A connector for hybrid optical and electrical signals

Abstract

The application discloses a kind of photoelectric signal mixed connectors, comprising: elbow module, including elbow shell and its internal sealed PCB board;Needle seat connection module, including precast needle seat and the periphery of which is arranged with several second connecting rods that are electrically connected with PCB board, precast needle seat is internally fixed with second optical fiber head that is optically connected with PCB board;Hole seat connection module, including flange hole seat and its external sleeve flange shell, internally movably sleeve first optical fiber head, and the periphery of flange hole seat is provided with several first connecting rods;Connection auxiliary module is used to assist first optical fiber head and second optical fiber head to contact closely;Flexible connection module is used to ensure that first optical fiber head and second optical fiber head are flexibly inserted.The insertion between modules of the application can realize the simultaneous connection of optical signal and electrical signal, and the optical path and the circuit partition transmission do not interfere with each other, can simultaneously connect external equipment and power distribution cabinet, and the photoelectric integration is high, easy to disassemble, maintain and stable and reliable signal transmission.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically to a connector that integrates optoelectronic signals. Background Technology

[0002] With the development of medical technologies such as minimally invasive diagnosis and treatment, intraoperative physiological monitoring, and intensive care, fiber optic sensors have been widely used in the field of optical acquisition of medical physiological parameters due to their advantages such as resistance to electromagnetic interference, good insulation, suitability for minimally invasive implantation, and excellent biocompatibility. When medical fiber optic sensing devices are in operation, they need to simultaneously transmit the optical signals acquired by the fiber optic cable and the electrical signals for module power supply and demodulation communication. Therefore, in clinical diagnosis and treatment and equipment assembly scenarios, there is an urgent need for integrated connectors that can simultaneously interface with optical and electrical signals, while also considering the requirements of miniaturization, convenient plug-and-play, and compatibility with medical disinfection environments.

[0003] Currently, medical optoelectronic connection solutions are mainly divided into three categories, all of which have unavoidable technical defects: The first is the separate optoelectronic connector, where the fiber optic connector and electrical connector are laid out independently, occupying a large equipment installation space. Medical staff are prone to incorrect or missed insertions, and the wiring harness is messy, which does not meet the requirements of neat wiring and quick connection of medical equipment. The second is the ordinary integrated optoelectronic hybrid connector, which only has signal conduction function. The connector itself has no electrical control processing capability and requires an external independent PCB board to complete voltage stabilization, filtering, and signal preprocessing. The external PCB is easily corroded by medical disinfectant, and the assembly is cumbersome and the maintenance is inconvenient. The third is the tail-connected PCB type optoelectronic connector, where the PCB and connector are connected by separate wiring harnesses. The wiring is prone to breakage under intraoperative equipment movement and high-frequency plugging and unplugging conditions, and the structural stability is poor. In addition, most existing optoelectronic connectors with embedded PCBs are suitable for industrial and automotive applications, but they are too large, lack adequate sealing and medical insulation, and do not have a sterilization and corrosion-resistant structure. They cannot be adapted to the medical working conditions of strong electromagnetic fields, narrow internal cavities, and high-frequency sterilization in operating rooms. Furthermore, it is difficult to achieve linkage between the optoelectronic port and the PCB electrical control function, which can easily lead to signal interference and transmission delays, affecting the accuracy of medical sensor data acquisition.

[0004] In summary, existing medical optoelectronic connection structures are either cumbersome to plug in, require external PCB modules, or have insufficient structural stability. Industrial integrated connectors cannot adapt to the specific working conditions of medical applications. There is an urgent need to develop an optoelectronic hybrid connector that can integrate optoelectronic interfaces, has a built-in simple functional PCB, is suitable for medical scenarios, and is easy to assemble and disassemble. Summary of the Invention

[0005] This invention addresses at least one technical problem in the prior art by disclosing a connector that integrates optoelectronic signals. The invention comprises an elbow module, a pin connector module, a hole connector module, a connection auxiliary module, and a flexible connector module. Through flexible interlocking between modules, simultaneous conduction of optical and electrical signals is achieved, with separate transmission of optical and electrical paths without interference. It can simultaneously connect external devices and power distribution cabinets, offering high optoelectronic integration, convenient disassembly and maintenance, and stable and reliable signal transmission. This effectively solves the problems of cumbersome interlocking, the need for external PCB modules, or insufficient structural stability in existing medical optoelectronic connection structures.

[0006] This invention is achieved through the following technical solution:

[0007] This invention first provides a connector for mixing optoelectronic signals, comprising:

[0008] Elbow module, including elbow housing and its internally sealed PCB board;

[0009] The pin connector module includes a pre-cast pin connector and several No. 2 connecting rods arranged around it that are connected to the electrical signals of the PCB board. A No. 2 optical fiber head that is connected to the optical signals of the PCB board is fixedly sleeved inside the pre-cast pin connector.

[0010] The hole-mount connection module includes a flange hole-mount and an externally sleeved flange shell, an internally movable sleeved fiber optic head for optical signal communication with the second fiber optic head, and a first connecting rod circumferentially provided with electrical signal communication with the second connecting rod; the second fiber optic head and the first connecting rod are also used for optical signal connection and electrical signal connection with external equipment, respectively.

[0011] The connection auxiliary module includes a spring and an externally sleeved spring thrust member, which is used to assist the first fiber optic head and the second fiber optic head in making tight contact.

[0012] The flexible connection module includes a sleeve and an external protective sleeve, used to assist in the flexible insertion of fiber optic connectors No. 1 and No. 2.

