Shielding shell and connector

Abstract

The invention provides a shielding shell and a connector, and belongs to the field of connecting devices. The shielding shell comprises a shielding main body and a signal shielding cavity on the shielding main body, the shielding main body is also provided with a grounding shielding groove, the notch part of the grounding shielding groove is located at the front end face of the shielding main body, the groove bottom of the grounding shielding groove is of a closed structure, and the shape of the grounding shielding groove is matched with the shape of a grounding pin or a grounding shielding piece. The rear end of the shielding main body is provided with conductive connection structures used for being conducted with grounding terminals and / or shielding sheets on the terminal modules, and the conductive connection structures corresponding to the same terminal module are arranged in at least one row along the longitudinal direction of the terminal modules. The connector comprises the shielding shell. According to the invention, the bottom of the grounding shielding groove for accommodating the grounding pin or the grounding shielding piece is closed, so that the high-speed transmission of differential signals is prevented from being influenced by the leakage of electromagnetic waves radiated by the grounding pin or the grounding shielding piece.

Description

Technical Field

[0001] The present invention belongs to the field of connection devices, and in particular relates to a shielding shell and a connector. Background Art

[0002] In order to reduce crosstalk between differential pairs in high-speed connectors, a shielding shell is often set inside the outer shell. The shielding shell is provided with a shielding cavity for accommodating the differential pairs. The differential pairs can obtain a fully enclosed shielding effect in the shielding cavity.

[0003] A Chinese invention patent application, published as CN118099863A, discloses an electrical connector comprising a terminal module and a shielding shell. The terminal module comprises an insulator, signal terminals fixed to the insulator, and a shielding sheet. The signal terminals are arranged longitudinally along the insulator, and the shielding sheets are disposed on both lateral sides of the insulator. The shielding shell has a plug-in cavity extending through it along the mating direction (i.e., the front-to-back direction). A shielding mesh is mounted at the front end of the shielding shell, electrically connected to the shielding shell. The shielding mesh has plug-in avoidance holes corresponding to the plug-in cavity. The shielding mesh has spring claws that extend into the plug-in cavity for inserting a grounding pin on a mating connector and are capable of contacting and conducting with the grounding pin. The shielding sheet has grounding spring arms that extend into the plug-in cavity for inserting a grounding pin on the mating connector and are capable of contacting and conducting with the grounding pin. The aforementioned structure ensures electrical continuity between the shielding sheet, the shielding shell, and the grounding pin on the mating connector during use, thereby improving shielding effectiveness.

[0004] In the above-mentioned electrical connector, since the spring arm on the shielding sheet needs to contact and conduct with the grounding pin on the mating connector, the corresponding plug-in cavity on the shielding shell needs to pass through along the mating direction. The end of the grounding pin can radiate electromagnetic waves outward. The radiated electromagnetic waves are easy to leak out from the rear port of the plug-in cavity, thereby affecting the transmission of differential signals and hindering the realization of signal transmission at 112Gbps, 224Gbps and higher rates. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a shielding shell to solve the technical problem in the prior art that the electromagnetic waves radiated from the grounding pins are easily leaked due to the penetrating arrangement of the receiving space, thereby affecting the higher-speed signal transmission of the differential pair.

[0006] Another object of the present invention is to provide a connector to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the technical solution of the ground shielding shell provided by the present invention is: A shielding shell includes a shielding body, a signal shielding cavity for accommodating signal terminals is provided on the shielding body along the front-to-back direction, and a grounding shielding groove for accommodating grounding pins or grounding shielding parts on the plug-in connector is also provided on the shielding body. The groove mouth of the grounding shielding groove is located at the front end face of the shielding body, and the groove 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 the grounding shielding part. The rear end of the shielding body is provided with a conductive connection structure for conducting with the grounding terminal and / or shielding sheet on the terminal module, and 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.

