A type of one-piece hook lock

Abstract

This invention provides a one-piece hook lock, including a mounting rod on which a main lock body is mounted, and auxiliary lock bodies symmetrically arranged above and below the main lock body. The main lock body includes a latch and a square bolt located below the latch. The main lock body is linked to the auxiliary lock bodies via a linkage rod movably mounted on the mounting rod. The linkage rod has two parts, one above the other, which are respectively connected to the upper and lower auxiliary lock bodies. The auxiliary lock bodies include a lock hook. The main lock body also includes a handle drive assembly, a lock cylinder drive assembly, and a linkage plate. The handle drive assembly is linked to the latch, the square bolt, and the upper and lower linkage rods via the linkage plate. Moving the handle drive assembly can drive the latch and the square bolt to extend / retract relative to the main lock body, and simultaneously drive the lock hook to extend / retract relative to the auxiliary lock bodies. A detection mechanism is mounted on the linkage plate. The detection mechanism is used to detect whether the latch and the square bolt are fully extended / retracted relative to the main lock body, and simultaneously to detect whether the lock hook is fully extended / retracted relative to the auxiliary lock bodies.

Description

Technical Field

[0001] This utility model relates to the field of door locks, specifically to an integrated hook lock. Background Technology

[0002] A typical integrated door lock consists of a main lock body installed in the middle of the door panel and auxiliary lock bodies located at the top and bottom of the door panel, respectively. The main lock body and auxiliary lock bodies are connected by a linkage rod, ensuring that the movement of the main lock body can synchronously affect the upper and lower auxiliary lock bodies, thereby achieving the overall locking or unlocking function.

[0003] Traditional one-piece door locks lack a mechanism to detect whether the main and auxiliary lock bolts have correctly extended and retracted during locking and unlocking. This results in users not receiving clear feedback on the lock's status, easily leading them to mistakenly believe the lock is securely locked or unlocked when in reality a component may not have fully moved, posing a security risk. Due to the lack of precise positional feedback, this uncertainty may lead to frequent inspections over long-term use, increasing maintenance costs. Furthermore, over time, improper operation may cause wear or damage to the internal mechanical structure.

[0004] As mentioned above, due to the lack of effective testing mechanisms, existing integrated hook locks do not provide intuitive physical feedback to users after locking or unlocking. This makes it difficult for users to determine whether the operation was successful, especially in low light or when their attention is distracted, easily leading to misjudgments and potentially unnecessary further actions. When users mistakenly believe the lock is not fully locked, they may continue to rotate the handle and latch assembly. This excessive operation not only fails to improve the locking effect but also applies additional pressure to the precision components inside the lock, accelerating their wear and even causing malfunctions. Furthermore, the lock is prone to failure when faced with external impacts or other forms of force. For example, after a slight collision or vibration, a lock that was originally locked may unexpectedly open, or a lock that should be unlocked may become stuck, severely affecting the lock's security performance.

[0005] 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

[0006] This invention overcomes the shortcomings of the above-mentioned technology and provides a one-piece hook lock.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A one-piece hook lock includes a mounting rod on which a main lock body is mounted, and auxiliary lock bodies are symmetrically arranged above and below the main lock body. The main lock body includes a latch and a square latch located below the latch. The main lock body is linked to the auxiliary lock bodies via a linkage rod movably mounted on the mounting rod. The linkage rod has two parts, upper and lower, which are respectively connected to the upper and lower auxiliary lock bodies. The auxiliary lock body includes a lock hook. The main lock body also includes a handle drive assembly, a lock cylinder drive assembly, and a linkage plate. The handle drive assembly is linked to the latch, square latch, and the upper and lower linkage rods via the linkage plate. Moving the handle drive assembly can drive the latch and square latch to extend / retract relative to the main lock body, and simultaneously drive the lock hook to extend / retract relative to the auxiliary lock bodies. A detection mechanism is mounted on the linkage plate. The detection mechanism is used to detect whether the latch and square latch are fully extended / retracted relative to the main lock body, and simultaneously to detect whether the lock hook is fully extended / retracted relative to the auxiliary lock bodies.

[0009] Furthermore, the detection mechanism includes a connector fixedly installed in the main lock body. The connector includes a first connecting shaft and a second connecting shaft that are hollow inside. A pin fixedly connected to the main lock body is installed in the first connecting shaft. A ball bearing that can extend / retract into the second connecting shaft is movably installed in the second connecting shaft through a first spring. The linkage plate is provided with corresponding locking holes for the ball bearing to engage when the linkage plate is in the correct position. There are two locking holes.

