CN115755288A - Quick blind-mating interconnection structure for optical signals of front and rear plug-ins - Google Patents
Quick blind-mating interconnection structure for optical signals of front and rear plug-ins Download PDFInfo
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- CN115755288A CN115755288A CN202211285464.2A CN202211285464A CN115755288A CN 115755288 A CN115755288 A CN 115755288A CN 202211285464 A CN202211285464 A CN 202211285464A CN 115755288 A CN115755288 A CN 115755288A
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Abstract
The invention relates to a front and back plug-in optical signal quick blind-mating interconnection structure, which comprises a front plug-in card optical installation module, a back board optical installation module, a two-way MT contact element and a back plug-in card optical installation module, wherein the front plug-in card optical installation module is installed on a front plug-in card; the front plug-in optical installation module for the front plug-in card is internally provided with a front plug-in optical cable contact element, the rear plug-in optical cable contact element is internally provided with a rear plug-in optical cable contact element, the two-way MT contact element is arranged in the optical installation module for the back plate, and two ends of the two-way MT contact element are respectively interconnected with the front plug-in optical cable contact element and the rear plug-in optical cable contact element; the light installation module for the front plug board card and the light installation module for the rear plug board card are both in blind insertion with the light installation module for the back board through the guide structure I. The invention solves the problems of poor maintainability, poor reliability and the like caused by the frequent disassembly and assembly of the ribbon optical cable MT and the optical switching connector in the prior art, and realizes the quick blind-plug interconnection of optical signals of the front plug-in unit and the rear plug-in unit.
Description
Technical Field
The invention belongs to the technical field of connectors, and particularly relates to a front and back plug-in optical signal quick blind-plug interconnection structure based on a VITA framework.
Background
The design requirements of the rear plug-in are defined in detail in the VITA46.10 VPX rear plug-in module standard, and the design requirements relate to node definition, daughter board external dimension, connector selection and the like, but the electrical definition only explains the full electric module, and does not specify a radio frequency module (or an optical module).
When a rear plug-in is installed inside a current VPX chassis based on the VITA architecture, as shown in fig. 1 and 2, optical signals led out from a front plug-in card to a corresponding rear plug-in card are often connected by using an optical cable. The disadvantages of this form of interconnection are:
1) In the current interconnection form, since an optical fiber (MT ribbon cable) is directly thrown out from the rear portion of the backplane and then connected to the optical add-on connector of the backplane card, the optical fiber ribbon cable MT and the optical add-on connector need to be frequently disassembled and assembled each time the backplane card is plugged into or pulled out of the backplane assembly, and thus, the maintainability is poor;
2) Due to the limitation of the interconnection form, when the optical cable MT is repeatedly disassembled and assembled, the optical cable MT is inevitably pulled and repeatedly bent, and because of the fragility of the optical cable MT, the risk of influencing the reliability of optical signals exists;
3) Due to the fact that the optical cables on the rear plug board card need to be disassembled and assembled, when the rear plug board card cold plate structure is designed, the space for disassembling and assembling the optical cables needs to be considered, corresponding holes are formed for avoiding, and therefore the heat dissipation performance of the rear plug board card can be influenced to a certain degree.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a front-rear plug-in optical signal quick blind-plug interconnection structure, which aims to solve the problems of poor maintainability, poor optical signal reliability and the like caused by the need of frequently disassembling and assembling a ribbon optical cable MT and an optical switching connector in the prior art, and realize the quick blind-plug interconnection of the optical signals of the front plug-in and the rear plug-in.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The invention provides a front and back plug-in optical signal quick blind-plug interconnection structure, which comprises a front plug-in card optical installation module, a back board optical installation module, a two-way MT contact element and a back plug-in card optical installation module, wherein the front plug-in card optical installation module is arranged at the opposite plug-in end of a front plug-in card, the back board optical installation module is arranged on a back board, and the back plug-in card optical installation module is arranged at the opposite plug-in end of a back plug-in card; the back plate is arranged between the front plug-in board card and the rear plug-in board card, a front plug-in optical cable and a front plug-in optical cable contact element interconnected with the front plug-in optical cable are assembled in the front plug-in board optical installation module, a rear plug-in optical cable and a rear plug-in optical cable contact element interconnected with the rear plug-in optical cable are assembled in the rear plug-in board optical installation module, the two-way MT contact element is installed in the back plate optical installation module, one end of the two-way MT contact element is interconnected with the front plug-in optical cable contact element, and the other end of the two-way MT contact element is interconnected with the rear plug-in optical cable contact element; when the front plug board card and the rear plug board card are plugged into the back board, the optical installation module for the front plug board card and the optical installation module for the rear plug board card are plugged into the back board in a blind mode through the optical installation module for the guide structure I and the back board.
