A manual and automatic lock

Abstract

A manual-automatic lock comprises: a main lock tongue, an intermediate handle, a lock core handle, and a main drive disk, characterized in that transmission is achieved between the intermediate handle and the main drive disk through a first differential mechanism, the first differential mechanism comprises a first arcuate groove and a first protrusion that can extend into the first arcuate groove, and the beneficial technical effects of the present invention are: first, the intermediate handle can be driven by both a driving device and a handle or a lock core handle; second, the intermediate handle and the main lock tongue can always maintain a connection relationship; third, an avoidance space is formed between the main drive disk and the intermediate handle, so that the intermediate handle does not need to drive the driving device when it is reversed, and the handle or the lock core handle can achieve manual unlocking with less force; fourth, the coaxially arranged intermediate handle and the main drive disk have a simple structure and a stable transmission structure.

Description

Technical Field

[0001] The present invention relates to the technical field related to locks, and in particular to a lock having an electric drive device and a manual drive device capable of realizing automatic locking, unlocking and manual unlocking. Background Art

[0002] With the advancement of science and technology, traditional locks have been gradually replaced by automatic electronic locks. The built-in drive devices of most automatic electronic locks on the market generally use motors with reduction gearboxes. After adjustment through the reduction gearbox, the motor can reduce the speed of the output end and output a large torque to ensure that the lock tongue driven by it can be effectively extended or retracted at a reasonable speed. However, due to the reduction gearbox, it is very difficult and laborious to drive the motor to rotate through an external manual component (such as a handle). In order to enable the automatic electronic lock to have both the functions of electric locking and unlocking and the ability to manually unlock, the lock must not only have an automatic drive part and a manual drive part, but also must coordinate the actions of the mechanisms of these two parts to achieve manual drive. For example, the publication number of the inventor's earlier application is CN The Chinese invention patent 109881988A entitled "Lock with emergency unlocking structure" discloses a lock with automatic and manual functions, which includes a lock body, the lock body includes a lock shell, a square tongue assembly for locking, a first lever arm for driving the square tongue assembly to lock and unlock, and an electric mechanism for driving the first lever arm to rotate, the first lever arm drives the square tongue assembly to lock or unlock in a toggle manner; it also includes a second lever arm for driving the square tongue assembly to lock and unlock and a manual driving mechanism for driving the second lever arm to rotate, the second lever arm is rotatably arranged in the lock shell or directly connected Connected to the manual drive mechanism, when the manual drive mechanism is combined with the lock body, the second lever arm can be driven by the manual drive mechanism to drive the tongue assembly to lock or unlock in a toggle manner. After the electric mechanism drives the first lever arm to complete locking or unlocking, it further drives the first lever arm to disengage from the tongue assembly and allows the first lever arm to stay in a safe position. The first lever arm stays in a safe position so that the first lever arm can avoid the tongue assembly at this time. The manual drive mechanism is used to utilize the first lever arm to stay in a safe position to drive the tongue assembly to move through the second lever arm to lock or unlock. The above technical solution mainly utilizes the first lever arm to cooperate with the first recess on the side of the tongue assembly to drive the tongue assembly to lock or unlock, but it is obvious that the first lever arm must be rotated at least more than 360° to achieve locking or unlocking, and the long rotation stroke makes the door opening and closing speed slow. Summary of the invention

[0003] In order to solve the problem of slow door opening and closing speed in the above CN 109881988A patent application, the present invention first improves the way of toggling the square tongue assembly to increase its locking and unlocking speed, and secondly further improves how to use the door handle or lock core to unlock and unlock in an emergency situation without conflict between these mechanisms, and further improves how to lock or unlock the lock body containing the oblique tongue synchronously. To this end, the present invention first proposes a manual-automatic lock, including:

[0004] Main lock tongue, used to lock the door leaf;

[0005] An intermediate handle, arranged on one side of the main lock tongue, for driving the main lock tongue to extend or retract in response to the driving force of the handle;

[0006] A lock core lever, arranged on the other side of the main lock tongue, for driving the main lock tongue to extend or retract in response to the driving force of the lock core;

[0007] A main drive plate is coaxially mounted with the intermediate handle and is used to drive the intermediate handle to rotate clockwise or counterclockwise to drive the main lock tongue to extend or retract;

[0008] A driving device, meshingly connected with the main driving disk, and used to drive the main driving disk to rotate clockwise or counterclockwise according to instructions;

[0009] The invention is characterized in that transmission is achieved between the intermediate dial handle and the main driving disk through a first differential mechanism, the first differential mechanism includes a first arcuate groove and a first protrusion that can extend into the first arcuate groove, the effective stroke defined by the first arcuate groove is greater than the width of the first protrusion, the first arcuate groove and the first protrusion are respectively arranged on the intermediate dial handle and the main driving disk, so that through the cooperation between the first arcuate groove and the first protrusion, not only transmission is formed between the intermediate dial handle and the main driving disk, but also a first stroke difference of relative rotation is formed, the first stroke difference is used for providing an avoidance space for the main driving disk to rotate in the opposite direction relative to the intermediate dial handle when the main driving disk rotates with the intermediate dial handle to drive the main lock tongue to extend, and when the main driving disk is driven by the driving device to automatically rotate in the opposite direction relative to the intermediate dial handle to form the avoidance space, the main lock tongue can be manually retracted.

[0010] Among them, the main lock tongue is a component that can be extended or retracted and is arranged in the housing of the lock, commonly known as a square tongue; the main lock tongue can be partially extended out of the housing of the lock under the action of the middle handle, lock core handle and other driving components and combined with the opposite lock box to achieve door leaf locking.

