CN215181035U - Optical module - Google Patents

Abstract

The optical module comprises an upper shell, a lower shell, an optical engine, an optical port bracket and an optical fiber adapter, wherein the upper shell covers the lower shell and forms an accommodating cavity with the lower shell, and the optical engine is arranged in the accommodating cavity; one end of the upper shell is symmetrically provided with a first limiting piece, and one end of the lower shell is symmetrically provided with a second limiting piece; the side surface of the light port bracket facing the upper shell is connected with the upper shell in a pressing way, and the opposite two side surfaces of the light port bracket are fixedly connected with the first limiting piece in a butting way; two side surfaces of the light port bracket, which are connected with the first limiting piece, are respectively provided with a limiting boss, and the limiting bosses are abutted with the second limiting piece; one end of the optical fiber adapter is connected with the optical engine, and the other end of the optical fiber adapter is inserted into the optical port bracket. This application separates light mouthful bracket and lower casing, through first locating part with light mouthful bracket fixed mounting on last casing, has absorbed the installation tolerance of light engine when so installing light mouthful bracket to supreme casing, has solved the problem that light engine installation tolerance is more complicated.

Description

Optical module

Technical Field

The application relates to the technical field of optical fiber communication, in particular to an optical module.

Background

With the development of new services and application modes such as cloud computing, mobile internet, video and the like, the development and progress of the optical communication technology become increasingly important. In the optical communication technology, an optical module is a tool for realizing the interconversion of optical signals and is one of key devices in optical communication equipment, and the transmission rate of the optical module is continuously increased along with the development requirement of the optical communication technology.

An optical module generally includes a circuit board and an optical engine (light emitting module, light receiving module) electrically connected to the circuit board, and the optical engine is mounted with a mounting tolerance. In the high-speed optical module provided by the prior art, a flexible board or a pigtail adapter is generally adopted to absorb the installation tolerance of an optical engine, and meanwhile, a long groove is formed in a circuit board to absorb the installation tolerance. The tail fiber adapter is adopted to absorb the installation tolerance, a fiber coiling frame is generally adopted, the material cost is increased, and the fiber coiling required for assembly also increases the manufacturing difficulty; the mounting tolerance of the light engine is absorbed by adopting a flexible plate mode, so that the light engine is subjected to the bending force of the flexible plate, and the light engine falls off and the like if the light engine is bent too much; the circuit board slotting mode is adopted, the circuit board needs to be fixed on the module shell by glue, the process is complex, and long-term reliability risks exist.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an optical module, which aims to solve the problem that the installation tolerance of a light-absorbing engine is complex when the light engine is arranged in the existing optical module.

The application provides an optical module, includes:

the upper shell is provided with first limiting pieces at one end in a symmetrical mode;

the lower shell is covered on the upper shell, and forms an accommodating cavity with the upper shell; one end of the first limiting piece is symmetrically provided with a first limiting piece;

the light engine is arranged in the accommodating cavity and used for realizing the emission or the reception of light;

the side surface of the light port bracket facing the upper shell is in press fit connection with the upper shell, and the opposite two side surfaces of the light port bracket are fixedly connected with the first limiting piece; two side surfaces connected with the first limiting piece are respectively provided with a limiting boss, and the side surface of the limiting boss facing the optical engine is abutted with the second limiting piece; the side surface of the lower shell, which faces the lower shell, is abutted against the bottom surface of the lower shell;

and one end of the optical fiber adapter is connected with the optical engine, and the other end of the optical fiber adapter is inserted into the optical port bracket.

The optical module comprises an upper shell, a lower shell, an optical engine, an optical port bracket and an optical fiber adapter, wherein the upper shell covers the lower shell and forms an accommodating cavity together with the lower shell; the light engine is arranged in the accommodating cavity and used for realizing the emission or the reception of light; one end of the upper shell is symmetrically provided with a first limiting piece, and one end of the lower shell is symmetrically provided with a second limiting piece; the side surface of the light port bracket facing the upper shell is connected with the upper shell in a pressing mode, and the opposite two side surfaces of the light port bracket are fixedly connected with the first limiting piece so as to fixedly install the light port bracket on the upper shell; the two side surfaces of the light port bracket, which are connected with the first limiting piece, are respectively provided with a limiting boss, and the limiting bosses are abutted with the second limiting piece so as to position the lower shell in the left and right directions; the side surface of the light port bracket facing the lower shell is abutted against the bottom surface of the upper shell; one end of the optical fiber adapter is connected with the optical engine, and the other end of the optical fiber adapter is inserted into the optical port bracket. Install the light engine in the cavity that holds that last casing and lower casing formed, be connected light engine through inside optic fibre and optic fibre adapter, or be connected light engine and optic fibre adapter direct contact rigid connection, because inside optic fibre can not buckle, or the activity is little when optic fibre adapter rigid connection, lead to optic fibre adapter and light engine to have installation tolerance, be difficult for inserting optic fibre adapter in the light mouth bracket, consequently this application separates light mouth bracket and lower casing, pass through glue and the first locating part fixed connection of last casing with light mouth bracket, again with lower casing lid on last casing and light mouth bracket, so when there is installation tolerance in the installation of light engine in holding the cavity, can absorb the installation tolerance of light engine when installing light mouth bracket to last casing, the process is simple, can solve the more complicated problem of light engine installation tolerance.

