Optical fiber connector, optical communication network system and vehicle

Abstract

The utility model discloses an optical fiber connector, an optical communication network system and a vehicle. The optical fiber connector comprises a first joint and a second joint. The first joint and the second joint respectively comprise a shell and an insertion core, a mounting cavity is defined in the shell, the insertion core penetrates through the mounting cavity, one of the first joint and the second joint is provided with a plurality of first limiting structures, the other one is provided with a plurality of second limiting structures, the optical fiber connector has a matching state, and in the matching state, the first limiting structures are matched with the second limiting structures. The insertion core of the first connector is in butt joint with the insertion core of the second connector, and each first limiting structure is in radial limiting fit with the corresponding second limiting structure. According to the optical fiber connector, optical signal transmission is stable, and connection reliability is high.

Description

Technical Field

[0001] The utility model relates to optical cable connection equipment, in particular to an optical fiber connector, an optical communication network system and a vehicle. Background Art

[0002] Fiber optic connector is a connector used to connect optical fibers, mainly used to achieve connection and signal transmission between optical fibers. It includes a first connector and a second connector, and the transmission of optical signals is achieved through the connection of the first connector and the second connector. Fiber optic connector is an indispensable component of optical fiber communication, and its performance and quality play a vital role in the quality and stability of optical fiber communication.

[0003] Some existing fiber optic connectors are not shockproof enough. When they are used in vehicles, when encountering bumpy road conditions, the two connectors of the fiber optic connector will not dock properly, causing the optical fibers of the two connectors to be misaligned, thereby causing unstable optical signal transmission.

[0004] Therefore, there is room for improvement in optical fiber connectors. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides, on one hand, an optical fiber connector, which has stable optical signal transmission and high connection reliability.

[0006] Another aspect of the utility model provides an optical communication network system having the optical fiber connector.

[0007] The utility model also provides a vehicle having the optical fiber connector or the optical communication network system.

[0008] The optical fiber connector according to the first embodiment of the utility model includes a first connector and a second connector. The first connector and the second connector respectively include a housing and a core, the housing defines an installation cavity, the core is inserted into the installation cavity, one of the first connector and the second connector is formed with a plurality of first limiting members, and the other is formed with a plurality of second limiting members; the optical fiber connector has a mating state, in which the core of the first connector is mated with the core of the second connector, and each of the first limiting members and the corresponding second limiting member are radially limited and matched.

[0009] According to the optical fiber connector of the embodiment of the utility model, the radial alignment of the ferrules of the two connectors can be achieved through multi-stage alignment, which is beneficial to effectively improve the alignment concentricity of the two ferrules and makes it convenient for the optical fiber connector to be used in complex usage environments; for example, when the optical fiber connector is used in a vehicle, since the first pin and the second pin have good alignment concentricity, it is convenient to meet the higher transmission requirements of the optical signal.

[0010] In some embodiments, there are three or more first limiting structures and two or more second limiting structures, and a plurality of the first limiting structures are arranged at intervals along the radial direction, and a plurality of the second limiting structures are arranged at intervals along the radial direction.

[0011] In some embodiments, the core includes a sleeve and a pin, the sleeve is arranged outside the pin, one of the first limiting structures is formed on the outer peripheral wall corresponding to the sleeve, and one of the second limiting structures is formed on the peripheral wall corresponding to the installation cavity. In the mating state, the pin of the first connector is connected to the pin of the second connector, and one of the sleeves extends into the other installation cavity and is radially limited with the peripheral wall of the installation cavity.

[0012] In some embodiments, the optical fiber connector further includes: a buffer seal, which is sleeved outside one of the first limiting structures, and in the mating state, the buffer seal is sealed between the surrounding wall of the corresponding installation cavity and the corresponding sheath.

[0013] In some embodiments, the core includes a sheath and a pin, the sheath is sleeved outside the pin, one of the second limiting structures is formed as a matching accessory provided on the corresponding sheath and sleeved outside the corresponding pin, one of the first limiting structures is formed on the outer peripheral wall corresponding to the pin, in the mating state, the pin of the first connector is connected to the pin of the second connector, the matching accessory is sleeved outside the other pin and radially limited with the other pin, so that the pin of the first connector and the pin of the second connector are radially limited by the matching accessory.

[0014] In some embodiments of the optical fiber connector, a cross section of the counter fitting is formed into an open ring structure.

[0015] In some embodiments, one of the second limiting structures is formed on the outer peripheral wall of the corresponding shell, and one of the first limiting structures is formed on the peripheral wall of the corresponding installation cavity. In the mating state, one of the shells extends into the other installation cavity and cooperates with the peripheral wall of the installation cavity in radial limiting manner.

[0016] In some embodiments of the optical fiber connector, an elastic buckle is provided on the outer peripheral wall of one of the shells, and a clamping hole is formed on the peripheral wall of the other installation cavity. In the mating state, the elastic buckle extends into the corresponding installation cavity and is clamped in the clamping hole.

[0017] In some embodiments, the core includes a sleeve and a pin, the sleeve is arranged outside the pin, and at least one of the first connector and the second connector further includes: a first elastic member, the first elastic member is arranged in the sleeve and is used to apply an elastic force to the pin to extend the sleeve toward the mating end of the shell.

[0018] In some embodiments, at least one of the first connector and the second connector further includes: a second elastic member and a limiting member, a first positioning protrusion is protruding on the peripheral wall of the installation cavity, a second positioning protrusion is protruding on the peripheral wall of the plug, the second elastic member is arranged between the shell and the plug and stops between the first positioning protrusion and the second positioning protrusion, the second elastic member applies an elastic force to the first positioning protrusion and the second positioning protrusion to move away from each other in the axial direction of the plug; a mounting opening connected to the installation cavity is formed on the shell, the limiting member is detachably plugged into the installation cavity through the mounting opening, and the limiting member and the plug and the shell are respectively limited in the axial direction of the plug.

[0019] In some embodiments of the optical fiber connector, the limiting member includes at least one limiting portion, the installation port includes at least one opening, a first limiting groove is formed on the outer peripheral wall of the insert, and the limiting portion is limitedly matched with the opening and the first limiting groove.

[0020] In some embodiments, the first limiting groove is formed as an annular groove, the limiting portions and the openings are respectively multiple, the multiple openings are arranged at intervals along the circumference of the insert, and the multiple limiting portions are respectively matched with different positions of the first limiting groove.

[0021] In some embodiments of the optical fiber connector, the plurality of openings are located on the same side of the housing, and the plurality of limiting portions are suitable for being plugged into the installation cavity along the same direction from the same side of the housing.

[0022] In some embodiments, the plurality of limiting portions include a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are respectively arranged on both sides of the ferrule in a first direction, and the first direction is perpendicular to the axial direction of the ferrule.

[0023] In some embodiments, the ferrule is clamped between the first limiting portion and the second limiting portion.

[0024] In some embodiments, second limiting grooves are formed on the surfaces of the first limiting portion and the second limiting portion facing each other, and the insert is matched with the second limiting groove so that the first limiting portion and the second limiting portion are respectively matched with the insert in a second direction, and the second direction is perpendicular to the first direction and the axial direction of the insert.

[0025] In some embodiments, the limiting member also includes an installation portion, which is connected to at least one corresponding limiting portion, and the installation portion satisfies at least one of the following conditions: Condition A1, the installation portion is snap-connected to the shell; Condition A2, a third limiting groove is formed on the outer peripheral wall of the shell, and the installation portion is limitedly matched with the third limiting groove.

[0026] In some embodiments, the mounting portion satisfies conditions A1 and A2, and the mounting portion includes a first part and two second parts arranged at opposite ends of the first part. In the mating direction corresponding to the limiting portion, the two second parts respectively extend obliquely in directions away from each other, and the first part and the second part are both matched with the third limiting groove so that the mounting portion is clamped in the third limiting groove, and each second part is respectively connected to the shell with a snap.

[0027] In some embodiments, the limit member and the core are respectively limited in a first direction and a second direction, and the limit member and the shell are respectively limited in the first direction and the second direction; or, the limit member is multiple and is arranged at intervals along the axial direction of the core, and the multiple limit members include a first limit member and a second limit member, the first limit member and the shell and the core are respectively limited in the first direction, and the second limit member and the shell and the core are respectively limited in the second direction, wherein the first direction and the second direction are perpendicular and parallel to the cross-section of the core, and the cross-section of the core is perpendicular to the axial direction of the core.

[0028] The optical communication network system according to the second embodiment of the utility model comprises a first optical cable, a second optical cable and a fiber optic connector according to the first embodiment of the utility model, wherein the fiber optic connector is used to connect the first optical cable and the second optical cable.

[0029] The vehicle according to the third aspect of the present invention comprises the optical fiber connector according to the first aspect of the present invention or the optical communication network system according to the second aspect of the present invention.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1is a cross-sectional view of an optical fiber connector of some embodiments of the present utility model;

[0033] Figure 2 is a stereoscopic diagram of optical fiber connectors of some embodiments of the present utility model;

[0034] Figure 3 is a cross-sectional view of a first joint of some embodiments of the present utility model;

[0035] Figure 4 is a cross-sectional view of a second joint in some embodiments of the present utility model;

[0036] Figure 5 It is a schematic diagram of the structure of accessories in some embodiments of the utility model;

[0037] Figure 6 is a stereogram of a first joint of some embodiments of the utility model;

[0038] Figure 7 is a stereogram of a second joint of some embodiments of the utility model;

[0039] Figure 8 It is a schematic diagram of the installation of the limiting member in some embodiments of the utility model;

[0040] Fig. 9 It is a connection diagram of the first joint and the limiting member in some embodiments of the utility model;

[0041] Fig.10 is another connection schematic diagram of the first joint and the limiting member in some embodiments of the utility model;

[0042] Fig.11 It is a cross-sectional view of the ferrule of some embodiments of the utility model;

[0043] Fig.12 It is a stereoscopic diagram of the ferrule of some embodiments of the utility model.

