A highly integrated through-hole circular active connector optical cable assembly

Abstract

This invention belongs to the field of optical communication technology, and particularly relates to a highly integrated through-hole circular active connector optical cable assembly. It includes a modified connector, a housing connected to the assembly end of the modified connector, a printed circuit board assembly and an optical cable assembly fixedly disposed inside the housing. The printed circuit board assembly includes a rigid printed circuit board one that is soldered to the pin contacts in the modified connector. Flexible printed circuit boards are connected to both ends of the rigid printed circuit board one. In this highly integrated through-hole circular active connector optical cable assembly, the photoelectric / electro-optical conversion chips mounted on the rigid printed circuit board two are vertically emitting and receiving light. The photoelectric / electro-optical conversion chips are coupled using lenses. On the one hand, the lenses protect the photoelectric / electro-optical conversion chips and gold wires; on the other hand, they rotate the optical path by 90° to be parallel to the direction of the rigid printed circuit board two, ensuring that the centerline of the optical cable and the active electrical connector optical cable assembly are on the same centerline, achieving coaxial fiber output.

Description

Technical Field

[0001] This invention belongs to the field of optical communication technology, and particularly relates to a highly integrated through-hole circular active connector optical cable assembly. Background Technology

[0002] Active electrical connector fiber optic assemblies typically refer to connector assemblies that integrate photoelectric / electro-optic conversion modules into traditional electrical connectors and transmit signals via optical fibers. They possess the connection reliability of electrical connectors and eliminate the problem of end-face contamination during insertion and removal, while retaining the advantages of fiber optic transmission such as high bandwidth, low loss, lightweight design, and resistance to electromagnetic interference. Furthermore, no additional photoelectric / electro-optic conversion circuitry is required within the connecting device. Therefore, they are widely used in communication equipment in aerospace, missile-borne, airborne, shipborne, ground-based vehicle-mounted, and missile-borne applications.

[0003] The J599 III series connectors are mature circular electrical connector products. Their main features include a three-threaded quick-locking and unlocking mechanism, a five-key structure for blind mating and preventing incorrect mating, and waterproof / vapor-proof connection capabilities. Integrating an optoelectronic / electro-optical conversion module into this series of connectors presents the following design challenges:

[0004] 1. Since the pin contacts in the J599 III series connectors are used to transmit electrical signals, it is necessary to electrically interconnect the high-density distributed pin contacts with the optoelectronic / electro-optical conversion module;

[0005] 2. Military products require active electrical connectors and optical cable assemblies to have dual backup functionality;

[0006] 3. Considering the large space required for optical cable bends and the generally stringent requirements for connector installation space in military communication equipment, the overall size of the active electrical connector optical cable assembly should be as short as possible after integrating the optoelectronic / electro-optical conversion module into the J599 III series connector. Summary of the Invention

[0007] To address the problems in the prior art, the present invention proposes the following technical solution:

[0008] A highly integrated through-hole circular active connector optical cable assembly includes a modified connector, a housing connected to the assembly end of the modified connector, a printed circuit board assembly and an optical cable assembly fixedly disposed inside the housing. The printed circuit board assembly includes a rigid printed circuit board one that is welded to the pin contacts in the modified connector. Both ends of the rigid printed circuit board one are connected to flexible printed circuit boards. The flexible printed circuit board is bent outward from the middle and connected to a rigid printed circuit board two at its end. A molybdenum copper block is embedded in the rigid printed circuit board two. The opposite ends of the molybdenum copper block are flush with the surface of the rigid printed circuit board two and have a photoelectric / electro-optical conversion chip attached to them. A photoelectric / electro-optical conversion circuit is disposed on the rigid printed circuit board two. The photoelectric / electro-optical conversion chip and the rigid printed circuit board two are electrically interconnected by gold wire bonding. A lens covering the photoelectric / electro-optical conversion chip is disposed on the rigid printed circuit board two, and an optical interface is disposed on the lens.

[0009] The optical cable assembly includes a tailstock from which multiple sets of optical cables are led out. Each set of optical cables is equipped with an MT connector at its end. The MT connector is inserted into the corresponding optical interface on the lens. The tail end of the tailstock passes through the housing and extends to the outside of the housing.

