Modular automotive fiber optic connector based on standard fakra housing
Patent Information
- Application Number
- CN202522471244.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-21
AI Technical Summary
不过，虽然光纤通信技术在其他通讯领域中有着较为成熟的应用，但在智能汽车领域中，由于应用场景的差异以及数据传输特点的不同，使得其他领域中的成熟技术往往无法直接转用到汽车上，需要进行针对性地设计和改进，导致连接器的结构、生产工艺以及生产设备需要重新设计，造成连接器应用成本的增加
[0018]总体而言，通过本实用新型所构思的以上技术方案与现有技术相比，具有的有益效果包括：
Smart Images
Figure CN224922055U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive connector technology, specifically relating to a modular automotive fiber optic connector based on a standard Fakra housing. Background Technology
[0002] In the automotive industry, wiring harnesses are the main network of automotive circuits and play a very important role in the operation of automotive systems. Connectors are often required to enable conduction between different wiring harnesses and devices.
[0003] Fakra connectors are RF (radio frequency) connectors that typically use coaxial cables for signal transmission. They are widely used in the automotive industry, primarily in in-vehicle audio, navigation, and video systems. Extensive application has demonstrated that Fakra connectors are waterproof, shockproof, and interference-resistant, making them well-suited for the working environment of automotive applications.
[0004] However, with the development of automotive electronics technology, the number of electronic devices in cars is increasing, and the performance requirements for wiring harnesses are also becoming more demanding. For example, a single 4K camera can achieve a data transmission rate exceeding 10Gbps at 60FPS, while LiDAR can reach 1Gbps. The total bandwidth requirement for the vehicle's backbone network is expected to reach 25-50Gbps. Faced with such a massive data transmission demand, traditional cable communication methods are proving unsustainable, suffering from bandwidth bottlenecks, complex wiring, excessive weight, and insufficient anti-interference capabilities, making it difficult to meet the data transmission needs of intelligent connected vehicles.
[0005] In contrast, fiber optic communication technology possesses inherent advantages such as high bandwidth, low loss, resistance to electromagnetic interference, light weight, and small size, making it the preferred solution for large data transmissions and an ideal choice for upgrading intelligent connected vehicle communication systems. However, while fiber optic communication technology has mature applications in other communication fields, in the field of intelligent vehicles, due to differences in application scenarios and data transmission characteristics, mature technologies from other fields often cannot be directly transferred to automobiles. Targeted design and improvements are required, leading to redesigns of connector structures, manufacturing processes, and production equipment, thus increasing connector application costs. Utility Model Content
[0006] In response to one or more of the above-mentioned defects or improvement needs of the prior art, this utility model provides a modular vehicle-mounted fiber optic connector based on a standard Fakra housing. It can complete the fiber optic connector setup based on the existing standard Fakra housing, meet the optical transmission requirements of vehicle-mounted connectors, and make full use of the existing mature production line of Fakra connectors, making it suitable for large-scale automated production.
[0007] To achieve the above objectives, this utility model provides a modular vehicle-mounted fiber optic connector based on a standard Fakra housing, including a male connector and a female connector; the male connector includes a first housing and a first optical terminal; the female connector includes a second housing and a second optical terminal; The first housing and the second housing are respectively the male and female housings of a standard Fakra connector; both housings have an equal number of terminal cavities, and both housings are provided with terminal locking components; The first optical terminal corresponds one-to-one with the terminal cavity in the first housing, and the second optical terminal corresponds one-to-one with the terminal cavity in the second housing; the two types of optical terminals each have a ferrule that can be connected to an optical fiber, and can be locked by the terminal locking member of a standard Fakra connector after being embedded in the terminal cavity of the corresponding housing, and the first optical terminal can be connected to the second optical terminal after being inserted into the first housing.
