Intelligent lock and knob resetting mechanism thereof

Abstract

The utility model provides an intelligent lock and a knob resetting mechanism thereof, the knob resetting mechanism comprises a panel, a driving structure, a lock cylinder and a tail rod resetting structure, the driving structure can move relative to the panel, the lock cylinder comprises a lock liner and a lock cylinder tail rod which can rotate relative to each other, and the lock liner and the driving structure are connected and rotate synchronously; the tail rod resetting structure is used for driving the lock cylinder tail rod to rotate; a connecting piece for connecting the driving structure and the tail rod resetting structure is arranged between the driving structure and the tail rod resetting structure; a first reset piece is arranged between the panel and the driving structure, a second reset piece is arranged between the tail rod reset structure and the panel, and when the connection of the connecting piece to the driving structure and the tail rod reset structure is removed, the driving structure and the tail rod reset structure are respectively reset under the reset action of the first reset piece and the second reset piece. According to the invention, the user does not need to manually return the knob to the original position, and the use convenience is improved.

Description

Technical Field

[0001] This application relates to the field of smart lock technology, and in particular to a smart lock and its knob reset mechanism. Background Technology

[0002] Most existing door locks use a knob mechanism that requires turning the knob 90° clockwise or counterclockwise to unlock, and 90° counterclockwise to lock. However, currently available knobs often remain in the rotated position after unlocking or locking, failing to return to their initial position. This makes it difficult for users to control whether the knob has been turned to the correct position, resulting in inconvenience. Utility Model Content

[0003] The purpose of this application is to provide a smart lock and its knob reset mechanism that can restore the knob to its original position, providing convenience for users.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] In one aspect, this application relates to a knob reset mechanism, which includes a panel, a drive structure, a lock cylinder, and a tail rod reset structure. The drive structure is rotatable relative to the panel. The lock cylinder includes a lock cylinder shell and a lock cylinder tail rod that are rotatable relative to each other. The lock cylinder shell is connected to the drive structure and the two rotate synchronously. The tail rod reset structure is used to drive the lock cylinder tail rod to rotate. A connecting member is provided between the drive structure and the tail rod reset structure to connect the two.

[0006] A first reset member is provided between the panel and the drive structure, and a second reset member is provided between the tail rod reset structure and the panel. When the connection between the connecting member and the drive structure and the tail rod reset structure is released, the drive structure returns to its original position under the restoring action of the first reset member, and the tail rod reset structure returns to its original position under the restoring action of the second reset member.

[0007] Further configuration: Both the first reset member and the second reset member include torsion springs.

[0008] Further configuration: The drive structure includes a synchronously rotating knob, a knob base, and a knob connector, wherein the knob connector is provided with a protrusion for abutting against the first reset member.

[0009] Further features: The knob joint is provided with a sliding groove, the tail rod reset structure is provided with a slot at the position corresponding to the sliding groove, and the connector includes a clutch pin that is slidably disposed in the sliding groove.

[0010] Further configuration: The slide groove is provided with a spring-loaded component that connects to the clutch pin to disengage the clutch pin from the slot and restore it to its original position.

[0011] Further configuration: The panel is equipped with an electronic clutch for receiving external control commands to push the clutch pin into the slot.

[0012] Further configuration: The tail rod reset structure includes a reset turntable, and the reset turntable has a rotating hole in the middle for the lock cylinder tail rod to pass through.

[0013] Further configuration: The rotating hole is configured as an irregularly shaped hole formed by connecting two fan-shaped holes with their corners connected and arranged symmetrically at the center. The rotating hole includes a first side, a second side, a third side, and a fourth side. The first side and the second side are arranged adjacent to each other, and the third side and the fourth side are arranged adjacent to each other.

[0014] Further configuration: The lock cylinder tail rod can rotate more than 90° relative to the reset turntable within the rotating hole.

[0015] Further configuration: The reset turntable is provided with a boss that abuts against one end of the second reset component.

[0016] Further configuration: The knob connector is provided with a left screw hole and a right screw hole, the reset disc is provided with a baffle, and a reversing screw that abuts against the baffle is threaded into the left screw hole or the right screw hole to limit the rotation direction of the tail rod reset structure relative to the drive structure.

[0017] Further features include a key, and the lock cylinder has a keyhole for inserting the key to allow the lock cylinder and the lock cylinder tail rod to rotate synchronously.

