NFC (Near Field Communication) passive intelligent lock for optical fiber junction box of machine room
By adopting NFC passive intelligent lock technology in the fiber optic cable box and combining the lever lifting principle, the problem of easy misinterpretation of fiber FC-FC couplers is solved, intelligent and high-security lock control management is realized, and the safety and management efficiency of fiber optic equipment is improved.
Patent Information
- Application Number
- CN202510606552.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2025-07-22
AI Technical Summary
Existing fiber FC-FC couplers lack effective anti-missing mechanisms, and operators may cause the coupler to be disconnected due to negligence or misoperation, affecting communication stability, and traditional physical locks cannot meet the needs of high security and intelligent management.
Using NFC passive intelligent lock technology, through the combination of NFC antenna, NFC control module, one-way stop-rotation ratchet teeth and limit lock tongue, the mobile phone NFC function is used to achieve authorized unlocking and lock control management, and combined with the lever lifting principle, it prevents the optical fiber FC-FC coupler from being accidentally interrupted.
It realizes intelligent and high-security lock control management of fiber optic equipment, prevents misinterpretations, improves the security and management efficiency of fiber optic equipment, and meets the high security and intelligence needs of fiber optic communication systems.
Smart Images
Figure CN120352995A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of optical fiber communication, and particularly relates to an NFC passive intelligent lock for a fiber optic cable distribution box in a machine room. Background Art
[0002] Optical fiber communication, as an important part of modern communication technology, is widely used in fields such as data centers, communication networks, and industrial control. An optical fiber FC-FC coupler is a key component in an optical fiber communication system for connecting optical fiber devices. However, existing optical fiber FC-FC couplers lack an effective anti-accidental disconnection mechanism, and operators may cause the coupler to disconnect due to negligence or incorrect operation, affecting the stability of communication. In addition, due to the narrow internal space of the fiber optic cable distribution box, traditional physical locks cannot meet the requirements of high security and intelligent management. Summary of the Invention
[0003] In order to solve the above technical problems existing in the prior art, the present invention provides an NFC passive intelligent lock for a fiber optic cable distribution box in a machine room, which has a simple structure, convenient operation, and strong reliability.
[0004] To solve the above technical problems, the present invention adopts the following technical solution: An NFC passive intelligent lock for a fiber optic cable distribution box in a machine room includes an NFC antenna, an NFC control module, a one-way anti-rotation ratchet tooth, a limit lock tongue, and a lock tongue control device. The signal output end of the NFC antenna is connected to the signal input end of the NFC control module, the signal output end of the NFC control module is connected to the signal input end of the lock tongue control device, and the mechanical power output end of the lock tongue control device is connected to the limit lock tongue; The NFC antenna is arranged outside the fiber optic cable distribution box, the NFC control module and the lock tongue control device are both arranged inside the fiber optic cable distribution box, the one-way anti-rotation ratchet tooth is coaxially arranged on the outer circle of the internal thread sleeve of the fiber optic FC-FC coupler outside the fiber optic cable distribution box, one end of the limit lock tongue is located inside the fiber optic cable distribution box, and the other end of the limit lock tongue extends out of the fiber optic cable distribution box and is in snap-fit connection with the one-way anti-rotation ratchet tooth.
[0005] The lock tongue control device comprises a mounting seat and a motor seat. The mounting seat is fixedly arranged at the bottom of the optical fiber collection box. The motor seat is provided with a micro motor whose main shaft is parallel to the center line of the optical fiber FC-FC coupler. The motor seat is fixedly connected to the mounting seat by a first bolt. A guide hole is vertically arranged in the mounting seat. A lifting column is arranged in the guide hole. A first tension spring is arranged between the lower end of the lifting column and the bottom of the guide hole. A driving groove is opened on the side of the lifting column facing the micro motor. An eccentric shaft extending into the driving groove is fixedly arranged on the outer end surface of the main shaft of the micro motor. A connecting plate is rotatably connected to the mounting seat through a pin shaft perpendicular to the center line of the optical fiber FC-FC coupler. The upper end of the lifting column contacts the bottom surface of the connecting plate. A second tension spring is vertically arranged in the mounting seat. The upper end of the second tension spring is connected to the bottom surface of the connecting plate. The lower end of the second tension spring is connected to the bottom of the mounting seat. The limit lock tongue is located directly above the optical fiber FC-FC coupler. The length direction of the limit lock tongue is parallel to the center line of the optical fiber FC-FC coupler. The inner end of the limit lock tongue is fixedly connected to the connecting plate.