[0010] As a preferred embodiment of the above technical solution, the rigid printed circuit board has a number of solder holes matching the number of pin contacts, and the pin contacts in the modified connector pass through the solder holes and are soldered to the rigid printed circuit board.

[0011] As a preferred embodiment of the above technical solution, the opposite ends of the molybdenum-copper blocks protrude from the surface of the rigid printed circuit board and overlap with the outer casing through a thermal pad.

[0012] As a preferred embodiment of the above technical solution, the outer shell includes an upper shell and a lower shell that are relatively distributed, and the upper shell and the lower shell are assembled together by screws to form a complete outer shell.

[0013] As a preferred embodiment of the above technical solution, the modified connector has a housing, the assembly end of the housing extends axially to form a cylindrical body, an annular buckle is provided on the outer ring sidewall of the cylindrical body, and an annular groove is provided on the inner ring sidewall of the housing, the annular buckle and the annular groove being adapted to each other.

[0014] A milled flat key is provided on the outer ring sidewall of the cylinder, and a milled flat key is provided on the inner ring sidewall of the outer shell. The milled flat key is adapted to the milled flat key. The annular groove is distributed on the upper shell and the lower shell, and the milled flat key is distributed on the upper shell and the lower shell.

[0015] As a preferred embodiment of the above technical solution, it also includes a support frame assembly, which includes a support frame that is threadedly assembled with the lower shell. Screw mounting bosses are provided on both the upper and lower end faces of the support frame. The two rigid printed circuit boards are respectively distributed on the upper and lower sides of the support frame and are assembled with the corresponding screw mounting bosses by screws.

[0016] As a preferred embodiment of the above technical solution, the support frame assembly further includes an MT support shell, an MT support plate, and a side cover plate sequentially distributed at the tail end of the support frame. The MT support shell and the side cover plate are both assembled to the support frame by screws, and there is a gap between the MT support shell and the side cover plate.

[0017] An MT support plate is movably inserted into the MT support shell, and a spring is provided between the MT support plate and the side cover plate.

[0018] As a preferred embodiment of the above technical solution, the support frame assembly further includes a lens support plate 1 respectively assembled at the upper and lower ends of the support frame. The lens support plate 1 is fitted with a baffle by screws. There is a gap 2 between the lens support plate 1 and the baffle. The lens support plate 2 is disposed in the gap 2. A spring 2 is disposed between one end of the lens support plate 2 and the lens support plate 1. The other end of the lens support plate 2 movably passes through an opening on the baffle.

[0019] The lens support plate 2 has a plurality of protrusions on the end face opposite to the printed circuit board assembly, and a guide groove for matching MT connectors is formed between two adjacent protrusions.

[0020] As a preferred embodiment of the above technical solution, an annular buckle 2 is provided on the inner ring sidewall of the outer shell, and an annular groove 2 is provided on the outer ring sidewall of the tailstock, with the annular buckle 2 and the annular groove 2 being adapted to each other.

[0021] The inner ring sidewall of the outer shell is provided with a milled flat key position three, and the outer ring sidewall of the tailstock is provided with a milled flat key position four, the milled flat key position three and the milled flat key position four are adapted to each other; the annular buckle two is distributed on the upper shell and the lower shell, and the milled flat key position three is distributed on the upper shell and the lower shell.

[0022] As a preferred embodiment of the above technical solution, the portion of the tailstock located outside the housing is fitted with two oppositely distributed optical cable reinforcing plates, which are assembled to the housing by screws;

[0023] Each of the aforementioned optical cable reinforcing plates is connected to the upper shell and the lower shell respectively.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. A highly integrated through-hole circular active connector optical cable assembly in this technical solution uses the modified connector as an electrical interface. The pin contacts inside the cavity pass through solder holes and are soldered to a rigid printed circuit board. A photoelectric / electro-optical conversion chip is attached to the surface of a rigid printed circuit board with a molybdenum copper block. A photoelectric / electro-optical conversion circuit is provided on the rigid printed circuit board. The photoelectric / electro-optical conversion chip and the rigid printed circuit board are electrically interconnected by gold wire bonding. Then, lens coupling is performed, and the MT connector, which is inserted into the optical interface on the lens, leads out the optical signal through the optical cable.

