Hollow cup deceleration motor and lock cylinder integrated driving structure
By integrating the hollow cup geared motor with the lock cylinder into a single drive structure, the problems of low transmission efficiency and large space occupation of external motor structures are solved, achieving a compact, efficient, and safe lock design suitable for high security levels and thin and light requirements.
Patent Information
- Application Number
- CN202522136978.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-10
AI Technical Summary
In existing fully automatic electronic door locks, the external motor structure has problems such as low transmission efficiency, easy misalignment, safety hazards caused by self-locking characteristics, insufficient torque, and large space occupation, making it difficult to meet the requirements of high security level and thin and light design.
It adopts an integrated drive structure of hollow cup geared motor and lock cylinder, and realizes direct power transmission through embedded integrated transmission gear box and lock cylinder. Combined with multi-stage reduction gear mechanism and connecting steel plate, the power transmission path is optimized and the structural rigidity and reliability are enhanced.
It achieves a compact, energy-efficient, and fast-responding drive module that adapts to space-constrained requirements, improves mechanical durability and safety, and meets the requirements of miniaturization and thinness design.
Smart Images
Figure CN224679304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fully automatic electronic door lock technology, and in particular to an integrated drive structure of a hollow cup geared motor and a lock cylinder. Background Technology
[0002] Currently, most fully automatic electronic door locks on the market use an external motor structure, meaning the motor is usually installed outside the lock panel or connected to the lock cylinder via a linkage. This structure has the following problems.
[0003] Firstly, the transmission efficiency is low and misalignment is prone to occur. During use, the motor power is transmitted to the lock cylinder through the connecting rod. During installation or long-term use, due to the fit gap or installation deviation between the connecting rod and the lock cylinder, transmission misalignment is easily caused, increasing motion resistance, affecting the smooth extension and retraction of the bolt, and even causing excessive motor load and shortening its lifespan. The external motor currently used has a self-locking characteristic. In actual use, a sudden power failure will prevent the motor from being directly driven to unlock, causing a significant safety hazard. In addition, the output torque of ordinary DC motors is limited, making it difficult to drive large security door locks with deadbolts or heavy bolts, thus limiting the types of doors that can be used, especially in high-security door lock applications. Furthermore, traditional external motors and transmission structures occupy a lot of space, increasing the thickness of the door lock panel, affecting the overall aesthetics and installation flexibility, and failing to meet the design requirements of modern homes for thinner and more concealed door locks. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an integrated drive structure of hollow cup geared motor and lock core, which can improve the integration level of the product and optimize the power transmission path through electromechanical integration design.
[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:
[0006] An integrated drive structure for a hollow cup geared motor and a lock cylinder includes a hollow cup geared motor, a transmission gearbox, a lock cylinder locking mechanism, and a connecting steel plate. The transmission gearbox includes a housing and a transmission mechanism, which is installed inside the housing. The hollow cup geared motor is embedded in the housing with its output shaft facing inward. The output shaft of the hollow cup geared motor is connected to the input end of the transmission mechanism, and the output end of the transmission mechanism is connected to the lock cylinder locking mechanism. The power output by the hollow cup geared motor is reduced and amplified by the transmission mechanism, directly driving the lock cylinder locking mechanism. The connecting steel plate is installed between the housing and the lock cylinder locking mechanism to fill the gap between them.
[0007] This design achieves a compact, energy-efficient, responsive, and stable drive module by embedding a coreless geared motor and directly directing the power transmission path. This module is particularly suitable for smart locks with limited space and strict requirements for power consumption and noise. Specifically, in this solution, the coreless geared motor is embedded in the housing of the transmission gearbox, rather than being fixed by external connectors. This overcomes the space limitations of traditional fixed backpack-style motor structures. The motor, transmission gearbox, and lock cylinder locking mechanism are tightly connected to form a single module. This significantly reduces unnecessary mounting brackets and connection space. Power is output from the motor and directly transmitted to the lock cylinder locking mechanism via the gearbox. The transmission path is short, with fewer intermediate links, significantly reducing the volume and axial length of the entire drive structure, thus allowing it to easily adapt to locks with high internal space requirements. Furthermore, the coreless geared motor used in this design has the inherent advantages of low inertia and fast start-up. Combined with the direct drive structure, the time from issuing a command to the lock cylinder locking mechanism completing the locking or unlocking action is extremely short. By using connecting steel sheets to fill the gap between the housing and the lock cylinder locking mechanism, the hollow cup geared motor and the lock cylinder locking mechanism are integrated into one unit. This enhances the structural connection rigidity between the two main modules, preventing abnormal noises, wear, and even malfunctions that may occur during long-term use due to minor loosening. This improves the product's mechanical durability and reliability, and extends its service life.
