A full-automatic electronic lock body gear transmission mechanism of a bidirectional clutch built-in motor
By using a two-way clutch built-in motor fully automatic electronic lock body gear transmission mechanism, the problems of poor transmission performance and safety hazards of existing electronic locks have been solved, achieving high efficiency, low noise, long life and easy maintenance of lock performance, and improving user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HUAYAO ENGINEERING TECHNOLOGY CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-05-29
AI Technical Summary
Existing electronic locks suffer from poor transmission performance, high noise, high friction, short service life, and safety hazards such as inability to manually unlock when the motor is damaged.
It adopts a two-way clutch built-in motor fully automatic electronic lock body gear transmission mechanism, which replaces the lever structure with a gear transmission structure. Combined with a built-in two-way clutch gearbox and multi-stage linkage design, it realizes intelligent switching between motor drive and manual unlocking, ensuring that it can still unlock normally in the event of power failure or motor failure.
It significantly improves transmission efficiency and reliability, reduces noise, extends the service life of locks, enhances emergency functions and security, and improves the user experience.
Smart Images

Figure CN224300598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic lock technology, and in particular to a bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism. Background Technology
[0002] An electronic lock is a type of lock controlled by electronic technology, unlike traditional locks that rely on mechanical keys. It mainly consists of an electronic control unit and a mechanical lock body. The electronic control unit includes circuit boards, chips, and sensors, and can recognize various unlocking signals. Common recognition methods include passwords, card swipes, fingerprints, facial recognition, and mobile apps. After the user issues an unlocking command correctly, the electronic control unit processes and verifies the signal. If verification is successful, it drives the actuator of the lock body's mechanical part to move, such as a motor rotating to retract the bolt, thus unlocking the lock. Electronic locks offer high security, allowing for complex passwords, access control, and recording of unlocking information. They are convenient to use, eliminating the need to carry traditional keys and avoiding the hassle of lost or stolen keys. They can also be integrated with smart home systems for remote control and intelligent management. They are widely used in residential, commercial, hotel, and office buildings.
[0003] Conventional electronic locks use an external motor to drive the lock cylinder, which in turn drives the mechanical lock body to lock and unlock. This transmission primarily relies on a lever mechanism, which not only results in poor locking and unlocking smoothness but also leads to poor transmission performance and high noise levels. Furthermore, the lever mechanism significantly increases friction, affecting lifespan and thus limiting applicability and practicality. Ordinary electronic locks with built-in motors lack a mechanical emergency disengagement function. If the electronic components or motor are damaged and cannot disengage, the lock will remain locked, creating a safety hazard.
[0004] Therefore, those skilled in the art have provided a bidirectional clutch-driven, fully automatic electronic lock body gear transmission mechanism with an integrated motor to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism (beneficial effects, advantages summarized briefly).
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A fully automatic electronic lock body gear transmission mechanism with a built-in motor and a two-way clutch includes a lock body, a core gear set, a slant tongue drive set, a force plate drive set, a deadbolt linkage set, a manual input set, a gearbox set, a guide structure, and a deadbolt linkage mechanism. The lock body is equipped with a drive motor and a two-way clutch gearbox, a lock cylinder and a force plate, and a lock tongue is provided on the force plate.
[0008] The core gear set includes a C-shaped tooth base fixed to the lock body, a rotatable C-shaped tooth mounted on the C-shaped tooth base, a first linkage tooth meshing with the C-shaped tooth, a second linkage double tooth meshing with the first linkage double tooth, and a main gear meshing with the second linkage double tooth.
[0009] The oblique tongue drive assembly includes an oblique tongue paddle that is linked to the main gear. The oblique tongue paddle is fixedly connected to oblique tongue paddle sector teeth, and the oblique tongue paddle sector teeth are engaged with oblique tongue actuating teeth.
[0010] Furthermore, the high-pressure plate drive assembly includes a high-pressure plate paddle fixed to the high-pressure plate, a main gear paddle fixing plate connected to the guide main gear, and a high-pressure plate actuating pin. The high-pressure plate actuating pin is fixed to the main gear and drives the high-pressure plate paddle.
[0011] Furthermore, the upper and lower hook linkage assembly includes an upper hook transmission plate and a lower hook transmission plate, and the upper and lower hook transmission plates are simultaneously meshed with a double gear.
[0012] Furthermore, the manual input group includes a rotatable handle lever located within the lock body, and the handle lever is linked to a tongue guide lever.