[0044] Fiber Optic Connector 1000

[0045] The first connector 100, the second connector 300, the clamping hole 37,

[0046] Shell 10, first shell 101, second shell 301, installation cavity 11, first installation cavity 111, second installation cavity 312, installation port 12, plug port 12a, first plug port 121a, second plug port 322a, opening 120, first positioning protrusion 13, third limiting groove 14, third positioning protrusion 15, first limiting structure 16, second limiting structure 17, ferrule 20, first ferrule 201, second ferrule 302, central axis L of ferrule, first limiting groove 21, second positioning protrusion 22, cylindrical surface 23, pin 24, first pin 241, second pin 342, mating end 240, cable 25, sheath 26, first sheath 261, second sheath 362, first elastic member 27, placement groove 28, buffer seal 29, second elastic member 30, limit member 40, first limit portion 41, second limit groove 410, second limit portion 42, mounting portion 43, first part 431, second part 432, crimping tube 50, heat shrink tubing 60, elastic buckle 70, and fitting 200. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] It is worth mentioning that the main function of the fiber optic connector is to quickly connect two optical fibers so that the optical signal can be continuous and form an optical path. The two end faces of the optical fiber can be precisely docked through the fiber optic connector, so that the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent. The fiber optic connector usually includes a first connector and a second connector. The cable of the first connector in the fiber optic connector is connected to the cable of the ferrule in the second connector through the ferrule. Therefore, the radial centering ability of the ferrule in the fiber optic connector has a vital influence on the connection effect of the entire fiber optic connector, and will directly affect the transmission quality and stability of the optical signal.

[0051] Reference below Figure 1-Figure 12 The optical fiber connector 1000 according to the first embodiment of the utility model is described.

[0052] According to the optical fiber connector 1000 of the embodiment of the utility model, Figure 1-Figure 2 As shown, it includes a first joint 100 and a second joint 300 .

[0053] like Figure 2 As shown, the first connector 100 and the second connector 300 respectively include a housing 10 and a ferrule 20, wherein an installation cavity 11 is defined in the housing 10, and the ferrule 20 is inserted into the installation cavity 11. As one of the core components of the optical fiber connector 1000, the ferrule 20 mainly supports the optical fiber and provides a precise docking surface to ensure that the optical signal can be efficiently transmitted from one optical fiber to another. To achieve the above purpose, the ferrule 20 can be inserted into the installation cavity 11 of the housing 10, so as to utilize the housing 10 to protect the ferrule 20. Optionally, the housing 10 is usually made of plastic or metal, and has a certain structure and shape, so as to maintain its stability and durability in various environments. The present application does not impose any specific restrictions on the material of the housing 10.

[0054] The optical fiber connector 1000 achieves docking of the internal ferrule 20 through the cooperation of the first connector 100 and the second connector 300. One of the first connector 100 and the second connector 300 is formed with a plurality of first limiting structures 16, and the other of the first connector 100 and the second connector 300 is formed with a plurality of second limiting structures 17. The optical fiber connector 1000 has a mating state, in which the ferrule 20 of the first connector 100 is docked with the ferrule 20 of the second connector 300 to achieve optical signal communication, and each first limiting structure 16 is radially limited and matched with the corresponding second limiting structure 17.

[0055] This arrangement can ensure that the first connector 100 and the second connector 300 maintain a stable plugging effect during the docking process. When multiple first limiting structures 16 and multiple second limiting structures 17 are matched one by one to achieve a joint effect, the limiting effect can be improved, thereby further enhancing the connection stability and reliability of the optical fiber connector 1000. Especially when the optical fiber connector 1000 is used in a vehicle, it can ensure that the two connectors can maintain a stable plugging state when subjected to various external forces, such as vibration, impact, etc., and are not prone to loosening or falling off, thereby ensuring the stability of the optical fiber connector 1000.

[0056] Moreover, the matching of the first connector 100 and the second connector 300 of the optical fiber connector 1000, a first limiting structure 16 and a first limiting structure 17 can realize the first-level radial alignment of the ferrule 20 of the first connector 100 and the ferrule 20 of the second connector 300 during the docking process. The present application provides multiple first limiting structures 16 and multiple second limiting structures 17, and can realize the radial alignment of the ferrule 20 of the first connector 100 and the ferrule 20 of the second connector 300 through multi-level alignment, which is beneficial to effectively improve the alignment concentricity of the ferrule 20 of the first connector 100 and the ferrule 20 of the second connector 300, so that the optical fiber connector 1000 can be used in complex use environments; for example, when the optical fiber connector 1000 is used in a vehicle, since the ferrule 20 of the first connector 100 and the ferrule 20 of the second connector 300 have good alignment concentricity, it is convenient to meet the higher transmission requirements of optical signals.

[0057] In some embodiments, there are three or more first limiting structures 16 and second limiting structures 17, respectively. Multiple first limiting structures 16 are arranged at intervals along the radial direction, and multiple second limiting structures 17 are arranged at intervals along the radial direction. Thus, three or more levels of support and restriction are formed between the first connector 100 and the second connector 300, which improves the alignment accuracy and matching reliability of the first connector 100 and the second connector 300 when mating, and is conducive to improving the overall strength and durability of the optical fiber connector 1000, so that it can maintain good performance in various environments.

[0058] In some embodiments, Figure 1 , Figure 3 and Figure 4 As shown, the plug core 20 includes a sheath 26 and a pin 24, and the sheath 26 is sleeved outside the pin 24; one of the plurality of first limiting structures 16 is formed on the outer peripheral wall of the corresponding sheath 26, and one of the plurality of second limiting structures 17 is formed on the peripheral wall of the corresponding installation cavity 11. At this time, in the mating state, the pin 24 of the first connector 100 is docked with the pin 24 of the second connector 300, and one of the sheaths 25 extends into the other installation cavity 11, and the one of the sheaths 25 is radially limited with the peripheral wall of the other installation cavity 11.

[0059] Therefore, the radial cooperation between the sheath 26 and the corresponding installation cavity 11 can improve the alignment and concentricity of the pin 24 of the first connector 100 and the pin 24 of the second connector 300 in the mating state, thereby improving the mating stability and reliability.

[0060] For example, Figure 3 As shown, the first connector 100 includes a first housing 101 and a first plug core 201. The first housing 101 defines a first installation cavity 111. The first plug core 201 is inserted into the first installation cavity 111 and includes a first sheath 261 and a first plug pin 241. The first sheath 261 is sleeved outside the first plug pin 241 to protect the first plug pin 241. Figure 4 As shown, the second connector 300 includes a second shell 301 and a second ferrule 302 . The second shell 301 defines a second installation cavity 312 . The second ferrule 302 is inserted into the second installation cavity 312 and includes a second sheath 362 and a second pin 342 . The second sheath 362 is sleeved on the second pin 342 .

[0061] For example, the second joint 300 is formed with a plurality of first limiting structures 16, and the first joint 100 is formed with a plurality of second limiting structures 17. Figure 4 As shown, one of the first limiting structures 16 is formed on the outer peripheral wall corresponding to the second sheath 362, such as Figure 3 As shown, one of the second limiting structures 17 is formed on the peripheral wall of the first installation cavity 111. In the mating state, the first pin 241 is docked with the second pin 342, and the second sheath 362 extends into the first installation cavity 111 and is radially limited with the peripheral wall of the first installation cavity 111, so as to realize the limiting cooperation between the one of the first limiting structures 16 and the one of the second limiting structures 17.

[0062] Of course, if the second connector 300 is formed with a plurality of second limiting structures 17 and the first connector 100 is formed with a plurality of first limiting structures 16, one of the first limiting structures 16 is formed on the outer peripheral wall corresponding to the first sheath 261, and one of the second limiting structures 17 is formed on the peripheral wall of the second installation cavity 312. In the mating state, the first pin 241 is butted with the second pin 342, and the first sheath 261 extends into the second installation cavity 312 and is radially limited with the peripheral wall of the second installation cavity 312, so as to realize the limited cooperation of one of the first limiting structures 16 and one of the second limiting structures 17.

[0063] It can be seen that during the mating process, when the first connector 100 and the second connector 300 are docked, the second sheath 362 will enter the first installation cavity 111, or the first sheath 261 will enter the second installation cavity 312, providing a certain guiding effect for the docking of the pins 24, improving the accuracy of the two pins 24 during the docking process, and stabilizing the centering of the two pins 24 during use.