[0018] Further configuration: The drive structure is rotatable relative to the panel.

[0019] As a second aspect, this application relates to a knob reset mechanism, which includes a panel, a drive assembly, and a transmission assembly. Both the drive assembly and the transmission assembly are rotatable relative to the panel. The drive assembly is connected to the transmission assembly to control the extension and retraction of the latch by controlling the transmission assembly. The drive assembly is also provided with a reset assembly for returning to its original position after rotation.

[0020] Further configuration: Both the drive assembly and the transmission assembly can rotate relative to the panel.

[0021] Further configuration: The rotation angle of the drive assembly that causes the transmission assembly to rotate to control the extension and retraction of the latch is 90°.

[0022] Further configuration: The drive assembly includes a drive structure and a tail rod reset structure. The reset assembly includes a third reset component. The drive structure and the tail rod reset structure are respectively provided with a first push block and a second push block for connecting with the third reset component.

[0023] As a third aspect, this application relates to a smart lock, which includes a lock housing, a drive mechanism, and a lock body. The drive mechanism is a knob reset mechanism as described above, and the knob reset mechanism is installed inside the lock housing. The knob reset mechanism is connected to the lock body to control the extension and retraction movement of the lock body.

[0024] Compared with existing technologies, the solution in this application has the following advantages:

[0025] 1. In the knob reset mechanism involved in this application, the drive structure and the tail rod reset structure are independently reset by setting a first reset component and a second reset component, thereby enabling the user to operate the drive structure to open the door lock.

[0026] 2. The knob reset mechanism of this application achieves knob reset by adding a torsion spring and a clutch connection, which simplifies the existing knob reset structure, improves the durability and reliability of the smart lock, and the knob reset structure of this application is simple, which is conducive to the miniaturization of smart locks.

[0027] 3. The smart lock involved in this application, by applying a knob reset mechanism to the smart lock, can ensure that the knob returns to its initial position after each use, without requiring the user to manually reset it, thus improving the convenience of use.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a front structural diagram of one embodiment of the knob reset mechanism of this application;

[0031] Figure 2 This is a schematic diagram of the rear structure of one embodiment of the knob reset mechanism of this application;

[0032] Figure 3 This is a schematic diagram of the internal structure of one embodiment of the knob reset mechanism of this application;

[0033] Figure 4 This is an exploded view of one embodiment of the knob reset mechanism of this application;

[0034] Figure 5 This is an exploded view of the structure of one embodiment of the knob reset mechanism of this application from another perspective;

[0035] Figure 6This is a schematic diagram of the drive structure in one embodiment of the knob reset mechanism of this application;

[0036] Figure 7 This is a schematic diagram of the knob connector in one embodiment of the knob reset mechanism of this application;

[0037] Figure 8 This is a schematic diagram of the reset dial in one embodiment of the knob reset mechanism of this application;

[0038] Figure 9 This is a schematic diagram of another embodiment of the knob reset mechanism of this application;

[0039] Figure 10 This is a schematic diagram of the structure of one embodiment of the smart lock of this application;

[0040] Figure 11a This is a schematic diagram showing the initial positions of the reset turntable and the lock cylinder tail rod in the locked state in one embodiment of the smart lock of this application;

[0041] Figure 11b This is a schematic diagram illustrating how the reset turntable pushes the lock cylinder tail rod to the unlocking position in one embodiment of the smart lock of this application;

[0042] Figure 11c This is a schematic diagram illustrating the reset turntable returning to its initial position in an unlocked state, according to one embodiment of the smart lock of this application.

[0043] Figure 11d This is a schematic diagram showing the reset dial pushing the lock cylinder tail rod to the locked position in one embodiment of the smart lock of this application.

[0044] In the diagram, 1. Panel; 11. Limiting block; 2. Drive structure; 21. Knob; 22. Knob base; 23. Knob connector; 231. Slide groove; 232. Protrusion; 233. Left screw hole; 234. Right screw hole; 235. First push block; 3. Lock cylinder; 31. Lock core; 32. Lock cylinder tail rod; 33. Lock hole; 4. Tail rod reset structure; 41. Reset turntable; 411. Boss; 412. Second push block; 42. Baffle plate; 43. Rotary hole; 43a. First side surface; 43b. Second side surface; 43c. Third side surface; 43d. Fourth side surface; 44. Slot; 5. First reset component; 6. Second reset component; 71. Electronic clutch; 72. Clutch pin; 73. Spring-loaded component; 8. Third reset component; 9. Reversing screw; 1000. Lock case; 2000. Lock body; 2001. Lock tongue; 3000. Knob reset mechanism. Detailed Implementation

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0046] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0047] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "connection" can refer to a direct connection or an indirect connection via intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description.

