Five-prevention lock, five-prevention device and five-prevention device unlocking method

Abstract

This invention belongs to the field of substation lock technology and discloses a five-proof lock, a five-proof device, and a method for unlocking the five-proof device. The five-proof lock includes a lock body, a lock ring, an unlocking mechanism, and a locking element. A first lock ring tube and a second lock ring tube are spaced apart inside the lock body. One end of the lock ring extends into the first lock ring tube, and a first elastic element is provided between this end and the bottom of the first lock ring tube. The other end of the lock ring has a locking port and can extend into the second lock ring tube. The locking element inside the lock body can be correspondingly engaged with the locking port. The unlocking mechanism drives the locking element to move. The key connector of the five-proof key can be inserted into the lock body to enable communication between the five-proof key and the unlocking mechanism, and to drive the locking element to disengage from the locking port. The locking element is located inside the lock body. One end of the locking element abuts against the end of the lock ring that extends into the second lock ring tube, and the other end has a locking connector. After the lock ring pops out of the lock body, the locking connector abuts against the key connector. The lock automatically locks after being unlocked.

Description

Technical Field

[0001] This invention relates to the field of locks for technical substations, and in particular to a five-proof lock, a five-proof device, and a method for unlocking the five-proof device. Background Technology

[0002] To ensure the safety of substations, it is currently necessary to equip them with five-proof interlocking devices. These five-proof devices prevent accidental opening and closing of switches, opening and closing disconnectors under load, closing disconnectors with ground wires / grounding switches connected, connecting ground wires / closing grounding switches while energized, and accidentally entering energized compartments. These are effective means to prevent electrical misoperation and curb power safety accidents. Currently, although the five-proof devices for substations are widely used and have achieved significant results, the following issues still exist that may lead to the risk of misoperation:

[0003] The existing five-proof lock has a locking loophole. During the operation of the knife switch, after the maintenance personnel use the five-proof key to unlock the five-proof lock on site, the five-proof lock is immediately in the open state, and the five-proof lock cannot be "locked as soon as it is opened". This poses a risk that key operating components such as the knife switch mechanism box will lose their "five-proof" protection, which increases the risk of malicious human error.

[0004] Furthermore, when existing five-proof locks fail to achieve key-driven unlocking when the internal unlocking mechanism malfunctions, they are usually dealt with by adding a mechanical unlocking key. However, the existing mechanical unlocking key (i.e., "one-key-for-all") has the vulnerability of being easily copied, thus reducing the security of the five-proof locks.

[0005] Therefore, there is an urgent need for a five-proof lock, a five-proof device, and a method for unlocking the five-proof device, in order to improve the locking function of existing five-proof locks and the security of mechanical unlocking keys. Summary of the Invention

[0006] One objective of this invention is to provide a five-proof lock that allows the locking ring to be relocked inside the lock after the five-proof lock has been unlocked on-site, so that the five-proof key can be removed for the next unlocking step.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A five-proof lock, comprising:

[0009] The lock body has a first lock ring tube and a second lock ring tube arranged at intervals inside;

[0010] The locking ring has one end extending into the first locking ring tube, and a first elastic element is provided between the end and the bottom of the first locking ring tube; the other end of the locking ring is provided with a locking port and can extend into the second locking ring tube, and the locking element inside the lock body can be correspondingly engaged with the locking port.

[0011] The unlocking mechanism is used to drive the locking member to move. The key connector of the five-proof key can be inserted into the lock body so that the five-proof key can communicate with the unlocking mechanism and drive the locking member to disengage from the locking port.

[0012] A locking element is disposed within the lock body. One end of the locking element can abut against one end of the lock ring that extends into the second lock ring tube, and the other end is provided with a locking connector. After the lock ring pops out from the lock body, the locking connector can abut against the key connector.

[0013] Preferably, the lock body is further provided with a locking channel, which is connected to the second lock ring tube. A second elastic member is provided between the locking member and the lock body. The elastic force of the second elastic member can cause the locking member to move within the locking channel and cause the locking connector to abut against the key connector.

[0014] Preferably, the key connector is provided with a locking port. After the key connector is inserted into the lock body and the lock ring pops out from the lock body, the elastic force of the second elastic member can cause the locking connector to abut against the locking port.

