A shield, a terminal member, and a connector using the same

Abstract

The present application relates to the field of electrical connectors, and particularly relates to a shielding sheet, a terminal component and a connector using the same. The shielding sheet comprises a sheet body for covering one side of a differential pair, the sheet body is provided with a connecting structure for fixedly connecting with an insulating block of the corresponding differential pair, and at least one shielding position for shielding the corresponding differential pair is further provided on the sheet body, two sides of the shielding position are respectively provided with a contact portion for contacting with a fixed segment of a ground pin on two sides of the corresponding differential pair, and the contact portion extends from the sheet body to one side for pressing the corresponding ground pin. Since the connecting structure is matched with the insulating block, the contact portion only needs to contact with the corresponding ground pin, and even when the width size of the connector ground pin is small or the distance between the differential pairs is small, the shielding sheet can still be normally arranged, thereby solving the problem that the shielding structure cannot be arranged when the width size of the connector ground pin is small or the distance between the differential pairs is small.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical connectors, and in particular to a shielding sheet, a terminal component and a connector using the same. BACKGROUND

[0002] In high-speed connectors, in order to suppress crosstalk between differential pairs for transmitting signals, it is necessary to provide a ground pin on both sides of the differential pair, and in general, a corresponding shielding sheet is also configured on the ground pin. The existing shielding sheet is in the shape of a U, which is fixed by being provided with a peanut buckle on the ground pin or being welded to the ground pin, so as to cover the differential pair in a shielding cavity formed by the ground pin and the shielding sheet, so as to realize differential line shielding and improve crosstalk performance.

[0003] The shielding sheet with the above structure is suitable for the case where the ground pin is wide and the distance between the differential pairs is large. When the width of the ground pin is small or the distance between the differential pairs is small, the traditional U-shaped shielding structure will be difficult to install, resulting in the fact that there is no suitable shielding scheme when the width of the ground pin of the electrical connector is small or the distance between the differential pairs is small. SUMMARY

[0004] The purpose of the present application is to provide a shielding sheet to solve the problem that it is impossible to arrange a shielding structure when the width of the ground pin of the connector is small or the distance between the differential pairs is small.

[0005] Meanwhile, the purpose of the present application is also to provide a terminal component and a connector using the above shielding sheet.

[0006] In order to solve the above problem, the shielding sheet of the present application adopts the following technical solution: a shielding sheet, comprising a sheet body for covering one side of a differential pair, the sheet body being provided with a connecting structure for fixed connection with an insulating block of the corresponding differential pair, and at least one shielding position for shielding the corresponding differential pair being further provided on the sheet body, two sides of the shielding position being respectively provided with a contact portion for contacting a fixed section of a ground pin on both sides of the corresponding differential pair, the contact portion extending from the sheet body to one side for pressing the corresponding ground pin.

[0007] Beneficial effects: due to the setting of the connecting structure and the contact part, when using the shielding sheet, the connecting structure can be connected with the insulating block of the connector to realize the installation of the shielding sheet, and the contact part is in contact with the two grounding pins on both sides of the corresponding differential pair to realize the "encircling" of the corresponding differential pair, thereby playing the role of shielding the differential pair and suppressing crosstalk. Since the connecting structure cooperates with the insulating block, the contact part only needs to be in contact with the corresponding grounding pin, and even when the width size of the connector grounding pin is small or the distance between the differential pairs is small, the shielding sheet can still be normally arranged, thereby solving the problem that the shielding structure cannot be arranged when the width size of the connector grounding pin is small or the distance between the differential pairs is small.

[0008] Further, the contact part is a flexible tongue structure. When the contact part is a flexible tongue structure, on the one hand, it can adapt to the size error of each component, so that the contact part can be in contact with the grounding pin, and on the other hand, it can always maintain the contact force with the grounding pin under the action of elastic deformation, thereby ensuring the reliability of the contact.

[0009] Further, the contact part is cut out and formed on the sheet body. The contact part cut out on the sheet body is easier to realize and has a simple structure.

[0010] Further, the contact part narrows from the root to the end. The structure of the contact part narrowing from the root to the end enables it to adapt to the grounding pin with a narrower width and is more likely to avoid yielding.

[0011] Further, the sheet body is further provided with a contact arm for contacting the plug-in section of the grounding pin on both sides of the differential pair, and the contact arm forms a cantilever structure on the sheet body. The contact arm can realize the contact with the plug-in end of the grounding pin, and together with the contact part, the sheet body forms a structure simulating a U-shaped shielding sheet.

[0012] Further, the contact arm is a flexible contact arm. The effect of the flexible contact arm is the same as that of the flexible tongue structure of the contact part.

