A reversible lc connector

Abstract

The application relates to the technical field of connectors, in particular to a polarity-changeable LC connector which comprises an adapter body, two adapter interfaces and two mating pieces arranged on the adapter body, a connector body, two optical fiber plugs arranged on the connector body, and a polarity conversion module which comprises a conversion sleeve, an elastic reset piece, two movable buckles and two unlocking keys, the conversion sleeve is installed on the connector body, the elastic reset piece is installed on the conversion sleeve, the conversion sleeve is provided with a mating sleeve for the mating piece to be inserted, the movable buckle is movably connected to the mating sleeve, and the unlocking key is movably connected to the conversion sleeve to limit or release the movable buckle. The polarity-changeable LC connector can reduce operation complexity, avoid the problem that the connector body and the adapter body are disconnected due to external impact or misoperation of non-professionals, and improve the safety of the LC connector.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a swivel-polarity LC connector. Background Technology

[0002] LC connectors are a type of fiber optic connector. Because their size is only half that of SC / ST / FC connectors, they belong to the Small Fiber Optic (SFF) connector category. Due to the high-density cabling environments typically found in data centers, LC connectors are widely used in structured cabling systems and other projects. Most modern fiber optic systems use a pair of fibers for transmission: one for forward signal transmission and the other for reverse transmission. Currently, most fiber optic connectors are designed as separate units. When polarity switching is required, the fiber optic connector must be removed from the adapter, and tools must be used for disassembly, assembly, and polarity switching, which is cumbersome. Furthermore, the connection between the fiber optic connector and the adapter relies on a conventional snap-fit ​​structure, which facilitates quick locking and unlocking to some extent. For example, Chinese Utility Model Patent CN213457450U discloses a novel fiber optic connector structure. The system includes a fiber optic connector and a fiber optic adapter. The fiber optic connector includes a main sleeve assembly, an unlocking assembly, a first fiber optic plug, and a second fiber optic plug. The main sleeve assembly includes a first housing and a second housing. Positioning components are provided on the outer surfaces of both the first and second housings. The unlocking assembly includes a fixing plate, an elastic part, an unlocking handle, and an unlocking key. The fixing plate is coupled to the positioning component of the first or second housing. The fiber optic adapter is provided with a socket for accommodating the fiber optic connector. A foolproof part that cooperates with a foolproof component is provided inside the socket.

[0003] However, conventional snap-fit ​​structures have poor impact resistance and are prone to loosening due to external impacts. Furthermore, non-professionals can also disassemble and assemble fiber optic connectors and adapters, which can easily lead to loose connections and pose safety hazards. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned technologies and provide a LC connector with interchangeable polarity, which reduces the complexity of operation, avoids the problem of loose connection between the connector body and the adapter body due to external impact or misoperation by non-professionals, and improves the safety of the LC connector.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a polarity-reversible LC connector, comprising: The adapter body has two centrally symmetrically arranged adapter interfaces and two centrally symmetrically arranged docking parts, and the outer side wall of the docking parts has a first snap-fit ​​groove. The connector body has two optical fiber plugs arranged symmetrically in a central position, and each optical fiber plug is respectively inserted and mated with each of the adapter interfaces. A polarity conversion module includes a conversion sleeve, a resilient reset element, two movable latches, and two unlocking buttons. The conversion sleeve is mounted on the connector body, the resilient reset element is mounted on the conversion sleeve, the conversion sleeve is provided with a mating sleeve for the mating member to insert into, the movable latches are movably connected to the mating sleeve, the resilient reset element acts on the movable latches to make them tend to engage with the first latch groove, and the unlocking buttons are movably connected to the conversion sleeve to limit or release the movable latches.

[0006] Preferably, the two ends of the movable buckle are a buckling end and a pressing end, respectively. The buckling end of the movable buckle engages with the first buckling groove of the docking member, and the buckling end of the movable buckle forms a guide surface that is inclined toward the docking member.

[0007] Preferably, the docking sleeve and the conversion sleeve are integrally formed, the outer side wall of the docking sleeve is provided with a movable groove, the movable buckle is pivotally connected in the movable groove, the elastic reset member includes two elastic parts arranged symmetrically, the elastic parts extend into the docking sleeve, and a part of the elastic parts abuts against the conversion sleeve, and the other part of the elastic parts abuts against the pressing end of the movable buckle.