[0008] Furthermore, the lock cylinder locking mechanism includes a lock body and a lock cylinder. The lock body includes a lock body shell, a bolt, and a connecting rod. The lock cylinder is installed inside the lock body shell and rotatably connected to it. The connecting rod is fixedly connected to the end of the lock body shell furthest from the lock cylinder. The bolt is installed on the lock body shell, and the connecting rod is fixedly connected to the transmission mechanism. With this design, the lock cylinder, lock body shell, and connecting rod are arranged sequentially along the same or parallel axes, reducing the radial space occupied by each structure. This allows the entire locking module to easily adapt to locks with limited space, providing crucial support for the miniaturization and thinning of the product design.
[0009] Furthermore, the transmission mechanism is a multi-stage reduction gear mechanism, including an input wheel, an output wheel, and at least one set of reduction gears. The input wheel is fixedly connected to the output shaft of the hollow cup geared motor, the output wheel is fixedly connected to the connecting rod, and the reduction gear set meshes with both the input and output wheels. The core function of this multi-stage reduction gear mechanism is to precisely convert the high-speed, low-torque output characteristics of the hollow cup geared motor into the low-speed, high-torque characteristics required to drive the lock cylinder locking mechanism, thereby achieving a comprehensive advantage of power matching, efficiency improvement, smooth operation, flexible layout, and high reliability. In addition, the motor power is transmitted step-by-step through gears. This multi-stage reduction gear mechanism has a spur gear structure, and when the hollow cup geared motor connected to it stops moving, the transmission mechanism will not self-lock, thus solving the problem of lock jamming caused by self-locking of the transmission mechanism, preventing manual opening and closing of the lock, and ensuring access safety.
[0010] Furthermore, a connecting steel plate is fixedly installed between the housing and the lock body housing. A protrusion is located on the lower part of the lock body housing, and a groove is provided on the connecting steel plate, with the protrusion installed within the groove. This connection structure, through the interlocking design of the protrusion and groove, achieves positioning between the housing and the lock body housing, effectively preventing rotation, enhancing rigidity, and simplifying the installation process.
[0011] Furthermore, the hollow cup geared motor, transmission mechanism, and connecting rod are arranged sequentially to form an integrated and compact structure. This sequentially arranged integrated and compact structure, through space optimization and power path planning, achieves miniaturization, high efficiency, and high reliability of the entire drive module, thereby meeting the design requirements of small size and high power.
[0012] Furthermore, it also includes a connecting bearing, whose inner ring is fixedly connected to the connecting rod, and whose outer ring is fixedly connected to the housing. The presence of the connecting bearing provides a certain degree of restraint to the connecting rod, preventing minor displacement of the connecting rod due to vibration or changes in force.
[0013] Furthermore, the rated speed of the coreless geared motor is no less than 20,000 rpm. By significantly increasing the speed, the coreless geared motor can achieve high power output with only a small amount of torque required. This allows the equipment to achieve a compact design and weight reduction without sacrificing power.
[0014] Furthermore, the torque output of the transmission gearbox is no less than 20 kg·cm. This torque value is designed to ensure that the equipment can maintain a stable operating state and will not stall during operation, even if the load fluctuates or encounters certain resistance.
[0015] In summary, this integrated drive structure of the hollow cup geared motor and lock cylinder, through mechatronics design, achieves integration between the motor, gearbox, and lock cylinder locking mechanism, reducing size, optimizing the power transmission path, making the lock response faster, and improving the user experience. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0017] Figure 1 This utility model provides a schematic diagram of the overall assembly structure;
[0018] Figure 2 This is a schematic diagram of part of the structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the connecting steel plate structure of this utility model;
[0020] The components include: hollow cup geared motor-1, transmission gearbox-2, housing-21, transmission mechanism-22, input wheel-221, output wheel-222, reduction gear set-223, lock cylinder locking mechanism-3, lock cylinder-31, lock body shell-32, protrusion-321, lock tongue-33, connecting rod-34, connecting steel plate-4, groove-41, and connecting bearing-5. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] like Figures 1 to 3As shown, an integrated drive structure for a hollow cup geared motor 1 and a lock cylinder 31 includes a hollow cup geared motor 1, a transmission gearbox 2, a lock cylinder locking mechanism 3, and a connecting steel plate 4. The transmission gearbox 2 includes a housing 21 and a transmission mechanism 22. The transmission mechanism 22 is installed inside the housing 21. The hollow cup geared motor 1 is embedded in the housing 21 with its output shaft facing the inside of the housing 21. The output shaft of the hollow cup geared motor 1 is connected to the input end of the transmission mechanism 22, and the output end of the transmission mechanism 22 is connected to the lock cylinder locking mechanism 3. The power output by the hollow cup geared motor 1 is reduced and amplified by the transmission mechanism 22, and then directly drives the lock cylinder locking mechanism 3 to work. The connecting steel plate 4 is installed between the housing 21 and the lock cylinder locking mechanism 3 to fill the gap between them.