[0013] Further, the contact arm narrows from the back to the front. The structure of the contact arm narrowing from the root to the end enables it to adapt to the grounding pin with a narrower width and is more likely to avoid yielding.

[0014] Further, the connecting structure is a clamping head or a clamping hole for clamping with the insulating block, or a positioning column or a positioning hole for hot melting. The connecting structure formed by the clamping head or the clamping hole is more convenient to connect with the insulating block, has a simple structure, and occupies a small space.

[0015] The terminal component of the present application adopts the following technical scheme:

[0016] The terminal component comprises at least one differential pair, ground pins arranged on both sides of the differential pair, the differential pair and the ground pins are fixedly installed on corresponding insulating blocks, the insulating blocks are provided with shielding sheets, the differential pair is shielded by the shielding sheets to suppress crosstalk; the shielding sheet comprises a sheet body for covering one side of the differential pair, the sheet body is provided with a connecting structure for fixedly connecting with the insulating block of the corresponding differential pair, and at least one shielding position for shielding the corresponding differential pair is further arranged on the sheet body, the two sides of the shielding position are respectively provided with contact portions for contacting with the fixed sections of the ground pins on both sides of the corresponding differential pair, and the contact portions extend from the sheet body to one side to press the corresponding ground pins.

[0017] Beneficial effects: the connecting structure and the contact portion are arranged, the insulating block of the connector is connected through the connecting structure to realize the installation of the shielding sheet, and the contact portion is in contact with the two ground pins on both sides of the corresponding differential pair to realize the "encircling" of the corresponding differential pair, thereby playing the role of shielding the differential pair and suppressing crosstalk. Since the connecting structure cooperates with the insulating block, the contact portion only needs to be in contact with the corresponding ground pin, even when the width size of the connector ground pin is small or the distance between the differential pairs is small, the shielding sheet can still be normally arranged, thereby solving the problem that the shielding structure cannot be arranged when the width size of the connector ground pin is small or the distance between the differential pairs is small.

[0018] Further, the contact portion is a flexible tongue structure. When the contact portion is a flexible tongue structure, on the one hand, it can adapt to the size error of each component, so that the contact portion can be in contact with the ground pin, and on the other hand, it can always maintain the contact force with the ground pin under the action of elastic deformation, thereby ensuring the reliability of the contact.

[0019] Further, the contact portion is cut out and formed on the sheet body. The contact portion cut out on the sheet body is easier to realize and has a simple structure.

[0020] Further, the contact portion narrows from the root to the end. The structure of the contact portion narrowing from the root to the end enables it to adapt to the ground pin with a narrower width and is more likely to avoid yielding.

[0021] Further, the sheet body is further provided with contact arms respectively for contacting with the insertion sections of the ground pins on both sides of the differential pair, and the contact arms form a cantilever structure on the sheet body. The contact arms can realize the contact with the insertion end of the ground pin, and together with the contact portion, the sheet body forms a structure simulating a U-shaped shielding sheet.

[0022] Further, the contact arm is a flexible contact arm. The effect of arranging the contact arm as a flexible contact arm is the same as arranging the contact portion as a flexible tongue structure.

[0023] Further, the contact arm is narrower from the rear to the front. The structure of the contact arm narrowing from the root to the end enables it to adapt to the ground needle with narrower width, and it is easier to avoid yielding.

[0024] Further, the connecting structure is a clamping head or a clamping hole for clamping with the insulating block; or a positioning column or a positioning hole for hot melting. The connecting structure in the form of a clamping head or a clamping hole will be more convenient for connecting with the insulating block, and the structure is simple and occupies small space.

[0025] Further, the tail end of each ground needle is bent towards the shielding sheet and contacts the shielding sheet. When the tail end of the ground needle contacts the shielding sheet, the contact points with the shielding sheet can be increased, and the common ground can be more reliably achieved.

[0026] The connector of the present application adopts the following technical solutions:

[0027] The connector comprises a shell and at least one terminal component arranged in the shell, the terminal component comprises at least one differential pair, ground needles arranged on both sides of the differential pair, the differential pair and the ground needles are fixedly installed on corresponding insulating blocks, the insulating blocks are provided with shielding sheets, the differential pair is shielded by the shielding sheets to suppress crosstalk; the shielding sheet comprises a sheet body for covering one side of the differential pair, the sheet body is provided with a connecting structure for fixed connection with the insulating block of the corresponding differential pair, at least one shielding position for shielding the corresponding differential pair is also arranged on the sheet body, the two sides of the shielding position are respectively provided with contact portions for contacting the fixed sections of the ground needles on both sides of the corresponding differential pair, and the contact portions extend from the sheet body to one side to press the corresponding ground needles.

