A smart door lock with convenient battery replacement

Abstract

The utility model discloses a convenient replacement battery's intelligent door lock belongs to intelligent door lock technical field. Including have indoor handle, lock core subassembly, outdoor handle, indoor handle installs in the inside of security door, lock core subassembly installs in security door inside, outdoor handle installs in the outside of security door, the surface of indoor handle has battery compartment, the surface of battery compartment covers has the storehouse lid, the surface of indoor handle is equipped with recessed cavity around the side of battery compartment, the storehouse lid rotation is installed in recessed cavity, the both sides of recessed cavity all are equipped with the clamping slot, the inner wall rotation of battery compartment is connected with the connecting strip, and the one side of connecting strip is installed with the clamping block in the top end close place, and the clamping block and clamping slot are connected, and the other side of connecting strip is installed with the button in the bottom close place, and the both sides of storehouse lid all are equipped with the slot, and the button slides in the slot.

Description

Technical Field

[0001] This utility model relates to the field of smart door lock technology, specifically to a smart door lock with convenient battery replacement. Background Technology

[0002] With the rapid development of the smart home industry, smart door locks, as core devices for home security and convenient access, have been widely used in residences, apartments, offices, and other settings. Compared to traditional mechanical door locks, smart door locks integrate functions such as biometric identification, password verification, and remote control. They eliminate the need for physical keys, using electronic actuation to open and close the lock, greatly improving convenience and security, and becoming an important part of modern home life.

[0003] The stable operation of smart locks relies on the power provided by their built-in batteries. When the battery is depleted, it needs to be replaced promptly to restore the lock's functionality. Therefore, the ease and security of battery replacement directly impact the user experience. Currently, most mainstream smart locks on the market have their battery compartments located inside the lock. The battery compartment is sealed and secured primarily through a snap-on battery cover. These covers are typically made of rigid ABS plastic, with 1 to 3 raised snaps along the edge of the cover. These snaps correspond to grooves on the battery compartment housing. By aligning the raised snaps with the grooves and applying pressure, the protrusions snap into the grooves, securing the battery cover. To remove the cover, one must use their hand or a tool to pry open the edge of the cover, disengaging the protrusions from the grooves, and then remove the cover to replace the battery.

[0004] However, this snap-fit ​​fixing method has the following drawbacks: To ensure the battery compartment cover's sealing and anti-loosening effect, the fit between the protrusion and the groove is usually designed to be extremely small, resulting in an overly tight fit. During actual battery replacement, users need to apply considerable external force to pry off the cover or press it down forcefully when closing it, which can easily cause the hard plastic protrusion to break due to concentrated force. Once the protrusion breaks, the battery compartment cover cannot be effectively secured, leading not only to poor battery contact and unstable power supply to the lock, but also potentially allowing dust and moisture to enter the battery compartment, damaging the lock's circuit components and shortening the smart lock's lifespan. Furthermore, repeated disassembly further reduces the precision of the fit between the snap and the groove, increasing the risk of protrusion breakage and incurring additional costs for users due to frequent lock repairs or replacements.

[0005] Therefore, in response to the problem that the existing smart door lock's snap-on battery compartment cover is prone to breakage due to excessive tightness, there is an urgent need to design a battery compartment cover structure that does not rely on hard plastic snap-on clips, is convenient to operate when replacing batteries, and is not easily damaged, so as to improve the convenience of battery replacement and the durability of smart door locks. Utility Model Content

[0006] The purpose of this invention is to provide a smart door lock with convenient battery replacement, so as to solve the problems mentioned in the background art.