[0026] Since the photoelectric / electro-optical conversion chips mounted on the rigid printed circuit board are all vertically emitting and receiving light, the photoelectric / electro-optical conversion chips are coupled with lenses. On the one hand, the lenses protect the photoelectric / electro-optical conversion chips and gold wires, and on the other hand, they can rotate the optical path by 90° to be parallel to the direction of the rigid printed circuit board, ensuring that the center line of the optical cable is on the same center line as the active electrical connector optical cable assembly, thus achieving coaxial fiber output. The lenses can be installed in conjunction with MT connectors, thereby enabling the optical signal to be led out through the optical cable during the operation of the active electrical connector optical cable assembly, while shortening the length of the internal adapter fiber.

[0027] 2. The photoelectric / electro-optical conversion module in this technical solution is implemented using a printed circuit board assembly, specifically composed of three rigid printed circuit boards and two flexible printed circuit boards. The printed circuit board assembly has a butterfly-shaped structure. The first rigid printed circuit board is the middle sub-board, which can be inserted into the modified connector for soldering and fixing. The two left and right rigid printed circuit boards adopt the same design, each equipped with a photoelectric / electro-optical conversion circuit. During assembly, the flexible printed circuit boards are installed by bending them. The photoelectric / electro-optical conversion circuits on the two rigid printed circuit boards operate independently with power supply, serving as backups for each other. This addresses the requirement of military products for active electrical connector optical cable assemblies to have dual backup functionality. Furthermore, the design of the printed circuit board assembly in this technical solution can greatly shorten the size of the printed circuit boards and improve the space utilization rate within the circular cavity.

[0028] 3. The highly integrated through-hole circular active connector optical cable assembly in this technical solution can compress the length of the active electrical connector optical cable assembly to about 60mm. It has a compact structure, is easy to install, and is suitable for various space-constrained applications. Attached Figure Description

[0029] Figure 1 The diagram shown is an exploded view of a highly integrated through-hole circular active connector optical cable assembly according to Embodiment 1.

[0030] Figure 2 The diagram shown is a structural schematic of the modified connector in Embodiment 1;

[0031] Figure 3 The diagram shown is a schematic representation of the printed circuit board assembly in Embodiment 1;

[0032] Figure 4 What is shown is Figure 3 A cross-sectional view of the printed circuit board assembly.

[0033] Figure 5 The diagram shown is a structural schematic of the optical cable assembly in Embodiment 1;

[0034] Figure 6 The diagram shown is a structural schematic of the support frame assembly in Embodiment 1;

[0035] Figure 7 The diagram shown is an exploded view of the support frame assembly in Embodiment 1;

[0036] Figure 8 The diagram shown is a physical structural diagram of a highly integrated through-hole circular active connector optical cable assembly according to Embodiment 1.

[0037] Reference numerals: Modified connector 1; Housing 11; Printed circuit board assembly 2; Rigid printed circuit board one 21; Flexible printed circuit board 22; Rigid printed circuit board two 23; Molybdenum copper block 24; Lens 25; Optoelectronic / electro-optical conversion chip 26; Support frame assembly 3; Support frame 31; MT support shell 32; MT support plate 33; Spring one 34; Side cover plate 35; Lens support plate one 36; Spring two 37; Baffle 38; Lens support plate two 39; Upper shell 4; Lower shell 5; Optical cable assembly 6; MT connector 61; Tailstock 62; Optical cable reinforcing plate 7. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0039] Example 1

