An automatically deadlocking lock body

Abstract

The application relates to an automatic anti-lock lock body, which comprises a lock shell, a square tongue assembly, an oblique tongue assembly, a safety tongue assembly, a handle driving assembly and a motor assembly. One end of the motor assembly is connected with the handle driving assembly to lock / unlock the handle driving assembly. The bottom of the handle driving assembly is connected with the square tongue assembly and the oblique tongue assembly through a linkage mechanism to drive the square tongue assembly and the oblique tongue assembly to move. The safety tongue assembly is further connected with a swing assembly which can swing between the square tongue assembly, the oblique tongue assembly and the safety tongue assembly. The swing assembly is connected with the safety tongue assembly and the oblique tongue assembly to lock / unlock the square tongue assembly. When the safety tongue assembly is pressed into the lock shell and the oblique tongue assembly is extended out of the lock shell, the swing assembly releases the locking of the square tongue assembly to make the square tongue assembly automatically pop out of the lock shell. The swing assembly is arranged to realize the delayed pop-out of the square tongue assembly when the door is closed, and the stability of the locking of the square tongue assembly is ensured.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, specifically to a lock body with automatic deadbolt. Background Technology

[0002] In the current field of door lock technology, the automatic deadbolt function of the lock body is a crucial element in ensuring home security. However, traditional automatic deadbolt lock bodies have significant technical shortcomings.

[0003] When a user closes the door, a certain gap inevitably exists between the door and the door frame. This is caused by various factors such as the door's installation precision and deformation during use. In such cases, once the safety bolt in a traditional lock body is pressed into the lock shell by the door panel, the square bolt will pop out directly. However, at this time, the beveled bolt may not have fully extended into the lock hole of the door frame, meaning the beveled bolt is not fully closed.

[0004] This can lead to a series of problems. For example, the latch may interfere with the door frame after it pops out, preventing the door from closing properly and forcing the user to readjust the door's position, which is very inconvenient. Even if the door can close, it may not close completely, reducing the lock's sealing and security, allowing dust and noise from the outside to easily enter the room, and also providing an opportunity for criminals.

[0005] Furthermore, this situation where the latch bolt pops out before the bolt is fully engaged increases wear on the internal components of the lock body. Because the bolt bolt is still unstable when the bolt pops out, the forces on the various components are uneven, which will shorten the lifespan of the lock body and increase the user's maintenance and replacement costs over time.

[0006] In addition, for some scenarios where high door-closing precision is required, such as offices and laboratories, this defect of traditional locks may affect the security and confidentiality of the premises, bringing unnecessary risks.

[0007] Therefore, overcoming the aforementioned shortcomings has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0008] This invention overcomes the shortcomings of the above-mentioned technologies and provides an automatic anti-locking lock body.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: An automatic deadbolt lock body includes a lock case, within which are installed a square latch assembly, a bevel latch assembly, a safety latch assembly, a handle drive assembly, and a motor assembly. One end of the motor assembly is linked to the handle drive assembly to lock / unlock the handle drive assembly. The bottom of the handle drive assembly is linked to the square latch assembly and the bevel latch assembly via a linkage mechanism to drive the square latch assembly and the bevel latch assembly to move. A swinging component is rotatably connected to the safety latch assembly and can swing between the square latch assembly, the bevel latch assembly, and the safety latch assembly. The swinging component is linked to the safety latch assembly and the bevel latch assembly respectively to lock / unlock the square latch assembly. When the safety latch assembly is pressed into the lock case and the bevel latch assembly extends out of the lock case, the swinging component releases the lock on the square latch assembly, causing the square latch assembly to automatically eject from the lock case.

[0010] Furthermore, the swing assembly includes a first swing plate and a second swing plate coaxially rotatably mounted on the safety latch assembly via a first pin. The swing assembly also includes a torsion spring assembly for resetting the first and second swing plates after swinging. The first swing plate is mounted on the second swing plate. In the locked state of the square latch assembly, the left end of the first swing plate abuts against the oblique latch assembly and the right end is limited to abut against the square latch assembly to restrict the square latch assembly from extending out of the lock housing. The left end of the second swing plate abuts against the oblique latch assembly and the right end is limited to abut against the square latch assembly to restrict the square latch assembly from extending out of the lock housing.

[0011] Furthermore, the first oscillating plate includes a first limiting groove, the second oscillating plate includes a second limiting groove, and the torsion spring assembly includes a first torsion spring and a second torsion spring coaxially mounted. The first torsion spring is disposed on the upper end of the second torsion spring. One leg of the first torsion spring abuts against the oblique tongue assembly, and the other leg abuts against the first limiting groove of the first oscillating plate. One leg of the second torsion spring abuts against the oblique tongue assembly, and the other leg abuts against the second limiting groove of the second oscillating plate.

