Optical fiber connector with self-floating inner core

Abstract

The application discloses an optical fiber connector with a self-floating inner core, which comprises a plug assembly, a bonding sleeve, a supporting sleeve made of elastic material, one end of the supporting sleeve being connected with the plug assembly and the other end being connected with the bonding sleeve, and the end of an optical cable being nested in the supporting sleeve, and the supporting sleeve being provided with an internal cavity for optical fibers to pass through. The application uses the supporting sleeve as a branch component between the bonding sleeve and the plug assembly, increases a secondary floating function on the basis of reserving the step floating structure of the bonding sleeve, realizes the two-stage floating function, compensates the primary floating structure of the plug, and enables the inner core plug to swing along any radial direction, so that the floating function in multiple directions is realized. The application solves the problem that the original structure can only swing in a single direction and solves the problems of high assembly requirement and high product failure rate of the existing connector.

Description

Technical Field

[0001] This invention relates to an optical fiber connector, and more specifically to an optical fiber connector with a self-floating inner core. Background Technology

[0002] Outdoor fiber optic connectors are widely used in outdoor RRU equipment. In RRU equipment, the fiber optic interfaces are mostly... Figure 19 As shown, it includes a built-in optical module plug and an external socket. The optical module plug is used to transmit optical signals after mating with the fiber optic connector, and the socket mates with the outer shell of the fiber optic connector, providing tensile strength and sealing for the connector.

[0003] However, in practical applications, the installation positions of optical modules from different manufacturers are different, and the axial dimensions of the optical module plugs are inconsistent, such as... Figure 19 As shown, the compatible fiber optic connectors are required to have high versatility, that is, the connectors need to have axial adjustment function to adapt to the equipment requirements of different manufacturers.

[0004] Existing outdoor fiber optic connectors typically include a plug assembly and a floating mechanism. The floating mechanism comprises a housing, a support, and an adhesive sleeve. The support can move axially relative to the adhesive sleeve, and the housing can rotate and move relative to the support. The front end of the housing has a locking structure that mates with the socket. The adhesive sleeve has locking teeth, and the rear end of the support has locking claws. Adjacent locking teeth form locking grooves that mate with the locking claws. The inner wall of the housing has an inner conical surface that mates with the locking claws for locking the claws, thus achieving the connector's locking and tensile strength functions.

[0005] In use, the operator first inserts the plug assembly into the corresponding socket, adjusts the position of the bracket relative to the adhesive sleeve, and then moves the outer shell. The connecting structure on the outer shell cooperates with the corresponding structure on the socket to achieve locking. As the outer shell moves forward, the inner conical surface of the outer shell presses against the locking claw on the bracket, causing it to lock in the locking groove, thus achieving tensile strength of the cable.

[0006] Disadvantages of existing technology:

[0007] 1. The existing structure can only achieve axial tilt, that is, tilt in only one direction, i.e., the direction of connector mating.

[0008] 2. The existing structure uses a step-by-step method for axial distance adjustment, with the adjustment distance being an integer multiple of the center distance between two adjacent locking grooves of the adhesive sleeve. When the adjustment distance is not an integer multiple of the center distance, during use, after the bracket moves the adjustment distance, the locking claw will not fall directly into the locking groove, but will fall into another locking groove under the thrust of the corresponding conical surface of the outer shell. This results in a certain deviation between the bracket and the standard adjustment distance, causing two problems:

[0009] (1) When the locking claw falls into the locking groove at the rear of the adhesive sleeve, the branch optical fiber at the front end of the adhesive sleeve is stretched. If the tension is too great, the optical fiber will break and the transmission signal will be interrupted.

[0010] (2) When the locking claw falls into the locking groove at the front of the adhesive sleeve, the branch optical fiber at the front end of the adhesive sleeve is squeezed. The retraction of the pin in the plug assembly will drive the branch optical fiber to move backward. In the prior art, each branch optical fiber is covered with a hollow bundle tube or armored bundle tube. Because the space of the hollow bundle tube or armored tube covered with the branch optical fiber is limited, the branch optical fiber is excessively bent inside, which will generate bending stress and cause the optical fiber to break and the transmission signal to be interrupted.

