A lock with double locking rods

Abstract

This application provides a lock with double locking rods, belonging to the field of lock technology. It includes a lock shell, a lock cylinder, a first locking rod and a second locking rod, and a linkage assembly. The linkage assembly includes a lock plate, a rotating component, a first pull rod, a second pull rod, and a connecting rod. The lock plate is mounted on the lock cylinder and driven to rotate by it, and has a linkage arm. The first pull rod has a first linkage hole, and its other end is connected to the first locking rod. The second pull rod has a second linkage hole, and its other end is connected to the second locking rod. The rotating component is rotatably mounted on the lock shell, and has a first column and a second column at its two ends. The first column slides into the first linkage hole, and the second column slides into the second linkage hole. One end of the connecting rod is hinged to the linkage arm, and the other end is hinged to the rotating component. This invention utilizes a linkage assembly to achieve synchronous or asynchronous movement of the double locking rods, significantly improving the anti-theft performance and stability of the lock, and also features a simplified overall structure and good stability.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a lock with double locking rods. Background Technology

[0002] Currently, there are many types of locks on the market, but most traditional locks rely primarily on a single bolt for locking. This single-bolt locking mechanism is often inadequate against forced entry or technical opening, making it easy to pry open or break, resulting in insufficient security. For example, some door locks only have a single bolt inserted into the keyhole of the door frame. When the bolt is subjected to external force or manipulated with a specific tool, it can easily disengage from the keyhole, allowing the door to be illegally opened. This design limitation makes existing locks significantly weak in terms of anti-theft performance, failing to meet people's growing security needs. Therefore, existing technology urgently needs improvement to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a lock with a double locking bar.

[0004] The technical solution adopted by this utility model is as follows: This application provides a lock with double locking rods, including a lock shell, a lock cylinder, a first locking rod and a second locking rod, and a linkage assembly. The first locking rod and the second locking rod are both vertically slidably disposed on the lock shell. The linkage assembly includes a lock plate, a rotating member, a first pull rod, a second pull rod, and a connecting rod. The lock plate is disposed on the lock cylinder and driven to rotate by it, and is provided with a linkage arm. The first pull rod has a first linkage hole at one end near the rotating member, and its other end is connected to the first locking rod. The second pull rod has a second linkage hole at one end near the rotating member, and its other end is connected to the second locking rod. The rotating member is rotatably disposed on the lock shell, and its two ends are respectively provided with a first column and a second column. The first column slides in conjunction with the first linkage hole, and the second column slides in conjunction with the second linkage hole. One end of the connecting rod is hinged to the linkage arm, and its other end is hinged to the rotating member. When the lock cylinder rotates, the lock plate drives the rotating member to rotate through the linkage arm, causing the first pull rod and the second pull rod to move towards each other or away from each other.

[0005] In some embodiments, the first column and the second column are integrally formed at both ends of the rotating component, and are riveted flat after passing through the first linkage hole and the second linkage hole respectively to form an axial limit.

[0006] In some embodiments, the connecting rod is disposed below the rotating member, the first pull rod and the second pull rod are located above the rotating member, and the locking plate is located between the first pull rod and the connecting rod.

[0007] In some embodiments, the lock housing further includes two fasteners respectively disposed at both ends of the lock housing. The fasteners are provided with threaded holes, forming a channel with the lock housing that runs through the first locking rod and the second locking rod along their moving directions. The first locking rod and the second locking rod are provided with slots along their moving directions. The lock housing is provided with through holes corresponding to the threaded holes, and bolts are used to connect the through holes, slots and threaded holes.

[0008] In some embodiments, the first pull rod has a connecting groove at one end near the first locking rod, and the first locking rod has a connecting block at one end near the first pull rod, the connecting block being inserted into the connecting groove; the second pull rod has a connecting hole at one end near the second locking rod, and the second locking rod has a connecting rod at one end near the second pull rod, the connecting rod being inserted into the connecting hole.

[0009] In some embodiments, the first linkage hole is an elongated hole arranged perpendicular to the moving direction of the first locking rod, and the second linkage hole is an elongated hole arranged in the same direction.

[0010] In some embodiments, the system further includes a first limiting structure and a second limiting structure, wherein the first limiting structure is used to cause the first pull rod to move only in the direction of movement of the first locking rod, and the second limiting structure is used to cause the second pull rod to move only in the direction of movement of the second locking rod.

