Full-automatic deceleration motor for broken bridge aluminum intelligent lock

Abstract

The application discloses a full-automatic reduction motor for a broken bridge aluminum intelligent lock, which comprises an upper gear box shell and a lower gear box shell, a transmission gear assembly and a driving motor assembly are arranged between the upper gear box shell and the lower gear box shell, and an upper lock core perforation and a lower lock core perforation are arranged on the upper gear box shell and the lower gear box shell respectively, characterized in that a split type lock core assembly which is in transmission connection with the transmission gear assembly is arranged between the upper lock core perforation and the lower lock core perforation. In view of the problem that the lock core and the driving gear are integrated with high degree, the structure is complex, and the production and processing cost is high in the prior art, the split type lock core assembly is adopted, complex integrated parts are split into independent parts with simpler structure, the processing difficulty of the split parts is significantly reduced, the complex mold and high-precision integrated processing technology are not needed, the processing error is reduced, the mold development cost and raw material loss are reduced, the production efficiency is improved, and the overall manufacturing cost is finally reduced.

Description

Technical Field

[0001] This utility model relates to the field of smart lock technology, and in particular to a fully automatic geared motor for a thermally broken aluminum smart lock. Background Technology

[0002] Door locks are devices that serve as insurance and security devices. With the development of science and technology and people's increasing emphasis on home security, smart door locks are becoming increasingly popular due to their greater intelligence in user identification, security, and management.

[0003] Existing fully automatic geared motor structures for thermally broken aluminum smart locks have already been optimized, controlling the overall size to a smaller range. For example, Chinese utility model patent No. 202220769293.X discloses a reduction gearbox for locks, which includes: a gearbox housing, a lock cylinder installed in the gearbox housing, a drive gear driven by the lock cylinder, a transmission gear assembly driven by the drive gear, and a drive motor assembly that drives the transmission gear assembly to rotate. The transmission gear assembly includes: a first transmission gear driven by the drive gear, a second transmission gear driven by the first transmission gear, and a bevel-shaped transmission gear driven by the second transmission gear. Its advantages are: by changing the output direction of the drive motor assembly through the bevel-shaped transmission gear, and by increasing the torque through the interaction of the first transmission gear, the second transmission gear, and the bevel-shaped transmission gear, the motor speed is reduced, simplifying the internal structure of the reduction mechanism, making it suitable for smart locks, and further improving the user experience.

[0004] In actual manufacturing, it is found that the lock cylinder and drive gear are highly integrated, requiring CNC machine tools for simultaneous machining of complex internal cavities and tooth profiles. This results in long processing times for individual parts, and the accumulated dimensional tolerances of the integrated structure lead to a low finished product yield. Furthermore, if a part of the integrated component experiences localized wear (such as a chipped tooth on the gear ring), the entire component must be replaced, resulting in high maintenance costs. Therefore, improvements are necessary. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art.

[0006] This application provides a fully automatic geared motor for a thermally broken aluminum smart lock, including an upper gearbox housing and a lower gearbox housing. A transmission gear assembly and a drive motor assembly are installed between the upper gearbox housing and the lower gearbox housing. An upper lock cylinder through hole and a lower lock cylinder through hole are respectively provided on the upper gearbox housing and the lower gearbox housing. The key feature is that a split lock cylinder assembly that is connected to the transmission gear assembly is provided between the upper lock cylinder through hole and the lower lock cylinder through hole.

[0007] Preferably, the split-type lock cylinder assembly includes a drive gear ring and a rotor with a square hole. The outer diameter of the front section of the rotor is larger than the outer diameter of the rear section, and two second abutting protrusions are provided on the outer wall of the front section. The rear section of the rotor extends through the upper lock cylinder through hole. Two first abutting protrusions are provided on the inner wall of the rear side of the drive gear ring. External teeth are provided circumferentially on the outer wall of the front side of the drive gear ring. The outer diameter of the outer wall of the rear side of the drive gear ring is set to be smaller than the outer diameter of the external teeth to form a first step. The inner diameter of the front hole wall of the upper lock cylinder through hole is set to be larger than the rear hole wall. The inner diameter of the wall forms a mating step, and a front washer and a rear washer are respectively provided at the mating step. When installing the drive gear ring, the rear washer is first installed on the second step of the mating step to the rear part of the upper lock cylinder through hole, while the front washer is installed on the first step to the second step of the mating step. Then the drive gear ring is placed on the front washer and the rear washer. The front washer mates with the mating step to support the rotation of the drive gear ring, and the rear washer is used to support the rotation of the rotor, allowing the two second abutting protrusions and the two first abutting protrusions to rotate on it.

