Photoelectric conversion connector

Abstract

The utility model provides a photoelectric conversion connector, comprising an optical module which comprises an optical module socket and is fixed on a PCB; the board end base sleeves the outer side of the optical module and is fixedly connected with the PCB; the wire end plug is matched with the board end base in a plugging manner and is internally provided with an insertion core assembly; the insertion core assembly comprises a ceramic insertion core matched with the optical module socket in an inserted mode, a metal sleeve arranged at one end of the ceramic insertion core in a sleeving mode, a fixing mechanism matched with the metal sleeve in an inserted mode and used for being fixedly connected with the wire end plug, and a spring, one end of the spring is connected with the metal sleeve, and the other end of the spring is connected with the fixing mechanism. The spring is arranged in the ferrule assembly, so that the ceramic ferrule can stretch out and draw back at a certain distance in the axial direction. When the line end plug is inserted into the board end base, the end face of the ceramic insertion core is tightly attached to the optical module and keeps elastic contact with the optical module, so that external force does not directly act on the optical module in the plugging and unplugging process of the line end plug, and the stability and reliability of the whole device are ensured.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a photoelectric conversion connector. Background Technology

[0002] With the rapid development of the automotive industry and the rise of intelligent driving and assisted driving, the amount of information transmitted between various modules inside a vehicle is increasing, and the requirements for the speed and stability of information transmission are also constantly rising. This necessitates a shift from traditional electrical transmission to optical transmission. However, due to the actual operating environment of a vehicle, the limitations of actual installation space, the micrometer-level fiber core, and the fact that the signals transmitted between various modules inside a vehicle are originally electrical signals, if the information transmission between them is in the form of optical signals, then a device is needed to achieve the mutual conversion between optical and electrical signals.

[0003] Existing optoelectronic conversion connectors generally include a plug and a socket. The socket contains an optoelectronic conversion module, and the plug contains a contact component that connects to the optical fiber. The plug and socket are connected by a coupling plugging and unplugging method. When the plug is inserted into the socket, the contact component contacts the optoelectronic conversion module, thereby using the optoelectronic conversion module to convert the optical signal transmitted through the optical fiber.

[0004] However, during the plug-in and plug-out process, the photoelectric conversion module and contact components may be deformed or displaced by external forces, which may cause the photoelectric conversion module and contact components to detach, affecting the stability of the connector operation. Utility Model Content

[0005] Based on the deficiencies of existing technologies, this utility model provides a photoelectric conversion connector, comprising:

[0006] An optical module, including an optical module socket, is fixed on a PCB and is used to convert optical and electrical signals.

[0007] The board end base is sleeved on the outside of the optical module and fixedly connected to the PCB;

[0008] The wire end plug is inserted into the board end base and has a ferrule assembly inside it.

[0009] The ferrule assembly includes a ceramic ferrule that is inserted into the optical module socket, a metal sleeve fitted onto one end of the ceramic ferrule, a fixing mechanism for fixing the ferrule to the wire end plug, and a spring, one end of the spring being connected to the metal sleeve and the other end being connected to the fixing mechanism.

[0010] Preferably, the device includes a correction device that is inserted into the plate end base. The correction device includes a correction part and a positioning part. The outer wall of the correction part is tightly fitted with the inner wall of the plate end base. The positioning part is sleeved on the outside of the optical module socket and the inner wall of the positioning part is tightly fitted with the outer wall of the optical module socket.

[0011] Preferably, the optical module includes an optical chip and a lens.

[0012] Preferably, it includes an electrical pin, which is L-shaped, with one end embedded in the board end base and the other end fixedly connected to the PCB.

[0013] Preferably, it includes a grounding plate, which is T-shaped, with one end fixedly connected to the board end base and the other end fixedly connected to the PCB.

[0014] Preferably, the plate end base is provided with a slot, and the wire end plug is provided with a first spring buckle that engages with the slot.

[0015] Preferably, a secondary clip is slidably connected to the plug end, one end of which abuts against the first snap fastener to prevent the first snap fastener from coming loose from the slot.