[0008] Furthermore, the grounding shielding groove is used to accommodate the grounding shielding parts on the plug-in 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 a C-shape that forms a semi-enclosed state for the corresponding signal shielding cavity or a U-shape that forms a fully enclosed state for the corresponding signal shielding cavity.

[0009] Furthermore, the ground shielding slot is used to accommodate the grounding pins on the plug-in connector, and the ground shielding slots and signal shielding cavities corresponding to the same terminal module are alternately arranged along the longitudinal direction of the terminal module.

[0010] Furthermore, a contact protrusion for contacting and conducting with a grounding pin or a grounding shielding member is provided on a slot side wall of the grounding shielding slot.

[0011] Furthermore, the conductive connection structure is a plug-in protrusion or a plug-in notch provided on the shielding body, and the plug-in protrusion or the plug-in notch on the shielding body is used to plug and match with the plug-in notch or the plug-in protrusion on the shielding sheet so that the two are connected to each other.

[0012] Furthermore, the rear end face of the shielding body is also integrally provided with a ridge extending longitudinally and used to separate the terminal modules, and the plug-in protrusions used to plug into the plug-in notches on the same shielding sheet are all integrally connected to the same ridge.

[0013] Furthermore, the conductive connection structure includes a plug-in piece or plug-in cylinder inserted at the rear end of the shielding body and connected to the shielding body. The plug-in piece or plug-in cylinder is used to plug and cooperate with the plug-in notch on the edge of the shielding piece to make the two conductive to each other.

[0014] The beneficial effect is that the shielding shell provided by the present invention is an improvement over the prior art. The grounding shielding slot in the present invention has a closed-bottom structure, thereby fully shielding the electromagnetic waves radiated from the grounding pins or the ends of the grounding shielding member on the plug-in connector, preventing the electromagnetic waves from leaking out of the shielding shell away from the plug-in end of the connector and affecting the high-speed transmission of differential signals. Furthermore, the shielding shell is electrically connected to the shielding sheet and / or grounding terminal in the terminal module, thereby ensuring signal return of the shielding shell and ensuring a good shielding effect of the shielding shell.

[0015] To achieve the above-mentioned purpose, the technical solution of the connector provided by the present invention is: A connector includes an insulating shell, a shielding shell and a terminal module. The shielding shell includes a shielding body. A signal shielding cavity for accommodating signal terminals is provided on the shielding body along the plug-in direction. The shielding body is also provided with a grounding shielding groove for accommodating a grounding pin or a grounding shielding member on the plug-in connector. The groove opening of the grounding shielding groove is located at the front end surface of the shielding body. The groove 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 the grounding shielding member. The rear end of the shielding body is provided with a conductive connection structure for conducting with the grounding terminal and / or shielding sheet on the terminal module, and 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.

[0016] Furthermore, the grounding shielding groove is used to accommodate the grounding shielding parts on the plug-in 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 a C-shape that forms a semi-enclosed state for the corresponding signal shielding cavity or a U-shape that forms a fully enclosed state for the corresponding signal shielding cavity.

[0017] Furthermore, the ground shielding slot is used to accommodate the grounding pins on the plug-in connector, and the ground shielding slots and signal shielding cavities corresponding to the same terminal module are alternately arranged along the longitudinal direction of the terminal module.

[0018] Furthermore, the connector also includes a shielding net installed on the front side of the shielding shell, the shielding net is in contact and conductive with the front side surface of the shielding shell, and a contact claw is provided on the shielding net. The contact claw is used to contact and conductive with the grounding pin or the grounding shielding member of the plug-in connector when the grounding pin or the grounding shielding member is inserted into the grounding shielding slot.

[0019] Furthermore, a contact protrusion for contacting and conducting with a grounding pin or a grounding shielding member is provided on a slot side wall of the grounding shielding slot.

[0020] 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 transverse direction. A plug-in protrusion is provided on one of the shielding plate and the shielding body, and a plug-in notch is provided on the other. When the plug-in notch is plugged into the plug-in protrusion, the shielding plate and the shielding shell are connected to each other. The plug-in protrusion or the plug-in notch at the rear end of the shielding shell constitutes the conductive connection structure.