[0008] As a further improvement of this utility model, both types of optical terminals include an end cap, a ferrule, a spring, and a terminal housing; The terminal housing has an assembly hole at one end and is used to connect an optical cable and insert an optical fiber at the other end. The ferrule is used to connect to the optical fiber, and its tail end is assembled with a spring and then inserted into the assembly hole. The end cap is detachably connected to the end of the terminal housing with the assembly hole and can axially limit the ferrule after the terminal housing is connected. The first optical terminal also includes a ferrule sleeve; the ferrule sleeve is fitted onto the front end of the ferrule in the first optical terminal and can be axially limited by the end cap; the end face of the ferrule in the first optical terminal is located in the ferrule sleeve, and the ferrule in the second optical terminal can extend into the ferrule sleeve and connect with the ferrule in the first optical terminal after the male and female connectors are inserted.
[0009] As a further improvement of this utility model, at least one optical terminal also includes a lead tube; one end of the lead tube is connected to the tail end of the insert, and the other end extends into the terminal housing, and the spring is sleeved on the outer periphery of the lead tube. and / or At least one optical terminal includes a crimping ring; one end of the crimping ring can be connected to one end of the terminal housing away from the end cap, and the other end of the crimping ring is used to crimp and fix the end of the optical cable.
[0010] As a further improvement of this utility model, a first stepped hole is provided in the end cap of the first optical terminal; the first stepped hole includes a first hole segment and a second hole segment with an inner diameter smaller than that of the first hole segment; the inner diameter of the first hole segment is not less than the outer diameter of the ferrule sleeve, and the inner diameter of the second hole segment is smaller than the outer diameter of the ferrule sleeve and larger than the outer diameter of the ferrule in the second optical terminal. The end cap of the second optical terminal has a second stepped hole in the middle, the second stepped hole includes a third hole segment and a fourth hole segment with an inner diameter larger than the third hole segment; the insert of the second optical terminal passes through the third hole segment and extends into the fourth hole segment with its conductive end having an insert end face, and the outer diameter of the conductive end is smaller than the inner diameter of the second hole segment; and the inner diameter of the fourth hole segment is larger than the outer diameter of the end cap of the first optical terminal; then the end cap of the first optical terminal can be inserted into the end cap of the second optical terminal after the two housings are plugged in, and the insert of the second optical terminal extends into the insert sleeve and abuts against the insert of the first optical terminal to conduct.
[0011] As a further improvement of this utility model, the terminal locking component is a limiting lock, and an embedding groove is provided on each of the two housings; Correspondingly, an annular limiting groove is formed on the outer periphery of the middle part of the two types of optical terminals. The annular limiting groove is aligned with the embedding groove when the optical terminal is embedded in the terminal cavity. Then, the limiting latch can pass through the embedding groove and be engaged in the annular limiting groove.
[0012] As a further improvement of this utility model, at least one optical terminal also includes a tail sleeve; the tail sleeve can be sleeved on the outer periphery of the end of the optical cable and connected to the tail end of the corresponding optical terminal.
[0013] As a further improvement of this utility model, at least one optical terminal is provided with a sealing ring at its tail end; the sealing ring can be sealed and assembled with the tail end of the terminal cavity after the optical terminal is embedded in the terminal cavity.
[0014] As a further improvement of this utility model, both the first housing and the second housing have one, two, or four terminal cavities.
[0015] As a further improvement of this utility model, the end of the first housing used to insert into the second housing is provided with a first locking member, and a second locking member is provided on the second housing. The first locking member can lock itself to the second locking member after the male and female heads are inserted and connected.
[0016] As a further improvement of this utility model, the outer diameter of the end cap of the first optical terminal is smaller than the inner diameter of the end cap of the second optical terminal, and the ferrule end face of the second optical terminal does not protrude beyond the end cap of the second optical terminal after the second optical terminal is assembled; and The end cap of the first optical terminal can be coaxially embedded in the end cap of the second optical terminal when the male and female connectors are plugged in.
[0017] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.
