An optical module

Abstract

The application provides an optical module, which comprises a lower shell and an unlocking mechanism. One end of the lower shell is provided with a base. The bottom surface of the base is provided with a containing cavity and a positioning protrusion. The side plate of the base is provided with a positioning column. The unlocking mechanism comprises a handle and an unlocker. The cantilever of the handle is provided with a positioning hole and an unlocking surface. The positioning hole is clamped on the positioning column. The handle can rotate around the positioning column. One side of the unlocker is inserted into the containing cavity. One end of the unlocker is in close contact with the unlocking surface. When the handle rotates, the unlocker slides on the base to unfasten the positioning protrusion. The containing cavity is provided with a return spring. The return spring is connected with the unlocker and the base. The return spring drives the unlocker to slide on the base to drive the handle to rotate and reset. The unlocking surface and the positioning hole of the handle are designed on the same cantilever. The stiffness of the handle material itself resists the reaction force from the unlocker. The handle is not easy to deform, which better guarantees the movement stroke of the unlocker and guarantees the unlocking function to be reliable.

Description

Technical Field

[0001] This application relates to the field of optical fiber communication technology, and in particular to an optical module. Background Technology

[0002] With the development of new business and application models such as cloud computing, mobile internet, and video, the advancement of optical communication technology has become increasingly important. In optical communication technology, optical modules are the tools for converting between photoelectric signals and signals, and are one of the key components in optical communication equipment. Furthermore, with the evolving needs of optical communication technology, the transmission rate of optical modules is continuously increasing.

[0003] Optical modules need to be frequently plugged in and out of switches during use. This requires the optical module structure to have a stable unlocking mechanism, allowing the optical module to be smoothly removed from the switch's enclosure. Therefore, the optical module needs to have its own unlocking mechanism. Push-to-unlock is a common unlocking method for optical modules. Optical modules using SC optical interfaces, as well as some optical modules using LC optical interfaces, must use the push-to-unlock method.

[0004] However, the handles in push-type unlocking mechanisms are commonly made of steel wire and sheet metal stainless steel. During the use of sheet metal handles, due to improper operation or deformation of the cage or circuit board that accompanies the optical module, unlocking problems are prone to occur. This manifests as deformation of the handle beam under stress, reduced unlocking stroke, and difficulty in unlocking. Summary of the Invention

[0005] This application provides an optical module to solve the problem that the unlocking mechanism of the optical module is prone to malfunction, making it difficult to unlock the optical module.

[0006] This application provides an optical module, including:

[0007] The lower housing has a base at one end, and the bottom surface of the base has a receiving cavity and a positioning protrusion. The side plate of the base has a positioning post.

[0008] An unlocking mechanism includes a handle and an unlocker. The handle includes a cantilever with a positioning hole and an unlocking surface. The handle is engaged with a positioning post through the positioning hole and can rotate around the positioning post. One side of the unlocker is inserted into the receiving cavity, and one end of the unlocker is in close contact with the unlocking surface. When the handle rotates, it causes the unlocker to slide on the base. When the unlocker slides, it disengages the lock on the positioning protrusion. A return spring is provided in the receiving cavity, connecting the unlocker and the base. The return spring causes the unlocker to slide on the base, and the sliding of the unlocker causes the handle to rotate and reset.

[0009] As can be seen from the above embodiments, the optical module provided in this application includes a lower housing and an unlocking mechanism. A base is provided at one end of the lower housing, and a receiving cavity is provided on the bottom surface of the base. A positioning post is provided on the side plate of the base. The unlocking mechanism includes a handle and an unlocker. One side of the unlocker is inserted into the receiving cavity to connect the unlocker to the lower housing, and the unlocker can slide on the base. The handle includes a cantilever, with a positioning hole and an unlocking surface. The handle is engaged with the positioning post through the positioning hole and can rotate around the positioning post. The unlocking surface is in close contact with one end of the unlocker, and when the handle rotates, it causes the unlocker to slide on the base. The positioning hole and the unlocking surface are located on the same cantilever, and the force of the unlocker acts directly on the cantilever of the handle, which can be controlled by the handle's own rigidity. The handle is resistant to the reaction force from the unlocker, preventing deformation. A positioning protrusion is located on the bottom surface of the base. When the unlocker slides, it disengages from the positioning protrusion. In other words, when the handle is turned, it causes the unlocker to slide on the base, disengaging from the positioning protrusion and unlocking the optical module. A return spring is located inside the receiving cavity, connecting the unlocker and the base. When the optical module is locked, the return spring is in its normal state. When the optical module is unlocked, the handle rotates, causing the unlocker to slide, thus changing the return spring from its normal state to a compressed state. After the unlocker slides to its final position, it slides on the base under the action of the return spring. This sliding motion causes the handle to rotate and reset, automatically resetting the unlocking mechanism. In this application, the unlocking surface and the positioning hole of the handle are designed on the same cantilever of the handle. The machining accuracy of the distance between the positioning hole and the unlocking surface is higher, which can better ensure the movement stroke of the unlocker and thus ensure the reliability of the unlocking function. The unlocking surface and the unlocker are subjected to shear force, and the handle material itself resists the reaction force from the unlocker. The handle is not easily deformed and has stronger unlocking adaptability. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0011] Figure 1 This is a connection diagram of an optical communication system according to some embodiments;

[0012] Figure 2 This is a structural diagram of an optical network terminal according to some embodiments;

[0013] Figure 3A schematic diagram of the structure of an optical module provided in this application embodiment. Figure 1 ;

[0014] Figure 4 A schematic diagram of the structure of an optical module provided in this application embodiment. Figure 2 ;

[0015] Figure 5 This is an exploded view of the structure of an optical module provided in an embodiment of this application;

[0016] Figure 6 A schematic diagram of a flip structure for the lower housing of an optical module provided in this application embodiment. Figure 1 ;

[0017] Figure 7 A schematic diagram of a flip structure for the lower housing of an optical module provided in this application embodiment. Figure 2 ;

[0018] Figure 8 A partial cross-sectional view of the lower housing of an optical module provided in an embodiment of this application;

[0019] Figure 9 A schematic diagram of a flip structure for the lower housing of an optical module provided in this application embodiment. Figure 3 ;

[0020] Figure 10 A schematic diagram of the structure of an unlocker in an optical module provided in this application embodiment. Figure 1 ;

[0021] Figure 11 A schematic diagram of the structure of an unlocker in an optical module provided in this application embodiment. Figure 2 ;

[0022] Figure 12 A schematic diagram of the structure of an unlocker in an optical module provided in this application embodiment. Figure 3 ;

[0023] Figure 13 This application provides a partial assembly diagram of the lower housing and unlocker in an optical module according to an embodiment of the present application.

[0024] Figure 14 A schematic diagram of the handle structure in an optical module provided in this application embodiment. Figure 1 ;

[0025] Figure 15 A schematic diagram of the handle structure in an optical module provided in this application embodiment. Figure 2 ;

[0026] Figure 16 This application provides a partial assembly diagram of the lower housing, handle, and unlocker in an optical module according to an embodiment of the present application.

[0027] Figure 17 A schematic diagram of the locking state of an optical module provided in an embodiment of this application;

[0028] Figure 18 A cross-sectional view of an optical module in a locked state provided in an embodiment of this application;

[0029] Figure 19 A schematic diagram illustrating the unlocked state of an optical module provided in an embodiment of this application;

[0030] Figure 20 This is a cross-sectional view of an optical module in its unlocked state, provided as an embodiment of this application. Detailed Implementation

[0031] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0032] In optical communication systems, optical signals carry the information to be transmitted and are transmitted through information transmission equipment such as optical fibers or waveguides to information processing equipment such as computers to complete the information transmission. Because light has passive transmission characteristics when transmitted through optical fibers or waveguides, low-cost, low-loss information transmission can be achieved. However, the signals transmitted by information transmission equipment such as optical fibers or waveguides are optical signals, while the signals that information processing equipment such as computers can recognize and process are electrical signals. Therefore, in order to establish an information connection between information transmission equipment such as optical fibers or waveguides and information processing equipment such as computers, it is necessary to achieve mutual conversion between electrical and optical signals.