Further, the light installation module for the backboard comprises a shell I and a shell II, wherein the shell I and the shell II are respectively fixedly installed on two side surfaces of the backboard; and two-way MT contact piece mounting holes are formed in the back plate mounting surfaces of the shell I and the shell II and the back plate.
Furthermore, the shell I and the shell II are quickly and accurately installed on the back plate through the guide structure II. The guiding structure II comprises a guiding pin or a guiding column which is arranged on the back plate mounting surfaces of the shell I and the shell II, and correspondingly, a guiding hole matched with the guiding pin or the guiding column is arranged on the back plate.
Furthermore, the guide structure I comprises a guide pin and a guide sleeve structure, the guide pin is arranged on the other side surface of the mounting surface of the back plate of the shell I and the shell II, the guide sleeve structure is correspondingly arranged at the opposite plugging ends of the optical installation module for the front plugboard card and the optical installation module for the rear plugboard card; or the guide sleeve structure is arranged on the other side surface of the back plate mounting surface of the shell I and the shell II, and the guide pins are correspondingly arranged at the opposite plugging ends of the front flashboard card optical mounting module and the rear flashboard card optical mounting module.
Furthermore, the front inserting optical cable contact element and the rear inserting optical cable contact element have the same structure and are MT/S contact elements.
Furthermore, the optical installation module for the rear plug board card comprises a plug shell and a plug pressing plate, wherein the plug pressing plate is fixedly installed at one end of the plug shell through a loose screw, and the rear plug optical cable contact element is assembled in the other end of the plug shell.
Furthermore, rear-plug optical cable mounting holes are formed in the plug shell and the plug pressing plate, a chute structure is further arranged on the plug pressing plate, rear-plug optical cables are installed in the rear-plug optical cable mounting holes from the chute structure and are interconnected with rear-plug optical cable contact elements, and the tail ends of the rear-plug optical cables are interconnected with an optical switching connector mounted on the rear plug board card through MT contact elements.
Furthermore, the bottom of the plug shell is provided with a guide pillar structure, the rear plug board card is also provided with a corresponding guide sleeve or guide hole, and the rear plug board card is matched with the guide sleeve or guide hole to guide rapid assembly when being installed on the rear plug board card by the optical installation module.
Furthermore, the optical installation module for the front plugboard card and the optical installation module for the rear plugboard card have the same appearance and internal structure.
Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the quick blind-plugging interconnection structure for the front and rear plug-in optical signals can achieve considerable technical progress and practicability, has wide utilization value, and at least has the following advantages:
(1) According to the technical scheme, when the front plug board card and the rear plug board card are oppositely plugged with the back plate, the front plug optical cable contact element in the optical installation module for the front plug board card is oppositely plugged with one end of the double-pass MT contact element in the optical installation module for the back plate, the rear plug optical cable contact element in the optical installation module for the rear plug board card is oppositely plugged with the other end of the double-pass MT contact element in the optical installation module for the back plate, so that the opposite plugging interconnection of optical signals of the front plug board card and the rear plug board card is realized, and finally, the external switching and output of the optical signals are realized through the optical switching connector.
(2) By adopting the technical scheme of the invention, when the front plug board card and the rear plug board card are required to be plugged in and pulled out of the back board assembly, only the optical installation module for the front plug board card, the optical installation module for the rear plug board card and the optical installation module for the back board are required to be plugged in and pulled out, and the optical cable is not required to be disassembled and assembled, so that the maintainability of the equipment is greatly improved, and the problems of poor maintainability, optical signal stability and reliability caused by frequent disassembling and assembling of the optical cable in the prior art are avoided. In addition, the invention does not need to consider the space required by dismounting the optical cable, thereby improving the heat dissipation of the module.
(3) According to the invention, the guide sleeve structures are arranged at the opposite plugging end of the optical installation module for the front plug board card and the opposite plugging end of the optical installation module for the rear plug board card, and the corresponding guide pins are arranged in the two cavities of the optical installation module for the rear board, so that the front plug board card and the rear plug board card have a blind plugging function when being plugged with the rear board, and the plugging efficiency and convenience are greatly improved.
(4) The invention realizes the engineering application of the intercommunication and interconnection of the optical signals of the front plug-in and the rear plug-in under the condition that the thickness of the back plate is 4mm by a novel optical installation module and a corresponding optical contact element.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of an interconnection structure in a state where a front interposer card and a rear interposer card are plugged in the prior art.
Fig. 2 is a schematic diagram of an interconnection structure in a state where a front interposer card and a rear interposer card are separated in the prior art.