[0015] And / or one end of the locking member is provided with an arc-shaped abutment portion, and the elastic force of the second elastic member can cause the arc-shaped abutment portion to abut against one end of the locking ring that extends into the second locking ring tube.

[0016] Preferably, the lock body has a locking channel inside, the locking member is disposed in the locking channel, and an inductor coil is disposed around the outer periphery of the locking member. The inductor coil is communicatively connected to the unlocking mechanism, and the unlocking mechanism is configured to enable the inductor coil to generate electromagnetic force so that the locking member can move in the direction of disengaging from the locking port.

[0017] Preferably, a third elastic element is also provided in the locking channel. One end of the third elastic element is connected to the locking element, and the other end is connected to the lock body. The elastic force of the third elastic element can cause the locking element to move towards the locking opening.

[0018] Preferably, the lock body is further provided with a mechanical unlocking assembly, which includes a mechanical unlocking component and an unlocking rope. One end of the mechanical unlocking component is connected to the bottom end of the lock body and forms a mechanical unlocking port. The other end is connected to the locking component through the unlocking rope. The mechanical unlocking tool can extend into the mechanical unlocking port and drive the mechanical unlocking component to rotate around its axis, so that the unlocking rope is wrapped around the outer periphery of the mechanical unlocking component, so that the unlocking rope pulls the locking component to move away from the locking port and compresses the third elastic element.

[0019] Preferably, the mechanical unlocking assembly further includes a password limiting member, which is radially connected to the outer surface of the lock body and is capable of restricting the mechanical unlocking member from rotating about its axial direction.

[0020] Another objective of this invention is to provide a five-proof device that improves the security of five-proof locks while quickly and efficiently opening them.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] The five-proof device includes the five-proof key and the five-proof lock. The five-proof key includes the key connector, which can be inserted into the lock body to enable the five-proof key to communicate with the unlocking mechanism so that the lock ring pops out of the lock body. After the lock ring pops out of the lock body, the locking connector can abut against the key connector.

[0023] Preferably, the five-proof key includes a display screen that can display the unlock password;

[0024] The five-proof device also includes a mechanical unlocking tool, which can turn the password limiting member according to the unlocking password, so that the password limiting member no longer restricts the mechanical unlocking member from rotating around its axis. The mechanical unlocking tool is inserted into the mechanical unlocking port and turns the mechanical unlocking member. The unlocking rope of the mechanical unlocking component can be wrapped around the outer periphery of the mechanical unlocking member and pull the locking member away from the locking port, so that the lock ring pops out from the lock body.

[0025] Another objective of this invention is to provide a method for unlocking a five-proof device, so as to enable the five-proof lock to be opened smoothly regardless of whether the unlocking mechanism can drive the locking member.

[0026] To achieve this objective, the present invention adopts the following technical solution:

[0027] A method for unlocking a five-proof device, using the aforementioned five-proof device, includes the following steps:

[0028] S100. Insert the key connector of the five-proof key into the lock body. The five-proof key is communicatively connected to the unlocking mechanism. The unlocking mechanism causes the locking member to disengage from the locking port. The first elastic member causes the lock ring to be ejected from the second lock ring tube. The locking connector of the locking member abuts against the key connector.

[0029] S200. When the unlocking mechanism cannot drive the locking member, the display screen can display the unlocking password. The mechanical unlocking tool is used to rotate the password limiting member to the number of turns corresponding to the unlocking password, so that the password limiting member no longer restricts the mechanical unlocking member from rotating around its axis. Then, the mechanical unlocking tool is inserted into the mechanical unlocking port and rotated. The mechanical unlocking member can drive the locking member to disengage from the locking port, so that the lock ring is ejected from the second lock ring tube.