[0006] The one-way stop ratchet teeth and the internal threaded sleeve are manufactured as one piece. The one-way stop ratchet teeth are arranged on the outer circle of the internal threaded sleeve. The outer diameters of three quarters of the outer circle of the one-way stop ratchet teeth are equal, and the outer diameter of the other quarter of the outer circle of the one-way stop ratchet teeth gradually increases.
[0007] A placement slot for placing the NFC antenna is provided on the outside of the optical fiber junction box, and a buckleable decorative cover is provided at the placement slot.
[0008] A groove for accommodating the micro motor is provided in the middle of the mounting seat.
[0009] The connecting plates extend downwards respectively on the left and right sides of the mounting seat and are rotatably connected to the two ends of the pin shaft. The connecting plates and the limiting locking tongue are manufactured in one piece.
[0010] Adopting the above technical solution, aiming at the tiny size of the optical fiber FC-FC coupler and the limited internal space of the optical fiber junction box, this application adopts NFC passive lock technology. NFC (Near Field Communication) is a short-range wireless communication technology with an operating frequency of 13.56MHz and a communication protocol of ISO / IEC 14443-A. NFC has the following characteristics: 1) Passive power supply: The NFC module is powered by the electromagnetic field energy generated by the NFC function of the mobile phone, without the need for an external battery. The energy conversion efficiency is high, up to hundreds of milliwatts, ensuring the normal operation of the lock.
[0011] 2) Communication and encryption: The NFC module has a built-in high-storage capacity chip (over 80KB), supports a variety of international standard algorithms (such as RSA, DES, AES) and China's national secret algorithms (SM1, SM2, SM3, SM4), and encrypts communications throughout the process to ensure the security of information transmission.
[0012] 3) Intelligent management: Authorized unlocking and remote management are achieved through the universal control APP. Users can conveniently control the status of the lock through the NFC function of the mobile phone.
[0013] During the normal operation of the fiber optic junction box, the limit lock tongue blocks the one-way anti-rotation ratchet teeth from rotating in the loosening direction and can only be tightened, thereby preventing the internal thread sleeve from loosening and causing the optical communication to be disconnected by mistake. When the optical fiber FC-FC coupler needs to be opened for maintenance, use the NFC function of the mobile phone to open it, and bring the mobile phone close to the NFC antenna (distance ≤ 5cm). The NFC antenna transmits the signal to the NFC control module, and the NFC control module automatically recognizes and authorizes the micro motor to start. The main shaft of the micro motor drives the eccentric shaft to rotate a certain angle. During the rotation process, the eccentric shaft drives the lifting column to move upward in the guide hole. The lifting column lifts the connecting plate upward, and the limit lock tongue integrated with the connecting plate rotates upward with the pin shaft as the center line. The limit lock tongue is lifted upward, and the bottom surface of the limit lock tongue is higher than the maximum diameter of the one-way anti-rotation ratchet teeth. The limit lock tongue no longer blocks the one-way anti-rotation ratchet, and the internal thread sleeve is loosened (counterclockwise rotation) to disassemble the optical fiber FC-FC coupler. After a period of time, the main shaft of the micro motor rotates in the opposite direction to reset, the eccentric shaft drives the lifting column to move downward, the second spring pulls the connecting plate downward to reset, and the limit lock tongue follows the connecting plate to reset downward. When the maintenance is completed, when the internal thread sleeve and the one-way anti-rotation ratchet are tightened clockwise, the limit lock tongue will not block the one-way anti-rotation ratchet from rotating due to the sliding contact between the outer circle of the one-way anti-rotation ratchet and the limit lock tongue until the internal thread sleeve is tightened. When the internal thread sleeve and the one-way anti-rotation ratchet rotate counterclockwise, the one-way anti-rotation ratchet is blocked by the limit lock tongue and cannot rotate, thereby preventing the optical fiber FC-FC coupler from being disconnected by mistake.