[0021] Furthermore, the rear end face of the shielding body is also integrally provided with a ridge extending longitudinally and used to separate the terminal modules, and the plug-in protrusions used to plug into the plug-in notches on the same shielding sheet are all integrally connected to the same ridge.

[0022] Furthermore, the conductive connection structure includes a plug-in piece or a plug-in tube inserted at the rear end of the shielding body and connected to the shielding body. The terminal module includes an insulator, a signal terminal fixed on the insulator, and a shielding piece installed on at least one side of the insulator in the horizontal direction. The shielding piece is provided with 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 the plug-in tube, the shielding piece and the plug-in piece or the plug-in tube are connected to each other.

[0023] The beneficial effect is that the connector provided by the present invention is an improvement over the prior art. The ground shielding slot in the present invention has a closed-bottom structure, thereby fully shielding the electromagnetic waves radiated from the ground pins or the ends of the ground shielding member on the plug-in connector, preventing the electromagnetic waves from leaking out of the shielding shell away from the plug-in end of the connector and affecting the high-speed transmission of differential signals. In addition, the shielding shell is electrically connected to the shielding sheet and / or grounding terminal in the terminal module, thereby ensuring signal return of the shielding shell and ensuring a good shielding effect of the shielding shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the overall structure of the connector in Example 1 of the connector of the present invention; Figure 2 This is an exploded view of the connector in Example 1 of the connector of the present invention; Figure 3 is a cross-sectional view of the connector in Example 1 of the connector of the present invention; Figure 4 for Figure 3 A partial schematic diagram of the middle part; Figure 5 Schematic diagram of the conductive connection structure of the connector in Example 1 of the present invention; Figure 6 A partial cross-sectional view of the shielding shell in embodiment 1 of the connector of the present invention; Figure 7 This is a schematic diagram of the partial structure of the end face of the shielding shell close to the plugging end of the connector in Example 1 of the connector of the present invention; Figure 8 Schematic diagram of the structure of the shielding net in Example 1 of the connector of the present invention; Figure 9 is a cross-sectional view of a connector in embodiment 2 of the connector of the present invention; Figure 10 for Figure 9 Partial schematic diagram of point B in the middle; Figure 11 Schematic diagram of the structure of the shielding shell in Example 2 of the connector of the present invention; Figure 12 A partial cross-sectional view of a shielding shell in embodiment 2 of the connector of the present invention; Figure 13 Schematic diagram of the structure of the shielding shell in Example 3 of the connector of the present invention; Figure 14 A crosstalk comparison curve diagram of the shielding shell provided by the present invention and the conventional shielding shell.

[0025] Description of reference numerals: 1. Insulating shell; 2. Shielding shell; 21. Shielding body; 22. Signal shielding cavity; 23. Grounding shielding slot; 24. Plug-in protrusion; 241. Insertion part; 242. Limiting part; 25. Raised ridge; 3. Terminal module; 31. Insulator; 32. Signal terminal; 33. Shielding sheet; 331. Plug-in notch; 4. Plug-in connector; 41. Grounding pin; 42. Grounding shielding member; 43. Signal pin; 5. Plug-in sleeve; 6. Shielding net; 61. Contact claw. DETAILED DESCRIPTION

[0026] The present invention is described in further detail below with reference to the examples.

[0027] In order to solve the problems in the prior art, the basic concept of the present invention is to set the grounding shielding slot used to accommodate the grounding pin or the grounding shielding member into a structure with a closed slot bottom, thereby preventing the electromagnetic waves radiated by the grounding pin or the grounding shielding member from leaking and affecting the high-speed transmission of the differential signal.

[0028] Specific embodiment 1 of the connector provided by the present invention: See attached Figure 1 and attached Figure 2 The end of the connector used to mate with the plug-in connector 4 is its front end. The connector includes an insulating shell 1, a shielding shell 2 and a plurality of 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. The assembly connection relationship between the insulating shell 1, the shielding shell 2 and the terminal modules 3 is the existing technology and will not be repeated.

