A lock cylinder with outdoor anti-lock function, a lock and a method for outdoor anti-lock and authorized unlocking of a door lock

Abstract

This invention relates to a lock cylinder, lock assembly, and door lock with outdoor deadbolt function, as well as an outdoor deadbolt locking and authorized unlocking method. The lock includes a housing, an outer handle, and an inner handle. A dial is installed in the housing. The outer and inner handles control the rotation of the dial. The lock cylinder also includes an external transmission mechanism, an internal transmission mechanism, and a clutch mechanism. The outer handle forms a unidirectional transmission engagement with the dial through the external transmission mechanism. When the outer handle rotates in a first direction, it drives the dial to rotate; when it rotates in a second direction, it idles. The inner handle forms a bidirectional transmission engagement with the dial through the internal transmission mechanism. The internal and external transmission mechanisms are connected by a controllable transmission mechanism. When the clutch mechanism is closed, the outer handle can drive the dial to rotate in the second direction. This lock cylinder and lock assembly achieve unidirectional deadbolt locking and reverse idle rotation of the outer handle through the external transmission mechanism, balancing the convenience and security of outdoor deadbolt locking. By controlling the opening and closing of the clutch mechanism, the unlocking authority of the outer handle can be adjusted, making it flexible and adaptable to more usage scenarios.

Description

Technical Field

[0001] This invention relates to the field of lock technology. Background Technology

[0002] Some electronic lock cylinders on the market currently require a password or fingerprint verification to unlock or deadbolt from the outside. Only after identity verification can the outer handle be operated to activate the bolt. This structure means that even when users temporarily leave the house and only need to deadbolt from the outside, they must first undergo electronic verification, which is inconvenient. If the lock loses power or its electronic components malfunction, the ability to deadbolt from the outside is completely lost, posing a security risk.

[0003] Therefore, there is room for improvement in this type of door lock. Summary of the Invention

[0004] The technical problem solved by this disclosure is to provide an improved lock cylinder, a lock having the lock cylinder, and a corresponding unlocking method for the lock, which optimizes the way the door lock is operated from the outside.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a lock cylinder with an outdoor deadbolt function, comprising a shell, an outer handle, and an inner handle. A dial is installed in the shell. The lock cylinder further includes an external transmission mechanism, an internal transmission mechanism, and a clutch mechanism. The outer handle forms a unidirectional transmission engagement with the dial through the external transmission mechanism. When the outer handle rotates in a first direction, it drives the dial to rotate; when it rotates in a second direction, it forms an idle engagement with the dial. The inner handle forms a bidirectional transmission engagement with the dial through the internal transmission mechanism. The internal transmission mechanism and the external transmission mechanism are connected by a controllable transmission mechanism. When the clutch mechanism is closed, the outer handle can drive the dial to rotate in the second direction, and when the outer handle rotates in the first direction, it still drives the dial through the external transmission mechanism.

[0006] As described above, the lock cylinder with outdoor deadbolt function includes an external transmission mechanism comprising an external transmission shaft, an elastic reset component, and a one-way transmission component. The one-way transmission component can move axially along the external transmission shaft. The elastic reset component provides elastic preload to the one-way transmission component, ensuring that the one-way transmission component normally maintains a one-way transmission engagement with the dial wheel. When the one-way transmission component rotates along the second direction with the external transmission shaft, it can rotate circumferentially relative to the dial wheel and retract axially, achieving a free-spinning engagement. After the rotational force is removed, the one-way transmission component is axially reset under the action of the elastic reset component, and re-maintains a one-way transmission engagement with the dial wheel.

[0007] As described above, the lock cylinder with outdoor deadbolt function has a one-way transmission component that engages with the dial wheel using a one-way ratchet tooth surface.

[0008] As described above, the lock cylinder with outdoor deadbolt function has an external drive shaft that is fixedly connected to the external handle and rotates synchronously.

[0009] As described above, the lock cylinder with outdoor deadbolt function has an elastic reset component that is a compression spring sleeved on the external drive shaft.

[0010] As described above, the lock cylinder with outdoor deadbolt function includes an internal transmission mechanism comprising an internal transmission shaft and a transmission base that are fixed to each other. The internal transmission shaft is fixedly connected to the internal handle, and the transmission base is fixedly connected to the dial wheel, so as to enable the internal handle to drive the dial wheel bidirectionally.

[0011] As described above, the lock cylinder with outdoor deadbolt function includes a clutch mechanism comprising a drive motor, an axial transmission component, a first clutch component, and a second clutch component. The axial transmission component is connected to the output end of the drive motor. The first clutch component is fixedly connected to the axial transmission component. The first clutch component is connected to the transmission base, and the first clutch component can move axially relative to the transmission base, and the two rotate synchronously in the circumferential direction. The second clutch component is connected to the outer transmission shaft and rotates synchronously. When the drive motor is activated, the axial transmission component drives the first clutch component to move axially and forms a transmission engagement with the second clutch component, so that the clutch mechanism is in a closed state, realizing torque transmission between the outer transmission mechanism and the inner transmission mechanism.

[0012] As described above, the lock cylinder with outdoor deadbolt function is configured such that the drive motor is reversed after receiving a reset command, causing the first clutch and the second clutch to separate.

[0013] As described above, for a lock cylinder with an outdoor deadbolt function, the reset command is generated based on at least one of the following conditions: A. The clutch mechanism closes for a preset duration; B. The dial reaches the unlock position; C. The user inputs a reset command.

[0014] As described above, the lock cylinder with outdoor deadbolt function has an axial transmission component that converts the rotational motion of the drive motor into axial linear motion, and the linear motion output end of the transmission component is fixedly connected to the first clutch component.

