Ground shield and connector

Abstract

The application provides a grounding shield and a connector, and belongs to the field of connecting devices. The grounding shield comprises a shielding main body, the shielding main body has a shielding cavity for accommodating and shielding a differential pair, and the shielding main body is provided with a grounding fish eye, a grounding spring claw and a grounding sheet at one end corresponding to a press-fitting end of the connector, the grounding fish eye is used for being press-fitted onto a printed board, the grounding spring claw is used for being in contact with a conductive contact surface on the printed board, and the grounding sheet is used for being inserted into a common ground hole on a conductive plate of the connector and being in contact with the conductive plate. The grounding sheet and the grounding spring claw are combined and arranged in close proximity in the same group. The connector comprises the above grounding shield. The application replaces part of the grounding fish eye with the grounding spring claw and the grounding sheet, and simplifies the structure of the grounding shield and the printed board without affecting the shielding effect.

Description

Technical Field

[0001] This invention belongs to the field of connection devices, and in particular relates to grounding shields and connectors. Background Technology

[0002] Differential pairs are commonly used in high-speed connectors to transmit differential signals. As the signal transmission rate increases, crosstalk between differential pairs worsens. Therefore, high-speed connectors often use grounding shields to surround the differential pairs in order to reduce crosstalk between them.

[0003] A Chinese invention patent application with publication number CN110098509A and publication date of August 6, 2019 discloses an electrical connector system. The electrical connector system includes paired signal terminals (i.e., signal contacts), a grounding shield (i.e., plug shield), and a housing. The housing includes an insulating front housing and a conductive rear housing. The differential pair and the grounding shield are both inserted into the front housing, and the grounding shield is in contact with the rear housing. Both the differential pair and the grounding shield are provided with fisheyes that pass through the housing and are used for pressing with a printed circuit board. The grounding shield is C-shaped and includes three side plates. Each side plate is provided with a grounding fisheye. The grounding fisheye on the grounding shield needs to be pressed with the printed circuit board to achieve grounding, and it can also provide shielding for the signal fisheyes on the signal terminals.

[0004] The printed circuit board (PCB) used to mount the aforementioned electrical connector system needs to have holes for the fisheyes, and the PCB also needs to be designed with traces that are conductively connected to the fisheyes at these holes. The aforementioned grounding shield has a large number of grounding fisheyes. On the one hand, each grounding fisheye needs to be aligned with its corresponding hole on the PCB, and the difficulty of positioning increases with the number of grounding fisheyes. On the other hand, a large number of grounding fisheyes also leads to a larger number of holes and traces on the PCB, resulting in a complex PCB structure, difficult trace arrangement, and consequently increased design and manufacturing costs.

[0005] The above problems can be avoided by directly reducing the number of grounding fisheyes on the grounding shield. However, grounding fisheyes also shield signal fisheyes. Therefore, directly reducing the number of grounding fisheyes on the grounding shield will lead to a decrease in the shielding effect of the differential pairs, increasing crosstalk between differential pairs and hindering high-speed signal transmission. In addition, directly reducing the number of grounding fisheyes on the grounding shield will result in no signal return path at the location where the grounding fisheyes are no longer present, thus lengthening the signal return path and increasing crosstalk between differential pairs. Summary of the Invention

[0006] The purpose of this invention is to provide a grounding shield to solve the technical problems in the prior art, such as the difficulty of pressing the grounding fisheyes on the grounding shield onto the printed circuit board and the complexity of the printed circuit board structure due to the large number of grounding fisheyes on the grounding shield.

[0007] Another objective of this invention is to provide a connector to solve the aforementioned technical problems.

[0008] To achieve the above objectives, the technical solution of the grounding shield provided by this invention is as follows:

[0009] A grounding shield includes a shielding body having a shielding cavity for accommodating and shielding differential pairs. One end of the shielding body, corresponding to the press-fit end of the connector, is provided with a grounding eye, a grounding spring claw, and a grounding plate. The grounding eye, grounding spring claw, and grounding plate are all capable of providing shielding between adjacent differential pairs. The grounding eye is press-fitted onto a printed circuit board. The grounding spring claw is used to make contact with a conductive contact surface on the printed circuit board. The grounding plate is inserted into a common ground hole on the conductive plate of the connector and is connected to the conductive plate. The grounding plate and grounding spring claw are arranged in combination, with the grounding plate and grounding spring claw in the same group arranged adjacent to each other.

[0010] As a further improvement, the shielding body has an inner protrusion at one end corresponding to the press-fit end of the connector, which protrudes inward toward the inner side of the shielding body. The grounding plate and the grounding spring claw are both connected to the inner protrusion. The end of the inner protrusion away from the grounding plate and the grounding spring claw forms a stepped surface for assembly positioning during the assembly of the grounding shield.

