CN109861037B - Shielding structure for crosstalk signal and high-speed signal transmission device - Google Patents

Shielding structure for crosstalk signal and high-speed signal transmission device Download PDF

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Publication number
CN109861037B
CN109861037B CN201910108070.1A CN201910108070A CN109861037B CN 109861037 B CN109861037 B CN 109861037B CN 201910108070 A CN201910108070 A CN 201910108070A CN 109861037 B CN109861037 B CN 109861037B
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shielding
signal transmission
transmission device
speed signal
shield
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CN109861037A (en
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李文强
程子豪
李彦
赵武
凌思彤
孙宏彪
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Sichuan University
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Sichuan University
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Abstract

The invention provides a shielding structure for crosstalk signals and a high-speed signal transmission device, and relates to the field of connectors. The shielding structure for crosstalk signals comprises an insulating base, a plurality of differential signal pairs and a shielding assembly, wherein the differential signal pairs are sequentially arranged on the insulating base at intervals, the shielding assembly is connected with the insulating base and provided with a plurality of shielding units, the shielding units surround the differential signal pairs in a one-to-one correspondence mode, and the differential signal pairs are used for being connected with a high-speed signal transmission device body so that the shielding assembly can position the high-speed signal transmission device body. The shielding structure for crosstalk signals has the advantages of simple structure, easiness in expansion, improvement of shielding effect, cost saving and improvement of economic benefit.

Description

Shielding structure for crosstalk signal and high-speed signal transmission device
Technical Field
The present invention relates to the field of connectors, and in particular, to a shielding structure for crosstalk signals and a high-speed signal transmission apparatus.
Background
The high-speed signal transmission device is a connector commonly used for large-scale communication equipment, ultrahigh-performance servers, supercomputers, industrial computers and high-end storage equipment. The high-speed signal transmission device is mainly used for connecting a single board and a back board, a 90-degree vertical structure is formed between the single board and the back board, and high-speed differential signals or single-ended signals and large currents are transmitted.
At present, a common high-speed signal transmission device on the market has a complex structure, a shielding structure for crosstalk signals does not have a positioning function, the manufacturing cost is high, the shielding structure for crosstalk signals is difficult to expand, and the shielding effect is poor.
Disclosure of Invention
One of the objectives of the present invention is to provide a shielding structure for crosstalk signals, which has a simple structure, is easy to expand, improves the shielding effect, and can save cost and improve economic benefits.
Another object of the present invention is to provide a high-speed signal transmission device, which has a simple structure, is easy to expand, has an improved shielding effect, and can save cost and improve economic efficiency.
In order to achieve the above object, the present invention provides a technical solution:
the embodiment of the invention provides a shielding structure for crosstalk signals, which comprises an insulating base, a plurality of differential signal pairs and a shielding assembly, wherein the differential signal pairs are sequentially arranged on the insulating base at intervals, the shielding assembly is connected with the insulating base and is provided with a plurality of shielding units, the shielding units correspondingly surround the differential signal pairs one by one, and the differential signal pairs are used for being connected with a high-speed signal transmission device main body so that the shielding assembly can be used for positioning the high-speed signal transmission device main body.
Further, the shielding subassembly includes first shield, a plurality of second shield and third shield, first shield, a plurality of the second shield with the third shield all with insulating base connects, just first shield with the third shield sets up relatively, and is a plurality of the second shield in proper order the interval set up in first shield with between the third shield, and form a plurality ofly the shielding unit.
Further, the first shielding piece comprises a first shielding plate and a first shielding part which are connected with each other, the first shielding plate and the first shielding part are connected with the insulating base, and the first shielding plate and the first shielding part and the second shielding piece can form the shielding unit.
Furthermore, a first positioning inclined plane is arranged on the first shielding plate and used for positioning with the high-speed signal transmission device main body.
Furthermore, the first shielding part further comprises a first grounding pin, the first grounding pin is connected with the first shielding plate, and the first grounding pin is far away from the first positioning inclined plane.
Further, the second shield includes the second shield and with second shielding portion, third shielding portion and the fourth shielding portion that the second shield connects gradually, the second shielding portion the third shielding portion the fourth shielding portion with the second shield all with insulating base connects, the second shielding portion with the fourth shielding portion is located one side of second shield, just the third shielding portion is located the opposite side of second shield.
Further, the second shielding part further comprises a second grounding pin, and the second grounding pin is connected with the second shielding plate.