[0064] In some embodiments, Figure 2 As shown, the optical fiber connector 1000 also includes a buffer seal 29. The buffer seal 29 is sleeved outside one of the above-mentioned first limiting structures 16, and the buffer seal 29 is arranged outside the above-mentioned corresponding sheath 26. In the mating state, the buffer seal 29 is sealed between the peripheral wall of the corresponding installation cavity 11 and the corresponding sheath 26, so that the corresponding sheath 26 is radially limited with the peripheral wall of the corresponding installation cavity 11 through the buffer seal 29. Such a setting can not only improve the waterproof and dustproof performance of the optical fiber connector 1000, but also the buffer seal 29 can buffer and reduce the vibration transmission of the first connector 100 and the second connector 300, which is convenient for realizing the integrated setting of waterproof and vibration-proof optical fiber connector 1000, improving the stability of optical signal transmission, and at the same time helping to reduce the complexity of the structure and the complexity of the mold, and helping to make the mold have more acupuncture points. In addition, the buffer seal 29 can also avoid the rigid contact between the first connector 100 and the second connector 300, and improve the reliability of the optical fiber connector 1000.

[0065] For example, Figure 3-Figure 4 As shown, a first plug interface 121a is formed at one end of the first installation cavity 111, and a second plug interface 322a is formed at the corresponding end of the second installation cavity 312, and the buffer seal 20 is arranged on the outer peripheral wall of the second sheath 362; in the mating state, the second sheath 362 extends into the first installation cavity 111 through the first plug interface 121a, so that the first shell 101 is sleeved outside the second sheath 362 and is sealed with the second sheath 362 through the buffer seal 29, so that the pins 24 of the two connectors can realize optical fiber connection, then the inner peripheral wall of the first shell 101, the first sheath 261, the outer peripheral wall of the second sheath 362, the mating accessory 200 and the buffer seal 29 can define a cavity with a certain sealing property, and the two pins 24 are connected in the above-mentioned cavity, which is beneficial to improving the connection reliability of the optical fiber connector 1000.

[0066] Of course, in other examples, the buffer seal 20 is disposed on the outer peripheral wall of the first sheath 261. In the mating state, the first sheath 261 extends into the second installation cavity 312 through the second plug-in interface 322a, so that the second shell 301 is sleeved outside the first sheath 261 and is sealed with the first sheath 261 through the buffer seal 29.

[0067] In some embodiments, Figure 1 As shown, the buffer seal 29 is an annular sealing rubber ring, and the buffer seal 29 is sleeved outside the second sheath 362. Optionally, as Figure 4 As shown, a placement groove 28 is formed on the outer peripheral wall of the second sheath 362, and the placement groove 28 is used to place the buffer seal 29, so as to facilitate the reliable installation of the buffer seal 29; of course, in other examples, the placement groove 28 may not be set on the second sheath 362, and the buffer seal 29 is fixed to the second sheath 362 by at least one method such as interference fit, bonding, etc.

[0068] In some embodiments, Figure 2-Figure 3 As shown, the optical fiber connector 1000 further includes a mating part 200, the ferrule 20 includes a sheath 26 and a pin 24, the sheath 26 is sleeved outside the pin 24; one of the plurality of second limiting structures 17 is formed as a mating part 200 provided on the corresponding sheath 26 and sleeved outside the corresponding pin 24, and one of the plurality of first limiting structures 16 is formed on the outer peripheral wall of the corresponding pin 24. In the mating state, the pin 24 of the first connector 100 is docked with the pin 24 of the second connector 300, and the mating part 200 is sleeved outside the other pin 24 and radially limited with the other pin 24, so that the pin 24 of the first connector 100 and the pin 24 of the second connector 300 are radially limited through the mating part 200.

[0069] It can be seen that the accessory 200 can limit the radial movement of the pin 24 during the docking process, further realizing the radial alignment of the first pin and the second pin, which is beneficial to further improve the stability and reliability of the docking. At the same time, the accessory 200 provides additional support and protection for the connection to a certain extent, enhances the connection strength between the two pins 24, reduces the possibility of loosening or offset of the pin due to external force or environmental factors, and improves the stability and reliability of the optical fiber connector 1000 in the docking state.

[0070] For example, in the mating state, the first sheath 261 extends into the second mounting cavity 312, and the first sheath 261 is radially limited with the peripheral wall of the second mounting cavity 312, the accessory 200 is sleeved outside the first pin 241 and the second pin 342, and the first pin 241 and the second pin 342 are respectively radially limited with the matching accessory 200, wherein the matching accessory 200 can be fixedly arranged in the second sheath 362 and sleeved outside the second pin 342; or, in the mating state, the second sheath 362 extends into the first mounting cavity 111, and the second sheath 362 is radially limited with the peripheral wall of the first mounting cavity 111, the matching accessory 200 is sleeved outside the first pin 241 and the second pin 342, and the first pin 241 and the second pin 342 are respectively radially limited with the matching accessory 200, wherein the matching accessory 200 can be fixedly arranged in the first sheath 261 and sleeved outside the first pin 241.

[0071] The radial cooperation between the sheath 26 and the corresponding mounting cavity 11 can improve the concentricity of the alignment of the first pin and the second pin in the mating state, and improve the stability and reliability of the mating; and the accessory 200 limits the radial movement of the pin 24 during the docking process, further realizing the radial alignment of the first pin and the second pin, which is beneficial to further improve the stability and reliability of the mating. At the same time, the accessory 200 provides additional support and protection for the connection to a certain extent, enhances the connection strength between the two pins 24, reduces the possibility of loosening or deviation of the pins due to external forces or environmental factors, and improves the stability and reliability of the optical fiber connector 1000 in the mating state.

[0072] In some embodiments, Figure 5 As shown, the cross section of the accessory 200 forms an open ring structure.

[0073] The fitting 200 extends along the axial direction of the optical fiber connector 1000 to form a cylindrical shape with an opening on the side wall. The opening radially penetrates the inner and outer peripheral walls of the fitting 200. The opening setting gives the fitting 200 the ability to open and contract. In actual applications, the optical fiber connector 1000 may be affected by external forces such as vibration, impact, etc. during use. If the docking is completely rigid, then these external forces are likely to be directly transmitted to the pin 24, causing the pin 24 to deform or be damaged, thereby affecting the stability and performance of the optical fiber connection. However, by setting the opening of the fitting 200, it is possible to adaptively adjust its shape and size within a very small range. In this way, when subjected to external forces, the fitting 200 can absorb part of the force to a certain extent, and buffer this force by opening or contracting itself. The pin 24 of the first connector 100 and the pin 24 of the second connector 300 are not in rigid contact with the fitting 200, respectively, thereby protecting the pin 24 from deformation or damage.

[0074] In some embodiments, one of the plurality of second limiting structures 17 is formed on the outer peripheral wall of the corresponding housing 10, and one of the plurality of first limiting structures 16 is formed on the peripheral wall of the corresponding installation cavity 11. In the mating state, one of the housings 10 extends into the other installation cavity 11 and is radially limited with the peripheral wall of the installation cavity 11. Thus, the radial relative movement of the housing 10 of the first connector 100 and the housing 10 of the second connector 300 during the docking process is further limited, which is conducive to further improving the ability of the plug core 20 to maintain the correct position and direction during the docking process, avoiding misalignment or offset, and facilitating the alignment and concentricity of the pin 24 of the first connector 100 and the pin 24 of the second connector 300 again, so as to facilitate the three-level correction during the mating process of the first connector 100 and the second connector 300.

[0075] For example, in the mating state, the first sleeve 261 extends into the second mounting cavity 312, and the first sleeve 261 and the peripheral wall of the second mounting cavity 312 are radially limited and matched, at this time, the second shell 301 extends into the first mounting cavity 111, and the second shell 301 and the peripheral wall of the first mounting cavity 111 are radially limited and matched; or, in the mating state, the second sleeve 362 extends into the first mounting cavity 111, and the second sleeve 261 and the peripheral wall of the first mounting cavity 111 are radially limited and matched, at this time, the first shell 101 extends into the second mounting cavity 312, and the first shell 101 and the peripheral wall of the second mounting cavity 312 are radially limited and matched.

[0076] In some embodiments, Figure 1 As shown, the outer peripheral wall of one of the housings 10 is provided with an elastic buckle 70, and the peripheral wall of the other mounting cavity 11 is formed with a clamping hole 37. In the mating state, the elastic buckle 70 extends into the corresponding mounting cavity 11 and is clamped in the clamping hole 37. The snap-fit ​​is further prevented from falling off. It can be seen that the optical fiber connector 1000 of the present application is convenient for realizing a snap-fit ​​plug-in structure, which is conducive to saving volume, and the mating operation of the two connectors is simple, and the space occupied on the vehicle is small, which is convenient for layout and conducive to the development of lightweight vehicles.

[0077] For example, Figure 3-Figure 4 , Figure 7 , Fig. 9 As shown, in the mating state, the shell 10 of the first connector 100 extends into the installation cavity 11 of the second connector 300 , and an elastic buckle 70 is provided on the shell 10 of the first connector 100 , and a clamping hole 37 is provided on the peripheral wall of the installation cavity 11 of the second connector 300 .

[0078] In some embodiments, the ferrule 20 includes a sheath 26 and a pin 24, the sheath 26 is sleeved outside the pin 24, and at least one of the first connector 100 and the second connector 300 further includes a first elastic member 27. The first elastic member 27 is provided on the sheath 26, and the first elastic member 27 is used to apply an elastic force to the pin 24 to extend out of the sheath 26 toward the mating end of the housing 10 (the mating end of the housing 10 can be understood as the end where the plug interface of the housing 10 is located). Then, in the absence of external force, the pin 24 will tend to extend out of the sheath 26 due to the push of the first elastic member 27, and form a tight connection with another pin 24, ensuring that the connection between the pins 24 is always maintained in the best state, reducing the optical signal loss caused by loose or misaligned pins 24.

