Back door lock and vehicle

Abstract

This application relates to a tailgate lock and a vehicle. The tailgate lock is used to engage a latch to lock the tailgate. The tailgate lock includes a locking assembly and a drive assembly. The locking assembly has a locking port that mates with the latch. When the tailgate lock is in the unlocked state, the locking port is open to release the latch; when the tailgate lock is in the locked state, the locking port is closed to engage the latch. The drive assembly is driven by the locking assembly and is used to drive the locking assembly to open and close the locking port. Projected orthogonally along the thickness direction of the locking assembly, the drive assembly and the locking assembly at least partially overlap, and the drive assembly and the locking port are offset. By aligning the orthogonal projections of the drive assembly and the locking assembly in the Z-axis direction and offsetting them with the locking port, the space occupied by the tailgate lock in the X-axis direction is reduced, thus reducing the thickness of the tailgate. Without changing the overall vehicle dimensions, more interior space is freed up, thereby increasing the passenger compartment space.

Description

Technical Field

[0001] This application relates to the field of rear door lock technology, and more particularly to a rear door lock and a vehicle. Background Technology

[0002] With the rapid development of the automotive industry and the upgrading of consumption, people's needs for vehicles have shifted from simple means of transportation to a comprehensive experience that combines safety, comfort, and practicality. Under this trend, automotive space optimization has become a key technology area. Especially given the fixed dimensions of the vehicle, how to maximize passenger cabin space to improve the driving and riding experience has become an important direction for industry research and development.

[0003] Some existing tailgate locks sacrifice space to achieve full functionality, requiring a larger layout area and directly impacting usable interior space. Taking integrated electrolytic latching tailgate locks as an example, common technical solutions either place the drive and locking components on the same plane or at an angle, with the drive component mostly located behind the locking component. This results in a larger lock body in the X-direction, meaning a thicker tailgate. This further reduces the effective volume of the passenger compartment in an already cramped interior, making it difficult to meet users' demands for spacious driving and riding space. It also hinders rational interior layout and space optimization, becoming a technical bottleneck limiting improvements in vehicle comfort and space utilization. Utility Model Content

[0004] This application provides a rear door lock that improves the structural compactness of the rear door lock, thereby at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a back door lock is provided for engaging a latch to lock a back door, the back door lock comprising:

[0006] The locking assembly is provided with a locking port that engages with the latch. When the back door lock is in the unlocked state, the locking port opens to release the latch, and when the back door lock is in the locked state, the locking port closes to engage the latch.

[0007] A driving component is connected to the locking component and is used to drive the locking component to open and close the locking port. Along the thickness direction of the locking component, the driving component and the locking port are staggered, and the orthographic projection of the driving component and the orthographic projection of the locking component at least partially overlap.

[0008] Optionally, the locking assembly is detachably connected to the drive assembly.

[0009] Optionally, the locking assembly further includes a fixed base, a locking member, and a limiting member. The locking member and the limiting member are rotatably connected to the fixed base. The fixed base has the locking port. The driving assembly drives the locking member to rotate to close or open the locking port. The limiting member is used to limit the position of the locking member so that the locking member is stable in the position of closing or opening the locking port.

[0010] Optionally, the locking state includes a half-locked state and a fully locked state. The locking member is provided with a plurality of first limiting parts at intervals, and the limiting member is provided with a second limiting part. The second limiting part can abut against different first limiting parts to limit the locking member to be in different positions so that the back door lock is in an unlocked state, a half-locked state, or a fully locked state.

[0011] Optionally, the locking assembly further includes a first elastic element and a second elastic element. The first elastic element elastically connects the fixed base and the locking member, and the second elastic element elastically connects the fixed base and the limiting member. The first elastic element drives the locking member to rotate in a first rotation direction, and the second elastic element drives the limiting member to rotate in a second rotation direction. The first rotation direction and the second rotation direction are opposite, so that the first limiting part abuts against the second limiting part to limit the position of the locking member.

[0012] Optionally, the drive assembly includes a fixed frame, a motor, a first actuating member, and a second actuating member. The motor is connected to the fixed frame, and both the first actuating member and the second actuating member are rotatably connected to the fixed frame. The motor is driven by the first actuating member and the second actuating member respectively. The first actuating member can abut against the locking member, and the second actuating member can abut against the limiting member. The motor drives the first actuating member or the second actuating member. The first actuating member drives the locking member to rotate in a second rotation direction, and the second actuating member drives the limiting member to rotate in a first rotation direction.