[0007] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0008] A smart door lock with easy battery replacement includes an interior handle, a lock cylinder assembly, and an exterior handle. The interior handle is installed on the inside of a security door, the lock cylinder assembly is installed inside the security door, and the exterior handle is installed on the outside of the security door. The surface of the interior handle has a battery compartment covered by a cover. A recessed cavity is formed around the side of the battery compartment on the surface of the interior handle. The cover is rotatably installed within the recessed cavity. Slots are formed on both sides of the recessed cavity. Connecting strips are rotatably connected to both sides of the inner wall of the battery compartment. A locking block is installed near the top of one side of each connecting strip, and the locking block engages with a slot. A button is installed near the bottom of the other side of the connecting strip. Grooves are formed on both sides of the cover. The button slides within the slot, and the indoor handle provides a mounting platform for the battery compartment, which houses the battery to power the door lock. The compartment cover, in conjunction with the recessed cavity, seals and protects the battery compartment, preventing dust and moisture from entering. The cover rotates within the recessed cavity, eliminating the need for prying compared to traditional snap-on covers, thus reducing the risk of damage. The locking block on the connecting strip engages with the slot in the recessed cavity, securing the cover and preventing it from opening arbitrarily. The button on the connecting strip engages with the slot in the cover; pressing the button rotates the connecting strip, disengaging the locking block and opening the cover. The entire process requires minimal external force, preventing breakage due to over-tightening and extending the lifespan of the cover and related components. It is also convenient and enhances the user's battery replacement experience.

[0009] Furthermore, both sides of the recessed cavity are rotatably connected to a pivot near their bottom ends. The inner side of the compartment cover is connected to the pivot, and the connection point is close to the bottom surface of the compartment cover. The pivot on both sides of the recessed cavity is connected to the inner side of the compartment cover, providing a stable rotation support point for the compartment cover and ensuring smooth rotation without jamming. The connection point is close to the bottom surface of the compartment cover, so that when the compartment cover rotates around the pivot, its top can open naturally, which conforms to the user's operating habits and makes it convenient for the user to open the compartment cover to take out and put in the battery. At the same time, this connection method can prevent the compartment cover from shifting or falling off during rotation, improving the stability and reliability of the compartment cover.

[0010] Furthermore, both sides of the inner wall of the compartment cover are rotatably connected to a connecting shaft via a torsion spring. A connecting block is installed at the center of the side of the connecting strip. The connecting block is installed on the outside of the connecting shaft, and the connecting block is on the same side as the button. The connecting shaft on the inner wall of the compartment cover cooperates with the connecting block of the connecting strip to provide a rotation mounting point for the connecting strip, allowing the connecting strip to rotate stably. The torsion spring cooperates with the connecting shaft and can generate a restoring force on the connecting strip in its natural state, ensuring that the locking block can be stably locked into the slot and preventing the compartment cover from loosening. The connecting block is on the same side as the button, so that when the button is pressed, it can drive the connecting strip to rotate around the connecting shaft, causing the locking block to disengage from the slot.

[0011] Furthermore, when the torsion spring is in its natural state, the locking block engages with the slot. The torsion spring, in its natural state, engages the locking block with the slot, thus securing the compartment cover without the need for additional external force. This ensures that the compartment cover will not open arbitrarily when not in operation, preventing poor contact of the batteries inside the battery compartment due to a loose cover. At the same time, the stable elastic force provided by the torsion spring ensures that the locking force between the locking block and the slot is moderate, guaranteeing the fixing effect while avoiding excessive force that would make pressing the button difficult or damage the components due to excessive stress. This balances the reliability of the fixing with the ease of operation.

[0012] Furthermore, a sealing strip is adhered to the inside of the battery compartment cover, and the cover is interference-fitted with the recessed cavity through the sealing strip. The interference fit between the sealing strip inside the cover and the recessed cavity can fill the gap between the cover and the recessed cavity, forming a good sealing effect. This prevents external dust and moisture from entering the battery compartment through the gap, avoiding short circuits caused by moisture or dust accumulation affecting battery contact, and protecting the battery and the internal circuit components of the door lock. At the same time, the friction generated by the interference fit can help fix the cover, enhancing its stability. Even if there is slight wear between the locking block and the locking groove, the cover can still be prevented from loosening, extending the overall service life of the door lock.

