Optical module

Abstract

The utility model provides an optical module, and relates to the technical field of optical communication. The optical module comprises an upper shell and a lower shell which are buckled with each other, a containing cavity is formed between the upper shell and the lower shell and used for containing a circuit board, the optical module is provided with an electric port and an optical port which are opposite, the electric port and the optical port are communicated with the containing cavity at the two ends of the optical module respectively, and the electric port is used for configuring the electric connecting end of the circuit board. The optical module is electrically connected with equipment outside the optical module through the circuit board; the upper shell and the lower shell are locked and fixed at the position close to the electric port through a first screw, and the first screw locks the upper shell and the lower shell on the side face of the optical module in the direction perpendicular to the buckling direction of the upper shell and the lower shell. Therefore, according to the optical module, the upper shell and the lower shell are fixed through the first screws on the side faces, so that the wiring space of the circuit board is larger, more components and wires can be arranged, the integration degree of the optical module is improved, the speed of the optical module is further improved, meanwhile, the size of the optical module does not need to be enlarged, and the miniaturization scene requirement is met.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to an optical module. Background Art

[0002] As an important part of modern communication technology, optical communication has an increasingly urgent need for high-speed, stable and reliable transmission. As the core device of the optical communication system, the improvement of the performance and technical level of the optical module is crucial to achieve higher speed and longer distance optical transmission. The optical module is an optoelectronic device that performs photoelectric and electro-optical conversion in the optical communication industry, including a transmitting and receiving part; its function is to convert the electrical signal into an optical signal at the transmitting end, transmit it to the optical communication network through optical fiber, and receive the optical signal from the optical communication network at the receiving end and convert the optical signal into an electrical signal. When in use, the optical module is plugged into the metal cage of the host device.

[0003] At present, as the communication rate is getting higher and higher, the optical communication field has higher and higher requirements for the rate of optical modules. In high-speed optical modules, the circuit board space is limited, and it is difficult to arrange more devices and wiring, resulting in limited functions of the optical module. If the circuit board space is expanded, the overall volume of the optical module will be too large, which is not conducive to the needs of miniaturization scenarios. For example, in order to increase the communication rate and save space, the industry requires the miniaturization of optical modules to integrate more optical modules within the unit volume of communication equipment (such as optical switches / servers, etc.). Therefore, a variety of miniaturization packaging standards for optical modules have been formulated. Optical modules need to increase the degree of integration as much as possible within the shell size specified by the standard to further increase the rate of optical modules. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an optical module that can arrange more components and routings, improve the integration of the optical module, further improve the rate of the optical module, and adapt to the scenario requirements of miniaturized packaging.

[0005] In one aspect of an embodiment of the present application, an optical module is provided, comprising: an upper shell and a lower shell that are interlocked, a cavity is formed between the upper shell and the lower shell for accommodating a circuit board, the optical module has an electrical port and an optical port that are opposite to each other, the electrical port and the optical port are respectively connected to the cavity at two ends of the optical module, the electrical port is used to configure an electrical connection end of the circuit board, so as to electrically connect the optical module to a device outside the circuit board;

[0006] The upper shell and the lower shell are fastened and fixed near the electrical port by a first screw, and the first screw locks the upper shell and the lower shell on the side of the optical module along a buckling direction perpendicular to the upper shell and the lower shell.

[0007] Optionally, a baffle is provided on the upper shell near the electrical port, and a threaded hole is formed on the baffle; a connecting protrusion is provided on the lower shell, and a connecting hole is provided on the connecting protrusion, and the first screw passes through the connecting hole and the threaded hole in sequence to connect the upper shell and the lower shell.

[0008] Optionally, the optical module further comprises the circuit board disposed in the cavity, the circuit board is arranged perpendicular to the buckling direction of the upper shell and the lower shell, and the electrical connection end of the circuit board is passed through the electrical port;

[0009] The blocking bar protrudes from the upper shell toward the lower shell and extends between two opposite side surfaces of the optical module to block the gap between the circuit board and the upper shell at the electrical port; the blocking bar is provided with the threaded holes at both ends of its extension direction;

[0010] The connecting protrusions are arranged on two opposite sides of the lower shell, respectively opposite to two ends of the blocking bar, and the connecting holes are respectively opposite to the threaded holes.

[0011] Optionally, the upper shell and the lower shell are further fixed by a second screw, and the second screw is arranged along the buckling direction of the upper shell and the lower shell.