[0013] Optionally, along the thickness direction of the drive assembly, the orthographic projection of the motor at least partially coincides with the orthographic projection of the mounting bracket.

[0014] Optionally, the drive assembly further includes a transmission mechanism, through which the motor is connected to the first actuating element and the second actuating element, and the transmission mechanism is used to increase the output torque of the motor.

[0015] Optionally, the transmission mechanism includes a worm gear and a worm shaft that mesh with each other, the worm shaft being fixedly connected to the motor output shaft and rotatably connected to the fixed frame.

[0016] Optionally, the transmission mechanism further includes a gear set, the input gear of which is connected to the turbine drive, and the output gear of which is connected to the first actuating member and the second actuating member respectively.

[0017] Optionally, the gear set includes a first gear set and a second gear set. Along the thickness direction of the drive assembly, the first gear set and the second gear set are respectively disposed on both sides of the fixed frame. The input gear of the first gear set is connected to the turbine drive, and the output gear of the first gear set is coaxial with the input gear of the second gear set.

[0018] Optionally, the drive assembly further includes a limiting post, which is movably connected to the output gear of the second gear set. The first actuating member includes a limiting groove and a decoupling groove that are interconnected. The limiting post can move between the limiting groove and the decoupling groove. When the limiting post is located in the limiting groove, the output gear of the second gear set and the first actuating member move synchronously. When the limiting post is located in the decoupling groove, the output gear of the second gear set and the first actuating member move independently.

[0019] Optionally, the second actuating member includes a first actuating part that can contact the limiting member and a second actuating part that can contact the limiting post. The second actuating part is used to drive the limiting post to move from the limiting groove to the decoupling groove, and the first actuating part is used to actuate the limiting member to rotate along the first rotation direction, so that the back door lock is in the unlocked state.

[0020] Optionally, the drive assembly further includes a third elastic element, which is elastically connected between the fixed frame and the first actuating member, and is used to drive the first actuating member away from the locking member.

[0021] Optionally, the second actuating member further includes a third actuating portion extending toward the edge of the drive assembly, the third actuating portion being used to externally apply a actuating force to rotate the second actuating member.

[0022] Optionally, the drive assembly further includes a toggle pawl fixedly connected to the output gear of the second gear set. The toggle pawl can abut against the second toggle member and drive the first toggle part of the second toggle member to toggle the limiting member to rotate along the first rotation direction, so that the back door lock is in the unlocked state.

[0023] According to a second aspect of this application, a vehicle is provided, including the aforementioned rear door lock.

[0024] In the tailgate lock of this application embodiment, by arranging the positions of the drive component and the locking component, the orthographic projections of the two components in the thickness direction of the locking component coincide, that is, the orthographic projections in the Z-axis direction of the vehicle coincide. Moreover, the drive component and the locking port are misaligned. Compared with the planar or angled arrangement of the drive part and the locking part of the traditional tailgate lock, the space occupied by the tailgate lock in the X-axis direction is effectively reduced, which can reduce the thickness of the tailgate. Without changing the limitation of the overall vehicle size, more interior space is freed up, thereby increasing the passenger compartment space of the vehicle and meeting the user's demand for vehicle comfort and large space.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0028] Figure 1 This is an exploded view of the structure of the back door lock provided in an exemplary embodiment of this disclosure;

[0029] Figure 2 yes Figure 1 The diagram shows a three-dimensional front view of the rear door lock.

[0030] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the back of the door lock shown;

[0031] Figure 4 yes Figure 1 The diagram shows the bottom structure of the rear door lock when it is in the unlocked state.

[0032] Figure 5 yes Figure 1 The diagram shows the bottom structure of the rear door lock when it is in a half-locked state.

[0033] Figure 6 yes Figure 1 The diagram shows the bottom structure of the rear door lock when it is in the fully locked state.

[0034] Figure 7 yes Figure 1 The diagram shows a frontal three-dimensional structure of the rear door lock when it is in the fully locked state.

[0035] Figure 8 yes Figure 1 The diagram shown is a front view of the rear door lock when it is in the fully locked state.

[0036] Figure 9 yes Figure 1 The diagram shown is a front view of the rear door lock when it is in a decoupled state.

