CN216901048U

CN216901048U - SFP optical module

Info

Publication number: CN216901048U
Application number: CN202220087685.8U
Authority: CN
Inventors: 路绪刚
Original assignee: HEBEI HYMAX OPTOELECTRONIC Inc
Current assignee: HEBEI HYMAX OPTOELECTRONIC Inc
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-07-05
Anticipated expiration: 2032-01-14

Abstract

The application provides an SFP optical module, including: photoelectric portion, drain pan, sliding closure, unblock piece and pull ring, the welding spot that TOSA and ROSA in the pin weld in the functional circuit board constitutes photoelectric portion, with the sliding closure slip push and clamp constitute the optical module cavity and hold photoelectric portion, unblock piece and pull ring on the drain pan, rotatory pull ring drives the unblock piece and rotates to the optical module unblock back, the pulling pull ring can drive the optical module and withdraw from the metal cage. Based on the SFP optical module provided by the application, the photoelectric part can be stably arranged in the cavity of the optical module; the optical module is well locked and unlocked in the metal cage, and the LC optical fiber connector is firmly butted with the TOSA, the ROSA and the functional circuit board and is firmly butted with the electric connector in the host device; the photoelectric part, the bottom shell, the sliding cover, the unlocking block and the pull ring are convenient to assemble and disassemble, and can be replaced or recycled, so that the cost is saved.

Description

SFP optical module

Technical Field

The utility model relates to the technical field of optical communication, in particular to an SFP 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 application fields of data centers and security monitoring optical communication industries, optical fiber bandwidth 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 enlarged.

The rapid development of the optical communication industry also drives the update 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. In order to meet the requirement, the optical module is also developed towards a small package with high integration level, various high-cost optical modules are more and more, the structure is complex, the requirement on the photoelectric part is higher, and heavier economic cost is brought to enterprises and users, so that the optical module with simple assembly and lower cost is needed to meet the requirements of part of enterprises and users. Therefore, there is a need for an Optical module, in which an Optical electronic component can be stably accommodated in an Optical module cavity, a functional circuit board can be stably inserted into an electrical Connector in a host device for electrical signal transmission, an LC Optical fiber Connector (Lucent Connector or Local Connector, Lucent Connector) can be stably connected to a TOSA (Transmitting Optical Sub-Assembly) and a ROSA (Receiving Optical Assembly), and can be smoothly inserted into or unlocked from the Optical module for Transmitting and Receiving Optical signals; the optical module is simple and quick to assemble; and the cost of the optical module is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide an optical module which is simple to assemble and low in cost, so that a TOSA (transmitter optical subassembly), a ROSA (receiver optical subassembly), a functional circuit board and the like are stably installed in a cavity of the optical module, an LC (liquid crystal) optical fiber connector is inserted and locked at an optical fiber port of the optical module and is butted with the TOSA and the ROSA for optical signal transmission, and the functional circuit board is stably inserted and connected with an electric connector in a host device for electric signal transmission with the host device.

To achieve the above object, an embodiment of the present invention provides an SFP (10Gb Small Form-factor plug, 10Gb miniaturized package hot-Pluggable) optical module, including: photoelectric portion, drain pan, sliding closure, unblock piece and pull ring, the welding spot that TOSA and ROSA in the pin weld in the functional circuit board constitutes photoelectric portion, with the sliding closure slip push and clamp constitute the optical module cavity and hold photoelectric portion, unblock piece and pull ring on the drain pan, rotatory pull ring drives the unblock piece and rotates to the optical module unblock back, the pulling pull ring can drive the optical module and withdraw from the metal cage.

