High-speed cable penetrating type welding upper cover and lower cover separating type fixing structure and optical module

Abstract

The utility model relates to a high-speed cable penetrating type welding upper and lower cover separation type fixing structure, which is characterized in that at least one grounded base is fixed on a PCB (printed circuit board) along the length direction, an upper cover is fixed on each base, and a plurality of compartments which are distributed in rows and are independent from one another are arranged on the base in a cover sealing area of the upper cover; a limiting hole communicated with the base is formed in the position, corresponding to each compartment, of the side face, away from the golden finger of the PCB, and two signal bonding pads are arranged in the area, defined by each compartment, of the PCB. Signal lines in the multiple high-speed cables of each high-speed cable set enter the corresponding compartments through the limiting holes in one base and are welded to the signal bonding pads, the sections, provided with the protective sleeves, of the high-speed cables are limited through the limiting holes, and ground wires in the high-speed cables are welded to the bases. The fixing structure has the beneficial effects that the fixing structure does not need dispensing, so that the problem of impedance increase caused by excessive dispensing does not need to be considered, and the performance of the high-speed optical module is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical module technical field, concretely relates to a high speed cable through type welding upper and lower cover separation type fixed structure and optical module. BACKGROUND

[0002] The signal line and ground wire of high speed cable in traditional optical module (namely this kind of high speed cable is called double core coaxial line with ground wire, it has two signal lines and two ground wires, and two ground wires are distributed on the outside of two signal lines) are all directly welded on the PCB board, the defect of this mode is: after welding, UV glue is coated, and ultraviolet lamp is solidified, so as to prevent signal line from falling off and affecting performance, if the coated glue amount is too much in the process of coating, then the impedance will be affected, thereby the performance of optical module is affected, this problem has little influence on 10G, 25G, 40G, 100G, 200G low speed optical module, but the influence is very large on 800G, 1600G high speed optical module. SUMMARY

[0003] The utility model solves the technical problem that a high speed cable through type welding upper and lower cover separation type fixed structure and optical module are provided to overcome the above-mentioned deficiencies in the prior art.

[0004] The technical scheme for solving the above technical problem of the utility model is as follows:

[0005] A high speed cable through type welding upper and lower cover separation type fixed structure, comprising: a PCB board, at least one ground base is fixed on the PCB board along the length direction thereof, one upper cover is fixed on each base, a plurality of compartments that are distributed in a row and independent of each other are arranged on the base in the capping area of the upper cover, a limiting hole that is communicated with each compartment is formed on the side of the base away from the gold finger of the PCB board at the position corresponding to each compartment, two signal pads are arranged on the PCB board in the area surrounded by each compartment, the signal lines in the plurality of high speed cables of each high speed cable group enter the corresponding compartment through the limiting hole on each base and are welded with the signal pads, the limiting hole limits the section of the high speed cable with a protective sleeve, and the ground wire in the high speed cable is welded with the base.

[0006] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0007] Further, the section of the high speed cable in the limiting hole has a metal tin paper, a through hole that is communicated with the limiting hole is formed on the upper surface of the base in the area above the metal tin paper of each high speed cable, and a solder block that welds the base and the metal tin paper in the high speed cable is arranged in the through hole.

[0008] Further, a plurality of ground pads are arranged on the PCB board at different positions, and each base is welded with one of the ground pads on the PCB board.

[0009] Further, the upper cover is made of copper tinned, the base is made of copper tinned, and the upper cover and the base are fixed by welding.

[0010] Further, the upper cover has a slope near the side of the gold finger of the PCB.

[0011] Further, all the compartments on the base are arranged in a row along the length direction of the base, the base is provided with a gap on the side away from the gold finger of the PCB, the gap is communicated with all the limiting holes and penetrates through two adjacent sides of the base, the height of the gap is greater than the outer diameter of the ground wire, the middle region of the upper surface of the base is provided with a first groove as a ground wire welding position between the adjacent two compartments and outside the two compartments at the most edge, the first groove is communicated with the gap, and the ground wire in the high-speed cable is welded in the first groove.

[0012] Further, the upper cover has a slope near the side of the gold finger of the PCB.

[0013] Further, the upper cover has a slope near the side of the gold finger of the PCB.

[0014] Further, the upper cover has a slope near the side of the gold finger of the PCB.

[0015] Based on the above technical scheme, the utility model further provides a kind of optical module, including above-mentioned high-speed cable through type welding upper and lower cover separation type fixing structure.

