Clamping mechanism, control device and intelligent door lock

Abstract

The utility model relates to a clamping mechanism, a control device and an intelligent door lock. The clamping mechanism is arranged on the control device, clamps a to-be-clamped piece and comprises a supporting base and a lock control shell arranged on the control device. The at least two clamping pieces are arranged at intervals in the circumferential direction of the supporting seat and are arranged on the supporting seat in a sliding manner; the adjusting seat is rotatably arranged on the outer side of the supporting seat and is in transmission connection with the at least two clamping pieces; when the adjusting base rotates, the at least two clamping pieces can be driven to get close to each other or get away from each other in the supporting base, so that the at least two clamping pieces clamp or release the to-be-clamped piece. Thus, the two clamping pieces are driven by the adjusting seat to get close to or get away from each other in the supporting seat so as to adjust the distance between the two clamping pieces, so that the two clamping pieces can clamp the to-be-clamped pieces with different thicknesses, the application range of the control device is widened, and meanwhile, the reliability of the unlocking knob clamped by the at least two clamping pieces can be improved.

Description

Technical Field

[0001] This application relates to the field of smart lock technology, and in particular to a clamping mechanism, control device and smart door lock. Background Technology

[0002] With the increasing popularity of smart locks, their convenience and security are gradually being recognized, and more and more people want to install them. Currently, a large number of people do not want to make any changes to their doors when choosing a smart lock. Therefore, smart locks need to be compatible with the lock usage habits and lock standards of different countries and regions.

[0003] Currently, door locks are unlocked by rotating a knob on the door. After a smart lock is installed, it needs to hold the knob in place, and then rotate the knob to open the door. However, smart locks vary in thickness. During installation, the smart lock must hold a knob of the appropriate size. If the knob is too thick or too thin, the smart lock will not be able to hold it, affecting its performance. Utility Model Content

[0004] Therefore, it is necessary to address the problem that the smart door lock cannot clamp the unlocking knob when it is used with the original unlocking knob of the door due to the different thickness of the original unlocking knob. This problem can be solved by providing a clamping mechanism, a control device, and a smart door lock that can clamp parts of different thicknesses, thereby increasing the application range of the control device.

[0005] A clamping mechanism is disposed in a control device and clamps a workpiece to be clamped. The clamping mechanism includes:

[0006] A support base is disposed on the locking housing of the control device;

[0007] At least two clamping members are spaced apart circumferentially along the support base and slidably disposed on the support base; and

[0008] An adjusting seat is rotatably disposed on the outside of the support seat and is kinetically connected to at least two of the clamping members;

[0009] When the adjusting seat rotates, it can drive at least two of the clamping members to move closer or further apart from each other in the support seat, so that at least two of the clamping members clamp or release the object to be clamped.

[0010] In one embodiment of this application, the support base is rotatably disposed on the lock housing;

[0011] When the support seat rotates, it can drive at least two of the clamping members and the adjusting seat to rotate, so that at least two of the clamping members drive the clamped object to rotate.

[0012] In one embodiment of this application, the inner wall of the adjusting seat has a spiral pattern, and each of the clamping members has a spiral tooth at one end facing the adjusting seat, and the spiral teeth of at least two of the clamping members respectively engage the spiral pattern;

[0013] When the adjusting seat rotates, it can drive the spiral pattern to move, so that at least two of the clamping members move closer or further apart in the support seat.

[0014] In one embodiment of this application, the support base has a first sliding guide portion along its radial direction, and each of the clamping members has a first sliding engagement portion;

[0015] The first sliding engagement portion is slidably disposed on the first sliding guide portion to guide and limit the mutual approach or mutual distance of at least two clamping members.

[0016] In one embodiment of this application, the axial height of the adjusting seat is not less than 8 mm;

[0017] And / or, the diameter of the adjusting seat is in the range of 30mm to 40mm;

[0018] And / or, the movement distance of the clamping member relative to the support base is in the range of 0mm to 8mm;

[0019] And / or, the clamping mechanism includes two clamping members, which are arranged radially opposite to each other along the support base;

[0020] And / or, the outer peripheral surface of the adjusting seat has an anti-slip portion;

[0021] And / or, the clamping element includes at least an unlocking knob of a locking device disposed on the door body.

[0022] In one embodiment of this application, the support base includes a mounting body and a connecting shaft. The connecting shaft is disposed on the mounting body and located on the surface of the mounting body opposite to the clamping member. The connecting shaft is rotatably disposed on the locking housing and is connected to the drive mechanism in the control device. The drive mechanism drives the connecting shaft to rotate the support base and at least two clamping members.

[0023] And / or, the clamping mechanism further includes a manual knob, which is rotatably disposed on the side of the lock housing facing away from the door body and coaxially connected to the support base. The manual knob can drive the support base to rotate at least two of the clamping members.

[0024] In one embodiment of this application, each of the clamping members includes a clamping body, an extension, and a fixing member. The extension is movably disposed on the clamping body and can move toward or away from the support base to adjust the extension size of the extension relative to the clamping body.

[0025] The fastener passes through the clamping body and is mounted on the extension to fix the extension to the clamping body.

[0026] In one embodiment of this application, the clamping body has a first mounting hole, and the extension has a plurality of second mounting holes spaced apart along its moving direction;

[0027] The extension moves along the clamping body so that the corresponding second mounting hole on the extension is coaxial with the first mounting hole, and the fastener passes through the first mounting hole and is installed in the second mounting hole.

[0028] In one embodiment of this application, the distance between the centers of two adjacent second mounting holes ranges from 3mm to 6mm;

[0029] And / or, the surface of the clamping body has a second sliding guide portion, the extension portion has a second sliding engagement portion, and the extension portion is slidably disposed on the second sliding guide portion through the second sliding engagement portion;

[0030] And / or, the extension is disposed on the surface of the clamping body facing the other clamping member, or the extension is disposed on the surface of the clamping body away from the other clamping member.

[0031] A control device includes a locking housing, a drive mechanism, and a clamping mechanism as described in any of the above technical features;

[0032] The lock control housing is disposed on the surface of the door body, and the clamping mechanism is disposed on the lock control housing and located on the surface of the lock control housing facing the door body. The clamping mechanism is aligned with the part to be clamped on the door body and is capable of clamping or releasing the part to be clamped.