[0015] As described above, the lock cylinder with outdoor deadbolt function has a first clutch and a second clutch that are mutually cooperating one-way ratchet tooth surface structure. When the clutch mechanism is in the closed state, the outer handle rotates in the second direction, and the torque is transmitted to the dial wheel through the second clutch, the first clutch, and the transmission base to drive the dial wheel to rotate.

[0016] As described above, the lock cylinder with outdoor deadbolt function has a second clutch that is axially movable and mounted on the external drive shaft. The second clutch is equipped with an auxiliary elastic element that applies an elastic force toward the first clutch to the second clutch.

[0017] As described above, the lock cylinder with outdoor deadbolt function has a transmission base connected to the outer end of the inner transmission shaft. The transmission base and the interior of the inner transmission shaft form a communicating cavity. The drive motor of the clutch mechanism is located in the cavity and fixed to the transmission base.

[0018] As described above, the lock cylinder with outdoor deadbolt function has the first clutch component and the transmission base in a sliding fit using axial ribs and axial grooves.

[0019] A lock, wherein the lock body is provided with a lock cylinder as described in any of the preceding claims, the lock cylinder having a dial wheel that drives the bolt; the inner handle controls the bolt to unlock and lock via the dial wheel; when the clutch mechanism is not closed, the outer handle rotates in a first direction to drive the bolt to lock via the dial wheel, and rotates freely in a second direction; when the clutch mechanism is closed, the outer handle can drive the bolt to unlock via the dial wheel.

[0020] As described above, the lock is further equipped with an unlocking authority control component, which is electrically connected to the drive motor of the clutch mechanism and is used to receive external unlocking commands and control the opening and closing of the clutch mechanism.

[0021] A method for locking a door lock from the outside and authorizing its unlocking, applied to the aforementioned lock, includes the following steps: In the default state where the clutch mechanism is not closed, rotating the outer handle causes it to move in the first direction, and the outer transmission mechanism transmits torque to the dial wheel, which drives the locking tongue to complete the anti-locking process. In the default state where the clutch mechanism is not closed, rotating the outer handle causes it to move in the second direction, creating free rotation between the outer transmission mechanism and the dial wheel, while the dial wheel remains stationary, thus achieving anti-theft protection in the unauthorized state. The unlocking authorization control component receives valid authorization information, and after successful verification, sends a control signal to the drive motor. The drive motor runs and drives the clutch mechanism to close, so that the outer transmission mechanism and the inner transmission mechanism form a transmission connection. With the clutch mechanism closed, rotating the outer handle causes it to move in the second direction. The torque is transmitted sequentially through the outer transmission mechanism, the clutch mechanism, and the inner transmission mechanism to the dial wheel, which drives the lock tongue to complete the unlocking action. When the unlocking action is completed, the drive motor receives a reset command and rotates in reverse, causing the clutch mechanism to disengage, and the outer handle returns to the default one-way deadbolt and reverse idle working mode.

[0022] The beneficial effects of this disclosure are as follows: The lock cylinder and lock achieve one-way deadbolt locking of the outer handle through the external transmission mechanism, and reverse free rotation, which takes into account both the convenience and security of outdoor deadbolt locking. By controlling the opening and closing of the clutch mechanism, the unlocking authority of the outer handle can be adjusted, making it flexible to use and adaptable to more usage scenarios. The inner handle can control the locking and deadbolt in both directions to meet the daily use needs of indoor use. Attached Figure Description

[0023] Some specific embodiments of the present invention will now be described in detail by way of example and not limitation, with reference to the accompanying drawings, in which the same reference numerals designate the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0024] In the attached image: Figure 1 This is a schematic diagram of the lock cylinder of the present invention; Figure 2 This is a cross-sectional view of the lock cylinder of the present invention; Figure 3 This is a cross-sectional schematic diagram of the lock cylinder structure of the present invention; Figure 4 This is an exploded view of the lock cylinder structure of the present invention; Figure 5 This is a schematic diagram of the external drive shaft of the lock core of the present invention; Figure 6 This is a schematic diagram of the unidirectional transmission component of the lock cylinder of the present invention; Figure 7 This is a first schematic diagram of the dial of the lock cylinder of the present invention; Figure 8 This is a second schematic diagram of the dial of the lock cylinder of the present invention; Figure 9 This is a schematic diagram of the transmission base of the lock cylinder of the present invention; Figure 10 This is a schematic diagram of the internal drive shaft of the lock cylinder of the present invention; Figure 11 This is a schematic diagram of the clutch mechanism of the lock cylinder of the present invention; Figure 12 This is a schematic diagram of the second clutch component of the lock cylinder of the present invention; The markings in the image are explained as follows: A. Lock cylinder; 1. Outer handle; 101. Outer drive shaft; 1011. Outer end of (outer drive shaft); 1012. Inner end of (outer drive shaft); 1013. First step; 1014. Second step; 102. One-way transmission component; 1021. Drive surface; 1022. Sliding surface; 103. Elastic reset component; 2. Inner handle; 201. Inner drive shaft; 2011. Slot; 202. Transmission base; 2021. Axial groove; 2 022, Pin; 203, Cavity; 2031, Window; 3, Outer shell; 4, Dial wheel; 401, Outer end face of (Dial wheel); 402, Inner end face of (Dial wheel); 5, Clutch mechanism; 501, Drive motor; 502, Lead screw; 503, Lead screw nut; 504, First clutch component; 505, Second clutch component; 506, Auxiliary elastic component; 507, Gasket; 508, Buffer elastic component; 509, Axial rib. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0026] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by those skilled in the art to which this invention pertains.

