Housing structure for QSFP packaged optical module

Abstract

The utility model relates to a shell structural member for QSFP package optical module, including casing, upper cover, unlocking pull ring and return spring, the unlocking pull ring includes unlocking lever, the both sides of casing are set up vertical guide slot, and the both sides of casing are set up horizontal accommodating groove in the top of vertical guide slot, and horizontal accommodating groove communicates with vertical guide slot, unlocking lever is set up guide piece and the hole in on, and guide piece can slide in vertical guide slot, and through vertical guide slot and slide into horizontal accommodating groove, and return spring passes through hole and enters horizontal accommodating groove, and the both ends of return spring respectively rest on guide piece and the lateral wall of horizontal accommodating groove, the advantage lies in: can directly install or replace unlocking pull ring from outside without disassembling entire optical module, avoided the risk that must remove module, possibly damaged internal PCB chip, fin and other sensitive elements because of replacing pull ring in traditional design, shortened the time of maintenance and rework, effectively reduced the artificial cost of production and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of optical communication equipment, and in particular to a housing structure for QSFP packaged optical modules. Background Technology

[0002] With the rapid development of technologies such as artificial intelligence, big data, and cloud computing, high-speed optical communication modules are increasingly widely used in data centers and communication networks, placing higher demands on the performance, reliability, and production efficiency of optical modules. QSFP (Quad Small Form-factor Pluggable) series optical modules, due to their advantages such as high density and high-speed transmission, have become one of the mainstream pluggable optical module packaging forms.

[0003] In the structural design of QSFP optical modules, the unlocking mechanism is a key component for enabling hot-swapping of the module. For example... Figure 1 and Figure 2 The diagram shows a 3D assembly drawing and exploded view of an existing QSFP optical module, including a housing, a top cover, an unlocking pull ring, and a return spring. The unlocking pull ring includes a pull ring body, an unlocking lever, and an unlocking protrusion. One end of the unlocking lever is fixed to the pull ring body, and the other end has the unlocking protrusion. When the optical module is installed in a server, pulling the pull ring body horizontally causes the unlocking protrusion to move horizontally via the unlocking lever, thereby unlocking the module and allowing it to be removed from the server. When the pull ring body is released, the unlocking protrusion returns to its original position under the action of the return spring.

[0004] However, the aforementioned unlocking components have defects, such as... Figure 3 As shown, in the current structure, the installation steps for the unlocking component are as follows: with the housing and top cover not installed, the unlocking pull ring is installed onto the housing, then the spring is inserted, and the cover is secured. It is clear from these steps that the housing and top cover need to be disassembled to install the unlocking pull ring, and conversely, replacing the unlocking pull ring also requires disassembling the housing and cover. This process is not only time-consuming and labor-intensive, increasing labor costs, but also carries the risk of damaging sensitive internal components (such as PCB boards, optical components, heat sinks, etc.), severely impacting the module's maintainability and production yield.

[0005] Furthermore, single-mode optical modules with speeds of 100G and above typically employ LC optical interfaces compliant with IEC standards, requiring extremely high optical coupling accuracy. In existing designs, such as... Figure 2As shown, the optical port and electrical port front end are often integrated into the same board, forming an integrated front end structure. This design relies on the machining accuracy of the mold to ensure the position of the optical port, and lacks a compensation mechanism for assembly tolerances. During fiber insertion / removal or long-term reliability testing, external forces can easily be transmitted through the fiber to the ferrule, causing a slight offset of the optical port end face, which in turn leads to optical performance degradation problems such as increased insertion loss and deteriorated return loss, affecting the overall reliability of the module.

[0006] Therefore, this case is brought. Utility Model Content

[0007] The purpose of this invention is to provide a housing structure for QSFP packaged optical modules, which enables convenient replacement of the pull ring without disassembling the module, while effectively absorbing the mechanical stress of the optical port during use, thereby improving the maintainability and optical performance stability of the module.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows: A housing structure for a QSFP packaged optical module includes a housing, a top cover, an unlocking pull ring, and a reset spring. The unlocking pull ring includes a pull ring body, an unlocking rod, and an unlocking protrusion. The two ends of the unlocking rod are respectively fixed to the pull ring body and the unlocking protrusion. Vertical guide grooves are provided on both sides of the housing, and horizontal receiving grooves are provided on both sides of the housing above the vertical guide grooves. The horizontal receiving grooves are connected to the vertical guide grooves. The unlocking rod is provided with a guide plate and a plug hole. The guide plate can slide in the vertical guide groove and slide into the horizontal receiving groove through the vertical guide groove. The reset spring enters the horizontal receiving groove through the plug hole, and the two ends of the reset spring abut against the side wall of the guide plate and the side wall of the horizontal receiving groove, respectively.