[0016] Preferably, the two side walls of the inner cavity of the plate end base are respectively provided with limiting grooves of different heights, and the two side walls of the wire end plug are respectively provided with limiting ribs of different heights corresponding to the two limiting grooves, and the limiting ribs are inserted into the limiting grooves.

[0017] Preferably, the end face of the ceramic ferrule is located within the cavity of the wire plug.

[0018] Preferably, the outer wall of the board end base connected to the PCB is provided with a plurality of positioning posts that are fixedly connected to the PCB.

[0019] Preferably, the plug has an electrical socket inside that engages with the electrical pin, and the electrical socket is detachably connected to the plug.

[0020] Preferably, the outer wall of the plug has a viewing window for disassembling the electrical socket.

[0021] Preferably, the fixing mechanism includes a fixing sleeve and a fixing plug. The fixing sleeve is sleeved on the outside of the metal sleeve and the bottom surface of its inner cavity is fixedly connected to one end of the spring. One end of the fixing plug is sleeved on the outside of the fixing sleeve and fits tightly, and the other end is provided with a second spring buckle that fits tightly with the inner wall of the wire end plug.

[0022] Beneficial effects:

[0023] The technical solution of this utility model achieves axial extension and retraction of the ceramic ferrule by incorporating a spring in the ferrule assembly that is sleeved outside the metal sleeve. When the wire plug is inserted into the board base, the ceramic ferrule is precisely inserted into the optical module socket. Furthermore, due to the thrust of the spring inside the ferrule assembly, the end face of the ceramic ferrule is tightly fitted to the optical module and maintains elastic contact. Therefore, most of the force generated during the insertion and removal of the wire plug, as well as during vibrations when the connector is used in automotive or other working environments, is directly transmitted to the PCB by the board base and does not directly act on the optical module, thus ensuring the stability and reliability of the entire device.

[0024] This application also includes a correction device. When the correction device is inserted into the board-end base, the positioning part of the correction device will be tightly fitted onto the outside of the optical module socket. After the optical module, the board-end base, and the correction device form a unified and tight fit, the board-end base is then fixedly connected to the PCB. The correction device is used to position the installation position of the board-end base to ensure that the electrical pins on the board-end base are parallel to the axis of the socket on the optical module socket. Attached Figure Description

[0025] The following figures are for illustrative purposes only and do not limit the scope of the present invention.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram of the structure of an optical module according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of the plate end base according to an embodiment of the present utility model.

[0029] Figure 4 This is a schematic diagram of the assembly of the plate end base and the optical module according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the assembly of the correction device and the plate end base according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the assembly of the correction device and the optical module according to an embodiment of the present invention.

[0032] Figure 7 This is an exploded view of a wire end plug according to an embodiment of the present invention.

[0033] Figure 8 This is an exploded view of a ferrule assembly according to an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached diagram: 1. PCB; 2. Optical module; 3. Board base; 4. Wire plug; 21. Optical module socket; 22. Optical chip; 5. Electrical pin; 6. Grounding plate; 7. Correction device; 71. Positioning part; 72. Correction part; 8. Positioning post; 31. Limiting groove; 32. Slot; 41. Limiting rib; 42. First spring clip; 43. Secondary clip; 44. Electrical socket; 9. Clamping mechanism; 10. Viewing window; 11. ferrule assembly; 111. Ceramic ferrule; 112. Metal sleeve; 113. Fixing mechanism; 114. Fixing sleeve; 115. Fixing plug; 116. Spring; 117. Second spring clip. Detailed Implementation

[0035] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments of the present invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same parts. For the sake of simplicity, the parts related to the present invention are shown schematically in each drawing and do not represent their actual structure as a product. Furthermore, for the sake of clarity and ease of understanding, in some drawings, components with the same structure or function are only schematically depicted, or only one is labeled.

[0036] In this utility model, "connection" can include direct connection, indirect connection, communication connection, and electrical connection, unless otherwise specified.