[0011] The beneficial effects of this utility model are as follows: By setting a first locking rod and a second locking rod, and using a linkage component to realize the synchronous or asynchronous movement of the two locking rods, the anti-theft performance and stability of the lock are significantly improved, and the overall structure is simple and has good stability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0013] Figure 1 This is a schematic diagram of a lock with double locking rods according to the present invention; Figure 2 This is a schematic diagram of the locked state of the linkage component in this utility model; Figure 3 This is a schematic diagram of the unlocked state of the linkage component in this utility model; Figure 4 This is a schematic diagram of the first pull rod in this utility model; Figure 5 This is a schematic diagram of the second pull rod in this utility model.

[0014] In the diagram, 1 is the lock housing, 2 is the lock cylinder, 3 is the first locking rod, 4 is the second locking rod, 5 is the lock plate, 6 is the rotating part, 7 is the first pull rod, 8 is the second pull rod, 9 is the connecting rod, 10 is the fixing part, 31 is the connecting block, 41 is the connecting rod, 50 is the linkage arm, 61 is the first column, 62 is the second column, 70 is the first linkage hole, 71 is the connecting groove, 80 is the second linkage hole, and 81 is the connecting hole. Detailed Implementation

[0015] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0016] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0017] It should be noted that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0018] It should be noted that the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0019] It should be noted that the terms "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of this application.

[0020] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0022] Currently, traditional locks generally use a single bolt structure when locking. This structure often exhibits low security when faced with forced entry or technical opening, resulting in property damage or threats to personal safety.

[0023] In response, this application proposes a lock with double locking rods, which significantly improves the anti-theft performance and stability of the lock by introducing a double locking rod design and supplementing it with a precise linkage component. The overall structure is also simplified and has good stability.

[0024] like Figures 1 to 5 As shown, this application provides a lock with double locking rods, including a lock housing 1, a lock cylinder 2, a first locking rod 3 and a second locking rod 4, and a linkage assembly. Both the first locking rod 3 and the second locking rod 4 are vertically slidably mounted on the lock housing 1. The first locking rod 3 and the second locking rod 4 are key components for realizing the locking function of the lock; they are typically elongated and can reciprocate linearly inside the lock housing 1. When the lock is in the locked state, the first locking rod 3 and the second locking rod 4 extend out of the lock housing 1 and insert into the keyhole on the door frame or door leaf, thereby securing the door. When the lock is in the unlocked state, the first locking rod 3 and the second locking rod 4 retract into the lock housing 1, allowing the door to open freely.

[0025] The lock cylinder 2 is the core component of the lock, used to receive the key and turn it, thereby driving the locking and unlocking mechanism of the lock. The lock cylinder 2 is usually composed of multiple pins or leaves, and it can only rotate freely when the correct key is inserted.

[0026] The linkage assembly includes a locking plate 5, a rotating component 6, a first pull rod 7, a second pull rod 8, and a connecting rod 9. The locking plate 5 is disposed on the lock cylinder 2 and driven to rotate by it. A linkage arm 50 is disposed on the locking plate 5. The linkage arm 50 can be a protrusion integrally formed on the locking plate 5, or it can be a component fixedly connected to the locking plate 5 by other means. Generally, the former is preferred. The design of the linkage arm 50 also makes the overall structure more compact, reduces the number of parts, and lowers the manufacturing cost.

[0027] The first pull rod 7 has a first linkage hole 70 at one end near the rotating member 6, and its other end is connected to the first locking rod 3. The second pull rod 8 has a second linkage hole 80 at one end near the rotating member 6, and its other end is connected to the second locking rod 4. The rotating member 6 is rotatably mounted on the lock housing 1, and its two ends are respectively provided with a first column 61 and a second column 62. The first column 61 is slidably engaged with the first linkage hole 70, and the second column 62 is slidably engaged with the second linkage hole 80. One end of the connecting rod 9 is hinged to the linkage arm 50, and the other end is hinged to the rotating member 6. The first column 61 and the second column 62 refer to cylindrical or column-like structures extending from both ends of the rotating member 6. They serve as connecting members and are used to cooperate with the first pull rod 7 and the second pull rod 8. The first linkage hole 70 and the second linkage hole 80 refer to the holes respectively provided on the first pull rod 7 and the second pull rod 8. The shape and size of these holes are designed to allow for sliding engagement with the first column 61 and the second column 62. Because the first column 61 and the second column 62 are engaged with the first linkage hole 70 and the second linkage hole 80, the first pull rod 7 and the second pull rod 8 can better adapt to the rotation of the rotating part 6 during movement, reducing frictional resistance during linkage, avoiding jamming, improving the smoothness and reliability of lock operation, and extending the service life of the lock.