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the modified connector 1 in this embodiment is a J599III series connector, a highly integrated through-hole circular active connector optical cable assembly, including the modified connector 1, a housing connected to the assembly end of the modified connector 1, a printed circuit board assembly 2 and an optical cable assembly 6 fixedly disposed inside the housing. The printed circuit board assembly 2 includes a rigid printed circuit board one 21 that is soldered to the pin contacts in the modified connector 1. Both ends of the rigid printed circuit board one 21 are connected to flexible printed circuit boards 22. After the middle of the flexible printed circuit board 22 is bent outward, the end is connected to a rigid printed circuit board two 23. Molybdenum copper blocks 24 are embedded on the rigid printed circuit board two 23. More specifically, each rigid printed circuit board two 23 has two rectangular holes, and four molybdenum copper blocks 24 are embedded in the corresponding rectangular holes. The ends of the molybdenum copper blocks 24 are positioned opposite each other and are connected to the rigid printed circuit board two 23. 3. A photoelectric / electro-optical conversion chip 26 is attached to the surface of the rigid printed circuit board 23. The rigid printed circuit board 23 is equipped with a photoelectric / electro-optical conversion circuit, which can realize the conversion of externally input optical signals into electrical signals for transmission or the conversion of externally input electrical signals into optical signals for transmission. More specifically, the rigid printed circuit board 23 is equipped with 8 photoelectric conversion channels and 8 electro-optic conversion channels. The photoelectric / electro-optical conversion chip 26 and the rigid printed circuit board 23 are electrically interconnected by gold wire bonding. The rigid printed circuit board 23 is equipped with a lens 25 covering the photoelectric / electro-optical conversion chip 26. The lens 25 is equipped with an optical interface. Since the photoelectric / electro-optical conversion chip 26 emits light vertically (or receives light vertically), the function of the lens 25 is to convert the optical path of the photoelectric / electro-optical conversion chip 26 by 90°, so that the fiber output direction of the optical cable is on the same straight line as the center line of the modified connector 1.

[0041] The optical cable assembly 6 includes a tailstock 62 from which multiple sets of optical cables are led out. Each set of optical cables is equipped with an MT connector 61 at its end. More specifically, the optical cable assembly 6 contains 48-core optical cables, and four sets of 12-core optical cables are led out and assembled with 12-core MT connectors. The four MT connectors 61 are inserted into the corresponding optical interfaces on the four lenses 25 respectively. The tail end of the tailstock 62 passes through the outer shell and extends to the outside of the outer shell.

[0042] This technical solution presents a highly integrated through-hole circular active connector optical cable assembly. The modified connector 1 serves as the electrical interface, with its internal pin contacts passing through solder holes and soldered to a rigid printed circuit board 21. A photoelectric / electro-optical conversion chip 26 is attached to the surface of a rigid printed circuit board 23 embedded with a molybdenum copper block 24. A photoelectric / electro-optical conversion circuit is provided on the rigid printed circuit board 23. The photoelectric / electro-optical conversion chip 26 and the rigid printed circuit board 23 are electrically interconnected by gold wire bonding. Then, a lens 25 is coupled, and an MT connector 61, which is inserted into the optical interface on the lens 25, leads out the optical signal through the optical cable.

[0043] Since the photoelectric / electro-optical conversion chips 26 mounted on the rigid printed circuit board 23 are all vertically emitting and receiving light, the photoelectric / electro-optical conversion chips 26 are coupled with lenses 25. On the one hand, lenses 25 protect the photoelectric / electro-optical conversion chips 26 and the gold wires. On the other hand, they can rotate the optical path by 90° to be parallel to the direction of the rigid printed circuit board 23, ensuring that the center line of the optical cable is on the same center line as the active electrical connector optical cable assembly, thus achieving coaxial fiber output. Lenses 25 can be installed in conjunction with 12-core MT connectors 61, thereby enabling the optical signal to be led out through the optical cable during the operation of the active electrical connector optical cable assembly, while shortening the length of the internal adapter fiber.

[0044] The photoelectric / electro-optical conversion module in this technical solution is implemented using a printed circuit board assembly 2, which consists of three rigid printed circuit boards and two flexible printed circuit boards. The printed circuit board assembly 2 has a butterfly-shaped structure. The first rigid printed circuit board 21 is the middle sub-board, which can be inserted into the modified connector 1 for soldering and fixing. The two left and right rigid printed circuit boards 23 adopt the same design, and each has a photoelectric / electro-optical conversion circuit. During assembly, it is installed by bending the flexible printed circuit board 22. The photoelectric / electro-optical conversion circuits on the two rigid printed circuit boards 23 are powered independently and serve as backups for each other, which solves the requirement of active electrical connector optical cable assemblies to have dual backup functions in military products. Moreover, the design of the printed circuit board assembly 2 in this technical solution can greatly shorten the size of the printed circuit board and improve the space utilization rate of the circular cavity.

