Speed reduction motor suitable for intelligent lock
By setting a magnet on the output gear and using a sensing module for positioning, the problem of the output gear's inability to be positioned and detected in smart locks is solved, achieving precise positioning and improved output torque.
Patent Information
- Application Number
- CN202520121170.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In existing technologies, the output gear of a geared motor cannot be positioned or the number of rotations can be detected, which cannot meet the requirements of smart locks.
A magnet is placed on the output gear, and the position of the magnet is sensed by a sensing module to accurately position the output gear. This, combined with multi-stage gear transmission, increases the output torque.
It achieves precise positioning and rotation count detection of the output gear, meeting the requirements of smart locks, while also increasing the output torque of the output gear.
Smart Images
Figure CN223872150U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart lock technology, and in particular to a geared motor suitable for smart locks. Background Technology
[0002] Gear reducers typically reduce the speed of a motor, internal combustion engine, or other high-speed power source by using a small gear on the input shaft of a gear reducer (or gearbox). By employing a multi-stage structure, the rotational speed can be significantly reduced, thereby increasing the output torque of the geared motor. Its core function of "power amplification and speed reduction" is achieved through the use of multiple stages of gear transmission to reduce speed; the reducer itself is composed of various gear pairs.
[0003] Smart locks typically include components such as a geared motor, a lock body, and a bolt. The end of the geared motor is usually connected to the bolt control mechanism via an output gear or output shaft, thereby transmitting the output torque to the bolt control mechanism to control the movement of the bolt and realize the opening and closing of the lock. However, in the existing technology, the output gear of the geared motor cannot be positioned or its rotation count can be detected, which cannot meet the requirements of smart locks. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a geared motor suitable for smart locks, so as to solve the technical problem that the output gear cannot be positioned and detected in the prior art.
[0005] This utility model is achieved by the following technical solution: a geared motor suitable for smart locks, comprising a housing, a drive motor, a transmission assembly, and an output assembly;
[0006] The drive motor is mounted on the housing, and the drive end of the drive motor is provided with an input gear;
[0007] The transmission assembly is disposed within the housing. The transmission assembly includes a first-stage gear, a second-stage gear, a third-stage gear, a fourth-stage gear, a fifth-stage gear, and a sixth-stage gear connected in sequence. The input gear meshes with the first-stage gear, and the sixth-stage gear is provided with an output shaft.
[0008] The output component includes an output gear and a magnet. The output gear is connected to the output shaft, and the magnet is disposed at the upper end of the output gear.
[0009] In one possible implementation, the output gear is provided with a first limiting groove, and the magnet is disposed in the first limiting groove.
[0010] In one possible implementation, a clutch assembly is further included, comprising a rotating member and two clutch gears. The rotating member is rotatably disposed relative to the housing, and the two clutch gears are respectively rotatably disposed at both ends of the rotating member. The clutch gears mesh with the secondary gear. When the drive motor rotates forward, one of the clutch gears meshes with the tertiary gear. When the drive motor rotates in reverse, the rotating member rotates to make the other clutch gear mesh with the tertiary gear.
[0011] In one possible implementation, the rotating component is provided with a clutch shaft, the clutch gear is rotatably sleeved on the clutch shaft, the end of the clutch shaft is provided with a limiting protrusion, the clutch gear is provided with a second limiting groove, and the limiting protrusion is located in the second limiting groove.
[0012] In one possible implementation, a spring is fitted onto the clutch shaft, one end of the spring abutting against the rotating member, and the other end of the spring abutting against the clutch gear.
[0013] In one possible implementation, two limiting parts are provided at intervals inside the housing, and the two limiting parts correspond to the two ends of the rotating member respectively. When the clutch gear on one end of the rotating member meshes with the third gear, the other end of the rotating member abuts against the limiting part.
[0014] In one possible implementation, the housing is further provided with a first axle, a second axle, a third axle, and a fourth axle. The first-stage gear is rotatably mounted on the first axle, the second-stage gear is rotatably mounted on the second axle, the third-stage gear and the fifth-stage gear are rotatably mounted on the third axle, and the fourth-stage gear and the sixth-stage gear are rotatably mounted on the fourth axle.
