A polar-adjustable fiber connector and fiber jumper

Abstract

The application provides a polarity-adjustable optical fiber connector and an optical fiber jumper, and relates to the technical field of optical communication. The optical fiber connector comprises a shell, two symmetrical connecting heads and an adjusting assembly. The two connecting heads are symmetrically arranged and installed side by side at the front end of the shell. The connecting head comprises a connecting part and a mounting part. The mounting part is fixed in the shell. The outer side of the connecting part is provided with a locking spring. The end of the connecting part towards the mounting part is provided with a rotatable rotating piece. The adjusting assembly comprises a rotating piece and a gear transmission device. The rotating piece is located at the rear end of the shell. One end of the gear transmission device is connected with the rotating piece, and the other end is connected with the two rotating pieces. The rotating piece can rotate relative to the shell. The connecting part is synchronously and reversely rotated around the axis by the cooperation of the rotating piece and the gear transmission device, so that the polarity of the connecting head is exchanged. When the connecting part is rotated by 180 degrees, the locking spring is rotated, so that the polarity exchange is completed without disassembling the connecting head, and the problems of complex operation and fiber damage caused by disassembly are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical communication, and in particular to a polarity-adjustable optical fiber connector and an optical fiber patch cord. BACKGROUND

[0002] An optical fiber patch cord is a key connection component in an optical communication network, which is assembled by an optical fiber connector and an optical cable, and is used for pluggable optical connection between devices or between a device and an optical distribution frame. Among them, a duplex LC optical fiber connector is widely used in data centers and high-speed communication systems (such as 40G / 100G SR4 modules) due to its high density and small size characteristics. The connector realizes quick butt joint with an adapter optical fiber interface through a pluggable mechanical structure, and a typical structure includes a shell, a ferrule, a spring clamping mechanism and other components.

[0003] In duplex communication, the polarity (i.e., the signal transmission direction) of the optical fiber patch cord must match the system topology. Common polarity standards include Type A and Type B, and the difference between the two is that the physical position arrangement of the transmitting end (Tx) and the receiving end (Rx) is different. If the polarity of the patch cord does not match the device port, the communication link cannot be established. Therefore, in actual application, it is often necessary to adjust the polarity by interchanging the positions of the duplex connector to ensure correct butt joint of Tx / Rx.

[0004] At present, the LC Uniboot connector is a common polarity-adjustable scheme on the market. It uses an integrated shell to package two LC connectors, and realizes polarity conversion by disassembling the shell, interchanging the positions of the two connectors, and reassembling. However, this scheme has the following key defects:

[0005] Complex operation: polarity conversion requires complete disassembly of the connector, involving steps such as buckle unlocking, spring resetting, and ferrule realignment, which is tedious and easy to cause component damage or contamination;

[0006] Risk of fiber cross damage: when interchanging the connectors, the duplex optical fiber is forced to cross and twist in the narrow shell space, which easily causes an increase in optical fiber micro-bending loss, and even causes breakage, affecting transmission performance and long-term reliability.

[0007] SUMMARY

[0008] Therefore, the present application provides a polarity-adjustable optical fiber connector and an optical fiber patch cord to solve the technical problems of complex polarity conversion operation and easy damage to optical fibers in the prior art duplex LC connector.

[0009] The technical scheme of the present application is implemented as follows:

[0010] On the one hand, the present application provides a polarity-adjustable optical fiber connector, comprising:

[0011] The shell;

[0012] Two connecting heads are symmetrically arranged and mounted side by side at the front end of the shell. The connecting head comprises a connecting part and a mounting part connected with each other. The mounting part is fixedly arranged at the inner side of the shell away from the connecting part. The outer side of the connecting part is provided with a locking baffle extending towards the shell. The end of the connecting part towards the mounting part is provided with a rotating piece penetrating through the mounting part and rotatable relative to the axis of the connecting head. The connecting part and the mounting part are provided with a through optical fiber channel in the axial direction;

[0013] The adjusting assembly comprises a rotating piece and a gear transmission device. The rotating piece is sleeved at the rear end of the shell. The gear transmission device is located in the shell. One end of the gear transmission device is connected with the rotating piece, and the other end is connected with the two rotating pieces respectively. The rotating piece is rotatable relative to the shell to drive the two connecting parts to synchronously and reversely rotate around the axis of the connecting head through the gear transmission device.

[0014] On the basis of the above technical scheme, preferably, the rotating piece is a sector structure with a 90° central angle. A coaxial 270° sector rotating groove is arranged on the mounting part. The contact surfaces between the two sides of the rotating piece and the inner walls of the rotating groove respectively form the rotation limiting surfaces of 0° position and 180° position. When the rotating piece rotates from the 0° position to the 180° position, the driving connecting part completes 180° rotation.

[0015] On the basis of the above technical scheme, preferably, the shell comprises a first shell and a second shell which are detachably connected. The first shell and the second shell both comprise a containing part and an operating part. The containing part is provided with a first chamber in the inside for fixing the mounting part. The mounting part is fixedly arranged in the mounting cavity of the containing part. The operating part is integrally connected to the rear end of the containing part. The operating part is provided with a second chamber in the inside. The outer diameter of the operating part is smaller than that of the containing part. The gear transmission device is arranged in the first chamber and the second chamber. The rotating piece is sleeved outside the operating part.

[0016] On the basis of the above technical scheme, preferably, the gear transmission device comprises:

[0017] A first gear ring and a second gear ring fixed on the two rotating pieces respectively;

[0018] A first idler and a second idler arranged in the first chamber. The first idler is engaged with the first gear ring and the second idler. The second idler is engaged with the second gear ring;

[0019] A transmission gear engaged with the first gear ring or the second gear ring;

[0020] A transmission shaft connecting the transmission gear and a driving gear;

[0021] The driving gear is arranged in the second chamber;

[0022] The rotating member is internally provided with a main gear ring, which is engaged with the driving gear.

