CN213091952U

CN213091952U - Optical module

Info

Publication number: CN213091952U
Application number: CN202021912346.6U
Authority: CN
Inventors: 王凤来; 崔伟; 岳春云
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-30
Anticipated expiration: 2030-09-04

Abstract

A light module includes a package cavity and an unlocker. The unlocker comprises a side arm. The side arm comprises an inclined structure, the tail end of the side arm is provided with a first bulge, and the first bulge is located on the outer wall of the wrapping cavity. The outer wall of the wrapping cavity is provided with a second groove. The second groove is arranged in the first groove, and a return spring is arranged in the second groove. The return spring is in contact with an inner surface of the inclined structure. The first bulge and the surface adjacent to the inclined structure are inclined surfaces. The inclined plane, the front end is more sunken for the end, by the front end to the end contact of tongue piece with the host computer in proper order, realize tongue piece jack-up. In the application, the tail end of the side arm is provided with the first bulge, one surface of the first bulge is an inclined plane, the front end of the inclined plane is more concave relative to the tail end of the inclined plane, and when the handle is not pulled, no external force pushes the tongue piece to jack up, so that the connection between the optical module and the upper computer is realized; when the handle is pulled, the tongue piece sequentially contacts with the front end to the tail end of the inclined surface under the action of external force, and the resolution force of the external force pushes the tongue piece to jack up so as to release the connection between the optical module and the upper computer.

Description

Optical module

Technical Field

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

Background

Conventional light modules include an unlocking feature. The unblock structure can make the optical module can be blocked by the interior bayonet catch in the cage and prevent to loosen and take off when inserting the cage of host computer, avoids transmission signal's interrupt, also can relax when needs take out extract from the cage moreover.

SUMMERY OF THE UTILITY MODEL

The application provides an optical module, which realizes or removes fixed connection between the optical module and an upper computer.

A light module, comprising:

the lower shell and the upper shell form a packaging cavity;

the unlocking component is positioned on the outer wall of the packaging cavity and used for realizing or releasing the fixed connection between the optical module and the upper computer;

the unlocking component comprises a handle and an unlocking device;

the front end of the unlocking device is connected with the handle and comprises side arms and a cross arm for connecting the two side arms;

the side arm comprises an inclined structure, the tail end of the side arm is provided with a first bulge, and the first bulge is positioned on the outer wall of the wrapping cavity;

the outer wall of the wrapping cavity is provided with a first groove and a second groove;

the inclined structure slides along the first groove;

the second groove is arranged in the first groove, is more concave relative to the first groove, and is internally provided with a return spring;

the return spring is contacted with the inner surface of the inclined structure;

the first bulge is connected with the tail end of the inclined structure, and one surface adjacent to the tail end of the inclined structure is an inclined surface;

the inclined plane, the front end is more sunken for the end, by the front end to the end contact of tongue piece with the host computer in proper order, realize tongue piece jack-up.

Has the advantages that: the application provides an optical module, including lower casing and last casing formation parcel cavity and the unblock part that is located parcel cavity outer wall. The unlocking component is used for realizing or releasing connection between the optical module and the upper computer. The unlocking member includes a handle and an unlocking device. The front end of the unlocking device is connected with the handle and comprises side arms and a cross arm connected with the two side arms. The side arm comprises an inclined structure, the tail end of the side arm is provided with a first bulge, and the first bulge is located on the outer wall of the wrapping cavity. The outer wall of parcel cavity is provided with first recess and second recess. The ramp structure slides along the first groove. The second groove is arranged in the first groove, is more sunken relative to the first groove, and is internally provided with a return spring. The return spring is in contact with an inner surface of the inclined structure. The first bulge is connected with the tail end of the inclined structure, and one surface adjacent to the tail end of the inclined structure is an inclined surface. The inclined plane, the front end is more sunken for the end, by the front end to the end contact of tongue piece with the host computer in proper order, realize tongue piece jack-up. When the handle is not pulled, the tongue piece of the upper computer is in contact with the front end of the inclined plane, no external force pushes the tongue piece to jack up, and the tongue piece is locked with the unlocking component, so that the optical module is fixedly connected with the upper computer. When the handle is pulled, external force is decomposed into force of the vertical inclined surface and force of the parallel inclined surface on the inclined surface, the force of the parallel inclined surface can pull the tongue piece to be sequentially contacted with the front end of the inclined surface and the tail end of the inclined surface, the force of the vertical inclined surface pushes the tongue piece to jack up, the tongue piece is unlocked with the unlocking component, and fixed connection between the optical module and the upper computer is achieved. In the application, the tail end of the side arm is provided with the first bulge, one surface of the first bulge is an inclined plane, the front end of the inclined plane is more concave relative to the tail end of the inclined plane, when the handle is not pulled, the tongue piece is in contact with the front end of the inclined plane, no external force pushes the tongue piece to jack up, and the optical module is fixedly connected with the upper computer; when the handle is pulled, the tongue piece sequentially contacts with the front end to the tail end of the inclined surface under the action of external force, the resolution force of the external force pushes the tongue piece to jack up, and the fixed connection between the optical module and the upper computer is released.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