[0024] This design achieves a compact, energy-efficient, responsive, and stable drive module by embedding a coreless geared motor 1 and directly directing the power transmission path. This module is particularly suitable for smart locks with limited space and strict requirements for power consumption and noise. Specifically, in this solution, the coreless geared motor 1 is embedded in the housing 21 of the transmission gearbox 2, rather than being fixed by external connectors. This overcomes the space limitations of traditional fixed backpack-style motor structures. The motor, transmission gearbox 2, and lock cylinder locking mechanism 3 are tightly connected to form a single module. This significantly reduces unnecessary mounting brackets and connection space. Power is output from the motor and directly transmitted to the lock cylinder locking mechanism 3 via the gearbox. The short transmission path and fewer intermediate links significantly reduce the volume and axial length of the entire drive structure, allowing it to easily adapt to locks with high internal space requirements. Furthermore, the coreless geared motor 1 used in this design has inherent advantages such as low inertia and fast start-up. Combined with the direct drive structure, the time from issuing a command to the lock cylinder locking mechanism 3 completing the locking or unlocking action is extremely short. The use of connecting steel plates 4 to fill the gap between the housing 21 and the lock cylinder locking mechanism 3 integrates the hollow cup geared motor 1 and the lock cylinder locking mechanism 3 into one unit. This enhances the structural connection rigidity between the two main modules, preventing abnormal noises, wear, or even malfunctions that may occur during long-term use due to minor loosening. This improves the product's mechanical durability and reliability, and extends its service life.
[0025] Preferably, the lock cylinder locking mechanism 3 includes a lock body and a lock cylinder 31. The lock body includes a lock body shell 32, a bolt 33, and a connecting rod 34. The lock cylinder 31 is installed inside the lock body shell 32 and is rotatably connected to it. The connecting rod 34 is fixedly connected to the end of the lock body shell 32 away from the lock cylinder 31. The bolt 33 is installed on the lock body shell 32. The connecting rod 34 is fixedly connected to the transmission mechanism 22. With this design, the lock cylinder 31, lock body shell 32, and connecting rod 34 are arranged sequentially along the same axis or parallel axes, reducing the radial space occupied by each structure. This allows the entire locking module to be easily adapted to locks with limited space, providing key support for the miniaturization and thinning design of the product.
[0026] Preferably, the transmission mechanism 22 is a multi-stage reduction gear mechanism, comprising an input wheel 221, an output wheel 222, and at least one set of reduction gears 223. The input wheel 221 is fixedly connected to the output shaft of the hollow cup geared motor 1, and the output wheel 222 is fixedly connected to the connecting rod 34. The reduction gears 223 are meshed with the input wheel 221 and the output wheel 222 respectively. The core function of this multi-stage reduction gear mechanism is to accurately convert the high-speed, low-torque output characteristics of the hollow cup geared motor 1 into the low-speed, high-torque characteristics required to drive the lock cylinder locking mechanism 3, thereby achieving a comprehensive advantage of power matching, efficiency improvement, smooth operation, flexible layout, and high reliability. In addition, the motor power is transmitted step by step through the gears. This multi-stage reduction gear mechanism is a spur gear structure. When the hollow cup geared motor 1 connected to it stops moving, the transmission mechanism 22 will not self-lock, thus solving the problem of the lock body jamming due to the self-locking of the transmission mechanism 22, making it impossible to manually open or close the lock, and ensuring the safety of entry and exit.
[0027] Preferably, the connecting steel plate 4 is fixedly installed between the housing 21 and the lock body shell 32. A protrusion 321 is provided on the lower part of the lock body shell 32, and a groove 41 is provided on the connecting steel plate 4, with the protrusion 321 installed in the groove 41. This connection structure, through the interlocking design of the protrusion 321 and the groove 41, achieves the positioning between the housing 21 and the lock body shell 32, effectively preventing rotation, enhancing rigidity, and simplifying the installation process.