[0011] As a further improvement, the grounding spring claw includes a spring claw root, a bent connecting portion, and an elastic contact portion. The spring claw root is combined with the shielding body, and the bent connecting portion is located between the spring claw root and the elastic contact portion. The bent connecting portion is folded outward toward the grounding shield so that one side of the elastic contact portion in the thickness direction can contact the conductive contact surface.

[0012] As a further improvement, the direction perpendicular to the plane where the fold angle of the bending connection is located is the bending vertical direction, and the elastic contact part extends along the bending vertical direction.

[0013] As a further improvement, the shielding body includes a base plate and two side plates vertically connected to both sides of the base plate. The base plate and the two side plates form the shielding cavity. Grounding claws and grounding plates are provided on both side plates, and grounding fisheyes are provided on the base plate.

[0014] As a further improvement, the shielding body also includes a connecting plate integrally connected between the two side plates on the side edge away from the bottom plate, with the connecting plate located at the rear end of the side plates.

[0015] The beneficial effects are as follows: The grounding shield provided by this invention is an invention of element substitution. This grounding shield replaces some of the grounding fisheyes with grounding spring claws that can directly contact and conduct electricity with the conductive contact surface on the printed circuit board (PCB) and grounding plates that can conduct electricity with the conductive plate of the connector. Neither the grounding spring claws nor the grounding plates need to be pressed into the PCB, yet both can provide shielding. The combined arrangement of the grounding spring claws and grounding plates allows the grounding shield to conduct electricity with the PCB using the grounding spring claws and with the conductive plate using the grounding plates at the same location, shortening the return path and simplifying the connector structure while maintaining good shielding performance. This reduces the difficulty of positioning the grounding fisheyes during press-fitting, improving assembly efficiency. Furthermore, reducing the number of grounding fisheyes on the grounding shield allows for fewer holes on the PCB, simplifying the PCB structure and reducing manufacturing costs.

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

[0017] A connector includes an insulating shell and a conductive plate. A grounding shield is inserted into the insulating shell. The grounding shield includes a shielding body with a shielding cavity for accommodating and shielding differential pairs. One end of the shielding body corresponding to the press-fit end of the connector is provided with a grounding eye, a grounding spring claw, and a grounding plate. The grounding eye, grounding spring claw, and grounding plate are all used to provide shielding between adjacent differential pairs. The grounding eye is used for press-fitting onto a printed circuit board. The grounding spring claw is used for contacting and conducting with a conductive contact surface on the printed circuit board. The grounding plate is used for inserting into a common ground hole on the conductive plate of the connector and conducting with the conductive plate. The grounding plate and grounding spring claw are arranged in combination, and the grounding plate and grounding spring claw in the same group are arranged adjacent to each other.

[0018] As a further improvement, the shielding body has an inner protrusion at one end corresponding to the press-fit end of the connector, which protrudes inward toward the inner side of the shielding body. The grounding plate and the grounding spring claw are both connected to the inner protrusion. The end of the inner protrusion away from the grounding plate and the grounding spring claw forms a stepped surface for assembly positioning during the assembly of the grounding shield.

[0019] As a further improvement, the grounding spring claw includes a spring claw root, a bent connecting portion, and an elastic contact portion. The spring claw root is combined with the shielding body, and the bent connecting portion is located between the spring claw root and the elastic contact portion. The bent connecting portion is folded outward toward the grounding shield so that one side of the elastic contact portion in the thickness direction can contact the conductive contact surface.

[0020] As a further improvement, the direction perpendicular to the plane where the fold angle of the bending connection is located is the bending vertical direction, and the elastic contact part extends along the bending vertical direction.

[0021] As a further improvement, the shielding body includes a base plate and two side plates vertically connected to both sides of the base plate. The base plate and the two side plates form the shielding cavity. The ends of the two side plates corresponding to the press-fit end of the connector are provided with grounding claws and grounding plates. Grounding fisheyes are provided at the ends of the base plate corresponding to the press-fit end of the connector.

[0022] As a further improvement, the shielding body also includes a connecting plate integrally connected between the two side plates on the side edges away from the bottom plate. The connecting plate is located at the end of the side plate corresponding to the press-fit end of the connector. The insulating shell is provided with a through-hole for inserting the shielding component into the bottom plate and the side plate. The grounding shielding component is inserted into the insulating shell from back to front. The rear end face of the insulating shell is provided with a limiting groove for the connecting plate to be embedded. The bottom surface of the limiting groove is used to position the forward assembly of the grounding shielding component.

[0023] As a further improvement, an insulator is assembled or integrally injection molded inside the shielding cavity, and a differential pair is fixedly installed on the insulator. The insulator is located at one end of the shielding cavity that corresponds to the press-fit end of the connector. The insulating shell is provided with an integral mounting hole for the grounding shield and the insulator to be installed as a whole.

