Intelligent door lock structure with detachable battery module
By designing a through-front battery compartment and a flexible lifting component in the smart lock, combined with a magnetic fixing structure, the problems of cumbersome operation and poor contact in the battery compartment of traditional smart locks are solved, achieving convenient installation and stable power supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN XINZHENGYU TECH
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional smart door locks have cumbersome battery compartment designs, and poor battery contact can easily occur after installation. This makes battery replacement difficult, especially in confined spaces, and affects power supply stability.
The design features a battery slot that runs through the front of the door lock body and a flexible lifting assembly. The battery module reliably contacts the power supply contacts through the lifting assembly, and installation and replacement require no tools. Combined with a magnetic fixing structure, the operation is simplified.
It enables convenient installation and removal of battery modules, ensures power supply stability and reliability, avoids poor contact problems caused by vibration or gaps, and improves user experience.
Smart Images

Figure CN224549853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart door lock technology, specifically to a smart door lock structure with a detachable battery module. Background Technology
[0002] Currently, smart door locks are widely used due to their convenience and security. However, the battery compartment design of traditional smart door locks has many inconveniences. The common design is to place the battery compartment inside the door lock or inside the back cover. Replacing the battery requires the use of tools such as screwdrivers to disassemble the outer casing, which is cumbersome and results in a poor user experience.
[0003] In addition, the battery is placed directly inside the compartment after installation, lacking an effective positioning and ejection mechanism, which may lead to poor battery contact and affect power supply stability. When replacement is needed, the battery is not easy to remove, especially for battery compartments installed inside the door, where the operating space is limited. Utility Model Content
[0004] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a smart door lock structure with a detachable battery module, comprising:
[0005] A door lock body, wherein a battery slot is provided at the lower end of the door lock body, and the battery slot extends through the front end of the door lock body;
[0006] A lifting assembly is disposed within the battery compartment and can be elastically raised or lowered along the length of the door lock body;
[0007] A battery module is disposed in the battery slot and on the lifting assembly, so that it is lifted by the lifting assembly and electrically connected to the door lock body to supply power to the door lock body.
[0008] Preferably, the lifting assembly includes:
[0009] A fixing groove is provided at the bottom of the battery compartment;
[0010] Two elastic elements are respectively disposed at both ends of the fixing groove and are respectively arranged along the length direction of the door lock body;
[0011] A fixing plate is disposed on top of the two elastic members;
[0012] A cushioning pad is disposed on top of the fixing plate.
[0013] Preferably, the battery compartment is provided with four fixing posts, which are respectively located at the corners of the battery compartment. The fixing posts are hollow inside and are arranged along the thickness direction of the battery compartment.
[0014] Preferably, the fixed column is provided with a support member, which is arranged along the length direction of the fixed column.
[0015] Preferably, the fixing column is further provided with a first magnetic attractor, which is disposed on the support member.
[0016] Preferably, the end face of the battery compartment is provided with a cover plate, and the inner side of the cover plate is provided with four positioning posts. The positioning posts are respectively located at the corners of the cover plate, and the four positioning posts correspond to the four fixing posts respectively.
[0017] Preferably, the positioning post is further provided with a second magnetic attractor, which corresponds to the first magnetic attractor.
[0018] Preferably, the inner side of the cover plate is provided with a sponge pad, which abuts against the surface of the battery module.
[0019] Preferably, the cover plate has a handle on its surface.
[0020] Preferably, a connecting piece is provided at the top of the battery slot, and the connecting piece is electrically connected to the battery module.
[0021] The above-described solution of this utility model has at least the following beneficial effects:
[0022] When the battery module needs to be installed, the user directly pushes it into the battery slot at the front of the lock body. During this process, the battery module first contacts and presses down on the lifting component located in the battery slot, causing the lifting component to overcome its elastic force and descend along the length of the lock body. Once the battery module is fully inserted, the lifting component, under the action of elastic restoring force, lifts the battery module upward. At this point, the battery module is lifted to a preset height, and its electrodes reliably contact the power supply contacts inside the lock body, thereby achieving a stable power supply to the lock body.
[0023] When the battery module needs to be replaced, the user simply pulls it outward from the front. During the pulling process, the battery module leaves the surface of the lifting assembly. Once the battery module is completely removed or partially removed, the lifting assembly, freed from downward pressure, will immediately spring upward along the length of the door lock body under its own elastic restoring force, returning to its initial lifting position, ready for the next installation of a new battery module; the entire disassembly process requires no tools and is very convenient.