[0011] 3. Due to the disadvantages mentioned in point 2 above, this structure has strict requirements on the excess length of the optical cable branch ends, making the assembly process more difficult and resulting in a higher failure rate during product assembly and use. Summary of the Invention

[0012] To address the aforementioned technical problems, this invention provides an optical fiber connector with a self-floating inner core.

[0013] The objective of this invention is achieved through the following technical solution. According to this invention, an optical fiber connector with a self-floating inner core includes a plug assembly, an adhesive sleeve, and a support sleeve made of elastic material. One end of the support sleeve is connected to the plug assembly, and the other end is connected to the adhesive sleeve. The end of the optical cable is nested within the support sleeve, and the support sleeve has an internal cavity for the optical fiber to pass through.

[0014] Furthermore, grooves are formed on the support sleeve to provide clearance space for the support sleeve to bend radially. The grooves are axially distributed on the outer wall of the support sleeve, and the extension direction of the grooves is perpendicular to the axial direction of the support sleeve.

[0015] Furthermore, the cross-sectional shape of the support sleeve body in the radial direction is rectangular, and the groove includes support sleeve groove I and support sleeve groove II. Support sleeve groove I is disposed on the wide side of the support sleeve, and support sleeve groove II is disposed on the narrow side of the support sleeve. Support sleeve groove I and support sleeve groove II are arranged alternately in the axial direction.

[0016] Furthermore, the cross-sectional shape of the main body of the support sleeve is circular or elliptical.

[0017] Furthermore, the front end of the support sleeve is provided with a connecting protrusion extending axially, the connecting protrusion is provided with a through hole communicating with the internal cavity, and the front end of the connecting protrusion is provided with a locking block; the connecting protrusion and the locking block are nested in the cavity of the plug assembly to realize the tensile function between the support sleeve and the plug assembly.

[0018] Furthermore, the connecting protrusion at the front end of the support sleeve or the through groove at the rear end of the plug assembly is provided with a connecting groove, and the through groove at the rear end of the plug assembly or the connecting protrusion at the front end of the support sleeve is provided with a corresponding connecting key, and the connecting groove and the connecting key cooperate with each other.

[0019] Furthermore, the rear end of the support sleeve is located inside the cavity at the front end of the adhesive sleeve, and the cavity at the front end of the adhesive sleeve is filled with glue to fix the support sleeve.

[0020] Furthermore, the rear end of the support sleeve is provided with a limiting key and an axially extending reinforcing protrusion, the inner wall of the front end of the adhesive sleeve is provided with a limiting keyway that cooperates with the limiting key, the reinforcing protrusion is provided with a through hole that communicates with the internal cavity to allow the branch optical fiber to pass through, and at least one potting hole is provided on the wall of the reinforcing protrusion.

[0021] Furthermore, a bracket is slidably fitted on the outside of the plug assembly, support sleeve, and adhesive sleeve, and an outer shell is slidably fitted on the outside of the bracket. Multiple locking teeth are distributed axially on the outer wall of the adhesive sleeve, and a locking groove is formed between two adjacent locking teeth. The wall of the bracket is provided with an axially extending cantilever hole that penetrates the wall. An axially extending cantilever is provided in the cantilever hole, and a locking claw that mates with the locking groove is provided at the end of the cantilever. In the natural state, the locking claw is nested in the locking groove. A protrusion is provided on the outer wall of the cantilever, and an inner conical surface is provided on the outer shell. The inner conical surface presses against the protrusion to achieve a firm fit between the locking claw and the locking groove.

[0022] Furthermore, an axial guide key is provided on the wall of the inner cavity of the bracket, and a sliding keyway is provided on the outer wall of the adhesive sleeve to slide in cooperation with the guide key.

[0023] Compared with the prior art, the advantages of the present invention are as follows: Based on the existing connector, the present invention uses a support sleeve as a branch component between the adhesive sleeve and the plug assembly, replacing the original branch structure. While retaining the step floating structure of the adhesive sleeve, a second-level floating function is added to achieve a two-level floating function, which compensates for the first-level floating structure of the plug. At the same time, the inner plug can swing along any radial direction to achieve a floating function in multiple directions. This solves the problem that the original structure can only axially deflect in a single direction. It also solves the problems of excessively high assembly requirements and high product failure rate of the existing connector.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of Embodiment 1 of the present invention;

[0026] Figure 2 for Figure 1 An exploded view of the embodiment shown;

[0027] Figure 3 for Figure 1 A schematic diagram of the inner core component in the illustrated embodiment;

[0028] Figure 4 for Figure 3 The illustrated embodiment is a cross-sectional view after the tail sheath has been removed.