[0010] Furthermore, the handle drive assembly includes a fixed base fixedly connected to the main lock body, a gear paddle rotatably connected to the fixed base, a handle paddle rotatably connected to the fixed base and circumferentially limited by the gear paddle, and a latch paddle rotatably connected to the handle paddle. The other end of the latch paddle abuts against the latch, and the latch paddle rotatably limited by the handle paddle. The upper end of the gear paddle is connected to the linkage plate, and the handle paddle has a handle mounting hole. Moving the handle paddle can drive the gear paddle and the latch paddle to rotate.

[0011] Furthermore, the fixed base has an upwardly protruding slide rail, and the lower end of the gear paddle has a first slide groove that is slidably connected to the slide rail. The gear paddle includes a first tooth, and the linkage plate includes a vertically arranged first connecting plate. The first connecting plate has a first tooth groove that cooperates with the first tooth. When the gear paddle rotates, the first tooth enters / exits the first tooth groove, thereby driving the linkage plate to move.

[0012] Furthermore, the handle lever includes a second slide groove, the oblique tongue is sleeved on the handle lever and installed in the second slide groove, and the main lock body is also provided with an elastic reset mechanism located on the right side of the handle lever that can automatically reset the handle lever after it rotates.

[0013] Furthermore, the handle lever includes an outwardly extending protrusion, and the elastic reset mechanism has two parts, symmetrically arranged on the upper and lower sides of the protrusion. The elastic reset mechanism includes a fixed plate fixedly connected to the main lock body, a second spring with one end abutting against the fixed plate, and a guide rod with one end sleeved in the second spring and the other end abutting against the protrusion.

[0014] Furthermore, the lock cylinder drive assembly includes a slider slidably connected to the main lock body and a lock cylinder chuck for driving the slider. The main lock body has a second sliding groove, and the slider is slidably connected to the second sliding groove. The right side of the linkage plate has a slot for the slider to be engaged. When the lock cylinder chuck is moved, the slider can be engaged in the slot, thereby restricting the movement of the linkage plate.

[0015] Furthermore, the upper end of the linkage plate is provided with a vertical second connecting plate, and the lower end is provided with a hook. The second connecting plate is located at the upper end of the tongue. A gear is provided between the upper linkage rod and the second connecting plate. The gear is rotatably installed in the main lock body. The gear includes teeth. A second tooth groove is opened on the second connecting plate. A third tooth groove is opened at the lower end of the upper linkage rod. One end of the gear is connected to the second tooth groove through teeth, and the other end is connected to the third tooth groove through teeth. When the gear rotates, the teeth on the corresponding sides respectively enter / exit the second tooth groove and the third tooth groove, thereby driving the upper linkage rod to move. The hook is engaged with the lower linkage rod, thereby driving the lower linkage rod to move.

[0016] Furthermore, the square tongue includes a locking tongue connecting plate, the locking tongue connecting plate is provided with a guide groove, the guide groove includes a locking end and an unlocking end, and the linkage piece is provided with a pin that can move in the guide groove.

[0017] Furthermore, the secondary lock body is provided with a rotating shaft, and the lock hook is rotatably connected to the rotating shaft. The lock hook includes a second tooth, and the linkage rod is provided with a fourth tooth groove that cooperates with the second tooth. When the linkage rod moves, the second tooth enters / exits the fourth tooth groove, thereby driving the lock hook to extend and retract relative to the secondary lock body. The lock hook is provided with a limiting ramp.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This design uses a linkage plate within the main lock body to connect the upper and lower linkage rods. This allows the action of the handle drive assembly to be transmitted to the latch, square bolt, and upper and lower linkage rods, thereby driving the hook lock action of the secondary lock body. This linkage structure is convenient to operate, has good stability, and ensures the consistency of all locking components, reducing the risk of users taking improper actions due to misjudging the lock's status. For example, continuing to rotate the handle when the lock is already engaged will not damage the lock because all components are correctly locked.

[0020] 2. This design incorporates a detection mechanism within the main lock body to detect and confirm whether the latch, block latch, and lock hook are correctly extended or retracted. This feature not only ensures accuracy and stability during locking and unlocking but also provides users with a clear physical indication, helping them easily assess the lock's status and preventing excessive rotation of the handle drive assembly, thus protecting internal components from damage. The detection mechanism not only enhances the stability of the integrated hook lock in both locked and unlocked states but also mitigates the impact of external impacts on the lock's condition to a certain extent. Even in unexpected situations, it effectively maintains the lock's locked and unlocked states, providing enhanced security. Attached Figure Description

[0021] Figure 1 This is the overall structural diagram of the integrated hook lock in this case.