[0012] Furthermore, the safety latch assembly includes a safety latch that can extend / retract relative to the lock housing, a safety latch lever connected to the safety latch at one end, and a first spring abutting between the safety latch lever and the first pin. The right end of the safety latch lever has a first clearance hole for avoiding the first pin when the safety latch lever is retracted into the lock housing. The first spring is installed in the first clearance hole. The safety latch lever also has a third limiting groove for allowing the left end of the second swing piece to be inserted and limited when the safety latch lever is retracted into the lock housing. The safety latch lever also includes a first protrusion. The lock housing has a first spare through hole for the first protrusion to pass through and be movable therein.

[0013] Furthermore, the latch assembly includes a latch that can extend / retract relative to the lock housing, a latch rod connected to the latch at one end, a fixed seat disposed at the other end of the latch rod, and a second spring sleeved on the latch rod. The latch rod is movably inserted through the fixed seat and its rear end extends out of the fixed seat and is linked to the linkage mechanism. The latch includes a second protrusion disposed at its lower end, and the left end of the first swing plate abuts against the lower end of the latch.

[0014] Furthermore, the latch assembly includes a latch that can extend / retract relative to the lock housing, a latch lever connected to the latch at one end, a first lever connected to the other end of the latch lever via a rotating shaft for driving the latch to retract into the lock housing, and a third torsion spring connected to the other end of the first lever for driving the first lever to reset, thereby causing the latch to extend out of the lock housing. The bottom of the first lever is linked to a linkage mechanism, and the rotating shaft can rotate synchronously with the first lever.

[0015] Furthermore, the square latch rod includes a second clearance hole on its left side for avoiding the pivot when the square latch rod retracts into the lock case. The first lever includes a lever block symmetrically arranged on its left end. The square latch rod also has a guide hole, in which the lever block is movably disposed. The square latch rod also includes an abutment portion on its upper end. The first swing plate and the second swing plate abut against the abutment portion to restrict the square latch rod from extending out of the lock case. The third torsion spring is sleeved on the pivot to drive the first lever to reset. A second pin is also provided on the right side of the pivot and mounted on the lock case. One leg of the third torsion spring abuts against the first lever and the other leg hooks onto the second pin. The lock case has a first mounting hole for mounting the pivot and exposing it outside the lock case. The pivot has a first handle through hole.

[0016] Furthermore, the linkage mechanism includes a first linkage member rotatably connected to the right end of the handle drive assembly, a fourth torsion spring disposed on the lock housing for driving the linkage mechanism to reset and driving the handle assembly to reset, a first linkage plate linked to the lower end of the first linkage member, and a second linkage plate linked to the first linkage plate. The first linkage member abuts against the handle drive assembly to swing under the drive of the handle drive assembly. The lower end of the first linkage member abuts against the rear end of the latch assembly to drive the latch assembly to retract into the lock housing, and the first linkage plate abuts against the rear end of the latch assembly to swing synchronously when the latch assembly retracts into the lock housing. One end of the second linkage plate is connected to the first linkage plate through a third pin to swing with the first linkage plate. The other end of the second linkage plate abuts against the square latch assembly to drive the square latch assembly to retract into the lock housing. The first linkage plate includes a protrusion disposed at its lower end.

[0017] Furthermore, the linkage mechanism also includes a third linkage plate linked to the first linkage plate. The third linkage plate is rotatably connected to the safety latch assembly. One end of the third linkage plate is hooked to the second linkage plate, and the other end presses against the latch assembly to restrict the latch assembly from retracting into the lock housing. The third linkage plate includes a second protrusion. The lock housing has a second spare through hole through which the second protrusion passes and can move. A fifth torsion spring for resetting the third linkage plate is also installed between the safety latch assembly and the third linkage plate. One leg of the fifth torsion spring abuts against the latch assembly, and the other leg abuts against the third linkage plate.

[0018] Furthermore, the handle drive assembly includes a handle connector and a handle lever symmetrically connected coaxially to the handle connector. The right end of the handle lever abuts against the upper end of the linkage mechanism to drive the linkage mechanism to move. A second handle through hole is installed on the handle connector. The motor assembly includes a motor and a locking piece that can extend and retract toward the handle lever under the drive of the motor. A slot for the locking piece to be inserted is provided on the left end of the handle lever. A third spare through hole is also provided on the lock housing for the locking piece to pass through and move therein.

[0019] Compared with the prior art, the beneficial effects of this utility model are: This design incorporates a swing mechanism that ensures the latch assembly ejects from the lock only after the bolt assembly has been pressed into the door frame and the latch bolt has extended and entered the lock hole. In other words, it achieves a delayed ejection of the latch bolt when the door is closed, ensuring the latch bolt is fully closed before automatically ejecting. This effectively prevents the latch bolt from not closing properly due to door gaps, significantly improving the stability and security of the lock. Attached Figure Description

[0020] Figure 1 This is one of the structural diagrams of the front of the lock body after it is hidden behind the lock shell cover in this case.

