Intelligent door lock free square rod adaptive device with two rotatable and adjustable ends and application of intelligent door lock free square rod adaptive device

Abstract

The invention relates to the technical field of intelligent door locks, in particular to an intelligent door lock free square rod adaptive device with two rotatable and adjustable ends and application of the intelligent door lock free square rod adaptive device. The free assembly comprises a horizontally-arranged free square rod, three first clamping plates hinged to the side wall of the free square rod, a first ratchet wheel structure and a second ratchet wheel structure at the inner end of the free square rod. An auxiliary locking structure for enhancing the locking effect is arranged in the intelligent lock body and comprises a third ratchet ring arranged in the middle of the free square rod in a sleeving mode, an auxiliary spring bolt located below the third ratchet ring and an abutting block used for pushing the auxiliary spring bolt to return, and the abutting block and the third ratchet ring are in transmission through a first crawler belt. By arranging the auxiliary locking structure, during use, the auxiliary spring bolt can be popped out only by lifting the handle upwards, during door opening, the auxiliary spring bolt can be retracted by directly pressing the handle downwards, a driving motor does not need to be additionally arranged, cost is reduced, and operation is convenient.

Description

Technical Field

[0001] This invention belongs to the field of smart door lock technology, specifically a smart door lock free square rod adapter device with adjustable rotation at both ends and its application. Background Technology

[0002] A smart door lock is an intelligent security terminal that uses biometric or electronic identification for encryption. Semi-automatic smart door locks are the most widely used; they retain a manual handle in addition to biometric or electronic identification. After successful identification, the user opens the door by turning the handle. To enhance security and prevent forced entry, semi-automatic smart door locks typically incorporate a free-rotating lever that can be adjusted at both ends. After locking, both the inner and outer handles can be adjusted to either a free or engaged state. In the free state, both handles can rotate freely without causing the bolt to reset, thus reducing the possibility of forced entry.

[0003] For example, invention application CN120273570A discloses a door lock with electronic handle lock and deadbolt linkage control, comprising two main parts: the electronic handle lock and the electronic deadbolt. The electronic handle lock mainly consists of a front handle assembly, a rear handle assembly, a latch bolt, and a square bar. The electronic deadbolt mainly consists of a lock cylinder assembly, a deadbolt electric drive module, and a deadbolt bolt. The deadbolt electric drive module has a knob and battery cover on the front for quickly opening or closing the deadbolt, as well as a knob shaft with a cross-shaped groove fixedly connected to the knob along the same axis. The lock cylinder assembly is for emergency unlocking, allowing for emergency unlocking with a key if the electronic components are damaged and cannot be used normally. When the front handle assembly is in standby mode, the handle is in a free state. If biometric recognition is successful, a signal is sent to the internal electronic control mechanism to switch the handle to the contact state. After a set time, the handle is returned to the free state. Another signal is transmitted wirelessly to the deadbolt drive module, which drives the deadbolt to retract, thus achieving synchronous unlocking of the latch and the deadbolt. To lock the deadbolt, simply press and hold any number key on the front handle for about three seconds. The deadbolt drive module receives the transmitted command signal and drives the deadbolt to extend, completing the locking process.

[0004] Based on the above cases and actual situations, we have found the following problems: smart locks usually do not have a single bolt, but multiple bolts, such as the flat bolt and the angled bolt in the above case. The extension and retraction of multiple bolts require multiple drive motors or modules, resulting in higher costs and more complex structures. Summary of the Invention

[0005] The purpose of this invention is to provide a smart door lock free lever adapter device with adjustable rotation at both ends and its application. By setting a secondary locking structure, the secondary lock tongue can be popped out by simply lifting the handle during use, and the secondary lock tongue can be retracted by simply pressing down the handle when opening the door. No additional drive motor is required, which reduces costs and makes operation convenient, thereby solving the above-mentioned problems of the prior art.

[0006] To achieve the above objectives, the present invention provides a smart door lock free lever adapter device with adjustable rotation at both ends, including a smart lock body, handles hinged to the inner and outer sides of the smart lock body, and a main bolt located at the top of the smart lock body. The smart lock body is provided with a free lever assembly for adjusting the engagement and disengagement state of the bolt body. The free lever assembly includes a horizontally arranged free lever, three first locking plates hinged to the side wall of the free lever, and a first ratchet structure and a second ratchet structure respectively sleeved on the outer end and inner end of the free lever. The inner and outer ends of the free lever are coaxially fixed with the central axis of the corresponding side handle. The outermost first locking plate is drivenly connected to the first ratchet structure, and the innermost first locking plate is drivenly connected to the second ratchet structure. The smart lock body is provided with a secondary locking structure to enhance the locking effect. The secondary locking structure includes a third ratchet ring sleeved in the middle of the free square rod, a secondary locking tongue located below the third ratchet ring, and a stop block for pushing the secondary locking tongue back. The stop block and the third ratchet ring are driven by a first track. The first locking plate in the middle is drivenly connected to the third ratchet ring. A fixed shaft is coaxially fixed in the middle of the stop block. A fourth ratchet ring is rotatably connected to the bottom outer side of the smart lock body. The outer end of the fixed shaft is drivenly connected to the fourth ratchet ring by a second locking plate. The fourth ratchet ring and the first ratchet structure are drivenly connected by a second track.