[0045] This technical solution presents a highly integrated through-hole circular active connector optical cable assembly, which can compress the length of the active electrical connector optical cable assembly to about 60mm. It has a compact structure, is easy to install, and is suitable for various space-constrained applications.

[0046] like Figure 2 , Figure 3 As shown, the rigid printed circuit board 21 has a number of solder holes matching the number of pin contacts. In this embodiment, there are 76 pin contacts. The pin contacts in the modified connector 1 pass through the solder holes and are soldered to the rigid printed circuit board 21, which increases the soldering area between the pin contacts and the rigid printed circuit board 21, improves the soldering effect, and ensures the stability of the assembly between the modified connector 1 and the printed circuit board assembly 2.

[0047] Since the photoelectric / electro-optical conversion chip 26 is the main heat source when the active electrical connector optical cable assembly is working, and the photoelectric / electro-optical conversion chip 26 is very sensitive to temperature, especially high temperature environments may cause the chip to malfunction or even fail. Therefore, if Figure 3 , Figure 4 As shown, the opposite ends of the molybdenum copper block 24 protrude from the surface of the rigid printed circuit board 23 and overlap with the outer casing through a thermal pad.

[0048] Heat dissipation is achieved by partially embedding molybdenum copper blocks 24 in the printed circuit board assembly 2. The molybdenum copper blocks 24 have good thermal conductivity. Rectangular holes are made in the rigid printed circuit board 23, and molybdenum copper blocks 24 of appropriate size are embedded. One end of the embedded molybdenum copper blocks 24 is flush with the rigid printed circuit board 23, and the photoelectric / electro-optical conversion chip 26 is mounted on its surface. The other end of the molybdenum copper blocks 24 protrudes from the surface of the rigid printed circuit board 23 and overlaps with the outer shell through a thermal pad. This allows the heat generated by the photoelectric / electro-optical conversion chip 26 during operation to be quickly conducted to the upper shell 4 and the lower shell 5 for heat dissipation, ensuring the product can be used in extreme high-temperature environments and meeting the requirement that the photoelectric / electro-optical conversion module has good heat dissipation capabilities.

[0049] To improve ease of assembly, the outer casing is designed as separate parts, specifically as follows: Figure 1 As shown, the outer shell includes an upper shell 4 and a lower shell 5 that are distributed opposite to each other. The upper shell 4 and the lower shell 5 are assembled together by screws to form a complete outer shell.

[0050] like Figure 1 , Figure 2 As shown, the modified connector 1 has a housing 11, the assembly end of the housing 11 extends axially to form a cylindrical body, an annular buckle 1 is provided on the outer ring side wall of the cylindrical body, and an annular groove 1 is provided on the inner ring side wall of the housing, the annular buckle 1 and the annular groove 1 are adapted to each other; a milled flat key 1 is provided on the outer ring side wall of the cylindrical body, and a milled flat key 2 is provided on the inner ring side wall of the housing, the milled flat key 1 and the milled flat key 2 are adapted to each other; the annular groove is distributed on the upper housing 4 and the lower housing 5, and the milled flat key 2 is distributed on the upper housing 4 and the lower housing 5.

[0051] After the modified connector 1 is assembled with the housing, the annular buckle 1 and the annular groove 1 are matched to limit the axial position between the modified connector 1 and the housing, preventing axial displacement between them; the milled flat key 1 and the milled flat key 2 are matched to limit the circumferential position between the modified connector 1 and the housing, preventing rotation between them. In this technical solution, the modified connector 1 and the housing are connected by the annular buckle 1 and the annular groove 1, and the milled flat key 1 and the milled flat key 2. On the one hand, this restricts the degrees of freedom in all directions after the components are assembled, preventing relative displacement between the components and ensuring the stability of the position between the modified connector 1 and the housing; on the other hand, it ensures the sealing between the modified connector 1 and the housing. This solves the problem of designing a fixing method for an integrated optoelectronic / electro-optical conversion module on the cylindrical wall of the J599 III series connector housing.