Drawings

Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal;

FIG. 2 is a schematic diagram of an optical network unit;

fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present disclosure;

fig. 4 is an exploded structural diagram of an optical module according to an embodiment of the present disclosure;

fig. 5 is an assembly diagram of a circuit board, an optical engine, an optical port bracket, and an optical port plug in an optical module according to an embodiment of the present disclosure;

fig. 6 is an exploded schematic view of a circuit board, an optical engine, an optical port bracket and an optical port plug in an optical module according to an embodiment of the present disclosure;

fig. 7 is a schematic partial assembly diagram of an upper shell, a lower shell and an optical port bracket in an optical module according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an optical port bracket in an optical module according to an embodiment of the present disclosure;

fig. 9 is a schematic view of another angle structure of an optical port bracket in an optical module according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an upper housing of an optical module according to an embodiment of the present disclosure;

fig. 11 is a schematic partial assembly diagram of an upper housing, an optical engine, an optical fiber adapter, and an optical port bracket in an optical module according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a lower housing in an optical module according to an embodiment of the present application;

fig. 13 is a schematic view of a partial structure at another angle of a lower housing in an optical module according to an embodiment of the present disclosure;

fig. 14 is a schematic partial assembly diagram of a lower housing, an optical engine, an optical fiber adapter, and an optical port bracket in an optical module according to an embodiment of the present disclosure.

Detailed Description

In order to facilitate the technical solution of the present application, some concepts related to the present application will be described below.

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.

One of the core links of optical fiber communication is the interconversion of optical and electrical signals. The optical fiber communication uses optical signals carrying information to transmit in information transmission equipment such as optical fibers/optical waveguides, and the information transmission with low cost and low loss can be realized by using the passive transmission characteristic of light in the optical fibers/optical waveguides; meanwhile, the information processing device such as a computer uses an electric signal, and in order to establish information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer, it is necessary to perform interconversion between the electric signal and the optical signal.

The optical module realizes the function of interconversion of optical signals and electrical signals in the technical field of optical fiber communication, and the interconversion of the optical signals and the electrical signals is the core function of the optical module. The optical module is electrically connected with an external upper computer through a golden finger on an internal circuit board of the optical module, and the main electrical connection comprises power supply, I2C signals, data signals, grounding and the like; the electrical connection mode realized by the gold finger has become the mainstream connection mode of the optical module industry, and on the basis of the mainstream connection mode, the definition of the pin on the gold finger forms various industry protocols/specifications.

Fig. 1 is a schematic diagram of connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes the interconnection among the optical network terminal 100, the optical module 200, the optical fiber 101 and the network cable 103;

one end of the optical fiber 101 is connected with a far-end server, one end of the network cable 103 is connected with local information processing equipment, and the connection between the local information processing equipment and the far-end server is completed by the connection between the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is made by the optical network terminal 100 having the optical module 200.

An optical port of the optical module 200 is externally accessed to the optical fiber 101, and establishes bidirectional optical signal connection with the optical fiber 101; an electrical port of the optical module 200 is externally connected to the optical network terminal 100, and establishes bidirectional electrical signal connection with the optical network terminal 100; the optical module realizes the interconversion of optical signals and electric signals, thereby realizing the establishment of information connection between the optical fiber and the optical network terminal; specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100, and the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module and input to the optical fiber.

The optical network terminal is provided with an optical module interface 102, which is used for accessing an optical module 200 and establishing bidirectional electric signal connection with the optical module 200; the optical network terminal is provided with a network cable interface 104, which is used for accessing the network cable 103 and establishing bidirectional electric signal connection with the network cable 103; the optical module 200 is connected to the network cable 103 through the optical network terminal 100, specifically, the optical network terminal transmits a signal from the optical module to the network cable and transmits the signal from the network cable to the optical module, and the optical network terminal serves as an upper computer of the optical module to monitor the operation of the optical module.

At this point, a bidirectional signal transmission channel is established between the remote server and the local information processing device through the optical fiber, the optical module, the optical network terminal and the network cable.

Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network terminal is an upper computer of the optical module, provides data signals for the optical module, and receives the data signals from the optical module, and the common upper computer of the optical module also comprises an optical line terminal and the like.

Fig. 2 is a schematic diagram of an optical network terminal structure. As shown in fig. 2, the optical network terminal 100 has a circuit board 105, and a cage 106 is disposed on a surface of the circuit board 105; an electric connector is arranged in the cage 106 and used for connecting an electric port of an optical module such as a golden finger; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a projection such as a fin that increases a heat radiation area.

The optical module 200 is inserted into the optical network terminal, specifically, the electrical port of the optical module is inserted into the electrical connector inside the cage 106, and the optical port of the optical module is connected to the optical fiber 101.

The cage 106 is positioned on the circuit board, and the electrical connector on the circuit board is wrapped in the cage, so that the electrical connector is arranged in the cage; the optical module is inserted into the cage, held by the cage, and the heat generated by the optical module is conducted to the cage 106 and then diffused by the heat sink 107 on the cage.

Fig. 3 is a schematic view of an optical module according to an embodiment of the present disclosure, and fig. 4 is a schematic view of an exploded structure of an optical module according to an embodiment of the present disclosure. As shown in fig. 3 and 4, an optical module 200 provided in the embodiment of the present application includes an upper housing 201, a lower housing 202, an unlocking member 203, a circuit board 300, an optical engine 400, an optical port bracket 500, and an optical port plug 600.

The upper shell 201 is covered on the lower shell 202 to form a wrapping cavity with two openings; the outer contour of the wrapping cavity is generally a square body, and specifically, the lower shell comprises a main plate and two side plates which are positioned at two sides of the main plate and are perpendicular to the main plate; the upper shell comprises a third shell, and the third shell covers the two side plates of the upper shell to form a wrapping cavity; the upper shell can also comprise two side walls which are positioned on two sides of the third shell and are perpendicular to the third shell, and the two side walls are combined with the two side plates to cover the upper shell on the lower shell.

The two openings may be two ends (204, 205) in the same direction, or two openings in different directions; one opening is an electric port 204, and a gold finger of the circuit board extends out of the electric port 204 and is inserted into an upper computer such as an optical network terminal; the other opening is an optical port 205 for external optical fiber access to connect with the optical engine 400 inside the optical module; the optoelectronic devices such as the circuit board 300, the light engine 400, the optical port bracket 500, and the optical port plug 600 are located in the package cavity.

The assembly mode of combining the upper shell and the lower shell is adopted, so that the circuit board 300, the optical engine 400, the optical port bracket 500, the optical port plug 600 and other devices can be conveniently installed in the shells, and the outermost packaging protection shell of the optical module is formed by the upper shell and the lower shell; the upper shell and the lower shell are made of metal materials generally, so that electromagnetic shielding and heat dissipation are facilitated; generally, the housing of the optical module is not made into an integrated component, so that when devices such as a circuit board and the like are assembled, the positioning component, the heat dissipation component and the electromagnetic shielding component cannot be installed, and the production automation is not facilitated.

The unlocking component 203 is located on the outer wall of the wrapping cavity/lower shell 202, and is used for realizing the fixed connection between the optical module and the upper computer or releasing the fixed connection between the optical module and the upper computer.

The unlocking component 203 is provided with a clamping component matched with the upper computer cage; the end of the unlocking component can be pulled to enable the unlocking component to move relatively on the surface of the outer wall; the optical module is inserted into a cage of the upper computer, and the optical module is fixed in the cage of the upper computer by a clamping component of the unlocking component; by pulling the unlocking component, the clamping component of the unlocking component moves along with the unlocking component, so that the connection relation between the clamping component and the upper computer is changed, the clamping relation between the optical module and the upper computer is released, and the optical module can be drawn out from the cage of the upper computer.

The circuit board 300 is provided with circuit traces, electronic components (such as capacitors, resistors, triodes, and MOS transistors), and chips (such as an MCU, a laser driver chip, a limiting amplifier chip, a clock data recovery CDR, a power management chip, and a data processing chip DSP). The circuit board connects the electrical appliances in the optical module together according to the circuit design through circuit wiring to realize the functions of power supply, electrical signal transmission, grounding and the like.

The circuit board is generally a hard circuit board, and the hard circuit board can also realize a bearing effect due to the relatively hard material of the hard circuit board, for example, the hard circuit board can stably bear a chip; when the optical transceiver is positioned on the circuit board, the rigid circuit board can also provide stable bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, and specifically, a metal pin/golden finger is formed on the surface of the tail end of one side of the hard circuit board and is used for being connected with the electric connector; these are not easily implemented with flexible circuit boards.