[0029] Figure 5 for Figure 1 A schematic diagram of the bracket in the illustrated embodiment;

[0030] Figure 6 for Figure 1 A schematic diagram of the outer casing in the embodiment shown;

[0031] Figure 7 for Figure 1 An exploded view of the plug assembly in the illustrated embodiment;

[0032] Figure 8 for Figure 1 A schematic diagram of the support sleeve in the illustrated embodiment;

[0033] Figure 9 for Figure 8 A diagram from another perspective;

[0034] Figure 10 for Figure 8 A sectional view;

[0035] Figure 11 for Figure 8 The front view;

[0036] Figure 12 for Figure 11 Top view;

[0037] Figure 13 This is a schematic diagram of the support sleeve in Embodiment 2 of the present invention;

[0038] Figure 14 This is a schematic diagram of the support sleeve in Embodiment 3 of the present invention;

[0039] Figure 15 This is a schematic diagram of the assembly of the support sleeve and the plug assembly in Embodiment 1 of the present invention;

[0040] Figure 16 This is a schematic diagram of the assembly of the support sleeve and the adhesive sleeve in Embodiment 1 of the present invention;

[0041] Figure 17 This is a schematic diagram of the assembly of the adhesive sleeve and the tail sleeve in Embodiment 1 of the present invention;

[0042] Figure 18 This is a cross-sectional view of the bracket in Embodiment 1 of the present invention;

[0043] Figure 19 A schematic diagram of an existing RRU device;

[0044] Figure 20 This is a schematic diagram of a multi-sheath structure in an existing connector.

[0045] [Attached image labels]

[0046] 1-Plug assembly; 101-Plug upper housing; 102-Plug lower housing; 102-Connecting groove; 103-Inner plug core; 2-Support sleeve; 201-Internal cavity; 202-Connecting key; 203-Support sleeve groove I; 204-Support sleeve groove II; 205-Glue hole; 206-Limit key; 207-Connecting protrusion; 208-Clamping block; 209-Reinforcing protrusion; 3-Adhesive sleeve; 301-Locking tooth. 302-Locking groove, 303-Sliding keyway, 304-Potting area, 305-Limiting keyway, 4-Tail sheath, 5-Optical cable, 501-Branch fiber, 6-Bracket, 601-Locking claw, 602-Cantilever hole, 603-Cantilever, 604-Protrusion, 605-Guide key, 7-Outer shell, 701-Inner conical surface, 8-RRU device, 9-Socket, 10-Optical module plug, 11-Crimping element, 12-Bundle tube. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] An embodiment of the present invention provides an optical fiber connector with a self-floating inner core, as follows: Figures 1 to 12 As shown, the connector includes an inner core component, a bracket 6, and an outer shell 7. The inner core component includes a plug assembly 1, a support sleeve 2, an adhesive sleeve 3, and a tail sheath 4. The connector connects to the optical cable 5 and is inserted into the socket of the RRU device, allowing the plug assembly 1 to connect with the optical module plug of the RRU device.

[0049] The plug assembly 1 includes an upper plug housing 101, a lower plug housing 102, and a plurality of inner plug cores 103. The tail of the inner plug core 103 is snapped into the lower plug housing 102. The upper plug housing 101 is fixed to the lower plug housing 102 by a snap-fit ​​structure cover and fixes the inner plug cores 103.

[0050] The optical cable 5 passes through the tail sheath 4 and into the adhesive sleeve 3. The optical cable 5 branches into multiple branch optical fibers 501 within the adhesive sleeve 3. The branch optical fibers 501 pass through the adhesive sleeve 3 and the support sleeve 2 in sequence and then connect to the corresponding inner core plug 103. The direction of extension of the optical cable 5 is taken as the axial direction, the direction perpendicular to the axial direction is taken as the radial direction, and the plug assembly 1 is taken as the front end.

