CN212905582U - Optical communication interface assembly - Google Patents
Optical communication interface assembly Download PDFInfo
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- CN212905582U CN212905582U CN202020919382.9U CN202020919382U CN212905582U CN 212905582 U CN212905582 U CN 212905582U CN 202020919382 U CN202020919382 U CN 202020919382U CN 212905582 U CN212905582 U CN 212905582U
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- circuit board
- printed circuit
- optical device
- signal output
- optical
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Abstract
The utility model provides an optical communication interface assembly, including signal output part and optical device, signal output part is connected with the optical device electricity, and it includes: the bottom cover and the face cover surround the optical device and the signal output end, and the joint of the bottom cover and the face cover is coated with an electromagnetic shielding material; the handle is fixed with the bottom cover at one end of the bottom cover; the optical device and the signal output end are carried on the printed circuit board and are respectively close to two ends of the printed circuit board; the optical device and the signal output end are located on different horizontal planes, and the horizontal plane where the signal output end is located is higher than the horizontal plane where the optical device is located. The electromagnetic shielding material is coated at the joint of the bottom cover and the face cover, so that a better electromagnetic shielding effect can be achieved even if a shell made of a metal material is not used, and further the optical device and the signal output end are positioned on different horizontal planes, so that the coating of the electromagnetic shielding material and the design of the coating position and the shape of the electromagnetic shielding material are facilitated.
Description
Technical Field
The utility model relates to an optical communication interface module.
Background
Currently, in an optical communication interface module, an optoelectronic transmitter converts a received electrical signal into an optical signal and then transmits the optical signal. The photoelectric receiver converts the received optical signal into an electrical signal and then transmits the electrical signal. The existing optical communication interface assembly is manufactured by inserting pins and posts into through holes of a printed circuit board and then soldering the pins and posts on the printed circuit board, or inserting a transceiver into a socket which is sequentially mounted on the printed circuit board. Since electromagnetic interference may be generated between communication devices during optical communication, resulting in signal loss or distortion, the optical communication interface generally needs to use some means to shield the electromagnetic interference.
Document 1 (chinese patent, publication No. CN104730656A) discloses an optical module including a metal case and an optical component enclosed in the metal case, which is characterized by including: the circuit board interface is arranged on the metal shell; the circuit board is inserted into the metal shell through a circuit board interface; the circuit board is electrically connected with the optical assembly, and the circuit board interface is fixed with the circuit board through welding. And a metal layer is arranged at the position corresponding to the circuit board interface, and the circuit board interface is welded with the metal layer in a sealing way. The corresponding position of the circuit board and the circuit board interface is provided with at least one reinforced layer, and the circuit board interface and the reinforced layer are welded in a sealing way. The first reinforcing layer and/or the second reinforcing layer are/is a hard board combined with the soft board, and a metal layer welded with the metal shell is arranged at the position where the first reinforcing layer and/or the second reinforcing layer are connected with the interface of the circuit board.
That is, in the solution of document 1, it is necessary to provide a structure such as a large number of metal layers and plates on the optical communication interface to shield the electromagnetic interference. However, the metal layer and plate structure have a disadvantage that metal is easily oxidized, and it is generally necessary to perform oxidation prevention treatment on the metal portion in order to avoid oxidation problems due to long-term use. The use of the metal material itself also causes the cost of the apparatus to increase, making the cost problem difficult to overcome.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to use the metallic material shielding to prevent that electromagnetic interference from leading to the too high defect of cost in order to overcome current optical communication interface module, provide a lower optical communication interface module of cost.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
an optical communication interface module, comprising a signal output terminal and an optical device, wherein the signal output terminal is electrically connected to the optical device, the optical communication interface module is characterized in that it comprises: the bottom cover and the face cover surround the optical device and the signal output end, and the joint of the bottom cover and the face cover is coated with an electromagnetic shielding material; the handle is fixed with the bottom cover at one end of the bottom cover; the number of the optical devices is at least one; the optical device and the signal output end are carried on a printed circuit board and are respectively close to two ends of the printed circuit board; the optical device and the signal output end are located on different horizontal planes, and the horizontal plane where the signal output end is located is higher than the horizontal plane where the optical device is located.
Preferably, the bottom cover is of a cuboid box-shaped structure and comprises a flat bottom cover bottom and a plurality of side walls perpendicular to the bottom cover bottom, and the side walls are equal in height.
Preferably, the number of the optical devices is at least two, and the two optical devices are both located on the same side of the printed circuit board.
Preferably, the optical device includes a light emitting component and a light receiving component.
