CN215910688U - Optical module capable of reducing electromagnetic interference - Google Patents
Optical module capable of reducing electromagnetic interference Download PDFInfo
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- CN215910688U CN215910688U CN202122260377.9U CN202122260377U CN215910688U CN 215910688 U CN215910688 U CN 215910688U CN 202122260377 U CN202122260377 U CN 202122260377U CN 215910688 U CN215910688 U CN 215910688U
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Abstract
The utility model discloses an optical module capable of reducing electromagnetic interference, and belongs to the technical field of optical module production. The assembly structure comprises a shell and a bare module, wherein the shell comprises an upper cover and a base, a boss is arranged on the contact surface of the upper cover and the base, and the boss and the base form interference fit, so that the upper cover and the base are tightly contacted while the assembly operability is ensured, and the problem of electromagnetic interference caused by an assembly gap is avoided; a cavity for mounting the bare module is formed between the upper cover and the base, and a buckle is arranged in the cavity and divides the cavity into a cavity I and a cavity II; the buckle is a separated buckle and comprises a buckle seat and a buckle top cover arranged above the buckle seat, and a through hole I for fixing a light device in the bare module is formed between the buckle seat and the buckle top cover; the metal shielding sheet which shields the interior of the bare module and the exterior of the bare module is arranged on the buckle, so that the problem of electromagnetic interference is effectively solved.
Description
Technical Field
The utility model relates to an optical module capable of reducing electromagnetic interference, and belongs to the technical field of optical module production.
Background
The optical module comprises an optoelectronic device, a functional circuit, an optical interface and the like, wherein the optoelectronic device comprises a transmitting part and a receiving part. The optical module completes photoelectric conversion and electro-optical conversion, namely the optical module has the functions that a transmitting end converts an electric signal into an optical signal, and a receiving end converts the optical signal into the electric signal after the optical signal is transmitted by an optical fiber.
With the rapid development of communication and the increasing exuberance of the demand of cloud computing, the market demand for high-speed optical modules increases day by day, and the precision requirement on the optical modules is very high, but inside the optical modules, electromagnetic interference (EMI) exists between electromagnetic waves generated by a circuit board and electromagnetic waves generated by optoelectronic devices, and the electromagnetic interference can affect the transmission of optical signals; and, because the structure body has a gap after assembly due to the problem of machining tolerance, when the transmission rate of the optical signal in the optical module is increased, electromagnetic leakage may occur at the joint of each component in the optical module, further electromagnetic interference influence occurs, and further normal operation of the optical module is greatly influenced.
At present, plastic buckle baffles are mainly adopted in the industry to prevent electromagnetic interference, but the isolation effect of the device is poor, and the electromagnetic interference still leaks. In the prior art, "CN 201610981758.7, an optical module for suppressing electromagnetic interference", a method is provided in which a diaphragm set is designed on an interface side where a fixed optical module is externally connected when an optical module housing is designed, and an electromagnetic interference signal with a specified frequency is blocked and attenuated by using a suppression effect of the diaphragm set on the electromagnetic interference signal with the specified frequency in an operating process of the optical module. "CN 201910535304.0, electromagnetic interference prevention optical module" discloses: the mounting structure comprises a shell, a mounting cavity is formed, a spacer is arranged in the mounting cavity, the spacer divides the mounting cavity into a first mounting cavity and a second mounting cavity, and a through hole for communicating the first mounting cavity with the second mounting cavity is formed in the spacer; the optical fiber adapter is accommodated in the first mounting cavity, and part of the optical fiber adapter penetrates through the through hole and then extends into the second mounting cavity; the optical assembly is accommodated in the second mounting cavity and comprises an optical device and a circuit board electrically connected with the optical device, and the optical device is also connected with the optical fiber adapter; and the electromagnetic shielding ring is arranged on the hole wall of the through hole and is abutted against the peripheral wall of the optical fiber adapter. "CN 202022918118.6, an optical module capable of reducing electromagnetic interference" discloses: including the base and install the optical device on the base, still including being used for pressing the optical device fixture block on the base, the both sides of fixture block all are equipped with the electrically conductive cloth that is used for reducing electromagnetic interference, and the optical device is all laminated to electrically conductive cloth. The utility model discloses a through all establish electrically conductive cloth in the both sides of fixture block, can reduce the electromagnetic radiation volume of light mouthful part effectively. "CN 201920241003.2, an anti-electromagnetic interference optical module" discloses: the conductive rubber ring comprises a cover, wherein a groove for accommodating the conductive rubber ring is formed in the cover, the cover is also provided with a notch, the notch is communicated with the groove, conductive rubber is arranged in the notch, and the conductive rubber is used for filling gaps among the cover, a base and a socket; the optical module can reduce or eliminate mounting gaps among the cover, the base and the socket, improve the anti-electromagnetic interference capability of the optical module, and is beneficial to EMI protection.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides an optical module capable of reducing electromagnetic interference. In the technical scheme, the arrangement of the lug boss on the shell reduces gaps formed during component assembly, thereby effectively inhibiting electromagnetic interference; through the optimization of the structure of the fastener body, electromagnetic interference and the like are reduced.