[0029] See attached Figure 3 and attached Figure 4 The terminal module 3 includes an insulator 31, signal terminals 32 fixed on the insulator 31 and arranged along the longitudinal direction, and shielding sheets 33 installed on both sides of the insulator 31. A pair of signal terminals 32 for transmitting differential signals constitutes a differential pair.

[0030] See attached Figure 5 , Attachment Figure 6 and attached Figure 7 The shielding shell 2 in this embodiment is a metal part processed by the MIM process. In other embodiments, the shielding shell 2 can also be a conductive plastic part or formed by providing a conductive layer on the surface of an insulating plastic part.

[0031] The shielding shell 2 includes a shielding body 21, which is provided with a signal shielding cavity 22 and a ground shielding slot 23. The number of signal shielding cavities 22 and ground shielding slots 23 is equal and corresponds to each other. The signal shielding cavity 22 is a through hole that extends through the shielding body 21 along the insertion direction, that is, the front-to-back direction. During assembly, the differential pairs pass through the signal shielding cavity 22 and extend into the corresponding openings in the insulating shell 1. The differential pairs maintain a certain insulation distance from the side walls of the signal shielding cavity 22, and the side walls of the signal shielding cavity 22 form a fully enclosing shield for the differential pairs.

[0032] The opening of the ground shielding slot 23 is located at the front end of the shield body 21, and the bottom of the ground shielding slot 23 is a closed structure. In this embodiment, the plug-in connector 4 is provided with signal pins 43 for mating with signal terminals 32, and a ground shield 42 for shielding the signal pins 43. One end of the ground shield 42 is designed to be inserted into the corresponding ground shielding slot 23, and the other end is provided with a fisheye for crimping with the printed circuit board.

[0033] The shape of the ground shielding slot 23 matches the shape of the ground shield 42. Specifically, the ground shielding slot 23 in this embodiment includes a C-shaped ground shielding slot 23 that can partially surround the corresponding signal shielding cavity 22 and can accommodate the C-shaped ground shield 42. The ground shielding slot 23 in this embodiment also includes a U-shaped ground shielding slot 23 that can fully surround the corresponding signal shielding cavity 22 and can accommodate the U-shaped ground shield 42. It can also accommodate the C-shaped ground shield 42 and a flat ground shield 42 that closes one side of the C-shaped ground shield 42. The different shapes of the ground shielding slot 23 are arranged according to the layout of the ground shield 42 and will not be further described.

[0034] The connector also includes a shielding net 6, see attached Figure 4, the shielding net 6 is installed at the front end of the shielding shell 2, specifically, the shielding net 6 is sandwiched between the shielding shell 2 and the insulating shell 1, and the shielding net 6 is in contact with the shielding shell 2. Figure 8 The shielding net 6 is provided with openings at positions corresponding to each signal shielding cavity 22 and ground shielding slot 23 for the signal pins 43 and ground shield 42 on the plug connector 4 to pass through. The shielding net 6 is provided with contact claws 61 at positions corresponding to each ground shielding slot 23. The contact claws 61 can contact and conduct with the ground shield 42 on the plug connector 4 when the ground shield 42 on the plug connector 4 is inserted into the ground shielding slot 23. In this way, the ground shield 42, the shielding net 6, and the shielding shell 2 are connected to the same ground.

[0035] In this embodiment, the inner wall of the grounding shielding slot 23 maintains a certain distance from the grounding shielding part 42, and the inner wall of the grounding shielding slot 23 and the grounding shielding part 42 are in a non-contact state, which can reduce the resistance of the grounding shielding part 42 inserted into the grounding shielding slot 23 and reduce the difficulty of plugging the connector.