[0021] Figure 2 This is the second structural diagram of the front of the lock body after it is hidden behind the lock shell front cover in this case.

[0022] Figure 3 This is a structural diagram of the oblique tongue assembly, the swing assembly, and the third linkage plate in the assembled state of this case.

[0023] Figure 4 This is a structural diagram of the back of the lock body after it is hidden behind the lock case cover.

[0024] Figure 5 This is a structural diagram of the back of the lock body in this case. Detailed Implementation

[0025] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art: For ease of description and understanding, please refer to the directions shown in the attached diagram for descriptions related to positional relationships such as front, back, top, bottom, left, right, outside, and inside in this case.

[0026] like Figures 1 to 5 As shown, this invention provides an automatically locking lock body, including a lock housing 100. A square latch assembly 1, a bevel latch assembly 2, a safety latch assembly 3, a handle drive assembly 4, and a motor assembly 5 are installed within the lock housing 100. The lock housing 100 provides installation space and support structure for all internal components, ensuring stability during installation and movement, and effectively protecting internal parts. The bevel latch assembly 2 is used for locking the lock body, and the square latch assembly 1 is used for further locking the lock body. One end of the motor assembly 5 is linked to the handle drive assembly 4 to lock / unlock the handle drive assembly 4, thereby enabling electronic unlocking by the user. In specific implementations, electronic unlocking methods include, but are not limited to, card swiping, password, and fingerprint unlocking methods. The bottom of the handle drive assembly 4 is linked to the square latch assembly 1 and the bevel latch assembly 2 via a linkage mechanism 6, thereby driving the square latch assembly 1 and the bevel latch assembly 2 to move. After the user-driven motor assembly 5 unlocks the handle 4, the user can continue to rotate the handle drive assembly 4 to retract the square latch assembly 1 and the bevel latch assembly 2 into the lock housing 100, thereby unlocking the lock body. A swing assembly 7, which can swing between the square latch assembly 1, the bevel latch assembly 2, and the lock latch assembly 3, is also rotatably connected to the safety latch assembly 3. The swing assembly 7 is linked with the safety latch assembly 3 and the bevel latch assembly 2 to lock / unlock the square latch assembly 1. The safety latch assembly 3 is used to work in conjunction with the swing assembly 7, so that the triggering of the safety latch assembly 3, in conjunction with the swing assembly 7, controls the square latch assembly 1 to pop out of the lock housing 100.

[0027] Specifically, when the latch assembly 3 is pressed into the lock housing 100 and the bolt assembly 2 extends out of the lock housing 100 at the same time, the swing assembly 7 releases the bolt assembly 1 from the lock housing 100, causing the bolt assembly 1 to automatically pop out of the lock housing 100. When the door is closed, the latch assembly 3 is pressed into the lock housing 100 by the door frame. At this time, the swing assembly 7 releases the linkage between the latch assembly 3 and the bolt assembly 1. Since the swing assembly 7 also simultaneously links the bolt assembly 2 and the bolt assembly 1, the bolt assembly 1 will not pop out immediately until the bolt assembly 2 is completely pressed into the corresponding keyhole by the door frame. At this time, the swing assembly 7 releases the linkage between the bolt assembly 2 and the bolt assembly 1, so that the bolt assembly 1 can automatically pop out relative to the lock housing 100, ensuring the stability of the lock body locking.

[0028] In practice, the safety latch assembly 3 is positioned between the bevel latch assembly 2 and the square latch assembly 1, while the motor assembly 5 and the handle drive assembly 4 are arranged side-by-side above the bevel latch assembly 2. This structural arrangement makes the internal structure of the lock body more compact, which is beneficial for reducing the overall size of the lock body, saving costs, and facilitating transportation.

[0029] Continue to refer to Figures 1-5 As shown, the swing assembly 7 of this invention includes a first swing piece 72 and a second swing piece 73 coaxially rotatably mounted on the locking tongue assembly 3 via a first pin 71. The swing assembly 7 also includes a torsion spring assembly 74 for resetting the first and second swing pieces 72 after swinging. The first swing piece 72 is mounted on the second swing piece 73. The first pin 71 provides a fulcrum for the installation and rotation of the first and second swing pieces 72, ensuring their flexible swinging. The coaxial rotational mounting design of the first and second swing pieces 72 simplifies the structure of the swing assembly 7 and ensures the coaxiality and stability of the rotation of the two swing pieces 72. The torsion spring assembly 74 is used to restore the first and second swing pieces 72 to their initial positions after the swinging unlocking action is completed, ensuring automatic re-locking of the locking tongue assembly 1 after the unlocking action is completed. This ensures stable operation of the swing assembly 7, and its simple structure and convenient implementation make it easy to implement.

