QSFPDD optical module structure

Abstract

The utility model discloses a QSFPDD optical module structure. The QSFPDD optical module structure comprises a shell, an insulating block, a circuit board and a wire rod, a plurality of welding ends are formed by embedding the front end of the wire rod into the insulating block and forwards extending out of the insulating block; a plurality of welding ends are matched to be welded and conducted with the upper surface and the lower surface of the circuit board respectively, and every two adjacent welding ends are arranged in a front-back staggered mode; according to the utility model, the distance between the two adjacent welding ends is increased in a front-and-back staggered manner, so that the situation of signal crosstalk between the two adjacent welding ends is avoided, additional shielding sheets are not needed, the overall structure is simplified, the assembly process is more convenient, and the overall processing cost is effectively reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the field technology of QSFPDD optical modules, in particular to a QSFPDD optical module structure. Background Art

[0002] QSFP offers a fiber optic solution with superior speed and density compared to the 4-lane CX4 interface. By supporting four channels of data transmission at 10 Gbps per channel within the same port footprint as XFP, QSFP offers four times the density of XFP products and three times that of SFP+ products. The 4-channel QSFP interface, with its higher density than the CX4, has been adopted by the InfiniBand standard. This 4-channel pluggable interface achieves a transmission rate of 40 Gbps. Many of the proven key technologies of XFP have been incorporated into this design.

[0003] The welding points in the existing QSFPDD optical module are distributed on the upper and lower surfaces of the circuit board, with 6 high-speed signal points on each surface and 4 high-speed signal points in the front of the upper layer. Due to the limited internal space, the spacing between the high-speed signal points is small, which makes signal crosstalk prone to occur. Therefore, additional metal sheets are required for signal shielding. Not only is the structure more complicated and the assembly process difficult, but the overall cost is also high. Therefore, it is necessary to further improve the existing QSFPDD optical module structure. Utility Model Content

[0004] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a QSFPDD optical module structure, which can effectively solve the problems of the existing QSFPDD optical module, such as complex structure, difficult assembly process and high cost.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A QSFPDD optical module structure includes a shell, an insulating block, a circuit board and wires; the shell is provided with an installation cavity that passes through the front and rear end surfaces of the shell, and the rear end side wall of the installation cavity is integrally recessed with a limiting groove; the insulating block is arranged in the installation cavity, and the rear side wall of the insulating block abuts against the rear end surface of the limiting groove; the circuit board is arranged in the installation cavity and is located at the front end of the insulating block; the wires are arranged in multiple ways, and the front end of the wires is embedded in the insulating block and extends forward from the insulating block to form multiple welding ends; the multiple welding ends are respectively welded to the upper and lower surfaces of the circuit board, and each two adjacent welding ends are staggered front and back, and the rear end of the wires extends backward from the insulating block and the shell.

[0007] As a preferred solution, the shell includes a detachable base and an upper cover, and the base and the upper cover form the aforementioned installation cavity.

[0008] As a preferred solution, a first fixing hole is provided on the base, and a second fixing hole is provided on the upper cover to match the first fixing hole. A fixing bolt passes through the first fixing hole and the second fixing hole in sequence to fix the upper cover and the base together.

[0009] As a preferred solution, the two side walls of the base are recessed with a slide groove extending forward and backward, the front end of the slide groove is recessed with a first movable groove extending forward and backward, the side wall of the rear end of the slide groove is recessed with a mounting groove, the upper cover is recessed with a second movable groove corresponding to the first movable groove, and the second movable groove is connected to the slide groove; the shell also includes a pull ring and a spring, the pull ring includes a main body extending forward and backward and a hand-pull part extending backward at the rear end of the main body; the main body is located in the slide groove, the front end of the main body is protruding outward with a movable part that cooperates with the first movable groove and the second movable groove, the rear end of the main body is bent inward to form a reset part, the reset part extends inward into the mounting groove, the spring is arranged in the mounting groove, and the two ends of the spring respectively rest on the reset part and the side walls of the mounting groove and prompt the main body to reset forward.