A flexible circuit board is also used in a part of the optical module to supplement a rigid circuit board; the flexible circuit board is generally used in combination with a rigid circuit board, for example, the rigid circuit board may be connected to the optical transceiver device through the flexible circuit board.

The light engine 400 may be connected to one end of a fiber optic adapter through an internal optical fiber, and the other end of the fiber optic adapter is inserted into the optical port bracket 500 and fixed. Because the internal optical fiber can not be bent, and the size of the internal optical fiber connecting the optical fiber adapter and the optical engine is not easy to grasp, after the optical fiber adapter is connected with the optical engine through the internal optical fiber, the other end of the optical fiber adapter is deviated when being inserted into the optical port bracket 500, so that the installation of the optical fiber adapter is more complicated.

The light engine 400 may also be hard-wired to one end of the fiber optic adapter, i.e., the end face of the light engine is directly connected to one end of the fiber optic adapter, and the other end of the fiber optic adapter is inserted into the optical port bracket 500 and secured therein. When there is a tolerance in the installation of the optical engine, there is a deviation in the insertion of the other end of the fiber optic adapter, which is hard-wired to the optical engine, into the optical port bracket 500, making the installation of the fiber optic adapter more complicated.

In order to solve the above problems, in the present application, the lower housing 202 of the optical module is separated from the optical port bracket 500, and the optical fiber adapter is connected to the optical engine through the internal optical fiber, or after the optical fiber adapter is hard-connected to the optical engine, the optical port bracket 500 is mounted on the lower housing 202, so as to eliminate the mounting tolerance of the optical fiber adapter and the optical engine.

Fig. 5 is an assembly schematic diagram of a circuit board, an optical engine, an optical port bracket, and an opening plug in an optical module according to an embodiment of the present disclosure, and fig. 6 is an assembly exploded schematic diagram of a circuit board, an optical engine, an optical port bracket, and an opening plug in an optical module according to an embodiment of the present disclosure. As shown in fig. 5 and 6, in the optical module provided in the embodiment of the present application, the lower housing 202 is separated from the optical port bracket 500, after the optical engines such as the optical transmit sub-module and the optical receive sub-module are mounted on the circuit board 300, the optical engines are hard-connected to the optical fiber adapter 700, the optical fiber adapter 700 is inserted into the optical port bracket 500, the optical port bracket 500 is mounted to one end of the upper housing 201, and then the lower housing 202 is covered on the upper housing 201, so that the optical port bracket 500 is located at an optical interface formed by the upper housing 201 and the lower housing 202. In this application, light mouthful bracket 500 can absorb the installation tolerance of light engine when installing supreme casing 201, and the process is simple, need not increase material cost, and has long-term reliability risk.

The optical fiber adapter 700 is located at an optical interface formed by the upper shell 201 and the lower shell 202, and is a connecting piece for connecting the optical module and an external optical fiber of the optical module; in addition, in order to connect with an external optical fiber, matching structures are often required to be arranged at the optical interfaces of the upper shell 201 and the lower shell 202. Fiber optic adapters are typically of a standard shape and size to facilitate the insertion of external fiber optic connectors/plugs, and have a plurality of fiber optic interfaces therein, including interfaces for outgoing optical signals and interfaces for incoming optical signals. A common fiber optic connector/plug is an MT-type fiber optic connector (e.g., MPO (Multi-fiber Push On) fiber optic jumper connector). The optical fiber connector is inserted into the optical fiber adapter of the optical module, so that optical signals inside the optical module can be transmitted into the external optical fiber, and optical signals outside the optical module can be transmitted into the optical module.

When the optical module is used, an external optical fiber can be connected with the optical fiber adapter 700 through the optical port bracket 500 to realize the emission or the reception of light; when the optical module is not in use, the optical port plug 600 may be inserted into the optical port bracket 500 to prevent dust from entering the inside of the optical module through the optical port of the optical port bracket 500.

Fig. 7 is a schematic partial assembly diagram of an upper housing, a lower housing, an optical engine, and an optical port bracket in an optical module according to an embodiment of the present disclosure. As shown in fig. 7, a first limiting member 2011 is symmetrically disposed at an end of the upper housing 201 facing the optical port bracket 500, and the first limiting member 2011 protrudes from a left side surface of the upper housing 201; the side of the optical port bracket 500 facing the upper housing 201 is press-fit connected to the upper housing 201, when the upper housing 201 is press-fit on the optical port bracket 500, the first limit part 2011 on the upper housing 201 abuts against the opposite side of the optical port bracket 500, and the first limit part 2011 is adhered to the opposite side of the optical port bracket 500 by glue, so as to fix the optical port bracket 500 to the upper housing 201.

