CN220342735U - Electromagnetic shielding structure, optical module and communication equipment - Google Patents

Abstract

The embodiment of the application provides an electromagnetic shielding structure, an optical module and communication equipment. The electromagnetic shielding structure comprises a shell and an unlocking device, wherein the shell is used for accommodating the optoelectronic device; the unlocking device is assembled on the outer side of the shell, and a groove is formed in the outer side of the unlocking device; the grooves serve to attenuate electromagnetic waves generated by the optoelectronic device when the housing is mounted to the optical cage. According to the scheme of the embodiment of the application, the electromagnetic interference can be well reduced.

Description

Electromagnetic shielding structure, optical module and communication equipment

Technical Field

Embodiments of the present disclosure relate to the field of communications technologies, but are not limited to, and in particular, to an electromagnetic shielding structure, an optical module, and a communications device.

Background

Along with the high-speed growth of communication and flow data, the capacity expansion demands of communication network upgrading and ultra-large-scale data centers are brought along with the high-speed growth of communication and flow data, and the improvement of the transmission rate and the transmission bandwidth of the optical module is also required; because the electromagnetic radiation generated by the internal devices and circuits of the optical module is continuously enhanced, the electromagnetic interference generated by the optical module has a certain influence on the transmission of signals. In order to reduce the influence of electromagnetic interference, a shielding structure is often formed by a conductive material, so that an electromagnetic wave transmission path is cut off, and the leakage of electromagnetic radiation is reduced, thereby eliminating or reducing the electromagnetic interference. The optical module generally performs electromagnetic shielding through the external metal shell, however, electromagnetic waves can be reflected due to blocking of the side wall of the tail part of the optical cage after leaking from the golden finger position of the optical module, and finally the electromagnetic waves can radiate from the optical cage through the periphery of the optical module, so that electromagnetic interference is easy to cause.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the application provides an electromagnetic shielding structure, an optical module and communication equipment, which can well reduce electromagnetic interference.

In a first aspect, an embodiment of the present application provides an electromagnetic shielding structure, including:

a housing for housing an optoelectronic device;

the unlocking device is assembled on the outer side of the shell, and a groove is formed in the outer side of the unlocking device;

the recess is for attenuating electromagnetic waves generated by the optoelectronic device, in case the housing is mounted to the light cage.

In a second aspect, an embodiment of the present application provides an optical module, including the electromagnetic shielding structure as described above, and further including a pull strap, where the pull strap is connected with the unlocking device.

In a third aspect, embodiments of the present application provide a communication device comprising an optical module as described above.

The embodiment of the application comprises the following steps: the electromagnetic shielding structure comprises a shell and an unlocking device, wherein the shell is used for accommodating and placing the optoelectronic device; the unlocking device is arranged on the outer side of the shell, and a groove is formed in the outer side of the unlocking device; the grooves may attenuate electromagnetic waves generated by the optoelectronic device when the housing is mounted in the light cage. According to the technical scheme provided by the embodiment of the application, electromagnetic waves generated by the photoelectric device are weakened by utilizing the grooves on the unlocking device arranged on the outer side of the shell, so that electromagnetic interference can be well reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the technical aspects of the present application, and are incorporated in and constitute a part of this specification, illustrate the technical aspects of the present application and together with the examples of the present application, and not constitute a limitation of the technical aspects of the present application.

FIG. 1 is an assembled schematic view of an optical module provided in one embodiment of the present application;

FIG. 2 is an exploded schematic view of an optical module provided in one embodiment of the present application;

FIG. 3 is a schematic structural view of an unlocking device according to an embodiment of the present application;

FIG. 4 is a side view of an unlocking device provided in one embodiment of the present application;

FIG. 5 is a schematic view of a first assembly structure of an unlocking device and a housing according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a second assembly structure of an unlocking device and a housing according to an embodiment of the present disclosure;

FIG. 7 is a schematic illustration of a conductive rubber disposed on a housing provided in accordance with one embodiment of the present application;

FIG. 8 is a schematic view of electromagnetic waves reflected from a side wall of an optical cage according to one embodiment of the present application;

fig. 9 is a schematic structural view of an electromagnetic shielding structure according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a groove location provided in one embodiment of the present application;

fig. 11 is a bump height schematic diagram provided in one embodiment of the present application.

