An electromechanically decoupled intelligent lock body

Abstract

The application relates to an electromechanically separated intelligent lock body, which comprises a shell, the shell comprises a rear cover, a lock bolt capable of extending / contracting relative to the shell is arranged in the shell, the lock bolt comprises a lock bolt head and a lock bolt rod, a rotary knob part is rotatably connected to the shell, the rotary knob part comprises a dial block, the dial block abuts on the lock bolt rod to drive the lock bolt rod to extend / contract relative to the shell, a motor and a large gear wheel driven to rotate by the motor are further arranged in the shell, the large gear wheel is separated from the rotary knob part and can rotate relative to the rotary knob part, the large gear wheel is arranged on the outer periphery of the rotary knob part, and the large gear wheel can abut on the dial block after rotating to drive the lock bolt rod to extend / contract relative to the shell. The large gear wheel is separated from the rotary knob part and can rotate relative to the rotary knob part in the structural design, the direct force transmission path of the rotary knob part and the motor during manual operation is cut off, when a user manually rotates the rotary knob part to drive the lock bolt to act, the motor resistance does not need to be overcome, the required force for unlocking is reduced, and the problem that manual unlocking of a traditional lock body is laborious is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, specifically to an electromechanical-separated smart lock body. Background Technology

[0002] Smart locks have now largely replaced traditional mechanical locks and become the mainstream choice for home security. The inner lock body installed on the inside of the door must not only meet the requirements of electronic automatic unlocking, but also support manual emergency unlocking by the user. This requires the lock body to have both electromechanical and mechanical drive functions.

[0003] However, most existing internal lock bodies use a coupled electromechanical drive structure, where the knob is directly connected to the motor transmission components. When the user manually turns the knob to unlock, the force is directly transmitted to the motor. On the one hand, this means that unlocking requires overcoming the motor's resistance, making operation laborious and affecting the user experience. On the other hand, long-term direct external force can damage the internal structure of the motor, such as wearing down the motor gears, affecting the motor's lifespan, and in severe cases, causing the motor to fail and the smart lock to lose its electronic drive function.

[0004] Some existing technologies attempt to alleviate the problem by optimizing the feel of the knob or strengthening the protection of the motor. However, these solutions do not structurally sever the direct force transmission path between the knob and the motor. They can only slightly improve the operating force or delay motor damage. They cannot fundamentally solve the two core technical problems of difficult unlocking and easy motor damage, and still have obvious limitations.

[0005] Therefore, overcoming the aforementioned shortcomings has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0006] This invention overcomes the shortcomings of the above-mentioned technologies and provides an intelligent lock body with electromechanical separation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An electromechanically separated smart lock body includes a housing, the housing including a back cover, a bolt that can extend / retract relative to the housing is provided inside the housing, the bolt including a latch tongue and a bolt rod, a knob rotatably connected to the housing, the knob including a lever, the lever abutting against the bolt rod to drive the bolt rod to extend / retract relative to the housing, a motor and a large gear driven by the motor are also provided inside the housing, the large gear is separate from the knob and can rotate relative to the knob, the large gear is disposed on the outer periphery of the knob, and after the large gear rotates, it abuts against the lever to drive the bolt rod to extend / retract relative to the housing.

[0008] Furthermore, the housing is also equipped with an auxiliary mechanism that facilitates the rapid and automatic extension / retraction of the latch into the housing.

[0009] Furthermore, the auxiliary mechanism includes a torsion spring, one end of which is connected to the lever block by a first screw and the other end of which is connected to the housing by a second screw.

[0010] Furthermore, a limiting hole is provided on the locking tongue rod, and a limiting pin located in the limiting hole is installed inside the housing.

[0011] Furthermore, a slide rail is installed inside the housing, and the lower end of the locking tongue rod is slidably connected to the slide rail.

