Magnetic linkage structure and door lock

Abstract

The utility model discloses a magnetic attraction linkage structure and a door lock. The magnetic attraction linkage structure comprises a pipe base and an outer door handle. A shaft element is further arranged, a plug connector is arranged at the end, corresponding to the outer door handle, of the shaft element, a linkage piece is slidably installed in the outer door handle, a driving assembly is further arranged, and the linkage piece is driven by the driving assembly to be provided with a first position in butt joint with the plug connector to achieve synchronous rotation and a second position separated from the plug connector and idling relative to the plug connector. The driving assembly comprises a motor fixed in the outer door handle and a speed reduction assembly, the motor is in transmission connection with the speed reduction assembly, and an output shaft of the speed reduction assembly and the linkage piece are coaxially arranged; a first magnetic attraction set is arranged on the linkage piece, a second magnetic attraction set capable of being in homopolar repulsion and heteropolar attraction with the first magnetic attraction set is arranged on an output shaft of the speed reduction assembly, the magnetic pole state of the second magnetic attraction set is adjusted through the driving assembly, so that the plug connector and the linkage piece are in butt joint or separated, an operation knob does not need to be arranged on the handle, and operation is convenient. The whole door lock is simpler and more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, and in particular to a magnetic attraction linkage structure and a door lock. Background Art

[0002] The most common existing door lock is a handle door lock, and the anti-lock structure of the handle door lock is generally designed in the lock body. The anti-lock structure arranged in the lock body locks the lock tongue so that the lock tongue cannot be retracted from the buckle box on the door frame into the lock body, thereby realizing the anti-lock of the door lock; the anti-lock knob and lock core of the existing handle door lock that drive the anti-lock structure to lock or unlock are generally independently arranged outside the handle, resulting in the overall appearance of the door lock being not simple and beautiful. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a magnetic attraction linkage structure and a door lock.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic linkage structure, comprising a tube seat and an outer door handle, the outer door handle is rotatably arranged on the tube seat; an axis element is also provided, which is used to be inserted into the lock body to form an effective connection with the closing mechanism of the lock unit, a plug-in connector is provided at one end of the axis element corresponding to the outer door handle, a linkage member is slidably installed in the outer door handle, a driving component for driving the linkage member to move along the axis element direction is provided in the outer door handle, the linkage member has a first position of docking with the connector to realize synchronous rotation under the drive of the driving component and a second position of separating from the connector and idling relative to the connector, the driving component comprises a motor and a reduction component fixed in the outer door handle, the driving shaft of the motor and the output shaft of the reduction component are staggered and arranged, and the motor is connected to the reduction component in transmission, and the output shaft of the reduction component is coaxially arranged with the linkage member; a first magnetic attraction group is provided on the linkage member, and a second magnetic attraction group that can repel with the same pole and attract with the opposite pole with the first magnetic attraction group is provided on the output shaft of the reduction component, and the magnetic pole state of the second magnetic attraction group can be adjusted by rotating the output shaft.

[0005] As a preferred technical solution of the utility model, a gear box is fixed in the outer door handle, and an installation cavity and a cover plate for closing the installation cavity are provided in the gear box. The reduction assembly includes a gear set rotatably arranged in the installation cavity, one of the gears of the gear set is connected to the output shaft, the driving shaft of the motor is connected to another gear of the gear set, and the driving shaft and the driven shaft are staggered along the length direction of the gear box.

[0006] As a preferred technical solution of the present utility model, a rotating part is fixed or integrally provided on the output shaft of the reduction assembly, the first magnetic attraction group includes at least two first magnetic attraction elements symmetrically arranged on the linkage part, and the magnetic poles of the two first magnetic attraction elements facing the side of the reduction assembly are in opposite directions, and the second magnetic attraction group includes at least two second magnetic attraction elements symmetrically arranged on the rotating part, and the magnetic poles of the two second magnetic attraction elements facing the side of the linkage part are in opposite directions.

[0007] As a preferred technical solution of the present utility model, the linkage member and the rotating part are respectively provided with grooves for embedding the first magnetic element and the second magnetic element on one side close to each other.