In order to achieve the technical purpose, the following technical scheme is proposed:
an optical module capable of reducing electromagnetic interference comprises a shell and a bare module arranged in the shell, wherein the shell comprises an upper cover and a base, a boss is arranged on the contact surface of the upper cover and the base, and the boss and the base form interference fit, so that the upper cover and the base are in tight contact while the assembly operability is ensured, and the problem of electromagnetic interference caused by assembly gaps is avoided;
a cavity for mounting the bare module is formed between the upper cover and the base, and a buckle is arranged in the cavity and divides the cavity into a cavity I and a cavity II; the buckle is a separated buckle and comprises a buckle seat and a buckle top cover arranged above the buckle seat, and a through hole I for fixing a light device in the bare module is formed between the buckle seat and the buckle top cover; the buckle is provided with a metal shielding sheet for shielding the inside of the bare module and the outside of the bare module (namely shielding the cavity I and the cavity II).
Furthermore, be the cooperation setting between through-hole I and the optical device installation face, avoid the fit clearance, and then effectively reduce electromagnetic interference.
Furthermore, the metal shielding sheet is U-shaped, the buckle is sleeved in the metal shielding sheet, and a through hole II corresponding to the through hole I is formed in the metal shielding sheet. This setting, the associativity of guaranteeing between buckle seat and the buckle top cap is more stable.
Further, the metal shielding sheet comprises an upper metal shielding sheet and a lower metal shielding sheet, a through hole II is formed between the upper metal shielding sheet and the lower metal shielding sheet, and the metal shielding sheet is arranged in a separating mode, so that assembly, maintenance and the like of parts are facilitated.
Further, the buckle is the buckle of plastic material, guarantees the pliability of buckle to and the compactness after the fixing.
Furthermore, a shielding cover is sleeved outside the shell.
In the present embodiment, the term "fit" includes matching of dimensions and the like.
The positional relationships such as "upper", "bottom", "between", "inner", "upper" and "lower" in the present technical solution are defined according to the actual usage state, and are conventional terms in the technical field and also conventional terms in the actual usage process of the person skilled in the art.
By adopting the technical scheme, the beneficial technical effects brought are as follows:
the upper cover is provided with the boss on the contact surface with the base, and the boss and the base form interference fit, so that the upper cover and the base are tightly contacted while the assembly operability is ensured, gaps formed during assembly of parts are reduced, and the problem of electromagnetic interference caused by assembly gaps is avoided;
the buckle comprises a buckle seat and a buckle top cover arranged above the buckle seat, a metal shielding sheet for shielding the space between the inside of the bare module and the outside of the bare module is arranged on the buckle, and through the arrangement of the separated buckle and the metal shielding sheet, the flexibility of the buckle is ensured, and meanwhile, the metal shielding sheet realizes an isolation effect and prevents EMI leakage and the like.
Drawings
FIG. 1 is a prior art bare module with a snap fit installed;
FIG. 2 is a view of the bare module of the present invention with the buckle installed;
FIG. 3 is a prior art bare module with a base installed;
FIG. 4 is a bare module of the present invention with the base installed;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic view of the structure of the upper cover of the present invention;
FIG. 7 is a diagram illustrating a prior art snap-fit structure;
FIG. 8 is a schematic view of the buckle assembly of the present invention;
FIG. 9 is a schematic structural view of a metal shielding plate according to the present invention;
FIG. 10 is an exploded view of the present invention;
in the figure, 1, a shell, 11, an upper cover, 12, a base, 2, a boss, 3, a bare module, 4, a buckle, 41, a buckle seat, 42, a buckle top cover, 43, a through hole I, 5, a metal shielding sheet, 51, a through hole II, 52, an upper metal shielding sheet, 53, a lower metal shielding sheet, 6 and a shielding cover.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.