[0033] In the field of optical communication technology, optical modules realize the mutual conversion function between optical signals and electrical signals. An optical module includes an optical port and an electrical port. The optical port enables optical communication with information transmission devices such as optical fibers or optical waveguides, while the electrical port enables electrical connection with optical network terminals (e.g., optical modems). The electrical connection is mainly used for power supply, I2C signal transmission, data transmission, and grounding. The optical network terminal transmits electrical signals to information processing devices such as computers via network cables or Wi-Fi.

[0034] Figure 1 This is a connection diagram of an optical communication system according to some embodiments. Figure 1 As shown, the optical communication system includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103.

[0035] One end of optical fiber 101 is connected to the remote server 1000, and the other end is connected to the optical network terminal 100 via optical module 200. Optical fiber itself can support long-distance signal transmission, such as signal transmission over several kilometers (6 to 8 kilometers). Theoretically, unlimited distance transmission can be achieved by using repeaters. Therefore, in typical optical communication systems, the distance between the remote server 1000 and the optical network terminal 100 can typically reach several kilometers, tens of kilometers, or hundreds of kilometers.

[0036] One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing device 2000 can be any one or more of the following devices: router, switch, computer, mobile phone, tablet computer, television, etc.

[0037] The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing device 2000 and the optical network terminal 100. The connection between the local information processing device 2000 and the remote server 1000 is completed by optical fiber 101 and network cable 103; while the connection between optical fiber 101 and network cable 103 is completed by optical module 200 and optical network terminal 100.

[0038] The optical module 200 includes an optical port and an electrical port. The optical port is configured to connect to the optical fiber 101, thereby establishing a bidirectional optical signal connection between the optical module 200 and the optical fiber 101. The electrical port is configured to connect to the optical network terminal 100, thereby establishing a bidirectional electrical signal connection between the optical module 200 and the optical network terminal 100. The optical module 200 performs mutual conversion between optical and electrical signals, thereby establishing an information connection between the optical fiber 101 and the optical network terminal 100. For example, the optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 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 200 and then input to the optical fiber 101. Since the optical module 200 is a tool for mutual conversion between optical and electrical signals and does not have the function of data processing, the information does not change during the above photoelectric conversion process.

[0039] The optical network terminal 100 includes a generally cuboid housing, and an optical module interface 102 and a network cable interface 104 disposed on the housing. The optical module interface 102 is configured to connect to an optical module 200, thereby establishing a bidirectional electrical signal connection between the optical network terminal 100 and the optical module 200; the network cable interface 104 is configured to connect to a network cable 103, thereby establishing a bidirectional electrical signal connection between the optical network terminal 100 and the network cable 103. The optical module 200 and the network cable 103 are connected through the optical network terminal 100. For example, the optical network terminal 100 transmits electrical signals from the optical module 200 to the network cable 103, and vice versa, thus the optical network terminal 100 acts as a host computer for the optical module 200, monitoring its operation. Besides the optical network terminal 100, the host computer for the optical module 200 may also include an optical line terminal (OLT), etc.

[0040] The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing equipment 2000 through optical fiber 101, optical module 200, optical network terminal 100 and network cable 103.

[0041] Figure 2 This is a structural diagram of an optical network terminal according to some embodiments, to clearly show the connection relationship between the optical module 200 and the optical network terminal 100. Figure 2 Only the structure of the optical network terminal 100 related to the optical module 200 is shown. For example... Figure 2 As shown, the optical network terminal 100 also includes a circuit board 105 disposed within a housing, a cage 106 disposed on the surface of the circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to connect to the electrical port of the optical module 200; the heat sink 107 has protrusions such as fins to increase the heat dissipation area.

[0042] The optical module 200 is inserted into the cage 106 of the optical network terminal 100, where it is secured. Heat generated by the optical module 200 is conducted to the cage 106 and then dissipated through the heat sink 107. After insertion into the cage 106, the optical module 200's electrical port connects to an electrical connector inside the cage 106, establishing a bidirectional electrical signal connection between the optical module 200 and the optical network terminal 100. Furthermore, the optical port of the optical module 200 connects to the optical fiber 101, establishing a bidirectional optical signal connection between the optical module 200 and the optical fiber 101.

[0043] Figure 3 A schematic diagram of the structure of an optical module provided in this application embodiment. Figure 1 , Figure 4A schematic diagram of the structure of an optical module provided in this application embodiment. Figure 2 , Figure 5 This is an exploded view of the structure of an optical module provided in an embodiment of this application. Figure 3 , Figure 4 , Figure 5 As shown, the optical module 200 includes a shell, a circuit board and optical components disposed within the shell.

[0044] The housing includes an upper housing and a lower housing 202, with the upper housing covering the lower housing 202 to form the aforementioned housing with two openings; the outer contour of the housing is generally square.

[0045] In some embodiments of this disclosure, the lower housing 202 includes a base plate and two lower side plates located on both sides of the base plate and disposed perpendicular to the base plate; the upper housing includes a cover plate, which covers the two lower side plates of the lower housing 202 to form the aforementioned housing.

[0046] In some embodiments, the lower housing 202 includes a bottom plate and two lower side plates located on both sides of the bottom plate and arranged perpendicularly to the bottom plate; the upper housing includes a cover plate and two upper side plates located on both sides of the cover plate and arranged perpendicularly to the cover plate, wherein the two upper side plates and the two lower side plates are combined to realize that the upper housing covers the lower housing 202.

[0047] The direction of the line connecting the two openings 204 and 205 can be consistent with or inconsistent with the length direction of the optical module 200. For example, opening 204 is located at the end of the optical module 200. Figure 3 The opening 205 is also located at the end of the optical module 200 (right end). Figure 3 (Left end). Alternatively, opening 204 is located at the end of optical module 200, while opening 205 is located on the side of optical module 200. Opening 204 is an electrical port from which the gold fingers of the circuit board extend and are inserted into a host computer (e.g., optical network terminal 100); opening 205 is an optical port configured to connect to an external optical fiber 101 so that the external optical fiber 101 can connect to the optical components inside optical module 200.

[0048] The assembly method using an upper and lower housing 202 facilitates the installation of circuit boards, optical components, and other devices into the housing, which provides encapsulation and protection for these devices. Furthermore, the assembly of circuit boards and optical components facilitates the deployment of positioning, heat dissipation, and electromagnetic shielding components, promoting automated production.

[0049] In some embodiments, the upper housing and lower housing 202 are generally made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0050] In some embodiments, the optical module 200 further includes an unlocking mechanism 203 located outside its housing. The unlocking mechanism 203 is configured to establish a fixed connection between the optical module 200 and the host computer, or to release the fixed connection between the optical module 200 and the host computer.

[0051] For example, the unlocking mechanism 203 is located on the outer wall of the lower housing 202 and has a locking component that matches the host computer cage (e.g., the cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the host computer cage, the locking component of the unlocking mechanism 203 fixes the optical module 200 in the host computer cage; when the unlocking mechanism 203 is pulled, the locking component of the unlocking mechanism 203 moves accordingly, thereby changing the connection relationship between the locking component and the host computer, so as to release the locking relationship between the optical module 200 and the host computer, thereby allowing the optical module 200 to be pulled out of the host computer cage.

[0052] A circuit board includes circuit traces, electronic components, and chips. The circuit traces connect the electronic components and chips according to the circuit design to achieve functions such as power supply, electrical signal transmission, and grounding. Electronic components include, for example, capacitors, resistors, transistors, and metal-oxide-semiconductor field-effect transistors (MOSFETs). Chips include, for example, microcontroller units (MCUs), laser driver chips, limiting amplifiers, clock and data recovery (CDR) chips, power management chips, and digital signal processing (DSP) chips.

[0053] Circuit boards are generally rigid circuit boards. Due to their relatively rigid material, rigid circuit boards can also perform load-bearing functions. For example, rigid circuit boards can stably support the aforementioned electronic components and chips. When optical components are located on the circuit board, rigid circuit boards can also provide stable support. Rigid circuit boards can also be inserted into electrical connectors in the host computer cage.

[0054] The circuit board also includes gold fingers formed on its end surfaces, each gold finger consisting of multiple independent pins. The circuit board is inserted into a cage 106 and is electrically connected to an electrical connector within the cage 106 via the gold fingers. The gold fingers can be located on only one side of the circuit board surface, or on the top and bottom surfaces of the circuit board, to accommodate applications requiring a large number of pins. The gold fingers are configured to establish an electrical connection with a host computer to enable power supply, grounding, I2C signal transmission, data signal transmission, etc.