[0015] In one possible implementation, the inner wall of the housing is provided with a first limiting post, a second limiting post, a third limiting post and a fourth limiting post, the end of the first wheel axle extends into the first limiting post, the end of the second wheel axle extends into the second limiting post, the end of the third wheel axle extends into the third limiting post, and the end of the fourth wheel axle extends into the fourth limiting post.
[0016] In one possible implementation, the inner wall of the housing is provided with reinforcing ribs, which connect the first limiting post, the second limiting post, the third limiting post and the fourth limiting post.
[0017] In one possible implementation, a connecting portion is provided on the outer wall of the housing.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a magnet on the output gear, the sensing module inside the smart lock can sense it, thereby accurately locating the position of the output gear and calculating the number of rotations of the output gear, which meets the needs of the smart lock. Furthermore, the multi-stage gear transmission of the transmission component greatly improves the output torque of the output gear. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the geared motor of this utility model applicable to smart locks;
[0020] Figure 2 This is an exploded view of the geared motor of the present invention, applicable to smart locks;
[0021] Figure 3 This is a schematic diagram of the structure of the geared motor of the present invention after the housing is hidden.
[0022] Figure 4 This is an exploded view of the clutch assembly in the geared motor of the present invention, applicable to smart locks;
[0023] Figure 5 This is an exploded view of the output component in the geared motor of the present invention, applicable to smart locks;
[0024] Figure 6 This is an exploded view of the transmission component in the geared motor of the present invention, applicable to smart locks;
[0025] Figure 7 This is a schematic diagram of the upper housing of the geared motor applicable to smart locks according to this utility model.
[0026] In the picture:
[0027] 1. Shell; 11. Mounting part; 12. Limiting part; 13. First limiting post; 14. Second limiting post; 15. Third limiting post; 16. Fourth limiting post; 17. Reinforcing rib; 18. Upper shell; 181. Connecting part; 19. Lower shell;
[0028] 2. Drive motor; 21. Input gear;
[0029] 3. Transmission components; 31. First-stage gear; 32. Second-stage gear; 33. Third-stage gear; 34. Fourth-stage gear; 35. Fifth-stage gear; 36. Sixth-stage gear; 361. Output shaft; 362. Retaining ring; 363. Copper bushing; 37. First gear shaft; 38. Second gear shaft; 39. Third gear shaft; 40. Fourth gear shaft;
[0030] 4. Output component; 41. Output gear; 411. First limiting groove; 42. Magnet;
[0031] 5. Clutch assembly; 51. Rotating component; 52. Clutch gear; 521. Second limiting groove; 53. Clutch shaft; 531. Limiting protrusion; 54. Spring. Detailed Implementation
[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0034] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0035] like Figure 1-7The diagram shows a geared motor suitable for smart locks, comprising a housing 1, a drive motor 2, a transmission assembly 3, and an output assembly 4. The drive motor 2 is mounted on the housing 1, and its drive end has an input gear 21. The transmission assembly 3 is located inside the housing 1 and includes a first-stage gear 31, a second-stage gear 32, a third-stage gear 33, a fourth-stage gear 34, a fifth-stage gear 35, and a sixth-stage gear 36 that mesh sequentially. The input gear 21 meshes with the first-stage gear 31, and the sixth-stage gear 36 has an output shaft 361. The output assembly 4 includes an output gear 41 and a magnet 42. The output gear 41 is connected to the output shaft 361, and the magnet 42 is located at the upper end of the output gear 41. It should be noted that the smart lock contains a PCB board located above the output gear 41. The PCB board has a sensing module for sensing the magnet 42. The sensing module can calculate the number of rotations of the output gear 41 based on the number of times it couples with the magnet 42. Furthermore, when installing the reduction motor, it can be positioned according to the magnet 42 to ensure the output gear 41 is installed in the correct position on the smart lock. Additionally, the drive motor 2 is fixedly mounted on the outside of the housing 1 using fastening bolts. One end of the housing 1 has a mounting part 11, and the drive motor 2 is vertically mounted on the mounting part 11. The drive end of the drive motor 2 extends into the housing 1, and the end of the output shaft 361 has a retaining ring 362. Magnet 362 is positioned above the output gear 41 to limit the output gear 41 and prevent it from slipping out of the output shaft 361. There are two magnets 42, which are symmetrically arranged to improve the positioning accuracy of the smart lock for the output gear 41. The upper part of the housing 1 has a through hole for the output shaft 361 to extend out. A copper sleeve 363 is also fitted on the output shaft 361. The copper sleeve 363 abuts against the inner wall of the through hole. The copper sleeve 363 can support the output shaft 361 and prevent the output shaft 361 from directly contacting the housing 1 to reduce friction. It can also seal the gap between the output shaft 361 and the housing 1, which helps to improve the sealing performance of the housing 1.