[0012] Optionally, the upper shell and the lower shell are respectively provided with mutually matching limiting grooves and limiting protrusions at the joints where the upper shell and the lower shell are buckled together, so as to limit the relative positions of the upper shell and the lower shell when buckled together.

[0013] Optionally, the limiting protrusion is arranged on the upper shell, and the limiting groove is arranged on the lower shell; or, the limiting protrusion is arranged on the lower shell, and the limiting groove is arranged on the upper shell.

[0014] Optionally, the lower shell is provided with a positioning structure, and the circuit board is interference-fitted with the positioning structure.

[0015] Optionally, the positioning structure includes a positioning column arranged on the lower shell, a convex rib is arranged on the outer periphery of the positioning column, a positioning hole is arranged on the circuit board, and the positioning hole is clearance-fitted with the positioning column and interference-fitted with the convex rib.

[0016] Optionally, the convex rib extends along the axial direction of the positioning column, and the positioning column is provided with at least one convex rib along its outer wall.

[0017] Optionally, the optical module further comprises a locking structure, wherein the locking structure has a locking inclined surface, wherein the locking inclined surface is located on a side wall of the upper housing, and the optical module is locked with an external device via the locking inclined surface;

[0018] The optical module further comprises a pull ring, an unlocking portion is arranged at the end of an extending arm of the pull ring, the unlocking portion comprises an unlocking inclined surface, and the optical module is unlocked from the external device through the unlocking inclined surface;

[0019] The inclination angle of the unlocking inclined surface is greater than the inclination angle of the locking inclined surface.

[0020] In the optical module provided by the embodiment of the present application, the upper shell and the lower shell are locked and fixed by the first screw near the electrical port, and the first screw locks the upper shell and the lower shell on the side of the optical module along the buckling direction perpendicular to the upper shell and the lower shell. By adopting the side first screw fastening method near the electrical port instead of the up and down screw fastening method, the problem of needing to open holes on the circuit board due to interference of the up and down screws can be avoided. In this way, when the upper shell and the lower shell are fastened by the side, there is no need to open holes on the circuit board to avoid, which can save space on the circuit board, so that there is more space for layout and routing on the circuit board, which is convenient for arranging more devices on the circuit board. In this way, the optical module of the present application is fixed by the first screw on the side, so that the wiring space of the circuit board is larger, more components and routing can be arranged, and the integration of the optical module is improved to further improve the speed of the optical module, and at the same time, there is no need to expand the volume of the optical module to meet the needs of miniaturized packaging scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is one of the schematic diagrams of the optical module structure provided in this embodiment;

[0023] Figure 2 This is one of the exploded schematic diagrams of the optical module provided in this embodiment;

[0024] Figure 3 is a schematic diagram of the structure of the lower housing of the optical module provided in this embodiment;

[0025] Figure 4 yes Figure 3 The enlarged structural diagram at B in the middle;

[0026] Figure 5 This is the second schematic diagram of the explosion of the optical module provided in this embodiment;

[0027] Figure 6 is a schematic diagram of the upper housing structure of the optical module provided in this embodiment;

[0028] Figure 7 This is the second schematic diagram of the optical module structure provided in this embodiment;

[0029] Figure 8 yes Figure 7 The enlarged structural diagram at A in the middle;

[0030] Fig. 9 This is one of the partial structural schematic diagrams of the pull ring of the optical module provided in this embodiment;

[0031] Fig.10 This is the second schematic diagram of the partial structure of the pull ring of the optical module provided in this embodiment.

[0032] Icons: 10-upper shell; 110-locking slope; 111-avoidance groove; 112-accommodating groove; 113-recessed bottom surface; 12-long groove; 13-limiting groove; 14-threaded hole; 15-blocking bar; 20-lower shell; 21-accommodating cavity; 22-positioning column; 220-convex rib; 23-first screw; 24-second screw; 25-limiting convex; 26-connecting convex; 260-connecting hole; 30-circuit board; 31-positioning hole; 40-pull ring; 40a-force-applying part; 40b-sliding part; 41-extension arm; 42-unlocking part; 420-unlocking slope; 43-clamping convex; 44-bending part. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0034] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Please refer to Figure 1As shown, an embodiment of the present application provides an optical module, including: an upper shell 10 and a lower shell 20 that are interlocked, a cavity 21 is formed between the upper shell 10 and the lower shell 20 for accommodating a circuit board 30, the optical module has a relative electrical port and an optical port, the electrical port and the optical port are respectively connected to the cavity 21 at both ends of the optical module, the electrical port is used to configure the electrical connection end of the circuit board 30, so as to electrically connect the device outside the optical module through the circuit board 30; the upper shell 10 and the lower shell 20 are locked and fixed near the electrical port by a first screw 23, and the first screw 23 locks the upper shell 10 and the lower shell 20 on the side of the optical module along a direction perpendicular to the engagement of the upper shell 10 and the lower shell 20.