[0018] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include: This invention relates to a modular automotive fiber optic connector based on a standard Fakra housing. It includes a first optical terminal and a second optical terminal that are compatible with the standard Fakra housing. By utilizing the design of the two optical terminals, a fiber optic connector based on a standard Fakra housing is obtained. This allows the manufacturing of the fiber optic connector to rely on existing Fakra connector production lines. By adapting the shape of the fiber optic connector to the existing Fakra connector, the electro-optical conversion of conventional Fakra connectors can be achieved. This simplifies the conversion process of fiber optic connectors in conventional Fakra connector application fields (such as the automotive field) and reduces the application cost of fiber optic connectors.
[0019] This utility model discloses a modular automotive fiber optic connector based on a standard Fakra housing. The fiber optic connector is designed based on the standard size housing of the Fakra connector. By utilizing the compatibility design between the modular optical terminals and the standard Fakra housing, a fiber optic connector with the external dimensions of a Fakra connector can be obtained. This allows the fiber optic connector to possess the waterproof, shockproof, and anti-interference characteristics of the Fakra connector, while also significantly improving the connector's signal transmission capability. It fully meets the usage requirements in automotive application scenarios and has excellent application prospects. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of a modular vehicle-mounted fiber optic connector based on a standard Fakra housing according to an embodiment of this utility model; Figure 2 This is a schematic diagram of the male connector structure of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 3 This is a schematic diagram of the disassembly structure of the male connector of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 4 This is a schematic diagram of the female head structure of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 5 This is a schematic diagram of the disassembly structure of the female connector of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 6This is a structural disassembly diagram of the first optical terminal of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 7 This is a structural disassembly diagram of the second optical terminal of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 8 This is a cross-sectional view of the overall structure of the modular vehicle-mounted fiber optic connector in this embodiment of the present invention; Figure 9 , Figure 10 This is a structural schematic diagram of the standard Fakra shell in two other optional embodiments of this utility model; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100, male connector; 200, female connector; 300, optical fiber cable; 1. First housing; 2. First optical terminal; 3. Second housing; 4. Second optical terminal; 5. First terminal locking element; 6. Second terminal locking element; 101. First embedding groove; 102. First locking element; 103. First terminal cavity; 201. First end cap; 202. First insert; 203. First spring; 204. First terminal housing; 2041. First annular limiting groove; 2042. First sealing ring; 205. First adhesive tube; 206. First crimping ring; 207. Insert sleeve; 208. First tail sleeve; 301. Second embedding groove; 302. Second locking element; 303. Second terminal cavity; 401. Second end cap; 402. Second insert; 403. Second spring; 404. Second terminal housing; 4041. Second annular limiting groove; 4042. Second sealing ring; 405. Second adhesive tube; 406. Second crimping ring; 407. Second tail sleeve. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0023] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0024] Furthermore, unless otherwise expressly defined, the terms "first" and "second" 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0027] Below, for reference Figures 1-10 The present invention describes a modular vehicle-mounted fiber optic connector based on a standard Fakra housing according to a preferred embodiment.
[0028] like Figure 1As shown, in a preferred embodiment, the modular automotive fiber optic connector based on a standard Fakra housing includes a male connector 100 and a female connector 200. The male connector 100 includes a first housing 1 and a first optical terminal 2; the female connector 200 includes a second housing 3 and a second optical terminal 4. As the core design of this utility model, the aforementioned first housing 1 and second housing 3 are respectively the male head housing and female head housing of the standard Fakra connector.
[0029] It should be noted that the "standard Fakra connector" involved in this utility model refers to the radio frequency connector widely used in the automotive field in the prior art, which uses electrical transmission to achieve data transmission. In the preferred embodiment, a fiber optic connector based on "optical transmission" is made based on the male / female shell of the "electrical transmission connector". This utilizes the relatively mature Fakra connector production line, reducing the adaptation and improvement process required for the production and application of automotive fiber optic connectors, and improving the production efficiency and renewal process of automotive fiber optic connectors.
[0030] Specifically, in the preferred embodiment, the first housing 1 and the second housing 3 have an equal number of terminal cavities, and both housings are provided with terminal locking elements.