[0036] The rear end of the shield body 21 is also provided with a conductive connection structure for conducting electricity with the shielding sheet 33. This conductive connection structure is a metal plug-in sleeve 5 that is inserted into the shield body 21 and is in contact with the shield body 21. Each signal shielding cavity 22 is correspondingly provided with a plug-in sleeve 5. During assembly, the front end of the signal terminal 32 passes through the corresponding plug-in sleeve 5.

[0037] A plurality of pairs of plug-in notches 331 are provided on the edge of one side of the shielding shell 2. Each pair of plug-in notches 331 is plugged into and matched with the opposite side walls of a plug-in tube 5. After the plug-in notches 331 are plugged into and matched with the plug-in tube 5, the shielding sheet 33, the plug-in tube 5 and the shielding shell 2 are mutually conductive.

[0038] In other embodiments, the conductive connection structure may also be a plug-in plate inserted into the shielding body. The plug-in plate is a metal plate and is in contact and conductive with the shielding body. The plug-in plate is positioned between adjacent signal shielding cavities and is arranged perpendicular to the shielding plate. The rear end of the plug-in plate engages with the plug-in notch in the shielding plate to provide electrical continuity among the plug-in plate, the shielding plate, and the shielding shell.

[0039] In this embodiment, a grounding terminal can be provided in the terminal module 3. The grounding terminal and the differential pairs are arranged alternately along the arrangement direction. The grounding terminal is provided with multiple sockets along its extension direction. The shielding sheet 33 is provided with plugs extending in the transverse direction and interferingly plugged into the corresponding sockets, so that the grounding terminal and the shielding sheet 33 are connected to the same ground. In other implementations of this embodiment, the grounding terminal can be omitted as needed, and the shielding sheet 33 can be provided with fisheyes for crimping with the printed circuit board.

[0040] Since the bottom of the ground shielding slot 23 is a closed structure, it can form a good surrounding and shielding effect on the end of the ground shield 42. The electromagnetic waves radiated by the ground shield 42 cannot leak out backward, reducing the electromagnetic interference received by the signal terminal 32 in the connector. The electromagnetic waves radiated by the ground shield 42 are shielded by the shield body 21, thereby forming a return flow in the shield body 21. The return flow path is as follows: Figure 4 As shown by the arrow in .

[0041] See attached Figure 14 Compared with the conventional shielding shell 2, the crosstalk effect optimization is significantly improved after applying the shielding shell 2 provided by the present invention, and the crosstalk optimization in the high-frequency area (30GHz-37GHz) can reach about 10dB. The red line in the figure represents the crosstalk level after applying the shielding shell 2 provided by the present invention, and the blue line represents the crosstalk level after applying the conventional shielding shell 2.

[0042] Specific embodiment 2 of the connector provided by the present invention: This embodiment is based on embodiment 1, and the difference from embodiment 1 is that, see attached Figure 9 , Attachment Figure 10 , Attachment Figure 11 and attached Figure 12 In this embodiment, the grounding shielding member 42 is no longer provided on the plug connector 4, but grounding pins 41 are provided, and the grounding pins 41 and the signal pins 43 are arranged alternately.

[0043] In this embodiment, the cross-section of the ground shielding slot 23 perpendicular to the plugging direction is rectangular, and the ground shielding slots 23 and the signal shielding cavities 22 corresponding to the same terminal module 3 are arranged alternately.

[0044] During the plugging process, the signal pin 43 on the plug connector 4 enters the signal shielding cavity 22 and plugs into the signal terminal 32, and the grounding pin 41 on the plug connector 4 enters the grounding shielding groove 23 and maintains a certain distance from the inner wall of the grounding shielding groove 23. The grounding shielding groove 23 in this embodiment 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 backflow in the shielding body 21. The backflow path is as follows: Figure 11 As shown by the arrow in .

[0045] The connection method between the shielding shell 2 and the shielding sheet 33 in this embodiment is the same as that in the first embodiment, and will not be described in detail.