[0030] Specifically, in the locked state of the latch assembly 1, the left end of the first swing plate 72 abuts against the bevel latch assembly 2, and the right end is limited to abut against the latch assembly 1 to restrict the latch assembly 1 from extending out of the lock housing 100. The left end of the second swing plate 73 abuts against the bevel latch assembly 2, and the right end is limited to abut against the latch assembly 1 to restrict the latch assembly 1 from extending out of the lock housing 100. When closing the door, the safety latch assembly 3 is first pressed into the lock housing. At this time, the second swing plate 73 releases the lock on the latch assembly 1 and releases the linkage restriction between the two. As the user continues to close the door, until the bevel latch assembly 2 is completely pressed into the corresponding keyhole by the door frame, the first swing plate 72 releases the lock on the latch assembly 1 and the linkage restriction. At this time, the latch assembly 1 automatically pops out of the lock housing 100, completing the locking action. The swing assembly 7 of this structure is simple in structure, easy to implement, and low in cost. It not only ensures the stability and security of the lock body locking but also improves the service life of the lock body.

[0031] Furthermore, continue to refer to Figures 1-5As shown, the first swing plate 72 includes a first limiting groove 721, the second swing plate 73 includes a second limiting groove 731, and the torsion spring assembly 74 includes a first torsion spring 741 and a second torsion spring 742 coaxially mounted. The first torsion spring 741 is disposed on the upper end of the second torsion spring 742. One leg of the first torsion spring 741 abuts against the oblique tongue assembly 2, and the other leg abuts against the first limiting groove 721 of the first swing plate 72. One leg of the second torsion spring 742 abuts against the oblique tongue assembly 2, and the other leg abuts against the second limiting groove 731 of the second swing plate 73.

[0032] As described above, this structural design of the torsion spring assembly 74 enables the first swing plate 72 and the second swing plate 73 to quickly and stably reset after being subjected to external force. The first limiting groove 721 and the second limiting groove 731 not only provide stable support points for the first torsion spring 741 and the second torsion spring 742 respectively, but also effectively confine the corresponding torsion spring legs within the first limiting groove 721 and the second limiting groove 731, ensuring that the first torsion spring 741 and the second torsion spring 742 will not malfunction due to slippage of the legs. Simultaneously, it effectively limits the swing range of the first swing plate 72 and the second swing plate 73, ensuring the accuracy of the locking and unlocking actions. Furthermore, the coaxial mounting design of the first torsion spring 741 and the second torsion spring 742 further improves the overall synchronization and stability of the swing assembly 7.

[0033] like Figures 1-5As shown, specifically, the latch assembly 3 includes a latch 31 that can extend / retract relative to the lock housing 100, a latch lever 32 connected at one end to the latch 31, and a first spring 33 abutting between the latch lever 32 and the first pin 71. The latch lever 32 is used to cooperate with other components inside the lock housing 100, thereby driving the latch 31 to extend and retract relative to the lock housing 100. The first spring 33 is compressed when the latch lever 32 retracts into the lock housing 100. When the external force disappears, it drives the latch lever 32 and the latch 31 to return to their original positions and extend, ensuring that the latch 31 can automatically return to its original position and prepare for the next door closing action. The right end of the latch lever 32 has a first clearance hole 321 for avoiding the first pin 71 when the latch lever 32 retracts into the lock housing 100. The first spring 33 is installed in the first clearance hole 321 to ensure that the latch lever 32 can smoothly retract into the lock housing 100 without structural interference. The safety latch rod 32 is also provided with a third limiting groove 322 for the left end of the second swing piece 73 to be inserted and limited when the safety latch rod 32 is retracted into the lock housing 100. This allows the second swing piece 32 to be precisely engaged in the third limiting groove 322 after the safety latch rod 32 is retracted into the lock housing 100, thus limiting the swing of the second swing piece 73 and preventing it from automatically resetting under the elastic force of the second torsion spring 742, which would cause the unlocking of the safety latch assembly 1 to fail, effectively ensuring the stability of unlocking. The safety latch rod 32 also includes a first protrusion 323, and the lock housing 100 has a first spare through hole 101 for the first protrusion 323 to pass through and move therein. The cooperation of the first protrusion 323 and the first spare through hole 101 provides a stable guiding path for the extension and retraction of the safety latch assembly 3 relative to the lock housing 100, ensuring the stability of the safety latch rod 32's movement. At the same time, it can serve as a backup operating channel in special circumstances, increasing the emergency handling capability of the lock body.