[0079] Secondly, when the optical fiber connector 1000 is subjected to external force vibration, the presence of the first elastic member 27 can continuously push the pin 24, so that a certain elastic squeezing force is maintained between the pin of the first connector 100 and the pin of the second connector 200, which is conducive to improving the stability of the optical fiber connector 1000 in the mating state. Since the first elastic member 27 has a certain elasticity, it can be deformed under the action of external force, absorb and buffer part of the vibration energy, thereby preventing the pin 24 from loosening or disconnecting due to vibration.

[0080] For example, the first joint 100 includes the first elastic member 27 , while the second joint 300 does not include the first elastic member 27 .

[0081] In some embodiments, Figure 2-Figure 4 As shown, at least one of the first connector 100 and the second connector 300 also includes a second elastic member 30 and a limiting member 40, a first positioning protrusion 13 is convexly provided on the peripheral wall of the installation cavity 11, and a second positioning protrusion 22 is convexly provided on the outer peripheral wall of the plug core 20, the second elastic member 30 is arranged between the shell 10 and the plug core 20, and the second elastic member 30 stops between the first positioning protrusion 13 and the second positioning protrusion 22, the second elastic member 30 applies an elastic force to the first positioning protrusion 13 and the second positioning protrusion 22 in the axial direction of the plug core 20 to move away from each other, a mounting port 12 connected to the installation cavity 11 is formed on the shell 10, the limiting member 40 is detachably plugged into the installation cavity 11 through the mounting port 12, and the limiting member 40 is respectively limited and matched with the plug core 20 and the shell 10 in the axial direction of the plug core 20.

[0082] It should be noted that at least one of the first connector 100 and the second connector 300 has the following structure inside, which is described below by taking the first connector 100 as an example.

[0083] like Figure 3 As shown, the first positioning protrusion 13 in the first connector 100 can be formed by a portion of the peripheral wall of the installation cavity 11 protruding inward, and the second positioning protrusion 22 can be formed by a portion of the outer peripheral wall of the ferrule 20 protruding outward, so as to facilitate the limited installation of the second elastic member 30, so that the second elastic member 30 stops between the first positioning protrusion 13 and the second positioning protrusion 22. Exemplarily, the second elastic member 30 is sleeved outside the ferrule 20; of course, there can be multiple second elastic members 30, and the multiple second elastic members 30 are arranged on the outer peripheral wall of the ferrule 20 and are arranged at intervals along the circumference of the ferrule 20.

[0084] The ferrule 20 is effectively positioned in the axial direction by the first positioning protrusion 13 and the second positioning protrusion 22, thereby ensuring that it will not be axially offset in the installation cavity 11, and can also maintain a stable position during subsequent use, reducing the problem of the ferrule 20 offset due to external vibration, thereby improving the connection stability of the optical fiber connector 1000, and reducing the optical signal transmission loss and error caused by the offset of the ferrule 20. At the same time, the first positioning protrusion 13 and the second positioning protrusion 22 also make the installation of the ferrule 20 more convenient. During the assembly process, the ferrule 20 can smoothly enter the installation cavity 11 and enter the assembly position, reducing the difficulty of assembly and saving the time cost required for assembly.

[0085] like Figure 6-Figure 10 As shown, a mounting opening 12 communicating with the mounting cavity 11 is formed on the housing 10. The optical fiber connector 1000 further includes a stopper 40, and the mounting opening 12 provides a channel for the installation of the stopper 40.

[0086] like Figure 8 As shown, the limit member 40 is detachably plugged into the installation cavity 11 through the installation opening 12, and the limit member 40 is respectively limited and matched with the ferrule 20 and the shell 10 in the axial direction of the ferrule 20, that is, the part of the limit member 40 extending into the installation cavity 11 is matched with the ferrule 20 in the axial upper limit position of the ferrule 20, and the limit member 40 is matched with the shell 10 in the axial upper limit position of the ferrule 20. In other words, once the limit member 40 is installed in place, the limit member 40 forms a limit fit with the ferrule 20 and the shell 10 in the axial direction of the ferrule 20, respectively, ensuring the stable position of the ferrule 20 in the installation cavity 11, preventing it from moving or shaking in the axial direction, which is beneficial to enhancing the stability and positioning accuracy of the ferrule 20 in the installation cavity 11.

[0087] It can be seen that the elastic force applied by the second elastic member 30 facilitates the stable transmission of optical signals when the optical fiber connector 1000 is mated, and the limiter 40 makes the matching relationship between the ferrule 20 and the housing 10 more closely connected. On the one hand, the limiter 40 interacts with the ferrule 20 to limit its axial movement; on the other hand, the limiter 40 closely matches with the corresponding part of the housing 10 to ensure its own stable position in the installation cavity 11. In this way, a stable supporting structure is formed between the limiter 40, the housing 10 and the ferrule 20, providing a strong guarantee for the stable operation of the optical fiber connector 1000.

[0088] Obviously, the second elastic member 30 cooperates with the limit member 40 to prevent the ferrule 20 from moving in the installation cavity 11, so that the ferrule 20 will not be axially offset in the installation cavity 11, and can maintain a stable position during subsequent use, reducing the problem of the ferrule 20 offset due to external vibration, thereby improving the connection stability of the optical fiber connector 1000, and reducing the optical signal transmission loss and error caused by the offset of the ferrule 20; at the same time, the first positioning protrusion 13 and the second positioning protrusion 22 also make the installation of the ferrule 20 more convenient. During the assembly process, the ferrule 20 can smoothly enter the installation cavity 11 and enter the assembly position, which reduces the difficulty of assembly and saves the time cost required for assembly.

[0089] In addition, since the limiting member 40 is detachably installed through the installation opening 12 , the limiting member 40 can be easily disassembled and assembled as needed, thereby providing great convenience for the disassembly, maintenance and upgrade of the optical fiber connector 1000 .

[0090] When the optical fiber connector 1000 is mated, the elastic force applied by the second elastic member 30 pushes the first positioning protrusion 13 and the second positioning protrusion 22 in the axial direction of the ferrule 20, so that they tend to move away from each other. This tendency is actually fine-tuning the relative position between the first positioning protrusion 13 and the second positioning protrusion 22, so that the distance between them increases slightly. This fine-tuning can prevent the ferrule 20 from moving in the installation cavity 11, so that the optical signal can be transmitted stably during mating, reduce the optical signal transmission loss caused by the shaking or deviation of the ferrule 20, and ensure the stable transmission of the optical signal in the optical fiber connector 1000.

[0091] In addition, since the second elastic member 30 has a certain buffering and shock absorbing effect, it can fine-tune the relative position between the ferrule 20 and the positioning protrusion when the optical fiber connector 1000 is subjected to external vibration or impact, so as to maintain its stable state. This arrangement enables the optical fiber connector 1000 to maintain its stability when subjected to external vibration or impact, ensuring that the optical signal can be transmitted without loss. At least part of the limiter 40 can be located in the installation cavity 11, which is conducive to reducing the occupation of the external space of the optical fiber connector 1000. When used in a vehicle, the space occupied by the limiter 40 is also small, which is conducive to the layout of other structures in the vehicle.

[0092] In some embodiments, Figure 2-Figure 4As shown, by setting at least one of the first connector 100 and the second connector 300 to include a second elastic member 30 and a stopper 40, the axial stopper of the ferrule 20 relative to the housing 10 can be achieved, so as to improve the problem of the ferrule 20 moving in the installation cavity 11, so that the ferrule 20 will not be axially offset in the installation cavity 11, and can also maintain a stable position during subsequent use, thereby reducing the problem of the ferrule 20 offset caused by external vibration, thereby improving the connection stability of the optical fiber connector 1000, and reducing the optical signal transmission loss and error caused by the offset of the ferrule 20; at the same time, the optical fiber connector 1000 is easy to disassemble and assemble, which provides great convenience for the maintenance and upgrade of the optical fiber connector 1000. Optionally, the second elastic member 30 is a spring member.

[0093] It can be seen that the above scheme of the present application is convenient for maintaining the stable setting of the ferrule 20, so that it is not easily affected by external vibrations, impacts and other factors, resulting in unstable or interrupted optical signal transmission. When the optical fiber connector 1000 is used in a vehicle, during driving, even if the road is uneven and causes the vehicle to vibrate, the optical fiber connector 1000 has good anti-vibration performance, which improves the docking reliability of the optical fiber connector 1000 and realizes stable transmission of optical signals.

[0094] It should be noted that, in the description of the present application, "axial" refers to the axial direction of the ferrule 20 (the extension direction of the central axis L of the ferrule 20), the axial direction of the optical fiber connector 1000, or the mating direction of the ferrule 20, "circumferential" refers to the circumference of the ferrule 20, the direction around the central axis L of the ferrule 20, and "radial" refers to the radial direction of the ferrule 20, the direction passing through the central axis L of the ferrule 20 in the radial plane, and "axial", "circumferential" and "radial" are perpendicular to each other.

[0095] In some embodiments, the limiting member 40 includes at least one limiting portion, the installation port 12 includes at least one opening 120, each limiting portion corresponds to one opening 120, a first limiting groove 21 is formed on the outer peripheral wall of the ferrule 20, and the limiting portion is limitedly matched with the opening 120 and the first limiting groove 21, then the limiting portion and the opening 120 are limitedly matched, and the limiting portion and the housing 10 can be limited in the axial direction, and the limiting portion and the first limiting groove 21 are limitedly matched, and the limiting portion and the ferrule 20 can be limited in the axial direction. Therefore, while the limiting member 40 and the ferrule 20 and the housing 10 are respectively reliably limited, it is convenient to simplify the insertion of the limiting member 40.

