Double-locking body synchronous door lock
Patent Information
- Application Number
- CN202522627132.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-11
AI Technical Summary
Existing mechanical locks have security issues, especially since they can be easily opened "instantly" if the safety latch is not engaged. Fingerprint and password locks still retain the latch in their core design, which poses a risk of being opened.
Design a dual-lock-body synchronous door lock. Through the linkage mechanism of the main lock body and the secondary lock body, the secondary lock body is unlocked simultaneously when the main lock body is unlocked. The unlocking hole of the first locking mechanism is hidden, and the lock cannot be unlocked by using only the key hole of the second locking mechanism, thereby increasing security.
This improves the security of the lock and increases the difficulty of unlocking. The lock is only truly unlocked after both the main and secondary lock bodies are unlocked, preventing a single lock body from being illegally opened.
Smart Images

Figure CN224931491U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart lock technology, specifically a dual-lock-body synchronous door lock. Background Technology
[0002] Currently, locks on the market typically control the movement of the latch using a key lock mechanism or a combination lock mechanism, thereby controlling the locking and unlocking between the latch and the lock housing. The key lock mechanism includes a lock cylinder and a lock block; the lock cylinder controls the movement of the latch by controlling the movement of the lock block. However, current mechanical locks, due to the presence of a keyhole, are easily pried open or opened without damage by malicious individuals with only a few tools and basic lock-picking skills, posing a security risk, especially when the safety catch is not engaged; mechanical locks can be easily opened in seconds. Therefore, fingerprint security locks have emerged on the market. However, current fingerprint and combination locks still retain the lock catch in their core design, merely concealed by an outer cover, yet the risk of being opened remains.
[0003] Therefore, a dual-lock body synchronous door lock is proposed. Utility Model Content
[0004] The purpose of this utility model is to provide a dual-lock synchronous door lock to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-lock body synchronous door lock, including a door body, and further comprising: The main lock body and the auxiliary lock body are placed vertically on the door body; A first locking mechanism and a second locking mechanism are respectively provided for the main lock body and the auxiliary lock body; wherein... The first locking mechanism includes a first front locking lock, a first rear locking lock, and a first locking mounting plate. The first front locking lock includes a first locking control module, a first locking cylinder, and a first locking block that cooperates with the first locking cylinder. The first rear locking lock includes a first locking drive mechanism, a transmission mechanism, and a first control module. One end of the first locking block extends to connect with the transmission mechanism and engages with the locking block in the main lock body to change the movement of the locking hook. The second locking mechanism includes a second front locking lock, a second rear locking lock, and a second locking mounting plate. The second front locking lock includes a clutch drive motor, a clutch, and a clutch output shaft connected to the clutch output end. The second rear locking lock includes a second rear locking handle, a second rear locking cover, and a second front locking reset module. One end of the clutch output shaft extends to connect with one end of the second front locking reset module and engages with the lock block in the secondary lock body to change the movement of the lock hook. When unlocking, the first locking control module sends an unlocking command to the first control module, and the first control module controls the first locking drive mechanism to drive the transmission mechanism to drive the first locking block to unlock the main lock body. After unlocking, the first locking control module sends an unlocking command to the clutch drive motor. After rotating the second locking handle, the clutch output shaft can be driven to rotate to unlock.
[0006] Preferably, the first locking front lock and the first locking mounting plate are respectively placed on both sides of the door body and fixedly installed to the door body through the first locking mounting plate and bolts.
[0007] Preferably, the first locking mechanism further includes a fingerprint password module and a USB power supply module and a voice broadcast module disposed therein. The fingerprint password module sends a fingerprint or password unlocking key to the first locking control module. The USB power supply module and the voice broadcast module are electrically connected and signal connected to the first locking control module, respectively.
[0008] Preferably, the first locking rear lock further includes a communication module, a protective cover, a battery module, and a first locking block knob. The communication module is connected to the first locking control module via wired or wireless means, and the first locking front lock and the protective cover are detachable and installable.
[0009] Preferably, the output end of the first locking drive mechanism is connected to one end of the transmission mechanism via a gear set, and the first locking drive mechanism is signal-connected to the first control module.
[0010] Preferably, the other end of the transmission mechanism is connected to the first locking block knob.
[0011] Preferably, the second locking front lock further includes a second locking front handle, a second locking front cover, and a protective front cover, wherein the clutch is installed inside the second locking front cover and one end of the clutch passes through the second locking front cover and is connected to the second locking front handle.