[0008] Preferably, the inner diameter of the front inner wall of the drive gear ring is set to be larger than the inner diameter of the rear inner wall to form a second step, and a support washer for limiting the rotation of the rotor in the inner ring of the drive gear ring is provided at the through hole of the lower lock core.

[0009] Preferably, a rearwardly extending annular portion is integrally formed on the inner wall of the lower lock cylinder through hole, and the supporting washer portion is inserted into the annular portion.

[0010] Preferably, the front washer, rear washer, and support washer are all integrally formed from two concentric rings (radial ring and axial ring), with an L-shaped cross-section, and the radial ring and axial ring are perpendicular to each other, and the thickness of the two rings is the same.

[0011] Preferably, a mounting groove is provided on the rear step surface of the mating step, the rear washer is partially installed in the mounting groove and partially extends into the rear hole wall of the upper lock core through hole, and the surface of the installed rear washer forms a flat surface with the rear step surface of the mating step to support the rotation of the rotor.

[0012] Preferably, the transmission gear assembly includes a first transmission gear that is driven by the drive gear ring, a second transmission gear that is driven by the first transmission gear, and a bevel transmission gear that is driven by the second transmission gear.

[0013] Preferably, the drive motor assembly includes a drive motor and an output gear mounted on the drive motor via an output shaft, wherein the drive motor drives the output gear to rotate via the output shaft.

[0014] Preferably, the large gear of the bevel-shaped transmission gear is positioned facing the output gear, the output gear meshes with the large gear of the bevel-shaped transmission gear, and the drive motor drives the bevel-shaped transmission gear to rotate through the output gear, thereby driving the split lock cylinder assembly to rotate.

[0015] Preferably, the drive motor is installed on the outer bottom of the upper gearbox housing and the lower gearbox housing, the output gear is installed inside the upper gearbox housing and the lower gearbox housing, and the output shaft of the drive motor passes through the bottom of the upper gearbox housing and the lower gearbox housing before the output gear is installed on the output shaft.

[0016] The aforementioned fully automatic geared motor for a thermally broken aluminum smart lock addresses the issue of high production and processing costs caused by the high degree of integration between the lock cylinder and drive gear in existing technologies, resulting in complex structures. It employs a split-type lock cylinder assembly design, breaking down the complex integrated parts into simpler, independent components. This significantly reduces the processing difficulty of the split components, eliminating the need for complex molds and high-precision integrated machining processes, thus reducing processing errors. Reduced component production difficulty lowers mold development costs and raw material waste, improving production efficiency and ultimately reducing overall manufacturing costs. The split-type lock cylinder assembly (drive gear ring + rotor) of this application is not simply a disassembly of the existing integrated structure. Instead, it combines the support and positioning of L-shaped washers (the front washer supports the gear ring rotation, and the rear washer supports the protruding transmission) with step-limiting mechanisms, forming a synergistic structure of disassembly-support-positioning. Compared to the existing integrated structure, not only are processing costs reduced, but the subsequent maintenance costs of the split structure are also significantly reduced. This synergistic effect is unattainable in existing technologies.

[0017] The beneficial effects of this invention will be explained in detail in the embodiments, thereby making the beneficial effects more obvious. Attached Figure Description

[0018] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the specific structure of an embodiment of this application.

[0019] Figure 2 This is a second-view perspective three-dimensional schematic diagram of the specific structure of an embodiment of this application.

[0020] Figure 3 This is a first-view three-dimensional exploded view of the specific structure of an embodiment of this application.

[0021] Figure 4 This is a second-view three-dimensional explosion diagram of the specific structure of an embodiment of this application.