[0013] As a further embodiment, an external movable spring is attached to the first optical fiber, and a spring thrust connector is attached to the outside of the spring. The spring thrust connector and the flange hole seat are interference-fitted to limit and guide the spring. The lower part of the first optical fiber head extends to the outside of the flange hole seat.

[0014] As a further embodiment, the flange seat is a hollow cylindrical structure with several through holes evenly distributed around its circumference. A first connecting rod is fixedly sleeved inside each of the through holes. The upper and lower ends of the first connecting rod form a first insertion hole and a second insertion hole, respectively. The second insertion hole is used for plugging into the terminal in the control cabinet or welding the wire harness. The first insertion hole is used for plugging into the terminal of the pin socket connection module or welding the wire harness, so that the electrical signal between the pin socket connection module and the control cabinet is conducted. The flange seat has an annular boss in the middle for limiting the first fiber optic head. The upper and lower parts of the annular boss are the first cavity and the second cavity, respectively.

[0015] As a further embodiment, the flange shell is a hollow cylindrical structure, including a first groove arranged sequentially from top to bottom on the body and its inner wall, an inner protrusion for engaging with the needle seat connection module, and a second groove for accommodating the engagement part of the needle seat connection module; there are two first grooves, which are symmetrically arranged, and one limiting groove.

[0016] As a further option, the flange seat and the flange shell are interference-fitted, and both are insulators.

[0017] As a further solution, the precast pin holder is a hollow cylindrical structure with a snap-fit ​​part on the outside for insertion into slot 1. The inside is formed from top to bottom into cavities 3, 4, 5, 6 and 7. Cavity 4 is fixedly connected to fiber optic head 2. The precast pin holder extends from the top of fiber optic head 2 for connecting to the PCB board. The precast pin holder has a pin holder boss on the outside that cooperates with the limiting groove.

[0018] As a further embodiment, the outer side of the protective sleeve is interference-fitted with the inner wall of cavity number six, and the sleeve and fiber optic head number two are sequentially sleeved from the outside to the inside. The upper part of the sleeve is fixedly sleeved with fiber optic head number two, and the lower part is used for flexibly sleeved with fiber optic head number one.

[0019] As a further embodiment, the sleeve is an open ceramic sleeve; the protective sleeve is a ceramic protective sleeve.

[0020] As a further embodiment, the protective sleeve includes an upper part and a lower part of an integral structure, with a positioning platform formed at the junction of the upper and lower parts, and a limiting step for limiting the sleeve inside the lower part.

[0021] As a further solution, the inside of the elbow housing is provided with a potting area for sealing and mounting the PCB board. The PCB board is provided with several No. 1 connection holes for passing optical signals and No. 2 connection holes for soldering No. 2 connection rods. The wire harness of the PCB board and the upper extension of the No. 2 optical fiber head are sleeved together to form a cable. The outside of the cable is formed with miniature optical connectors and electrical connectors for external insertion.

[0022] The features and beneficial effects of this invention are as follows:

[0023] (1) This invention achieves synchronous integrated transmission of photoelectric signals through quick insertion between the pin socket connection module and the hole socket connection module, while improving working efficiency. A connection auxiliary module is set up during the insertion process of the pin socket connection module and the hole socket connection module to ensure flexible insertion of the first and second fiber optic heads, preventing damage to the fiber optic heads during insertion. The connection auxiliary module ensures tight contact between the two fiber optic heads, effectively guaranteeing the connectivity and stability of the optical path. This effectively solves the problems of cumbersome insertion, the need for external PCB modules, or insufficient structural stability in existing medical optoelectronic connection structures.

[0024] (2) The first fiber head of the present invention is a movable sleeve structure inside the flange hole seat. With the help of the internal spring, it can provide a small amount of axial compensation to make up for the machining tolerance of the parts and the assembly gap, and ensure that the end face of the first fiber head and the second fiber head are tightly fitted to eliminate the optical transmission gap. The conductive connecting rod is automatically centered by the conical face insertion. Even if there is a small assembly offset, it can ensure full contact and improve the long-term working reliability.

[0025] (3) The present invention forms a two-pole docking structure, which is suitable for connecting internal and external devices. On the inside of the module, the optical path is connected by plugging the No. 2 optical fiber head with the No. 1 optical fiber head. The No. 2 connecting rod is plugged into the No. 1 connecting rod to conduct the circuit. The pin seat is locked to the flange shell. The whole plug-in docking does not require bolt tightening, and the assembly efficiency is high. The snap-fit ​​structure is shockproof and anti-detachment. There will be no optical path deviation or circuit connection under vibration. On the outside of the module, the No. 1 optical fiber head extends downward to the flange hole seat to connect to the optical fiber inside the power distribution cabinet. The lower end of the No. 1 connecting rod is plugged into the external terminal or wire harness inside the cabinet. The No. 2 optical fiber head connects upward to the PCB board inside the elbow module. The elbow shell leads out the cable to connect to the external control equipment, so that this connector can realize the internal wiring of the cabinet and the signal conversion of external equipment at the same time, which enhances the versatility. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a side view of the connector for mixing optoelectronic signals according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the connector for mixing optoelectronic signals according to an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional view of the hole seat connection module according to an embodiment of the present invention;

[0030] Figure 4 This is a top view of the flange shell according to an embodiment of the present invention;

[0031] Figure 5 for Figure 4 Sectional view along axis AA;