[0046] Specific embodiment 3 of the connector provided by the present invention: This embodiment is based on the first embodiment, but the conductive connection structure in this embodiment is different from that in the first embodiment.

[0047] See attached Figure 13 The conductive connection structure in this embodiment specifically comprises a plug-in protrusion 24 that protrudes from the rear end surface of the shielding body 21 and is integrally formed with the shielding body 21. A plurality of plug-in notches 331 are defined on the shielding sheet 33, on one edge of the shielding shell 2. Each plug-in notch 331 engages with a plug-in protrusion 24. After the plug-in notches 331 and the plug-in protrusion 24 engage, the shielding sheet 33 and the shielding shell 2 are interconnected and electrically conductive. In this embodiment, each terminal module 3 is provided with two shielding sheets 33. Therefore, the plug-in protrusions 24 are also provided in two rows, with the plug-in protrusions 24 in each row 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 alternate with the differential pairs in the corresponding terminal module 3 along their respective arrangement directions.

[0048] The plug-in 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 protrusions that can be forcefully engaged with the insertion portion 241. The insertion portion 241 has two lateral limiting portions 242, each of which has a greater longitudinal width than the insertion portion 241. After the plug-in protrusion 24 is inserted into the insertion notch 331, the limiting portions 242 on either side of the insertion portion 241 are located on either side of the thickness of the shielding sheet 33. The wider limiting portions 242 and narrower insertion portion 241 enable the two limiting portions 242 to limit the lateral position of the shielding sheet 33 on either side of the thickness of the shielding sheet 33.

[0049] The rear end surface of the shielding body 21 is also integrally provided with a longitudinally extending ridge 25 that separates the terminal modules 3. The insertion protrusions 24 that engage with the insertion notches 331 on the same shielding sheet 33 are all integrally connected to the same ridge 25. The ridge 25 connects the multiple insertion protrusions 24 together, strengthening the structure of each insertion protrusion 24 and increasing the service life of the shielding shell 2.

[0050] In this embodiment, the ridge 25 located between two adjacent terminal modules 3 is connected to two plug-in protrusions 24 on both sides of the ridge 25. The plug-in protrusions 24 on both sides of the ridge 25 respectively mate with two adjacent shielding sheets 33 on the two adjacent terminal modules 3. The plug-in protrusions 24 connected to the two lateral sides of the ridge 25 are arranged symmetrically. In other embodiments, the plug-in protrusions 24 on both sides of the ridge 25 can also be arranged asymmetrically according to the mating requirements.

[0051] In other embodiments, the insertion notch may be provided on the rear end of the shielding shell, while the insertion protrusion may be provided 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, thereby achieving connection and conduction between the shielding sheet and the shielding shell.

[0052] Specific embodiment 4 of the connector provided by the present invention: This embodiment is based on Example 1 and differs from Example 1 in that the plug-in structure on the shielding shell in this embodiment is specifically a slot. The shielding sheet is provided with a finger on the edge of the shielding sheet facing the shielding shell, which is capable of being inserted into the slot. The finger and the slot are rigidly engaged. In this embodiment, the engagement of the finger and the slot also enables interconnection and electrical conduction between the shielding sheet and the shielding shell.

[0053] Specific embodiment 5 of the connector provided by the present invention: This embodiment is based on Example 1, and differs from Example 1 in that, in addition to the plug-in protrusions for plugging into the plug-in notches on the shielding sheet, the plug-in structure in this embodiment also includes a slot provided on the shielding body, and the terminal module also includes a grounding terminal fixed on the insulator, the end of the grounding terminal facing the plug-in end is exposed from the insulator and forms an insertion finger that can be inserted into the slot. After the insertion finger is inserted into the slot, the shielding shell and the grounding terminal can be connected to each other and conduct electricity.

[0054] This embodiment allows the shielding shell, the shielding sheet, and the signal terminal to be connected to a common ground, further shortening the signal return path and enhancing the shielding effect.