[0048] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish between devices, modules or units, and are not intended to limit these devices, modules or units to necessarily be different devices, modules or units, nor are they intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0049] To address the common problem of knobs in smart door locks failing to return to their initial position after opening / closing the door, this application provides a knob reset mechanism, which includes a panel, a drive assembly, and a transmission assembly. Both the drive assembly and the transmission assembly are movable relative to the panel. The drive assembly is connected to the transmission assembly to control the extension and retraction of the bolt by controlling the transmission assembly. The drive assembly also includes a reset component for returning the bolt to its original position after rotation.

[0050] Preferably, in this embodiment, the drive component and the transmission component are configured to rotate relative to the panel. In this case, the knob reset structure of this application can restore the drive component to its original position by rotating the drive component and causing the transmission component to rotate, thereby eliminating the need for the user to manually reset the drive component and improving the convenience of use.

[0051] In one specific embodiment, please refer to Figures 1 to 11dThe knob reset mechanism of this application includes a panel 1, a drive assembly, and a transmission assembly. The panel 1 is fixed to the door panel on which the smart lock is installed. The drive assembly includes a drive structure 2 and a tail rod reset structure 4. The transmission assembly includes a lock cylinder 3. The drive structure 2 is mounted on the panel 1 and can move relative to the panel 1. Preferably, the drive structure 2 in this embodiment is rotatable relative to the panel. The lock cylinder 3 includes a lock cylinder 31 and a lock cylinder tail rod 32 that can rotate relative to each other. The lock cylinder 31 is connected to the drive structure 2 and can rotate synchronously. The lock cylinder tail rod 32 is connected to the lock tongue 2001 to control the opening and closing of the door lock. The tail rod reset structure 4 is sleeved on the lock cylinder tail rod 32, and the tail rod reset structure 4 and the lock cylinder tail rod 32 are used to drive the lock cylinder tail rod 32 to rotate. Furthermore, a connecting member is provided between the drive structure 2 and the tail rod reset structure 4 to connect the two so that the lock cylinder 31 and the lock cylinder tail rod 32 rotate synchronously. When the connecting member is disconnected from the drive structure 2 and the tail rod reset structure 4, the tail rod reset structure 4 can rotate relative to the drive structure 2.

[0052] This application provides a first reset member 5 between the panel 1 and the drive structure 2. When the drive structure 2 rotates relative to the panel 1, the first reset member 5 undergoes elastic deformation and stores force to provide a restoring force for the drive structure 2 to return to its initial position. A second reset member 6 is provided between the tail rod reset structure 4 and the panel 1. After the tail rod reset structure 4 rotates with the lock cylinder tail rod 32, the second reset member 6 undergoes elastic deformation and stores force to provide a restoring force for the tail rod reset structure 4 to return to its initial position. The first reset member 5 and the second reset member 6 serve as reset components mounted on the drive assembly. After the drive structure 2 and the tail rod reset structure 4 are released from the connection constraint of the connecting member, the drive structure 2 and the tail rod reset structure 4 can respectively return to their original positions under the action of the first reset member 5 and the second reset member 6, without requiring the user to manually reset the drive structure 2. This facilitates subsequent operation of the drive structure 2 and improves the user experience.

[0053] Specifically, the drive structure 2 of this application includes a knob 21, a knob base 22, and a knob connector 23, which are fixedly connected by screws. The lock cylinder 3's cylinder 31 is installed between the knob 21 and the knob base 22, so that the cylinder 31 can rotate synchronously with the drive structure 2. The lock cylinder tail rod 32 passes through the knob connector 23 and can rotate relative to the drive structure. Therefore, this application needs to make the drive structure 2 rotate, and under the connection of the connector, the tail rod reset structure 4 rotates with the drive structure 2 to drive the lock cylinder tail rod 32 to rotate to control the extension and retraction of the bolt, thereby realizing the opening and closing of the door lock.

[0054] It should be noted that this application does not limit the specific structural form of the knob 21, such as it can be set as a dial, handle, etc.

