Optical communication module with improved robustness and reliability

Abstract

The utility model discloses a kind of optical communication module of improving stable reliability, comprising: upper shell, optical communication module main body, lower shell, pull belt, rivet and U-shaped rivet pressing piece;Upper shell is provided with foolproof limiting post and upper through-hole inside;Optical communication module main body includes PCBA and cable, the side of PCBA is provided with limiting card slot, optical communication module main body is placed and positioned in upper cavity, foolproof limiting post is clamped into corresponding card slot, to prevent PCBA from moving back and forth;Lower shell is provided with lower through-hole;Pull belt includes pull ring part and two left and right interval setting unlocking arms, reset spring is arranged between pull belt and lower shell;Lower shell is spliced downward in upper shell, and the upper end and lower end of PCBA are limited by upper shell and lower shell respectively;Rivet passes through upper through-hole and lower through-hole, to connect and position upper shell and lower shell;U-shaped rivet pressing piece clamps upper shell and lower shell, and its two end rivet pressing is bent. In this way, it is easy to assemble and stably position, especially PCBA is reliably positioned, to prevent shaking.

Description

Technical Field

[0001] This utility model relates to the field of optical communication modules, and in particular to an optical communication module that improves stability and reliability. Background Technology

[0002] Optical communication modules, also known as optical modules, are widely used in servers, switches, storage devices, communication equipment rooms, data centers, and other applications. With the development of intelligent and AI technologies, the demand for optical communication modules is increasing, and various application scenarios are placing higher requirements on their quality.

[0003] For example, CN119620313A discloses a QSFP-DD packaged 400G optical module structure, belonging to the field of optical module technology. It includes a module cover, a module base, and a pull ring. The module cover and module base form a receiving cavity, and the receiving cavity houses an MPO fiber optic adapter and a module circuit board assembly. The module circuit board assembly includes a PCB board, which is mounted on the module base. The pull ring is located at one end of the module cover and module base. The pull ring and module base are assembled and fixed by a spring. The end of the pull ring away from the module cover and module base has a pull ring handle. In use, the pull ring and module base are assembled and fixed by the spring. The PCB board is fixed above the module base, and then the module cover is fixed on the module base to complete the assembly. The module cover and module base are fixed by screws.

[0004] In practical use, existing optical modules (such as the QSFP-DD packaged 400G optical module mentioned above) generally suffer from unsatisfactory durability and reliability. The reasons are as follows: 1. The PCB board is prone to shaking; 2. The overall assembly stability of the optical module is difficult to meet more requirements; 3. When pulling the pull ring, it is actually difficult to achieve a strictly aligned front and back when pulling manually. The tilted pulling direction will generate a lateral force, which can easily cause the left and right unlocking arms of the pull ring to deform left and right due to the lateral force, resulting in poor pulling or even loosening of the unlocking arms.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide an optical communication module that improves stability and reliability. It is easy to assemble and stably positioned, especially the PCBA is reliably positioned to prevent shaking.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An optical communication module for improving robustness and reliability includes: The upper shell includes a top wall and two upper side walls connected to the left and right sides of the top wall. The top wall and the two upper side walls form an upper cavity. A foolproof limiting post is provided in the upper cavity. The top wall is provided with an upper through hole. The optical communication module body includes a PCBA and cables connected to the PCBA; the side of the PCBA is provided with a limiting slot, the optical communication module body is placed and positioned in the upper cavity, and the foolproof limiting post is inserted into the corresponding slot to prevent the PCBA from moving back and forth; The lower shell includes a bottom wall and two lower side walls connected to the left and right sides of the bottom wall. The bottom wall and the two lower side walls form a lower cavity. The bottom wall is provided with a lower through hole. The pull strap includes a pull ring portion and two unlocking arms spaced apart on the left and right sides and connected to the front end of the pull ring portion; the unlocking arms are disposed on the lower shell, and a return spring is disposed between the pull strap and the lower shell; the lower shell is fitted downward to the upper shell, and the upper and lower ends of the PCBA are respectively restricted by the upper shell and the lower shell; Rivets, which pass through the upper through hole and the lower through hole and are riveted, are used to connect and position the upper shell and the lower shell. The U-shaped rivet clamps clamp the upper shell and the lower shell, and their two ends are riveted and bent.

