High-speed cable independent fixing structure, assembling method and optical module

Abstract

The invention relates to an independent fixing structure for a high-speed cable, which is characterized in that a base is welded on each grounding bonding pad on a PCB (Printed Circuit Board), a compartment is arranged on each base, two signal bonding pads are arranged in an area enclosed by the compartment of each base on the PCB, a metal wire clamp is welded on each signal bonding pad, and the metal wire clamp is connected with a metal wire. The heads of two signal lines of each high-speed cable enter the compartments and are respectively inserted into the jacks on the two metal wire clamps after the protective layers are stripped and the wire cores are bent by 90 degrees, a ground wire of each high-speed cable is welded with the base, and a cover plate for limiting the high-speed cables is fixed on the base. And an upper cover for sealing and covering the opening of the compartment is fixed on each base. An optical module comprises a high-speed cable independent fixing structure. The fixing structure has the beneficial effects that the fixing structure does not need adhesive dispensing, so that the problem of impedance increase caused by excessive adhesive dispensing does not need to be considered, the performance of the high-speed optical module is not influenced, and the firmness of the signal bonding pad can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of optical modules, and in particular to an independent fixing structure and an assembly method of a high-speed cable and an optical module. Background Art

[0002] In traditional optical modules, the signal line and ground line of the high-speed cable (that is, this type of high-speed cable is called a twinax cable with ground line, which has two signal lines and two ground lines, and the two ground lines are distributed on the outside of the two signal lines) are all directly welded on the PCB board. The disadvantages of this method are: UV glue must be applied after welding and cured with a UV lamp to prevent the signal line from falling off and affecting performance. During the glue application process, if the amount of glue applied is too much, it will affect the impedance and thus affect the performance of the optical module. This problem has little impact on 10G, 25G, 40G, 100G, and 200G low-speed optical modules, but it has a very large impact on 800G and 1600G high-speed optical modules. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an independent fixing structure and an assembly method of a high-speed cable and an optical module to overcome the deficiencies in the above-mentioned prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A high-speed cable independent fixing structure, comprising:

[0006] A PCB board and a high-speed cable, wherein the PCB board has at least one grounding pad, each grounding pad is welded with a base, each base is provided with a compartment, the PCB board has two signal pads in the area surrounded by the compartment of each base, each signal pad is welded with a metal wire card, each metal wire card is provided with a plug hole along its height direction, the heads of two signal wires of each high-speed cable enter the compartment and are respectively inserted into the plug holes on the two metal wire cards after the protective layer is peeled off and the wire core is bent 90 degrees, the section of the signal wire in the plug hole is welded to the plug hole, the ground wire of each high-speed cable is welded to the base, a cover plate is fixed on the base in the area without the compartment to press the high-speed cable and limit the section with the protective cover, and an upper cover for sealing the compartment opening is fixed on each base.

[0007] The beneficial effects of the present invention are:

[0008] 1) The fixed structure does not require glue dispensing, so there is no need to consider the problem of increased impedance caused by excessive glue dispensing, to ensure that it does not affect the performance of the high-speed optical module;

[0009] 2) A metal wire card is welded on each signal pad, and a plug hole is opened on each metal wire card along its height direction. Then, the heads of the two signal wires of each high-speed cable enter the compartment and are respectively inserted into the plug holes on the two metal wire cards after the protective layer is peeled off and the wire core is bent 90 degrees. The section of the signal wire in the plug hole is welded to the plug hole. The signal wire will be firmly fixed in the plug hole on the metal wire card, which can ensure the firmness of the signal pad to avoid the signal pad being pulled off, and the high-speed cable will not be moved, ensuring the performance. The signal wire is bent 90 degrees and then enters the plug hole and is welded and fixed. Compared with the signal wire being welded horizontally on the metal wire card, the contact area is small, which is convenient for controlling pressure and soldering to avoid affecting impedance and performance.

[0010] 3) The base, cover plate and upper cover form a shielding cover, which can effectively prevent the signal line in the high-speed cable from being interfered;

[0011] 4) All units exist independently, that is, each base is limited to only one high-speed cable, which is convenient for maintenance and replacement, and can be arranged according to needs to be suitable for more scenarios.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, a limiting hole communicating with the compartment is formed between the cover plate and the base at the interface, and the section of the high-speed cable having the protective cover is located in the limiting hole.

