CN213659030U

CN213659030U - SFP + LC double-fiber optical module capable of efficiently shielding electromagnetic interference

Info

Publication number: CN213659030U
Application number: CN202023217739.8U
Authority: CN
Inventors: 范巍; 罗雨叶
Original assignee: Sichuan Huatuo Optical Communication Co ltd
Current assignee: Sichuan Huatuo Optical Communication Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-07-09
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a two fine optical module of SFP + LC of high-efficient shielding electromagnetic interference, include: the module base is provided with an opening, the opening of the module base covers the module upper cover, and a PCBA board is fixedly arranged in the module base; the cover contact surfaces on the two sides of the module base and the module upper cover are arranged into a stepped occlusion structure, namely, stepped contact surfaces are arranged on the two sides of an opening of the module base, occlusion surfaces matched with the stepped contact surfaces are arranged on the two sides of the module upper cover, and a protruding part with the width larger than that of the stepped contact surfaces is further arranged on the module upper cover; the PCBA board is provided with a light emitting component and a light receiving component, the PCBA board is provided with a conductive adhesive groove, the conductive adhesive groove is located below the light emitting component and the light receiving component, and a conductive adhesive tape is arranged in the conductive adhesive groove; clamping grooves are respectively formed in two sides of the module base, and shielding covers are clamped in the clamping grooves. The utility model provides a two fine optical module of SFP + LC low cost has promoted optical module electromagnetic shield performance by a wide margin.

Description

SFP + LC double-fiber optical module capable of efficiently shielding electromagnetic interference

Technical Field

The utility model belongs to the technical field of optical communication and optical module, more specifically says, the utility model relates to a high-efficient SFP + LC double fiber optical module that shields electromagnetic interference.

Background

The optical module generally comprises a photoelectronic device, a functional circuit, an optical interface and other structures, wherein the photoelectronic device comprises a transmitting part and a receiving part. The optical module has the functions that the transmitting end converts an electric signal into an optical signal, and the receiving end converts the optical signal into the electric signal after the optical signal is transmitted by the optical fiber.

At present, SFP + and SFP28 optical modules conform to the shape of an SFF-8432 protocol, the anti-electromagnetic interference performance of a module in work is improved along with the market, the shape width of the module conforms to the protocol, the width of the module cannot be increased, the module structural member is a thin-shell die-casting zinc alloy product, the deformation of the module structural member cannot be avoided, and gaps often exist at the joint of a base and an upper cover of the module, so that electromagnetic waves are leaked out of the module, and the electromagnetic interference is caused. Meanwhile, because the width of the module is limited, spaces for adding shielding conductive adhesive are not arranged on two sides of the module, and the cost of the structural member is greatly increased by using a large amount of conductive adhesive.

Therefore, there is a need for an SFP + LC dual optical fiber module that can efficiently shield electromagnetic interference and is low in cost.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an SFP + LC dual-fiber optical module for efficiently shielding electromagnetic interference, including:

the module comprises a module base, a module cover and a module cover, wherein an opening is formed in the module base, the opening of the module base covers the module cover, and a PCBA board is fixedly arranged in the module base;

the cover contact surfaces on the two sides of the module base and the module upper cover are arranged into a stepped occlusion structure, namely stepped contact surfaces are arranged on the two sides of an opening of the module base, occlusion surfaces matched with the stepped contact surfaces are arranged on the two sides of the module upper cover, and a protruding part with the width larger than that of the stepped contact surfaces is further arranged on the module upper cover;

the PCBA board is provided with a light emitting component and a light receiving component, a conductive adhesive groove is formed in the PCBA board and located below the light emitting component and the light receiving component, and a conductive adhesive tape is arranged in the conductive adhesive groove;

the module comprises a module base and is characterized in that clamping grooves are formed in two sides of the module base respectively, and shielding cases are clamped in the clamping grooves.

Preferably, the module upper cover is provided with special-shaped plugging ends on two sides, the module base is provided with a plugging groove matched with the special-shaped plugging ends, and the special-shaped plugging ends are embedded into the plugging groove.

Preferably, the lower surface of the module base is fixedly provided with an installation ring, the installation ring is rotatably provided with a pull ring, and the pull ring structurally comprises connection ring bodies positioned at two sides of the module base and a buckling ring body integrally formed with the connection ring bodies;

the module base upper surface slides and is provided with the unblock key, module upper cover front end is provided with the mounting groove, the tip of unblock key penetrates to the mounting groove in, the lock ring body lock of pull ring is on the surface of unblock key.

Preferably wherein one end of the PCBA board extends out of the rear end of the module base.

Preferably wherein the occlusal surface extends into the interior of the shield.

The utility model discloses at least, include following beneficial effect: the utility model provides a two fine modules of SFP + LC of high-efficient shielding electromagnetic interference adopts the design of the mutual interlock of module base and module upper cover to use a small amount of conductive adhesive tape in the conductive adhesive groove of PCBA board, reunion shield cover's setting has formed the enclosure space of three directions, has increased substantially the anti-electromagnetic interference performance of optical module, has effectively blockked the electromagnetic and has leaked.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Description of the drawings:

fig. 1 is a schematic structural diagram of an SFP + LC dual-fiber optical module for efficiently shielding electromagnetic interference according to the present invention;

fig. 2 is a schematic top view of the SFP + LC dual-fiber optical module for efficiently shielding electromagnetic interference according to the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

fig. 4 is a schematic side view of the SFP + LC dual-fiber optical module for efficiently shielding electromagnetic interference according to the present invention;

fig. 5 is a schematic bottom structure view of the SFP + LC dual-fiber optical module for high-efficiency shielded electromagnetic dry burning provided by the present invention;

figure 6 is the PCBA plate structure sketch map that the utility model provides.

