CN216816809U

CN216816809U - Optical fiber transceiver shielding box and electromagnetic compatibility darkroom

Info

Publication number: CN216816809U
Application number: CN202122661509.9U
Authority: CN
Inventors: 彭祥军
Original assignee: Albatross Projects Rf Technology Shanghai Co ltd
Current assignee: Albatross Projects Rf Technology Shanghai Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-06-24
Anticipated expiration: 2031-11-02

Abstract

The utility model provides a fiber transceiver shielding box and an electromagnetic compatibility darkroom, comprising: the shielding bottom box comprises a shielding bottom box, an optical fiber cut-off waveguide tube, a shielding box cover, a joint, a power filter and an optical fiber transceiver; the shielding bottom box is provided with the shielding box cover and forms a cavity with the shielding box cover; the optical fiber transceiver is arranged in the cavity; and the shielding bottom box is provided with the optical fiber cut-off waveguide tube, the joint and the power filter. The device solves the problem that the optical fiber transceiver can not be directly used in a darkroom, and compared with a complex network filter, the device is simpler and easier to use.

Description

Optical fiber transceiver shielding box and electromagnetic compatibility darkroom

Technical Field

The utility model relates to the field of electromagnetic shielding, in particular to a shielding box of an optical fiber transceiver and an electromagnetic compatibility darkroom.

Background

The electromagnetic compatibility darkroom needs network communication inside and outside, must pass through the fiber transceiver and change into and out of darkroom shielding shell, and fiber transceiver product itself accords with the limit value requirement of national electromagnetic compatibility standard, but according to the environmental requirement of the electromagnetic compatibility test stipulated in national standard GB 9254: the test site should be able to distinguish between nuisance and environmental noise from the test object (EUT). Site suitability in this respect can be determined by measuring the ambient noise level (EUT not in operation), which should be guaranteed to be at least 6dB below the radiation and transmission to the specified limits.

The existing optical fiber transceiver can generate electromagnetic waves which can cause the electromagnetic compatibility test in a darkroom not to meet the environmental requirements, so a device is needed to be realized to limit the electromagnetic interference generated by the optical fiber transceiver and meet the requirements of noise level specified by the standard.

Patent document CN1145571A is to attach a metal cover plate to the shield box on the top and bottom sides of a housing having metal side walls after inserting a printed wiring board into the housing. A plurality of ribs bulging inward from the surface are provided on the inner wall surface of the frame body for supporting the peripheral edge of the printed wiring board so that stress does not act on the solder connecting the printed wiring board to the frame body. The patent aims at realizing the fixing mode of the shielding box, and does not specifically solve the problem of electromagnetic interference limitation of the optical fiber transceiver.

Patent document CN106982545B describes a foldable shielding box including a hollow housing, a first fixing portion and a second fixing portion. The hollow shell is used for accommodating the electronic device. The first fixing part is formed on one side of the hollow shell, and the second fixing part is formed on the other side of the hollow shell. The hollow shell, the first fixing part and the second fixing part are formed by folding the overlapped metal shielding layer and the insulating sheet, and the insulating sheet is attached to one side of the metal shielding layer facing the electronic device. The patent aims at realizing the folding mode of the shielding box, and does not aim at solving the problem of electromagnetic interference limitation of the optical fiber transceiver.

SUMMERY OF THE UTILITY MODEL

In view of the shortcomings in the prior art, it is an object of the present invention to provide a fiber optic transceiver shielding box and an electromagnetic compatibility dark room.

According to the utility model, the shielding box of the optical fiber transceiver comprises: the shielding bottom box comprises a shielding bottom box, an optical fiber cut-off waveguide tube, a shielding box cover, a joint, a power filter and an optical fiber transceiver;

the shielding bottom box is provided with the shielding box cover and forms a cavity with the shielding box cover;

the optical fiber transceiver is arranged in the cavity;

and the shielding bottom box is provided with the optical fiber cut-off waveguide tube, the joint and the power filter.

Preferably, a spring is arranged on the inner side of the side edge of the shielding box cover and is clamped on the shielding bottom box through the spring.

Preferably, a handle is installed on one side of the shielding box cover, which faces away from the shielding bottom box.

Preferably, a power line enters the cavity through the power filter;

the power line is connected with the optical fiber transceiver.

Preferably, the optical fiber enters the cavity through a fiber cut-off waveguide;

the optical fiber is connected with the optical fiber transceiver.

Preferably, the connector is connected to the optical fiber transceiver.

Preferably, an electromagnetic compatibility darkroom employs the fiber optic transceiver shield box.