[0037] The circuit board 30 is located between the upper housing 10 and the lower housing 20. Figure 1 The optical module forms an electrical connection end at the middle right end, and the electrical connection end of the circuit board 30 is configured through the electrical port to be electrically connected to an external device to realize electrical signal transmission.

[0038] In the present application, the upper shell 10 and the lower shell 20 are fixed by a first screw 23 passing through the side.

[0039] It should be noted that, for example Figure 2 As shown, the upper shell 10 and the lower shell 20 are buckled together in the up-down direction, and the optical port and the electrical port of the optical module are respectively located in the left-right direction, and the two opposite surfaces of the optical module in the front-to-back direction are the side surfaces of the optical module, that is, the aforementioned side surfaces are the sides of the optical port and the electrical port of the optical module, and the surfaces where the upper shell 10 and the lower shell 20 are connected, and the first screws 23 are respectively arranged on these two side surfaces to lock the first shell and the second shell.

[0040] Thus, in the optical module provided in the embodiment of the present application, the upper housing 10 and the lower housing 20 are connected at the electrical port near the circuit board 30 by a first screw 23 perpendicular to the fastening direction of the upper housing 10 and the lower housing 20. The method of fastening by the first screw 23 on the side near the electrical port can reduce the use of Figure 5 The second screw 24 fixes the upper shell 10 and the lower shell 20 by locking in the up and down direction. Figure 5When the second screw 24 fastens the upper shell 10 and the lower shell 20, a hole needs to be opened on the circuit board 30 to avoid interference, which occupies the wiring space of the circuit board 30. For this reason, when the upper shell 10 and the lower shell 20 of the present application are fastened by the first screw 23 on the side near the electrical port, there is no need to open a hole on the circuit board 30 to avoid it, which can save space on the circuit board 30, so that there is more space for laying parts and wiring on the circuit board 30, which is convenient for arranging more devices on the circuit board 30. In this way, the optical module of the present application is fixed by the first screw 23 on the side, so that the wiring space of the circuit board 30 is larger, more components and wiring can be arranged, and the integration of the optical module is improved to further improve the speed of the optical module, and at the same time, there is no need to expand the volume of the optical module, so as to adapt to the scene requirements of miniaturized packaging.

[0041] For example, Figure 2 , Figure 3 Connecting protrusions 26 are respectively provided on the two side surfaces of the middle and lower shell 20 close to the electrical port, and connecting holes 260 are formed on the connecting protrusions 26. Threaded holes 14 are provided at corresponding positions of the upper shell 10. The threaded holes 14 are located on the baffle 15 at the bottom of the upper shell 10, and threaded holes 14 are respectively provided at both ends of the baffle 15. After the first screws 23 on both sides pass through the connecting holes 260 and the threaded holes 14 in turn, the upper shell 10 and the lower shell 20 can be fastened from the side.

[0042] The optical module further includes a circuit board 30 disposed in the cavity 21. The circuit board 30 is arranged perpendicular to the fastening direction of the upper shell 10 and the lower shell 20. The electrical connection end of the circuit board 30 is disposed at the electrical port.

[0043] The blocking bar 15 protrudes from the upper housing 10 toward the lower housing 20 and extends between two opposite side surfaces of the optical module to block the gap between the circuit board 30 at the electrical port and the upper housing 10; the blocking bar 15 is provided with threaded holes 14 at both ends of its extension direction;

[0044] The connecting protrusions 26 are disposed on two opposite sides of the lower housing 20 , respectively facing two ends of the blocking bar 15 , and the connecting holes 260 are respectively facing the threaded holes 14 .