[0022] Figure 2 This is one of the structural diagrams of the main lock body of the integrated hook lock in this case.

[0023] Figure 3 This is a structural diagram of the linkage device and testing institution in this case.

[0024] Figure 4 This is the second structural diagram of the main lock body of the integrated hook lock in this case.

[0025] Figure 5 This is a structural diagram of the handle and peach-picking component in this case.

[0026] Figure 6 A schematic diagram of the secondary lock body of a one-piece hook lock. Detailed Implementation

[0027] 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:

[0028] For ease of description and understanding, please refer to the following for the positional relationships of components in this case, including front, back, top, bottom, left, right, inside, and outside. Figure 1 , Figure 4 The indicated direction.

[0029] like Figures 1 to 6As shown, this invention provides a one-piece hook lock, including a mounting rod 100. The mounting rod 100 is the basic component of the entire one-piece hook lock, serving as a bridge connecting the main lock body 1 and the auxiliary lock body 2, and also providing an installation and support platform for other components, while facilitating the installation of the one-piece hook lock onto a door panel. The main lock body 1 is mounted on the mounting rod 100, with auxiliary lock bodies 2 symmetrically arranged above and below the main lock body 1. The main lock body 1 includes a bevel latch 11 and a square latch 12 located below the bevel latch 11. In specific implementation, the bevel latch 11 is used for quick and automatic locking and closing of the door, while the square latch 12 is used to further provide a more secure locking effect, generally used for deadbolt locking. The main lock body 1 is linked to the auxiliary lock body 2 through a linkage rod 3 movably mounted on the mounting rod 100. The linkage rod 3 has two parts, upper and lower, which are respectively connected to the upper and lower auxiliary lock bodies 2. The upper and lower linkage rods 3 respectively enable the linkage between the upper and lower auxiliary lock bodies 2 and the main lock body 1. This linkage structure ensures the consistency and synchronization of the main lock body 1 and the auxiliary lock body 2 when locking and unlocking. When the oblique latch 11 and square latch 12 in the main lock body 1 extend or retract, the linkage rod 3 will correspondingly drive the lock hook 21 in the auxiliary lock body 2 to complete the same extension or retraction action. The auxiliary lock body 2 includes the lock hook 21. Compared with the traditional square latch or oblique latch, the lock hook 21 provides an additional locking point, especially forming a closed loop between the door frame and the door panel. This design makes it more difficult for unauthorized intruders to break the lock by prying or other means. The hook-shaped latch can better resist external impact and prying attempts because its shape design makes it difficult to be forcibly pushed open or pulled out even under large lateral forces. The main lock body 1 also includes a handle drive assembly 13, a lock cylinder drive assembly 14, and a linkage plate 15. In practice, the user can lock and unlock the integrated hook lock by moving the handle drive assembly 13. Users can also use a key to drive the lock cylinder drive assembly 14 to lock and unlock the latch 12. That is, the lock cylinder drive assembly 14 is used to lock and unlock the latch 12. When the latch 12 is locked, the linkage plate 15 is also locked. At this time, the handle drive assembly 13 is also locked and cannot be moved. The entire integrated hook lock is in a locked state. Only after the lock cylinder drive assembly 14 is unlocked by using the key, can the handle drive assembly 13 be rotated to lock and unlock. The handle drive assembly 13 is connected to the latch 11, the latch 12, and the upper and lower linkage rods 3 via the linkage plate 15. Moving the handle drive assembly 13 can drive the latch 11 and the latch 12 to extend / retract relative to the main lock body 1, and simultaneously drive the lock hook 21 to extend / retract relative to the secondary lock body 2. In practice, users can control the movement of the latch 11, the latch 12, and the upper and lower linkage rods 3 by moving the handle drive assembly 13, thereby locking or unlocking the entire integrated hook lock. When the user moves the handle drive assembly 13, the action is transmitted to the oblique tongue 11, the square tongue 12 and the upper and lower linkage rods 3 through the linkage plate 15, so that these components move synchronously.Specifically, the latch bolt 11 and the square bolt 12 extend or retract relative to the main lock body 1, while the lock hook 21 also extends or retracts relative to the auxiliary lock body 2. This design achieves linkage between the handle drive assembly 13, the latch bolt 11, the square bolt 12, and the upper and lower linkage rods 3 by setting a linkage plate 15, thereby realizing the linkage between the main lock body 1 and the auxiliary lock body 2. The structure is simple, stable, has strong linkage, and a fast response speed. A detection mechanism is installed on the linkage plate 15. This mechanism is used to detect whether the latch bolt 11 and the square bolt 12 have extended / retracted properly relative to the main lock body 1, and simultaneously to detect whether the lock hook 21 has extended / retracted properly relative to the auxiliary lock body 2. By setting up this detection mechanism, the internal components of the main lock body 1 can be effectively protected. The detection mechanism checks whether the latch bolt 11 and square bolt 12 are fully extended / retracted relative to the main lock body 1, that is, whether the main lock body 1 is fully locked or unlocked, and simultaneously whether the secondary lock body 2 is fully locked or unlocked. This provides physical feedback to the user and effectively prevents the user from excessively rotating the handle drive assembly 13 when the integrated lock is fully locked or unlocked, thus preventing damage to the entire lock and extending its service life. Secondly, the detection mechanism effectively ensures the stability of the integrated lock during locking and unlocking, maintaining stability under external impacts, reducing the likelihood of failure, and providing good anti-theft performance.