[0033] The drive mechanism is disposed in the locking housing and is connected to the clamping mechanism in a transmission manner. The drive mechanism drives the clamping mechanism to rotate the clamped part.

[0034] A smart door lock includes a locking device and a control device as described in any of the above technical features;

[0035] The control device can clamp the object to be clamped in the locking device, drive the object to be clamped to rotate, and unlock the locking device.

[0036] The clamping component includes at least an unlocking knob for a locking device.

[0037] By adopting the above technical solution, this application has at least the following technical effects:

[0038] The clamping mechanism, control device, and smart door lock of this application include a clamping mechanism in which a support base is disposed on the lock control housing, two clamping members are radially opposite and slidably disposed on the support base, and an adjusting seat is rotatably sleeved on the outside of the support base and located between the support base and the lock control housing. The adjusting seat is connected to the two clamping members via a transmission connection. Thus, when the adjusting seat rotates, it can drive the two clamping members to move synchronously, thereby allowing the two clamping members to slide within the support base to move closer to or further away from each other, so that the two clamping members can clamp or release the object to be clamped.

[0039] This clamping mechanism uses an adjusting seat to move two clamping components closer to or further apart within the support base, thus adjusting the distance between them. This allows the space between the two clamping components to accommodate components of different thicknesses, enabling them to hold components of varying thicknesses and increasing the application range of the control device. Furthermore, it improves the reliability of the unlocking knob held by at least two clamping components, preventing it from detaching from the component and ensuring the performance of the control device. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a control device according to an embodiment of this application from one perspective.

[0041] Figure 2 for Figure 1 A schematic diagram of the control device shown from another perspective.

[0042] Figure 3 for Figure 1 A schematic diagram of the clamping mechanism in the control device shown from one perspective.

[0043] Figure 4 for Figure 3 A schematic diagram of the clamping mechanism shown from another perspective.

[0044] Figure 5 for Figure 3 An exploded view of the clamping mechanism shown.

[0045] Figure 6 for Figure 1 The front view of the control device shown.

[0046] Figure 7 for Figure 6 The control device shown is a cross-sectional view along the AA direction.

[0047] Figure 8 for Figure 3 Side view of the clamping mechanism shown.

[0048] Figure 9 for Figure 8 The clamping mechanism shown is a cross-sectional view along the BB direction.

[0049] Figure 10 for Figure 8 The clamping mechanism shown is a cross-sectional view along the CC direction.

[0050] Figure 11 for Figure 5 A schematic diagram of the adjusting seat in the clamping mechanism shown.

[0051] Figure 12 for Figure 5 A schematic diagram of the support base in the clamping mechanism shown.

[0052] Figure 13 for Figure 5 A schematic diagram of the clamping components in the clamping mechanism shown.

[0053] Wherein: 10, control device; 100, clamping mechanism; 110, support base; 111, first sliding guide part; 112, mounting body; 113, connecting shaft; 114, mounting groove; 120, clamping component; 121, helical teeth; 122, first sliding mating part; 123, clamping body; 1231, first mounting hole; 1232, second sliding guide part; 1233, receiving groove; 124, extension part; 1241, second mounting hole; 1242, second sliding mating part; 125, fixing component; 130, adjusting base; 131, helical pattern; 132, anti-slip part; 140, manual knob; 150, fastener; 200, locking housing; 300, drive mechanism; 400, main control board. Detailed Implementation

[0054] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0055] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0060] Understandably, smart locks can be used with existing door locks. Currently, a knob is installed on the door to unlock it. After a smart lock is installed, it needs to hold the knob and drive it to open the door. However, the thickness of smart locks and knobs varies. During installation, the smart lock can only hold a knob of the appropriate size. If the knob is too thick or too thin, the smart lock will not be able to hold it, affecting its performance.

[0061] For this reason, see Figures 1 to 4 This application provides a novel clamping mechanism 100. The clamping mechanism 100 is applied in a control device 10. Figure 1 This is a schematic diagram of the control device 10 according to an embodiment of this application from one perspective. Figure 2 for Figure 1 A schematic diagram of the control device 10 from another perspective. Figure 3 for Figure 1 A schematic diagram of the clamping mechanism 100 in the control device 10 shown from one perspective. Figure 4 for Figure 3 A schematic diagram of the clamping mechanism 100 shown from another perspective.

[0062] In one embodiment of this application, the control device 10 is an unlocking device, which can be applied to a smart door lock to realize the automatic opening of the smart door lock. Of course, in other embodiments of this application, the control device 10 can also be applied to a switch cabinet or other devices that require clamping control.

[0063] Furthermore, the clamping mechanism 100 can clamp the component to be clamped, so that the control device 10 can drive the clamping mechanism 100 to move the component to be clamped, such as by rotation, thereby enabling the component to perform corresponding operations. In one embodiment of this application, the component to be clamped is an unlocking knob. After the clamping mechanism 100 clamps the unlocking knob, the control device 10 can drive the clamping mechanism 100 to rotate the unlocking knob synchronously, so that the unlocking knob can be unlocked. Of course, in other embodiments of this application, the component to be clamped can also be a switch cabinet or other protruding parts in a device that requires clamping control.

[0064] In one embodiment of this application, the smart door lock (not shown) includes a locking device (not shown) and the control device 10 of this application. The locking device includes a lock body (not shown) and an unlocking knob (not shown, i.e., the clamping element; hereinafter, the unlocking knob will be used to represent the clamping element only). The lock body is disposed in the door body (not shown), and the unlocking knob is disposed on the surface of the door body and is throttle-connected to the lock body. Optionally, the unlocking knob may be disposed on the inner side of the door body, i.e., the surface of the door body facing the interior.

[0065] The lock body can lock the door, and turning the unlocking knob can unlock the lock body, thereby unlocking the door and allowing it to be opened. The control device 10 includes the clamping mechanism 100 of this application. The control device 10 is disposed behind the door, and the control device 10 clamps the unlocking knob through the clamping mechanism 100. When unlocking, the control device 10 can drive the clamping mechanism 100 to rotate the unlocking knob, thereby unlocking the lock body.