[0032] Figure 6 This is a cross-sectional view of the flange hole seat according to an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the hole seat connection module according to an embodiment of the present invention;

[0034] Figure 8 for Figure 7 Enlarged view of section A in the middle;

[0035] Figure 9 This is a schematic diagram of the precast needle seat according to an embodiment of the present invention;

[0036] Figure 10 This is a cross-sectional view of the precast needle holder described in an embodiment of the present invention;

[0037] Figure 11 This is a cross-sectional view of the elbow module described in an embodiment of the present invention;

[0038] Figure 12 This is a schematic diagram of the PCB board described in an embodiment of the present invention;

[0039] Figure 13 This is a schematic diagram illustrating the connection between fiber optic head 1 and fiber optic head 2 as described in an embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-Flange shell; 101-Slot No. 1; 102-Limiting slot; 103-Outer protrusion; 104-External thread; 105-Inner protrusion; 106-Slot No. 2; 107-Flange shell boss; 2-Sealing ring No. 1; 3-Sealing ring No. 2; 4-Connecting rod No. 1; 5-Flange nut; 6-Fiber optic head No. 1; 7-Spring; 8-Flange hole seat; 81-Hole seat protrusion; 82-Cavity No. 1; 83-Cavity No. 2; 84-Annular boss; 85-Insertion hole No. 1; 86-Insertion hole No. 2; 87-Hole seat boss; 9-Spring thrust connector; 10-Elbow shell; 11-Pouring area; 12- 13-Fiber Optic Head No. 2; 14-Pre-cast Pin Holder; 141-Cavity No. 3; 142-Cavity No. 4; 143-Cavity No. 5; 144-Cavity No. 6; 145-Cavity No. 7; 146-Snap-fit ​​Part; 147-Pin Holder Boss; 15-PCB Board; 151-Connecting Hole No. 1; 152-Connecting Hole No. 2; 16-Sleeve; 17-Protective Sleeve; 171-Upper Part; 172-Positioning Stage; 173-Lower Part; 174-Limiting Step; 18-Cable. Detailed Implementation

[0042] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below, and embodiments of the present invention will be provided, but this does not limit the scope of the present invention.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In existing technologies, optical signal connections and electrical signal connections typically require two connectors. This application provides a connector for hybrid optoelectronic signals, achieving synchronous integrated transmission of optoelectronic signals through quick-connect insertion between the pin-connector module and the socket-connector module, thus improving work efficiency. A connection auxiliary module is incorporated during the insertion process of the pin-connector module and the socket-connector module to ensure flexible insertion of the first and second fiber optic heads, preventing damage during insertion. This auxiliary module also ensures tight contact between the two fiber optic heads, effectively guaranteeing the continuity and stability of the optical path. The connector's conductive path is evenly distributed, minimizing heat generation during high-current transmission and reducing electrical signal transmission loss. Furthermore, the optical path is independently arranged in the central channel of the pin-connector module and the socket-connector module, physically separated from the peripheral conductive connecting rods, avoiding electromagnetic and electrostatic interference with the optical signal generated by the circuit.

[0046] A connector for hybrid optoelectronic signals, such as Figures 1 to 13 As shown, it includes:

[0047] The elbow module includes an elbow housing 10 and an internally sealed PCB board 15;

[0048] The pin socket connection module includes a pre-cast pin socket 14 and several No. 2 connecting rods 12 arranged around it that are electrically connected to the PCB board 15. The No. 2 fiber optic head 13 that is optically connected to the PCB board 15 is fixedly sleeved inside the pre-cast pin socket 14.

[0049] The hole seat connection module includes a flange hole seat 8 and an externally sleeved flange shell 1, and an internally movable sleeved first fiber head 6 for optical signal communication with the second fiber head 13. The flange hole seat 8 is circumferentially provided with a first connecting rod 4 that is electrically connected to the second connecting rod 12. The second fiber head 13 and the first connecting rod 4 are also used for optical signal connection and electrical signal connection with external equipment, respectively.

[0050] The connection auxiliary module includes a spring 8 and an externally sleeved spring thrust member 9, which is used to assist the first fiber optic head 6 and the second fiber optic head 13 in close contact.

[0051] The flexible connection module includes a sleeve 16 and an external protective sleeve 17, which are used to ensure the flexible insertion of the first fiber optic head 6 and the second fiber optic head 13.

[0052] This application consists of five independent modules: an elbow module, a pin connector module, a hole connector module, a connection auxiliary module, and a flexible connection module, which facilitates disassembly, assembly, and maintenance. The circuit is connected to the first connector via the second connector, and the optical path relies on the connection between the second and first fiber optic heads. The photoelectric channels are arranged in zones to avoid electromagnetic interference and ensure stable signal transmission. The inner modules are plugged in for easy assembly and are shockproof and prevent loosening. The outer modules are connected to external equipment and the internal wiring of the power distribution cabinet, realizing integrated photoelectric conversion. This application has a compact structure and few parts. Synchronous photoelectric conduction can be achieved simply by plugging in, which greatly improves work efficiency.

[0053] The connection auxiliary module includes a spring 8 and an externally sleeved spring thrust member 9. The connection auxiliary module is used to assist in the tight contact between the first fiber optic connector 6 and the second fiber optic connector 13, ensuring the optical path connection between them.