[0028] Advantages: due to the connecting structure and the contact portion, the insulating block of the connector can be connected through the connecting structure to achieve the installation of the shielding sheet, and the contact portion contacts the two ground needles on both sides of the corresponding differential pair during the installation, thereby realizing the "encircling" of the corresponding differential pair, and playing the role of shielding the differential pair and suppressing crosstalk. Since the connecting structure cooperates with the insulating block, the contact portion only needs to contact the corresponding ground needle, even when the width size of the connector ground needle is small or the distance between the differential pairs is small, the shielding sheet can still be normally arranged, thereby solving the problem that the shielding structure cannot be arranged when the width size of the connector ground needle is small or the distance between the differential pairs is small.

[0029] Further, the contact portion is in the form of a resilient tongue. When the contact portion is in the form of a resilient tongue, on the one hand, it can adapt to the dimensional error of each component, so that the contact portion can contact the ground needle, and on the other hand, it can always maintain the contact force with the ground needle under the action of elastic deformation, thereby ensuring the reliability of the contact.

[0030] Further, the contact portion is cut out and formed on the sheet body. The contact portion cut out on the sheet body is easier to realize and has simple structure.

[0031] Further, the contact portion is tapered from the root to the end. The tapered structure of the contact portion from the root to the end enables it to adapt to the ground pin with narrower width and is easier to avoid yielding.

[0032] Further, the sheet body is further provided with a contact arm respectively used to contact the insertion section of the ground pin on both sides of the differential pair, and the contact arm forms a cantilever structure on the sheet body. The contact arm can realize the contact with the insertion end of the ground pin, and together with the contact portion, the sheet body forms the structure of the analog U-shaped shielding sheet.

[0033] Further, the contact arm is an elastic contact arm. The effect of the elastic contact arm is the same as that of the elastic tongue structure of the contact portion.

[0034] Further, the contact arm is tapered from the back to the front. The tapered structure of the contact arm from the root to the end enables it to adapt to the ground pin with narrower width and is easier to avoid yielding.

[0035] Further, the connecting structure is a clamping head or a clamping hole used to clamp the insulating block; or a positioning column or a positioning hole used for hot melting. The connecting structure of the clamping head or the clamping hole is easier to connect with the insulating block, has simple structure and occupies small space.

[0036] Further, the tail end of each ground pin is bent towards the shielding sheet to contact the shielding sheet. When the tail end of the ground pin contacts the shielding sheet, the contact points with the shielding sheet are increased, and the common ground is more reliably realized. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is the use state diagram of the shielding sheet of embodiment 1 of the present application, and is also the structural schematic diagram of the terminal component of embodiment 1 of the present application;

[0038] Figure 2 is Figure 1 is the front view cooperation schematic diagram (part) of the shielding sheet, the insulating block, the differential pair and the ground pin in

[0039] Figure 3 is the back view cooperation schematic diagram (part) of the shielding sheet, the insulating block, the differential pair and the ground pin in Figure 1

[0040] In the figure: 11, differential pair; 12, sheet body; 13, insulating block; 14, clamping head; 15, contact portion; 16, ground pin; 17, contact arm. DETAILED DESCRIPTION

[0041] ​In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application, i.e., the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0042] Therefore, the detailed description of the embodiments of the present application provided below in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0043] It should be noted that the relationship terms such as "first" and "second" and the like that can appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between the entities or operations. Moreover, terms such as "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "including a" and the like do not exclude the presence of additional identical elements in the process, method, article or device including the elements.

[0044] The features and properties of the present application will be further described in detail below with reference to the embodiments.

[0045] Embodiment 1 of the shielding sheet of the present application:

[0046] The shielding sheet can be used in a differential connector to shield the differential pair 11 of terminal components to suppress signal crosstalk.

[0047] As shown in Figures 1-3 , the shielding sheet includes a sheet body 12, which is a main component for shielding and is used to cover one side of the differential pair 11 in use, and a connecting structure provided on the sheet body 12, which is used to connect with the insulating block 13 of the terminal component to realize positioning and fixing of the sheet body 12. In this embodiment, the connecting structure is specifically a clamping hole provided on the sheet body 12. Figure 1 As shown in , a clamping head 14 is provided on the insulating block 13, which is specifically a mushroom head structure in this embodiment, and when it passes through the clamping hole on the sheet body 12, the sheet body 12 can be fixed on the insulating block.