[0037] Figure 10 yes Figure 1 The diagram shown is a frontal three-dimensional structural diagram of the rear door lock when it is in the unlocked state.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Locking assembly; 11. Fixing base; 111. Locking opening; 12. Locking component; 121. First limiting part; 1211. Unlocking limiting part; 1212. Half-lock limiting part; 1213. Full-lock limiting part; 122. First pawl; 13. Limiting component; 131. Second limiting part; 1311. Unlocking limiting part; 1312. Locking limiting part; 132. Second pawl; 14. First elastic element; 15. Second elastic element;

[0040] 2. Drive assembly; 21. Fixing frame; 22. Motor; 23. First actuating element; 231. Limiting groove; 232. Decoupling groove; 24. Second actuating element; 241. First actuating part; 242. Second actuating part; 243. Third actuating part; 25. Transmission mechanism; 251. Turbine; 252. Worm gear; 253. First gear set; 254. Second gear set; 26. Limiting post; 27. Third elastic element; 28. Actuating claw. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0042] According to the first aspect of this application, referring to Figures 1 to 3A back door lock is provided for engaging a latch to lock a back door. The back door lock includes a locking assembly 1 and a driving assembly 2. The locking assembly 1 is provided with a locking port 111 that engages with the latch. When the back door lock is in the unlocked state, the locking port 111 is open to release the latch. When the back door lock is in the locked state, the locking port 111 is closed to engage the latch. The driving assembly 2 is driven to the locking assembly 1 and is used to drive the locking assembly 1 to open and close the locking port 111. Along the thickness direction of the locking assembly 1, the driving assembly 2 and the locking port 111 are staggered, and the orthographic projection of the driving assembly 2 and the orthographic projection of the locking assembly 1 at least partially coincide.

[0043] When the rear door lock is unlocked, the drive component 2 pushes the locking component 1 to move, causing the originally closed lock opening 111 to gradually open. When the lock opening 111 is fully open, the latch is unrestrained, and the rear door can be opened freely.

[0044] When the user needs to close and lock the tailgate, he / she manually pushes the tailgate closer to the vehicle body. The latch gradually approaches the locking port 111. When the tailgate is closed to a certain state, the locking port 111 is initially closed. The drive component 2 runs in the opposite direction to drive the locking component 1 to move. The locking port 111 is further closed until it engages the latch, firmly locking the tailgate to the vehicle body and completing the locking process.

[0045] In this embodiment, the drive assembly 2 and the locking assembly 1 at least partially overlap in their orthographic projection along the thickness direction (Z-axis direction of the vehicle). The drive assembly 2 and the locking assembly 1 are arranged vertically, changing the traditional layout where the drive components of the tailgate lock are mostly distributed behind the locking components, resulting in a larger X-axis dimension. This reduces the space occupied by the tailgate lock in the vehicle's front-to-back (X-axis) direction, freeing up more space for the passenger compartment or trunk and improving the utilization rate of the vehicle's interior space. The drive assembly 2 and the locking port 111 are staggered to avoid interference between components, ensuring that the tailgate lock can connect and release normally with the latch.

[0046] Reference Figure 1 In some embodiments, the locking component 1 is detachably connected to the driving component 2.

[0047] In this embodiment, the locking component 1 and the driving component 2 are designed to be detachably connected, such as by using screws instead of the traditional one-piece riveting. For door locks of different configurations and specifications, only the corresponding components need to be replaced, without the need for redesign, which is conducive to the platform design of door locks and reduces R&D costs and time. At the same time, the detachable connection method makes after-sales maintenance more convenient, allowing maintenance personnel to quickly disassemble faulty components for repair or replacement, improving maintenance efficiency and reducing maintenance difficulty and cost.

[0048] Reference Figure 4In some embodiments, the locking assembly 1 further includes a fixed base 11, a locking member 12, and a limiting member 13. The locking member 12 and the limiting member 13 are rotatably connected to the fixed base 11. The fixed base 11 has a locking port 111. The driving assembly 2 drives the locking member 12 to rotate to close or open the locking port 111. The limiting member 13 is used to limit the position of the locking member 12 so that the locking member 12 is stable in the position of closing or opening the locking port 111.