[0008] As a preferred embodiment, two anti-foolproof limiting posts are provided, which are respectively set on the inner side of the two upper side walls. One is a circular limiting post and the other is a square limiting post. Correspondingly, two limiting slots are provided, which are respectively set on the left and right sides of the PCBA. One is a circular slot and the other is a square slot.

[0009] As a preferred embodiment, the bottom surface of the top wall and the top surface of the bottom wall are both provided with protruding pads, and the pads are supported on the corresponding top and bottom surfaces of the PCBA.

[0010] As a preferred embodiment, the inner surface of the upper sidewall is provided with an interference point, and the PCBA is installed into the upper cavity, with the left and right sides of the PCBA tightly engaged and positioned with the corresponding interference point.

[0011] As a preferred embodiment, the inner surface of the upper sidewall is recessed with a groove, the outer surface of the lower sidewall is protruded with a matching protrusion, the lower shell is snapped onto the upper shell, the lower sidewall extends into the inner side of the upper sidewall, and the protrusion is engaged in the corresponding groove.

[0012] As a preferred embodiment, both the upper shell and the lower shell have two riveting holes. The depth of the riveting holes extends vertically. The U-shaped riveting piece passes through the four riveting holes and is riveted and fixed to form a clamping and positioning for the top wall, the bottom wall, the two upper side walls, and the two lower side walls.

[0013] As a preferred embodiment, the projection of the riveting through hole of the upper shell in the depth direction is located on the outer side of the corresponding upper sidewall, and the riveting through hole of the lower shell penetrates the lower sidewall.

[0014] As a preferred embodiment, the unlocking arm is provided with a convex arc-shaped unlocking part and a spring action part. The convex arc-shaped unlocking part is located in front of the spring action part. The front end of the reset spring acts on the spring action part, and the rear end of the reset spring acts on the upper shell. The reset spring is a compression spring.

[0015] As a preferred embodiment, the upper and lower ends of the unlocking arm extend towards the corresponding upper and lower sidewalls with limiting guide pieces. Correspondingly, the upper and lower sidewalls are provided with front-to-back extending limiting guide grooves. The left-to-right cross-section of the limiting guide groove is L-shaped, and the limiting guide piece is an L-shaped bent piece. The front-to-back extension length of the limiting guide groove is greater than the front-to-back length of the limiting guide piece.

[0016] As a preferred embodiment, the U-shaped rivet is spaced apart from the pull strap, and the U-shaped rivet is clamped between the upper shell and the lower shell near the cable end.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves the installation and positioning of the PCBA in the upper shell and prevents it from moving back and forth by setting the anti-foolproof limiting post and the limiting slot. The upper and lower ends of the PCBA are respectively restricted by the upper shell and the lower shell to prevent up and down shaking. In addition, the upper and lower through holes of the upper shell and the lower shell are set, and the rivets are used to pass through and be riveted for positioning, which plays a role in assembly guidance and fixation. Furthermore, the U-shaped rivet clamps the upper shell and the lower shell to further improve the assembly stability.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of an improved and reliable optical communication module according to an embodiment of the present invention (with a PVC antistatic cap on). Figure 2This is a three-dimensional view of an improved and reliable optical communication module according to an embodiment of the present invention (with the PVC anti-static cap removed); Figure 3 This is a perspective view of a PVC antistatic cap according to an embodiment of the present utility model; Figure 4 This is an exploded view of an embodiment of the optical communication module for improving stability and reliability according to this utility model; Figure 5 This is another exploded view of an embodiment of the optical communication module for improving stability and reliability according to this utility model; Figure 6 This is a bottom view (lower shell not shown) of an improved stable and reliable optical communication module according to an embodiment of the present invention. Figure 7 This is a perspective view of the upper shell according to an embodiment of the present utility model; Figure 8 This is an exploded view of the pull strap according to an embodiment of the present invention; Figure 9 This is a cross-sectional view of an improved and reliable optical communication module according to an embodiment of the present invention; Figure 10 This is another cross-sectional view of an embodiment of the optical communication module for improving stability and reliability according to this utility model; Figure 11 This is a partial structural diagram of an embodiment of the present invention for improving the stability and reliability of an optical communication module plug-in application. Detailed Implementation