[0030] like Figures 2-4As shown, specifically, the detection mechanism includes a connector 16 fixedly installed within the main lock body 1, providing a support platform. The connector 16 includes a hollow first connecting shaft 161 and a hollow second connecting shaft 162. A pin 1611, fixedly connected to the main lock body 1, is installed in the first connecting shaft 161. The pin 1611 secures the first connecting shaft 161, thus fixing the connector 16 and preventing its movement, providing stable support for the second connecting shaft 162. A ball bearing 1622, which can extend / retract, is movably installed in the second connecting shaft 162 via a first spring 1621. Two locking holes 151 are correspondingly provided on the linkage plate 15, allowing the ball bearing 1622 to engage when the linkage plate 15 is in its correct position. The first spring 1621 imparts a certain elasticity to the ball bearing 1622, enabling it to freely extend and retract within the second connecting shaft 1622 to adapt to different operating states. When the linkage plate 15 is in position, the ball bearing 1622 can engage with the locking hole 151 on the linkage plate, providing clear physical feedback. This design uses two locking holes 151 to engage with the ball bearing 1622. One locking hole 151 is used to engage the ball bearing 1622 when the latch bolt 11 and the square bolt 12 are fully extended relative to the main lock body 1, and the locking hook 21 is fully extended relative to the secondary lock body 2. This indicates that the integrated hook lock is locked at this point. The engagement of the ball bearing 1622 with the locking hole 151 increases the tactile feedback of locking, providing a physical indication to the user. This effectively prevents the user from excessively rotating the handle and latch assembly after locking, which could damage internal components. Simultaneously, it provides a certain locking force in the locked state, effectively preventing the main and secondary lock bodies from failing to lock due to external impacts, resulting in a high safety factor and good stability. Another locking hole 151 is used to engage the ball bearing 1622 when the bolt 11 and the square bolt 12 are retracted relative to the main lock body 1 and the locking hook 21 is retracted relative to the secondary lock body 2, which is the unlocked state. The function and beneficial effect of this locking hole are the same as those described above for the locked state of the integrated hook lock in this case.

[0031] Specifically, such as Figures 2-5As shown, the handle drive assembly 13 includes a fixed base 131 fixedly connected to the main lock body 1, a gear lever 132 rotatably connected to the fixed base 131, a handle lever 133 rotatably connected to the fixed base 131 and circumferentially limited by the gear lever 132, and a latch lever 134 rotatably connected to the handle lever 133. The fixed base 131 is fixedly connected to the main lock body 1, serving as the basic support for the entire handle drive assembly 13, providing a stable mounting platform for the gear lever 132, handle lever 133, and latch lever 134, and ensuring their operation in the correct position. The gear lever 132 transmits the movement of the handle lever 133 to the linkage plate 15, thereby controlling the movement of the latch lever 11, square bolt 12, and lock hook 21, ensuring the consistency and stability of the entire assembly during locking and unlocking. The gear lever 132 and the handle lever 133 form a circumferential limiting engagement, limiting the rotation angle and ensuring the accuracy of the locking and unlocking strokes. This circumferential limiting engagement design ensures that the gear lever 132 can only rotate within a specific range, guaranteeing consistency in each operation. The other end of the latch lever 134 abuts against the latch 11, allowing the latch 11 to retract relative to the main lock body 1 for unlocking. The latch lever 134 and the handle lever 133 form a circumferential limiting engagement, limiting the rotation angle and ensuring the accuracy and consistency of the latch 11's retraction and unlocking stroke relative to the main lock body 1. The upper end of the gear lever 132 connects to the linkage plate 15, enabling linkage between the handle drive assembly 13 and the linkage plate 15. The gear lever 132 transmits its action to other corresponding components through the linkage plate 15, achieving synchronous control between the main lock body 1 and the secondary lock body 2, ensuring that the main lock body 1 and the secondary lock body 2 complete the same locking or unlocking action at the same time. The handle lever 133 has a handle mounting hole 1331 for the user to install a door handle, allowing the user to drive the handle drive assembly 13 through the door handle to lock and unlock the integrated hook lock. In practice, lifting the handle locks the integrated hook lock, while pressing it down unlocks it. Moving the handle lever 133 rotates the gear lever 132 and the latch lever 134. The circumferential limiting mechanism described here means that the gear lever 132, handle lever 133, and latch lever 134 are designed to limit their rotation angles, effectively determining the locking and unlocking strokes. In other words, moving the handle lever 133 in either forward or reverse direction will rotate the gear lever 132 and the latch lever 134, but all three will only rotate simultaneously after reaching a certain rotation point.

