Rotary pull type unlocking structure of QSFP-DD optical module

Abstract

The invention relates to a QSFP-DD optical module rotary pull type unlocking structure, two side walls of a base are recessed inwards to form a connecting rod accommodating space, and the end parts of the two side walls of the base are continuously recessed inwards on the basis of the connecting rod accommodating space to form a pull ring accommodating space; the connecting rod is located in the connecting rod containing space and slidably connected with the base, one end of the connecting rod is provided with an unlocking protrusion, and the other end is provided with an oval groove. The pull ring is located in the pull ring containing space, a cylinder tangent to the oval groove is arranged on the outer side of the pull ring, and the inner side is rotationally connected with the base. In a locking state, the connecting arm is positioned on one side of the base in the height direction; the advantages are that the rotary pull ring design is adopted, and the pull ring, the connecting rod and other related unlocking structures are located in the edge of the module structure, so that the unlocking mechanism does not affect the plugging and unplugging of the optical fiber patch cord; the mounting structure of the spring enables the spring to be easily put in, so that the assembly efficiency is improved; the yield can be greatly improved, manpower is reduced, large-scale mass production is achieved, precision is high, and the requirements proposed by an application party are met.

Description

Technical Field

[0001] The present invention relates to the field of optical communications, and in particular to a rotary-pull unlocking structure for a QSFP-DD optical module. Background Art

[0002] like Figure 1 and Figure 2 The figure shows the appearance structure of the QSFP-DD optical module, which includes a base and an upper cover. Connecting rods are set on both sides of the base, and a straight-pull pull ring is set at one end of the base. The pull ring and the connecting rod are integrally formed. An unlocking protrusion is set on the connecting rod, and a reset spring is set between the connecting rod and the base. By pulling the pull ring, the pull rod moves as shown in the figure. Figure 3 The module is unlocked by moving the unlocking protrusion in the direction indicated by the arrow. Release the pull ring, and the reset spring forces the connecting rod to reset the unlocking protrusion. A similar structure is described in Patent 201520393482.1 - A QSFP+ Module Direct Pull Unlocking Structure.

[0003] For the appearance and structure design of QSFP-DD optical modules, general users have the following eight requirements:

[0004] 1. When locked, the pull ring cannot protrude from the edge of the structure, such as Figure 5 As shown;

[0005] 2. The pull ring should not affect the removal of the optical fiber patch cord;

[0006] 3. After the fiber optic patch cord is pulled out, the pull ring moves to drive the unlocking protrusion to unlock the module;

[0007] 4. The pull ring structure should be easy to assemble;

[0008] 5. The pull ring can be colored to distinguish different module types;

[0009] 6. The pull ring is easy to reset and will not be easily unlocked by unintentional operation;

[0010] 7. Relevant mechanism parts can be mass-produced with high precision;

[0011] 8. Relevant parts of the mechanism must meet the requirements of double 85, salt spray and other reliability verifications.

[0012] In response to the above requirements, the current unlocking structure of the QSFP-DD optical module has the following defects:

[0013] 1. A fiber optic patch cord is usually inserted under the straight pull ring, such as Figures 3 to 5 As shown in the figure, since the pull ring protrudes from the edge of the structure, it interferes with the optical fiber jumper. When the optical fiber jumper is removed, it will be affected by the pull ring, making it difficult to operate.

[0014] 2. The spring is used to reset the connecting rod. Its two ends need to be placed between the base and the connecting rod. Figure 2 As shown, the current design is to open a small hole on the top surface of the connection between the connecting rod and the pull ring, and the return spring is inserted into the small hole. The insertion process is relatively difficult, which affects the overall assembly efficiency.

[0015] Based on this, this case is brought forward. Summary of the Invention

[0016] The object of the present invention is to provide a QSFP-DD optical module rotary-pull unlocking structure to meet the requirements of the application party.