[0034] Continue to refer to Figures 1-5As shown, the latch assembly 2 of this invention includes a latch 21 that can extend / retract relative to the lock housing 100, a latch lever 22 connected to the latch 21 at one end, a fixing seat 23 disposed at the other end of the latch lever 22, and a second spring 24 sleeved on the latch lever 22. The latch lever 22 is used to cooperate with other components inside the lock housing 100, thereby driving the latch 21 to extend and retract relative to the lock housing 100. The second spring 24 is compressed when the latch lever 22 retracts into the lock housing 100, and drives the latch lever 22 and the latch 21 to return to their original extension after the external force disappears, ensuring that the latch 21 can automatically return to its original position. The latch lever 22 is movably mounted on the fixing seat 23 and its rear end extends out of the fixing seat 23 and is linked to the linkage mechanism 6, so that the latch lever 22 can retract into the lock housing 100 under the drive of the handle drive assembly 4. The latch 21 includes a second protrusion 211 at its lower end, and the left end of the first swing plate 72 abuts against the lower end of the latch 21. When the latch 21 is fully inserted into the lock hole in the door frame, the second protrusion 211 abuts against the first swing plate 72, and the second protrusion 211 presses down on the first swing plate 72, thereby causing the first swing plate 72 to swing and release the first swing plate 72 from locking the latch assembly 1.

[0035] Continue to refer to Figures 1-5 As shown, the latch assembly 1 of this invention includes a latch 11 that can extend / retract relative to the lock housing 100, a latch lever 12 connected to the latch 11 at one end, a first lever 14 rotatably connected to the other end of the lever 12 via a pivot 13 for driving the latch 11 to retract into the lock housing 100, and a third torsion spring 15 connected to the other end of the first lever 14 for driving the first lever 14 to reset, thereby causing the latch 11 to extend out of the lock housing 100. The latch lever 12 is used to cooperate with other components inside the lock housing 100 to drive the latch 11 to extend and retract relative to the lock housing 100. The third torsion spring 15 is used to automatically eject the latch assembly 1 after the swing assembly 7 unlocks the latch assembly 1. The bottom of the first lever 14 is linked to the linkage mechanism 6, and the pivot 13 can rotate synchronously with the first lever 14, thereby moving the latch lever 12 through the first lever 14 to realize the extension and retraction of the latch 11 relative to the lock housing 100. During unlocking, the linkage mechanism 6 drives the first lever 14 to rotate around the pivot 13, compressing the third torsion spring 15 and causing the latch rod 12 and the latch 11 to retract into the lock housing 100. When the door is closed and the swing assembly 7 is unlocked, the third torsion spring 15 returns to its original position, driving the first lever 14 to rotate in the opposite direction, causing the latch rod 12 and the latch 11 to pop out of the lock housing 100 to complete the locking.

[0036] Furthermore, the square latch rod 12 includes a second clearance hole 121 on its left side for avoiding the pivot 13 when the square latch rod 12 retracts into the lock housing 100. This allows the square latch rod 12 to smoothly avoid the pivot 13 during retraction, preventing structural interference. Conversely, the pivot 13 acts as a longitudinal limit, ensuring the stability of the square latch rod 12's movement. The first lever 14 includes a lever block 141 symmetrically arranged at its left end. The square latch rod 12 also has a guide hole 122, in which the lever block 141 is movably disposed. Through the structural cooperation of the lever block 141 and the guide hole 122, the first lever 14 provides a fulcrum and guide for driving the square latch rod 12, ensuring accurate movement path and direction, thus guaranteeing the stability of force transmission between the first lever 14 and the square latch rod 12, effectively ensuring the stability of the square latch rod 12's movement. The latch lever 12 also includes an abutment portion 123 at its upper end. The first swing plate 72 and the second swing plate 73 abut against the abutment portion 123 to restrict the latch lever 12 from extending out of the lock housing 100. The abutment portion 123 provides a precise abutment position for the first swing plate 72 and the second swing plate 73 to lock the latch lever 12, thereby restricting the latch lever 12 from extending out of the lock housing. A third torsion spring 15 is sleeved on the pivot 13 to drive the first lever 14 to reset. A second pin 102 mounted on the lock housing 100 is also provided on the right side of the pivot 13. One leg of the third torsion spring 15 abuts against the first lever 14, and the other leg hooks onto the second pin 102, ensuring the stability and accuracy of the first lever 14's reset, so as to facilitate the next unlocking. A first mounting hole 103 is provided on the lock housing 100 for mounting the rotating shaft 13 and exposing it outside the lock housing 100. The rotating shaft 13 is provided with a first handle through hole 131. By providing the first handle through hole 131, it is possible to effectively prevent the user from using a tool to insert into the first handle through hole 131 to drive the square tongue pull rod 12 to move and cause the square tongue 11 to retract into the lock housing 100 in case of unexpected situations such as jamming of the motor assembly 5, jamming of the square tongue assembly 1, or jamming of the linkage mechanism 6, thereby achieving the effect of backup door opening. In specific implementation, the first handle through hole 131 can be triangular, square, hexagonal, etc., and in this case, it is preferably set to square.

