CN212277544U - Grounding shielding structure of high-speed connector - Google Patents
Grounding shielding structure of high-speed connector Download PDFInfo
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- CN212277544U CN212277544U CN202021317951.9U CN202021317951U CN212277544U CN 212277544 U CN212277544 U CN 212277544U CN 202021317951 U CN202021317951 U CN 202021317951U CN 212277544 U CN212277544 U CN 212277544U
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Abstract
The utility model discloses a ground shield structure of high-speed connector. The grounding shielding structure of the high-speed connector comprises a shell, wherein the shell comprises a plastic cover and a metal shielding sheet, and the metal shielding sheet is covered at an opening of the plastic cover; the terminal assembly is embedded in the inner surface of the plastic cover and comprises a plurality of grounding terminals; the plastic cover is provided with convex ribs at two sides of the grounding terminal, and the convex ribs and the grounding terminal jointly enclose a plurality of accommodating grooves; the elastic conductors are arranged in the accommodating groove and are electrically connected with the grounding terminal and the metal shielding sheet. The technical scheme of the utility model the problem that the ground connection shielding structure high in manufacturing cost of high-speed connector has been solved.
Description
Technical Field
The utility model relates to a high-speed connector technical field, in particular to ground connection shielding structure of high-speed connector.
Background
In the connector research and development process, when the metal shielding sheet and the grounding terminal are connected together, a shielding structure with a 3D structure is formed, the shielding effect is better, and the high-frequency performance of connection is further optimized. The existing ground shield structure has complex processing technology and high manufacturing cost and low yield of the existing high-speed backplane connector due to large processing difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-speed connector's ground connection shielding structure, aim at solving prior art, high-speed connector's ground connection shielding structure problem with high costs of manufacture.
In order to achieve the above object, the utility model provides a ground connection shielding structure of high-speed connector, ground connection shielding structure includes:
the shell comprises a plastic cover and a metal shielding sheet, wherein the metal shielding sheet is covered at an opening of the plastic cover;
the terminal assembly is embedded in the inner surface of the plastic cover and comprises a plurality of grounding terminals; the plastic cover is provided with convex ribs at two sides of the grounding terminal, and the convex ribs and the grounding terminal jointly enclose a plurality of accommodating grooves;
the elastic conductors are arranged in the accommodating groove and are electrically connected with the grounding terminal and the metal shielding sheet.
Preferably, the elastic conductor is elastically deformable between the metal shield piece and the ground terminal.
Preferably, the elastic conductor is a conductive cloth, and the conductive cloth is attached to the metal shielding sheet.
Preferably, the conductive cloths are arranged on the metal shielding sheet at intervals.
Preferably, the elastic electric conductor is a plurality of hair buttons, and a plurality of hair buttons are distributed in each accommodating groove.
Preferably, the elastic conductor is a conductive spring, an elastic metal tube or an elastic sheet.
Preferably, the metal shielding plate is a planar structure.
Preferably, the plastic cover is provided with a plurality of fixing columns, the metal shielding sheet is provided with corresponding fixing holes, the metal shielding sheet and the plastic cover are spliced through the fixing columns, and the fixing columns are hot-melting columns.
Preferably, the terminal assembly comprises a plurality of signal terminals, the signal terminals and the ground terminals comprise contact portions, and at least one side surface of the plastic cover is provided with a through hole for the contact portions to extend out.
Preferably, the terminal assembly is embedded in the plastic cover in a one-step forming mode.
The utility model provides a ground shield structure of a high-speed connector, which comprises a shell, a terminal component and a plurality of elastic conductors, wherein the shell comprises a plastic cover and a metal shielding sheet, and the metal shielding sheet is covered at the opening of the plastic cover; the terminal assembly is embedded in the inner surface of the plastic cover and comprises a plurality of grounding terminals; the plastic cover is provided with convex ribs at two sides of the grounding terminal, and the convex ribs and the grounding terminal jointly enclose a plurality of accommodating grooves; the elastic conductor is arranged in the accommodating groove and electrically connected with the grounding terminal and the metal shielding sheet. The metal shielding sheet and the grounding terminal are connected through the elastic conductor, so that the manufacturing cost of the grounding shielding structure is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a ground shield structure of a high-speed connector according to the present invention;
FIG. 2 is a cross-sectional view of the ground shield structure of FIG. 1;
FIG. 3 is an exploded view of the ground shield structure of FIG. 1;
the reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | |
| 110 | Containing |
111 | |
| 12 | |
120 | |
| 121 | |
13 | Elastic |
| 14 | |
140 | Fixing hole |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
It should be noted that the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a ground shield structure 10 of high-speed connector. The digital signals with the clock frequency not exceeding 100MHz or the rising edge time less than 1ns are low-speed signals, and other digital signals are high-speed signals. The connector that transmits such high-speed signals is a high-speed connector.