[0024] The design of the battery slot running through the front of the door lock body, combined with the elastic lifting characteristics of the lifting component, allows users to directly insert, install, remove, and disassemble the battery module from the front of the door lock without any tools, making the operation extremely simple and quick. The elastic lifting force of the lifting component continuously acts on the battery module, stably pressing it upwards onto the power supply contacts of the door lock body, effectively avoiding poor contact problems caused by vibration or gaps, and ensuring the stability and reliability of the power supply.
[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0027] Figure 1 This is a structural diagram of a smart door lock structure with a detachable battery module provided in an embodiment of this utility model;
[0028] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure;
[0029] Figure 3 yes Figure 1 A schematic diagram of the BB cross-sectional structure.
[0030] Explanation of icon numbers:
[0031] 1. Door lock body; 2. Lifting assembly; 3. Battery module;
[0032] 101. Battery slot; 102. Fixing post; 103. Support component; 104. First magnetic component; 105. Cover plate; 106. Positioning post; 107. Second magnetic component; 108. Sponge pad; 109. Handle; 110. Connecting piece.
[0033] 201. Fixing groove; 202. Elastic element; 203. Fixing plate; 204. Buffer pad.
[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not 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.
[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0040] The following describes in detail, with reference to the accompanying drawings, the structure of the smart door lock with a detachable battery module according to an embodiment of the present invention.
[0041] Please see Figures 1-3 In this embodiment, the device includes: a door lock body 1, with a battery slot 101 at its lower end, the battery slot 101 extending through the front end of the door lock body 1; a lifting assembly 2, which is located within the battery slot 101 and can elastically rise or fall along the length of the door lock body 1; and a battery module 3, which is located within the battery slot 101 and mounted on the lifting assembly 2, so that it is lifted by the lifting assembly 2 and electrically connected to the door lock body 1 to supply power to the door lock body 1. When the battery module 3 needs to be installed, the user directly pushes the battery module 3 into the battery slot 101 extending through the front end of the door lock body 1. During the pushing process, the battery module 3 first contacts and presses downward against the lifting assembly 2 located within the battery slot 101, causing the lifting assembly 2 to overcome its elastic force and descend along the length of the door lock body 1. After the battery module 3 is fully pushed into place, the lifting assembly 2, under the action of elastic restoring force, lifts the battery module 3 upward. At this point, battery module 3 is lifted to a preset height, and its electrodes reliably contact the power supply contacts inside the door lock body 1, thereby achieving a stable power supply to the door lock body 1. When it is necessary to replace battery module 3, the user only needs to pull battery module 3 outward from the front. During the pulling process, battery module 3 leaves the surface of lifting component 2. Once battery module 3 is completely removed or partially removed, lifting component 2, having lost its downward pressure, will immediately spring upward along the length of door lock body 1 under its own elastic restoring force, returning to the initial lifting position, preparing for the next installation of a new battery module 3; the entire disassembly process requires no tools and is easy to operate.
[0042] The design of the battery slot 101 extending through the front end of the door lock body 1, combined with the elastic lifting characteristics of the lifting component 2, allows users to directly insert, install, remove, and disassemble the battery module 3 from the front end of the door lock without any tools, making the operation extremely simple and quick. The elastic lifting force of the lifting component 2 continuously acts on the battery module 3, stably pressing it upwards onto the power supply contacts of the door lock body 1, effectively avoiding poor contact problems caused by vibration or gaps, and ensuring the stability and reliability of the power supply.
[0043] In this embodiment, the lifting assembly 2 includes: a fixing groove 201, which is located at the bottom of the battery compartment 101; two elastic members 202, which are respectively located at both ends of the fixing groove 201 and are respectively arranged along the length direction of the door lock body 1; a fixing plate 203, which is located on top of the two elastic members 202; and a buffer pad 204, which is located on top of the fixing plate 203.