[0066] In one embodiment of this application, when installing a smart door lock, only the control device 10 can be installed. That is, the control device 10 of this application can be directly installed on the door body and cooperate with the original lock device of the door body. At this time, the control device 10 clamps the unlocking knob through the clamping mechanism 100 and can drive the unlocking knob to rotate, thereby realizing the automatic unlocking of the door body and realizing automatic control of unlocking.

[0067] Of course, in other embodiments of this application, when installing a smart door lock, the control device 10 and the lock device are installed simultaneously, that is, the control device 10 and the lock device are installed together. When installing a smart door lock, the lock device is installed in the door body, and the control device 10 cooperates with the lock device to realize the automatic unlocking of the door body and realize automatic control of unlocking.

[0068] Understandably, the lock body includes at least a lock cylinder, which can employ current locking structures. It is worth noting that the focus of this application is on the control device 10; the specific structure of the lock body and the principle by which the unlocking knob controls the unlocking of the lock body are not the focus of this application and will not be explained later.

[0069] The clamping mechanism 100 of this application can reliably clamp the unlocking knob, preventing the clamping mechanism 100 from coming loose from the unlocking knob. Furthermore, the clamping mechanism 100 can adapt to unlocking knobs of different thicknesses, so that the clamping mechanism 100 can clamp unlocking knobs of different thicknesses. In this way, the control device 10 with the clamping mechanism 100 can adapt to unlocking knobs of different models / specifications without disassembling the original lock device on the door. This allows the control device 10 to adapt to lock devices of different regions and different models / specifications, increasing the application range of the control device 10 and making the control device 10 easier to use.

[0070] To better explain the specific structure and working principle of the clamping mechanism 100, the structure of the control device 10 is briefly introduced here. (See also...) Figure 1 and Figure 2 The control device 10 includes a lock control housing 200 and a clamping mechanism 100 as described in this application. The lock control housing 200 is mounted on the door body, and the clamping mechanism 100 is disposed on the lock control housing 200 and located on the surface of the lock control housing 200 facing the door body. The clamping mechanism 100 is capable of clamping the unlocking knob on the door body.

[0071] The lock control housing 200 is the outer shell of the control device 10, and the clamping mechanism 100 is the component that clamps the control device 10 and the unlocking knob. When the control device 10 is installed on the door, the lock control housing 200 is directly installed onto the door. At this time, the unlocking knob is located in the clamping mechanism 100, which clamps the unlocking knob to complete the installation of the control device 10. When it is necessary to control the lock body to unlock, the control device 10 controls the clamping mechanism 100 to rotate, which in turn drives the unlocking knob to rotate synchronously, so that the unlocking knob unlocks the lock body, thereby completing the automatic unlocking of the door.

[0072] See Figure 1 , Figure 2 , Figure 6 and Figure 7 In one embodiment, the control device 10 further includes a main control board 400 and a drive mechanism 300, which are disposed in the lock control housing 200. The drive mechanism 300 is tractively connected to the clamping mechanism 100. The main control board 400 is electrically connected to the drive mechanism 300 to control the drive mechanism 300 to drive the clamping mechanism 100 to rotate, thereby causing the clamping mechanism 100 to drive the unlocking knob to rotate, thus unlocking the unlocking knob. Figure 6 for Figure 1 The front view of the control device 10 shown is shown. Figure 7 for Figure 6 The control device 10 shown is a cross-sectional view along the AA direction.

[0073] The main control board 400 is the main control board of the control device 10, and it is housed within the lock housing 200. The drive mechanism 300 is the power source for the control device 10, also housed within the lock housing 200. The drive mechanism 300 is electrically connected to the main control board 400 and is drively connected to the clamping mechanism 100. Upon receiving an unlocking signal, the main control board 400 controls the drive mechanism 300 to operate. When the drive mechanism 300 operates, it controls the clamping mechanism 100 to rotate, thereby driving the unlocking knob to rotate and achieving automatic unlocking of the lock body.

[0074] Optionally, the drive mechanism 300 includes a motor (not shown) and a transmission assembly (not shown). The motor and transmission assembly are disposed in the locking housing 200. The motor is electrically connected to the main control board 400, and the transmission assembly is disposed at the output end of the motor and is drively connected to the clamping mechanism 100. The motor drives the transmission assembly to rotate the clamping mechanism 100.

[0075] Optionally, the transmission assembly can be a gear transmission assembly, a chain transmission assembly, etc. This application does not describe the structure of the transmission assembly. It is worth noting that the structural form of the lock control housing 200 is not limited in principle, as long as the main control board 400, drive mechanism 300, and other components can be installed within the lock control housing 200.

[0076] See Figures 1 to 5 In one embodiment, a clamping mechanism 100 is disposed on a control device 10 and clamps a workpiece to be clamped. The clamping mechanism 100 includes a support base 110, at least two clamping members 120, and an adjusting base 130. The support base 110 is disposed on the locking housing 200 of the control device 10. The at least two clamping members 120 are spaced apart circumferentially along the support base 110 and are slidably disposed on the support base 110. The adjusting base 130 is rotatably disposed on the outside of the support base 110 and is drively connected to the at least two clamping members 120. When the adjusting base 130 rotates, it can drive the at least two clamping members 120 to move closer or further apart from each other within the support base 110, so that the at least two clamping members 120 clamp or release the workpiece to be clamped. Figure 5 for Figure 3 An exploded view of the clamping mechanism 100 shown.

[0077] In one embodiment of this application, there are two clamping members 120. The support base 110 is the base for the overall installation of the clamping mechanism 100. The support base 110 is disposed on the control device 10, and also serves as the base for installing the clamping members 120. The two clamping members 120 are the main components for clamping the unlocking knob. The two clamping members 120 are spaced apart circumferentially along the support base 110, and are slidably disposed on the support base 110.

[0078] When the two clamping members 120 slide relative to the support base 110, the two clamping members 120 can move closer to each other or further apart to adjust the distance between the two clamping members 120. In this way, the distance between the two clamping members 120 can be adapted to the thickness of the unlocking knob so that the two clamping members 120 can accurately clamp the unlocking knob.

[0079] Understandably, the thickness of the unlocking knob refers to its radial dimension, which is the distance between the unlocking knob and the line connecting the two clamping members 120. If the distance between the two clamping members 120 is too small, it may be unable to clamp a thicker unlocking knob. If the distance between the two clamping members 120 is too large, the unlocking knob may easily detach from between the two clamping members 120, causing the clamping mechanism 100 to be unable to drive the unlocking knob to rotate, thus affecting the unlocking of the unlocking knob.