One end of the lower housing 202 facing the optical port bracket 500 is symmetrically provided with second limiting members 2022, two opposite side surfaces of the optical port bracket 500 are respectively provided with a limiting boss 5310, and the side surface of the limiting boss 5310 facing the optical engine 400 is abutted against the second limiting members 2022 to limit the optical port bracket 500 in the left-right direction; the limiting boss 5310 is abutted against the bottom surface of the lower housing 202 toward the side surface of the lower housing 202 to support the optical port bracket 500. That is, the optical port bracket 500 moves from left to right until the limit boss 5310 on the side surface of the optical port bracket 500 contacts the second limit stop 2022 on the lower housing 202.

In the embodiment of the present application, the optical port bracket 500 performs front-back direction limiting through the first limiting member 2011 on the upper housing 201, and is bonded to the optical port bracket 500 through the first limiting member 2011, so as to fix the optical port bracket 500 on the upper housing 201; the lower housing 202 is limited in the left-right direction by a second limiting member 2022 on the lower housing 202, so that the lower housing 202 can be covered on the upper housing 201 and the optical port bracket 500.

Fig. 8 is a schematic structural diagram of an optical port bracket in an optical module according to an embodiment of the present disclosure, and fig. 9 is a schematic structural diagram of another angle of the optical port bracket in the optical module according to the embodiment of the present disclosure. As shown in fig. 8 and 9, the light port bracket 500 includes a first side 510, a second side 520, a third side 530, a fourth side 540, a fifth side 550, and a sixth side 560, the first side 510 faces the light engine 400, and the second side 520 is opposite to the first side 510; the third side 530 and the fourth side 540 are disposed opposite to each other, and the third side 530 is connected to the first side 510 and the second side 520, respectively; the fifth side 550 and the sixth side 560 face the upper housing 201, and the sixth side 560 is recessed in the fifth side 550. That is, the first side 510 is a right side of the optical port bracket 500, the second side 520 is a left side of the optical port bracket 500, the third side 530 is a rear side of the optical port bracket 500, the fourth side 540 is a front side of the optical port bracket 500, the fifth side 550 and the sixth side 560 are both upper sides of the optical port bracket 500, and a distance from the fifth side 550 to the lower housing 202 is greater than a distance from the sixth side 560 to the lower housing 202.

The optical port bracket 500 has a mounting hole 5110 on the first side 510 and a slot 5210 on the second side 520, the slot 5210 is connected to the mounting hole 5110, and the optical fiber adapter 700 is inserted into the slot 5210 through the mounting hole 5110, so that the optical fiber adapter 700 is inserted into the optical port bracket 500. The slot 5210 in the port bracket 500 is open so that an external optical fiber can be inserted into the port bracket 500 through the slot 5210.

Fig. 10 is a schematic structural diagram of an upper housing of an optical module according to an embodiment of the present application, and fig. 11 is a schematic partial assembly diagram of the upper housing, an optical engine, an optical fiber adapter, and an optical port bracket of the optical module according to the embodiment of the present application. As shown in fig. 10 and 11, the first stopper 2011 provided on the upper case 201 protrudes from the left end surface 2013 of the upper case 201, and extends in the left-right direction from the left end surface 2013 of the upper case 201. When the upper housing 201 is fixedly connected to the optical port bracket 500, the optical port bracket 500 is disposed between the two first limiting members 2011, and the opposite side surfaces of the two first limiting members 2011 are abutted to the third side surface 530 and the fourth side surface 540 of the optical port bracket 500, so as to limit the optical port bracket 500 in the front-back direction through the first limiting members 2011; after the side surface of the first stopper 2011 contacts the third side surface 530 and the fourth side surface 540 of the optical port bracket 500, glue is injected into the gap between the side surfaces, and the side surface of the first stopper 2011 and the third side surface 530 and the fourth side surface 540 of the optical port bracket 500 are bonded by the glue, so that the optical port bracket 500 is fixed on the upper housing 201.

The port bracket 500 further includes a seventh side 570, and the seventh side 570 is connected to the fifth side 550 and the sixth side 560 such that the seventh side 570 is parallel to the first side 510. When the upper housing 201 is press-fit connected to the upper side surface of the optical port bracket 500, the inner bottom surface of the upper housing 201 abuts against the sixth side surface 560 of the optical port bracket 500, and the left side surface 2013 of the upper housing 201 abuts against the seventh side surface 570 of the optical port bracket 500, so that the fifth side surface 550 of the optical port bracket 500 is flush with the upper top surface of the upper housing 201.