[0023] On the basis of the above technical scheme, preferably, the gear transmission device further comprises a first driven gear and a second driven gear, the first driven gear and the second driven gear are symmetrically engaged on both sides of the driving gear, and are both engaged with the main gear ring.

[0024] On the basis of the above technical scheme, preferably, further comprising a tail sleeve, an outer thread is provided on the outer side of the one end of the operation part away from the containing part, the tail sleeve is sleeved on the outer side of the one end of the operation part away from the containing part, an inner thread is provided on the inner side of the tail sleeve, which is threadedly matched with the outer thread, and the tail sleeve is used for allowing the optical cable to pass into the inside of the shell and be connected with the optical fiber.

[0025] On the basis of the above technical scheme, preferably, the connector further comprises:

[0026] The fitting part is axially provided with an optical fiber channel, and the end thereof is provided with a connecting piece; the mounting part is provided with a containing cavity on the end face thereof, and the diameter of the containing cavity is greater than that of the optical fiber channel of the mounting part; the connecting part is provided with a through groove for the connecting piece to pass through; the connecting piece is snap-connected with the containing cavity and can be rotated by 180° relative to the through groove;

[0027] The plug core penetrates the optical fiber channels of the fitting part, the connecting part and the mounting part, and one end thereof extends out of the fitting part and the other end thereof extends into the inside of the shell to connect the optical fiber; the plug core is provided with a limiting part which abuts against a limiting step in the optical fiber channel of the fitting part;

[0028] The elastic member is sleeved on the plug core and abuts against the limiting part and the end face of the containing cavity at two ends thereof.

[0029] On the basis of the above technical scheme, preferably, further comprising an unlocking assembly, the unlocking assembly comprises:

[0030] The clamping plate is arranged in the clamping groove on the outer side of the containing part of the first shell and the second shell;

[0031] The pressing elastic piece is connected at one end with the clamping plate and extends above the locking elastic piece at the other end;

[0032] The trigger member comprises a rotating rod, a connecting plate and an operating rod, the rotating rod is pivoted between the two pressing elastic pieces, the connecting plate is fixed to the rotating rod and forms two pressing parts which respectively contact the two pressing elastic pieces, and the operating rod is connected with the rotating rod and extends outwardly;

[0033] The opening direction of the clamping groove of the first shell is 180° reversely symmetrically arranged with the opening direction of the clamping groove of the second shell.

[0034] On the basis of the above technical scheme, preferably, the bottom of the end of the connecting plate away from the rotating rod is provided with an arc-shaped isolation plate, the arc-shaped isolation plate is in elastic abutting fit with the clamping plate; wherein, when the operating rod rotates away from the connecting head, the isolation plate keeps the abutting state with the clamping plate, so that the pressing part is separated from the pressing spring; when the operating rod is subjected to the rotating force towards the connecting head, the isolation plate is compressed and deformed, the abutting state is released, and the pressing part contacts the pressing spring.

[0035] In a second aspect, the application discloses a fiber jumper, comprising a fiber cable and the polarity-adjustable fiber connector of the first aspect, and the two ends of the fiber cable are connected with the polarity-adjustable fiber connector respectively.

[0036] The application has the following beneficial effects relative to the prior art:

[0037] (1) Through the cooperation of the rotating piece and the gear transmission device, the two rotating pieces can be synchronously and reversely rotated, and then the two connecting parts are synchronously and reversely rotated, when the connecting part is rotated by 180°, the locking spring is rotated by 180°, and then the polarity is exchanged only by changing the position of the locking spring on the two connecting heads, so that the operation complexity and the fiber damage caused by disassembling the connecting head are avoided.

[0038] (2) Through the cooperation of the connecting part, the connecting part can only rotate circumferentially between the cooperation part and the mounting part, and the shaft movement of the device is avoided, and the cooperation facilitates the assembly of the ferrule in the adapter.

[0039] (3) Through the setting of the 90°-central-angle sector structure of the rotating piece and the 270°-sector-structure rotating groove coaxially arranged on the end face of the accommodating cavity, the 90°-central-angle sector structure of the rotating piece provides the basis for connection with the gear transmission device, and the 270°-sector-structure rotating groove provides the rotating angle of the rotating piece, so that the rotating piece can only rotate within the range of 0° to 180°. In this way, the connecting part can only rotate and exchange at 0° and 180°, and when the rotation is in place, the connecting part cannot continue to rotate, so that the position of the locking spring on the connecting head is always on the top surface or the bottom surface, so that after the locking spring is rotated by 180°, the fiber connector can be directly inserted into the adapter interface, the polarity is exchanged, and the reliable communication connection between the fiber connector and the adapter is ensured.

[0040] (4) By setting the outer diameter of the operation part to be smaller than the outer diameter of the accommodating part, on the one hand, the internal space of the shell can be reasonably utilized, and on the other hand, the rotating part is sleeved outside the operation part, so that the volume of the rotating part can be reduced, thereby reducing the volume of the entire fiber optic connector. On the third aspect, by sleeving the rotating part on the operation part, the unlocking assembly can be conveniently mounted outside the accommodating part, thereby realizing a compact structure of the entire fiber optic connector.

[0041] (5) By the setting of the gear transmission device, the rotating part drives the driving gear to rotate through the main gear ring in the rotating process, the driving gear transmits the torque to the transmission gear through the transmission shaft, and the transmission gear drives the first gear ring or the second gear ring to rotate. When the transmission gear drives the first gear ring to rotate, the first gear ring changes the transmission direction by two idlers in the rotating process, so that the direction of the second gear ring is opposite to that of the first gear ring, thereby realizing the synchronous rotation of the two connecting parts in opposite directions, and the 0° and 180° position changes of the locking spring can be completed, so that the polarity of the fiber optic connector can be easily adjusted without disassembling the connector from the shell, and the entire operation process is simple and convenient.