Fig. 3 is a schematic diagram of a front-to-back card optical signal fast blind-mate interconnect structure of the present invention.
Fig. 4 is a partially enlarged view of fig. 3.
Fig. 5 is a schematic diagram of an interconnection structure of the front board card and the rear board card in an engaged state according to the present invention.
Fig. 6 is a schematic diagram of an interconnection structure of the front board card and the rear board card in a separated state according to the present invention.
Fig. 7 is a composition diagram of a light installation module for a back plate in the present invention.
Fig. 8 is a profile view of a dual pass MT contact for a backplane.
Fig. 9 is an external view of the optical mounting module for a rear card, in which (a) is a schematic view before the plug housing is assembled with the plug press plate, and (b) is a schematic view after the plug housing is assembled with the plug press plate.
[ description of elements and symbols ]
1: a front interposer card; 6: a rear plug board card;
2: the front plug board card uses the optical installation module; 7: the rear plug board card uses the optical installation module;
3: a back plate; 8: a front plug optical cable;
4: a light installation module for a back plate; 9: an optical module;
5: a two-way MT contact; 10: inserting an optical cable at the back;
11: a rear plug optical cable contact; 21: a plug pressing plate;
12: a shell I; 22: a captive screw;
13: a shell II; 23: rear-inserted optical cable mounting holes; '
14: a screw hole I; 24: a chute structure;
15: a screw hole II; 25: a screw;
16: a guide structure; 26: a guide post structure;
17: a bi-pass MT contact mounting hole; 27: an optical switch connector;
18: a guide pin; 28: optical installation module pair for rear plug board card
19: a guide sleeve structure; inserting end;
20: a plug housing; 29: a backboard mounting surface of a shell I.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, shall fall within the scope of protection of the present invention.
In order to improve the quick blind-mating interconnection of optical signals of the front plug-in board card and the rear plug-in board card and improve the product maintainability, the invention provides a quick blind-mating interconnection structure of optical signals of the front plug-in board and the rear plug-in board, as shown in fig. 3, the structure at least comprises a front plug-in board optical installation module 2 installed at the opposite plugging end of a front plug-in board card 1, a rear board optical installation module 4 installed on a rear board 3, a dual-pass MT contact element 5 installed in the rear board optical installation module, and a rear plug-in board optical installation module 7 installed at the opposite plugging end of a rear plug-in board card 6. The opposite plugging end refers to one end of the front plug board card or the rear plug board card which is oppositely plugged with the back board. The back board is arranged between the front board card and the back board card, a front inserting optical cable 8 (namely a front inserting piece) and a front inserting optical cable contact piece are assembled in the front board card optical installation module, a back inserting optical cable 10 (namely a back inserting piece) and a back inserting optical cable contact piece 11 are assembled in the back board card optical installation module, the two-way MT contact piece is installed in the back board card optical installation module and can be repeatedly taken and disassembled, one end of the two-way MT contact piece is interconnected with the front inserting optical cable contact piece, and the other end of the two-way MT contact piece is interconnected with the back inserting optical cable contact piece.
The optical installation module for the front plug board card completely borrows a module RPB4F12Q meeting VITA66 standards, two bi-pass MT contact elements can be installed in the optical installation module for the back board, two front plug optical cables and two front plug optical cable contact elements are installed in the optical installation module for the front plug board card, and two rear plug optical cables and two rear plug optical cable contact elements are installed in the optical installation module for the rear plug board card. Each front plug optical cable is connected with a corresponding front plug optical cable contact element, and each rear plug optical cable is connected with a corresponding rear plug optical cable contact element. The front plug cable contact and the rear plug cable contact are identical, and in one embodiment, both the front plug cable contact and the rear plug cable contact are MT/S contacts.
As shown in fig. 7, the optical mounting module for a backplane includes a housing i 12 and a housing ii 13, and the housing i and the housing ii are respectively fixed on two sides of the backplane. The shell I and the shell II respectively comprise cavities for accommodating the front plug board card optical installation module opposite-plugging end and the rear plug board card optical installation module opposite-plugging end 28.
In one embodiment, the housing I is provided with screw holes I14 in the back plate mounting surface 29 for mounting screws by which the housing I is fixed to the back plate side. Correspondingly, a screw hole II 15 is formed in the back plate mounting surface of the shell II, and the shell II is fixed to the other side of the back plate through a screw.
In another embodiment, the housing I is further provided with a guide structure 16 on the backplane mounting surface, by which the housing I can be quickly and accurately mounted to the backplane. Correspondingly, a guide structure for guiding the quick and accurate installation of the shell 1 is also arranged on the shell II.