[0049] In this embodiment, the locking member 12 is provided with a locking tongue. When the locking member 12 rotates, the locking tongue blocks or opens the locking port 111, thereby realizing the opening and closing of the locking port 111. The limiting member 13 prevents the locking member 12 from rotating accidentally due to vibration or other factors during vehicle operation by limiting the locking member 12 in the locked state, thus ensuring the structural stability of the tailgate lock in the locked state. At the same time, the locking member 12 and the limiting member 13 are independently rotatably connected to the fixed base 11, making the driving process of the driving component 2 on the locking member 12 smoother, reducing mechanical interference, and improving the reliability of the tailgate lock operation.

[0050] Reference Figure 4 In some embodiments, the locking state includes a half-locked state and a fully locked state. The locking member 12 is provided with a plurality of first limiting parts 121 at intervals, and the limiting member 13 is provided with a second limiting part 131. The second limiting part 131 can abut against different first limiting parts 121 to limit the locking member 12 to be in different positions so that the back door lock is in an unlocked state, a half-locked state or a fully locked state.

[0051] In some examples, the first limiting part 121 includes a half-lock limiting part 1212 and a full-lock limiting part 1213, and the second limiting part 131 includes a locking limiting part. When the rear door lock is in a half-locked state, the half-lock limiting part 1212 abuts against the locking limiting part; when the rear door lock is in a full-locked state, the full-lock limiting part 1213 abuts against the locking limiting part.

[0052] In some examples, the first limiting part 121 includes an unlocking limiting part 1211, which abuts against the fixed seat 11 when the rear door lock is in the unlocked state, that is, the lock tongue abuts against the fixed seat 11.

[0053] In this embodiment, a two-stage positioning and locking structure is formed by the abutting cooperation of multiple first limiting parts 121 (unlocking limiting part 1211, half-locking limiting part 1212, and full-locking limiting part 1213) circumferentially of the locking member 12 and the second limiting parts 131 (unlocking limiting part 1311 and locking limiting part 1312) circumferentially of the limiting member 13: When the tailgate is closed, the latch enters the locking port 111, pushing the locking member 12 to rotate counterclockwise. The abutting of the half-locking limiting part 1212 and the locking limiting part 1312 puts the tailgate lock in a half-locked state, providing a pre-locking function for the tailgate and preventing the tailgate from being opened accidentally during driving. The drive assembly 2 drives the locking member 12 to continue rotating counterclockwise. The abutting of the full-locking limiting part 1213 and the locking limiting part 1312 puts the tailgate lock in a fully locked state, providing a high-strength locking force to ensure that the locking port 111 remains closed when the vehicle is bumpy. Additionally, during unlocking, the drive assembly 2 drives the limiting member 13 to rotate clockwise, releasing the limiting member 13 from restricting the locking member 12. The locking member 12 can then rotate to the unlocked position, and the unlocking limiting part 1211 abuts against the fixed seat 11, ensuring that the locking port 111 is fully open and preventing accidental locking. The multi-stage limiting structure improves the safety and reliability of the tailgate lock and facilitates adaptation to the locking requirements of different vehicle models by adjusting the limiting part, further facilitating the platform design of the tailgate lock.

[0054] In practical applications, the second limiting part 131 also includes an unlocking limiting part 1311, which can abut against the unlocking limiting part 1211, so that the back door lock is in the unlocked state. At this time, the first pawl 122 of the locking member 12 can be used as the unlocking limiting part 1211.

[0055] Reference Figures 2 to 6 In some embodiments, the locking assembly 1 further includes a first elastic element 14 and a second elastic element 15. The first elastic element 14 elastically connects the fixing seat 11 and the locking member 12, and the second elastic element 15 elastically connects the fixing seat 11 and the limiting member 13. The first elastic element 14 drives the locking member 12 to rotate in a first rotation direction, and the second elastic element 15 drives the limiting member 13 to rotate in a second rotation direction. The first rotation direction and the second rotation direction are opposite, so that the first limiting part 121 and the second limiting part 131 abut against each other to limit the position of the locking member 12.

[0056] In this embodiment, by providing a first elastic element 14 and a second elastic element 15, a continuous and stable elastic driving force is provided to the locking element 12 and the limiting element 13, respectively, so that the first limiting part 121 and the second limiting part 131 always remain in a tight abutment state. The first elastic element 14 drives the locking element 12 to rotate along the first rotation direction. Figure 4 In a clockwise direction, the second elastic element 15 drives the limiting element 13 to rotate along the second rotation direction. Figure 4The counter-clockwise rotation ensures reliable engagement between the limiting parts in the unlocked, half-locked, and fully locked states of the back door lock. The first elastic element 14 and the second elastic element 15 improve the stability and reliability of the back door lock operation, reduce safety hazards caused by limiting failure, and the buffering effect of the elastic elements can also reduce rigid collisions between components, extend the service life of the back door lock, and further optimize the overall performance of the back door lock.