In the embodiment of the present application, the optical port bracket 500 is first placed between the two first limiting members 2011 of the upper housing 201, and then the optical port bracket 500 is moved from left to right, so that the third side surface 530 and the fourth side surface 540 of the optical port bracket 500 are in contact with the inner side surfaces of the two first limiting members 2011; then, the optical port bracket 500 continues to move rightwards until the seventh side surface 570 of the optical port bracket 500 abuts against the left side end surface 2013 of the upper shell 201; finally, glue is injected between the contact surfaces of the optical port bracket 500 and the first limit part 2011, and the optical port bracket 500 is fixed on the upper shell 201 through the glue.

A groove 2014 is formed in a side of the first limiting member 2011, which is opposite to the third side 530, wherein the groove 2014 extends from a rear side of the first limiting member 2011 to a front side of the first limiting member 2011, and a dimension of the groove 2014 in a front-back direction is smaller than a dimension of the first limiting member 2011 in the front-back direction. The size of the left and right directions of the groove 2014 is slightly smaller than the size of the front and back directions of the first limiting member 2011, the spring of the unlocking component 203 is arranged in the groove 2014, and two ends of the spring are abutted to the side walls opposite to the groove 2014.

The two unlocking handles of the unlocking part 203 are both provided with elastic pieces 2031, and the elastic pieces 2031 are arranged oppositely; the side wall of the groove 2014 facing the lower shell 202 is provided with a downward opening, and when the unlocking component 203 is assembled on the upper shell 201, the elastic sheet 2031 on the unlocking handle is embedded into the groove 2014 of the upper shell 201 through the downward opening and is in contact with the spring in the groove 2014. When the unlocking component 203 moves left and right, the elastic sheet 2031 moves left and right in the groove 2014 to drive the spring to stretch or compress, so that the fixed connection between the optical module and the upper computer is realized, or the fixed connection between the optical module and the upper computer is released.

In the embodiment of the present application, a limiting boss 5310 is disposed on the third side surface 530 of the optical port bracket 500, and the limiting boss 5310 extends along the front-back direction in a direction away from the third side surface 530, so that the limiting boss 5310 protrudes from the third side surface 530; similarly, the fourth side 540 of the optical port bracket 500 is provided with a limiting boss, and the limiting boss extends along the front-back direction to a direction far away from the fourth side 540, so that the limiting boss protrudes from the fourth side 540.

Fig. 12 is a schematic structural diagram of a lower shell in an optical module provided in an embodiment of the present application, and fig. 13 is a schematic structural diagram of a part of the lower shell in another angle in the optical module provided in the embodiment of the present application. As shown in fig. 12 and 13, the second stoppers 2022 are symmetrically disposed on the bottom surface 2021 of the lower casing 202, and the two second stoppers 2022 can be independently disposed on the bottom surface 2021 of the lower casing 202 without other devices between the two second stoppers 2021 and the left end surface of the lower casing 202, so that the left side of the lower casing 202 is open. When the lower housing 202 is covered on the upper housing 201 and the optical port bracket 500, the optical port bracket 500 is placed between the two second stoppers 2022, and then the lower housing 202 is covered on the upper housing 201 from top to bottom, so that the limiting bosses on the third side 530 and the fourth side 540 of the optical port bracket 500 are abutted against the second stoppers 2022 on the lower housing 202, and the side of the optical port bracket 500 facing the lower housing 202 is abutted against the bottom 2021 of the lower housing 202, so as to limit the optical port bracket 500 in the left-right direction and the up-down direction.

The side surface of the second limiting member 2022 facing the optical port bracket 500 is a plane, so that when the lower housing 202 is covered on the optical port bracket 500, the side surface of the second limiting member 2022 facing the optical port bracket 500 abuts against the limiting boss on the optical port bracket 500 to position the lower housing 202 in the left-right direction. The opposite side surfaces of the two second stoppers 2022 are also flat surfaces, so that after the optical port bracket 500 is inserted into the lower housing 202, the opposite side surfaces of the two second stoppers 2022 can abut against the third side surface 530 and the fourth side surface 540 of the optical port bracket 500.

The opposite side surfaces of the two second stoppers 2022 may also have a gap with the third side surface 530 and the fourth side surface 540 of the optical port bracket 500, so as to facilitate the insertion of the optical port bracket 500 into the lower housing 202.

In the embodiment of the present application, two opposite sidewalls of the lower housing 202 are further provided with third limiting members 2024, the third limiting members 2024 protrude from the sidewalls of the lower housing 202, and one side of the third limiting members 2024 facing the optical port bracket 500 is a plane, when the lower housing 202 is covered on the optical port bracket 500, the first side surface 510 of the optical port bracket 500 abuts against the third limiting members 2024, so as to position the lower housing 202 in the left-right direction through the third limiting members 2024.