[0017] In order to achieve the above object, the technical solution of the present invention is as follows:

[0018] A QSFP-DD optical module rotary unlocking structure includes a base, a cover, a pull ring, and a connecting rod. The side walls of the base are recessed inward by a mm to form a connecting rod accommodating space. The ends of the side walls of the base are further recessed inward by b mm beyond the connecting rod accommodating space to form a pull ring accommodating space.

[0019] The connecting rod is located in the connecting rod accommodating space and is slidably connected to the base, so that the connecting rod can slide along the length direction of the base. One end of the connecting rod is provided with an unlocking protrusion, and the other end is provided with an elliptical groove arranged along the height direction of the base;

[0020] The pull ring is U-shaped and includes a connecting arm and rotating arms located on both sides of the connecting arm. The connecting arms on both sides are located in the pull ring accommodating space. The outer side of the connecting arm is provided with a cylinder located in and tangent to the elliptical groove, and the inner side is rotatably connected to the base.

[0021] When in the locked state, the connecting arm is located at one side in the height direction of the base; when in the unlocked state, the connecting arm is located at one end in the length direction of the base.

[0022] Furthermore, U-shaped grooves are provided on both side walls of the base end, and a circular shaft embedded in the U-shaped groove is provided on the inner side of the rotating arm, so that the pull ring can rotate around the axis of the circular shaft.

[0023] Furthermore, a groove is provided on the outer surface of the connecting arm, and a colored liquid is solidified in the groove.

[0024] Furthermore, the connecting rod is provided with a guide protrusion extending toward the bottom surface of the base, and the base is provided with a guide groove cooperating with the guide protrusion.

[0025] Furthermore, the connecting rod is provided with a second guide protrusion extending toward the cover plate side, and the cover plate is provided with a second guide groove cooperating with the second guide protrusion.

[0026] Furthermore, the side walls of both sides of the base are further recessed inward on the basis of the connecting rod accommodating space to form a limit space, and a limit block is provided in the limit space, and a clamping gap is left between the inner side of the limit block and the side wall of the base; the connecting rod is provided with an L-shaped hook, including a limit plate and a connecting plate, and the two ends of the connecting plate are respectively integrally formed with the limit plate and the connecting rod;

[0027] When locked, the limit plate is located in the clamping gap; when unlocked, the connecting rod slides along the length direction of the base to move the limit plate out of the clamping gap.

[0028] Furthermore, a return spring is provided in the limiting space and arranged along the length direction of the base. The two ends of the return spring respectively rest against the connecting plate and the wall of the limiting space. The return spring applies force to the connecting plate to assist the movement of the connecting rod, so that the limiting plate is pushed into the clamping gap.

[0029] Furthermore, an anti-scalding label is provided on the bottom surface of the base, and the anti-scalding label is formed by die-casting.

[0030] Furthermore, heat dissipation fins are provided on the bottom surface and / or cover plate of the base.

[0031] The advantages of the present invention are: a rotating pull ring design is adopted, and the associated unlocking structures such as the pull ring and connecting rod are located within the edge of the module structure, so that the unlocking mechanism will not affect the insertion and removal of the optical fiber jumper; the spring installation structure allows the spring to be easily inserted, thereby improving the efficiency of assembly; most of the processes of the module are manufactured through precision molds and mature equipment, which can greatly improve the yield and reduce manpower, so the production cost is low, it can be mass-produced with high precision, and meets the eight requirements put forward by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The figure is a schematic diagram of the appearance structure of the QSFP-DD optical module in the background technology;

[0033] Figure 2 for Figure 1 A cross-sectional schematic diagram;

[0034] Figure 3 This is a schematic diagram of the assembly of the QSFP-DD optical module and the optical fiber jumper in the background technology;

[0035] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure from another perspective;

[0036] Figure 5 for Figure 3 Schematic top view of

[0037] Figure 6 Schematic diagram of the appearance structure of the QSFP-DD optical module in the embodiment (the base is facing upward in the figure);

[0038] Figure 7 for Figure 6 Schematic top view of

[0039] Figure 8 Schematic diagram of the appearance structure of the QSFP-DD optical module in the embodiment (the cover is facing upward in the figure);

[0040] Figure 9 Schematic diagram of the three-dimensional assembly of the base, connecting rod and pull ring in the embodiment;

[0041] Figure 10 for Figure 9 Schematic top view of

[0042] Figure 11 Schematic diagram of the structure of the connecting rod in the embodiment;

[0043] Figure 12 Schematic diagram of the explosion of the connecting rod and the base in the embodiment;

[0044] Figure 13 Schematic diagram of the connecting rod accommodating space, the pull ring accommodating space, and the limiting space in the embodiment;

[0045] Figure 14 Schematic diagram of the explosion of the base and the cover in the embodiment.

