CN217561787U

CN217561787U - Shell structure of optical module

Info

Publication number: CN217561787U
Application number: CN202221393005.1U
Authority: CN
Inventors: 路绪刚
Original assignee: HEBEI HYMAX OPTOELECTRONIC Inc
Current assignee: HEBEI HYMAX OPTOELECTRONIC Inc
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-11
Anticipated expiration: 2032-05-23

Abstract

The application provides a shell structure of optical module includes: the optical module cavity is formed by connecting and assembling the upper cover and the bottom shell by screws to contain and fix the optical module, and the optical port magnetic plate and the electric port magnetic plate are respectively sleeved at the optical port end and the electric port end of the optical module and then are packaged in the optical module cavity. In the embodiment of the application, the magnetic field direction of the optical port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the optical port, the magnetic field direction of the electric port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the electric port, the optical port magnetic plate and the electric port magnetic plate effectively and simply improve or relieve the EMC problem of the optical module, electromagnetic energy outward radiation inside the optical module and external electromagnetic energy radiation inside the optical module are reduced, electromagnetic interference during working of the optical module is reduced, and the working performance of the optical module is optimized.

Description

Shell structure of optical module

Technical Field

The utility model relates to an optical communication technical field especially relates to a shell structure of optical module.

Background

The steady development of the global telecommunication industry and the steady growth of broadband users lay a solid foundation for the development of the optical communication industry. With the continuous improvement of global bandwidth demand and the expansion of data centers and application fields of security monitoring optical communication industries, optical fiber broadband access has become a mainstream communication mode. Under the promotion of popularization of terminals such as smart phones and the like and applications such as video and cloud computing and the like, telecom operators continuously invest in building and upgrading mobile broadband and optical fiber broadband networks, and the investment scale of optical communication equipment is further expanded.

The rapid development of the optical communication industry drives the updating of the optical module. Under the market competition environment where optical communication is increasingly intense at present, the demand of communication equipment for reducing the size of the equipment and increasing the interface density is also increasing. To meet this demand, optical modules are also being developed in a small package with high integration. For example, QSFP (Small Form-factor Pluggable optical module), QSFP +, CFP/CFP2/CFP4, QSFP28, QSFP-DD and the like are all optical modules with Small-sized Pluggable high-density interfaces, at present, QSFP28 optical modules have four electrical channels, the operating rate of each channel is 10Gbps or 25Gbps, 40G and 100G and network application are supported, the number of the channels is increased to 8 by a brand-new product QSFP-DD (Pluggable dual density) optical module, the operating rate of each channel is increased to 25Gbps through MRZ modulation or is increased to 50Gbps through PAM4 modulation, and thus 200Gbps or 400Gbps is supported. The QSFP-DD optical module can meet or exceed the requirements of high-speed enterprise, telecommunication and data network equipment on the density of Ethernet, optical fiber channels and InfiniBand ports, thereby meeting the continuously improved requirements on 200Gbps and 400Gbps network solutions. However, these high-power high-rate optical modules may have intermittent or continuous voltage and current changes during operation, sometimes the rate of change is quite fast, resulting in generation of electromagnetic energy within different frequencies or within a frequency band, and the corresponding circuits may emit such energy into the surrounding environment, on the one hand, radiation of signals, which leaks out through slots, grooves, holes or other openings of the optical module housing; another aspect is signal conduction, where electromagnetic energy is freely radiated in open space by coupling onto power, signal and control lines away from the optical module housing, creating interference causing EMC (electromagnetic Compatibility) problems.

At present, two main ways are adopted for solving the EMC problem, one is to adopt a shielding way, the optical module housing is designed and processed to be sufficiently sealed, so that the conducted radiation and the space radiation can not leak, and meanwhile, the internal devices are not interfered by the outside, but are limited by the factors of the design of the optical module housing, the processing precision, the assembly of the housing and the optical device, and the like, and it is unrealistic to achieve an ideal sealing state; the other method is to adopt an absorption means, and to add the electric bubble cotton and the wave-absorbing material in the cavity of the optical module shell to convert the electromagnetic waves into heat energy so as to consume the electromagnetic waves influencing the system, but in the way, the addition of the electric bubble cotton and the wave-absorbing material increases the assembly difficulty and the cost of the optical module, improves the process, needs to be verified repeatedly and has enough assembly consistency, has low reliability and is not beneficial to large-scale production.

Therefore, a shell structure capable of simply and effectively improving or relieving the EMC problem of the optical module is needed, the EMC performance of the optical module is optimized, and the electromagnetic interference of the optical module during operation is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims at providing a shell structure of optical module, can be simple, effectual improvement or alleviate the EMC problem of optical module, reduce electromagnetic interference, optimize the working property of optical module.