[0011] Among them, the intermediate handle is a component used to transmit the driving force of the main driving disk or the handle combining shaft to be mentioned below to open or lock the door to drive the main lock tongue to extend or retract, that is, the intermediate handle can be driven by the handle combining shaft to realize manual operation, and can also be driven by the driving device to realize automatic operation. The intermediate handle becomes an intermediate connecting component connecting the main lock tongue with the manual driving mechanism and the electric mechanism.

[0012] The main drive disc forms a meshing transmission connection with the output end of the driving device through the tooth structure provided thereon, and the main drive disc is also coaxially installed with the intermediate handle and can rotate the intermediate handle clockwise or counterclockwise. Since the output end of the driving device is generally a gear reduction mechanism, if the power is cut off and the intermediate handle or the main drive disc needs to be rotated, they are blocked by the driving device in the reverse direction, and the rotation resistance is very large, and the rotation is very difficult. Therefore, in order to solve this technical problem, the present invention solves the problem by providing the first stroke difference between the main drive disc and the intermediate handle.

[0013] The driving device is the power source for the lock to automatically lock or unlock. The driving device is connected to the controller signal mentioned below, and drives the main drive disk to rotate clockwise or counterclockwise under the control of the signal command of the controller to realize automatic control of the lock. In one embodiment, the driving device includes a motor, a reduction gear box, and an output gear connected to the output end of the reduction gear box, and the output gear rotates and meshes with the main drive disk for transmission connection; in another embodiment, the driving device includes a motor, a reduction gear box, and a screw connected to the output end of the reduction gear box, a nut is installed on the screw, and a rack is fixedly connected to the nut, and the rack can move back and forth and meshes with the main drive disk for transmission connection.

[0014] The first differential mechanism includes a first arc groove and a first protrusion, and the first arc groove and the first protrusion are respectively arranged on the intermediate lever and the main drive disk. The specific implementation methods include the following two types: the first type, the first arc groove is arranged on the intermediate lever, and the first protrusion is arranged on the main drive disk; the second type, the first arc groove is arranged on the main drive disk, and the first protrusion is arranged on the intermediate lever. The first protrusion extends into the first arc groove, and the intermediate lever can be driven by rotating the main drive disk.

[0015] Among them, the effective stroke defined by the first arc groove means that the extension length of the first arc groove is greater than the width of the first protrusion, the first protrusion can move in the first arc groove, and the maximum stroke that the first protrusion can move in the first arc groove relative to the first arc groove defines its effective stroke in the first arc groove; since the main driving disk and the intermediate handle are coaxially installed and can rotate relative to each other, the effective stroke can be measured by the arc length or rotation angle of the first protrusion relative to the first arc groove.

[0016] The first stroke difference refers to a stroke of relative movement between the first protrusion and the first arc groove, and the first stroke difference may be less than or equal to the effective stroke defined by the first arc groove. There are at least two interpretations of this: first, the intermediate handle can be used as an active component to rotate relative to the main drive disk, or the main drive disk can be used as an active component to rotate relative to the intermediate handle, and the main drive disk or the intermediate handle can independently rotate the first stroke difference and will not drag with the other component after rotation; second, the intermediate handle or the main drive disk can be combined with the other component and rotate together after relative rotation by the first stroke difference.

[0017] Among them, the first stroke difference is used to provide a clearance space for the main drive disk to rotate in the opposite direction relative to the intermediate handle when the main drive disk rotates with the intermediate handle to drive the main lock tongue to extend, and when the main drive disk is driven by the driving device to automatically rotate in the opposite direction relative to the intermediate handle to form the clearance space, the main lock tongue can be manually retracted. This includes the following explanations: First, the automatic locking function, the driving device drives the main drive disk to rotate, the main drive disk can be combined with the intermediate handle to rotate together, and the rotating intermediate handle drives the main lock tongue to extend to achieve automatic locking. Second, the automatic avoidance function, after completing the automatic locking action, the main drive disk is driven by the driving device to rotate in the opposite direction to provide a clearance space for the reverse rotation of the intermediate handle. Third, the automatic unlocking function, after the main drive disk rotates in the opposite direction to form the clearance space, the main drive disk can continue to rotate and then combine with the intermediate handle and rotate in the opposite direction together to retract the main lock tongue to achieve automatic unlocking. Fourth, the manual unlocking function. After the main drive disk rotates in the reverse direction to create the avoidance space, on the one hand, the intermediate handle can also respond to the driving force of the handle to achieve reverse rotation, thereby driving the main lock tongue to be retracted for manual unlocking. On the other hand, the lock core handle can also respond to the driving force of the lock core to drive the main lock tongue to be retracted for manual unlocking. Whether the manual unlocking is performed through the handle or the lock core handle, the intermediate handle needs to be rotated. Since the intermediate handle does not need to rotate with the main drive disk (i.e., there is no need to reverse drive the drive device), manual unlocking can be achieved with only a small amount of force. It should be noted that in order to achieve manual unlocking, the reverse rotation angle of the main drive disk only needs to meet the unlocking rotation angle that allows the intermediate handle to drive the main lock tongue to be retracted.

[0018] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are: first, the intermediate handle can be driven by the driving device as well as by the handle or the lock core handle, so that the lock has the functions of automatic drive and manual drive at the same time; second, the intermediate handle and the main lock tongue can always maintain a connection relationship, and through the first differential mechanism arranged on the intermediate handle and the main drive disk, the switching between automatic drive and manual drive only requires rotating the first stroke difference to drive the main lock tongue to extend or retract, and the maximum rotation angle of the main drive disk defined by the first stroke difference is no more than 180°, which is different from the existing CN Compared with Patent No. 109881988A, the rotation stroke is greatly shortened, which is beneficial to improving the action time of the lock; thirdly, the avoidance space is formed between the main drive disk and the intermediate handle, so that the intermediate handle does not need to drive the driving device when reversing, and the handle or the lock core handle can be manually unlocked with less force, which is beneficial to improving the convenience of unlocking the lock and ensuring that the lock can be unlocked by manual drive in an emergency; fourthly, the coaxially arranged intermediate handle and main drive disk not only have a simple structure and a stable transmission structure, but also are beneficial to ensuring that the main lock tongue can be effectively driven to extend or retract.