[0055] The tail rod reset structure 4 of this application includes a reset turntable 41. The reset turntable 41 has a rotating hole 43 in the middle for the lock cylinder tail rod 32 to pass through. The lock cylinder tail rod 32 cooperates with the rotating hole 43 so that when the reset turntable 41 rotates under the drive of the drive structure 2, the lock cylinder tail rod 32 can be driven to rotate synchronously.

[0056] The tail rod reset structure 4 is detachably connected to the drive structure 2 via a connector. In this embodiment, the connector includes a clutch pin 72. The knob joint 23 is provided with a groove 231. The clutch pin 72 is slidably disposed in the groove 231 and can move relative to the knob joint 23. The reset turntable 41 is provided with a slot 44 at the position corresponding to the groove 231. Thus, the drive structure 2 and the tail rod reset structure 4 are connected by inserting the clutch pin 72 into the slot 44.

[0057] In this embodiment, an electronic clutch 71 is installed on the panel 1. When the electronic clutch 71 receives an external unlocking command, the push rod of the electronic clutch 71 pushes the clutch pin toward the slot 44, so that the drive structure 2 is connected to the tail rod reset structure 4, thereby controlling the movement of the lock body through the knob 21. The external unlocking command includes, but is not limited to, biometric authentication information, card swipe information, password information, etc.

[0058] Meanwhile, a spring-loaded component 73 connected to the clutch pin is provided in the slide groove 231. The spring-loaded component 73 enables the clutch pin 72 to disengage from the slot 44 and return to its original position when it is not pushed by the electronic clutch 71. The drive structure 2 and the tail rod reset structure 4 are separated from each other, so that the drive structure 2 returns to its initial position under the elastic recovery action of the first reset component 5, while the tail rod reset structure 4 returns to its initial position under the elastic recovery action of the second reset component 6. In this embodiment, the spring-loaded component 73 is a compression spring, one end of which is connected to the clutch pin 72, and the other end is connected to the knob joint 23.

[0059] The push rod of the electronic clutch 71 will return to its original position after a set time, and the clutch pin 72 will disengage from the slot 44 under the action of the compression spring. At this time, the unlocking operation can no longer be achieved through the drive structure 2.

[0060] Furthermore, in this embodiment, both the first reset member 5 and the second reset member 6 are torsion springs. The two ends of the torsion spring have legs extending radially outwards. These legs are not fixedly connected to the panel 1. A limiting block 11 is provided on the panel 1, located between the two legs of the torsion spring. When the torsion spring rotates relative to the panel 1, one of its legs abuts against the limiting block 11 and cannot rotate. This leg serves as the fixed end of the torsion spring, while the other leg serves as the movable end and can rotate with the drive structure 2 or the tail rod reset structure 4. Specifically, the knob connector 23 of the drive structure 2 has a protrusion 232 for abutting against the leg of the torsion spring, which is the first reset member 5. The protrusion 232 is located between the two legs of the first reset member 5. When the drive structure 2 rotates, one leg of the first reset member 5 is blocked by the limiting block 11 to serve as a fixed end, while the other leg, as the movable end, is pushed by the protrusion 232, causing the first reset member 5 to undergo elastic deformation. Similarly, the reset turntable 41 of the tail rod reset structure 4 is provided with a boss 411 for abutting against the support leg of the torsion spring that serves as the second reset member 6. The boss 411 is located between the two support legs of the second reset member 6. When the reset turntable 41 rotates, one end of the support leg of the second reset member 6 abuts against the limiting block 11 and is fixed relative to the panel 1, while the other end is pushed by the boss 411 to cause the second reset member 6 to undergo elastic deformation.

[0061] It should be noted that in this embodiment, when the lock cylinder tail rod 32 is in a vertical state, the lock tongue 2001 is in an extended state; while when the lock cylinder tail rod 32 is in a horizontal state, the lock tongue 2001 is in a retracted state. Thus, the vertical and horizontal states of the lock cylinder tail rod 32 can be adjusted by the drive structure 2 in conjunction with the tail rod reset structure 4 to realize the opening and closing of the door lock.