fig. 2 is a schematic structural diagram of an optical network terminal;

FIG. 3 is a schematic structural view of a cage provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of an optical module according to an embodiment of the present application;

FIG. 5 is a schematic diagram of an exploded structure of an optical module according to an embodiment of the present application;

fig. 6 is a schematic structural view of an unlocking member and a package cavity provided in the embodiment of the present application;

fig. 7 is a planar view of a light module provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of an unlocking component provided in an embodiment of the present application;

FIG. 9 is a partial cross-sectional view of the light module and cage shown without the handle pulled in accordance with an embodiment of the present application;

FIG. 10 is a partial cross-sectional view of the light module and cage when the handle is pulled as provided in the embodiments of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

In the following, some embodiments of the present application will be described in detail with reference to the drawings, and features in the following examples and examples may be combined with each other without conflict.

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 optical module realizes optical connection with external optical fibers through an optical interface, the external optical fibers are connected in various ways, and various optical fiber connector types are derived; the method is characterized in that the electric connection is realized by using a golden finger at an electric interface, which becomes the mainstream connection mode of the optical module industry, and on the basis, the definition of pins on the golden finger forms various industry protocols/specifications; the optical connection mode realized by adopting the optical interface and the optical fiber connector becomes the mainstream connection mode of the optical module industry, on the basis, the optical fiber connector also forms various industry standards, such as an LC interface, an SC interface, an MPO interface and the like, the optical interface of the optical module also makes adaptive structural design aiming at the optical fiber connector, and the optical fiber adapters arranged at the optical interface are various.

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 interface of the optical module 200 is externally accessed to the optical fiber 101, and establishes bidirectional optical signal connection with the optical fiber 101; the electrical interface of the optical module 200 is externally connected to the optical network terminal 100, and establishes a bidirectional electrical signal connection with the optical network terminal 100; bidirectional interconversion of optical signals and electric signals is realized inside the optical module, so that information connection is established between the optical fiber and the optical network terminal; specifically, the optical signal from the optical fiber 101 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 101.

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 has a network cable interface 104, which is used for accessing the network cable 103 and establishing a bidirectional electrical signal connection (generally, an electrical signal of an ethernet protocol, which is different from an electrical signal used by an optical module in protocol/type) 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. 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 a bidirectional signal transmission channel is established between the remote server and the local information processing equipment through the optical fiber, the optical module, the optical network terminal and a network cable.

Common local information processing apparatuses include routers, home switches, electronic computers, and the like; common optical network terminals include an optical network unit ONU, an optical line terminal OLT, a data center server, a data center switch, 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 electrical connector is arranged in the cage 106 and used for accessing an electrical interface (such as a gold finger) of the optical module; 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 an optical network terminal, the electrical interface of the optical module is inserted into the electrical connector inside the cage 106, and the optical interface 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 structural diagram of a cage according to an embodiment of the present disclosure. As shown in fig. 3, the cage 106 provided in the embodiment of the present application is provided with tongues 1061 on two opposite sides thereof. The tongue 1061 has a fixed end at the front end and a movable end at the rear end. The tongue 1061 is angled at an obtuse angle relative to the side of the cage 106.