[0037] Specifically, continue to refer to Figures 1-5As shown, the linkage mechanism 6 in this case includes a first linkage member 61 rotatably connected to the right end of the handle drive assembly 4, a fourth torsion spring 67 disposed on the lock housing 100 for driving the linkage mechanism 6 to reset and driving the handle drive assembly 4 to reset, a first linkage plate 62 linked to the lower end of the first linkage member 61, and a second linkage plate 63 linked to the first linkage plate 62. Through the cooperation of the above components, the torque of the handle drive assembly 4 is transmitted to the linkage mechanism 6 and then to the latch bolt assembly 2 and the square bolt assembly 1, ensuring the stability and coordination of the linkage of each mechanism. The fourth torsion spring 67 effectively ensures the automatic reset of the linkage mechanism 6 and the handle drive assembly 4, so that the entire lock body returns to its initial state after the user releases the handle. More specifically, the first linkage member 61 abuts against the handle drive assembly 4 to swing under the drive of the handle drive assembly 4. The lower end of the first linkage member 61 abuts against the rear end of the latch assembly 2 to drive the latch assembly 2 to retract into the lock housing 100, and the first linkage piece 62 abuts against the rear end of the latch assembly 2 to swing synchronously when the latch assembly 2 retracts into the lock housing 100. One end of the second linkage piece 63 is connected to the first linkage piece 62 through the third pin 64 to swing with the first linkage piece 62, and the other end of the second linkage piece 63 abuts against the square latch assembly 1 to drive the square latch assembly 1 to retract into the lock housing 100. The first linkage piece 62 includes a protrusion 621 disposed at its lower end. Preferably, the lock body of this invention also includes a mechanical lock cylinder (not shown in the figure) to provide the function of mechanically opening the door with the key, which can use a mechanical lock cylinder structure commonly used in the art. In specific implementation, the protrusion 621 is used to provide a toggle position for the mechanical lock cylinder to realize mechanical unlocking.

[0038] Furthermore, continue to refer to Figures 1-5As shown, the linkage mechanism 6 in this case also includes a third linkage piece 65 linked to the first linkage piece 62, and the third linkage piece 65 is rotatably connected to the latch assembly 3. One end of the third linkage piece 65 is hooked to the second linkage piece 63, and the other end presses against the latch assembly 2 to restrict the latch assembly 2 from retracting into the lock housing 100. Under normal conditions, the other end of the third linkage piece 65 presses against the rear end of the latch assembly 2 to prevent criminals from opening the door by inserting a card into the door gap in case of unexpected situations such as the failure of the latch assembly 1. The third linkage piece 65 includes a third protrusion 651, and the lock housing 100 has a second spare through hole 104 for the third protrusion 651 to pass through and move therein. By setting the second spare through hole 104, in case of unexpected situations such as the failure of the linkage mechanism 6, the user can directly release the lock of the latch assembly 2 by the third linkage piece 65 from the outside of the lock housing 100, providing an emergency unlocking method and further improving the reliability and security of the lock body. A fifth torsion spring 66 is also installed between the safety tongue assembly 3 and the third linkage plate 65 to reset the third linkage plate 65. One leg of the fifth torsion spring 66 abuts against the oblique tongue assembly 2, and the other leg abuts against the third linkage plate 65. The fifth torsion spring 66 provides a reset force to the third linkage plate 65, so that it presses against and locks the oblique tongue assembly 2 in its normal state.

[0039] like Figures 1-5As shown, the handle drive assembly 4 of this invention includes a handle connector 41 and handle levers 42 coaxially and symmetrically connected to the handle connector 41. The right end of the handle lever 42 abuts against the upper end of the linkage mechanism 6 to drive the linkage mechanism 6 to move. A second handle through hole 411 is installed on the handle connector 41. In specific implementation, the second handle through hole 411 is used to install the door handle. There are two handle levers 42 arranged symmetrically and coaxially, which are used to connect and install the inner door handle and the outer door handle, respectively. The second handle through hole 411 can be triangular, square, hexagonal, etc., and is preferably set to square in this invention. The handle levers 42 and the handle connector 41 rotate synchronously and coaxially, thereby driving the linkage mechanism 6 to move through the swing of the handle levers 42, realizing the transmission of force. The motor assembly 5 in this case includes a motor 51 and a locking piece 52 that can retract and move toward the handle lever 42 under the drive of the motor 51. The left end of the handle lever 42 has a slot 421 for the locking piece 52 to engage. Driven by the motor 51, the locking piece 52 can retract and move. When the locking piece 52 engages in the slot 421 of the handle lever 42, the handle lever 42 is locked, and the handle cannot rotate, meaning the linkage mechanism 6 cannot be driven, and the lock body is in a locked state. When unlocking is required, the motor 51 drives the locking piece 52 to retract, and the handle lever 42 returns to its free state. At this time, the handle can be manually operated to drive the handle lever 42 to drive the linkage mechanism 6, thus unlocking the lock and ensuring the reliability and stability of locking and unlocking. A third spare through hole 105 is also provided on the lock housing 100 for the locking piece 52 to pass through and move within. When the lock is in the locked state, if the motor 51 or the electric system malfunctions, the user can directly operate the locking plate 52 through the third spare through hole 105 outside the lock housing 100 to release the locking plate 52 from the handle lever 42, thereby achieving emergency unlocking and ensuring the reliability and security of the lock body.