[0057] Reference Figure 2 and Figure 4 In some embodiments, the drive assembly 2 includes a fixed frame 21, a motor 22, a first actuating member 23 and a second actuating member 24. The motor 22 is connected to the fixed frame 21, and the first actuating member 23 and the second actuating member 24 are both rotatably connected to the fixed frame 21. The motor 22 is drively connected to the first actuating member 23 and the second actuating member 24 respectively. The first actuating member 23 can abut against the locking member 12, and the second actuating member 24 can abut against the limiting member 13. The motor 22 drives the first actuating member 23 or the second actuating member 24. The first actuating member 23 drives the locking member 12 to rotate in a second rotation direction, and the second actuating member 24 drives the limiting member 13 to rotate in a first rotation direction.

[0058] In this embodiment, the motor 22 serves as the sole power component, simultaneously connected to the first actuating member 23 and the second actuating member 24. This reduces the number of power components within the drive assembly 2, thereby lowering the overall weight and cost of the rear door lock. The first actuating member 23 drives the locking member 12 to rotate in the second rotation direction, switching the rear door lock from a half-locked state to a fully locked state. The second actuating member 24 drives the limiting member 13 to rotate in the first rotation direction, switching the rear door lock from a fully locked or half-locked state to an unlocked state. The reverse movements of these two components achieve the switching between the opening and closing of the locking port 111 and the locking state. The transmission path is simple, and the driving efficiency is high.

[0059] Reference Figure 2 and Figure 4 In some embodiments, the locking member 12 is provided with a first pawl 122 on its outer periphery, and the first actuating member 23 can abut against the first pawl 122 to push the locking member 12 to rotate; the limiting member 13 is provided with a second pawl 132 on its outer periphery, and the second actuating member 24 can abut against the second pawl 132 to push the limiting member 13 to rotate.

[0060] Reference Figure 2 In some embodiments, along the thickness direction of the drive assembly 2, the orthographic projection of the motor 22 at least partially coincides with the orthographic projection of the mounting bracket 21.

[0061] In this embodiment, by at least partially overlapping the orthographic projection of the motor 22 and the fixing frame 21 along the thickness direction (X-axis direction of the vehicle) of the drive assembly 2, the size of the tailgate lock in the Y-axis and Z-axis directions of the vehicle is reduced, making the structure of the drive assembly 2 more compact. Without affecting the power transmission efficiency of the motor 22, the overall volume of the tailgate lock is significantly reduced. The compact structural design is not only conducive to the integrated installation between the drive assembly 2 and the locking assembly 1.

[0062] Reference Figure 2 and Figure 3 In some embodiments, the drive assembly 2 further includes a transmission mechanism 25, through which the motor 22 is connected to the first actuating member 23 and the second actuating member 24. The transmission mechanism 25 is used to increase the output torque of the motor 22.

[0063] In this embodiment, a transmission mechanism 25 is provided to connect the motor 22 with the first actuating member 23 and the second actuating member 24, thereby increasing the output torque of the motor 22. The transmission mechanism 25 can convert the relatively small original torque of the motor 22 into a large torque required to satisfy the action of the locking member 12 and the limiting member 13, ensuring that the back door lock has sufficient driving force during opening, closing and locking, and can operate reliably even in the face of mechanical resistance generated by long-term use or freezing or jamming in extreme environments. At the same time, this design allows for the selection of a smaller and lower-power motor 22, further optimizing the spatial layout and energy consumption performance of the drive assembly 2, and reducing the overall manufacturing cost.

[0064] Reference Figure 2 In some embodiments, the transmission mechanism 25 includes a worm gear 251 and a worm 252 that mesh with each other. The worm 252 is fixedly connected to the output shaft of the motor 22 and rotatably connected to the fixed frame 21.

