High-speed cable independent punching, welding and fixing structure and optical module
By employing an independent punching and welding fixing structure in the optical module, the signal line and ground line enter the compartment through the base limiting hole and are welded to form a shield. This solves the problem of increased impedance caused by adhesive dispensing in traditional optical modules, ensuring the performance and convenience of high-speed optical modules.
Patent Information
- Application Number
- CN202520152776.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In traditional optical modules, the signal and ground lines of high-speed cables are directly soldered onto the PCB board. During the UV adhesive curing process, impedance can easily increase, affecting the performance of high-speed optical modules, especially 800G and 1600G high-speed optical modules.
The high-speed cable adopts an independent drilling and welding fixing structure. The signal line and ground line enter the compartment through the limiting hole on the base and are soldered in the signal pad and copper via. The base and the top cover form a shield to avoid glue application and ensure the firmness of the signal pad and the shielding of the signal line.
It avoids the problem of increased impedance caused by excessive glue application, ensures the robustness of signal pads and the shielding of signal lines, facilitates maintenance and replacement, and is suitable for more scenarios.
Smart Images
Figure CN223809967U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to optical module technical field, concretely relates to a high speed cable independent type punching welding fixing structure and optical module. BACKGROUND
[0002] The signal line and ground wire of the high speed cable in the traditional optical module (namely, the high speed cable is called double-core coaxial line with ground wire, which has two signal lines and two ground wires, and the two ground wires are distributed on the outer side of the two signal lines) are all directly welded on the PCB board, and the defects of this mode are as follows: after welding, UV glue is coated, and ultraviolet light is cured to prevent the signal line from falling off and affecting the performance, if the coated amount of glue is too much during the coating process, the impedance will be affected, thereby affecting the performance of the optical module, and this problem has little influence on 10G, 25G, 40G, 100G and 200G low-speed optical modules, but has a very great influence on 800G and 1600G high-speed optical modules. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a high speed cable independent type punching welding fixing structure and optical module to overcome the above-mentioned deficiencies in the prior art.
[0004] The technical scheme for solving the above-mentioned technical problem of the utility model is as follows:
[0005] A high speed cable independent type punching welding fixing structure, comprising:
[0006] A PCB board and a high speed cable, the PCB board is fixed with at least one ground base, each base has a compartment, the PCB board has two signal pads in the area surrounded by the compartment of each base, a copper via hole is formed in each signal pad along the thickness direction, a limiting hole is formed in the side surface of each base and communicates with the compartment, the two signal lines of each high speed cable enter the compartment through the limiting hole of the base and are respectively inserted into the two via holes after stripping the protective layer and being bent by 90°, the section of the signal line stripped of the protective layer and bent by 90° is welded with the signal pad and the copper in the via hole, the ground wire of each high speed cable is welded with the base, and an upper cover is arranged on the base to cover the opening of the compartment.
[0007] The utility model has the advantages of:
[0008] 1) The fixing structure does not need dispensing, so it does not need to consider the problem of impedance increase caused by excessive dispensing, to ensure that it does not affect the performance of the high speed optical module;
[0009] 2) by opening a copper filled via hole in the thickness direction of each signal pad, then the two signal lines of each high-speed cable enter the compartment through the limiting hole on the base and are inserted into the two via holes after stripping the protective layer and bending 90 degrees, and the section of the signal line stripped of the protective layer and bent 90 degrees is welded with the copper covered in the signal pad and the via hole, which can ensure the firmness of the signal pad to avoid the signal pad being pulled off, and ensure the performance;
[0010] 3) The cooperation of the base and the upper cover forms a shielding cover, which can effectively avoid the interference of the signal lines in the high-speed cable;
[0011] 4) All units exist independently, that is, each base only limits one high-speed cable, which is convenient for maintenance and replacement, and is convenient for arrangement according to needs to be suitable for more scenes.
[0012] On the basis of the above technical scheme, the utility model can also be improved as follows.
[0013] Further, the section of the high-speed cable with the protective sleeve is located in the limiting hole and is limited by the limiting hole.
[0014] The above further beneficial effects are: the limiting hole on the base limits the section of the high-speed cable with the protective sleeve, thereby reducing the risk of loosening of the high-speed cable.
[0015] Further, recesses for grounding wire welding are provided on the surface of the base away from the PCB on both sides of the compartment and are in communication with the compartment and the limiting hole.
[0016] The above further beneficial effects are: when the signal lines in the high-speed cable enter the compartment through the limiting hole, the ground wire in the high-speed cable also enters the recess through the limiting hole at the same time, and the ground wire can be welded in the recess subsequently, making the welding of the ground wire very convenient.