Reference numerals:

the device comprises an upper shell 1, a lower shell 2, a pull belt 3, an unlocking device 4, a groove 41, a convex point 42, a screw 5, a PCB 6, a light device 7, a spring 8, conductive rubber 9 and a shell 10.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, greater than, less than, exceeding, etc. are understood to not include the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In addition, terms such as "upper", "above", "lower", "below", and the like, used herein to denote spatially relative positions, are used for convenience of description to describe one element or feature relative to another element or feature as illustrated in the figures. The term spatially relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.

The embodiment of the application provides an electromagnetic shielding structure, an optical module and communication equipment, wherein the electromagnetic shielding structure comprises a shell and an unlocking device, and the shell is used for accommodating and placing an optoelectronic device; the unlocking device is arranged on the outer side of the shell, and a groove is formed in the outer side of the unlocking device; the grooves may attenuate electromagnetic waves generated by the optoelectronic device when the housing is mounted in the light cage. According to the technical scheme provided by the embodiment of the application, electromagnetic waves generated by the photoelectric device are weakened by utilizing the grooves on the unlocking device arranged on the outer side of the shell, so that electromagnetic interference can be well reduced.

Embodiments of the present application are further described below with reference to the accompanying drawings.

As shown in fig. 1, 8 and 9, an electromagnetic shielding structure provided in an embodiment of a first aspect of the present application, where the electromagnetic shielding structure includes a housing 10 and an unlocking device 4; wherein the housing 10 is used for accommodating and protecting the photoelectric device; and the unlocking means 4 is fitted outside the housing 10; when the shell 10 is installed in the optical cage, the optoelectronic devices contained in the shell 10 can generate electromagnetic waves in the working process, most of the electromagnetic waves are shielded by the shell 10 with a metal structure, but part of the electromagnetic waves still leak from the positions of the golden fingers and are reflected in the optical cage, and finally the electromagnetic waves can radiate from the optical cage through the periphery of the optical module, so that electromagnetic interference is easy to cause; according to the embodiment of the application, the groove 41 is formed in the outer side of the unlocking device 4, so that electromagnetic waves can be weakened when the electromagnetic waves radiate from the optical cage, and the electromagnetic waves radiated from the optical cage are further shielded and weakened, so that electromagnetic interference is well prevented.

In some embodiments of the present application, the electromagnetic radiation effect on the signal can be effectively reduced by electromagnetic shielding, and the electromagnetic radiation leakage is reduced by forming a shielding structure by conductive materials, cutting off the electromagnetic wave transmission path, so as to eliminate or reduce electromagnetic interference. Since the optical module is generally electromagnetically shielded by an external metal housing. However, due to the fact that assembly gaps are reserved between the metal shells in a matched mode, electromagnetic waves can be reflected due to the fact that the side walls of the tail parts of the optical cages block after the electromagnetic waves leak from the positions of the golden fingers of the optical module, and finally the electromagnetic waves can radiate out of the optical cages through the periphery of the optical module. According to the embodiment of the application, the groove 41 is formed in the outer side of the existing unlocking device 4, so that electromagnetic waves can be weakened when being reflected from the side wall of the optical cage, the electromagnetic waves are weakened well, and normal transmission of signals is prevented from being influenced by electromagnetic interference.

It is noted that, the unlocking device 4 in the embodiment of the present application is a device for unlocking and pulling out the optical module from the optical cage, and the related structure and the manner in which the unlocking device 4 enables the optical module to be pulled out from the optical cage are all in the prior art, which is not described herein.