[0016] The utility model has the advantages that:

[0017] 1) the fixing structure does not need to be glued, so it does not need to consider the problem of impedance increase caused by excessive glue, to ensure that it does not affect the performance of high-speed optical module;

[0018] 2) the limiting hole on the base in the scheme limits the section of the high-speed cable with protective sleeve, so that the risk of high-speed cable loosening can be reduced;

[0019] 3) the base of specific structure, and let each high-speed cable be in an independent compartment, then cooperate with upper cover, so that the interference between signal lines in high-speed cable can be effectively avoided;

[0020] 4) The metal tin paper in the high-speed cable is welded with the base by the soldering block, which further effectively reduces the risk of loosening of the high-speed cable and reduces the interference of signals in adjacent high-speed cables;

[0021] 5) The side of the upper cover away from the limiting hole has a slope, when a PCB has multiple bases adjacent to each other along the length direction of the same face, the slope on the upper cover facilitates the high-speed cable group in the front base to pass above, reducing the bending angle of the high-speed cable group;

[0022] 6) The cooperation of the groove on the base and the protrusion on the upper cover can be used as a welding point, and can also position the upper cover and the base. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure diagram of the high-speed cable through-welding upper and lower cover separated fixing structure in the utility model.

[0024] Figure 2 It is a partial structure diagram of the high-speed cable through-welding upper and lower cover separated fixing structure in the utility model.

[0025] Figure 3 It is a partial enlarged view of Figure 2 .

[0026] Figure 4 It is a structure diagram of the base in the utility model.

[0027] Figure 5 It is a structure diagram of the upper cover in the utility model.

[0028] Figure 6 It is a structure diagram of Figure 1 after removing a base and an upper cover.

[0029] In the drawings, the components represented by each reference numeral are listed as follows:

[0030] 1, PCB, 110, signal pad, 120, ground pad, 2, base, 210, compartment, 220, first groove, 230, inclined surface, 240, second groove, 250, third groove, 260, limiting hole, 270, gap, 280, through hole, 3, upper cover, 310, slope, 320, first protrusion, 330, second protrusion, 340, third protrusion, 4, high-speed cable, 410, signal line, 420, ground line, 430, metal tin paper, 5, soldering block. DETAILED DESCRIPTION

[0031] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not to limit the scope of the utility model.

[0032] Example 1

[0033] like Figures 1-6 As shown, a high-speed cable through-welding upper and lower cover separation fixing structure includes: PCB board 1, at least one grounded base 2 fixed on PCB board 1, that is, the base 2 is made of metal, the bases 2 on PCB board 1 are arranged in rows along the length direction of PCB board 1, since the multiple high-speed cables 4 of the high-speed cable group are arranged in rows along the width direction of PCB board 1, the length direction of the base 2 is distributed along the width direction of PCB board 1, and an upper cover 3 is fixed on each base 2, the cooperation of the base 2 and the upper cover 3 forms a shielding cover;

[0034] The base 2 has multiple independent compartments 210 arranged in rows in the sealing area of ​​the upper cover 3. The compartments 210 penetrate the upper and lower surfaces of the base 2. The multiple compartments 210 on the base 2 are preferably arranged in rows along the width direction of the PCB board 1. On the same side end face of the base 2, a limiting hole 260 is opened at each compartment 210, which is connected to it. That is, the number of limiting holes 260 on each base 2 is the same as the number of compartments 210. For example, if each high-speed cable group has four or six high-speed cables 4, then the base 2 adapted to the high-speed cable group has four or six compartments 210. Similarly, the number of limiting holes 260 on each base 2 is also four or six. All the limiting holes 260 on each base 2 are on the same side. There are two signal pads 110 in the area enclosed by each compartment 210 on the PCB board 1.

[0035] Each high-speed cable group has multiple high-speed cables 4, and the signal lines 410 of each cable enter the corresponding compartment 210 through the limiting holes 260 on one of the bases 2. After being bent and stripped of the protective layer (insulating medium), they are soldered to the signal pads 110. For example, if each high-speed cable group has four or six high-speed cables 4, then the base 2 adapted to the high-speed cable group has four or six limiting holes 260 and four or six compartments 210. The signal lines 410 of the four or six high-speed cables 4... The 0 then enters one of the four or six limiting holes 260 on the base 2, and then continues to enter one of the four or six compartments 210. The signal line 410 is first bent and then the protective layer (insulating medium) is stripped before being soldered to the signal pad 110. The limiting holes 260 limit the section of the high-speed cable 4 with the protective sleeve. The ground wire 420 in the high-speed cable 4 is soldered to the base 2. Since the base 2 is grounded, the ground wire 420 in the high-speed cable 4 is also grounded when the ground wire 420 is soldered to the base 2.