[0008] Preferably, the conversion sleeve is provided with a guide strip, and the unlocking key is provided with a guide groove that slides and cooperates with the guide strip.

[0009] Preferably, a limiting member is provided at one end of the unlocking button near the docking sleeve, and the limiting member abuts against the inner sidewall of the pressing end of the movable buckle.

[0010] Preferably, the outer wall of the guide strip is provided with a track groove extending along the sliding direction of the unlocking key, and both sides of the inner wall of the track groove are provided with positioning recesses. The inner wall of the guide groove includes a positioning member that can be deformed by pressure, and the positioning member is provided with a positioning protrusion, which is in concave-convex fit with the positioning recess.

[0011] Preferably, the end face of the mating sleeve is provided with two mating pins arranged symmetrically in a central manner, and the adapter body is provided with a mating slot for the mating pins to be inserted.

[0012] Preferably, the adapter sleeve is provided with a through-hole for inserting the fiber optic plug, and the inner wall of the through-hole is adapted to the outer wall of the fiber optic plug.

[0013] Preferably, two elastic pressure strips are symmetrically arranged on the connector body, and the elastic pressure strips are provided with locking protrusions. The inner wall of the socket is provided with a second locking groove for the locking protrusions to be locked and connected.

[0014] Preferably, the connector body is provided with a pressure plate structure, and both elastic pressure strips are formed on the pressure plate structure. A gap is reserved between the pressure plate structure and the connector body for it to be deformed under pressure. The pressure plate structure is provided with an abutment plate corresponding to the connector body, and the abutment plate abuts against the connector body.

[0015] Compared with the prior art, the beneficial effects of the present invention are: After the connector body is assembled with the adapter body via the polarity conversion module, the fiber optic plug and adapter interface are inserted. When the LC connector needs to switch polarities, the operator needs to operate the unlock button to release the movable latch. Pressure is then applied to the movable latch to disengage the corresponding part from the first latch slot, thereby releasing the lock between the connector body and the adapter body. This allows the connector body, along with the polarity conversion module, to be disassembled from the adapter body, rotated 180°, and reassembled to complete the polarity conversion operation. During this process, the operator does not need to use tools to disassemble the LC connector; the polarity conversion operation can be completed manually, reducing operational complexity. The movable latch, with the help of an elastic reset component and the first latch slot, achieves primary locking, making the connection between the connector body and the adapter body more reliable. The unlock button limits the movable latch to achieve secondary locking, preventing the connection between the connector body and the adapter body from becoming loose due to external impact or misoperation by non-professionals, thus improving the safety of the LC connector. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the LC connector in the embodiment; Figure 2 This is a schematic diagram of the LC connector structure when the unlock button is in the first position in the embodiment; Figure 3 yes Figure 2 Sectional view of line AA in the middle; Figure 4 This is a schematic diagram of the LC connector structure when the unlock button is in the second position in the embodiment; Figure 5 yes Figure 4 Sectional view of the middle BB line; Figure 6 yes Figure 5 A cross-sectional view of the CC line; Figure 7 This is a schematic diagram of the adapter body in the embodiment; Figure 8 This is a schematic diagram of the connector body in the embodiment; Figure 9 This is a schematic diagram of the polarity conversion module in the embodiment; Figure 10 This is an exploded view of the polarity conversion module in the embodiment.

[0017] In the diagram: 1. Adapter body; 101. Adapter interface; 102. Connecting part; 103. First snap-fit ​​groove; 104. Connecting slot; 2. Connector body; 201. Locking spring; 202. Locking part; 203. Through hole; 204. Fiber optic plug; 205. Pressure plate structure; 206. Elastic pressure strip; 207. Abutment plate; 208. Locking protrusion; 3. Polarity conversion module; 31. Adapter sleeve; 301. Socket; 30 2. Second snap-fit ​​groove; 303. Connecting sleeve; 304. Movable groove; 305. Connecting post; 32. Elastic reset component; 306. Elastic part; 33. Movable snap-fit; 307. Snap-fit ​​end; 308. Pressing end; 309. Guide surface; 34. Unlock button; 310. Guide groove; 311. Positioning component; 312. Positioning protrusion; 313. Limiting component; 314. Guide strip; 315. Track groove; 316. Positioning recess. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0019] refer to Figure 1 , Figure 7 A polarity-reversible LC connector includes an adapter body 1, a connector body 2, and a polarity conversion module 3. The adapter body 1 is provided with two centrally symmetrically arranged adapter interfaces 101 and two centrally symmetrically arranged mating parts 102. The mating parts 102 are located beside the adapter interfaces 101, and a first snap-fit ​​groove 103 is provided on the outer side wall of the mating parts 102.