[0019] In order to allow the handle to be reset to the initial position after manual locking is completed, and the lock remains in the locked state after the handle is reset. A further technical solution may also be that the lock further includes a handle combination shaft, the handle combination shaft is coaxially installed with the main drive disk and the intermediate handle, and the handle combination shaft is used to transmit the driving force of the handle to the intermediate handle; the intermediate handle and the handle combination shaft are driven by a second differential mechanism, the second differential mechanism includes a second arc groove and a second protrusion that can extend into the second arc groove, the effective stroke defined by the second arc groove is greater than the width of the second protrusion, the second arc groove and the second protrusion are respectively arranged on the intermediate handle and the handle combination shaft, so that the cooperation between the second arc groove and the second protrusion not only forms a transmission between the intermediate handle and the handle combination shaft, but also has a second stroke difference of relative rotation, and the second stroke difference is used to reset the handle combination shaft after the handle combination shaft rotates with the intermediate handle to open the door.

[0020] The handle combination shaft is a transmission component for connecting the intermediate lever and the handle. By rotating the handle, the handle combination shaft can be driven to rotate and then drive the intermediate lever. However, since the first differential mechanism has the first stroke difference, the handle combination shaft can drive the intermediate lever to rotate alone. The reset of the handle combination shaft means that the handle combination shaft can be rotated back to the original starting position after being rotated to a specified position by the handle. Since the handle is generally in a horizontal direction, the handle combination shaft is also in a relatively stable horizontal position during use, that is, the starting position.

[0021] The second arc groove can be arranged on the intermediate handle, and the second protrusion can be arranged on the handle combination shaft; or the second protrusion can be arranged on the intermediate handle, and the second arc groove can be arranged on the handle combination shaft. The second stroke difference refers to a stroke of relative movement of the second protrusion in the second arc groove, and the second stroke difference can be less than or equal to the effective stroke defined by the second arc groove; but the second stroke difference should not be less than the stroke of the intermediate handle driving the main lock tongue to extend or retract. Due to the second stroke difference, when the main drive disk drives the main lock tongue to extend or retract with the intermediate handle, the intermediate handle can not drive the hand combination shaft, that is, the handle is always kept in the starting position during the process of the automatic drive mechanism implementing locking and unlocking. Furthermore, a reset spring can be arranged between the handle combination shaft or the door handle and the lock housing, and the reset spring allows the handle combination shaft to reverse back to the starting position after completing the unlocking action. In a specific embodiment, the handle combination shaft and the handle are kept at the starting position under the action of the reset spring. After the driving device completes the locking action and drives the main driving disk to rotate in the opposite direction independently, the handle is rotated to drive the handle combination shaft to rotate in the opposite direction. The handle combination shaft is combined with the intermediate handle to form a transmission connection and drives the intermediate handle to rotate in the opposite direction, thereby driving the main lock tongue to be retracted to open the door. The handle is released, and the handle combination shaft drives the handle to reverse back to the starting position under the action of the reset spring. Due to the existence of the second stroke difference, the separation of the handle combination shaft from the intermediate handle during the reverse rotation only drives the handle to rotate back to the starting position, thereby keeping the lock in the locked state.

[0022] In addition to using the main lock bolt to lock the door leaf, the lock can also be provided with a latch bolt mechanism as a secondary locking mechanism. A further technical solution can also be that it also includes a flippable latch bolt and a plug-in that is rotatably arranged on the side of the latch bolt, the plug-in is connected to the main drive disk and the lock core handle, and the plug-in is used to move under the drive of the main drive disk or the lock core handle to further release the restriction on the rotation of the latch bolt. Wherein, the latch bolt is a component that can perform telescopic and flipping activities. When the flipped latch bolt is extended outward, it is used to temporarily lock the door (i.e., the windproof door). When the door leaf is pushed or pulled, the latch bolt can be flipped and retracted to achieve door opening; further, a latch bolt reset spring is included, and the latch bolt is kept extended outward by the latch bolt reset spring. Wherein, the plug-in is a component that is combined with the latch bolt to limit the flipping of the latch bolt. When the latch bolt is restricted from rotating, the latch bolt can only perform telescopic activities like an ordinary latch bolt. For example, when the door leaf is closed, the latch bolt is combined with the plug-in, and the door leaf is in a locked state and cannot be directly pushed open. At this time, a double locking structure is formed in cooperation with the main lock bolt. The main drive disk or the lock core handle can drive the plug-in, which means that the restriction on the rotation of the inclined tongue can be released through automatic control or manual control together with the retraction of the main lock tongue to open the door. This not only increases the function of temporarily locking the door leaf, but also greatly improves the safety of the lock.

[0023] Since the oblique bolt is provided, it is also necessary to release the rotation restriction of the oblique bolt synchronously when unlocking by the handle. A further technical solution may also include an oblique bolt shift fork, which is coaxially installed with the handle combination shaft, the main drive disk, and the intermediate shift handle. The oblique bolt shift fork is used to transmit the driving force of the handle combination shaft to the plug-in to further release the rotation restriction of the oblique bolt; and also includes a plug-in reset spring, which is used to drive the plug-in to reset to the position where it is plugged into the oblique bolt. In this way, when the handle is rotated to manually control the retraction of the main lock bolt, the handle combination shaft can drive the oblique bolt shift fork to push the plug-in to synchronously release the rotation restriction of the oblique bolt, which is conducive to ensuring the reliability of manual unlocking.