[0024] The beneficial effects are as follows: The connector provided by this invention is an improvement on the prior art. In this connector, the grounding shield replaces part of the grounding fisheye with grounding claws that can directly contact and conduct electricity with the conductive contact surface on the printed circuit board and grounding plates that can conduct electricity with the conductive plate of the connector. Neither the grounding claws nor the grounding plates need to be pressed into the printed circuit board, but both can play a shielding role. The combination of grounding claws and grounding plates allows the grounding shield to conduct electricity with the printed circuit board using the grounding claws and with the conductive plate using the grounding plates at the same location, shortening the return path and simplifying the connector structure while ensuring good shielding effect. This reduces the difficulty of positioning the grounding fisheyes during the press-fit process and improves assembly efficiency. In addition, with the reduction in the number of grounding fisheyes on the grounding shield, the corresponding number of holes on the printed circuit board can also be reduced, simplifying the structure of the printed circuit board and reducing the manufacturing cost of the printed circuit board. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the connector in Embodiment 1 of the connector of the present invention;

[0026] Figure 2 This is a partial structural schematic diagram of the connector in Embodiment 1 of the connector of the present invention;

[0027] Figure 3 This is a schematic diagram of the grounding shield in Embodiment 1 of the connector of the present invention;

[0028] Figure 4This is a structural schematic diagram from one side of the grounding shield in Embodiment 1 of the connector of the present invention;

[0029] Figure 5 This is a structural schematic diagram of the grounding shield from another perspective in Embodiment 1 of the connector of the present invention;

[0030] Figure 6 This is a top view of the grounding shield in Embodiment 1 of the connector of the present invention;

[0031] Figure 7 This is a front view of the grounding shield in Embodiment 1 of the connector of the present invention;

[0032] Figure 8 This is a side view of the grounding shield in Embodiment 1 of the connector of the present invention;

[0033] Figure 9 This is a schematic diagram of the insulating shell structure in Embodiment 1 of the connector of the present invention;

[0034] Figure 10 This is a partial structural schematic diagram of the insulating shell in Embodiment 1 of the connector of the present invention;

[0035] Figure 11 This is a schematic diagram of the conductive plate structure in Embodiment 1 of the connector of the present invention;

[0036] Figure 12 This is a schematic diagram of the overall structure of the connector in Embodiment 2 of the connector of the present invention;

[0037] Figure 13 This is a partial structural schematic diagram of the connector in Embodiment 2 of the connector of the present invention;

[0038] Figure 14 This is a schematic diagram of the insulating shell structure in Embodiment 2 of the connector of the present invention;

[0039] Figure 15 This is a partial structural diagram of the insulating shell in Embodiment 2 of the connector of the present invention;

[0040] Figure 16 This is an exploded view of Embodiment 2 of the connector of the present invention;

[0041] Figure 17 This is a schematic diagram of the structure of the grounding shield, signal terminal, and insulator in Embodiment 2 of the connector of the present invention;

[0042] Figure 18 This is a front view of the grounding shield, signal terminals, and insulator in Embodiment 2 of the connector of the present invention;

[0043] Figure 19This is a side view of the grounding shield, signal terminals, and insulator in Embodiment 2 of the connector of the present invention;

[0044] Figure 20 This is a schematic diagram of the grounding shield in Embodiment 3 of the connector of the present invention;

[0045] Figure 21 This is a schematic diagram of the grounding shield in Embodiment 3 of the connector of the present invention from another perspective;

[0046] Figure 22 This is a front view of the grounding shield in Embodiment 3 of the connector of the present invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Signal terminal; 11. Contact terminal; 12. Signal fisheye; 2. Housing; 21. Insulating shell; 211. Base; 212. Guide section; 213. Accommodation space; 214. Terminal mounting hole; 2141. Main hole section; 2142. Insertion groove; 2143. Bevel; 215. Shielding mounting hole; 216. Limiting groove; 217. Stop platform; 218. Positioning post; 219. Overall mounting hole; 2110. Mounting platform; 22. Conductive plate; 221. Alternating hole; 222. Fisheye grounding hole; 223. Plate grounding hole; 224. Spring claw hole; 225. Positioning hole; 23. Shielding mesh; 3. Grounding shielding component; 31. Shielding body; 311. Base plate; 312. Side plate; 313. Connecting plate; 314. Riveting seam; 315. Inner protrusion; 316. Stepped surface; 317. Protrusion; 318. Spring arm; 32. Grounding piece; 321. Protrusion; 33. Grounding fisheye; 331. Press-fit part; 332. Fisheye shoulder; 34. Grounding spring claw; 341. Spring claw root; 342. Bending connection part; 343. Turning connection part; 344. Elastic contact part; 4. Insulator; 41. Limiting step. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the embodiments.

