Safety locking device for opening automobile door
By setting an acceleration sensor and tilt angle sensor in the door lock body, the vehicle status is monitored in real time and the lock tongue is driven to lock the lock, the problem of accidental opening of the door in an emergency is solved to ensure the safety of the occupants.
Patent Information
- Application Number
- CN202422269746.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing door locking system is difficult to effectively prevent the door from opening unexpectedly in emergencies, especially when emergency braking or overturning, which poses potential safety hazards.
Acceleration sensor and tilt angle sensor are used to monitor the vehicle status in real time, analyze signals through the data processing unit and drive the locking actuator to control the movement of the locking tongue between the locked position and the non-locked position, enhancing the locking function of the car door.
When the vehicle is subjected to severe collision or rollover, the locking function is automatically activated to prevent the door from accidentally opening due to external impact, which improves the safety of the occupants in the car.
Smart Images
Figure CN223215087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile safety, in particular to a vehicle door opening safety locking device. Background Art
[0002] With the development of the automotive industry and the improvement of people's living standards, cars have become an indispensable part of modern life. Car safety has always been a key concern for consumers, especially when the vehicle is parked. The secure locking function of the car door is particularly important. Traditional door locking systems mainly rely on mechanical locking mechanisms and electronic locking systems to ensure vehicle safety.
[0003] There are many types of door locking devices on the market, but these devices are often unreliable in the face of emergencies. For example, in the event of emergency braking or rollover, if the door locking system cannot effectively prevent the door from opening accidentally, the safety of the passengers will be seriously threatened. In addition, when the vehicle encounters a collision or collision while driving, the door may automatically unlock or open due to the impact force, which is a potential danger to the passengers in the car. Utility Model Content
[0004] The purpose of the present invention is to provide a vehicle door opening safety locking device to solve the problem raised in the above background art that the vehicle door may accidentally open in the event of an accident, thereby affecting the safety of the passengers in the vehicle.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a car door opening safety locking device, including a door lock body, a lock tongue symmetrically provided on the upper end of the interior of the door lock body, and a vertically distributed linkage rod connected to the corresponding side of the lock tongue, a locking actuator is provided between the bottom ends of the linkage rods, and the locking actuator can drive the lock tongue to move between a locked position and an unlocked position through the linkage rod, and a sensor module is provided at the lower end of the interior of the door lock body, and the sensor module includes an acceleration sensor and a tilt angle sensor, the acceleration sensor is used to detect the acceleration change of the vehicle during driving, and the tilt angle sensor is used to detect the rollover state of the vehicle.
[0006] Preferably, the locking actuator includes an upper rack, a gear and a lower rack, the gear is connected between the bottom ends of the linkage rod through a motor, the upper rack and the lower rack are staggered on the upper and lower sides of the gear and mesh with the gear, and the upper rack and the lower rack are respectively fixedly connected to the corresponding linkage rod.
[0007] Preferably, the four corners of the door lock body edge are provided with reinforcing ribs, and the connection between the reinforcing ribs and the outer wall of the door lock body is fixed by welding.
[0008] Preferably, a torsion spring connected to the inner wall of the door lock body is provided between the lock tongues, and elastic blocks are provided on the outer sides of the top ends of both sides of the torsion spring, and a guide shaft movably connected to the linkage rod is also provided inside the door lock body.
[0009] Preferably, both sides of the top end of the vehicle door lock body are provided with through-holes that match the lock tongue structure, and rubber rings are provided on the inner walls of the through-holes on both sides of the top end of the vehicle door lock body.
[0010] Preferably, the sensor module further includes a data processing unit, and the data processing unit is electrically connected to the acceleration sensor and the tilt angle sensor respectively.
[0011] Compared to existing technologies, the present invention offers the following advantages: The vehicle door opening safety locking device automatically activates its locking function upon detecting a severe collision or rollover, preventing the door from accidentally opening due to external impact forces, thereby more effectively protecting the lives of vehicle occupants. The device monitors vehicle dynamics in real time using acceleration and tilt sensors. A data processing unit rapidly analyzes the sensor signals and, when necessary, issues a command to the locking actuator, which, via a linkage lever, drives the lock tongue into a reinforced locking position, ensuring the door remains securely closed even under extreme conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic structural diagram of a vehicle door opening safety locking device according to the present utility model;
[0013] Figure 2 This is a schematic diagram of the external side structure of a door lock body of a vehicle door opening safety locking device of the present invention;
[0014] Figure 3 The utility model is a schematic diagram of the connection structure of the linkage rod and the guide shaft of the automobile door opening safety locking device.