[0054] The flange hole connection module includes a flange hole seat 8 and a flange shell 1 and a flange nut 5 that are sequentially fitted from the inside to the outside. Inside, a first fiber optic head 6 and a spring 7 are sequentially fitted from top to bottom. The bottom of the first fiber optic head 6 extends to the outside of the flange hole seat 8 for easy connection with the fiber optic cable in the control cabinet. A spring thrust connector 9 is fitted to the outside of the spring 7. The spring thrust connector 9 and the flange hole seat 8 are interference-fitted to limit and guide the spring. The flange hole seat 8 is interference-fitted with the flange shell 1 at the top. Both the upper and lower ends of the flange hole seat 8 are provided with sockets for connecting electrical signals.

[0055] The flange shell and flange nut are fitted onto the outside of the flange seat from the outside in. Tightening the flange nut compresses the upper sealing ring, achieving a tight seal between the flange shell and the flange seat. This structure is simple to assemble and provides good protection and sealing. The lower end of the No. 1 fiber optic head extends out of the seat for easy connection to the fiber optic cable inside the cabinet. The spring, in conjunction with the interference fit spring thrust connector, guides and limits the spring, and the spring force presses the fiber optic head to ensure stable optical signal connection. Conductive insertion holes are provided at both the upper and lower ends of the flange seat, which can be connected to the pin socket connection module and the internal wiring of the control cabinet, respectively, to achieve an integrated optoelectronic layout.

[0056] Both the flange seat 8 and the flange shell 1 are made of insulators, preferably plastic.

[0057] The flange seat 8 is a hollow cylindrical structure with several through holes evenly distributed around its circumference. After the first connecting rod 4 is fixedly sleeved inside the through holes, the upper and lower ends of the first connecting rod 4 form a first insertion hole 85 and a second insertion hole 86, respectively. The second insertion hole 86 is used to plug into the terminal in the control cabinet or to weld the wire harness. The first insertion hole 85 is used to plug into the terminal of the pin socket connection module or to weld the wire harness, so that the electrical signal between the pin socket connection module and the control cabinet is connected. The flange seat 8 has an annular boss 84 in the middle for limiting the first optical fiber head 6. The upper and lower parts of the annular boss 84 are the first cavity 82 and the second cavity 83, respectively.

[0058] The flange socket adopts a hollow cylindrical structure, with through holes evenly distributed around the circumference to accommodate multiple connecting rods, ensuring balanced conductive force. The upper and lower ends of the through holes form No. 1 and No. 2 insertion holes, which can be plugged in or welded at both ends, flexibly connecting the pin socket connection module to the control cabinet circuit. The annular boss in the middle limits and positions the No. 1 fiber optic head, while separating the No. 1 and No. 2 cavities, facilitating manual insertion and welding operations and reducing assembly difficulty. The cavities form a closed containment space, which can reduce the direct corrosion of the fiber end face and conductive contact parts by dust and moisture, improving the overall protection performance.

[0059] Both the first connecting rod 4 and the second connecting rod 12 are made of conductive materials. Preferably, the base material of the first connecting rod 4 and the second connecting rod 12 is copper, and the surface plating is gold plating or palladium-nickel alloy plating.

[0060] Both ends of the No. 1 connecting rod 4 are provided with tapered holes, and the tapered surface serves as a guide for insertion, making it easy for the terminals to be quickly aligned and inserted. The tapered surface fits tightly with the terminal, increasing the conductive contact area, effectively reducing contact resistance and reducing heat generation when energized. At the same time, the tapered surface has an automatic centering and correction effect, so when the No. 1 connecting rod is welded to the core wire, it is not easy to produce a loose connection under vibration conditions.

[0061] In some embodiments, a hole seat protrusion 81 is also provided on the outer side of the flange hole seat 8. The hole seat protrusion 81 is used to insert into the limiting groove 102. The hole seat protrusion 81 and the limiting groove 102 cooperate to form a foolproof structure, which can effectively prevent the pin seat from being installed backwards or the wiring from being connected incorrectly.

[0062] The second sealing ring 3 is sleeved on the outside of the hole seat protrusion 81. When the hole seat connecting module and the needle seat connecting module are assembled, the bottom of the needle seat connecting module will abut against the second sealing ring. The sealing ring is elastic and plays a buffering role when the equipment vibrates during operation, offsetting the slight relative displacement between the hole seat connecting module and the needle seat connecting module, preventing the gap between the two from increasing and loosening, and reducing the vibration impact on the internal needle seat and optical fiber head, ensuring the long-term stability of the optoelectronic connection.

[0063] Preferably, a first sealing ring 2 is fitted onto the outside of the flange housing 1 for sealing.

[0064] The flange shell 1 is a hollow cylindrical structure, including a body and its inner wall with a first groove 101, an inner protrusion 105 and a second groove 106 arranged sequentially from top to bottom. The upper part of the first groove 101 is an inclined surface to facilitate the insertion of the needle seat connection module. The inner protrusion 105 is used to lock the needle seat connection module to prevent it from coming out. The second groove 106 is used to accommodate the locking part of the needle seat connection module. The flange housing 1 is also provided with external threads 104 and external protrusions 103 for connection with the control cabinet. The external protrusions 103 are annular and have three main functions: First, when installing the flange housing 1, the external protrusions serve as an indicator, with the end with the protrusions facing upwards and the lower end connecting to the control cabinet; Second, during installation, the external protrusions also serve as a gripper, making it convenient for workers to grip or for external tools to hold; Third, when tightening the external threads, the external protrusions abut against the outer wall of the control cabinet housing to form a positioning shoulder, limiting the depth of the flange housing screwing in and preventing excessive screwing in that could damage the internal connectors; At the same time, the protruding end face can work with a sealing gasket to press the cabinet body, sealing installation gaps, preventing dust, water, and the intrusion of dust and moisture from inside the cabinet, thus improving the protection level.