[0032] Furthermore, continue as Figures 2-5 As shown, the fixed base 131 has an upwardly protruding slide rail 1311, and the lower end of the gear pawl 132 has a first slide groove 1321 that is slidably connected to the slide rail 1311.

[0033] The mounting base 131 provides a stable mounting platform for the gear paddle 132 and guides its movement path via the slide rail 1311, enhancing the stability of their relative movement and reducing misoperation caused by external vibration or impact. The slide rail 1311 ensures that the gear paddle 132 slides along a predetermined trajectory, improving accuracy and reliability. The gear paddle 132 includes a first tooth 1322, and the linkage plate 15 includes a vertically arranged first connecting plate 152 with a first tooth groove 1521 that mates with the first tooth 1322. Through the engagement of the first tooth 1322 and the first tooth groove 1521 on the linkage plate 15, the user rotates the gear paddle 132 when using the handle drive assembly 13, thereby driving the linkage plate 15 to move, effectively realizing the linkage between the gear paddle 132 and the linkage plate 15. This engagement of the tooth and the groove makes the transmission more stable, the structure simple to manufacture and assemble, and the linkage good. The mating design of the first tooth 1322 and the first tooth groove 1521 ensures that the gear lever 132 can accurately transmit motion to the linkage plate 15 every time it rotates. The first tooth 1322 and the corresponding first tooth groove 1521 form a stable contact point, avoiding errors caused by sliding or friction. Due to the tight fit between the first tooth 1322 and the first tooth groove 1521, the same stroke and effect can be achieved in each operation, improving the reliability and repeatability of the system. When the gear lever 132 rotates, the first tooth 1322 enters / exits the first tooth groove 1521, thereby driving the linkage plate 15 to move. The linkage plate 15 then drives the square tongue 12 and the linkage rod 3 to move, thereby causing the lock hook 21 under the main lock body 1 to extend / retract relative to the secondary lock body 2, performing locking and unlocking operations. In practice, to make the linkage between the gear paddle 132 and the linkage plate 15 more stable and the unlocking and locking rotation stroke more reasonable, the first paddle tooth 1322 and the first tooth groove 1521 are respectively set to three or more, but not limited to this number. Users can set a suitable number according to their needs, or adjust the spacing of the first paddle tooth 1322 and the spacing of the first tooth groove 1521 to set a suitable number.

[0034] Continue as Figures 2-5As shown, the handle lever 133 includes a second slide groove 1332, and the latch lever 134 is sleeved on the handle lever 133 and installed in the second slide groove 1332. In specific implementation, when the latch lever 134 slides to a certain position in the second slide groove 1332, it can rotate with the handle lever 133 to control the retraction of the latch 11. This sliding connection improves the stability and smoothness of the movement of the latch lever 134. The latch 11 is elastically installed in the main lock body 1 so that it automatically extends relative to the main lock body 1 after the latch lever 134 is reset. This elastic reset structure of the latch 11 is a well-known technology in the field of locks, and it is not the focus of this utility model, so it will not be described in detail. Those skilled in this art can design according to actual usage requirements, but are not limited thereto. The main lock body 1 is also equipped with a flexible reset mechanism 17 located on the right side of the handle turner 133, which automatically resets the handle turner 133 after rotation. When the handle turner 133 is rotated to unlock or lock, the flexible reset mechanism 17 ensures it always returns to its initial position. The flexible reset mechanism 17 ensures that the handle turner 133 returns to its initial position after each operation, preventing accidental operation due to failure to reset. Users do not need to manually reset the handle turner 133, improving ease of use.