[0037] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly specifies otherwise. It will also be understood that, when used in the specification, the terms “comprising” and / or “including” mean the presence of the stated features, values, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, values, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the listed related items.

[0038] This utility model provides a photoelectric conversion connector, such as Figure 1 As shown, it includes PCB1, optical module 2, board base 3, and wire connector 4, wherein, as Figure 2As shown, the optical module 2 includes an optical chip 22, a lens, and an optical module socket 21. The optical chip 22 is coupled to the lens to realize the mutual conversion of light and signal. The optical chip 22 is soldered to a preset position on the PCB1 by reflow soldering. At this time, due to the influence of the soldering process, the optical module 2 may have a certain offset and tilt relative to the preset position on the PCB1. In this embodiment, the optical module socket 21 is set as two cylinders with insertion holes. The opening of the insertion hole is designed with a flared shape, which helps to guide the optical fiber and insert it smoothly.

[0039] like Figure 3 and Figure 4 As shown, the board end base 3 is injection molded from a compound with high heat resistance, high strength and excellent electrical properties. It has a cavity inside. When the board end base 3 is installed on the PCB1, the board end base 3 covers the outside of the optical module 2, but the board end base 3 does not directly contact the optical module 2. Therefore, when the board end base 3 is inserted or removed from the line end plug 4, the external force on the board end base 3 will not be directly transmitted to the optical module 2.

[0040] A pair of electrical pins 5 are embedded in the board end base 3. The electrical pins 5 are L-shaped, with one end embedded in the board end base 3 and extending into the inner cavity of the board end base 3, and the other end connected to the PCB1. Because the electrical pins 5 are directly embedded in the board end base 3, the insertion and extraction resistance can be increased while ensuring the dimensional accuracy of the electrical pins 5.

[0041] Multiple T-shaped grounding plates 6 are also pressed onto the outer wall of the board end base 3 that connects to PCB1. The end of the grounding plate 6 away from the board end base 3 is fixedly connected to PCB1 to further increase the insertion and extraction resistance.

[0042] Since the board-end base 3 does not directly contact the optical module 2, when the optical module 2 is soldered onto the PCB1 and then the board-end base 3 is fixed onto the PCB1, the optical module 2 cannot provide positioning for the board-end base 3. In this case, if the optical module 2 shifts or tilts due to the soldering process, but the board-end base 3 is still fixed in its designed position, the electrical pins 5 on the board-end base 3 will not be able to guarantee parallelism with the axial direction of the socket in the optical module socket 21. Therefore, if... Figure 5 and Figure 6 As shown, this application also includes a correction device 7, which includes a correction part 72 and a positioning part 71. When the plate end base 3 is to be installed, the plate end base 3 is first placed over the outside of the optical module 2, and then the correction device 7 is inserted into the plate end base 3 and the positioning part 71 is fitted onto the outside of the optical module socket 21. The inner wall of the positioning part 71 and the outer wall of the optical module socket 21 form a tight fit relationship. At the same time, the outer wall of the correction part 72 and the inner wall of the plate end base 3 are tightly fitted together.

[0043] After the optical module 2, board base 3, and correction device 7 form a unified and tight fit, the L-shaped electrical pin 5 and T-shaped grounding piece 6 on the board base 3 are fixed to the PCB1 by wave soldering. Finally, the correction device 7 is pulled out to ensure that the electrical pin 5 of the board base 3 is parallel to the axial direction of the socket of the optical module 21.

[0044] To further improve positioning accuracy and resistance to insertion and extraction, such as Figure 3 and Figure 4 As shown, multiple positioning posts 8 are fixedly connected to PCB1 on the outer wall of the board end base 3 where it connects to PCB1.

[0045] The two side walls of the inner cavity of the plate end base 3 are respectively provided with limiting grooves 31 of different heights, combined with Figure 7 The plug 4 is injection molded from a compound with high heat resistance, high strength, and excellent electrical properties. Two limiting ribs 41 of different heights are respectively provided on its two side walls corresponding to two limiting grooves 31. The limiting ribs 41 and the limiting grooves 31 are inserted into each other. Because the two limiting grooves 31 are at different heights, the plug 4 can only be inserted into the plate base 3 in one direction, thus preventing misinsertion and reverse insertion.