[0065] The flange housing is a hollow, through-type structure that allows the pin header cable to pass through, resulting in neat wiring. The combination of internal layered limiting and external threaded limiting functions simultaneously provides three major functions: insertion assembly, locking and anti-disengagement, and cabinet installation sealing. The high integration of the flange housing structure reduces the number of parts and lowers production costs. The second slot provides space to accommodate the snap-fit ​​part of the pin header connection module. After assembly, the inner protrusion engages with the outer side of the snap-fit ​​part, forming a double axial limiting and locking mechanism. During operation, under vibration, pulling, and insertion / extraction forces, it firmly locks the pin header, preventing the connector from loosening or disengaging, ensuring stable electrical connections, and avoiding power outages and poor contact. The first slot, the inner protrusion, and the second slot are arranged layer by layer along the inner wall of the hollow cylinder from top to bottom, providing segmented radial limiting for the pin header. After insertion, this restricts radial offset and misalignment of the connector, effectively ensuring the coaxiality of the pin header and the flange housing, avoiding short circuits caused by internal terminal misalignment, and thus improving the connector's sealing performance and electrical safety.

[0066] Preferably, the flange shell 1 is a one-piece molded structure with high structural strength. This structure has no splicing gaps, making it more resistant to pressure and vibration, and suitable for the long-term operating conditions of the control cabinet.

[0067] Preferably, the external thread 104 is threadedly connected to the flange nut 5.

[0068] Both No. 1 sealing ring 2 and No. 2 sealing ring 3 are O-rings.

[0069] In some embodiments, there are two slots 101, which are symmetrically arranged, and one limiting slot 102. The two slots are symmetrically arranged and synchronously guided and avoided on both sides, so that the insertion is smooth and the force is evenly distributed, limiting the radial displacement of the needle seat. A separate limiting slot is set to form a foolproof structure to avoid the needle seat being installed backward or the circuit being connected incorrectly. The combination of the two makes the structure easy to assemble and accurately positioned, reducing the defect rate caused during processing and assembly.

[0070] The first fiber optic head 6 is provided with a limiting ring in the middle to limit the movement of the first fiber optic head.

[0071] The inner wall of the flange shell 1 is provided with a flange shell boss 107, and the outer wall of the flange hole seat 8 is provided with a hole seat boss 87 that engages with the flange shell boss 107, so as to facilitate the positioning and installation of the two.

[0072] The assembly method for the socket connection module is as follows:

[0073] First, insert the No. 1 fiber optic head 6 into the center hole of the annular boss 84 through the No. 2 cavity 83. The limiting ring of the No. 1 fiber optic head 6 abuts against the annular boss 84. The upper part of the No. 1 fiber optic head 6 is located in the No. 1 cavity 82, which facilitates the insertion of the No. 2 fiber optic head. The spring 7 and the spring thrust connector 9 are sequentially sleeved below the No. 1 fiber optic head 6. The spring thrust connector 9 and the No. 2 cavity 83 of the flange seat 8 are interference-fitted to form an integral structure. Second, after aligning the hole seat protrusion 81 and the limiting groove 102, the integral structure is placed inside the flange shell 1. The upper part of the flange seat 8 is interference-fitted with the flange shell 1. Third, the No. 2 sealing ring 3 is sleeved on the outside of the flange seat 8 until it is pressed into the hole seat protrusion 81 and tightened. Finally, the No. 1 sealing ring 2 and the flange nut 5 are sleeved on the outside of the flange shell 1, with the No. 1 sealing ring 2 located below the outer protrusion 103. The flange nut 5 is connected to the external thread 104.

[0074] The elbow module includes an elbow housing 10, inside which is a potting area 11 for sealing and mounting a PCB board 15. Potting the PCB board in the potting area improves the stability and consistency of the connector itself. At the same time, after potting, the solder joints and circuits of the PCB board are waterproofed, dustproofed, and shockproofed with insulation. One end of the wire of the PCB board 15 extends and is connected to the extension wire of the No. 2 fiber optic connector 13 together to form a cable 18, which simplifies the wiring conversion structure and reduces the number of accessories. The elbow housing changes the outgoing cable route to adapt to the narrow space of the cabinet, and at the same time protects the bending section of the cable to prevent the cable from bending and breaking. The overall structure is compact, the wiring is neat, and the electrical connection is stable and reliable.

[0075] PCB board 15 can carry small programmable read-only memory such as EEPROM.

[0076] Preferably, the PCB board 15 has several No. 1 connection holes 151 for passing optical signals and No. 2 connection holes 152 for soldering No. 2 connection rods 12. This structure realizes the partitioned wiring of the optoelectronic circuit, which can effectively avoid electromagnetic crosstalk; the No. 2 connection holes 152 are used for soldering, which increases the bonding strength of the solder joint and can also resist shock and prevent wire detachment; at the same time, partitioning the hole positions also serves to prevent mistaken identification, avoid incorrect cable connection, and facilitate potting protection.