[0014] A further beneficial effect of adopting the above is that the limiting hole in this solution limits the section of the high-speed cable with the protective cover, thereby reducing the risk of the high-speed cable loosening.

[0015] Furthermore, the limiting hole is composed of a first limiting groove on the surface of the base facing away from the PCB board and a second limiting groove on the surface of the cover plate close to the base. Grooves connected to the first limiting groove and serving as ground wire welding positions are respectively opened on both sides of the surface of the base facing away from the PCB board. Solder is attached to the bottom of the groove. The two ground wires of each high-speed cable are respectively located in the two grooves and are soldered in the grooves through the solder in the grooves.

[0016] A further beneficial effect of the above is that when the high-speed cable is pre-installed on the base, the ground wire in the high-speed cable also enters the groove simultaneously, and the ground wire can be subsequently welded in the groove, making the welding of the ground wire very convenient.

[0017] Furthermore, a first blind hole is opened in the first limiting groove on the base at the copper / aluminum foil corresponding to the high-speed cable, and a second blind hole is opened in the second limiting groove on the cover plate at the copper / aluminum foil corresponding to the high-speed cable. Solder is respectively attached to the bottom of the first blind hole and the bottom of the second blind hole. The solder in the first blind hole is used to weld the base to the copper / aluminum foil of the high-speed cable, and the solder in the second blind hole is used to weld the cover plate to the copper / aluminum foil of the high-speed cable.

[0018] The above further beneficial effect is: during assembly, when the cover plate is placed on the base, the solder in the first blind hole and the solder in the second blind hole can be melted by instantaneous heating, so that the high-speed cable, the base and the cover plate are welded together to form an independent unit, which can realize pre-production. At the same time, since the base, the high-speed cable and the cover plate are welded together, the risk of the high-speed cable loosening can be reduced, making assembly and welding more convenient.

[0019] Furthermore, welding grooves connected to the first limiting groove are respectively provided on both sides of the first limiting groove on the surface of the base facing away from the PCB board, and a welding block extending into the welding groove is respectively provided on the surface of the cover plate close to the base opposite to each welding groove, and solder for welding the welding block in the welding groove is respectively attached to the bottom of the welding groove and the surface of the welding block close to the base.

[0020] The above further beneficial effect is as follows: when the cover is placed on the base, the two welding blocks on the cover respectively enter the two welding grooves on the base, the bottom of the welding groove is attached with solder, and the surface of the welding block close to the base is attached with solder, and the solder at the bottom of the welding groove and the solder on the welding block can be melted by instantaneous heating, so that the welding block can be welded in the welding groove. Of course, the cooperation between the welding block and the welding groove can also realize the positioning between the cover and the base, ensure the assembly accuracy, and make assembly and welding more convenient.

[0021] Further, solder is applied to the ground pad and solder is applied inside the socket.

[0022] The above method has the further beneficial effect of: when assembling the base and the PCB board, and assembling the signal line of the high-speed cable and the jack on the metal wire card, first place the base on the ground pad, then assemble the signal line of the high-speed cable and the jack on the metal wire card, and then melt the solder in the ground pad and the jack by instant heating, and then the assembly is completed, making assembly and welding more convenient.

[0023] Furthermore, the upper cover is provided with a first buckle and a second buckle on two side surfaces in the length direction of the high-speed cable, respectively; the cover plate is provided with a first slot on the side close to the upper cover, and the base is provided with a second slot on the side away from the high-speed cable; the first buckle and the second buckle are respectively inserted into the first slot and the second slot to realize the upper cover being respectively connected with the base and the cover plate.

[0024] The above method has the further beneficial effect that if maintenance is required, the upper cover can be opened, which is simple and convenient, and can ensure the firmness of the upper cover assembly.

[0025] Furthermore, at least one notch serving as a tilting position of the upper cover is provided on the surface of the cover plate near the edge of the upper cover.

[0026] A further beneficial effect of the above method is that if maintenance is required, the upper cover can be tilted up through the notch on the cover plate to separate the upper cover from the base and the cover plate, thereby facilitating the removal of the upper cover.

