grounding shielding groove 23 perpendicular to the insertion direction is rectangular, and the grounding shielding groove 23 and the signal shielding cavity 22 corresponding to the same terminal module 3 are arranged alternately.

[0062] During the mating process, the signal pin 43 on the mating connector 4 enters the signal shielding cavity 22 and mates with the signal terminal 32. The grounding pin 41 on the mating connector 4 enters the grounding shielding groove 23 and maintains a certain distance from the inner wall of the grounding shielding groove 23. In this embodiment, the grounding shielding groove 23 can also form a good shielding effect on the end of the grounding pin 41, preventing the electromagnetic waves radiated by the grounding pin 41 from leaking from the rear end of the shielding shell 2. In this embodiment, the electromagnetic waves radiated by the grounding pin 41 are shielded by the shielding body 21, thereby forming a return flow within the shielding body 21. The return flow path is as follows: Figure 11 As shown by the arrow in the image.

[0063] In this embodiment, the connection method between the shielding shell 2 and the shielding sheet 33 is the same as in Embodiment 1, and will not be described again.

[0064] Specific embodiment 3 of the connector provided by this utility model:

[0065] This embodiment is based on Embodiment 1, but the conductive connection structure in this embodiment is different from that in Embodiment 1.

[0066] See appendix Figure 13 In this embodiment, the conductive connection structure specifically consists of a plug-in protrusion 24 protruding from the rear surface of the shielding body 21 and integrally formed with the shielding body 21. Multiple plug-in notches 331 are provided on the edge of the shielding sheet 33 facing the shielding shell 2. Each plug-in notch 331 engages with a plug-in protrusion 24. After the plug-in notch 331 and the plug-in protrusion 24 engage, the shielding sheet 33 and the shielding shell 2 are interconnected and conductive. In this embodiment, one terminal module 3 is provided with two shielding sheets 33, therefore, two rows of plug-in protrusions 24 are also provided, and the plug-in protrusions 24 in each row are arranged longitudinally. The number of plug-in notches 331 is one more than the number of differential pairs in the corresponding terminal module 3, and the plug-in notches 331 on the same shielding sheet 33 and the differential pairs in the corresponding terminal module 3 are arranged alternately along their respective arrangement directions.

[0067] The insertion protrusion 24 includes an insertion portion 241 for insertion into the insertion notch 331. The two side walls of the insertion notch 331 are provided with protrusion structures that can forcefully engage with the insertion portion 241. The two lateral sides of the insertion portion 241 are limiting portions 242. The longitudinal width of the limiting portions 242 is greater than the longitudinal width of the insertion portion 241. After the insertion protrusion 24 is inserted into the insertion notch 331, the limiting portions 242 on both sides of the insertion portion 241 are located on both sides of the shielding sheet 33 in the thickness direction. The structure of the wider limiting portions 242 and the narrower insertion portion 241 allows the two limiting portions 242 to limit the shielding sheet 33 laterally on both sides of the shielding sheet 33 in the thickness direction.

[0068] The rear end face of the shielding body 21 is also integrally provided with a longitudinally extending protrusion 25 for separating the various terminal modules 3. The insertion protrusions 24 that are inserted and engaged with the insertion notches 331 on the same shielding sheet 33 are all integrally connected to the same protrusion 25. By using the protrusion 25 to connect multiple insertion protrusions 24 together, the structure of each insertion protrusion 24 can be strengthened, thereby improving the service life of the shielding shell 2.

[0069] In this embodiment, both sides of the convex ridge 25 located between two adjacent terminal modules 3 are connected to insertion protrusions 24. The insertion protrusions 24 on both sides of the convex ridge 25 respectively mate with two adjacent shielding plates 33 on the two adjacent terminal modules 3. The insertion protrusions 24 connected on both sides of the convex ridge 25 are arranged symmetrically in the lateral direction. In other embodiments, the insertion protrusions 24 on both sides of the convex ridge 25 may also be arranged asymmetrically according to the mating requirements.

[0070] In other embodiments, the insertion notch can be located on the rear end face of the shielding shell, while the insertion protrusion is located at the front end of the shielding sheet. During assembly, the insertion protrusion on the shielding sheet is inserted forward into the insertion notch on the shielding shell, which also enables the connection and conduction between the shielding sheet and the shielding shell.

[0071] Specific embodiment 4 of the connector provided by this utility model:

[0072] This embodiment is based on Embodiment 1, but differs in that the insertion structure on the shielding shell in this embodiment is specifically a slot. A finger is provided on the edge of the shielding sheet facing the shielding shell, capable of being inserted into the slot, and the finger is forcibly fitted into the slot. In this embodiment, the cooperation between the finger and the slot also enables the shielding sheet and the shielding shell to connect and conduct electricity.