[0077] The pin connector module includes a pre-cast pin connector 14 and several second-order connecting rods 12 mounted circumferentially thereon. The upper part of the second-order connecting rod 12 is used to connect to the PCB board 15, and the lower part is used to connect to the first-order connecting rod 4, enabling electrical signal conduction between the PCB board and the distribution box. The second-order fiber optic head is fixedly sleeved inside the pre-cast pin connector 14. Multiple second-order connecting rods are arranged circumferentially around the pre-cast pin connector, with their upper and lower ends respectively connecting to the PCB board and the first-order connecting rod, establishing a continuous electrical signal path. The second-order fiber optic head is axially assembled inside the pre-cast pin connector. The whole system achieves optoelectronic integration, with optical and electrical paths isolated from each other to avoid interference. The structure is compact and easy to plug in and disassemble.

[0078] The precast needle holder 14 is a hollow cylindrical structure with a snap-fit ​​part 146 on the outside for inserting into the first slot 101. The inside is formed from top to bottom as follows: third cavity 141, fourth cavity 142, fifth cavity 143, sixth cavity 144 and seventh cavity 145. The fourth cavity 142 is fixedly connected to the second fiber optic head 13. The precast needle holder 14 extends from the top of the second fiber optic head 13.

[0079] The precast needle holder is an integral hollow cylindrical structure. The snap-fit ​​part is used to insert into the first slot of the flange shell for snap-fit ​​and limiting, which is convenient for assembly and can prevent the needle holder from falling out. The internal multi-level layered cavity realizes the partitioned arrangement of components.

[0080] In some embodiments, the second connecting rod 12 has a tapered hole at its upper end for connection to the PCB board 15, and a pin at its lower end for inserting the first connecting rod 4. The tapered hole at the upper end of the second connecting rod facilitates insertion into the PCB board terminals; the integrated pin at the lower end is used to insert into the tapered hole of the first connecting rod. The tapered surface not only increases the conductive contact area but also enables automatic centering and correction. The distinction between the upper and lower structures prevents assembly errors, and the bidirectional tapered clamping structure provides shock resistance and prevents loosening, effectively ensuring long-term stable conduction of electrical signals.

[0081] In some embodiments, the precast needle seat 14 is provided with a needle seat boss 147 on the outside that cooperates with the limiting groove 102.

[0082] The assembly method for the pin header connection module is as follows:

[0083] Insert the No. 2 fiber optic head 13 into the No. 3 cavity 141, No. 4 cavity 142, No. 5 cavity 143 and No. 6 cavity 144 in sequence until the limiting ring of the No. 2 fiber optic head 13 is in contact with the step between the No. 4 cavity 142 and the No. 5 cavity 143. Then the No. 2 fiber optic head 13 is connected to the pre-cast needle seat 14.

[0084] In some embodiments, the circuit connection uses 0.7mm diameter pins and corresponding sockets, which can meet a maximum current of 1.5A.

[0085] The flexible connection module includes a sleeve 16 and a protective sleeve 17. The outer side of the protective sleeve 17 is interference-fitted with the inner wall of cavity 144 (cavity 6). The sleeve 16 and fiber optic connector 13 (optical fiber optic connector 2) are sequentially fitted inside the sleeve from the outside to the inside. The upper part of the sleeve 16 is fixedly fitted with fiber optic connector 13 (optical fiber optic connector 2), while the lower part is used for flexibly fitting fiber optic connector 6 (optical fiber optic connector 1). The interference fit between the outer wall of the protective sleeve and the inner wall of cavity 6 allows for stable positioning of the flexible connection module without additional locking accessories. The internal layers of the protective sleeve accommodate the sleeve and fiber optic connector 2. The upper end of the sleeve is fixedly fitted with fiber optic connector 2, ensuring coaxial synchronous movement and stable optical path coupling accuracy. The lower end of the sleeve is flexibly fitted with fiber optic connector 1. During insertion, friction damping achieves buffered sliding, absorbing docking impact and automatically compensating for coaxial assembly tolerances. The entire module integrates multiple functions such as fixing, protection, and flexible buffer docking, occupying little space and effectively improving the connector's insertion and removal tolerance and long-term operational reliability.

[0086] The sleeve 16 is an open sleeve. Preferably, the sleeve 16 is an open ceramic sleeve. Using an open ceramic sleeve to hold the optical fiber, the open structure gives the sleeve radial elasticity and a buffering and shock-absorbing effect, which can reduce optical fiber damage caused by equipment vibration.

[0087] The protective sleeve 17 is a ceramic protective sleeve. The ceramic material can ensure dimensional stability, insulation and wear resistance, and can ensure long-term coaxial positioning of optical fibers, reducing optical loss.

[0088] In one embodiment, an elastic adhesive layer is formed between the second fiber optic head 13 and the sleeve 16 after curing with epoxy adhesive. This connection method is not only tensile-resistant, but also serves as a buffer, shock absorber, and waterproof seal.

[0089] In one embodiment, the sleeve 16 is a hollow cylindrical structure with an integral structure.

[0090] Specifically, the protective sleeve 17 includes an integrated upper part 171 and a lower part 173. The junction of the upper part 171 and the lower part 173 forms a positioning platform 172. The lower part 173 has a limiting step 174 inside for limiting the sleeve 16. The limiting step 174 and the outer circle limiting structure of the sleeve 16 constrain the sleeve from all sides in the radial direction, eliminate the radial gap of the sleeve, ensure that the sleeve 16 will not shift or tilt during working vibration, and stabilize the concentricity of the optical fiber. The limiting step 174 also plays a supporting role, preventing the sleeve from tilting and squeezing the optical fiber on one side during the contact of the first optical fiber head 6 and the second optical fiber head 13, and preventing the glass optical fiber from breaking.

[0091] To facilitate the insertion of the socket connection module, the lower part of 173 is tapered.