[0010] As a preferred solution, the front end of the base is provided with a positioning groove with a rear end opening, the front end of the upper cover is provided with a positioning part protruding forward and cooperating with the positioning groove, and the front end surface of the movable part rests on the side wall of the second movable groove and prompts the upper cover to move forward.

[0011] As a preferred solution, the side walls of the installation cavity are provided with outwardly protruding positioning protrusions, and both sides of the circuit board are provided with inwardly concave positioning grooves that cooperate with the positioning protrusions.

[0012] As a preferred solution, the inner side wall of the installation cavity is provided with a convex strip protruding outward; the outer layer of the part of the wire extending backward from the insulating block is covered with a braided layer, and multiple wires are covered with a copper foil layer that fits the braided layer, and the copper foil layer is in contact with the convex strip and is conductive.

[0013] As a preferred solution, the copper foil layer is covered with a protective layer, which is formed on the outer periphery of the copper foil layer by heat shrinkage, and the front end of the copper foil layer extends forward from the protective layer.

[0014] As a preferred solution, the soldering ends on one surface of the circuit board are arranged in two rows spaced apart from each other, and two adjacent soldering ends in the rear row are staggered from front to back.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0016] The front end of the wire is embedded in the insulating block and extends forward from the insulating block to form a plurality of welding ends; and the plurality of welding ends are respectively welded and connected to the upper and lower surfaces of the circuit board, and each two adjacent welding ends are staggered front and back; the distance between the two adjacent welding ends is increased by staggering the front and back, thereby avoiding signal crosstalk between the two adjacent welding ends, and there is no need to add additional shielding sheets. This not only simplifies the overall structure and makes the assembly process more convenient, but also effectively reduces the overall processing cost.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the exploded state of a preferred embodiment of the present utility model;

[0020] Figure 3 This is a partial assembly diagram of a preferred embodiment of the present utility model;

[0021] Figure 4 This is another partial assembly diagram of a preferred embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper cover in a preferred embodiment of the present utility model.

[0023] Description of the accompanying drawings:

[0024] 10. Housing 101, mounting cavity

[0025] 102, limiting groove 103, first fixing hole

[0026] 104, second fixing hole 105, sliding groove

[0027] 106, first movable slot 107, mounting slot

[0028] 108. Second movable groove 109. Positioning groove

[0029] 11. Base 12. Top cover

[0030] 121, positioning portion 13, fixing bolt

[0031] 14. Pull ring 141. Body

[0032] 142. Hand-pull part 143. Movable part

[0033] 144, reset portion 15, spring

[0034] 16. Positioning convex part 17. convex strip

[0035] 20. Insulation block 30. Circuit board

[0036] 301, positioning groove 40, wire

[0037] 41. Welding end 42. Braided layer

[0038] 43. Copper foil layer 44. Protective layer. DETAILED DESCRIPTION

[0039] Please refer to Figures 1 to 5 As shown, it shows the specific structure of a preferred embodiment of the present invention, which includes a housing 10, an insulating block 20, a circuit board 30 and a wire 40.

[0040] The housing 10 has an installation cavity 101 extending through the front and rear ends of the housing 10. The rear end sidewall of the installation cavity 101 is integrally provided with a retaining groove 102. In this embodiment, the housing 10 includes a detachable base 11 and a top cover 12. The base 11 and top cover 12 enclose the aforementioned installation cavity 101. The detachable structure facilitates the installation process of the overall structure. The base 10 is provided with a first fixing hole 103, and the top cover 12 is provided with a second fixing hole 104 that cooperates with the first fixing hole 103. A fixing bolt 13 passes through the first fixing hole 103 and the second fixing hole 104 in sequence to securely mount the top cover 12 and the base 11 together. The sidewalls of the installation cavity 101 are provided with a positioning protrusion 16 protruding outward. The inner sidewalls of the installation cavity 101 are provided with a ridge 17 protruding outward.