[0031] The first optical terminal 2 corresponds one-to-one with the terminal cavity in the first housing 1, and the second optical terminal 4 corresponds one-to-one with the terminal cavity in the second housing 3. The two types of optical terminals each have a ferrule that can be connected to an optical fiber, and can be locked by a terminal locking member after being embedded in the terminal cavity of the corresponding housing. The first optical terminal 2 can achieve optical conduction with the second optical terminal 4 after being inserted into the first housing 1 into the second housing 3.
[0032] It's easy to understand that the fiber optic connector, based on the standard Fakra housing and two different optical terminal designs, undergoes the same insertion process as the Fakra connector with the same housing specifications. Furthermore, since the connector's housing dimensions remain unchanged, the connector converted from electrical to optical can be quickly replaced in its original location. This makes it suitable not only for the production of new equipment (such as newly manufactured vehicles) but also for the upgrading of communication systems in older equipment (such as existing vehicles using Fakra connectors), greatly expanding the application scope of automotive fiber optic connectors.
[0033] Furthermore, for the first optical terminal 2 and the second optical terminal 4 in the preferred embodiment, both optical terminals include an end cap, a ferrule, a spring, and a terminal housing, namely, the first end cap 201, the first ferrule 202, the first spring 203, and the first terminal housing 204 of the first optical terminal 2; and the second end cap 401, the second ferrule 402, the second spring 403, and the second terminal housing 404 of the second optical terminal 4.
[0034] For both types of optical terminals, one end of the terminal housing has an assembly hole for assembling the ferrule, and the other end is used to connect the optical cable and access the optical fiber. Meanwhile, the ferrule is used to connect to the optical fiber, and its tail end is assembled with a spring and then inserted into the assembly hole; the end cap is detachably connected to the end of the terminal housing with the assembly hole, and can axially limit the ferrule after connecting the terminal housing.
[0035] Furthermore, the first optical terminal 2 also includes a ferrule sleeve 207, which is sleeved on the front end of the ferrule (i.e., the first ferrule 202) in the first optical terminal 2 and can be axially limited by the end cap (i.e., the first end cap 201).
[0036] Furthermore, the ferrule end face in the first optical terminal 2 is located in the ferrule sleeve 207 (that is, after the first end cap 201 is connected to the first terminal housing 204, the ferrule end face of the first ferrule 202 does not extend out of the ferrule sleeve 207), and the ferrule in the second optical terminal 4 (that is, the second ferrule 402) can extend into the ferrule sleeve 207 and connect with the ferrule in the first optical terminal 2 (that is, the first ferrule 202) after the male head 100 and the female head 200 are plugged in.
[0037] It is understandable that the axial limiting between the first end cap 201 and the ferrule sleeve 207 can be achieved by providing a stepped through hole in the ferrule sleeve 207. In this case, the inner diameter of the larger diameter end of the stepped through hole is larger than the outer diameter of the ferrule sleeve 207, and the inner diameter of the smaller diameter end of the stepped through hole is between the outer diameter of the ferrule sleeve 207 and the outer diameter of the first ferrule 202. In this way, the axial limiting of the ferrule sleeve 207 in the first end cap 201 can be guaranteed, and the insertion and docking of the second ferrule 402 in the ferrule sleeve 207 can also be achieved.
[0038] More specifically, in actual setup, the outer diameter of the second insert 402 is not greater than the outer diameter of the first insert 202, and preferably the outer diameters of the two are the same.
[0039] More specifically, at least one optical terminal also includes a lead tube, for example in Figure 6 , Figure 7 In the preferred embodiment shown, both the first optical terminal 2 and the second optical terminal 4 are provided with adhesive inlet tubes, namely the first adhesive inlet tube 205 and the second adhesive inlet tube 405. In actual installation, one end of the adhesive inlet tube is connected to the tail end of the insert, and the other end extends into the terminal housing, with a spring sleeved on the outer periphery of the adhesive inlet tube.