[0062] In another embodiment, please refer to Figure 9In this embodiment, the reset component can also be configured as a third reset element 8. The third reset element 8 is preferably a torsion spring, with legs at both ends radially arranged. In this embodiment, the knob connector 23 extends outward to form a first push block 235, and the reset turntable 41 extends outward to form a second push block 412. Both the first push block 235 and the second push block 412 are located between the two legs of the third reset element 8, and both abut against the same leg of the third reset element 8. When the connector connects the knob connector 23 and the reset turntable 41, the knob connector 23 and the reset turntable 41 rotate synchronously. The first push block 235 and the second push block 412 jointly push the third reset element 8, as the movable end of the leg, to rotate in the direction of rotation of the drive structure 2. When the external force applied to the drive structure 2 is removed, the first push block 235 and the second push block 412, under the elastic recovery action of the third reset element 8, respectively return the knob connector 23 and the reset turntable 41 to their original positions. When the knob connector 23 and the reset dial 31 are not connected, turning the knob 21 to unlock will cause the knob connector 23 to rotate. Simultaneously, the first push block 235 on the knob connector 23 pushes the support leg of the third reset member 8, causing the third reset member 8 to undergo elastic deformation. When the external force applied to the knob 21 is released, the first push block 235, under the restoring action of the third reset member 8, returns the knob connector 23 to its original position. During this process, the reset dial 41 remains in its original position, preventing the door lock from opening. Therefore, in this embodiment, the knob connector 23 and the reset dial 41 can also achieve reset via the same torsion spring, resulting in a simple structure and convenient installation.

[0063] This application also includes a reversing screw 9 connected to the knob connector 23, and a baffle 42 on the reset disc 41 that abuts against the reversing screw 9. Therefore, the reversing screw 9 restricts the relative rotation direction between the knob connector 23 and the reset disc 41. Specifically, the knob connector 23 can rotate relative to the reset disc 41 in a direction away from the baffle 42, while the reversing screw 9 rotates towards the baffle 42, thus pushing the baffle 42 to achieve synchronous rotation between the knob connector 23 and the reset disc 41. Simultaneously, the knob connector 23 has a left screw hole 233 and a right screw hole 234, allowing the reversing screw 9 to be installed according to the opening direction of the door lock. This ensures that when the door is unlocked by turning, without a connecting piece between the knob connector 23 and the reset disc 41, the knob connector 23 can rotate relative to the reset disc 41, preventing the reset disc 41 from rotating to unlock. When the knob is turned in the opposite direction to the unlocking direction to lock, the reversing screw 9 on the knob joint 23 abuts against the baffle 42 on the reset disc 41 to push the reset disc 41 to rotate in the opposite direction, thereby achieving the purpose of locking.

[0064] Furthermore, to meet the different opening direction needs of users, when switching between left-opening and right-opening modes of the door lock, it is necessary to simultaneously change the screw hole installation position of the reversing screw 9 on the knob connector 23, and replace the reset disc 41 with different directions of the rotating hole 43, thereby enabling the switching of the door lock opening direction. In the tail rod reset structure corresponding to the left-opening or right-opening mode of the door lock, the rotating hole 43 structures of the two opening modes are mirror-symmetrical to ensure that the lock cylinder tail rod 32 can be driven to rotate through the tail rod reset structure 4, thereby achieving the purpose of opening and closing the door.

[0065] In summary, the knob reset mechanism of this application uses a torsion spring as the reset element to achieve independent reset of the drive structure 2 and the tail rod reset structure 4, which allows users to easily operate the drive structure 2 to control the opening and closing of the door lock. The operation is simple and the convenience of use is improved.

[0066] In addition, the lock cylinder 31 is also provided with a lock hole 33 that connects to the lock cylinder tail rod 32. When the drive structure 2 and the tail rod reset structure 4 cannot be connected by the electronic clutch 71, a key can be inserted into the lock hole 33 to make the lock cylinder 31 and the lock cylinder tail rod 32 rotate synchronously. Then, by turning the key, the lock cylinder 31 and the lock cylinder tail rod 32 can be driven to rotate, so as to achieve the purpose of unlocking.

[0067] This application also relates to a smart lock employing the aforementioned knob reset mechanism 3000. Please refer to... Figure 10 The lock includes a lock housing 1000, a lock body 2000, and a drive mechanism. The drive mechanism is the knob reset mechanism 3000 mentioned above. The knob reset mechanism 3000 is installed inside the lock housing 1000. The lock cylinder tail rod 32 in the knob reset mechanism 3000 is connected to the lock body 2000 and controls the extension and retraction of the lock body 2000 relative to the lock housing 1000 through the knob reset mechanism 3000. The smart lock of this application is installed on the door through the lock housing 1000.