[0051] The support sleeve 2 has a rectangular cross-sectional shape in the radial direction. An internal cavity 201 for the branch optical fiber 501 to pass through is provided along the axial direction of the support sleeve 2. Grooves are provided on the outer wall of the support sleeve 2, including support sleeve groove I 203 and support sleeve groove II 204. Support sleeve groove I 203 is located on the wide side of the support sleeve 2, and support sleeve groove II 204 is located on the narrow side of the support sleeve 2. The extending directions of both support sleeve groove I 203 and support sleeve groove II 204 are perpendicular to each other in the axial direction. The support sleeve grooves I 203 and support sleeve groove II 204 are staggered in the axial direction, allowing for a slight sway of the inner core component when the support sleeve 2 is stretched, compressed, or bent.

[0052] The support sleeve 2, as an independent component, can have its shape and size determined according to the specific application scenario and the number and length of the branch optical fibers it accommodates. For example, in Embodiment 1, the radial cross-sectional shape of the support sleeve 2 body is rectangular, while in Embodiment 2, the radial cross-sectional shape of the support sleeve 2 body is circular. Figure 13 As shown, in other embodiments, the radial cross-sectional shape of the support sleeve 2 body can be elliptical or other shapes. Multiple sets of grooves are circumferentially distributed on the support sleeve 2, with the grooves in each set axially aligned and staggered on the support sleeve 2.

[0053] The staggered grooves on the support sleeve 2 can be through grooves or non-through grooves. Through grooves communicate with the internal cavity 201 of the support sleeve 2, while non-through grooves do not communicate with the internal cavity 201 of the support sleeve 2. In this first embodiment, the grooves on the support sleeve 2 are non-through grooves; in this third embodiment, the grooves on the support sleeve 2 are through grooves. Figure 14 As shown, the extension direction of the groove is determined according to the bending direction required by the connector. Since multiple groove groups are distributed circumferentially on the support sleeve 2, the support sleeve 2 can be bent in any direction, and the groove provides clearance space for the connector to bend.

[0054] The support sleeve 2 is made of flexible materials such as rubber, which can be stretched or compressed under external force, thus realizing the functions of stretching and compression. At the same time, the inside of the support sleeve 2 is a hollow structure, and the diameter of its internal cavity is larger than the outer diameter of all the branch optical fibers contained therein, which can accommodate multiple branch optical fibers of multi-core optical cable to stretch or bend freely inside.

[0055] The front end of the support sleeve 2 is provided with a connecting protrusion 207 that mates with the plug assembly 1 and extends axially. The connecting protrusion 207 has a through hole communicating with the internal cavity 201 for the branch optical fiber 501 to pass through. A locking block 208 is provided at the front end of the connecting protrusion 207. A connecting key 202 is circumferentially provided on the outer wall of the connecting protrusion 207. The tail end of the plug lower housing 102 has a through groove for the branch optical fiber 501 to pass through. The through groove of the plug lower housing 102 matches the connecting protrusion 207, and the inner wall of the through groove has a connecting groove 10201 that matches the connecting key 202. The connecting protrusion 207 is nested in the through groove of the plug lower housing 102, and the locking block 208 is locked in the cavity of the plug lower housing 102. Then, the plug upper housing 101 is covered and fixed on the plug lower housing 102, so that the locking block 208 is limited within the cavity of the plug lower housing 102, achieving the tensile function between the support sleeve 2 and the plug assembly 1. As the locking block 208 engages with the cavity of the lower housing 102 of the plug, the connecting key 202 is nested within the connecting groove 10201. After the upper housing 101 of the plug is secured, the tensile strength of the support sleeve 2 and the plug assembly 1 is further enhanced. Figure 15 As shown. In other embodiments of the present invention, the shape of the connecting protrusion 207 is determined according to the corresponding structure of the compatible plug assembly. If a connecting key is provided on the lower housing 102 of the plug, a connecting groove matching the connecting key can be provided on the connecting protrusion 207 to ensure a reliable connection between the plug assembly 1 and the support sleeve 2.