It can be understood that when the optical module is plugged into the optical cage, the unlocking device 4 contacts with the side wall of the optical cage, and the groove 41 arranged on the outer side of the unlocking device 4 contacts with the side wall of the optical cage, so that when the electromagnetic wave is reflected from the optical cage, the groove 41 can cut off and emit the transmission route of the electromagnetic wave, block the leakage route of the electromagnetic wave from the outer side of the unlocking device 4, and further realize the function of weakening the electromagnetic wave.

As shown in fig. 2 to 6, in addition to the groove 41 provided on the outside of the unlocking device 4, a bump 42 is provided on the inside of the unlocking device 4; the bump can reduce the assembly gap between the unlocking device 4 and the housing 10, and further shield electromagnetic waves generated by optoelectronic devices inside the housing 10.

In some embodiments of the present application, the related structure and manner of assembling the unlocking device 4 on the outer side of the housing 10 are all of the prior art, and will not be described herein again; the salient points 42 are arranged on the inner side of the unlocking device 4, so that gaps on the shell 10 can be well closed, a leakage path of electromagnetic waves from the inner side of the unlocking device 4 can be blocked, the electromagnetic waves are further weakened, and electromagnetic interference is prevented. In addition, in consideration of the possibility of surface irregularities of the unlocking device 4 and the housing 10 during processing, the use of the plurality of bumps 42 for contact can avoid the problem of contact failure caused by surface irregularities.

It is noted that fig. 5 shows that the unlocking means 4 and the housing 10 have an assembly gap after assembly; fig. 6 shows a filling process of the assembly gap between the unlocking device 4 and the housing 10 with the grooves 41 and the bumps 42 provided on the unlocking device 4. The bump 42 arranged on the inner side of the unlocking device 4 can be used for filling gaps existing on the shell 10 of the optical module, so that electromagnetic waves generated by optoelectronic devices in the shell 10 can be well prevented from leaking from the gaps existing on the shell 10, the leakage path of the electromagnetic waves is further blocked, and better electromagnetic shielding operation is realized.

As shown in fig. 2 and fig. 3, the positions of the grooves 41 arranged on the outer side of the unlocking device 4 and the protruding points 42 arranged on the inner side of the unlocking device 4 are in one-to-one correspondence, that is, the protruding points 42 are arranged on the corresponding inner side of the outer side provided with the grooves 41, and the grooves 41 and the protruding points 42 are in one-to-one correspondence, so that the positions of the grooves 41 and the protruding points 42 in the horizontal direction of the optical module are consistent, and a better electromagnetic shielding effect is achieved.

As shown in fig. 1 and 2, the case 10 includes an upper case 1 and a lower case 2, the upper case 1 is assembled to the lower case 2, and the bumps 42 are in contact with both the outer side of the upper case 1 and the outer side of the lower case 2.

In some embodiments of the present application, the housing 10 includes an upper case 1 and a lower case 2, the upper case 1 is assembled on the lower case 2 with an assembly gap therebetween, and if the assembly gap is not filled, electromagnetic waves generated by an optoelectronic device inside the housing 10 may leak from the gap between the upper case 1 and the lower case 2, causing a phenomenon of electromagnetic interference; therefore, the bump 42 may be provided on the inner side of the unlocking device 4, and the bump 42 may be used to fill the assembly gap between the upper case 1 and the lower case 2, so as to well prevent electromagnetic waves from leaking out of the assembly gap, thereby causing electromagnetic interference.