[0046] A slot 32 is provided on the outer wall of the board base 3 away from PCB1, and a first spring-loaded latch 42 is provided on the wire connector 4 to engage with the slot 32. When the wire connector 4 is inserted into the board base 3, the first spring-loaded latch 42 engages with the slot 32, thereby fixing the board base 3 and the wire connector 4. To prevent the first spring-loaded latch 42 from coming out of the slot 32, a secondary latch 43 is slidably connected to the wire connector 4, with one end of the secondary latch 43 abutting against the first spring-loaded latch 42. After the first spring-loaded latch 42 engages with the slot 32, the secondary latch 43 is pushed into the first spring-loaded latch 42, further pressing the first spring-loaded latch 42 into the slot 32, thus preventing the first spring-loaded latch 42 from being pressed down and preventing the wire connector 4 from coming loose from the board base 3.

[0047] The plug 4 has an electrical socket 44 inside, corresponding to the electrical pin 5. When the plug 4 is inserted into the base 3, the electrical pin 5 and the electrical socket 44 engage to transmit electrical signals. The electrical socket 44 is detachably connected to the plug 4. In this embodiment, the electrical socket 44 is engaged with the plug 4 via a clamping mechanism 9. Windows 10 for disassembling the electrical socket 44 are provided on the outer walls of both sides of the plug 4, corresponding to the electrical socket 44. The clamping mechanism 9 can be pressed through the windows 10, thereby separating the electrical socket 44 from the plug 4 and allowing for disassembly of the electrical socket 44.

[0048] like Figure 7 and Figure 8As shown, the plug 4 also has a ferrule assembly 11 corresponding to the optical module socket 21. The ferrule assembly 11 includes a ceramic ferrule 111 that engages with the optical module socket 21. A metal sleeve 112 is fitted onto the end of the ceramic ferrule 111 away from the optical module socket 21. A fixing mechanism 113 for fixing the ferrule assembly 11 and the plug 4 is fitted onto the outside of the metal sleeve 112. The fixing mechanism 113 includes a fixing sleeve 114 and a fixing plug 115. The fixing sleeve 114 is fitted onto the outside of the metal sleeve 112. A spring 116 is fitted onto the end of the metal sleeve 112 away from the ceramic ferrule 111. One end of the spring 116 is fixedly connected to the metal sleeve 112, and the other end is fixedly connected to the bottom surface of the inner cavity of the fixing sleeve 114. Thus, the metal sleeve 112 and the ceramic ferrule 111 can move axially relative to the fixing sleeve 114 under the action of the spring 116.

[0049] To ensure that the ferrule assembly 11 does not wobble inside the wire end plug 4, when the fixing sleeve 114 is embedded in the wire end plug 4, the fixing plug 115 is inserted into the wire end plug 4 corresponding to the fixing sleeve 114. One end of the fixing plug 115 inserted into the wire end plug 4 is fitted over the fixing sleeve 114 and fits tightly, while the second spring buckle 117 at the other end fits tightly with the inner wall of the wire end plug 4 after being inserted into the wire end plug 4, that is, the fixing plug 115 is locked in the wire end plug 4, thereby fixing the fixing sleeve 114.

[0050] When the fixing mechanism 113 is inserted into the wire connector 4, the ceramic ferrule 111 is also inserted into the optical module socket 21. Due to the pushing force of the spring 116 inside the ferrule assembly 11, the end face of the ceramic ferrule 111 will fit tightly against the optical module 2. Furthermore, the ceramic ferrule 111 forms an elastic contact with the optical module 2 through the internal spring 116. Therefore, most of the force generated during the insertion and removal of the wire connector 4 is directly transmitted to the PCB1 by the board base 3 and will not directly act on the optical module 2, thus ensuring the stability and reliability of the entire connector.