[0027] Based on the above technical solution, the present invention also provides a method for assembling a high-speed cable independent fixing structure, which is used to assemble the above high-speed cable independent fixing structure, comprising the following steps:

[0028] S10, soldering a metal wire card on each signal pad of the PCB board;

[0029] S20, cutting the high-speed cable, peeling off the protective layer at the head of the signal line to expose the metal wire core, and then bending the wire core of the signal line with the protective layer peeled off at the head by 90°;

[0030] S30, pre-install the high-speed cable on the base, and place the section of the high-speed cable with the protective cover in the first limiting groove, then cover the cover plate, and place the section of the high-speed cable with the protective cover in the second limiting groove of the cover plate, and place the head of the signal line of the high-speed cable bent 90 degrees in the compartment, and then melt the solder in the groove, the solder in the first blind hole, the solder in the second blind hole, the solder in the welding groove, and the solder on the welding block by instant heating, so that the high-speed cable, the base and the cover plate are welded together to form an independent unit, and the welding of the ground wire and the base is completed;

[0031] S40, bend the signal line head of the high-speed cable in the independent unit obtained in S30 by 90 degrees and align it with the jack on the metal wire card, and allow the wire core of the signal line head with the protective layer peeled off to enter the jack, and allow the base to contact the ground pad, and then melt the solder in the jack and the solder on the ground pad by instant heating, so that the base in the independent unit is welded to the PCB board, and the wire core of the signal line head with the protective layer peeled off is welded to the jack;

[0032] S50, a top cover is placed on the base to cover the compartment opening, and the assembly is completed.

[0033] A further beneficial effect of the above method is that the high-speed cable, the base and the cover are welded together to form an independent unit, so that pre-production can be realized, and only welding with the PCB board is required later, which simplifies the assembly process.

[0034] Based on the above technical solution, the present invention further provides an optical module, characterized in that it includes the above-mentioned high-speed cable independent fixing structure.

[0035] A further beneficial effect of adopting the above method is that the performance of the high-speed optical module can be ensured not to be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a first layout diagram of a high-speed cable independent fixing structure;

[0037] Figure 2 A second layout diagram of a high-speed cable independent fixing structure;

[0038] Figure 3 It is the first exploded view of the structure of the independent fixing structure of the high-speed cable;

[0039] Figure 4 It is the second exploded view of the independent fixing structure part of the high-speed cable;

[0040] Figure 5 It is the third exploded view of the independent fixed structure part of the high-speed cable;

[0041] Figure 6 It is the fourth exploded view of the independent fixing structure part of the high-speed cable;

[0042] Figure 7 It is a first partial enlarged view of the structure of the independent fixing structure of the high-speed cable;

[0043] Figure 8 This is the second partial enlarged view of the independent fixed structure of the high-speed cable.

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] 1. PCB board, 110, ground pad, 120, signal pad, 2. high-speed cable, 210, signal line, 220, ground line, 230, copper / aluminum foil, 3. base, 310, compartment, 320, first limiting groove, 321, first limiting surface, 330, groove, 340, first blind hole, 350, welding groove, 360, second card slot, 370, positioning groove, 4. metal wire card, 410, jack, 5. cover, 510, second limiting groove, 511, second limiting surface, 520, second blind hole, 530, welding block, 540, first card slot, 550, notch, 6. upper cover, 610, first buckle, 620, second buckle, 630, positioning block, 640, slope. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] Example 1

[0048] like Figures 1 to 8 As shown, a high-speed cable independent fixing structure includes:

[0049] The PCB board 1 and the high-speed cable 2, the PCB board 1 has at least one grounding pad 110, the specific number can be one, two, three, four, etc., which is only an exemplary description. The PCB board 1 can have a grounding pad 110 on one side or on both sides, which is determined according to actual needs; a base 3 is welded on each grounding pad 110, and since each base 3 is independent, they can be arranged in a 4+4+4+4 or 4+6+6 manner, such as Figure 1 The following is a 4+4+4+4 arrangement: Figure 2 The arrangement shown is 4+6+6. Of course, this is just an exemplary description. You can arrange it according to your needs to apply to more scenarios.