[0050] Specific embodiment 1 of the connector provided by the present invention:

[0051] A connector, see appendix Figure 1 and attached Figure 2 It includes a housing 2, a signal terminal 1, and a grounding shield 3. One end of the connector is a mating end for mating with an adapter connector, and the other end is a pressing end for pressing onto a printed circuit board.

[0052] Signal terminals 1 are arranged in pairs, and the same pair of signal terminals 1 constitutes a differential pair. In this embodiment, the insertion and removal direction of the connector is taken as the front-back direction. The end of the connector that is inserted into the adapter connector is the front end, and the end used for mounting on the printed circuit board is the rear end. In this embodiment, two directions that are mutually perpendicular and both perpendicular to the insertion and removal direction of the connector are taken as the first direction and the second direction. The differential pairs are arranged in a matrix form in the first direction and the second direction, and the two signal terminals 1 in the same differential pair are arranged along the first direction. In this embodiment, the insertion and removal direction of the connector is also taken as the third direction.

[0053] One end of the signal terminal 1 is a contact end 11 for making contact with the signal contact of the adapter connector to transmit signals. The other end of the signal terminal 1 is provided with a signal fisheye 12. The signal terminal 1 can be press-fitted onto the printed circuit board through the signal fisheye 12.

[0054] Each differential pair is equipped with a grounding shield 3, see Appendix Figure 3 and in conjunction with the appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 and attached Figure 8 The grounding shield 3 includes a shielding body 31, a grounding eyelet 33, a grounding plate 32, and a grounding spring claw 34. The shielding body 31 includes a base plate 311 and side plates 312 respectively perpendicularly disposed on both sides of the base plate 311. The base plate 311 and the two side plates 312 are C-shaped when cut by a plane perpendicular to the insertion / removal direction. The grounding eyelet 33, the grounding plate 32, and the grounding spring claw 34 are all disposed at the end of the shielding body 31 corresponding to the pressing end. Specifically, the base plate 311 is provided with two grounding eyelets 33, and each side plate 312 is provided with a grounding plate 32 and a grounding spring claw 34.

[0055] See appendix Figure 9 and attached Figure 10 The outer shell 2 includes an insulating shell 21, which includes a base 211 and guide portions 212 vertically disposed on both sides of the base 211. The space enclosed by the guide portions 212 and the base 211 is a receiving space 213 for inserting the adapter connector. The guide portions 212 are used to guide the adapter connector during the insertion process. The base 211 of the insulating shell 21 is provided with terminal mounting holes 214 for inserting signal terminals 1 and shield mounting holes 215 for inserting grounding shields 3.

[0056] After the signal terminal 1 is inserted into the terminal mounting hole 214, it fits tightly against the hole wall, thus fixing the signal terminal 1 relative to the insulating shell 21. Simultaneously, the contact end 11 of the signal terminal 1 is located within the receiving space 213. The signal fisheye 12 on the signal terminal 1 extends from one end of the insulating shell 21 corresponding to the press-fit end, protruding from the base 211 of the insulating shell 21 for press-fitting with the printed circuit board. The terminal mounting hole 214 includes a main hole portion 2141 and a insertion groove 2142. The insertion groove 2142 is located on opposite side walls of the main hole portion 2141. A bevel 2143 is provided between the groove opening of the insertion groove 2142 and the side wall of the main hole portion 2141. After the portion of the signal terminal 1 adjacent to the signal fisheye 12 is inserted into the insertion groove 2142, it fits tightly against the groove wall.

[0057] After the shielding body 31 of the grounding shield 3 is inserted into the shielding mounting hole 215, it fits tightly against the hole wall of the shielding mounting hole 215, thereby fixing the grounding shield 3 relative to the insulating shell 21. The end of the shielding body 31 connected to the grounding fisheye 33 is located in the shielding mounting hole 215, and the end of the shielding body 31 away from the grounding fisheye 33 is located in the receiving space 213. The grounding fisheye 33 and the grounding plate 32 both extend from the base 211 of the insulating shell 21 from the corresponding press-fit end of the insulating shell 21.

[0058] See appendix Figure 2 The centers of the two grounding plates 32 and the corresponding two signal fisheyes 12 on the grounding shield 3 are aligned on the same straight line, and the distances between the two grounding plates 32 and their adjacent signal fisheyes 12 are equal. During use, the grounding plates 32 and the side fisheyes provide shielding in the first direction, preventing crosstalk between differential pairs arranged in the first direction. The two grounding fisheyes 33 on the base plate 311 are aligned with the corresponding two signal fisheyes 12 in the second direction, thus providing shielding between differential pairs arranged in the second direction. The height of the grounding plate 32 is less than the height of the grounding fisheye 33, and the grounding plate 32 is not press-fitted to the printed circuit board.