[0040] As another example, in actual setups, at least one optical terminal includes a crimp ring, for example in Figure 6 , Figure 7In the preferred embodiment shown, both the first optical terminal 2 and the second optical terminal 4 are provided with crimping rings, namely the first crimping ring 206 and the second crimping ring 406. In actual installation, one end of the crimping ring can be connected to the end of the terminal housing away from the end cap, and the other end is used to crimp and fix the end of the optical cable 300, thereby realizing the connection and fixation between the optical cable 300 and the corresponding optical terminal.
[0041] Preferably, for the aforementioned crimping ring, the connection between it and the tail end of the terminal housing is a threaded connection.
[0042] Furthermore, a first stepped hole is provided in the end cap (i.e., the first end cap 201) of the first optical terminal 2; the first stepped hole includes a first hole segment and a second hole segment with an inner diameter smaller than the first hole segment; the inner diameter of the first hole segment is not less than the outer diameter of the ferrule sleeve 207, and the inner diameter of the second hole segment is smaller than the outer diameter of the ferrule sleeve 207.
[0043] Meanwhile, a second stepped hole is provided in the end cap (i.e., the second end cap 401) of the second optical terminal 4. The second stepped hole includes a third hole segment and a fourth hole segment with an inner diameter larger than that of the third hole segment. The second ferrule 402 of the second optical terminal 4 passes through the third hole segment and extends into the fourth hole segment with its conductive end having a ferrule end face. The outer diameter of the conductive end is smaller than the inner diameter of the second hole segment. The inner diameter of the fourth hole segment is larger than the outer diameter of the first end cap 201. Then, the first end cap 201 can be inserted into the second end cap 401 after the male head 100 and the female head 200 are plugged in, so that the second ferrule 402 extends into the ferrule sleeve 207 and abuts against the first ferrule 202 to conduct.
[0044] Obviously, by utilizing the aforementioned design of the two optical terminal structures, a reliable connection can be achieved between the first optical terminal 2 and the second optical terminal 4, and based on the guiding setting of the ferrule sleeve 207, the reliability of the connection between the first ferrule 202 and the second ferrule 402 is ensured.
[0045] Furthermore, in order to reliably fix the first optical terminal 2 and the second optical terminal 4 in the corresponding housings, the terminal locking member in the preferred embodiment is a limiting lock, and the first housing 1 and the second housing 3 are respectively provided with embedding grooves, namely the first embedding groove 101 and the second embedding groove 301, so that the first terminal locking member 5 and the second terminal locking member 6 can pass through the corresponding embedding grooves and match with the corresponding optical terminals embedded in the housings, so as to realize the axial locking of the two optical terminals.
[0046] Specifically, annular limiting grooves are formed on the outer periphery of the middle portion of both optical terminals, namely, a first annular limiting groove 2041 and a second annular limiting groove 4041. The two annular limiting grooves align with the insertion grooves when the optical terminals are inserted into the terminal cavities. That is, the first annular limiting groove 2041 aligns with the first insertion groove 101 after the first optical terminal 2 is inserted into the first terminal cavity 103, and the second annular limiting groove 4041 aligns with the second insertion groove 301 after the second optical terminal 4 is inserted into the second terminal cavity 303. Subsequently, each limiting latch can pass through the corresponding insertion groove and engage in the annular limiting groove, thereby achieving axial locking of the two optical terminals within the two Fakra housings.
[0047] More preferably, at least one optical terminal further includes a tail sleeve, for example... Figure 6 , Figure 7 Both types of optical terminals shown include a tail sleeve, namely the first tail sleeve 208 in the first optical terminal 2 and the second tail sleeve 407 in the second optical terminal 4. In actual installation, the tail sleeve can be fitted around the outer periphery of the end of the optical cable 300 and connected to the tail end of the optical terminal.
[0048] by Figure 8 Taking the illustrated scheme as an example, the front end of the tail sleeve can be correspondingly embedded in the inner cavity of the male and female housings, and further connected to the outer periphery of the first crimping ring 206 and the second crimping ring 406. More specifically, the connection between the tail sleeve and the tail end of the optical terminal can be an interference fit or a snap-fit (equivalent to the connection of the two crimping rings at the tail end of the terminal housing forming an annular snap-fit surface, which is the front end face of the crimping ring; in this case, an annular protrusion is provided in the inner cavity of the end of the tail sleeve, and can pass over the annular snap-fit surface through the annular protrusion and be written on the outer periphery of the optical terminal).
