CN213424037U - Passive NFC lock - Google Patents

Abstract

The utility model provides a passive NFC lock, this passive NFC lock includes: the NFC antenna is arranged on the handle; the driving mechanism and the NFC antenna are both arranged inside the handle, the driving mechanism is connected with the NFC antenna, and an output shaft of the driving mechanism is provided with a squeezing wheel; one end of the bolt connecting piece is rotatably sleeved outside the fixing part of the handle, and the other end of the bolt connecting piece is used for connecting a bolt; the side wall of the fixing part is provided with a sliding hole, and a moving part partially embedded in the sliding hole is arranged in the fixing part. The utility model discloses a NFC antenna, when the equipment that has the NFC chip externally is close to, carry out authentication and produce the electric energy and supply power to actuating mechanism, drive the extrusion wheel and rotate to promote moving part locking handle and spring bolt connecting piece, and then drive the spring bolt connecting piece through the handle and rotate, thereby realize unblanking.

Description

Passive NFC lock

Technical Field

The utility model relates to a tool to lock technical field particularly, relates to a passive NFC lock.

Background

With the development of modern microelectronic technology and computer technology, electronic locks are entering more and more people's social lives. Compared with the traditional mechanical lock, the electronic lock has obvious advantages in various aspects such as confidentiality, safety, convenience and the like.

However, the existing electronic lock is mostly provided with a battery in the lock, so that the electronic lock is large in size, limited in function and monotonous in variety, and further the popularization and the use of the electronic lock in vast families and offices in the society are limited. As is well known, the service life of a battery is generally 1 to 2 years, and therefore, the conventional electronic locks inevitably have troubles and uncertainties in battery installation, battery maintenance, battery replacement and the like.

Disclosure of Invention

In view of this, the utility model provides a passive NFC lock aims at solving and is equipped with the battery in the current lock and leads to the lock to have trouble and uncertain problem in aspects such as battery installation, battery maintenance and battery change.

The utility model provides a passive NFC lock, this passive NFC lock includes: the NFC antenna is arranged on the handle; the driving mechanism and the NFC antenna are both arranged inside the handle, the driving mechanism is connected with the NFC antenna, and an output shaft of the driving mechanism is provided with a squeezing wheel; one end of the bolt connecting piece is rotatably sleeved outside the fixing part of the handle, and the other end of the bolt connecting piece is used for connecting a bolt; the side wall of the fixed part is provided with a sliding hole, and the inside of the fixed part is provided with a moving part which is partially embedded in the sliding hole; when equipment with an NFC chip outside the NFC antenna is close to the NFC antenna, authentication is carried out, electric energy is generated to supply power to the driving mechanism, so that the extrusion wheel is driven to rotate, the part of the collision of the extrusion wheel is convexly arranged on the moving part inside the handle, the moving part moves along the sliding hole, the part of the moving part is convexly arranged outside the handle and collides with the lock bolt connecting piece, the handle and the lock bolt connecting piece are locked, the handle is rotated to drive the lock bolt connecting piece to rotate, and then the lock bolt is driven to rotate to realize unlocking.

Furthermore, in the passive NFC lock, a protrusion is convexly arranged on the circumferential direction of the extrusion wheel to extrude the movable member, so that the movable member is partially arranged outside the handle and abuts against the bolt connecting member, and the other part of the movable member is embedded in the sliding hole; the extrusion wheel is further provided with a groove used for yielding the moving part, so that the moving part is partially arranged at the groove, and the other part of the moving part is embedded in the sliding hole.

Further, in the passive NFC lock, one side of the protrusion is provided with a guide surface for gradually pushing the moving member, and the other side of the protrusion is connected to the groove; the guide surface is an arc transition surface, and the distance from each point on the arc transition surface to the axis of the extrusion wheel is gradually increased from the position far away from the bulge to the position connected with the bulge.

Further, above-mentioned passive NFC lock, the handle includes: a shell and a cover body which are detachably connected.