[0035] Specifically, such as Figure 2 , Figure 4 , Figure 5As shown, the handle lever 133 includes an outwardly extending protrusion 1333. The protrusion 1333 provides a contact point for the elastic reset mechanism 17, enabling the handle lever to automatically reset after rotation. Two elastic reset mechanisms 17 are provided, symmetrically arranged on the upper and lower sides of the protrusion 1333. These two mechanisms ensure that the handle lever 133 always resets to its initial position after both unlocking and locking, improving stability and convenience. The elastic reset mechanism includes a fixed plate 171 fixedly connected within the main lock body 1, a second spring 172 with one end abutting against the fixed plate 171, and a guide rod 173 with one end sleeved within the second spring 172 and the other end abutting against the protrusion 1333. The fixing plate 171 is fixedly connected inside the main lock body 1, serving as the basic support for the entire elastic reset mechanism 17. It provides a stable mounting platform for the second spring 172 and the guide rod 173, ensuring they operate in the correct positions and guaranteeing that the elastic reset mechanism 17 can move accurately along a predetermined path, thus improving the accuracy and reliability of the reset. The main function of the second spring 172 is to provide restoring force. When the handle lever 133 is rotated, the second spring 172 is compressed and stores energy because the fixing plate 171 presses against it. When the user releases the handle, the second spring 172 releases its energy, pushing the guide rod 173 and causing the handle lever 133 to automatically reset. The guide rod 173 transmits the elastic force provided by the second spring 172 to the convex strip 1333, thereby pushing the handle lever 133 to reset. The guide rod 173 also acts as a guide, ensuring that the movement of the handle lever 133 is smooth and follows a predetermined path during the reset process.

[0036] Furthermore, such as Figures 2-4 As shown, the lock cylinder drive assembly 14 includes a slider 141 slidably connected within the main lock body 1 and a lock cylinder chuck 142 for driving the slider. A second slide groove 1332 is provided on the main lock body 1, and the slider 141 is slidably connected within this groove. A slot 153 is provided on the right side of the linkage plate 15, allowing the slider 141 to engage. When the lock cylinder chuck 142 is moved, the slider 141 engages in the slot 153, thus restricting the movement of the linkage plate 15. This locks the latch 12, the entire linkage plate 15, and the linkage rod 3. At this time, both the main lock body 1 and the secondary lock body 2 are locked and can only be unlocked with a key. Furthermore, the handle drive assembly 13 cannot rotate. Through the cooperation of the slider 141 and the second slide groove 1332, synchronous control between the main lock body 1 and the secondary lock body 2 is achieved. This sliding connection method is convenient to operate and provides good stability.

[0037] Furthermore, such as Figures 2-3As shown, the upper end of the linkage plate 15 is provided with a vertical second connecting plate 154, and the lower end is provided with a hook 156. The second connecting plate 154 is located at the upper end of the tongue 11. A gear 18 is provided between the upper linkage rod 3 and the second connecting plate 154. The gear 18 is rotatably installed in the main lock body 1. The gear 18 includes gear teeth 181. The second connecting plate 154 has a second tooth groove 1541. The lower end of the upper linkage rod 3 has a third tooth groove 31. One end of the gear 18 is connected to the second tooth groove 1541 through the gear teeth 181, and the other end is connected to the third tooth groove 31 through the gear teeth 181. When the gear 18 rotates, the corresponding gear teeth 181 respectively enter / exit the second tooth groove 1541 and the third tooth groove 31, thereby driving the upper linkage rod 3 to move. The hook 156 hooks with the lower linkage rod 3, thereby driving the lower linkage rod 3 to move. This design achieves the linkage between the linkage plate 15 and the upper linkage rod 3 by setting gear 18, resulting in a simple structure and good stability. The hook 156 directly connects the linkage plate 15 and the lower linkage rod 3, ensuring that the lower linkage rod 3 moves synchronously with the linkage plate 15. This linkage between the main lock body 1 and the upper and lower auxiliary lock bodies 2 is achieved through the linkage plate 15, ensuring consistency in the linkage between the main lock body 1 and the upper and lower auxiliary lock bodies 2, which is also the consistency of the integrated hook lock in this design during locking and unlocking. It should be noted that the beneficial effect of the linkage between the gear tooth 181 and the third tooth groove 31 is similar to the effect of the structural cooperation between the first tooth 1322 and the first tooth groove 1521 mentioned above. The selection and setting of their quantities are also the same. Therefore, the similar and identical parts will not be elaborated further here.