[0052] Furthermore, to ensure the stable assembly of the internal structure of the active connector optical cable assembly and guarantee reliable installation, such as... Figure 6 , Figure 7As shown, a highly integrated through-hole circular active connector optical cable assembly also includes a support frame assembly 3. The support frame assembly 3 includes a support frame 31 that is threadedly assembled with the lower shell 5. Screw mounting bosses are provided on both the upper and lower end faces of the support frame 31. Two rigid printed circuit boards 23 are respectively distributed on the upper and lower sides of the support frame 31 and are assembled with the corresponding screw mounting bosses by screws.

[0053] The printed circuit board assembly 2 is fixed by the support frame assembly 3, which is fixed on the lower shell 5, thereby preventing the flexible printed circuit board 22 in the printed circuit board assembly 2 from being displaced and subjected to force, and ensuring the fixed assembly of the printed circuit board assembly 2 and the optical cable assembly 6 inside the shell.

[0054] Regarding the fixing of the MT connector 61 position in the optical cable assembly 6, such as Figure 6 , Figure 7 As shown, the support frame assembly 3 also includes an MT support shell 32, an MT support plate 33, and a side cover plate 35, which are sequentially distributed at the tail end of the support frame 31. The MT support shell 32 and the side cover plate 35 are both assembled to the support frame 31 by screws, and there is a gap between the MT support shell 32 and the side cover plate 35. The MT support shell 32 is movably inserted into the MT support plate 33, and a spring 34 is provided between the MT support plate 33 and the side cover plate 35.

[0055] When installing this part of the support frame assembly 3, first fix the MT support shell 32 to the tail end of the support frame 31 with screws, insert the MT support plate 33 into the inside of the MT support shell 32, insert the spring 34, and then assemble the side cover plate 35 with the support frame 31 with screws. There is a gap between the MT support shell 32 and the side cover plate 35. The MT support plate 33 can move inside the MT support shell 32 and in the gap. Under the action of the spring 34, after the MT connector 61 and the optical interface of the lens 25 are inserted, the MT support plate 33 and the MT connector 61 are in elastic contact, which prevents the MT connector 61 from loosening.

[0056] Regarding the fixing of the lens 25 position in the support frame assembly 3, such as Figure 6 , Figure 7 As shown, the support frame assembly 3 also includes a lens support plate 36 respectively mounted on the upper and lower ends of the support frame 31. The lens support plate 36 is fitted with a baffle 38 by screws. There is a gap 2 between the lens support plate 36 and the baffle 38. A lens support plate 39 is disposed in the gap 2. A spring 37 is disposed between one end of the lens support plate 39 and the lens support plate 36. The other end of the lens support plate 39 moves through the opening on the baffle 38.

[0057] When installing this part of the support frame assembly 3, first assemble the lens support plate 36 onto the support frame 31, and then place the spring 37, the lens support plate 39, and the baffle 38 on the end face of the lens support plate 36 in sequence. The upper end of the lens support plate 39 passes through the opening on the baffle 38. The baffle 38 is assembled to the lens support plate 36 with screws. The lens support plate 39 can move vertically in the gap. Under the action of the spring 37, the lens support plate 39 makes elastic contact with the lens 25, which plays the role of vertically supporting and fixing the lens 25. At the same time, the end face of the lens support plate 39 opposite to the printed circuit board assembly 2 is provided with a number of protrusions. A guide groove for the MT connector 61 is formed between two adjacent protrusions, which provides guidance when the MT connector 61 is installed.

[0058] The support frame assembly 3 provides support and limits for the printed circuit board assembly 2 and the optical cable assembly 6, ensuring the stable assembly of the internal structure of the active connector optical cable assembly, guaranteeing reliable installation, and solving the problem that the optoelectronic / electro-optical conversion module needs to lead out the optical signal through the optical cable, and the optical cable and the optoelectronic / electro-optical conversion module need to ensure reliable connection.