In order to achieve the above object, an embodiment of the present invention provides a housing structure of an optical module, including: a smooth magnetic plate, an electric magnetic plate, an upper cover and a bottom shell,

the optical interface magnetic plate is provided with an optical through hole for penetrating and accommodating the optical transmitting adapter and the optical receiving adapter;

the electric port magnetic plate is provided with an electric through hole for penetrating and accommodating the circuit board;

the upper cover is provided with an upper cover electric end capacity groove and an upper cover optical end capacity groove;

the bottom shell is provided with a bottom shell electric end containing groove and a bottom shell optical end containing groove, the upper cover and the bottom shell are connected and assembled through screws to form an optical module cavity for containing and fixing an optical module, the upper cover electric end containing groove and the bottom shell electric end containing groove are matched to form an electric end containing groove for containing the electric port magnetic plate, and the upper cover optical end containing groove and the bottom shell optical end containing groove are matched to form an optical end containing groove for containing the optical port magnetic plate.

In the above housing structure of an optical module, after the optical port magnetic plate is mounted in the optical end capacitance groove, the magnetic field direction of the optical port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the optical end capacitance groove; after the electric port magnetic plate is installed in the electric end capacitor groove, the magnetic field direction of the electric port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the electric end capacitor groove.

In the housing structure of the optical module, the optical interface magnetic plate and the electrical interface magnetic plate are both permanent magnetic metal pieces.

In the above-mentioned housing structure of the optical module, the bottom shell is further provided with a locking surface, and after the optical module is inserted into the cage of the communication device, the locking surface blocks the locking plate of the cage, so that the optical module is locked and fixed in the cage.

The optical module housing structure further comprises a zipper, the zipper is provided with an unlocking block and a handle, when the optical module exits the cage, the handle is pulled by a hand, the handle drives the unlocking block to jack up the locking plate to be separated from the locking surface, and the optical module is unlocked and pulled out of the cage.

In the embodiment of the application, the magnetic field direction of the optical port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the optical port, the magnetic field direction of the electric port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the electric port, the optical port magnetic plate and the electric port magnetic plate effectively and simply improve or relieve the EMC problem of the optical module, electromagnetic energy outward radiation inside the optical module and external electromagnetic energy radiation inside the optical module are reduced, electromagnetic interference during the working of the optical module is reduced, and the working performance of the optical module is optimized.

Drawings

Fig. 1 is an exploded view of an embodiment of a housing structure of an optical module according to the present application;

fig. 2 is a first assembly schematic diagram (with an upper cover and a zipper removed) of an embodiment of a housing structure of an optical module according to the present application;

fig. 3 is a second assembly schematic diagram (with a bottom case and a zipper removed) of an embodiment of a housing structure of an optical module according to the present application;

fig. 4 is a third assembly schematic diagram of an embodiment of a housing structure of an optical module according to the present application:

fig. 5 is a fourth assembly schematic diagram of an embodiment of a housing structure of an optical module according to the present application:

fig. 6 is a schematic diagram of an embodiment of a housing structure of an optical module according to the present application after an electrical interface magnetic plate and an optical interface magnetic plate are inserted into a bottom shell;

fig. 7 is a schematic diagram of an embodiment of a housing structure of an optical module according to the present application after an electrical interface magnetic plate and an optical interface magnetic plate are inserted in an upper cover;

fig. 8 is a schematic cross-sectional view of an embodiment of a housing structure of an optical module according to the present application;

fig. 9 is a schematic diagram of an optical module according to an embodiment of a housing structure of the optical module according to the present application after an optical interface magnetic plate and an electrical interface magnetic plate are sleeved on an optical module;

fig. 10 is a schematic view of an optical interface magnetic plate according to an embodiment of a housing structure of an optical module of the present application;

FIG. 11 is a schematic view of an embodiment of an electro-magnetic plate of the housing structure block of an optical module of the present application;

fig. 12 is a schematic diagram of an upper cover of an embodiment of a housing structure of an optical module according to the present application;

fig. 13 is a schematic bottom view of an embodiment of a housing structure of an optical module according to the present application;

fig. 14 is a schematic view of a zipper assembly according to an embodiment of a housing structure of an optical module in the present application;

fig. 15 is a schematic diagram of a cage, a heat sink and a latch that are cooperatively assembled according to an embodiment of a housing structure of an optical module of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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 application.