[0012] Furthermore, the locking tongue rod is provided with a toggle groove for the toggle block to be engaged, and the toggle groove includes toggle parts arranged symmetrically at the top and bottom.

[0013] Furthermore, the large gear includes an arc-shaped toothed portion and symmetrically arranged deflector walls at both ends of the toothed portion. When the large gear rotates, the deflector walls on both sides can respectively abut against the upper and lower ends of the deflector block, thereby driving the knob to rotate. The toothed portion includes a number of equidistantly arranged teeth.

[0014] Furthermore, a convex shaft is provided on the large gear, and a circuit board is also installed inside the housing. The circuit board is provided with a first Hall sensor for cooperating with the convex shaft to sense the rotation position of the large gear.

[0015] Furthermore, the latch rod is provided with a protrusion, and the circuit board is also provided with a second Hall sensor for cooperating with the protrusion to sense the extension / retraction of the latch.

[0016] Furthermore, a one-button lock / unlock button and a normally open / normally closed button are installed on the outside of the housing. The rear end of the knob protrudes from the housing and is connected to the knob. The outside of the knob is provided with anti-slip texture.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This design utilizes a structural design that separates the large gear from the knob, allowing them to rotate relative to each other. This eliminates the direct force transmission path between the knob and the motor during manual operation. When the user manually rotates the knob to drive the bolt, there is no need to overcome motor resistance, significantly reducing the force required to unlock. This effectively solves the problem of laborious manual unlocking in traditional locks, significantly improving ease of use and user experience. This separate structure prevents external force from directly acting on the motor during manual operation, preventing wear on the internal gears or structural damage. This significantly extends the lifespan of the motor and the overall lock body, reducing the probability of lock failure and maintenance costs. Simultaneously, it ensures the independent reliability of both manual and electric dual-drive modes. In manual mode, the bolt is directly driven by the knob, while in electric mode, the bolt is indirectly driven by the motor, pinion, and large gear. The two modes do not interfere with each other, ensuring stable locking / unlocking functionality in both power-off and power-on scenarios, meeting diverse usage needs. Attached Figure Description

[0018] Figure 1 This is an exploded view of the overall structure of the smart lock in this case.

[0019] Figure 2 This is a structural diagram showing the back cover and circuit board of the smart lock body in this case.

[0020] Figure 3 This is a schematic diagram of the structure of the large gear in this case.

[0021] Figure 4 This is a schematic diagram of the circuit board in this case.

[0022] Figure 5 This is a 3D view of the smart lock body in this case. Detailed Implementation

[0023] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art: Smart exterior door locks, also known as backpack locks, generally consist of two parts: an inner lock body and an outer lock body. This case involves an inner smart lock body installed on the inside of the door.