[0013] Furthermore, the gearbox assembly includes motor output teeth connected to the drive motor. The motor output teeth are engaged with a first-stage linkage double tooth, which is engaged with a second-stage linkage double tooth. The second-stage linkage double tooth is engaged with a swing tooth, which is engaged with a third-stage linkage double tooth. The third-stage linkage double tooth is engaged with a fourth-stage output double tooth and drives a C-type tooth. The C-type tooth has an incomplete tooth portion for engaging / disengaging with the fourth-stage output double tooth.
[0014] Furthermore, the guide structure includes a main gear guide pin fixed to the lock body and inserted into the main gear guide groove, a main gear return pin that elastically abuts against the main gear, and a slanted tongue actuating pin. The slanted tongue actuating pin is fixedly connected to a transmission plate, and the transmission plate has a transmission pin guide groove. The slanted tongue actuating pin is slidably disposed in the slanted tongue guide groove of the main gear, and the two ends of the slanted tongue guide groove are provided with limiting pits.
[0015] Furthermore, the double gear meshes with the rack portion of the high-strength plate, and the upper and lower hook transmission plates are respectively connected to the upper and lower hook locking tongues.
[0016] This utility model has the following beneficial effects:
[0017] This invention proposes a bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism. This technology replaces the traditional lever structure with a gear transmission structure, significantly reducing mechanical friction and improving transmission efficiency and reliability. The built-in bidirectional clutch gearbox enables intelligent switching between motor drive and manual unlocking, enhancing emergency functionality. The core gear set, through a multi-stage linkage design, ensures smooth and stable power transmission, reducing jamming. The latch drive group and the main bolt drive group employ independent transmission paths, achieving precise control of the latch and main bolt, improving lock security. The deadbolt linkage group utilizes double gears... The synchronous drive system for the upper and lower locking mechanisms simplifies the structure and improves linkage efficiency. The manual input group and the motor drive group do not interfere with each other, ensuring normal unlocking even in the event of power failure or motor malfunction. The gearbox group adopts a five-stage gear transmission, optimizing power output and reducing noise. The overall structure is compact, easy to assemble and maintain, and significantly extends the service life of the lock. The clutch function is achieved through an incomplete tooth design, avoiding motor load during manual unlocking and protecting the motor from damage. This technology is applicable to various electronic locks and has advantages such as high reliability, low noise, long life, and easy maintenance, significantly improving the performance of electronic locks and the user experience. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main body of this utility model;
[0019] Figure 2 This is a schematic diagram of the main gear of this utility model;
[0020] Figure 3 This is a schematic diagram of the fan-shaped teeth of the oblique tongue paddle of this utility model;
[0021] Figure 4 This is a schematic diagram of the main gear paddle fixing plate of this utility model.
[0022] Legend:
[0023] 1. C-shaped tooth base; 2. C-shaped tooth; 3. First linkage tooth; 4. Second linkage double tooth; 5. Main gear; 6. Upper hook transmission plate; 7. Lower hook transmission plate; 8. Double gear; 9. Handle lever support; 10. Four-stage output double output tooth; 11. Slanted tongue guide lever; 12. Motor output tooth; 13. First-stage linkage double tooth; 14. Second-stage linkage double tooth; 15. Third-stage linkage double tooth; 16. Swing tooth; 501. Heavy-duty plate; 502. Slanted tongue lever; 503. Heavy-duty plate lever; 504. Main gear lever fixing plate; 505. Slanted tongue lever tooth; 508. Heavy-duty plate lever pin; 509. Slanted tongue lever fan-shaped tooth; 511. Main gear guide pin; 512. Slanted tongue lever pin; 513. Main gear return pin. Detailed Implementation
[0024] 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.
[0025] Reference Figures 1-4 The present invention provides an embodiment of a bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism, comprising a lock body, a core gear set, a slanted tongue drive set, a high-pressure plate drive set, a deadbolt linkage set, a manual input set, a gearbox set, a guide structure, and a deadbolt linkage mechanism. The lock body is provided with a drive motor and a bidirectional clutch gearbox, and the lock body is provided with a lock cylinder and a high-pressure plate 501, and the high-pressure plate 501 is provided with a lock tongue.
[0026] The core gear set includes a C-shaped tooth base 1 fixed to the lock body, a rotatable C-shaped tooth 2 installed on the C-shaped tooth base 1, a first linkage tooth 3 meshing with the C-shaped tooth 2, a second linkage double tooth 4 meshing with the first linkage tooth 3, and a main gear 5 meshing with the second linkage double tooth 4.
[0027] The slant drive assembly includes a slant paddle 502 that is linked to the main gear 5. The slant paddle 502 is fixedly connected to a slant paddle sector tooth 509, and the slant paddle sector tooth 509 is engaged with a slant paddle actuating tooth 505.