[0017] Further, the section of the high-speed cable in the limiting hole has a copper / aluminum foil, the base away from the PCB has a first welding hole in communication with the limiting hole in the area corresponding to the copper / aluminum foil in the high-speed cable, and the upper cover has a second welding hole in communication therewith at the position corresponding to the first welding hole, and the second welding hole and the first welding hole jointly point to a solder block for welding the upper cover, the base and the copper / aluminum foil together.
[0018] The above further beneficial effects are: the upper cover, the base and the copper / aluminum foil in the high-speed cable are welded together, effectively reducing the risk of loosening of the high-speed cable, and the upper cover and the base only have one welding point, which is convenient for repair.
[0019] Further, the end of the upper cover away from the high-speed cable is clamped with the base.
[0020] The further beneficial effect is that the upper cover and the base are only welded at one point, and then are clamped to ensure the stability of the cooperation between the upper cover and the base, and facilitate the repair.
[0021] Further, the upper cover is provided with a buckle on the side away from the high-speed cable, and the base is provided with a clamping groove on the side, and the buckle on the upper cover is clamped into the clamping groove on the base to realize the clamping of the upper cover and the base.
[0022] The further beneficial effect is that after the welding relationship between the upper cover and the base is removed, the clamping structure facilitates the disassembly of the upper cover from the base.
[0023] Further, the upper cover is provided with a buckle on the side away from the high-speed cable, and the base is provided with a clamping groove on the side, and the buckle on the upper cover is clamped into the clamping groove on the base to realize the clamping of the upper cover and the base.
[0024] The further beneficial effect is that when the upper cover is placed on the base, the positioning block enters the positioning groove to realize the positioning of the upper cover and the base, and facilitate the assembly precision.
[0025] Further, the PCB is provided with at least one grounding pad, each base is welded with one of the grounding pads on the PCB, the upper cover is made of copper tinning, and the base is made of copper tinning.
[0026] The further beneficial effect is that the base is facilitated to complete grounding.
[0027] Further, the upper cover is provided with a slope on the side away from the high-speed cable.
[0028] The further beneficial effect is that when a PCB has multiple bases adjacent to each other along the length of the same side, the slope on the upper cover facilitates the high-speed cable in the front base to pass above the high-speed cable in the other base, and reduces the bending angle of the high-speed cable.
[0029] Based on the above technical scheme, the utility model also provides a high-speed cable independent type punching welding fixing structure.
[0030] The further beneficial effect is that the performance of the high-speed optical module is not affected. DRAWINGS
[0031] Figure 1 It is a first layout structure diagram of the high-speed cable independent type punching welding fixing structure.
[0032] Figure 2 It is a second layout structure diagram of the high-speed cable independent type punching welding fixing structure.
[0033] Figure 3 It is a first explosion diagram of part of the structure of the high-speed cable independent type punching welding fixing structure.
[0034] Figure 4 Second exploded view of the structure of the high-speed cable independent punching welding fixing structure part;
[0035] Figure 5 First local enlarged view of the structure of the high-speed cable independent punching welding fixing structure part;
[0036] Figure 6 Second local enlarged view of the structure of the high-speed cable independent punching welding fixing structure part.
[0037] In the drawings, the components represented by each reference numeral are listed as follows:
[0038] 1, PCB board, 110, signal pad, 111, via, 120, ground pad, 2, high-speed cable, 210, signal line, 220, ground wire, 230, copper / aluminum foil, 3, base, 310, compartment, 320, limiting hole, 330, groove, 340, first welding hole, 350, clamping groove, 360, positioning groove, 4, upper cover, 410, second welding hole, 420, buckle, 430, positioning block, 440, slope, 5, solder block. DETAILED DESCRIPTION
[0039] The principles and characteristics of the present application are described below in conjunction with the drawings, and the examples are only used to explain the present application and are not intended to limit the scope of the present application.
[0040] Example 1
[0041] As shown in Figures 1-6 A high-speed cable independent punching welding fixing structure comprises:
[0042] PCB board 1 and high-speed cable 2, at least one ground base 3 is fixed on the PCB board 1, i.e. the base 3 is made of metal material, the number of the base 3 fixed on the PCB board 1 can be one, two, four, six, twelve, etc., since each base 3 is independent, it can be arranged in 4+4+4+4 or 4+6+6, as shown in Figure 1 4+4+4+4 arrangement, as shown in Figure 2 4+6+6 arrangement, of course, this is only an exemplary description, and the specific arrangement can be arranged according to the needs to be suitable for more scenes;
[0043] Each base 3 has a compartment 310, which can be understood as a hole penetrating through the upper and lower surfaces of the base 3, and the PCB board 1 has two signal pads 110 in the area surrounded by the compartment 310 of each base 3, and a via hole 111 filled with copper is formed in each signal pad 110 along the thickness direction of the signal pad 110, and other conductive metal materials can also be selected. A limiting hole 320 is formed in the side surface of each base 3 and communicates with the compartment 310, and the cross-sectional size of the limiting hole 320 is determined according to the cross-sectional size of the high-speed cable 2 having a protective sleeve, and the cross-sectional size of the limiting hole 320 is usually consistent with the cross-sectional size of the high-speed cable 2 having a protective sleeve. The two signal lines 210 of each high-speed cable 2 enter the compartment 310 through the limiting hole 320 of the base 3, and are respectively inserted into the two via holes 111 after stripping the protective layer (insulating medium) and bending 90°. The section of the signal line 210 stripped of the protective layer and bent 90° is welded with the signal pad 110 and the copper filled in the via hole 111. The ground wire 220 of each high-speed cable 2 is welded with the base 3. Since the base 3 is grounded, the ground wire 220 of the high-speed cable 2 is also grounded when the ground wire 220 is welded with the base 3. In addition, the base 3 is provided with an upper cover 4 covering the opening of the compartment 310, and the base 3 and the upper cover 4 form a shielding cover.