Fig. 4 is a schematic structural diagram of an optical module provided in an embodiment of the present application, and fig. 5 is an exploded structural diagram of the optical module provided in the embodiment of the present application. As shown in fig. 4 and 5, 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, a lens assembly 400, an optical fiber array 500, and an optical fiber adapter 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 cover plate, and the cover plate covers two side plates of the upper shell to form a wrapping cavity; the upper shell can also comprise two side walls which are positioned at two sides of the cover plate and are perpendicular to the cover plate, and the two side walls are combined with the two side plates to realize that the upper shell covers the lower shell.

The two openings may be two openings (204, 205) located at the same end of the optical module, or two openings located at different ends of the optical module; one of the openings is an electrical interface 204, and a gold finger of the circuit board extends out of the electrical interface 204 and is inserted into an upper computer such as an optical network terminal; the other opening is the optical interface 205 where the fiber optic adapter 600 inside the optical module is located for connection with an external fiber optic connector (external optical fiber); the photoelectric devices such as the circuit board 300, the lens assembly 400, the optical fiber array 500 and the optical fiber adapter 600 are positioned in the packaging cavity.

The assembly mode of combining the upper shell and the lower shell is adopted, so that the circuit board 300, the lens assembly 400, the optical fiber array 500, the optical fiber adapter 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, and the integrated housing is not beneficial to the assembly of devices in the housing.

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 a light emitting chip LD, a driving chip LDD, a light receiving chip PD, a transimpedance amplifier chip TIA, a limiting amplifier chip LA, and a microprocessor chip MCU, wherein the light emitting chip and the light receiving chip are directly mounted on the circuit board of the optical module, and such a configuration is referred to as cob (chip on board) package in the industry.

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 lens component 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 common rigid circuit board is a printed circuit board, PCB.

Optical modules sometimes use flexible circuit boards as a complement to rigid circuit boards; flexible circuit boards are commonly used in conjunction with rigid circuit boards.

The lens assembly 400 is disposed on the circuit board 300, and is covered above the optical chip (the optical chip mainly refers to a light emitting chip, a driving chip, a light receiving chip, a transimpedance amplifier chip, an amplitude limiting amplifier chip, and other chips related to a photoelectric conversion function) in a cover-and-buckle manner, the lens assembly 400 and the circuit board 300 form a cavity for wrapping the light emitting chip, the light receiving chip, and other optical chips, and the lens assembly 400 and the circuit board 300 together form a structure for packaging the optical chip. Light emitted from the light emitting chip is reflected by the lens assembly 400 and enters the optical fiber array 400, light from the optical fiber array 400 is reflected by the lens assembly 400 and enters the light receiving chip, and the lens assembly establishes mutual optical connection between the light emitting chip and the optical fiber array. The lens assembly not only serves to seal the optical chip, but also to establish optical connections between the optical chip and the optical fiber array. Lens assembly 400 may be integrally formed from a polymer material using an injection molding process. Specifically, the lens assembly 400 is made of a material having a good light transmittance, such as PEI (Polyetherimide) plastic (Ultem series). Because all of the beam spreading elements in lens assembly 400 are formed from the same single sheet of polymer material, the number of molding dies and manufacturing costs and complexity can be significantly reduced. Meanwhile, the lens assembly 400 structure provided by the embodiment of the application only needs to adjust the positions of the incident light beam and the optical fiber, and is simple to install and debug.

Optical fiber array 500 establishes optical connection between one end and lens assembly 400 and optical connection between the other end and fiber optic adapter 600. The optical fiber array is composed of a plurality of optical fibers, transmits light from the lens assembly to the optical fiber adapter to send out optical signals to the outside, transmits the light from the optical fiber adapter to the lens assembly, and receives the optical signals from the outside of the optical module. The optical fiber array and the lens component are provided with a good optical coupling structure design, multiple paths of converged light from the lens component are incident into multiple paths of optical fibers of the optical fiber array, and the optical structure of the lens component is utilized to realize optical connection with the light emitting chip; multiple paths of light from the optical fiber array are incident into the lens assembly, and optical connection with the light receiving chip is realized by the optical structure of the lens assembly. The optical fiber array and the lens component are in good fixing structure design, and the optical fiber array and the lens component can be relatively fixed, so that the lens component and the circuit board are relatively fixed, and the optical fiber array and the lens component are relatively fixed.