[0050] Each base 3 is provided with a compartment 310, which can be understood as a hole that passes through the upper and lower surfaces of the base 3. The PCB board 1 has two signal pads 120 in the area surrounded by the compartment 310 of each base 3, and a metal wire card 4 is welded on each signal pad 120, that is, there are two metal wire cards 4 in the area surrounded by the compartment 310 of each base 3. The material of the metal wire card 4 can be copper, and of course other materials are not excluded. This is just an exemplary description;

[0051] A socket 410 is provided on each metal wire card 4 along its height direction, and the heads of the two signal wires 210 of each high-speed cable 2 enter the compartment 310 and are respectively inserted into the sockets 410 on the two metal wire cards 4 after stripping off the protective layer and bending 90 degrees. The section of the signal wire 210 in the socket 410 (the wire core with the protective layer stripped off) is welded to the socket 410, and the ground wire 220 of each high-speed cable 2 is welded to the base 3. Since the base 3 is grounded, when the ground wire 220 is welded to the base 3, the ground wire 220 in the high-speed cable 2 is also grounded. A cover plate 5 is fixed on the base 3 in the area where the compartment 310 is not provided to press the high-speed cable 2 and limit the section with the protective cover (high-speed cable 2). The base 3 cooperates with the cover plate 5 to prevent the high-speed cable 2 from loosening. An upper cover 6 is fixed on each base 3 to cover the opening of the compartment 310, and the base 3 cooperates with the upper cover 6 to form a shielding cover.

[0052] Example 2

[0053] like Figure 1 to Figure 7 As shown, this embodiment is a further improvement on the basis of embodiment 1, and the details are as follows:

[0054] A limiting hole connected to the compartment 310 is formed between the cover plate 5 and the base 3 at the interface, and the section of the high-speed cable 2 with the protective cover is located in the limiting hole. The cross-sectional size of the limiting hole is determined based on the cross-sectional size of the high-speed cable 2 with the protective cover, and the two are usually kept consistent, so that the section of the high-speed cable 2 with the protective cover is located in the limiting hole and the limiting hole limits it (the high-speed cable 2), thereby reducing the risk of the high-speed cable 2 loosening (usually referring to rotation).

[0055] As a further optimization of the above solution:

[0056] The limiting hole is composed of a first limiting groove 320 on the surface of the base 3 away from the PCB board 1 and a second limiting groove 510 on the surface of the cover plate 5 close to the base 3. The base 3 is provided with grooves 330 on both sides of the first limiting groove 320 on the surface away from the PCB board 1, which are connected to the first limiting groove 320 and serve as ground wire welding positions. Solder is attached to the bottom of the groove 330. The two ground wires 220 of each high-speed cable 2 are respectively located in the two grooves 330 and pass through the grooves 330. The solder is welded in the groove 330. During assembly, the high-speed cable 2 is pre-installed in the first limiting groove 320 on the base 3, and the head of the signal line 210 of the high-speed cable 2 is bent 90° in the compartment 310, and then the cover plate 5 is covered. At this time, the high-speed cable 2 is also in the second limiting groove 510, and the two ground wires 220 are respectively in the two grooves 330. The solder in the groove 330 is melted by instantaneous heating, so that the ground wire 220 is soldered in the groove 330.

[0057] In this embodiment, the first limiting groove 320 is a stepped groove, which has a first limiting surface 321 for limiting the end face of the protective cover of the high-speed cable 2. The second limiting groove 510 is also a stepped groove, which has a second limiting surface 511 for limiting the end face of the protective cover of the high-speed cable 2. The first limiting surface 321 and the second limiting surface 511 can limit the movement of the high-speed cable 2 toward the compartment 310.

[0058] Example 3

[0059] like Figure 3 to Figure 7 As shown, this embodiment is a further improvement on the basis of embodiment 2, and the details are as follows:

[0060] A first blind hole 340 is formed in the first limiting groove 320 on the base 3 at a position corresponding to the copper / aluminum foil 230 of the high-speed cable 2, and a second blind hole 520 is formed in the second limiting groove 510 on the cover plate 5 at a position corresponding to the copper / aluminum foil 230 of the high-speed cable 2. Solder is attached to the bottom of the first blind hole 340, and solder is attached to the bottom of the second blind hole 520. The solder in the first blind hole 340 is used to weld the base 3 to the copper / aluminum foil 230 of the high-speed cable 2, and the solder in the second blind hole 520 is used to weld the cover plate 5 to the copper / aluminum foil 230 of the high-speed cable 2. During assembly, when the cover plate 5 is covered on the base 3, the solder in the first blind hole 340 and the solder in the second blind hole 520 can be melted by instantaneous heating, so that the high-speed cable 2, the base 3 and the cover plate 5 are welded together to form an independent unit.