[0059] See appendix Figure 3 The grounding claw 34 is located on one side of the grounding piece 32 on the same side plate 312. The grounding claw 34 includes a claw root 341, a bent connecting part 342, a turning connecting part 343, and an elastic contact part 344 connected in sequence. The claw root 341 is directly connected to the corresponding side plate 312. The bent connecting part 342 is bent so that the thickness direction of the turning connecting part 343 is perpendicular to the third direction. The elastic contact part 344 extends out of one end of the turning connecting part 343 in the second direction. After the connection of the bent connecting part 342 and the turning connecting part 343, the elastic contact part 344 is located outside the grounding piece 32 on the same side plate 312 and is aligned with the grounding piece 32 in the first direction.

[0060] The end of the elastic contact portion 344 away from the turning connection portion 343 is inclined away from the shielding body 31 and protrudes from the grounding piece 32 in that direction. After the connector is pressed onto the printed circuit board, the grounding fisheye 33 is pressed into place with the corresponding hole on the printed circuit board, the grounding piece 32 does not contact the printed circuit board, the elastic contact portion 344 of the grounding claw 34 abuts against and conducts electricity with the conductive contact surface on the printed circuit board, and the elastic contact portion 344 can undergo a certain amount of elastic deformation under the action of the clamping force, so that the elastic contact portion 344 and the conductive contact surface on the printed circuit board maintain a tight contact.

[0061] Compared to existing technologies that use a large number of grounding fisheyes 33, this connector reduces the number of grounding fisheyes 33 that the grounding shield 3 needs to press onto the printed circuit board, thus lowering the positioning difficulty during the pressing process. Furthermore, the printed circuit board does not need to have pre-drilled holes for pressing or routing traces at the corresponding positions of the grounding piece 32, resulting in a simpler printed circuit board structure and reduced design and manufacturing difficulty and cost. Moreover, compared to existing technologies that directly reduce the number of grounding fisheyes 33, the grounding piece 32 and grounding claw 34 in this invention can still provide shielding between adjacent differential pairs, enabling high-speed signal transmission.

[0062] Furthermore, since the grounding spring claw 34 can directly contact and conduct electricity with the conductive contact surface on the printed circuit board, although the grounding fisheye 33 is lost on the corresponding side plate 312, the return current path at the corresponding position does not become longer, thus ensuring less crosstalk between the differential pairs. Moreover, the cooperation between the grounding plate 32 and the grounding spring claw 34 can increase the shielding structure between two adjacent differential pairs in the first direction, thereby further enhancing the shielding effect. Additionally, since the elastic contact portion 344 of the grounding spring claw 34 can make seamless contact with the conductive contact surface on the printed circuit board, even if there is a gap between the grounding plate 32 and the printed circuit board, electromagnetic leakage will not occur, thus preventing a deterioration in the shielding effect.

[0063] In this embodiment, the differential pairs are sparsely arranged in the first direction and densely arranged in the second direction. Therefore, the signal fisheyes 12 of two adjacent differential pairs in the second direction can share the front fisheye between the two differential pairs. However, the signal fisheyes 12 of two adjacent differential pairs in the first direction cannot share the grounding plate 32 and the grounding spring claw 34. The reason is that if the grounding plate 32 and the grounding spring claw 34 between the two differential pairs are shared, the distance from the grounding plate 32 and the grounding spring claw 34 to at least one signal fisheye 12 of the differential pair will be large, which will be difficult to meet the shielding requirements. Therefore, in one embodiment of this embodiment, grounding plates 32 and grounding spring claws 34 are provided on both side plates 312.

[0064] However, in other embodiments, depending on the arrangement and layout of the differential pairs, a grounding plate 32 and a grounding spring claw 34 may be provided on only one side plate 312, while the other side plate 312 may be left empty or have a grounding fisheye 33 provided, or a grounding plate 32 may be provided on one side plate 312 and a grounding spring claw 34 may be provided on the other side plate 312.

[0065] In this embodiment, see Appendix Figure 3 The shielding body 31 also includes a connecting plate 313, which connects the two side plates 312 between their ends away from the base plate 311 in the second direction. The connecting plate 313 is located at the end of the side plate 312 corresponding to the press-fit end. The connecting plate 313 enables the end of the shielding body 31 corresponding to the press-fit end to form a rectangular ring structure, enhancing the structural strength of the shielding body 31 and preventing deformation of the shielding body 31 during assembly. The shielding body 31 is integrally processed from metal sheet through processes such as cutting, stamping, and bending. The shielding body 31 has a riveting seam 314 that forms a ring, and the riveting seam 314 is located at the center of the base plate 311 in the first direction.