[0009] Furthermore, the upper part of the vertical guide groove is a straight groove section, and the lower part is a trumpet-shaped section with one side wall inclined, so that the vertical guide groove as a whole has a structure that is wider at the bottom and narrower at the top.

[0010] Furthermore, the width of the straight section of the vertical guide groove is between 0.7 and 0.9 mm.

[0011] Furthermore, in the vertical guide groove horn-shaped section, the inclination angle of the inclined sidewall is between 8° and 12°.

[0012] Furthermore, the housing includes a plate and an optical port, which are bonded and fixed together by elastic adhesive.

[0013] Furthermore, the elastic adhesive is made of black glue.

[0014] The advantages of this utility model are: 1. The unlocking ring can be installed or replaced directly from the outside without disassembling the entire optical module (without opening the housing and top cover). This avoids the risks of having to remove the module to replace the ring, which may damage sensitive components such as internal PCB chips and heat sinks, as required by traditional designs. This significantly shortens the repair and rework time, reduces manpower and operating hours, and effectively reduces the labor costs of production and maintenance. 2. The optical port, which was originally integrally molded on the housing, is separated and fixed to the housing with black adhesive. Since black adhesive is an adhesive material with a certain degree of elasticity and toughness, it can act like a "shock absorber" to effectively absorb and disperse the mechanical stress transmitted from the optical fiber, preventing these forces from directly impacting the fragile optical devices or causing the optical path to deviate. This protects the internal optical coupling structure, reduces the risk of early failure caused by stress, and improves the long-term stability and production yield of the product. Attached Figure Description

[0015] Figure 1 This is a three-dimensional assembly diagram of a QSFP optical module in the background technology; Figure 2 for Figure 1 An explosion diagram; Figure 3 for Figure 1 A schematic diagram of the assembly process; Figure 4 This is a three-dimensional assembly diagram of the QSFP optical module in the embodiment; Figure 5 for Figure 4 An explosion diagram; Figure 6 This is a three-dimensional structural diagram of the shell in the embodiment; Figure 7 for Figure 6 Front view diagram; Figure 8 This is a schematic diagram of the unlocking pull ring in the embodiment; Figure 9 for Figure 4 A schematic diagram of the assembly process; Figure 10 This is a schematic diagram illustrating the independent design of the optical port in this embodiment; Label Explanation 1. Housing; 101. Plate; 102. Optical port; 103. Electrical port; 104. Vertical guide groove; 105. Horizontal receiving groove; 2. Top cover; 3. Unlocking pull ring; 301. Pull ring body; 302. Unlocking rod; 303. Unlocking protrusion; 304. Guide plate; 305. Plug hole; 4. Return spring. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to embodiments. It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer" used in this document indicate the orientation or positional relationship based on the attached embodiments. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] This embodiment proposes a housing structure for QSFP packaged optical modules, such as... Figures 4 to 8 As shown, the device includes a housing 1, a top cover 2, an unlocking pull ring 3, and a return spring 4. The unlocking pull ring 3 includes a pull ring body 301, an unlocking rod 302, and an unlocking protrusion 303. The two ends of the unlocking rod 302 are fixed to the pull ring body 301 and the unlocking protrusion 303, respectively. Vertical guide grooves 104 are provided on both sides of the housing 1. Horizontal receiving grooves 105 are provided on both sides of the housing 1 above the vertical guide grooves 104, and the horizontal receiving grooves 105 communicate with the vertical guide grooves 104. The unlocking rod 302 is provided with a guide piece 304 and a plug hole 305. The guide piece 304 can slide in the vertical guide groove 104 and slide into the horizontal receiving groove 105 through the vertical guide groove 104. The return spring 4 enters the horizontal receiving groove 105 through the plug hole 305, and the two ends of the return spring 4 abut against the side wall of the guide piece 304 and the horizontal receiving groove 105, respectively.

[0018] refer to Figure 9 The installation process of the outer shell structure in this embodiment is as follows: Place the unlocking pull ring 3 under the shell 1 (the shell 1 and the upper cover 2 have been installed and fixed). At this time, the guide plate 304 on the unlocking rod 302 is aligned with the vertical guide groove 104. Since the unlocking rod 302 is a sheet metal part, it has a certain elasticity. Slightly pry the two unlocking rods 302 outward (same as the prior art, the distance between the two unlocking rods is equal to or slightly less than the width of the shell). Move the unlocking pull ring 3 upward so that the guide plate 304 enters the vertical guide groove 104. At this time, release the unlocking rod 302. The two unlocking rods 302 spring back to the sheet metal. Under the action of the force, the release spring 4 is reset and clamped to the side wall of the housing 1; continue to move the release ring 3 upward, so that the guide plate 304 moves upward along the vertical guide groove 104 until it enters the horizontal receiving groove 105. Move the release ring 3 backward, so that the guide plate 304 reaches the rear side wall of the horizontal receiving groove 105. At this time, the plug hole 305 on the release rod 302 is directly opposite the horizontal receiving groove 105. Insert the release spring 4 into the horizontal receiving groove 105 through the plug hole 305, so that the front end of the spring abuts against the front side wall of the horizontal receiving groove 105 and the rear end of the spring abuts against the guide plate 304, thus completing the installation.