[0028] As a specific implementation, the two ends of the rotating component 6 can be integrally formed with a first column 61 and a second column 62 to simplify the manufacturing process and improve the connection strength. The first linkage hole 70 and the second linkage hole 80 on the first pull rod 7 and the second pull rod 8 can be designed as elongated holes with their length direction perpendicular to the moving direction of the first locking rod 3. This can provide a certain clearance to compensate for manufacturing tolerances and assembly errors while ensuring sliding fit.

[0029] To further ensure the reliability of the connection, the first column 61 can be riveted flat after passing through the first linkage hole 70, and the second column 62 can also be riveted flat after passing through the second linkage hole 80, so as to prevent the columns from falling off and ensure the stability of long-term use.

[0030] When the lock cylinder 2 rotates, the lock plate 5 drives the rotating part 6 to rotate through the linkage arm 50, so that the first pull rod 7 and the second pull rod 8 move towards each other or away from each other. With this configuration, the lock can extend two lock rods at the same time in the locked state, forming a double lock, which greatly enhances the lock's resistance to damage and thus effectively improves the overall security.

[0031] When using the double-bar lock of this embodiment, its working principle is as follows: When the user needs to unlock, the correct key is inserted into the lock cylinder 2 and turned. The rotation of the lock cylinder 2 will cause the lock plate 5 to move accordingly. The movement of the lock plate 5 is transmitted to the rotating member 6 through the connecting rod 9, causing the rotating member 6 to rotate. The rotation of the rotating member 6 will simultaneously drive the first pull rod 7 and the second pull rod 8. Specifically, when the rotating member 6 rotates to the unlock position, the first pull rod 7 and the second pull rod 8 will drive the first locking rod 3 and the second locking rod 4 to retract into the lock housing 1, thereby putting the lock in the unlocked state and allowing the door to be opened freely. Conversely, when the user needs to lock the door, the key is turned again, the lock cylinder 2 drives the lock plate 5 to move, and the rotating member 6 rotates in the opposite direction through the connecting rod 9. The rotation of the rotating member 6 will drive the first pull rod 7 and the second pull rod 8, causing the first locking rod 3 and the second locking rod 4 to extend out of the lock housing 1 and insert into the keyhole on the door frame or door leaf, thereby achieving double locking and preventing the door from being opened. The entire locking and unlocking process, through the precise coordination of the linkage components, achieves synchronous and stable movement of the two locking rods, ensuring the high efficiency and security of the lock.

[0032] In some preferred embodiments, the first linkage hole 70 and the second linkage hole 80 can be machined into elongated holes with smooth inner walls to further reduce the frictional resistance of the first column 61 and the second column 62 during the sliding process. For example, these elongated holes can be formed by precision stamping, milling or laser cutting processes, and the hole walls can be polished.

[0033] In this application, the connecting rod 9 is positioned below the rotating member 6, the first pull rod 7 and the second pull rod 8 are located above the rotating member 6, and the locking plate 5 is located between the first pull rod 7 and the connecting rod 9. This makes the structure of the entire linkage assembly more compact. This arrangement can effectively reduce the overall size of the lock, while simplifying the internal structure and improving the stability and reliability of the lock. In addition, by optimizing the connection method and movement trajectory between the components, friction and wear during movement can be reduced, thereby increasing the service life of the lock.

[0034] It also includes two fixing members 10 respectively disposed at both ends of the lock housing 1. The fixing members 10 are provided with threaded holes, forming a channel with the lock housing 1 that runs through the first locking rod 3 and the second locking rod 4 along their moving directions. The first locking rod 3 and the second locking rod 4 are provided with slots along their moving directions, which provide clearance space for the screws, prevent the screws from interfering with the locking rods, ensure the normal movement of the locking rods, and also serve as a limit. The lock housing 1 is provided with through holes corresponding to the threaded holes. Bolts are connected through the through holes, slots, and threaded holes to form a channel that effectively restricts the moving direction of the locking rods.