[0080] Therefore, this application slidably arranges two clamping members 120 on the support base 110, so that the two clamping members 120 can move closer to each other or further away from each other, so that the distance between the two clamping members 120 is adjustable, thereby allowing the distance between the two clamping members 120 to adapt to unlocking knobs of different thicknesses. Subsequently, the two clamping members 120 can also move closer to each other to reliably clamp the unlocking knob.

[0081] Meanwhile, this application achieves adjustment control of the clamping members 120 through the adjusting seat 130. The adjusting seat 130 is rotatably sleeved on the outside of the support seat 110, and the adjusting seat 130 can be driven to connect with the two clamping members 120. When the adjusting seat 130 rotates relative to the support seat 110, the adjusting seat 130 can drive the two clamping members 120 to move, so that the two clamping members 120 can slide relative to the support seat 110, thereby allowing the two clamping members 120 to move closer to or further away from each other.

[0082] In use, the clamping mechanism 100 of this application first rotates the adjusting seat 130 relative to the support seat 110, causing the adjusting seat 130 to drive the two clamping members 120 to slide along the support seat 110, thereby causing the two clamping members 120 to move closer or further apart. This allows the distance between the two clamping members 120 to approximately match the thickness of the unlocking knob. Then, the unlocking knob is placed between the two clamping members 120, and the adjusting seat 130 is operated again to move the two clamping members 120 closer together, so that the two clamping members 120 clamp the unlocking knob.

[0083] The clamping mechanism 100 of the above embodiment drives the two clamping members 120 to move closer or further apart in the support base 110 via the adjusting seat 130, thereby adjusting the distance between the two clamping members 120. In this way, the space between the two clamping members 120 can accommodate clamping members of different thicknesses, so that the two clamping members 120 can clamp clamping members of different thicknesses, increasing the application range of the control device 10. At the same time, it can also improve the reliability of the two clamping members 120 clamping the unlocking knob, prevent the clamping member from loosening, and ensure the performance of the control device 10.

[0084] Of course, in other embodiments of this application, the number of clamping members 120 may be three, four, or other numbers, and the multiple clamping members 120 are evenly distributed along the circumference of the support base 110. When the adjusting base 130 drives the multiple clamping members 120 to slide relative to the support base 110, the multiple clamping members 120 can simultaneously retract inward or expand outward, thereby achieving reliable clamping of the unlocking knob.

[0085] This application only uses two clamping parts 120 as an example for illustration. When the number of clamping parts 120 is other, the specific structure and working principle of the clamping mechanism 100 are essentially the same as when the number of clamping parts 120 is two, and this application will not repeat them.

[0086] See Figures 1 to 7 In one embodiment, the support base 110 is rotatably disposed in the lock control housing 200. When the support base 110 rotates, it can drive the two clamping members 120 and the adjusting seat 130 to rotate, so that the two clamping members 120 drive the clamped object to rotate. One end of the support base 110 is rotatably mounted in the lock control housing 200 and is connected to the drive mechanism 300 for transmission.

[0087] The support base 110 serves as the base for the entire clamping mechanism 100. When the drive mechanism 300 drives the support base 110 to rotate, the support base 110 can drive the two clamping members 120 to rotate synchronously. When the two clamping members 120 rotate, they can drive the clamped unlocking knob to rotate synchronously. Furthermore, since the two clamping members 120 are connected to the adjusting seat 130, they can also drive the adjusting seat 130 to rotate.

[0088] That is, when the drive mechanism 300 drives the support base 110 to rotate, the support base 110, through the clamping member 120, can drive the unlocking knob and the adjusting base 130 to rotate synchronously, thereby realizing the overall rotation of the clamping mechanism 100. This avoids the situation where the rotation of the support base 110 relative to the adjusting base 130 causes the two clamping members 120 to release the unlocking knob, ensuring the reliability of the clamping by the two clamping members 120. In this way, the support base 110 drives the unlocking knob to rotate through the two clamping members 120, so that the unlocking knob unlocks.

[0089] See Figure 5 , Figures 7 to 11 In one embodiment, the inner wall of the adjusting seat 130 has a spiral pattern 131, and each clamping member 120 has a spiral tooth 121 at one end facing the adjusting seat 130. The spiral teeth 121 of the two clamping members 120 respectively engage with the spiral pattern 131. When the adjusting seat 130 rotates, the spiral pattern 131 can drive the spiral tooth 121 to move, so that the two clamping members 120 move closer or further apart in the support seat 110. Figure 8 for Figure 3The side view of the clamping mechanism 100 shown. Figure 9 for Figure 8 The clamping mechanism 100 shown is a cross-sectional view along the BB direction. Figure 10 for Figure 8 The clamping mechanism 100 shown is a cross-sectional view along the CC direction. Figure 11 for Figure 5 A schematic diagram of the adjusting seat 130 in the clamping mechanism 100 shown.

[0090] A spiral pattern 131 is disposed on the inner wall of the adjusting seat 130, and further located at the bottom of the adjusting seat 130. Each clamping member 120 has a spiral tooth 121 at its bottom. The spiral directions of the spiral teeth 121 of the two clamping members 120 are opposite, and the two clamping members 120 are respectively engaged with the spiral pattern 131 through their corresponding spiral teeth 121. When the adjusting seat 130 rotates relative to the support seat 110, the adjusting seat 130 can drive the two clamping members 120 to slide relative to the support seat 110 through the engagement of the spiral pattern 131 and the spiral teeth 121.

[0091] Since the helical directions of the helical teeth 121 on the two clamping members 120 are opposite, when the adjusting seat 130 rotates, it can drive the two clamping members 120 to move closer or further apart, thereby adjusting the distance between the two clamping members 120. Rotating the adjusting seat 130 clockwise causes the two clamping members 120 to move closer together through the engagement of the helical threads 131 and the helical teeth 121, thus reducing the distance between them; rotating the adjusting seat 130 counterclockwise causes the two clamping members 120 to move further apart through the engagement of the helical threads 131 and the helical teeth 121, thus increasing the distance between them.