[0046] Label Description

[0047] 1. Base; 101. Connecting rod accommodating space; 102. Pull ring accommodating space; 103. U-shaped groove; 104. Guide groove 1; 105. Limit space; 106. Limit block; 107. Snap-in gap; 2. Cover plate; 201. Guide groove 2; 3. Pull ring; 301. Connecting arm; 302. Rotating arm; 303. Cylinder; 304. Circular shaft; 305. Groove; 4. Connecting rod; 401. Unlocking protrusion; 402. Oval groove; 403. Guide protrusion 1; 404. Guide protrusion 2; 405. Hook; 4051. Connecting plate; 4052. Limit plate; 5. Reset spring; 6. Anti-scalding label; 7. Heat sink fin; 8. Fiber optic patch cord. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below with reference to the embodiments. It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like herein indicate directions or positional relationships based on the attached drawings. Figure 6 The coordinate system shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention.

[0049] This embodiment proposes a QSFP-DD optical module rotation-pull unlocking structure, such as Figures 6 to 14 As shown, it includes a base 1, a cover plate 2, a pull ring 3 and a connecting rod 4. Figure 13 As shown, the left and right sidewalls of the base 1 are recessed inward by a mm to form a connecting rod accommodating space 101. The front end portions of the left and right sidewalls of the base 1 are further recessed inward by b mm based on the connecting rod accommodating space 101 to form a pull ring accommodating space 102. The values ​​of a and b are determined based on the thickness of the die-casting. In this embodiment, a can be 1.0-1.2 mm, and b can be 1.0-1.2 mm. The connecting rod 4 is located within the connecting rod accommodating space 101 and is slidably connected to the base 1, allowing the connecting rod 4 to slide along the length of the base 1 (i.e., the front and back directions). The rear end of the connecting rod 4 is provided with an unlocking protrusion 401, and the front end is provided with an elliptical groove 402 arranged along the height direction of the base 1. The pull ring 3 is U-shaped, including a connecting arm 301 and a rotating arm 302 located on both sides of the connecting arm 301. The connecting arm 301 and the rotating arm 302 are formed as one piece. The connecting arms 301 on both sides are located in the pull ring accommodating space 102. The outer side of the connecting arm 301 is provided with a cylinder 303 located in the elliptical groove 402 and tangent to the elliptical groove 402, and the inner side is rotatably connected to the base 1.

[0050] By setting the connecting rod 4 accommodating space 101 and the pull ring accommodating space 102, the pull ring 3 is changed from a straight pull type to a rotary type, such as Figure 7 As shown, the unlocking structure associated with the pull ring 3, the connecting rod 4, etc. is located inside the edge of the module structure, so that the unlocking mechanism will not affect the insertion and removal of the optical fiber jumper 8. Figure 6 As shown, when in the locked state, the connecting arm 301 is located above the base 1, and the plugging and unplugging of the optical fiber jumper 8 will not interfere with the pull ring 3; after the jumper is pulled out, during the module unlocking process, the pull ring 3 is pulled to rotate, and the cylinder 303 pushes the connecting rod 4 forward through the elliptical groove 402 as the pull ring 3 rotates, driving the unlocking protrusion 401 to unlock. After the unlocking is completed, the connecting arm 301 of the pull ring 3 is located at the front end of the base 1.