[0055] Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards as a supplement to rigid circuit boards. For example, flexible circuit boards can be used to connect rigid circuit boards to optical components.

[0056] In some embodiments, the unlocking mechanism 203 generally includes a handle 2031 and an unlocker 2032. The handle 2031 on the optical module is commonly made of two materials: steel wire and sheet metal stainless steel. The dimensional accuracy of the steel wire handle is worse than that of the sheet metal handle. In order to ensure the strength of the handle, steel wire with a diameter of more than 0.7mm must be selected, which can easily cause the top or bottom dimensions to exceed the protocol standard, resulting in poor versatility. The sheet metal handle has higher processing accuracy, can be designed with complex shapes, and has better versatility.

[0057] Sheet metal handles generally include structures such as a crossbeam, unlocking surface, positioning hole, and anti-detachment hook. The positioning hole is used to position the handle and fix it on the base of the lower housing 202. The unlocking surface contacts the unlocker 2032 and pushes the unlocker 2032 to unlock. The crossbeam is used to connect the unlocking surface and the main structure of the handle. The anti-detachment hook connects the crossbeam and the unlocking structure to prevent the handle from falling off the base abnormally.

[0058] However, during the use of sheet metal handles, due to improper operation or deformation of the cage or circuit board that is compatible with the optical module, unlocking problems are prone to occur. This manifests as deformation of the handle crossbeam under stress, reducing the unlocking formation and causing difficulty in unlocking.

[0059] The root cause of the deformation is the narrow width and insufficient strength of the crossbeam. When the unlocker is obstructed by external force, a force is generated to the left on the unlocking surface of the handle. Since the unlocking surface is far from the handle's positioning hole, the middle section of the crossbeam deforms under stress. Because the dimensions of the optical module need to conform to the MSA standard (for optical modules, the MSA standard defines not only the external dimensions but also their electrical and optical interfaces; therefore, optical module suppliers must strictly adhere to the MSA standard during system design to ensure operability and interchangeability between optical modules), widening the crossbeam alone cannot solve the deformation problem.

[0060] To address the aforementioned issues, this application provides an optical module in which the unlocking surface of the handle and the positioning hole are positioned on the same vertical wall. The crossbeam structure serves only to connect the vertical wall and the anti-detachment hook, without transmitting the force between the handle and the unlocker. This ensures better movement of the unlocker and thus guarantees reliable unlocking functionality.

[0061] Figure 6 A schematic diagram of a flip structure for the lower housing of an optical module provided in this application embodiment. Figure 1 , Figure 7 A schematic diagram of a flip structure for the lower housing of an optical module provided in this application embodiment. Figure 2 .like Figure 6, Figure 7 As shown, the optical module provided in this embodiment includes a lower housing 202 and an unlocking mechanism 203. The unlocking mechanism 203 includes a handle 2031 and an unlocker 2032. The handle 2031 is rotatably connected to one end of the lower housing 202, and the unlocker 2032 is connected to the outer wall of the lower housing 202. The unlocking surface of the handle 2031 is in contact with the unlocker 2032. When the handle 2031 rotates, the unlocking surface drives the unlocker 2032 to move to the right on the lower housing 202 to unlock the optical module 200.

[0062] In order to connect the unlocking mechanism 203, one end of the lower housing 202 includes a base, which includes a base plate 301, a first side plate 302 and a second side plate 303. The first side plate 302 and the second side plate 303 are arranged opposite to each other. The two ends of the base plate 301 are respectively connected to the first side plate 302 and the second side plate 303. Thus, the base is a U-shaped seat formed by the base plate 301, the first side plate 302 and the second side plate 303.

[0063] A first positioning post 304 is provided on the first side plate 302, extending from the first side plate 302 to the outer side of the lower housing 202; a second positioning post 305 is provided on the second side plate 303, extending from the second side plate 303 to the outer side of the lower housing 202. The first positioning post 304 and the second positioning post 305 are arranged opposite to each other. The handle 2031 is connected to the lower housing 202 through the first positioning post 304 and the second positioning post 305, and the handle 2031 can rotate around the first positioning post 304 and the second positioning post 305.

[0064] In some embodiments, a first protrusion 316 is provided on the first side plate 302. The first protrusion 316 extends from the first side plate 302 to the outside of the lower housing 202, and the length of the first protrusion 316 in the left-right direction is smaller than the length of the first side plate 302 in the left-right direction, so that the left side of the first protrusion 316 is recessed into the left side of the first side plate 302.

[0065] A second protrusion is provided on the second side plate 303. The second protrusion extends from the second side plate 303 to the outside of the lower housing 202, and the length of the second protrusion in the left-right direction is smaller than the length of the second side plate 303 in the left-right direction. Thus, the left side of the second protrusion is recessed into the left side of the second side plate 303.

[0066] A third limiting surface 317 is provided on the left side of the first boss 316, and a fourth limiting surface is provided on the left side of the second boss. When the handle 2031 is installed on the lower housing 202 through the first positioning post 304 and the second positioning post 305, and the handle 2031 rotates around the first positioning post 304 and the second positioning post 305, the third limiting surface 317 and the fourth limiting surface play a limiting role on the handle 2031, so as to prevent the handle 2031 from falling off the lower housing 202 when the rotation angle is too large.

[0067] The base plate 301 is provided with a first guide post 306 and a second guide post 309. The first guide post 306 is connected to the first side plate 302, and the second guide post 309 is connected to the second side plate 303, so that one side of the first guide post 306 is flush with the first side plate 302, and one side of the second guide post 309 is flush with the second side plate 303.

[0068] The base plate 301 is also provided with a first mounting groove 307 and a second mounting groove 310. The first mounting groove 307 and the second mounting groove 310 are located between the first guide post 306 and the second guide post 309. The first mounting groove 307 and the second mounting groove 310 are both recessed into the base plate 301, and there is a gap between the first mounting groove 307 and the second mounting groove 310, so that the base plate 301 located between the first mounting groove 307 and the second mounting groove 310 protrudes. The first guide post 306 is connected to the first mounting groove 307, and the first guide post 306 is a side wall of the first mounting groove 307. The second guide post 309 is connected to the second mounting groove 310, and the second guide post 309 is a side wall of the second mounting groove 310.

[0069] The first mounting groove 307 has an opening on the left side and a first limiting surface 308 on the right side. The first mounting groove 307 is a U-shaped groove formed by the first guide post 306, the first limiting surface 308 and a side wall opposite to the first guide post 306.

[0070] The second mounting groove 310 has an opening on the left side and a second limiting surface 311 on the right side. The second mounting groove 310 is a U-shaped groove formed by the second guide post 309, the second limiting surface 311 and a side wall opposite to the second guide post 309.

[0071] In some embodiments, the lower housing 202 further includes a first limiting plate 312 and a second limiting plate 313, which are located below the bottom plate 301. The first limiting plate 312 and the second limiting plate 313 are arranged in the left-right direction and there is a gap between them. One side of the first limiting plate 312 is fixedly connected to the first boss 316, and there is a vertical gap between the first limiting plate 312 and the bottom plate 301. Thus, the first limiting plate 312, the bottom plate 301, and the first boss 316 form a first receiving cavity 314. The left side of the first receiving cavity 314 has a first opening, so that the first receiving cavity 314 communicates with the first mounting groove 307.

[0072] One side of the second limiting plate 313 is fixedly connected to the second boss, and there is a gap in the vertical direction between the second limiting plate 313 and the bottom plate 301. Thus, the second limiting plate 313, the bottom plate 301 and the second boss form a second receiving cavity 315. The left side of the second receiving cavity 315 is provided with a second opening, so that the second receiving cavity 315 is connected to the second mounting groove 310.

[0073] In some embodiments, the first receiving cavity 314 is provided with a third opening in the direction of the second limiting plate 313, and the second receiving cavity 315 is provided with a fourth opening in the direction of the first limiting plate 312. The unlocker 2032 can be inserted into the first receiving cavity 314 and the second receiving cavity 315 through the first opening, the second opening, the third opening and the fourth opening to limit the unlocker 2032 in the vertical direction and prevent the unlocker 2032 from falling off the lower housing 202.

[0074] The base plate 301 is also provided with a positioning protrusion 2021. The positioning protrusion 2021 is a wedge-shaped protrusion on the base plate 301 and is a non-moving part. The positioning protrusion 2021 is arranged opposite to the spring lock hole on the shielding cage of the host computer. When the spring lock hole is fastened on the positioning protrusion 2021, the optical module 200 and the shielding cage are locked together and are not easy to disengage.