[0041] The two side walls of the base 11 are recessed with a slide groove 105 extending forward and backward, the front end of the slide groove 105 is recessed with a first movable groove 106 extending forward and backward, the side wall of the rear end of the slide groove 105 is recessed with a mounting groove 107, and the upper cover 12 is recessed with a second movable groove 108 corresponding to the first movable groove 106, and the second movable groove 108 is connected to the slide groove 105; the shell 10 also includes a pull ring 14 and a spring 15, the pull ring 14 includes a body 141 extending forward and backward and a hand-pull portion extending backward at the rear end of the body 141 142, the hand-pull portion 142 is used to facilitate the user to pull the pull ring 14 backward; the main body 141 is located in the slide groove 105, and the front end of the main body 141 is protruding outward with a movable portion 143 that cooperates with the first movable groove 106 and the second movable groove 108, and the rear end of the main body 141 is bent inward to form a reset portion 144, and the reset portion 144 extends inward into the installation groove 107, and the spring 15 is arranged in the installation groove 107, and the two ends of the spring 15 respectively rest on the reset portion 144 and the side walls of the installation groove 107 and prompt the main body 141 to reset forward. The front end of the base 11 is provided with a positioning groove 109 with a rear end opening, and the front end of the upper cover 12 is provided with a positioning portion 121 protruding forward and cooperating with the positioning groove 109. The front end surface of the movable portion 143 abuts against the side wall of the second movable groove 108 and prompts the upper cover 12 to move forward, thereby driving the positioning portion 121 to move forward into the positioning groove 109, positioning the upper cover 12 and the base 11, thereby facilitating the subsequent fixed installation process between the upper cover 12 and the base 11.

[0042] The insulating block 20 is arranged in the installation cavity 101, and the rear side wall of the insulating block 20 abuts against the rear end surface of the limiting groove 102. The limiting groove 102 limits the insulating block 20 to prevent it from sliding backward when dragging, thereby ensuring the stability of the overall structure.

[0043] The circuit board 30 is arranged in the installation cavity 101 and is located at the front end of the insulating block 20; in this embodiment, positioning grooves 301 are recessed inward on both sides of the circuit board 30 to cooperate with the positioning protrusions 16. When the circuit board 30 is installed, the position of the circuit board 30 can be positioned and fixed by the cooperation between the positioning grooves 301 and the positioning protrusions 16.

[0044] The wires 40 are provided in multiple configurations. The front ends of the wires 40 are embedded in the insulating block 20 and extend forward from the insulating block 20, forming multiple soldering ends 41. These soldering ends 41 are soldered to the upper and lower surfaces of the circuit board 30 for electrical connection. Each pair of adjacent soldering ends 41 is staggered front to back, thereby increasing the distance between adjacent soldering ends 41 and preventing signal crosstalk. The rear ends of the wires 40 extend rearward from the insulating block 20 and the housing 10. In this embodiment, the portion of the wires 40 extending rearward from the insulating block 20 is coated with a braided layer 42. The wires 40 are then coated with a copper foil layer 43 that conforms to the braided layer 42. The copper foil layer 43 is in contact with the ridges 17 for electrical connection, thereby electrically connecting the housing 10 to the braided layer 42 and grounding the braided layer 42, enhancing the shielding effectiveness of the housing 10. The copper foil layer 43 is covered with a protective layer 44, which is formed around the outer periphery of the copper foil layer 43 by heat shrinking. The front end of the copper foil layer 43 extends forward from the protective layer 44 to prevent the protective layer 44 from affecting the contact and conductivity between the copper foil layer 43 and the protrusion 17. The soldering terminals 41 on one surface of the circuit board 30 are arranged in two rows with a front-to-back spacing. Adjacent soldering terminals 41 in the rear row are staggered.

[0045] The assembly process of this embodiment is described in detail as follows:

[0046] During assembly, first install the pull ring 14 into the base 11, and install the spring 15 into the installation groove 107 so that the pull ring 14 has an initial tension, then weld the welding end 41 and the circuit board 30 to make it conductive, and install the installed semi-finished product into the installation cavity 101. At this time, the rear side wall of the insulating block 20 is against the rear side wall of the limiting groove 102, and then cover the upper cover 12 on the base 11, and fix the upper cover 12 and the base 11 together by the fixing bolts 13, and make the convex strip 17 contact and conduct with the copper foil layer 43.