[0022] Figure 5 This is a first-view perspective three-dimensional schematic diagram of the specific structure after the lower gearbox housing has been removed in the embodiments of this application.

[0023] Figure 6This is a second-view perspective three-dimensional schematic diagram of the specific structure after the lower gearbox housing has been removed in the embodiments of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0027] Example 1: like Figures 1-6 As shown, a fully automatic geared motor for a thermally broken aluminum smart lock includes an upper gearbox housing 11 and a lower gearbox housing 12. A transmission gear assembly and a drive motor assembly are installed between the upper gearbox housing 11 and the lower gearbox housing 12. An upper lock cylinder through hole 111 and a lower lock cylinder through hole 121 are respectively provided on the upper gearbox housing 11 and the lower gearbox housing 12. In a specific embodiment of this utility model, a split lock cylinder assembly that is connected to the transmission gear assembly is provided between the upper lock cylinder through hole 111 and the lower lock cylinder through hole 121.

[0028] The aforementioned fully automatic geared motor for thermally broken aluminum smart locks addresses the issue of high production and processing costs caused by the high degree of integration between the lock cylinder and drive gear in existing technologies, which results in complex structures. It employs a split-type lock cylinder assembly design, breaking down the complex integrated parts into simpler, independent components. This significantly reduces the processing difficulty of these components, eliminating the need for complex molds and high-precision integrated machining processes, thus reducing processing errors. Reduced component production difficulty, lower mold development costs, reduced raw material waste, and increased production efficiency ultimately lower overall manufacturing costs.

[0029] In a specific embodiment of this utility model, the split lock cylinder assembly includes a drive gear ring 1 and a rotor 2 with a square hole. The outer diameter of the front section of the rotor 2 is larger than that of the rear section, and two second abutting protrusions 22 are provided on the outer wall of the front section. The rear section of the rotor 2 extends through the upper lock cylinder through hole 111. Two first abutting protrusions 21 are provided on the inner wall of the rear side of the drive gear ring 1. External teeth 24 are provided circumferentially on the outer wall of the front side of the drive gear ring 1. The outer diameter of the outer wall of the rear side of the drive gear ring 1 is set to be smaller than the outer diameter of the external teeth 24, thus forming a first step 23. The inner diameter of the front hole wall of the upper lock cylinder through hole 111 is set to be larger than the inner diameter of the rear hole wall, thus forming a mating step 112. A front washer 3 and a rear washer 4 are respectively provided at the mating step 112. When installing the drive gear ring 1, the front washer 3 and the rear washer 4 are first installed at the front and rear of the mating step 112, respectively. Figure 3 As shown, the rear washer 4 is installed on the rear part of the mating step 112 from the second step surface to the upper lock cylinder through hole 111, while the front washer 3 is installed on the first step surface to the second step surface of the mating step 112. Then, the drive gear ring 1 is placed on the front washer 3 and the rear washer 4. The front washer 3 mates with the mating step 112 to support the rotation of the drive gear ring 1, and the rear washer 4 is used to support the rotation of the rotor 2, allowing the two second abutting protrusions 22 and the two first abutting protrusions 21 to rotate on it.

[0030] The stepped fit between the drive gear ring and the upper lock core through hole (the first step and the mating step), the step design of the rotor, combined with the limiting function of the front washer, rear washer and support washer, ensure that the rotor rotates accurately within the drive gear ring, avoids deviation or shaking, and has high positioning accuracy.

[0031] In a specific embodiment of this utility model, the inner diameter of the front inner wall of the drive gear ring 1 is set to be larger than the inner diameter of the rear inner wall to form a second step 25, and a support washer 5 for limiting the rotation of the rotor 2 in the inner ring of the drive gear ring 1 is provided at the lower lock core through hole 121.

[0032] Multiple washer supports and a stepped positioning structure reduce gaps and shaking during rotation, thus lowering operating noise; uniform contact of the friction surfaces prevents jamming caused by excessive local force, resulting in smoother opening and closing of the lock.