[0035] In some embodiments of this application, the first pull rod 7 is provided with a connecting groove 71 at one end near the first locking rod 3, and the first locking rod 3 is provided with a connecting block 31 at one end near the first pull rod 7. The connecting block 31 is inserted into the connecting groove 71. The second pull rod 8 is provided with a connecting hole 81 at one end near the second locking rod 4, and the second locking rod 4 is provided with a connecting rod 41 at one end near the second pull rod 8. The connecting rod 41 is inserted into the connecting hole 81. The dimension of the connecting groove 71 in the moving direction of the first locking rod 3 is larger than the dimension of the connecting block 31. The connecting hole 81 is similar to the connecting rod 41. This allows for detachable connection, facilitating assembly, maintenance, and replacement.

[0036] It also includes a first limiting structure and a second limiting structure. The first limiting structure is used to make the first pull rod 7 move only in the moving direction of the first locking rod 3, and the second limiting structure is used to make the second pull rod 8 move only in the moving direction of the second locking rod 4.

[0037] It should be understood that other lock structures, such as the linkage structure between the lock cylinder and the oblique bolt, and the linkage structure between the lock cylinder and the square bolt, refer to existing mechanical locks.

[0038] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0039] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0040] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A lock with double locking rods, characterized in that, The lock assembly includes a lock case, a lock cylinder, a first locking rod, a second locking rod, and a linkage assembly. The first and second locking rods are vertically slidably mounted on the lock case. The linkage assembly includes a lock plate, a rotating component, a first pull rod, a second pull rod, and a connecting rod. The lock plate is mounted on the lock cylinder and driven to rotate by it, and has a linkage arm. The first pull rod has a first linkage hole near the rotating component at one end, and its other end is connected to the first locking rod. The second pull rod has a second linkage hole near the rotating component at one end, and its other end is connected to the second locking rod. The rotating component is rotatably mounted on the lock case, and has a first column and a second column at each end. The first column slides into the first linkage hole, and the second column slides into the second linkage hole. One end of the connecting rod is hinged to the linkage arm, and the other end is hinged to the rotating component. When the lock cylinder rotates, the lock plate drives the rotating component to rotate via the linkage arm, causing the first and second pull rods to move towards or away from each other.

2. The lock with double locking rods according to claim 1, characterized in that, The first column and the second column are integrally formed at both ends of the rotating part, and after passing through the first linkage hole and the second linkage hole respectively, they are riveted flat to form an axial limit.

3. The lock with double locking rods according to claim 1, characterized in that, The connecting rod is located below the rotating member, the first pull rod and the second pull rod are located above the rotating member, and the locking plate is located between the first pull rod and the connecting rod.

4. A lock with double locking rods according to claim 1, characterized in that, It also includes two fixing members respectively set at both ends of the lock housing. The fixing members are provided with threaded holes, forming a channel between them and the lock housing along the moving direction of the first locking rod and the second locking rod. The first locking rod and the second locking rod are provided with slots along their moving direction. The lock housing is provided with through holes corresponding to the threaded holes, and bolts are used to connect them through the through holes, slots and threaded holes.

5. A lock with double locking rods according to claim 4, characterized in that, The first pull rod has a connecting groove at one end near the first locking rod, and a connecting block is provided at one end of the first locking rod near the first pull rod. The connecting block is inserted into the connecting groove. The second pull rod has a connecting hole at one end near the second locking rod, and a connecting rod is provided at one end of the second locking rod near the second pull rod. The connecting rod is inserted into the connecting hole.

6. A lock with double locking rods according to claim 1, characterized in that, The first linkage hole is an elongated oval hole arranged perpendicular to the moving direction of the first locking rod, and the second linkage hole is an elongated oval hole arranged in the same direction.

7. A lock with double locking rods according to claim 1, characterized in that, It also includes a first limiting structure and a second limiting structure. The first limiting structure is used to make the first pull rod move only in the moving direction of the first locking rod, and the second limiting structure is used to make the second pull rod move only in the moving direction of the second locking rod.

Images