[0024] Since the rotation angle required to retract the main lock tongue and the rotation angle required to release the restriction of the plug-in may be different, the lock core handle can also release the restriction on the rotation of the latch bolt with the help of the transmission of the latch bolt fork. A further technical solution can also be that the transmission is realized by a third differential mechanism between the latch bolt fork and the handle combining shaft, and the third differential mechanism includes a third arc-shaped groove and a third protrusion that can extend into the third arc-shaped groove, and the effective stroke defined by the third arc-shaped groove is greater than the width of the third protrusion. The third arc-shaped groove and the third protrusion are respectively arranged on the latch bolt fork and the handle combining shaft, so that the cooperation between the third arc-shaped groove and the third protrusion not only forms transmission between the latch bolt fork and the handle combining shaft, but also has a third stroke difference of relative rotation. The third stroke difference is used when the handle combining shaft does not rotate and the latch bolt fork is pushed to rotate by the lock core handle, so that the latch bolt fork can rotate independently relative to the handle combining shaft to further push the plug-in. The third arc groove and the third protrusion are respectively arranged on the oblique tongue fork and the handle combination shaft, that is, the third arc groove can be arranged on the oblique tongue fork and the third protrusion can be arranged on the handle combination shaft, or the third arc groove can be arranged on the handle combination shaft and the third protrusion can be arranged on the oblique tongue fork. Through the third stroke difference between the oblique tongue fork and the handle combination shaft, the lock core handle can independently push the oblique tongue fork to rotate to release the restriction of the plug-in, and the handle combination shaft can drive the oblique tongue fork after rotating a certain stroke to achieve the simultaneous retraction of the main lock tongue and the release of the restriction of the plug-in on the oblique tongue, which satisfies the requirement of being able to unlock the lock using different manual mechanisms and greatly improves the reliability of the lock.

[0025] In order to better coordinate the automatic control mechanism of the lock, a further technical solution may also include a controller, which is used to drive the drive device to move, and when the main lock tongue is extended, control the main drive disk to reset to a default normal position with the help of the first stroke difference; the default normal position refers to the position of the main drive disk after the main lock tongue is extended, which allows the intermediate handle to independently move in the opposite direction for a stroke that allows the main lock tongue to be retracted. The controller can control the drive device to move forward or backward, and the controller can control the drive device and the main drive disk to perform a specified movement, which is conducive to ensuring the reliability of locking or unlocking the lock.

[0026] In order to allow the controller to control the rotation stroke of the main drive disk, the controller can also cooperate with the limit sensor connected to its signal to realize automatic locking, unlocking and rotating the main drive disk to a specified position. A further technical solution can also be that the lock also includes a door closing signal sensor, the door closing signal sensor responds to the signal of the door being fully closed and transmits the signal of the door being fully closed to the controller, and the controller is used to drive the drive device to move the main lock tongue to extend and lock according to the signal of the door being fully closed. A further technical solution can also be that the lock also includes a locking signal sensor, the locking signal sensor responds to the signal of the main lock tongue extending and locking and transmits the signal of the main lock tongue extending and locking to the controller, and the controller is used to control the main drive disk to return to the default normal position by means of the first stroke difference according to the signal of the main lock tongue extending and locking. A further technical solution can also be that the lock also includes a normal signal sensor, the normal signal sensor responds to the signal of the main drive disk resetting to the default normal position and transmits the signal of the main drive disk resetting to the default normal position to the controller, and the controller is used to control the main drive disk to stop according to the signal of the main drive disk resetting to the default normal position. A further technical solution may be that the lock also includes a door opening signal sensor, which responds to the door opening signal and transmits the door opening signal to the controller, and the controller is used to control the drive device to drive the main drive disk to reset to a default normal position according to the door opening signal.

[0027] Since the present invention has the above characteristics and advantages, it can be applied to manual-automatic locks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the exploded structure of a door leaf to which the lock is applied;

[0029] Figure 2 is a schematic diagram of the exploded structure of the lock;

[0030] Figure 3 is a schematic diagram of the structure of the lock in the front view direction;

[0031] Figure 4 is a structural schematic diagram of the main lock tongue in an extended state;

[0032] Figure 5 is a structural schematic diagram of the main lock tongue in a retracted state;

[0033] Figure 6 is a structural schematic diagram when the main drive disc rotates to a normal position;

[0034] Figure 7is a structural schematic diagram of the middle lever driving the main lock tongue to be retracted;

[0035] Figure 8 It is a schematic diagram of the exploded structure of the intermediate lever, the main drive disc and the handle combination shaft;

[0036] Fig. 9 is a schematic diagram of the structure of the intermediate handle in the axial direction;

[0037] Fig.10 is a schematic diagram of the structure of the handle in the axial direction of the combined shaft;

[0038] Fig.11 is a schematic diagram of the structure of the combination of the intermediate handle and the main drive disk, showing the state when the main drive disk rotates counterclockwise with the intermediate handle to achieve locking;

[0039] Fig.12 is a schematic diagram of the structure of the combination of the intermediate lever and the main drive disc, showing the state when the main drive disc rotates clockwise by itself by the first stroke difference;

[0040] Fig.13 is a schematic diagram of the structure of the middle lever and the handle combined with the shaft;

[0041] Fig.14 is a schematic diagram of the combined structure of the handle combined with the shaft and the oblique tongue fork;

[0042] Fig.15 It is a control flow chart of the lock. DETAILED DESCRIPTION

[0043] The manual-automatic lock has not only an automatic drive mechanism but also a manual drive mechanism. In order to further improve the reliability and smoothness of the switch between automatic and manual and ensure the convenience of using the lock, the structure of the manual-automatic lock using the technical solution of the present invention is further described below in conjunction with the accompanying drawings. Except for the embodiments that are clearly stated to be equivalent or optional, the various implementation details disclosed below can be selectively applied or combined in one embodiment even if there is no direct correlation or synergy in terms of function.