[0040] As stated above, this case protects an automatic deadbolt lock body, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. An automatic deadbolt lock body, comprising a lock housing (100), wherein a square latch assembly (1), a bevel latch assembly (2), a safety latch assembly (3), a handle drive assembly (4), and a motor assembly (5) are installed within the lock housing (100), characterized in that: One end of the motor assembly (5) is linked to the handle drive assembly (4) to lock / unlock the handle drive assembly (4). The bottom of the handle drive assembly (4) is linked to the square latch assembly (1) and the oblique latch assembly (2) through the linkage mechanism (6) to drive the square latch assembly (1) and the oblique latch assembly (2) to move. The safety latch assembly (3) is also rotatably connected to a swing assembly (7) that can swing between the square latch assembly (1), the oblique latch assembly (2) and the safety latch assembly (3). The swing assembly (7) is linked to the safety latch assembly (3) and the oblique latch assembly (2) to lock / unlock the square latch assembly (1). When the safety latch assembly (3) is pressed into the lock housing (100) and the oblique latch assembly (2) extends out of the lock housing (100), the swing assembly (7) releases the lock on the square latch assembly (1) so that the square latch assembly (1) automatically pops out of the lock housing (100).

2. The lock body for automatic anti-locking according to claim 1, characterized in that: The swing assembly (7) includes a first swing piece (72) and a second swing piece (73) coaxially mounted on the safety tongue assembly (3) via a first pin (71). The swing assembly (7) also includes a torsion spring assembly (74) for resetting the first swing piece (72) and the second swing piece (73) after swinging. The first swing piece (72) is mounted on the second swing piece (73). In the locked state of the square tongue assembly (1), the left end of the first swing piece (72) abuts against the oblique tongue assembly (2) and the right end is limited to abut against the square tongue assembly (1) to restrict the square tongue assembly (1) from extending out of the lock shell (100). The left end of the second swing piece (73) abuts against the oblique tongue assembly (2) and the right end is limited to abut against the square tongue assembly (1) to restrict the square tongue assembly (1) from extending out of the lock shell (100).

3. The lock body for automatic anti-locking according to claim 2, characterized in that: The first swing plate (72) includes a first limiting groove (721), the second swing plate (73) includes a second limiting groove (731), and the torsion spring assembly (74) includes a first torsion spring (741) and a second torsion spring (742) mounted coaxially. The first torsion spring (741) is disposed on the upper end of the second torsion spring (742). One of the legs of the first torsion spring (741) abuts against the oblique tongue assembly (2), and the other leg abuts against the first limiting groove (721) of the first swing plate (72). One of the legs of the second torsion spring (742) abuts against the oblique tongue assembly (2), and the other leg abuts against the second limiting groove (731) of the second swing plate (73).

4. The lock body for automatic anti-locking according to claim 2, characterized in that: The safety latch assembly (3) includes a safety latch (31) that can extend / retract relative to the lock housing (100), a safety latch lever (32) connected at one end to the safety latch (31), and a first spring (33) abutting between the safety latch lever (32) and the first pin (71). The right end of the safety latch lever (32) is provided with a first clearance hole (321) for avoiding the first pin (71) when the safety latch lever (32) is retracted into the lock housing (100). The spring (33) is installed in the first clearance hole (321). The safety tongue rod (32) is also provided with a third limiting groove (322) for the left end of the second swing piece (73) to be inserted and limited when the safety tongue rod (32) is retracted into the lock shell (100). The safety tongue rod (32) also includes a first protrusion (323). The lock shell (100) is provided with a first spare through hole (101) for the first protrusion (323) to pass through and to move therein.

5. The lock body for automatic anti-locking according to claim 2, characterized in that: The latch assembly (2) includes a latch (21) that can extend / retract relative to the lock housing (100), a latch rod (22) connected to the latch (21) at one end, a fixed seat (23) at the other end of the latch rod (22), and a second spring (24) sleeved on the latch rod (22). The latch rod (22) is movably inserted through the fixed seat (23) and its rear end extends out of the fixed seat (23) and is linked to the linkage mechanism (6). The latch (21) includes a second protrusion (211) at its lower end, and the left end of the first swing plate (72) abuts against the lower end of the latch (21).