[0008] As a preferred technical solution of the utility model, a guide sleeve is fixed in the outer door handle, a guide hole for axial movement of the linkage member is arranged in the guide sleeve, and the circumferential position of the linkage member relative to the guide hole is fixed.

[0009] As a preferred technical solution of the utility model, the inner wall of the guide hole is symmetrically provided with guide grooves, and the outer wall of the linkage member is provided with a guide portion that slidably cooperates with the guide grooves.

[0010] As a preferred technical solution of the utility model, one end of the connector is fixed to the shaft element, and the other end of the connector is provided with a plug-in portion that cooperates with the linkage member, and a plurality of first fan-shaped protrusions are arranged at intervals along the circumferential direction on the outer end surface of the plug-in portion, and a number of second fan-shaped protrusions corresponding to the first fan-shaped protrusions are arranged at intervals along the circumferential direction on the end surface of the linkage member facing the plug-in portion, and when the connector is docked with the linkage member, the first fan-shaped protrusion is inserted between two adjacent second fan-shaped protrusions.

[0011] As a preferred technical solution of the utility model, an emergency unlocking assembly is arranged in the outer door handle, and the emergency unlocking assembly includes a connecting seat fixed in the outer door handle, an adjusting piece is rotatably installed on the connecting seat, a movable plate is slidably matched at the lower end of the connecting seat, an oblong hole is arranged on the movable plate, and the oblong hole is perpendicular to the sliding direction of the movable plate, the lower end of the adjusting piece has an eccentric portion that cooperates with the oblong hole guide, a moving block is arranged at the lower end of the movable plate, and the position of the moving block corresponds to the guide portion, and the outer wall of the guide sleeve is provided with a movable notch for the sliding of the moving block.

[0012] As a preferred technical solution of the utility model, a rotating groove for installing an adjusting member is provided on the connecting seat, two slots are symmetrically provided on the inner wall of the rotating groove, a blind hole is provided on the outer wall of the adjusting member, a spring is placed in the blind hole and a steel ball is provided on the outer end of the spring, a stopper located between the two slots is provided on the inner wall of the rotating groove, an arc-shaped track groove located above the eccentric portion is provided on the lower part of the adjusting member, the steel ball abuts against the inner wall of the slot when the adjusting member rotates to the slot position and one end of the arc-shaped track groove abuts against a side wall of the stopper, a straight slot or a cross slot is provided on the upper end of the adjusting member, and a through hole corresponding to the adjusting member is provided on the outer door handle.

[0013] A door lock comprises the above-mentioned magnetic attraction linkage structure.

[0014] In summary, the beneficial effects of the utility model are as follows: the outer door handle is connected or separated with the plug-in component through the linkage, so that the outer door handle and the shaft element rotate synchronously or the outer door handle rotates idly relative to the shaft element. When anti-locking is required, the magnetic poles of the first magnetic attraction group on the linkage and the second magnetic attraction group on the output shaft of the reduction assembly are opposite, and the linkage is directly or indirectly attracted to the output shaft, and there is no linkage relationship between the linkage and the plug-in component. Therefore, when the outer door handle rotates, it is in an idling state, and cannot drive the shaft element to rotate, and cannot be unlocked. The same is true in reverse. It is only necessary to adjust the first magnetic attraction group on the linkage to the same magnetic pole as the second magnetic attraction group. The linkage will be subjected to the repulsive force and connect with the plug-in component. At this time, turning the outer door handle can drive the shaft element to rotate. Compared with the traditional external anti-lock knob driving the anti-lock structure to lock or unlock, the present application has a built-in motor and a reduction assembly to adjust the magnetic poles, and uses a magnetic attraction structure to achieve linkage, making the door lock more simple and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 It is a cross-sectional view of AA of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the linkage, connector and drive assembly in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the linkage parts and the connectors in the utility model;

[0020] Figure 6 It is a structural schematic diagram of the linkage member in the utility model;

[0021] Figure 7It is a schematic diagram of the structure of the guide sleeve and the linkage member in the utility model;

[0022] Figure 8 It is a structural schematic diagram of the drive assembly in the utility model;

[0023] Fig. 9 It is a structural schematic diagram of the rotating part in the utility model;

[0024] Fig.10 It is a structural schematic diagram of the emergency unlocking assembly in the utility model;

[0025] Fig.11 It is an exploded view of the emergency unlocking assembly in the utility model;

[0026] Fig.12 It is a structural schematic diagram of the connecting seat in the utility model.