The optical fiber adapter 600 is located at an optical interface formed by the upper and lower shells and is a connecting piece for connecting the optical module with an optical fiber connector (optical fiber) outside the optical module; in addition, in order to connect with an external optical fiber connector, matching structures are often required to be arranged on the upper and lower housings and at the optical interface. 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.

Fig. 6 is a schematic structural view of an unlocking member and a package cavity provided in the embodiment of the present application. Fig. 7 is a planar view of an optical module according to an embodiment of the present application. Fig. 8 is a schematic structural diagram of an unlocking component provided in an embodiment of the present application. FIG. 9 is a partial cross-sectional view of the light module and cage shown without the handle pulled in accordance with an embodiment of the present application. FIG. 10 is a partial cross-sectional view of the light module and cage when the handle is pulled as provided in the embodiments of the present application. As shown in fig. 6-10, in the present embodiment, the outer wall of the package cavity is provided with a first groove 206, and the unlocking member includes a handle 2031 and an unlocking means 2032. In particular, the method comprises the following steps of,

the first groove 206 is disposed on the outer wall of the covering cavity formed by the upper housing 201 covering the lower housing 202, and is used for placing the unlocking device 2032. Specifically, the outer wall of the upper housing 201 and the outer wall of the lower housing 202 form an outer wall of the packaging cavity, and the first groove 206 is disposed on the outer wall of the packaging cavity.

Also disposed within the first recess 206 are a return spring 2061, a second recess 2062, and a second protrusion 2063. In particular, the method comprises the following steps of,

a return spring 2061 disposed in the second recess 2062 is provided for returning the lock release 2032. When the handle 2031 is not pulled, the return spring 2061 is not stressed, and the return spring 2061 is in a natural extension state. When the handle 2031 is pulled to release the fixed connection between the optical module and the upper computer, the unlocking means 2032 slides along the first groove 206 toward the handle 2031, the return spring 2061 is stressed, and the return spring 2061 is in a compressed state. When the handle 2031 is not pulled, the return spring 2061 is no longer stressed, the return spring 2061 is restored to the natural extension state from the compression state, and the return spring 2061 pushes the unlocking device 2032 to be restored.

The second grooves 2062 are more concave relative to the first grooves 206. The second recess 2062 is more recessed relative to the first recess 206 to prevent the spring 2061 from easily escaping the second recess 2062 when compressed.

A second protrusion 2063 is provided at the front end of the second groove 2062 for preventing the return spring 2061 from passing through the second groove 2062 from the front end of the second groove 2062.

A handle 2031 is connected to the front end of the lock release 2032 for pulling the lock release 2032 to slide along the first groove 206. Specifically, when the handle 2031 is not pulled, the end of the lock release 2032 is located at the end of the first groove 206; when handle 2031 is pulled, the end of the lock release 2032 slides along the first groove 206 from the end of the first groove 206 to the front end of the first groove 206.

The lock release 2032, which comprises a connecting portion 203211 and an inclined structure 203212, is provided with a first protrusion 2033 at the end. Specifically, the lock release 2032 comprises two side arms 20321 and a cross arm 20322 connecting the two side arms 20321. The two side arms 20321 are located on the outer wall of the package cavity, symmetrically arranged along the cross arm 20322, and each include a connecting portion 203211 and an inclined structure 203212, and the end is provided with a first protrusion 2033. The front end of the connecting part 203211 is connected to the end of the handle 2031, the end of the connecting part 203211 is connected to the front end of the inclined structure 203212, and the end of the inclined structure 203212 is connected to the first protrusion 2033.

All the components of the two side arms 20321 are arranged completely symmetrically. Specifically, all the components in the two side arms have the same shape, size, position and connection relationship with other components. For example, when one side arm 20321 comprises a link 203211 and a ramp structure 203212 and the tip is provided with a first protrusion 2033, the other side arm also comprises a link and a ramp structure and the tip is also provided with a first protrusion.

The inclined structure 203212 has an inner surface in contact with the return spring 2061, the inner surface being parallel to the inner surface of the connecting portion 203211, the outer surface being at an angle of greater than 180 ° and less than 270 ° to the outer surface of the connecting portion 203211, and the distal end being more concave relative to the front end.