[0042] (6) By introducing the first driven gear and the second driven gear, the driving gear does not need to be set to have a large outer diameter, and the first driven gear and the second driven gear can make up for the deficiency of the outer diameter of the driving gear, so that the main gear ring can be meshed with the driving gear by means of the first driven gear and the second driven gear. In this way, the size of the operation part and the rotating part can not be changed, thereby realizing the effective transmission relationship between the rotating part and the gear transmission device.

[0043] (7) By the threaded connection between the tail sleeve and the operation part, the rotating part can be limited between the accommodating part and the tail sleeve, so that it cannot move axially, and in addition, the tail sleeve is threadedly connected with the shell, so that the optical cable and the optical fiber inside the shell can be connected.

[0044] (8) By setting the unlocking assembly, when it is needed to pull out the fiber optic connector from the adapter, only the end of the operating rod away from the rotating rod needs to be lifted up, at this time, by using the seesaw principle, the connecting rod rotates downward around the rotating rod, so that the two pressing parts on the connecting plate simultaneously apply downward force to the two pressing springs, thereby realizing the unlocking of the clamping parts on the two pressing springs and the adapter. In the entire operation process, it is simple and convenient, and the plug-in connection between the fiber optic connector and the adapter can be quickly and conveniently realized in a high-density data center. In addition, when the polarity needs to be adjusted, the unlocking assembly can be quickly disassembled from the shell without affecting the rotation of the connecting part. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained on the basis of these drawings without creative labor.

[0046] Figure 1 The first perspective view of the optical fiber connector disclosed in the present application;

[0047] Figure 2 The perspective view of the connector disclosed in the present application;

[0048] Figure 3 The first perspective view of the connector disclosed in the present application;

[0049] Figure 4 The second perspective view of the connector disclosed in the present application;

[0050] Figure 5 The top view of the connector disclosed in the present application;

[0051] Figure 6 The Figure 5 The plane section view at A-A in the above figure;

[0052] Figure 7 The perspective view of the optical fiber connector disclosed in the present application after removing the tail cover and the unlocking assembly;

[0053] Figure 8 The perspective view of the gear transmission device disclosed in the present application;

[0054] Figure 9 The perspective view of the adjusting assembly disclosed in the present application;

[0055] Figure 10 The second perspective view of the optical fiber connector disclosed in the present application;

[0056] Figure 11 The perspective view of the unlocking assembly disclosed in the present application;

[0057] Figure 12 The top view of the optical fiber connector disclosed in the present application;

[0058] Figure 13 The Figure 12 The plane section view at B-B in the above figure;

[0059] Reference signs:

[0060] 1, housing; 11, first housing; 12, second housing; 10a, accommodating part; 10b, operation part; 10a1, first cavity; 10b1, second cavity; 100, clamping groove;

[0061] 2, connector; 21, connecting part; 22, mounting part; 211, locking elastic sheet; 2111, clamping part; 2112, linkage part; 212, rotating sheet; H, optical fiber channel; 221, rotating groove; 23, matching part; 231, connecting sheet; 222, accommodating cavity; 213, through groove; 24, plug core; 241, limiting part; 232, limiting step; 25, elastic member; G, optical fiber;

[0062] 3, adjusting assembly; 31, rotating member; 32, gear transmission device; 321, first gear ring; 322, second gear ring; 323, first idler gear; 324, second idler gear; 325, transmission gear; 326, transmission shaft; 327, driving gear; 311, main gear ring; 328, first driven gear; 329, second driven gear;

[0063] 4, tail sleeve; L, optical cable; 5, unlocking assembly; 51, clamping plate; 52, pressing elastic sheet; 53, trigger member; 531, rotating rod; 532, connecting plate; 533, operation rod; 5321, pressing part; 5322, arc-shaped isolation plate; 54, protective cover; 220, fan-shaped support plate. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0065] As shown in the accompanying drawings, Figure 1 in conjunction with Figures 2-9 the embodiments of the present application disclose a polar adjustable optical fiber connector, which comprises a housing, a connector 2 and an adjusting assembly 3.

[0066] Among them, the housing 1 is the base body of the whole optical fiber connector, which is used to provide the mounting basis of the connector 2 and the adjusting assembly 3.

[0067] The two connecting heads 2 are symmetrically arranged and installed side by side at the front end of the shell 1, thereby forming a double-station LC optical fiber connector. The connecting head 2 has a cuboid structure and is used to be connected with the optical fiber interface of an adapter. The connecting head 2 comprises a connecting portion 21 and a mounting portion 22 connected with each other, wherein the mounting portion 22 is fixedly arranged inside the shell at the end away from the connecting portion 21. Specifically, a section of the mounting portion 22 having a cuboid structure can be fixed in the shell by clamping, which is convenient for operation. The connecting portion 21 is arranged to facilitate the assembly of a ferrule 24 having an optical fiber between the connecting head 2 and the mounting portion 22. In this embodiment, the connecting portion 21 and the mounting portion 22 are axially limited by a through optical fiber channel H, which provides a mounting space for the ferrule 24.

[0068] In this embodiment, the connecting portion 21 is provided with a locking spring 211 extending towards the shell. Specifically, the locking spring 211 is located on the outer surface of the connecting portion 21 in the vertical direction. The locking spring 211 can be elastically deformed when subjected to pressure. The locking spring 211 is provided with a clamping portion 2111. When the connecting head 2 is inserted into the optical fiber interface of the adapter, the clamping portion 2111 can be clamped with the clamping groove inside the interface of the adapter, thereby achieving reliable connection between the optical fiber connector and the adapter. When the locking spring 211 is pressed, the clamping portion 2111 and the clamping groove of the adapter interface can be separated, and the entire optical fiber connector and the adapter can be separated.