[0066] The outer casing 2 also includes a conductive plate 22, see Appendix Figure 1 and in conjunction with the appendix Figure 11 The conductive plate 22 is installed on the side of the base 211 of the insulating shell 21 away from the receiving space 213. Positioning holes 225 are provided on both sides of the conductive plate 22. Positioning posts 218 are provided at corresponding positions on the insulating shell 21 for inserting into the positioning holes 225. The cooperation between the positioning holes 225 and the positioning posts 218 improves the ease of assembly. Furthermore, after assembly, the conductive plate 22 can be fixed to the insulating shell 21 by heat riveting the ends of the positioning posts 218. The positioning holes 225 on the conductive plate 22 are located on the protruding portions on both sides of the main body of the conductive plate 22. The insulating shell 21 has grooves on it that accommodate the conductive plate 22 and are adapted to its shape. The grooves and the protruding portions of the conductive plate 22 can form an interlaced structure, thereby improving the ease of positioning and the connection strength. The conductive plate 22 is provided with a clearance hole 221 for avoiding the signal fisheye 12. The conductive plate 22 is also provided with a fisheye common ground hole 222 for the grounding fisheye 33 to pass through, a plate common ground hole 223 for the grounding plate 32 to pass through, and a spring claw hole 224 for accommodating the grounding spring claw 34.

[0067] See appendix Figure 3The grounding fisheye 33 includes a pressing portion 331 for insertion into a hole in the printed circuit board and a fisheye shoulder 332 for insertion into a corresponding fisheye common ground hole 222. The fisheye shoulder 332 is interference-fitted with the hole wall of the corresponding fisheye common ground hole 222, thereby enabling the grounding fisheye 33 to make contact and conduct with the conductive plate 22. The grounding piece 32 is also interference-fitted with the hole wall of the corresponding piece common ground hole 223, and both ends of the grounding piece 32 in the second direction are provided with arc-shaped protrusions 321 to facilitate the assembly of the grounding piece 32 with the corresponding piece common ground hole 223. The end of the grounding piece 32 away from the shielding body 31 does not protrude from the conductive plate 22, avoiding gaps between the conductive plate 22 and the printed circuit board when the connector is pressed onto the printed circuit board.

[0068] The shape of the spring claw hole 224 is adapted to the shape of the grounding spring claw 34, but the wall of the grounding hole does not contact the grounding spring claw 34 to ensure that the grounding spring claw 34 can undergo elastic deformation smoothly. The end of the elastic contact portion 344 of the grounding spring claw 34 away from the turning connection portion 343 protrudes from the conductive plate 22 to ensure that this end can contact and abut against the conductive contact surface on the printed circuit board.

[0069] The conductive plate 22 enables all grounding fisheyes 33 and grounding plates 32 to be grounded and conduction, and also provides all-round shielding, which helps to further enhance the shielding effect.

[0070] During the assembly of this connector, the signal terminals 1 are assembled first, followed by the grounding shield 3, and then the conductive plate 22. When assembling the grounding shield 3, it is inserted into the insulating shell 21 from the press-fit end towards the mating end. The shielding body 31 has an inner protrusion 315 at one end corresponding to the press-fit end, forming a stepped surface 316 on the shielding body 31 facing the mating end. The insulating shell 21 has a stop 217 that mates with the stepped surface 316, so that the stop 217 can cooperate with the stepped surface 316 to provide a stopping and limiting function during assembly. In this embodiment, the shielding body 31 has an inner protrusion 315 located at the position where the grounding plate 32 and grounding spring claw 34 are located on the side plate 312. The inner protrusion 315 protrudes inwards from the side plate 312, forming a stepped surface 316 on the inner surface of the side plate 312.

[0071] The shielding mounting hole 215 is C-shaped. During the assembly process, the bottom plate 311 and side plate 312 of the shielding body 31 pass through the shielding mounting hole 215. A limiting groove 216 is provided on the side of the base 211 of the insulating shell away from the receiving space 213. The limiting groove 216 is connected between the two ends of the shielding mounting hole 215. During the assembly process, the connecting plate 313 of the shielding body 31 is inserted into the limiting groove 216 and is stopped and limited by the bottom wall of the limiting groove 216.

[0072] See appendix Figure 1 and attached Figure 2 The outer casing 2 also includes a conductive shielding mesh 23, which is a conductor or plastic coated or electroplated with a conductive layer. The shielding mesh 23 is disposed within the receiving space 213 and is attached to the base 211 of the insulating shell 21. The shielding mesh 23 has shielding holes through which grounding shielding components 3 pass, and the grounding shielding components 3 are in close contact with the corresponding shielding holes via protrusions 317 on their sides. The shielding mesh 23 allows all grounding shielding components 3 to share a common ground and provides omnidirectional shielding, improving the shielding effect between differential pairs.

[0073] In other embodiments, one of the grounding fisheyes 33 on the base plate 311 can be replaced with a grounding plate 32 or a grounding spring claw 34, while the other grounding fisheye 33 is still retained. This can further reduce the number of grounding fisheyes 33 on the grounding shield 3, while also using the grounding fisheye 33 to provide a holding force for the grounding shield 3.