The included angle between the outer surface of the inclined structure 203212 and the outer surface of the connecting portion 203211 is larger than 180 degrees and smaller than 270 degrees, and the tail end of the tilting mechanism 20322 is more concave relative to the front end of the inclined structure 203212, so that the tilting mechanism 20322 is attached to the tongue 1061 of the upper computer as far as possible when the handle 2031 is not pulled.

The first protrusion 2033, which is connected to the end of the inclined structure 203212, includes a first side 20331, a second side 20332, a third side 20333, a fourth side 20334, and an inclined surface 20335. Specifically, the end of the first side 20331 is connected to the end of the inclined surface 20335, the end of the second side 20332 is connected to the end of the first side 20331, the end of the third side 20333 is connected to the end of the second side 20332, the end of the fourth side 20334 is connected to the end of the third side 20333, and the end of the fourth side 20334 is connected to the end of the inclined surface 20335.

The first side 20331 is connected to the inside of the angled structure 203212. The first side 20331 is welded to the inside of the angled structure 203212. The first side 20331 may or may not be parallel to the inner side of the inclined structure 203212. The present application is not limited and may be tailored to specific situations.

The second side 20332 extends outward to provide a stop 20336. The stop 20336 is used to fix the return spring 2061. Specifically, the baffle 20336 is provided with a third protrusion on a surface far from the third side 20333. And a third protrusion for fixing the return spring 2061. One end of the return spring 2061 is inserted into the third projection. The return spring 2061 may or may not be welded to the stop 20336. Both of these connection means may connect the return spring 2061 to the stop 20336.

The third side 20333 slides along the first groove 206. Specifically, the third side 20333 may be parallel to the first groove 206, or may be non-parallel to the first groove 206. When the third side 20333 is parallel to the first groove 206, the friction force between the third side 20333 and the first groove 206 is reduced and the third side 20333 and the first groove 206 are prevented from being worn when the third side 20333 slides along the first groove 206. When the third side 20333 is not parallel to the first groove 206, the friction force between the third side 20333 and the first groove 206 is increased and the third side 20333 and the first groove 206 are easily worn when the third side 20333 slides along the first groove 206. However, neither of the above two situations will affect the sliding of the third side 20333 along the first groove 206, and therefore both can be realized. The present application is not limited and may be tailored to specific situations.

The inclined surface 20335 is a surface of the first protrusion 2033 adjacent to the tail end of the inclined structure 203212, the front end of the inclined surface is recessed relative to the tail end, and the inclined surface contacts with the tongue 1061 of the upper computer in sequence from the front end to the tail end to jack up the tongue. Specifically, when the handle is not pulled, the tongue piece 1061 of the upper computer is in contact with the front end of the inclined surface 20335, no external force pushes the tongue piece 1061 to jack up, the tongue piece 1061 is locked with the unlocking component 203, and the optical module is fixedly connected with the upper computer. When the handle 2031 is pulled, an external force is decomposed into a force upward from the inclined surface 20335 and a force parallel to the inclined surface 20335 on the inclined surface 20335, the force parallel to the inclined surface 20335 can pull the tongue piece 1061 to be sequentially contacted with the front end of the inclined surface 20335 to the tail end of the inclined surface 20335, the upward force of the inclined surface 20335 pushes the tongue piece 1061 to jack up, the tongue piece 1061 is unlocked with the unlocking component 203, and the fixed connection between the optical module and the upper computer is realized.

The inclined surface 20335 may be a stepped inclined surface or a smooth inclined surface. In particular, the method comprises the following steps of,

when the inclined surface 20335 is a stepped inclined surface, the connection surface between any two adjacent stepped surfaces is a smooth inclined surface. Although the inclined surface 20335 has a step surface, the connecting surface between the step surfaces is a smooth inclined surface, and the friction between the tongue piece 1061 and the inclined surface 20335 is reduced. When the handle 2031 is pulled, the convenient tongue 1061 slides along the lowest step surface of the inclined surface 20335 toward the higher step surface

When the inclined surface 20335 is a smoothly inclined surface, the friction between the tongue 1061 and the inclined surface 20335 is further reduced. The tab 1061 may be more easily slid along the sloped surface 20335 from the front end of the sloped surface 20335 to the end of the sloped surface 20335 when the handle 2031 is pulled.