[0020] Please refer to Figures 1 to 11 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] An optical communication module with improved stability and reliability includes: an upper shell, an optical communication module body, a lower shell, a pull strap, rivets, and U-shaped rivet clips. The front end of the optical communication module 100 serves as the interface end, and the rear end serves as the cable end. An anti-static cap 200, such as a PVC anti-static cap, is provided on the pull-out cover of the interface end. It is a rectangular sleeve shape with one open end. Several protruding ribs 202 are provided on the inner wall of its inner cavity 201 to improve the secure fit between the anti-static cap 200 and the interface end, preventing it from loosening without external force.

[0023] The upper shell 10 is preferably a metal part, such as a zinc alloy die casting, which includes a top wall and two upper side walls connected to the left and right sides of the top wall. The top wall and the two upper side walls form an upper cavity 1. A foolproof limiting post is provided in the upper cavity 1. The top wall is provided with an upper through hole 15, which penetrates the upper and lower surfaces of the top wall. The main body 30 of the optical communication module includes a PCBA 31 and cables connected to the PCBA; specifically, the cables are configured with bare cables 32 (referring to cables that have not undergone further processing and are in their original state), shielded braided tubes 33, conductive tape 34, and braided protective sleeves 35. The PCBA31 has a limiting slot on its side. The optical communication module body 30 is placed and positioned in the upper cavity 1. The anti-foolproof limiting post is inserted into the corresponding slot to prevent the PCBA31 from moving back and forth. In this embodiment, there are two anti-foolproof limiting posts, which are respectively set on the inner side of the two upper side walls. One is a circular limiting post 12 and the other is a square limiting post 11. Correspondingly, there are two limiting slots, which are respectively set on the left and right sides of the PCBA31. One is a circular slot 312 and the other is a square slot 311, so as to play the role of anti-foolproof limiting. The anti-foolproof limiting post is shaped and adapted to the size of the corresponding limiting slot to play the role of fitting and positioning, thus restricting the PCBA31 in the left-right and front-back directions. Furthermore, an interference point A is protruded on the inner surface of the upper sidewall. When the PCBA31 is installed into the upper cavity 1, the left and right sides of the PCBA31 are tightly engaged and positioned with the corresponding interference point A, further preventing the PCBA31 from shaking or tilting. The lower shell is fitted downwards to the upper shell 10. The upper shell 10 and the lower shell are interlocked. For example, the inner surface of the upper sidewall is recessed with a groove 18, and the outer surface of the lower sidewall is protruded with a matching protrusion 24. The lower shell is snapped into the upper shell 10, and the lower sidewall extends into the inner side of the upper sidewall. The protrusion 24 is inserted into the corresponding groove 18, so that the upper and lower ends of the PCBA31 are restricted by the upper shell 10 and the lower shell, respectively, to prevent the PCBA31 from shaking. Specifically, the bottom surface of the top wall and the top surface of the bottom wall are both provided with pads 13. The pads 13 support the corresponding top and bottom surfaces of the PCBA31 to prevent the PCBA31 from shaking. At the same time, gaps are maintained between the upper and lower sides of the PCBA31 and the upper shell 10 and the lower shell. The gap size can be set according to product requirements. Multiple spacers are provided. Spacer 13 is located together with interference point A, which is positioned above spacer 13. The lower end of interference point 13 is integrally connected to the upper surface of spacer 13, which facilitates the improvement of the structural strength of interference point A and makes it easier to form. Another spacer 14 is integrally formed with square limiting post 11. Spacer 14 is integrally connected to the front and rear ends of square limiting post 11. This cluster design, compared with the individual design, is beneficial for strengthening the structural strength and is easier to form.