[0044] The present invention provides a manual-automatic lock, such as Figure 1 and Figure 2As shown, it includes an outer panel 17, an inner panel 18 and a lock body 19 installed on the door leaf 16, and the lock body 19 is installed in the door leaf 16 by screws, wherein the inner panel 18 is provided with a power box 181, a controller 15 and a door handle 14, and the outer panel 17 is provided with a command receiver (such as a touch panel 171 and / or a fingerprint scanner 172) connected to the signal of the controller 15, and the command receiver is used to receive the user's command signal and transmit the command signal to the controller 15. The user's command signal includes a door opening command signal and may also include a locking command signal. The lock body includes a housing 1, a main lock tongue 2 and a lock core handle 8. The housing 1 includes a front housing 11, a rear housing 12 and a side housing 13 connected between the front housing 11 and the rear housing 12. The front housing 11, the rear housing 12 and the side housing 13 define a housing cavity 10 together. A main lock tongue hole is provided on the side housing 13. The main lock tongue 2 is provided in the housing 11 and can be extended or retracted. At least part of the main lock tongue 2 can be extended out of the housing 11 through the main lock tongue hole to lock the door leaf. The lock core handle 8 is used to drive the main lock tongue 2 to extend or retract into the housing cavity 10 by turning the lock core with a key.

[0045] In order to realize automatic control of the main lock tongue 2 to move back and forth, a driving device 3 is also included, and the signal of the driving device 3 is connected to the controller 15. In the present embodiment, the driving device 3 is arranged in the shell cavity 10 and fixed on the shell 1. The driving device 3 comprises a motor 31, a reduction gear box 32 and an output gear 33 connected to the output end of the reduction gear box 32. The driving device 3 is the power source for the lock to realize automatic locking or unlocking. The high-speed output of the motor 31 is decelerated by the reduction gear box 32 and then outputted at a lower speed with the output gear 33 to stably drive the main lock tongue 2 to move. The controller 15 can control the motor 31 to rotate forward or reversely so as to realize the extension or retraction of the main lock tongue 2. As an equivalent embodiment, the output mode of the driving device 3 can be a reciprocating output in addition to the rotation output. The output end of the reduction gear box 32 of the driving device 3 is connected to a screw, a nut is installed on the screw, and a rack is fixedly connected to the nut. The driving device 3 drives the screw to rotate forward or reverse to drive the rack to move back and forth, thereby driving the main lock tongue 2 to extend or retract. The door handle 14 is used to manually drive the main lock tongue 2 to retract to achieve unlocking.

[0046] To further illustrate how the driving device 3 drives the main lock tongue 2 to extend for locking and retract for unlocking, Figure 2~Figure 9As shown, the lock also includes a main drive disk 4 meshing with the output gear 33 of the drive device 3 and connected to the main drive disk 4. Driven by the drive device 3, the main drive disk 4 can rotate clockwise or counterclockwise (the angle of the rotation trajectory is about 60°) and adapt to the rotation angle of the door handle 14. It also includes an intermediate handle 5 arranged on one side of the main lock tongue 2. The intermediate handle 5 is coaxially installed with the main drive disk 4, and a first differential mechanism is arranged on the intermediate handle 5 and the main drive disk 4. The intermediate handle 5 and the main drive disk 4 are driven by the first differential mechanism. The first differential mechanism includes a first arc groove 41 and a first protrusion 51 that can extend into the first arc groove 41. In this embodiment, the first arc groove 41 is arranged on the main drive disk 4, and the first protrusion 51 is arranged on the intermediate handle 5. As an equivalent embodiment, the first arc groove 41 is arranged on the intermediate handle 5, and the first protrusion 51 is arranged on the main drive disk 4. The outer end of the intermediate handle 5 is provided with a tooth structure, and a linkage block 21 is also provided in the housing cavity 10. The linkage block 21 is rotatably provided between the intermediate handle 5 and the main lock tongue 2. One end of the linkage block 21 is also provided with a tooth structure and is meshed with the intermediate handle 5. The other end of the linkage block 21 is connected to the main lock tongue 2 and can push the main lock tongue 2 to extend and retract. In this embodiment, when the driving device 3 drives the main driving disk 4 to rotate clockwise, the main driving disk 4 can drive the intermediate handle 5 to rotate clockwise and then drive the main lock tongue 2 to extend out of the housing 11 of the lock to achieve locking through the linkage block 21; on the contrary, when the driving device 3 drives the main driving disk 4 to rotate counterclockwise, the main driving disk 4 can drive the intermediate handle 5 to rotate counterclockwise and then drive the main lock tongue 2 to retract into the housing cavity 10 of the lock to achieve unlocking.

[0047] The lock can also be unlocked manually by means of the door handle 14 or the lock core handle 8. Figure 2~Figure 10 As shown, the lock also includes a handle combination shaft 6, which is coaxially installed with the main drive disk 4 and the intermediate handle 5, and is used to transmit the driving force of the door handle 14 to the intermediate handle 5. In this way, by rotating the door handle 14 in a counterclockwise direction, the handle combination shaft 6 and the intermediate handle 5 can be driven to rotate counterclockwise, and then the main lock tongue 2 is driven back to the housing cavity 10 of the lock through the linkage block 21 to achieve unlocking. The lock core handle 8 is arranged on the other side of the main lock tongue 2, and a recess 211 is arranged on the linkage block 21. The lock core handle 8 can extend into the recess 211 and drive the linkage block 21 to rotate, thereby moving the main lock tongue 2 back and forth.