6. The lock body for automatic anti-locking according to claim 2, characterized in that: The latch assembly (1) includes a latch (11) that can extend / retract relative to the lock housing (100), a latch lever (12) connected to the latch (11) at one end, a first lever (14) rotatably connected to the other end of the latch lever (12) via a rotating shaft (13) for driving the latch (11) to retract into the lock housing (100), and a third torsion spring (15) connected to the other end of the first lever (14) for driving the first lever (14) to reset, thereby driving the latch (11) to extend out of the lock housing (100). The bottom of the first lever (14) is linked to the linkage mechanism (6), and the rotating shaft (13) can rotate synchronously with the first lever (14).

7. The lock body for automatic anti-locking according to claim 6, characterized in that: The square latch lever (12) includes a second clearance hole (121) on its left side for avoiding the pivot (13) when the square latch lever (12) is retracted into the lock housing (100). The first lever (14) includes a lever block (141) symmetrically arranged at its left end. The square latch lever (12) also has a guide hole (122), and the lever block (141) is movably disposed in the guide hole (122). The square latch lever (12) also includes an abutment portion (123) at its upper end. The first swing plate (72) and the second swing plate (73) abut against the abutment portion (123) to restrict the square latch. The pull rod (12) extends out of the lock housing (100). The third torsion spring (15) is sleeved on the rotating shaft (13) to drive the first lever (14) to reset. The right side of the rotating shaft (13) is also provided with a second pin (102) installed on the lock housing (100). One leg of the third torsion spring (15) abuts against the first lever (14) and the other leg hooks onto the second pin (102). The lock housing (100) is provided with a first mounting hole (103) for installing the rotating shaft (13) and exposing it to the lock housing (100). The rotating shaft (13) is provided with a first handle through hole (131).

8. The lock body for automatic anti-locking according to claim 2, characterized in that: The linkage mechanism (6) includes a first linkage member (61) rotatably connected to the right end of the handle drive assembly (4), a fourth torsion spring (67) disposed on the lock housing (100) for driving the linkage mechanism (6) to reset and driving the handle drive assembly (4) to reset, a first linkage plate (62) linkagely connected to the lower end of the first linkage member (61), and a second linkage plate (63) linkagely connected to the first linkage plate (62). The first linkage member (61) abuts against the handle drive assembly (4) to swing under the drive of the handle drive assembly (4). The lower end of the first linkage member (61) abuts against the inclined... The rear end of the tongue assembly (2) drives the oblique tongue assembly (2) to retract into the lock housing (100), and the first linkage piece (62) abuts against the rear end of the oblique tongue assembly (2) to swing synchronously when the oblique tongue assembly (2) retracts into the lock housing (100). One end of the second linkage piece (63) is connected to the first linkage piece (62) through the third pin (64) so ​​as to swing with the first linkage piece (62). The other end of the second linkage piece (63) abuts against the square tongue assembly (1) to drive the square tongue assembly (1) to retract into the lock housing (100). The first linkage piece (62) includes a protrusion (621) disposed at its lower end.

9. The lock body for automatic anti-locking according to claim 8, characterized in that: The linkage mechanism (6) further includes a third linkage plate (65) that is linked to the first linkage plate (62). The third linkage plate (65) is rotatably connected to the safety tongue assembly (3). One end of the third linkage plate (65) is hooked to the second linkage plate (63), and the other end is pressed against the oblique tongue assembly (2) to restrict the oblique tongue assembly (2) from retracting into the lock housing (100). The third linkage plate (65) includes a third protrusion (651). The lock housing (100) has a second spare through hole (104) for the third protrusion (651) to pass through and move therein. A fifth torsion spring (66) for resetting the third linkage plate (65) is also installed between the safety tongue assembly (3) and the third linkage plate (65). One leg of the fifth torsion spring (66) abuts against the oblique tongue assembly (2), and the other leg abuts against the third linkage plate (65).

10. The lock body for automatic anti-locking according to claim 2, characterized in that: The handle drive assembly (4) includes a handle connector (41) and a handle lever (42) coaxially and symmetrically connected to the handle connector (41). The right end of the handle lever (42) abuts against the upper end of the linkage mechanism (6) to drive the linkage mechanism (6) to move. A second handle through hole (411) is installed on the handle connector (41). The motor assembly (5) includes a motor (51) and a locking piece (52) that can extend and retract toward the handle lever (42) under the drive of the motor (51). A slot (421) for the locking piece (52) to be inserted is provided on the left end of the handle lever (42). A third spare through hole (105) is also provided on the lock housing (100) for the locking piece (52) to pass through and move therein.

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