[0012] Preferably, the second locking rear lock further includes a protective rear plate, the second locking front reset module is embedded inside the second locking rear cover and is encapsulated by the protective rear plate and the second locking rear cover, and the other end of the second locking front reset module passes through the second locking rear cover and is connected to the second locking rear handle.
[0013] Preferably, a fingerprint password module for power supply is provided on one side of the first locking front lock.
[0014] Preferably, a second locking cylinder is provided on the second locking front handle, and a sealing cover is snapped onto one side of the first locking cylinder.
[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention designs a dual-lock-body linkage mechanism, which allows the secondary lock body to unlock simultaneously when the main lock body is unlocked. Furthermore, the unlocking hole of the first locking mechanism is not displayed, so even if the unlocking is attempted solely through the exposed lock hole of the second locking mechanism, it will still be impossible to unlock, thus enhancing security.
[0016] This invention conceals the hole of the first locking cylinder by setting a sealing cover plate, which, together with the exposed keyhole of the second locking mechanism, has a deceptive effect on outsiders. Unlocking a single lock body is not enough to truly unlock the lock; only when both the first locking mechanism and the main lock body are unlocked can the lock be truly unlocked. Attached Figure Description
[0017] Figure 1 This is a view of the overall installation structure of this utility model; Figure 2 This is an exploded view of the overall installation of this utility model; Figure 3 This is a schematic diagram of the structure of the first locking front lock of this utility model from one perspective; Figure 4 This is an exploded view from the second perspective of the first locking front lock of this utility model; Figure 5 This is a schematic diagram of the structure of the first locking rear lock of this utility model from one perspective; Figure 6 This is an exploded view from the second perspective of the first locking rear lock of this utility model; Figure 7 This is an exploded view of the second locking front lock of this utility model; Figure 8 This is an exploded view of the second locking rear lock of this utility model.
[0018] In the picture: 1. Door body; 2. First locking mechanism; 21. First locking front lock; 211. Fingerprint password module; 212. First locking block; 213. First locking cylinder; 2131. Sealing cover; 214. First locking control module; 215. USB power supply module; 216. Voice broadcast module; 22. First locking rear lock; 221. Battery module; 222. First locking block knob; 223. First locking drive mechanism; 224. Transmission mechanism; 225. Communication module; 226. First control module; 227. Protective cover; 23. First locking mounting plate; 3. Main lock body; 4. Second locking mechanism; 41. Second front locking lock; 411. Second front locking handle; 4111. Second locking cylinder; 412. Second front locking cover; 413. Clutch drive motor; 414. Clutch; 415. Clutch output shaft; 416. Protective front cover; 42. Second rear locking lock; 421. Second rear locking handle; 422. Second rear locking cover; 423. Second front locking reset module; 424. Protective rear plate; 43. Second locking mounting plate; 5. Secondary lock body. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Most smart locks currently on the market (smart locks with multiple recognition methods such as password, fingerprint or facial recognition) still have mechanical keyholes. Mechanical key unlocking is still compatible with smart locks and password, fingerprint or facial recognition methods, which means that there is still a risk of the lock being opened through the mechanical keyhole.
[0021] To address the aforementioned problems, this utility model provides a technical solution for a double-lock-body synchronous door lock: Please refer to... Figures 1 to 5 , Currently, commonly used lock unlocking mechanisms on the market employ key lock mechanisms or combination wheel lock mechanisms to control the movement of the lock hook, thereby controlling the locking and unlocking between the lock hook and the lock housing. Key lock mechanisms include a lock cylinder and a lock block; the lock cylinder controls the movement of the lock block, which in turn controls the movement of the lock hook. However, the door lock with a double-lock linkage mechanism provided in this application does not limit the type or style of the lock body. This application uses a key lock mechanism.