[0096] It can be understood that the limiting cooperation between the limiting portion and the first limiting groove 21 can refer to that the limiting portion extends into the first limiting groove 21 and the two side walls of the first limiting groove 21 in the axial direction respectively abut against the limiting portion, so that the core 20 is not easy to move in the axial direction relative to the limiting portion.

[0097] In some embodiments, Figure 3 , Figure 11-Figure 12 As shown, the first limiting groove 21 is formed on the side of the second positioning protrusion 22 away from the second elastic member 30, and the surface of the side of the second positioning protrusion 22 away from the second elastic member 30 defines a part of the groove wall of the first limiting groove 21; when the limiting portion is installed in the installation cavity 11, it abuts against the side of the second positioning protrusion 22 away from the second elastic member 30. The limiting portion can prevent the ferrule 20 from retreating, compressing the second elastic member 30, so that the ferrule 20 does not move in the installation cavity 11. Of course, the axial relative positions of the first limiting groove 21 and the second positioning protrusion 22 are not limited to this.

[0098] In some embodiments, Fig.12 As shown, the first limiting groove 21 is formed as an annular groove. This arrangement makes the assembly of the limiting part simpler and more efficient. During the assembly process, the operator only needs to align the limiting part with the first limiting groove 21 and then gently push it to achieve precise matching between the limiting part and the first limiting groove 21; this assembly method not only reduces the difficulty of operation, but also reduces the error rate during the assembly process.

[0099] There are multiple limiting parts and openings 120, and the multiple openings 120 are arranged at intervals along the circumference of the insert 20. The multiple limiting parts are respectively matched with different positions of the first limiting groove 21, and each limiting part is respectively inserted into a different position of the first limiting groove 21 through the corresponding opening 120.

[0100] This arrangement enables multiple limiting parts to be dispersedly arranged around the ferrule 20, so that the multiple limiting parts form multi-directional limiting for the ferrule 20, which is conducive to improving the problem of deflection of the ferrule 20 relative to the housing 10, not only enhancing the structural stability of the optical fiber connector 1000, but also improving its resistance to external forces. Especially in practical applications, when a vehicle is traveling on a bumpy road, the ferrule 20 may be subjected to impact forces from all directions. Since multiple limiting parts are limited at different positions, these impact forces can be evenly dispersed to each limiting part, thereby avoiding excessive pressure on a certain part. This dispersed limiting effect makes it difficult for the ferrule 20 to deflect even when subjected to external forces, ensuring the stability and reliability of the optical fiber connection.

[0101] In addition, multiple limiting parts and multiple openings 120 also improve the fault tolerance of the optical fiber connector 1000. Even if a limiting part or an opening 120 fails for some reason, the other limiting parts can still continue to function to maintain the overall stability of the optical fiber connector 1000, thereby reducing the risk of overall performance degradation of the optical fiber connector 1000 due to failure of a single component.

[0102] In some embodiments, Figure 8As shown, multiple openings 120 are located on the same side of the housing 10, and multiple stoppers are suitable for being plugged into the installation cavity 11 from the same side of the housing 10 in the same direction. In actual operation, the operator only needs to align each stopper with the corresponding opening 120 located on the same side of the housing 10, and then insert the stopper 40 into the installation cavity 11 in the same direction at one time; since all the openings 120 and the stoppers are located on the same side and have the same plugging direction, the operator does not need to frequently adjust the position and direction, thereby greatly reducing the trouble and error rate of assembly, so that the optical fiber connector 1000 can still maintain its original anti-movement ability.

[0103] Of course, in other embodiments of the present application, the mating directions of at least two of the multiple limiting portions are different.

[0104] In some embodiments, Figure 8 As shown, the plurality of limiting parts include a first limiting part 41 and a second limiting part 42, and the first limiting part 41 and the second limiting part 42 are respectively arranged on both sides of the ferrule 20 in the first direction, and the first direction is perpendicular to the axial direction of the ferrule 20. For example, the first limiting part 41 and the second limiting part 42 are located on both sides of the ferrule 20 in the radial direction. By providing the first limiting part 41 and the second limiting part 42 and ensuring that they are located on opposite sides of the ferrule 20, the first limiting part 41 and the second limiting part 42 are respectively matched with the corresponding opposite sides of the first limiting groove 21, and at the same time, the mating directions of the first limiting part 41 and the second limiting part 42 are the same, so as to take into account the convenience of disassembly and assembly of the first limiting part 41 and the second limiting part 42, and the axial limiting stability of the ferrule 20 by the first limiting part 41 and the second limiting part 42.

[0105] In some embodiments, Fig.10 As shown, the ferrule 20 is clamped between the first limiting portion 41 and the second limiting portion 42, and the first limiting portion 41 and the second limiting portion 42 can also limit the movement of the ferrule 20 in the first direction, which helps to prevent the ferrule 20 from moving in the first direction, so as to further improve the installation stability of the ferrule 20, improve the problem of the ferrule 20 moving in the first direction, and help improve the centering of the ferrule 20. It can be seen that the first limiting portion 41 and the second limiting portion 42 not only provide support, but more importantly, by clamping the ferrule 20, ensure that it maintains a stable position during operation.

[0106] In some embodiments, Figure 8-Figure 10As shown, the first limiting portion 41 and the second limiting portion 42 have second limiting grooves 410 formed on their side surfaces facing each other, and the first limiting portion 41 has a second limiting groove 410 formed on its side surface facing the plug core 20, and the second limiting portion 42 has a second limiting groove 410 formed on its side surface facing the plug core 20; the plug core 20 is matched with the second limiting groove 410, so that the first limiting portion 41 and the second limiting portion 42 are respectively matched with the plug core 20 in the second direction, and the second direction is perpendicular to the first direction and the axial direction of the plug core 20.

[0107] The cooperation between the second limiting groove 410 and the ferrule 20 provides further limitation for the ferrule 20 in the second direction, further enhances the installation stability of the ferrule 20 , and further improves the movement and deviation of the ferrule 20 .

[0108] Exemplarily, the groove wall of the second limiting groove 410 abuts against the groove wall of the first limiting groove 21 to achieve additional restriction of the ferrule 20 in the second direction, so that the ferrule 20 can obtain uniform and effective support in multiple radial directions.

[0109] In some optional embodiments, such as Fig.10 As shown, the outer peripheral wall of the insert 20 corresponding to the first limiting groove 21 is a cylindrical surface 23, and the cylindrical surface 23 can form the bottom wall of the first limiting groove 21; Figure 8 , Figure 10-12 As shown, the groove wall of the second limiting groove 410 is an arc surface, and the arc surface is matched with the cylindrical surface 23.

[0110] First, the outer peripheral wall of the ferrule 20 corresponding to the first limiting groove 21 is set as a cylindrical surface 23, so that the ferrule 20 has a smooth and uniform appearance at the corresponding position, which helps to achieve adaptive and precise matching between the ferrule 20 and the corresponding arc surface of the second limiting groove 410; the arc surface can better adapt to the cylindrical surface 23 of the ferrule 20, so that the ferrule 20 and the second limiting groove 410 form a tight fit, thereby effectively preventing the ferrule 20 from moving in the radial direction. Secondly, since there is a relatively uniform contact surface between the ferrule 20 and the limiting portion, the risk of damage caused by stress concentration can also be reduced.

[0111] In addition, the cooperation between the cylindrical surface 23 and the arc surface also has a certain fault tolerance. Even if some slight deviations or changes are encountered in actual applications, this cooperation method can adapt and adjust through its own elastic deformation, thereby maintaining a stable limiting effect. At the same time, it is easy to plug in during installation without spending too much effort.

[0112] In some embodiments, Figure 9-10As shown, the stopper 40 further includes a mounting portion 43, and the mounting portion 43 is connected to at least one corresponding stopper, so at least one of all the stoppers of the stopper 40 is connected to the mounting portion 43. The operator can quickly and accurately install the corresponding stopper to the specified position through the mounting portion 43 without using additional tools for installation, making the assembly and disassembly of the optical fiber connector 1000 more convenient.

[0113] At least one of the connection method and connection structure between the mounting portion 43 and the housing 10 is improved.

[0114] A snap connection is used for the connection between the mounting portion 43 and the housing 10. The snap connection has certain stability and reliability. It can ensure that the mounting portion 43 and the housing 10 fit tightly and are not easy to loosen or fall off, thereby ensuring the long-term stable operation of the optical fiber connector 1000, and the snap connection can simplify the installation steps. Optionally, at least one of the mounting portion 43 and the housing 10 has a snap head, and the other has a snap seat that cooperates with the snap head, and the snap seat can be formed with a snap hole or a hook that cooperates with the snap head.

[0115] The following improvements are made to the connection structure between the mounting portion 43 and the housing 10 : a third limiting groove 14 is formed on the outer peripheral wall of the housing 10 , and the mounting portion 43 is limitedly matched in the third limiting groove 14 .

[0116] At least part of the mounting portion 43 is firmly connected to the third limiting groove 14, so that the mounting portion 43 is firmly defined on the housing 10. In addition, the third limiting groove 14 is located outside the housing 10, which facilitates the installation operation and does not limit the installation space.