[0074] In other embodiments, the two signal terminals 1 in the same differential pair can also be arranged obliquely, that is, the center line connecting the two signal terminals 1 is arranged at an angle to both the first direction and the second direction. In this case, the grounding plate 32 still needs to be set on the extension line of the center line connecting the two signal terminals 1.

[0075] In other embodiments, the number and position of the grounding plate 32 and the grounding spring claw 34 can be changed as needed. For example, two grounding plates 32 or two grounding spring claws 34 can be provided on a side plate 312. This arrangement can refer to the arrangement of the upper grounding fisheye 33 of the grounding shield 3 in the prior art, which will not be described in detail here.

[0076] Specific embodiment 2 of the connector provided by the present invention:

[0077] This embodiment is based on Embodiment 1, and the difference between it and Embodiment 1 is as follows (see Appendix). Figure 12 and attached Figure 13 In this embodiment, the signal terminal 1 is first fixed inside the grounding shield 3, and then assembled together onto the insulating shell 21.

[0078] Specifically, see Appendix Figure 17 and in conjunction with the appendix Figure 18 and 19 In this embodiment, the two signal terminals 1 in the same differential pair are fixedly mounted in the grounding shield 3 by injection molding, and an insulator 4 for fixing and insulation is formed between the signal terminals 1 and the grounding shield 3. See Appendix Figure 14 and attached Figure 15The base 211 of the insulating shell 21 has an integral mounting hole 219 through which the grounding shield 3, the insulator 4, and the signal terminal 1 pass. A protrusion is provided on the side wall of the integral mounting hole 219, which can tightly engage with the outer wall surface of the grounding shield 3 to fix the grounding shield 3. A limiting step 41 is provided on the insulator 4, and a mounting platform 2110 is provided on the corresponding side wall of the integral mounting hole 219 for stopping and limiting the movement of the limiting step 41. (See attached diagram) Figure 16 During the assembly process, the grounding shield 3, the insulator 4, and the signal terminal 1 are inserted into the overall mounting hole 219 from the press-fit end to the insertion end. When the installation is in place, the limiting step 41 and the mounting platform 2110 stop and limit the movement.

[0079] Specific embodiment 3 of the connector provided by the present invention:

[0080] This embodiment is based on Embodiment 1, and the difference between it and Embodiment 1 is as follows (see Appendix). Figure 20 Appendix Figure 21 and attached Figure 22 In this embodiment, the shielding body 31 on the grounding shield 3 is provided with a spring arm 318 at the end away from the grounding terminal. The spring arm 318 is used to contact the grounding component on the adapter connector to reduce electromagnetic radiation caused by the short stake effect and achieve better shielding.

[0081] Specifically, the shielding body 31 has a pair of notches at the end away from the grounding terminal, and a spring arm 318 is formed between the two notches in the same pair. The end of the spring arm 318 is bent outward so that it can be pressed inward by the grounding component after contacting the grounding component on the adapter connector, thereby maintaining a clamping force between the spring arm 318 and the grounding component.

[0082] One or two spring arms 318 can be installed on the same shielding body 31, and their number and position can be selected and adjusted according to the overall layout of the connector. Moreover, in the same connector, spring arms 318 can be installed only on part of the grounding shield 3.

[0083] Specific embodiment 4 of the connector provided by the present invention:

[0084] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that only grounding claws are provided in this embodiment, and no grounding plates are provided.

[0085] Since this embodiment only uses grounding spring claws to achieve shielding between differential pairs in the first direction, the center of the root of the grounding spring claw in this embodiment is on the same straight line as the center of the corresponding two signal fisheyes. Moreover, the root of the grounding spring claw is widened in this embodiment to give it a larger shielding area.

[0086] Specific embodiment 5 of the connector provided by the present invention:

[0087] This embodiment is based on Embodiment 1. The difference between Embodiment 1 and Embodiment 1 is that in this embodiment, the grounding plate is only inserted into the corresponding common ground hole on the conductive plate, and does not make contact with the hole wall of the common ground hole for conduction. In this embodiment, the grounding plate does not participate in the common ground connection, but after testing, the grounding plate can still play a shielding role.

[0088] Specific embodiment 6 of the connector provided by the present invention:

[0089] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no connecting plate is provided in this embodiment. Since no grounding fisheye or grounding plate is required on the connecting plate, removing the connecting plate does not affect the shielding effect.

[0090] Specific embodiment 7 of the connector provided by the present invention:

[0091] This embodiment is based on Embodiment 1, but differs in that a conductive plate is not provided in this embodiment, and the common ground of each grounding shield is achieved through a shielding mesh. In this embodiment, the grounding fisheye and grounding plate do not need to be connected to the conductive plate, therefore, there is no need to provide a fisheye shoulder on the grounding fisheye, nor is there a need to provide a protrusion on the grounding plate.