The photoelectric part is provided with a functional circuit board, a TOSA (transmitter optical subassembly) and a ROSA (receiver optical subassembly), the functional circuit board is provided with a welding point and a golden finger, the TOSA and the ROSA are provided with pins, the pins are welded on the welding point to enable the functional circuit board, the TOSA and the ROSA to be integrated into the photoelectric part, the golden finger is inserted into an electric connector in the host device after the optical module is inserted and locked in a metal cage in the host device, and the functional circuit board and the host device perform electric signal transmission;

the bottom shell is provided with an optical fiber port, a limiting surface, a ring pulling groove, an unlocking block groove, a sliding groove, a blocking surface and a component groove, the optical fiber port is provided with a locking surface, an LC optical fiber connector is inserted into the optical fiber port, the locking surface abuts against a locking block in the LC optical fiber connector to lock the LC optical fiber connector in the optical fiber port and butt joint the TOSA and the ROSA for optical signal transmission, the limiting surface abuts against an elastic plate in a metal cage for buffering when the functional circuit board is inserted into an electric connector in a host device, so that the golden finger and the electric connector are protected, and a lock head in the optical module and an elastic sheet lock hole in the metal cage are well and tightly locked, so that the golden finger is stably contacted with the electric connector;

the sliding cover is provided with a lock hole, a pressing plate, a sliding plate, a baffle and a pressing sheet, the lock hole is a through hole arranged on the sliding cover and is used for passing through and accommodating a lock head on the unlocking block, the sliding plate slides into the sliding groove to guide the sliding cover to be clamped on the bottom shell to form an optical module cavity, and the baffle is pushed and pressed onto the blocking surface to enable the sliding cover to be fixedly locked on the bottom shell;

the unlocking block is provided with a rotating shaft, a stress part and an unlocking part, the rotating shaft is clamped in the unlocking block groove and used for rotating the unlocking block, the stress part is provided with a pressed surface and a groove, the pressing plate is elastically pressed on the pressed surface to provide power for resetting of the unlocking block after the optical module is unlocked, the unlocking part is provided with a lock head, and the lock head passes through the lock hole and is clamped in a spring plate lock hole of the metal cage in a locking manner to lock the optical module in the metal cage;

the optical module unlocking device is characterized in that the pull ring is provided with a rotating shaft, a shaft bulge, a handheld part, a cantilever and a sleeve, the rotating shaft is clamped in the pull ring groove, the shaft bulge is arranged in the middle of the rotating shaft, the shaft bulge jacks up the groove of the stress part when the pull ring rotates under the action of external force, the stress part overcomes the elastic pressure of the pressing plate, the unlocking part descends, so that the lock head descends, when the lock head descends below a spring plate lock hole on the metal cage, the optical module is unlocked, the pull ring rotates to a horizontal position at the moment, the pull ring stops rotating and pulls the pull ring outwards, the pull ring drives the optical module to smoothly withdraw from the metal cage, the external force exerted on the pull ring disappears, the pressed surface enables the unlocking block to reset under the elastic pressure of the pressing plate, and the pull ring is driven to return to the original position, the handheld part provides pulling force to rotate the pull ring under the action of external force, the cantilever, the rotating shaft, the shaft protrusion and the handheld part form a closed frame body and provide torque for the rotation of the rotating shaft, and the sleeve is a circular cylinder made of plastic materials, is fixedly sleeved on the handheld part and is made of different colors and used for marking different working wavelengths of the optical module.

The optical module is further provided with a pressing block, the pressing block is provided with a circular arc groove and a boss, the circular arc groove and the assembly groove are matched and clamped with the TOSA and the ROSA in a clamping mode, and the boss abuts against the inner surface of the sliding cover, so that the TOSA and the ROSA are stably fixed in a cavity of the optical module.

In the SFP optical module, the bottom shell is further provided with a chamfer, a mounting surface, a threaded hole and an identification protrusion, the chamfer is favorable for the optical module to be smoothly inserted into a metal cage, the functional circuit board is placed on the mounting surface, a screw is adopted to penetrate through a through hole in the functional circuit board and screwed into the threaded hole, the functional circuit board is fastened on the mounting surface, the pressing sheet is pressed on the surface edge of the functional circuit board, so that the functional circuit board is stably fixed in a cavity of the optical module, and the identification protrusion is arranged on the inner surface of the bottom shell and is used for identifying the production date of the optical module and the LOGO of a production company LOGO.

