Collision automatic triggering type vehicle door unlocking device
By designing a collision-triggered automatic door unlocking device, and utilizing a control module and a linkage unlocking mechanism, a rapid response automatic unlocking is achieved in the event of a car collision. This solves the problem of difficult operation of traditional door unlocking in emergency situations and ensures the safety of passengers.
Patent Information
- Application Number
- CN202520422339.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional car door unlocking methods are easily obstructed in emergency collisions and are difficult to operate manually. Existing electronic unlocking lacks accurate recognition and rapid response mechanisms, which affects the emergency escape of drivers and passengers.
Design a collision-triggered automatic door unlocking device, including a control module, a first push rod motor, a connecting plate, a moving frame, a rack, gears and other linkage unlocking mechanisms, as well as a clearance component. By accurately receiving collision signals, it can achieve rapid response and automatic unlocking.
The system can accurately and automatically unlock car doors at the moment of a car collision, avoiding delays in escape, reducing the probability of accidental locking, and effectively protecting the lives of drivers and passengers.
Smart Images

Figure CN223867810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unlocking device technology, and in particular to a collision-triggered automatic door unlocking device. Background Technology
[0002] In modern automotive safety technology, the door unlocking system is a crucial component ensuring the rapid escape of occupants in emergencies. Traditional door unlocking methods primarily rely on manual operation or conventional control by the vehicle's electronic systems. While manual unlocking is convenient and effective in normal driving scenarios, it can become difficult or even impossible to perform manually in emergencies such as collisions due to injuries, impaired consciousness, or vehicle deformation, thus delaying rescue efforts. Therefore, this invention proposes a collision-triggered door unlocking device. Utility Model Content
[0003] The purpose of this invention is to address the problems in the background technology where traditional car door unlocking relies on manual or conventional electronic control, manual operation is easily obstructed in emergency collisions, and existing electronic unlocking lacks accurate recognition and rapid response mechanisms, which seriously affects the emergency escape of drivers and passengers. This invention proposes a collision-triggered car door unlocking device.
[0004] The technical solution of this utility model is as follows: A collision-triggered automatic door unlocking device includes a door interlayer, in which a lock block is installed, and a rotating shaft connected to the lock block's locking axis; an unlocking mechanism disposed on the side of the lock block, the unlocking mechanism being used to drive the rotating shaft to rotate and unlock; a clearance component installed on the unlocking mechanism, the clearance component being used to ensure that the unlocking mechanism does not affect the daily use of the lock block; and a control module disposed in the door interlayer, the control module being used to receive a collision signal and control the unlocking mechanism and the clearance component.
[0005] Optionally, the unlocking mechanism includes a first push rod motor fixedly connected to the side of the lock block near the rotating shaft. The output end of the first push rod motor is fixedly connected to a connecting plate. A movable frame is fixedly connected to the side of the connecting plate away from the lock block. The movable frame is U-shaped. A rack is slidably connected to the movable frame. A gear is provided on one side of the rack and meshes with it. The gear is fixedly connected to the outer ring of the rotating shaft.
[0006] Optionally, the movable frame is fixedly connected to a plurality of limit blocks on the side near the first push rod motor. Limit rods are slidably connected in the limit blocks. Both ends of the limit rods are fixedly connected to fixing plates. The plurality of fixing plates are fixedly connected to the side of the locking block.
[0007] Optionally, the clearance component includes multiple sets of connecting rods fixedly connected to the rack on the side away from the gear, with limiting plates slidably connected to the connecting rods, and the multiple sets of limiting plates being fixedly connected to the movable frame.
[0008] Optionally, a spring is fitted around the outer ring of the connecting rod, and the spring is positioned between the rack and the limiting plate.
[0009] Optionally, both ends of the rack are fixedly connected to sliders, and the sliders slide in cooperation with the movable frame.
[0010] Optionally, multiple sets of connecting rods are fixedly connected to a locking plate at their ends away from the rack. A fixing frame is provided on the side of the locking plate away from the rack. The fixing frame is mounted on the moving frame and is L-shaped. An installation frame is fixedly connected to the side of the fixing frame away from the locking block. The installation frame is U-shaped. A second servo motor is mounted on the side of the installation frame away from the fixing frame. The output end of the second servo motor passes through the installation frame and is fixedly connected to a locking block. The locking block is located on the side of the locking plate near the rack and passes through the fixing frame and slides with it.