[0030] The beneficial effects of this invention are:

[0031] This invention belongs to the field of substation lock technology and discloses a five-proof lock. The lock includes a lock body, a lock ring, an unlocking mechanism, and a locking element. The lock body has a first lock ring tube and a second lock ring tube spaced apart inside. One end of the lock ring extends into the first lock ring tube, and a first elastic element is provided between this end and the bottom of the first lock ring tube. The other end of the lock ring has a locking port and can extend into the second lock ring tube. The locking element inside the lock body can be correspondingly engaged with the locking port. The unlocking mechanism is communicatively connected to the locking element. The key connector of the five-proof key can be inserted into the unlocking mechanism and communicatively connected to it, driving the locking element to disengage from the locking port. The locking element is located inside the lock body. One end of the locking element abuts against the end of the lock ring that extends into the second lock ring tube, and the other end has a locking connector. After the lock ring pops out of the lock body, the locking connector can abut against the key connector. After the five-proof key unlocks the five-proof lock, the lock ring can automatically pop out from inside the lock body. After popping out, the locking joint can abut against the key joint, thus completing the mechanical locking. Before the lock ring is locked back into the lock body, the five-proof key cannot be removed from the lock body, thereby realizing automatic mechanical locking.

[0032] Furthermore, this invention also provides a five-proof device, which includes the aforementioned five-proof lock, a five-proof key, and a mechanical unlocking tool. During normal unlocking, the five-proof lock can be unlocked using the five-proof key. When the five-proof key fails to unlock, the mechanical unlocking tool can also be used. Moreover, since unlocking the five-proof lock using the mechanical unlocking tool requires first establishing a communication connection between the five-proof key and the lock to obtain a password, and then using the password to unlock the lock, this prevents the mechanical unlocking tool from being easily copied, thus avoiding the risk of unauthorized unlocking and breaking of the five-proof lock, and greatly reducing the possibility of human error in substations.

[0033] Finally, the present invention provides a method for unlocking a five-proof device, which can quickly, efficiently and safely unlock the five-proof device. Attached Figure Description

[0034] Figure 1 This is a structural schematic diagram of the five-proof lock provided by the present invention;

[0035] Figure 2 This is a cross-sectional view of the five-proof lock provided by the present invention;

[0036] Figure 3 This is a structural schematic diagram of the five-proof key provided by the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the five-proof key and the five-proof lock provided by the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the five-proof key successfully unlocking the five-proof lock provided by the present invention;

[0039] Figure 6 This is a schematic diagram of the mechanical unlocking component provided by the present invention.

[0040] In the picture:

[0041] 10. Lock body; 11. First elastic element; 12. Locking element; 121. Inductor coil; 13. Locking element; 131. Locking connector; 132. Arc-shaped abutment part; 14. Locking channel; 15. Second elastic element; 16. Third elastic element;

[0042] 20. Locking ring;

[0043] 30. Unlocking mechanism; 31. Communication module; 311. Socket; 3111. Positive socket; 3112. Negative socket; 32. Control module;

[0044] 40. Mechanical unlocking assembly; 41. Mechanical unlocking component; 411. Mechanical unlocking port; 42. Unlocking rope; 43. Combination lock limiter; 431. Combination screw; 432. Locking part; 433. Elastic part; 434. Unlocking port;

[0045] 50. Five-proof key; 51. Key connector; 511. Locking port; 512. Positive connector; 513. Negative connector; 52. Display screen; 53. Key switch; 54. NFC unlocking module. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0050] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0051] First, such as Figures 1-5As shown, this embodiment provides a five-proof lock, which includes a lock body 10, a lock ring 20, an unlocking mechanism 30, and a locking element 13. The lock body 10 has a first lock ring tube and a second lock ring tube spaced apart inside. One end of the lock ring 20 extends into the first lock ring tube, and a first elastic element 11 is provided between this end and the bottom of the first lock ring tube. The other end of the lock ring 20 has a locking port and can extend into the second lock ring tube. The locking element 12 inside the lock body 10 can be correspondingly engaged with the locking port. The locking mechanism 30 is used to drive the locking member 12 to move. The key connector 51 of the five-proof key 50 can be inserted into the lock body 10 so that the five-proof key 50 can communicate with the unlocking mechanism 30 and drive the locking member 12 to disengage from the locking port. The locking member 13 is disposed inside the lock body 10. One end of the locking member 13 can abut against one end of the lock ring 20 that extends into the second lock ring tube, and the other end is provided with a locking connector 131. After the lock ring 20 pops out from inside the lock body 10, the locking connector 131 can abut against the key connector 51.