[0033] The modular design makes the parts more versatile. If local wear occurs in the lock cylinder components (such as a single failure of the rotor or drive gear ring), there is no need to replace the whole thing. Only the corresponding independent parts need to be replaced, making maintenance more convenient and cost-effective. The standardized structure of gasket-type parts (L-shaped concentric rings) makes them easy to mass-produce and replace, further reducing maintenance difficulty.

[0034] In a specific embodiment of this utility model, an annular portion 122 extending rearward is integrally formed on the inner wall of the lower lock core through hole 121, and the support washer 5 is partially inserted into the annular portion 122.

[0035] In a specific embodiment of this utility model, the front washer 3, the rear washer 4, and the support washer 5 are all integrally formed from two concentric rings (radial ring and axial ring), with an L-shaped cross-section. The radial ring and the axial ring are perpendicular (with an included angle of 90°±1°), and the thickness of the two rings is the same.

[0036] The front washer supports the drive gear ring to rotate, the rear washer supports the rotor and abuts the protrusion to rotate, and the support washer limits the rotor. All three are integrally formed L-shaped concentric rings with uniform contact area and balanced force, reducing friction and wear during rotation.

[0037] In a specific embodiment of this utility model, a mounting groove 113 is provided on the rear step surface of the mating step 112. The rear washer 4 is partially installed in the mounting groove 113 and partially extends into the rear hole wall of the upper lock core through hole 111. The surface of the installed rear washer 4 forms a flat surface with the rear step surface of the mating step 112 to support the rotation of the rotor 2.

[0038] The installation logic of the split lock cylinder assembly is clear (install the front / rear washers first → place the drive gear ring → cooperate with the support washer to limit the rotor). With the positioning structure such as steps and mounting grooves, no complicated assembly tools are required, the assembly error tolerance is high, and the assembly efficiency of the production line can be improved. The rear washer is installed in the mounting groove of the mating step, forming a flat support surface after assembly, eliminating the need for additional calibration and further simplifying the assembly process.

[0039] Example 2: The difference from Example 1 is that, as Figures 1-6 As shown in the specific embodiment of this utility model, the transmission gear assembly includes a first transmission gear 41 that is connected to the drive gear ring 1, a second transmission gear 42 that is connected to the first transmission gear 41, and an umbrella-shaped transmission gear 43 that is connected to the second transmission gear 42.

[0040] In a specific embodiment of this utility model, the drive motor assembly includes a drive motor 51 and an output gear 53 mounted on the drive motor 51 via an output shaft 52. The drive motor 51 drives the output gear 53 to rotate via the output shaft 52.

[0041] In a specific embodiment of this utility model, the large gear of the umbrella-shaped transmission gear 43 is positioned facing the output gear 53, and the output gear 53 meshes with the large gear of the umbrella-shaped transmission gear 43. The drive motor 51 drives the umbrella-shaped transmission gear 43 to rotate through the output gear 53, thereby driving the split lock cylinder assembly to rotate.

[0042] In a specific embodiment of this utility model, the drive motor 51 is installed on the outer side of the bottom of the upper gearbox housing 11 and the lower gearbox housing 12, the output gear 53 is installed inside the upper gearbox housing 11 and the lower gearbox housing 12, and the output shaft 52 of the drive motor 51 passes through the bottom of the upper gearbox housing 11 and the lower gearbox housing 12, and the output gear 53 is installed on the output shaft 52.

[0043] The transmission gear assembly (first transmission gear + second transmission gear + bevel transmission gear) works in conjunction with the drive motor assembly. The output direction is changed through the bevel transmission gear, while simultaneously reducing speed and increasing torque to meet the torque requirements of the smart lock switch, resulting in smoother lock opening and closing. The output gear meshes with the large gear of the bevel transmission gear. The transmission ratio is reasonably designed, resulting in high power transmission efficiency and avoiding power loss.

[0044] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A fully automatic geared motor for a thermally broken aluminum smart lock, comprising an upper gearbox housing (11) and a lower gearbox housing (12), wherein a transmission gear assembly and a drive motor assembly are installed between the upper gearbox housing (11) and the lower gearbox housing (12), and the upper gearbox housing (11) and the lower gearbox housing (12) are respectively provided with an upper lock cylinder through hole (111) and a lower lock cylinder through hole (121), characterized in that, A split lock cylinder assembly, which is connected to the transmission gear assembly, is provided between the upper lock cylinder through hole (111) and the lower lock cylinder through hole (121).

2. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 1, characterized in that, The split-type lock cylinder assembly includes a drive gear ring (1) and a rotor (2) with a square hole. The outer diameter of the front section of the rotor (2) is larger than that of the rear section, and two second abutting protrusions (22) are provided on the outer wall of the front section. The rear section of the rotor (2) extends through the upper lock cylinder through hole (111). Two first abutting protrusions (21) are provided on the inner wall of the rear side of the drive gear ring (1). External teeth (24) are provided circumferentially on the outer wall of the front side of the drive gear ring (1). The outer diameter of the outer wall of the rear side of the drive gear ring (1) is set to be smaller than the outer diameter of the external teeth (24) to form a first step (23). The inner diameter of the front hole wall of the upper lock cylinder through hole (111) is set to be larger than the inner diameter of the rear hole wall to form a mating step (11). 2) A front washer (3) and a rear washer (4) are respectively provided at the mating step (112). When the drive gear ring (1) is installed, the rear washer (4) is first installed at the rear part of the second step surface of the mating step (112) to the upper lock core through hole (111), while the front washer (3) is installed at the first step surface to the second step surface of the mating step (112). Then the drive gear ring (1) is placed on the front washer (3) and the rear washer (4). The front washer (3) mates with the mating step (112) to support the rotation of the drive gear ring (1). The rear washer (4) is used to support the rotation of the rotor (2) so that the two second abutting protrusions (22) and the two first abutting protrusions (21) can rotate on it.

3. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 2, characterized in that, The inner diameter of the front inner wall of the drive gear ring (1) is set to be larger than the inner diameter of the rear inner wall to form a second step (25). A support washer (5) is provided at the lower lock core through hole (121) to limit the rotation of the rotor (2) in the inner ring of the drive gear ring (1).

4. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 3, characterized in that, The inner wall of the lower lock core through hole (121) has an integrally formed ring portion (122) extending backward, and the support washer (5) is partially inserted into the ring portion (122).

5. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 3 or 4, characterized in that, The front washer (3), rear washer (4) and support washer (5) are all integrally formed from two concentric rings, with an L-shaped cross-section.

6. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 2, 3, or 4, characterized in that, A mounting groove (113) is provided on the rear step surface of the mating step (112). The rear washer (4) is partially installed in the mounting groove (113) and partially extends into the rear hole wall of the upper lock core through hole (111). The surface of the installed rear washer (4) forms a flat surface with the rear step surface of the mating step (112) to support the rotation of the rotor (2).

7. A fully automatic geared motor for a thermally broken aluminum smart lock according to claim 1, 2, 3, or 4, characterized in that, The transmission gear assembly includes a first transmission gear (41) that is connected to the drive gear ring (1), a second transmission gear (42) that is connected to the first transmission gear (41), and an umbrella-shaped transmission gear (43) that is connected to the second transmission gear (42).

8. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 7, characterized in that, The drive motor assembly includes a drive motor (51) and an output gear (53) mounted on the drive motor (51) via an output shaft (52), wherein the drive motor (51) drives the output gear (53) to rotate via the output shaft (52).

9. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 8, characterized in that, The large gear of the umbrella-shaped transmission gear (43) is positioned facing the output gear (53). The output gear (53) meshes with the large gear of the umbrella-shaped transmission gear (43). The drive motor (51) drives the umbrella-shaped transmission gear (43) to rotate through the output gear (53), thereby driving the split lock cylinder assembly to rotate.

10. The fully automatic geared motor for a thermally broken aluminum smart lock according to claim 8, characterized in that, The drive motor (51) is installed on the outer bottom of the upper gearbox housing (11) and the lower gearbox housing (12). The output gear (53) is installed inside the upper gearbox housing (11) and the lower gearbox housing (12). After the output shaft (52) of the drive motor (51) passes through the bottom of the upper gearbox housing (11) and the lower gearbox housing (12), the output gear (53) is installed on the output shaft (52).

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