[0061] Example 4

[0062] like Figure 3 to Figure 6 As shown, this embodiment is a further improvement on the basis of embodiment 3, and the details are as follows:

[0063] On the surface of the base 3 facing away from the PCB board 1, welding grooves 350 connected to the first limiting groove 320 are respectively opened on both sides of the first limiting groove 320, and a welding block 530 is respectively provided on the surface of the cover plate 5 close to the base 3 at a position opposite to each welding groove 350. When the cover plate 5 is covered on the base 3, the two welding blocks 530 on the cover plate 5 respectively enter the two welding grooves 350 on the base 3, and solder is attached to the bottom of the welding groove 350. Solder is also attached to the surface of the welding block 530 close to the base 3. The solder at the bottom of the welding groove 350 and the solder on the welding block 530 can be melted by instantaneous heating, so that the welding block 530 can be welded in the welding groove 350. Of course, the cooperation between the welding block 530 and the welding groove 350 can also realize the positioning between the cover plate 5 and the base 3.

[0064] Example 5

[0065] like Figure 6 , Figure 7 , Figure 8 As shown, this embodiment is a further improvement on the basis of embodiment 4, and the details are as follows:

[0066] Solder is attached to the ground pad 110, and solder is attached to the socket 410. When the base 3 and the PCB board 1 are assembled, and the signal line 210 of the high-speed cable 2 and the socket 410 on the metal wire card 4 are assembled, the base 3 is first placed on the ground pad 110, and then the signal line 210 of the high-speed cable 2 and the socket 410 on the metal wire card 4 are assembled. Then, the ground pad 110 and the solder in the socket 410 are melted by instant heating, and the assembly is completed, making assembly and welding more convenient.

[0067] To ensure the accuracy of the installation position of the base 3 on the grounding pad 110, multiple alignment holes can be designed on the base 3, and multiple alignment holes are also designed on the grounding pad 110. When the base 3 is soldered in a patch manner, the alignment holes on the base 3 and the alignment holes on the grounding pad 110 can be used to complete the installation position of the base 3 on the grounding pad 110, thereby reducing the difficulty of assembly.

[0068] Example 6

[0069] like Figure 3 to Figure 7 As shown, this embodiment is a further improvement on any one of Embodiments 1 to 5, and the details are as follows:

[0070] The upper cover 6 is respectively provided with a first buckle 610 and a second buckle 620 on the two side surfaces in the length direction of the high-speed cable 2, the cover plate 5 is provided with a first slot 540 on the side close to the upper cover 6, and the base 3 is provided with a second slot 360 on the side away from the high-speed cable 2. When the upper cover 6 is covered on the base 3, the first buckle 610 is snapped into the first slot 540 and the second buckle 620 is snapped into the second slot 360, so that the upper cover 6 is respectively snapped with the base 3 and the cover plate 5. If maintenance is required, the upper cover 6 can be opened. In this embodiment, only a structure in which the upper cover 6 is respectively snapped with the base 3 and the cover plate 5 is introduced. In actual application, other snap-on methods or other connection methods are not excluded.

[0071] As a further optimization of the above solution:

[0072] At least one notch 550 is provided on the surface of the cover plate 5 near the edge of the upper cover 6 as a lifting position of the upper cover. If maintenance is required, the upper cover 6 can be lifted up through the notch 550 on the cover plate 5 to disengage the upper cover 6 from the clamping state with the base 3 and the cover plate 5 respectively. In this embodiment, the number of notches 550 can be one, two, three, etc. The number of notches 550 in the given figure is two, which is only an example and is not explicitly limited.

[0073] Example 7

[0074] like Figure 3 to Figure 7 As shown, this embodiment is a further improvement on any one of Embodiments 1 to 6, and the details are as follows:

[0075] A positioning block 630 is provided on both sides of the upper cover 6, and a positioning groove 370 matching the positioning block 630 is provided on both sides of the base 3 at the corresponding positioning block 630. When the upper cover 6 is covered on the base 3, the positioning block 630 enters the positioning groove 370 to realize the positioning of the upper cover 6 and the base 3, which makes it easy to ensure the assembly accuracy.

[0076] The upper cover 6 is preferably made of tin-plated copper, and the base 3 is preferably made of tin-plated copper. Of course, in actual application, it is not ruled out that the upper cover 6 and the base 3 are made of other materials.