Further, the third shielding piece comprises a third shielding plate, and a fifth shielding part and a sixth shielding part which are connected with the third shielding plate, the fifth shielding part, the sixth shielding part and the third shielding plate are connected with the insulating base, the fifth shielding part and the sixth shielding part are located on the same side of the third shielding plate, and the fifth shielding part, the sixth shielding part, the third shielding plate and the second shielding piece can form the shielding unit.
Furthermore, the third shielding part further comprises a third grounding pin, the third grounding pin is connected with the third shielding plate, a second positioning inclined plane is arranged on the third shielding plate, the second positioning inclined plane is used for positioning the high-speed signal transmission device main body, and the third grounding pin is far away from the second positioning inclined plane.
The embodiment of the invention provides a high-speed signal transmission device which comprises a high-speed signal transmission device main body and a shielding structure for crosstalk signals. The shielding structure for crosstalk signals comprises an insulating base, a plurality of differential signal pairs and a shielding assembly, the differential signal pairs are sequentially arranged on the insulating base at intervals, the shielding assembly is connected with the insulating base and used for positioning a high-speed signal transmission device main body, the shielding assembly is provided with a plurality of shielding units, and the shielding units are in one-to-one correspondence to surround the differential signal pairs. The high-speed signal transmission device main body is connected with the plurality of differential signal pairs, and the high-speed signal transmission device main body can be positioned through the shielding component.
Compared with the prior art, the shielding structure for crosstalk signals and the high-speed signal transmission device provided by the invention have the beneficial effects that:
the shielding structure for crosstalk signals and the high-speed signal transmission device provided by the invention have the advantages that the shielding assembly is easy to expand, more shielding units are convenient to form, each shielding unit correspondingly surrounds one differential signal pair, the anti-interference capability is higher, and the shielding effect is improved. And the shielding assembly can also align the main body of the high-speed signal transmission device, so that the cost of additionally arranging a positioning shell is saved, the economic benefit is improved, and the whole shielding structure can achieve the effect of simplicity and compactness.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an exploded schematic view of a high-speed signal transmission apparatus according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a shielding structure for crosstalk signals of a high-speed signal transmission apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first shielding element of a shielding structure for crosstalk signals of a high-speed signal transmission apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second shielding element of the shielding structure for crosstalk signals of the high-speed signal transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third shielding element of the shielding structure for crosstalk signals of the high-speed signal transmission apparatus according to the first embodiment of the present invention;
fig. 6 is a schematic perspective view of a shielding structure for crosstalk signals according to a second embodiment of the present invention;
fig. 7 is a schematic perspective view of a shielding structure for crosstalk signals according to a third embodiment of the present invention.
Icon: 1-a high-speed signal transmission device; 2-a high-speed signal transmission device body; 21-a first guiding ramp; 22-a second guiding ramp; 3-a shielding structure; 31-an insulating base; 32-differential signal pair; 33-a shielding assembly; 331-a first shield; 3311-a first shield plate; 3312-first shield portion; 3313-first positioning ramp; 3314-first ground pin; 332-a second shield; 3321-a second shielding plate; 3322-second shield; 3323-third shield; 3324-fourth shield; 3325-second ground pin; 333-a third shield; 3331-third shielding plate; 3332-fifth shield; 3333-sixth shield; 3334-third ground pin; 3335-second positioning ramp; 4-shielding unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "inner", "outer", and the like, refer to an orientation or positional relationship as shown in the drawings, or as would be conventionally found in use of the products of the present invention, or as would be conventionally understood by one skilled in the art, and are used merely for convenience in describing and simplifying the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "open," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, fig. 1 is an exploded schematic view of a high-speed signal transmission device 1 according to an embodiment of the present invention. The high-speed signal transmission device 1 is mainly applied to large-scale communication equipment, and is equipment capable of transmitting differential signals or single-ended signals. The high-speed signal transmission device 1 comprises a high-speed signal transmission device main body 2 and a shielding structure 3 used for crosstalk signals, wherein the shielding structure 3 used for the crosstalk signals is detachably connected with the high-speed signal transmission device main body 2, and the shielding structure 3 used for the crosstalk signals has a positioning function and can be conveniently connected with the high-speed signal transmission device main body 2 in a matched mode. The high-speed signal transmission device 1 can save cost, improve economic benefit, has a simple structure, is easy to expand, and improves shielding effect.
Referring to fig. 2, fig. 2 is a schematic perspective view of a shielding structure 3 for crosstalk signals of a high-speed signal transmission apparatus 1 according to an embodiment of the present invention.