[0027] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a,” “one,” or “the” do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including” or “contains” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The terms “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0028] See appendix Figure 1-12The diagram shows a lock cylinder A with an outdoor deadbolt function, comprising a housing 3, an outer handle 1, an inner handle 2, and a dial 4. The dial 4 is installed in the housing 3. The outer handle 1 and the inner handle 2 are both tractively connected to the dial 4 and control the rotation of the dial 4. The lock cylinder A also includes an outer transmission mechanism, an inner transmission mechanism, and a clutch mechanism 5. The outer handle 1 forms a one-way transmission engagement with the dial 4 through the outer transmission mechanism. When the outer handle 1 rotates in a first direction, it drives the dial 4 to rotate; when it rotates in a second direction, it forms a free-spinning engagement with the dial 4. The inner handle 2 forms a two-way transmission engagement with the dial 4 through the inner transmission mechanism. The inner transmission mechanism and the outer transmission mechanism are controllably connected through the clutch mechanism 5. When the clutch mechanism 5 is in the closed state, the inner transmission mechanism and the outer transmission mechanism are mutually tractively engaged, allowing the outer handle 1 to drive the dial 4 to rotate in the second direction, while the outer handle 1 still drives the dial 4 through the outer transmission mechanism when rotating in the first direction.

[0029] Lock cylinder A includes a housing 3, an outer handle 1, and an inner handle 2. A dial 4 is movably installed inside the housing 3. The outer handle 1 and inner handle 2 are respectively located on the outer and inner sides of the housing 3, and are connected to the dial 4 through corresponding transmission relationships, enabling the dial 4 to rotate and thus drive the lock tongue to complete the unlocking and deadbolting actions. Lock cylinder A is also equipped with an external transmission mechanism, an internal transmission mechanism, and a clutch mechanism 5. These three mechanisms work together to achieve outdoor deadbolting, free-spinning, and authorized outdoor unlocking functions.

[0030] An external transmission mechanism connects the external handle 1 and the dial 4, enabling a one-way transmission between them. Specifically, when the external handle 1 rotates in the first direction (i.e., the locking direction), the torque of the external handle 1 is transmitted to the dial 4 through the external transmission mechanism, causing the dial 4 to rotate synchronously, thus achieving convenient locking from the outside without the need for auxiliary tools. When the external handle 1 rotates in the second direction (i.e., the unlocking direction), opposite to the first direction, the external transmission mechanism and the dial 4 engage in free-spinning, and the rotation of the external handle 1 cannot be transmitted to the dial 4. The dial 4 remains stationary, effectively avoiding the risk of unlocking due to external prying and improving the anti-theft performance of the lock.

[0031] The internal transmission mechanism is connected between the inner handle 2 and the dial wheel 4, so that the inner handle 2 and the dial wheel 4 form a bidirectional transmission cooperation. That is, no matter whether the inner handle 2 rotates in the first direction or the second direction, its torque can be transmitted to the dial wheel 4 through the internal transmission mechanism, driving the dial wheel 4 to rotate accordingly, which meets the daily use needs of normal unlocking and locking on the indoor side, and the operation is flexible and convenient.

[0032] The clutch mechanism 5 connects the inner transmission mechanism and the outer transmission mechanism to achieve a controllable transmission connection between them. When the clutch mechanism 5 is in the open state, the inner transmission mechanism and the outer transmission mechanism are independent of each other, and the outer handle 1 only maintains a one-way anti-lock and reverse free rotation safety mode. When the clutch mechanism 5 receives an authorization command and is in the closed state, the inner transmission mechanism and the outer transmission mechanism form a transmission connection. At this time, the torque of the outer handle 1 rotating in the second direction can be transmitted to the dial 4 through the outer transmission mechanism, the clutch mechanism 5, and the inner transmission mechanism, driving the dial 4 to rotate and realizing the authorized unlocking function on the outdoor side.

[0033] Thus, through the cooperation of the external transmission mechanism, the internal transmission mechanism and the clutch mechanism 5, lock cylinder A can achieve convenient deadbolting on the outside without the need for keys or other auxiliary tools. It also enhances anti-theft security through the free-spinning design. At the same time, it only grants outdoor unlocking permission after authorization, thus balancing ease of use and security protection.

[0034] In some embodiments, the external transmission mechanism includes an external transmission shaft 101, an elastic reset member 103, and a one-way transmission member 102; the one-way transmission member 102 is axially movable along the external transmission shaft 101; the elastic reset member 103 provides an elastic preload to the one-way transmission member 102, so that the one-way transmission member 102 normally maintains a one-way transmission engagement with the dial wheel 4; when the one-way transmission member 102 rotates with the external transmission shaft 101 in a second direction, it can slide circumferentially relative to the dial wheel 4 and retract axially to achieve a free-spinning engagement; after the rotational force is removed, the one-way transmission member 102 is axially reset under the action of the elastic reset member 103, and re-maintains a one-way transmission engagement with the dial wheel 4.

[0035] This embodiment further refines the basic structure of the aforementioned lock cylinder A. The external transmission mechanism includes an external transmission shaft 101, an elastic reset member 103, and a one-way transmission member 102. The external transmission shaft 101 is used to establish the transmission connection between the external handle 1 and the one-way transmission member 102. The external transmission shaft 101 is fixedly connected to the external handle 1 and rotates synchronously, which can fix the external handle 1 to the outer end 1011 of the external transmission shaft 101. The one-way transmission member 102 can be axially movable along the outer transmission shaft 101 to install the inner end 1012 of the external transmission shaft 101 and form a one-way transmission relationship with the dial wheel 4. The elastic reset member 103 can be a compression spring, sleeved on the external transmission shaft 101, to provide a continuous elastic preload for the one-way transmission member 102, pushing the one-way transmission member 102 to keep it in contact with the dial wheel 4 under normal conditions, ensuring a stable one-way transmission cooperation between the two.