[0056] The rear end of the support sleeve 2 is provided with a limiting key 206 and a reinforcing protrusion 209 that cooperate with the adhesive sleeve 3. Two limiting keys 206 are provided on the outer wall of the rear end of the support sleeve 2. These two limiting keys 206 extend radially and are symmetrically arranged. The inner wall of the inner cavity of the front end of the adhesive sleeve 3 is provided with a limiting keyway 305 that matches the limiting keys 206, so as to realize mechanical limiting and anti-rotation functions. The reinforcing protrusion 209 extends axially and is provided with a through hole that extends axially and communicates with the internal cavity to allow the branch optical fiber to pass through. At least one potting hole 205 is provided through the wall of the reinforcing protrusion 209. When potting glue is applied to the potting area 304 of the inner cavity of the front end of the adhesive sleeve 3, the glue can flow through the potting hole 205 and play a tensile role after curing. Insert the rear end of the support sleeve 2 into the cavity at the front end of the adhesive sleeve 3, so that the limiting key 206 is nested in the limiting keyway 305. Then, inject adhesive into the adhesive sleeve 3 to fix the support sleeve 2 and the adhesive sleeve 3. Figure 16 As shown.

[0057] The front end of the tail sleeve 4 is inserted into the cavity at the rear end of the adhesive sleeve 3, and the two are fixed by a locking mechanism. Figure 17 As shown.

[0058] The bracket 6 is fitted onto the outside of the inner core component, and the outer shell 7 is fitted onto the outside of both the bracket 6 and the inner core component. The outer shell 7 can rotate relative to the bracket 6 and move axially back and forth relative to the bracket 6 during rotation. The outer wall of the front end of the bracket 6 is provided with a sealing ring for sealing with the socket and a structure that mates with the socket and the outer shell 7. The front end of the outer shell 7 is provided with a locking structure that mates with the socket, and the outer shell 7 locks with the socket when it moves forward.

[0059] The bracket 6 is a rotating body with an axially penetrating cavity inside. An axially oriented guide key 605 is provided on the wall of the inner cavity of the bracket 6. The outer wall of the adhesive sleeve 3 has a sliding keyway 303 that mates with the guide key. Each guide key corresponds to one sliding keyway 303. The bracket 6 can move axially, with the guide key sliding within the sliding keyway 303. An axially extending cantilever hole 602 is provided on the wall of the bracket 6, containing an axially extending cantilever 603. A locking claw 601 is provided at the end of each cantilever 603, extending towards the inner cavity of the bracket 6. A locking tooth assembly is provided on the outer wall of the adhesive sleeve 3, extending above the outer wall. A sliding keyway 303 is formed between two locking tooth assemblies. Each locking tooth assembly corresponds to one locking claw 601. The locking tooth assembly includes multiple axially distributed locking teeth 301, with a locking groove 302 forming between adjacent locking teeth 301 that mates with the locking claw 601. When multiple guide keys 605 and cantilever 603 are provided, the guide keys 605 and cantilever 603 are distributed circumferentially on the wall of the bracket 6, and correspondingly, the locking tooth group and sliding keyway 303 are distributed circumferentially on the wall of the adhesive sleeve 3.

[0060] An inner conical surface 701 is provided on the outer shell 7, facing forward, for locking the locking claw 601. A protrusion 604 is provided on the outer wall of the cantilever 603 opposite to the locking claw 601. When the outer shell 7 moves forward, the inner conical surface 701 presses against the protrusion 604, realizing a firm fit between the locking claw 601 and the locking groove 302, thereby realizing the locking and tensile functions of the connector.