The shielding structure 3 for crosstalk signals includes an insulating base 31, a plurality of differential signal pairs 32 and a shielding assembly 33, the plurality of differential signal pairs 32 are sequentially disposed on the insulating base 31 at intervals, the shielding assembly 33 is connected with the insulating base 31, the shielding assembly 33 has a plurality of shielding units 4, the plurality of shielding units 4 surround the plurality of differential signal pairs 32 in a one-to-one correspondence manner, and the differential signal pairs 32 are used for being connected with a high-speed signal transmission device main body 2, so that the shielding assembly 33 positions the high-speed signal transmission device main body 2.
It should be noted that, the shielding assembly 33 can be easily expanded, so as to form more shielding units 4, each shielding unit 4 correspondingly surrounds one differential signal pair 32, and has high interference rejection capability and improved shielding effect. And shielding component 33 itself can also counterpoint high-speed signal transmission device main part 2 to save the cost that sets up a location casing extraordinarily, improve economic benefits, whole shielding structure 3 can reach simple compact effect.
The differential signal pair 32 is mainly used for transmitting differential signals and has strong anti-interference capability. The differential signal pairs 32 are of equal length, equal width, in close proximity and at the same level. Among them, the high-speed signal transmission device main body 2 is connected to a plurality of differential signal pairs 32.
The insulating base 31 is substantially rectangular, and is not limited to this shape, and may be any shape such as a square or a circle, and is not particularly limited herein, and only the differential signal pair 32 and the shield member 33 may be attached.
The shielding assembly 33 includes a first shielding member 331, a plurality of second shielding members 332 and a third shielding member 333, the first shielding member 331, the plurality of second shielding members 332 and the third shielding member 333 are all connected to the insulating base 31, the first shielding member 331 and the third shielding member 333 are disposed opposite to each other, and the plurality of second shielding members 332 are sequentially disposed between the first shielding member 331 and the third shielding member 333 at intervals to form a plurality of shielding units 4. In addition, the high-speed signal transmission device main body 2 can be positioned through the shielding assembly 33, and a positioning shell does not need to be additionally arranged, so that the whole structure is simplified, and the manufacturing cost is reduced.
It should be noted that the shielding component 33 is mainly used for shielding the differential signal pair 32. Specifically, the shielding units 4 of the shielding assembly 33 shield the differential signal pairs 32 in a one-to-one correspondence.
The first shield 331, the plurality of second shields 332, and the third shield 333 may be combined on an insulating substrate to form a plurality of shield units 4. The first shield 331, the second shield 332, and the third shield 333 may also be made longer to accommodate high-speed signal transmission device main bodies 2 of different sizes.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a first shielding element 331 of a shielding structure 3 for crosstalk signals of a high-speed signal transmission apparatus 1 according to an embodiment of the present invention.
The first shield 331 includes a first shield plate 3311 and a first shield part 3312 connected to each other, the first shield plate 3311 and the first shield part 3312 are both connected to the insulating base 31, and the first shield plate 3311 and the first shield part 3312 and the second shield 332 can form a shield unit 4.
The first shield 3312 is a bent portion of the first shield plate 3311, and the bent first shield 3312 plays a role of shielding, thereby saving a shield material, further reducing a production cost, and efficiently using the shield material per unit area.
The first shielding plate 3311 is provided with a first positioning inclined surface 3313, and the first positioning inclined surface 3313 is used for positioning with the high-speed signal transmission apparatus main body 2.
It should be noted that the first positioning inclined plane 3313 matches with the first guiding inclined plane 21 disposed on the high-speed signal transmission device main body 2, so as to facilitate the matching connection between the high-speed signal transmission device main body 2 and the shielding structure 3 for crosstalk signals.
The first shield 331 further includes a first ground pin 3314, the first ground pin 3314 is connected to the first shield plate 3311, and the first ground pin 3314 is away from the first positioning inclined surface 3313.
It should be noted that the first ground pins 3314 are used to derive the interference signal, and only two first ground pins 3314 are disposed on the first shielding plate 3311, so as to reduce the number of the first ground pins 3314, and also ensure the derivation of the interference signal, thereby reducing the cost.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a second shielding element 332 of the shielding structure 3 for crosstalk signals of the high-speed signal transmission apparatus 1 according to an embodiment of the present invention.
The second shielding member 332 includes a second shielding plate 3321 and second, third and fourth shielding portions 3322, 3323 and 3324 sequentially connected to the second shielding plate 3321, the second, third, fourth and second shielding plates 3322, 3323, 3324 and 3321 are all connected to the insulating base 31, the second and fourth shielding portions 3322 and 3324 are located at one side of the second shielding plate 3321, and the third shielding portion 3323 is located at the other side of the second shielding plate 3321.