[0049] More preferably, in order to achieve a sealing effect between the tail ends (the ends opposite to the interlocking ends) of the male connector 100 and the female connector 200, a sealing ring is preferably provided at the tail end of at least one optical terminal, for example... Figure 6 The first sealing ring 2042 shown is disposed on the outer periphery of the tail end of the first terminal housing 204 and Figure 7 The arrangement shown is a second sealing ring 4042 on the outer periphery of the tail end of the second terminal housing 404. In actual assembly, the aforementioned sealing ring can be installed and sealed to the tail end of the terminal cavity after the optical terminal is inserted into the terminal cavity. This achieves end sealing between each optical terminal and its corresponding housing, improving the end sealing effect after the male connector 100 and female connector 200 are assembled.
[0050] It is understandable that the specifications of the standard Fakra housing can be changed depending on the application location and application requirements of the connector. In this case, the first optical terminal 2 and the second optical terminal 4 that conform to the aforementioned structural design can be designed and selected by combining the size specifications of different standard Fakra housings.
[0051] As an example, both the first housing 1 and the second housing 3 have a terminal cavity (e.g. Figure 9 As shown), two terminal cavities (e.g.) Figure 2 , Figure 4 (as shown) or four terminal cavities (e.g.) Figure 10 As shown in the image).
[0052] More preferably, the end of the first housing 1 used to insert into the second housing 3 is provided with a first locking member 102, and a second locking member 302 is provided on the second housing 3. The first locking member 102 can lock itself to the second locking member 302 after the male head 100 and the female head 200 are inserted and connected.
[0053] In a preferred embodiment, the first locking member 102 is an elastic buckle, and the second locking member 302 is a slot. The elastic buckle can be compressed and deformed during the insertion of the male head 100 and the female head 200, and fits perfectly into the slot after being inserted into place.
[0054] This utility model discloses a modular automotive fiber optic connector based on a standard Fakra housing. The fiber optic connector is designed based on the standard size housing of the Fakra connector. By utilizing the compatibility design between the modular optical terminals and the standard Fakra housing, a fiber optic connector with the external dimensions of a Fakra connector can be obtained. This allows the fiber optic connector to possess the waterproof, shockproof, and anti-interference characteristics of the Fakra connector, while also significantly improving the connector's signal transmission capability. It fully meets the usage requirements in automotive application scenarios and has excellent application prospects.
[0055] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A modular automotive fiber optic connector based on a standard Fakra housing, comprising a male connector and a female connector; the male connector comprising a first housing and a first optical terminal; the female connector comprising a second housing and a second optical terminal; characterized in that, The first housing and the second housing are respectively the male and female housings of a standard Fakra connector; both housings have an equal number of terminal cavities, and both housings are provided with terminal locking components; The first optical terminal corresponds one-to-one with the terminal cavity in the first housing, and the second optical terminal corresponds one-to-one with the terminal cavity in the second housing; the two types of optical terminals each have a ferrule that can be connected to an optical fiber, and can be locked by the terminal locking member of a standard Fakra connector after being embedded in the terminal cavity of the corresponding housing, and the first optical terminal can be connected to the second optical terminal after being inserted into the first housing.
2. The modular automotive fiber optic connector based on a standard Fakra housing according to claim 1, characterized in that, Both types of optical terminals include an end cap, a ferrule, a spring, and a terminal housing; The terminal housing has an assembly hole at one end and is used to connect an optical cable and insert an optical fiber at the other end. The ferrule is used to connect to the optical fiber, and its tail end is assembled with a spring and then inserted into the assembly hole. The end cap is detachably connected to the end of the terminal housing with the assembly hole and can axially limit the ferrule after the terminal housing is connected. The first optical terminal also includes a ferrule sleeve; the ferrule sleeve is fitted onto the front end of the ferrule in the first optical terminal and can be axially limited by the end cap; the end face of the ferrule in the first optical terminal is located in the ferrule sleeve, and the ferrule in the second optical terminal can extend into the ferrule sleeve and connect with the ferrule in the first optical terminal after the male and female connectors are inserted.