[0036] The beneficial effects of this utility model are as follows: by setting a magnet 42 on the output gear 41, the sensing module inside the smart lock can sense it, thereby accurately locating the position of the output gear 41 and calculating the number of rotations of the output gear 41, which meets the needs of the smart lock. Furthermore, the multi-stage gear transmission of the transmission component 3 greatly improves the output torque of the output gear 41.
[0037] Please refer to Figure 5In one possible implementation, the output gear 41 is provided with a first limiting groove 411, and the magnet 42 is disposed within the first limiting groove 411. It should be noted that there are also two first limiting grooves 411, and the two magnets 42 are respectively disposed within the two first limiting grooves 411. The depth of the limiting groove is greater than or equal to the height of the magnet 42, so that the magnet 42 is completely contained within the limiting groove, preventing the magnet 42 from protruding from the upper surface of the output gear 41, which helps to improve the stability of the magnet 42.
[0038] Please refer to Figure 3 and Figure 4 In one possible implementation, the system further includes a clutch assembly 5, which includes a rotating member 51 and two clutch gears 52. The rotating member 51 is rotatably disposed relative to the housing 1, and the two clutch gears 52 are respectively rotatably disposed at both ends of the rotating member 51. The clutch gears 52 mesh with the secondary gear 32. When the drive motor 2 rotates forward, one of the clutch gears 52 meshes with the tertiary gear 33. When the drive motor 2 rotates in reverse, the rotating member 51 rotates so that the other clutch gear 52 meshes with the tertiary gear 33. It should be noted that the rotating component 51 is coaxially arranged with the secondary gear 32, and both clutch gears 52 mesh with the secondary gear 32 simultaneously. The clutch assembly 5 allows the transmission assembly 3 to disconnect and then reconnect when the drive motor 2 changes its rotation direction, which helps improve the stability of the reduction motor when the drive motor 2 changes its rotation direction, and can improve the service life of the reduction motor, thereby improving the service life of the smart lock. Specifically, when the drive motor 2 changes from forward to reverse, the secondary gear 32 also rotates in the opposite direction under the drive of the primary gear 31, and the clutch gear 52 also rotates in the opposite direction under the drive of the secondary gear 32. The rotating component 51 rotates in the opposite direction under the drive of the clutch gear 52, and the rotating component 51 will cause one of its clutch gears 52 to separate from the tertiary gear 33, and the other clutch gear 52 will approach the tertiary gear 33 and then mesh with the tertiary gear 33. Then, through the transmission of the fourth gear 34, the fifth gear 35 and the sixth gear 36, the output gear 41 is finally driven to reverse.
[0039] Please refer to Figure 4 In one possible implementation, the rotating member 51 is provided with a clutch shaft 53, and a clutch gear 52 is rotatably sleeved on the clutch shaft 53. The end of the clutch shaft 53 is provided with a limiting protrusion 531, and the clutch gear 52 is provided with a second limiting groove 521. The limiting protrusion 531 is located within the second limiting groove 521. It should be noted that the cooperation between the limiting protrusion 531 and the second limiting groove 521 can restrict the clutch gear 52, preventing it from slipping off the clutch shaft 53.
[0040] Please refer to Figure 4In one possible implementation, a spring 54 is sleeved on the clutch shaft 53. One end of the spring 54 abuts against the rotating member 51, and the other end of the spring 54 abuts against the clutch gear 52. It should be noted that the spring 54 can provide elastic support for the clutch gear 52, preventing the clutch gear 52 from accidentally sliding on the clutch shaft 53, which helps to improve the overall structural stability of the clutch assembly 5.