[0038] Continue as Figures 2-3 As shown, the square tongue 12 further includes a latch connecting plate 121, on which a guide groove 1211 is provided. The guide groove 1211 includes a locking end 12111 and an unlocking end 12112. A pin 155 that can move in the guide groove 1211 is provided on the linkage plate 15. The guide groove 1211 provides a movement path for the pin 155, ensuring that the square tongue 12 can accurately switch between the locking end 12111 and the unlocking end 12112 when the linkage plate 15 is moving, thus ensuring the accuracy and reliability of the square tongue 12's operation. In specific implementation, when the square tongue 12 extends and locks in place relative to the main lock body 1, the pin 155 engages with the locking end 12111. The locking end 12111 effectively prevents the pin 155 from disengaging when the linkage plate 15 is not moving, effectively ensuring the stability of the lock and improving the anti-theft performance. Correspondingly, when the square tongue 12 retracts into the main lock body 1 and is unlocked, the pin 155 is engaged in the unlocking end 12112. The unlocking end 12112 can effectively prevent the pin 155 from coming out when the non-linking piece 15 is moving, effectively ensuring the stability after unlocking and preventing accidental locking due to external force, thus providing good security.

[0039] like Figure 1 , Figure 6 As shown, the secondary lock body 2 further includes a rotating shaft 22, to which the lock hook 21 is rotatably connected. The rotating shaft 22 provides rotational support for the lock hook 21, ensuring its smooth extension and retraction. The lock hook 21 includes a second tooth 211, and a fourth tooth groove 32 that engages with the second tooth 211 is provided on the linkage rod 3. The engagement of the second tooth 211 with the fourth tooth groove 32 on the linkage rod 3 realizes the transmission from the linkage rod 3 to the lock hook 21, that is, the linkage between the main lock body 1 and the secondary lock body 2, enabling the lock hook 21 to extend and retract synchronously with the movement of the linkage rod 3. When the linkage rod 3 moves, the second tooth 211 enters / exits the fourth tooth groove 32, thereby driving the lock hook 21 to extend and retract relative to the secondary lock body 2. The lock hook 21 is provided with a limiting ramp 212. When the lock hook 21 is fully extended from the secondary lock body 2, the limiting ramp 212 abuts against the wall of the mounting rod 100 to prevent illegal unlocking in the locked state. Specifically, it prevents criminals from using tools such as cards to insert the lock hook 21 and retract it into the secondary lock body 2.

[0040] As stated above, this case protects a one-piece hook lock, 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. A one-piece hook lock, comprising a mounting rod (100), wherein a main lock body (1) and auxiliary lock bodies (2) symmetrically arranged above and below the main lock body (1) are mounted on the mounting rod (100), the main lock body (1) comprising a latch (11) and a square latch (12) located below the latch (11), characterized in that: The main lock body (1) is linked to the secondary lock body (2) via a linkage rod (3) movably mounted on the mounting rod (100). The linkage rod (3) has two parts, one above the other, which are respectively connected to the upper and lower secondary lock bodies (2). The secondary lock body (2) includes a lock hook (21). The main lock body (1) also includes a handle drive assembly (13), a lock cylinder drive assembly (14), and a linkage plate (15). The handle drive assembly (13) is connected to the latch bolt (11), the square bolt (12), and the upper lock body (13) via the linkage plate (15). The lower linkage rod (3) is linked and connected. Moving the handle drive assembly (13) can drive the tongue (11) and the square tongue (12) to extend / retract relative to the main lock body (1), and at the same time drive the lock hook (21) to extend / retract relative to the secondary lock body (2). The linkage plate (15) is equipped with a detection mechanism. The detection mechanism is used to detect whether the tongue (11) and the square tongue (12) are in place relative to the main lock body (1), and at the same time detect whether the lock hook (21) is in place relative to the secondary lock body (2).

2. The integrated hook lock according to claim 1, characterized in that: The detection mechanism includes a connector (16) fixedly installed inside the main lock body (1). The connector (16) includes a first connecting shaft (161) and a second connecting shaft (162) with a hollow interior. A pin (1611) fixedly connected to the main lock body (1) is installed in the first connecting shaft (161). A ball bearing (1622) that can extend / retract into the second connecting shaft (162) is movably installed in the second connecting shaft (162) through a first spring (1621). A corresponding locking hole (151) is provided on the linkage plate (15) for the ball bearing (1622) to be engaged when the linkage plate (15) is in the moving position. There are two locking holes (151).