[0014] The placement slot is used to place the NFC antenna, and a decorative cover is provided to protect the NFC antenna from damage.
[0015] A groove is arranged in the middle of the mounting seat for placing the micro motor, making the whole structure more compact.
[0016] The connecting plate and the limiting locking tongue are processed in one piece, so that the limiting locking tongue has good elasticity and toughness, thereby ensuring the reliability of the entire limiting one-way anti-rotation ratchet.
[0017] In summary, the principle of the present invention is scientific, and its structure is simple and compact. It aims to solve the problem that the fiber optic FC-FC coupler is easily accidentally disconnected during operation. By innovatively adopting the NFC passive lock technology, intelligent and highly secure lock control management is achieved. The present invention takes the NFC passive lock as the core, uses the NFC function of the mobile phone to achieve convenient unlocking, without an external power supply, and has a high energy conversion efficiency. At the same time, it supports a variety of international and national cryptographic algorithms to ensure the security of information transmission. Combining the lever lifting principle, a micro-motor drives a connecting plate to rise through an eccentric shaft, and the connecting plate synchronously drives the limit lock tongue to rise to achieve the unlocking function. After locking, the limit lock tongue blocks the one-way anti-rotation ratchet from loosening, effectively preventing the accidental disconnection of the fiber optic FC-FC coupler. It overcomes the problem of controlling the limit lock tongue under the small size of the coupler, reflecting a high degree of scientificity and technological advancement. Its originality lies in the combination of the NFC passive lock technology and the fiber optic coupler, filling a market gap, having significant practical application value, and can be widely applied in fields such as communication and data centers, effectively improving the security and management efficiency of fiber optic devices, and having important practical significance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention installed in a fiber optic distribution box; Figure 2 is a top view of the limit lock tongue and the lock tongue control device; Figure 3 is Figure 2 A - A cross-sectional view in Figure 4 is Figure 2 view B in Figure 5 is a partial cross-sectional view of the lock tongue control device. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following further describes the embodiments of the present invention in detail with reference to the drawings and embodiments.
[0020] As Figures 1-5 shown, a kind of NFC passive intelligent lock for a computer room fiber optic distribution box of the present invention includes an NFC antenna 1, an NFC control module 2, a one-way anti-rotation ratchet tooth 3, a limit lock tongue 4, and a lock tongue control device 21. The signal output end of the NFC antenna 1 is connected to the signal input end of the NFC control module 2, the signal output end of the NFC control module 2 is connected to the signal input end of the lock tongue control device 21, and the mechanical power output end of the lock tongue control device 21 is connected to the limit lock tongue 4; The NFC antenna 1 is arranged outside the optical fiber distribution box 5, the NFC control module 2 and the locking tongue control device 21 are both arranged inside the optical fiber distribution box 5, the one-way anti-rotation ratchet teeth 3 are coaxially arranged on the outer circle of the internal thread sleeve 6 outside the optical fiber FC-FC coupler in the optical fiber distribution box 5, one end of the limit locking tongue 4 is located inside the optical fiber distribution box 5, and the other end of the limit locking tongue 4 extends out of the optical fiber distribution box 5 and is in snap-fit connection with the one-way anti-rotation ratchet teeth 3.
[0021] The locking tongue control device 21 includes a mounting seat 7 and a motor seat 8. The mounting seat 7 is fixedly arranged at the inner bottom of the optical fiber distribution box 5. A micro-motor 10 with a main shaft parallel to the center line of the optical fiber FC-FC coupler 9 is arranged on the motor seat 8. The motor seat 8 is fixedly connected with the mounting seat 7 through a first bolt 11. A guide hole is vertically arranged inside the mounting seat 7. A lifting column 12 is arranged inside the guide hole. A first tension spring 13 is arranged between the lower end of the lifting column 12 and the bottom of the guide hole. A driving groove 14 is arranged on one side surface of the lifting column 12 facing the micro-motor 10. An eccentric shaft 15 extending into the driving groove 14 is fixedly arranged on the outer end surface of the main shaft of the micro-motor 10. A connecting plate 17 is rotatably connected to the mounting seat 7 through a pin shaft 16 perpendicular to the center line of the optical fiber FC-FC coupler 9. The upper end of the lifting column 12 contacts the bottom surface of the connecting plate 17. A second tension spring 18 is vertically arranged inside the mounting seat 7. The upper end of the second tension spring 18 is connected to the bottom surface of the connecting plate 17, and the lower end of the second tension spring 18 is connected to the bottom of the mounting seat 7. The limit locking tongue 4 is located directly above the optical fiber FC-FC coupler 9. The length direction of the limit locking tongue 4 is parallel to the center line of the optical fiber FC-FC coupler 9. The inner end of the limit locking tongue 4 is fixedly connected with the connecting plate 17.