[0061] In use, the operator first inserts the plug assembly 1 into the corresponding socket 9 and connects it to the optical module plug 10. The position of the bracket 6 relative to the adhesive sleeve 3 is adjusted so that the front end of the bracket 6 is inserted into the socket 9 and the locking claw 601 is engaged in the corresponding locking groove 302. If the adjustment distance of the bracket 6 is an integer multiple of the center distance of the locking groove, and the relative position of the optical module plug 10 and the socket 9 matches the relative position of the plug assembly 1 and the bracket 6, the support sleeve 2 will not be stretched, compressed, or bent after the locking claw 601 is engaged in the locking groove 302. If the adjustment distance of the bracket 6 is not an integer multiple of the center distance of the locking groove, the support sleeve 2 will be compressed when the locking claw 601 is engaged in the front locking groove 302, and stretched when the locking claw 601 is engaged in the rear locking groove 302. The support sleeve 2 is stretched or compressed to adapt to the adjustment distance, ensuring accurate engagement between the plug assembly 1 and the optical module plug. When the relative positions of the optical module plug 10 and the socket 9 do not match the relative positions of the plug assembly 1 and the bracket 6, the locking claw 601 engages in the corresponding locking groove 302, causing the support sleeve 2 to bend and ensuring accurate insertion of the plug assembly 1 and the optical module plug. After the locking claw 601 engages in the corresponding locking groove 302, the outer shell 7 is rotated, causing it to move forward. The connecting structure on the outer shell 7 engages with the corresponding structure on the socket to achieve locking. During the forward movement of the outer shell 7, the inner conical surface 701 of the outer shell 7 presses against the locking claw 601 on the bracket 6, causing it to engage in the corresponding groove of the adhesive sleeve 3, thus achieving tensile strength of the optical cable.

[0062] The relative rotational movement structure between the outer casing 7 and the bracket 6, as well as the locking structure with the socket, are both existing technologies. For example, in the rotational movement structure, the outer wall of the bracket 6 is provided with... Figure 4 The wavy protrusions shown are accompanied by protrusions on the inner wall of the outer casing 7. When the outer casing 7 rotates, the protrusions slide on the wavy protrusions, causing the outer casing 7 to move back and forth. In the locking structure, the outer casing 7 can be fixed to the socket by a threaded connection. Other structures can also be used for the rotation and locking structures, which will not be described in detail here.

[0063] The fine-tuning function of the support sleeve 2 can modify the existing structure. The stretching / compression / bending function of the support sleeve 2, combined with the step-by-step floating function of the adhesive sleeve 3, forms a two-stage floating structure combining fine-tuning and coarse-tuning. The locking claws, locking teeth, and locking groove constitute the first-stage floating structure. When the first-stage floating structure cannot meet the floating distance or angle requirements, the compression / stretching / bending function of the adhesive sleeve 3 can compensate for the first-stage floating structure. The two-stage floating structure of this invention can also be applied to other connectors that require axial displacement adjustment. The fine-tuning function of the support sleeve 2 can ensure reliable connection of the connector plug without affecting transmission performance.

[0064] During the assembly process of this connector, the support sleeve 2 is used as a single part, replacing the existing technology such as... Figure 20The multi-sheath structure shown has a hollow interior for the support sleeve 2, which increases the retraction space for the branch optical fiber of the optical cable 5. When the support sleeve is compressed / stretched / bent, the branch optical fiber 501 can move freely inside the support sleeve 2. This simplifies the fixing method of the branch optical fiber 501 and the connector, reduces the number of assembly parts, simplifies the operation process, and improves production efficiency. On the other hand, the excess length of the optical cable from the front end of the plug assembly 1 to the front end of the adhesive sleeve 3 is increased, further reducing the assembly difficulty.

[0065] When a connection failure occurs during the use of this connector, maintenance and inspection can be carried out by simply removing the outer shell 7 of the connector, moving the outer shell 7 to the rear end, and moving the bracket 6 to the rear end, so that the condition of the support sleeve 2 and the inner core components can be checked, making the connector more maintainable than the existing structure.