[0048] In order to increase the locking and unlocking speed of the lock, and ensure that the automatic drive mechanism and the manual drive mechanism can be implemented smoothly. Figure 2 to Figure 12 As shown, the first arc groove 41 of the first differential mechanism is arranged on the main drive disk 4, and the first protrusion 51 is arranged on the intermediate handle 5. The effective stroke defined by the first arc groove 41 is greater than the width of the first protrusion 51. Through the cooperation between the first arc groove 41 and the first protrusion 51, not only the transmission is formed between the intermediate handle 5 and the main drive disk 4, but also a first stroke difference of relative rotation is provided. Among them, the first stroke difference refers to a stroke of relative movement of the first protrusion 51 in the first arc groove 41. The first stroke difference is used to provide an escape space for the main drive disk 4 to rotate in the opposite direction relative to the intermediate handle 5 when the main drive disk 4 drives the intermediate handle 5 to extend, and when the main drive disk 4 is driven by the driving device 3 and automatically rotates in the opposite direction relative to the intermediate handle 5 to form the escape space, the main lock tongue 2 can be manually retracted. Among them, the first stroke difference may not be completely consistent with the effective stroke defined by the first arc groove 41, and the reverse rotation angle of the main drive disk 4 satisfies the unlocking rotation angle that allows the intermediate handle 5 to drive the main lock tongue 2 to retract, and the first stroke difference is not greater than the effective stroke defined by the first arc groove 41; at the same time, in order to achieve unlocking, it is required that the first stroke difference cannot be less than the unlocking rotation angle of the intermediate handle 5. It can be seen that the intermediate handle 5 can be driven by the drive device 3 and the door handle 14 or the lock core handle 8, which allows the lock to have the functions of automatic drive and manual drive at the same time; secondly, the intermediate handle 5 and the main lock tongue 2 can always maintain a connection relationship, and through the first differential mechanism set on the intermediate handle 5 and the main drive disk 4, the switching between automatic drive and manual drive only needs to rotate the first stroke difference at most to drive the main lock tongue 2 to extend or retract to achieve locking or unlocking, which greatly shortens the rotation stroke compared with the existing CN 109881988A patent, which is conducive to improving the response time of the lock.

[0049] After manual locking is completed, the door handle 14 is generally required to be reset to the initial position (horizontal position), and the lock is required to remain in the locked state after the door handle 14 is reset. Figure 2 and Fig.13As shown, the transmission is realized between the intermediate handle 5 and the handle combination shaft 6 through the second differential mechanism, and the second differential mechanism includes a second arc groove 52 and a second protrusion 61 that can extend into the second arc groove 52. The second arc groove 52 and the second protrusion 61 are respectively arranged on the intermediate handle 5 and the handle combination shaft 6. In this embodiment, the second arc groove 52 is arranged on the intermediate handle 5, and the second protrusion 61 is arranged on the handle combination shaft 6. The effective stroke defined by the second arc groove 52 is greater than the width of the second protrusion 61. In this way, the cooperation between the second arc groove 52 and the second protrusion 61 not only forms the transmission between the intermediate handle 5 and the handle combination shaft 6, but also has a second stroke difference for relative rotation. The handle combination shaft 6 is a transmission component for connecting the intermediate handle 5 and the door handle 14, but because the first differential mechanism has the first stroke difference, the handle combination shaft 6 can drive the intermediate handle 5 to rotate alone. Furthermore, a reset spring 63 may be provided between the handle combination shaft 6 and the housing 1 of the lock, and the handle combination shaft 6 and the door handle 14 are automatically reversed and returned to their original positions after the unlocking action is completed by the reset spring 63. In this embodiment, the handle combination shaft 6 and the door handle 14 are kept at the starting position under the action of the reset spring 63. After the driving device 3 completes the locking action and drives the main driving disk 4 to rotate in the opposite direction independently, the door handle 14 is rotated to drive the handle combination shaft 6 to rotate in the opposite direction. The handle combination shaft 6 is combined with the intermediate dial handle 5 to form a transmission connection and drives the intermediate dial handle 5 to rotate in the opposite direction, thereby driving the main lock tongue 2 to be retracted to open the door, and the door handle 14 is released. Under the action of the reset spring 63, the handle combination shaft 6 and the door handle 14 are reversed and returned to the starting position. Due to the existence of the second stroke difference, the separation of the handle combination shaft 6 from the intermediate dial handle 5 during the reverse rotation only drives the door handle 14 to rotate back to the starting position, thereby keeping the lock in the locked state.

[0050] In addition to using the main lock tongue 2 to lock the door leaf, the lock can also be provided with a tilted tongue mechanism as a secondary locking mechanism. A further technical solution can also be, for example, Figure 2~Figure 8As shown, it also includes a flippable oblique tongue 71 and a plug-in 72 rotatably arranged on the side of the oblique tongue 71, the plug-in 72 is connected to the main drive disk 4 and the lock core handle 8, and the plug-in 72 is used to move under the drive of the main drive disk 4 or the lock core handle 8 to further release the restriction on the rotation of the oblique tongue 71. Among them, the oblique tongue 71 is a component that can perform telescopic and flipping activities. When the oblique tongue 71 is extended outward, it is used to temporarily lock the door (i.e., the windproof door). By pushing and pulling the door leaf, the oblique tongue 71 can be flipped and retracted to realize the door opening, and also includes an oblique tongue reset spring 73, through which the oblique tongue reset spring 73 allows the oblique tongue 71 to remain extended outward. Grooves are also provided on both sides of the oblique tongue 71, and the plug-in 72 is a component for limiting the rotation of the oblique tongue 71. When the plug-in 72 is inserted into the groove, the oblique tongue 71 is restricted from flipping and can only perform telescopic movement. At this time, its function is the same as that of an ordinary oblique lock tongue. The door leaf 16 cannot be opened by pushing or pulling. The door can only be opened by driving the plug-in 72 out of the groove of the oblique tongue 71 through the main drive disk 4, the lock core handle 8 or the door handle 14.