[0068] The end of the lock body 2000 is provided with a bolt 2001 for directly locking in the door lock. Common types of bolts 2001 include oblique bolts and flat bolts. In the knob reset mechanism 3000 used to drive the lock body 2000 to rotate in this application, the structure of the rotating hole 43 of the reset turntable 41 for the lock cylinder tail rod 32 to pass through is also different depending on the type of bolt 2001, so as to meet the usage requirements of different bolts 2001.

[0069] The aforementioned rotating hole 43 can be configured to match the outer contour of the cross-section of the lock cylinder tail rod 32, so as to drive the lock tongue 2001 back to its original position during the process of the tail rod reset structure 4 returning to its original position. This type of rotating hole 43 is suitable for the automatic rebound of the oblique tongue. Alternatively, the rotating hole 43 can be configured as an irregular hole formed by connecting two fan-shaped holes with their corners connected and arranged symmetrically at the center. The hole shape of the rotating hole 43 is similar to the structure of a bow tie, so that the lock cylinder tail rod 32 of the lock cylinder 3 can rotate freely within a certain angle range in the rotating hole 43. This type of rotating hole 43 is suitable for the deadbolt, and the user needs to manually operate it to perform the extension and retraction movement of the lock body 2000.

[0070] Therefore, in other embodiments, the reset turntable 41 can also be configured as a detachably connected turntable and shaft, with the rotating hole 43 located at the center of the shaft. The shaft can be snapped and fixed at the center of the turntable. Meanwhile, the turntable has the same slot 44, boss 411, baffle 42 and other structures as the original reset turntable 41. That is, the rotating hole 43 is separated from the reset turntable 41 by the turntable and shaft in the form of a split structure. Thus, the shaft with rotating holes 43 of different specifications can be replaced according to the different lock tongue usage requirements, further improving the applicability of the smart lock of this application.

[0071] The following describes the unlocking and locking process of the smart lock of this application in detail using the example of a dead tongue.

[0072] When unlocking, the electronic clutch 71 of the knob reset mechanism first identifies the correct verification code (including but not limited to biometric verification information, door card information, password information, etc.), so that the push rod of the electronic clutch 71 can push the clutch pin 72 to insert into the slot 44 of the tail rod reset structure 4, so that the drive structure 2 is connected to the tail rod reset structure 4. Then, the user can manually rotate the knob 21 of the drive structure 2. The knob 21 drives the knob base 22 and the knob connector 23 to rotate synchronously. With the clutch pin 72 connected, the knob connector 23 can drive the reset disc 41 of the tail rod reset structure 4 to rotate synchronously. Then, the reset disc 41 drives the lock cylinder tail rod 32 to rotate. The lock cylinder tail rod 32 is connected to the lock tongue 2001. Under the rotation of the lock cylinder tail rod 32, the lock tongue 2001 will rotate and retract to achieve unlocking. In this embodiment, rotating the knob 21 to 90° can complete the unlocking.

[0073] When the lock is successfully unlocked, the first reset component 5 will drive the knob connector 23 to return to its initial position, and the second reset component 6 will drive the reset disc 41 to return to its initial position. Since the lock cylinder tail rod 32 can rotate relative to the reset disc 41 in the rotating hole 43, when the rotation angle of the lock cylinder tail rod 32 in the rotating hole 43 is greater than 90°, during the process of the reset disc 41 returning to its initial position under the restoring force of the second reset component 6, the lock cylinder tail rod 32 always remains in a horizontal state, while the reset disc 41 rotates relative to the lock cylinder tail rod 32.

[0074] Please combine Figure 11a and Figure 11b The lock cylinder tail rod 32 needs to rotate 90° from a vertical position to a horizontal position. Therefore, the knob 21 of the drive structure needs to rotate 90° to drive the tail rod reset structure 4 via the knob joint 23, thus driving the lock cylinder tail rod 32 to rotate 90°. When there is no external driving force, the reset disc 41 rotates 90° in the opposite direction under the restoring action of the second reset member 6 to return to its initial position. (See details...) Figure 11c .