[0052] During the unlocking process, the five-proof lock first connects the five-proof key 50 to the unlocking mechanism 30 of the five-proof lock. At this time, the unlocking mechanism 30 drives the locking member 12 to disengage from the locking port. Therefore, under the action of the first elastic member 11, the lock ring 20 can automatically pop out from inside the lock body 10. After popping out, the locking connector 131 can abut against the key connector 51. That is, through the locking connector 131, after the five-proof key 50 is unlocked, the five-proof key 50 is still connected to the unlocking mechanism 30 of the five-proof lock. This achieves the locking function that after the lock ring 20 pops out of the lock body 10, the five-proof key 50 can only be pulled out for the next unlocking operation when the lock ring 20 is reinserted into the lock body 10. This reduces the risk of human error in the substation.

[0053] It is worth noting that in this embodiment, the five-proof lock is mainly used in substations. The five protections are: preventing accidental opening and closing of switches, preventing opening and closing of disconnectors under load, preventing closing of disconnectors with ground wires / grounding switches connected, preventing grounding wires / grounding switches connected while energized, and preventing accidental entry into energized compartments. It is an effective means to prevent electrical safety accidents caused by misoperation. In other embodiments, this five-proof lock can also be applied to other technical fields that can prevent misoperation; the application scenario of the five-proof lock is not limited in this embodiment. Furthermore, in this embodiment, the five-proof key 50, as... Figures 1-3 As shown, the mechanism includes a key connector 51, a key switch 53, and an NFC unlocking module 54. The end of the unlocking mechanism 30 away from the locking member 12 is provided with a socket 311. When unlocking, the key connector 51 can be inserted into the socket 311 and the key switch 53 can be pressed. The NFC unlocking module 54 can communicate with the unlocking mechanism 30 and transmit the unlocking signal to the locking member 12, so that the locking member 12 moves away from the locking port, so that the lock ring 20 can pop out from the lock body 10.

[0054] To simplify the overall structure, such as Figure 2 As shown, a locking channel 14 is also provided inside the lock body 10. The locking channel 14 is connected to the second lock ring tube. A second elastic element 15 is provided between the locking member 13 and the lock body 10. The elastic force of the second elastic element 15 enables the locking member 13 to move within the locking channel 14 and to abut against the key connector 51. By providing the locking channel 14, sufficient space is provided for the movement of the locking member 13 inside the lock body 10. In addition, when the lock ring 20 is placed inside the lock body 10, the lock ring 20 located in the second lock ring tube abuts against one end of the locking member 13. At this time, the second elastic element 15 is in a compressed state. When the lock ring 20 pops out from inside the lock body 10, the locking member 13 no longer abuts against the lock ring 20. At this time, the elastic force of the second elastic element 15 enables the locking member 13 to move within the locking channel 14 and to abut against the key connector 51. This design not only ensures that the locking ring 20 can pop out from the lock body 10 while the locking member 13 abuts against the key connector 51, but also simplifies the overall internal structure of the lock body 10. Synchronous locking can be completed simply by setting the second elastic member 15, which is simple, efficient and reduces costs.

[0055] like Figures 1-5 As shown, the unlocking mechanism 30 includes a communication module 31 and a control module 32. One end of the control module 32 is electrically connected to the locking member 12, and the other end is communicatively connected to the communication module 31. The other end of the communication module 31 is provided with a socket 311, through which the key connector 51 can be inserted into the lock body 10, and the NFC unlocking module 54 of the five-proof key 50 can be communicatively connected with the communication module 31, so that the lock ring 20 can be ejected from the lock body 10. In addition, the key connector 51 is provided with a locking port 511. After the key connector 51 is inserted into the lock body 10 through the socket 311 and the lock ring 20 is ejected from the lock body 10, the elastic force of the second elastic member 15 can cause the locking connector 131 to abut against the locking port 511. And / or one end of the locking member 13 is provided with an arc-shaped abutment part 132, and the elastic force of the second elastic member 15 can cause the arc-shaped abutment part 132 to abut against the end of the lock ring 20 that extends into the second lock ring tube. Since the end of the locking ring 20 that extends into the second locking ring tube has a certain curvature, the arc-shaped abutment part 132 can be provided to enable the locking member 13 to better abut against the end of the locking ring 20, thereby ensuring good unlocking and locking effects.