Further, according to the passive NFC lock, the housing is provided with a plurality of fastening grooves along the circumferential direction thereof, and the cover body is provided with fastening posts which are arranged in one-to-one correspondence with the fastening grooves and detachably inserted into the fastening grooves.

Further, according to the passive NFC lock, the end portion of the shell, which is close to the cover body, is provided with the plum blossom-shaped rotating portion along the circumferential direction of the shell.

Further, above-mentioned passive NFC lock, the one end of spring bolt connecting piece is equipped with spring bolt connecting portion, and the other end is equipped with fixed cover and establishes the hole for rotationally the cover is established on the fixed part.

Further, in the passive NFC lock, an accommodating structure is concavely disposed on an inner wall of the fixed sleeving hole, so that the moving part is partially accommodated in the accommodating structure.

Further, in the passive NFC lock, the moving part is a ball structure, and the diameter of the moving part is greater than the wall thickness of the side wall of the fixing part, so that the ball structure is partially disposed in the sliding hole.

Further, according to the passive NFC lock, the number of the movable members is multiple, and the movable members are uniformly arranged along the circumferential direction of the handle.

The utility model provides a passive NFC lock through setting up the NFC antenna in handle inside, when the equipment that has the NFC chip externally is close to, carries out authentication and produces the electric energy in order to supply power to actuating mechanism to drive the extrusion wheel and rotate, promote the moving part so that the moving part is protruding to be established and lock handle and spring bolt connecting piece outside the handle, and then drive the spring bolt connecting piece through the handle and rotate, thereby realize unblanking. Compared with the prior art, the passive NFC lock avoids the arrangement of a power supply, avoids the installation, maintenance and replacement of the power supply, solves the troubles and uncertainty caused by battery installation, battery maintenance, battery replacement and the like, can reduce the cost and can be used for a long time; meanwhile, when no power supply exists, the passive NFC lock is safe to store after being produced, a live battery has the possibility of causing fire, the passive NFC lock is safe to transport after being produced, and the battery is not beneficial to air transportation.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a passive NFC lock according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a passive NFC lock according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a handle according to an embodiment of the present invention;

fig. 4 is an exploded view of a handle according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an extrusion wheel provided in an embodiment of the present invention;

fig. 6 is a top view of an extrusion wheel provided in an embodiment of the present invention;

fig. 7 is an isometric view of a tongue connector provided in an embodiment of the present invention;

fig. 8 is an axonometric view of the bolt connector according to another direction provided by the embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, preferred structures of a passive NFC lock provided by the embodiment of the present invention are shown. As shown, the passive NFC lock includes: a handle 1, an NFC antenna (not shown), a drive mechanism 2 and a latch bolt connector 3; wherein the content of the first and second substances,

the driving mechanism 2 and the NFC antenna are both arranged inside the handle 1, the driving mechanism 2 is connected with the NFC antenna, and an output shaft (not shown in the figure) of the driving mechanism 2 is provided with a squeezing wheel 4. Specifically, the NFC antenna may be disposed on an end portion (the lower left end as shown in fig. 1) near the handle 1 protruding outside the passive NFC lock locking device, for example, may be disposed on the cover 13 of the handle 1 to be fixed inside the handle 1, so as to facilitate sensing of the NFC chip; the NFC antenna may include a coil wound with a metal wire or made of a flexible circuit board, and in order to increase inductive energy generated when the NFC chip approaches, the area of the coil may be greater than a threshold value, and the threshold value may be determined according to an actual situation, so as to increase total energy obtained by the NFC antenna when the device having the NFC chip approaches, so as to supply power to the driving mechanism 2 as a power supply. The pressing wheel 4 is provided on an output shaft of the drive mechanism 2 to be driven by the drive mechanism 2. Preferably, the handle 1 may be externally sleeved with a sleeve 6 to be fixed to the locking device of the passive NFC lock, such as a cabinet of a bathing center, by the sleeve 6, so as to subsequently enable the handle 1 to be rotated relative to the locking device.