In the SFP optical module, the sliding cover is further provided with an end elastic sheet and a bottom elastic sheet, the end elastic sheet and the bottom elastic sheet provide elastic force to stably lock the optical module in the metal cage, and the bottom elastic sheet plays a role of auxiliary elastic force when the optical module is unlocked.

The optical module is further provided with a protection plug, the protection plug is inserted into the optical fiber port, the TOSA and the ROSA are protected when the optical module is in a non-working state, and anti-skid protrusions and LOGO protrusions are arranged, the anti-skid protrusions are used for pulling out the optical fiber port, friction force between the anti-skid protrusions and fingers is increased when the protection plug is pulled out, the protection plug is pulled out smoothly, and the LOGO protrusions are used for marking LOGO of a production company of the optical module.

Based on the SFP optical module provided by the application, the photoelectric part can be stably arranged in the cavity of the optical module; the optical module is well locked and unlocked in the metal cage, and the LC optical fiber connector is firmly butted with the TOSA, the ROSA and the functional circuit board and is firmly butted with the electric connector in the host device; the photoelectric part, the bottom shell, the sliding cover, the unlocking block and the pull ring are convenient to assemble and disassemble, and can be replaced or recycled, so that the cost is saved.

Drawings

Fig. 1 is an exploded view of an SFP optical module according to an embodiment of the present disclosure;

fig. 2 is a first assembly diagram of an SFP optical module according to the present application;

fig. 3 is a second assembly schematic diagram of an SFP optical module according to the present application;

fig. 4 is a third assembly schematic diagram (an unlocked state) of the SFP optical module according to the present application;

FIG. 5 is a first cross-sectional view of an SFP optical module according to the present disclosure after assembly;

fig. 6 is a cross-sectional view of an assembled SFP optical module according to the present invention (an unlocked state);

fig. 7 is a schematic diagram of an optoelectronic part of an SFP optical module according to the present application;

fig. 8 is a schematic diagram of a functional circuit board of an SFP optical module according to the present application;

fig. 9 is a first schematic view of a bottom case of an SFP optical module according to the present application;

fig. 10 is a schematic diagram of a bottom case of an SFP optical module according to the present application;

fig. 11 is a first schematic diagram of a sliding cover of an SFP optical module according to the present application;

fig. 12 is a schematic diagram of a sliding cover of an SFP optical module according to the present application;

fig. 13 is a first schematic diagram of an unlocking block of an SFP optical module according to the present application;

fig. 14 is a schematic diagram of an unlocking block of an SFP optical module according to the present application;

FIG. 15 is a first drawing ring diagram of an SFP optical module according to the present application;

FIG. 16 is a second schematic diagram of a pull ring of an SFP optical module according to the present application;

FIG. 17 is a schematic diagram of a compact of an SFP optical module according to the present application;

fig. 18 is a schematic diagram of a protection plug of an SFP optical module according to the present application;

FIG. 19 is a schematic diagram of a metal cage for mating with an SFP optical module according to the present application;

fig. 20 is a schematic diagram of an LC fiber connector mated with an SFP optical module according to the present application.

The reference numerals are explained below:

100 photoelectric part

110 function circuit board 111 gold finger 112 solder joint 113 through hole 120 TOSA 121 pin 130 ROSA

200 bottom shell

210 fiber port 211 locking face 220 retaining face 221 chamfer 230 tab slot 240 unlocking block slot

251 stop surface 252 slide groove 260 assembly groove 270 mounting surface 271 threaded hole 280 identification projection

300 sliding closure

310 lock hole 320 press plate 330 slide plate 341 blocking plate 342 press plate 351 end spring piece 352 bottom spring piece

400 unlocking block

410 rotary shaft 420 forced part 421 pressure surface 422 groove 430 unlocking part 431 lock

500 pull ring

511 rotating shaft 512 shaft boss 520 cantilever 531 hand held portion 532 sleeve

600 briquetting 601 arc groove 602 boss

700 protection stopper 710 non-slip 720 LOGO protrusion

800 screw

900 metal cage 910 spring lock hole 920 spring plate

1000 LC fiber connector 1010 unlocking plate 1020 locking block

Detailed Description

Specific embodiments of the present application will be described in detail below. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the present application.