[0020] refer to Figure 1 , Figure 4 , Figure 5 , Figure 6The connector body 2 is provided with two fiber optic plugs 204 arranged symmetrically at the center. Each fiber optic plug 204 is inserted and mated with a corresponding adapter interface 101. The connector body 2 is provided with a pressure plate structure 205, which is integrally formed with the connector body 2. A gap is reserved between the pressure plate structure 205 and the connector body 2 for it to be deformed under pressure. Two elastic pressure strips 206 are formed on the pressure plate structure 205. The elastic pressure strips 206 are strip-shaped and their ends are connected to the connector body 2. A stop plate 207 is provided on the pressure plate structure 205 corresponding to the connector body 2. The stop plate 207 abuts against the connector body 2. A space is reserved between the pressure plate structure 205 and its two elastic pressure strips 206 and the connector body 2 so that the user can apply pressure to the pressure plate structure 205 to deform it. Preferably, the abutment plate 207 is provided with a forked locking spring 201, the connector body 2 is provided with a through hole 203, the locking spring 201 can be deformed by pressure to be smoothly inserted into the through hole 203, and the end of the locking spring 201 is provided with a locking part 202, which abuts against the connector body 2, thereby maintaining the state of the pressure plate structure 205 and its two elastic pressure strips 206.

[0021] refer to Figures 1 to 10 The polarity conversion module 3 includes a conversion sleeve 31, an elastic reset component 32, two movable latches 33, and two unlocking keys 34. The conversion sleeve 31 is installed on the connector body 2. The conversion sleeve 31 has a through-hole 301 for inserting the fiber optic plug 204. The inner wall of the through-hole 301 is adapted to the outer wall of the fiber optic plug 204. The elastic pressure strip 206 is provided with a locking protrusion 208. The inner wall of the through-hole 301 is provided with a second locking groove 302 for the locking protrusion 208 to lock and connect, ensuring a reliable connection between the conversion sleeve 31 and the connector body 2, and also facilitating the disassembly and assembly of the polarity conversion module 3 and the connector body 2.

[0022] The conversion sleeve 31 is provided with a docking sleeve 303 for the docking member 102 to be inserted into. The docking sleeve 303 is integrally formed with the conversion sleeve 31. A movable groove 304 is provided through the outer side wall of the docking sleeve 303. The movable buckle 33 is pivotally connected in the movable groove 304 so that the movable buckle 33 is movably connected to the docking sleeve 303. The two ends of the movable buckle 33 are a buckling end 307 and a pressing end 308, respectively. The buckling end 307 of the movable buckle 33 engages with the first buckling groove 103 of the docking member 102. The buckling end 307 of the movable buckle 33 forms a guide surface 309 that is inclined towards the docking member 102. The elastic reset member 32 is a U-shaped elastic sheet structure. The elastic reset member 32 includes two symmetrically arranged elastic parts 306. The elastic parts 306 are spring sheet structures. The elastic reset member 32 is installed on the conversion sleeve 31. The two elastic parts 306 extend into the two mating sleeves 303 respectively. The two elastic parts 306 are located in the two movable grooves 304 respectively. A part of the elastic part 306 abuts against the conversion sleeve 31, and the other part of the elastic part 306 abuts against the pressing end 308 of the movable buckle 33. The elastic reset member 32 acts on the movable buckle 33 to make it tend to cooperate with the first buckle groove 103.