One end (lower end shown in fig. 2) of the latch bolt connector 3 is rotatably sleeved outside the fixing portion 11 of the handle 1, and the other end (upper end shown in fig. 3) is used for connecting a latch bolt (not shown). Specifically, the lock tongue connecting piece 3 can be fixedly connected with a lock tongue, so that the lock tongue is driven to rotate through the rotation of the lock tongue connecting piece 3, and the unlocking action is further realized; the bolt connecting piece 3 is rotatably sleeved outside the fixing part 11 so as to realize the idling of the handle 1.

The side wall of the fixing portion 11 is provided with a sliding hole 111, and the movable member 5 partially embedded in the sliding hole 111 is provided therein. Specifically, the fixing portion 11 is provided with a sliding hole 111 corresponding to the position of the movable element 5, and the sliding hole may be a through hole structure penetrating through a side wall of the fixing portion 11 along a side wall of one side of the fixing portion 11.

When the NFC antenna externally has the equipment of NFC chip and is close to, carry out authentication and produce the electric energy in order to supply power to actuating mechanism 2, rotate in order to drive extrusion wheel 4, 4 conflict parts of extrusion wheel are protruding to be established at 1 inside moving part 5 of handle so that moving part 5 moves along sliding hole 111, make 5 parts of moving part protruding establish at 1 outer just conflict spring bolt connecting piece 3 of handle, with locking handle 1 and spring bolt connecting piece 3, rotate handle 1 and rotate in order to drive spring bolt connecting piece 3, and then drive the spring bolt rotation and realize unblanking.

In this embodiment, the NFC antenna may further be connected to a rectification output device to output an operating current of the driving mechanism 2, and the operating current enables the driving mechanism 2 to operate.

With continued reference to fig. 2, the drive mechanism 2 may include: a drive motor 21 and a gear box 22; wherein the gearbox 22 is connected with the drive motor 21. Specifically, the input end of the gear box 22 may be connected to the output shaft of the driving motor 21, and the output end of the gear box 22 may be connected to the squeezing wheel 4, that is, the squeezing wheel 4 may be disposed on the output shaft of the gear box 22, so as to adjust the power through the gear box 22, so that when the driving motor 21 drives each time, the squeezing wheel 4 can rotate 90 ° correspondingly, that is, the squeezing wheel 4 rotates one turn and needs to drive the driving motor 21 four times, and two cycles of the moving member 5 between the clamping position and the non-clamping position are sequentially realized; the clamping position is that one part of the movable piece 5 is accommodated in the sliding hole 111, and the other part of the movable piece is abutted against the inner wall of the bolt connecting piece 3 or accommodated in an accommodating structure of the bolt connecting piece 3, namely, the bolt connecting piece 3 and the handle 1 are locked, so that the synchronous rotation between the two is realized; the non-clamping position is that the movable part 5 is partially accommodated in the sliding hole 111, and the other part is accommodated in the groove 42 of the extrusion wheel 4, so as to realize the idling of the handle 1; of course, the squeezing wheel 4 can rotate at other angles each time the driving motor 21 runs, and the squeezing wheel is adapted to the structure of the squeezing wheel 4, which is not limited in this embodiment. Wherein, the bottom of the driving motor 21 is provided with a current pin (not shown in the figure), and the current pin communicates with the NFC antenna through a pole contact of the current pin and supplies power to the driving motor 21 through the NFC antenna.

With continued reference to fig. 2, in the present embodiment, the movable member 5 may be a movable block, and preferably, the movable member 5 is a ball structure, and the diameter of the ball structure is larger than the wall thickness of the side wall of the fixed portion 11, so that the ball structure is partially disposed in the sliding hole 111. In specific implementation, the number of the movable members 5 may be one or more, and preferably, the number of the movable members 5 may be adapted to the structure of the extrusion wheel 4, for example, the number of the movable members 5 in this embodiment is two and is adapted to the number of the protrusions 41 of the extrusion wheel 4, so that when each protrusion 41 rotates to a position corresponding to the movable member 5, the movable member 5 may be pushed to realize locking between the latch connecting member 3 and the handle 1, and the arrangement of the plurality of movable members 5 may increase the stability of the locking action. The depth of the receiving structure and the depth of the groove 42 on the fixing portion 11 are smaller than the diameter of the ball structure, so as to prevent the ball structure from being completely clamped in the receiving structure or the groove 42.