[0092] See Figure 3 , Figure 5 , Figure 7 , Figure 8 , Figure 12 and Figure 13 In one embodiment, the support base 110 has a first sliding guide portion 111 along its radial direction, and each clamping member 120 has a first sliding engagement portion 122. The first sliding engagement portion 122 is slidably disposed on the first sliding guide portion 111 to guide and limit the mutual approach or mutual distance of the two clamping members 120. Figure 12 for Figure 5 A schematic diagram of the support base 110 in the clamping mechanism 100 shown. Figure 13 for Figure 5 A schematic diagram of the clamping member 120 in the clamping mechanism 100 shown.

[0093] The sliding engagement between the first sliding guide portion 111 and the first sliding engagement portion 122 can limit and guide the movement of the clamping member 120. When the adjusting seat 130 rotates, it drives the two clamping members 120 to move through the meshing of the spiral thread 131 and the spiral tooth 121. At this time, the two clamping members 120 will tend to rotate along the spiral thread 131. However, due to the sliding limit of the first sliding guide portion 111 and the first sliding engagement portion 122, the clamping member 120 can only slide along the first sliding guide portion 111 through the first sliding engagement portion 122, so that the two clamping members 120 slide relative to the support seat 110.

[0094] Thus, when the adjusting seat 130 is rotated, the adjusting seat 130 drives the two clamping members 120 to move through the meshing of the spiral threads 131 and the spiral teeth 121. In turn, the clamping members 120 can drive the first sliding engagement part 122 to slide along the first sliding guide part 111, so that the two clamping members 120 can move closer to each other or further away from each other, thereby adjusting the distance between the two clamping members 120 so that the two clamping members 120 can clamp unlocking knobs of different thicknesses.

[0095] See Figure 3 , Figure 5 , Figure 7 , Figure 8 and Figure 12 In one embodiment, the first sliding guide portion 111 is a guide groove disposed on the support base 110, and the first guide mating portion is a sliding protrusion disposed on the clamping member 120, the sliding protrusion being slidably disposed on the guide groove. Of course, in other embodiments of this application, the first sliding guide portion 111 may be a guide rail, and the first sliding mating portion 122 may be a guide groove, which is slidably disposed on the guide rail.

[0096] See Figure 3 , Figure 5 , Figure 7 , Figure 8 and Figure 12 In one embodiment, the support base 110 further has a mounting groove 114, which extends radially along the support base 110 and extends through the support base 110 axially. The clamping member 120 is mounted in the mounting groove 114 such that the helical teeth 121 at the bottom of the clamping member 120 can extend through the mounting groove 114 so that the clamping member 120 can engage with the helical threads 131 through the helical teeth 121.

[0097] In one embodiment, the first sliding guide portion 111 is disposed in the mounting groove 114 so that the clamping member 120 can slide and engage with the first sliding guide portion 111 through the first sliding engagement portion 122. When the first sliding guide portion 111 is a guide groove, the first sliding guide portion 111 is recessed in the side wall of the mounting groove 114, so that the first sliding guide portion 111 can guide and limit the clamping member 120. When the first sliding guide portion 111 is a guide rail, the guide rail can also be disposed in the side wall of the mounting groove 114, the clamping member 120 engages with the first sliding guide portion 111, and passes through the mounting groove 114 to engage with the helical thread 131.

[0098] In one embodiment, the axial height of the adjusting seat 130 is not less than 8mm. That is, the axial height of the adjusting seat 130 is greater than or equal to 8mm, which ensures that the adjusting seat 130 has a certain height along the axial direction, making it convenient for operators to manually tighten the adjusting seat 130.

[0099] Optionally, the axial height of the adjusting seat 130 is 8mm to 10mm, which allows for easy hand-tightening of the adjusting seat 130 while ensuring a reduction in the axial height of the clamping mechanism 100. Of course, in other embodiments of this application, the axial height of the adjusting seat 130 may also be other dimensions.

[0100] In one embodiment, the diameter of the adjusting seat 130 is in the range of 30mm to 40mm. When the diameter of the adjusting seat 130 is within the above range, it can ensure that the clamping member 120 has sufficient movement space, so that the two clamping members 120 can reliably clamp the unlocking knob, while also making it easy to turn the adjusting seat 130 by hand.

[0101] In one embodiment, the movement distance of the clamping member 120 relative to the support base 110 ranges from 0mm to 8mm. That is, after the adjusting base 130 drives the movement distance of each clamping member 120 within the above range, the distance between the two clamping members 120 can be adapted to the thickness of the unlocking knob, thereby enabling the clamping member 120 to clamp unlocking knobs of different thicknesses.

[0102] See Figures 3 to 5 , Figure 11 In one embodiment, the outer peripheral surface of the adjusting seat 130 has an anti-slip portion 132. The anti-slip portion 132 is disposed around the outer periphery of the adjusting seat 130, increasing the friction when the adjusting seat 130 rotates, preventing slippage when the operator twists by hand, and facilitating manual operation. In this embodiment, the anti-slip portion 132 has a striped structure. Of course, in other embodiments of this application, the anti-slip portion 132 may also be anti-slip bumps or an anti-slip coating, etc.

[0103] See Figures 7 to 10In one embodiment, the support base 110 includes a mounting body 112 and a connecting shaft 113. The connecting shaft 113 is disposed on the mounting body 112 and located on the surface of the mounting body 112 opposite to the clamping member 120. The connecting shaft 113 is rotatably disposed on the locking housing 200 and is connected to the drive mechanism 300 in the control device 10. The drive mechanism 300 drives the connecting shaft 113 to rotate the support base 110 and the two clamping members 120.

[0104] The mounting body 112 is the main component for mounting the clamping member 120. The mounting body 112 is cylindrical and has a first sliding guide 111. The connecting shaft 113 is located at one end of the mounting body 112 and extends in a direction away from the mounting body 112. The connecting shaft 113 is coaxial with the mounting body 112 and is rotatably mounted in the lock housing 200. It is connected to the drive mechanism 300. The drive mechanism 300 can drive the connecting shaft 113 to rotate the mounting body 112.