[0013] Furthermore, the button is wrapped with an anti-slip silicone sleeve. The outer surface of the anti-slip silicone sleeve has a diamond-shaped anti-slip texture. The anti-slip silicone sleeve on the outside of the button can increase the friction between the finger and the button, prevent the finger from slipping when pressing, and ensure that the user can apply a stable pressing force. The silicone sleeve is soft, which can improve the feel when pressing and reduce the discomfort when pressing the finger. The diamond-shaped anti-slip texture on the outer surface further enhances the anti-slip effect. Even if the finger is wet or oily, it can still effectively prevent slipping, ensuring that the user can press the button smoothly to open the compartment cover in various hand positions, improving the reliability and comfort of operation.

[0014] Furthermore, the inner wall of the slot is provided with a wear-resistant coating made of polytetrafluoroethylene (PTFE). The PTFE wear-resistant coating on the inner wall of the slot can reduce friction and wear between the button and the inner wall of the slot when the button slides in the slot, extending the service life of the button and the cover. PTFE has good lubricity, which can reduce the resistance when the button slides, making the button pressing and resetting process smoother and avoiding button jamming due to excessive frictional resistance, thus affecting the user experience. At the same time, PTFE is corrosion-resistant and high-temperature resistant, and can adapt to different usage environments, ensuring that the wear-resistant coating is effective for a long time and will not fail due to environmental factors.

[0015] Compared with existing technologies, the advantages of this invention are as follows: This smart door lock, which facilitates battery replacement, features a battery compartment cover that is rotatably mounted in a recessed cavity via a pivot. Combined with the engaging structure of the connecting strip, locking block, and button, opening the cover only requires pressing the button to disengage the locking block from its slot, eliminating the need for prying. When closing, the locking block automatically engages with the slot under the action of a torsion spring, requiring no force and avoiding the problem of traditional latches breaking due to excessive force. Secondly, the sealing strip inside the cover has an interference fit with the recessed cavity. Even with slight wear on the engaging structure, the cover can still be secured through sealing and friction, preventing poor battery contact and blocking dust and moisture from entering the battery compartment, protecting the circuit components. Furthermore, the anti-slip silicone sleeve on the button and the grooved wear-resistant coating ensure smooth operation and extend the service life of the components. Through the synergistic effect of these components, the problem of easy damage to traditional latch-type battery compartment covers leading to door lock malfunctions is solved, improving the convenience of battery replacement, extending the lifespan of the door lock, and ensuring long-term stable operation. Attached Figure Description

[0016] Figure 1 This is a first three-dimensional structural diagram of a smart door lock with convenient battery replacement disclosed in an embodiment of the present utility model.

[0017] Figure 2 This is a second three-dimensional structural diagram of a smart door lock with convenient battery replacement disclosed in an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of structure A in the middle;

[0019] Figure 4 This is a third perspective structural diagram of a smart door lock with convenient battery replacement disclosed in an embodiment of the present utility model;

[0020] Figure 5 for Figure 4 A magnified schematic diagram of the B-structure.