[0045] The upper shell 10 and the lower shell 20 are provided with a stopper 15 at the electrical port near the circuit board 30, which can reduce the gap at the electrical port and improve the EMI (Electromagnetic Interference) performance of the optical module. The stopper 15 of the upper shell 10 is an existing structure. The present application uses the stopper 15 to set threaded holes 14 at both ends thereof for matching the first screw 23, so as to achieve a method of locking the first screw 23 from the side, without adding other structures to set the threaded holes 14, thereby simplifying the structure of the upper shell 10.

[0046] On this basis, please refer to Figure 5As shown, the upper shell 10 and the lower shell 20 can also be fixed by a second screw 24 , and the second screw 24 is arranged along the buckling direction of the upper shell 10 and the lower shell 20 .

[0047] When the upper shell 10 and the lower shell 20 are buckled together and fixed by screws, the first screw 23 can be used to pass through the upper shell 10 and the lower shell 20 in the lateral direction for fixing, or the second screw 24 can be used to pass through the upper shell 10 and the lower shell 20 in the up and down direction for fixing; both directions of fixing are adopted in this application.

[0048] The second screws 24 pass through the upper shell 10 and the lower shell 20 in the up-down direction for fixing, so that the upper shell 10 and the lower shell 20 can be conventionally fixed at other positions except the electrical port position, so that the optical module is fixed more firmly as a whole.

[0049] In addition, the upper shell 10 and the lower shell 20 are respectively provided with a limiting groove 13 and a limiting protrusion 25 that cooperate with each other at the buckling joint between the two, so as to limit the relative position of the upper shell 10 and the lower shell 20 when buckled.

[0050] The limiting protrusion 25 is arranged on the upper shell 10 , and the limiting groove 13 is arranged on the lower shell 20 ; or, the limiting protrusion 25 is arranged on the lower shell 20 , and the limiting groove 13 is arranged on the upper shell 10 .

[0051] like Figure 3 , Figure 6 As shown, in one implementation of the present application, the upper shell 10 is provided with a limiting groove 13, and the lower shell 20 is provided with a limiting protrusion 25, the limiting groove 13 is located at a relative edge position on the side wall of the upper shell 10, and the limiting protrusion 25 is located at a relative edge position on the side wall of the lower shell 20, and the limiting groove 13 and the limiting protrusion 25 correspond to each other.

[0052] When the upper shell 10 and the lower shell 20 are buckled together, the limiting groove 13 of the upper shell 10 is plugged into the limiting protrusion 25 of the lower shell 20, and the upper shell 10 and the lower shell 20 can slide relative to each other. The limiting groove 13 and the limiting protrusion 25 are used for sliding limitation of the two. The limiting groove 13 and the limiting protrusion 25 form a runway-shaped matching structure, which is convenient for adjusting the relative position of the upper shell 10 and the lower shell 20, and it is easy to improve the assembly accuracy of the optical module, so that the dimensions of the electrical port end of the assembled optical module meet the increasingly higher requirements of the standard, so as to achieve stable electrical connection with external equipment.

[0053] Furthermore, when the circuit board 30 is accommodated in the lower housing 20, a positioning structure is provided on the lower housing 20, and the circuit board 30 is interference-fitted with the positioning structure. Figure 3As shown, the positioning structure includes a positioning column 22 arranged on the lower shell 20, and a convex rib 220 is arranged on the periphery of the positioning column 22. A positioning hole 31 is arranged on the circuit board 30, and the positioning hole 31 is clearance-fitted with the positioning column 22 and interference-fitted with the convex rib 220.

[0054] The rib 220 extends along the axial direction of the positioning column 22, and the positioning column 22 is provided with at least one rib 220 along its outer wall. For example, the rib 220 may be one, two, three or more. Figure 4 There are three middle convex ribs 220 , and the three convex ribs 220 are evenly distributed around the circumference of the outer wall of the positioning column 22 .

[0055] For example, two positioning posts 22 are provided at the rear end of the lower housing 20 near the electrical port. Figure 3 , Figure 4 As shown, the positioning column 22 is a cylinder, and a convex rib 220 is formed on the outer peripheral wall of the positioning column 22, and a corresponding position of the circuit board 30 is provided with Figure 5 The circuit board 30 is sleeved on the positioning column 22 through the positioning hole 31, and the circuit board 30 and the positioning column 22 are firmly connected through the convex rib 220, thereby preventing the circuit board 30 from shaking.

[0056] The convex rib 220 and the positioning hole 31 have an interference fit, so that the circuit board 30 can be stably fixed in the cavity 21 . In addition, the circuit board 30 can be conveniently connected to the positioning column 22 , thereby realizing convenient installation of the circuit board 30 .