[0105] When the lock body is automatically unlocked by the control device 10, the main control board 400 sends an unlocking signal to the drive mechanism 300. The drive mechanism 300 drives the connecting shaft 113 to rotate, which in turn drives the mounting body 112 to rotate. The mounting body 112 drives the clamping member 120 on it to rotate synchronously. Since the clamping member 120 engages with the spiral thread 131 through the spiral teeth 121, the clamping member 120 can drive the adjusting seat 130 to rotate synchronously. That is, the drive mechanism 300 drives the entire clamping mechanism 100 to rotate through the connecting shaft 113, so that the two clamping members 120 drive the unlocking knob to rotate, thereby unlocking the lock body.

[0106] In one embodiment, the mounting body 112 and the connecting shaft 113 are an integral structure. This improves the structural strength of the mounting body 112 and the connecting shaft 113 and reduces assembly steps. Of course, in other embodiments of this application, the mounting body 112 and the connecting shaft 113 can also be reliably connected by means of adhesive bonding or threaded connection.

[0107] See Figures 1 to 10 In one embodiment, the clamping mechanism 100 further includes a manual knob 140, which is rotatably disposed on the side of the lock housing 200 away from the door body and coaxially connected with the support base 110. The manual knob 140 can drive the support base 110 to rotate the two clamping members 120.

[0108] The manual knob 140 is a component for manually unlocking the control device 10. The manual knob 140 is rotatably connected to the support base 110 and is located on the side of the lock housing 200 opposite to the door body. When the operator rotates the manual knob 140, the manual knob 140 drives the support base 110 to rotate, which in turn drives the two clamping members 120 and the unlocking knob to rotate, causing the entire clamping mechanism 100 to rotate the unlocking knob, thus unlocking the lock body.

[0109] See Figures 7 to 10 In one embodiment, the clamping mechanism 100 further includes a fastener 150, which passes through the support base 110 and is mounted on the manual knob 140. The fastener 150 is disposed on the connecting shaft 113 of the support base 110 and mounted on the manual knob 140. The fastener 150 secures the support base 110 to the manual knob 140, thereby allowing the manual knob 140 to accurately rotate the support base 110. Optionally, the fastener 150 is a threaded component or other structure capable of achieving a fastening connection.

[0110] See Figures 3 to 5 , Figures 7 to 10 , Figure 13 In one embodiment, each clamping member 120 includes a clamping body 123, an extension 124, and a fixing member 125. The extension 124 is movably disposed on the clamping body 123 and can move toward or away from the support base 110 to adjust the protrusion size of the extension 124 relative to the clamping body 123. The fixing member 125 passes through the clamping body 123 and is mounted on the extension 124 to fix the extension 124 to the clamping body 123.

[0111] The clamping body 123 is the main structure of the clamping member 120. A first sliding engagement portion 122 is disposed at the bottom of the clamping body 123, and a helical tooth 121 is disposed at the bottom of the first sliding engagement portion 122. An extension portion 124 is slidably disposed in the clamping body 123. Furthermore, the extension portion 124 can move toward or away from the support base 110, so that the extension portion 124 can retract or extend relative to the clamping body 123. In this way, the extension size of the clamping member 120 relative to the support base 110 can be adjusted.

[0112] Understandably, the size by which the unlocking knob protrudes from the door body is its height. If the unlocking knob is at its normal height, after the control device 10 is installed on the door, the unlocking knob is positioned precisely between the two clamping members 120, allowing the two clamping members 120 to accurately hold the unlocking knob when they are close together. If the unlocking knob is too small, after the control device 10 is installed on the door, there will be a certain distance between the unlocking knob and the two clamping members 120, preventing the two clamping members 120 from holding the unlocking knob.

[0113] Therefore, this application provides a retractable extension 124 in the clamping body 123. The extension 124 can extend or retract along the height direction of the unlocking knob to adjust the size of the clamping member 120 along the height direction of the unlocking knob, that is, to adjust the extension size of the extension 124 relative to the clamping body 123, that is, to adjust the extension height of the extension 124, so that the clamping member 120 can clamp unlocking knobs of different heights.

[0114] When the clamping member 120 clamps the unlocking knob at its normal height, the extension 124 retracts into the clamping body 123, meaning the extension 124 does not extend beyond the clamping body 123, thus achieving reliable clamping of the unlocking knob. If the clamping member 120 clamps an unlocking knob with a smaller height, the extension 124 extends beyond the clamping body 123 to increase the size of the clamping member 120 along the height direction of the unlocking knob, so that the unlocking knob is positioned between the two clamping members 120. The two clamping members 120, through the extension 124, can reliably clamp the unlocking knob.

[0115] Furthermore, after the extension 124 extends relative to the clamping body 123, the fixing member 125 can pass through the extension 124 and be installed on the clamping body 123. In this way, the fixing member 125 can fix the extension 124 to the clamping body 123, so that the position of the extension 124 relative to the clamping body 123 is fixed, preventing the position of the extension 124 relative to the clamping body 123 from shifting, so as to ensure that the extension 124 can firmly clamp the unlocking knob.

[0116] See Figure 9 , Figure 10 and Figure 13 In one embodiment, the clamping body 123 has a first mounting hole 1231, and the extension 124 has a plurality of second mounting holes 1241 spaced apart along its moving direction. The extension 124 moves along the clamping body 123 so that the corresponding second mounting holes 1241 on the extension 124 are coaxial with the first mounting holes 1231, and the fixing member 125 passes through the first mounting holes 1231 and is installed in the second mounting holes 1241.

[0117] When adjusting the size of the clamping member 120 along the height direction of the unlocking knob, the extension 124 is pulled to extend and retract relative to the clamping body 123, so that the second mounting hole 1241 at the corresponding position of the extension 124 corresponds to the first mounting hole 1231 of the clamping body 123. Then, the fixing member 125 is passed through the second mounting hole 1241 and installed into the first mounting hole 1231 to fix the extension 124 to the clamping body 123.

[0118] When it is necessary to increase the size of the clamping member 120 along the height direction of the unlocking knob, the extension 124 extends out of the clamping body 123. The size of the extension 124 extending out of the clamping body 123 is adjusted according to the height of the unlocking knob, and then the fixing member 125 is used to fix the extension 124 to the clamping body 123. In this way, the height of the clamping member 120 can be adjusted according to the height of the unlocking knob so that the clamping member 120 can clamp unlocking knobs of different heights.