[0028] Preferably, the hollow cup geared motor 1, transmission mechanism 22, and connecting rod 34 are arranged sequentially to form an integrated and compact structure. This sequentially arranged integrated and compact structure, through space optimization and power path planning, achieves miniaturization, high efficiency, and high reliability of the entire drive module, thereby meeting the design requirements of small size and high power.
[0029] Preferably, a connecting bearing 5 is also included. The inner ring of the connecting bearing 5 is fixedly connected to the connecting rod 34, and the outer ring is fixedly connected to the housing 21. The presence of the connecting bearing 5 plays a certain limiting role for the connecting rod 34, preventing minor displacement of the connecting rod 34 due to vibration or changes in force.
[0030] Preferably, the rated speed of the coreless geared motor 1 is not less than 20,000 rpm. By significantly increasing the speed, the coreless geared motor 1 can achieve high power output with only a small amount of torque required. This allows the equipment to achieve a compact design and weight reduction without sacrificing power.
[0031] Preferably, the torque output of the transmission gearbox 2 is not less than 20 kg·cm. This torque value is designed to ensure that the equipment can maintain a stable operating state and will not stall during operation, even if the load fluctuates or encounters certain resistance.
[0032] In summary, this integrated drive structure of the hollow cup geared motor and lock cylinder, through mechatronics design, achieves integration between the motor, gearbox, and lock cylinder locking mechanism, reducing size, optimizing the power transmission path, making the lock response faster, and improving the user experience.
[0033] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 hollow cup geared motor and lock core integrated drive structure, characterized in that: The device includes a hollow cup geared motor, a transmission gearbox, a lock cylinder locking mechanism, and a connecting steel plate. The transmission gearbox includes a housing and a transmission mechanism, which is installed inside the housing. The hollow cup geared motor is embedded in the housing with its output shaft facing inward. The output shaft of the hollow cup geared motor is connected to the input end of the transmission mechanism, and the output end of the transmission mechanism is connected to the lock cylinder locking mechanism. The power output by the hollow cup geared motor is reduced and amplified by the transmission mechanism, directly driving the lock cylinder locking mechanism. The connecting steel plate is installed between the housing and the lock cylinder locking mechanism to fill the gap between them.
2. The integrated drive structure of hollow cup geared motor and lock cylinder according to claim 1, characterized in that: The lock cylinder locking mechanism includes a lock body and a lock cylinder. The lock body includes a lock body shell, a bolt, and a connecting rod. The lock cylinder is installed inside the lock body shell and is rotatably connected to the lock body shell. The connecting rod is fixedly connected to the end of the lock body shell away from the lock cylinder. The bolt is installed on the lock body shell. The connecting rod is fixedly connected to the transmission mechanism.
3. The integrated drive structure of the hollow cup geared motor and lock core according to claim 2, characterized in that: The transmission mechanism is a multi-stage reduction gear mechanism, which includes an input wheel, an output wheel, and at least one set of reduction gears. The input wheel is fixedly connected to the output shaft of the hollow cup geared motor, the output wheel is fixedly connected to the connecting rod, and the reduction gears are meshed with the input wheel and the output wheel respectively.
4. The integrated drive structure of hollow cup geared motor and lock cylinder according to claim 3, characterized in that: The connecting steel plate is fixedly installed between the housing and the lock body housing. A protrusion is provided on the lower part of the lock body housing, and a groove is provided on the connecting steel plate. The protrusion is installed in the groove.
5. The integrated drive structure of the hollow cup geared motor and lock cylinder according to claim 4, characterized in that: The hollow cup geared motor, transmission mechanism, and connecting rod are arranged in sequence to form an integrated and compact structure.
6. The integrated drive structure of hollow cup geared motor and lock cylinder according to claim 5, characterized in that: It also includes a connecting bearing, wherein the inner ring of the connecting bearing is fixedly connected to the connecting rod, and the outer ring is fixedly connected to the housing.
7. The integrated drive structure of hollow cup geared motor and lock cylinder according to claim 1, characterized in that: The rated speed of the hollow cup geared motor is not less than 20,000 rpm.
8. The integrated drive structure of hollow cup geared motor and lock cylinder according to claim 1, characterized in that: The torque output by the transmission gearbox is not less than 20 kg / cm.