[0069] In this embodiment, the mounting portion 22 is fixed in position on the shell. If the relative position of the connecting portion 21 and the mounting portion 22 is fixed, the orientation of the locking spring 211 above the connecting head 2 is also fixed. The entire optical fiber connector can only be inserted into the interface of the adapter in one direction, and the clamping portion 2111 of the locking spring 211 can be clamped with the clamping groove of the adapter. When the transmitting end and the receiving end of the optical fiber interface of the adapter change signals, the polarity of the connecting head of the optical fiber connector needs to be exchanged to adapt the correct conduction of the optical path. However, the connecting head 2 cannot be inserted into the interface of the adapter by rotating the optical fiber connector by 180°, because the locking spring 211 and the clamping groove of the adapter are now reversed by 180°, which restricts the insertion of the connecting head 2.

[0070] If the two connecting heads 2 are disassembled from the shell and then exchanged in position, the optical fibers on the connecting heads 2 will be crossed and bent. On the one hand, the process of disassembling the connecting heads 2 is complex, and on the other hand, the optical fibers will be unnecessarily damaged.

[0071] To this end, the scheme adopted by the embodiment is that the connecting portion 21 is rotationally arranged at the end of the mounting portion 22 away from the shell, specifically, the connecting head 2 has a rotating piece 212 passing through the mounting portion 22 and rotatable relative to the axis of the connecting head 2 at the end of the mounting portion 22, the rotating piece 212 extends to the inside of the shell, and when the rotating piece 212 rotates around the axis of the connecting head 2, the connecting head 2 can be rotated around the axis of the connecting head 2 relative to the mounting portion 22.

[0072] To realize the rotation of the connecting head 2, the embodiment is completed by the adjusting assembly 3, specifically, the adjusting assembly 3 includes a rotating piece 31 and a gear transmission device 32, the rotating piece 31 is sleeved at the rear end of the shell, one end of the gear transmission device 32 is connected with the rotating piece 31, and the other end is connected with the two rotating pieces 212 respectively, the rotating piece 31 is rotatable relative to the shell to drive the two connecting portions 21 to synchronously and reversely rotate around the axis of the connecting head 2 through the gear transmission device 32. In some embodiments, the rotating piece 31 is in a cylindrical structure, a gear ring is arranged on the inner side of the rotating piece 31, and the two rotating pieces 212 are synchronously and reversely rotated through the gear ring and the gear transmission device 32.

[0073] By the cooperation of the rotating piece 31 and the gear transmission device 32, the two rotating pieces 212 can be synchronously and reversely rotated, and then the two connecting portions 21 are synchronously and reversely rotated, when the connecting portion 21 rotates by 180°, the locking spring 211 is rotated by 180°, and then the polarity exchange is realized only by changing the position of the locking spring 211 on the two connecting heads 2 without changing the position of the connecting head 2, which avoids the problems of complex operation and fiber damage caused by disassembling the connecting head 2.

[0074] To ensure the structure stability of the connecting head 2 on the mounting portion 22 and ensure that the ferrule 24 in the connecting head 2 can be reliably assembled and function, referring to the accompanying drawings Figures 2-6 The connecting head 2 is further structurally arranged, specifically, the connecting head 2 further includes a matching portion 23, a ferrule 24 and an elastic member 25.

[0075] The matching portion 23 is also arranged in a square structure, which is arranged at the side of the connecting portion 21 away from the mounting portion 22, and the matching portion 23 is also axially provided with a fiber channel H for the ferrule 24 to pass through, and it is worth noting that the fiber channels H in the matching portion 23, the connecting portion 21 and the mounting portion 22 are communicated in the axial direction for the ferrule 24 to pass through in the axial direction.

[0076] Since the connecting portion 21 passes through the mounting portion 22 along the axial direction through the rotating piece 212, the connecting portion 21 can rotate relative to the mounting portion 22 in the circumferential direction, but the axial direction of the connecting portion 21 and the mounting portion 22 is not constrained. Therefore, the cooperating portion 23 is arranged to constrain the axial direction of the connecting portion 21 and the mounting portion 22, so as to avoid the displacement of the connecting portion 21. In order to solve this problem, the mounting portion 22 is provided with a receiving groove at the end surface facing the connecting portion 21, and the diameter of the receiving groove is greater than the fiber channel H of the mounting portion 22. The rotating piece 212 of the connecting portion 21 is inserted into the receiving groove, and the inner end surface of the receiving groove extends out of the mounting portion 22. In this example, the inner end surface of the receiving groove is coaxially provided with a rotating groove 221. Therefore, the rotating piece 212 passes through the rotating groove 221 and can rotate in the circumferential direction by a certain angle along the rotating groove 221.

[0077] The connecting portion 21 is provided with a coaxial through groove 213, and the through groove 213 is in the shape of a circular arc. The end surface of the cooperating portion 23 facing the connecting portion 21 is provided with a connecting piece 231. The connecting piece 231 is symmetrically arranged in two parts. The connecting piece 231 passes through the through groove 213 and extends into the receiving cavity 222. The outer wall of the connecting piece 231 is provided with a buckle, and the side wall of the receiving cavity 222 is provided with a clamping groove. The connecting piece 231 and the side wall of the receiving cavity 222 are connected by the buckle cooperation. Since the cooperating portion 23 is fixedly connected with the mounting portion 22 through the connecting piece 231, the connecting portion 21 is between the cooperating portion 23 and the mounting portion 22, and is axially constrained. The connecting portion 21 can only rotate in the circumferential direction between the cooperating portion 23 and the mounting portion 22. It is worth noting that the central angle of the through groove 213 is at least greater than 180°. In this way, when the connecting portion 21 rotates in the circumferential direction, the connecting piece 231 can slide in the circumferential direction in the through groove 213.