[0036] Specifically, the one-way transmission component 102 is sleeved on the outer transmission shaft 101. The inner hole of the one-way transmission component 102 and the outer contour of the outer transmission shaft 101 are both polygonal in shape, so as to realize the function of axial movement of the one-way transmission component 102 and synchronous rotation of the two. A first step 1013 is formed on the outer transmission shaft 101. One end of the compression spring abuts against the first step 1013, and the other end abuts against the one-way transmission component 102.

[0037] The one-way transmission component 102 and the dial wheel 4 preferably adopt a one-way ratchet tooth surface engagement, that is, the one-way transmission component 102 and the outer end face 401 of the dial wheel 4 are engaged by ratchet tooth surface meshing. Of course, other methods such as wedge surface plus inclined surface engagement can also be adopted, but in this embodiment, the one-way ratchet tooth surface engagement is the preferred method.

[0038] When the outer handle 1 is rotated in the first direction (reverse locking direction), the outer handle 1 drives the outer drive shaft 101 to rotate synchronously. The one-way transmission component 102 is engaged with the dial wheel 4 under the pre-tightening action of the elastic reset component 103. The ratchet drive surface 1021 of the one-way transmission component 102 cooperates with the ratchet drive surface of the dial wheel 4 to generate driving force, so that the torque of the outer drive shaft 101 is transmitted to the dial wheel 4 through the one-way transmission component 102, driving the dial wheel 4 to rotate to realize outdoor reverse locking. The entire transmission process is stable and reliable, and no additional assistance is required.

[0039] When the outer handle 1 rotates in the second direction (unlocking direction), the outer drive shaft 101 drives the one-way drive component 102 to rotate synchronously. At this time, the ratchet sliding surface 1022 of the one-way drive component 102 cooperates with the ratchet sliding surface of the dial wheel 4. This force overcomes the preload of the elastic reset component 103, causing the one-way drive component 102 to axially retract along the outer drive shaft 101, and at the same time, it slides circumferentially relative to the dial wheel 4, thus forming free rotation. The rotational torque of the outer handle 1 cannot be transmitted to the dial wheel 4, effectively preventing the risk of external force prying open the lock.

[0040] After the rotational force of the outer handle 1 is removed, the circumferential force on the one-way transmission component 102 disappears. Under the elastic preload of the elastic reset component 103, the one-way transmission component 102 is axially reset along the outer transmission shaft 101, and re-adhere to the dial wheel 4 to maintain the one-way transmission engagement state, ensuring that the dial wheel 4 can be normally driven to achieve anti-lock when the outer handle 1 rotates in the first direction.

[0041] In some embodiments, the internal transmission mechanism includes an internal transmission shaft 201 and a transmission base 202 that are fixed to each other. The internal transmission shaft 201 is fixedly connected to the internal handle 2, and the transmission base 202 is fixedly engaged with the dial wheel 4 to enable the internal handle 2 to drive the dial wheel 4 in both directions.

[0042] One end of the inner drive shaft 201 is connected to the inner handle 2, and the other end is connected to the drive base 202, so that the two are relatively fixed and rotate synchronously. For example, an axial slot 2011 is provided on the inner drive shaft 201, and a corresponding pin 2022 is provided on the end of the drive base 202 near the inner drive shaft 201. When the two are connected and fixed, the pins 2022 of the drive base 202 are inserted into the corresponding slots 2011 one by one. The end of the drive base 202 facing away from the inner drive shaft 201 is connected to the inner end face 402 of the dial wheel 4. The two are assembled and connected by a concave-convex structure to achieve synchronous rotation. Thus, the rotation operation of the inner handle 2 is transmitted to the dial wheel 4 through the inner drive shaft 201 and the drive base 202, driving the dial wheel 4 to rotate accordingly in both the first and second directions, realizing unlocking and locking. In addition to the aforementioned structure, the inner drive shaft 201, the drive base 202 and the dial wheel 4 can also be assembled by other clamping structures or by using screws and other connecting parts.

[0043] In some embodiments, the clutch mechanism 5 includes a drive motor 501, an axial transmission component, a first clutch component 504, and a second clutch component 505; the axial transmission component is connected to the output end of the drive motor 501; the first clutch component 504 is fixedly connected to the axial transmission component; the first clutch component 504 is assembled to the transmission base 202, and the first clutch component 504 can move axially relative to the transmission base 202, and the two rotate synchronously in the circumferential direction; the second clutch component 505 is connected to the outer transmission shaft 101 and rotates synchronously; when the drive motor 501 is activated, the axial transmission component drives the first clutch component 504 to move axially and forms a transmission engagement with the second clutch component 505, so that the clutch mechanism 5 is in a closed state, realizing the torque transmission between the outer transmission mechanism and the inner transmission mechanism.

[0044] In this embodiment, the clutch mechanism 5 specifically includes a drive motor 501, an axial transmission component, a first clutch component 504, and a second clutch component 505. The four components work together to achieve a controllable transmission connection between the inner transmission mechanism and the outer transmission mechanism.