[0073] Specific embodiment 5 of the connector provided by this utility model:

[0074] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that, in addition to the plug-in protrusions for engaging with the plug-in notches on the shielding sheet, the plug-in structure in this embodiment also includes a slot provided on the shielding body. The terminal module also includes a grounding terminal fixed on the insulator. The end of the grounding terminal facing the plug-in end protrudes from the insulator and forms a finger that can be inserted into the slot. After the finger is inserted into the slot, the shielding shell and the grounding terminal can be connected and conduction can be achieved.

[0075] This embodiment allows the shielding shell, shielding sheet, and signal terminals to share a common ground for conduction, further shortening the signal return path and enhancing the shielding effect.

[0076] Specific embodiment 6 of the connector provided by this utility model:

[0077] This embodiment is based on Embodiment 1, but differs in that the insertion structure on the shielding shell in this embodiment is specifically a slot. The terminal module also includes a grounding terminal fixed to the insulator. The end of the grounding terminal facing the mating end protrudes from the insulator and forms a finger that can be inserted into the slot. After the finger is inserted into the slot, the shielding shell and the grounding terminal can be interconnected and conduction is achieved. The grounding terminal is provided with a socket, and the shielding plate is provided with a tab that is interference-fitted into the socket, so that the grounding terminal and the shielding plate are connected to a common ground.

[0078] The shielding sheet does not need to be directly connected to the shielding shell. Instead, it can be connected to the shielding shell through the grounding terminal, which can also achieve a good shielding effect.

[0079] Specific embodiment 7 of the connector provided by this utility model:

[0080] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the insertion protrusion in this embodiment has a structure of equal width, so there is no limiting part on the insertion protrusion for limiting the shielding sheet.

[0081] Specific embodiment 8 of the connector provided by this utility model:

[0082] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the shielding body in this embodiment no longer has protruding ridges, and each plug-in protrusion is arranged independently.

[0083] Specific embodiment 9 of the connector provided by this utility model:

[0084] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no shielding mesh is set in this embodiment. Instead, a protrusion structure is set on the inner wall of the grounding shielding groove. After the grounding pin on the plug connector is inserted into the grounding shielding groove, the protrusion structure contacts the grounding pin and conducts through the grounding pin.

[0085] Specific embodiments of the shielding shell provided by this utility model:

[0086] This shielding shell is the grounding shielding shell in a specific embodiment of the connector, and will not be described further.

[0087] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shield case comprising a shield body (21) having signal shield cavities (22) for accommodating signal terminals provided therethrough in a front-rear direction, characterized in that, The shielding body (21) is also provided with a grounding shielding groove (23) for accommodating the grounding pin or grounding shield on the mating connector. The groove opening of the grounding shielding groove (23) is located at the front end face of the shielding body (21). The bottom of the grounding shielding groove (23) is a closed structure. The shape of the grounding shielding groove (23) can match the shape of the grounding pin or grounding shield. The rear end of the shielding body (21) is provided with a conductive connection structure for conducting with the grounding terminal and / or shielding sheet on the terminal module (3). Each conductive connection structure corresponding to the same terminal module (3) is arranged in at least one row along the longitudinal direction of the terminal module (3).

2. The shield case according to claim 1, characterized by, The grounding shielding groove (23) is used to accommodate the grounding shield on the mating connector. The number of grounding shielding grooves (23) is equal to the number of signal shielding cavities (22) and they correspond one-to-one. The shape of the grounding shielding groove (23) is either a C-shape that forms a semi-enclosed state to the corresponding signal shielding cavity (22) or a square shape that forms a fully enclosed state to the corresponding signal shielding cavity (22).

3. The shield case according to claim 1, wherein The grounding shielding groove (23) is used to accommodate the grounding pin on the mating connector. The grounding shielding groove (23) and the signal shielding cavity (22) corresponding to the same terminal module (3) are arranged alternately along the longitudinal direction of the terminal module (3).

4. The shielded case according to any one of claims 1 to 3, characterized in that The sidewall of the grounding shielding groove (23) is provided with contact protrusions for making contact and conducting with the grounding pin or grounding shield.

5. The shielded case according to any one of claims 1-3, wherein, The conductive connection structure is a plug-in protrusion (24) or plug-in notch (331) provided on the shielding body (21). The plug-in protrusion (24) or plug-in notch (331) on the shielding body (21) is used to plug into and cooperate with the plug-in notch (331) or plug-in protrusion (24) on the shielding sheet (33) so that the two are mutually conductive.

