An electronic lock drive mechanism

Abstract

This utility model relates to a drive mechanism for an electronic lock, including a mounting base, a connecting cover, a drive motor, and a drive component. The connecting cover is connected to the mounting base, and the drive component is rotatably connected to the mounting base. It also includes a first double-drive gear, which is rotatably connected to the mounting base. The output head of the drive motor has a motor output gear, which meshes with the first double-drive gear. The number of teeth on the first double-drive gear is greater than that on the motor output gear. This utility model provides a drive mechanism for an electronic lock with greater output torque.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a drive mechanism for an electronic lock. Background Technology

[0002] Electronic locks are locks that use electronic authentication to replace traditional keys. The core technology is to use a chip to verify identity and then drive the bolt to unlock. Most smart locks used in homes today belong to this category.

[0003] The electronic lock's workflow consists of four steps: First, the unlocking credentials are entered via fingerprint, password, proximity card, or facial recognition. Then, the control board matches the entered information with the pre-stored security database. Once the verification is successful, the control board sends a command to the drive motor or solenoid valve. Finally, the bolt retracts or rotates to complete the unlocking process.

[0004] The output torque of the drive mechanism of existing electronic locks is too small because the lock body itself is not large enough to accommodate a large drive motor. As a result, the output torque is too low, which may cause the lock to become stuck and unable to unlock when encountering door lock structures such as top and bottom pins and kingpin lock bodies. Utility Model Content

[0005] In summary, to overcome the shortcomings of the prior art, this utility model provides a drive mechanism for an electronic lock with greater output torque.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a driving mechanism for an electronic lock, comprising a mounting base, a connecting cover, a drive motor, and a driving component. The connecting cover is connected to the mounting base, and the driving component is rotatably connected to the mounting base. The mechanism further includes a first double-drive gear and a second double-drive gear. The first double-drive gear is rotatably connected to the mounting base. The output head of the drive motor is provided with a motor output gear, which meshes with the first double-drive gear. The number of teeth on the first double-drive gear is greater than that on the motor output gear. The second double-drive gear is rotatably connected to the mounting base. The first double-drive gear is provided with a first conductive small tooth. The number of teeth on both the first and second double-drive gears is greater than that on the first conductive small tooth. The first conductive small tooth meshes with the second double-drive gear. The second double-drive gear drives the driving component to rotate. The module of the second double-drive gear and the first conductive small tooth is 0.2 greater than the module of the motor output gear and the first double-drive gear.

[0007] Furthermore, it also includes a third double-drive gear, which is rotatably connected to the mounting base. The second double-drive gear has a second conductive tooth. The number of teeth of both the second and third double-drive gears is greater than that of the second conductive tooth. The second conductive tooth meshes with the third double-drive gear. The second double-drive gear drives the drive component to rotate by means of the third double-drive gear. The module of the third double-drive gear and the second conductive tooth is 0.2 greater than the module of the second double-drive gear and the first conductive tooth.

[0008] Furthermore, the outer wall of the driving component is provided with driven gear teeth, and the third double transmission gear is provided with a third transmission small tooth. The number of teeth of the third double transmission gear and the driven gear teeth is greater than that of the third transmission small tooth. The third transmission small tooth meshes with the driven gear teeth. The driven gear teeth, the third double transmission gear, the third transmission small tooth, and the second transmission small tooth have the same module.

[0009] Furthermore, the module of the motor output gear and the first double transmission gear is 0.5.

[0010] Furthermore, a raised platform is provided at the position where the mounting base connects to the second double-drive gear.

[0011] Furthermore, the first double-drive gear is provided with vertical teeth arranged in the direction of its axial end face, and the vertical teeth are meshed with the motor output gear.

[0012] The beneficial effects of this application are as follows: When a fingerprint or password-based unlocking signal is received, the drive motor starts, driving the motor output gear at the output head to rotate. This output gear, in turn, drives the first double-drive gear. Because the first double-drive gear has a larger number of teeth, the motor output gear needs to rotate several times to drive the first double-drive gear to rotate once. This increased travel distance reduces the average torque required to open the door. In this way, the first double-drive gear reduces the force on the drive components, allowing the low-power drive motor to drive the high-torque lock, resulting in greater output torque. When the moving gear is driven to rotate by the output gear of the motor, the first transmission pinion drives the second double transmission gear to rotate. Because the second double transmission gear has a larger number of teeth, the first transmission pinion needs to rotate several times to drive the second double transmission gear to rotate once. The movement distance is further increased, and the average torque required to open the door is further reduced. In this way, the second double transmission gear can reduce the force on the drive component a second time, allowing the small-output drive motor to drive the door lock with a large torque requirement, resulting in a larger output torque. Each level of gear adopts a gradient module hierarchical meshing, with the module increasing by 0.2 at each level, without large-span module abrupt changes. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0015] Figure 3 This is a schematic diagram of the installation of each gear in an embodiment of the present invention. Figure 1 .