The second shield portion 3322, the third shield portion 3323, and the fourth shield portion 3324 are bent portions of the first shield plate 3311, and the bent second shield portion 3322, the bent third shield portion 3323, and the bent fourth shield portion 3324 serve as a shield, thereby saving a shield material, further reducing a production cost, and efficiently using the shield material per unit area.
The second shield 332 further includes a second ground pin 3325, and the second ground pin 3325 is connected to the second shield plate 3321.
It should be noted that the second ground pin 3325 is used for deriving the interference signal, and only two second ground pins 3325 are disposed on the second shielding plate 3321, so as to reduce the number of the second ground pins 3325, ensure the derivation of the interference signal, and reduce the cost.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a third shielding element 333 of the shielding structure 3 for crosstalk signals of the high-speed signal transmission device 1 according to an embodiment of the present invention.
The third shield 333 includes a third shield plate 3331 and fifth and sixth shield parts 3332 and 3333 connected to the third shield plate 3331, the fifth, sixth and third shield parts 3332, 3333 and 3331 are all connected to the insulating base 31, the fifth and sixth shield parts 3332 and 3333 are located on the same side of the third shield plate 3331, and the fifth, sixth and third shield parts 3332, 3333, 3331 and the second shield 332 can form the shield unit 4.
The fifth shield part 3332 and the sixth shield part 3333 are bent portions of the first shield plate 3311, and the bent fifth shield part 3332 and sixth shield part 3333 serve to perform a shielding function, thereby saving a shielding material, further reducing a manufacturing cost, and efficiently using the shielding material per unit area.
The third shielding member 333 further includes a third ground pin 3334, the third ground pin 3334 is connected to the third shielding plate 3331, a second positioning inclined plane 3335 is disposed on the third shielding plate 3331, the second positioning inclined plane 3335 is used for positioning with the high speed signal transmission device main body 2, and the third ground pin 3334 is far away from the second positioning inclined plane 3335.
It should be noted that the second positioning inclined surface 3335 matches with the second guiding inclined surface 22 disposed on the high-speed signal transmission device main body 2, so as to facilitate the matching connection between the high-speed signal transmission device main body 2 and the shielding structure 3 for crosstalk signals.
It should be noted that the third ground pin 3334 is used for deriving an interference signal, and only two third ground pins 3334 are disposed on the third shielding plate 3331, so that the number of the third ground pins 3334 is reduced, the derivation of the interference signal can be ensured, and the cost is reduced.
It should be noted that the first ground pin 3314, the second ground pin 3325 and the third ground pin 3334 are all located on the same side of the insulating base 31, i.e., on a side of the insulating base 31 away from the high-speed signal transmission device body 2.
Specifically, the first shielding plate 3311, the first shielding part 3312, the second shielding plate 3321, the second shielding part 3322 and the fourth shielding part 3324 may enclose two shielding units 4, any adjacent two of the second shielding members 332 may enclose two shielding units 4, and the second shielding plate 3321, the third shielding part 3323, the third shielding plate 3331, the fifth shielding part 3332 and the sixth shielding part 3333 may enclose two shielding units 4. It is understood that the first shield 331, the second shield 332 and the third shield 333 may have more shield portions to form more shield units 4, which is not particularly limited herein.
The following describes an assembly process of the shielding structure 3 for crosstalk signals provided in the present embodiment:
the plurality of differential signal pairs 32 are sequentially disposed on the insulating base 31 at intervals, the first shield 331 is disposed on the insulating base 31 opposite to the third shield 333, and the plurality of second shields 332 are sequentially disposed between the first shield 331 and the third shield 333 at intervals, and a plurality of shield units 4 are formed, each shield unit 4 surrounding one differential signal pair 32. The first shield 331 is provided with a first positioning inclined surface 3313, and the third shield 333 is provided with a second positioning inclined surface 3335, so that the first positioning inclined surface 3313 and the second positioning inclined surface 3335 cooperate with the high-speed signal transmission apparatus main body 2.
Example two
Referring to fig. 6, fig. 6 is a schematic perspective view of a shielding structure 3 for crosstalk signals according to a second embodiment of the present invention.
The shielding assembly 33 may be a combination of U-shape and in-line shape, and a positioning slope is still provided on the side of the whole shielding assembly 33 to facilitate positioning with the high-speed signal transmission device main body 2. For other contents, please refer to embodiment one, which is not described herein again.
EXAMPLE III
Referring to fig. 7, fig. 7 is a schematic perspective view of a shielding structure 3 for crosstalk signals according to a third embodiment of the present invention.