The high-speed connector includes a high-speed backplane connector. High speed backplane connectors have evolved into fully shielded structures for better impedance control, reduced cross talk, and improved coupling between differential signals. In the connector development process, it is found that when the metal shielding plate 14 and the ground terminal 120 are connected together, a shielding structure with a 3D structure is formed, the shielding effect is better, and the high-frequency performance of the connection is further optimized.
Referring to fig. 1 to 3, the ground shield 10 of the high-speed connector includes a housing, a terminal assembly 12 and a plurality of elastic conductors 13. The casing includes plastic casing 11 and metallic shield piece 14, metallic shield piece 14 covers and establishes the uncovered department of plastic casing 11. The terminal assembly 12 is embedded in the inner surface of the plastic cover 11, and the terminal assembly 12 includes a plurality of ground terminals 120. The plastic cover 11 is formed with protruding ribs on both sides of the ground terminal 120, and the protruding ribs and the ground terminal 120 enclose a plurality of accommodating grooves 110 together. The elastic conductor 13 is disposed in the accommodating groove 110, and the elastic conductor 13 is electrically connected to the ground terminal 120 and the metal shielding plate 14. Furthermore, each of the receiving slots 110 receives at least one elastic conductor 13 therein, and the elastic conductor 13 electrically connects the metal shielding plate 14 and the ground terminal 120.
Specifically, the ground terminal 120 and the metal shield piece 14 are electrically connected by an elastic conductor 13. Compared with the conductive plastic commonly adopted in the prior art, the elastic conductor 13 has lower cost and simple processing technology. Meanwhile, since the elastic conductor 13 does not need to be formed twice in the process of processing, the ground shielding structure 10 can be directly processed in a one-step forming manner. Thus, the ground shield structure 10 using the elastic conductor 13 can simplify the process flow and reduce the manufacturing cost.
Further, the elastic conductor 13 is elastically deformable between the metal shield 14 and the ground terminal 120. Because there are many small structures inside the ground shield 10 of the high speed connector. The conductive plastic material in the prior art has poor flowability, and a plurality of fine structures can not be formed. If rigid materials are adopted as the connecting pieces, fine structures such as metal wires and metal scraps are often generated in the machining process, and the yield is low. Therefore, the elastic conductor 13 capable of being elastically deformed between the metal shield piece 14 and the ground terminal 120 is used, and the elastic conductor 13 can be more sufficiently contacted with the ground terminal 120 connected thereto in the process of processing the ground shield structure 10. Thereby obtaining better shielding effect and improving the yield.
In a preferred embodiment, the elastic conductor 13 is a conductive cloth. The conductive cloth is attached to the metal shielding plate 14. The conductive cloth is made of fiber cloth (commonly used polyester fiber cloth) as a base material, and is subjected to pre-treatment and then is applied with an electroplated metal coating, so that the conductive cloth has the metal characteristic. The conductive fabric is precisely processed to form the conductive fiber fabric. The conductive cloth contains high-elasticity PU foam inside. The compression amount of the conductive cloth is up to 60%. Therefore, the conductive cloth can be elastically deformed in the connecting direction of the metal shielding plate 14 and the ground terminal 120. Meanwhile, the conductive cloth has a good electromagnetic wave shielding effect, and the ground shielding structure 10 formed by using the conductive cloth as the elastic conductor 13 can obtain a good shielding effect. Meanwhile, the conductive cloth is easy to process, and various shapes and sizes can be processed according to application requirements. This also reduces the difficulty of manufacturing the ground shield 10. Specifically, the conductive cloth is integrally attached to the surface of the metal shielding sheet 14 facing the opening of the plastic cover 11 through a tool. Further, the combined conductive cloth is subjected to die cutting, and the redundant part is removed. Namely, the conductive cloth is processed and cut into a plurality of strip-shaped conductive cloths. The plurality of strip-shaped conductive cloths are arranged on the metal shielding sheet 14 at intervals. Specifically, the position and the shape of the strip-shaped conductive cloth are adapted to the shape of the accommodating groove 110. That is, the elastic conductor 13 may be filled in the receiving groove 110, so that the metal shielding plate 14 and the ground terminal 120 are electrically connected.