[0016] Figure 4 This is a schematic diagram of the installation of each gear in an embodiment of the present invention. Figure 2 .

[0017] The labels in the diagram mean: 1. Mounting base, 101. Elevating platform, 2. Connecting cover, 3. Drive motor, 301. Motor output gear, 4. Drive component, 401. Driven gear tooth, 5. First double transmission gear, 501. First transmission pinion, 502. Vertical gear tooth, 6. Second double transmission gear, 601. Second transmission pinion, 7. Third double transmission gear, 701. Third transmission pinion. Detailed Implementation

[0018] This specific embodiment is merely an explanation of the present embodiment and is not intended to limit the present embodiment. After reading this specification, those skilled in the art can make modifications to the present embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present embodiment.

[0019] Referring to the accompanying drawings, this utility model provides the following technical solution: a driving mechanism for an electronic lock, including a mounting base 1, a connecting cover 2, a drive motor 3, and a driving component 4. The connecting cover 2 is connected to the mounting base 1, and the driving component 4 is rotatably connected to the mounting base 1. It also includes a first double-drive gear 5 and a second double-drive gear 6. The first double-drive gear 5 is rotatably connected to the mounting base 1. The output head of the drive motor 3 is provided with a motor output gear 301, which meshes with the first double-drive gear 5. The number of teeth of the first double-drive gear 5 is greater than that of the first double-drive gear 6. The motor output gear 301 and the second double transmission gear 6 are rotatably connected to the mounting base 1. The first double transmission gear 5 is provided with a first transmission tooth 501. The number of teeth of both the first double transmission gear 5 and the second double transmission gear 6 is greater than that of the first transmission tooth 501. The first transmission tooth 501 meshes with the second double transmission gear 6. The second double transmission gear 6 drives the driving component 4 to rotate. The module of the second double transmission gear 6 and the first transmission tooth 501 is 0.2 greater than that of the motor output gear 301 and the first double transmission gear 5.

[0020] With this setup, when a fingerprint or password-based unlocking signal is received, the drive motor 3 starts, driving the motor output gear 301 at the output head to rotate. The motor output gear 301 then drives the first double-drive gear 5 to rotate. Because the first double-drive gear 5 has a large number of teeth, the motor output gear 301 needs to rotate several times to drive the first double-drive gear 5 to rotate once. This increased travel distance reduces the average torque required to open the door. Thus, the first double-drive gear 5 can reduce the force on the drive component 4, allowing the low-output drive motor 3 to drive the high-torque lock, resulting in a greater output torque. When the double-drive gear 5 is driven to rotate by the motor output gear 301, the first transmission pinion 501 drives the second double-drive gear 6 to rotate. Because the second double-drive gear 6 has a larger number of teeth, the first transmission pinion 501 needs to rotate several times to drive the second double-drive gear 6 to rotate once. The movement distance is further increased, and the average torque required to open the door is further reduced. In this way, the second double-drive gear 6 can reduce the force on the drive component 4 a second time, so that the small-output drive motor 3 can drive the door lock with a large torque requirement, and the output torque is greater. The gears at each level adopt gradient module hierarchical meshing, with the module increasing by 0.2 at each level, without large-span module abrupt changes.

[0021] In a preferred embodiment, the device further includes a third double-drive gear 7, which is rotatably connected to the mounting base 1. The second double-drive gear 6 is provided with a second conductive tooth 601. The number of teeth of both the second double-drive gear 6 and the third double-drive gear 7 is greater than that of the second conductive tooth 601. The second conductive tooth 601 meshes with the third double-drive gear 7. The second double-drive gear 6 drives the driving member 4 to rotate by means of the third double-drive gear 7. The module of the third double-drive gear 7 and the second conductive tooth 601 is 0.2 greater than the module of the second double-drive gear 6 and the first conductive tooth 601.

[0022] With this configuration, when the second double-drive gear 6 is driven to rotate by the first transmission pinion 501, the second transmission pinion 601 drives the third double-drive gear 7 to rotate. Because the third double-drive gear 7 has a larger number of teeth, the second transmission pinion 601 needs to rotate several times to drive the third double-drive gear 7 to rotate once. The movement distance is further increased, and the average torque required to open the door is further reduced. In this way, the third double-drive gear 7 can reduce the force on the drive component 4 three times, allowing the small-output drive motor 3 to drive the door lock with a large torque requirement, and outputting more torque.

[0023] In a preferred embodiment, the outer wall of the driving component 4 is provided with a driven gear tooth 401, and the third double transmission gear 7 is provided with a third transmission tooth 701. The number of teeth of the third double transmission gear 7 and the driven gear tooth 401 is greater than that of the third transmission tooth 701. The third transmission tooth 701 meshes with the driven gear tooth 401. The driven gear tooth 401, the third double transmission gear 7, the third transmission tooth 701, and the second transmission tooth 601 have the same module.