6. The shield case according to claim 5, wherein The rear end face of the shielding body (21) is also integrally provided with a longitudinally extending protrusion (25) for separating each terminal module (3), and the insertion protrusion (24) for interlocking with the insertion notch (331) on the same shielding sheet (33) is integrally connected with the same protrusion (25).

7. The shielded case according to any one of claims 1-3, wherein, The conductive connection structure includes a plug-in piece or plug-in tube (5) inserted into the rear end of the shielding body (21) and connected to the shielding body (21). The plug-in piece or plug-in tube (5) is used to plug into the plug-in notch (331) on the edge of the shielding sheet (33) so that the two are connected to each other.

8. A connector, comprising an insulating shell (1), a shielding shell (2), and a terminal module (3), wherein the shielding shell (2) comprises a shielding body (21), and a signal shielding cavity (22) for accommodating signal terminals is provided through the shielding body (21) along the mating direction, characterized in that, The shielding body (21) is also provided with a grounding shielding groove (23) for accommodating the grounding pin or grounding shield on the mating connector. The groove opening of the grounding shielding groove (23) is located at the front end face of the shielding body (21). The bottom of the grounding shielding groove (23) is a closed structure. The shape of the grounding shielding groove (23) can match the shape of the grounding pin or grounding shield. The rear end of the shielding body (21) is provided with a conductive connection structure for conducting with the grounding terminal and / or shielding sheet on the terminal module (3). Each conductive connection structure corresponding to the same terminal module (3) is arranged in at least one row along the longitudinal direction of the terminal module (3).

9. The connector of claim 8, wherein, The grounding shielding groove (23) is used to accommodate the grounding shield on the mating connector. The number of grounding shielding grooves (23) is equal to the number of signal shielding cavities (22) and they correspond one-to-one. The shape of the grounding shielding groove (23) is either a C-shape that forms a semi-enclosed state to the corresponding signal shielding cavity (22) or a square shape that forms a fully enclosed state to the corresponding signal shielding cavity (22).

10. The connector of claim 8, wherein, The grounding shielding groove (23) is used to accommodate the grounding pin on the mating connector. The grounding shielding groove (23) and the signal shielding cavity (22) corresponding to the same terminal module (3) are arranged alternately along the longitudinal direction of the terminal module (3).

11. The connector of any one of claims 8-10, wherein, The connector also includes a shielding mesh installed on the front side of the shielding shell (2). The shielding mesh is in contact with the front side of the shielding shell (2). The shielding mesh is provided with contact claws, which are used to make contact with the grounding pin or grounding shield when the grounding pin or grounding shield of the mating connector is inserted into the grounding shield groove.

12. The connector according to any one of claims 8-10, characterized in that, The sidewall of the grounding shielding groove (23) is provided with contact protrusions for making contact and conducting with the grounding pin or grounding shield.

13. The connector of any one of claims 8-10, wherein, The terminal module (3) includes an insulator (31), a signal terminal (32) fixed on the insulator, and a shield (33) installed on at least one side of the insulator in the transverse direction. One of the shield (33) and the shield body (21) has a plug-in protrusion (24) and the other has a plug-in notch (331). After the plug-in notch (331) and the plug-in protrusion (24) are plugged in, the shield (33) and the shield shell (2) are mutually conductive. The plug-in protrusion (24) or the plug-in notch (331) at the rear end of the shield shell (2) constitutes the conductive connection structure.

14. The connector of claim 13, wherein, The rear end face of the shielding body (21) is also integrally provided with a longitudinally extending protrusion (25) for separating each terminal module (3), and the insertion protrusion (24) for interlocking with the insertion notch (331) on the same shielding sheet (33) is integrally connected with the same protrusion (25).

15. The connector according to any one of claims 8-10, characterized in that, The conductive connection structure includes a plug-in piece or plug-in tube (5) inserted into the rear end of the shielding body (21) and connected to the shielding body (21). The terminal module (3) includes an insulator (31), a signal terminal (32) fixed on the insulator (31), and a shielding plate (33) installed on at least one side of the insulator (31) in the transverse direction. The shielding plate (33) has a plug-in notch (331) on one side edge facing the shielding shell (2). After the plug-in notch (331) is plugged into the plug-in piece or plug-in tube (5), the shielding plate (33) and the plug-in piece or plug-in tube (5) are connected to each other.

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