Fig. 1 is an exploded view of an SFP optical module according to an embodiment of the present disclosure, and the SFP optical module according to the present disclosure includes an optoelectronic component 100, a bottom case 200, a sliding cover 300, an unlocking block 400, and a pull ring 500.

As shown in fig. 2 to 6, after the optoelectronic component 100, the unlocking block 400 and the pull ring 500 are installed in the cavity assembled by the bottom case 200 and the sliding cover 300, a complete optical module product is formed;

as shown in fig. 7 and 8, the optoelectronic component 100 includes a functional circuit board 110, a TOSA120 and a ROSA130, the functional circuit board 110 includes a solder joint 112 and a gold finger 111, the TOSA120 and the ROSA130 include a pin 121, the pin 121 is soldered on the solder joint 112 to integrate the functional circuit board 110, the TOSA120 and the ROSA130 into the optoelectronic component 100, and after the optical module is inserted into a metal cage 900 in the host device, the gold finger 111 is inserted into an electrical connector in the host device to transmit electrical signals between the functional circuit board 110 and the host device;

as shown in fig. 9 and 10, the bottom chassis 200 is provided with an optical fiber port 210, a limiting surface 220, a ring pulling groove 230, an unlocking block groove 240, a sliding groove 252, a blocking surface 251 and a component groove 260, the optical fiber port 210 is provided with a locking surface 211, the LC optical fiber connector 1000 is inserted into the optical fiber port 210, the locking surface 211 abuts against a locking block 1020 in the LC optical fiber connector 1000, the LC optical fiber connector 1000 is locked in the optical fiber port 210, the TOSA120 and the ROSA130 are abutted for optical signal transmission, the limiting surface 220 abuts against an elastic plate 920 in the metal cage 900, and the locking surface is used for buffering when the functional circuit board 110 is inserted into an electrical connector in the host device, protecting the gold finger 111 and the electrical connector, and also used for locking the locking head 431 in the optical module and the elastic plate locking hole 910 in the metal cage 900 well and tightly, so that the gold finger 111 and the electrical connector are in stable contact;

as shown in fig. 11 and 12, the sliding cover 300 has a locking hole 310, a pressing plate 320, a sliding plate 330, a blocking piece 341 and a pressing plate 342, the locking hole 310 is a through hole disposed on the sliding cover 300 and is used for passing through and accommodating the locking head 431 on the unlocking block 400, the sliding plate 330 slides into the sliding groove 252 to guide the sliding cover 300 to be clamped on the bottom case 200 to form a light module cavity, and the blocking piece 341 is pushed onto the blocking surface 251 to lock the sliding cover 300 on the bottom case 200;

as shown in fig. 13 and 14, the unlocking block 400 is provided with a rotating shaft 410, a force receiving portion 420 and an unlocking portion 430, the rotating shaft 410 is clamped in the unlocking block groove 240 for rotation of the unlocking block 400, the force receiving portion 420 is provided with a pressure receiving surface 421 and a groove 422, the pressure plate 320 is elastically pressed on the pressure receiving surface 421 to provide power for resetting of the unlocking block 400 after the optical module is unlocked, the unlocking portion 430 is provided with a lock head 431, and the lock head 431 passes through the lock hole 310 and is locked in the spring plate lock hole 910 of the metal cage 900 in a locked manner to lock the optical module in the metal cage 900;