[0056] It is worth noting that, such as Figure 2As shown, in this embodiment, the locking port 511 and the arc-shaped abutment portion 132 coexist, thereby ensuring a good unlocking effect. Further explanation is that the socket 311 includes a positive socket 3111 and a negative socket 3112. The key connector 51 is correspondingly provided with a positive connector 512 and a negative connector 513. The positive socket 3111 is farther from the bottom surface of the lock body 10, while the negative socket 3112 is closer to the bottom surface of the lock body 10. That is, the positive connector 512 is longer, and the negative connector 513 is shorter. Therefore, for ease of installation, the locking port 511 is located on the positive connector 512. Since the positive connector 512 is longer, it is more convenient to create the locking port 511. In other embodiments, the depths of the positive socket 3111 and the negative socket 3112 can be changed according to actual needs; no other limitations are made in this embodiment.

[0057] like Figure 2 , Figure 4 and Figure 5 To ensure the unlocking effect, a locking channel is provided inside the lock body 10, and a locking member 12 is disposed in the locking channel. An inductor coil 121 is wrapped around the outer periphery of the locking member 12. The inductor coil 121 is electrically connected to the control module 32 of the unlocking mechanism 30. The control module 32 of the unlocking mechanism 30 is configured to enable the inductor coil 121 to generate electromagnetic force, and the locking member 12 can move in the direction of disengaging from the locking port. It is worth noting that in this embodiment, the communication module 31 is an NFC communication module. After the NFC unlocking module 54 of the five-proof key 50 successfully matches with the NFC communication module, that is, the NFC unlocking module 54 reads the NFC tag in the NFC communication module and matches it with the pre-unlocking tag stored in the five-proof key 50, the NFC communication module can then transmit an unlocking signal to the control module 32. The control module 32 can then transmit an electrical signal to the inductor coil 121. According to the principle of "electromagnetism," the magnetic force can drive the locking member 12 to move away from the locking opening, so that the lock ring 20 can be ejected from the lock body 10 by the first elastic member 11. This configuration is simple and low-cost. In other embodiments, all structures that use electrical signal communication to move the locking member 12 away from the locking opening are within the scope of protection disclosed in this embodiment. Furthermore, in this embodiment, the locking member 12 can be any rod-type structure, with one end able to penetrate deep into the locking opening, and the inductor coil 121 conveniently wound around its exterior.

[0058] It is worth noting that in this embodiment, a coil chamber is provided within the locking channel, and the locking member 12 is placed inside the coil chamber, that is, the coil chamber covers the outer periphery of the locking member 12. The inductor coil 121 is wound inside the coil chamber, and the electromagnetic force generated by the inductor coil 121 can pass through the coil chamber and drive the locking member 12 to move away from the locking opening. This arrangement not only prevents the locking member 12 from rubbing against the inductor coil 121 during movement, thereby extending the service life of the inductor coil 121, but also isolates the inductor coil 121 from other components inside the lock body 10, placing the inductor coil 121 in a favorable environment, making the generated magnetic field lines more evenly distributed, and thus generating sufficient electromagnetic force to drive the locking member 12, ensuring unlocking efficiency. Furthermore, the coil chamber is supported by rigid plastic, which not only does not affect the "electromagnetism," but its sufficient rigidity also extends its service life.

[0059] like Figure 2 , Figure 4 and Figure 5 As shown, a third elastic element 16 is also provided in the locking channel. One end of the third elastic element 16 is connected to the locking element 12, and the other end is connected to the lock body 10. The elastic force of the third elastic element 16 can cause the locking element 12 to move towards the locking port. This arrangement allows the locking element 12 to move away from the locking port during the unlocking process, which compresses the third elastic element 16. When the re-locking ring 20 is placed in the second lock ring tube and the five-proof key 50 is removed, there is no current flowing through the inductor coil 121 of the locking element 12. At this time, the elastic force of the third elastic element 16 pushes the locking element 12 towards the locking port until the end of the locking element 12 away from the third elastic element 16 is re-engaged into the locking port. At this time, the automatic locking function of the five-proof lock is completed again, which is simple and convenient.