[0075] The first limiting plate 312 and the second limiting plate 313 are located between the positioning protrusion 2021 and the left side of the lower housing 202. The gaps in the front-to-back direction between the positioning protrusion 2021 and the first limiting plate 312 and between the positioning protrusion 2021 and the second limiting plate 313 are the same. The positioning protrusion 2021 is located on the central axis of the gap between the first limiting plate 312 and the second limiting plate 313.

[0076] In some embodiments, the unlocker 2032 is disposed on the outside of the lower housing 202. The unlocker 2032 can move left and right on the base plate 301. When the unlocker 2032 moves to the right, the unlocker 2032 can push open the spring piece on the shielding cage, so that the shielding cage is separated from the positioning protrusion 2021, thereby realizing the unlocking of the optical module 200 and the shielding cage.

[0077] Figure 8 This is a partial cross-sectional view of the lower housing of an optical module provided in an embodiment of this application. Figure 9 A schematic diagram of a flip structure for the lower housing of an optical module provided in this application embodiment. Figure 3 .like Figure 8 , Figure 9 As shown, a fourth limiting plate 318 is provided inside the second receiving cavity 315. The fourth limiting plate 318 is parallel to the second limiting surface 311, and there is a preset distance between the fourth limiting plate 318 and the second limiting surface 311. A second U-shaped groove 319 is provided on the bottom plate 301 inside the second receiving cavity 315. The second U-shaped groove 319 extends from the second limiting surface 311 to the fourth limiting plate 318.

[0078] The unlocking mechanism 203 also includes a reset spring 2033, which is disposed in the second receiving cavity 315, that is, the reset spring 2033 is placed in the second U-shaped groove 319, and one end of the reset spring 2033 abuts against the fourth limiting plate 318; when the unlocker 2032 is inserted into the second receiving cavity 315, the other end of the reset spring 2033 abuts against the unlocker 2032.

[0079] Similarly, a third limiting plate is provided in the first receiving cavity 314. The third limiting plate is parallel to the first limiting surface 308, and there is a preset distance between the third limiting plate and the first limiting surface 308. A first U-shaped groove is provided on the bottom plate 301 in the first receiving cavity 314. The first U-shaped groove extends from the first limiting surface 308 to the third limiting plate.

[0080] The reset spring is located in the first receiving cavity 314, that is, the reset spring 2033 is placed in the first U-shaped groove, and one end of the reset spring 2033 abuts against the third limiting plate. When the unlocker 2032 is inserted into the first receiving cavity 314, the other end of the reset spring 2033 abuts against the unlocker 2032.

[0081] When the unlocker 2032 is moved to the right under force, the reset spring 2033 is in a compressed state until the unlocker 2032 pushes open the spring lock hole locked with the positioning protrusion 2021. Then, the unlocker 2032 moves to the left under the action of the reset spring 2033 until the unlocker 2032 is reset, thus completing the unlocking of the optical module 200.

[0082] In some embodiments, the reset spring 2033 is placed in the first receiving cavity 314 and the second receiving cavity 315 through the first U-shaped groove and the second U-shaped groove 319. The first receiving cavity 314 and the second receiving cavity 315 limit the reset spring 2033 and prevent the reset spring 2033 from detaching from the lower housing 202.

[0083] Figure 10 A schematic diagram of the structure of an unlocker in an optical module provided in this application embodiment. Figure 1 .like Figure 10 As shown, the unlocker 2032 includes a first motherboard 401 and a second motherboard 402. One end of the first motherboard 401 is fixedly connected to one end of the second motherboard 402. The width of the first motherboard 401 in the front-to-back direction is greater than the width of the second motherboard 402 in the front-to-back direction. The top surface of the first motherboard 401 is flush with the top surface of the second motherboard 402. The bottom surface of the first motherboard 401 is on the same plane as the bottom surface of the second motherboard 402, so that the first motherboard 401 and the second motherboard 402 form a T-shaped structure.

[0084] The central axis of the first motherboard 401 along the left-right direction coincides with the central axis of the second motherboard along the left-right direction. That is, the distance between the front side of the first motherboard 401 and the front side of the second motherboard 402, and the distance between the rear side of the first motherboard 401 and the rear side of the second motherboard 402 are the same.

[0085] When the second motherboard 402 is connected to the first motherboard 401, the angle between the side of the second motherboard 402 and the side of the first motherboard 401 can be a right angle, and the side of the second motherboard 402 and the side of the first motherboard 401 can also be connected by a slope.

[0086] The unlocker 2032 also includes a first insertion plate 403 and a second insertion plate 404. The first insertion plate 403 and the second insertion plate 404 are symmetrically arranged on both sides of the second main board 402. The front side of the first insertion plate 403 is fixedly connected to the rear side of the second main board 402, the left side of the first insertion plate 403 is fixedly connected to the right side of the first main board 401, and the top surface of the first insertion plate 403 is recessed into the top surface of the second main board 402. The bottom surface of the first insertion plate 403 and the bottom surface of the second main board 402 are on the same plane. The first insertion plate 403 can be inserted into the first receiving cavity 314 of the lower housing 202, and the second insertion plate 404 can be inserted into the second receiving cavity 315 of the lower housing 202 to realize the connection between the unlocker 2032 and the lower housing 202.

[0087] In some embodiments, a groove is provided on the rear side of the first insertion plate 403. The groove extends from the right side of the first insertion plate 403 toward the first main board 401, such that the right side of the first insertion plate 403 includes a first contact surface 405 and a second contact surface 407. The distance between the first contact surface 405 and the first main board 401 in the left-right direction is less than the distance between the second contact surface 407 and the first main board 401 in the left-right direction. That is, the second contact surface 407 is located to the right of the first contact surface 405, and the right side of the second main board 402 is located to the right of the second contact surface 407, so that the first insertion plate 403 is an L-shaped plate.

[0088] Since the first insertion plate 403 has a groove on its rear side, the rear side of the first insertion plate 403 includes a first rear side and a second rear side. The rear side of the first main board 401 protrudes beyond the first rear side, and the first rear side protrudes beyond the second rear side.

[0089] Similarly, the rear side of the second insertion plate 404 is fixedly connected to the front side of the second motherboard 402, the left side of the second insertion plate 404 is fixedly connected to the right side of the first motherboard 401, and the top surface of the second insertion plate 404 is recessed into the top surface of the second motherboard 402, and the bottom surface of the second insertion plate 404 and the bottom surface of the second motherboard 402 are on the same plane.

[0090] A groove is provided on the front side of the second insertion plate 404. The groove extends from the right side of the second insertion plate 404 toward the first main board 401, such that the right side of the second insertion plate 404 includes a third contact surface 406 and a fourth contact surface 408. The distance between the third contact surface 406 and the first main board 401 in the left-right direction is less than the distance between the fourth contact surface 408 and the first main board 401 in the left-right direction. That is, the fourth contact surface 408 is located to the right of the third contact surface 406, and the right side of the second main board 402 is located to the right of the fourth contact surface 408, so that the second insertion plate 404 is an L-shaped plate.

[0091] Since the front side of the second insertion plate 404 is provided with a groove, the front side of the second insertion plate 404 includes a first front side and a second front side. The front side of the first main board 401 protrudes from the first front side, and the first front side protrudes from the second front side.

[0092] In some embodiments, since the top surfaces of the first insertion plate 403 and the second insertion plate 404 are recessed into the top surface of the second main board 402, the second main board 402 protrudes from the first insertion plate 403 and the second insertion plate 404.

[0093] In some embodiments, a connecting plate 409 is connected to the right side of the second motherboard 402. The bottom surface of the connecting plate 409 is on the same plane as the bottom surface of the second motherboard 402. The top surface of the connecting plate 409 is inclined, that is, the distance between the top surface and the bottom surface of the connecting plate 409 gradually decreases from left to right.

[0094] The connecting plate 409 is provided with a groove that runs through the top and bottom surfaces of the connecting plate 409 and extends from the right side of the connecting plate 409 toward the second main board 402. The length of the groove in the left-right direction can be less than the length of the connecting plate 409 in the left-right direction.