Notably, the optoelectronic devices inside the housing 10 may include, but are not limited to, a PCB board 6 and an optical device 7, and the upper case 1 and the lower case 2 may be connected by screws 5; in a specific embodiment of the present application, the unlocking means 4 are first assembled to the lower housing 2 during the assembly process, and then the springs 8 are assembled into the spring grooves of the lower housing 2. The bumps 42 have now come into contact with the side walls of the lower shell 2; then, after the upper shell 1 is assembled to the lower shell 2, the whole set of structural members are assembled, and the protruding points 42 are also contacted with the side edges of the upper shell 1 after the upper shell 1 is assembled. Under the condition that the convex points 42 are not arranged, gaps exist among the upper shell 1, the lower shell 2 and the unlocking device 4 after the structure is assembled, as shown in fig. 5, main electromagnetic radiation leaks out from the tail of the PCB 6 for the optical module, and as the optical module is inserted into the optical cage, the leaked electromagnetic radiation can be blocked and reflected by the metal baffle at the tail of the optical cage, and finally the electromagnetic wave leaks out from the optical cage along the periphery of the optical module after reflection. Since the larger the fit gap around the optical module is, the more likely the electromagnetic wave is leaked, in order to improve the fit gap shown in fig. 5, the grooves 41 and the bumps 42 are added to the unlocking device 4, and the electromagnetic wave reflected from the optical cage is subjected to multiple reflection by the grooves 41 to reduce the intensity, so that the state of the whole assembly is shown in fig. 6. In general, the unlocking device 6 adopts a scheme of single-row grooves 41 and protruding points 42 on one side, and the number of columns of the single-row grooves 41 and protruding points 42 can be increased according to the actual test result and the test index allowance of the optical module, as shown in fig. 4, 4 columns and more of grooves 41 and protruding points 42 can be arranged to block electromagnetic radiation paths.

As shown in fig. 1, 2, 3 and 4, the unlocking device 4 includes a first unlocking bar and a second unlocking bar, the first unlocking bar and the second unlocking bar are symmetrically disposed on opposite sides of the housing 10, the groove 41 is disposed on the outer side of the first unlocking bar and the outer side of the second unlocking bar, and the protruding point 42 is disposed on the inner side of the first unlocking bar and the inner side of the second unlocking bar.

In some embodiments of the present application, the first unlocking bar and the second unlocking bar are symmetrically disposed at opposite sides of the housing 10, and the outer sides of the first unlocking bar and the outer sides of the second unlocking bar are provided with grooves 41, and the inner sides of the first unlocking bar and the outer sides of the second unlocking bar are provided with bumps 42; the grooves 41 and the convex points 42 of the first unlocking strip and the grooves 41 and the convex points 42 of the second unlocking strip are arranged oppositely, so that the positions of the grooves 41 and the convex points 42 of the first unlocking strip and the grooves 41 and the convex points 42 of the second unlocking strip in the horizontal direction of the optical module are kept consistent, and electromagnetic shielding effects are prevented from being influenced due to dislocation of the grooves 41 and the convex points 42 on the left side and the right side.

As shown in fig. 10, in order to achieve a better electromagnetic shielding effect, the number of grooves 41 and protruding points 42 can be increased on the unlocking device 4, array processing is performed on two sides of the unlocking device 4, the number of the grooves 41 and protruding points 42 is increased, the effect of protecting multiple layers from electromagnetic leakage is achieved, and the distance between the grooves 41 is adjusted according to the number of the grooves 41; illustratively, in the case of an increased number of grooves 41, the distance between the grooves 41 is also relatively reduced.

As shown in fig. 6 and 11, when the bump 42 provided on the unlocking device 4 sufficiently meets the contact with the housing 10, the bump 42 increases to increase the width of the unlocking device 4, thereby affecting the protocol requirements of the optical module, so the height of the bump 42 needs to be set to be not higher than the distance between the unlocking device 4 and the housing 10.

As shown in fig. 7, in order to further realize a more excellent electromagnetic shielding effect, conductive rubber 9 may be provided at both the edge position of the upper case 1 and the optical port position of the lower case 2. The conductive rubber 9 can further prevent electromagnetic waves from leaking out from the edge position of the housing 10, further enhancing the electromagnetic shielding effect.

As shown in fig. 2 and 9, the side of the lower case 2 is provided with a mounting groove (not shown) through which the unlocking device 4 is fitted to the lower case 2; the mounting groove that the side of inferior valve 2 set up can make unlocking device 4 stably install on inferior valve 2 for the overall structure of optical module is compacter, stable.