The shielding assembly 33 can be swastika, and a positioning slope is still formed on the side of the whole shielding assembly 33 for positioning with the high speed signal transmission device main body 2. For other contents, please refer to embodiment one, which is not described herein again.
In summary, the shielding structure 3 and the high-speed signal transmission apparatus 1 for crosstalk signals provided by the present invention can be easily expanded by using the shielding assembly 33, so as to form more shielding units 4, each shielding unit 4 correspondingly surrounds one differential signal pair 32, and have higher anti-interference capability and improve the shielding effect. And shielding component 33 itself can also counterpoint high-speed signal transmission device main part 2 to save the cost that sets up a location casing extraordinarily, improve economic benefits, whole shielding structure 3 can reach simple compact effect.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A shielding structure for crosstalk signals is characterized by comprising an insulating base, a plurality of differential signal pairs and a shielding assembly, wherein the differential signal pairs are sequentially arranged on the insulating base at intervals, the shielding assembly is connected with the insulating base, the shielding assembly is provided with a plurality of shielding units, the shielding units correspondingly surround the differential signal pairs one by one, and the differential signal pairs are used for being connected with a high-speed signal transmission device main body so that the high-speed signal transmission device main body is positioned only through the shielding assembly;
the shielding assembly comprises a first shielding piece, a plurality of second shielding pieces and a third shielding piece, the first shielding piece, the plurality of second shielding pieces and the third shielding piece are all connected with the insulating base, the first shielding piece and the third shielding piece are arranged oppositely, and the plurality of second shielding pieces are sequentially arranged between the first shielding piece and the third shielding piece at intervals to form a plurality of shielding units; the first shielding piece comprises a first shielding plate and a first shielding part which are connected with each other, the first shielding plate and the first shielding part are both connected with the insulating base, and the first shielding plate, the first shielding part and the second shielding piece can form the shielding unit;
the second shielding piece comprises a second shielding plate, and a second shielding part, a third shielding part and a fourth shielding part which are sequentially connected with the second shielding plate, wherein the second shielding part, the third shielding part, the fourth shielding part and the second shielding plate are all connected with the insulating base, the second shielding part and the fourth shielding part are positioned on one side of the second shielding plate, and the third shielding part is positioned on the other side of the second shielding plate;
wherein the first shielding part is a bent part of the first shielding plate; the second shielding part, the third shielding part and the fourth shielding part are bent parts on the second shielding plate;
the second shield further includes a second ground pin, the second ground pin being connected to the second shield plate.
2. The shielding structure for crosstalk signals according to claim 1, wherein a first positioning inclined plane is disposed on the first shielding plate, and the first positioning inclined plane is used for positioning with the high-speed signal transmission device main body.
3. The shielding structure for crosstalk signals according to claim 2, wherein the first shielding element further comprises a first ground pin, the first ground pin is connected to the first shielding plate, and the first ground pin is far from the first positioning inclined surface.
4. The shielding structure for crosstalk signals according to claim 1, wherein the third shielding member includes a third shielding plate, and a fifth shielding portion and a sixth shielding portion connected to the third shielding plate, the fifth shielding portion, the sixth shielding portion, and the third shielding plate are all connected to the insulating base, the fifth shielding portion and the sixth shielding portion are located on the same side of the third shielding plate, and the fifth shielding portion, the sixth shielding portion, the third shielding plate, and the second shielding member can form the shielding unit.
5. The shielding structure for crosstalk signals according to claim 4, wherein the third shielding member further includes a third grounding pin, the third grounding pin is connected to the third shielding plate, a second positioning inclined plane is disposed on the third shielding plate, the second positioning inclined plane is used for positioning with the high-speed signal transmission device body, and the third grounding pin is far away from the second positioning inclined plane.
6. A high-speed signal transmission device comprising a high-speed signal transmission device main body and the shielding structure for crosstalk signals according to any one of claims 1 to 5, wherein the high-speed signal transmission device main body is connected to a plurality of the differential signal pairs, and the high-speed signal transmission device main body can be positioned by the shielding member.
CN201910108070.1A 2019-02-02 2019-02-02 Shielding structure for crosstalk signal and high-speed signal transmission device Active CN109861037B (en)

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CN215299724U (en) * 2021-02-09 2021-12-24 中航光电科技股份有限公司 Shielding plate connecting conductor
CN116191132A (en) * 2021-11-26 2023-05-30 华为技术有限公司 Female end connector, male end connector and connector assembly
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CN115753912B (en) * 2022-10-27 2023-05-26 青岛众瑞智能仪器股份有限公司 Analysis device for microbial growth

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