[0024] The lower shell 20 is preferably a metal part, such as a zinc alloy die casting, which includes a bottom wall and two lower side walls connected to the left and right sides of the bottom wall. The bottom wall and the two lower side walls form a lower cavity 2. The bottom wall is provided with a lower through hole 21, which penetrates the upper and lower surfaces of the bottom wall. The pull strap 40 includes a pull ring portion 42 and two unlocking arms 41 spaced apart on the left and right sides and connected to the front end of the pull ring portion 42. The pull strap 40 is made in two parts: one is an injection molded part (e.g., PA reinforced material), and the other is a metal part (e.g., stainless steel). The pull ring portion 42 is an injection molded part, and the two unlocking arms 41 are metal parts, which are integral metal parts. The rear ends of the two unlocking arms 41 are connected as one piece by a transverse connecting flap. An embedded part 414 extends rearward from the rear end of the two unlocking arms 41. The embedded part 414 is provided with a glue hole and notches located above and below the glue hole to improve the bonding firmness between the embedded part 414 and the injection molded part. Correspondingly, the injection molded part has connecting arms extending upward on the left and right sides of the front end of the pull ring portion 42, which are used to wrap and position the embedded part 414 during injection molding. The unlocking arm 41 is disposed on the lower shell 20. A return spring 50 (e.g., a stainless steel spring) is disposed between the pull strap 40 and the lower shell 20, with one spring corresponding to each of the two unlocking arms 41. When the pull ring 42 is pulled, the unlocking arm 41 moves backward relative to the lower sidewall to unlock. After the pull ring 42 is released, the pull strap 40 returns to its original position under the reset action of the return spring 50. The unlocking arm 41 is provided with a convex arc-shaped unlocking part 102 and a spring action part 411. The convex arc-shaped unlocking part 102 is located in front of the spring action part 411. The front end of the return spring 50 acts on the spring action part 411, and the rear end of the return spring 50 acts on the upper shell 10. The return spring 50 is a compression spring. A locking recess 101 is reserved behind the convex arc-shaped unlocking part 102 for the spring piece 300 of the adapter end of the interface end to lock into. The upper and lower ends of the unlocking arm 41 extend towards the corresponding upper and lower sidewalls with limiting guide plates 412. Correspondingly, both the upper and lower sidewalls are provided with front-to-back extending limiting guide grooves 16 and 23, respectively. Figure 9As shown, the left-right cross-section of the limiting guide groove is L-shaped (including a connected horizontal groove and a vertical groove, the vertical groove being concealed within the corresponding upper and lower side walls). The limiting guide piece 412 is an L-shaped bent piece (it includes a horizontal piece and a vertical piece; the horizontal piece is bent inwards along the left-right direction, and the vertical piece is bent inwards from the inner end of the horizontal piece along the up-down direction). The front-back extension length of the limiting guide groove is greater than the front-back length of the limiting guide piece 412, typically at least greater than the length of the limiting guide piece 412 by the pulling stroke distance. This L-shaped structural design, while providing front-back guiding and limiting, also improves the structural strength of the limiting guide piece due to the presence of the horizontal piece. Furthermore, the vertical piece is offset inwards and inserted into the vertical groove of the limiting guide groove, preventing damage to the limiting guide piece 412 from lateral pulling forces. If the limiting guide plate 412 is a conventional vertical plate, when the pull ring is pulled laterally or at an angle, a lateral force is generated on the limiting guide plate 412. This can easily cause the limiting guide plate 412 to detach from the limiting guide groove or deform, thus affecting the pulling and resetting in the front-to-back direction and affecting the normal use of the pull strap 40. Ideally, when pulling the pull strap 40, it should be pulled horizontally in the front-to-back direction, that is, pulled horizontally to the rear. In actual operation, it is difficult to achieve a strictly horizontal pulling in the front-to-back direction when manually pulling the pull ring. This is also the reason why the existing pull ring is prone to failure after repeated use, directly affecting the user experience and service life of the optical communication module.