[0011] Optionally, the control module is electrically connected to the first push rod motor and the second servo motor.
[0012] In summary, this application includes at least one of the following beneficial technical effects:
[0013] This utility model achieves rapid response and automatic unlocking of the car door at the moment of car collision by setting up a control module that can accurately receive collision signals, and a linkage unlocking mechanism composed of a first push rod motor, a connecting plate, a moving frame, a rack, gears, etc., thus avoiding delays in escape due to the inconvenience of manual operation.
[0014] Furthermore, through the coordinated operation of components such as the second servo motor, the locking block, the locking plate, and the spring in the clearance assembly, the unlocking mechanism does not hinder the normal use of the locking block when the car is driving normally. In the event of a collision, the spring force can be quickly released to drive the rack and pinion to mesh and unlock. This achieves the purpose of accurately identifying collision situations and responding precisely, reducing the probability of false locking, and effectively protecting the lives of drivers and passengers.
[0015] In summary, this utility model can accurately and automatically unlock the car door at the moment of collision, effectively protecting the lives of passengers and improving the safety performance of the vehicle. Attached Figure Description
[0016] Figure 1 A schematic diagram of a collision-triggered automatic door unlocking device is provided.
[0017] Figure 2 This is a schematic diagram of the lock block structure;
[0018] Figure 3 This is a schematic diagram of the unlocking mechanism;
[0019] Figure 4 yes Figure 2 Enlarged diagram of point A in the middle.
[0020] Figure label:
[0021] 1. Door interlayer; 2. Lock block; 21. Spindle;
[0022] 3. Unlocking mechanism; 31. First push rod motor; 32. Connecting plate; 33. Moving frame; 34. Rack; 35. Gear; 36. Limiting block; 37. Limiting rod; 38. Fixing plate;
[0023] 4. Yielding component; 41. Connecting rod; 42. Limiting piece; 43. Spring; 44. Slider; 45. Clamping plate; 46. Fixing frame; 47. Mounting frame; 48. Second servo motor; 49. Clamping block. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0025] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Example
[0030] like Figure 1 and Figure 2 As shown, this utility model proposes a collision-triggered automatic door unlocking device, including a door interlayer 1, in which a locking block 2 is installed. The locking block 2 is fixed in the door interlayer 1, which is existing technology and will not be described in detail here. It also includes a rotating shaft 21 connected to the locking shaft of the locking block 2. When the rotating shaft 21 rotates, it drives the locking shaft to rotate, causing the locking block 2 to open, thus realizing the key action of unlocking the door.
[0031] For further details, please refer to Figure 2 and Figure 3 The aforementioned unlocking device includes an unlocking mechanism 3 disposed on the side of the lock block 2. The unlocking mechanism 3 is used to drive the rotating shaft 21 to rotate and unlock. The unlocking mechanism 3 includes a first push rod motor 31 fixedly connected to the side of the lock block 2 near the rotating shaft 21. The position of the first push rod motor 31 is fixed, which can stably provide power output. A connecting plate 32 is fixedly connected to the output end of the first push rod motor 31. A moving frame 33 is fixedly connected to the side of the connecting plate 32 away from the lock block 2. After the first push rod motor 31 is started, it drives the moving frame 33 to move through the connecting plate 32, accurately transmitting power. The moving frame 33 is U-shaped. A rack 34 is slidably connected in the moving frame 33. When the moving frame 33 moves, it drives the rack 34 to move synchronously, ensuring the consistency of movement. A gear 35 is disposed on one side of the rack 34 and meshes with it. When the rack 34 moves, it drives the gear 35 to rotate, converting linear motion into rotational motion. Gear 35 is fixedly connected to the outer ring of rotating shaft 21. When gear 35 rotates, it drives rotating shaft 21 to rotate, efficiently driving rotating shaft 21 to complete the unlocking action. Multiple sets of limiting blocks 36 are fixedly connected to the side of moving frame 33 near the first push rod motor 31. The limiting blocks 36 move synchronously with moving frame 33. Limiting rods 37 are slidably connected in the limiting blocks 36. Fixing plates 38 are fixedly connected to both ends of the limiting rods 37. Multiple sets of fixing plates 38 are fixedly connected to the side of locking block 2. The positions of limiting rods 37 and fixing plates 38 are fixed. In conjunction with limiting blocks 36, they limit the movement of moving frame 33, making the movement of moving frame 33 smooth and effectively avoiding shaking and deviation during the movement.