[0059] To improve the stability of the assembly between the optical cable assembly 6 and the outer shell, such as Figure 1 , Figure 5 As shown, an annular buckle 2 is provided on the inner ring sidewall of the outer shell, and an annular groove 2 is provided on the outer ring sidewall of the tailstock 62. The annular buckle 2 and the annular groove 2 are adapted to each other. A milled flat key 3 is provided on the inner ring sidewall of the outer shell, and a milled flat key 4 is provided on the outer ring sidewall of the tailstock 62. The milled flat key 3 and the milled flat key 4 are adapted to each other. The annular buckle 2 is distributed on the upper shell 4 and the lower shell 5, and the milled flat key 3 is distributed on the upper shell 4 and the lower shell 5.

[0060] In the active connector optical cable assembly, the upper shell 4 and the lower shell 5 are clamped together to hold the optical cable. After assembly, the annular buckle 2 is located inside the annular groove 2 to limit the axial position between the optical cable assembly 6 and the shell, preventing displacement of the optical cable assembly 6 in the axial direction. The matching of the milled flat key 3 and the milled flat key 4 limits the circumferential position between the optical cable assembly 6 and the shell, preventing the optical cable assembly 6 from rotating.

[0061] To improve the overall strength of optical cable assembly 6, such as Figure 1 , Figure 5 As shown, the tailstock 62 located outside the outer shell is fitted with two relatively distributed optical cable reinforcing plates 7, which are assembled with the outer shell by screws; furthermore, in order to improve the stability of the assembly, each optical cable reinforcing plate 7 is connected to the upper shell 4 and the lower shell 5 respectively; the optical cable reinforcing plate 7 is fixed on the structural end face of the optical cable lead-out position, which has the function of reinforcing the optical cable assembly 6 and preventing the optical cable assembly 6 from shaking and being subjected to force.

[0062] The highly integrated through-hole circular active connector optical cable assembly in this technical solution is assembled through the following steps:

[0063] 1. Insert the plug-in contacts on the modified connector 1 into the solder holes on the rigid printed circuit board 21 and perform soldering.

[0064] 2. Place the support frame assembly 3 between the two rigid printed circuit boards 23, with the lens support plate 29 abutting against the lens 25, and then assemble the rigid printed circuit board 23 with the screw mounting boss on the support frame 31 using screws.

[0065] 3. Connect the MT connector 61 in the optical cable assembly 6 to the optical interface on the lens 25;

[0066] 4. Assemble the support frame 31 to the lower shell 5 using screws;

[0067] 5. Position the upper shell 4 and the lower shell 5 opposite each other, with the head end snapped into the shell 11 and the tail end snapped into the tail seat 62, and assemble the upper shell 4 and the lower shell 5 with screws.

[0068] 6. Install the optical cable reinforcing plate 7 on the tailstock 62, and then assemble it with the upper shell 4 and the lower shell 5 by screws.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A highly integrated through-hole circular active connector optical cable assembly, comprising a modified connector (1), a housing connected to the assembly end of the modified connector (1), a printed circuit board assembly (2) fixedly disposed inside the housing, and an optical cable assembly (6), characterized in that, The printed circuit board assembly (2) includes a rigid printed circuit board one (21) that is welded to the pin contacts in the modified connector (1). Both ends of the rigid printed circuit board one (21) are connected to flexible printed circuit boards (22). The flexible printed circuit board (22) is bent outward in the middle and connected to a rigid printed circuit board two (23) at its end. A molybdenum copper block (24) is embedded on the rigid printed circuit board two (23). The opposite end of the molybdenum copper block (24) is flush with the surface of the rigid printed circuit board two (23) and has a photoelectric / electro-optical conversion chip (26) attached to it. A photoelectric / electro-optical conversion circuit is provided on the rigid printed circuit board two (23). The photoelectric / electro-optical conversion chip (26) and the rigid printed circuit board two (23) are electrically interconnected by gold wire bonding. A lens (25) covering the photoelectric / electro-optical conversion chip (26) is provided on the rigid printed circuit board two (23). An optical interface is provided on the lens (25). The optical cable assembly (6) includes a tailstock (62) from which multiple optical cables are led out. Each optical cable is equipped with an MT connector (61) at its end. The MT connector (61) is inserted into the corresponding optical interface on the lens (25). The tail end of the tailstock (62) passes through the outer shell and extends to the outside of the outer shell.