[0060] It is worth noting that in this embodiment, the first elastic element 11, the second elastic element 15, and the third elastic element 16 are all springs. Springs have a simple structure, are inexpensive, and are easy to mass-produce, which can effectively reduce the overall manufacturing cost of the five-proof lock. In other embodiments, all structures capable of performing the working tasks of the first elastic element 11, the second elastic element 15, and the third elastic element 16 are within the protection scope of this embodiment.

[0061] Considering that with only the unlocking mechanism 30 installed, the inductor coil 121 might break or malfunction midway, resulting in the inability to drive the locking member 12 to move. Therefore, as shown in the figure, Figure 4 , Figure 5 and Figure 6A mechanical unlocking assembly 40 is installed inside the five-proof lock. The mechanical unlocking assembly 40 includes a mechanical unlocking component 41 and an unlocking rope 42. One end of the mechanical unlocking component 41 is connected to the bottom end of the lock body 10, forming a mechanical unlocking port 411. The other end is connected to the locking component 12 via the unlocking rope 42. A mechanical unlocking tool can be inserted into the mechanical unlocking port 411 and drive the mechanical unlocking component 41 to rotate around its axis, so that the unlocking rope 42 is wrapped around the outer circumference of the mechanical unlocking component 41. This causes the unlocking rope 42 to pull the locking component 12 to move away from the locking port and compress the third elastic element 16. By setting up the mechanical unlocking assembly 40, it is ensured that the five-proof lock can still be unlocked through the mechanical unlocking assembly 40 when the unlocking mechanism 30 cannot drive the locking component 12 to move.

[0062] Given that mechanical unlocking tools are extremely easy to copy, there is a risk of unauthorized unlocking and breaching of five-proof locks. Therefore, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the mechanical unlocking assembly 40 also includes a password limiting member 43. The password limiting member 43 is radially connected to the outer surface of the lock body 10 along the mechanical unlocking member 41, and the password limiting member 43 can restrict the mechanical unlocking member 41 from rotating about its axial direction. It is worth noting that in this embodiment, multiple password limiting members 43 are spaced apart along the axial direction of the mechanical unlocking member 41, and each password limiting member 43 penetrates the mechanical unlocking member 41. The password limiting member 43 is composed of a password screw 431, a locking part 432, and an elastic part 433. One end of the elastic part 433 is connected to the interior of the lock body 10, and the other end is connected to the locking part 432. The other end of the locking part 432 abuts against the password screw 431. Finally, the password screw 431 is connected to the outer surface of the lock body 10 through the unlocking port 434. Using a mechanical unlocking tool, insert it into the unlocking port 434 and connect it to the combination screw 431. Rotate the combination screw 431 a certain number of turns. The combination screw 431 will move towards the inside of the lock body 10 and push the locking part 432, so that the locking part 432 compresses the elastic part 433. When the gap between the combination screw 431 and the locking part 432 coincides with the gap between the mechanical unlocking part 41 and the inside of the lock body 10, the locking part 432 and the combination screw 431 will no longer hinder the rotation of the mechanical unlocking part 41. At this time, by inserting the mechanical unlocking tool into the mechanical unlocking port 411 and twisting the mechanical unlocking part 41, the unlocking rope 42 is wrapped around the outer circumference of the mechanical unlocking part 41. Then, the unlocking rope 42 pulls the locking part 12 to disengage it from the locking port, thereby completing the unlocking work.

[0063] Furthermore, in this embodiment, when the inductor coil 121 fails to drive the locking member 12 to move, the five-proof key 50, after being connected to the unlocking mechanism 30, displays the number of turns required for each password limit member 43 on its display screen 52. This reduces the risk of the mechanical unlocking tool being easily copied and decreases the likelihood of misoperation. Further, in this embodiment, the mechanical unlocking tool is a Phillips screwdriver. In other embodiments, different shapes of mechanical unlocking tools can be designed based on the specific structure of the mechanical unlocking component 40 and the password limit member 43; no other limitations are imposed in this embodiment.