[0078] The ferrule 24 is used to establish an optical path connection between the optical fiber and the signal end in the fiber interface of the adapter. In this example, the ferrule 24 passes through the fiber channel H of the cooperating portion 23, the connecting portion 21 and the mounting portion 22, and one end extends out of the cooperating portion 23 and the other end extends into the shell to connect the optical fiber. The assembly of the optical fiber and the ferrule 24 belongs to the prior art. The optical fiber is mounted in the shell, and the external optical cable L is introduced into the shell and connected with the optical fiber.

[0079] The one end of the ferrule 24 towards the matching part 23 is provided with a limiting part 241, and the matching part 23 is provided with a limiting step 232 in the optical fiber channel H, the limiting step 232 is towards the connecting part 21 side, thus the limiting part 241 is abutted to the limiting step 232, the length of the ferrule 24 extending out of the matching part 23 can be limited, the elastic member 25 is sleeved on the ferrule 24, and the two ends are abutted to the limiting part 241 and the inner end face in the accommodating cavity 222 respectively. Thus, when the connector 2 and the adapter are inserted and matched, the ferrule 24 is subjected to extrusion force and moves axially towards the shell direction, so as to compress the elastic member 25, at the same time, the elastic potential energy of the elastic member 25 drives the limiting part 241 to move towards the matching part 23 direction, so as to reliably butt the end face of the ferrule 24 and the optical fiber interface signal end in the adapter.

[0080] In the embodiment, the elastic member 25 is preferably a spring or other elastic deformation component.

[0081] It is worth noting that, since the ferrule 24 needs to pass through the optical fiber channel H of the connecting part 21, and the elastic member 25 is sleeved on the ferrule 24, the elastic member 25 needs to be abutted to the limiting part 241 of the ferrule 24 and the inner end face in the accommodating cavity 222, therefore, the rotating piece 212 of the connecting part 21 is located outside the elastic member 25, the rotating piece 212 needs to penetrate through the inner end face of the accommodating cavity 222, since the inner end face of the accommodating cavity 222 needs to provide the positioning basis of the elastic member 25, therefore, the rotating groove 221 on the inner end face of the accommodating cavity 222 cannot be set as a whole circle.

[0082] Therefore, the embodiment adopts the following technical scheme, the rotating piece 212 is set as a 90° central angle sector structure, the rotating groove 221 of the 270° sector structure is coaxially arranged on the inner end face of the accommodating cavity 222, and the contact surfaces between the two sides of the rotating piece 212 and the inner wall of the rotating groove 221 respectively constitute the rotation limiting surfaces of 0° position and 180° position; wherein, when the rotating piece 212 rotates from the 0° position to the 180° position, the driving connecting part 21 completes 180° rotation.

[0083] By adopting the above technical scheme, the 90° sector structure rotating piece 212 provides the basis for being connected with the gear transmission device 32, and the 270° sector structure rotating groove 221 provides the rotation angle of the rotating piece 212, so that the rotating piece 212 can only rotate within the range of 0° to 180°. In this way, the connecting part 21 can only rotate at 0° and 180° positions, and when rotated to the position, the connecting part 21 cannot continue to rotate, so as to ensure that the position of the locking spring 211 on the connector 2 is always at the top surface or the bottom surface, so as to ensure that after the locking spring 211 rotates by 180°, the optical fiber connector can be directly inserted into the adapter interface to complete the polarity reversal, and ensure that the optical fiber connector and the adapter can be reliably connected in communication.

[0084] As some embodiments, the housing of the embodiment comprises a first housing 11 and a second housing 12 which are detachably connected by a clamping manner, the first housing 11 and the second housing 12 each comprise a containing part 10a and an operating part 10b, the containing part 10a is provided with a first cavity 10a1 for fixing the mounting part 22, the operating part 10b is integrally connected to the rear end of the containing part 10a, the operating part 10b is provided with a second cavity 10b1, the outer diameter of the operating part 10b is smaller than the outer diameter of the containing part 10a, a gear transmission device 32 is installed in the first cavity 10a1 and the second cavity 10b1, and a rotating part 31 is sleeved outside the operating part 10b.

[0085] In the embodiment, since the connector 2 is arranged side by side at the front end of the containing part 10a, most of the structure of the gear transmission device 32 is installed in the first cavity 10a1 of the containing part 10a, and only a small part of the structure is installed in the second cavity 10b1 of the operating part 10b, so the outer diameter of the operating part 10b is set to be smaller than the outer diameter of the containing part 10a, which on the one hand can reasonably utilize the internal space of the housing, and on the other hand, the rotating part 31 is sleeved outside the operating part 10b, which can reduce the volume of the rotating part 31, thereby reducing the volume of the entire fiber connector. Thirdly, by sleeving the rotating part 31 on the operating part 10b, the unlocking assembly 5 described below can be installed outside the containing part 10a, thereby realizing a compact structure of the entire fiber connector.

[0086] The embodiment shows a preferred structure of the gear transmission device 32, which is described with reference to the accompanying drawings Figure 8 and 9 as shown, which comprises a first ring gear 321, a second ring gear 322, a first idler gear 323, a second idler gear 324, a transmission gear 325, a transmission shaft 326 and a drive gear 327.

[0087] Among them, the first ring gear 321 and the second ring gear 322 are respectively fixedly sleeved outside the two rotating pieces 212, since the rotating piece 212 is a 90° sector structure, the contact area between the ring gear and the rotating piece 212 is small, which may cause the rotating piece 212 to be radially deformed, for this reason, the mounting part 22 is fixedly provided with a 90° sector support plate 220 at one end towards the housing, the sector support plate 220 and the rotating groove 221 are coaxially arranged, and the sector support plate and the rotating groove 221 are 360° complementary. By this arrangement, the ring gear is sleeved on the sector support plate 220 and can rotate relative to the sector support plate 220, the sector support plate 220 and the rotating piece 212 can cooperate with each other to provide radial direction constraint for the ring gear, and ensure that the ring gear does not jump radially.