[0045] The axial transmission component establishes a transmission connection with the output end of the drive motor 501 to convert the rotational motion of the drive motor 501 into axial linear motion. The first clutch 504 is fixedly connected to the axial transmission component to ensure synchronous movement between the two. Simultaneously, the first clutch 504 is assembled with the transmission base 202 of the inner transmission mechanism. The first clutch 504 can move freely axially relative to the transmission base 202 and maintains a synchronous rotational relationship with the transmission base 202 in the circumferential direction. That is, when the transmission base 202 rotates, it can drive the first clutch 504 to rotate synchronously in the circumferential direction, and the axial movement is not interfered with. For example, the surface of the first clutch 504 is distributed with several axial ribs 509, and the inner wall of the transmission base 202 is correspondingly distributed with several axial grooves 2021. The first clutch 504 is axially movable and passes through the inner hole of the transmission base 202, with each axial rib 509 inserted into the corresponding axial groove 2021.

[0046] The second clutch 505 is connected to the inner end 1012 of the outer drive shaft 101, and the two form a synchronous rotational engagement. The circumferential rotation of the outer drive shaft 101 can be directly transmitted to the second clutch 505, ensuring the rotational consistency between the outer drive mechanism and the second clutch 505.

[0047] When outdoor authorized unlocking is required, the drive motor 501 receives the control command and starts its operation. The output end of the drive motor 501 drives the axial transmission component to move, which converts the rotational motion into axial driving force. This force drives the first clutch 504, which is fixed to it, to move axially toward the second clutch 505 until the first clutch 504 and the second clutch 505 form a transmission engagement. At this time, the clutch mechanism 5 is in the closed state. When the outer handle 1 rotates in the second direction, the torque is transmitted to the transmission base 202 through the outer transmission shaft 101, the second clutch 505, and the first clutch 504. Then, it is transmitted to the dial wheel 4 through the transmission base 202, causing the dial wheel 4 to rotate and unlock.

[0048] When outdoor unlocking access is not required, the drive motor 501 reverses, causing the axial transmission component to move in the opposite direction. This pulls the first clutch 504 away from the second clutch 505 along the axial direction. The first clutch 504 and the second clutch 505 disengage from the transmission engagement, the clutch mechanism 5 returns to the disengaged state, and the external transmission mechanism and the internal transmission mechanism return to an independent state. The external handle 1 maintains a one-way anti-lock and reverse free rotation safety mode.

[0049] This embodiment achieves precise and controllable opening and closing of the clutch mechanism 5 through the reasonable configuration of the drive motor 501, axial transmission component, first clutch component 504 and second clutch component 505. The transmission coordination is stable and reliable, the axial transmission action is sensitive, and it can quickly respond to authorized unlocking commands. At the same time, it ensures the transmission isolation effect in the unauthorized state, further enhancing the security protection performance and ease of use of the lock cylinder A.

[0050] Furthermore, the drive motor 501 is configured to reverse after receiving a reset command, causing the first clutch 504 and the second clutch 505 to disengage. Specifically, the reset command is generated based on at least one of the following conditions: A. The clutch mechanism 5 is closed for a preset duration; B. The dial 4 reaches the unlocked position; C. The user inputs a reset operation command.

[0051] For example, a reset command can be generated using condition A, i.e., a delay control can be employed. A fixed delay duration can be preset, such as 3 seconds or 5 seconds, or the user can adjust the delay parameter according to their needs. When an outdoor person inputs an unlock command, they can rotate the outer handle 1 in the second direction to unlock the lock within the preset delay duration. If no action is taken within the time limit, or if the unlocking action is completed, the delay control timing ends, automatically generating a reset control signal to control the drive motor 501 to reverse and disengage the clutch mechanism 5. The delay control achieves automatic reset of the clutch mechanism 5, avoiding security risks caused by forgetting to close the authorized state, and further enhancing the security of the lock.

[0052] The main control component, power supply component, and delay unit of the drive motor 501 can be installed in the inner handle 2. A window 2031 can be formed on the inner drive shaft 201. The main control component, power supply component, etc. are electrically connected to the drive motor 501 through the window 2031. This can prevent the electronic components from being damaged when placed outdoors, thus affecting the use of the lock.

[0053] In some embodiments, the axial transmission component is a transmission assembly that converts the rotational motion of the drive motor 501 into axial linear motion, and the linear motion output end of the transmission assembly is fixedly connected to the first clutch 504. The transmission assembly can be a lead screw, rack and pinion, cam linkage, or electromagnetic push rod, etc. In this embodiment, the axial transmission component is preferably a lead screw 502 transmission assembly, including a lead screw 502 and a lead screw nut 503; the lead screw nut 503 cooperates with the lead screw 502 and moves axially when the lead screw 502 rotates; the lead screw nut 503 is fixedly connected to the first clutch 504.

[0054] One end of the lead screw 502 is connected to the output end of the drive motor 501. When the drive motor 501 starts, it can drive the lead screw 502 to rotate synchronously. The lead screw nut 503 is sleeved on the outside of the lead screw 502. The internal thread of its inner wall meshes with the external thread of the lead screw 502. When the lead screw 502 rotates under the drive of the drive motor 501, the axial component force generated by the thread engagement drives the lead screw nut 503 to move linearly along the axis of the lead screw 502, thereby driving the first clutch 504 fixed thereto to move axially synchronously.