[0022] A dual-lock synchronous door lock includes a door body 1, and further includes: a main lock body 3 and a secondary lock body 5 longitudinally positioned on the door body 1; a first locking mechanism 2 and a second locking mechanism 4 respectively provided corresponding to the main lock body 3 and the secondary lock body 5; wherein, the first locking mechanism 2 includes a first locking front lock 21 and a first locking rear lock 22, and a first locking mounting plate 23, the first locking front lock 21 includes a first locking control module 214, a first locking cylinder 213 and a first locking block 212 cooperating with the first locking cylinder 213, the first locking rear lock 22 includes a first locking drive mechanism 223, a transmission mechanism 224 and a first control module 226, one end of the first locking block 212 extends to connect with the transmission mechanism 224 and cooperates with the lock block in the main lock body 3 to change the movement of the lock hook, the second locking mechanism 4 includes a second locking front lock 41, a second locking rear lock 42 and a second locking mounting plate 43, the second locking front lock 41 includes a clutch The system includes a drive motor 413, a clutch 414, and a clutch output shaft 415 connected to the output end of the clutch 414. The second locking rear lock 42 includes a second locking rear handle 421, a second locking rear cover 422, and a second locking front reset module 423. One end of the clutch output shaft 415 extends to connect with one end of the second locking front reset module 423 and engages with the lock block in the secondary lock body 5 to change the movement of the lock hook. When unlocking, the first locking control module 214 sends an unlocking command to the first control module 226, and the first control module 226 controls the first locking drive mechanism 223 to drive the transmission mechanism 224 to drive the first locking block 212 to unlock the main lock body 3. After unlocking, the first locking control module 214 sends an unlocking command to the clutch drive motor 413 to unlock the clutch 414. Rotating the second locking rear handle 421 can drive the clutch output shaft 415 to rotate to unlock.
[0023] In this embodiment, the first locking front lock 21 and the first locking mounting plate 23 are respectively placed on both sides of the door body 1 and fixedly installed to the door body 1 through the first locking mounting plate 23 and bolts. The first locking mechanism 2 is set corresponding to the main lock body 3, and the second locking mechanism 4 is set corresponding to the auxiliary lock body 5. The main lock body 3 and the auxiliary lock body 5 both adopt the traditional American standard lock body structure, which includes a basic lock cylinder, lock block and lock catch. The lock cylinder controls the lock block to drive the extension and retraction movement of the lock catch. The specific internal structure and operating principle are well known to those skilled in the art. They will not be described in detail here.
[0024] Specifically, in this case, the locking block in the main lock body 3 is driven by the first locking mechanism 2, and the locking block in the secondary lock body 5 is driven by the second locking mechanism 4. Upon receiving an unlocking command, the first locking control module 214 sends an unlocking signal to the first control module 226. The first control module 226 then controls the transmission mechanism 224 to drive the first locking block 212 to rotate, causing the first locking block 212 to drive the locking hook in the main lock body 3 to extend and retract, thus unlocking or locking the main lock body 3. Simultaneously with unlocking the main lock body 3, the first locking control module 214 sends a signal to the clutch drive motor 413 to release the clutch 414. After the clutch 414 is unlocked, the clutch output shaft 415 can be directly driven to rotate via the second locking front handle 411, forming a second unlocking mechanism. This creates the dual-lock linkage mechanism of this application. Compared to ordinary American standard locks or other types of locks, this upper and lower linkage adds a layer of security, resulting in higher overall security. Compared to traditional locks, the double-lock mechanism of this application increases the difficulty of unlocking. This embodiment does not include an additional manual keyhole.
[0025] In this embodiment, the first locking front lock 21 further includes a fingerprint password module 211 and a USB power supply module 215 and a voice broadcast module 216 disposed therein. The fingerprint password module 211 sends a fingerprint or password unlocking key to the first locking control module 214. The voice broadcast module 216 is electrically connected to the first locking control module 214. This application is not limited to the lock body structure. The setting of the fingerprint password module 211 also means that this application is not limited to the way the unlocking command is issued. Specifically, without violating the principles and spirit of this application, the fingerprint password module 211 can also use other unlocking command issuance methods, such as voiceprint command unlocking, pupil command unlocking, etc., and the competitiveness of market products is also considered. The voice broadcast module 216 is set to match the door lock's intelligent system, and provides system operation feedback to the user through the voice broadcast module 216. The door lock intelligent system is a well-known and mature prior art, which will not be described in detail here, and is not limited in this application.
[0026] In this embodiment, the first locking rear lock 22 further includes a communication module 225, a protective cover 227, a battery module 221, and a first locking block knob 222. The communication module 225 is connected to the first locking control module 214 via wired or wireless means. The first locking front lock 21 and the protective cover 227 are detachable and installable. In order to reduce costs, the first locking drive mechanism 223 is connected to the first locking control module 214 via a wired connection. This application is not limited to the signal connection method. Specifically, during the installation process, the USB power supply module 215, the voice broadcast module 216, the first locking control module 214, the first locking lock cylinder 213, the first locking drive mechanism 223, the transmission mechanism 224, the communication module 225, and the first control module 226 are all embedded in the second locking mechanism 4 shown in the figure. Figure 6 The housing shown is encapsulated by a backplate and a protective cover 227 to ensure airtightness, dustproofness, and waterproofness.