[0057] The positioning column 22 can also be arranged at the periphery of the screw hole of the second screw 24 , and a convex rib can be arranged at the periphery of the positioning column. Similarly, the circuit board 30 and the positioning column 22 can be firmly connected by the convex rib 220 .

[0058] In addition, the optical module also includes a locking structure, which includes a locking bevel 110. The locking bevel 110 is located on the side wall of the upper housing 10. The optical module is locked with the external device through the locking bevel 110, and the locking structure is located in the upper housing 10 as a whole. The locking structure is arranged as a whole in the upper housing 10, which avoids the additional assembly tolerance generated when the locking structure is formed by the combination of the upper housing 10 and the lower housing 20, effectively improves the position accuracy of the locking structure, so as to meet the high-precision requirements of the QDD1.6T optical module protocol for the locking position, and also reduces the requirements for the assembly accuracy of the upper housing and the lower housing.

[0059] When the optical module is connected to an external device, the two are locked by the locking structure; when unlocking, the optical module and the external device are unlocked by pulling the pull ring 40.

[0060] Specifically, Figure 7 , Figure 8As shown, the locking structure includes a locking bevel 110 to adapt to the bevel unlocking surface of the 1.6T external device, thereby improving the firmness of the locking of the two, so that the optical module and the external device can transmit electrical signals more stably after locking, thereby improving the integrity of the signal.

[0061] The optical module further includes a pull ring 40, which includes a force-applying portion 40a and a sliding portion 40b connected to each other, and the sliding portion 40b includes extension arms 41 located at both sides of the optical module, and an unlocking portion 42 is provided at the end of the extension arm 41 relatively far from the force-applying portion 40a. The unlocking portion 42 includes an unlocking inclined surface 420, and the optical module is unlocked from the external device through the unlocking inclined surface 420.

[0062] Both sides of the optical module are provided with interconnected receiving grooves 112 and avoidance grooves 111, and the locking inclined surface 110 is provided at the connection between the avoidance groove 111 and the receiving groove 112. The receiving grooves 112 on both sides are used to respectively receive the two extension arms 41 of the pull ring 40, and the avoidance groove 111 is used to avoid the unlocking portion 42. The locking inclined surface 110 and the avoidance groove 111 are integrally provided on the upper housing 10.

[0063] When the optical module is locked with the external device, locking springs are provided on both sides of the external device, and the movable spring on one side corresponds to the locking inclined surface 110 on one side. When the end face of the locking spring is opposite to and abuts against the locking inclined surface 110, the optical module and the external device are locked.

[0064] When the optical module and the external device are unlocked, the unlocking is performed by sliding the pull ring 40 on the upper housing 10. Fig. 9 , Fig.10 As shown, the pull ring 40 has two extending arms 41 arranged opposite to each other to clamp on both sides of the upper shell 10, and the ends of the two extending arms 41 are respectively provided with Fig.10 The unlocking portion 42 and the extension arm 41 are correspondingly disposed in the accommodating groove 112 . The unlocking portion 42 is located in the avoiding groove 111 , and an unlocking inclined surface 420 is formed on the unlocking portion 42 .

[0065] The extension arm 41 of the pull ring 40 has a bent portion 44 at the connection between the unlocking portion 42 , which is bent toward the inside of the upper housing 10 relative to the unlocking portion 42 and the extension arm 41 to avoid the locking inclined surface 110 and the locking spring.

[0066] The receiving groove 112 also has a relatively concave bottom surface 113 near the locking inclined surface 110 to accommodate the bent portion. The unlocking inclined surface 420 is near the end where the unlocking portion 42 is connected to the bent portion 44 , and the inclination angle of the unlocking inclined surface 420 is greater than the inclination angle of the locking inclined surface 110 .

[0067] When unlocking, the pull ring 40 is pulled by the force-applying portion 40a, driving the extension arm 41 and the unlocking portion 42 to slide, and the unlocking inclined surface 420 of the unlocking portion 42 lifts the locking spring piece, so that the locking spring piece is separated from the locking inclined surface 110, thereby achieving unlocking.