[0095] A first connecting wall 410 and a second connecting wall 411 are connected to the right side of the connecting plate 409. There is a gap between the first connecting wall 410 and the second connecting wall 411, which is the same as the width of the groove on the connecting plate 409. The left side of the first connecting wall 410 is fixedly connected to the right side of the connecting plate 409. A first wedge block 412 is connected to the right side of the first connecting wall 410. The rear side of the first wedge block 412 is flush with the rear side of the first connecting wall 410. The width of the first wedge block 412 in the front-back direction is smaller than the width of the first connecting wall 410 in the front-back direction.

[0096] The left side of the second connecting wall 411 is fixedly connected to the right side of the connecting plate 409. A second wedge block 413 is connected to the right side of the second connecting wall 411. The front side of the second wedge block 413 is flush with the front side of the second connecting wall 411. The width of the second wedge block 413 in the front-back direction is smaller than the width of the second connecting wall 411 in the front-back direction. That is, the distance between the first wedge block 412 and the second wedge block 413 is greater than the distance between the first connecting wall 410 and the second connecting wall 411.

[0097] In some embodiments, the height dimensions of the first wedge block 412 and the second wedge block 413 gradually decrease in the vertical direction along the left-to-right direction, and there is a gap between the first wedge block 412 and the second wedge block 413, which is disposed opposite to the positioning protrusion 2021.

[0098] The distance between the first wedge block 412 and the second wedge block 413 is greater than the locking surface of the positioning protrusion 2021, that is, greater than the maximum width of the positioning protrusion 2021. This allows the first wedge block 412 and the second wedge block 413 to extend to the right beyond the positioning protrusion 2021 when the unlocker 2032 moves to the right to the positioning protrusion 2021. The inclined surfaces on the upper side of the first wedge block 412 and the second wedge block 413 push open the spring lock hole on the shielding cage from the positioning protrusion 2021, causing the shielding cage to disengage from the positioning protrusion 2021. Thus, the unlocking is completed when the unlocker 2032 slides to the right.

[0099] Figure 11 A schematic diagram of the structure of an unlocker in an optical module provided in this application embodiment. Figure 2 , Figure 12 A schematic diagram of the structure of an unlocker in an optical module provided in this application embodiment. Figure 3 .like Figure 11 , Figure 12 As shown, a first support plate 420 and a second support plate 421 are provided on both sides of the first motherboard 401. The first support plate 420 and the second support plate 421 are symmetrically arranged with respect to the central axis in the left-right direction of the first motherboard 401. The top surface of the first support plate 420 and the second support plate 421 is connected to the top surface of the first motherboard 401. There is a gap between the bottom surface of the first support plate 420 and the second support plate 421 and the bottom surface of the first motherboard 401, so that the distance between the top surface of the first motherboard 401 and the bottom surface of the first motherboard 401 is less than the distance between the top surface of the first motherboard 401 and the bottom surface of the first support plate 420 and the second support plate 421.

[0100] A force-bearing surface 400 is provided on the left side of the first main board 401. A first protruding plate 414 and a second protruding plate 415 are provided on the bottom surface of the first main board 401. The first protruding plate 414 and the second protruding plate 415 are symmetrically arranged with respect to the central axis in the left and right direction of the first main board 401. The first protruding plate 414 and the second protruding plate 415 are located between the first support plate 420 and the second support plate 421. The bottom surface of the first protruding plate 414 and the second protruding plate 415 is flush with the bottom surface of the first support plate 420 and the second support plate 421. The first protruding plate 414 and the second protruding plate 415 extend from the bottom surface of the first main board 401 in a direction away from the second main board 402. The left side of the first protruding plate 414 and the second protruding plate 415 protrudes from the force-bearing surface 400.

[0101] Since there are gaps between the bottom surfaces of the first support plate 420, the second support plate 421, the first protruding plate 414, the second protruding plate 415 and the first main plate 401, a first guide groove 417 is formed between the first support plate 420 and the first protruding plate 414. The first guide groove 417 penetrates the force-bearing surface 400 and the right side surface of the first main plate 401 and is positioned opposite to the first guide post 306 on the lower housing 202. When the unlocker 2032 is installed on the lower housing 202, the first guide groove 417 is fitted onto the first guide post 306.

[0102] A second guide groove 418 is formed between the second support plate 421 and the second protruding plate 415. The second guide groove 418 passes through the force-bearing surface 400 and the right side surface of the first main plate 401, and is positioned opposite to the second guide post 309 on the lower housing 202. When the unlocker 2032 is installed on the lower housing 202, the second guide groove 418 is fitted onto the second guide post 309.

[0103] A third guide groove 416 is formed between the first protruding plate 414 and the second protruding plate 415. The third guide groove 416 is disposed opposite to the base plate 301 between the first mounting groove 307 and the second mounting groove 310. When the unlocker 2032 is installed on the lower housing 202, the third guide groove 416 is sleeved on the base plate 301 between the first mounting groove 307 and the second mounting groove 310.

[0104] In some embodiments, when the unlocker 2032 is installed on the lower housing 202, the first guide groove 417 is sleeved on the first guide post 306, the second guide groove 418 is sleeved on the second guide post 309, and the third guide groove 416 is sleeved on the base plate 301 between the first mounting groove 307 and the second mounting groove 310. Then, the first protruding plate 414 is located in the first mounting groove 307, and the second protruding plate 415 is located in the second mounting groove 310. The unlocker 2032 can move left and right along the first guide post 306 and the second guide post 309 to realize the movement of the unlocker 2032 on the lower housing 202.

[0105] In some embodiments, to ensure that the unlocker 2032 moves in the left-right direction on the lower housing 202, a guide groove 419 can be provided on the bottom surface of the second main board 402. The central axis of the guide groove 419 in the left-right direction coincides with the central axis of the second main board 402 in the left-right direction, and the guide groove 419 communicates with the groove on the connecting plate 409. A guide post is provided on the bottom plate 301 between the first limiting plate 312 and the second limiting plate 313, and the guide groove 419 is disposed opposite to the guide post. When the unlocker 2032 is installed on the lower housing 202, the guide groove 419 is sleeved on the guide post, and the unlocker 2032 can move left and right along the guide post to avoid the unlocker 2032 deviating during movement.

[0106] Figure 13 This is a partial assembly diagram of the lower housing and unlocker in an optical module provided as an embodiment of this application. Figure 13As shown, when the unlocker 2032 is installed onto the lower housing 202, align the gap between the second main board 402 of the unlocker 2032 and the first limiting plate 312 and the second limiting plate 313, align the first insertion plate 403 with the first opening on the left side of the first receiving cavity 314, and align the second insertion plate 404 with the second opening on the left side of the second receiving cavity 315. Then move the unlocker 2032 from left to right so that the second main board 402 is inserted into the gap between the first limiting plate 312 and the second limiting plate 313. Insertion plate 403 is inserted into first receiving cavity 314, and second insertion plate 404 is inserted into second receiving cavity 315; then the unlocker 2032 continues to move to the right, so that first guide groove 417 is fitted on first guide post 306, second guide groove 418 is fitted on second guide post 309, third guide groove 416 is fitted on base plate 301 between first mounting groove 307 and second mounting groove 310, first protruding plate 414 is placed in first mounting groove 307, and second protruding plate 415 is placed in second mounting groove 310.

[0107] In some embodiments, after the first insertion plate 403 is inserted into the first receiving cavity 314, one end of the reset spring 2033 in the first receiving cavity 314 abuts against the third limiting plate, and the other end of the reset spring 2033 abuts against the first contact surface 405 of the first insertion plate 403, so as to realize the transmission of force between the reset spring 2033 and the unlocker 2032.

[0108] After the second insertion plate 404 is inserted into the second receiving cavity 315, one end of the reset spring 2033 in the second receiving cavity 315 abuts against the fourth limiting plate 318, and the other end of the reset spring 2033 abuts against the third contact surface 406 of the second insertion plate 404, so as to realize the transmission of force between the reset spring 2033 and the unlocker 2032.

[0109] Figure 14 A schematic diagram of the handle structure in an optical module provided in this application embodiment. Figure 1 , Figure 15 A schematic diagram of the handle structure in an optical module provided in this application embodiment. Figure 2 .like Figure 14 , Figure 15 As shown, the handle 2031 includes a first cantilever 502, a second cantilever 503, and a crossbeam 501. The first cantilever 502 and the second cantilever 503 are arranged opposite to each other. The two ends of the crossbeam 501 are fixedly connected to the first cantilever 502 and the second cantilever 503 respectively. Thus, the handle 2031 is connected by the crossbeam 501, the first cantilever 502, and the second cantilever 503 to form a U-shaped structure.