[0027] In this embodiment, the output end of the first locking drive mechanism 223 is connected to a gear set (not shown) via a transmission mechanism 224. The type of gear set is selected based on the actual situation; for example, a reduction gear set may be connected to one end of the transmission mechanism 224. The first locking drive mechanism 223 is signal-connected to the first control module 226. When the first control module 226 receives an unlocking command, it controls the first locking drive mechanism 223 to drive the transmission mechanism 224 to rotate via the gear set, thereby driving the first locking block 212 to unlock the main lock body 3.
[0028] In this embodiment, the other end of the transmission mechanism 224 is further connected to the first locking block knob 222. The main lock body 3 relies on the first locking block 212 to open and close. Thus, when indoors, if needed, the first locking block 212 can be directly forceped through the first locking block knob 222 to enable manual unlocking or locking from inside the door.
[0029] Furthermore, the second locking front lock 41 also includes a second locking front handle 411, a second locking front cover 412, and a protective front cover 416. A clutch 414 is installed inside the second locking front cover 412, with one end passing through the cover and connected to the second locking front handle 411. The clutch drive motor 413 is electrically connected to the first locking control module 214. When the first locking control module 214 sends a signal to the clutch drive motor 413 to release the clutch 414 from locking the clutch output shaft 415, the second locking front handle 411 can directly drive the clutch output shaft 415 to rotate, thus unlocking the secondary lock body 5. Specifically, during installation, the clutch drive motor 413, clutch 414, and clutch output shaft 415 are all embedded in the cover. Figure 7The interior of the second locking front cover 412 is sealed by a protective front cover 416 to ensure sealing, dustproof and waterproof performance.
[0030] Furthermore, the second locking rear lock 42 also includes a protective rear plate 424. The second locking front reset module 423 is embedded inside the second locking rear cover 422 and is encapsulated by the protective rear plate 424 and the second locking rear cover 422. The other end of the second locking front reset module 423 passes through the second locking rear cover 422 and is connected to the second locking rear handle 421. Specifically, during installation, the second locking front reset module 423 is embedded in the following... Figure 8 The interior of the second locking rear cover 422 is encapsulated by a protective rear plate 424 to ensure sealing, dustproof and waterproof performance. The second locking front reset module 423 is for facilitating the reset of the second locking front handle 411 and the clutch output shaft 415.
[0031] In this embodiment, considering user safety and economy, a battery module 221 for power supply is further provided on one side of the first locking front lock 21, a second locking cylinder 4111 is provided on the second locking front handle 411, and a sealing cover plate 2131 is snapped onto one side of the first locking cylinder 213. The USB power supply module 215 is electrically connected to the first locking control module 214.
[0032] All structural modules requiring power as shown in this application are powered by battery module 221. Considering the battery module 221's power storage capacity, the USB power module 215 can serve as an emergency power supply and can be used in conjunction with mains power or other power supply facilities such as power banks to meet the power needs of all module components shown in this application. Even in the event of a complete power failure in the lock body, unlocking can still be achieved through the first locking mechanism 2 via an external power source.
[0033] Meanwhile, under normal circumstances, the outer lock hole surface of the first locking cylinder 213 is tightly wrapped and locked by the sealing cover plate 2131, as shown in Figure 1 of the door body, and is not exposed, making it impossible to directly unlock the main lock body 3 through the lock hole, thereby improving user security. However, the probability of internal mechanical structure failure in lock bodies on the market is extremely low. Considering this situation, this application retains the lock hole of the first locking cylinder 213. In the event of a mechanical structure failure in the lock body, the lock hole of the first locking cylinder 213 can be exposed by slight force disassembly using external tools such as blades or screwdrivers, as shown in Figure 3 of the main lock body, allowing a technician to repair the main lock body 3.