[0051] The following specifically describes how to drive the plug-in 72 through the main drive disk 4, the lock core handle 8 or the door handle 14:

[0052] The plug-in 72 is driven by the main drive disk 4, such as Figure 2 , Figure 4 and Figure 8 As shown, a driven disk 42 meshing with the main driving disk 4 is also provided between the main driving disk 4 and the plug-in 72, and a dial cylinder 43 is provided on the driven disk 42. When the main driving disk 4 rotates clockwise and drives the driven disk 42 to rotate counterclockwise for unlocking, the dial cylinder 43 on the driven disk 42 can simultaneously dial the plug-in 72 so that the plug-in 72 leaves the groove of the oblique tongue 71, so that the main lock tongue 2 is retracted and the restriction of the oblique tongue 71 is also released to achieve simultaneous unlocking.

[0053] The plug-in 72 is driven by the lock core handle 8. Figure 2 and Figure 8 As shown, an intermediate connecting rod 81 is also arranged between the lock core handle 8 and the plug-in 72. When the lock core handle 8 drives the main lock tongue 2 to be retracted, the lock core handle 8 can also simultaneously push the intermediate connecting rod 81 to push the plug-in 72 to leave the groove of the oblique tongue 71. In this way, while the main lock tongue 2 is retracted, the restriction of the oblique tongue 71 is also released to achieve simultaneous unlocking.

[0054] When the door is opened by the door handle 14, the rotation restriction of the latch bolt 71 needs to be released synchronously before the door can be opened. Figure 1 , Figure 2 , Figure 5 and Figure 8 As shown, it also includes a latch bolt fork 9, which is coaxially installed with the handle combination shaft 6, the main drive disk 4, and the intermediate handle 5. The latch bolt fork 9 is used to transmit the driving force of the handle combination shaft 6 to the plug-in 72 to further limit the rotation of the latch bolt 71; it also includes a plug-in reset spring 91, which is used to drive the plug-in 72 to reset to a position where it is plugged into the latch bolt 71. In this way, when the door handle 14 is turned to manually control the retraction of the main lock bolt 2, the handle combination shaft 6 can drive the latch bolt fork 9 to push the plug-in 72 to synchronously release the restriction on the rotation of the latch bolt 71. Furthermore, the intermediate connecting rod 81 can also be arranged between the latch bolt fork 9 and the lock core handle 8. The lock core handle 8 pushes the intermediate connecting rod 81 to push the latch bolt fork 9 to rotate and release the restriction on the latch bolt 71.

[0055] Generally, the rotation angle required to retract the main lock tongue 2 may be different from the rotation angle required to release the restriction of the plug-in 72 by the inclined tongue fork 9. In addition, the lock core handle 8 can also be further driven by the inclined tongue fork 9 to release the restriction on the rotation of the inclined tongue 71. Figure 2 , Figure 4~Figure 14 As shown, the transmission is realized between the oblique tongue shift fork 9 and the handle combination shaft 6 through the third differential mechanism, and the third differential mechanism includes a third arc groove 62 and a third protrusion 92 that can extend into the third arc groove 62, and the stroke defined by the third arc groove 62 is greater than the width of the third protrusion 92, and the third arc groove 62 and the third protrusion 92 are respectively arranged on the oblique tongue shift fork 9 and the handle combination shaft 6, so that through the cooperation between the third arc groove 62 and the third protrusion 92, not only the transmission is formed between the oblique tongue shift fork 9 and the handle combination shaft 6, but also a third stroke difference of relative rotation is formed, and the third stroke difference is used when the handle combination shaft 6 does not rotate, and the oblique tongue shift fork 9 is pushed and rotated by the lock core shift handle 8, the oblique tongue shift fork 9 can rotate independently relative to the handle combination shaft 6, thereby further pushing the plug-in 72. In this embodiment, the third arc groove 62 is arranged on the handle combination shaft 6 and the third protrusion 92 is arranged on the oblique tongue shift fork 9. Through the third stroke difference between the inclined tongue fork 9 and the handle combining shaft 6, the inclined tongue fork 9 can be pushed to rotate independently by the lock core handle 8 to release the restriction of the plug-in 72, and the relative position of the handle combining shaft 6 and the inclined tongue fork 9 can be adjusted so that the handle combining shaft 6 can drive the inclined tongue fork 9 after rotating a certain stroke to simultaneously retract the main lock tongue 2 and release the restriction of the plug-in 72.

[0056] like Figure 6As shown, the controller 15 is used to drive the driving device 3 to move, and when the main lock tongue 2 is extended, control the main drive disk 4 to reset to the default normal position by means of the first stroke difference; the default normal position refers to the position of the main drive disk 4 when the main lock tongue 2 is extended, which allows the intermediate handle 5 to independently move in the opposite direction for a stroke that allows the main lock tongue 2 to be retracted. The controller 15 can control the driving device 3 to move forward or reversely, thereby driving the main drive disk 4 to rotate forward or reversely. The controller 15 can control the driving device 3 to perform a specified movement, which is conducive to ensuring the reliability and stability of the transmission.

[0057] In order to allow the controller 15 to accurately control the rotation stroke and rotation position of the main drive disk 4, the controller 15 can also cooperate with a limit sensor connected to its signal to achieve automatic locking, unlocking and control the main drive disk 4 to rotate to a specified position. Fig.15 The control flow chart of the lock is shown. The lock also includes a door closing signal sensor A1. After the door is closed, the door closing signal sensor A1 responds to the signal of the door being fully closed and transmits the signal of the door being fully closed to the controller 15. The controller 15 is used to drive the driving device 3 to move the main lock tongue 2 to extend and lock according to the signal of the door being fully closed. Further, the lock also includes a locking signal sensor A2. The locking signal sensor A2 responds to the signal of the main lock tongue 2 extending and locking and transmits the signal of the main lock tongue 2 extending and locking to the controller 15. The controller 15 is used to control the main drive disk 4 to return to the default normal position by means of the first stroke difference according to the signal of the main lock tongue 2 extending and locking. Further, the lock also includes a normal signal sensor A3. The normal signal sensor A3 responds to the signal of the main drive disk 4 resetting to the default normal position and transmits the signal of the main drive disk 4 resetting to the default normal position to the controller 15. The controller 15 is used to control the main drive disk 4 to stop according to the signal of the main drive disk 4 resetting to the default normal position. Furthermore, the command receiver can transmit the user's door opening command signal to the controller 15, and the controller 15 is used to control the drive device 3 to move the main lock tongue 2 back to the position according to the user's door opening command signal. Furthermore, the lock also includes a door opening signal sensor A4, which responds to the signal of the door leaf 16 opening and transmits the signal of the door leaf 16 opening to the controller 15, and the controller 15 is used to drive the main drive disk 4 to return to the default normal position by means of the first stroke difference according to the signal of the door leaf 16 opening and wait for the next door closing action.