As shown in fig. 1 to 13, an embodiment of the present application provides a housing structure of an optical module, including: electric interface magnetic plate 110, optical interface magnetic plate 120, upper cover 200 and bottom case 300,

as shown in fig. 9 and 10, the optical interface magnetic plate 120 is provided with an optical through hole 121 for passing through and accommodating the optical transmission adapter 411 and the optical reception adapter 421;

as shown in fig. 9 and 11, the electromagnetic plate 110 has an electrical through hole 111 for passing and receiving a circuit board 430;

as shown in fig. 12, the upper cover 200 is provided with an upper cover electrical end-containing slot 210 and an upper cover optical end-containing slot 220;

as shown in fig. 13, the bottom chassis 300 is provided with a bottom chassis electrical end receiving slot 310 and a bottom chassis optical end receiving slot 320, the transmitter optical subassembly 410 and the receiver optical subassembly 420 are respectively coupled to the circuit board 430 to form an optical module, the top cover 200 and the bottom chassis 300 are connected and assembled by screws 710 to form an optical module cavity for receiving and fixing the optical module, the transmitter optical adapter 411 and the receiver optical adapter 421, the top cover electrical end receiving slot 210 and the bottom chassis electrical end receiving slot 310 cooperate to form an electrical end receiving slot for receiving the optical interface magnetic plate 110, and the top cover optical end receiving slot 220 and the bottom chassis optical end receiving slot 320 cooperate to form an optical end receiving slot for receiving the optical interface magnetic plate 120.

As shown in fig. 2 and fig. 3, after the optical interface magnetic plate 120 is installed in the optical accommodating slot, the magnetic field direction of the optical interface magnetic plate 120 is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the optical interface (at the light emitting adapter 411 and at the light receiving adapter 421); after the electric interface magnetic plate 110 is installed in the electric end capacity groove, the magnetic field direction of the electric interface magnetic plate 110 is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the electric interface (at the gold finger 431 of the circuit board 430).

As shown in fig. 10 and fig. 11, the optical interface magnetic plate 120 and the electrical interface magnetic plate 110 are both permanent magnetic metal pieces, and can be made of aluminum-nickel-cobalt permanent magnetic alloy, iron-chromium-cobalt permanent magnetic alloy, permanent magnetic ferrite, rare earth permanent magnetic material, composite permanent magnetic material, and the like, and are used for shielding electromagnetic waves, reducing magnetic permeability, and reducing electromagnetic wave radiation.

As shown in fig. 13 and 15, the bottom housing 300 further has a locking surface 330, and after the optical module is inserted into the cage 900 of the communication device, the locking surface 330 blocks the locking plate 930 of the cage 900, so that the optical module is locked and fixed in the cage 900. The latch 920 presses the heat sink 910 onto the cage 900, and tightly attaches to the heat dissipation surface of the bottom chassis 300 to conduct heat and dissipate heat of the optical module.

As shown in fig. 13, 14, and 15, the housing structure of the optical module further includes a fastener 500, the fastener 500 includes an unlocking block 510 and a handle 520, and when the optical module is ejected from the cage 900, the handle 520 is pulled by a hand, the handle 520 drives the unlocking block 510 to jack up the locking piece 930 to separate from the locking surface 330, and the optical module is unlocked and pulled out of the cage 900. The external force applied to the pull 520 is removed and the zipper 500 is retracted to the original position by the restoring force of the spring 720.

In the embodiment of the present application, the magnetic field direction of the optical port magnetic plate 120 is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the optical port, the magnetic field direction of the electrical port magnetic plate 110 is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the electrical port, the optical port magnetic plate 120 and the electrical port magnetic plate 110 effectively and simply improve or alleviate the EMC problem of the optical module, electromagnetic energy outward radiation inside the optical module and external electromagnetic energy inward radiation inside the optical module are reduced, electromagnetic interference when the optical module works is reduced, and the working performance of the optical module is optimized.

The present invention has been described in terms of the preferred embodiment, and not by way of limitation, and it is to be understood that the terminology which has been used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A housing structure of a light module, comprising: an optical port magnetic plate, an electric port magnetic plate, an upper cover and a bottom shell, which are characterized in that,

the optical port magnetic plate is provided with an optical through hole for penetrating and accommodating the optical transmitting adapter and the optical receiving adapter;

the upper cover is provided with an upper cover electric end containing groove and an upper cover optical end containing groove;

2. A housing structure of a light module according to claim 1,

after the optical port magnetic plate is arranged in the optical end containing groove, the direction of the magnetic field of the optical port magnetic plate is opposite to the direction of the magnetic field of the electromagnetic wave induced magnetic field at the optical end containing groove;

after the electric port magnetic plate is arranged in the electric end capacitor groove, the magnetic field direction of the electric port magnetic plate is opposite to the magnetic field direction of the electromagnetic wave induced magnetic field at the electric end capacitor groove.

3. A housing structure of an optical module according to claim 2, wherein said optical interface magnetic plate and said electric interface magnetic plate are both permanent magnetic metal pieces.

4. A housing structure of an optical module according to claim 1, wherein the bottom housing further has a locking surface, and after the optical module is inserted into a cage of a communication device, the locking surface is locked to catch a locking plate of the cage, so that the optical module is locked and fixed in the cage.

5. The housing structure of the optical module according to claim 4, further comprising a zipper, wherein the zipper is provided with an unlocking block and a pull handle, when the optical module exits the cage, the pull handle is pulled by a hand, the pull handle drives the unlocking block to jack up the locking plate to be separated from the locking surface, and the optical module is unlocked and pulled out of the cage.