[0041] Please refer to Figure 7 In one possible implementation, two limiting parts 12 are spaced apart inside the housing 1. The two limiting parts 12 correspond to the two ends of the rotating member 51, respectively. When the clutch gear 52 on one end of the rotating member 51 meshes with the third-stage gear 33, the other end of the rotating member 51 abuts against the limiting part 12. It should be noted that the limiting part 12 can limit the rotating member 51, so that the rotating member 51 can only rotate within a certain range, which is beneficial to improving the rotation accuracy of the rotating member 51, thereby improving the transmission accuracy of the clutch gear 52 and the third-stage gear 33. In addition, the side wall surface of the limiting part 12 has an arc surface, which can be adapted and fitted to the arc surface at the end of the rotating member 51.
[0042] Please refer to Figure 3 and Figure 6 In one possible implementation, the housing 1 is further provided with a first gear shaft 37, a second gear shaft 38, a third gear shaft 39 and a fourth gear shaft 40. The first-stage gear 31 is rotatably mounted on the first gear shaft 37, the second-stage gear 32 is rotatably mounted on the second gear shaft 38, the third-stage gear 33 and the fifth-stage gear 35 are rotatably mounted on the third gear shaft 39, and the fourth-stage gear 34 and the sixth-stage gear 36 are rotatably mounted on the fourth gear shaft 40. It should be noted that the first gear shaft 37 provides a mounting base for the first-stage gear 31, the second gear shaft 38 provides a mounting base for the second-stage gear 32 and the clutch assembly 5, the third gear shaft 39 provides a mounting base for the third-stage gear 33 and the fifth-stage gear 35, and the fourth gear shaft 40 provides a mounting base for the fourth-stage gear 34 and the sixth-stage gear 36. This allows the first-stage gear 31, second-stage gear 32, third-stage gear 33, fourth-stage gear 34, fifth-stage gear 35, and sixth-stage gear 36 to be positioned and installed in their corresponding positions within the housing 1, which helps improve the transmission accuracy of the transmission assembly 3. Specifically, the clutch assembly 5 is positioned directly above the second-stage gear 32, the fifth-stage gear 35 is positioned directly above the third-stage gear 33, and the sixth-stage gear 36 is positioned directly above the fourth-stage gear 34. This design improves the space utilization within the housing 1, allowing for more gear transmissions to be installed within a limited space, thereby increasing the output torque of the geared motor.
[0043] Please refer to Figure 2 and Figure 7In one possible implementation, the inner wall of the housing 1 is provided with a first limiting post 13, a second limiting post 14, a third limiting post 15 and a fourth limiting post 16. The end of the first wheel axle 37 extends into the first limiting post 13, the end of the second wheel axle 38 extends into the second limiting post 14, the end of the third wheel axle 39 extends into the third limiting post 15, and the end of the fourth wheel axle 40 extends into the fourth limiting post 16. It should be noted that the housing 1 includes an upper housing 18 and a lower housing 19, which are fixedly connected by bolts. The inner walls of both the upper and lower housings 18 and 19 are provided with a first limiting post 13, a second limiting post 14, and a third limiting post 15, which correspond to each other. The lower housing 19 is also provided with an additional fourth limiting post 16. Each of the first, second, third, and fourth limiting posts 13, 14, 15, and 16 has a blind hole. The two ends of the first axle 37, second axle 38, and third axle 39 extend into the blind holes of the upper and lower housings 18 and 19, respectively. The lower end of the fourth axle 40 extends into the blind hole of the fourth limiting post 16. The upper end of the four-wheel axle 40 extends into the six-stage gear 36 and into the output shaft 361. The output shaft 361 and the six-stage gear 36 are an integral structure. The setting of the first limiting post 13, the second limiting post 14, the third limiting post 15 and the fourth limiting post 16 can enable the first wheel axle 37, the second wheel axle 38, the third wheel axle 39 and the fourth wheel axle 40 to be accurately positioned and installed. In addition, the first limiting post 13, the second limiting post 14, the third limiting post 15 and the fourth limiting post 16 can also limit the upper and lower positions of the transmission gear to avoid accidental sliding of the transmission gear in the vertical direction, which is beneficial to improving the stability of the transmission component 3.