as shown in fig. 15 and 16, the pull ring 500 is provided with a rotation shaft 511, a shaft protrusion 512, a hand-held portion 531, a cantilever 520 and a sleeve 532, the rotation shaft 511 is clamped in the pull ring groove 230, the shaft protrusion 512 is disposed at a middle position of the rotation shaft 511, when the pull ring 500 rotates under an external force, the shaft protrusion 512 pushes up the groove 422 of the force-receiving portion 420, and with the rotation shaft 511 as a fulcrum, when the force-receiving portion 420 rises against a spring pressure of the pressing plate 320, the unlocking portion 430 descends, so that the lock head 431 descends, when the lock head 431 descends below a spring locking hole 910 of the metal cage 900, the optical module is unlocked, at this time, the pull ring 500 rotates to a horizontal position, the rotation of the pull ring 500 is stopped, the pull ring 500 is pulled outwards, the pull ring 500 drives the optical module to smoothly exit the metal cage 900, the external force applied on the pull ring 500 disappears, the pressure surface 421 resets the unlocking block 400 under the spring pressure of the pressing plate 320, thereby also driving the pull ring 500 to return to the original position, the hand-held portion 531 provides a pulling force to rotate the pull ring 500 under the external force, the cantilever 520, the rotating shaft 511, the shaft protrusion 512 and the handheld portion 531 form a closed frame, and provide a torque for the rotation of the rotating shaft 511, and the sleeve 532 is a circular cylinder made of a plastic material, is fixedly sleeved on the handheld portion 531, and is made of different colors to identify different operating wavelengths of the optical module.

As shown in fig. 17, the optical module is further provided with a pressing block 600, the pressing block 600 is provided with a circular arc groove 601 and a boss 602, the circular arc groove 601 and the module groove 260 cooperate to clamp and fix the TOSA120 and the ROSA130, and the boss 602 abuts against the inner surface of the sliding cover 300, so that the TOSA120 and the ROSA130 are fixed in the optical module cavity.

As shown in fig. 9 and 10, the bottom case 200 further has a chamfer 221, a mounting surface 270, a threaded hole 271 and an identification protrusion 280, the chamfer 221 facilitates the optical module to be smoothly inserted into the metal cage 900, the functional circuit board 110 is pressed onto the mounting surface 270, the screw 800 penetrates the through hole 113 in the functional circuit board 110 and is screwed into the threaded hole 271, the functional circuit board 110 is fastened on the mounting surface 270, and the pressing piece 342 is pressed against the edge of the surface of the functional circuit board 110, so that the functional circuit board 110 is firmly fixed in the cavity of the optical module, and the identification protrusion 280 is disposed on the inner surface of the bottom case 200 and is used for identifying the production date of the optical module and the LOGO of the manufacturing company LOGO.

As shown in fig. 11 and 12, the sliding cover 300 further has an end elastic sheet 351 and a bottom elastic sheet 352, the end elastic sheet 351 and the bottom elastic sheet 352 provide elasticity to firmly lock the optical module in the metal cage 900, and the bottom elastic sheet 351 plays a role of assisting the elasticity when the optical module is unlocked.

As shown in fig. 18, the optical module is further provided with a protective plug 700, the protective plug 700 is inserted into the optical fiber opening 210, and protects the TOSA120 and the ROSA130 when the optical module is in a non-operating state, and is provided with an anti-slip protrusion 710 and a LOGO protrusion 720, the anti-slip protrusion 710 is used for increasing friction force with fingers when the protective plug 700 is pulled out from the optical fiber opening 210, so that the protective plug 700 is pulled out smoothly, and the LOGO protrusion 720 is used for identifying LOGO of a production company of the optical module.

With reference to fig. 1 to 7, the following describes a process of assembling, latching, unlocking, and withdrawing the SFP optical module in the metal cage 900 according to this embodiment:

firstly, in the assembling process, the photoelectric part 100 welded in advance is installed in the bottom case 200, a screw 800 penetrates through the through hole 113 of the functional circuit board 110 and is screwed into a screw hole 271, the rotating shaft 511 of the pull ring 500 is clamped into the pull ring groove 230, the rotating shaft 410 of the unlocking block 400 is clamped into the unlocking block groove 240, the press block 600 is clamped on the TOSA120 and the ROSA130, the TOSA120 and the ROSA130 are fixed in the optical module cavity by matching with the extrusion of the inner surfaces of the assembly groove 260 and the sliding cover 300, the sliding plate 330 of the sliding cover 300 is slid into the sliding groove 252 to guide the sliding cover 300 to be assembled on the bottom case 200, the blocking piece 341 is pushed onto the blocking surface 251 to lock the sliding cover 300 on the bottom case 200, and then the press block is pushed onto the surface edge of the functional circuit board 110 to fix the functional circuit board 110 in the bottom case 200;