Notably, this application embodiment provides an electromagnetic shield structure, improves the electromagnetic shield ability of optical module effectively, carries out the optimization with unlocking device 4, sets up recess 41 and bump 42 on unlocking device 4's structure basis, both can satisfy optical module's unblock function, has also improved optical module's whole electromagnetic shield ability simultaneously, and scheme processing is simple with low costs for unlocking device possesses optical module unblock and electromagnetic shield's dual function, easy operation assembly efficiency is high.

As shown in fig. 1 and fig. 2, an embodiment of the second aspect of the present application provides an optical module, where the optical module includes an electromagnetic shielding structure according to an embodiment of the first aspect, and further includes a pull strap 3, where the pull strap 3 is connected to an unlocking device 4. The pull belt 3 and the unlocking device 4 can be integrated by adopting an encapsulation injection molding process during processing, and the pull belt 3 and the unlocking device 4 are connected together, so that the whole optical module can be pulled out of the optical cage through the pull belt 3, and the pulling-out treatment of the optical module is facilitated.

As shown in fig. 2, in some embodiments of the present application, the optical module may further include an optical device 7 and a circuit board 6, where the optical device 7 is electrically connected to the circuit board 6, and the optical device 7 and the circuit board 6 are disposed inside the housing 10; the housing 10 can well protect the optical device 7 and the circuit board 6, so that the optical module can stably operate.

It should be noted that the optical module in this embodiment and the electromagnetic shielding structure in the foregoing embodiments belong to the same concept, so that these embodiments have the same implementation principle and technical effects, and will not be described in detail herein.

An embodiment of the third aspect of the present application further provides a communication device, which includes an optical module according to an embodiment of the second aspect of the present application.

It should be noted that the communication device in this embodiment and the optical module in the foregoing embodiments belong to the same concept, so these embodiments have the same implementation principle and technical effects, and will not be described in detail herein.

While the preferred embodiments of the present application have been described in detail, the present application is not limited to the above embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.

Claims (12)

1. An electromagnetic shielding structure, characterized in that: comprising the following steps:

a housing for housing an optoelectronic device;

the unlocking device is assembled on the outer side of the shell, and a groove is formed in the outer side of the unlocking device;

the recess is for attenuating electromagnetic waves generated by the optoelectronic device, in case the housing is mounted to the light cage.

2. The electromagnetic shielding structure according to claim 1, wherein the unlocking device is provided with a bump on an inner side thereof for reducing an assembly gap between the unlocking device and the housing.

3. The electromagnetic shielding structure according to claim 2, wherein the bumps are in one-to-one correspondence with the positions of the grooves.

4. The electromagnetic shielding structure according to claim 2, wherein the housing includes an upper case and a lower case, the upper case being fitted to the lower case, the bumps each being in contact with an outer side of the upper case and an outer side of the lower case.

5. The electromagnetic shielding structure according to claim 2, wherein the unlocking means includes a first unlocking bar and a second unlocking bar, the first unlocking bar and the second unlocking bar are symmetrically disposed on opposite sides of the housing, the groove is disposed on an outer side of the first unlocking bar and an outer side of the second unlocking bar, and the bump is disposed on an inner side of the first unlocking bar and an inner side of the second unlocking bar.

6. The electromagnetic shielding structure according to claim 5, wherein positions of the groove and the bump on the first unlocking bar and positions of the groove and the bump on the second unlocking bar correspond to each other.

7. The electromagnetic shielding structure according to claim 2, wherein a height of the bump is not higher than a distance between the unlocking device and the housing.

8. The electromagnetic shielding structure according to claim 4, wherein the edge position of the upper case and the light opening position of the lower case are both provided with conductive rubber.

9. The electromagnetic shielding structure according to claim 4, wherein a side of the lower case is provided with a mounting groove, and the unlocking device is fitted to the lower case through the mounting groove.

10. An optical module comprising the electromagnetic shielding structure of any one of claims 1 to 9, and further comprising a pull strap connected to the unlocking device.

11. The optical module of claim 10, further comprising an optical device and a circuit board, the optical device being electrically connected to the circuit board, the optical device and the circuit board being disposed inside the housing.

12. A communication device comprising an optical module as claimed in any one of claims 10 to 11.