[0024] like Figures 1 to 5As shown, this invention provides an electromechanically separated smart lock body, including a housing 100 and a rear cover 200. The housing 100 serves as the external frame of the lock body, containing the mountable rear cover 200 to form a closed internal space, providing mounting support and protection for internal components, ensuring the stability of the internal components, and preventing dust and moisture intrusion. In specific implementation, glue is applied between the housing 100 and the rear cover 200 to achieve good waterproofing. A latch 1 that can extend / retract relative to the housing 100 is provided inside the housing 100, wherein the latch 1 includes a latch tongue 11 and a latch rod 12. A knob 2 is rotatably connected to the housing 100, the knob 2 including a lever 21, which abuts against the latch rod 12 to drive the latch rod 12 to extend / retract relative to the housing 100. When the user rotates the knob 2, the lever 21 rotates synchronously with it, pushing or pulling the latch 1 by abutting against the latch rod 12 to achieve manual unlocking / locking. Manual operation eliminates the need for a motor, directly driving the latch. The abutment structure of the lever 21 simplifies the force transmission path and reduces operational resistance. Within the housing 100, a motor 3 and a large gear 4 driven by the motor 3 are also present. The large gear 4 is separate from the knob 2 and can rotate relative to it. Located on the outer periphery of the knob 2, the large gear 4, upon rotation, abuts against the lever 21, thereby driving the latch rod 12 to extend / retract relative to the housing 100. Specifically, the motor 3 is connected to the large gear 4 via a small gear on the motor, thus driving the large gear 4 to rotate. When driven by the motor 3, the large gear 4 rotates and abuts against the lever 21, indirectly pushing the latch rod 12. When the knob 2 is manually rotated, the large gear 4 does not rotate with it, cutting off the force transmission from the knob to the motor 3. This ensures the normal operation of the electric drive of the lock body, avoids damage to the motor 3 during manual operation, and reduces the manual unlocking force. This electromechanical separation smart lock body design effectively avoids the problems caused by the direct drive of the motor 3 by the knob in traditional locks. In actual use, the user only needs to gently turn the knob 2, and the toggle 21 will move accordingly, thereby driving the bolt 12 to extend or retract relative to the housing 100 to achieve the locking or unlocking operation. Due to the structural design of the large gear 4 being separate from and able to rotate relative to the knob 2, the rotation of the knob 2 does not directly act on the motor 3, thus greatly reducing the force required to unlock and making the operation more effortless. At the same time, this design also effectively protects the motor 3, avoiding potential damage caused by direct force and extending the service life of the lock.

[0025] like Figure 1 , Figure 2As shown, the housing 100 is further equipped with an auxiliary mechanism to facilitate the rapid and automatic extension / retraction of the bolt 1. In practice, through this auxiliary mechanism, when the knob 2 is rotated to a certain angle, the bolt 1 automatically extends and retracts. In electrically driven mode, this response is faster and more energy-efficient; in manually driven mode, it is also more labor-saving and convenient. The auxiliary mechanism significantly improves the ease of unlocking and locking for the user. In actual operation, the user does not need to continuously apply external force to fully extend or retract the bolt 1 from the housing 100. When the knob 2 is rotated to a specific angle, the auxiliary mechanism activates, automatically completing the extension or retraction of the bolt 1. This not only further reduces the user's operational burden, making the unlocking and locking process easier and faster, but also improves the smoothness and efficiency of the entire lock's use. Moreover, this automatic extension and retraction method reduces potential damage to the lock caused by improper human operation, ensuring the normal use and longer service life of the lock from another perspective.

[0026] Specifically, continue to refer to Figure 1 , Figure 2 As shown, the auxiliary mechanism includes a torsion spring 5. One end of the torsion spring 5 is connected to the lever 21 via a first screw 51, and the other end is connected to the housing 100 via a second screw 52. When the knob 2 starts to rotate, the torsion spring 5 deforms as the lever 21 moves, storing elastic potential energy. After the knob 2 rotates to a preset angle, the elastic potential energy stored in the torsion spring 5 is quickly released, pushing the lever 21 to move further, thereby causing the latch 1 to quickly and automatically extend or retract into the housing 100. This design cleverly utilizes the elastic characteristics of the torsion spring 5 to achieve automatic extension and retraction of the latch 1, with good stability. The elastic characteristics of the torsion spring 5 can replace some of the manual or motor power, reducing manual operation effort and motor energy consumption. The screw connection method is simple in structure, easy to disassemble and assemble, convenient for later maintenance and replacement, and has high connection stability, preventing the torsion spring 5 from falling off and causing the auxiliary mechanism to fail.