[0025] The rivet 60 is a metal part, such as stainless steel, which passes through the upper through hole 15 and extends into the lower through hole 21 to be riveted to the top surface of the upper shell 10, so as to connect and position the upper shell 10 and the lower shell 20.

[0026] The U-shaped rivet 70 is a metal part, such as a stainless steel rivet, which clamps the upper shell 10 and the lower shell 20, and its two ends are riveted and bent to fasten to the top surface of the upper shell 10. The top surface of the upper shell 10 is designed with a stepped locking surface (including at least one convex surface and one concave surface, with the concave surface located inside the convex surface), so that the two ends of the U-shaped rivet 70 are riveted towards the top surface of the upper shell 10, and are tightly riveted along the stepped surface to prevent loosening. The U-shaped rivet 70 maintains a distance from the pull strap 40, and the U-shaped rivet 70 is clamped between the upper shell 10 and the lower shell 20 near the cable end. Here, the U-shaped rivet 70 is preferably made of stainless steel, whose thinner size provides greater clamping force. The U-shaped rivet 70 does not require additional space, saving tail space to accommodate more cables, and is easy to assemble.

[0027] In this embodiment, both the upper shell 10 and the lower shell 20 have two riveting through holes 17 and 22, respectively. The depth of the riveting through holes extends vertically. The U-shaped riveting piece 70 passes through the four riveting through holes and is riveted and fixed to form a clamping and positioning for the top wall, the bottom wall, the two upper side walls, and the two lower side walls. The projection of the depth direction of the riveting through hole 17 of the upper shell 10 is located on the outer side of the corresponding upper side wall, and the riveting through hole 22 of the lower shell 20 penetrates the lower side wall. A recessed groove 25 is provided on the bottom surface of the bottom wall of the lower shell 20 in the area between the two riveting through holes 22 for the U-shaped riveting piece 70 to be recessed and positioned. Correspondingly, a clearance groove 413 is also provided on the metal part of the pull strap 40 for the U-shaped riveting piece 70 to be recessed.

[0028] The key design feature of this utility model is that it achieves the insertion and positioning of PCBA31 within the upper shell 10 and prevents it from moving back and forth by setting anti-foolproof limiting posts and limiting slots. The upper and lower ends of PCBA31 are respectively restricted by the upper shell 10 and the lower shell 20 to prevent vertical shaking. Furthermore, the upper through hole 15 and lower through hole 21 of the upper shell 10 and the lower shell 20 are set, and the rivets 60 pass through and are riveted for positioning, which plays a role in assembly guidance and fixation. In addition, the U-shaped rivet clamping piece 70 clamps the upper shell 10 and the lower shell 20 to further improve the assembly stability.

[0029] Furthermore, the design of the unlocking structure effectively solves the problem in traditional technology where "when pulling the ring, it is difficult to achieve a strictly aligned front and back position when manually operating it. The tilted pulling direction will generate a lateral force, causing the left and right unlocking arms of the ring to deform left and right, which in turn leads to poor pulling or even loosening of the unlocking arms."