[0044] Please refer to Figure 2 In one possible implementation, the inner wall of the shell 1 is provided with reinforcing ribs 17, which connect the first limiting post 13, the second limiting post 14, the third limiting post 15, and the fourth limiting post 16. It should be noted that the inner walls of both the upper shell 18 and the lower shell 19 are provided with reinforcing ribs 17. These reinforcing ribs 17 connect the first limiting post 13, the second limiting post 14, the third limiting post 15, and the fourth limiting post 16 to each other, and simultaneously connect to the side wall of the shell 1, thereby improving the structural strength of the shell 1.
[0045] Please refer to Figure 1 In one possible implementation, a connecting portion 181 is provided on the outer side wall of the housing 1. It should be noted that the connecting portion 181 is used to fix the housing 1 so that the housing 1 is installed inside the smart lock. There are five connecting portions 181, which helps to improve the stability of fixing the housing 1. The connecting portion 181 is provided with a through hole, and the housing 1 can be fixed by using a fastening screw through the through hole.
[0046] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A geared motor suitable for smart locks, characterized in that, Includes housing, drive motor, transmission components, and output components; The drive motor is mounted on the housing, and the drive end of the drive motor is provided with an input gear; The transmission assembly is disposed within the housing. The transmission assembly includes a first-stage gear, a second-stage gear, a third-stage gear, a fourth-stage gear, a fifth-stage gear, and a sixth-stage gear connected in sequence. The input gear meshes with the first-stage gear, and the sixth-stage gear is provided with an output shaft. The output component includes an output gear and a magnet. The output gear is connected to the output shaft, and the magnet is disposed at the upper end of the output gear.
2. The geared motor suitable for smart locks as described in claim 1, characterized in that, The output gear is provided with a first limiting groove, and the magnet is disposed in the first limiting groove.
3. The geared motor suitable for smart locks as described in claim 1, characterized in that, It also includes a clutch assembly, which includes a rotating member and two clutch gears. The rotating member is rotatably disposed relative to the housing, and the two clutch gears are respectively rotatably disposed at both ends of the rotating member. The clutch gears mesh with the secondary gear. When the drive motor rotates forward, one of the clutch gears meshes with the tertiary gear. When the drive motor rotates in reverse, the rotating member rotates so that the other clutch gear meshes with the tertiary gear.
4. The geared motor suitable for smart locks as described in claim 3, characterized in that, The rotating component is provided with a clutch shaft, and the clutch gear is rotatably sleeved on the clutch shaft. The end of the clutch shaft is provided with a limiting protrusion, and the clutch gear is provided with a second limiting groove. The limiting protrusion is located in the second limiting groove.
5. The geared motor suitable for smart locks as described in claim 4, characterized in that, A spring is fitted on the clutch shaft, with one end of the spring abutting against the rotating component and the other end of the spring abutting against the clutch gear.
6. The geared motor suitable for smart locks as described in claim 3, characterized in that, Two limiting parts are provided at intervals inside the housing. The two limiting parts correspond to the two ends of the rotating member, respectively. When the clutch gear on one end of the rotating member meshes with the third gear, the other end of the rotating member abuts against the limiting part.
7. The geared motor suitable for smart locks as described in claim 1, characterized in that, The housing is further provided with a first axle, a second axle, a third axle and a fourth axle. The first-stage gear is rotatably mounted on the first axle, the second-stage gear is rotatably mounted on the second axle, the third-stage gear and the fifth-stage gear are rotatably mounted on the third axle, and the fourth-stage gear and the sixth-stage gear are rotatably mounted on the fourth axle.
8. The geared motor suitable for smart locks as described in claim 7, characterized in that, The inner wall of the housing is provided with a first limiting post, a second limiting post, a third limiting post and a fourth limiting post. The end of the first wheel axle extends into the first limiting post, the end of the second wheel axle extends into the second limiting post, the end of the third wheel axle extends into the third limiting post, and the end of the fourth wheel axle extends into the fourth limiting post.
9. The geared motor suitable for smart locks as described in claim 8, characterized in that, The inner wall of the housing is provided with reinforcing ribs, which connect the first limiting post, the second limiting post, the third limiting post and the fourth limiting post.
10. The geared motor suitable for smart locks as described in claim 1, characterized in that, The outer wall of the housing is provided with a connecting part.