[0019] The disassembly process of the unlocking pull ring 3 is as follows: Pull the unlocking pull ring 3 forward so that the guide plate 304 moves in the horizontal receiving groove 105 until it reaches the top of the vertical guide groove 104. At this time, move the unlocking pull ring 3 down and the unlocking rod 302 moves down so that the guide plate 304 enters the vertical guide groove 104. Continue to move the unlocking pull ring 3 down until the guide plate 304 slides out of the vertical guide groove 104. Retract the reset spring 4 to complete the disassembly. (When disassembling, you can first use a tool, such as a hook, to hook out the reset spring 4 before disassembling the unlocking pull ring 3. This can avoid the resistance of the reset spring 4 and make disassembly more convenient.)

[0020] Through the above structural design, the unlocking pull ring 3 can be installed or replaced directly from the outside without disassembling the entire optical module (without opening the housing 1 and the top cover 2). This avoids the risks of having to remove the module to replace the pull ring, which may damage sensitive components such as internal PCB chips and heat sinks, as required by traditional designs. It significantly shortens the time for maintenance and rework, reduces manpower input and operating hours, and effectively reduces the labor costs of production and maintenance.

[0021] To facilitate the guide plate 304's entry into the vertical guide groove 104 from bottom to top, the upper part of the vertical guide groove 104 in this embodiment is a straight groove section, and the lower part is a flared section with one side wall inclined, giving the vertical guide groove 104 an overall structure that is wider at the bottom and narrower at the top. Figure 7 As shown, in this preferred embodiment, the width b of the straight section of the vertical guide groove 104 is 0.8 mm, and the inclination angle x of the inclined sidewall in the horn-shaped section of the vertical guide groove 104 is 10°.

[0022] like Figure 10 As shown, the housing 1 in this embodiment includes an optical port 102, a plate 101, and an electrical port 103. The optical port 102 and the plate 101 are designed to be independently separate, while the plate 101 and the electrical port 103 are integrally formed. During installation, the optical port 102 is bonded to the front end of the plate 101 using black adhesive, and then cured by baking. Since black adhesive is an adhesive material with a certain degree of elasticity and toughness, it can effectively absorb and disperse the mechanical stress transmitted from the optical fiber, like a "shock-absorbing pad," preventing these forces from directly impacting the fragile optical devices or causing optical path deviation. This protects the internal optical coupling structure, reduces the risk of early failure due to stress, and improves the long-term stability and production yield of the product.

[0023] The above embodiments are only used to explain the concept of this utility model, and are not intended to limit the protection of this utility model. Any non-substantial modifications made to this utility model using this concept should fall within the protection scope of this utility model.

Claims

1. A housing structure for a QSFP packaged optical module, comprising a housing, a top cover, an unlocking pull ring, and a reset spring, wherein the unlocking pull ring comprises a pull ring body, an unlocking rod, and an unlocking protrusion, and the two ends of the unlocking rod are respectively fixed to the pull ring body and the unlocking protrusion; characterized in that: Vertical guide grooves are provided on both sides of the housing, and horizontal receiving grooves are provided on both sides of the housing above the vertical guide grooves. The horizontal receiving grooves are connected to the vertical guide grooves. The unlocking rod is provided with a guide plate and a plug hole. The guide plate can slide in the vertical guide groove and slide into the horizontal receiving groove through the vertical guide groove. The reset spring enters the horizontal receiving groove through the plug hole, and the two ends of the reset spring abut against the side wall of the guide plate and the side wall of the horizontal receiving groove, respectively.

2. The housing structure for a QSFP packaged optical module as described in claim 1, characterized in that, The upper part of the vertical guide channel is a straight channel section, and the lower part is a trumpet-shaped section with one side wall inclined, so that the vertical guide channel has an overall structure that is wider at the bottom and narrower at the top.

3. A housing structure for a QSFP packaged optical module as described in claim 2, characterized in that, The width of the straight section of the vertical guide groove is between 0.7 and 0.9 mm.

4. A housing structure for a QSFP packaged optical module as described in claim 2, characterized in that, In the vertical guide groove horn-shaped section, the inclination angle of the inclined sidewall is between 8° and 12°.

5. A housing structure for a QSFP packaged optical module as described in claim 1, characterized in that, The housing includes a plate and an optical port, which are bonded and fixed together by elastic adhesive.

6. A housing structure for a QSFP packaged optical module as described in claim 5, characterized in that, The elastic adhesive is made of black glue.

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