The specific implementation mode is as follows:

the present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be noted that in the description of the present invention, the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, such as "connected," which may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a connection between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention in a specific context.

Furthermore, in the present disclosure, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature in direct contact with the first and second features, or in indirect contact with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-6: the utility model discloses a two fine optical module of SFP + LC of high-efficient shielding electromagnetic interference, include:

the module comprises a module base 1, an upper module cover 2 and a PCBA board 3, wherein an opening is formed in the module base 1, the upper module cover 2 covers the opening of the module base 1, and the PCBA board 3 is fixedly arranged in the module base 1;

the cover contact surfaces on the two sides of the module base 1 and the module upper cover 2 are arranged to be of a stepped occlusion structure, namely, stepped contact surfaces 101 are arranged on the two sides of an opening of the module base 1, occlusion surfaces 201 matched with the stepped contact surfaces 101 are arranged on the two sides of the module upper cover 2, and a protruding part 202 with the width larger than that of the stepped contact surfaces 101 is further arranged on the module upper cover 2;

the PCBA board 3 is provided with a light emitting component 4 and a light receiving component 5, the PCBA board 3 is provided with a conductive adhesive groove 6, the conductive adhesive groove 6 is positioned below the light emitting component 4 and the light receiving component 5, and a conductive adhesive tape is arranged in the conductive adhesive groove 6;

the module comprises a module base 1 and is characterized in that clamping grooves 7 are formed in two sides of the module base 1 respectively, and shielding cases 8 are clamped in the clamping grooves 7.

The working principle is as follows: the utility model provides a two fine optical module of SFP + LC of high-efficient shielding electromagnetic interference adopts the structural design of the mutual interlock in

module base

1 and 2 both sides of module upper cover to set up conductive adhesive groove 6 on the PCBA board, set up electrically conductive adhesive tape in conductive adhesive groove 6, the shield cover 8 of draw-in groove 7 blocks is passed through to recombination module base 1 both sides, the enclosure space of three directions has been formed in module base 1, the electromagnetic wave has effectively been blockked and has leaked, the anti-electromagnetic interference performance of two fine optical module of SFP + LC has been promoted by a wide margin. Simultaneously, the interlock structural design of module base 1 and module upper cover 2, even under the condition that module upper cover 2 warp, module base 1 and module upper cover 2 still are in the encapsulated situation, consequently the utility model provides a high-efficient shielding electromagnetic interference's SFP + LC double fiber optical module has outstanding sealing performance.

In the above technical solution, the module upper cover 2 is provided with the special-shaped plugging end 203 at two sides, the module base 1 is provided with the plugging groove 102 adapted to the special-shaped plugging end 203, and the special-shaped plugging end 203 is embedded into the plugging groove 102. This arrangement improves the tightness of the snap connection of the module upper cover 2 and the module base 1.

In the above technical solution, the lower surface of the module base 1 is fixedly provided with the mounting ring 103, the mounting ring 103 is rotatably provided with the pull ring 9, and the pull ring 9 structurally comprises a connecting ring body 901 located at two sides of the module base 1 and a fastening ring body 902 integrally formed with the connecting ring body 901;

the module base 1 upper surface slides and is provided with unlocking

key

10, 2 front ends of module upper cover are provided with mounting groove 11, the tip of unlocking key 10 penetrates to mounting groove 11 in, the lock ring 902 lock of pull ring 9 is on the surface of unlocking key 10. Through rotating pull ring 9, make pull ring 9 break away from the lock contact to unblock key 10 surface, then slide unblock key 10, can take off module upper cover 2 from module base 1, consequently pull ring 9 cooperation unblock key 10 and mounting groove 11 for it is fixed to realize the connection to module base 1 and module upper cover 2.

In the above technical solution, one end of the PCBA board 3 extends outside the rear end of the module base 2.

In the technical scheme, the occlusion surface extends into the shielding case 8, and the anti-electromagnetic interference performance of the SFP + LC dual-fiber optical module is further improved by the arrangement.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims

1. An SFP + LC dual-fiber optical module capable of efficiently shielding electromagnetic interference is characterized by comprising:

2. The SFP + LC dual-fiber optical module with high electromagnetic interference shielding efficiency as claimed in claim 1, wherein the module upper cover is provided with special-shaped plugging ends at two sides, the module base is provided with plugging grooves matched with the special-shaped plugging ends, and the special-shaped plugging ends are embedded into the plugging grooves.

3. The SFP + LC dual-fiber optical module for efficiently shielding electromagnetic interference according to claim 1, wherein a mounting ring is fixedly arranged on the lower surface of the module base, a pull ring is rotatably arranged in the mounting ring, and the structure of the pull ring comprises connecting ring bodies positioned on two sides of the module base and fastening ring bodies integrally formed with the connecting ring bodies;

4. The SFP + LC dual-fiber optical module with efficient electromagnetic interference shielding of claim 1, wherein one end of the PCBA board extends outside the rear end of the module base.

5. The SFP + LC dual fiber optical module with efficient emi shielding of claim 1, wherein said mating surface extends into the interior of the shielding can.