[0064] This embodiment also provides a five-proof device, including a five-proof key 50 and the aforementioned five-proof lock. The five-proof key 50 includes a key connector 51, which can be inserted into the lock body 10 through the socket 311, so that the NFC unlocking module 54 of the five-proof key 50 and the communication module of the unlocking mechanism 30 form a communication connection, so that the lock ring 20 pops out from the lock body 10, and after the lock ring 20 pops out from the lock body 10, the locking connector 131 can abut against the key connector 51.

[0065] In addition, such as Figure 3 As shown, the five-proof key 50 also includes a display screen 52, which can display the unlocking password; the five-proof device also includes a mechanical unlocking tool, which can turn the password limiting member 43 according to the unlocking password, so that the password limiting member 43 no longer restricts the mechanical unlocking member 41 from rotating around its axis. The mechanical unlocking tool is inserted into the mechanical unlocking port 411 and turns the mechanical unlocking member 41. The unlocking rope 42 of the mechanical unlocking assembly 40 can be wrapped around the outer periphery of the mechanical unlocking member 41 and pull the locking member 12 in a direction away from the locking port, so that the lock ring 20 pops out from the lock body 10. Since the five-proof key 50 is still needed to display the unlocking password during the mechanical unlocking process, and the mechanical unlocking tool only turns the password limiting member 43 according to the unlocking password, the risk of the mechanical unlocking tool being copied and unlocking the five-proof lock without authorization is avoided.

[0066] This embodiment also provides a method for unlocking a five-proof device, which uses the aforementioned five-proof device and includes the following steps:

[0067] S100. Insert the key connector 51 of the five-proof key 50 into the unlocking mechanism 30. The unlocking mechanism 30 causes the locking member 12 to disengage from the locking port. The first elastic member 11 causes the locking ring 20 to be ejected from the second locking ring tube. The second elastic member 15 pushes the locking member 13 in the direction close to the five-proof key 50, and causes the locking connector 131 of the locking member 13 to abut against the locking port 511 of the key connector 51.

[0068] When the unlocking mechanism 30 fails to drive the locking member 12, insert the key connector 51 of the five-proof key 50 into the unlocking mechanism 30. The display screen 52 can display the unlocking password. Use a mechanical unlocking tool to rotate the password limit member 43 the number of turns corresponding to the unlocking password, so that the password limit member 43 no longer restricts the mechanical unlocking member 41 from rotating around its axis. Then insert the mechanical unlocking tool into the mechanical unlocking port 411 and rotate it. The mechanical unlocking member 41 can drive the locking member 12 to disengage from the locking port, so that the lock ring 20 is ejected from the second lock ring tube.

[0069] This method allows for quick and efficient unlocking of five-proof locks. Even when the unlocking mechanism 30 cannot smoothly drive the locking member 12 to move through the inductor coil 121, the five-proof lock can still be unlocked using a mechanical unlocking tool.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A five-proof lock, characterized in that, include: The lock body (10) has a first lock ring tube and a second lock ring tube arranged at intervals inside; The locking ring (20) has one end extending into the first locking ring tube, and a first elastic element (11) is provided between the end and the bottom of the first locking ring tube; the other end of the locking ring (20) is provided with a locking port and can extend into the second locking ring tube, and the locking element (12) inside the lock body (10) can be correspondingly engaged with the locking port; The unlocking mechanism (30) is used to drive the locking member (12) to move, and the key connector (51) of the five-proof key (50) can be inserted into the lock body (10) so that the five-proof key (50) can communicate with the unlocking mechanism (30) and drive the locking member (12) to disengage from the locking port; A locking element (13) is provided inside the lock body (10). One end of the locking element (13) can abut against one end of the lock ring (20) that extends into the second lock ring tube, and the other end is provided with a locking connector (131). After the lock ring (20) pops out from inside the lock body (10), the locking connector (131) can abut against the key connector (51). The lock body (10) has a locking channel inside, and the locking member (12) is disposed in the locking channel. An inductor coil (121) is disposed around the outer periphery of the locking member (12). The inductor coil (121) is electrically connected to the unlocking mechanism (30). The unlocking mechanism (30) is configured to generate electromagnetic force through the inductor coil (121) so that the locking member (12) can move in the direction of disengaging from the locking port. A third elastic member (16) is also disposed in the locking channel. One end of the third elastic member (16) is connected to the locking member (12), and the other end is connected to the lock body (10). The elastic force of the third elastic member (16) can move the locking member (12) toward the locking port. A mechanical unlocking assembly (40) is also disposed in the lock body (10). The mechanical unlocking assembly (40) includes a mechanical unlocking member (41) and a mechanical unlocking member (42). The mechanical unlocking component (41) is connected at one end to the bottom of the lock body (10) and forms a mechanical unlocking port (411). The other end is connected to the locking component (12) through the unlocking rope (42). The mechanical unlocking tool can be inserted into the mechanical unlocking port (411) and drive the mechanical unlocking component (41) to rotate around its axis, so that the unlocking rope (42) is wrapped around the outer periphery of the mechanical unlocking component (41), so that the unlocking rope (42) pulls the locking component (12) to move away from the locking port and compress the third elastic element (16). The mechanical unlocking assembly (40) also includes a password limiting component (43), which is connected to the outer surface of the lock body (10) along the radial direction of the mechanical unlocking component (41). The password limiting component (43) can limit the mechanical unlocking component (41) from rotating around its axis.