With continued reference to fig. 3-4, the handle 1 includes: a case 12 and a lid 13; wherein the cover 13 is detachably connected to the housing 12. Specifically, at least one end of the housing 12 is an open end, so as to assemble and disassemble parts such as the driving mechanism 2 and the NFC antenna, which are disposed in the storage bin surrounded by the housing 12 and the cover 13; the cover 13 is detachably connected to the open end (the left lower end as shown in fig. 3) of the housing 12, so as to facilitate replacement and maintenance of internal components, and of course, the housing 12 and the cover 13 may also be fixedly connected, which is not limited in this embodiment. Preferably, the fixing portion 11 is disposed at a first end (an upper end as shown in fig. 3) of the housing 12, and a second end (a lower end as shown in fig. 3) of the housing 12 is an open end, and a plum blossom-shaped rotating portion 121 is disposed at an end of the housing 12 close to the cover 13, that is, at a position of the housing 12 close to the open end, along a circumferential direction of the housing 12, so as to rotate the housing 12 to realize rotation of the handle 1, and further to realize unlocking; wherein, the quincunx rotating portion 121 is disposed along the circumferential direction of the housing 12.

With continued reference to fig. 3 to 4, the housing 12 is provided with a plurality of fastening grooves (not shown) along the circumferential direction thereof, and the cover 13 is provided with fastening posts 131 which are arranged corresponding to the fastening grooves one by one and detachably inserted into the fastening grooves. Specifically, one or more fastening columns 131 may be provided, and preferably, at least three fastening columns 131 are provided and are uniformly arranged along the circumferential direction of the cover 13, so as to improve the fastening stability between the housing 12 and the cover 13; the fastening column 131 can be detachably inserted into the fastening groove, and certainly, the fastening column 131 can also be directly inserted into the fastening groove to be fixedly fastened in the fastening groove, so as to realize the fixed connection between the housing 12 and the cover 13.

Referring to fig. 5 to 6, a preferred structure of the extrusion wheel provided by the embodiment of the present invention is shown. As shown in the figure, the extrusion wheel 4 is provided with a protrusion 41 protruding in the circumferential direction for extruding the movable element 5, so that the movable element 5 is partially disposed outside the handle 1 and abuts against the latch bolt connector 3, and the other part is embedded in the sliding hole 111. Specifically, the pressing wheel 4 may be a cam fixed to the output shaft of the gear box 22, and the cam has a protruding protrusion 41, so that the cam rotates synchronously with the output shaft of the gear box 22 and drives the protrusion 41 to rotate, so that the protrusion 41 rotates to a position corresponding to the sliding hole 111 to push the movable member 5 to move. Preferably, the extrusion wheel 4 is further provided with a groove 42 for abdicating the moving member 5, so that part of the moving member 5 is arranged at the groove 42, and the other part of the moving member 5 is embedded in the sliding hole 111, so as to avoid interference between the moving member 5 and the bolt connecting member 3, and unlock between the handle 1 and the bolt connecting member 3 is realized; further preferably, one side of the protrusion 41 is provided with a guide surface 411 for gradually pushing the movable member 5 until the movable member 5 is partially disposed outside the handle 1 and abuts against the latch bolt connecting member 3, and the other part is embedded in the sliding hole 111; the other side of the protrusion 41 is connected with the groove 42; the guide surface 411 may be an arc transition surface, and the distance from each point on the arc transition surface to the axis of the extrusion wheel 4 gradually increases from the position far away from the protrusion 41 to the position connecting the protrusion 41.