[0027] Reference Figure 1 , Figure 2As shown, a limiting hole 121 is further provided on the latch rod 12, and a limiting pin 101 located within the limiting hole 121 is also installed inside the housing 100. Through the combined action of the limiting hole 121 and the limiting pin 101, the travel of the latch rod 1 is limited. When the latch rod 12 extends or retracts relative to the housing 100, the limiting pin 101 moves relative to the limiting hole 121. When it reaches the edge of the limiting hole 121, it restricts the movement of the latch rod 12, preventing it from extending or retracting excessively and ensuring the stability of the latch rod 1's sliding motion. This limiting design structure can precisely control the range of motion of the latch rod 1, avoiding lock malfunctions or damage caused by the latch rod 1 moving beyond its reasonable range, further improving the reliability and security of the lock, and ensuring that the latch can stably and accurately complete the extension and retraction actions in various usage scenarios. In practice, a soft rubber sleeve is fitted onto the limiting pin 101 to achieve good impact resistance and noise reduction. This effectively buffers the impact force between the limiting pin 101 and the edge of the limiting hole 121 during frequent extension and retraction of the locking tongue rod 12, reducing noise caused by collisions. Simultaneously, the soft rubber sleeve prevents wear caused by direct contact between the limiting pin 101 and the limiting hole 121, extending the service life of both.

[0028] Continue to refer to Figure 1 , Figure 2 As shown, a slide rail 102 is further installed inside the housing 100, and the lower end of the latch rod 12 is slidably connected to the slide rail 102 to ensure the stability of the latch rod 1's movement. The slide rail 102 provides precise guidance for the latch rod 12, enabling it to maintain linear movement during extension and retraction, avoiding jamming or malfunctions caused by offset or shaking. This sliding connection method not only enhances the smoothness of the latch movement but also improves the overall structural strength of the lock, allowing the latch to remain accurate and reliable even during frequent use.

[0029] Continue to refer to Figure 1 , Figure 2As shown, a further feature is provided on the latch rod 12, with a paving groove 122 for the latching block 21 to engage. The paving groove 122 includes symmetrically arranged paving portions 1221. In specific implementation, the upper paving portion 1221 is used to drive the latch 1 to retract, and the upper paving portion 1221 is used to drive the latch 1 to extend. This structure allows the latching block 21 to accurately engage with the paving groove 122 during rotation, realizing the extension and retraction of the latch 1. The symmetrically arranged paving portions 1221 not only improve the accuracy of the paving but also make the movement of the latch 1 more stable and reliable. In actual operation, when the latching block 21 rotates to contact the upper paving portion 1221, it drives the latch 1 to extend out of the housing 100; and when the latching block 21 rotates to contact the lower paving portion 1221, it drives the latch 1 to retract into the housing 100. The actuating groove 122 effectively allows the lever 21 to engage and limits its travel when the lever 21 rotates, preventing it from dislodging from the actuating groove 122. It also effectively prevents the bolt 1 from shifting or jamming during movement, ensuring the stability and reliability of the lock. The symmetrically arranged actuating parts 1221 further optimize the locking and unlocking process, ensuring the consistency and stability of the locking and unlocking travel.

[0030] Furthermore, such as Figures 1-3As shown, the large gear 4 in this case includes an arc-shaped toothed portion 41 and symmetrically arranged deflector walls 42 at both ends of the toothed portion 41. The toothed portion 41 includes several equidistantly arranged teeth 411. In practice, the teeth 411 of the toothed portion 41 are always engaged with the gear of the motor 3, thus receiving the power transmitted by the motor 3 and rotating. When the large gear 4 rotates, the deflector walls 42 on both sides can respectively abut against the upper and lower ends of the deflector block 21, thereby driving the knob 2 to rotate. The symmetrically arranged deflector walls 42 ensure that the large gear 4 can stably drive the deflector block 21 in both forward and reverse directions, achieving reliable bidirectional transmission for unlocking / locking, while ensuring consistency of stroke and guaranteeing the stability of the lock. In practice, the upper deflector wall 42 is used to drive the bolt 1 to retract, and the lower deflector wall 42 is used to drive the bolt 1 to extend. The structure of the lever wall 42 ensures that the large gear 4 can accurately contact the upper and lower ends of the lever block 21 through the lever wall 42 during rotation, thereby achieving stable drive and rotation of the knob 2. This structure makes the large gear 4 more reliable in transmitting power, avoiding abnormal movement of the latch 1 due to unstable power transmission. When the motor 3 drives the large gear 4 to rotate, the tight meshing of the gear teeth 41 with the motor gear ensures effective power transmission, while the cooperation between the lever wall 42 and the lever block 21 further converts the power into the extension or retraction of the latch 1. This design not only improves the working efficiency of the lock, but also enhances the stability and durability of the lock during long-term use. At the same time, the equidistantly spaced gear teeth also make the force on the large gear more even during rotation, reducing wear and malfunctions that may be caused by uneven force, and further extending the service life of the lock.