Example 1
As shown in fig. 2, 4-6: an optical module capable of reducing electromagnetic interference comprises a shell 1 and a bare module 3 arranged in the shell 1, wherein the shell 1 comprises an upper cover 11 and a base 12, a boss 2 is arranged on a contact surface of the upper cover 11 and the base 12, and the boss 2 and the base 12 form interference fit, so that the upper cover 11 and the base 12 are tightly contacted while the assembly operability is ensured, and the electromagnetic interference problem caused by an assembly gap is avoided;
a cavity for mounting the bare module 3 is formed between the upper cover 11 and the base 12, a buckle 4 is arranged in the cavity, and the cavity is divided into a cavity I and a cavity II by the buckle 4; the buckle 4 is a separate buckle (as shown in fig. 8 and 10), the buckle 4 includes a buckle seat 41 and a buckle top cover 42 disposed above the buckle seat 41, and a through hole i 43 for fixing a light device in the bare module 3 is formed between the buckle seat 41 and the buckle top cover 42; the buckle 4 is provided with a metal shielding sheet 5 for shielding the inside of the bare module 3 from the outside of the bare module 3.
Wherein, the shell 1 is also sleeved with a shielding cover 6.
Example 2
Based on the embodiment 1, the present embodiment is further,
be the cooperation setting between I43 of through-hole and the optical device installation face, avoid the fit clearance, and then effectively reduce electromagnetic interference.
Example 3
Based on examples 1-2, this example was further,
the metal shielding sheet 5 is U-shaped (as shown in fig. 9), the buckle 4 is sleeved in the metal shielding sheet 5, and the metal shielding sheet 5 is provided with a through hole II 51 corresponding to the through hole I43. This setting guarantees that the associativity between buckle seat 41 and the buckle top cap 42 is more stable.
The method specifically comprises the following steps: the metal shielding sheet 5 comprises an upper metal shielding sheet 52 and a lower metal shielding sheet 53, a through hole II 51 is formed between the upper metal shielding sheet 52 and the lower metal shielding sheet 53, and the metal shielding sheet 5 is arranged in a separated mode, so that assembly, overhaul and the like of parts are facilitated.
Example 4
Based on examples 1-3, this example was further,
the buckle 4 is the buckle of plastic material, guarantees buckle 4's pliability to and the compactness after the fixing.
Claims (5)
1. An optical module capable of reducing electromagnetic interference, comprising: the device comprises a shell (1) and a bare module (3) arranged in the shell (1), wherein the shell (1) comprises an upper cover (11) and a base (12), a boss (2) is arranged on the contact surface of the upper cover (11) and the base (12), and the boss (2) and the base (12) form interference fit;
a cavity for mounting the bare module (3) is formed between the upper cover (11) and the base (12), a buckle (4) is arranged in the cavity, and the cavity is divided into a cavity I and a cavity II by the buckle (4); the buckle (4) is a separated buckle, the buckle (4) comprises a buckle seat (41) and a buckle top cover (42) arranged above the buckle seat (41), and a through hole I (43) for fixing a light device in the bare module (3) is formed between the buckle seat (41) and the buckle top cover (42); the buckle (4) is provided with a metal shielding sheet (5) which shields the inside of the bare module (3) and the outside of the bare module (3).
2. The optical module capable of reducing electromagnetic interference according to claim 1, wherein: the through hole I (43) and the optical device mounting surface are arranged in a matched mode.
3. The optical module capable of reducing electromagnetic interference according to claim 1, wherein: the metal shielding sheet (5) is U-shaped, the buckle (4) is sleeved in the metal shielding sheet (5), and a through hole II (51) corresponding to the through hole I (43) is arranged on the metal shielding sheet (5).
4. The optical module capable of reducing electromagnetic interference according to claim 3, wherein: the metal shielding sheet (5) comprises an upper metal shielding sheet (52) and a lower metal shielding sheet (53), and a through hole II (51) is formed between the upper metal shielding sheet (52) and the lower metal shielding sheet (53).
5. The optical module capable of reducing electromagnetic interference according to claim 1 or 3, wherein: the buckle (4) is made of plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260377.9U CN215910688U (en) | 2021-09-17 | 2021-09-17 | Optical module capable of reducing electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260377.9U CN215910688U (en) | 2021-09-17 | 2021-09-17 | Optical module capable of reducing electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215910688U true CN215910688U (en) | 2022-02-25 |
Family
ID=80309866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122260377.9U Active CN215910688U (en) | 2021-09-17 | 2021-09-17 | Optical module capable of reducing electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215910688U (en) |
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2021
- 2021-09-17 CN CN202122260377.9U patent/CN215910688U/en active Active
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