[0023] The conversion sleeve 31 is provided with a guide bar 314, and the unlocking key 34 is provided with a guide groove 310 that slides and cooperates with the guide bar 314, so that the unlocking key 34 is movably connected to the conversion sleeve 31, and the unlocking key 34 slides along the guide groove 310 to approach or move away from the docking sleeve 303. The outer wall of the guide bar 314 is provided with a track groove 315 extending along the sliding direction of the unlock key 34. The inner wall of the track groove 315 is provided with positioning recesses 316 on both sides. The inner wall of the guide groove 310 includes a positioning member 311 that can be deformed by pressure. A slot is provided between the positioning member 311 and the unlock key 34 to reserve space for the positioning member 311 to be deformed by pressure. The positioning member 311 is provided with a positioning protrusion 312. The positioning protrusion 312 and the positioning recess 316 are in a convex-concave fit, so that the unlock key 34 has a first position and a second position relative to the guide bar 314. By pushing the unlock key 34, it is moved to the first position or the second position to limit or release the movable buckle 33.

[0024] When the unlock button 34 is in the first position, the positioning recess 316 near the docking sleeve 303 engages with the positioning protrusion 312 of the positioning member 311, thereby positioning the unlock button 34 to engage with the docking sleeve 303. A limiting member 313 is provided at one end of the unlock button 34 near the docking sleeve 303. The limiting member 313 abuts against the inner wall of the pressing end 308 of the movable buckle 33, limiting the pressing end 308 of the movable buckle 33 to prevent the buckle end 307 of the movable buckle 33 from disengaging from the first buckle groove 103 due to external pressure. Preferably, the operating end of the movable buckle 33 extends to the outside of the movable groove 304, and the end of the unlock button 34 near the docking sleeve 303 is adapted to the operating end of the movable buckle 33.

[0025] When the unlock button 34 is in the second position, the positioning recess 316 away from the mating sleeve 303 and the positioning protrusion 312 of the positioning member 311 engage in a convex-concave fit, thereby positioning the unlock button 34 to keep it away from the mating sleeve 303. The limiting member 313 completely disengages from the movable latch 33. At this time, the operator can press the pressing end 308 of the movable latch 33 to make it rotate against the elastic part 306, thereby driving the latching end 307 of the movable latch 33 to disengage from the first latching groove 103 and release the position lock of the connector body 2.

[0026] After the connector body 2 is assembled with the adapter body 1 via the polarity conversion module 3, the fiber optic plug 204 is inserted into the adapter interface 101. When the LC connector needs to switch polarities, the operator needs to operate the unlocking key 34 to release the movable latch 33. Pressure can then be applied to the movable latch 33 to disengage the corresponding part from the first latch slot 103, thereby releasing the lock between the connector body 2 and the adapter body 1. This allows the connector body 2, along with the polarity conversion module 3, to be separated from the adapter body 1. The two adapter interfaces 101 are arranged symmetrically on the adapter body 1, and the two fiber optic plugs 204 are arranged symmetrically on the connector body 2. After the connector body 2 and the polarity conversion module 3 are rotated 180°, each adapter interface 101 and each fiber optic plug 204 can still be aligned for reassembly, completing the polarity conversion operation. During this process, the operator does not need to use tools to disassemble the LC connector; the polarity conversion can be completed manually, reducing operational complexity. The movable latch 33, with the help of the elastic reset member 32 and the first latch groove 103, achieves a primary locking, ensuring a reliable connection between the connector body 2 and the adapter body 1. The unlocking key 34 limits the movable latch 33 to achieve a secondary locking, requiring the operator to adjust the position of the unlocking key 34 before pressing the movable latch 33 to release its limitation. The operator unlocks the connector body 2 and the adapter body 1 by pressing the movable latch 33, avoiding the problem of the connector body 2 and the adapter body 1 becoming loose due to external impact or misoperation by non-professionals, thus improving the safety of the LC connector.

[0027] refer to Figure 7 , Figure 9 , Figure 10 The end face of the mating sleeve 303 is provided with two mating pins 305 arranged symmetrically in the center. The adapter body 1 is provided with a mating slot 104 for the mating pins 305 to be inserted into, which guides the mating operation between the conversion sleeve 31 and the adapter body 1. By using the mating slot 104 and the mating pins 305 to be inserted into each other, the insertion stroke of the mating part 102 and the mating sleeve 303 can also be limited. When the mating part 102 and the mating sleeve 303 are inserted into place, the latching end 307 of the movable latch 33 corresponds to the first latching groove 103. Under the action of the elastic part 306, the movable latch 33 can realize the self-locking function after the LC connector is mated.