[0024] With this configuration, when the third double-drive gear 7 is driven to rotate by the second transmission pinion 601, the third transmission pinion 701 pushes the driven gear 401 to rotate the drive member 4 to unlock. Because the driven gear 401 has a large number of teeth, the third transmission pinion 701 needs to rotate several times to drive the driven gear 401 to rotate once. The movement distance is further increased, and the average torque required to open the door is further reduced. In this way, the third double-drive gear 7 can reduce the force on the drive member 4 four times, allowing the small-output drive motor 3 to drive the door lock with a large torque requirement, and outputting more torque.

[0025] In this preferred embodiment, the module of the motor output gear and the first double-drive gear is 0.5.

[0026] With this configuration, the module of the second double-drive gear 6 and the first transmission pinion 501 is 0.7, and the module of the driven gear 401, the third double-drive gear 7, the third transmission pinion 701, and the second transmission pinion 601 is 0.9. The module difference between each gear is only 0.2, the tooth root section thickness transitions smoothly, the meshing deformation synchronization is good, the tooth root bending stress is reduced by 30%, and the problem of stress concentration and tooth breakage caused by sudden changes in module is completely solved. The four-stage continuous meshing reduction amplifies the output torque. The third transmission pinion 701 and the driven gear 401 form the final stage heavy-duty meshing pair. This meshing pair adopts a height-equal displacement correction gear: the displacement coefficient of the third transmission pinion 701 is x=+0.2, and the displacement coefficient of the driven gear 401 is x=-0.2. All gear tooth roots are uniformly set with a fillet radius R≥0.2mm, the final stage displacement gear has a uniform tooth height of 1.305mm, and the tooth tip thickness of the driving pinion is ≥0.225 times the module.

[0027] In this preferred embodiment, a raised platform 101 is provided at the position where the mounting base 1 connects to the second double transmission gear 6.

[0028] With this setup, the raised platform 101 is used to elevate the gear positioning height, ensuring the coaxiality of each gear level and eliminating meshing off-center load.

[0029] The above settings are not limited; a raised platform 101 can be installed under each gear.

[0030] In a preferred embodiment, the first double-drive gear 5 is provided with a vertical gear tooth 502 arranged in the direction of its axial end face, and the vertical gear tooth 502 is meshed with the motor output gear 301.

[0031] With this configuration, the vertical gear 502 can achieve a steering engagement effect, allowing the drive motor 3 to be installed on the side of the mounting base 1, reducing the overall thickness of the electronic lock and making it easier to install inside the door.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the scope of protection of the present invention.

Claims

1. A drive mechanism for an electronic lock, comprising a mounting base, a connecting cover, a drive motor, and a drive component, wherein the connecting cover is connected to the mounting base, and the drive component is rotatably connected to the mounting base, characterized in that: It also includes a first double-drive gear and a second double-drive gear. The first double-drive gear is rotatably connected to the mounting base. The output head of the drive motor is provided with a motor output gear, which meshes with the first double-drive gear. The number of teeth on the first double-drive gear is greater than that on the motor output gear. The second double-drive gear is rotatably connected to the mounting base. The first double-drive gear is provided with a first conductive pinion. The number of teeth on both the first and second double-drive gears is greater than that on the first conductive pinion. The first conductive pinion meshes with the second double-drive gear. The second double-drive gear drives the drive component to rotate. The module of the second double-drive gear and the first conductive pinion is 0.2 greater than the module of the motor output gear and the first double-drive gear.

2. The driving mechanism of an electronic lock according to claim 1, characterized in that: It also includes a third double-drive gear, which is rotatably connected to the mounting base. The second double-drive gear has a second conductive tooth. The number of teeth of both the second and third double-drive gears is greater than that of the second conductive tooth. The second conductive tooth meshes with the third double-drive gear. The second double-drive gear drives the drive component to rotate by means of the third double-drive gear. The module of the third double-drive gear and the second conductive tooth is 0.2 greater than the module of the second double-drive gear and the first conductive tooth.

3. The driving mechanism of an electronic lock according to claim 2, characterized in that: The outer wall of the driving component is provided with driven gear teeth, and the third double transmission gear is provided with a third transmission small tooth. The number of teeth of the third double transmission gear and the driven gear teeth is greater than that of the third transmission small tooth. The third transmission small tooth meshes with the driven gear teeth. The driven gear teeth, the third double transmission gear, the third transmission small tooth, and the second transmission small tooth have the same module.

4. The driving mechanism of an electronic lock according to claim 1, characterized in that: The module of the motor output gear and the first double transmission gear is 0.

5.

5. The driving mechanism of an electronic lock according to claim 1, characterized in that: A raised platform is provided at the position where the mounting base connects to the second double-drive gear.

6. The driving mechanism of an electronic lock according to claim 1, characterized in that: The first double transmission gear has vertical teeth arranged in the direction of its axial end face, and the vertical teeth are meshed with the motor output gear.

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