[0055] When outdoor unlocking is required, the drive motor 501 receives a control command and starts, driving the lead screw 502 to rotate forward. The lead screw 502 drives the lead screw nut 503 to move axially toward the second clutch 505, simultaneously causing the first clutch 504 to approach and engage with the second clutch 505. The clutch mechanism 5 is in a closed state, and the outer handle 1 can unlock by rotating in the second direction. When outdoor unlocking is not required, the drive motor 501 starts and drives the lead screw 502 to rotate in the reverse direction. The lead screw 502, through the lead screw nut 503, pulls the first clutch 504 away from the second clutch 505, the clutch mechanism 5 is disengaged, and the outer handle 1 returns to the one-way locking and reverse free-rotation mode.

[0056] Furthermore, a washer 507 is installed at the front end of the drive motor 501, and a buffer elastic element 508, generally a compression spring, is sleeved on the lead screw. Its two ends abut against the washer 507 and the lead screw nut 503, respectively. When the drive motor 501 controls the lead screw nut 503 to retract and reset, the compression spring generates an elastic holding force. The drive motor 501 receives the resistance signal and stops moving in time, resetting the lead screw nut 503 to the ideal position.

[0057] In some embodiments, when the clutch mechanism 5 is in the closed state, the outer handle 1 rotates in the second direction, and the torque is transmitted to the dial wheel 4 through the second clutch 505, the first clutch 504, and the transmission base 202, so as to drive the dial wheel 4 to rotate.

[0058] The first clutch 504 and the second clutch 505 employ a mutually compatible one-way ratchet tooth surface structure, with complementary tooth surface profiles. This is consistent with the way the aforementioned one-way transmission component 102 engages with the dial wheel 4. However, the ratchet tooth surface of the second clutch 505 faces the opposite direction to that of the one-way transmission ratchet. This ensures that the one-way transmission component 102 transmits the torque for rotating the outer handle 1 in the first direction to the dial wheel 4, while the second clutch 505 transmits the torque for rotating the outer handle 1 in the second direction to the dial wheel 4. To unlock outdoors, the drive motor 501 controls the engagement of the first clutch 504 and the second clutch 505, transmitting the rotation of the outer handle 1 in the second direction to the dial wheel 4, thus unlocking the door.

[0059] Furthermore, the second clutch 505 is axially movable on the outer drive shaft 101, and the second clutch 505 is provided with an auxiliary elastic element 506, which applies a force to the second clutch 505 toward the first clutch 504.

[0060] For example, the outer drive shaft 101 has a second step 1014 at one end of its inner end 1012. The inner end of the outer drive shaft 101 can be fitted with a screw or other limiting structure. The second clutch 505 is axially movable and sleeved on the outer drive shaft 101, positioned between the second step 1014 and the screw, thereby controlling its axial displacement stroke. Simultaneously, the auxiliary elastic element 506 is a compression spring, with one end abutting against the second step 1014 and the other end abutting against the second clutch 505, applying a force towards the first clutch 504. The inner hole of the second clutch 505 is a regular polygon, and the inner end 1012 of the outer drive shaft 101 is a matching regular prism. The second clutch 505 can move axially along the outer drive shaft 101, but the two can also rotate synchronously.

[0061] If the outer handle 1 rotates in the first direction (reverse lock) when the clutch mechanism 5 is closed, the one-way ratchet teeth of the first clutch 504 and the second clutch 505 cannot form an effective meshing transmission due to structural limitations. The second clutch 505 slips relative to the first clutch 504 and generates a certain amount of retraction. The torque cannot be transmitted to the first clutch 504 and the transmission base 202. Only the outer transmission shaft 101 drives the second clutch 505 to rotate freely, avoiding malfunction of the lock cylinder A due to misoperation. When the operation is canceled, the second clutch 505 resets under the action of the auxiliary elastic element 506. In addition, during the meshing process of the first clutch 504 and the second clutch 505, the second clutch 505 can achieve better meshing through rotation and axial movement, and the stability of the meshing is ensured by the action of the auxiliary elastic element 506.

[0062] In some embodiments, the transmission base 202 is connected to the outer end of the inner transmission shaft 201, and the transmission base 202 and the inner transmission shaft 201 form a communicating inner cavity 203. The drive motor 501 of the clutch mechanism 5 is located in the inner cavity 203 and fixed to the transmission base 202.

[0063] The transmission base 202 is fixed to the outer end of the inner transmission shaft 201 (the end near the dial 4). The two are arranged coaxially and form an interconnected hollow cavity 203. The cavity 203 is adapted to the drive motor 501, realizing the built-in installation of the drive motor 501. The drive motor 501 is fixed to the transmission base 202 and rotates circumferentially. The two form a synchronous motion relationship, avoiding interference or loosening of the connection due to relative motion, while not affecting the working stability of the drive motor 501 itself.

[0064] A lock is provided, comprising a lock body and a bolt disposed within the lock body. The lock body is equipped with a lock cylinder A as described in any of the preceding claims. A dial 4 of the lock cylinder A is driven by the bolt. An inner handle 2 controls the bolt to unlock and lock via the dial 4. When the clutch mechanism 5 is not closed, the outer handle 1 can rotate in a first direction to drive the bolt to lock via the dial 4, and rotate freely in a second direction. When the clutch mechanism 5 is closed, the outer handle 1 can drive the bolt to unlock via the dial 4.

[0065] The lock includes a lock body and a bolt that is movably installed inside the lock body. The bolt is controlled by a dial 4 to unlock and lock the door. The inner handle 2 of the lock cylinder A extends to the inside of the lock body for easy operation by people inside. The outer handle 1 of the lock cylinder A is located on the outside of the lock body and is controlled by the user through a clutch mechanism 5 to adjust its access.