[0065] In this embodiment, on the one hand, the worm gear 251 and worm 252 can achieve a large reduction ratio, converting the high speed and low torque of the motor 22 into a low speed and high torque, providing a strong and stable driving force for the action of the locking member 12 and the limiting member 13, ensuring that the tailgate lock can reliably open, close and lock under various working conditions. On the other hand, the self-locking function of the worm gear 251 and worm 252 can effectively prevent the tailgate lock from being mis-locked due to external impact or vibration in the locked state. Even if the motor 22 is powered off or the control system fails, the worm gear 251 and worm 252 can maintain the locked state, greatly improving the safety of the tailgate lock.

[0066] Reference Figure 2 and Figure 3 In some embodiments, the transmission mechanism 25 further includes a gear set, the input gear of which is connected to the turbine 251, and the output gear of which is connected to the first actuating member 23 and the second actuating member 24 respectively.

[0067] In this embodiment, a gear set is installed on the basis of the worm gear 252 transmission of the worm 251. The input gear of the gear set is coaxially connected to the worm 251. The gear set further amplifies the torque output by the worm 251 and optimizes the transmission path. The output gear drives the first actuating element 23 and the second actuating element 24 respectively, realizing precise control of the locking element 12 and the limiting element 13. Compared with the existing complex irregular linkage transmission system, the gear structure design and transmission design are simple, simplifying the structure of the rear door lock, reducing the failure rate, and improving the reliability and durability of the rear door lock.

[0068] Reference Figure 2 and Figure 3 In some embodiments, the gear set includes a first gear set 253 and a second gear set 254. Along the thickness direction of the drive assembly 2, the first gear set 253 and the second gear set 254 are respectively disposed on both sides of the fixed frame 21. The input gear of the first gear set 253 is connected to the turbine 251 for transmission, and the output gear of the first gear set 253 is coaxial with the input gear of the second gear set 254.

[0069] In this embodiment, by setting a first gear set 253 and a second gear set 254 and arranging them on both sides of the fixing frame 21 along the thickness direction (X-axis direction) of the drive assembly 2, the spatial layout of the drive assembly 2 is further optimized. This fully utilizes the space on both sides of the fixing frame 21, avoids the accumulation of transmission components in a single direction, and effectively reduces the size of the tailgate lock in the Y-axis and Z-axis directions, making the tailgate lock structure more compact. Furthermore, the gear sets can be flexibly adjusted in layout according to the installation requirements of different vehicle models, enhancing the versatility and adaptability of the tailgate lock and improving space utilization.

[0070] Reference Figures 7 to 9 In some embodiments, the drive assembly 2 further includes a limiting post 26, which is movably connected to the output gear of the second gear set 254. The first actuating member 23 includes a limiting groove 231 and a decoupling groove 232 that are interconnected. The limiting post 26 can move between the limiting groove 231 and the decoupling groove 232. When the limiting post 26 is located in the limiting groove 231, the output gear of the second gear set 254 and the first actuating member 23 move synchronously. When the limiting post 26 is located in the decoupling groove 232, the output gear of the second gear set 254 and the first actuating member 23 move independently.

[0071] In this embodiment, when the drive component 2 fails due to power failure or mechanical jamming, the user can manually push the limiting post 26 from the limiting groove 231 into the decoupling groove 232. This pushes the first actuating member 23 away from the locking member 12 within the decoupling groove 232, thus releasing the first actuating member 23 from its limiting position on the locking member 12. Then, by actuating the second actuating member 24, the limiting member 13 contacts the locking member 12, allowing the locking member 12 to move to the unlocked state under the action of the first elastic member 14, avoiding the risk of being trapped due to the door lock being locked. By setting up the decoupling structure, the manual unlocking function of the door lock is realized. Furthermore, the movable connection of the limiting post 26 between the limiting groove 231 and the decoupling groove 232 ensures reliable power transmission under normal operating conditions and provides a rapid response mechanism for emergencies. This allows the back door lock to maintain high integration and a compact design while possessing redundancy capabilities to cope with extreme working conditions.

[0072] Reference Figure 9 and Figure 10 In some embodiments, the second actuating member 24 includes a first actuating part 241 that can contact the limiting member 13 and a second actuating part 242 that can contact the limiting post 26. The second actuating part 242 is used to drive the limiting post 26 to move from the limiting groove 231 to the decoupling groove 232, and the first actuating part 241 is used to actuate the limiting member 13 to rotate in the first rotation direction so that the back door lock is in the unlocked state.