[0007] In this design, considering existing smart lock technology, to enhance lock security and prevent forced entry, a free-rotating handle that can be adjusted at both ends is typically incorporated into the lock. This means that after locking, both the inner and outer handles can be adjusted to either a free or engaged state. In the free state, both handles can rotate freely without resetting the bolt, thus reducing the likelihood of forced entry. However, smart locks typically use multiple bolts instead of a single bolt, requiring multiple drive motors to extend and retract them, resulting in higher costs and a more complex structure. Therefore, this application proposes a secondary locking structure. In use, simply lifting the handle extends the secondary bolt, and pressing down the handle retracts it when opening the door, eliminating the need for additional drive motors, reducing costs, and simplifying operation.

[0008] In the technical solution of the present invention, the first ratchet structure consists of a push handle and a first ratchet ring coaxially fixed inside the push handle. The push handle consists of a ring portion and a handle portion fixed to the top of the side wall of the ring portion. The outer wall of the first ratchet ring is fixed to the inner ring wall of the ring portion of the push handle. The handle portion of the push handle is connected to the main locking tongue. The first ratchet ring is sleeved on the outer side of the free square rod. The second ratchet structure consists of a second ratchet ring and a linkage rod. The second ratchet ring is sleeved on the inner side of the free square rod. The two ends of the linkage rod are respectively fixed to the inner side wall of the push handle and the outer side wall of the second ratchet ring.

[0009] In this configuration, by setting up a first ratchet structure, when the outer handle is pressed down, the free-moving square rod drives the first ratchet ring to rotate counterclockwise, pushing the main bolt back and thus unlocking the door. By setting up a second ratchet ring, when the inner handle is pressed down, the free-moving square rod drives the second ratchet ring to rotate counterclockwise, and the linkage rod drives the first ratchet ring to rotate counterclockwise synchronously, thus pushing the main bolt back and unlocking the door.

[0010] In the technical solution of the present invention, the outer wall of the free square rod is provided with three first card slots for the three first card slots to rotate. The first card slots are all curved arcs. The outermost first card slot extends outward to the left and abuts against the first ratchet ring. The outermost first card slot is bent downward counterclockwise from the inside to the outside and the corresponding first card slot has space for downward rotation. The inner tooth surface of the first ratchet ring is adapted to the outermost first card slot. The top of the push handle abuts against the left side of the rear side wall of the main locking tongue.

[0011] In this configuration, the outermost first plate is bent downwards counterclockwise from the inside out, and the corresponding first plate slot has space for downward rotation. This ensures that the outermost first plate can push the first ratchet ring when rotating counterclockwise, but will not drive the first ratchet ring to rotate when rotating clockwise, thus forming a one-way drive.

[0012] In the technical solution of the present invention, the innermost first locking plate is bent counterclockwise upward from the inside to the outside, and the corresponding first locking plate groove has space for upward rotation. The innermost first locking plate extends outward to the right and abuts against the second ratchet ring. The inner tooth surface of the second ratchet ring is adapted to the innermost first locking plate. The middle first locking plate extends outward to the right and abuts against the third ratchet ring. The middle first locking plate is bent clockwise downward from the inside to the outside, and the corresponding first locking plate groove has space for downward rotation. The inner tooth surface of the third ratchet ring is adapted to the middle first locking plate.

[0013] In this configuration, the innermost first locking plate is bent counter-clockwise upwards from the inside out, and the corresponding locking plate slot has space for upward rotation. This ensures that when the innermost first locking plate rotates counter-clockwise, it can push the second ratchet ring, but when it rotates clockwise, it will not drive the second ratchet ring to rotate, thus forming a unidirectional drive. Similarly, the middle first locking plate is bent clockwise downwards from the inside out, and the corresponding locking plate slot has space for downward rotation. This ensures that when the middle first locking plate rotates clockwise, it can push the third ratchet ring, but when it rotates clockwise, it will not drive the third ratchet ring to rotate, thus forming a unidirectional drive.