[0044] The fixing groove 201 located at the bottom of the battery compartment 101 provides a stable mounting base for the entire lifting assembly 2 and limits its range of motion. The two elastic elements 202 (such as springs) installed at both ends of the fixing groove 201 and arranged along the length of the door lock body 1 are the core components that generate the lifting force. When the battery module 3 is pushed into the battery compartment 101, its gravity presses down on the fixing plate 203, thereby compressing the two elastic elements 202 below and storing elastic potential energy. When the battery module 3 needs to be removed or the battery module 3 is not installed, the potential energy stored in the elastic elements 202 is released, pushing the fixing plate 203 and the buffer pad 204 to move upward.
[0045] The fixing plate 203, positioned on top of the two elastic members 202, serves as a direct support platform for the battery module 3. Its function is to evenly distribute the pressure of the battery module 3 to the two elastic members 202 below, while simultaneously evenly distributing the lifting force generated by the elastic members 202 upwards to the battery module 3, ensuring balanced force distribution and preventing tilting. The buffer pad 204 (such as a rubber pad or silicone pad), positioned on top of the fixing plate 203, directly contacts the bottom surface of the battery module 3. Its functions are twofold: first, to buffer the impact generated during installation or door lock vibration, protecting the battery module 3 and the lifting assembly 2; and second, to increase friction, preventing the battery module 3 from easily sliding or shifting on the fixing plate 203 during lifting or transportation.
[0046] In this embodiment, four fixing posts 102 are provided inside the battery compartment 101. The four fixing posts 102 are respectively located at the corners of the battery compartment 101. The fixing posts 102 are hollow inside and are arranged along the thickness direction of the battery compartment 101. A support member 103 is provided inside the fixing post 102 and is arranged along the length direction of the fixing post 102. A first magnetic attractor 104 is also provided inside the fixing post 102 and is disposed on the support member 103.
[0047] Four fixing posts 102 located at the four corners of the battery compartment 101 are arranged along the thickness direction (perpendicular to the mounting surface) to provide precise insertion guide holes for the positioning posts 106 on the cover plate 105. This four-corner distribution design ensures that the cover plate 105 can be accurately positioned during installation, effectively preventing the cover plate 105 from being misaligned, tilted, or shaking, and ensuring that the cover plate 105 is flat and fits snugly against the front end face of the door lock body 1. Although the hollow structure inside the fixing posts 102 reduces weight, it may affect its bending and compressive strength. The support members 103 (such as metal posts or reinforcing ribs) set inside the fixing posts 102 extend along their length, significantly enhancing the overall structural strength and rigidity of the fixing posts 102. This allows the fixing posts 102 to more stably withstand the force when the positioning posts 106 of the cover plate 105 are inserted, the magnetic attraction force, and the impact and vibration during daily use, preventing the fixing posts 102 from deforming or being damaged, and improving the durability and reliability of the entire battery compartment structure.
[0048] The key design is to directly mount the first magnetic component 104 (such as a magnet) onto the support 103. The support 103 provides a stable mounting base, ensuring that the first magnetic component 104 is accurately and firmly positioned inside the fixing post 102, preventing displacement or detachment. This lays a solid foundation for the subsequent strong magnetic fixation of the cover 105 via the second magnetic component 107. The magnetic fixation method eliminates the hassle of using screws or clips, making the opening and closing of the cover 105 extremely simple and quick (one-click adsorption), thus improving the user experience.
[0049] In this embodiment, the end face of the battery slot 101 is provided with a cover plate 105, and the inner side of the cover plate 105 is provided with four positioning posts 106. The positioning posts 106 are respectively located at the corners of the cover plate 105, and the four positioning posts 106 correspond to the four fixing posts 102 respectively. The positioning posts 106 are also provided with a second magnetic suction member 107, which corresponds to the first magnetic suction member 104. The inner side of the cover plate 105 is provided with a sponge pad 108, which abuts against the surface of the battery module 3. The surface of the cover plate 105 is provided with a handle 109.
[0050] The positioning posts 106 at the four corners of the inner side of the cover plate 105 are precisely inserted into the fixing posts 102 inside the battery slot 101. This four-corner positioning mechanism ensures that the cover plate 105 is accurately aligned with the front end of the door lock body 1 every time it is closed, completely eliminating the possibility of the cover plate 105 being skewed, misaligned, or improperly installed. The second magnetic attraction 107 on the positioning post 106 is directly opposite to and interacts with the first magnetic attraction 104 on the internal support member 103 of the fixing post 102. Utilizing the strong magnetic attraction, the cover plate 105 can automatically, quickly, and firmly adhere to the door lock body 1 when closed. This fixing method requires no screws, clips, or tools, achieving true "one-click closing," simplifying operation, improving efficiency, and ensuring that the cover plate 105 will not loosen or fall off due to vibration or accidental contact during door lock use.