[0028] The high-pressure plate drive assembly includes a high-pressure plate paddle 503 fixed to the high-pressure plate 501, a main gear paddle fixing plate 504 connected to the guide main gear 5, and a high-pressure plate actuating pin 508. The high-pressure plate actuating pin 508 is fixed to the main gear 5 and drives the high-pressure plate paddle 503.
[0029] The upper and lower hook linkage assembly includes an upper hook transmission plate 6 and a lower hook transmission plate 7, which are simultaneously meshed with a double gear 8.
[0030] The manual input group includes a rotatable handle lever 9 located inside the lock body, and the handle lever 9 is linked to a tongue guide lever 11.
[0031] The gearbox assembly includes a motor output tooth 12 connected to the drive motor. The motor output tooth 12 is engaged with a first-stage linkage double tooth 13. The first-stage linkage double tooth 13 is engaged with a second-stage linkage double tooth 14. The second-stage linkage double tooth 14 is engaged with a swing tooth 16. The swing tooth 16 is engaged with a third-stage linkage double tooth 15. The third-stage linkage double tooth 15 is engaged with a fourth-stage output double tooth 10 and drives a C-type tooth 2. The C-type tooth 2 has incomplete teeth and is used to engage / disengage with the fourth-stage output double tooth 10.
[0032] The guiding structure includes a main gear guide pin 511 fixed to the lock body and inserted into the guide groove of the main gear 5, a main gear return pin 513 elastically abutting the main gear 5, and a tongue-operated pin 512. The tongue-operated pin 512 is fixedly connected to a transmission plate, and the transmission plate has a transmission pin guide groove. The tongue-operated pin 512 is slidably disposed in the tongue-operated guide groove of the main gear 5, and the two ends of the tongue-operated guide groove are provided with limiting pits.
[0033] The double gear 8 meshes with the rack of the heavy-duty plate 501, and the upper and lower hook transmission plates 6 and 7 are respectively connected to the upper and lower hook locking tongues.
[0034] Specifically, this practical solution is a built-in dual-clutch motor gear transmission mechanism for electronic locks, including a lock body, a drive motor and a two-way clutch gearbox mounted on the lock body, a lock cylinder and a bolt plate 501 mounted on the lock body, a bolt plate 501 with a lock tongue, and a gear transmission structure within the lock body. The gear transmission structure includes a C-shaped tooth base 1, C-shaped teeth 2, a first linkage tooth 3, a second linkage double tooth 4, a main gear 5, a bolt plate 501, a bolt lever 502, a bolt lever 503, a main gear lever fixing plate 504, a bolt lever actuating tooth 505, and a bolt lever... The lock body includes a fan-shaped tooth 509, a large-plate actuating pin 508, a slanted tongue actuating pin 512, a main gear guide pin 511, a main gear return pin 513, an upper hook transmission plate 6 and a lower hook transmission plate 7 linked double gear 8, a handle lever support 9, a slanted tongue guide actuating plate 11, a first-stage linked double gear 13, a second-stage linked double gear 14, a swing tooth 16, a third-stage linked double gear 15, a fourth-stage output double output tooth 10, and a first-stage linked tooth 3 and a second-stage linked double gear 4. The first-stage linked tooth 3 and C-type tooth 2 mesh with each other. The transmission plate is provided with a transmission pin guide groove, and a transmission pin is fixed on the transmission lever. The lock body is also provided with a handle lever support, a handle actuating tooth, a slanted tongue actuating plate, a slanted tongue, a slanted tongue shaft, and a slanted tongue shaft linkage plate. The slanted tongue is riveted to the slanted tongue shaft. The latching shaft linkage plate is also fixed together with the latching shaft. The handle actuating teeth and the latching actuating plate are installed on the handle lever and linked with the handle lever. The handle actuating teeth mesh with the transmission paddle. The transmission plate is provided with a transmission pin guide groove. A transmission pin is fixed on the transmission paddle and is located in the transmission pin guide groove. The main gear 5 is fixed with a latching actuating pin 512 and has a latching guide groove. When the main gear 5 rotates, it drives the transmission paddle and the latching actuating plate to move, causing the transmission pin to move in the transmission plate guide groove and driving the latching actuating plate to rotate the handle lever. This drives the transmission plate to move and the latching actuating plate to rotate. The transmission plate drives the force plate 501 to move, thereby realizing the locking tongue and the latching tongue action.
[0035] Clutch action logic:
[0036] When driven by the motor: the four-stage output double output tooth 17 pushes the complete tooth of the C-type tooth 2;
[0037] When manually unlocking: the lock cylinder rotates the C-shaped tooth 2, and its incomplete tooth part avoids the four-level output double output tooth 10.