[0022] The one-way anti-rotation ratchet teeth 3 and the internal thread sleeve 6 are integrally processed and manufactured. One one-way anti-rotation ratchet tooth 3 is arranged on the outer circle of the internal thread sleeve 6. The outer diameters of three-quarters of the outer circle of the one-way anti-rotation ratchet teeth 3 are equal, and the outer diameter of the other quarter of the outer circle of the one-way anti-rotation ratchet teeth 3 gradually increases.
[0023] A placement groove 19 for placing the NFC antenna 1 is arranged on the outer side of the optical fiber distribution box 5. A decorative cover that can be snapped open is arranged at the position of the second tension spring 18.
[0024] A groove 20 for accommodating and placing the micro-motor 10 is arranged in the middle of the mounting seat 7.
[0025] The connecting plate 17 extends downward on both the left and right sides of the mounting seat 7 and is rotatably connected to the two ends of the pin shaft 16. The connecting plate 17 and the limit locking tongue 4 are integrally processed and manufactured.
[0026] During the normal operation of the optical fiber hub 5, the limit lock tongue 4 blocks the one-way anti-rotation ratchet teeth 3 from rotating in the loosening direction, and can only be tightened, thereby preventing the internal thread sleeve 6 from loosening and causing the optical communication to be disconnected by mistake. When the optical fiber FC-FC coupler 9 needs to be opened for maintenance, the NFC function of the mobile phone is turned on, and the mobile phone is close to the NFC antenna 1 (distance ≤ 5cm). The NFC antenna 1 transmits the signal to the NFC control module 2, and the NFC control module 2 automatically recognizes and authorizes the micro motor 10 to start. The main shaft of the micro motor 10 drives the eccentric shaft 15 to rotate a certain angle. During the rotation process, the eccentric shaft 15 drives the lifting column 12 to move upward in the guide hole. The lifting column 12 lifts the connecting plate 17 upward, and the limit lock tongue 4 integrated with the connecting plate 17 rotates upward with the pin shaft 16 as the center line. The limit lock tongue 4 is lifted upward, and the bottom surface of the limit lock tongue 4 is higher than the maximum diameter of the one-way anti-rotation ratchet teeth 3. The limit lock tongue 4 no longer blocks the one-way anti-rotation ratchet, and the internal thread sleeve 6 is loosened (rotated counterclockwise), and the optical fiber FC-FC coupler 9 can be disassembled. After a period of time, the main shaft of the micro motor 10 rotates in the reverse direction to reset, the eccentric shaft 15 drives the lifting column 12 to move downward, the second spring pulls the connecting plate 17 to reset downward, and the limit lock tongue 4 follows the connecting plate 17 to reset downward. When the inspection is completed, when the internal thread sleeve 6 and the one-way anti-rotation ratchet are tightened clockwise, since the outer circle of the one-way anti-rotation ratchet is in sliding contact with the limit lock tongue 4, the limit lock tongue 4 will not block the one-way anti-rotation ratchet from rotating until the internal thread sleeve 6 is tightened. When the internal thread sleeve 6 and the one-way anti-rotation ratchet rotate counterclockwise, the one-way anti-rotation ratchet is blocked by the limit lock tongue 4 and cannot rotate, thereby preventing the optical fiber FC-FC coupler 9 from being disconnected by mistake.
[0027] The second tension spring 18 is provided to place the NFC antenna 1 , and a decorative cover is provided to protect the NFC antenna 1 from being damaged.