[0092] The assembly method for the flexible connection module is as follows:

[0093] After the No. 2 fiber optic head 13 is inserted into the pre-cast needle holder 14, an installation space is formed between the No. 2 fiber optic head 13 and the No. 6 cavity 144. This installation space is used to accommodate the sleeve 16 and the protective sleeve 17. After the sleeve 16 is sleeved over the outside of the No. 2 fiber optic head 13 from below the pre-cast needle holder 14, it is then fixed with epoxy adhesive. The sleeve 16 extends into the No. 7 cavity 145. The positioning platform 172 of the protective sleeve 17 is positioned by contacting the top of the No. 7 cavity 145. At this time, the top of the upper part 171 is in contact with the No. 6 cavity 144. The top of cavity 144 is flush with the upper part 171, which is interference-fitted with the inner wall of cavity 144. The positioning platform 172 facilitates quick and easy positioning of the protective sleeve 17, greatly improving assembly efficiency and preventing errors. At this time, the limiting step 174 contacts the bottom of the sleeve 16. The limiting step 174 and the top of cavity 144 cooperate with each other to restrict the vertical movement of the sleeve. The lower inner limiting step 174 provides radial clamping and limiting, constraining the left and right radial displacement of the sleeve 16. This ensures that the sleeve has no axial movement or radial sway within the protective sleeve, guaranteeing the coaxial accuracy and stability of the flexible connection module.

[0094] The flexible connection principle of fiber optic connector 6 (No. 1) and fiber optic connector 13 (No. 2) is as follows:

[0095] When the second fiber optic head 13 completes the insertion action downwards, the sleeve 16 is first fitted onto the outside of the first fiber optic head 6. After the sleeve 16 contacts the first fiber optic head 6, it slowly slides relative to the first fiber optic head 6 by relying on the friction of the contact surface. The first fiber optic head 6 continues to extend into the sleeve 16. At the same time, under the action of friction, it presses down against the spring 7. The spring 7 works in conjunction with the spring thrust connector 9 to form a buffer and shock absorption effect for the insertion process until the first fiber optic head 6 and the second fiber optic head 13 are in complete contact. At this time, the optical signals of the hole seat connection module and the pin seat connection module are connected. After the sleeve 16 contacts the fiber optic connector 6, it slowly slides relative to the connector by relying on the friction of the contact surface. On the one hand, this slows down the insertion speed, buffers the impact of the connection, avoids the ceramic ferrule from being violently struck and causing chipping or scratches, reduces instantaneous stress, protects the epoxy bonding structure of the optical fiber, and prevents the adhesive layer from cracking and debonding. On the other hand, it allows the fiber optic connector to press down the spring at a uniform speed, so that the spring buffer stroke is fully released. At the same time, the sleeve can automatically center and correct the deviation during the sliding process, reduce the insertion deviation, stabilize the optical coupling loss, and also form sliding damping to suppress the axial rebound of the component.

[0096] The assembly process of a connector that combines optoelectronic signals is as follows:

[0097] Each No. 2 connection hole 152 of the PCB board 15 is soldered to the top of a No. 2 connection rod 12. The wire harness of the PCB board 15 is connected to the upper extension of the No. 2 fiber optic head 13 with an outer sleeve to form a cable 18. The outside of the cable 18 forms a miniature optical connector and an electrical connector for external insertion. Then, the PCB board 15 is encapsulated in the potting area 11 of the elbow housing 10. After aligning the limiting groove 102 and the pin seat boss 147, the snap-fit ​​part 146 is inserted into the No. 1 groove 101 until the snap-fit ​​part 146 passes through the No. 1 groove 101 and the inner protrusion 105 and enters the No. 2 groove 106. The inner protrusion 105 acts as a snap-fit ​​to prevent the connector from loosening. During the insertion process, the No. 2 fiber optic head 13 and the No. 1 fiber optic head 6 come into contact. The pin below the No. 2 connection rod 12 is directly inserted into the tapered hole above the No. 1 connection rod 4, connecting the hole seat connection module, the pin seat connection module and the elbow module with optical and electrical signals. Connect the electrical signal harness inside the control box to the tapered hole below the second connecting rod 4 via terminal welding or direct welding. After welding, connect the flange shell 1 to the control box via thread. At this point, insert the first fiber optic connector 6 directly into the signal terminal inside the control box, and then tighten it with the flange nut. At this time, the electrical and optical signals of the control box and PCB board are simultaneously connected.

[0098] During disassembly, simply unscrew the flange housing 1 and the control box, and then pull apart the hole seat connection module and the pin seat connection module. At this time, the snap-fit ​​part 146 will come out from the second slot 106, and the two will separate.

[0099] The connector in this application features a partitioned and isolated optoelectronic channel, which avoids electromagnetic and electrostatic interference with the optical signal generated by the circuit, effectively reducing optical insertion loss and electrical signal crosstalk. Simultaneously, it achieves synchronous integrated transmission of optical and electrical signals, eliminating the need for separate openings for fiber optic cables and cables, thus saving installation space in the distribution cabinet. Furthermore, this invention employs a two-sided elastic snap-fit ​​structure; by pushing and pulling, the elastic snap-fit ​​changes shape, enabling rapid insertion and removal. This significantly improves work efficiency.

[0100] Example 1

[0101] Connectors that combine photoelectric signals are used in endoscopes.