[0027] Figure numerals: 1, pipe seat; 2, outer door handle; 21, shaft element; 22, plug-in component; 221, plug-in portion; 2211, first fan-shaped protrusion; 23, linkage component; 231, first magnetic attraction group; 2311, first magnetic attraction element; 232, guide portion; 233, second fan-shaped protrusion; 24, guide sleeve; 241, guide hole; 242, guide groove; 243, movable notch; 3, drive assembly; 31, motor; 311, driving shaft; 32, reduction assembly; 321, output shaft; 322, The second magnetic attraction group; 3221, the second magnetic attraction element; 323, the gear box; 324, the installation cavity; 325, the cover plate; 326, the gear group; 327, the rotating part; 4, the groove; 5, the emergency unlocking component; 51, the connecting seat; 511, the rotating groove; 512, the slot; 513, the stopper; 52, the adjusting part; 521, the eccentric part; 522, the blind hole; 523, the arc track groove; 53, the moving plate; 531, the oblong hole; 532, the moving block; 54, the spring; 55, the steel ball; 6, the lock body. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0029] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0030] like Figure 1-12A magnetic linkage structure and door lock shown in the figure include a tube seat 1 and an outer door handle 2 (the outer door handle 2 is preferably a cylindrical handle, but is not limited to this shape), the outer door handle 2 is rotatably arranged on the tube seat 1 (a torsion spring can be arranged between the two, and the installation method can refer to the door locks on the market. This is the prior art, so it is not described in detail); an axis element 21 is also provided, which is used to be inserted into the closing mechanism of the lock unit in the lock body 6 to form an effective connection (the lock body 6 is commercially available, this is the prior art, so it is not described in detail), a plug-in connector 22 is provided at one end of the axis element 21 corresponding to the outer door handle 2, a linkage member 23 is slidably installed in the outer door handle 2, and a driving component 3 for driving the linkage member 23 to move along the direction of the axis element 21 is provided in the outer door handle 2. The linkage member 23 has a first position under the drive of the driving component 3 for docking with the connector 22 to achieve synchronous rotation and a second position separated from the connector 22 and idling relative to the connector 22. The driving component 3 includes a motor 31 fixed in the outer door handle 2 and a reduction component 32. The driving shaft 311 of the motor 31 and the output shaft 321 of the reduction assembly 32 are arranged in a staggered manner, and the motor 31 is connected to the reduction assembly 32 in a transmission manner. The output shaft 321 of the reduction assembly 32 is coaxially arranged with the linkage member 23; a first magnetic attraction group 231 is arranged on the linkage member 23, and a second magnetic attraction group 322 that can repel each other with the same pole and attract each other with different poles is arranged on the output shaft 321 of the reduction assembly 32. The magnetic pole state of the second magnetic attraction group 322 can be adjusted by rotating the output shaft 321. In this embodiment, a control circuit board is built in, and the motor 31 is controlled by the control circuit board. This solution does not involve programming improvements. How to control is not the focus of this application, and no specific circuit control schematic diagram is provided. A Bluetooth module can be used to establish communication with a mobile phone APP, and the user can operate it through the mobile phone, or a fingerprint module or a password module can be set on the outer door handle 2. When the fingerprint is correct or the password is correct, an instruction will be issued. At this time, the control circuit board receives the instruction and drives the motor 31 to rotate, thereby adjusting the magnetic pole state of the second magnetic attraction group 322.

[0031] A gear box 323 is fixed in the outer door handle 2, and the gear box 323 is provided with an installation cavity 324 and a cover plate 325 for closing the installation cavity 324. The reduction assembly 32 includes a gear set 326 rotatably arranged in the installation cavity 324, and one of the gears of the gear set 326 is connected to the output shaft 321. The driving shaft 311 of the motor 31 is connected to another gear of the gear set 326. The driving shaft 311 and the driven shaft are staggered along the length direction of the gear box 323. By setting the reduction assembly 32, the output speed can be reduced, the noise can be reduced, and the torque can be increased.