[0031] Reference Figures 1-4 As shown, a convex shaft 43 is further provided on the large gear 4, and a circuit board 6 is also installed inside the housing 100. The circuit board 6 is equipped with a first Hall sensor 61 that cooperates with the convex shaft 43 to sense the rotation position of the large gear 4. It should be noted that in this smart lock, the large gear 4 automatically returns to its initial position after completing the unlocking and unlocking actions, facilitating the next operation. The first Hall sensor 51 is designed to accurately sense the rotation position of the large gear 4. When the large gear 4 rotates to a specific position, the convex shaft 43 triggers the first Hall sensor 51, which transmits a signal to the circuit board 6. The circuit board 6 determines whether the large gear 4 has rotated to the correct position based on the received signal. This precise sensing mechanism ensures that the large gear 4 can accurately return to its initial position during the unlocking and locking processes of this smart lock, preparing for the next operation. At the same time, this design also effectively avoids interference with the knob 2 caused by the positional deviation of the large gear 4, further ensuring the stability and reliability of the electromechanical separation design. In practice, circuit board 6 includes a WIFI module, which supports remote control of unlocking and locking via mobile phone.

[0032] Continue to refer to Figures 1-4 As shown, a protrusion 123 is further provided on the latch rod 12, and a second Hall sensor 62 is also provided on the circuit board 6 to cooperate with the protrusion 123 to sense the extension / retraction of the latch 1. The setting of the second Hall sensor 62 further ensures the accuracy and stability of the extension and retraction of the latch 1. When the latch rod 12 extends or retracts to a specific position relative to the housing 100, the protrusion 123 on the latch rod 12 will trigger the second Hall sensor 62, which will quickly transmit the sensing signal to the circuit board 6. After receiving the signal, the circuit board 6 can accurately determine whether the latch 1 has been extended or retracted. This structure makes the perception of the state of the latch 1 more accurate and reliable during operation of the smart lock body. In practical applications, whether the latch 1 is fully retracted when unlocking or fully extended when locking, the second Hall sensor 62 can promptly provide status information to ensure that the latch 1 is accurately extended or retracted, avoiding potential safety hazards and malfunctions caused by the latch 1 not being in position. For example, in the locked state, if the bolt 1 is not fully retracted, the second Hall sensor 62 will transmit this information to the circuit board 6, and the circuit board 6 will issue a prompt signal to remind the user that the smart lock body is not properly locked, thereby ensuring the security of the usage scenario.

[0033] Furthermore, referring to Figure 1 , Figure 5 As shown, a one-touch lock / unlock button 7 and a normally open / normally closed button 8 are installed on the outside of the housing 100. In practice, the user can quickly lock and unlock the smart lock by pressing the one-touch lock / unlock button 7, making operation convenient and quick. The normally open / normally closed button 8 allows the user to keep the bolt 1 in either an extended locked state or a retracted unlocked state in different scenarios. This design fully considers the user's needs in various situations. For example, in situations where the door lock needs to be kept locked for an extended period, the user only needs to press the normally open / normally closed button 8 to select the locking mode, and the bolt 1 will remain extended without continuous manual operation, greatly improving ease of use. In scenarios where frequent entry and exit are required and the door lock does not need to lock automatically, the user can select the unlocking mode to keep the bolt 1 retracted. The combination of the one-touch lock / unlock button 7 and the normally open / normally closed button 8 provides users with flexible and diverse locking and unlocking methods, meeting diverse usage needs.