[0102] The PCB board is a circuit board adapted for endoscope data processing. Insert the optical signal connector and electrical signal connector of cable 18 into the optical interface and electrical interface of the endoscope, respectively. Connect the port connector module to the signal and circuit terminals inside the control box. Then, simply plug in the port connector module and the pin connector module. In application, the fiber optic cable transmits high-definition images inside the cavity, while the circuit transmits instrument control and lighting power.

[0103] Example 2

[0104] Connectors that combine photoelectric signals are used in optical inspection instruments.

[0105] The PCB board is a circuit board adapted for the data processing of the optical inspection instrument. Insert the optical signal connector and electrical signal connector of cable 18 into the optical interface and electrical interface of the optical inspection instrument, respectively. Connect the socket connection module to the signal terminal and circuit terminal inside the control box. Then, simply plug in the socket connection module and pin connection module. In application, the optical fiber transmits the detection data, and the circuit powers the equipment.

[0106] Since the elbow module and pin socket connection module of this application are pre-connected according to the application scenario, in actual application, it is only necessary to plug the cable into the corresponding external interface, connect the pin socket connection module to the control box, and plug the pin socket connection module and the pin socket connection module together. The operation is simple and convenient. While ensuring the transmission of photoelectric signals, it also simplifies the operation and improves work efficiency.

[0107] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A connector for hybrid optoelectronic signals, characterized in that: include: Elbow module, including elbow housing and its internally sealed PCB board; The pin connector module includes a pre-cast pin connector and several No. 2 connecting rods arranged around it that are connected to the electrical signals of the PCB board. A No. 2 optical fiber head that is connected to the optical signals of the PCB board is fixedly sleeved inside the pre-cast pin connector. The hole-mount connection module includes a flange hole-mount and an externally sleeved flange shell, an internally movable sleeved fiber optic head for optical signal communication with the second fiber optic head, and a first connecting rod circumferentially provided with electrical signal communication with the second connecting rod; the second fiber optic head and the first connecting rod are also used for optical signal connection and electrical signal connection with external equipment, respectively. The connection auxiliary module includes a spring and an externally sleeved spring thrust member, which is used to assist the first fiber optic head and the second fiber optic head in making tight contact. The flexible connection module includes a sleeve and an external protective sleeve, used to assist in the flexible insertion of fiber optic connectors No. 1 and No.

2.

2. The connector for hybrid optoelectronic signals according to claim 1, characterized in that: The first optical fiber is externally fitted with a movable spring, and the spring is externally fitted with a spring thrust connector. The spring thrust connector and the flange hole seat are interference-fitted to limit and guide the spring. The lower part of the first optical fiber head extends to the outside of the flange hole seat.

3. The connector for hybrid optoelectronic signals according to claim 2, characterized in that: The flange seat is a hollow cylindrical structure with several through holes evenly distributed around its circumference. A first connecting rod is fixedly sleeved inside each of the through holes. The upper and lower ends of the first connecting rod form a first insertion hole and a second insertion hole, respectively. The second insertion hole is used to connect to the terminal in the control cabinet or to weld the wire harness. The first insertion hole is used to connect to the terminal of the pin socket connection module or to weld the wire harness, so that the electrical signal between the pin socket connection module and the control cabinet is conducted. The flange seat has an annular boss in the middle for limiting the first fiber optic head. The upper and lower parts of the annular boss are the first cavity and the second cavity, respectively.

4. A connector for hybrid optoelectronic signals according to claim 3, characterized in that: The flange shell is a hollow cylindrical structure, including a first groove arranged from top to bottom on the body and its inner wall, an inner protrusion for engaging with the needle seat connection module, and a second groove for accommodating the engagement part of the needle seat connection module; there are two first grooves, which are symmetrically arranged, and one limiting groove.

5. A connector for hybrid optoelectronic signals according to claim 4, characterized in that: The flange seat and the flange shell are interference fit, and both are insulators.

6. A connector for hybrid optoelectronic signals according to claim 4, characterized in that: The precast pin holder is a hollow cylindrical structure with a snap-fit ​​part on the outside for insertion into slot 1. The inside is formed from top to bottom into cavities 3, 4, 5, 6 and 7. Cavity 4 is fixedly connected to fiber optic head 2. The precast pin holder extends from the top of fiber optic head 2 for connecting to the PCB board. The precast pin holder has a pin holder boss on the outside that mates with the limiting groove.

7. A connector for hybrid optoelectronic signals according to claim 6, characterized in that: The protective sleeve is press-fitted to the inner wall of cavity number six. The sleeve and fiber optic head number two are sequentially sleeved from the outside to the inside. The upper part of the sleeve is fixedly sleeved to fiber optic head number two, and the lower part is used for flexibly sleeved to fiber optic head number one.

8. A connector for hybrid optoelectronic signals according to claim 7, characterized in that: The sleeve is an open ceramic sleeve; the protective sleeve is a ceramic protective sleeve.

9. A connector for hybrid optoelectronic signals according to claim 7, characterized in that: The protective sleeve comprises an upper and lower integral structure, with a positioning platform formed at the junction of the upper and lower parts, and a limiting step for limiting the sleeve inside the lower part.

10. A connector for hybrid optoelectronic signals according to claim 1, characterized in that: The elbow housing has an encapsulation area inside for sealing and mounting the PCB board. The PCB board has several No. 1 connection holes for passing optical signals and No. 2 connection holes for soldering No. 2 connection rods. The wire harness of the PCB board is connected to the upper extension of the No. 2 fiber optic head with a sheath to form a cable. The outside of the cable forms optical connectors and electrical connectors for external connection.

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