[0032] A rotating part 327 is fixed or integrally provided on the output shaft 321 of the reduction assembly 32, the first magnetic group 231 includes at least two first magnetic elements 2311 symmetrically arranged on the linkage 23, the magnetic poles of the two first magnetic elements 2311 facing the reduction assembly 32 are in opposite directions, the second magnetic group 322 includes at least two second magnetic elements 3221 symmetrically arranged on the rotating part 327, the magnetic poles of the second magnetic elements 3221 facing the linkage 23 are in opposite directions, in this embodiment, the first magnetic element 2311 and the second magnetic element 3221 are magnets, the magnet has two surfaces of N pole and S pole, the outer side surfaces of the two first magnetic elements 2311 on the linkage 23 correspond to the N pole and S pole respectively, the outer side surfaces of the two second magnetic elements 3221 on the rotating part 327 correspond to the N pole and S pole respectively, and the outer side surfaces of the first magnetic element 2311 and the second magnetic element 3221 described in this embodiment are the side surfaces close to each other.

[0033] The linkage member 23 and the rotating portion 327 are provided with grooves 4 on one side close to each other for the first magnetic element 2311 and the second magnetic element 3221 to be embedded.

[0034] A guide sleeve 24 is fixed inside the outer door handle 2 . A guide hole 241 is provided inside the guide sleeve 24 for the axial movement of the linkage member 23 . The linkage member 23 is fixed in a circumferential position relative to the guide hole 241 .

[0035] The inner wall of the guide hole 241 is symmetrically provided with guide grooves 242, and the outer wall of the linkage member 23 is provided with a guide portion 232 that slides with the guide groove 242. The linkage member 23 can only slide along the guide hole 241 and will not rotate circumferentially, ensuring that the linkage member 23 can drive the shaft element 21 to rotate when docking with the connector 22.

[0036] One end of the connector 22 is fixed to the shaft element 21, and the other end of the connector 22 is provided with a connector portion 221 that cooperates with the linkage member 23. The outer end surface of the connector portion 221 is provided with a plurality of first fan-shaped protrusions 2211 spaced apart along the circumferential direction, and the end surface of the linkage member 23 facing the connector portion 221 is provided with a number of second fan-shaped protrusions 233 corresponding to the first fan-shaped protrusions 2211 spaced apart along the circumferential direction. When the connector portion 221 is docked with the linkage member 23, the first fan-shaped protrusion 2211 is inserted between two adjacent second fan-shaped protrusions 233.

[0037] The outer door handle 2 is provided with an emergency unlocking assembly 5, which includes a connecting seat 51 fixed in the outer door handle 2, an adjusting member 52 is rotatably mounted on the connecting seat 51, a moving plate 53 is slidably matched at the lower end of the connecting seat 51, an oblong hole 531 is provided on the moving plate 53, and the oblong hole 531 is perpendicular to the sliding direction of the moving plate 53, an eccentric portion 521 is provided at the lower end of the adjusting member 52 to guide and match the oblong hole 531, and a moving block 532 is provided at the lower end of the moving plate 53. The position of the moving block 532 corresponds to that of the guide portion 232, and an outer wall of the guide sleeve 24 is provided with a movable notch 243 for the sliding of the moving block 532. When the motor 31 fails and emergency unlocking is required, the outer door handle 2 can be forcibly disassembled by turning the adjusting member 52. The eccentric portion 521 rotates in the oblong hole 531, which will drive the moving plate 53 to move toward the shaft element 21, drive the linkage member 23 to dock with the connector 22, and turn the outer door handle 2 to drive the shaft element 21 to rotate so that the lock tongue of the lock body 6 is retracted.