[0014] In the technical solution of the present invention, the inner wall of the left side of the smart lock body is symmetrically fixed with sliding rods at the bottom. The left end of the secondary lock tongue is horizontally L-shaped. The sliding rod passes through the left vertical wall of the secondary lock tongue and the two are slidably connected. The outer wall portion of the sliding rod between the secondary lock tongue and the inner wall of the left side of the smart lock body is fitted with a spring for pushing out the secondary lock tongue.

[0015] In this design, a spring is used to push the secondary locking tongue to slide to the right and extend it, improving the locking effect and reducing the possibility of forced entry.

[0016] In the technical solution of the present invention, the abutment block is a counterclockwise spiral shape from the inside to the outside. The left end of the abutment block abuts against the left vertical wall of the secondary lock tongue. A fixed shaft is coaxially rotatably connected to the middle of the abutment block. The inner end of the fixed shaft is fixed to the inner wall of the smart lock body. The first track is disposed between the fixed shaft and the third ratchet ring.

[0017] In this configuration, the abutment is designed as a counter-clockwise spiral from the inside out. This causes the distance between the left end of the abutment and the left vertical wall of the secondary locking tongue to decrease as the abutment rotates clockwise, allowing the spring to push the secondary locking tongue to slide to the right. By incorporating a first track, when the third ratchet ring rotates clockwise, the abutment is driven to rotate clockwise via the first track.

[0018] In the technical solution of the present invention, a side plate is bolted to the right side wall of the smart lock body, and the side plate is provided with holes for the main lock tongue and the auxiliary lock tongue to extend out. Six limiting rings are fixed to the left inner wall of the smart lock in pairs, and the two limiting rings in the same group are respectively set on both sides of the first ratchet ring, the second ratchet ring and the third ratchet ring.

[0019] In this configuration, the positions of the first, second, and third ratchet rings are limited by setting limit rings to prevent them from sliding along the free square rod, which would render the entire device unusable, and to provide support for the first, second, and third ratchet rings.

[0020] In the technical solution of the present invention, the free square rod is provided with a driving structure near its inner end. The driving structure includes a servo motor fixed inside the inner end of the free square rod, two transmission wheels symmetrically arranged on the outside of the free square rod, and two shafts coaxially fixed with the outer end face of the corresponding side transmission wheel. The two transmission wheels are connected to the output shaft of the servo motor through two third track drives. The left shaft is arranged between the left transmission wheel and the outermost first clamping plate, and the right shaft is arranged between the right transmission wheel and the middle first clamping plate.

[0021] In this setup, a servo motor is configured so that when a user opens the door from the outside and successfully identifies the user through biometrics or a password, the servo motor is activated and drives two transmission wheels to rotate via the third tracks on both sides.

[0022] In the technical solution of the present invention, a first spring is provided on the outer sleeve of the central shaft of the first card plate, the shaft is coaxially and fixedly connected to the central shaft of the corresponding first card plate, a driving tooth is coaxially fixed on the inner side of the transmission wheel on the right side, a driven tooth is engaged below the driving tooth, and the central shaft of the driven tooth is coaxially and fixedly connected to the central shaft of the innermost first card plate.

[0023] In this setup, by configuring the transmission wheel, the driving gear, and the driven gear, when the servo motor is activated, it will change the retracted or extended state of the three first plates through the transmission of the transmission wheel, the driving gear, and the driven gear, thereby realizing subsequent transmission actions.

[0024] On the other hand, the present invention also provides the application of a smart door lock free lever adapter device with adjustable rotation at both ends, which is the application of the smart door lock free lever adapter device with adjustable rotation at both ends as described above in a smart door lock with adjustable rotation at both ends.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by setting a first ratchet structure, a second ratchet structure, and a drive structure, when locking the door, the outermost first latch plate and the innermost first latch plate are in a retracted state, and the inner and outer handles are in a free-spinning state. When opening the door, the servo motor is successfully activated by biometric or password recognition, causing the innermost and outermost first latch plates to extend. At this time, the user can press down and rotate the outer handle to drive the push handle to rotate counterclockwise, thereby pushing the main lock tongue back to open the door.