Referring to fig. 7 to 8, a preferred structure of the latch bolt connector according to the embodiment of the present invention is shown. As shown in the figure, one end of the bolt connector 3 may be provided with a bolt connecting portion 31, and the other end thereof is provided with a fixing sleeve hole 32. Specifically, the bolt may be sleeved on the bolt connecting portion 31, and the bolt connecting portion 31 may further be provided with a mounting hole 311 to fixedly connect the bolt to the bolt connecting portion 31 through a connecting member such as a screw. The bolt connecting piece 3 is rotatably sleeved on the fixing part 11 through the fixing sleeve hole 32 so as to realize the rotatable connection between the handle 1 and the bolt connecting piece 3; preferably, the inner wall of the fixed sleeve hole 32 may be concavely provided with a receiving structure 321, the size of which is smaller than the outer size of the movable member 5, so that it can be only partially received in the receiving structure 321, i.e. so that the movable member 5 can be partially received in the receiving structure 321 and the other part is received in the sliding hole 111; in the present embodiment, the movable member 5 is a ball structure, the receiving structure 321 is a cambered surface structure, and the depth of the receiving structure 321 is smaller than the diameter of the movable member 5, so as to partially receive the ball structure, and at the same time, the ball structure can be guided, so that the ball structure can move back to be partially received in the sliding hole 111, and the other part is received in the groove 42 of the cam. The receiving structure 321 may be disposed along the circumferential direction of the fixing sleeve hole 32, so that the movable member 5 is partially received in the receiving structure 321.

The working principle of the passive NFC lock is as follows: the lockset is initially in a locked state, meanwhile, when the driving mechanism 2 does not work, the moving part 5 is partially accommodated in the sliding hole 111, the other part is accommodated in the groove 42 of the extrusion wheel 4, and the bolt connecting piece 3 can freely rotate relative to the fixed part 11, namely, the handle 1 idles, namely, when the handle 1 is rotated, unlocking cannot be realized; after equipment with NFC chip, for example the cell-phone is close to the NFC antenna in handle 1, the NFC antenna carries out authentication, if verify successfully, then produce the electric energy in order to supply power to actuating mechanism 2, actuating mechanism 2 drive extrusion wheel 4 rotates, extrusion wheel 4 can promote moving part 5 (move left as shown in fig. 2 left moving part 5), make moving part 5 partly hold in sliding hole 111, another part contradicts the inner wall of spring bolt connecting piece 3 or holds in the holding structure of spring bolt connecting piece 3, make fixed connection between spring bolt connecting piece 3 and the fixed part 11, locking spring bolt connecting piece 3 and handle 1 promptly, so that through rotating handle 1, drive spring bolt connecting piece 3 synchronous rotation along with it, and then drive the spring bolt and rotate, realize unblanking. Of course, when this passive NFC lock is in the state of unblanking, after equipment that has the NFC chip, for example, the cell-phone is close to the NFC antenna in handle 1, the NFC antenna carries out authentication, if verify successfully, then produce the electric energy in order to supply power to actuating mechanism 2, actuating mechanism 2 drive extrusion wheel 4 rotates, so that the recess 42 of extrusion wheel 4 aligns sliding hole 111, can be connected with the piece that resets between spring bolt connecting piece 3 and the handle 1, so that under the effect that resets, drive spring bolt connecting piece 3 rotates, so as to promote moving part 5, make partly hold in sliding hole 111, the recess 42 of extrusion wheel 4 is held to another part, spring bolt connecting piece 3 and spring bolt reset to the locking state, and then realize unblanking and shutting action.