[0066] In summary, this invention, based on existing connectors, uses a support sleeve 2 as a branch component between the adhesive sleeve 3 and the plug assembly 1, replacing the original branch structure. While retaining the step-floating structure of the adhesive sleeve 3, it adds a second-level floating function to achieve a two-level floating function, compensating for the first-level floating structure of the plug. At the same time, the inner plug can swing along any radial direction, achieving a floating function in multiple directions. This solves the problem that the original structure can only axially deflect in a single direction. It also solves the problems of excessively high assembly requirements and high product failure rate of existing connectors, and improves the maintainability of the connector.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber optic connector with a self-floating inner core, comprising a plug assembly (1) and an adhesive sleeve (3), characterized in that: It also includes a support sleeve (2) made of elastic material, one end of which is connected to the plug assembly (1) and the other end is connected to the adhesive sleeve (3); the end of the optical cable (5) is nested in the support sleeve (2), and the support sleeve (2) is provided with an internal cavity (201) for the optical fiber to pass through; a bracket (6) is slidably fitted on the outside of the plug assembly (1), the support sleeve (2), and the adhesive sleeve (3), and an outer shell (7) is slidably fitted on the outside of the bracket (6); a locking tooth group is distributed circumferentially on the outer wall of the adhesive sleeve (3), and an axially extending sliding keyway (303) is formed between adjacent locking tooth groups. The locking tooth group includes multiple locking teeth (301) distributed axially, and a locking groove (302) is formed between adjacent locking teeth (301); a locking claw (601) is distributed circumferentially on the bracket (6) corresponding to the locking tooth group and used to be nested in the locking groove (302), and a locking claw (601) is provided on the bracket (6) that extends axially and is slidably set in the sliding keyway. The guide key (605) is in the keyway (303); after the locking claw (601) is nested in the locking groove (302), the outer shell (7) slides and squeezes the locking claw (601) to keep the locking claw (601) locked in the locking groove (302); the front end of the support sleeve (2) is provided with a connecting protrusion (207) extending axially, the connecting protrusion (207) is provided with a through hole communicating with the internal cavity (201), and the front end of the connecting protrusion (207) is provided with a locking block (208); the connecting protrusion (207) and the locking block (208) are nested in the cavity of the plug assembly to realize the tensile function between the support sleeve (2) and the plug assembly; the through groove at the front end of the support sleeve (2) or the rear end of the plug assembly (1) is provided with a connecting groove, and the through groove at the rear end of the plug assembly (1) or the front end of the support sleeve (2) is provided with a connecting key, and the connecting groove and the connecting key cooperate with each other.

2. The fiber optic connector with a self-floating inner core according to claim 1, characterized in that: The support sleeve (2) has grooves to provide space for the support sleeve (2) to bend in the radial direction. The grooves are axially distributed on the outer wall of the support sleeve (2), and the extension direction of the grooves is perpendicular to the axis of the support sleeve (2).

3. The fiber optic connector with a self-floating inner core according to claim 2, characterized in that: The main body of the support sleeve (2) has a rectangular cross-sectional shape in the radial direction. The groove includes support sleeve groove I (203) and support sleeve groove II (204). Support sleeve groove I (203) is located on the wide side of the support sleeve (2), and support sleeve groove II (204) is located on the narrow side of the support sleeve (2). Support sleeve groove I (203) and support sleeve groove II (204) are arranged alternately in the axial direction.

4. The fiber optic connector with a self-floating inner core according to claim 2, characterized in that: The main cross-section of the support sleeve (2) is circular.

5. The fiber optic connector with a self-floating inner core according to claim 1, characterized in that: The rear end of the support sleeve (2) is located in the cavity of the front end of the adhesive sleeve (3), and the cavity of the front end of the adhesive sleeve (3) is filled with glue to fix the support sleeve (2).

6. The fiber optic connector with a self-floating inner core according to claim 5, characterized in that: The rear end of the support sleeve (2) is provided with a limiting key (206) and an axially extending reinforcing protrusion (209). The inner wall of the front end of the adhesive sleeve (3) is provided with a limiting keyway (305) that cooperates with the limiting key (206). The reinforcing protrusion (209) is provided with a through hole that communicates with the internal cavity (201) for the branch optical fiber to pass through. At least one potting hole (205) is provided on the wall of the reinforcing protrusion (209).

7. The fiber optic connector with a self-floating inner core according to claim 1, characterized in that: The support (6) has an axially extending cantilever hole (602) that penetrates the wall. An axially extending cantilever (603) is provided in the cantilever hole (602). A locking claw (601) is provided at the end of the cantilever (603). A protrusion (604) is provided on the outer wall of the cantilever (603). An inner conical surface (701) is provided on the outer shell (7). During the sliding process of the outer shell (7), the inner conical surface (701) can squeeze the protrusion (604) to achieve a firm fit between the locking claw (601) and the locking groove (302).

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