Fig. 14 is a schematic partial assembly diagram of a lower housing, an optical engine, an optical fiber adapter, and an optical port bracket in an optical module according to an embodiment of the present disclosure. As shown in fig. 14, when the lower housing 202 is covered on the light port bracket 500, the light port bracket 500 is placed between the two second stoppers 2022 of the lower housing 202, such that the side of the light port bracket 500 facing the light engine 400 is aligned with the side of the second stoppers 2022 facing away from the light engine 400, and the first side 510 of the light port bracket 500 is aligned with the third stoppers 2024 on the lower housing 202; then, the lower housing 202 is moved downward until the side of the optical port bracket 500 facing the lower housing 202 abuts against the bottom surface 2021 of the lower housing 202, the side of the second stopper 2022 facing away from the light engine 400 abuts against the side of the upper stopper boss of the optical port bracket 500 facing the light engine 400, and the first side 510 of the optical port bracket 500 abuts against the third stopper 2024 of the lower housing 202.

The side surfaces of the limiting bosses on the third side surface 530 and the fourth side surface 540 of the optical port bracket 500 facing the upper case 201 are flat surfaces, and when the lower case 202 is covered on the upper case 201, the side surface of the first limiting member 2011 on the upper case 201 facing the lower case 202 abuts against the side surface of the limiting bosses facing the upper case 201, so that the first limiting member 2011 supports and fixes the lower case 202.

In this embodiment, the upper housing 201 is further symmetrically provided with a limiting post 2012, and the limiting post 2012 is located on a sidewall of the upper housing 201, and may be connected to the first limiting member 2011 or may be independently disposed on the sidewall of the upper housing 201. Two opposite side walls of the lower housing 202 are provided with first limiting surfaces 2023, the first limiting surfaces 2023 face the optical port bracket 500, and the dimension of the first limiting surfaces 2023 in the front-back direction is consistent with the dimension of the side walls of the lower housing 202 in the front-back direction. When the lower case 202 is covered on the upper case 201, the limiting posts 2012 on the upper case 201 are abutted against the first limiting surface 2023 on the lower case 202, so as to limit the lower case 202 in the left-right direction through the limiting posts 2012.

The two opposite side walls of the lower case 202 are further provided with a second limiting surface 2025, the second limiting surface 2025 faces the upper case 201, the first limiting surface 2023 is connected with the second limiting surface 2025, so that when the lower case 202 is covered on the upper case 201, the side surface of the upper case 201 facing the first limiting member 2011 of the lower case 202 and the side surface of the limiting post 2012 of the lower case 202 are both abutted against the second limiting surface 2025, so as to support and fix the lower case 202 through the first limiting member 2011 and the limiting post 2012.

In the present embodiment, the optical engine 400 is first mounted on the circuit board 300, and then the fiber optic adapter 700 is connected to the optical engine 400 through an internal optical fiber, or the fiber optic adapter 700 is hard-wired to the optical engine 400; then, the optical port bracket 500 is placed between the two first stoppers 2011 of the upper housing 201, and the upper housing 201 is moved, so that the first side surface 510 of the optical port bracket 500 contacts with the left end surface 2013 of the upper housing 201, and the third side surface 530 and the fourth side surface 540 of the optical port bracket 500 abut against the two first stoppers 2011 of the upper housing 201; then, injecting glue into a contact gap between the optical port bracket 500 and the first limit part 2011, and fixing the optical port bracket 500 on the upper shell 201 through the glue; then, the lower housing 202 is moved, the side of the second stopper 2022 on the lower housing 202 facing away from the light engine 400 is aligned with the side of the stopper boss on the port bracket 500 facing toward the light engine 400, the third stopper 2024 on the lower housing 202 is aligned with the first side 510 of the port bracket 500, the lower housing 202 is moved until the bottom 2021 of the lower housing 202 contacts the side of the port bracket 500 facing toward the lower housing 202, the side of the first stopper 2011 on the upper housing 201 facing toward the lower housing 202 contacts the side of the second stopper 2022 on the lower housing 202 facing toward the upper housing 201, and the stopper post 2012 on the upper housing 201 contacts the first stopper 2023 and the second stopper 2025 on the lower housing 202; then the spring is embedded in the groove 2014 of the first limit part 2011 on the upper shell 201; then, the unlocking handle of the unlocking member 203 is sleeved outside the upper housing 201 and the lower housing 202, so that the elastic piece 2031 on the unlocking handle is inserted into the groove 2014 of the first limiting member 2011 and connected with the spring. Through the above installation manner, the optical port bracket 500 is fixedly installed at the optical port formed by the upper housing 201 and the lower housing 202.