To sum up, the passive NFC lock that this embodiment provided, through setting up the NFC antenna in handle 1 inside, when the equipment that has the NFC chip externally is close to, carry out authentication and produce the electric energy in order to supply power to actuating mechanism 2, rotate with driving extrusion wheel 4, promote moving part 5 so that 5 parts of moving part are protruding to be established and lock handle 1 and spring bolt connecting piece 3 outside handle 1, and then drive spring bolt connecting piece 3 through handle 1 and rotate, thereby realize unblanking. Compared with the prior art, the passive NFC lock avoids the arrangement of a power supply, avoids the installation, maintenance and replacement of the power supply, solves the troubles and uncertainty caused by battery installation, battery maintenance, battery replacement and the like, can reduce the cost and can be used for a long time; meanwhile, when no power supply exists, the passive NFC lock is safe to store after being produced, a live battery has the possibility of causing fire, the passive NFC lock is safe to transport after being produced, and the battery is not beneficial to air transportation.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A passive NFC lock, comprising: the NFC antenna is arranged on the handle; wherein the content of the first and second substances,

the driving mechanism and the NFC antenna are both arranged inside the handle, the driving mechanism is connected with the NFC antenna, and an output shaft of the driving mechanism is provided with an extrusion wheel;

one end of the bolt connecting piece is rotatably sleeved outside the fixing part of the handle, and the other end of the bolt connecting piece is used for connecting a bolt;

the side wall of the fixed part is provided with a sliding hole, and the inside of the fixed part is provided with a moving part which is partially embedded in the sliding hole;

when equipment with an NFC chip outside the NFC antenna is close to the NFC antenna, authentication is carried out, electric energy is generated to supply power to the driving mechanism, so that the extrusion wheel is driven to rotate, the part, abutted against the extrusion wheel, of the extrusion wheel is convexly arranged on the movable part inside the handle, the movable part moves along the sliding hole, the part, abutted against the spring bolt connecting piece, of the movable part is convexly arranged outside the handle, the movable part is abutted against the spring bolt connecting piece, the handle is locked with the spring bolt connecting piece, the handle rotates to drive the spring bolt connecting piece to rotate, and then the spring bolt is driven to rotate to achieve unlocking.

2. The passive NFC lock of claim 1,

the circumferential direction of the extrusion wheel is convexly provided with a bulge for extruding the movable piece, so that part of the movable piece is arranged outside the handle and is abutted against the bolt connecting piece, and the other part of the movable piece is embedded in the sliding hole;

the extrusion wheel is further provided with a groove used for yielding the moving part, so that the moving part is partially arranged at the groove, and the other part of the moving part is embedded in the sliding hole.

3. The passive NFC lock of claim 2,

one side of the bulge is provided with a guide surface for gradually pushing the moving piece, and the other side of the bulge is connected with the groove;

the guide surface is an arc transition surface, and the distance from each point on the arc transition surface to the axis of the extrusion wheel is gradually increased from the position far away from the bulge to the position connected with the bulge.

4. A passive NFC lock according to any of claims 1 to 3 wherein said handle comprises: the casing and the lid that detachably connect.

5. The passive NFC lock of claim 4,

the cover body is provided with a plurality of clamping grooves along the circumferential direction of the cover body, and the cover body is provided with clamping columns which are in one-to-one correspondence with the clamping grooves and detachably inserted into the clamping grooves.

6. The passive NFC lock of claim 4,

the end part of the shell, which is close to the cover body, is provided with a plum blossom-shaped rotating part along the circumferential direction of the shell.

7. A passive NFC lock according to any one of claims 1 to 3,

one end of the spring bolt connecting piece is provided with a spring bolt connecting part, and the other end of the spring bolt connecting piece is provided with a fixing sleeve arranging hole for rotatably arranging the spring bolt connecting part on the fixing part.

8. The passive NFC lock of claim 7,

the inner wall of the fixed sleeving hole is concavely provided with an accommodating structure, so that the moving part is partially accommodated in the accommodating structure.

9. A passive NFC lock according to any one of claims 1 to 3,

the moving part is of a ball structure, and the diameter of the moving part is larger than the wall thickness of the side wall of the fixing part, so that the ball structure is partially arranged in the sliding hole.

10. A passive NFC lock according to any one of claims 1 to 3,

the movable parts are multiple and are uniformly arranged along the circumferential direction of the handle.

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