[0048] The shielding piece further has shielding positions corresponding to the signal pairs on the terminal components. In this embodiment, there are 12 shielding positions. The contact portions 15 are arranged on both sides of each shielding position on the piece body 12. The contact portions 15 are used to contact the fixed sections of the ground pins 16 on both sides of the corresponding differential pair and also serve as shielding structures to form an enclosing structure for the corresponding differential pair to better shield the differential pair. In order to contact the corresponding ground pins 16, the contact portions 15 extend from the piece body 12 towards the side close to the ground pins 16. In this embodiment, the contact portions 15 are in the form of elastic tongues which are cut out and formed on the piece body 12, for example, by punching. Figure 1 Figure 2 As can be seen from Figs. 2 and 3, in this embodiment, the contact portions 15 are tapered from the root to the end to form a trapezoidal structure.

[0049] The piece body 12 further has contact arms 17 which are used to contact the plug-in sections of the ground pins 16 on both sides of the differential pair 11. The contact arms 17 form cantilever structures on the piece body 12. In this embodiment, the contact arms 17 are also formed by punching and are integral with the piece body 12 and are elastic. The contact arms 17 also taper from the rear to the front. In this embodiment, the rear of the piece body is connected to all the ground pins. In order to achieve the connection, the tail ends of the ground pins are bent towards the piece body. In some embodiments, the ground pins themselves can be connected to form a common ground structure. In another case, the ground pins are separate and are connected to the piece body to form a common ground structure.

[0050] In use, the shielding piece is connected to the insulating blocks 13 of the terminal components by the connecting structure to achieve installation of the shielding piece. At the same time, the contact portions 15 contact the two ground pins 16 on both sides of the corresponding differential pair to achieve grounding. Thus, the corresponding differential pair 11 is enclosed to shield the differential pair and suppress crosstalk. Since the connecting structure is matched with the insulating blocks 13, the contact portions 15 only need to contact the corresponding ground pins 16. Even when the width of the ground pins of the connector is small or the distance between the differential pairs is small, the shielding piece can still be arranged normally to solve the problem that the shielding structure cannot be arranged when the width of the ground pins of the connector is small or the distance between the differential pairs is small.

[0051] Embodiment 2 of the shielding piece of the present application:

[0052] ​In the shielding sheet of the present application, 12 shielding positions are arranged on the sheet body, and a single shielding sheet can be used for shielding crosstalk protection of 12 differential pairs. In the present embodiment, only one shielding position is arranged on the sheet body, and a single shielding sheet is only used for shielding protection of a single differential pair. When there are multiple differential pairs on the terminal component, multiple shielding sheets can be arranged to meet the shielding protection requirements. Of course, in other embodiments, the number of shielding positions on the sheet body can also be set to any number according to specific needs.

[0053] Embodiment 3 of the shielding sheet of the present application:

[0054] In the shielding sheet of the present application, in addition to the contact part for contacting the fixed section of the grounding pin, a contact arm for contacting the plug-in end of the grounding pin is also arranged. In the present embodiment, the contact arm is omitted, and the connection of the sheet body with the grounding pin and the shielding protection of the differential pair are realized only through the contact part.

[0055] Embodiment 4 of the shielding sheet of the present application:

[0056] In the shielding sheet of the present application, both the contact part and the contact arm adopt an integrated structure with the sheet body, and in the present embodiment, the contact part is fixedly connected with the sheet body by welding. Of course, the contact arm can also be connected with the sheet body by welding. In other embodiments, the connection between the contact part and the contact arm and the sheet body can also be a structure such as crimping, riveting, etc., which will not be described here.

[0057] Embodiment 5 of the shielding sheet of the present application:

[0058] In the shielding sheet of the present application, both the contact part and the contact arm adopt an elastic structure, and in the present embodiment, both or one of them adopts a rigid structure. Since the grounding pin itself has elasticity, the contact part and the contact arm adopting a rigid structure can also realize the connection with the grounding pin. The rigid contact part can be formed by arranging a protruding rib on the sheet body, or can be bent out on the sheet body.

[0059] Embodiment 6 of the shielding sheet of the present application:

[0060] In the shielding sheet of the present application, the connecting structure on the sheet body is a clamping hole. In the present embodiment, the connecting structure on the sheet body can also be a clamping head. Of course, in other embodiments, the connecting structure can also be only a surface at a corresponding position on the sheet body, which can be connected with the insulator by bonding. Of course, in other embodiments, the connecting structure can also be a hot melt or riveting connecting structure.

[0061] Embodiment of the terminal component of the present application:

[0062] The terminal component differential pair, the ground pin arranged on both sides of the differential pair, the differential pair and the ground pin are fixedly installed on the corresponding insulating block, the insulating block is provided with the shielding sheet of the application, and the differential pair is shielded by the shielding sheet to inhibit crosstalk.