Compared with the prior art, the utility model has the following beneficial effects:

the device solves the problem that the electromagnetic interference generated by the optical fiber transceiver can not be directly used in a darkroom under the requirement of an electromagnetic compatibility test environment, and compared with a more complex network filter, the device is simpler and easier to use.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a perspective view of a shielding box of an optical fiber transceiver;

FIG. 2 is a front view of a fiber optic transceiver cage;

FIG. 3 is a rear view of a fiber optic transceiver cage;

FIG. 4 is a left side view of the fiber optic transceiver cage;

FIG. 5 is a cross-sectional view of a fiber optic transceiver shield can;

FIG. 6 is a top view of a fiber optic transceiver cage;

shown in the figure:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

Example 1

As shown in fig. 1 to 6, a fiber optic transceiver shield box for an emc-compatible darkroom, comprises: the device comprises a shielding bottom box 1, an optical fiber cut-off waveguide tube 2, a shielding box cover 3, a connector 4, a handle 5, a power filter 6, an optical fiber transceiver 7 and a reed 8; the shielding bottom box 1 is provided with a shielding box cover 3 and forms a cavity with the shielding box cover 3, an optical fiber transceiver 7 is arranged in the cavity, the shielding bottom box 1 is provided with an optical fiber cut-off waveguide tube 2, a connector 4 and a power filter 6, and the connector 4 is connected with the optical fiber transceiver 7. The handle 5 is installed to one side of 3 back to the shielding end box 1 of shielding lid, and the inboard reed 8 of installing of 3 sides of shielding lid is through the reed 8 block on the shielding end box 1. The power line enters the cavity through the power filter 6, the power line is connected with the optical fiber transceiver 7, the optical fiber enters the cavity through the optical fiber cut-off waveguide tube 2, and the optical fiber is connected with the optical fiber transceiver 7.

The shielding box utilizes the Faraday cage principle and can isolate electromagnetic waves in a certain frequency range of the metal cage, and the frequency of the electromagnetic waves generated by the optical fiber transceiver is in the frequency range which can be isolated by the shielding box.

Example 2

Example 2 is a preferred example of example 1.

The embodiment comprises the following steps: the device comprises a shielding bottom box 1, an optical fiber cut-off waveguide tube 2, a shielding box cover 3, a connector 4, a handle 5, a power filter 6 and a reed 8. The optical fiber cut-off waveguide tube 2 is arranged on the shielding bottom box 1, two sides of the optical fiber cut-off waveguide tube 2 are fixed by large nuts, the connector 4 is an RJ45 connector and is arranged on the shielding bottom box 1, and the power filter 6 is arranged on the shielding bottom box 1; the handle 5 is arranged on the shielding box cover 3, and the reed 8 is arranged on the shielding box cover 3. The shielding box cover 3 can be opened by drawing the handle 5 on the shielding box cover 3, the shielding box cover 3 is placed on the shielding bottom box 1, and the shielding box cover 3 is pressed to be in close contact with the shielding bottom box 1. The power needed by the optical fiber transceiver 7 is fed into the shielding box through the power filter 6, the connected optical fibers are connected out through the optical fiber cut-off waveguide tube 2 and enter and exit the electromagnetic compatibility darkroom, and the network signals needed by communication are connected to the joint 4 of the shielding box.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A fiber optic transceiver cage, comprising: the device comprises a shielding bottom box (1), an optical fiber cut-off waveguide tube (2), a shielding box cover (3), a connector (4), a power filter (6) and an optical fiber transceiver (7);

the shielding bottom box (1) is provided with the shielding box cover (3) and forms a cavity with the shielding box cover (3);

-mounting said fiber optic transceiver (7) in said cavity;

the shielding bottom box (1) is provided with the optical fiber cut-off waveguide tube (2), the joint (4) and the power filter (6).

2. The fiber optic transceiver shield box of claim 1, wherein: and a reed (8) is arranged on the inner side of the side edge of the shielding box cover (3) and is clamped on the shielding bottom box (1) through the reed (8).

3. The fiber optic transceiver shield box of claim 1, wherein: and a handle (5) is arranged on one side of the shielding box cover (3) back to the shielding bottom box (1).

4. The fiber optic transceiver shield box of claim 1, wherein: the power line enters the cavity through the power filter (6);

the power line is connected with the optical fiber transceiver (7).

5. The fiber optic transceiver shield box of claim 1, wherein: the optical fiber enters the cavity through the optical fiber cut-off waveguide tube (2);

the optical fiber is connected with the optical fiber transceiver (7).

6. The fiber optic transceiver shield box of claim 1, wherein: the joint (4) is connected with the optical fiber transceiver (7).

7. An electromagnetic compatible darkroom, comprising: the electromagnetic compatibility darkroom adopts the fiber-optic transceiver shielding box of any one of claims 1-6.