[0073] In this embodiment, the second actuating member 24, by setting a first actuating part 241 and a second actuating part 242, can simultaneously achieve "decoupling" and "unlocking" by operating the second actuating member 24. When the rear door lock is in a fault-locked state, actuating the second actuating member 24 causes the second actuating part 242 to drive the limiting post 26 to slide from the limiting groove 231 to the decoupling groove 232, releasing the linkage constraint between the driving assembly 2 and the first actuating member 23; on the other hand, the first actuating part 241 pushes the limiting member 13 away from the locking member 12, causing the locking member 12 to reset to the unlocked state under the action of the first elastic member 14. Operating the second actuating member 24 once can achieve both "decoupling" and "unlocking," simplifying the emergency operation structure of the rear door lock, reducing redundant components, improving safety while optimizing the spatial layout, and providing a simple and convenient structure.

[0074] Reference Figure 4 In some embodiments, the drive assembly 2 further includes a third elastic element 27, which is elastically connected between the fixed frame 21 and the first actuating element 23. The third elastic element 27 is used to drive the first actuating element 23 away from the locking element 12.

[0075] In this embodiment, by setting a third elastic element 27 to connect the fixing frame 21 and the first actuating element 23, the first actuating element 23 can automatically reset after the back door lock is decoupled, improving ease of use and system reliability. When the limiting post 26 moves from the limiting groove 231 to the decoupling groove 232 to complete the decoupling of the drive assembly 2 and the first actuating element 23, the third elastic element 27 immediately releases its elastic potential energy, driving the first actuating element 23 to automatically move away from the locking member 12. No manual reset operation by the user is required, simplifying the unlocking process and shortening the emergency response time.

[0076] Reference Figure 9 and Figure 10 In some embodiments, the second actuating member 24 further includes a third actuating portion 243, which extends toward the edge of the driving assembly 2 and is used to apply a toggle force externally to rotate the second actuating member 24.

[0077] In this embodiment, by providing a third actuating part 243 on the second actuating member 24, an easy-to-apply operating point is provided for the user. Whether it is manual adjustment during routine maintenance or emergency unlocking in an emergency, the user can apply force to the third actuating part 243 with their fingers or tools for convenient operation. In addition, extending to the edge to give it a longer operating lever arm reduces the required operating torque, making the towing process more effortless.

[0078] Reference Figure 8 In some embodiments, the drive assembly 2 further includes a toggle 28 fixedly connected to the output gear of the second gear set 254. The toggle 28 can abut against the second toggle member 24 and drive the first toggle part 241 of the second toggle member 24 to toggle the limiting member 13 to rotate in the first rotation direction so that the back door lock is in the unlocked state.

[0079] In this embodiment, by fixing the actuating pawl 28 to the output gear of the second gear set 254 and cooperating with the second actuating member 24, the automatic unlocking of the back door lock is achieved, improving ease of use. When the drive assembly 2 receives an unlocking command, the motor 22 transmits power through the worm gear 251, worm 252, and gear set, driving the output gear of the second gear set 254 to rotate. The actuating pawl 28, which is fixedly connected to it, moves accordingly, pushing the first actuating part 241 of the second actuating member 24. After the second actuating member 24 is subjected to force, it drives the limiting member 13 to rotate in the first rotation direction, releasing the limiting of the locking member 12, so that the locking member 12 is reset to the unlocked state under the action of the first elastic member 14, realizing the full automation of the unlocking action.

[0080] According to a second aspect of this application, a vehicle is provided that includes the aforementioned rear door lock, the vehicle having all the beneficial effects of the aforementioned rear door lock, which will not be repeated here.

[0081] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0082] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0084] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0085] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A back door lock characterized by comprising: For engaging the latch to lock the rear door, the rear door lock includes: The locking assembly is provided with a locking port that engages with the latch. When the back door lock is in the unlocked state, the locking port opens to release the latch, and when the back door lock is in the locked state, the locking port closes to engage the latch. A driving component is connected to the locking component and is used to drive the locking component to open and close the locking port. Along the thickness direction of the locking component, the driving component and the locking port are staggered, and the orthographic projection of the driving component and the orthographic projection of the locking component at least partially overlap.

2. The back door lock according to claim 1, characterized in that, The locking component is detachably connected to the driving component.