2. The highly integrated through-hole circular active connector optical cable assembly according to claim 1, characterized in that, The rigid printed circuit board (21) has a number of solder holes matching the number of pin contacts. The pin contacts in the modified connector (1) pass through the solder holes and are soldered to the rigid printed circuit board (21).

3. The highly integrated through-hole circular active connector optical cable assembly according to claim 1, characterized in that, The opposite ends of the molybdenum copper block (24) protrude from the surface of the rigid printed circuit board (23) and overlap with the outer shell through a thermal pad.

4. The highly integrated through-hole circular active connector optical cable assembly according to claim 1, characterized in that, The outer shell includes an upper shell (4) and a lower shell (5) that are distributed opposite to each other, and the upper shell (4) and the lower shell (5) are assembled together by screws to form a complete outer shell.

5. The highly integrated through-hole circular active connector optical cable assembly according to claim 4, characterized in that, The modified connector (1) has a housing (11), the assembly end of the housing (11) extends axially to form a cylindrical body, an annular buckle is provided on the outer ring side wall of the cylindrical body, and an annular groove is provided on the inner ring side wall of the housing, the annular buckle and the annular groove are adapted to each other. A milling flat key is provided on the outer ring sidewall of the cylinder, and a milling flat key is provided on the inner ring sidewall of the outer shell. The milling flat key is adapted to the milling flat key. The annular groove is distributed on the upper shell (4) and the lower shell (5), and the milling flat key is distributed on the upper shell (4) and the lower shell (5).

6. The highly integrated through-hole circular active connector optical cable assembly according to claim 4, characterized in that, It also includes a support frame assembly (3), which includes a support frame (31) that is threadedly assembled with the lower shell (5). The upper and lower end faces of the support frame (31) are provided with screw mounting bosses. The two rigid printed circuit boards (23) are respectively distributed on the upper and lower sides of the support frame (31) and are assembled with the corresponding screw mounting bosses by screws.

7. A highly integrated through-hole circular active connector optical cable assembly according to claim 6, characterized in that, The support frame assembly (3) further includes an MT support shell (32), an MT support plate (33), and a side cover plate (35) sequentially distributed at the tail end of the support frame (31). The MT support shell (32) and the side cover plate (35) are assembled to the support frame (31) by screws, and there is a gap between the MT support shell (32) and the side cover plate (35). An MT support plate (33) is movably inserted into the MT support shell (32), and a spring (34) is provided between the MT support plate (33) and the side cover plate (35).

8. A highly integrated through-hole circular active connector optical cable assembly according to claim 7, characterized in that, The support frame assembly (3) further includes a lens support plate (36) respectively assembled at the upper and lower ends of the support frame (31). The lens support plate (36) is fitted with a baffle (38) by screws. There is a gap between the lens support plate (36) and the baffle (38). A lens support plate (39) is provided in the gap. A spring (37) is provided between one end of the lens support plate (39) and the lens support plate (36). The other end of the lens support plate (39) movably passes through the opening on the baffle (38). The lens support plate 2 (39) has a number of protrusions on the end face opposite to the printed circuit board assembly (2), and a guide groove for matching MT connector (61) is formed between two adjacent protrusions.

9. A highly integrated through-hole circular active connector optical cable assembly according to claim 4, characterized in that, The inner ring sidewall of the outer shell is provided with a second annular buckle, and the outer ring sidewall of the tailstock (62) is provided with a second annular groove. The second annular buckle and the second annular groove are adapted to each other. The inner ring sidewall of the outer shell is provided with a milled flat key three, and the outer ring sidewall of the tailstock (62) is provided with a milled flat key four. The milled flat key three and the milled flat key four are adapted to each other. The annular buckle two is distributed on the upper shell (4) and the lower shell (5), and the milled flat key three is distributed on the upper shell (4) and the lower shell (5).

10. A highly integrated through-hole circular active connector optical cable assembly according to claim 4, characterized in that, The tailstock (62) located outside the outer shell is fitted with two oppositely distributed optical cable reinforcing plates (7), which are assembled to the outer shell by screws; Each of the optical cable reinforcing plates (7) is connected to the upper shell (4) and the lower shell (5) respectively.

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