[0119] Optionally, the fastener 125 may be a threaded component, the first mounting hole 1231 may be a threaded hole, and the second mounting hole 1241 may be a smooth hole or a threaded hole, so that the fastener 125 can fix the extension 124 to the clamping body 123. Optionally, the extension 124 may be plate-shaped or a clamping block. Optionally, the clamping body 123 may be plate-shaped or a clamping block.

[0120] See Figure 9 , Figure 10 and Figure 13 In one embodiment, the distance between the centers of two adjacent second mounting holes 1241 is in the range of 3mm to 6mm. That is, along the height direction of the unlocking knob, the distance between the centers of two adjacent second mounting holes 1241 is in the range of 3mm to 6mm, so that the extension 124 extends in the range of 3mm to 6mm to satisfy the clamping of the unlocking knob.

[0121] In one embodiment, the number of second mounting holes 1241 is two to three, and the distance between the centers of two adjacent second mounting holes 1241 ranges from 3mm to 6mm. This allows the extension 124 to be adjusted in multiple positions, enabling it to extend to different heights, thus making the clamping mechanism 100 compatible with various types / specifications of unlocking knobs. Of course, in other embodiments of this application, the number of second mounting holes 1241 may also be different.

[0122] See Figure 9 , Figure 10 and Figure 13 In one embodiment, the surface of the clamping body 123 has a second sliding guide portion 1232, and the extension portion 124 has a second sliding engagement portion 1242. The extension portion 124 is slidably disposed on the second sliding guide portion 1232 via the second sliding engagement portion 1242. The second sliding guide portion 1232 and the second sliding engagement portion 1242 extend along the height direction of the unlocking knob.

[0123] When the extension 124 extends or retracts relative to the clamping body 123, the extension 124 can drive the second sliding engagement part 1242 to slide along the second sliding guide part 1232. The extension and retraction of the extension 124 are guided by the cooperation between the second sliding guide part 1232 and the second sliding engagement part 1242, ensuring that the extension 124 extends or retracts accurately relative to the clamping body 123, thereby ensuring that the extension 124 can accurately clamp the unlocking knob.

[0124] See Figure 9 , Figure 10 and Figure 13 In one embodiment, the second sliding guide portion 1232 is a guide groove disposed on the clamping body 123, and the second guide mating portion is a sliding protrusion disposed on the extension portion 124, the sliding protrusion being slidably disposed on the guide groove. Of course, in other embodiments of this application, the second sliding guide portion 1232 may also be a guide rail, and the second sliding mating portion 1242 may be a guide groove, which is slidably disposed on the guide rail.

[0125] See Figure 9 , Figure 10 and Figure 13 In one embodiment, a recessed receiving groove 1233 is provided in the clamping body 123, and the extension 124 is movably disposed in the receiving groove 1233. A second sliding guide 1232 is disposed in the receiving groove 1233. After the extension 124 is installed in the receiving groove 1233, the second sliding engagement portion 1242 on the extension 124 can slide and engage with the second sliding guide 1232. In this embodiment, the second sliding guide 1232, which is a guide groove, is disposed at the edge of the receiving groove 1233 and guides and engages with the second sliding engagement portion 1242 of the extension 124 located in the receiving groove 1233.

[0126] See Figure 9 , Figure 10 and Figure 13 In one embodiment, the extension 124 is disposed on the surface of the clamping body 123 facing the other clamping member 120, or the extension 124 is disposed on the surface of the clamping body 123 away from the other clamping member 120. That is, the extension 124 is disposed on the opposing or opposite surfaces of the two clamping members 120.

[0127] The clamping mechanism 100 of this application has a spiral pattern 131 in the adjusting seat 130 and spiral teeth 121 on the two clamping members 120 that mesh with the spiral pattern 131, and the spiral directions of the spiral teeth 121 on the two clamping members 120 are opposite. Since the two clamping members 120 are slidably mounted in the support seat 110 through the engagement of the first sliding guide part 111 and the first sliding engagement part 122, when the adjusting seat 130 is rotated clockwise, the adjusting seat 130 drives the two clamping members 120 to move closer to each other relative to the support seat 110 through the engagement of the spiral pattern 131 and the spiral teeth 121; when the adjusting seat 130 is rotated counterclockwise, the adjusting seat 130 drives the two clamping members 120 to move away from each other relative to the support seat 110 through the engagement of the spiral pattern 131 and the spiral teeth 121.

[0128] Thus, by rotating the adjusting seat 130 clockwise or counterclockwise, the two clamping members 120 are brought closer or further apart to adjust the distance between them. This allows the two clamping members 120 to hold unlocking knobs of different thicknesses reliably, preventing the unlocking knob from slipping off the clamping members 120. Furthermore, after the two clamping members 120 reliably hold the unlocking knob, the control device 10 can drive the support seat 110 via the drive mechanism 300 to rotate the entire clamping mechanism 100, achieving automatic unlocking of the unlocking knob. Alternatively, the manual knob 140 can drive the support seat 110 to rotate the entire clamping mechanism 100, achieving manual unlocking of the unlocking knob.

[0129] Furthermore, to accommodate unlocking knobs of different heights, the clamping mechanism 100 of this application also includes an extension 124 in the clamping member 120. The extension 124 can extend or retract relative to the clamping body 123 to adjust the overall height of the clamping member 120. Thus, when clamping an unlocking knob with a smaller height, the extension 124 can extend relative to the clamping body 123, allowing the clamping member 120 to hold the unlocking knob. Moreover, the extension 124 is provided with two to three second mounting holes 1241, allowing the extension 124 to be adjusted two to three levels relative to the clamping body 123, thereby enabling the two clamping members 120 to be compatible with unlocking knobs of different models / specifications, achieving the clamping of the corresponding unlocking knob.

[0130] The clamping mechanism 100 of this application drives two clamping members 120 to move closer or further apart in the support base 110 via the adjusting seat 130, thereby adjusting the distance between the two clamping members 120. In this way, the space between the two clamping members 120 can accommodate clamping members of different thicknesses, so that the two clamping members 120 can clamp clamping members of different thicknesses, increasing the application range of the control device 10. At the same time, it can also improve the reliability of the two clamping members 120 clamping the unlocking knob, prevent the clamping member from loosening, and ensure the performance of the control device 10.