In another preferred embodiment, the elastic conductive body 13 is a plurality of buttons, and a plurality of buttons are distributed in each of the receiving slots 110. The fuzz button is a non-welded cylindrical elastic electric connector, and can be used for transmission of high-frequency signals and interconnection of low-frequency signals. Specifically, a plurality of fuzz buttons are poured into the plurality of accommodating grooves 110 on the plastic cover 11, and a plurality of fuzz buttons are arranged in each accommodating groove 110. Specifically, the fuzz buttons are poured into the accommodating groove 110, laid and compacted, and then the redundant fuzz buttons are removed. The metal shielding plate 14 is covered on the plastic cover 11, and at this time, the fuzz button located in the accommodating groove 110 is electrically connected to the metal shielding plate 14 and the ground terminal 120.
Further, the elastic conductor 13 includes, but is not limited to, a conductive spring, an elastic metal tube or a spring plate. The number of the elastic conductors 13 such as the conductive springs, the elastic metal tubes or the elastic pieces is greater than or equal to the number of the accommodating grooves 110. Further, each receiving slot 110 receives at least one elastic conductor 13, and the elastic conductor 13 electrically connects the metal shielding plate 14 and the ground terminal 120.
Referring to fig. 1 and 3, the metal shielding plate 14 has a planar structure. The metal shielding plate 14 with a special-shaped structure is generally adopted in the prior art. If the metal shielding sheet 14 is of a special-shaped stretching structure, the mold structure is complex, and problems of incomplete stretching dimension, tensile crack, large product deformation, low production efficiency and the like are easily caused in the stamping process. And the metal shielding sheet 14 with the planar structure can avoid the problems that the metal shielding sheet 14 with the special-shaped stretching structure is difficult to process and has low yield.
Further, a metal shielding plate 14 having a planar structure is disposed over the opening of the plastic cover 11. The plastic cover 11 is provided with a plurality of fixing posts 111, the metal shielding sheet 14 is provided with corresponding fixing holes 140, the metal shielding sheet 14 and the plastic cover 11 are inserted through the fixing posts 111, and the fixing posts 111 are hot-melt posts. Further, the fixing posts 111 are heat-melting posts. That is, in the process of manufacturing the ground shield structure 10, the fixing posts 111 of the plastic housing 11 are inserted into the fixing holes 140 of the metal shield 14. Thus, the metal shielding plate 14 is inserted into the plastic housing 11. Specifically, the fixing posts 111 are hot-melt posts. That is, after the plugging process is completed, the fixing post 111 is thermally fused, and the fixing post 111 is deformed after being thermally fused, so that the metal shielding plate 14 and the ground terminal 120 are in contact with each other through the elastic conductor 13. Thus, the ground shield 10 has a simple manufacturing process, which can significantly reduce the manufacturing cost.
Referring to fig. 1, the terminal assembly 12 is embedded in the plastic cover 11 by one-step molding. The insulating material of the plastic cover 11 is preferably plastic. Specifically, during the processing of the terminal assembly 12. The plastic cover 11 and the terminal assembly 12 are formed as a single piece by one-step molding. In the subsequent manufacturing process of the ground shield 10, the elastic conductor 13 and the metal shield piece 14 are further processed. Finally, the integral piece, the elastic electrical conductor 13 and the metal shield 14 are assembled. Compared with the secondary forming step required in the prior art, the present embodiment adopts a simpler and more convenient assembly manner. In this way, the manufacturing steps of the ground shield structure 10 are simplified, and the manufacturing cost of the ground shield structure 10 is reduced.