[0038] The connecting seat 51 is provided with a rotating groove 511 for installing the adjusting member 52, and the inner wall of the rotating groove 511 is symmetrically provided with two clamping grooves 512, and the outer wall of the adjusting member 52 is provided with a blind hole 522. A spring 54 is placed in the blind hole 522 and a steel ball 55 is provided at the outer end of the spring 54. A stopper 513 located between the two clamping grooves 512 is provided on the inner wall of the rotating groove 511, and an arc-shaped track groove 523 located above the eccentric portion 521 is provided at the lower part of the adjusting member 52. When the steel ball 55 rotates to the position of the clamping groove 512 with the adjusting member 52, it abuts against the inner wall of the clamping groove 512 and one end of the arc-shaped track groove 523 abuts against a side wall of the stopper 513. A straight groove or a cross groove is provided at the upper end of the adjusting member 52, and a through hole corresponding to the adjusting member 52 is provided on the outer door handle 2 (not shown in the figure), and the arc-shaped track groove 523 cooperates with the stopper 513 to play a role of in-place feedback, and usually the knob of the adjusting member 52 can be turned 180°.

[0039] A door lock, comprising the above-mentioned magnetic attraction linkage structure, can be applied to locks such as ecological locks or handle locks.

[0040] Working principle: The outer door handle 2 is connected or separated with the plug-in component 22 through the linkage 23, so that the outer door handle 2 and the shaft element 21 rotate synchronously or the outer door handle 2 rotates idly relative to the shaft element 21. When reverse locking is required, the first magnetic attraction group 231 on the linkage 23 and the second magnetic attraction group 322 on the output shaft 321 of the reduction assembly 32 have opposite magnetic poles, and the linkage 23 is directly or indirectly attracted to the output shaft 321, and there is no linkage relationship between the linkage 23 and the plug-in component 22. Therefore, when the outer door handle 2 rotates, it is in an idling state, unable to drive the shaft element 21 to rotate, and unable to unlock. The opposite is also true. It is only necessary to adjust the first magnetic group 231 on the linkage part 23 to be the same as the magnetic pole of the second magnetic group 322. The linkage part 23 will be subjected to the repulsive force and connected with the connector 22. At this time, rotating the outer door handle 2 can drive the shaft element 21 to rotate. Compared with the traditional external anti-lock knob driving the anti-lock structure to lock or unlock, the built-in motor 31 and the deceleration component 32 of the present application adjust the magnetic pole and use the magnetic structure to achieve linkage, making the door lock more simple and beautiful.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A magnetic linkage structure, comprising a tube seat (1) and an outer door handle (2), wherein the outer door handle (2) is rotatably arranged on the tube seat (1); and an axis element (21) is also arranged, which is used to be inserted into the closing mechanism of the lock unit in the lock body (6) to form an effective connection, characterized in that: A plug-in connector (22) is arranged at one end of the shaft element (21) corresponding to the outer door handle (2); a linkage member (23) is slidably mounted in the outer door handle (2) and the linkage member (23) rotates with the outer door handle (2); a driving assembly (3) is arranged in the outer door handle (2) for driving the linkage member (23) to move along the shaft element (21); the linkage member (23) has a first position in which it is connected to the plug-in connector (22) to realize synchronous rotation and a second position in which it is separated from the plug-in connector (22) and rotates idly relative to the plug-in connector (22) under the drive of the driving assembly (3); the driving assembly (3) includes an electric motor fixed in the outer door handle (2); A motor (31) and a reduction assembly (32); a driving shaft (311) of the motor (31) and an output shaft (321) of the reduction assembly (32) are arranged in a staggered manner, and the motor (31) and the reduction assembly (32) are transmission-connected; the output shaft (321) of the reduction assembly (32) and a linkage member (23) are coaxially arranged; a first magnetic attraction group (231) is arranged on the linkage member (23); a second magnetic attraction group (322) that can repel each other with the same pole and attract each other with different poles with the first magnetic attraction group (231) is arranged on the output shaft (321) of the reduction assembly (32); and the magnetic pole state of the second magnetic attraction group (322) can be adjusted by rotating the output shaft (321).

2. The magnetic attraction linkage structure according to claim 1, characterized in that: A gear box (323) is fixed in the outer door handle (2), and a mounting cavity (324) and a cover plate (325) for closing the mounting cavity (324) are provided in the gear box (323); the reduction assembly (32) includes a gear set (326) rotatably disposed in the mounting cavity (324), one of the gears of the gear set (326) is connected to the output shaft (321), the driving shaft (311) of the motor (31) is connected to another gear of the gear set (326), and the driving shaft (311) and the driven shaft are staggered along the length direction of the gear box (323).