In one embodiment, the guiding structure may be a guide pin or a guide pillar, and correspondingly, a guide hole matched with the guide pin or the guide pillar is arranged on the back plate, and the housing i and the housing ii are rapidly and accurately mounted on two sides of the back plate through the guide pin or the guide pillar and the guide hole.
And the back plate mounting surfaces of the shell I and the shell II and the back plate are respectively provided with a bi-pass MT contact mounting hole 17, one end of each bi-pass MT contact is assembled in the mounting hole, the bi-pass MT contact is connected with the corresponding front-inserted optical cable contact, and the other end of each bi-pass MT contact is connected with the corresponding rear-inserted optical cable contact.
In another embodiment, a guide pin 18 is further disposed on the other side of the back plate mounting surface of the housing i and the housing ii, and correspondingly, a guide sleeve structure 19 is further disposed at the opposite insertion end of the front board card optical mounting module and the back board card optical mounting module, and when the front board card and the back board card are inserted oppositely with the back plate assembly, the front board card and the back board card can be guided to be quickly inserted oppositely with the back plate assembly through the cooperation of the guide pin and the guide sleeve structure, so that blind insertion is realized.
The shape of the double-pass MT contact element is shown in FIG. 8, the double-pass MT contact element adopts the existing MT contact element structure design, only the double-pass design is adopted, and MT connectors and guide pins are arranged at two ends of the double-pass MT contact element and are used for being respectively interconnected with the front-inserted optical cable contact element and the rear-inserted optical cable contact element.
The optical installation module for the rear plug board card has the appearance shown in fig. 9, and comprises a plug shell 20 and a plug pressing plate 21, wherein the plug pressing plate is fixedly installed at one end of the plug shell through a loose screw 22, the other end of the plug shell (namely the opposite insertion end of the optical installation module for the rear plug board card) is provided with a guide sleeve structure 19 which is used for being matched with a guide pin 18 on the optical installation module for the back board to guide opposite insertion, and the optical cable contact for the rear insertion is assembled in the opposite insertion end of the plug shell. Plug shell and plug clamp plate are all provided with back and insert optical cable mounting hole 23, and still are provided with chute structure 24 on the plug clamp plate, insert the optical cable after the back and insert the optical cable mounting hole after passing from chute structure afterwards. The MT contact at the tail end of the rear patch cable is interconnected with an optical switch connector mounted on the rear patch board card.
The front-plug optical cable and the rear-plug optical cable are MT-type optical cables.
In one embodiment, the chute structure is inclined at an angle of 45 °, but the invention is not limited thereto.
Further, the optical mounting module for the rear card is mounted and fixed on the rear card by screws 25 at the bottom thereof, as shown in fig. 9 (b).
Further, in another embodiment, the bottom of the plug housing of the optical mounting module for the rear card is further provided with a guide pillar structure 26, and correspondingly, the rear card is further provided with a guide sleeve or a guide hole, so that the optical mounting module for the rear card is mounted on the rear card by guiding the quick assembly through the cooperation of the guide pillar and the guide sleeve or the guide hole.
The optical installation module for the front flashboard card and the optical installation module for the rear flashboard card have the same appearance and internal structure, and are not described again. In the embodiment shown in the drawings, the front plug cables are interconnected at one end with front plug cable contacts and at the other end with optical modules 9 on the front plug card.
According to the technical scheme, under the condition that the thickness of the back plate is 4mm, the front plug-in optical signal and the rear plug-in optical signal are quickly connected in a blind-plugging mode, the maintainability of a product and the reliability of optical signal transmission are improved, the problem that the stability and the reliability of the optical signal are reduced due to frequent disassembly and assembly of the optical cable in the prior art is solved, the space required by disassembly and assembly of the optical cable does not need to be considered, and the heat dissipation performance of a module is improved. The blind plugging device has the blind plugging function, greatly improves the plugging efficiency and convenience, and has certain popularization value.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.