[0055] Specific embodiment 6 of the connector provided by the present invention: This embodiment is based on Example 1, and differs from Example 1 in that the plug-in structure on the shielding shell in this embodiment is specifically a slot, and the terminal module further includes a grounding terminal fixed to the insulator. The end of the grounding terminal facing the plugging end is exposed from the insulator and forms an insertion finger that can be inserted into the slot. When the insertion finger is inserted into the slot, the shielding shell and the grounding terminal are connected to each other and conductive. The grounding terminal is provided with a socket, and the shielding sheet is provided with a tab that is inserted into the socket with interference fit, so that the grounding terminal and the shielding sheet are conductively connected to each other.

[0056] The shielding sheet may not be directly connected to the shielding shell, but may be connected to the shielding shell through the grounding terminal, which can also achieve a good shielding effect.

[0057] Specific embodiment 7 of the connector provided by the present invention: This embodiment is based on the embodiment 1, and differs from the embodiment 1 in that the plugging protrusions in this embodiment are of equal width, and therefore there is no limiting portion on the plugging protrusions for limiting the shielding sheet.

[0058] Specific embodiment 8 of the connector provided by the present invention: This embodiment is based on the embodiment 1, and differs from the embodiment 1 in that no ridges are provided on the shielding body in this embodiment, and the various plug-in protrusions are arranged independently of each other.

[0059] Specific embodiment 9 of the connector provided by the present invention: This embodiment is based on embodiment 1, and differs from embodiment 1 in that a shielding net is not provided in this embodiment. Instead, a convex structure is provided on the inner wall of the grounding shielding slot. After the grounding pin on the connector is inserted into the grounding shielding slot, the convex structure contacts the grounding pin and is conductively connected to the grounding pin.

[0060] Specific embodiments of the shielding shell provided by the present invention: The shielding shell is a grounding shielding shell in a specific embodiment of the connector, and will not be described in detail.

[0061] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A shielding shell, comprising a shielding body (21), wherein a signal shielding cavity (22) for accommodating a signal terminal is provided through the shielding body (21) in a front-to-back direction, wherein: The shielding body (21) is further provided with a grounding shielding slot (23) for accommodating a grounding pin or a grounding shielding member on the plug-in connector, the slot opening of the grounding shielding slot (23) is located at the front end surface of the shielding body (21), the slot bottom of the grounding shielding slot (23) is a closed structure, the shape of the grounding shielding slot (23) can match the shape of the grounding pin or the grounding shielding member, and the rear end of the shielding body (21) is provided with a conductive connection structure for conducting with the grounding terminal and / or the shielding sheet on the terminal module (3), and the conductive connection structures corresponding to the same terminal module (3) are arranged in at least one row along the longitudinal direction of the terminal module (3).

2. The shielding case according to claim 1, wherein: The grounding shielding slots (23) are used to accommodate grounding shielding members on the plug-in connector. The number of the grounding shielding slots (23) is equal to the number of the signal shielding cavities (22) and corresponds one to one. The shape of the grounding shielding slots (23) is a C-shape that forms a semi-enclosed state for the corresponding signal shielding cavity (22) or a U-shape that forms a fully enclosed state for the corresponding signal shielding cavity (22).

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

4. The shielding shell according to any one of claims 1 to 3, wherein: A contact protrusion for contacting and conducting with a grounding pin or a grounding shielding piece is provided on a groove side wall of the grounding shielding groove (23).

5. The shielding shell according to any one of claims 1 to 3, wherein: The conductive connection structure is a plug-in protrusion (24) or a plug-in notch (331) provided on the shielding body (21); the plug-in protrusion (24) or the plug-in notch (331) on the shielding body (21) is used to plug and match with the plug-in notch (331) or the plug-in protrusion (24) on the shielding sheet (33) so that the two are connected to each other.

6. The shielding case according to claim 5, wherein: A ridge (25) extending longitudinally and used to separate the terminal modules (3) is also integrally provided on the rear end face of the shielding body (21), and the plug-in protrusions (24) for plugging into and mating with the plug-in notches (331) on the same shielding sheet (33) are integrally connected to the same ridge (25).