[0075] Specifically, in this embodiment, the rotating hole 43 includes a first side 43a, a second side 43b, a third side 43c, and a fourth side 43d. The first side 43a and the second side 43b are arranged adjacent to each other, and the third side 43c and the fourth side 43d are arranged adjacent to each other. When the reset turntable 41 and the lock cylinder tail rod 32 are both in the initial state, the lock cylinder tail rod 32 is in a vertical state, and the first side 43a and the fourth side 43d of the rotating hole 43 abut against the lock cylinder tail rod 32, while the second side 43b and the third side 43c do not contact the lock cylinder tail rod 32. However, when the lock is successfully unlocked, the lock cylinder tail rod 32 is in a horizontal state, and the reset turntable 41 returns to its original position under the restoring action of the second reset member 6. At this time, the second side 43b and the third side 43c of the rotating hole 43 abut against the lock cylinder tail rod 32, while the first side 43a and the fourth side 43d do not contact the lock cylinder tail rod 32.

[0076] It should be noted that the electronic clutch 71 will automatically return to its original position after the push rod exceeds the set time. When the push rod of the electronic clutch 71 retracts, the clutch pin 72 will disengage from the slot 44 of the tail rod reset structure 4 under the restoring action of the compression spring. At this time, the rotation of the tail rod reset structure 4 can no longer be controlled by the drive structure 2.

[0077] When locking, since the knob connector 23 in this embodiment is connected to a reversing screw 9 for limiting the rotation direction of the reset disc 41, when the knob is turned in the opposite direction to lock, the reversing screw 9 on the knob connector will push the baffle 42 on the reset disc 41 to make the reset disc 41 rotate synchronously with the drive structure 2, thereby pushing the lock cylinder tail rod 32 to rotate from the horizontal state to the vertical state, so that the lock body 2000 extends to complete the locking. Specifically, see Figure 11c and Figure 11d Before locking, the second side 43b and the third side 43c of the rotating hole 43 abut against the lock cylinder tail rod 32. As the knob 21 rotates in the opposite direction to make the reset disc 41 rotate in the opposite direction, the second side 43b and the third side 43c of the rotating hole 43 will push the lock cylinder tail rod 32 to rotate in the opposite direction to a vertical state, thereby locking.

[0078] In embodiments where the reversing screw 9 is not used to limit the rotation direction of the reset disc 41, the drive structure 2 drives the tail rod reset structure 4 to rotate via an electronic clutch 71 in conjunction with a connecting piece. Therefore, before locking, it can be confirmed whether the drive structure 2 and the tail rod reset structure 4 are connected by the clutch pin 72. If the connecting piece does not connect the drive structure 2 and the tail rod reset structure 4, the user needs to re-verify to ensure that the electronic clutch 71 drives the clutch pin 72 to connect the drive structure 2 and the tail rod reset structure 4. Therefore, when the connecting piece connects the drive structure 2 and the tail rod reset structure 4, rotating the knob 21 in the opposite direction (i.e., the rotation direction of the knob 21 when locking is opposite to the rotation direction when unlocking) causes the knob 21 to drive the knob joint 23 to rotate in the opposite direction, which in turn drives the tail rod reset structure 4 to rotate. The rotation direction of the tail rod reset structure 4 is consistent with the rotation direction of the knob joint 23, thus driving the lock cylinder tail rod 32 to rotate from the horizontal state to the vertical state.

[0079] After successful locking, the first reset component 5 rotates the knob connector 23 back to its initial position, and the second reset component 6 rotates the reset disc 41 back to its initial position. The reset rotation direction of the knob connector 23 and the reset disc 41 is opposite to the rotation direction of the locking knob 21. During the reset process of the reset disc 41, the lock cylinder tail rod 32 remains vertical, and the engagement state between the rotating hole 43 of the reset disc 41 and the lock cylinder tail rod 32 returns to its initial position. Figure 11a The displayed state indicates that after locking, the lock cylinder tail rod 32 returns to the vertical position, the reset dial 41 returns to the initial position, and the first side 43a and the fourth side 43d of the rotating hole 43 re-abut against the lock cylinder tail rod 32, ready to push the lock cylinder tail rod 32 to rotate for the next unlocking.

[0080] In summary, by applying the knob reset mechanism 3000 to a smart lock, this application ensures that the knob 21 returns to its initial position after each use, eliminating the need for manual rotation by the user and improving ease of use. Furthermore, the knob reset mechanism 3000 of this application achieves automatic return of the knob to its original position through a knob and clutch structure. Its simple structure and easy installation help reduce the area occupied by the smart lock on the door leaf, resulting in higher durability and reliability.