[0088] The first idler wheel 323 and the second idler wheel 324 are rotatably arranged between the first gear ring 321 and the second gear ring 322, the first idler wheel 323 is engaged with the first gear ring 321 and the second idler wheel 324, the second idler wheel 324 is engaged with the second gear ring 322, the rotation direction of the first gear ring 321 and the second gear ring 322 is opposite through the change of the transmission direction of the two idler wheels, so that the connecting parts 21 on the two connecting heads 2 rotate in the opposite direction synchronously when the first gear ring 321 and the second gear ring 322 rotate in the opposite direction.

[0089] It is worth noting that the two connecting heads 2 rotate outward when rotating, so as to avoid interference when the two connecting heads 2 rotate inward.

[0090] The transmission gear 325 is engaged with the first gear ring 321 or the second gear ring 322, the drive gear 327 is arranged in the second cavity 10b1, the transmission shaft 326 connects the transmission gear 325 and the drive gear 327, and the rotating part 31 is in a cylindrical structure, and the inner side of the rotating part 31 is provided with the main gear ring 311, and the main gear ring 311 is engaged with the drive gear 327.

[0091] By rotating the rotating part 31, the drive gear 327 is rotated through the main gear ring 311 in the rotating process of the rotating part 31, the drive gear 327 transmits the torque to the transmission gear 325 through the transmission shaft 326, the transmission gear 325 drives the first gear ring 321 or the second gear ring 322 to rotate, for example, when the transmission gear 325 drives the first gear ring 321 to rotate, the rotation direction of the second gear ring 322 is opposite to that of the first gear ring 321 through the change of the transmission direction of the two idler wheels in the rotating process of the first gear ring 321, so that the two connecting parts 21 rotate in the opposite direction synchronously, and the position change of the locking spring 2110° and 180° is completed, so that the polarity of the fiber connector is easily adjusted, and the connecting head 2 does not need to be disassembled from the shell, and the whole operation process is simple and convenient.

[0092] It is worth noting that the double gear rings can be arranged on the first gear ring 321 or the second gear ring 322 in the axial direction, so that the transmission gear 325 is engaged when the two idler wheels are engaged. In addition, it should be noted that the number of teeth of the transmission gear 325, the first gear ring 321 and the second gear ring 322 is the same, so that although the first gear ring 321 and the second gear ring 322 are separated by the first idler wheel 323 and the second idler wheel 324, the rotation speed of the first gear ring 321 or the second gear ring 322 is the same due to the same number of teeth of the transmission gear 325, the first gear ring 321 and the second gear ring 322 and the step-by-step offset of the gear transmission ratio.

[0093] Similar to the "idler effect": the first idler 323 and the second idler 324 only change the direction, and do not change the final speed ratio, so that the two connecting parts 21 can rotate synchronously.

[0094] Since the outer diameter of the operation part 10b is small, the drive gear 327 is arranged in the second cavity 10b1, and needs to extend out of the operation part 10b to mesh with the main gear ring 311, which makes the diameter of the drive gear 327 larger, resulting in that the second cavity 10b1 cannot provide enough space, and the width of the operation part 10b needs to be increased, which makes the outer diameter of the rotating part 31 larger, and the whole fiber connector larger.

[0095] Therefore, the embodiment adopts the following scheme: the gear transmission device 32 further comprises a first gear 328 and a second gear 329, the first gear 328 and the second gear 329 are symmetrically arranged on both sides of the drive gear 327 and are in meshing connection with the main gear ring 311. Through the arrangement, by introducing the first gear 328 and the second gear 329, the drive gear 327 does not need to be arranged with a large outer diameter, and the first gear 328 and the second gear 329 can make up for the insufficient outer diameter of the drive gear 327, so that the main gear ring 311 can mesh with the drive gear 327 through the first gear 328 and the second gear 329. In this way, the size of the operation part 10b and the rotating part 31 can not be changed, so that the rotating part 31 and the gear transmission device 32 can establish an effective transmission relationship.

[0096] In addition, it is worth noting that through the arrangement of the first gear 328 and the second gear 329, the rotating part 31 can always rotate around the center of the drive gear 327, and the main gear ring 311 can effectively mesh with the first gear 328 and the second gear 329 in the radial direction.

[0097] In the embodiment, the rotating part 31 has a cylindrical structure and is arranged outside the operation part 10b. Although the rotating part 31 can rotate circumferentially relative to the operation part 10b, it has no position limit in the axial direction. Therefore, the fiber connector of the embodiment further comprises a tail sleeve 4, an outer thread is arranged on the outer side of the end of the operation part 10b away from the accommodating part 10a, the tail sleeve 4 is sleeved on the outer side of the end of the operation part 10b away from the accommodating part 10a, and an inner thread is arranged on the inner side of the tail sleeve 4 and threadedly connected with the outer thread. The tail sleeve 4 is used for the optical cable L to pass into the inside of the shell and be connected with the optical fiber.

[0098] Through the threaded connection between the tail sleeve 4 and the operation part 10b, the rotating part 31 can be limited between the accommodating part 10a and the tail sleeve 4, so that it cannot move axially. In addition, through the threaded connection between the tail sleeve 4 and the shell, the optical cable L and the optical fiber in the inside of the shell can be conveniently connected.

[0099] It should be noted that the two connecting portions 21 can be driven to rotate in opposite directions synchronously by rotating the rotating member 31 and by the gear transmission device 32, but if the two connecting portions 21 are manually operated to rotate, it will be very difficult because the gear transmission device 32 needs to transmit torque step by step, thus, a self-locking phenomenon will exist, in this way, the rotating member 31 and the operation portion 10b do not need to be provided with a position locking structure, and only need to rotate the rotating member 31 in a specified direction.