[0026] 2. In this invention, by setting a secondary locking structure, when the door needs to be left out for a long time, the middle first locking plate is extended after locking the door. Lifting the outer handle causes the middle first locking plate to rotate the third ratchet ring clockwise, which in turn drives the stop block to rotate clockwise via the first track drive. At this time, the secondary locking tongue will extend outward, strengthening the locking effect. When opening the door, the user presses down and rotates the outer handle, which drives the push handle to rotate counterclockwise. At the same time, the second track drive drives the fourth ratchet ring to rotate counterclockwise, which in turn drives the fixed shaft to rotate counterclockwise via the second locking plate, causing the stop block to rotate counterclockwise. At this time, the secondary locking tongue will be pressed back and the door will be unlocked. The operation is simple and convenient, does not require multiple sets of drive modules, and has a low cost. Attached Figure Description

[0027] Figure 1 This is a simplified schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is a rear view of the interior of the door lock in this invention; Figure 4 This is a schematic diagram of the first ratchet structure, the second ratchet structure, and the free square bar in this invention; Figure 5 This is a cross-sectional view of the push handle and the third ratchet in this invention; Figure 6 This is a schematic diagram of the front side of the free square rod in this invention; Figure 7 This is a schematic diagram of the rear side of the free square rod in this invention; Figure 8 For the present invention Figure 7 Cross-sectional view of the free square bar in the middle; Figure 9 This is a schematic diagram of the driving structure in this invention; Figure 10 This is a schematic diagram of the rear side of the secondary locking structure in this invention; Figure 11 This is an exploded view of the secondary locking structure in this invention; Figure 12 This is an exploded view of the fourth ratchet ring and the fixed shaft in this invention; Explanation of reference numerals in the attached figures: 100. Smart lock body; 101. Handle; 102. Side panel; 103. Limiting ring; 104. Main bolt; 200. Free-floating component; 201. Free-floating square rod; 202. First locking plate; 2021. First spring-loaded spring; 210. First ratchet structure; 211. Push handle; 212. First ratchet ring; 220. Second ratchet structure; 221. Second ratchet ring; 222. Linkage rod; 230. Secondary locking structure; 231. Third ratchet ring; 232. Secondary locking tongue; 233. First track; 234. Fixed shaft; 235. Abutment block; 236. Slide rod; 237. Spring; 238. Fourth ratchet ring; 2381. Second track; 239. Second locking plate; 240. Drive structure; 241. Servo motor; 242. Transmission wheel; 243. Driving gear; 244. Driven gear; 245. Shaft; 246. Third track. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0029] Unless otherwise expressly stated, throughout this specification, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0030] Reference Figures 1-11 As shown, this embodiment provides a technical solution: The adjustable smart lock lever adapter is an application in smart locks with adjustable levers at both ends. It includes a smart lock body 100, handles 101 hinged to the inner and outer sides of the smart lock body 100, and a main bolt 104 located near the top inside the smart lock body 100. The smart lock body 100 contains a free-spinning component 200. By setting the free-spinning component 200, the engagement / disengagement state of the inner and outer handles 101 is controlled, allowing both to rotate freely, thus improving the overall security of the smart lock body 100.

[0031] Specifically, the free-moving component 200 includes a horizontally arranged free-moving square rod 201, three first locking plates 202 hinged to the side wall of the free-moving square rod 201, and a first ratchet structure 210 and a second ratchet structure 220 respectively sleeved on the outer end and inner end of the free-moving square rod 201. The inner and outer ends of the free-moving square rod 201 are coaxially fixed to the central axis of the corresponding side handle 101. The outermost first locking plate 202 is connected to the first ratchet structure 210, and the innermost first locking plate 202 is connected to the second ratchet structure 220. By setting the free-moving square rod 201, in the non-free-moving state, when the outer handle 101 is rotated, the free-moving square rod 201 can be driven to rotate synchronously, causing the outermost first locking plate 202 to drive the corresponding first ratchet structure 210 to rotate and open the door. When the inner handle 101 is turned, the free square rod 201 rotates synchronously, causing the innermost first latch plate 202 to drive the corresponding second ratchet structure 220 to rotate and open the door.

[0032] In addition, the smart lock body 100 is provided with a secondary locking structure 230 to enhance the locking effect. The secondary locking structure 230 includes a third ratchet ring 231 sleeved in the middle of the free square rod 201, a secondary locking tongue 232 located below the third ratchet ring 231, and a stop block 235 for pushing the secondary locking tongue 232 back. The stop block 235 and the third ratchet ring 231 are driven by a first track 233, and the intermediate first locking plate 202 is drivenly connected to the third ratchet ring 231. A fixed shaft 234 is coaxially fixed in the middle of the stop block 235. A fourth ratchet ring 238 is rotatably connected to the bottom of the smart lock body 100 on the outer side. The outer end of the fixed shaft 234 is drivenly connected to the fourth ratchet ring 238 by a second locking plate 239. The fourth ratchet ring 238 is drivenly connected to the first ratchet structure 210 by a second track 2381.