Claims (10)
1. The utility model provides a quick blind grafting interconnect structure of plug-in components optical signal around, its characterized in that: the optical installation module comprises a front plugboard card optical installation module (2) arranged at the opposite insertion end of a front plugboard card (1), a backboard optical installation module (4) arranged on a backboard (3), a bi-pass MT contact element (5) and a rear plugboard card optical installation module (7) arranged at the opposite insertion end of a rear plugboard card (6); the back plate is arranged between the front plug-in board card and the rear plug-in board card, a front plug-in optical cable (8) and a front plug-in optical cable contact element interconnected with the front plug-in optical cable are assembled in the front plug-in board card optical installation module, a rear plug-in optical cable (10) and a rear plug-in optical cable contact element (11) interconnected with the rear plug-in optical cable are assembled in the rear plug-in board card optical installation module, the dual-pass MT contact element is installed in the back plate optical installation module, one end of the dual-pass MT contact element is interconnected with the front plug-in optical cable contact element, and the other end of the dual-pass MT contact element is interconnected with the rear plug-in optical cable contact element; when the front plug board card and the rear plug board card are oppositely plugged with the back board, the light installation module for the front plug board card and the light installation module for the rear plug board card are both plugged with the light installation module for the back board through the guide structure I in a blind mode;
the light installation module for the backboard comprises a shell I (12) and a shell II (13), wherein the shell I and the shell II are respectively fixed on two side surfaces of the backboard; the shell I and the shell II further respectively comprise cavities for accommodating the optical installation module opposite plugging ends for the front plug board card and the optical installation module opposite plugging ends for the rear plug board card.
2. A front and back plug-in optical signal quick blind-plug interconnection structure according to claim 1, wherein the back board mounting surfaces of the housing I and the housing II and the back board are provided with two-way MT contact mounting holes (17).
3. A front-rear interposer optical signal fast blind-mate interconnect structure according to claim 1, wherein: casing I and casing II are installed on the backplate through guide structure II fast accurately.
4. A front-rear interposer optical signal fast blind-mate interconnect structure according to claim 3, wherein: the guiding structure II comprises a guiding pin or a guiding column which is arranged on the back plate mounting surfaces of the shell I and the shell II, and correspondingly, a guiding hole matched with the guiding pin or the guiding column is arranged on the back plate.
5. A front-rear interposer optical signal fast blind-mate interconnect structure according to claim 1, wherein: the guide structure I comprises a guide pin (18) and a guide sleeve structure (19), the guide pin (18) is arranged on the other side surface of the back plate mounting surface of the shell I and the shell II, and the guide sleeve structure is correspondingly arranged at the opposite plugging ends of the optical mounting module for the front plug board card and the optical mounting module for the rear plug board card; or the guide sleeve structure is arranged on the other side surface of the back plate mounting surface of the shell I and the shell II, and the guide pins are correspondingly arranged at the opposite plugging ends of the front flashboard card optical mounting module and the rear flashboard card optical mounting module.
6. A front-rear interposer optical signal fast blind-mate interconnect structure according to any one of claims 1-5, wherein: the front plug optical cable contact element and the rear plug optical cable contact element have the same structure and are MT/S contact elements.
7. A front-rear interposer optical signal fast blind-mate interconnect structure according to claim 1, wherein: the optical installation module for the rear plug board card comprises a plug shell (20) and a plug pressing plate (21), wherein the plug pressing plate is fixedly installed at one end of the plug shell through a release screw (22), and the rear plug optical cable contact element (11) is assembled in the other end of the plug shell.
8. A front-rear interposer optical signal fast blind-mate interconnect structure according to claim 7, wherein: rear plug optical cable mounting holes (23) are formed in the plug shell and the plug pressing plate, a chute structure (24) is further arranged on the plug pressing plate, rear plug optical cables are installed in the rear plug optical cable mounting holes from the chute structure and are interconnected with rear plug optical cable contact elements, and the tail ends of the rear plug optical cables are interconnected with an optical switching connector installed on the rear plug board card through MT contact elements.
9. The front-rear interposer optical signal fast blind-mate interconnect structure of claim 7, wherein: the bottom of the plug shell is provided with a guide pillar structure (26), the rear plug board card is also provided with a corresponding guide sleeve or guide hole, and the rear plug board card is matched with the guide sleeve or the guide hole to guide rapid assembly through the guide pillar structure when the optical installation module for the rear plug board card is installed on the rear plug board card.
10. The front-rear interposer optical signal fast blind-mate interconnect structure of claim 1 or 7, wherein: the optical installation module for the front plugboard card and the optical installation module for the rear plugboard card have the same appearance and internal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211285464.2A CN115755288A (en) | 2022-10-20 | 2022-10-20 | Quick blind-mating interconnection structure for optical signals of front and rear plug-ins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211285464.2A CN115755288A (en) | 2022-10-20 | 2022-10-20 | Quick blind-mating interconnection structure for optical signals of front and rear plug-ins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115755288A true CN115755288A (en) | 2023-03-07 |
Family
ID=85352320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211285464.2A Pending CN115755288A (en) | 2022-10-20 | 2022-10-20 | Quick blind-mating interconnection structure for optical signals of front and rear plug-ins |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115755288A (en) |
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2022
- 2022-10-20 CN CN202211285464.2A patent/CN115755288A/en active Pending
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