[0028] A groove 20 is provided in the middle of the mounting seat 7 for placing the micro motor 10, making the entire structure more compact.
[0029] The connecting plate 17 and the position-limiting locking tongue 4 are integrally processed, so that the position-limiting locking tongue 4 has good elasticity and toughness, thereby ensuring the reliability of the entire position-limiting one-way anti-rotation ratchet.
[0030] The above embodiments illustrate the basic principles and features of the present invention, but the above only illustrates the preferred embodiments of the present invention and is not limited to the embodiments. Under the inspiration of this patent, a person skilled in the art can make many forms of deformation and improvement without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention shall be subject to the attached claims.
Claims
1. An NFC passive smart lock for a computer room optical fiber junction box, characterized by: It includes an NFC antenna, an NFC control module, a one-way ratchet tooth, a limit locking tongue, and a locking tongue control device. The signal output end of the NFC antenna is connected to the signal input end of the NFC control module. The signal output end of the NFC control module is connected to the signal input end of the locking tongue control device. The mechanical power output end of the locking tongue control device is connected to the limit locking tongue. The NFC antenna is arranged outside the optical fiber distribution box. Both the NFC control module and the locking tongue control device are arranged inside the optical fiber distribution box. The one-way ratchet tooth is coaxially arranged on the outer circle of the internal thread sleeve of the optical fiber FC-FC coupler outside the optical fiber distribution box. One end of the limit locking tongue is located inside the optical fiber distribution box, and the other end of the limit locking tongue extends out of the optical fiber distribution box and is in snap-fit connection with the one-way ratchet tooth.
2. According to claim 1, the NFC passive smart lock for the optical fiber hub box in a computer room is characterized by: The locking tongue control device includes a mounting seat and a motor seat. The mounting seat is fixedly arranged at the inner bottom of the optical fiber distribution box. A micro motor with a main shaft parallel to the center line of the optical fiber FC-FC coupler is arranged on the motor seat. The motor seat is fixedly connected to the mounting seat through a first bolt. A guide hole is vertically arranged inside the mounting seat. A lifting column is arranged inside the guide hole. A first tension spring is arranged between the lower end of the lifting column and the bottom of the guide hole. A driving groove is arranged on one side surface of the lifting column facing the micro motor. An eccentric shaft extending into the driving groove is fixedly arranged on the outer end surface of the main shaft of the micro motor. A connecting plate is rotatably connected to the mounting seat through a pin shaft perpendicular to the center line of the optical fiber FC-FC coupler. The upper end of the lifting column contacts the bottom surface of the connecting plate. A second tension spring is vertically arranged inside the mounting seat. The upper end of the second tension spring is connected to the bottom surface of the connecting plate, and the lower end of the second tension spring is connected to the bottom of the mounting seat. The limit locking tongue is located directly above the optical fiber FC-FC coupler. The length direction of the limit locking tongue is parallel to the center line of the optical fiber FC-FC coupler. The inner end of the limit locking tongue is fixedly connected to the connecting plate.
3. The NFC passive smart lock for a computer room optical fiber junction box according to claim 1 or 2, characterized in that: The one-way ratchet tooth and the internal thread sleeve are integrally processed and manufactured. One one-way ratchet tooth is arranged on the outer circle of the internal thread sleeve. The outer diameters of three-quarters of the outer circle of the one-way ratchet tooth are equal, and the outer diameter of the other quarter of the outer circle of the one-way ratchet tooth gradually increases.
4. The NFC passive smart lock for a computer room optical fiber hub box according to claim 1 or 2, characterized in that: A placement groove for placing the NFC antenna is arranged on the outer side of the optical fiber distribution box, and a detachable decorative cover is arranged at the placement groove.
5. According to claim 3, the NFC passive smart lock for the optical fiber junction box in the computer room is characterized by: A groove for accommodating and placing the micro motor is arranged in the middle of the mounting seat.
6. The NFC passive smart lock for a computer room optical fiber junction box according to claim 3 is characterized by: The connecting plate extends downward on both the left and right sides of the mounting seat and is rotatably connected to the two ends of the pin shaft. The connecting plate and the limit locking tongue are integrally processed and manufactured.