[0066] When the clutch mechanism 5 of lock cylinder A is not closed, lock cylinder A maintains its normal installation mode. At this time, outdoor personnel can only rotate in the first direction to complete the deadbolt action. If they rotate in the second direction (opposite to the first direction), it will cause free rotation. The lock tongue remains in its original state, effectively preventing external force from prying open the lock and ensuring safety.

[0067] When the clutch mechanism 5 of lock cylinder A receives the user's authorization command and is in the closed state, the internal transmission mechanism of lock cylinder A forms a transmission connection with the external transmission mechanism. At this time, the person outside rotates the handle in the second direction, and the torque of the external handle 1 is transmitted to the dial 4 to realize the unlocking function on the outside side.

[0068] Furthermore, the lock is also equipped with an unlocking authority control component, which is electrically connected to the drive motor 501 of the clutch mechanism 5, and is used to receive external unlocking commands and control the opening and closing of the clutch mechanism 5.

[0069] The unlocking access control component can be integrated into the lock body surface or independently placed on the door or in a suitable surrounding location. It features command reception, signal processing, and control output functions, and can recognize legitimate external unlocking commands, such as passwords, fingerprints, NFC sensing, and remote mobile phone commands. It can be implemented using a keypad or touchscreen. When a user inputs or triggers a legitimate unlocking command through the unlocking access control component, the component verifies the command, generates a control signal, and transmits it to the drive motor 501 via electrical connections, controlling the drive motor 501 to start operating.

[0070] After receiving the control signal, the drive motor 501 drives the first clutch 504 to move toward the second clutch 505 through the axial transmission component, so that the clutch mechanism 5 is closed, and the outdoor door can be unlocked at this time; after the door is unlocked, the drive motor 501 moves in the opposite direction, so that the clutch mechanism 5 is disengaged.

[0071] A method for locking a door lock from the outside and authorizing its unlocking is provided. This method is applied to the aforementioned lock and includes the following steps: In the default state where the clutch mechanism 5 is not closed, rotating the outer handle 1 causes it to move in the first direction, and the outer transmission mechanism transmits torque to the dial 4, driving the locking tongue to complete the anti-locking; in the default state where the clutch mechanism 5 is not closed, rotating the outer handle 1 causes it to move in the second direction, and the outer transmission mechanism and the dial 4 form free rotation, while the dial 4 remains stationary, realizing anti-theft protection in the unauthorized state.

[0072] The unlocking authorization control component receives valid authorization information. After successful verification, it sends a control signal to the drive motor 501. The drive motor 501 then operates and drives the clutch mechanism 5 to close, thus establishing a transmission connection between the external transmission mechanism and the internal transmission mechanism. Valid authorization information can be selected from the following methods: inputting a verification code via a keypad, verifying fingerprint or facial information using a biometric module, obtaining authorization through near-field communication, or receiving a remote unlocking command from a mobile terminal via Bluetooth or Wi-Fi.

[0073] When the clutch mechanism 5 is closed, rotating the outer handle 1 causes it to move in the second direction. The torque is transmitted sequentially through the outer transmission mechanism, the clutch mechanism 5, and the inner transmission mechanism to the dial wheel 4, which drives the lock tongue to complete the unlocking action. When the unlocking action is completed, the drive motor 501 receives a reset command and rotates in reverse, causing the clutch mechanism 501 to disengage, and the outer handle 1 returns to the default one-way deadbolt and reverse free-running working mode. The reset command can be generated upon the expiration of a preset authorized time period, detection of the bolt reaching the unlock position, or receipt of a user-issued command.

[0074] In summary, this invention provides a lock cylinder A, a lock with the lock cylinder A, and an unlocking method. The lock cylinder A includes an inner handle 2, a dial 4, an outer transmission mechanism, an inner transmission mechanism, and a clutch mechanism 5. The outer handle 1 is unidirectionally driven by the outer transmission mechanism and the dial 4. Rotating in the first direction can lock the lock, while rotating in the second direction prevents prying. The inner handle 2 can bidirectionally control the dial 4. The inner handle 2 and the outer handle 1 are controllably connected by the clutch mechanism 5. When closed, the outer handle 1 can drive the dial 4 to unlock in the second direction. This solution balances the convenience and security of outdoor locking and has strong applicability.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A lock cylinder with an outdoor deadbolt function, comprising a housing, an outer handle, and an inner handle, wherein a dial is installed in the housing, characterized in that: The lock cylinder also includes an external transmission mechanism, an internal transmission mechanism, and a clutch mechanism; The outer handle forms a one-way transmission engagement with the dial wheel through the outer transmission mechanism; when the outer handle rotates in the first direction, it drives the dial wheel to rotate, and when it rotates in the second direction, it forms an idle engagement with the dial wheel. The inner handle forms a bidirectional transmission connection with the dial wheel through the inner transmission mechanism; The inner transmission mechanism and the outer transmission mechanism are connected by a clutch mechanism to achieve a controllable transmission connection. When the clutch mechanism is closed, the outer handle can drive the dial wheel to rotate in the second direction, and when the outer handle rotates in the first direction, it still drives the dial wheel through the outer transmission structure.

2. The lock cylinder with outdoor deadbolt function as described in claim 1, characterized in that: The external transmission mechanism includes an external transmission shaft, an elastic reset component, and a one-way transmission component; The one-way transmission component can move axially along the outer transmission shaft; the elastic reset component provides elastic preload to the one-way transmission component, so that the one-way transmission component normally maintains a one-way transmission engagement with the dial wheel; when the one-way transmission component rotates with the outer transmission shaft in the second direction, it can rotate circumferentially relative to the dial wheel and retract axially to achieve a free-spinning engagement; after the rotational force is removed, the one-way transmission component is axially reset under the action of the elastic reset component, and re-maintains a one-way transmission engagement with the dial wheel.