[0034] Emergency power supply is a well-known and mature existing technology in the field, and will not be elaborated upon here, nor is it limited in any way in this application. Furthermore, the control logic involved in this application is implemented by those skilled in the art based on the content described in this application, and is an improvement upon existing technology. The fingerprint password module 211, the first locking control module 214, the USB power supply module 215, the voice broadcast module 216, the battery module 221, the first locking drive mechanism 223, the communication module 225, the first control module 226, and the clutch drive motor 413 are all existing products in the field of smart lock technology on the market, and can all be purchased from relevant smart lock manufacturers. Specific customization will be made with the manufacturer based on the actual product size and functional requirements.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A double-lock body synchronous door lock, comprising a door body (1), characterized in that, Also includes: The main lock body (3) and the secondary lock body (5) are placed vertically on the door body (1); A first locking mechanism (2) and a second locking mechanism (4) are respectively provided for the main lock body (3) and the auxiliary lock body (5); wherein, The first locking mechanism (2) includes a first front locking lock (21), a first rear locking lock (22), and a first locking mounting plate (23). The first front locking lock (21) includes a first locking control module (214), a first locking cylinder (213), and a first locking block (212) that cooperates with the first locking cylinder (213). The first rear locking lock (22) includes a first locking drive mechanism (223), a transmission mechanism (224), and a first control module (226). One end of the first locking block (212) extends to connect with the transmission mechanism (224) and cooperates with the locking block in the main lock body (3) to change the movement of the lock hook. The second locking mechanism (4) includes a second front locking lock (41), a second rear locking lock (42), and a second locking mounting plate (43). The second front locking lock (41) includes a clutch drive motor (413), a clutch (414), and a clutch output shaft (415) connected to the output end of the clutch (414). The second rear locking lock (42) includes a second rear locking handle (421), a second rear locking cover (422), and a second front locking reset module (423). One end of the clutch output shaft (415) extends to connect with one end of the second front locking reset module (423) and engages with the lock block in the secondary lock body (5) to change the movement of the lock hook. When unlocking, the first locking control module (214) sends an unlocking command to the first control module (226) and the first control module (226) controls the first locking drive mechanism (223) to drive the transmission mechanism (224) to drive the first locking block (212) to unlock the main lock body (3). After unlocking, the first locking control module (214) sends an unlocking command to the clutch drive motor (413) to the clutch (414). The second locking handle (421) can drive the clutch output shaft (415) to rotate to unlock.
2. The double-lock body synchronous door lock according to claim 1, characterized in that: The first locking front lock (21) and the first locking mounting plate (23) are respectively placed on both sides of the door body (1) and fixedly installed to the door body (1) through the first locking mounting plate (23) and the bolts.
3. A double-lock body synchronous door lock according to claim 1, characterized in that: The first locking front lock (21) also includes a fingerprint password module (211) and a USB power supply module (215) and a voice broadcast module (216) disposed therein. The fingerprint password module (211) sends a fingerprint or password unlocking key to the first locking control module (214). The USB power supply module (215) and the voice broadcast module (216) are electrically connected and signal connected to the first locking control module (214), respectively.
4. A double-lock body synchronous door lock according to claim 1, characterized in that: The first locking rear lock (22) also includes a communication module (225), a protective cover (227), a battery module (221) and a first locking block knob (222). The communication module (225) is connected to the first locking control module (214) via wired or wireless means. The first locking front lock (21) and the protective cover (227) are detachable and installable.
5. A double-lock body synchronous door lock according to claim 1, characterized in that: The output end of the first locking drive mechanism (223) is connected to one end of the transmission mechanism (224) via a gear set, and the first locking drive mechanism (223) is connected to the first control module (226) via a signal.
6. A double-lock body synchronous door lock according to claim 5, characterized in that: The other end of the transmission mechanism (224) is connected to the first locking block knob (222).
7. A double-lock body synchronous door lock according to claim 1, characterized in that: The second locking front lock (41) also includes a second locking front handle (411), a second locking front cover (412) and a protective front cover (416). The clutch (414) is installed inside the second locking front cover (412) and one end of it passes through the second locking front cover (412) and is connected to the second locking front handle (411).
8. A double-lock body synchronous door lock according to claim 1, characterized in that: The second locking rear lock (42) also includes a protective rear plate (424). The second locking front reset module (423) is embedded inside the second locking rear cover (422) and is connected to the second locking rear cover (422) by the protective rear plate (424) to form an encapsulation. The other end of the second locking front reset module (423) passes through the second locking rear cover (422) and is connected to the second locking rear handle (421).
9. A double-lock body synchronous door lock according to any one of claims 1-8, characterized in that: A fingerprint password module (211) for power supply is provided on one side of the first locking front lock (21).
10. A double-lock body synchronous door lock according to claim 9, characterized in that: The second locking handle (411) is provided with a second locking cylinder (4111), and a sealing cover plate (2131) is snapped onto one side of the first locking cylinder (213).