[0131] See Figure 1 , Figure 2 , Figure 6 and Figure 7 This application also provides a control device 10, which includes a lock control housing 200, a drive mechanism 300, and a clamping mechanism 100 as described in any of the above embodiments. The lock control housing 200 is disposed on the surface of the door body, and the clamping mechanism 100 is disposed in the lock control housing 200 and located on the surface of the lock control housing 200 facing the door body. The clamping mechanism 100 is aligned with the part to be clamped on the door body and is capable of clamping or releasing the part to be clamped. The drive mechanism 300 is disposed in the lock control housing 200 and is drively connected to the clamping mechanism 100. The drive mechanism 300 drives the clamping mechanism 100 to rotate the clamped part. After adopting the clamping mechanism 100 of the above embodiments, the control device 10 of this application can clamp unlocking knobs of different thicknesses.

[0132] This application also provides a smart door lock, including a locking device and a control device 10 as described in any of the above embodiments. The control device 10 is capable of clamping a component to be clamped in the locking device to drive the component to rotate, thereby unlocking the locking device. The component to be clamped includes at least an unlocking knob of the locking device. The smart door lock of this application, using the control device 10 of the above embodiments, can clamp unlocking knobs of different thicknesses.

[0133] In this way, after converting the original lock mechanism of the door into a smart lock, the control device 10 can be directly installed on the door and cooperate with the original unlocking knob. At this time, the clamping mechanism 100 on the control device 10 can clamp unlocking knobs of different thicknesses and heights, realizing intelligent unlocking of the lock mechanism. In this way, the control device 10 can adapt to unlocking knobs of different models / specifications without removing the original lock mechanism on the door, reducing the conversion cost and facilitating its widespread use.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A clamping mechanism, characterized in that, The clamping mechanism, which is located in the control device and clamps the part to be clamped, includes: A support base is disposed on the locking housing of the control device; At least two clamping members are spaced apart circumferentially along the support base and slidably disposed on the support base; and An adjusting seat is rotatably disposed on the outside of the support seat and is kinetically connected to at least two of the clamping members; When the adjusting seat rotates, it can drive at least two of the clamping members to move closer or further apart from each other in the support seat, so that at least two of the clamping members clamp or release the object to be clamped.

2. The clamping mechanism according to claim 1, characterized in that, The support base is rotatably mounted on the lock housing; When the support seat rotates, it can drive at least two of the clamping members and the adjusting seat to rotate, so that at least two of the clamping members drive the clamped object to rotate.

3. The clamping mechanism according to claim 1, characterized in that, The inner wall of the adjusting seat has a spiral pattern, and each of the clamping members has a spiral tooth at one end facing the adjusting seat, with the spiral teeth of at least two of the clamping members respectively engaging the spiral pattern; When the adjusting seat rotates, it can drive the spiral pattern to move, so that at least two of the clamping members move closer or further apart in the support seat.

4. The clamping mechanism according to claim 1, characterized in that, The support base has a first sliding guide portion along its radial direction, and each of the clamping members has a first sliding engagement portion; The first sliding engagement portion is slidably disposed on the first sliding guide portion to guide and limit the mutual approach or mutual distance of at least two clamping members.

5. The clamping mechanism according to claim 1, characterized in that, The axial height dimension of the adjusting seat is not less than 8mm; And / or, the diameter of the adjusting seat is in the range of 30mm to 40mm; And / or, the movement distance of the clamping member relative to the support base is in the range of 0mm to 8mm; And / or, the clamping mechanism includes two clamping members, which are arranged radially opposite to each other along the support base; And / or, the outer peripheral surface of the adjusting seat has an anti-slip portion; And / or, the clamping element includes at least an unlocking knob of a locking device disposed on the door body.

6. The clamping mechanism according to claim 1, characterized in that, The support base includes a mounting body and a connecting shaft. The connecting shaft is disposed on the mounting body and located on the surface of the mounting body opposite to the clamping member. The connecting shaft is rotatably disposed on the locking housing and is connected to the drive mechanism in the control device. The drive mechanism drives the connecting shaft to rotate the support base and at least two clamping members. And / or, the clamping mechanism further includes a manual knob, which is rotatably disposed on the side of the lock housing facing away from the door body and coaxially connected to the support base. The manual knob can drive the support base to rotate at least two of the clamping members.

7. The clamping mechanism according to any one of claims 1 to 6, characterized in that, Each of the clamping members includes a clamping body, an extension, and a fixing member. The extension is movably disposed on the clamping body and can move toward or away from the support base to adjust the extension size relative to the clamping body. The fastener passes through the clamping body and is mounted on the extension to fix the extension to the clamping body.

8. The clamping mechanism according to claim 7, characterized in that, The clamping body has a first mounting hole, and the extension has a plurality of second mounting holes spaced apart along its moving direction; The extension moves along the clamping body so that the corresponding second mounting hole on the extension is coaxial with the first mounting hole, and the fastener passes through the first mounting hole and is installed in the second mounting hole.

9. The clamping mechanism according to claim 8, characterized in that, The distance between the centers of two adjacent second mounting holes is 3mm to 6mm. And / or, the surface of the clamping body has a second sliding guide portion, the extension portion has a second sliding engagement portion, and the extension portion is slidably disposed on the second sliding guide portion through the second sliding engagement portion; And / or, the extension is disposed on the surface of the clamping body facing the other clamping member, or the extension is disposed on the surface of the clamping body away from the other clamping member.

10. A control device, characterized in that, Includes a locking housing, a drive mechanism, and a clamping mechanism as described in any one of claims 1 to 9; The lock control housing is disposed on the surface of the door body, and the clamping mechanism is disposed on the lock control housing and located on the surface of the lock control housing facing the door body. The clamping mechanism is aligned with the part to be clamped on the door body and is capable of clamping or releasing the part to be clamped. The drive mechanism is disposed in the locking housing and is connected to the clamping mechanism in a transmission manner. The drive mechanism drives the clamping mechanism to rotate the clamped part.

11. A smart door lock, characterized in that, Includes a locking device and a control device as described in any one of claims 1 to 10; The control device can clamp the object to be clamped in the locking device, drive the object to be clamped to rotate, and unlock the locking device. The clamping component includes at least an unlocking knob for a locking device.

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