3. The magnetic attraction linkage structure according to claim 1 or 2, characterized in that: A rotating part (327) is fixed or integrally provided on the output shaft (321) of the reduction assembly (32); the first magnetic attraction group (231) includes at least two first magnetic attraction elements (2311) symmetrically arranged on the linkage member (23); the magnetic poles of the two first magnetic attraction elements (2311) facing the side of the reduction assembly (32) are in opposite directions; the second magnetic attraction group (322) includes at least two second magnetic attraction elements (3221) symmetrically arranged on the rotating part (327); the magnetic poles of the two second magnetic attraction elements (3221) facing the side of the linkage member (23) are in opposite directions.

4. The magnetic attraction linkage structure according to claim 3, characterized in that: The linkage member (23) and the rotating portion (327) are provided with grooves (4) on one side close to each other for the first magnetic attraction element (2311) and the second magnetic attraction element (3221) to be embedded.

5. The magnetic attraction linkage structure according to claim 1, characterized in that: A guide sleeve (24) is fixed inside the outer door handle (2), and a guide hole (241) for the linkage member (23) to move axially is arranged inside the guide sleeve (24), and the linkage member (23) is fixed in a circumferential position relative to the guide hole (241).

6. The magnetic attraction linkage structure according to claim 5, characterized in that: The inner wall of the guide hole (241) is symmetrically provided with guide grooves (242), and the outer wall of the linkage member (23) is provided with a guide portion (232) that is slidably matched with the guide grooves (242).

7. The magnetic attraction linkage structure according to claim 1, 5 or 6, characterized in that: One end of the connector (22) is fixed to the shaft element (21), and the other end of the connector (22) is provided with a connector portion (221) that cooperates with the linkage member (23). The outer end surface of the connector portion (221) is provided with a plurality of first fan-shaped protrusions (2211) at intervals along the circumferential direction, and the end surface of the linkage member (23) facing the connector portion (221) is provided with a number of second fan-shaped protrusions (233) corresponding to the first fan-shaped protrusions (2211) at intervals along the circumferential direction. When the connector portion (221) and the linkage member (23) are connected, the first fan-shaped protrusion (2211) is inserted between two adjacent second fan-shaped protrusions (233).

8. The magnetic attraction linkage structure according to claim 6, characterized in that: An emergency unlocking assembly (5) is arranged in the outer door handle (2), and the emergency unlocking assembly (5) comprises a connecting seat (51) fixed in the outer door handle (2), an adjusting member (52) is rotatably mounted on the connecting seat (51), a movable plate (53) is slidably matched at the lower end of the connecting seat (51), an oblong hole (531) is arranged on the movable plate (53), and the oblong hole (531) is perpendicular to the sliding direction of the movable plate (53), the lower end of the adjusting member (52) has an eccentric portion (521) which is guided and matched with the oblong hole (531), the lower end of the movable plate (53) is provided with a moving block (532), and the position of the moving block (532) corresponds to the guide portion (232), and the outer wall of the guide sleeve (24) is provided with a movable notch (243) for the sliding of the moving block (532).

9. The magnetic attraction linkage structure according to claim 8, characterized in that: The connecting seat (51) is provided with a revolving groove (511) for mounting the adjusting member (52); the inner wall of the revolving groove (511) is symmetrically provided with two clamping grooves (512); the outer wall of the adjusting member (52) is provided with a blind hole (522); a spring (54) is placed in the blind hole (522); a steel ball (55) is provided at the outer end of the spring (54); the inner wall of the revolving groove (511) is provided with a stopper (513) located between the two clamping grooves (512); The lower part of the adjusting member (52) is provided with an arc-shaped track groove (523) located above the eccentric part (521); when the adjusting member (52) rotates to the position of the locking groove (512), the steel ball (55) abuts against the inner wall of the locking groove (512), and one end of the arc-shaped track groove (523) abuts against a side wall of the stopper (513); the upper end of the adjusting member (52) is provided with a straight groove or a cross groove; and the outer door handle (2) is provided with a through hole corresponding to the adjusting member (52).

10. A door lock, characterized in that: It comprises the magnetic attraction linkage structure described in any one of claims 1 to 9.

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