[0068] Figure 5 In the embodiment, a long groove 12 is provided on the upper shell 10, and a pull ring 40 is provided with a latching protrusion 43 facing the long groove 12. The latching protrusion 43 moves along the long groove 12 to make the pull ring 40 slide a preset stroke relative to the upper shell 10. The preset stroke of the pull ring 40 is the length of the long groove 12, thereby limiting the sliding range of the pull ring 40 to avoid problems such as the pull ring 40 sliding beyond the range and causing locking failure or unlocking difficulty.

[0069] The optical module provided in the embodiment of the present application first installs the circuit board 30 into the lower shell 20 with an interference fit, and then covers the upper shell 10. Then, the upper shell 10 and the lower shell 20 are tightened by a fixture to align the reference surfaces of the electrical port ends. Finally, the electrical port positions of the upper shell 10 and the lower shell 20 are locked by the first screw 23, and the other positions of the upper shell 10 and the lower shell 20 are locked by the second screw 24. The pull ring 40 is installed to complete the assembly of the optical module.

[0070] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical module, characterized in that: include: An upper shell and a lower shell that are buckled together, a cavity is formed between the upper shell and the lower shell for accommodating a circuit board, the optical module has an electrical port and an optical port that are opposite to each other, the electrical port and the optical port are connected to the cavity at two ends of the optical module respectively, and the electrical port is used to configure the electrical connection end of the circuit board so as to electrically connect the device outside the optical module through the circuit board; The upper shell and the lower shell are fastened and fixed near the electrical port by a first screw, and the first screw locks the upper shell and the lower shell on the side of the optical module along a buckling direction perpendicular to the upper shell and the lower shell.

2. The optical module according to claim 1, characterized in that: The upper shell is provided with a baffle near the electrical port, and the baffle is provided with a threaded hole; the lower shell is provided with a connecting protrusion, and the connecting protrusion is provided with a connecting hole, and the first screw passes through the connecting hole and the threaded hole in sequence to connect the upper shell and the lower shell.

3. The optical module according to claim 2, characterized in that: The optical module further includes the circuit board disposed in the cavity, the circuit board being arranged perpendicular to the buckling direction of the upper shell and the lower shell, and the electrical connection end of the circuit board being passed through the electrical port; The blocking bar protrudes from the upper shell toward the lower shell and extends between two opposite side surfaces of the optical module to block the gap between the circuit board and the upper shell at the electrical port; the blocking bar is provided with the threaded holes at both ends of its extension direction; The connecting protrusions are arranged on two opposite sides of the lower shell, respectively opposite to two ends of the blocking bar, and the connecting holes are respectively opposite to the threaded holes.

4. The optical module according to claim 1, characterized in that: The upper shell and the lower shell are also fixed by a second screw, and the second screw is arranged along the buckling direction of the upper shell and the lower shell.

5. The optical module according to any one of claims 1 to 4, characterized in that: The upper shell and the lower shell are respectively provided with mutually matching limiting grooves and limiting protrusions at the joints where the upper shell and the lower shell are buckled, so as to limit the relative positions of the upper shell and the lower shell when buckled.

6. The optical module according to claim 5, characterized in that: The limiting protrusion is arranged on the upper shell, and the limiting groove is arranged on the lower shell; or, the limiting protrusion is arranged on the lower shell, and the limiting groove is arranged on the upper shell.

7. The optical module according to any one of claims 1 to 4, characterized in that: The lower shell is provided with a positioning structure, and the circuit board is interference-fitted with the positioning structure.

8. The optical module according to claim 7, characterized in that: The positioning structure comprises a positioning column arranged on the lower shell, a convex rib is arranged on the outer periphery of the positioning column, a positioning hole is arranged on the circuit board, and the positioning hole is clearance-fitted with the positioning column and interference-fitted with the convex rib.

9. The optical module according to claim 8, characterized in that: The convex rib extends along the axial direction of the positioning column, and the positioning column is provided with at least one convex rib along its outer wall.

10. The optical module according to any one of claims 1 to 4, characterized in that: The optical module further comprises a locking structure, wherein the locking structure comprises a locking inclined surface, wherein the locking inclined surface is located on a side wall of the upper housing, and the optical module is locked with an external device via the locking inclined surface; The optical module further comprises a pull ring, an unlocking portion is arranged at the end of an extending arm of the pull ring, the unlocking portion comprises an unlocking inclined surface, and the optical module is unlocked from the external device through the unlocking inclined surface; The inclination angle of the unlocking inclined surface is greater than the inclination angle of the locking inclined surface.

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