Preferably, the printed circuit board includes two printed circuit board layers with different heights and parallel to each other, the optical device and the signal output terminal are respectively located on the two printed circuit board layers, and the height of the printed circuit board layer on which the optical device is located is lower than that of the printed circuit board layer on which the signal output terminal is located.
Preferably, the printed circuit board layer provided with the optical device and the printed circuit board layer provided with the signal output end are electrically connected through a columnar conductor.
Preferably, the printed circuit board layer provided with the optical device and the printed circuit board layer provided with the signal output end are electrically connected through a conductive through hole.
Preferably, the distance from the printed circuit board layer provided with the optical device to the bottom of the bottom cover is smaller than the distance from the printed circuit board layer provided with the optical device to the face cover.
Preferably, the distance from the printed circuit board layer provided with the optical device to the bottom of the bottom cover is less than or equal to half of the distance from the printed circuit board layer provided with the optical device to the face cover.
The utility model discloses an actively advance the effect and lie in: the electromagnetic shielding material is coated at the joint of the bottom cover and the face cover, so that a better electromagnetic shielding effect can be achieved even if a shell made of a metal material is not used, and further, the optical device and the signal output end are positioned on different horizontal planes, so that the shape of the joint of the bottom cover and the face cover has a larger design space, and the electromagnetic shielding material is favorably coated and the design of the coating position and the shape of the electromagnetic shielding material is favorably realized.
Drawings
Fig. 1 is a schematic structural diagram of an optical communication interface assembly according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the optical communication interface module according to the preferred embodiment of the present invention with the cover removed.
Fig. 3 is a schematic structural diagram of a printed circuit board according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an optical communication interface assembly of the present embodiment, fig. 2 is a schematic structural diagram of the optical communication interface assembly of the present embodiment with a cover removed, and fig. 3 is a schematic structural diagram of a printed circuit board of the present embodiment. As shown in fig. 1 to 3, the optical communication interface assembly 100 according to the present embodiment includes a signal output end 11, an optical device, a bottom cover 20, a face cover 40, and a handle 30.
The signal output terminal 11 is electrically connected to the optical device. The optical device has a function of interconversion between an electrical signal and an optical signal.
The bottom cover 20 and the face cover 40 surround the optical device and the signal output end 11, and the joint of the bottom cover 20 and the face cover 40 is coated with an electromagnetic shielding material; the handle 30 is fixed with the bottom cover 20 at one end of the bottom cover 20; the number of the optical devices is at least one; the optical device and the signal output end 11 are carried on the printed circuit board and are respectively close to two ends of the printed circuit board; the optical device and the signal output end 11 are located on different horizontal planes, and the horizontal plane of the signal output end 11 is higher than the horizontal plane of the optical device.
Since the position of the signal output end 11 is determined according to the common industry standardization rule, the position cannot be changed, and the optical device and the signal output end 11 are positioned on different horizontal planes, the selection space of the optical device can be larger. Even if a bulky optical device is used, the bottom cover 20 and the face cover 40 can accommodate the relevant components including the optical device only by a relatively regular joining shape. If the optical device and the signal output terminal 11 are located on the same horizontal plane, when the volume of the optical device reaches a certain size, the shapes of the bottom cover and the front cover must be changed (e.g. more bending undulations are formed) to adapt to the optical device, and thus, the electromagnetic shielding material applied to the joint of the bottom cover and the front cover must also change positions along with the shapes, which may cause a break point or may be disadvantageous to the applied shape of the electromagnetic shielding material.
In addition, since the electromagnetic shielding is mainly dependent on the coating of the electromagnetic shielding material, the bottom cover and the face cover can both use resin or other light and lower-cost polymeric materials, and compared with the metal shell in the prior art, the production cost can be greatly reduced.
Meanwhile, the bottom cover and the face cover made of the polymer material are more beneficial to shaping so as to obtain a better coating shape of the electromagnetic shielding material.
The bottom cover 20 is a rectangular box-shaped structure, and comprises a bottom of the bottom cover 20 in a flat plate shape and a plurality of side walls perpendicular to the bottom of the bottom cover 20, and the height of the side walls is equal. The bottom cover 20 and the face cover 40 are fixed by bolts.
Referring to fig. 2, the number of the optical devices is at least two, and both of the optical devices are located on the same side of the printed circuit board. Specifically, the optical device includes a light receiving member 121, and a light emitting member 122.
The light receiving device 121 may be a ROSA (Receiver Optical Subassembly). The optical signal can be converted into an electric signal (O/E conversion), and the main performance indexes are sensitivity (Sen) and the like. The light emitting device 122 may be a TOSA (Transmitter Optical Subassembly) that converts an electrical signal into an Optical signal (E/O conversion), and the performance index may be Optical power, a threshold, or the like.