[0077] The upper cover 6 has a slope 640 on the side facing away from the high-speed cable 2. When a PCB board 1 has multiple bases 3 adjacent to each other on the same surface along its length direction, the slope 640 on the upper cover 6 facilitates the high-speed cable 2 in another base 3 in front of it to pass over it, thereby reducing the bending angle of the high-speed cable 2.

[0078] Example 8

[0079] A method for assembling a high-speed cable independent fixing structure is used to assemble the high-speed cable independent fixing structure, comprising the following steps:

[0080] S10, soldering a metal wire card 4 on each signal pad 120 of the PCB board 1;

[0081] S20, cutting the high-speed cable 2, peeling off the protective layer at the head of the signal line 210 to expose the metal wire core, and then bending the wire core of the signal line 210 with the protective layer peeled off at the head by 90°;

[0082] S30, pre-install (directly place) the high-speed cable 2 on the base 3, and place the section of the high-speed cable 2 with the protective cover in the first limiting groove 320, then cover the cover plate 5, and place the section of the high-speed cable 2 with the protective cover in the second limiting groove 510 of the cover plate 5, that is, the section of the high-speed cable 2 with the protective cover is in the limiting hole, and place the head of the signal line 210 bent 90° in the compartment 310, and then melt the solder in the groove 330, the solder in the first blind hole 340, the solder in the second blind hole 520, the solder in the welding groove 350, and the solder on the welding block 530 by instant heating, so that the high-speed cable 2, the base 3 and the cover plate 5 are welded together to form an independent unit, and the welding of the ground wire 220 and the base 3 is completed. The independent unit can be pre-produced;

[0083] S40, bend the head of the signal line 210 of the high-speed cable 2 obtained in the independent unit in S30 by 90 degrees and align it with the jack 410 on the metal wire card 4, and allow the wire core of the signal line 210 with the protective layer peeled off to enter the jack 410, and allow the base 3 to contact the grounding pad 110, and then melt the solder in the jack 410 and the solder on the grounding pad 110 by instant heating, so that the base 3 in the independent unit is welded to the PCB board 1, and the wire core of the signal line 210 with the protective layer peeled off is welded to the jack 410, at this time, the independent unit and the PCB board 1 are welded as a whole;

[0084] S50, a top cover 6 is placed on the base 3 to cover the opening of the compartment 310, and the assembly is completed.

[0085] Example 9

[0086] An optical module includes the high-speed cable independent fixing structure as described in any one of embodiments 1 to 7.

[0087] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A high-speed cable independent fixing structure, characterized in that: include: A PCB (1) and a high-speed cable (2), wherein the PCB (1) has at least one ground pad (110), each ground pad (110) is welded to a base (3), each base (3) is provided with a compartment (310), the PCB (1) has two signal pads (120) in an area surrounded by the compartment (310) of each base (3), each signal pad (120) is welded to a metal wire clip (4), each metal wire clip (4) is provided with a plug hole (410) along its height direction, and each high-speed cable (2) has two signal wires (210) ) enters the compartment (310) and after the protective layer is peeled off and the wire core is bent 90 degrees, it is respectively inserted into the jacks (410) on the two metal wire cards (4); the section of the signal line (210) at the jack (410) is welded to the jack (410); the ground wire (220) of each high-speed cable (2) is welded to the base (3); a cover plate (5) is fixed on the base (3) in an area where no compartment (310) is provided, which presses the high-speed cable (2) and limits the section with the protective cover; and an upper cover (6) is fixed on each base (3) to cover the opening of the compartment (310).

2. The high-speed cable independent fixing structure according to claim 1, characterized in that: A limiting hole communicating with the compartment (310) is formed between the cover plate (5) and the base (3) at the interface, and the section of the high-speed cable (2) having the protective cover is located in the limiting hole.

3. A high-speed cable independent fixing structure according to claim 1 or 2, characterized in that: The limiting hole is composed of a first limiting groove (320) located on the surface of the base (3) away from the PCB board (1) and a second limiting groove (510) located on the surface of the cover plate (5) close to the base (3). The base (3) is provided with grooves (330) on both sides of the first limiting groove (320) on the surface away from the PCB board (1), which are connected to the first limiting groove (320) and serve as ground wire welding positions. Solder is attached to the bottom of the groove (330). The two ground wires (220) of each high-speed cable (2) are respectively located in the two grooves (330) and are soldered in the groove (330) through the solder in the groove (330).