[0063] Embodiments of the connector of the application:

[0064] The connector comprises a shell and at least one terminal component arranged in the shell, and the terminal component is the terminal component of the application.

Claims

1. A terminal component comprising at least one differential pair, ground pins provided on both sides of the differential pair, characterized in that, The differential pair and the grounding pin are fixedly installed on the corresponding insulating block, and the plug-in end of the grounding pin is hook-shaped, the insulating block is a long strip-shaped insulating block, the plug-in end and the other end of the differential pair and the grounding pin form cantilever structures relative to the insulating block, the insulating block is provided with a shielding sheet, the shielding sheet comprises a sheet body covering one side of the differential pair, the sheet body is provided with a connecting structure for fixedly connecting with the insulating block of the corresponding differential pair, at least one shielding position for shielding the corresponding differential pair is further provided on the sheet body, two sides of the shielding position are respectively provided with contact portions for contacting with the fixed segments of the grounding pins on the two sides of the corresponding differential pair, the contact portions extend from the sheet body to one side for pressing the corresponding grounding pins, the sheet body is further provided with contact arms respectively for contacting with the plug-in segments of the grounding pins on the two sides of the differential pair, the contact arms form cantilever structures on the sheet body, the contact portions and the contact arms are respectively located at the front and rear sides of the insulating block in the plug-in direction of the grounding pin, and the contact arms can contact with the hook back of the hook-shaped plug-in end of the grounding pin, together with the contact portions, the sheet body forms a structure simulating a U-shaped shielding sheet, the differential pair is shielded by the shielding sheet to suppress crosstalk.

2. The terminal component of claim 1, wherein The tail end of each grounding pin is bent towards the shielding sheet and contacts with the shielding sheet.

3. The terminal component according to claim 1 or 2, characterized in that, The contact portion is an elastic tongue structure.

4. The terminal component of claim 3, wherein The contact portion is cut out and formed on the sheet body.

5. The terminal component of claim 3, wherein The contact portion narrows from the root to the end.

6. The terminal component according to claim 1 or 2, characterized by The contact arm is an elastic contact arm.

7. The terminal component according to claim 1 or 2, characterized by The contact arm narrows from the rear to the front.

8. The terminal component according to any one of claims 1, 2, 4, 5, wherein The connecting structure is a clamping head or a clamping hole for clamping with the insulating block, or is a positioning column or a positioning hole for hot melting.

9. A connector comprising a housing and at least one terminal member disposed within the housing, the terminal member comprising at least one differential pair, ground pins disposed on either side of the differential pair, characterized in that, The differential pair and the grounding pin are fixedly installed on the corresponding insulating block, and the plug-in end of the grounding pin is hook-shaped, the insulating block is a long strip-shaped insulating block, the plug-in end and the other end of the differential pair and the grounding pin form cantilever structures relative to the insulating block, the insulating block is provided with a shielding sheet, the shielding sheet comprises a sheet body covering one side of the differential pair, the sheet body is provided with a connecting structure for fixedly connecting with the insulating block of the corresponding differential pair, at least one shielding position for shielding the corresponding differential pair is further provided on the sheet body, two sides of the shielding position are respectively provided with contact portions for contacting with the fixed segments of the grounding pins on the two sides of the corresponding differential pair, the contact portions extend from the sheet body to one side for pressing the corresponding grounding pins, the sheet body is further provided with contact arms respectively for contacting with the plug-in segments of the grounding pins on the two sides of the differential pair, the contact arms form cantilever structures on the sheet body, the contact portions and the contact arms are respectively located at the front and rear sides of the insulating block in the plug-in direction of the grounding pin, and the contact arms can contact with the hook back of the hook-shaped plug-in end of the grounding pin, together with the contact portions, the sheet body forms a structure simulating a U-shaped shielding sheet, the differential pair is shielded by the shielding sheet to suppress crosstalk.

10. The connector of claim 9, wherein, The tail end of each grounding pin is bent towards the shielding sheet and contacts with the shielding sheet.

11. The connector of claim 9 or 10, wherein, The contact portion is an elastic tongue structure.

12. The connector of claim 11, wherein, The contact portion is cut out and formed on the sheet body.

13. The connector of claim 11, wherein, The contact portion narrows from the root to the end.

14. The connector of claim 9 or 10, wherein, The contact arm is an elastic contact arm.

15. The connector of claim 9 or 10, wherein, The contact arm narrows from back to front.

16. The connector of claim 9 or 10 or 12 or 13, wherein, The connecting structure is a clamping head or a clamping hole for clamping with an insulation block, or is a positioning column or a positioning hole for hot melting.

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