7. The shielding shell according to any one of claims 1 to 3, wherein: The conductive connection structure comprises a plug-in piece or plug-in cylinder (5) inserted at the rear end of the shielding body (21) and conductively connected to the shielding body (21); the plug-in piece or plug-in cylinder (5) is used to plug and match with the plug-in notch (331) at the edge of the shielding piece (33) so that the two are conductively 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 a signal terminal is provided on the shielding body (21) along the insertion direction, wherein: The shielding body (21) is further provided with a grounding shielding slot (23) for accommodating a grounding pin or a grounding shielding member on the plug-in connector, the slot opening of the grounding shielding slot (23) is located at the front end surface of the shielding body (21), the slot bottom of the grounding shielding slot (23) is a closed structure, the shape of the grounding shielding slot (23) can match the shape of the grounding pin or the grounding shielding member, and the rear end of the shielding body (21) is provided with a conductive connection structure for conducting with the grounding terminal and / or the shielding sheet on the terminal module (3), and the conductive connection structures corresponding to the same terminal module (3) are arranged in at least one row along the longitudinal direction of the terminal module (3).

9. The connector according to claim 8, wherein: The grounding shielding slots (23) are used to accommodate grounding shielding members on the plug-in connector. The number of the grounding shielding slots (23) is equal to the number of the signal shielding cavities (22) and corresponds one to one. The shape of the grounding shielding slots (23) is a C-shape that forms a semi-enclosed state for the corresponding signal shielding cavity (22) or a U-shape that forms a fully enclosed state for the corresponding signal shielding cavity (22).

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

11. The connector according to any one of claims 8 to 10, wherein: The connector further comprises a shielding net mounted on the front side of the shielding shell (2), the shielding net being in contact and conduction with the front side surface of the shielding shell (2), and a contact spring claw being provided on the shielding net, the contact spring claw being used for contacting and conducting with the grounding pin or the grounding shielding member of the mating connector when the grounding pin or the grounding shielding member is inserted into the grounding shielding slot.

12. The connector according to any one of claims 8 to 10, wherein: A contact protrusion for contacting and conducting with a grounding pin or a grounding shielding piece is provided on a groove side wall of the grounding shielding groove (23).

13. The connector according to any one of claims 8 to 10, wherein: The terminal module (3) comprises an insulator (31), a signal terminal (32) fixed on the insulator, and a shielding sheet (33) installed on at least one side of the insulator in a lateral direction. A plug-in protrusion (24) is provided on one of the shielding sheet (33) and the shielding body (21), and a plug-in notch (331) is provided on the other. After the plug-in notch (331) and the plug-in protrusion (24) are plugged in and matched, the shielding sheet (33) and the shielding shell (2) are mutually conductive. The plug-in protrusion (24) or the plug-in notch (331) at the rear end of the shielding shell (2) constitutes the conductive connection structure.

14. The connector according to claim 13, wherein: A ridge (25) extending longitudinally and used to separate the terminal modules (3) is also integrally provided on the rear end face of the shielding body (21), and the plug-in protrusions (24) for plugging into and mating with the plug-in notches (331) on the same shielding sheet (33) are integrally connected to the same ridge (25).

15. The connector according to any one of claims 8 to 10, wherein: The conductive connection structure comprises a plug-in piece or a plug-in cylinder (5) inserted into the rear end of the shielding body (21) and connected to the shielding body (21); the terminal module (3) comprises an insulator (31), a signal terminal (32) fixed on the insulator (31), and a shielding piece (33) installed on at least one side of the insulator (31) in a lateral direction; the shielding piece (33) is provided with a plug-in notch (331) on one side edge facing the shielding shell (2); the plug-in notch (331) is plugged into the plug-in piece or the plug-in cylinder (5), so that the shielding piece (33) and the plug-in piece or the plug-in cylinder (5) are connected to each other.

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