[0021] In the diagram: 1. Indoor handle; 2. Lock cylinder assembly; 3. Outdoor handle; 4. Cover; 5. Battery compartment; 6. Shaft; 7. Recessed cavity; 8. Slot; 9. Button; 10. Connecting strip; 11. Connecting block; 12. Locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a smart door lock with convenient battery replacement, including an indoor handle 1, a lock cylinder assembly 2, and an outdoor handle 3. The indoor handle 1 is installed on the inside of the security door, the lock cylinder assembly 2 is installed inside the security door, and the outdoor handle 3 is installed on the outside of the security door. The surface of the indoor handle 1 has a battery compartment 5, and the surface of the battery compartment 5 is covered by a compartment cover 4. The surface of the indoor handle 1 has a recessed cavity 7 around the side of the battery compartment 5. The compartment cover 4 is rotatably installed in the recessed cavity 7. The recessed cavity 7 has slots 8 on both sides. The inner wall of the battery compartment 5 is rotatably connected to both sides of the battery compartment 5. A locking block 12 is installed on one side of the connecting strip 10 near its top, and the locking block 12 and the slot 8 are engaged. A button 9 is installed on the other side of the connecting strip 10 near its bottom. The compartment cover 4 has slots on both sides. Button 9 slides within the slot. When the battery needs to be replaced, first press button 9 in the slots on both sides of the cover 4. After the button 9 is pressed, it drives the connecting strip 10 connected to it to rotate around the rotation point of the inner wall of the battery compartment 5. During the rotation of the connecting strip 10, the locking block 12 at its top moves accordingly and gradually disengages from the locking grooves 8 on both sides of the recessed cavity 7. After the locking block 12 is completely disengaged from the locking groove 8, the cover 4 loses its fixing force. Then push the cover 4 to rotate around its rotation point in the recessed cavity 7 to open it, thus exposing the battery compartment 5 for battery replacement. After replacing the battery, first rotate the cover 4 around the rotation point to cover the battery compartment 5. At this time, the connecting strip 10 drives the locking block 12 to move towards the locking groove 8 under its own structural reset action until the locking block 12 re-engages in the locking groove 8, completing the fixing of the cover 4 and achieving the sealing protection of the battery compartment 5.

[0024] Specifically, the indoor handle 1, lock cylinder assembly 2, and outdoor handle 3 are linked together through a mechanical transmission structure and circuit connection: Mechanically, the rotating shafts of both the indoor handle 1 and the outdoor handle 3 pass through the security door and are connected to the transmission components inside the lock cylinder assembly 2. When the indoor or outdoor handle is rotated or pressed, the bolt inside the lock cylinder assembly 2 can be extended or retracted through the transmission components to open and close the door; Electrically, the outdoor handle 3 integrates intelligent recognition components such as a fingerprint recognition module, a password button, and a card swipe sensing area. These components are connected to the control circuit board inside the lock cylinder assembly 2 through wires. The control circuit board is then connected to the battery in the battery compartment 5 of the indoor handle 1 to form a complete power supply and control circuit.

[0025] As an embodiment of this utility model, further, both sides of the recessed cavity 7 are rotatably connected to a rotating shaft 6 near its bottom end. The inner side of the compartment cover 4 is connected to the rotating shaft 6, and the connection point is close to the bottom surface of the compartment cover 4. When the button 9 is pressed to disengage the locking block 12 from the slot 8, since the inner side of the compartment cover 4 is connected to the rotating shaft 6 of the recessed cavity 7, and the connection point is close to the bottom surface of the compartment cover 4, the user can push the top of the compartment cover 4, and the compartment cover 4 will rotate around the rotating shaft 6. As the rotation angle increases, the compartment cover 4 gradually opens, revealing the battery compartment 5. After replacing the battery, the user presses down on the top of the compartment cover 4, and the compartment cover 4 rotates in the opposite direction around the rotating shaft 6 again until the compartment cover 4 completely covers the battery compartment 5. At this time, the locking block 12 is locked into the slot 8 to complete the fixation. Throughout the rotation process, the rotating shaft 6 always provides stable support for the compartment cover 4 to ensure smooth rotation.