The application provides an optical module, including lower casing and last casing formation parcel cavity and the unblock part that is located parcel cavity outer wall. The unlocking component is used for realizing or releasing connection between the optical module and the upper computer. The outer wall of parcel cavity is provided with first recess. The unlocking member includes a handle and an unlocking device. The front end of the unlocking device is connected with the handle and comprises side arms and a cross arm connected with the two side arms. The side arm comprises an inclined structure, the tail end of the side arm is provided with a first bulge, and the first bulge is located on the outer wall of the wrapping cavity. The outer wall of parcel cavity is provided with first recess and second recess. The ramp structure slides along the first groove. The second groove is arranged in the first groove, is more sunken relative to the first groove, and is internally provided with a return spring. The return spring is in contact with an inner surface of the inclined structure. The first bulge is connected with the tail end of the inclined structure, and one surface adjacent to the tail end of the inclined structure is an inclined surface. The inclined plane, the front end is more sunken for the end, by the front end to the end contact of tongue piece with the host computer in proper order, realize tongue piece jack-up. When the handle is not pulled, the tongue piece of the upper computer is in contact with the front end of the inclined plane, no external force pushes the tongue piece to jack up, and the tongue piece is locked with the unlocking component, so that the optical module is fixedly connected with the upper computer. When the handle is pulled, external force is decomposed into force of the vertical inclined surface and force of the parallel inclined surface on the inclined surface, the force of the parallel inclined surface can pull the tongue piece to be sequentially contacted with the front end of the inclined surface and the tail end of the inclined surface, the force of the vertical inclined surface pushes the tongue piece to jack up, the tongue piece is unlocked with the unlocking component, and fixed connection between the optical module and the upper computer is achieved. In the application, the tail end of the side arm is provided with the first bulge, one surface of the first bulge is an inclined plane, the front end of the inclined plane is more concave relative to the tail end of the inclined plane, when the handle is not pulled, the tongue piece is in contact with the front end of the inclined plane, no external force pushes the tongue piece to jack up, and the optical module is fixedly connected with the upper computer; when the handle is pulled, the tongue piece sequentially contacts with the front end to the tail end of the inclined surface under the action of external force, the resolution force of the external force pushes the tongue piece to jack up, and the fixed connection between the optical module and the upper computer is released.

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

1. A light module, comprising:

the lower shell and the upper shell form a packaging cavity;

the unlocking part comprises a handle and an unlocking device;

the side arm comprises an inclined structure, the tail end of the side arm is provided with a first bulge which is positioned on the outer wall of the wrapping cavity,

the inclined structure slides along the first groove;

the return spring is in contact with the inner surface of the inclined structure;

2. The optical module according to claim 1, wherein the inclined surface is a smooth inclined surface.

3. The optical module according to claim 1, wherein the inclined surface is a stepped inclined surface.

4. The light module of claim 2 or 3, wherein the first protrusion further comprises a first side, a second side, a third side, and a fourth side;

the tail end of the first side face is connected with the front end of the inclined face and is connected with the inner side of the inclined structure;

the tail end of the second side surface is connected with the front end of the first side surface;

the tail end of the third side face is connected with the front end of the second side face and slides along the first groove;

and the tail end of the fourth side face is connected with the front end of the third side face, and the front end of the fourth side face is connected with the tail end of the inclined face.

5. The light module of claim 2 or 3, wherein the side arm further comprises a connector;

the front end of the connecting part is connected with the handle, and the tail end of the connecting part is connected with the front end of the inclined structure.

6. The light module of claim 4, further comprising a second protrusion;

the second protrusion is arranged in the first groove and positioned at the front end of the second groove and used for preventing the return spring from exceeding the second groove.

7. The light module of claim 6, wherein the first protrusion further comprises a baffle;

the baffle plate extends outwards along the second side face and is used for fixing a return spring.

8. The light module of claim 5, wherein the two side arms are symmetrically disposed along the cross arm.

9. The light module of claim 5, wherein the angled structure tip is more recessed relative to the angled structure front end.