[0051] To prevent the ceramic ferrule 111 from impacting the optical module socket 21 during blind or misinsertion, the end face of the ceramic ferrule 111 is located inside the cavity of the wire plug 4. Thus, when the wire plug 4 is inserted into the board base 3, the end of the wire plug 4 contacts the board base 3 first. Even if misinsertion occurs, the ceramic ferrule 111 will not collide, thus avoiding damage to the ceramic ferrule 111.

[0052] The above description is merely a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. Those skilled in the art will understand that the form in this embodiment is not limited thereto, nor is the adjustment method limited thereto. It is understood that other improvements and variations directly derived or conceived by those skilled in the art without departing from the basic concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A photoelectric conversion connector, characterized in that, include: An optical module, including an optical module socket, is fixed on a PCB and is used to convert optical and electrical signals. The board end base is sleeved on the outside of the optical module and fixedly connected to the PCB; The wire end plug is inserted into the board end base and has a ferrule assembly inside it. The ferrule assembly includes a ceramic ferrule that is inserted into the optical module socket, a metal sleeve fitted onto one end of the ceramic ferrule, a fixing mechanism for fixing the ferrule to the wire end plug, and a spring, one end of the spring being connected to the metal sleeve and the other end being connected to the fixing mechanism.

2. The photoelectric conversion connector as described in claim 1, characterized in that, The device includes a correction device that is inserted into and cooperates with the plate end base. The correction device includes a correction part and a positioning part. The outer wall of the correction part is tightly fitted with the inner wall of the plate end base. The positioning part is sleeved on the outside of the optical module socket and the inner wall of the positioning part is tightly fitted with the outer wall of the optical module socket.

3. The photoelectric conversion connector as described in claim 1, characterized in that, The optical module includes an optical chip and a lens.

4. The photoelectric conversion connector as described in claim 1, characterized in that, It includes an electrical connector, which is L-shaped, with one end embedded in the board end base and the other end fixedly connected to the PCB.

5. The photoelectric conversion connector as described in claim 4, characterized in that, The plug has an electrical socket inside that engages with the electrical pins, and the electrical socket is detachably connected to the plug.

6. The photoelectric conversion connector as described in claim 5, characterized in that, The outer wall of the plug has a viewing window for disassembling the electrical socket.

7. The photoelectric conversion connector as described in claim 1, characterized in that, It includes a grounding plate, which is T-shaped, with one end fixedly connected to the board end base and the other end fixedly connected to the PCB.

8. The photoelectric conversion connector as described in claim 1, characterized in that, The plate end base is provided with a slot, and the wire end plug is provided with a first spring buckle that engages with the slot.

9. A photoelectric conversion connector as described in claim 8, characterized in that, A secondary clip is slidably connected to the plug end of the cable. One end of the secondary clip abuts against the first snap fastener to prevent the first snap fastener from coming loose from the slot.

10. A photoelectric conversion connector as described in claim 1, characterized in that, The inner walls of the plate end base are respectively provided with limiting grooves of different heights. The two side walls of the wire end plug are respectively provided with limiting ribs of different heights corresponding to the two limiting grooves. The limiting ribs are inserted into the limiting grooves.

11. A photoelectric conversion connector as described in claim 1, characterized in that, The end face of the ceramic ferrule is located inside the cavity of the wire plug.

12. The photoelectric conversion connector as described in claim 1, characterized in that, The outer wall of the board end base connected to the PCB is provided with multiple positioning posts that are fixedly connected to the PCB.

13. The photoelectric conversion connector as described in claim 1, characterized in that, The fixing mechanism includes a fixing sleeve and a fixing plug. The fixing sleeve is fitted on the outside of the metal sleeve and the bottom surface of its inner cavity is fixedly connected to one end of the spring. One end of the fixing plug is fitted on the outside of the fixing sleeve and fits tightly, and the other end is provided with a second spring buckle that fits tightly with the inner wall of the wire end plug.

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