[0100] In a high-density data center, the number of fiber connectors is large, the layout is complex, and the spacing between adjacent fiber connectors is extremely small. Therefore, in a high-density scenario, it can be difficult for a finger to press the locking spring 211 to unlock the connector.

[0101] To this end, the fiber connector disclosed in the embodiment is also provided with an unlocking assembly 5, which is used to press the locking spring 211 to unlock the fiber connector and the adapter. Referring to FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14, the specific structure of the unlocking assembly 5 will be described below. Figure 7 、 10 , 11, 12, 13, and 14, the specific structure of the unlocking assembly 5 will be described below.

[0102] Among them, the first shell 11 and the second shell 12 are provided with clamping grooves 100 outside the accommodating portion 10a, and the clamping grooves 100 provide a mounting basis for the unlocking assembly 5.

[0103] In the embodiment, the clamping plate 51 can be horizontally inserted into the clamping groove 100 and connected with the clamping groove 100 by buckling.

[0104] The pressing spring 52 connects the clamping plate 51 at one end and extends upwardly above the locking spring 211 at the other end. The end of the pressing spring 52 is located above the linkage portion 2112 of the locking spring 211, and the end of the pressing spring 52 is arc-shaped and protruding, so as to cooperate with the recessed linkage portion 2112. When the pressing spring 52 is subjected to a downward pressure, the force is transmitted to the linkage portion 2112, so that the locking spring 211 is deformed towards the connecting portion 21, and the clamping portion 2111 on the locking spring 211 is separated from the clamping groove in the adapter. At this time, the entire fiber connector can be easily pulled out of the adapter by pulling.

[0105] In order to realize the pressing operation of the pressing spring 52, the embodiment is provided with a trigger 53, which comprises a rotating rod 531, a connecting plate 532 and an operating rod 533. The rotating rod 531 is pivotally connected between the two pressing springs 52. The connecting plate 532 is fixed to the rotating rod 531 and forms two pressing portions 5321, which respectively contact the two pressing springs 52. The operating rod 533 is connected to the rotating rod 531 and extends outward.

[0106] When it is needed to pull out the fiber connector from the adapter, only the end of the operating rod 533 away from the rotating rod 531 needs to be lifted upward. At this time, by using the seesaw principle, the connecting rod rotates downward around the rotating rod 531, so that the two pressing portions 5321 on the connecting plate 532 synchronously apply downward force to the two pressing springs 52, thereby realizing the simultaneous unlocking of the clamping portions 2111 on the two pressing springs 52 and the adapter. The whole operation process is simple and convenient, and the fiber connector and the adapter can be quickly and conveniently connected and disconnected in a high-density data center.

[0107] When the polarity needs to be adjusted, since the end of the pressing spring 52 is located on the upper part of the locking spring 211, the rotation of the locking spring 211 is limited. Therefore, when the polarity is adjusted, the connecting plate 532 can be horizontally pulled out of the clamping groove 100 to realize the disconnection of the whole unlocking assembly 5 and the shell. At this time, the connecting portion 21 can be rotated by 180° by the rotating member 31 to adjust the polarity.

[0108] In the embodiment, the opening direction of the clamping groove 100 of the first shell 11 is 180° reversely symmetrically arranged with the opening direction of the clamping groove 100 of the second shell 12. Therefore, when the polarity of the fiber connector is adjusted, the unlocking assembly 5 can be inserted into the clamping groove 100 in the opposite direction. For example, when the locking spring 211 is initially oriented towards the first shell 11, the unlocking assembly 5 is taken out of the clamping groove 100 of the first shell 11. When the locking spring 211 is rotated to face the second shell 12, the unlocking assembly 5 is inserted into the clamping groove 100 of the second shell 12. It is ensured that the pressing springs 52 in the unlocking assembly 5 can be connected with the locking spring 211 in the opposite direction.

[0109] In the embodiment, in order to ensure that the pressing portion 5321 is not in contact with the pressing spring 52 in the initial state, and to avoid unlocking caused by accidental touch, the arc-shaped isolation plate 5322 is arranged at the bottom of the end of the connecting plate 532 away from the rotating rod 531, and the arc-shaped isolation plate 5322 is in elastic abutting fit with the clamping plate 51; when the operating rod 533 rotates away from the connector 2, the isolation plate keeps the abutting state with the clamping plate 51, so that the pressing portion 5321 is separated from the pressing spring 52; when the operating rod 533 is subjected to the rotating force towards the connector 2, the isolation plate is compressed and deformed, the abutting state is released, and the pressing portion 5321 contacts the pressing spring 52.

[0110] Specifically, the arc-shaped isolation plate 5322 is arranged, so that the operating rod 533 rotates away from the connector 2 in the initial state, so that the pressing portion 5321 and the pressing spring 52 keep a separated relationship. Since the isolation plate is arc-shaped, it has a certain elastic potential energy, and the operating rod 533 is located outside the rotating member 31, and is positionally constrained by the rotating member 31. When the operating rod 533 is lifted upwards, the isolation plate is compressed, and the pressing portion 5321 contacts the pressing spring 52 at this time, so that the pressing force is applied, and the locking spring 211 and the adapter are unlocked. Therefore, in the initial state, the unlocking phenomenon caused by accidental touch can be avoided, and the reliable connection of the fiber connector and the adapter can be ensured.

[0111] As some embodiments, the unlocking assembly 5 further comprises a protective cover 54, which is fixedly arranged on the connecting plate 532 and protects the pressing spring 52 and the trigger 53. It is worth noting that two notches are arranged in parallel on the connecting groove, so that the protective cover 54 can pass through.