[0110] The first cantilever 502 is provided with a first positioning hole 504, which is positioned opposite to the first positioning post 304 on the lower housing 202. When the handle 2031 is installed on the lower housing 202, the first positioning post 304 is inserted into the first positioning hole 504.

[0111] The other end of the first cantilever 502 is provided with a first connecting beam 507 and a first anti-detachment hook 508. One end of the first connecting beam 507 is fixedly connected to the first cantilever 502, and the other end of the first connecting beam 507 is fixedly connected to the first anti-detachment hook 508. The first anti-detachment hook 508 and the first cantilever 502 are parallel to each other. The first cantilever 502, the first connecting beam 507 and the first anti-detachment hook 508 are connected to form a first U-shaped anti-detachment structure.

[0112] When the handle 2031 is installed on the lower housing 202, the first guide post 306 and the first protruding plate 414 are both located within the first U-shaped anti-detachment structure, and the distance between the first cantilever 502 and the first anti-detachment hook 508 (the width dimension of the first connecting beam 507) is greater than the sum of the width dimension of the first guide post 306 and the width dimension of the first protruding plate 414, that is, there is a gap between the first protruding plate 414 and the first anti-detachment hook 508.

[0113] The other end face of the first cantilever 502 is an arc surface, which is the first unlocking surface 506. The distance between the first unlocking surface 506 and the crossbeam 501 is greater than the distance between the first connecting beam 507 and the crossbeam 501. The first unlocking surface 506 is in close contact with the force-bearing surface 400 of the unlocker 2032. The force applied by the handle 2031 is applied to the unlocker 2032 through the first unlocking surface 506 to drive the unlocker 2032 to move on the lower housing 202.

[0114] Similarly, the second cantilever 503 is provided with a second positioning hole 505, which is opposite to the second positioning post 305 on the lower housing 202. When the handle 2031 is installed on the lower housing 202, the second positioning post 305 is inserted into the second positioning hole 505.

[0115] The other end of the second cantilever 503 is provided with a second connecting beam 510 and a second anti-detachment hook 511. One end of the second connecting beam 510 is fixedly connected to the second cantilever 503, and the other end of the second connecting beam 510 is fixedly connected to the second anti-detachment hook 511. The second anti-detachment hook 511 and the second cantilever 503 are parallel to each other. The second cantilever 503, the second connecting beam 510 and the second anti-detachment hook 511 are connected to form a second U-shaped anti-detachment structure.

[0116] When the handle 2031 is installed on the lower housing 202, the second guide post 309 and the second protruding plate 415 are both located within the second U-shaped anti-detachment structure, and the distance between the second cantilever 503 and the second anti-detachment hook 511 (the width dimension of the second connecting beam 510) is greater than the sum of the width dimension of the second guide post 309 and the width dimension of the second protruding plate 415, that is, there is a gap between the second protruding plate 415 and the second anti-detachment hook 511.

[0117] The other end face of the second cantilever 503 is an arc surface, which is the second unlocking surface 509. The distance between the second unlocking surface 509 and the crossbeam 501 is greater than the distance between the second connecting beam 510 and the crossbeam 501. The second unlocking surface 509 is in close contact with the force-bearing surface 400 of the unlocker 2032. The force applied by the handle 2031 is applied to the unlocker 2032 through the second unlocking surface 509 to drive the unlocker 2032 to move on the lower housing 202.

[0118] In some embodiments, since there is a gap between the first protruding plate 414 and the first anti-detachment hook 508, and a gap between the second protruding plate 415 and the second anti-detachment hook 511, when the user applies a biased force to the handle 2031, such as when the user holds the left or right side of the handle 2031, the handle 2031 will shift to one side of the lower housing 202. At this time, the first anti-detachment hook 508 may abut against the first protruding plate 414, or the second anti-detachment hook 511 may abut against the second protruding plate 415, thus preventing the handle 2031 from falling off the first positioning post 304 and the second positioning post 305 on the lower housing 202.

[0119] Figure 16 This is a partial assembly diagram of the lower housing, handle, and unlocker in an optical module provided as an embodiment of this application. Figure 16 As shown, after the unlocker 2032 is installed on the lower housing 202, the handle 2031 is inserted into the first positioning post 304 and the second positioning post 305 of the lower housing 202 through the first positioning hole 504 and the second positioning hole 505. The first guide post 306 and the first protruding plate 414 are placed in the first U-shaped anti-detachment structure, and the second guide post 309 and the second protruding plate 415 are placed in the second U-shaped anti-detachment structure. The first unlocking surface 506 and the second unlocking surface 509 of the handle 2031 are in close contact with the force-bearing surface 400 of the unlocker 2032 to install the handle 2031 on the lower housing 202. The handle 2031 can rotate around the first positioning post 304 and the second positioning post 305. When the handle 2031 rotates, it drives the unlocker 2032 to move through the first unlocking surface 506 and the second unlocking surface 509.

[0120] Figure 17 This is a schematic diagram of the locking state of an optical module provided in an embodiment of this application. Figure 18This is a cross-sectional view of an optical module in a locked state, provided as an embodiment of this application. Figure 17 , Figure 18 As shown, after the unlocker 2032 and handle 2031 are respectively assembled onto the lower housing 202, when the handle 2031 is in a vertical position, the optical module 200 is in a locked state, the reset spring 2033 is in a normal state, and the force-bearing surface 400 of the unlocker 2032 presses against the first unlocking surface 506 and the second unlocking surface 509 of the handle 2031, which can ensure that the unlocker 2032 and the handle 2031 do not loosen. There is a preset distance between the right side of the first main board 401 in the unlocker 2032 and the left side of the first receiving cavity 314 and the second receiving cavity 315. The distance between the first wedge block 412 and the second wedge block 413 extended from the unlocker 2032 and the positioning protrusion 2021 meets the protocol requirements.

[0121] Figure 19 This is a schematic diagram illustrating the unlocked state of an optical module provided in an embodiment of this application. Figure 20 This is a cross-sectional view of an optical module in its unlocked state, provided as an embodiment of this application. Figure 19 , Figure 20 As shown, when the user wants to unlock the optical module 200, they grasp the crossbeam 501 of the handle 2031 from bottom to top. Figure 19 (In the direction of rotation shown) Rotating the handle 2031 causes the first unlocking surface 506 and the second unlocking surface 509 of the handle 2031 to press against the force-bearing surface 400 of the unlocker 2032, driving the unlocker 2032 to move to the right. When the handle 2031 is in a horizontal state, the first limiting surface 308 presses against the first protruding plate 414 of the unlocker 2032, the second limiting surface 311 presses against the second protruding plate 415, and the left side of the first receiving cavity 314 and the left side of the second receiving cavity 315 press against the right side of the first main board 401, thereby limiting the unlocker 2032 and preventing the unlocker 2032 from continuing to move to the right, thus restricting the range of movement of the unlocker 2032.

[0122] At this time, the locking surface of the positioning protrusion 2021 is located between the first wedge block 412 and the second wedge block 413 of the unlocker 2032. The first wedge block 412 and the second wedge block 413 push open the spring locking hole on the shielding cage, causing the shielding cage to disengage from the positioning protrusion 2021, thereby unlocking the optical module 200. When the optical module 200 is in the unlocked state, pulling the handle 2031 outward can smoothly pull the optical module 200 out of the shielding cage.

[0123] When the user releases the crossbeam 501 of the handle 2031, the return spring 2033 is in a compressed state. Under the reset action of the return spring 2033, the unlocker 2032 moves to the left, and the unlocker 2032 drives the handle 2031 to rotate from top to bottom, so that the handle 2031 achieves automatic reset.

[0124] In some embodiments, since the first boss 316 on the lower housing 202 protrudes from the first side plate 302 and the second boss protrudes from the second side plate 303, the first boss 316 is provided with a third limiting surface 317, which is disposed opposite to the first cantilever 502 of the handle 2031, and the second boss is provided with a fourth limiting surface, which is disposed opposite to the second cantilever 503 of the handle 2031, when the handle 2031 rotates under the action of the return spring 2033, the third limiting surface 317 and the fourth limiting surface limit the handle 2031, preventing the handle 2031 from continuing to rotate, thereby preventing the unlocker 2032 from continuing to move to the left and limiting the movement range of the unlocker 2032.