[0117] Exemplarily, the limiting member 40 includes a first limiting portion 41 and a second limiting portion 42, which are arranged to be inserted into the mounting cavity 11 along the same direction from the same side of the shell 10, and the first limiting portion 41 and the second limiting portion 42 are respectively arranged on both sides of the insert 20 in the first direction, and the first limiting portion 41 and the second limiting portion 42 are both connected to the mounting portion 43.

[0118] In some embodiments, the mounting portion 43 satisfies the snap-fit ​​connection and the connection structure between the mounting portion 43 and the housing 10 in the above embodiments; Figure 8-Figure 10As shown, the mounting portion 43 includes a first portion 431 and two second portions 432 arranged at opposite ends of the first portion 431. In the mating direction of the corresponding limiting portion, the two second portions 432 are respectively extended obliquely in directions away from each other, and the projection of the mounting portion 43 along the axial direction of the ferrule 20 roughly presents a "C"-shaped profile. This "C" shape enables the mounting portion 43 to form a certain wrapping of the shell 10, thereby enhancing the tightness of the connection between the mounting portion 43 and the shell 10; at the same time, this wrapping fit can reduce the risk of displacement or falling off of the mounting portion 43 during use, avoid displacement of the limiting portion in the mounting cavity 11, and improve the external force resistance of the overall structure of the optical fiber connector 1000. In addition, this wrapping fit is conducive to improving the sealing of the matching between the limiting member 40 and the shell 10, which is convenient for improving the waterproof and dustproof effects of the optical fiber connector 1000.

[0119] For example, the third limiting groove 14 can span three adjacent side walls of the shell 10, the two second parts 432 are respectively matched with the two ends of the third limiting groove 14, and the first part 431 is matched with the middle part of the third limiting groove 14, so that the mounting portion 43 is clamped in the third limiting groove 14, and each second part 432 is respectively snap-connected with the shell 10.

[0120] This arrangement not only makes the connection between the mounting portion 43 and the housing 10 more firm and reliable, but also improves the radial stability of the limiter 40 and reduces the risk of unstable connection between the insert 20 and the housing 10 caused by external forces.

[0121] In some embodiments, Figure 8 , Fig.10 As shown, the limit member 40 and the core 20 are respectively limited in the first direction and the second direction, and the limit member 40 and the shell 10 are respectively limited in the first direction and the second direction; wherein the first direction and the second direction are perpendicular, and the first direction and the second direction are parallel to the cross-section of the core 20, and the cross-section of the core 20 is perpendicular to the axial direction of the core 20.

[0122] It can be seen that in the above scheme, in the first direction, the limiter 40 forms a tight fit with the ferrule 20, which not only limits the movement of the ferrule 20 in the first direction, but also prevents the ferrule 20 from deflecting or shaking when subjected to external forces through precise size and shape matching; this stability is essential to maintaining the performance of the optical fiber connector 1000, especially in application scenarios that require high-precision alignment and stable transmission. At the same time, in the second direction, the limiter 40 cooperates with the corresponding part of the ferrule 20 to effectively limit the movement of the ferrule 20 in the second direction. This two-way limit fit allows the ferrule 20 to be supported and fixed in all directions inside the optical fiber connector 1000.

[0123] Thus, the housing 10 and the ferrule 20 indirectly realize the limiting cooperation between the housing 10 and the ferrule 20 in the first direction, the second direction and the axial direction through the limiting member 40. This multi-directional limiting cooperation makes the position of the ferrule 20 inside the optical fiber connector 1000 more stable, and makes the alignment concentricity of the ferrule 20 high, and the position is not easy to deviate. This arrangement allows the ferrule 20 and the housing 10 to be a stable whole, improves the overall shockproof effect, and is conducive to the stable transmission of optical signals.

[0124] In some other embodiments, there are multiple limit members 40 and the multiple limit members 40 are arranged at intervals along the axial direction of the core 20. The multiple limit members 40 include a first limit member and a second limit member. The first limit member is respectively limited and matched with the shell 10 and the core 20 in the first direction, and the second limit member is respectively limited and matched with the shell 10 and the core 20 in the second direction; wherein the first direction and the second direction are perpendicular, and the first direction and the second direction are both parallel to the cross-section of the core 20, and the cross-section of the core 20 is perpendicular to the axial direction of the core 20.

[0125] It can be seen that in the above scheme, the housing 10 and the ferrule 20 can also be limited in the first direction, the second direction and the axial direction through a plurality of limit members 40. The ferrule 20 is firmly supported by the limit members 40 in both the first direction and the second direction. This multi-directional limit cooperation makes the position of the ferrule 20 inside the optical fiber connector 1000 more stable, and makes the alignment concentricity of the ferrule 20 high, and the position is not easy to deviate. As a result, the ferrule 20 and the housing 10 can better serve as a stable whole, improve the overall shockproof effect, and facilitate the stable transmission of optical signals.

[0126] In some embodiments, Figure 3-Figure 4As shown, one end of the ferrule 20 is formed as a mating end 240, the mating end 240 is arranged in the installation cavity 11, and the mating end 240 is spaced between the two ends of the shell 10 in the axial direction of the ferrule 20, then the two ends of the shell 10 in the axial direction of the ferrule 20 are respectively a first end and a second end, the mating end 240 and the first end are spaced apart in the axial direction of the ferrule 20, and the mating end 240 and the second end are spaced apart in the axial direction of the ferrule 20, that is, the mating end 240 does not extend out of the shell 10. It can be seen that in the above scheme, the mating end 240 is arranged in the installation cavity 11 so that it is inside the shell 10. This can improve the mating end 240 to a certain extent from being completely exposed to the external environment after installation and being susceptible to moisture. Through this internal layout, the mating end 240 will not be directly and completely exposed to the air, and will not easily cause moisture to cause connection failure, which is beneficial to improving the reliability of the optical fiber connector 1000. Moreover, after mating, the mating end 240 can also improve the entry of moisture, dust and other impurities in the external environment into the mating end 240 to a certain extent, thereby improving the waterproof and dustproof effect of the optical fiber connector 1000.

[0127] Obviously, a mating end 240 will grow out of the end of the shell 10 corresponding to the mating end 240, so that the mating end 240 is completely located in the shell 10 in the axial direction, so as to avoid potential damage such as impact and scratches that the mating end 240 may suffer from the outside; the shell 10 not only provides a solid physical barrier for the mating end 240, but also enhances the protection capability of the mating end 240.

[0128] When the optical fiber connector 1000 is used in a vehicle, due to the limitation of the internal space of the vehicle and the complexity of the structure, the optical fiber connector 1000 may easily interfere with or collide with other structures of the vehicle body. With the above-mentioned arrangement of the present application, due to the protection of the housing 10, the ferrule 20 is not easily subjected to direct impact, which is convenient for ensuring that the ferrule 20 can maintain its integrity and stability even in the event of a collision, thereby ensuring the reliability and stability of the optical fiber connection; in addition, in the event that the optical fiber connector 1000 accidentally falls, the ferrule 20 will not be damaged due to the all-round protection of the ferrule 20 by the housing 10. It can be seen that the housing 10 not only effectively prevents the ferrule 20 from direct contact with the outside world, but also provides additional buffering and support for the ferrule 20, which is convenient for ensuring that the optical fiber connector 1000 can maintain its integrity when it falls, avoiding damage to the ferrule 20 and failure of the optical fiber connection.

[0129] In some embodiments, Figure 3-Figure 4 , Fig.11As shown, the ferrule 20 includes a pin 24, a cable 25 and a sheath 26. One end of the pin 24 is connected to the cable 25 to ensure that the optical signal can be transmitted. The other end of the pin 24 extends out of the sheath 26, and the other end of the pin 24 extending out of the sheath 26 forms a mating end 240, that is, the end of the pin 24 away from the cable 25 forms a mating end 240, which facilitates the optical fiber connection. The cable 25 is used to transmit the optical signal.

[0130] The sheath 26 is sleeved outside the pin 24 and the cable 25, so that the sheath 26 is sleeved outside the connection position of the pin 24 and the cable 25, so as to protect the pin 24, the cable 25 and the connection position between the two and prevent them from being damaged by the external environment.

[0131] In some embodiments, Figure 2-Figure 4 As shown, the optical fiber connector 1000 also includes a crimping tube 50, which is sleeved on the end of the sheath 26 away from the mating end 240 and the cable 25 to achieve crimping of the cable 25, which is convenient for achieving reliable fixation of the end of the sheath 26 away from the mating end 240 and the cable 25, which is beneficial to ensuring that the cable 25 has a certain holding force and is beneficial to improving the transmission stability of the optical fiber signal.

[0132] The optical fiber connector 1000 also includes a heat shrinkable tube 60, which is sleeved on the outside of the crimping tube 50, and one end of the heat shrinkable tube 60 is sealed with the sheath 26, and the other end of the heat shrinkable tube 60 is sealed with the cable 25, and the crimping tube 50 is embedded in the heat shrinkable tube 60. It can be seen that the heat shrinkable tube 60 can further enhance the sealing of the crimping part corresponding to the crimping tube 50; after the crimping of the crimping tube 50 is completed, the heat shrinkable tube 60 is sleeved on the crimping part, and shrinks by heating to tightly wrap the crimping part. The shrinking process of the heat shrinkable tube 60 not only improves the sealing performance of the crimping part, preventing impurities such as moisture and dust from entering, but also enhances the mechanical strength of the crimping part to a certain extent, further improving the durability of the optical fiber connector 1000.