[0036] Example 2

[0037] like Figure 2 ,Figure 3 , Figure 4 , Figure 6 As shown, this embodiment is a further improvement on embodiment 1, as detailed below:

[0038] The section of the high-speed cable 4 within the limiting hole 260 has metal foil 430. On the upper surface of the base 2, a through hole 280 communicating with the limiting hole 260 is opened in the area above the metal foil 430 in each high-speed cable 4. A solder block 5 is inserted into the through hole 280 to weld the base 2 to the metal foil 430 in the high-speed cable 4. The metal foil 430 in the high-speed cable 4 is welded to the base 2 as a whole by the solder block 5, which effectively reduces the risk of the high-speed cable 4 becoming loose and reduces signal interference in adjacent high-speed cables.

[0039] Example 3

[0040] like Figure 2 , Figure 6 As shown, this embodiment is a further improvement on embodiment 1 or 2, as detailed below:

[0041] The PCB board 1 has multiple grounding pads 120 at different locations. Each base 2 is soldered to one of the grounding pads 120 on the PCB board 1 to facilitate the grounding of the base 2.

[0042] Example 4

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment is a further improvement on embodiment 1, 2, or 3, as detailed below:

[0044] The top cover 3 is preferably made of tin-plated copper, and the base 2 is preferably made of tin-plated copper. Of course, in actual application, other materials are not excluded. Since the base 2 is made of metal and the top cover 3 is also made of metal, the top cover 3 and the base 2 are preferably fixed by welding.

[0045] Example 5

[0046] like Figure 1 As shown, this embodiment is a further improvement on any one of embodiments 1 to 4, as detailed below:

[0047] The top cover 3 has a ramp 310 on the side of the PCB board 1 near the gold finger. When a PCB board 1 has multiple adjacent bases 2 along its length on the same surface, the ramp 310 on the top cover 3 facilitates the passage of the high-speed cable group over another base 2 in front of it, reducing the bending angle of the high-speed cable group.

[0048] Embodiment 6

[0049] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 This embodiment is a further improvement on the basis of Embodiment 5, as follows:

[0050] All compartments 210 on the base 2 are arranged in rows along the length direction thereof.

[0051] Further: the base 2 is provided with a slit 270 on the side away from the gold fingers of the PCB 1, which connects all the limiting holes 260 and penetrates through the two adjacent sides of the end face where the limiting holes 260 are provided, the height of the slit 270 is greater than the outer diameter of the ground wire 420, and the middle region of the upper surface of the base 2 is provided with a first recess 220 as a ground wire welding position between the two adjacent compartments 210 and outside the two outermost compartments 210, the first recess 220 is in communication with the slit 270, when the high-speed cable 4 is inserted into the compartment 210 through the limiting hole 260, the ground wire 420 in the high-speed cable 4 enters the first recess 220 through the slit 270, and the ground wire 420 in the high-speed cable 4 is welded in the first recess 220.

[0052] Embodiment 7

[0053] As shown in Figure 2 , Figure 3 , Figure 4 This embodiment is a further improvement on the basis of Embodiment 6, as follows:

[0054] The lower surface of the upper cover 3 is provided with a first protrusion 320 corresponding to each first recess 220, which can be used as a welding position of the upper cover 3 and the base 2, and on the other hand, the first protrusion 320 cooperates with the first recess 220 to position the upper cover 3 and the base 2.

[0055] The middle region of the upper surface of the base 2 is provided with a slope 230 on the side close to the gold fingers of the PCB 1, the slope 230 corresponds to the slope 310, and a second recess 240 as an upper cover welding position is provided on the slope 230 between the two adjacent compartments 210 and outside the two outermost compartments 210, the two ends of the second recess 240 respectively extend to the outside of the slope 230, and the lower surface of the upper cover 3 is provided with a second protrusion 330 corresponding to each second recess 240, which can be used as a welding position of the upper cover 3 and the base 2, and on the other hand, the second protrusion 330 cooperates with the second recess 240 to position the upper cover 3 and the base 2.