[0032] Furthermore, such as Figure 3 and Figure 4 As shown, the unlocking device also includes a clearance component 4 installed on the unlocking mechanism 3. The clearance component 4 is used to ensure that the unlocking mechanism 3 does not affect the daily use of the lock block 2. The clearance component 4 includes multiple sets of connecting rods 41 fixedly connected to the side of the rack 34 away from the gear 35. The connecting rods 41 move synchronously with the rack 34, working together to ensure the stability of the overall structure. Limiting plates 42 are slidably connected to the connecting rods 41. The multiple sets of limiting plates 42 are all fixedly connected to the moving frame 33. The position of the limiting plates 42 is fixed, and they work with the connecting rods 41 to limit the rack 34, precisely defining the position of the rack 34. A spring 43 is sleeved on the outer ring of the connecting rods 41. The spring 43 is located between the rack 34 and the limiting plates 42. The spring 43 is used to release the elastic force so that the rack 34 moves closer to the gear 35, providing power quickly when unlocking is required. Both ends of the rack 34 are fixedly connected to sliders 44, which slide in conjunction with the moving frame 33. The sliders 44 further improve the stability of the rack 34's movement and reduce jamming during operation. Multiple connecting rods 41 are fixedly connected to a locking plate 45 at their ends furthest from the rack 34. The locking plate 45 moves synchronously with the rack 34 via the connecting rods 41. A fixed frame 46 is located on the side of the locking plate 45 furthest from the rack 34. The fixed frame 46 is L-shaped and its position is fixed, ensuring that it does not obstruct the movement of the locking plate 45 and allowing it to move freely. A mounting frame 47 is fixedly connected to the side of the fixed frame 46 furthest from the locking block 2. The mounting frame 47 is U-shaped and its position is also fixed. A second servo motor 48 is mounted on the side of the mounting frame 47 away from the fixed frame 46. The output end of the second servo motor 48 passes through the mounting frame 47 and is fixedly connected to a locking block 49. The fixed position of the second servo motor 48 is used to drive the locking block 49 to move, precisely controlling the movement of the locking block 49. The locking block 49 is located on the side of the locking plate 45 near the rack 34. The locking block 49 passes through the fixed frame 46 and slides with it. The locking block 49 is used to limit the rack 34 to a position away from the gear 35, so as not to hinder the normal use of the locking block 2. After the car is hit by a collision, the locking block 49 leaves the position of the locking plate 45, so that the spring 43 can release its elastic force, driving the rack 34 to approach the gear 35 and engage with it, realizing a rapid unlocking response under collision trigger.
[0033] Finally, the unlocking device also includes a control module installed in the door interlayer 1. The control module is used to receive the collision signal of the car and control the unlocking mechanism 3 and the clearance component 4. The control module is electrically connected to the first push rod motor 31 and the second servo motor 48 to efficiently coordinate the operation of each component and ensure that the entire device can quickly and accurately perform the unlocking action in the event of a collision.
[0034] In this embodiment, when the car is driving normally, the locking block 49 is located on the side of the locking plate 45 near the rack 34, which limits the rack 34 to a position away from the gear 35, so that the unlocking mechanism 3 does not affect the daily manual or electronic control unlocking operation of the locking block 2.