The optical module comprises an upper shell, a lower shell, an optical engine, an optical port bracket and an optical fiber adapter, wherein the upper shell covers the lower shell and forms an accommodating cavity together with the lower shell; the light engine is arranged in the accommodating cavity and used for realizing the emission or the reception of light; one end of the upper shell is symmetrically provided with first limiting parts, and one end of the lower shell is symmetrically provided with second limiting parts; the side surface of the light port bracket facing the upper shell is connected with the upper shell in a pressing mode, and the opposite two side surfaces of the light port bracket are fixedly connected with the first limiting piece so as to fixedly install the light port bracket on the upper shell; the two side surfaces of the light port bracket, which are abutted against the first limiting piece, are respectively provided with a limiting boss, and the limiting bosses are abutted against the second limiting piece so as to position the lower shell in the left and right directions; one end of the optical fiber adapter is connected with the optical engine, and the other end of the optical fiber adapter is inserted into the optical port bracket. Install the light engine in the cavity that holds that last casing and lower casing formed, be connected the light engine through inside optic fibre and optic fibre adapter, or be connected the light engine and optic fibre adapter direct contact rigid coupling, because inside optic fibre can not buckle, or the activity is little when optic fibre adapter rigid coupling, lead to optic fibre adapter and light engine to have installation tolerance, be difficult for inserting optic fibre adapter in the light mouth bracket, consequently this application separates light mouth bracket and lower casing, pass through glue and the first locating part fixed connection on the last casing with the relative both sides face of light mouth bracket, so when the installation has installation tolerance in holding the cavity, can absorb the installation tolerance of light engine when installing light mouth bracket to last casing, the process is simple, the more complicated problem of light engine installation tolerance has been solved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A light module, comprising:

the upper shell is provided with first limiting pieces at one end in a symmetrical mode;

the lower shell is covered on the upper shell, and forms an accommodating cavity with the upper shell; one end of the first limiting piece is symmetrically provided with a first limiting piece;

the light engine is arranged in the accommodating cavity and used for realizing the emission or the reception of light;

the side surface of the light port bracket facing the upper shell is in press fit connection with the upper shell, and the opposite two side surfaces of the light port bracket are fixedly connected with the first limiting piece; two side surfaces connected with the first limiting piece are respectively provided with a limiting boss, and the side surface of the limiting boss facing the optical engine is abutted with the second limiting piece; the side surface of the lower shell, which faces the lower shell, is abutted against the bottom surface of the lower shell;

and one end of the optical fiber adapter is connected with the optical engine, and the other end of the optical fiber adapter is inserted into the optical port bracket.

2. The light module as recited in claim 1 wherein the light port bracket comprises a first side facing the light engine, a second side opposite the first side, a third side, a fourth side, a fifth side, and a sixth side; the third side surface and the fourth side surface are arranged oppositely, and the third side surface is respectively connected with the first side surface and the second side surface; the fifth side surface and the sixth side surface face the upper shell, and the sixth side surface is recessed in the fifth side surface;

the third side with all be provided with spacing boss on the fourth side, spacing boss by the second side extends to first side, just spacing boss left and right direction's size is less than third side left and right direction's size.

3. The optical module of claim 2, wherein the first side surface has a mounting hole, the second side surface has a slot communicating with the mounting hole, and the fiber optic adapter is inserted into the slot through the mounting hole.

4. The optical module of claim 2, wherein a side of the second position-limiting member facing away from the optical engine abuts against the position-limiting boss, and opposite side walls of the two second position-limiting members abut against a third side and a fourth side of the optical port bracket.

5. The optical module according to claim 4, wherein the second stopper abuts against the first stopper toward a side surface of the upper housing.

6. The optical module according to claim 2, wherein a third stopper is disposed on two opposite sidewalls of the lower housing, and a first side surface of the optical port bracket abuts against the third stopper.

7. The optical module of claim 2, wherein the optical port bracket further comprises a seventh side surface, the seventh side surface is connected with the fifth side surface and the sixth side surface, and a side surface of the upper housing facing the optical port bracket abuts against the seventh side surface.

8. The optical module according to claim 1, wherein the upper housing is symmetrically provided with a limiting post, two opposite side walls of the lower housing are provided with a first limiting surface, the first limiting surface faces the optical port bracket, and the limiting post abuts against the first limiting surface.

9. The optical module according to claim 8, wherein a second limiting surface is further disposed on two opposite sidewalls of the lower housing, the second limiting surface faces the upper housing, the first limiting surface is connected to the second limiting surface, and both a side surface of the first limiting member facing the lower housing and a side surface of the limiting post facing the lower housing abut against the second limiting surface.

10. The optical module according to claim 1, further comprising an unlocking member, wherein an elastic piece is disposed on an unlocking handle of the unlocking member, a groove is disposed on a side surface of the first stopper facing away from the optical port bracket, and the elastic piece is inserted into the groove.

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