[0033] By setting the secondary locking structure 230, in the free state, the innermost and outermost first locking plates 202 are in the retracted state, and the middle first locking plate 202 is in the extended state. When the user is away for a long time, he can lift the outer handle 101. At this time, the middle first locking plate 202 drives the third ratchet ring 231 to rotate clockwise and drives the stop block 235 to rotate clockwise through the first track 233. At this time, the secondary locking tongue 232 will extend outward to enhance the locking effect.

[0034] When unlocking, after the user successfully identifies the device via biometrics or password, the innermost and outermost first locking plates 202 are extended, and the middle first locking plate 202 is retracted. At this time, the user presses down and rotates the outer handle 101, which drives the push handle 211 to rotate counterclockwise. This is then transmitted through the second track 2381, which drives the fourth ratchet ring 238 to rotate counterclockwise. This, in turn, drives the fixed shaft 234 to rotate counterclockwise through the second locking plate 239, causing the stop block 235 to rotate counterclockwise. At this time, the secondary locking tongue 232 will be pressed back to unlock the device.

[0035] Please see Figures 1-5 As shown, the first ratchet structure 210 consists of a push handle 211 and a first ratchet ring 212 coaxially fixed inside the push handle 211. The push handle 211 consists of a ring portion and a handle portion fixed to the top of the side wall of the ring portion. The outer wall of the first ratchet ring 212 is fixed to the inner ring wall of the ring portion of the push handle 211. The handle portion of the push handle 211 is connected to the main locking tongue 104 for transmission. The first ratchet ring 212 is sleeved on the outer side of the free square bar 201. The second ratchet structure 220 consists of a second ratchet ring 221 and a linkage rod 222. The second ratchet ring 221 is sleeved on the inner side of the free square bar 201. The two ends of the linkage rod 222 are fixed to the inner side wall of the push handle 211 and the outer side wall of the second ratchet ring 221, respectively. In addition, the second track 2381 is used for transmission between the fourth ratchet ring 238 and the first ratchet ring 212.

[0036] In the non-detached state, when opening the door from the outside, turn the outer handle 101 to drive the detached square bar 201 to rotate counterclockwise, so that the outermost first locking plate 202 pushes the first ratchet ring 212 to drive the push handle 211 to rotate counterclockwise, thereby pushing the main lock tongue 104 to slide horizontally to the left to exit the locked state, and the door can be opened.

[0037] When the door is not in a free state, when opening it from the inside, turn the inner handle 101 to drive the free square rod 201 to rotate counterclockwise, so that the innermost first locking plate 202 pushes the first ratchet ring 212, which in turn drives the push handle 211 to rotate counterclockwise through the linkage rod 222, thereby pushing the main lock tongue 104 to slide horizontally to the left and exit the locked state, so that the door can be opened.

[0038] It should be noted that the smart lock body 100 is equipped with a third spring that pushes out the main bolt 104. This is not shown in the figure and is a common technology for bolt ejection. It will not be described in detail here. The outer wall of the main bolt 104 has an outer protrusion on the left side. The outer protrusion is embedded in the inner wall of the smart lock body 100 and the two are slidably connected. The top protrusion of the push handle 211 abuts against the right side of the outer protrusion. In the non-free state, the handle 101 can rotate no more than 50° to avoid the push handle 211 from disengaging from the outer protrusion due to excessive rotation. A limit rod is fixed on the inner wall of the smart lock body 100 and abuts against the right side wall of the protrusion of the push handle 211 to prevent the push handle 211 from rotating clockwise in the free state, which would prevent the lock from being unlocked. This rod is not shown in the figure.

[0039] Please see Figures 3-7As shown, the outer wall of the free square rod 201 is provided with three first locking plate slots for the rotation of three first locking plates 202. Each first locking plate 202 is hinged within its corresponding first locking plate slot. All first locking plates 202 are curved arcs. The outermost first locking plate 202 extends outward to the left and abuts against the first ratchet ring 212. The outermost first locking plate 202 is curved downward counterclockwise from the inside out, and the corresponding first locking plate slot has space for downward rotation. This ensures that the outermost first locking plate 202 can push the first ratchet ring 212 when rotating counterclockwise, but will not drive the first ratchet ring 212 to rotate when rotating clockwise, thus forming a unidirectional drive. The inner tooth surface of the first ratchet ring 212 is adapted to the outermost first locking plate 202, and the top of the push handle 211 abuts against the left side of the rear wall of the main locking tongue 104.