[0026] As an embodiment of this utility model, further, both sides of the inner wall of the compartment cover 4 are rotatably connected to a connecting shaft via a torsion spring. A connecting block 11 is installed at the center of the side of the connecting strip 10. The connecting block 11 is installed on the outside of the connecting shaft, and the connecting block 11 is on the same side as the button 9. In the natural state, the torsion spring on the connecting shaft on the inner wall of the compartment cover 4 is in its original state. The elastic force of the torsion spring is transmitted to the connecting block 11 of the connecting strip 10 through the connecting shaft, so that the connecting strip 10 maintains a specific angle, thereby allowing the locking block 12 at the top of the connecting strip 10 to stably engage with the locking mechanism of the recessed cavity 7. The slot 8 secures the compartment cover 4. When the compartment cover 4 needs to be opened, press the button 9. Since the connecting block 11 is on the same side as the button 9, the button 9 is forced to rotate the connecting bar 10 around the connecting shaft. At this time, the connecting block 11 compresses the torsion spring, causing the torsion spring to deform and store elastic potential energy. The rotation of the connecting bar 10 causes the locking block 12 to disengage from the slot 8. After releasing the button 9, the torsion spring releases its elastic potential energy, pushing the connecting block 11 to rotate the connecting bar 10 in the opposite direction to reset it. This allows the locking block 12 to regain the tendency to lock into the slot 8, making it easier to quickly secure the compartment cover 4 when it is closed.

[0027] Specifically, the torsion spring torque is set to 5-8 N·cm. In conjunction with the connecting strip 10, the locking block 12, and the button 9, it can ensure the reliable engagement of the locking block 12 and the locking slot 8 through stable torque, prevent the cover 4 from loosening, and ensure the sealing of the battery compartment 5. It can also control the force of the user pressing the button 9 within a comfortable range, avoiding damage to the components due to excessive force. At the same time, it can be easily operated without the aid of tools, further optimizing the convenience of battery replacement and solving the problem of damage to components caused by the need to pry open the traditional snap-on cover due to excessive tightness.

[0028] As an embodiment of this utility model, the locking block 12 engages with the locking groove 8 when the torsion spring is in its natural state. When the torsion spring is in its natural state, its elastic force is transmitted to the connecting bar 10 through the connecting shaft and the connecting block 11, causing the connecting bar 10 to rotate around the connecting shaft to a specific position. At this time, the locking block 12 at the top of the connecting bar 10 is aligned with the locking groove 8 of the recessed cavity 7 and is locked into the locking groove 8 under the action of the torsion spring, thus fixing the compartment cover 4. When the button 9 is pressed to drive the connecting bar 10 to rotate, the connecting bar 10 overcomes the torsion spring's elastic force, causing the locking block 12 to disengage from the locking groove 8. When the button 9 is released, the torsion spring returns to its natural state, and the elastic force pushes the connecting bar 10 to rotate again, causing the locking block 12 to re-engage into the locking groove 8, ensuring that the locking block 12 automatically engages with the locking groove 8 under the action of the torsion spring after each closing of the compartment cover 4, without the need for manual adjustment.

[0029] As an embodiment of this utility model, a sealing strip is further adhered inside the compartment cover 4, and the compartment cover 4 is interference-fitted with the recessed cavity 7 through the sealing strip. When the compartment cover 4 is closed and fixed to the slot 8 by the locking block 12, the sealing strip inside the compartment cover 4 is squeezed by the compartment cover 4 and the recessed cavity 7. Since the two are interference-fitted, the sealing strip will undergo elastic deformation and tightly fill the gap between the compartment cover 4 and the recessed cavity 7, forming a sealing barrier to prevent dust and moisture from entering the battery compartment 5 from the gap. When opening the compartment cover 4, a certain force needs to be applied to overcome the friction between the sealing strip and the recessed cavity 7. This friction ensures that the compartment cover 4 will not open on its own due to slight vibration when not actively operated. During the process of closing the compartment cover 4, as the compartment cover 4 gradually approaches the recessed cavity 7, the sealing strip is gradually squeezed and deformed until the compartment cover 4 is completely closed, and the sealing strip achieves a complete seal.