[0035] In the event of a collision, the control module in the door interlayer 1 receives a collision signal. The control module immediately sends commands to the first push rod motor 31 and the second servo motor 48. The second servo motor 48 drives the latch 49 away from the latch plate 45. At this time, the spring 43 releases its elastic force, pushing the rack 34 closer to and meshing with the gear 35. Simultaneously, the first push rod motor 31 starts, driving the moving frame 33 to move via the connecting plate 32. The moving frame 33 drives the rack 34 to move synchronously, meshing with the gear 35, thereby causing the gear 35 to rotate. Since the gear 35 is fixedly connected to the outer ring of the rotating shaft 21, the rotation of the gear 35 drives the rotating shaft 21 to rotate, which in turn drives the locking shaft of the locking block 2 to rotate, ultimately opening the locking block 2 and automatically unlocking the door, providing an escape route for the occupants. Throughout the process, the limiting block 36 and the limiting rod 37 cooperate to ensure the smooth movement of the moving frame 33; the connecting rod 41 and the limiting piece 42 cooperate to limit the rack 34; the slider 44 improves the stability of the rack 34's movement, ensuring that all components work together to accurately complete the unlocking action.
[0036] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A collision-triggered automatic door unlocking device, comprising a door interlayer (1), wherein a locking block (2) is installed in the door interlayer (1), characterized in that, Further comprising: A rotating shaft (21) connected to the locking shaft of the locking block (2); An unlocking mechanism (3) arranged on the side of the locking block (2), and the unlocking mechanism (3) is used to drive the rotating shaft (21) to rotate to achieve unlocking; A让位组件 (4) installed on the unlocking mechanism (3), and the让位组件 (4) is used to ensure that the unlocking mechanism (3) does not affect the daily use of the locking block (2); A control module arranged in the door sandwich layer (1), and the control module is used to receive a collision signal and control the unlocking mechanism (3) and the让位组件 (4).
2. The collision-triggered automatic door unlocking device according to claim 1, characterized in that, The unlocking mechanism (3) includes a first push rod motor (31) fixedly connected to the side of the locking block (2) close to the rotating shaft (21), the output end of the first push rod motor (31) is fixedly connected with a connecting plate (32), a moving frame (33) is fixedly connected to the side of the connecting plate (32) away from the locking block (2), the moving frame (33) is arranged in a "U" shape, a rack (34) is slidably connected in the moving frame (33), a gear (35) meshing with the rack (34) is arranged on one side of the rack (34), and the gear (35) is fixedly connected to the outer ring of the rotating shaft (21).
3. The collision-triggered automatic door unlocking device according to claim 2, characterized in that, A plurality of limiting blocks (36) are fixedly connected to the side of the moving frame (33) close to the first push rod motor (31), a limiting rod (37) is slidably connected in the limiting blocks (36), both ends of the limiting rod (37) are fixedly connected with fixing pieces (38), and the plurality of fixing pieces (38) are all fixedly connected to the side of the locking block (2).
4. The collision-triggered automatic door unlocking device according to claim 3, characterized in that, The让位组件 (4) includes a plurality of connecting rods (41) fixedly connected to the side of the rack (34) away from the gear (35), a limiting piece (42) is slidably connected to the connecting rods (41), and the plurality of limiting pieces (42) are all fixedly connected to the moving frame (33).
5. The collision-triggered automatic door unlocking device according to claim 4, characterized in that, A spring (43) is sleeved on the outer ring of the connecting rod (41), and the spring (43) is arranged between the rack (34) and the limiting piece (42).
6. A collision-triggered automatic door unlocking device according to claim 5, characterized in that, Sliders (44) are fixedly connected to both ends of the rack (34), and the sliders (44) are slidably matched with the moving frame (33).
7. A collision-triggered automatic door unlocking device according to claim 6, characterized in that, The ends of the plurality of connecting rods (41) away from the rack (34) are commonly fixedly connected with a clamping plate (45), a fixing frame (46) is arranged on the side of the clamping plate (45) away from the rack (34), the fixing frame (46) is installed on the moving frame ( 33), the fixing frame (46) is arranged in an L shape, a mounting frame (47) is fixedly connected to the side of the fixing frame (46) away from the locking block (2), the mounting frame (47) is arranged in a "冂" shape, a second servo motor (48) is installed on the side of the mounting frame (47) away from the fixing frame (46), the output end of the second servo motor (48) penetrates through the mounting frame (47) and is fixedly connected with a clamping block (49), the clamping block (49) is arranged on the side of the clamping plate (45) close to the rack (34), and the clamping block (49) penetrates through the fixing frame (46) and is slidably matched with it.
8. A collision-triggered automatic door unlocking device according to claim 7, characterized in that, The control module is electrically connected to the first push rod motor (31) and the second servo motor (48).