Claims

1. A manual-automatic lock, comprising: Main lock tongue, used to lock the door leaf; An intermediate handle, arranged on one side of the main lock tongue, for driving the main lock tongue to extend or retract in response to the driving force of the handle; A lock core lever, arranged on the other side of the main lock tongue, for driving the main lock tongue to extend or retract in response to the driving force of the lock core; A main drive plate is coaxially mounted with the intermediate handle and is used to drive the intermediate handle to rotate clockwise or counterclockwise to drive the main lock tongue to extend or retract; A driving device, meshingly connected with the main driving disk, and used to drive the main driving disk to rotate clockwise or counterclockwise according to instructions; The invention is characterized in that the transmission is realized between the intermediate dial handle and the main driving disk through a first differential mechanism, the first differential mechanism comprises a first arc groove and a first protrusion which can extend into the first arc groove, the effective stroke defined by the first arc groove is greater than the width of the first protrusion, the first arc groove and the first protrusion are respectively arranged on the intermediate dial handle and the main driving disk, so that through the cooperation between the first arc groove and the first protrusion, not only the transmission is formed between the intermediate dial handle and the main driving disk, but also a first stroke difference of relative rotation is formed, the first stroke difference is used for providing an avoidance space for the main driving disk to rotate in the opposite direction relative to the intermediate dial handle when the main driving disk drives the main lock tongue to extend with the intermediate dial handle, and when the main driving disk is driven by the driving device to automatically rotate in the opposite direction relative to the intermediate dial handle to form the avoidance space, the main lock tongue can be manually retracted; It also includes a handle combining shaft, which is coaxially installed with the main drive disk and the intermediate handle, and the handle combining shaft is used to transmit the driving force of the handle to the intermediate handle; the intermediate handle and the handle combining shaft realize transmission through a second differential mechanism, and the second differential mechanism includes a second arc groove and a second protrusion that can extend into the second arc groove, and the effective stroke defined by the second arc groove is greater than the width of the second protrusion. The second arc groove and the second protrusion are respectively arranged on the intermediate handle and the handle combining shaft, so that through the cooperation between the second arc groove and the second protrusion, not only transmission is formed between the intermediate handle and the handle combining shaft, but also a second stroke difference of relative rotation is formed, and the second stroke difference is used to allow the handle combining shaft to reset after the handle combining shaft rotates with the intermediate handle to open the door.

2. The manual-automatic lock according to claim 1, characterized in that: It also includes a flippable oblique tongue and a plug-in rotatably arranged on the side of the oblique tongue, the plug-in is transmission-connected to the main drive disk and the lock core handle, and the plug-in is used to move under the drive of the main drive disk or the lock core handle to further release the restriction on the rotation of the oblique tongue.

3. The manual-automatic lock according to claim 2, characterized in that: It also includes an inclined tongue fork, which is coaxially installed with the handle combination shaft, the main drive disk, and the intermediate shift handle, and is used to transmit the driving force of the handle combination shaft to the plug-in to further release the restriction on the rotation of the inclined tongue; it also includes a plug-in reset spring, which is used to drive the plug-in to reset to a position where it is plugged into the inclined tongue.

4. The manual-automatic lock according to claim 3, characterized in that: The transmission between the oblique tongue fork and the handle combining shaft is realized through a third differential mechanism, the third differential mechanism comprises a third arc groove and a third protrusion which can extend into the third arc groove, the effective stroke defined by the third arc groove is greater than the width of the third protrusion, the third arc groove and the third protrusion are respectively arranged on the oblique tongue fork and the handle combining shaft, so that through the cooperation between the third arc groove and the third protrusion, not only the transmission is formed between the oblique tongue fork and the handle combining shaft, but also a third stroke difference of relative rotation is formed, the third stroke difference is used for when the handle combining shaft does not rotate and the oblique tongue fork is pushed to rotate by the lock core shift handle, the oblique tongue fork can rotate independently relative to the handle combining shaft, thereby further pushing the plug-in.

5. The manual-automatic lock according to any one of claims 1 to 4, characterized in that: It also includes a controller, which is used to drive the driving device to operate, and when the main lock tongue is extended, control the main drive disk to reset to a default normal position with the help of the first stroke difference; the default normal position refers to the position of the main drive disk when the main lock tongue is extended, which allows the intermediate handle to independently move in the opposite direction for a stroke that allows the main lock tongue to be retracted.

6. The manual-automatic lock according to claim 5, characterized in that: It also includes a door closing signal sensor, which responds to a door closing signal and transmits the door closing signal to the controller. The controller is used to drive the driving device to move the main lock tongue to extend and lock according to the door closing signal.

7. The manual-automatic lock according to claim 5, characterized in that: It also includes a locking signal sensor, which responds to the signal of the main lock tongue extending and locking and transmits the signal of the main lock tongue extending and locking to the controller. The controller is used to control the main drive disk to reset to a default normal position with the help of the first stroke difference according to the signal of the main lock tongue extending and locking.

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