[0125] In the assembly of the optical module 200 provided in this application embodiment, the unlocker 2032 is first assembled onto the base plate 301 of the lower housing 202, and the unlocker 2032 can move left and right on the base plate 301; then, a return spring 2033 is fixed between the unlocker 2032 and the first receiving cavity 314 and the second receiving cavity 315, and the return spring 2033 provides a tight fit, making it difficult for the unlocker 2032 to come off the lower housing 202; then, the handle 2031 is inserted into the lower housing 202 through the first positioning post 304 and the second positioning post 305, and the first unlocking surface 506 and the second unlocking surface 509 of the handle 2031 are in close contact with the force-bearing surface 400 of the unlocker 2032, so that the handle 2031 can rotate around the first positioning post 304 and the second positioning post 305 under the action of external force. When the handle 2031 rotates, it can drive the unlocker 2032 to move to the right on the lower housing 202.

[0126] When the handle 2031 is in the vertical position, the optical module 200 is in the locked position. When unlocking is required, the handle 2031 is lifted and rotated upward. The unlocker 2032 is in close contact with the force-bearing surface 400 through the first unlocking surface 506 and the second unlocking surface 509. Under the force applied by the handle 2031, the unlocker 2032 moves to the right along the first guide post 306 and the second guide post 309 of the lower housing 202. The first wedge block 412 and the second wedge block 413 of the unlocker 2032 push open the spring piece of the shielding cage. During this process, the return spring 2033 changes from the normal state to the compressed state, and the unlocker 2032 is subjected to an increased leftward elastic force from the return spring 2033.

[0127] When the handle 2031 is rotated to the horizontal position, the unlocker 2032 moves to the right to its limit position. The first wedge block 412 and the second wedge block 413 of the unlocker 2032 extend to the right beyond the positioning protrusion 2021. The inclined surface on the upper side of the wedge block pushes open the spring piece on the shielding cage, so that the spring piece lock hole on the shielding cage disengages from the positioning protrusion 2021, thereby completing the unlocking.

[0128] After unlocking is completed, the handle 2031 is released, the external force acting on the handle 2031 disappears, and the unlocker 2032 moves to the left under the action of the return spring 2033, so that the handle 2031, which is in close contact with the unlocker 2032, returns to its original position under the pushing action of the force surface 400, thus completing the unlocking process.

[0129] In this application, the unlocking surface and the positioning hole of the handle are designed on the same cantilever of the handle. The machining accuracy of the distance between the positioning hole and the unlocking surface is higher, which can better ensure the movement stroke of the unlocker and thus ensure the reliability of the unlocking function. The unlocking surface and the unlocker are subjected to shear force, and the handle material itself resists the reaction force from the unlocker, so the handle is not easy to deform. The crossbeam of the handle is only used to connect the anti-detachment hook of the cantilever and does not transmit the force between the handle and the unlocker. Thus, the crossbeam is not easy to deform and the unlocking adaptability is stronger.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An optical module, characterized in that, include: The lower housing has a base at one end, and the bottom surface of the base has a receiving cavity and a positioning protrusion. The side plate of the base has a positioning post, and the positioning protrusion is a non-movable part. An unlocking mechanism includes a handle and an unlocker. The handle includes a cantilever with a positioning hole and an unlocking surface. The handle is engaged with a positioning post through the positioning hole and can rotate around the positioning post. The unlocker includes a first main board and a second main board. A first insertion plate and a second insertion plate are symmetrically arranged on both sides of the second main board and inserted into a receiving cavity. The first insertion plate includes a first contact surface and a second contact surface, with the second contact surface located to the right of the first contact surface. The second insertion plate includes a third contact surface and a fourth contact surface, with the fourth contact surface located to the right of the third contact surface. One end of the unlocker is connected to the unlocking mechanism. When the handle rotates, it causes the unlocking device to slide on the base. When the unlocking device slides to the right, it disengages the lock on the positioning protrusion. When the unlocking device disengages the lock on the positioning protrusion, the locking surface of the positioning protrusion is located between the first wedge block and the second wedge block of the unlocking device. The inclined surfaces on the upper sides of the first wedge block and the second wedge block disengage the lock on the positioning protrusion, thus completing the unlocking. Return springs are provided on both sides of the receiving cavity. The return springs connect the unlocking device and the base. The return springs cause the unlocking device to slide on the base. The sliding of the unlocking device causes the handle to rotate and reset. Wherein, the right side is the direction of the end of the unlocker near the handle toward the positioning protrusion.

2. The optical module according to claim 1, characterized in that, The positioning hole and the unlocking surface are located on the same cantilever.

3. The optical module according to claim 1, characterized in that, The handle is a sheet metal handle, including a crossbeam, the unlocking surface, and the positioning hole; the crossbeam is used to connect the unlocking surface to the main body structure of the handle.

4. The optical module according to any one of claims 1-3, characterized in that, The base includes a base plate, a first side plate, and a second side plate. The first side plate and the second side plate are arranged opposite to each other. The two ends of the base plate are respectively connected to the first side plate and the second side plate. The positioning protrusion is provided on the base plate. A first positioning post is provided on the first side plate, and a second positioning post is provided on the second side plate. The handle is connected to the base through the first positioning post and the second positioning post, and the handle rotates around the first positioning post and the second positioning post.

5. The optical module according to claim 4, characterized in that, The first motherboard and the second motherboard form a T-shaped structure; The top surfaces of the first insertion plate and the second insertion plate are recessed into the top surface of the second main board; The receiving cavity includes a first receiving cavity and a second receiving cavity, with a gap between the first receiving cavity and the second receiving cavity. The first insertion plate is inserted into the first receiving cavity, and the two ends of the return spring are respectively connected to the first receiving cavity and the first insertion plate. The second insertion plate is inserted into the second receiving cavity, and the two ends of the return spring are respectively connected to the second receiving cavity and the second insertion plate. The second main plate is inserted into the gap between the first receiving cavity and the second receiving cavity.

6. The optical module according to claim 5, characterized in that, The other end of the second motherboard is connected to a connecting plate, which is inclined; the other end of the connecting plate is connected to a first connecting wall and a second connecting wall, and there is a gap between the first connecting wall and the second connecting wall. The other end of the first connecting wall is connected to a first wedge block, and the other end of the second connecting wall is connected to a second wedge block. The distance between the first wedge block and the second wedge block is greater than the distance between the first connecting wall and the second connecting wall. The positioning protrusion is located between the first wedge block and the second wedge block.

7. The optical module according to claim 5, characterized in that, The base plate is also provided with a first mounting groove and a second mounting groove; The base plate is provided with a first guide post and a second guide post, and the unlocker slides on the base plate via the first guide post and the second guide post; The first mounting groove and the second mounting groove are located between the first guide post and the second guide post, and there is a gap between the first mounting groove and the second mounting groove; The first motherboard has a first support plate and a second support plate on both sides, and a first protruding plate and a second protruding plate on the bottom surface of the first motherboard. The first protruding plate and the second protruding plate are located between the first support plate and the second support plate. A first guide groove is provided between the first support plate and the first protruding plate, and the first guide groove is sleeved on the first guide post. A second guide groove is provided between the second support plate and the second protruding plate, and the second guide groove is sleeved on the second guide post. A third guide groove is provided between the first protruding plate and the second protruding plate, and the third guide groove is sleeved on the bottom plate between the first guide groove and the second guide groove.

8. The optical module according to claim 7, characterized in that, The first mounting slot is provided with a first limiting surface, and the second mounting slot is provided with a second limiting surface. The first limiting surface and the second limiting surface are used to limit the unlocker. The first mounting slot is connected to the first receiving cavity, and the second mounting slot is connected to the second receiving cavity.

9. The optical module according to claim 7, characterized in that, The handle includes a crossbeam, a first cantilever, and a second cantilever. The first cantilever and the second cantilever are arranged opposite to each other, and the two ends of the crossbeam are respectively connected to the first cantilever and the second cantilever. The first cantilever is provided with a first positioning hole and a first unlocking surface. The first positioning post is inserted into the first positioning hole. The first unlocking surface is an arc surface. The first unlocking surface is in close contact with the force-bearing surface of the unlocker. The second cantilever is provided with a second positioning hole and a second unlocking surface. The second positioning post is inserted into the second positioning hole. The second unlocking surface is an arc surface and is in close contact with the force-bearing surface of the unlocker.