[0030] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An optical communication module for improving robustness and reliability, characterized in that, include: The upper shell includes a top wall and two upper side walls connected to the left and right sides of the top wall. The top wall and the two upper side walls form an upper cavity. A foolproof limiting post is provided in the upper cavity. The top wall is provided with an upper through hole. The optical communication module body includes a PCBA and cables connected to the PCBA; the side of the PCBA is provided with a limiting slot, the optical communication module body is placed and positioned in the upper cavity, and the foolproof limiting post is inserted into the corresponding slot to prevent the PCBA from moving back and forth; The lower shell includes a bottom wall and two lower side walls connected to the left and right sides of the bottom wall. The bottom wall and the two lower side walls form a lower cavity. The bottom wall is provided with a lower through hole. The pull strap includes a pull ring portion and two unlocking arms spaced apart on the left and right sides and connected to the front end of the pull ring portion; the unlocking arms are disposed on the lower shell, and a return spring is disposed between the pull strap and the lower shell; the lower shell is fitted downward to the upper shell, and the upper and lower ends of the PCBA are respectively restricted by the upper shell and the lower shell; Rivets, which pass through the upper through hole and the lower through hole and are riveted, are used to connect and position the upper shell and the lower shell. The U-shaped rivet clamps clamp the upper shell and the lower shell, and their two ends are riveted and bent.

2. The optical communication module for improving stability and reliability according to claim 1, characterized in that, Two anti-foolproof limiting posts are provided, which are respectively set on the inner side of the two upper side walls. One is a circular limiting post and the other is a square limiting post. Correspondingly, two limiting slots are provided, which are respectively set on the left and right sides of the PCBA. One is a circular slot and the other is a square slot.

3. The optical communication module for improving robustness and reliability according to claim 1, characterized in that, The bottom surface of the top wall and the top surface of the bottom wall are both provided with protruding pads, which support the corresponding top and bottom surfaces of the PCBA.

4. The optical communication module for improving robustness and reliability according to claim 1, characterized in that, The inner surface of the upper sidewall is provided with an interference point. The PCBA is installed into the upper cavity, and the left and right sides of the PCBA are tightly engaged and positioned with the corresponding interference points.

5. The optical communication module for improving robustness and reliability according to claim 1, characterized in that, The inner surface of the upper sidewall is recessed with a groove, and the outer surface of the lower sidewall is protruded with a matching protrusion. The lower shell is snapped onto the upper shell, the lower sidewall extends into the inner side of the upper sidewall, and the protrusion is engaged in the corresponding groove.

6. The optical communication module for improving robustness and reliability according to claim 1, characterized in that, Both the upper shell and the lower shell have two riveting holes. The depth of the riveting holes extends vertically. The U-shaped riveting piece passes through the four riveting holes and is riveted and fixed to form a clamping and positioning for the top wall, the bottom wall, the two upper side walls and the two lower side walls.

7. The optical communication module for improving robustness and reliability according to claim 6, characterized in that, The projection of the riveting through hole of the upper shell in the depth direction is located on the outer side of the corresponding upper sidewall, and the riveting through hole of the lower shell penetrates the lower sidewall.

8. The optical communication module for improving robustness and reliability according to claim 1, characterized in that, The unlocking arm is provided with a convex arc-shaped unlocking part and a spring action part. The convex arc-shaped unlocking part is located in front of the spring action part. The front end of the reset spring acts on the spring action part, and the rear end of the reset spring acts on the upper shell. The reset spring is a compression spring.

9. The optical communication module for improving robustness and reliability according to claim 1, characterized in that, The upper and lower ends of the unlocking arm extend towards the corresponding upper and lower side walls with limiting guide pieces. Correspondingly, the upper and lower side walls are provided with front-to-back extending limiting guide grooves. The left-to-right cross-section of the limiting guide groove is L-shaped, and the limiting guide piece is an L-shaped bent piece. The front-to-back extension length of the limiting guide groove is greater than the front-to-back length of the limiting guide piece.

10. The optical communication module for improving robustness and reliability according to claim 7, characterized in that, The U-shaped rivet plate maintains a distance from the pull strap, and the U-shaped rivet plate is clamped between the upper shell and the lower shell near the cable end.

Images