[0038] Working principle:
[0039] Locking function: The main gear 5 is connected to the transmission paddle, the transmission paddle is riveted to the transmission pin, and the transmission plate is riveted to the heavy plate 501. The transmission plate has a transmission pin guide groove. When locking, the lock cylinder moves the C-type tooth 2 to rotate counterclockwise or the motor drives the gearbox output double teeth to rotate clockwise. The C-type tooth 2 or the gearbox output teeth drive the main gear 5 to rotate clockwise. Through the clockwise swing of the transmission pin in the guide groove of the transmission plate, the transmission plate drives the heavy plate 501, and the heavy plate 501 drives the lock tongue to realize the locking function.
[0040] Unlocking function: The execution principle is the same as above. When unlocking, the lock cylinder drives the C-type tooth 2 to rotate clockwise or the motor drives the gearbox output tooth to rotate counterclockwise. The C-type tooth 2 or the gearbox output tooth drives the main gear 5 to rotate counterclockwise. Through the counterclockwise swing of the transmission pin in the guide groove of the transmission plate, the transmission plate drives the heavy plate 501, and the heavy plate 501 drives the lock tongue to realize the unlocking function.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bidirectional clutch-driven, fully automatic electronic lock body gear transmission mechanism with an internal motor, comprising a lock body, a core gear set, a slant tongue drive set, a high-pressure plate drive set, a deadbolt linkage set, a manual input set, a gearbox set, a guide structure, and a deadbolt linkage mechanism, characterized in that: The lock body is provided with a drive motor and a two-way clutch gearbox, the lock body is provided with a lock cylinder and a high-pressure plate (501), and the high-pressure plate (501) is provided with a lock tongue; The core gear set includes a C-shaped tooth base (1) fixed to the lock body, a rotatable C-shaped tooth (2) installed on the C-shaped tooth base (1), the C-shaped tooth (2) meshing with a first linkage tooth (3), the first linkage tooth (3) meshing with a second linkage double tooth (4), and the second linkage double tooth (4) meshing with a main gear (5). The oblique tongue drive assembly includes an oblique tongue paddle (502) that is linked to the main gear (5). The oblique tongue paddle (502) is fixedly connected with oblique tongue paddle fan teeth (509), and the oblique tongue paddle fan teeth (509) are engaged with oblique tongue paddle teeth (505).
2. The bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism according to claim 1, characterized in that: The high-pressure plate drive assembly includes a high-pressure plate paddle (503) fixed to the high-pressure plate (501), a main gear paddle fixing plate (504) connected to the guide main gear (5), and a high-pressure plate actuating pin (508). The high-pressure plate actuating pin (508) is fixed to the main gear (5) and drives the high-pressure plate paddle (503).
3. The bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism according to claim 1, characterized in that: The upper and lower hook linkage assembly includes an upper hook transmission plate (6) and a lower hook transmission plate (7), and the upper hook transmission plate (6) and the lower hook transmission plate (7) are simultaneously meshed with a double gear (8).
4. The bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism according to claim 1, characterized in that: The manual input group includes a rotatable handle lever (9) located in the lock body, and the handle lever (9) is linked to a tongue guide lever (11).
5. The bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism according to claim 1, characterized in that: The gearbox assembly includes a motor output tooth (12) connected to a drive motor. The motor output tooth (12) is engaged with a first-level linkage double tooth (13). The first-level linkage double tooth (13) is engaged with a second-level linkage double tooth (14). The second-level linkage double tooth (14) is engaged with a swing tooth (16). The swing tooth (16) is engaged with a third-level linkage double tooth (15). The third-level linkage double tooth (15) is engaged with a fourth-level output double tooth (10) and drives a C-type tooth (2). The C-type tooth (2) has incomplete teeth for engaging / disengaging with the fourth-level output double tooth (10).
6. The bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism according to claim 1, characterized in that: The guiding structure includes a main gear guide pin (511) fixed to the lock body and inserted into the guide groove of the main gear (5), a main gear return pin (513) elastically abutting the main gear (5), and a tongue-operated pin (512). The tongue-operated pin (512) is fixedly connected to a transmission plate. The transmission plate has a transmission pin guide groove. The tongue-operated pin (512) is slidably disposed in the tongue-operated guide groove of the main gear (5). Limiting pits are provided at both ends of the tongue-operated guide groove.
7. The bidirectional clutch built-in motor fully automatic electronic lock body gear transmission mechanism according to claim 3, characterized in that: The double gear (8) meshes with the rack of the heavy plate (501), and the upper hook transmission plate (6) and the lower hook transmission plate (7) are respectively connected to the upper and lower hook locking tongues.