3. The back door lock according to claim 1, wherein The locking assembly further includes a fixed base, a locking member, and a limiting member. The locking member and the limiting member are rotatably connected to the fixed base. The fixed base has the locking port. The driving assembly drives the locking member to rotate to close or open the locking port. The limiting member is used to limit the position of the locking member so that the locking member is stable in the position of closing or opening the locking port.

4. The back door lock according to claim 3, characterized in that The locking state includes a half-locked state and a fully locked state. The locking member is provided with a plurality of first limiting parts at intervals. The limiting member is provided with a second limiting part. The second limiting part can abut against different first limiting parts to limit the locking member to be in different positions so that the back door lock is in an unlocked state, a half-locked state or a fully locked state.

5. The back door lock according to claim 4, wherein The locking assembly further includes a first elastic element and a second elastic element. The first elastic element elastically connects the fixed base and the locking member, and the second elastic element elastically connects the fixed base and the limiting member. The first elastic element drives the locking member to rotate in a first rotation direction, and the second elastic element drives the limiting member to rotate in a second rotation direction. The first rotation direction and the second rotation direction are opposite, so that the first limiting part abuts against the second limiting part to limit the position of the locking member.

6. The back door lock according to claim 5, wherein The driving assembly includes a fixed frame, a motor, a first actuating member, and a second actuating member. The motor is connected to the fixed frame, and both the first actuating member and the second actuating member are rotatably connected to the fixed frame. The motor is driven by the first actuating member and the second actuating member respectively. The first actuating member can abut against the locking member, and the second actuating member can abut against the limiting member. The motor drives the first actuating member or the second actuating member. The first actuating member drives the locking member to rotate in a second rotation direction, and the second actuating member drives the limiting member to rotate in a first rotation direction.

7. The back door lock according to claim 6, wherein Along the thickness direction of the drive assembly, the orthographic projection of the motor at least partially coincides with the orthographic projection of the mounting frame.

8. The back door lock according to claim 6, wherein The drive assembly further includes a transmission mechanism, through which the motor is connected to the first actuating element and the second actuating element. The transmission mechanism is used to increase the output torque of the motor.

9. The back door lock according to claim 8, wherein The transmission mechanism includes a worm gear and a worm shaft that mesh with each other. The worm gear is fixedly connected to the output shaft of the motor and rotatably connected to the fixed frame.

10. The back door lock according to claim 9, wherein The transmission mechanism further includes a gear set, the input gear of which is connected to the turbine drive, and the output gear of which is connected to the first actuating member and the second actuating member respectively.

11. The back door lock according to claim 10, wherein The gear set includes a first gear set and a second gear set. Along the thickness direction of the drive assembly, the first gear set and the second gear set are respectively disposed on both sides of the fixed frame. The input gear of the first gear set is connected to the turbine drive, and the output gear of the first gear set is coaxial with the input gear of the second gear set.

12. The back door lock according to claim 11, wherein The drive assembly further includes a limiting post, which is movably connected to the output gear of the second gear set. The first actuating member includes a limiting groove and a decoupling groove that are interconnected. The limiting post can move between the limiting groove and the decoupling groove. When the limiting post is located in the limiting groove, the output gear of the second gear set and the first actuating member move synchronously. When the limiting post is located in the decoupling groove, the output gear of the second gear set and the first actuating member move independently.

13. The back door lock according to claim 12, wherein The second actuating member includes a first actuating part that can contact the limiting member and a second actuating part that can contact the limiting post. The second actuating part is used to drive the limiting post to move from the limiting groove to the decoupling groove, and the first actuating part is used to actuate the limiting member to rotate along the first rotation direction, so that the back door lock is in the unlocked state.

14. The back door lock according to claim 13, wherein The drive assembly further includes a third elastic element, which is elastically connected between the fixed frame and the first actuating member, and is used to drive the first actuating member away from the locking member.

15. The back door lock according to claim 13, wherein The second actuating member further includes a third actuating portion extending toward the edge of the drive assembly, the third actuating portion being used to externally apply a actuating force to rotate the second actuating member.

16. The back door lock according to claim 14, wherein The drive assembly further includes a toggle pawl fixedly connected to the output gear of the second gear set. The toggle pawl can abut against the second toggle member and drive the first toggle part of the second toggle member to toggle the limiting member to rotate along the first rotation direction, so that the back door lock is in the unlocked state.

17. A vehicle characterized by comprising: Includes the back door lock as described in any one of claims 1-16.

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