[0030] As an embodiment of this utility model, the outer side of the button 9 is further wrapped with an anti-slip silicone sleeve. The outer surface of the anti-slip silicone sleeve is provided with a diamond-shaped anti-slip texture. When the user needs to press the button 9, the finger contacts the anti-slip silicone sleeve on the outside of the button 9. The soft material of the silicone sleeve conforms to the finger, improving the pressing comfort. Since the outer surface of the silicone sleeve is provided with a diamond-shaped anti-slip texture, the texture increases the contact friction between the finger and the silicone sleeve. Even if the finger surface is wet or oily, it can effectively prevent the finger from slipping during the pressing process. When the user applies pressing pressure, the anti-slip texture ensures that the force can be stably transmitted to the button 9, so that the button 9 can smoothly drive the connecting strip 10 to rotate, avoiding insufficient pressing pressure due to slippage, which would prevent the locking block 12 from quickly disengaging from the slot 8.

[0031] As an embodiment of this utility model, the inner wall of the slot is further provided with a wear-resistant coating made of polytetrafluoroethylene. During the pressing of button 9, button 9 will slide in the slot of the cover 4. At this time, button 9 contacts the inner wall of the slot and generates friction. Since the inner wall of the slot is provided with a polytetrafluoroethylene wear-resistant coating, the wear-resistant properties of the coating can reduce the wear on the inner wall of the slot when button 9 slides. At the same time, its lubricity greatly reduces the frictional resistance between button 9 and the inner wall, allowing button 9 to slide smoothly and avoid jamming. When button 9 resets, it can also return to the initial position quickly and smoothly under the action of the wear-resistant coating, ensuring that each operation can be performed stably. After long-term use, the inner wall of the slot can still maintain a good condition and will not cause button 9 to slide poorly due to wear.

[0032] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A smart door lock with easily replaceable batteries, characterized in that, The device includes an indoor handle (1), a lock cylinder assembly (2), and an outdoor handle (3). The indoor handle (1) is installed on the inside of the security door, the lock cylinder assembly (2) is installed inside the security door, and the outdoor handle (3) is installed on the outside of the security door. The surface of the indoor handle (1) has a battery compartment (5), and the surface of the battery compartment (5) is covered with a cover (4). The surface of the indoor handle (1) has a recessed cavity (7) around the side of the battery compartment (5). The cover (4) is rotatably installed in the recessed cavity (7). The recessed cavity (7) has slots (8) on both sides. The inner walls of the battery compartment (5) are rotatably connected to connecting strips (10). One side of the connecting strip (10) has a locking block (12) installed near its top. The locking block (12) and the slot (8) are engaged. The other side of the connecting strip (10) has a button (9) installed near its bottom. The cover (4) has slots on both sides. The button (9) slides in the slots.

2. The smart door lock with convenient battery replacement according to claim 1, characterized in that, The recessed cavity (7) is rotatably connected to a rotating shaft (6) on both sides near its bottom end. The inner side of the cover (4) is connected to the rotating shaft (6), and the connection is close to the bottom surface of the cover (4).

3. The smart door lock with convenient battery replacement according to claim 1, characterized in that, The inner walls of the cover (4) are connected to the connecting shafts by torsion springs on both sides. A connecting block (11) is installed at the center of the side of the connecting strip (10). The connecting block (11) is installed on the outside of the connecting shaft. The connecting block (11) and the button (9) are on the same side.

4. A smart door lock with convenient battery replacement according to claim 3, characterized in that, The locking block (12) engages with the locking slot (8) when the torsion spring is in its natural state.

5. A smart door lock with easily replaceable batteries according to claim 1, characterized in that, The inside of the compartment cover (4) is covered with a sealing strip, and the compartment cover (4) is press-fitted with the recessed cavity (7) through the sealing strip.

6. A smart door lock with convenient battery replacement according to claim 1, characterized in that, The button (9) is wrapped with an anti-slip silicone sleeve, and the outer surface of the anti-slip silicone sleeve is provided with a diamond-shaped anti-slip texture.

7. A smart door lock with convenient battery replacement according to claim 1, characterized in that, The inner wall of the groove is provided with a wear-resistant coating, which is made of polytetrafluoroethylene.

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