[0040] Furthermore, the innermost first locking plate 202 is curved upward counterclockwise from the inside out, and the corresponding first locking plate groove has space for upward rotation. The inner tooth surface of the second ratchet ring 221 is adapted to the innermost first locking plate 202, ensuring that the innermost first locking plate 202 can push the second ratchet ring 221 when rotating counterclockwise, and will not drive the second ratchet ring 221 to rotate when rotating clockwise, thus forming a unidirectional drive.

[0041] Furthermore, the first intermediate retaining plate 202 is bent downwards clockwise from the inside out, and the corresponding first retaining plate groove has space for downward rotation. The inner tooth surface of the third ratchet ring 231 is adapted to the first intermediate retaining plate 202. This ensures that the first retaining plate 202 in the middle position can push the third ratchet ring 231 when rotating clockwise, but will not drive the third ratchet ring 231 to rotate when rotating clockwise, thus forming a unidirectional drive.

[0042] In addition, the space reserved in the first card slot allows the outermost first card 202 to rotate and retract, so that it comes into contact with the first ratchet ring 212, thereby making the free square bar 201 free, that is, when the handle 101 is turned, it will only spin freely and cannot open the door.

[0043] Please see Figures 10-12 As shown, symmetrical sliding rods 236 are fixed to the bottom of the left inner wall of the smart lock body 100. The left end of the secondary latch 232 is horizontally L-shaped. The sliding rods 236 pass through the left vertical wall of the secondary latch 232 and the two are slidably connected. A spring 237 is sleeved on the outer wall portion of the sliding rod 236 between the secondary latch 232 and the left inner wall of the smart lock body 100, which is used to push out the secondary latch 232. By setting the spring 237 to push the secondary latch 232 to slide to the right and extend it, the locking effect is improved and the possibility of forced entry is reduced.

[0044] Furthermore, the stop block 235 is a counterclockwise spiral shape from the inside out, with its left end abutting against the left vertical wall of the secondary locking tongue 232. This causes the distance between the left end of the stop block 235 and the left vertical wall of the secondary locking tongue 232 to decrease as the stop block 235 rotates clockwise, at which point the spring 237 can push the secondary locking tongue 232 to slide to the right.

[0045] It should be noted that after the secondary latch 232 is pushed back into the smart lock body 100, the position with the largest diameter of the abutment 235 is located below the horizontal line of the abutment 235. The spring 237 gives the abutment 235 a horizontal pushing force, causing the abutment 235 to have a tendency to rotate counterclockwise. The inner side wall of the abutment 235 is provided with a semi-circular arc limiting groove coaxial with the fixed shaft 234. The outer side wall of the fixed shaft 234 is provided with a limiting rod that matches the limiting groove. After the secondary latch 232 is pushed back into the smart lock body 100, the limiting rod is located at the leftmost end of the limiting groove. At this time, the limiting rod is stuck in the limiting groove, so that the abutment 235 cannot rotate counterclockwise, thereby fixing the position of the abutment 235 and the secondary latch 232.

[0046] Specifically, a fixed shaft 234 is coaxially rotatably connected to the middle of the abutment block 235. The inner end of the fixed shaft 234 is fixed to the inner wall of the smart lock body 100. A first track 233 is disposed between the fixed shaft 234 and the third ratchet ring 231. By setting the first track 233, when the third ratchet ring 231 rotates clockwise, the abutment block 235 can be driven to rotate clockwise through the transmission of the first track 233.

[0047] Please see Figures 1-2 As shown, a side plate 102 is bolted to the right side wall of the smart lock body 100. The side plate 102 has holes for the main latch 104 and the auxiliary latch 232 to extend out. Six limiting rings 103 are fixed to the left inner wall of the smart lock body 100 in pairs. The two limiting rings 103 in the same group are respectively set on both sides of the first ratchet ring 212, the second ratchet ring 221, and the third ratchet ring 231. By setting the limiting rings 103, the positions of the first ratchet ring 212, the second ratchet ring 221, and the third ratchet ring 231 are limited to prevent them from sliding along the free square rod 201 and causing the entire device to become unusable. The first ratchet ring 212, the second ratchet ring 221, and the third ratchet ring 231 and the corresponding limiting rings 103 are coaxially rotatably connected to each other to provide support.

[0048] Please see Figures 8-9As shown, a drive structure 240 is provided at the inner end of the free square rod 201. The drive structure 240 includes a servo motor 241 fixed inside the inner end of the free square rod 201, two transmission wheels 242 symmetrically arranged on the outside of the free square rod 201, and two shafts 245 coaxially fixed to the outer end faces of the corresponding transmission wheels 242. The two transmission wheels 242 are connected to the output shaft of the servo motor 241 via two third tracks 246. By setting the servo motor 241, when a user opens the door from the outside, after successful biometric or password recognition, the servo motor 241 is activated, driving the two transmission wheels 242 to rotate via the third tracks 246 on both sides.