[0028] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A polarity-reversible LC connector, characterized in that, include: The adapter body (1) is provided with two centrally symmetrically arranged adapter interfaces (101) and two centrally symmetrically arranged docking parts (102), and the outer side wall of the docking parts (102) is provided with a first snap-fit ​​groove (103); the connector body (2) is provided with two centrally symmetrically arranged fiber optic plugs (204), and each fiber optic plug (204) is respectively inserted and engaged with each of the adapter interfaces (101); the polarity conversion module (3) includes a conversion sleeve (31), an elastic reset part (32), and two movable clips. The adapter sleeve (31) is mounted on the connector body (2), and the elastic reset member (32) is mounted on the adapter sleeve (31). The adapter sleeve (31) is provided with a docking sleeve (303) for the docking member (102) to be inserted into. The movable buckle (33) is movably connected to the docking sleeve (303). The elastic reset member (32) acts on the movable buckle (33) to make it tend to cooperate with the first buckle groove (103). The unlocking key (34) is movably connected to the adapter sleeve (31) to limit or release the movable buckle (33).

2. The LC connector with interchangeable polarity according to claim 1, characterized in that, The two ends of the movable buckle (33) are a buckle end (307) and a pressing end (308), respectively. The buckle end (307) of the movable buckle (33) engages with the first buckle groove (103) of the docking member (102). The buckle end (307) of the movable buckle (33) has a guide surface (309) that is inclined toward the docking member (102).

3. A switchable polarity LC connector according to claim 2, characterized in that, The docking sleeve (303) and the conversion sleeve (31) are integrally formed. The outer side wall of the docking sleeve (303) is provided with a movable groove (304). The movable buckle (33) is pivotally connected to the movable groove (304). The elastic reset member (32) includes two symmetrically arranged elastic parts (306). The elastic parts (306) extend into the docking sleeve (303), and a part of the elastic parts (306) abuts against the conversion sleeve (31). The other part of the elastic parts (306) abuts against the pressing end (308) of the movable buckle (33).

4. A switchable polarity LC connector according to claim 2, characterized in that, The conversion sleeve (31) is provided with a guide bar (314), and the unlocking key (34) is provided with a guide groove (310) that slides and cooperates with the guide bar (314).

5. A switchable polarity LC connector according to claim 4, characterized in that, The unlocking key (34) is provided with a limiting member (313) at one end near the docking sleeve (303), and the limiting member (313) abuts against the inner wall of the pressing end (308) of the movable buckle (33).

6. A switchable polarity LC connector according to claim 4, characterized in that, The outer wall of the guide strip (314) is provided with a track groove (315) extending along the sliding direction of the unlock key (34). The inner walls of the track groove (315) are provided with positioning recesses (316) on both sides. The inner wall of the guide groove (310) includes a positioning member (311) that can be deformed by pressure. The positioning member (311) is provided with a positioning protrusion (312), and the positioning protrusion (312) and the positioning recess (316) are in concave-convex cooperation.

7. A polarity-reversible LC connector according to claim 1, characterized in that, The end face of the docking sleeve (303) is provided with two docking pins (305) arranged in a centrally symmetrical manner, and the adapter body (1) is provided with a docking slot (104) for the docking pins (305) to be inserted.

8. A polarity-reversible LC connector according to claim 1, characterized in that, The adapter sleeve (31) is provided with a socket (301) for inserting the fiber optic plug (204), and the inner wall of the socket (301) is adapted to the outer wall of the fiber optic plug (204).

9. A polarity-reversible LC connector according to claim 8, characterized in that, Two elastic pressure strips (206) are symmetrically arranged on the connector body (2). The elastic pressure strips (206) are provided with locking protrusions (208). The inner wall of the socket (301) is provided with a second locking groove (302) for the locking protrusions (208) to be locked and connected.

10. A polarity-reversible LC connector according to claim 9, characterized in that, The connector body (2) is provided with a pressure plate structure (205), and two elastic pressure strips (206) are formed on the pressure plate structure (205). A gap is reserved between the pressure plate structure (205) and the connector body (2) for it to be deformed under pressure. The pressure plate structure (205) is provided with an abutment plate (207) corresponding to the connector body (2), and the abutment plate (207) abuts against the connector body (2).

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