3. A one-piece hook lock according to claim 2, characterized in that: The handle drive assembly (13) includes a fixed base (131) fixedly connected to the main lock body (1), a gear paddle (132) rotatably connected to the fixed base (131), a handle paddle (133) rotatably connected to the fixed base (131) and circumferentially limited to the gear paddle (132), and a tongue paddle (134) rotatably connected to the handle paddle (133). The other end of the tongue paddle (134) abuts against the tongue (11). The tongue paddle (134) circumferentially limited to the handle paddle (133). The upper end of the gear paddle (132) is connected to the linkage plate (15). The handle paddle (133) has a handle mounting hole (1331). Moving the handle paddle (133) can drive the gear paddle (132) and the tongue paddle (134) to rotate.

4. A one-piece hook lock according to claim 3, characterized in that: The fixed base (131) has an upwardly protruding slide rail (1311). The lower end of the gear paddle (132) has a first slide groove (1321) that is slidably connected to the slide rail (1311). The gear paddle (132) includes a first tooth (1322). The linkage plate (15) includes a vertically arranged first connecting plate (152). The first connecting plate (152) has a first tooth groove (1521) that cooperates with the first tooth (1322). When the gear paddle (132) rotates, the first tooth (1322) enters / exits the first tooth groove (1521) and thus drives the linkage plate (15) to move.

5. A one-piece hook lock according to claim 3, characterized in that: The handle lever (133) includes a second slide groove (1332), the oblique tongue lever (134) is sleeved on the handle lever (133) and installed in the second slide groove (1332), and the main lock body (1) is also provided with an elastic reset mechanism (17) located on the right side of the handle lever (133) that can automatically reset the handle lever (133) after rotation.

6. A one-piece hook lock according to claim 5, characterized in that: The handle lever (133) includes an outwardly extending protrusion (1333). The elastic reset mechanism (17) has two parts, which are symmetrically arranged on the upper and lower sides of the protrusion (1333). The elastic reset mechanism includes a fixed plate (171) fixedly connected to the main lock body (1), a second spring (172) with one end abutting on the fixed plate (171), and a guide rod (173) with one end sleeved in the second spring (172) and the other end abutting on the protrusion (1333).

7. A one-piece hook lock according to claim 2, characterized in that: The lock cylinder drive assembly (14) includes a slider (141) slidably connected to the main lock body (1) and a lock cylinder chuck (142) for driving the slider. The main lock body (1) has a second slide groove (1332) and the slider (141) is slidably connected to the second slide groove (1332). The linkage piece (15) has a slot (153) on the right side for the slider (141) to be inserted into. When the lock cylinder chuck (142) is moved, the slider (141) can be inserted into the slot (153) to restrict the movement of the linkage piece (15).

8. A one-piece hook lock according to any one of claims 1-7, characterized in that: The upper end of the linkage plate (15) is provided with a vertical second connecting plate (154), and the lower end is provided with a hook (156). The second connecting plate (154) is located at the upper end of the tongue (11). A gear (18) is provided between the upper linkage rod (3) and the second connecting plate (154). The gear (18) is rotatably installed in the main lock body (1). The gear (18) includes teeth (181). The second connecting plate (154) is provided with a second tooth groove (1541). The lower end of the linkage rod (3) is provided with a third tooth groove (31). One end of the gear (18) is connected to the second tooth groove (1541) through the tooth (181), and the other end is connected to the third tooth groove (31) through the tooth (181). When the gear (18) rotates, the corresponding tooth (181) enters / exits the second tooth groove (1541) and the third tooth groove (31) respectively, thereby driving the upper linkage rod (3) to move. The hook (156) is hooked to the lower linkage rod (3), thereby driving the lower linkage rod (3) to move.

9. A one-piece hook lock according to claim 8, characterized in that: The square tongue (12) includes a locking tongue connecting plate (121), and a guide groove (1211) is provided on the locking tongue connecting plate (121). The guide groove (1211) includes a locking end (12111) and an unlocking end (12112). The linkage piece (15) is provided with a pin (155) that can move in the guide groove (1211).

10. A one-piece hook lock according to claim 8, characterized in that: The secondary lock body (2) is provided with a rotating shaft (22), and the lock hook (21) is rotatably connected to the rotating shaft (22). The lock hook (21) includes a second tooth (211), and the linkage rod (3) is provided with a fourth tooth groove (32) that cooperates with the second tooth (211). When the linkage rod (3) moves, the second tooth (211) enters / exits the fourth tooth groove (32), thereby driving the lock hook (21) to extend and retract relative to the secondary lock body (2). The lock hook (21) is provided with a limiting ramp (212).

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