[0133] In some embodiments, Figure 3-Figure 4As shown, a third positioning protrusion 15 is convexly provided on the peripheral wall of the installation cavity 11, and the third positioning protrusion 15 and the first positioning protrusion 13 are arranged at intervals along the axial direction, and in the axial direction, the installation port 12 is located between the first positioning protrusion 13 and the third positioning protrusion 15, and a stopper structure suitable for abutting against the third positioning protrusion 15 is formed on the ferrule 20, and the stopper structure is suitable for abutting against the side of the third positioning protrusion 15 away from the first positioning protrusion 13, so that during the process of assembling the optical fiber connector 1000, the operator can be informed of the relative position of the first limiting groove 21 and the installation port 12 in the axial direction through the cooperation of the third positioning protrusion 15 and the stopper structure. Optionally, the optical fiber connector 1000 is configured such that: when the stopper structure abuts against the side of the third positioning protrusion 15 away from the first positioning protrusion 13, the installation port 12 is arranged opposite to the first limiting groove 21, and at this time, the limiting member 40 is inserted into the installation port 12 to achieve the cooperation between the limiting member 40 and the first limiting groove 21.

[0134] According to the optical communication network system of the second embodiment of the utility model, the optical communication network system comprises a first optical cable, a second optical cable and an optical fiber connector 1000 according to the first embodiment of the utility model, and the optical fiber connector 1000 is used to connect the first optical cable and the second optical cable. According to the vehicle of the third embodiment of the utility model, the optical communication network system comprises the optical fiber connector 1000 according to the first embodiment of the application or the optical communication network system according to the second embodiment of the application.

[0135] According to the vehicle of the embodiment of the utility model, by adopting the above-mentioned optical fiber connector 1000 or optical communication network system, it is convenient to realize the stable transmission of optical signals and improve the reliability of the vehicle.

[0136] At the same time, by adopting the above-mentioned optical fiber connector 1000 to replace the traditional Ethernet dedicated line layout, the internal line layout of the vehicle is simplified.

[0137] For example, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0138] Other components of the vehicle according to the embodiment of the utility model, such as the vehicle, are known to ordinary technicians in the field and will not be described in detail here.

[0139] Below, refer to the attached Figure 1-Figure 12 , describing a fiber optic connector 1000 according to a specific embodiment of the present application.

[0140] Reference Figure 1-Figure 2 The optical fiber connector 1000 includes a first connector 100 , a second connector 300 , a mating component 200 and a buffer seal 29 .

[0141] Reference Figure 2-Figure 3 The first connector 100 includes a first housing 101, a first ferrule 201, a first elastic member 27, a stopper 40, a crimping tube 50 and a heat shrink tube 60. A first installation cavity 111 is defined in the first housing 101, the first ferrule 201 is inserted into the first installation cavity 111, the first ferrule 201 includes a first sheath 261 and a first pin 241, and the first sheath 261 is sleeved outside the first pin 241.

[0142] Reference Figure 3-Figure 4 The second connector 300 includes a second shell 301, a second core 302, a second elastic member 30, a stop member 40, a crimping tube 50 and a heat shrink tube 60. The second shell 301 defines a second installation cavity 312. The second core 302 is inserted into the second installation cavity 312. The second core 302 includes a second sheath 362 and a second pin 342. The second sheath 362 is sleeved on the second pin 342.

[0143] Reference Figure 5 The cross section of the accessory 200 forms an open ring structure, and the accessory 200 is disposed on the first sheath 261 of the first connector 100 and is sleeved outside the corresponding first pin 241. Figure 4 The buffer seal 29 is disposed on the outer peripheral wall of the second sheath 362 in the second joint 300. Figure 6-Figure 7 The outer peripheral wall of the first housing 101 includes an elastic buckle 70, and a clamping hole 37 is formed on the peripheral wall of the second installation cavity 312 of the second housing 301. Figure 3 The first elastic member 27 is disposed on the first sheath 261 and is used to exert an elastic force on the first insertion pin 241 to extend out of the first sheath 261. Figure 4 The second joint 300 also includes a second elastic member 30 .

[0144] Reference Figure 2 , the matching structure between the first connector 100 and the first ferrule 201 is described below.

[0145] The first shell 101 is provided with an installation opening 121 which is connected with the first installation cavity 111. A first positioning protrusion 13 is convexly provided on the peripheral wall of the first installation cavity 111. The ferrule 20 is inserted into the installation cavity 11 from the other open end of the installation cavity 11. A second positioning protrusion 22 is convexly provided on the peripheral wall of the ferrule 20. The second elastic member 30 is sleeved outside the ferrule 20 and stops between the first positioning protrusion 13 and the second positioning protrusion 22. The second elastic member 30 applies an elastic force to the first positioning protrusion 13 and the second positioning protrusion 22 to move them away from each other in the axial direction of the ferrule 20.

[0146] Reference Figure 6-Figure 10A mounting opening 12 connected to the mounting cavity 11 is formed on the peripheral wall of the shell 10, and the mounting opening 12 includes two openings 120 arranged on the same side of the shell 10. A first limiting groove 21 is formed on the outer peripheral wall of the ferrule 20, and the first limiting groove 21 is formed as an annular groove; the limiting member 40 can be configured as a CPA (Connector position asurance) structure and includes a first limiting portion 41, a second limiting portion 42 and a mounting portion 43. The first limiting portion 41 and the second limiting portion 42 are respectively arranged on both sides of the ferrule 20 in the first direction, and the ferrule 20 is clamped between the first limiting portion 41 and the second limiting portion 42. The first limiting portion 41 and the second limiting portion 42 are respectively formed with second limiting grooves 410 on the side surfaces facing each other.

[0147] The first limiting portion 41 is inserted into one of the openings 120 along a direction parallel to the second direction and extends into the installation cavity 11, so as to be limitedly matched with the first limiting groove 21, and the ferrule 20 is limitedly matched with the second limiting groove 410 on the first limiting portion 41, so that the first limiting portion 41 and the ferrule 20 are limitedly matched in the axial direction, the first direction and the second direction respectively; similarly, the second limiting portion 42 is inserted into the other opening 120 along a direction parallel to the second direction and extends into the installation cavity 11, so as to be limitedly matched with the first limiting groove 21, and the ferrule 20 is limitedly matched with the second limiting groove 410 on the second limiting portion 42, so that the first limiting portion 41 and the ferrule 20 are limitedly matched in the axial direction, the first direction and the second direction respectively. The second direction is perpendicular to the first direction and the axial direction of the ferrule 20.

[0148] Reference Figure 9-10 The mounting portion 43 is connected to the same end of the first limiting portion 41 and the second limiting portion 42 in the mating direction, the mounting portion 43 is limitedly matched with the third limiting groove 14 on the outer peripheral wall of the shell 10, and the mounting portion 43 is snap-connected with the shell 10.

[0149] Reference Figure 11-Figure 12 The core 20 includes a pin 24, a cable 25, a sheath 26 and a buffer seal 29. The sheath 26 is sleeved on the outside of the pin 24 and the cable 25. One end of the pin 24 is connected to the cable 25, and the other end of the pin 24 extends out of the sheath 26 and forms a mating end 240. The mating end 240 is arranged at the plug interface 12a, and the mating end 240 is arranged in the shell 10. The outer peripheral wall of one end of the sheath 26 corresponding to the mating end 240 is provided with a buffer seal 29, and the buffer seal 29 is spaced apart from the peripheral wall of the installation cavity 11; the second positioning protrusion 22 is convexly provided on the outer peripheral wall of the sheath 26, and the first limiting groove 21 is formed on the outer peripheral wall of the sheath 26.

[0150] The optical fiber connector 1000 further includes a crimping tube 50 and a heat shrink tube 60. The crimping tube 50 is sleeved on one end of the sheath 26 away from the mating end 240 and outside the cable 25. The heat shrink tube 60 is sleeved outside the crimping tube 50, and one end of the heat shrink tube 60 is sealed with the sheath 26, and the other end of the heat shrink tube 60 is sealed with the cable 25. The heat shrink tube 60 can be a heat shrink tube with adhesive.

[0151] The matching structure of the second connector 300 and the second ferrule 302 is the same as the matching structure of the first connector 100 and the first ferrule 201 , and will not be described in detail below.

[0152] It can be seen that the optical fiber connector 1000 of the present application can realize an integrated setting of waterproof, dustproof and vibration-proof, which is conducive to reducing structural complexity, reducing mold complexity, and allowing the mold to have more acupoints. It is also convenient for production control and improves production efficiency. Even if the optical fiber cable core is small, it is easy to achieve good optical fiber cable core alignment and concentricity, and can be used in vibration scenarios with complex road conditions during vehicle driving.

[0153] According to the following Figure 2-Figure 4 , Figure 8 , describing the assembly process of the optical fiber connector 1000 in some embodiments of the present application.

[0154] Step 1: Preliminary assembly of the pin 24 and the cable 25: Sleeve the sheath 26 on the connection between the pin 24 and the cable 25, and then crimp the crimping tube 50 on the connection between the sheath 26 and the cable 25 to ensure stability. Next, sleeve the heat shrink tube 60 on the outside of the crimping tube 50 and perform heat shrink sealing.

[0155] Step 2: Pre-assemble the ferrule 20: Assemble the processed ferrule 24 and the cable 25 and install them into the installation cavity 11 of the housing 10. At this point, the pre-assembly of the ferrule 20 is completed.

[0156] Step three: sleeve the second elastic member 30 onto one end of the insert 20 .