[0047] The design focus of the present invention is that: the front end of the wire is embedded in the insulating block and extends forward from the insulating block to form a plurality of welding ends; and the plurality of welding ends are respectively welded and connected to the upper and lower surfaces of the circuit board, and each two adjacent welding ends are staggered front and back; the distance between the two adjacent welding ends is increased by staggering the front and back, thereby avoiding signal crosstalk between the two adjacent welding ends, and there is no need to add additional shielding sheets. This not only simplifies the overall structure and makes the assembly process more convenient, but also effectively reduces the overall processing cost.

[0048] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A QSFPDD optical module structure, characterized by: It includes a shell, an insulating block, a circuit board and a wire; the shell has an installation cavity that runs through the front and rear end surfaces of the shell, and the rear end side wall of the installation cavity is integrally recessed with a limiting groove; the insulating block is arranged in the installation cavity, and the rear side wall of the insulating block abuts against the rear end surface of the limiting groove; the circuit board is arranged in the installation cavity and is located at the front end of the insulating block; the wire is arranged in multiple ways, and the front end of the wire is embedded in the insulating block and extends forward to form multiple welding ends of the insulating block; the multiple welding ends are respectively welded to the upper and lower surfaces of the circuit board, and each two adjacent welding ends are staggered front and back, and the rear end of the wire extends backward out of the insulating block and the shell.

2. The QSFPDD optical module structure according to claim 1, characterized in that: The shell includes a detachable base and an upper cover, and the base and the upper cover form the aforementioned installation cavity.

3. The QSFPDD optical module structure according to claim 2, characterized in that: The base is provided with a first fixing hole, the upper cover is provided with a second fixing hole that matches the first fixing hole, and a fixing bolt passes through the first fixing hole and the second fixing hole in sequence to fix the upper cover and the base together.

4. The QSFPDD optical module structure according to claim 2, characterized in that: The two side walls of the base are recessed with a slide groove extending forward and backward, the front end of the slide groove is recessed with a first movable groove extending forward and backward, the side wall of the rear end of the slide groove is recessed with a mounting groove, the upper cover is recessed with a second movable groove corresponding to the first movable groove, and the second movable groove is connected to the slide groove; the shell also includes a pull ring and a spring, the pull ring includes a main body extending forward and backward and a hand-pull part extending backward at the rear end of the main body; the main body is located in the slide groove, the front end of the main body is protruding outward with a movable part that cooperates with the first movable groove and the second movable groove, the rear end of the main body is bent inward to form a reset part, the reset part extends inwardly into the mounting groove, and the spring is arranged in the mounting groove, and the two ends of the spring respectively rest on the reset part and the side walls of the mounting groove and prompt the main body to reset forward.

5. The QSFPDD optical module structure according to claim 4, characterized in that: The front end of the base is provided with a positioning groove with a rear end opening, the front end of the upper cover is provided with a positioning portion protruding forward and cooperating with the positioning groove, and the front end surface of the movable portion abuts against the side wall of the second movable groove and prompts the upper cover to move forward.

6. The QSFPDD optical module structure according to claim 1, characterized in that: A positioning convex portion is protruded outwardly on the side wall of the installation cavity, and a positioning groove matched with the positioning convex portion is concavely formed inwardly on both sides of the circuit board.

7. The QSFPDD optical module structure according to claim 1, characterized in that: The inner side wall of the installation cavity is provided with a convex strip protruding outward; the outer layer of the part of the wire extending backward from the insulating block is covered with a braided layer, and multiple wires are covered with a copper foil layer that fits the braided layer, and the copper foil layer is in contact with the convex strip and is conductive.

8. The QSFPDD optical module structure according to claim 7, characterized in that: The copper foil layer is covered with a protective layer, which is formed on the outer periphery of the copper foil layer by heat shrinkage, and the front end of the copper foil layer extends forward from the protective layer.

9. The QSFPDD optical module structure according to claim 1, characterized in that: The soldering ends on one surface of the circuit board are arranged in two rows spaced apart from each other, and two adjacent soldering ends in the rear row are arranged in a staggered manner from front to back.

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