4. The high-speed cable independent fixing structure according to claim 3, characterized in that: A first blind hole (340) is provided in the first limiting groove (320) on the base (3) at a position corresponding to the copper / aluminum foil (230) of the high-speed cable (2), and a second blind hole (520) is provided in the second limiting groove (510) on the cover plate (5) at a position corresponding to the copper / aluminum foil (230) of the high-speed cable (2). Solder is respectively attached to the bottom of the first blind hole (340) and the bottom of the second blind hole (520). The solder in the first blind hole (340) is used to weld the base (3) and the copper / aluminum foil (230) of the high-speed cable (2), and the solder in the second blind hole (520) is used to weld the cover plate (5) and the copper / aluminum foil (230) of the high-speed cable (2).

5. The high-speed cable independent fixing structure according to claim 4, characterized in that: On the surface of the base (3) facing away from the PCB board (1), welding grooves (350) connected to the first limiting groove (320) are respectively provided on both sides of the first limiting groove (320); on the surface of the cover plate (5) close to the base (3), a welding block (530) is respectively provided opposite to each welding groove (350) and extends into the welding groove (350); and solder for welding the welding block (530) in the welding groove (350) is respectively attached to the bottom of the welding groove (350) and the surface of the welding block (530) close to the base (3).

6. The high-speed cable independent fixing structure according to claim 5, characterized in that: Solder is attached to the ground pad (110), and solder is attached inside the plug hole (410).

7. The high-speed cable independent fixing structure according to claim 1, characterized in that: The upper cover (6) is provided with a first buckle (610) and a second buckle (620) on two side surfaces in the length direction of the high-speed cable (2), respectively; the cover plate (5) is provided with a first clamping groove (540) on the side surface close to the upper cover (6); the base (3) is provided with a second clamping groove (360) on the side surface facing away from the high-speed cable (2); the first buckle (610) and the second buckle (620) are respectively clamped into the first clamping groove (540) and the second clamping groove (360) to realize the upper cover (6) being clamped with the base (3) and the cover plate (5) respectively.

8. The high-speed cable independent fixing structure according to claim 7, characterized in that: The surface of the cover plate (5) is provided with at least one notch (550) at an edge close to the upper cover (6) to serve as a tilting position of the upper cover.

9. A method for assembling a high-speed cable independent fixed structure, characterized in that: The method for assembling the high-speed cable independent fixing structure as claimed in claim 6 comprises the following steps: S10, soldering a metal wire clip (4) on each signal pad (120) of the PCB board (1); S20, cutting the high-speed cable (2), peeling off the protective layer at the head of the signal line (210) to expose the metal wire core, and then bending the wire core of the signal line (210) with the protective layer peeled off at the head by 90°; S30, pre-installing the high-speed cable (2) on the base (3), and allowing the section of the high-speed cable (2) with the protective cover to be located in the first limiting groove (320), and then covering the cover plate (5), and allowing the section of the high-speed cable (2) with the protective cover to be located in the second limiting groove (510) of the cover plate (5), and allowing the head of the signal line (210) of the high-speed cable (2) bent 90 degrees to be located in the compartment (310), and then melting the solder in the groove (330), the solder in the first blind hole (340), the solder in the second blind hole (520), the solder in the welding groove (350), and the solder on the welding block (530) by instant heating, so that the high-speed cable (2), the base (3) and the cover plate (5) are welded together to form an independent unit, and the welding of the ground wire (220) and the base (3) is completed; S40, bend the head of the signal line (210) of the high-speed cable (2) obtained in the independent unit in S30 by 90 degrees and align it with the jack (410) on the metal wire card (4), and allow the wire core of the signal line (210) with the protective layer peeled off to enter the jack (410), and allow the base (3) to contact the grounding pad (110), and then melt the solder in the jack (410) and the solder on the grounding pad (110) by instant heating, so that the base (3) in the independent unit is welded to the PCB board (1), and the wire core of the signal line (210) with the protective layer peeled off is welded to the jack (410); S50, a top cover (6) covering the opening of the compartment (310) is placed on the base (3), and the assembly is completed.

10. An optical module, characterized in that: It comprises the independent fixing structure of a high-speed cable as described in any one of claims 1 to 8.

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