[0044] Embodiment 2
[0045] As shown in Figures 1-6 , this embodiment is a further improvement based on embodiment 1, and the specific improvements are as follows:
[0046] The section of the high-speed cable 2 having a protective sleeve is located in the limiting hole 320 and is limited by the limiting hole 320, so that the risk of loosening (usually rotating) of the high-speed cable 2 can be reduced.
[0047] Embodiment 3
[0048] As shown in Figure 4 , Figure 5 , this embodiment is a further improvement based on embodiment 1 or 2, and the specific improvements are as follows:
[0049] The surface of the base 3 away from the PCB board 1 is provided with a groove 330 as a ground wire welding position on both sides of the compartment 310, that is, each base 3 has two grooves 330, and each groove 330 communicates with the compartment 310 and the limiting hole 320. When the signal line 210 of the high-speed cable 2 enters the compartment 310 through the limiting hole 320, the ground wire 220 of the high-speed cable 2 also enters the groove 330 through the limiting hole 320, and the ground wire 220 can be welded in the groove 330.
[0050] Embodiment 4
[0051] As shown in Figure 3、 Figure 4 、 Figure 5 As shown in FIGS. 1-3, the embodiment is a further improvement on the basis of any one of embodiments 1-3, and the specific improvements are as follows:
[0052] The section of the high-speed cable 2 in the limiting hole 320 has a copper / aluminum foil 230, the base 3 is provided with a first solder hole 340 on the surface away from the PCB 1 and communicating with the limiting hole 320 in the area corresponding to the copper / aluminum foil 230 in the high-speed cable 2, and the upper cover 4 is provided with a second solder hole 410 on the upper cover 4 corresponding to the first solder hole 340 and communicating with the first solder hole 340, and the second solder hole 410 and the first solder hole 340 together define a solder block 5 for soldering the upper cover 4, the base 3 and the copper / aluminum foil 230 together, effectively reducing the risk of loosening of the high-speed cable 2, and the upper cover 4 and the base 3 have only one soldering point, facilitating repair, and since the upper cover 4 and the base 3 are fixed by soldering, the upper cover 4 is also made of metal.
[0053] Embodiment 5
[0054] As shown in FIGS. 1-3, the embodiment is a further improvement on the basis of any one of embodiments 1-3, and the specific improvements are as follows: Figure 3 、 Figure 4 As shown in FIGS. 1-3, the embodiment is a further improvement on the basis of any one of embodiments 1-3, and the specific improvements are as follows:
[0055] The end of the upper cover 4 away from the high-speed cable 2 is clamped with the base 3, and since the upper cover 4 and the base 3 have only one soldering point, the clamping cooperation is used to ensure the stability of the cooperation between the upper cover 4 and the base 3 and facilitate repair.
[0056] As a further optimization of the above technical solution, the upper cover 4 is provided with a buckle 420 on the side away from the high-speed cable 2, the base 3 is provided with a clamping groove 350 on the side, and the buckle 420 on the upper cover 4 is clamped into the clamping groove 350 on the base 3 to realize the clamping of the upper cover 4 and the base 3, and after the soldering relationship between the upper cover 4 and the base 3 is removed, the clamping structure facilitates the disassembly of the upper cover 4 from the base 3.
[0057] Embodiment 6
[0058] As shown in FIGS. 1-3, the embodiment is a further improvement on the basis of any one of embodiments 1-3, and the specific improvements are as follows: Figures 1-4 、 As shown in FIGS. 1-3, the embodiment is a further improvement on the basis of any one of embodiments 1-3, and the specific improvements are as follows:
[0059] The upper cover 4 is provided with a positioning block 430 on each side, and the base 3 is provided with a positioning groove 360 on each side corresponding to the positioning block 430, and when the upper cover 4 is placed on the base 3, the positioning block 430 enters the positioning groove 360 to realize the positioning of the upper cover 4 and the base 3, and facilitate the assembly precision.