3. The modular automotive fiber optic connector based on a standard Fakra housing according to claim 2, characterized in that, At least one optical terminal also includes a lead tube; one end of the lead tube is connected to the tail end of the insert, the other end extends into the terminal housing, and the spring is sleeved on the outer periphery of the lead tube; and / or At least one optical terminal includes a crimping ring; one end of the crimping ring can be connected to one end of the terminal housing away from the end cap, and the other end of the crimping ring is used to crimp and fix the end of the optical cable.
4. The modular automotive fiber optic connector based on a standard Fakra housing according to claim 2, characterized in that, The first optical terminal has a first stepped hole in its end cap; the first stepped hole includes a first hole segment and a second hole segment with an inner diameter smaller than that of the first hole segment; the inner diameter of the first hole segment is not less than the outer diameter of the ferrule sleeve, and the inner diameter of the second hole segment is smaller than the outer diameter of the ferrule sleeve but larger than the outer diameter of the ferrule in the second optical terminal. The end cap of the second optical terminal has a second stepped hole in the middle, the second stepped hole includes a third hole segment and a fourth hole segment with an inner diameter larger than the third hole segment; the insert of the second optical terminal passes through the third hole segment and extends into the fourth hole segment with its conductive end having an insert end face, and the outer diameter of the conductive end is smaller than the inner diameter of the second hole segment; and the inner diameter of the fourth hole segment is larger than the outer diameter of the end cap of the first optical terminal; then the end cap of the first optical terminal can be inserted into the end cap of the second optical terminal after the two housings are plugged in, and the insert of the second optical terminal extends into the insert sleeve and abuts against the insert of the first optical terminal to conduct.
5. The modular automotive fiber optic connector based on a standard Fakra housing according to any one of claims 1 to 4, characterized in that, The terminal locking component is a limiting latch, and an embedding groove is provided on each of the two housings; Correspondingly, an annular limiting groove is formed on the outer periphery of the middle part of the two types of optical terminals. The annular limiting groove is aligned with the embedding groove when the optical terminal is embedded in the terminal cavity. Then, the limiting latch can pass through the embedding groove and be engaged in the annular limiting groove.
6. The modular automotive fiber optic connector based on a standard Fakra housing according to any one of claims 1 to 4, characterized in that, At least one optical terminal also includes a tail sleeve; the tail sleeve can be fitted around the outer periphery of the end of the optical cable and connected to the tail end of the corresponding optical terminal.
7. The modular automotive fiber optic connector based on a standard Fakra housing according to any one of claims 1 to 4, characterized in that, At least one optical terminal is provided with a sealing ring at its tail end; the sealing ring can be sealed and assembled with the tail end of the terminal cavity after the optical terminal is embedded in the terminal cavity.
8. The modular automotive fiber optic connector based on a standard Fakra housing according to any one of claims 1 to 4, characterized in that, Both the first housing and the second housing have one, two, or four terminal cavities.
9. The modular automotive fiber optic connector based on a standard Fakra housing according to any one of claims 1 to 4, characterized in that, The first housing is provided with a first locking member at the end for inserting into the second housing, and a second locking member is provided on the second housing. The first locking member can lock itself to the second locking member after the male and female connectors are inserted and connected.
10. The modular automotive fiber optic connector based on a standard Fakra housing according to any one of claims 1 to 4, characterized in that, The outer diameter of the end cap of the first optical terminal is smaller than the inner diameter of the end cap of the second optical terminal, and the ferrule end face of the second optical terminal does not protrude beyond the end cap of the second optical terminal after assembly; and The end cap of the first optical terminal can be coaxially embedded in the end cap of the second optical terminal when the male and female connectors are plugged in.