[0034] Specifically, the rear end of the knob 2 extends out of the housing 100 and connects to the knob 9, allowing the user to manually lock and unlock the knob by rotating the knob 9 from the outside. Furthermore, anti-slip texture 91 is provided on the outer side of the knob 9. The anti-slip texture 91 makes it easier for the user to rotate the knob 9, increasing the friction between the hand and the knob 9, ensuring easy and stable rotation even when hands are wet or oily.

[0035] As stated above, this case protects a smart lock body with electromechanical separation, and all technical solutions that are the same as or similar to this case should be considered to fall within the protection scope of this case.

Claims

1. An electromechanically separated smart lock body, comprising a housing (100), the housing (100) including a rear cover (200), and a latch (1) that can extend / retract relative to the housing (100) is provided inside the housing (100), the latch (1) including a latch tongue (11) and a latch rod (12), characterized in that: A knob (2) is rotatably connected to the housing (100). The knob (2) includes a lever (21), which abuts against the latch rod (12) to drive the latch rod (12) to extend / retract relative to the housing (100). The housing (100) is also provided with a motor (3) and a large gear (4) driven by the motor (3). The large gear (4) is separate from the knob (2) and can rotate relative to the knob (2). The large gear (4) is located on the outer periphery of the knob (2). After the large gear (4) rotates, it abuts against the lever (21) to drive the latch rod (12) to extend / retract relative to the housing (100).

2. The electromechanical separation intelligent lock body according to claim 1, characterized in that: The housing (100) is also equipped with an auxiliary mechanism that facilitates the rapid and automatic extension / retraction of the latch (1) into the housing (100).

3. The electromechanical separation intelligent lock body according to claim 2, characterized in that: The auxiliary mechanism includes a torsion spring (5), one end of which is connected to the lever (21) by a first screw (51) and the other end is connected to the housing (100) by a second screw (52).

4. The electromechanical separation intelligent lock body according to claim 1, characterized in that: The locking tongue rod (12) has a limiting hole (121), and a limiting pin (101) located in the limiting hole (121) is installed in the housing (100).

5. The electromechanical separation intelligent lock body according to claim 1, characterized in that: A slide rail (102) is installed inside the housing (100), and the lower end of the locking tongue rod (12) is slidably connected to the slide rail (102).

6. The electromechanical separation intelligent lock body according to claim 1, characterized in that: The locking tongue rod (12) is provided with a toggle groove (122) for the toggle block (21) to be inserted into. The toggle groove (122) includes toggle parts (1221) arranged symmetrically on the upper and lower sides.

7. The electromechanical separation intelligent lock body according to claim 1, characterized in that: The large gear (4) includes an arc-shaped toothed part (41) and symmetrically arranged at both ends of the toothed part (41). When the large gear (4) rotates, the two symmetrically arranged ...

8. The electromechanical separation intelligent lock body according to claim 1, characterized in that: The large gear (4) is provided with a cam shaft (43), and a circuit board (6) is also installed inside the housing (100). The circuit board (6) is provided with a first Hall sensor (61) for cooperating with the cam shaft (43) to sense the rotation position of the large gear (4).

9. The electromechanical separation intelligent lock body according to claim 8, characterized in that: The latch rod (12) is provided with a protrusion (123), and the circuit board (6) is also provided with a second Hall sensor (62) for cooperating with the protrusion (123) to sense the extension / retraction of the latch (1).

10. A smart lock body with electromechanical separation according to any one of claims 1-9, characterized in that: The outer side of the housing (100) is equipped with a one-key lock / unlock button (7) and a normally open / normally closed button (8). The rear end of the knob (2) extends out of the housing (100) and is connected to the knob (9). The outer side of the knob (9) is provided with anti-slip texture (91).

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