[0051] refer to Figure 9 、 Figure 12 and Figure 13 The rotation connection structure between the pull ring 3 and the base 1 is as follows: a U-shaped groove 103 is provided on the side walls on both sides of the end of the base 1, and a circular shaft 304 embedded in the U-shaped groove 103 is provided on the inner side of the rotating arm 302, so that the pull ring 3 can rotate around the axis of the circular shaft 304.

[0052] refer to Figures 11 to 13The sliding connection structure between the connecting rod 4 and the base 1 is as follows: the connecting rod 4 is provided with a guide protrusion 403 extending toward the bottom side of the base 1, and the base 1 is provided with a guide groove 104 that cooperates with the guide protrusion 403. The cooperation between the guide groove 104 and the guide protrusion 403 is equivalent to the cooperation between the slide groove and the slider. The guide protrusion 403 is inserted into the guide groove 104 to achieve a sliding connection. As an option, the connecting rod 4 is also slidably connected to the cover plate 2. Figure 14 As shown, the connecting rod 4 is provided with a second guide protrusion 404 extending toward the side of the cover plate 2. The cover plate 2 is provided with a second guide groove 201 that cooperates with the second guide protrusion 404. The second guide protrusion 404 is inserted into the second guide groove 201 to achieve a sliding connection. By providing sliding connection structures with the base 1 and the cover plate 2 on the upper and lower sides of the connecting rod 4, the connecting rod 4 can move forward and backward while also preventing the connecting rod 4 from derailing, increasing structural stability. In addition, this structure is relatively easy to assemble.

[0053] In order to prevent the connecting rod 4 from turning outward, a hook structure is provided between the connecting rod 4 and the base 1 in this embodiment, which can be referred to Figure 10 、 Figure 11 and Figure 13 The side walls of the base 1 are further recessed inwardly based on the connecting rod accommodating space 101, forming a limiting space 105. A limiting block 106 is provided in the limiting space 105, and a snap-fitting gap 107 is left between the inner side of the limiting block 106 and the side wall of the base 1. The connecting rod 4 is provided with an L-shaped hook 405, which includes a limiting plate 4052 and a connecting plate 4051. The ends of the connecting plate 4051 are respectively integrally formed with the limiting plate 4052 and the connecting rod 4. When locked, the limiting plate 4052 is located in the snap-fitting gap 107 to prevent the connecting rod 4 from turning outward. When unlocked, the connecting rod 4 slides along the length of the base 1 (slides forward), causing the limiting plate 4052 to move out of the snap-fitting gap 107, thereby achieving the unlocked state.

[0054] refer to Figure 10 A return spring 5 is provided in the limiting space 105 along the length of the base 1. The two ends of the return spring 5 respectively press against the connecting plate 4051 and the wall of the limiting space 105. The return spring 5 applies force to the connecting plate 4051, assisting the movement of the connecting rod 4, so that the limiting plate 4052 is pushed into the engaging gap 107. On the one hand, the return spring 5 assists the return of the connecting rod 4; on the other hand, the spring applies a thrust to the hook 405, preventing the connecting rod 4 from being loosened by external forces, i.e., it is difficult to unlock the module. In addition, if Figure 4 or Figure 10 As shown, when the cover plate 2 is not installed, the limiting space 105 is an open space, and the reset spring 5 can be easily placed therein. There is no plugging operation in the prior art, which greatly improves the convenience of installing the reset spring 5.

[0055] In the prior art, such as Figure 1 As shown, the pull ring 3 is a composite structure of "plastic parts + sheet metal parts", in which the plastic part can be injection molded into different colors to distinguish different module types. This process is relatively expensive to produce. As an improvement, Figure 7 As shown, in this embodiment, a groove 305 is provided on the outer surface of the connecting arm 301. A colored liquid can be applied to the groove 305. Once the liquid solidifies, a color code is formed to distinguish between different module types and to facilitate color changes. This process is simple and quick, and the groove 305 can be formed during the die-casting of the pull ring 3.