[0056] The upper cover 3 has a third protrusion 340 on the lower surface in the area corresponding to the slope 310, the second protrusion 330 is between the first protrusion 320 and the third protrusion 340, the upper surface of the base 2 has a third recess 250 accommodating the third protrusion 340, the length of the third protrusion 340 and the third recess 250 covers all the compartments 210 on the base 2, the third protrusion 340 can be used as a welding point between the upper cover 3 and the base 2, and the third protrusion 340 cooperates with the third recess 250 to position the upper cover 3 and the base 2.

[0057] Embodiment 8

[0058] A kind of optical module, including the high-speed cable through type welding upper and lower cover separation type fixing structure described in any one of embodiments 1-7.

[0059] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A high-speed cable through-welded upper and lower cover separate fixing structure, characterized in that, include: A PCB board (1) has at least one grounded base (2) fixed along its length. Each base (2) has a top cover (3) fixed on it. The base (2) has multiple rows of independent compartments (210) in the sealing area of ​​the top cover (3). On the side of the base (2) away from the gold fingers of the PCB board (1), a limiting hole (260) is opened at each compartment (210) and connected to it. Each compartment (210) has two signal pads (110) within its enclosed area. The signal lines (410) of the multiple high-speed cables (4) in each high-speed cable group enter the corresponding compartment (210) through the limiting holes (260) on one of the bases (2) and are soldered to the signal pads (110). The limiting holes (260) limit the sections of the high-speed cables (4) with protective sleeves. The ground wire (420) of the high-speed cables (4) is soldered to the base (2).

2. The high-speed cable through-type welded upper and lower cover separate fixing structure according to claim 1, characterized in that, The high-speed cable (4) has metal foil (430) in the section within the limiting hole (260). On the upper surface of the base (2), a through hole (280) communicating with the limiting hole (260) is opened in the area above the metal foil (430) in each high-speed cable (4). A solder block (5) is inserted into the through hole (280) to weld the base (2) to the metal foil (430) in the high-speed cable (4).

3. The high-speed cable through-type welded upper and lower cover separate fixing structure according to claim 1, characterized in that, The PCB board (1) has multiple grounding pads (120) at different locations, and each base (2) is soldered to one of the grounding pads (120) on the PCB board (1).

4. The high-speed cable through-type welded upper and lower cover separate fixing structure according to claim 1, characterized in that, The top cover (3) is made of tin-plated copper, the base (2) is made of tin-plated copper, and the top cover (3) and the base (2) are fixed together by welding.

5. A high-speed cable through-type welded upper and lower cover separate fixing structure according to any one of claims 1 to 4, characterized in that, The top cover (3) has a ramp (310) on the side of the gold finger of the PCB board (1).

6. The high-speed cable through-type welded upper and lower cover separate fixing structure according to claim 1, characterized in that, All the compartments (210) on the base (2) are arranged in a row along its length. The base (2) has a gap (270) on the side away from the gold fingers of the PCB board (1) that connects all the limiting holes (260) and passes through two adjacent sides. The height of the gap (270) is greater than the outer diameter of the ground wire (420). The middle area of ​​the upper surface of the base (2) has a first groove (220) as a ground wire welding position between two adjacent compartments (210) and outside the two outermost compartments (210). The first groove (220) is connected to the gap (270). The ground wire (420) in the high-speed cable (4) is welded in the first groove (220).

7. The high-speed cable through-type welded upper and lower cover separate fixing structure according to claim 6, characterized in that, The lower surface of the cover (3) has a first protrusion (320) extending into the first groove (220) at each corresponding first groove (220).

8. The high-speed cable through-welded upper and lower cover separate fixing structure according to claim 7, characterized in that, The upper surface of the base (2) has a slope (230) in the middle area near the gold finger of the PCB board (1). The slope (230) between two adjacent compartments (210) and on the outer side of the two outermost compartments (210) is provided as a second groove (240) for welding position of the upper cover. The two ends of the second groove (240) extend to the outside of the slope (230). The lower surface of the upper cover (3) has a second protrusion (330) that extends into the second groove (240) at each corresponding second groove (240).

9. The high-speed cable through-type welded upper and lower cover separate fixing structure according to claim 8, characterized in that, The lower surface of the upper cover (3) has a third protrusion (340) in the area corresponding to the slope (310), the second protrusion (330) is located between the first protrusion (320) and the third protrusion (340), the upper surface of the base (2) has a third groove (250) for accommodating the third protrusion (340), and the lengths of the third protrusion (340) and the third groove (250) both cover all the compartments (210) on the base (2).

10. An optical module, characterized in that, Includes the high-speed cable through-welded upper and lower cover separate fixing structure as described in any one of claims 1 to 9.

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