3. The lock cylinder with outdoor deadbolt function as described in claim 2, characterized in that: The one-way transmission component and the dial wheel are engaged by a one-way ratchet tooth surface.

4. The lock cylinder with outdoor deadbolt function as described in claim 2, characterized in that: The external drive shaft is fixedly connected to the external handle and rotates synchronously.

5. The lock cylinder with outdoor deadbolt function as described in claim 2, characterized in that: The elastic reset element is a compression spring sleeved on the external drive shaft.

6. The lock cylinder with outdoor deadbolt function as described in claim 1, characterized in that: The internal transmission mechanism includes an internal transmission shaft and a transmission base that are fixed to each other. The internal transmission shaft is fixedly connected to the internal handle, and the transmission base is fixedly connected to the dial wheel, so as to realize that the internal handle drives the dial wheel in both directions.

7. The lock cylinder with outdoor deadbolt function as described in claim 1, characterized in that: The clutch mechanism includes a drive motor, an axial transmission component, a first clutch component, and a second clutch component; The axial transmission component is connected to the output end of the drive motor; the first clutch component is fixedly connected to the axial transmission component; the first clutch component is connected to the transmission base, and the first clutch component can move axially relative to the transmission base, and the two rotate synchronously in the circumferential direction. The second clutch is connected to the outer drive shaft and rotates synchronously; When the drive motor is activated, the axial transmission component drives the first clutch component to move axially and forms a transmission engagement with the second clutch component, so that the clutch mechanism is in a closed state, thereby realizing the torque transmission between the outer transmission mechanism and the inner transmission mechanism.

8. The lock cylinder with outdoor deadbolt function as described in claim 7, characterized in that: The drive motor is configured to rotate in reverse after receiving a reset command, thereby causing the first clutch component to separate from the second clutch component.

9. The lock cylinder with outdoor deadbolt function as described in claim 8, characterized in that: The reset command is generated based on at least one of the following conditions: A. The clutch mechanism closes for a preset duration; B. The dial reaches the unlock position; C. The user inputs a reset command.

10. The lock cylinder with outdoor deadbolt function as described in claim 7, characterized in that: The axial transmission component is a transmission assembly that converts the rotational motion of the drive motor into axial linear motion, and the linear motion output end of the transmission assembly is fixedly connected to the first clutch component.

11. The lock cylinder with outdoor deadbolt function as described in claim 7, characterized in that: The first clutch and the second clutch are mutually cooperating one-way ratchet tooth surface structures; when the clutch mechanism is in the closed state, the outer handle rotates in the second direction, and the torque is transmitted to the dial wheel through the second clutch, the first clutch, and the transmission base to drive the dial wheel to rotate.

12. The lock cylinder with outdoor deadbolt function as described in claim 11, characterized in that: The second clutch is axially movable and mounted on the outer drive shaft. The second clutch is equipped with an auxiliary elastic element, which applies an elastic force toward the first clutch to the second clutch.

13. The lock cylinder with outdoor deadbolt function as described in claim 11, characterized in that: The transmission base is connected to the outer end of the inner transmission shaft, and the transmission base and the interior of the inner transmission shaft form a communicating cavity. The drive motor of the clutch mechanism is located in the cavity and fixed to the transmission base.

14. The lock cylinder with outdoor deadbolt function as described in claim 13, characterized in that: The first clutch component and the transmission base are in sliding engagement with axial ribs and axial grooves.

15. A lock, comprising a lock body and a bolt disposed within the lock body, characterized in that: The lock body is provided with a lock cylinder as described in any one of claims 1-14, and the lock cylinder's dial is engaged with the lock tongue in a driving cooperation. The inner handle controls the locking tongue via the dial to achieve unlocking and locking; When the clutch mechanism is not closed, the outer handle can rotate in the first direction to drive the locking tongue through the dial to complete the anti-locking, and rotate freely in the second direction; when the clutch mechanism is closed, the outer handle can drive the locking tongue through the dial to unlock.

16. The lock as described in claim 15, characterized in that: The lock is also equipped with an unlocking authority control component, which is electrically connected to the drive motor of the clutch mechanism and is used to receive external unlocking commands and control the opening and closing of the clutch mechanism.

17. A method for locking a door lock from the outside and authorizing its unlocking, characterized in that: The method, applied to the lock of claim 16, includes the following steps: In the default state where the clutch mechanism is not closed, rotating the outer handle causes it to move in the first direction, and the outer transmission mechanism transmits torque to the dial wheel, which drives the locking tongue to complete the anti-locking process. In the default state where the clutch mechanism is not closed, rotating the outer handle causes it to move in the second direction, creating free rotation between the outer transmission mechanism and the dial wheel, while the dial wheel remains stationary, thus achieving anti-theft protection in the unauthorized state. The unlocking authorization control component receives valid authorization information, and after successful verification, sends a control signal to the drive motor. The drive motor runs and drives the clutch mechanism to close, so that the outer transmission mechanism and the inner transmission mechanism form a transmission connection. With the clutch mechanism closed, rotating the outer handle causes it to move in the second direction. The torque is transmitted sequentially through the outer transmission mechanism, the clutch mechanism, and the inner transmission mechanism to the dial wheel, which drives the lock tongue to complete the unlocking action. When the unlocking action is completed, the drive motor receives a reset command and rotates in reverse, causing the clutch mechanism to disengage, and the outer handle returns to the default one-way deadbolt and reverse idle working mode.

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