[0056] This type of module generates a lot of heat when working, causing the surface of the module housing to be very hot. In the prior art, the application party requires the anti-scalding label 6 to be attached to remind the operator, but the sticky label is easy to fall off, especially when it is stuck on the surface of the high-temperature housing. If high-end glue is used, it will inevitably increase the manufacturer's cost. As an improvement, this embodiment forms the anti-scalding label 6 on the bottom surface of the base 1 through die-casting. On the one hand, it can prevent the label from falling off, and on the other hand, it eliminates the process of manual labeling, saving time and effort. As a preferred embodiment, this embodiment also provides heat dissipation fins 7 on the bottom surface of the base 1 and the cover plate 2. Figure 1 and Figure 3 The solution of only providing the heat dissipation fins 7 at the base 1 improves the heat dissipation effect.

[0057] The above embodiments are only used to illustrate the concept of the present invention, and are not intended to limit the protection of the present invention. Any non-substantial changes to the present invention using this concept should fall within the scope of protection of the present invention.

Claims

1. A QSFP-DD optical module rotary-pull unlocking structure, comprising a base, a cover, a pull ring, and a connecting rod, characterized in that: The side walls of the base are recessed inward by a mm to form a connecting rod accommodating space, and the ends of the side walls of the base are further recessed inward by b mm on the basis of the connecting rod accommodating space to form a pull ring accommodating space; The connecting rod is located in the connecting rod accommodating space and is slidably connected to the base, so that the connecting rod can slide along the length direction of the base. One end of the connecting rod is provided with an unlocking protrusion, and the other end is provided with an elliptical groove arranged along the height direction of the base; The pull ring is U-shaped and includes a connecting arm and rotating arms located on both sides of the connecting arm. The connecting arms on both sides are located in the pull ring accommodating space. The outer side of the connecting arm is provided with a cylinder located in and tangent to the elliptical groove, and the inner side is rotatably connected to the base. When in the locked state, the connecting arm is located at one side in the height direction of the base; when in the unlocked state, the connecting arm is located at one end in the length direction of the base.

2. The QSFP-DD optical module rotary unlocking structure according to claim 1, characterized in that: The side walls on both sides of the base end are provided with U-shaped grooves, and the inner side of the rotating arm is provided with a circular shaft embedded in the U-shaped groove, so that the pull ring can rotate around the axis of the circular shaft.

3. The QSFP-DD optical module rotary unlocking structure according to claim 1, wherein: A groove is provided on the outer surface of the connecting arm, and colored liquid is solidified in the groove.

4. The QSFP-DD optical module rotary unlocking structure according to claim 1, wherein: The connecting rod is provided with a guide protrusion extending toward the bottom surface of the base, and the base is provided with a guide groove matched with the guide protrusion.

5. The QSFP-DD optical module rotary unlocking structure according to claim 1, wherein: The connecting rod is provided with a second guide protrusion extending toward the cover plate side, and the cover plate is provided with a second guide groove matched with the second guide protrusion.

6. The QSFP-DD optical module rotary unlocking structure according to claim 1, wherein: The side walls of both sides of the base are further recessed inward on the basis of the connecting rod accommodating space to form a limit space, and a limit block is provided in the limit space, and a clamping gap is left between the inner side of the limit block and the side wall of the base; the connecting rod is provided with an L-shaped hook, including a limit plate and a connecting plate, and the two ends of the connecting plate are respectively integrally formed with the limit plate and the connecting rod; When locked, the limit plate is located in the clamping gap; when unlocked, the connecting rod slides along the length direction of the base to move the limit plate out of the clamping gap.

7. The QSFP-DD optical module rotary unlocking structure according to claim 6, characterized in that: A return spring is provided in the limit space and arranged along the length direction of the base. The two ends of the return spring respectively rest on the connecting plate and the wall surface of the limit space. The return spring applies force to the connecting plate to assist the movement of the connecting rod, so that the limit plate is pushed into the clamping gap.

8. The QSFP-DD optical module rotary unlocking structure according to claim 1, wherein: The bottom surface of the base is provided with an anti-scalding label, which is formed by die-casting.

9. The QSFP-DD optical module rotary unlocking structure according to claim 1, wherein: The bottom surface and / or the cover plate of the base are provided with heat dissipation fins.

Images