[0049] It should be noted that the activation of the servo motor 241 is controlled by biometric or password recognition, which is existing technology. The specific circuit or principle will not be described in detail here.

[0050] Furthermore, the left shaft 245 is positioned between the left transmission wheel 242 and the outermost first clamping plate 202, and the right shaft 245 is positioned between the right transmission wheel 242 and the middle first clamping plate 202. A first spring-loaded spring 2021 is sleeved on the central shaft of the first clamping plate 202, and the shaft 245 is coaxially and fixedly connected to the central shaft of the corresponding first clamping plate 202. When the front transmission wheel 242 rotates clockwise, the first spring-loaded spring 2021 causes the outermost first clamping plate 202 to pop out, at which point the first clamping plate 202 and the first ratchet ring 212 will contact each other, presenting an open state. After the user leaves, the servo motor 241 is triggered again, causing the outermost first clamping plate 202 to retract, presenting a disengaged state.

[0051] It should be noted that the maximum spring force of the first spring 2021 on the first locking plate 202 should be less than the frictional force of the third ratchet ring 231, to prevent unscrupulous personnel from turning the handle 101 downwards and causing the third ratchet ring 231 to rotate after the secondary locking tongue 232 pops out. Furthermore, the first locking plate 202 and the second locking plate 239 have the same structure.

[0052] When the front drive wheel 242 rotates clockwise, the rear drive wheel 242 rotates counterclockwise, causing the first locking plate 202 in the middle position to pop out. At this time, if needed, the outer handle 101 can be lifted to pop out the secondary locking tongue 232, thereby improving the safety of locking.

[0053] In addition, a driving gear 243 is coaxially fixed to the inner side of the right-side transmission wheel 242, and a driven gear 244 meshes below the driving gear 243. The central axis of the driven gear 244 is coaxially and fixedly connected to the central axis of the innermost first clamping plate 202. When the rear transmission wheel 242 rotates counterclockwise, it will drive the innermost first clamping plate 202 to retract into a free state through the transmission of the driving gear 243 and the driven gear 244.

[0054] The specific working principle of the adjustable smart door lock free-standing rod adapter in this invention is as follows: When the user leaves and locks the door, the outermost first latch plate 202 and the innermost first latch plate 202 are in the retracted state. At this time, turning the inner and outer handles 101 will drive the free lever 201 to rotate, but the free lever 201 cannot drive the main latch 104 to retract and open the door. This is the free state.

[0055] When you need to be away for a long time, the first locking plate 202 in the middle is extended after locking the door. Lift the outer handle 101. At this time, the first locking plate 202 drives the third ratchet ring 231 to rotate clockwise and drives the stop block 235 to rotate clockwise through the first track 233. At this time, the secondary locking tongue 232 will extend outward to enhance the locking effect.

[0056] When opening the door, after the user successfully identifies themselves via biometrics or password, the servo motor 241 is activated, causing the innermost and outermost first latches 202 to extend and the middle first latch 202 to retract. At this time, the user presses down and rotates the outer handle 101, causing the push handle 211 to rotate counterclockwise, which in turn pushes the main latch 104 to slide horizontally to the left and exit the locked state, thus opening the door. The second track 2381 drives the fourth ratchet ring 238 to rotate counterclockwise, which in turn pushes the fixed shaft 234 to rotate counterclockwise through the second latch 239, causing the stop block 235 to rotate counterclockwise. At this time, the secondary latch 232 will be pressed back and the door will be unlocked.

[0057] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A smart door lock adjustable free-standing lever adapter, comprising a smart lock body, handles hinged to the inner and outer sides of the smart lock body, and a main bolt located near the top of the smart lock body, characterized in that: The smart lock body is provided with a freeing component for adjusting the engagement / disengagement state of the lock tongue body. The freeing component includes a horizontally arranged freeing square rod, three first locking plates hinged to the side wall of the freeing square rod, and a first ratchet structure and a second ratchet structure respectively sleeved on the outer end and inner end of the freeing square rod. The inner and outer ends of the freeing square rod are respectively coaxially fixed with the central shaft of the corresponding side handle. The outermost first locking plate is connected to the first ratchet structure in a transmission connection, and the innermost first locking plate is connected to the second ratchet structure in a transmission connection. The smart lock body is provided with a secondary locking structure to enhance the locking effect. The secondary locking structure includes a third ratchet ring sleeved in the middle of the free square rod, a secondary locking tongue located below the third ratchet ring, and a stop block for pushing the secondary locking tongue back. The stop block and the third ratchet ring are driven by a first track. The first locking plate in the middle is drivenly connected to the third ratchet ring. A fixed shaft is coaxially fixed in the middle of the stop block. A fourth ratchet ring is rotatably connected to the bottom outer side of the smart lock body. The outer end of the fixed shaft is drivenly connected to the fourth ratchet ring by a second locking plate. The fourth ratchet ring and the first ratchet structure are drivenly connected by a second track.

2. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 1, characterized in that: The first ratchet structure consists of a push handle and a first ratchet ring coaxially fixed inside the push handle. The push handle consists of a ring portion and a handle portion fixed to the top of the side wall of the ring portion. The outer wall of the first ratchet ring is fixed to the inner ring wall of the ring portion of the push handle. The handle portion of the push handle is connected to the main locking tongue. The first ratchet ring is sleeved on the outer side of the free square rod. The second ratchet structure consists of a second ratchet ring and a linkage rod. The second ratchet ring is sleeved on the inner side of the free square rod. The two ends of the linkage rod are respectively fixed to the inner side wall of the push handle and the outer side wall of the second ratchet ring.

3. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 2, characterized in that: The outer wall of the free square rod is provided with three first card slots for the three first card plates to rotate. The first card plates are all curved arcs. The outermost first card plate extends outward to the left and abuts against the first ratchet ring. The outermost first card plate is bent downward counterclockwise from the inside to the outside, and the corresponding first card slot has space for downward rotation. The inner tooth surface of the first ratchet ring is adapted to the outermost first card plate. The top of the push handle abuts against the left side of the rear wall of the main locking tongue.

4. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 3, characterized in that: The innermost first locking plate is curved upward counterclockwise from the inside to the outside, and the corresponding first locking plate groove has space for upward rotation. The innermost first locking plate extends outward to the right and abuts against the second ratchet ring. The inner tooth surface of the second ratchet ring is adapted to the innermost first locking plate. The middle first locking plate extends outward to the right and abuts against the third ratchet ring. The middle first locking plate is curved downward clockwise from the inside to the outside, and the corresponding first locking plate groove has space for downward rotation. The inner tooth surface of the third ratchet ring is adapted to the middle first locking plate.

5. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 4, characterized in that: The smart lock body has symmetrically fixed sliding rods on the bottom left inner wall. The secondary lock tongue is horizontally L-shaped at the left end. The sliding rod passes through the left vertical wall of the secondary lock tongue and the two are slidably connected. The outer wall portion of the sliding rod between the secondary lock tongue and the left inner wall of the smart lock body is fitted with a spring for pushing out the secondary lock tongue.

6. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 5, characterized in that: The abutment block is a counterclockwise spiral shape from the inside to the outside. The left end of the abutment block abuts against the left vertical wall of the secondary lock tongue. A fixed shaft is coaxially rotatably connected to the middle of the abutment block. The inner end of the fixed shaft is fixed to the inner wall of the smart lock body. The first track is disposed between the fixed shaft and the third ratchet ring.

7. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 6, characterized in that: A side plate is bolted to the right side wall of the smart lock body. The side plate has holes for the main lock tongue and the auxiliary lock tongue to extend out. Six limiting rings are fixed to the left inner wall of the smart lock body in pairs. The two limiting rings in the same group are respectively set on both sides of the first ratchet ring, the second ratchet ring and the third ratchet ring.

8. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 7, characterized in that: The free-standing square rod is provided with a driving structure near its inner end. The driving structure includes a servo motor fixed inside the inner end of the free-standing square rod, two transmission wheels symmetrically arranged on the outside of the free-standing square rod, and two shafts coaxially fixed with the outer end face of the corresponding side transmission wheel. The two transmission wheels are connected to the output shaft of the servo motor through two third track drives. The left shaft is located between the left transmission wheel and the outermost first clamping plate, and the right shaft is located between the right transmission wheel and the middle first clamping plate.

9. The dual-ended adjustable smart door lock free-standing rod adapter as described in claim 8, characterized in that: The central shaft of the first card plate is fitted with a first spring. The shaft is coaxially and fixedly connected to the central shaft of the corresponding first card plate. The inner side of the transmission wheel on the right side is coaxially fixed with a driving tooth. A driven tooth meshes below the driving tooth. The central shaft of the driven tooth is coaxially and fixedly connected to the central shaft of the innermost first card plate.

10. The application of a smart door lock freestanding rod adapter device with adjustable rotation at both ends, as described in claim 9, characterized in that: It is used in smart door locks that can be adjusted by rotating at both ends.

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