The printed circuit board includes a printed circuit board layer 101 and a printed circuit board layer 102 (refer to fig. 3) which are different in height and parallel to each other. The light receiving module 121, the light emitting module 122, and the signal output terminal 11, which are optical devices, are respectively located on two printed circuit board layers, and the printed circuit board layer 102 provided with the optical devices is lower in height than the printed circuit board layer 101 provided with the signal output terminal 11.
In this embodiment, the printed circuit board layer 102 provided with the optical device and the printed circuit board layer 101 provided with the signal output terminal 11 are electrically connected by the columnar conductor 103.
Specifically, the printed circuit board layer 101 may be provided with a notch to expose the devices (the light receiving element 121 and/or the light emitting element 122) on the printed circuit board layer 102.
In other embodiments, the printed circuit board layer 102 provided with the optical device and the printed circuit board layer 101 provided with the signal output terminal 11 may be electrically connected through a conductive through hole.
The distance of the printed circuit board layer 102 provided with the optical device to the bottom of the bottom cover 20 is smaller than the distance thereof to the face cover 40.
In the present embodiment, the distance from the printed circuit board layer 102 provided with the optical device to the bottom of the bottom cover 20 is less than or equal to one-half of the distance from the bottom cover 40. Specifically, the printed circuit board layer 102 is provided to one third of the height of the side wall of the bottom cover 20.
The height of the printed circuit board layer 102 is set to allow the junction between the bottom cover and the front cover to be formed regularly, for example, in the embodiment, to have a smooth junction shape, while surrounding the formed space with the bottom cover and the front cover, which facilitates the coating of the electromagnetic shielding material.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (9)
1. An optical communication interface module, comprising a signal output terminal and an optical device, wherein the signal output terminal is electrically connected to the optical device, the optical communication interface module comprising:
the bottom cover and the face cover surround the optical device and the signal output end, and the joint of the bottom cover and the face cover is coated with an electromagnetic shielding material;
the handle is fixed with the bottom cover at one end of the bottom cover;
the number of the optical devices is at least one;
the optical device and the signal output end are carried on a printed circuit board and are respectively close to two ends of the printed circuit board;
the optical device and the signal output end are located on different horizontal planes, and the horizontal plane where the signal output end is located is higher than the horizontal plane where the optical device is located.
2. The optical communication interface assembly of claim 1,
the bottom cover is of a cuboid box-shaped structure and comprises a flat bottom cover bottom and a plurality of side walls perpendicular to the bottom cover bottom, and the side walls are equal in height.
3. The optical communication interface assembly of claim 2,
the number of the optical devices is at least two, and the two optical devices are both positioned on the same side of the printed circuit board.
4. The optical communication interface assembly of claim 3,
the optical device includes a light emitting assembly and a light receiving assembly.
5. The optical communication interface assembly of claim 4,
the printed circuit board comprises two printed circuit board layers with different heights and parallel to each other, the optical device and the signal output end are respectively positioned on the two printed circuit board layers,
the printed circuit board layer provided with the optical device is lower in height than the printed circuit board layer provided with the signal output terminal.
6. The optical communication interface assembly of claim 5,
the printed circuit board layer provided with the optical device is electrically connected with the printed circuit board layer provided with the signal output end through a columnar conductor.
7. The optical communication interface assembly of claim 5,
the printed circuit board layer provided with the optical device is electrically connected with the printed circuit board layer provided with the signal output end through a conductive through hole.
8. The optical communication interface assembly of claim 5,
the distance from the printed circuit board layer provided with the optical device to the bottom of the bottom cover is smaller than the distance from the printed circuit board layer provided with the optical device to the face cover.
9. The optical communication interface assembly of claim 8,
the distance from the printed circuit board layer provided with the optical device to the bottom of the bottom cover is less than or equal to half of the distance from the printed circuit board layer provided with the optical device to the face cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020919382.9U CN212905582U (en) | 2020-05-27 | 2020-05-27 | Optical communication interface assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020919382.9U CN212905582U (en) | 2020-05-27 | 2020-05-27 | Optical communication interface assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212905582U true CN212905582U (en) | 2021-04-06 |
Family
ID=75267222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020919382.9U Active CN212905582U (en) | 2020-05-27 | 2020-05-27 | Optical communication interface assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212905582U (en) |
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2020
- 2020-05-27 CN CN202020919382.9U patent/CN212905582U/en active Active
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