2. The five-proof lock according to claim 1, characterized in that, The lock body (10) is also provided with a locking channel (14), which is connected to the second lock ring tube. A second elastic element (15) is provided between the locking member (13) and the lock body (10). The elastic force of the second elastic element (15) enables the locking member (13) to move in the locking channel (14) and make the locking connector (131) abut against the key connector (51).

3. The five-proof lock according to claim 2, characterized in that, The key connector (51) is provided with a locking port (511). After the key connector (51) is inserted into the lock body (10) and the lock ring (20) pops out from the lock body (10), the elastic force of the second elastic member (15) can make the locking connector (131) abut against the locking port (511). And / or one end of the locking member (13) is provided with an arc-shaped abutment (132), and the elastic force of the second elastic member (15) can make the arc-shaped abutment (132) abut against one end of the locking ring (20) that extends into the second locking ring tube.

4. A five-proof device, characterized in that, Includes the five-proof key (50) and the five-proof lock as described in any one of claims 1-3. The five-proof key (50) includes the key connector (51), which can be inserted into the lock body (10) to make the five-proof key (50) communicate with the unlocking mechanism (30) so that the lock ring (20) pops out from the lock body (10), and after the lock ring (20) pops out from the lock body (10), the locking connector (131) can abut against the key connector (51).

5. The five-proof device according to claim 4, characterized in that, The five-proof key (50) includes a display screen (52) which can display the unlock password; The five-proof device also includes a mechanical unlocking tool. The mechanical unlocking tool can turn the password limiting member (43) according to the unlocking password, so that the password limiting member (43) no longer restricts the mechanical unlocking member (41) from rotating around its axis. The mechanical unlocking tool is inserted into the mechanical unlocking port (411) and turns the mechanical unlocking member (41). The unlocking rope (42) of the mechanical unlocking assembly (40) can wrap around the outer periphery of the mechanical unlocking member (41) and pull the locking member (12) in a direction away from the locking port, so that the locking ring (20) pops out from the lock body (10).

6. A method for unlocking a five-proof device, using the five-proof device as described in claim 5, wherein the method for unlocking the five-proof device includes the following steps: S100. Insert the key connector (51) of the five-proof key (50) into the lock body (10). The five-proof key (50) is connected to the unlocking mechanism (30). The unlocking mechanism (30) causes the locking member (12) to disengage from the locking port. The first elastic member (11) causes the lock ring (20) to be ejected from the second lock ring tube. The locking connector (131) of the locking member (13) abuts against the key connector (51). S200. When the unlocking mechanism (30) cannot drive the locking member (12), the display screen (52) can display the unlocking password. The mechanical unlocking tool is used to rotate the password limiting member (43) the number of turns corresponding to the unlocking password, so that the password limiting member (43) no longer restricts the mechanical unlocking member (41) from rotating around its axis. Then, the mechanical unlocking tool is inserted into the mechanical unlocking port (411) and rotated. The mechanical unlocking member (41) can drive the locking member (12) to disengage from the locking port, so that the locking ring (20) is ejected from the second locking ring tube.

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