Referring to fig. 1, the terminal assembly 12 includes a plurality of signal terminals 121, the signal terminals 121 and the ground terminals 120 include contact portions, and at least one side of the plastic cover 11 is provided with a through hole for the contact portion to extend out. Specifically, two adjacent side surfaces of the plastic cover 11 are provided with a plurality of through holes for the contact parts to extend out. The signal terminals 121 adopt a differential signal pair structure for signal transmission. The ground terminal 120 mainly functions as an electromagnetic shield to reduce crosstalk, and the metal shield plate 14 functions as a protector and an electromagnetic shield. Further, the ground shield 10 of the high-speed connector is inserted into the housing of the high-speed connector through the contact portion. Since in high-speed communication systems, single-ended signals are replaced by differential signals, meaning that the signals are represented by the voltage difference of a pair of dedicated lines. Thus, two different wires are required for each differential signal, but the noise isolation performance (crosstalk and EMI prevention) is better and the operating voltage is lower. High speed backplane connectors have evolved to be completely shielded and operate like symmetric cables for better impedance control, reduced crosstalk, and improved coupling between differential signals. Differential signal pairs must arrive at the transmission destination at the same time, so the length of the conductive lines must be designed to minimize the difference in signal pair length and signal skew. The plated through holes are a major source of capacitive signal noise generation and reflection, and therefore the connection with the terminal assemblies 12 can better ensure the integrity of the signal transmitted by the high speed connector.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A ground shield structure for a high speed connector, comprising:
the shell comprises a plastic cover and a metal shielding sheet, wherein the metal shielding sheet is covered at an opening of the plastic cover;
the terminal assembly is embedded in the inner surface of the plastic cover and comprises a plurality of grounding terminals; the plastic cover is provided with convex ribs at two sides of the grounding terminal, and the convex ribs and the grounding terminal jointly enclose a plurality of accommodating grooves;
the elastic conductors are arranged in the accommodating groove and are electrically connected with the grounding terminal and the metal shielding sheet.
2. The ground shield structure of claim 1, wherein said elastic conductive body is elastically deformable between said metal shield plate and said ground terminal.
3. The ground shield structure of claim 2, wherein said resilient conductive body is a conductive cloth, said conductive cloth being attached to said metal shield sheet.
4. The ground shield structure of claim 3, wherein said plurality of conductive cloths are disposed at intervals on said metal shield sheet.
5. The ground shield structure of claim 2, wherein the elastic conductor is a plurality of fuzz buttons, and a plurality of fuzz buttons are distributed in each of the receiving slots.
6. The ground shield structure of claim 2, wherein said elastic electrical conductor is a conductive spring, an elastic metal tube, or a spring sheet.
7. The ground shield structure of claim 1, wherein said metal shield blades are planar in configuration.
8. The ground shield structure of claim 1, wherein the plastic housing is formed with a plurality of fixing posts, the metal shielding plate is formed with corresponding fixing holes, the metal shielding plate is inserted into the plastic housing through the fixing posts, and the fixing posts are hot-melt posts.
9. The ground shield structure of claim 1, wherein said terminal assembly includes a plurality of signal terminals, said signal terminals and said ground terminals include contact portions, and said plastic cover has at least one side provided with a through hole through which said contact portions extend.
10. The ground shield structure of claim 1, wherein said terminal assembly is embedded in said plastic shell by one-shot molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021317951.9U CN212277544U (en) | 2020-07-07 | 2020-07-07 | Grounding shielding structure of high-speed connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021317951.9U CN212277544U (en) | 2020-07-07 | 2020-07-07 | Grounding shielding structure of high-speed connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212277544U true CN212277544U (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021317951.9U Active CN212277544U (en) | 2020-07-07 | 2020-07-07 | Grounding shielding structure of high-speed connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212277544U (en) |
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2020
- 2020-07-07 CN CN202021317951.9U patent/CN212277544U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: Room 401, Building 1 and Room 201, Building 5, No. 61, Guomao Avenue South, Hualong Town, Panyu District, Guangzhou, Guangdong 510000 Patentee after: AVIC Optoelectronics Precision Electronics (Guangdong) Co.,Ltd. Address before: 518000 Guangdong Shenzhen Baoan District Songgang street, Tan tau community, Furong Road Exhibition Technology Park 1 buildings Patentee before: CHINA AVIATION PHOTOELECTRICITY PRECISION ELECTRONIC (SHENZHEN) CO.,LTD. |