10. The optical module according to claim 9, characterized in that, The first cantilever is provided with a first connecting beam and a first anti-detachment hook. One end of the first connecting beam is fixedly connected to the first cantilever, and the other end of the first connecting beam is fixedly connected to the first anti-detachment hook. The first guide post and the first protruding plate are located between the first anti-detachment hook and the first cantilever. The second cantilever is provided with a second connecting beam and a second anti-detachment hook. One end of the second connecting beam is fixedly connected to the second cantilever, and the other end of the second connecting beam is fixedly connected to the second anti-detachment hook. The second guide post and the second protruding plate are located between the second anti-detachment hook and the second cantilever.

11. The optical module according to claim 10, characterized in that, There is a gap between the first protruding plate and the first anti-detachment hook, and there is a gap between the second protruding plate and the second anti-detachment hook.

12. The optical module according to claim 4, characterized in that, It also includes a first boss and a second boss. The first boss protrudes from the first side plate, and the second boss protrudes from the second side plate. A third limiting surface is provided on the first boss, which is disposed opposite to the first cantilever of the handle. A fourth limiting surface is provided on the second boss, which is disposed opposite to the second cantilever of the handle. When the handle rotates under the action of the return spring, the third limiting surface and the fourth limiting surface limit the handle to prevent the handle from continuing to rotate.

13. The optical module according to any one of claims 1-3, characterized in that, The first insertion plate is an L-shaped plate; the second insertion plate is an L-shaped plate.

14. An optical module, characterized in that, include: The lower housing has a base at one end, and the bottom surface of the base has a receiving cavity and a positioning protrusion. The side plate of the base has a positioning post, and the positioning protrusion is a non-movable part. An unlocking mechanism includes a handle and an unlocker. The handle includes an unlocking surface and a positioning hole. The unlocking surface contacts the unlocker and is used to push the unlocker to move and unlock. The handle is engaged with a positioning post through the positioning hole and can rotate around the positioning post. The unlocker includes a first main board and a second main board. A first insertion plate and a second insertion plate are symmetrically arranged on both sides of the second main board and inserted into the receiving cavity. The first insertion plate includes a first contact surface and a second contact surface, with the second contact surface located to the right of the first contact surface. The second insertion plate includes a third contact surface and a fourth contact surface, with the fourth contact surface located to the right of the third contact surface. One end of the lock is in close contact with the unlocking surface. When the handle is rotated, the unlocker slides on the base. When the unlocker slides to the right, it disengages the lock on the positioning protrusion. When the unlocker disengages the lock on the positioning protrusion, the locking surface of the positioning protrusion is located between the first and second wedge blocks of the unlocker. The lock on the positioning protrusion is disengaged by the inclined surfaces on the upper sides of the first and second wedge blocks, thus completing the unlocking. Return springs are provided on both sides of the receiving cavity. The return springs connect the unlocker to the base. The return springs drive the unlocker to slide on the base. The sliding of the unlocker drives the handle to rotate and reset. Wherein, the right side is the direction of the end of the unlocker near the handle toward the positioning protrusion.

15. The optical module according to claim 14, characterized in that, The positioning hole and the unlocking surface are located on the same cantilever.

16. The optical module according to claim 14, characterized in that, The handle is a sheet metal handle, including a crossbeam, the unlocking surface, and the positioning hole; the crossbeam is used to connect the unlocking surface to the main body structure of the handle.

17. The optical module according to any one of claims 14-16, characterized in that, The base includes a base plate, a first side plate, and a second side plate. The first side plate and the second side plate are arranged opposite to each other. The two ends of the base plate are respectively connected to the first side plate and the second side plate. The positioning protrusion is provided on the base plate. A first positioning post is provided on the first side plate, and a second positioning post is provided on the second side plate. The handle is connected to the base through the first positioning post and the second positioning post, and the handle rotates around the first positioning post and the second positioning post.

18. The optical module according to claim 17, characterized in that, The first motherboard and the second motherboard form a T-shaped structure; The top surfaces of the first insertion plate and the second insertion plate are recessed into the top surface of the second main board; The receiving cavity includes a first receiving cavity and a second receiving cavity, with a gap between the first receiving cavity and the second receiving cavity. The first insertion plate is inserted into the first receiving cavity, and the two ends of the return spring are respectively connected to the first receiving cavity and the first insertion plate. The second insertion plate is inserted into the second receiving cavity, and the two ends of the return spring are respectively connected to the second receiving cavity and the second insertion plate. The second main plate is inserted into the gap between the first receiving cavity and the second receiving cavity.

19. The optical module according to claim 18, characterized in that, The other end of the second motherboard is connected to a connecting plate, which is inclined; the other end of the connecting plate is connected to a first connecting wall and a second connecting wall, and there is a gap between the first connecting wall and the second connecting wall. The other end of the first connecting wall is connected to a first wedge block, and the other end of the second connecting wall is connected to a second wedge block. The distance between the first wedge block and the second wedge block is greater than the distance between the first connecting wall and the second connecting wall. The positioning protrusion is located between the first wedge block and the second wedge block.

20. The optical module according to claim 18, characterized in that, The base plate is also provided with a first mounting groove and a second mounting groove; The base plate is provided with a first guide post and a second guide post, and the unlocker slides on the base plate via the first guide post and the second guide post; The first mounting groove and the second mounting groove are located between the first guide post and the second guide post, and there is a gap between the first mounting groove and the second mounting groove; The first motherboard has a first support plate and a second support plate on both sides, and a first protruding plate and a second protruding plate on the bottom surface of the first motherboard. The first protruding plate and the second protruding plate are located between the first support plate and the second support plate. A first guide groove is provided between the first support plate and the first protruding plate, and the first guide groove is sleeved on the first guide post. A second guide groove is provided between the second support plate and the second protruding plate, and the second guide groove is sleeved on the second guide post. A third guide groove is provided between the first protruding plate and the second protruding plate, and the third guide groove is sleeved on the bottom plate between the first guide groove and the second guide groove.

21. The optical module according to claim 20, characterized in that, The first mounting slot is provided with a first limiting surface, and the second mounting slot is provided with a second limiting surface. The first limiting surface and the second limiting surface are used to limit the unlocker. The first mounting slot is connected to the first receiving cavity, and the second mounting slot is connected to the second receiving cavity.

22. The optical module according to claim 20, characterized in that, The handle includes a crossbeam, a first cantilever, and a second cantilever. The first cantilever and the second cantilever are arranged opposite to each other, and the two ends of the crossbeam are respectively connected to the first cantilever and the second cantilever. The first cantilever is provided with a first positioning hole and a first unlocking surface. The first positioning post is inserted into the first positioning hole. The first unlocking surface is an arc surface. The first unlocking surface is in close contact with the force-bearing surface of the unlocker. The second cantilever is provided with a second positioning hole and a second unlocking surface. The second positioning post is inserted into the second positioning hole. The second unlocking surface is an arc surface and is in close contact with the force-bearing surface of the unlocker.

23. The optical module according to claim 22, characterized in that, The first cantilever is provided with a first connecting beam and a first anti-detachment hook. One end of the first connecting beam is fixedly connected to the first cantilever, and the other end of the first connecting beam is fixedly connected to the first anti-detachment hook. The first guide post and the first protruding plate are located between the first anti-detachment hook and the first cantilever. The second cantilever is provided with a second connecting beam and a second anti-detachment hook. One end of the second connecting beam is fixedly connected to the second cantilever, and the other end of the second connecting beam is fixedly connected to the second anti-detachment hook. The second guide post and the second protruding plate are located between the second anti-detachment hook and the second cantilever.

24. The optical module according to claim 23, characterized in that, There is a gap between the first protruding plate and the first anti-detachment hook, and there is a gap between the second protruding plate and the second anti-detachment hook.

25. The optical module according to claim 17, characterized in that, It also includes a first boss and a second boss. The first boss protrudes from the first side plate, and the second boss protrudes from the second side plate. A third limiting surface is provided on the first boss, which is disposed opposite to the first cantilever of the handle. A fourth limiting surface is provided on the second boss, which is disposed opposite to the second cantilever of the handle. When the handle rotates under the action of the return spring, the third limiting surface and the fourth limiting surface limit the handle to prevent the handle from continuing to rotate.

26. The optical module according to any one of claims 14-16, characterized in that, The first insertion plate is an L-shaped plate; the second insertion plate is an L-shaped plate.

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