[0092] Specific embodiment 8 of the connector provided by the present invention:

[0093] This embodiment is based on Embodiment 1, but the difference is that no shielding net is set in this embodiment.

[0094] Specific embodiments of the grounding shield provided by this invention:

[0095] The grounding shield is the grounding shield of any one of embodiments 1-8 of the connector, and will not be described in detail here.

[0096] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A grounding shield, characterized in that, The device includes a shielding body (31), which has a shielding cavity for accommodating differential pairs and providing shielding for the differential pairs. The shielding body (31) is provided with a grounding eye (33), a grounding spring claw (34), and a grounding plate (32) at one end corresponding to the press-fit end of the connector. The grounding eye (33), the grounding spring claw (34), and the grounding plate (32) can all be used to provide shielding between adjacent differential pairs. The grounding eye (33) is used to press-fit onto the printed circuit board. The grounding spring claw (34) is used to make contact with the conductive contact surface on the printed circuit board. The grounding plate (32) is used to be inserted into the common ground hole on the conductive plate of the connector and make contact with the conductive plate. The grounding plate (32) and the grounding spring claw (34) are arranged in combination and the grounding plate (32) and the grounding spring claw (34) in the same group are arranged adjacent to each other.

2. The grounding shield according to claim 1, characterized in that, The shielding body (31) has an inner protrusion (315) that protrudes into the inner side of the shielding body (31) at one end corresponding to the press-fit end of the connector. The grounding piece (32) and the grounding spring claw (34) are both connected to the inner protrusion (315). The end of the inner protrusion (315) away from the grounding piece (32) and the grounding spring claw (34) forms a stepped surface (316) for assembly positioning during the assembly of the grounding shield (3).

3. The grounding shield according to claim 1 or 2, characterized in that, The grounding claw (34) includes a claw root (341), a bent connecting part (342), and an elastic contact part (344). The claw root (341) is combined with the shielding body (31). The bent connecting part (342) is located between the claw root (341) and the elastic contact part (344). The bent connecting part (342) is folded outward to the grounding shield (3) so that one side of the elastic contact part (344) in the thickness direction can contact the conductive contact surface.

4. The grounding shield according to claim 3, characterized in that, The direction perpendicular to the plane where the folding angle of the bending connection part (342) is located is the bending vertical direction, and the elastic contact part (344) extends along the bending vertical direction.

5. The grounding shield according to claim 1 or 2, characterized in that, The shielding body (31) includes a base plate (311) and two side plates (312) vertically connected to both sides of the base plate (311). The base plate (311) and the two side plates (312) form the shielding cavity. The two side plates (312) are provided with grounding claws (34) and grounding plates (32). The base plate (311) is provided with grounding fisheyes (33).

6. The grounding shield according to claim 5, characterized in that, The shielding body (31) also includes a connecting plate (313) integrally connected between the two side plates (312) on one side away from the bottom plate (311), the connecting plate (313) being located at the rear end of the side plates (312).

7. A connector, comprising an insulating shell (21) and a conductive plate, characterized in that, The insulating shell (21) is fitted with a grounding shield (3) as described in any one of claims 1-4.

8. The connector according to claim 7, characterized in that, The shielding body (31) includes a base plate (311) and two side plates (312) vertically connected to both sides of the base plate (311). The base plate (311) and the two side plates (312) form the shielding cavity. The two side plates (312) are provided with grounding claws (34) and grounding plates (32) at the end corresponding to the press-fit end of the connector. The grounding fisheye (33) is provided at the end of the base plate (311) corresponding to the press-fit end of the connector.

9. The connector according to claim 8, characterized in that, The shielding body (31) also includes a connecting plate (313) integrally connected between the two side plates (312) on the side edge away from the base plate (311). The connecting plate (313) is located at one end of the side plate (312) that corresponds to the press-fit end of the connector. The insulating shell (21) is provided with a shielding mounting hole (215) that runs through the front and back for inserting the base plate (311) and the side plate (312). The grounding shield (3) is inserted into the insulating shell (21) from back to front. The rear end face of the insulating shell (21) is provided with a limiting groove (216) for the connecting plate (313) to be embedded. The bottom surface of the limiting groove (216) is used to position the forward assembly of the grounding shield (3).

10. The connector according to claim 8, characterized in that, An insulator (4) is assembled or integrally injection molded inside the shielding cavity. A differential pair is fixedly installed on the insulator (4). The insulator (4) is located at one end of the shielding cavity that corresponds to the press-fit end of the connector. An integral mounting hole (219) is provided on the insulating shell (21) for the grounding shield (3) and the insulator (4) to be installed as a whole.

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