[0060] Embodiment 7
[0061] As Figure 6 The embodiment is further improved on the basis of any one of the embodiments 1-6, and the specific improvements are as follows:
[0062] The PCB 1 has at least one ground pad 120, and each base 3 is welded with one ground pad 120 on the PCB 1, so that the base 3 is grounded. The upper cover 4 is preferably made of copper tinning, and the base 3 is preferably made of copper tinning. Of course, in actual application, the upper cover 4 and the base 3 can also be made of other materials.
[0063] Embodiment 8
[0064] As Figures 1-4 The embodiment is further improved on the basis of any one of the embodiments 1-7, and the specific improvements are as follows:
[0065] The upper cover 4 has a slope 440 on the side away from the high-speed cable 2. When a PCB 1 has multiple bases 3 adjacent to each other on the same side along the length direction, the slope 440 on the upper cover 4 facilitates the high-speed cable 2 in the front base 3 to pass above, so as to reduce the bending angle of the high-speed cable 2.
[0066] Embodiment 9
[0067] An optical module, comprising the high-speed cable independent punching welding fixing structure as described in any one of the embodiments 1-8.
[0068] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.
Claims
1. A high speed cable independent punch welding fixture structure, characterized by, The application relates to a PCB board (1) and high-speed cables (2), the PCB board (1) is provided with at least one ground base (3), each base (3) is provided with a compartment (310), the PCB board (1) is provided with two signal pads (110) in the area surrounded by the compartment (310) of each base (3), each signal pad (110) is provided with a copper-plated via hole (111) along the thickness direction, the side surface of each base (3) is provided with a limiting hole (320) communicated with the compartment (310), two signal lines (210) of each high-speed cable (2) enter the compartment (310) through the limiting hole (320) of the base (3) and are respectively inserted into the two via holes (111) after stripping the protective layer and being bent by 90 degrees, the section of the signal line (210) stripped of the protective layer and bent by 90 degrees is welded with the copper in the signal pad (110) and the via hole (111), the ground wire (220) of each high-speed cable (2) is welded with the base (3), and the base (3) is provided with an upper cover (4) covering the opening of the compartment (310). The section of the high-speed cable (2) provided with a protective sleeve is located in the limiting hole (320) and is limited by the limiting hole (320).
2. A high speed cable independent piercing welding fixture structure according to claim 1, characterized in that, The surface of the base (3) away from the PCB board (1) is provided with a groove (330) on both sides of the compartment (310) and communicated with the compartment (310) and the limiting hole (320) and used as a ground wire welding position.
3. The high speed cable independent piercing welding fixture structure according to claim 1, wherein, The section of the high-speed cable (2) located in the limiting hole (320) is provided with a copper / aluminum foil (230), the surface of the base (3) away from the PCB board (1) is provided with a first welding hole (340) communicated with the limiting hole (320) in the area corresponding to the copper / aluminum foil (230) in the high-speed cable (2), the upper cover (4) is provided with a second welding hole (410) communicated with the first welding hole (340), and the second welding hole (410) and the first welding hole (340) are jointly filled with a solder block (5) for welding the upper cover (4), the base (3) and the copper / aluminum foil (230) together.
4. The high speed cable independent piercing welding fixture structure according to claim 1, wherein, The end of the upper cover (4) away from the high-speed cable (2) is clamped with the base (3).
5. A high speed cable independent piercing welding fixture structure according to claim 4, wherein The side of the upper cover (4) away from the high-speed cable (2) is provided with a buckle (420), the side surface of the base (3) is provided with a clamping groove (350), and the buckle (420) on the upper cover (4) is clamped into the clamping groove (350) on the base (3) to realize the clamping of the upper cover (4) and the base (3).
6. A high speed cable independent piercing welding fixture structure according to claim 5, wherein The two sides of the upper cover (4) are respectively provided with a positioning block (430), and the two sides of the base (3) are respectively provided with a positioning groove (360) matched with the positioning block (430).
7. The high speed cable independent piercing welding fixture of claim 1, wherein, The PCB board (1) is provided with at least one ground pad (120), each base (3) is welded with one of the ground pads (120) on the PCB board (1), the upper cover (4) is made of copper tinning, and the base (3) is made of copper tinning.
8. A high speed cable independent piercing welding fixture structure according to any one of claims 1 to 7, characterized in that, The side of the upper cover (4) away from the high-speed cable (2) is provided with a slope (440).
9. The high speed cable stand alone piercing welding fixture of claim 1, wherein, 10. An optical module characterized by comprising: The high-speed cable independent piercing welding fixing structure as claimed in any one of claims 1-9 is included.