[0112] The application further discloses an optical fiber jumper cable, which comprises a cable L and the polarity-adjustable optical fiber connector disclosed in the above embodiment, and the two ends of the cable L are connected with the polarity-adjustable optical fiber connector respectively. The optical fiber connector has the function of quickly adjusting the polarity, so that the optical fiber jumper cable can quickly adjust the polarity when connected between the adapter and the communication equipment, and the use operation is more convenient.

[0113] The above only describes the preferred embodiments of the application and should not be used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A polarity-adjustable fiber optic connector, characterized in that, include: case; Two symmetrically arranged connectors are installed side by side at the front end of the housing. Each connector includes a connecting part and a mounting part that are connected to each other. The end of the mounting part away from the connecting part is fixedly disposed inside the housing. A locking spring is provided on the outside of the connecting part and extends toward the housing. The end of the connecting part facing the mounting part has a rotating piece that passes through the mounting part and can rotate relative to the axis of the connector. The connecting part and the mounting part define a through optical fiber channel in the axial direction. The adjustment assembly includes a rotating component and a gear transmission device. The rotating component is sleeved on the rear end of the housing, and the gear transmission device is located inside the housing. One end of the gear transmission device is connected to the rotating component, and the other end is connected to two rotating plates respectively. The rotating component can rotate relative to the housing so as to drive the two connecting parts to rotate synchronously in opposite directions around the axis of the connecting head through the gear transmission device.

2. The polarity-adjustable fiber optic connector as described in claim 1, characterized in that: The rotating plate is a fan-shaped structure with a central angle of 90°. The mounting part is provided with a coaxial 270° fan-shaped rotating groove. The contact surfaces between the two sides of the rotating plate and the inner wall of the rotating groove respectively form rotation limiting surfaces at the 0° position and the 180° position. When the rotating plate rotates from the 0° position to the 180° position, the driving connection part completes the 180° rotation.

3. The polarity-adjustable fiber optic connector as described in claim 1, characterized in that: The housing includes a first housing and a second housing that are detachably connected. Both the first housing and the second housing include a receiving part and an operating part. The receiving part has a first chamber for fixing the mounting part. The operating part is integrally connected to the rear end of the receiving part. The operating part has a second chamber. The outer diameter of the operating part is smaller than the outer diameter of the receiving part. A gear transmission device is installed in the first chamber and the second chamber. The rotating part is sleeved on the outside of the operating part.

4. The polarity-adjustable fiber optic connector as described in claim 3, characterized in that: The gear transmission device includes: The first gear ring and the second gear ring are respectively fixed on the two rotating plates; The first idler gear and the second idler gear are disposed in the first chamber. The first idler gear simultaneously engages with the first gear ring and the second idler gear, and the second idler gear engages with the second gear ring. The transmission gear meshes with either the first or second gear ring. A drive shaft connects the transmission gear and the drive gear; The drive gear is located in the second chamber; The rotating component has a cylindrical structure with a main gear ring on its inner side, which meshes with the drive gear.

5. The polarity-adjustable fiber optic connector as described in claim 4, characterized in that: The gear transmission device further includes a first driven gear and a second driven gear, which are symmetrically meshed on both sides of the drive gear and are both connected to the main gear ring.

6. The polarity-adjustable fiber optic connector as described in claim 3, characterized in that: It also includes a tail sleeve, wherein the outer side of the end of the operating part away from the receiving part has an external thread, the tail sleeve is sleeved on the outer side of the end of the operating part away from the receiving part, and the inner side of the tail sleeve has an internal thread that mates with the external thread. The tail sleeve is used to allow the optical cable to pass into the housing and connect to the optical fiber.

7. The polarity-adjustable fiber optic connector as described in claim 2, characterized in that: The connector also includes: The mating part has an axially opened optical fiber channel with a connecting piece at its end. The end face of the mounting part has a receiving cavity with a diameter larger than the optical fiber channel of the mounting part. The connecting part has a through groove for the connecting piece to pass through. The connecting piece is snapped into the receiving cavity and can rotate 180° relative to the through groove. The ferrule is a fiber optic channel that passes through the mating part, the connecting part, and the mounting part. One end extends out of the mating part, and the other end extends into the housing to connect to the fiber optic cable. The ferrule is provided with a limiting part that abuts against the limiting step in the fiber optic channel of the mating part. The elastic element is sleeved on the insert, with its two ends abutting against the limiting part and the inner end face of the receiving cavity, respectively.

8. The polarity-adjustable fiber optic connector as described in claim 3, characterized in that: It also includes an unlocking component, which includes: A snap-fit ​​plate is disposed in a snap-fit ​​groove on the outside of the receiving portion of the first housing and the second housing; Press the spring clip, one end connects to the snap plate, and the other end tilts upward and extends above the locking spring clip; The trigger includes a rotating rod, a connecting plate, and an operating rod. The rotating rod is pivotally connected between two pressing springs. The connecting plate is fixed to the rotating rod and forms two pressing parts that respectively contact the two pressing springs. The operating rod is connected to the rotating rod and extends outward. The opening direction of the snap-fit ​​groove of the first housing is symmetrically arranged in opposite directions to the opening direction of the snap-fit ​​groove of the second housing at 180°.

9. The polarity-adjustable fiber optic connector as described in claim 8, characterized in that: The bottom of the connecting plate away from the rotating rod is provided with an arc-shaped isolation plate, which forms an elastic abutment fit with the snap-fit ​​plate; wherein, when the operating rod rotates away from the connecting head, the isolation plate remains in abutment with the snap-fit ​​plate, causing the pressing part to disengage from the pressing spring; when the operating rod is subjected to a rotational force in the direction of the connecting head, the isolation plate is compressed and deformed, releasing the abutment state and causing the pressing part to contact the pressing spring.

10. A fiber optic patch cord, comprising an optical cable and a polarity-adjustable fiber optic connector as described in any one of claims 1 to 9, characterized in that: The two ends of the optical cable are connected to polarity-adjustable fiber optic connectors.

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