[0081] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A knob reset mechanism, characterized in that, The lock cylinder includes a panel, a drive structure, a lock cylinder, and a tail rod reset structure. The drive structure is movable relative to the panel. The lock cylinder includes a lock cylinder shell and a lock cylinder tail rod that are rotatable relative to each other. The lock cylinder shell is connected to the drive structure and the two rotate synchronously. The tail rod reset structure is used to drive the lock cylinder tail rod to rotate. A connecting member is provided between the drive structure and the tail rod reset structure to connect the two. A first reset member is provided between the panel and the drive structure, and a second reset member is provided between the tail rod reset structure and the panel. When the connection between the connecting member and the drive structure and the tail rod reset structure is released, the drive structure and the tail rod reset structure return to their original positions under the restoring action of the first reset member and the second reset member, respectively.

2. The knob reset mechanism according to claim 1, characterized in that, Both the first reset member and the second reset member include torsion springs.

3. The knob reset mechanism according to claim 2, characterized in that, The drive structure includes a synchronously rotating knob, a knob base, and a knob connector. The knob connector is provided with a protrusion for abutting against the first reset member.

4. The knob reset mechanism according to claim 3, characterized in that, The knob joint is provided with a sliding groove, and the tail rod reset structure is provided with a slot at the position corresponding to the sliding groove. The connector includes a clutch pin that is slidably disposed in the sliding groove.

5. The knob reset mechanism according to claim 4, characterized in that, The slide groove is provided with a spring-loaded component that connects to the clutch pin to disengage the clutch pin from the slot and return it to its original position.

6. The knob reset mechanism according to claim 4, characterized in that, The panel is equipped with an electronic clutch for receiving external control commands to push the clutch pin into the slot.

7. The knob reset mechanism according to claim 3, characterized in that, The tail rod reset structure includes a reset turntable, and the reset turntable has a rotating hole in the middle for the lock cylinder tail rod to pass through.

8. The knob reset mechanism according to claim 7, characterized in that, The rotating hole is configured as an irregularly shaped hole formed by connecting two fan-shaped holes with their corners connected and arranged symmetrically at the center. The rotating hole includes a first side, a second side, a third side, and a fourth side. The first side and the second side are arranged adjacent to each other, and the third side and the fourth side are arranged adjacent to each other.

9. The knob reset mechanism according to claim 7, characterized in that, The lock cylinder tail rod can rotate more than 90° relative to the reset turntable within the rotating hole.

10. The knob reset mechanism according to claim 7, characterized in that, The reset turntable is provided with a boss that abuts against one end of the second reset member.

11. The knob reset mechanism according to claim 7, characterized in that, The knob connector is provided with a left screw hole and a right screw hole, the reset disc is provided with a baffle, and a reversing screw that abuts against the baffle is threaded into the left screw hole or the right screw hole. The reversing screw is used to limit the rotation direction of the tail rod reset structure relative to the drive structure.

12. The knob reset mechanism according to claim 1, characterized in that, It also includes a key, and the lock cylinder has a keyhole for inserting the key to make the lock cylinder and the lock cylinder tail rod rotate synchronously.

13. The knob reset mechanism according to claim 1, characterized in that, The drive structure is rotatable relative to the panel.

14. A knob reset mechanism, characterized in that, It includes a panel, a drive assembly, and a transmission assembly. Both the drive assembly and the transmission assembly are movable relative to the panel. The drive assembly is connected to the transmission assembly to control the extension and retraction of the latch by controlling the transmission assembly. The drive assembly is also provided with a reset assembly for returning to its original position after rotation.

15. The knob reset mechanism according to claim 14, characterized in that, Both the drive assembly and the transmission assembly can rotate relative to the panel.

16. The knob reset mechanism according to claim 14, characterized in that, The drive assembly rotates the transmission assembly to control the extension and retraction of the latch by a rotation angle of 90°.

17. The knob reset mechanism according to claim 14, characterized in that, The drive assembly includes a drive structure and a tail rod reset structure. The reset assembly includes a third reset component. The drive structure and the tail rod reset structure are respectively provided with a first push block and a second push block for connecting with the third reset component.

18. A smart lock, characterized in that, The lock includes a lock housing, a drive mechanism, and a lock body. The drive mechanism is a knob reset mechanism as described in any one of claims 1-17, and the knob reset mechanism is installed inside the lock housing. The knob reset mechanism is connected to the lock body to control the extension and retraction of the lock body.

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