[0157] Step 4, pre-assemble the insert 20 and the housing 10: axially install the pre-assembled insert 20 and the second elastic member 30 into the housing 10. For the second joint 300, in this process, the buffer seal 29 will first pass through the first positioning protrusion 13, and then continue to extend axially into the installation cavity 11. When the second positioning protrusion 22 contacts the second elastic member 30, it will exert a certain amount of pressure on it until the first limiting groove 21 and the installation opening 12 are at the same axial depth, ensuring that the position of the insert 20 in the housing 10 is accurate. For the first joint 100, the insert 20 first passes through the first positioning protrusion 13, and then continues to extend axially into the installation cavity 11. When the second positioning protrusion 22 contacts the second elastic member 30, it will exert a certain amount of pressure on it until the first limiting groove 21 and the installation opening 12 are at the same axial depth.

[0158] Step 5, fixing the insert 20 : insert the first limiting portion 41 and the second limiting portion 42 of the limiting member 40 from the opening 120 of the housing 10 until the mounting portion 43 of the limiting member 40 is engaged with the housing 10 .

[0159] Step six, match the first connector 100 and the second connector 300. Extend the first sleeve 261 of the first connector 100 into the second installation cavity 312 and radially limit the peripheral wall of the second installation cavity 312. The second shell 301 of the second connector 300 extends into the first installation cavity 111 in the first connector 100 and radially limits the peripheral wall of the first installation cavity 111. The first pin 241 of the first connector 100 is docked with the second pin 342 of the second connector 300, and the accessory 200 is sleeved on the pins of the first connector 100 and the pins of the second connector 300, so that the first pin 241 and the second pin 342 are radially limited. The buffer seal 29 is sealed between the peripheral wall of the first installation cavity 111 and the second sleeve 362, so that the corresponding second sleeve 362 is radially limited with the peripheral wall of the first installation cavity 111 through the buffer seal 29. At the same time, the elastic buckle 70 of the first connector 100 extends into the second installation cavity 312 and is locked in the locking hole 37 of the second connector 300 .

[0160] Through the above steps, the assembly of the optical fiber connector 1000 is completed, and the multi-level limit between the first connector 100 and the second connector 300 ensures that the optical fiber connector 1000 has a stable structure and reliable performance.

[0161] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0162] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An optical fiber connector, characterized in that: include: A first connector and a second connector, wherein the first connector and the second connector respectively include a shell and a plug, wherein an installation cavity is defined in the shell, and the plug is inserted into the installation cavity, wherein one of the first connector and the second connector is formed with a plurality of first limiting structures, and the other is formed with a plurality of second limiting structures; The optical fiber connector has a mating state, in which the ferrule of the first connector is mated with the ferrule of the second connector, and each of the first limiting structures is radially limited and matched with the corresponding second limiting structure.

2. The optical fiber connector according to claim 1, characterized in that: There are three or more first limiting structures and two or more second limiting structures respectively, and a plurality of the first limiting structures are arranged at intervals in the radial direction, and a plurality of the second limiting structures are arranged at intervals in the radial direction.

3. The optical fiber connector according to claim 1, characterized in that: The plug core includes a sheath and a plug pin, the sheath is sleeved outside the plug pin, one of the first limiting structures is formed on the outer peripheral wall corresponding to the sheath, and one of the second limiting structures is formed on the peripheral wall corresponding to the installation cavity. In the mating state, the pin of the first connector is connected to the pin of the second connector, and one of the sheaths extends into the other installation cavity and is radially limitedly matched with the peripheral wall of the installation cavity.

4. The optical fiber connector according to claim 3, characterized in that: Also includes: A buffer seal is sleeved outside one of the first limiting structures. In the mating state, the buffer seal is sealed between the peripheral wall of the corresponding installation cavity and the corresponding sheath.

5. The optical fiber connector according to claim 1, characterized in that: The plug core includes a sheath and a plug pin, the sheath is sleeved outside the plug pin, one of the second limiting structures is formed as a matching part provided at the corresponding sheath and sleeved outside the corresponding plug pin, one of the first limiting structures is formed at the outer peripheral wall corresponding to the plug pin, In the mating state, the pin of the first connector is connected to the pin of the second connector, and the mating fitting is sleeved outside the other pin and radially limited with the other pin, so that the pin of the first connector and the pin of the second connector are radially limited by the mating fitting.

6. The optical fiber connector according to claim 5, characterized in that: The cross section of the counter fitting is formed into an open ring structure.

7. The optical fiber connector according to claim 1, characterized in that: One of the second limiting structures is formed on the outer peripheral wall of the corresponding shell, and one of the first limiting structures is formed on the peripheral wall of the corresponding installation cavity. In the mating state, one of the shells extends into the other installation cavity and cooperates with the peripheral wall of the installation cavity in radial limiting manner.

8. The optical fiber connector according to claim 7, characterized in that: An elastic buckle is provided on the outer peripheral wall of one of the shells, and a clamping hole is formed on the peripheral wall of the other installation cavity. In the mating state, the elastic buckle extends into the corresponding installation cavity and is clamped in the clamping hole.

9. The optical fiber connector according to claim 1, characterized in that: The ferrule comprises a sheath and a pin, wherein the sheath is sleeved outside the pin, and at least one of the first connector and the second connector further comprises: A first elastic member is disposed on the sleeve and is used to apply an elastic force to the pin to extend out of the sleeve toward the mating end of the housing.

10. The optical fiber connector according to any one of claims 1 to 9, characterized in that: At least one of the first connector and the second connector further comprises: A second elastic member, a first positioning protrusion is convexly provided on the peripheral wall of the installation cavity, a second positioning protrusion is convexly provided on the peripheral wall of the plug core, the second elastic member is arranged between the housing and the plug core and stops between the first positioning protrusion and the second positioning protrusion, and the second elastic member applies an elastic force to the first positioning protrusion and the second positioning protrusion to move away from each other in the axial direction of the plug core; A limiting member, wherein a mounting opening communicating with the mounting cavity is formed on the shell, the limiting member is detachably plugged into the mounting cavity through the mounting opening, and the limiting member and the ferrule and the shell are respectively limitedly matched in the axial direction of the ferrule.

11. The optical fiber connector according to claim 10, characterized in that: The limiting member includes at least one limiting portion, the installation port includes at least one opening, a first limiting groove is formed on the outer peripheral wall of the insert, and the limiting portion is limitedly matched with the opening and the first limiting groove.

12. The optical fiber connector according to claim 11, characterized in that: The first limiting groove is formed as an annular groove, the limiting portions and the openings are multiple, the multiple openings are arranged at intervals along the circumference of the insert, and the multiple limiting portions are respectively matched with different positions of the first limiting groove.

13. The optical fiber connector according to claim 12, characterized in that: The plurality of openings are located on the same side of the shell, and the plurality of limiting portions are suitable for being plugged into the installation cavity along the same direction from the same side of the shell.

14. The optical fiber connector according to claim 13, characterized in that: The plurality of limiting portions include a first limiting portion and a second limiting portion, wherein the first limiting portion and the second limiting portion are respectively arranged on both sides of the ferrule in a first direction, and the first direction is perpendicular to the axial direction of the ferrule.

15. The optical fiber connector according to claim 14, characterized in that: The ferrule is clamped between the first limiting portion and the second limiting portion.

16. The optical fiber connector according to claim 15, characterized in that: The first limiting portion and the second limiting portion have second limiting grooves formed on their surfaces facing each other, and the insert is fitted in the second limiting groove so that the first limiting portion and the second limiting portion are respectively fitted with the insert in a second direction, and the second direction is perpendicular to the first direction and the axial direction of the insert.

17. The optical fiber connector according to claim 11, characterized in that: The position-limiting member further comprises a mounting portion, wherein the mounting portion is connected to at least one corresponding position-limiting portion. The mounting portion satisfies at least one of the following conditions: Condition A1: the mounting portion is snap-connected to the housing; Condition A2: A third limiting groove is formed on the outer peripheral wall of the shell, and the mounting portion is limitedly matched in the third limiting groove.

18. The optical fiber connector according to claim 17, characterized in that: The mounting portion satisfies conditions A1 and A2, and includes a first portion and two second portions disposed at opposite ends of the first portion. In the mating direction corresponding to the limiting portion, the two second portions extend obliquely in directions away from each other, and the first portion and the second portion are both engaged with the third limiting groove so that the mounting portion is clamped in the third limiting groove, and each of the second portions is respectively connected to the shell by a snap-on connection.

19. The optical fiber connector according to claim 10, characterized in that: The limiting member and the insert core are respectively limited in the first direction and the second direction, and the limiting member and the housing are respectively limited in the first direction and the second direction; or, There are multiple limiters and they are spaced apart along the axial direction of the plug. The multiple limiters include a first limiter and a second limiter. The first limiter is respectively limited and matched with the housing and the plug in the first direction, and the second limiter is respectively limited and matched with the housing and the plug in the second direction. The first direction and the second direction are perpendicular to each other and are parallel to the cross section of the ferrule, and the cross section of the ferrule is perpendicular to the axial direction of the ferrule.

20. An optical communication network system, characterized in that: It comprises a first optical cable, a second optical cable and the optical fiber connector according to any one of claims 1 to 19, wherein the optical fiber connector is used to connect the first optical cable and the second optical cable.

21. A vehicle, characterized in that: The optical fiber connector comprises the optical fiber connector according to any one of claims 1 to 19 or the optical communication network system according to claim 20.

Images