[0051] The sponge pad 108, located inside the cover plate 105, presses tightly against the surface of the battery module 3 after the cover plate 105 is closed and magnetically engaged. The sponge pad 108 possesses excellent elasticity and energy absorption properties, effectively absorbing and buffering vibrations and impacts generated during door lock opening and closing, impacts, or daily use. This protects the internal battery module 3 (especially the cell and electrode connections) and the lifting assembly 2, significantly reducing the risk of poor contact, battery damage, or component loosening due to vibration, and extending the service life of critical components. Under pressure, the sponge pad 108 fills the gap between the cover plate 105 and the surface of the battery module 3, forming a physical barrier. This effectively prevents dust, moisture, and other contaminants from entering the battery compartment 101, protecting internal electrical connections and electronic components from contamination and corrosion, and improving the reliability and durability of the door lock in complex environments.
[0052] In this embodiment, a connecting piece 110 is provided at the top of the battery compartment 101, and the connecting piece 110 is electrically connected to the battery module 3. The connecting piece 110 is fixed to the top of the battery compartment 101. When the battery module 3 is pushed upward to a preset position by the lifting component 2 (such as the elastic element 202 + fixing plate 203), the electrodes of the battery module 3 automatically contact and conduct with the connecting piece 110. This design eliminates the need for users to manually adjust the battery direction or position, significantly reducing installation complexity, and is especially suitable for confined spaces or low-light scenarios. The elastic pressure of the lifting component 2 continuously presses the battery module 3 tightly against the connecting piece 110. Even if the door lock experiences slight displacement due to opening and closing vibrations, it can maintain a tight fit between the electrodes and the connecting piece 110, avoiding system failures caused by power outages or voltage fluctuations.
[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A smart door lock structure with a detachable battery module, characterized in that, include: A door lock body, wherein a battery slot is provided at the lower end of the door lock body, and the battery slot extends through the front end of the door lock body; A lifting assembly is disposed within the battery compartment and can be elastically raised or lowered along the length of the door lock body; A battery module is disposed in the battery slot and on the lifting assembly, so that it is lifted by the lifting assembly and electrically connected to the door lock body to supply power to the door lock body.
2. The smart door lock structure with a detachable battery module according to claim 1, characterized in that, The lifting components include: A fixing groove is provided at the bottom of the battery compartment; Two elastic elements are respectively disposed at both ends of the fixing groove and are respectively arranged along the length direction of the door lock body; A fixing plate is disposed on top of the two elastic members; A cushioning pad is disposed on top of the fixing plate.
3. The smart door lock structure with a detachable battery module according to claim 1, characterized in that, The battery compartment is provided with four fixing posts, which are respectively located at the corners of the battery compartment. The fixing posts are hollow inside and are arranged along the thickness direction of the battery compartment.
4. The smart door lock structure with a detachable battery module according to claim 3, characterized in that, The fixed column is provided with a support member, which is arranged along the length of the fixed column.
5. The smart door lock structure with a detachable battery module according to claim 4, characterized in that, The fixed column is also provided with a first magnetic attraction element, which is located on the support member.
6. The smart door lock structure with a detachable battery module according to claim 5, characterized in that, The end face of the battery compartment is provided with a cover plate, and the inner side of the cover plate is provided with four positioning posts. The positioning posts are respectively located at the corners of the cover plate, and the four positioning posts correspond to the four fixing posts respectively.
7. The smart door lock structure with a detachable battery module according to claim 6, characterized in that, The positioning post is also provided with a second magnetic attractor, which corresponds to the first magnetic attractor.
8. The smart door lock structure with a detachable battery module according to claim 6, characterized in that, The inner side of the cover plate is provided with a sponge pad, which abuts against the surface of the battery module.
9. The smart door lock structure with a detachable battery module according to claim 6, characterized in that, The cover plate has a handle on its surface.
10. The smart door lock structure with a detachable battery module according to claim 1, characterized in that, A connecting piece is provided at the top of the battery compartment, and the connecting piece is electrically connected to the battery module.