the second step is a process of inserting and locking in the metal cage 900, the assembled optical module is pushed into the metal cage 900 in the host device, the limiting surface 220 abuts against the spring plate 920, when the lock 431 is locked in the spring plate lock hole 910, the optical module is stopped being pushed in, the optical module is locked in the metal cage 900, at this time, the gold finger 111 is inserted into the electric connection spring plate in the host device, the functional circuit board 110 and the host device perform transmission of electric signals, then the LC optical fiber connector 1000 is inserted into the optical fiber port 210, and when the locking block 1020 abuts against the locking surface 211, the LC optical fiber connector 1000 is locked in the optical fiber port 210 and performs optical signal transmission with the TOSA120 and the ROSA 130;

the third step is a process of unlocking and exiting the metal cage 900, the unlocking plate 1010 is pressed to drive the locking block 1020 to descend, when the locking block 1020 descends and is separated from the locking surface 211, the LC optical fiber connector 1000 is pulled outwards to exit the optical fiber port 210, then the pull ring 500 is rotated to jack up the stress part 420 to drive the lock head 431 to descend below the spring sheet lock hole 910, the optical module is unlocked, and at the moment, the pull ring 500 is pulled outwards to drive the optical module to exit the metal cage 900;

after the optical module is unlocked and pulled out of the metal cage 900, the external force acting on the pull ring 500 disappears, and the pressing plate 320 jacked up by the force receiving portion 420 starts to release the restoring elastic force due to the external force, so that the unlocking block 400 is restored to the original position, and the pull ring 500 is also driven to be restored to the original position.

The foregoing is considered as illustrative and exemplary only and is not intended to be limiting of the utility model, which is to be understood as being given the full breadth of the appended claims and any and all equivalents thereof. As the present application 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 metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An SFP optical module comprising: the photoelectric part is formed by welding a TOSA and a pin in a ROSA on a welding spot in a functional circuit board, the sliding cover is slid and clamped on the bottom shell to form an optical module cavity for accommodating the photoelectric part, the unlocking block and a pull ring, the pull ring is rotated to drive the unlocking block to rotate and unlock the optical module, and then the pull ring is pulled to drive the optical module to exit from the metal cage,

2. The SFP optical module as claimed in claim 1, wherein the optical module further comprises a pressing block, the pressing block is provided with a circular arc groove and a boss, the circular arc groove and the module groove are matched to clamp the TOSA and the ROSA, and the boss is abutted against the inner surface of the sliding cover, so that the TOSA and the ROSA are fixed in the cavity of the optical module.

3. The SFP optical module according to claim 1, wherein the bottom shell further comprises a chamfer, a mounting surface, a threaded hole and an identification protrusion, the chamfer facilitates the optical module to be inserted into the metal cage smoothly, the functional circuit board is mounted on the mounting surface, a screw is used to penetrate through a through hole in the functional circuit board and screwed into the threaded hole, the functional circuit board is fastened on the mounting surface, and the pressing sheet is pressed against the surface edge of the functional circuit board, so that the functional circuit board is fixed in the cavity of the optical module, and the identification protrusion is disposed on the inner surface of the bottom shell for identifying the production date of the optical module and LOGO of the manufacturing company LOGO.

4. The SFP optical module as claimed in claim 1, wherein the sliding cover further comprises an end spring and a bottom spring, the end spring and the bottom spring provide elastic force to firmly lock the optical module in the metal cage, and the bottom spring acts as an auxiliary elastic force when the optical module is unlocked.

5. The SFP optical module according to claim 1, wherein the optical module further comprises a protection plug, the protection plug is inserted into the optical fiber port to protect the TOSA and the ROSA when the optical module is in the non-operating state, and further comprises an anti-slip protrusion and a LOGO protrusion, the anti-slip protrusion is used for increasing friction force with a finger when the protection plug is pulled out from the optical fiber port to pull out the protection plug smoothly, and the LOGO protrusion is used for identifying a LOGO of a company of manufacturing the optical module.