[0015] In the figure: 1. Door lock body; 2. Lock tongue; 3. Linkage rod; 4. Sensor module; 41. Acceleration sensor; 42. Tilt angle sensor; 43. Data processing unit; 5. Locking actuator; 51. Upper rack; 52. Gear; 53. Lower rack; 6. Guide shaft; 7. Reinforcement rib; 8. Torsion spring; 9. Rubber ring. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0017] See also Figure 1-3The utility model provides a technical solution: a car door opening safety locking device, including a car door lock body 1, a lock tongue 2 is symmetrically provided at the upper end of the interior of the car door lock body 1, a lock catch that matches the lock tongue 2 structure can be installed on the door frame, and the corresponding sides of the lock tongue 2 are connected to a vertically distributed linkage rod 3, and a locking actuator 5 is provided between the bottom ends of the linkage rod 3. The locking actuator 5 can drive the lock tongue 2 to move between the locked position and the unlocked position through the linkage rod 3, and a sensor module 4 is provided at the lower end of the interior of the car door lock body 1. The sensor module 4 includes an acceleration sensor (model: ENDEVCO 41A13-M5) and tilt angle sensor 42 (single-axis tilt angle sensor based on capacitive 3D-MEMS technology), the acceleration sensor 41 is used to detect the acceleration change of the vehicle during driving, and the tilt angle sensor 42 is used to detect the rollover state of the vehicle. The door lock body 1 of this structure can usually be installed on the inner frame of the vehicle door. When the vehicle encounters an emergency braking or rollover and other emergencies, the acceleration sensor 41 and the tilt angle sensor 42 will monitor the status information of the vehicle in real time. Once abnormal acceleration or rollover is detected, the sensor module 4 will quickly send the signal The signal is transmitted to the locking actuator 5, and the locking actuator 5 drives the lock tongue 2 to move to the locked position through the linkage rod 3, so that the lock tongue 2 is more firmly embedded in the lock catch on the door frame, thereby enhancing the locking strength of the door and effectively preventing the door from being accidentally opened due to external impact. This not only improves the reliability of the door locking system, but also protects the life safety of the occupants in the car at critical moments, and solves the problem that the door locking system may not be able to effectively prevent the door from being accidentally opened when the vehicle is in a severe collision or rollover. The locking actuator 5 includes an upper rack 51, a gear 52 and a lower rack 53. The gear 52 is connected to the upper rack 51, a gear 52 and a lower rack 53. The motor is connected between the bottom ends of the linkage rods 3, and the upper rack 51 and the lower rack 53 are staggered on the upper and lower sides of the gear 52 and meshed with the gear 52, and the upper rack 51 and the lower rack 53 are respectively fixedly connected to the corresponding linkage rods 3, and the two linkage rods 3 are also provided with perforations corresponding to the upper rack 51 or the lower rack 53. When the motor drives the gear 52 to rotate, the upper rack 51 and the lower rack 53 meshed with the gear 52 are driven to move up and down accordingly. The movements of the upper rack 51 and the lower rack 53 are respectively transmitted to the lock tongue 2 through the two linkage rods 3 connected thereto, so that the lock tongue 2 can It can realize fast and accurate telescopic action in the door lock body 1, thereby enhancing the locking stability of the door in an emergency. The four corners of the edge of the door lock body 1 are provided with reinforcing ribs 7, and the connection between the reinforcing ribs 7 and the outer wall of the door lock body 1 is fixed by welding. The reinforcing ribs 7 of this structure can effectively disperse and resist the stress applied to the door lock body 1 when the door is subjected to external impact force, enhance the rigidity and anti-deformation ability of the overall structure, thereby ensuring the stability and reliability of the door lock body 1 in long-term use. A torsion spring 8 connected to the inner wall of the door lock body 1 is provided between the lock tongues 2.And the outer sides of the top ends of the torsion spring 8 are provided with elastic blocks, and the interior of the car door lock body 1 is also provided with a guide shaft 6 that is movably connected to the linkage rod 3. In the displacement process of the lock tongue 2 of this structure, the torsion spring 8 can automatically open and close by its own elastic force, thereby pressing against the inner end of the lock tongue 2 to ensure the stability of the lock tongue 2 in different states, and the guide shaft 6 plays a positioning role when the two linkage rods 3 are relatively displaced, making the movement of the linkage rod 3 more accurate and stable. Both sides of the top of the car door lock body 1 are provided with through-holes that match the structure of the lock tongue 2, and rubber rings 9 are provided on the inner walls of the through-holes on both sides of the top of the car door lock body 1. The through-holes on both sides of the top of the car door lock body 1 of this structure allow the lock tongue 2 to perform necessary displacement in the through-holes, ensuring that the lock tongue 2 can be smoothly extended and retracted to lock and unlock. The lock tongue 2 acts as a seal and buffer during its movement through the opening, reducing wear and preventing dust and moisture from entering the interior of the door lock body 1, thereby extending the lock body's service life and maintaining good working condition. The sensor module 4 also includes a data processing unit 43, which is electrically connected to the acceleration sensor 41 and the tilt angle sensor 42. The acceleration sensor 41 and the tilt angle sensor 42 in this structure monitor changes in the vehicle's status in real time and transmit this information to the data processing unit 43. The data processing unit 43 analyzes and processes the data from these two sensors to determine whether the safety locking mechanism needs to be activated. If a potential risk is determined, the data processing unit 43 sends a command to the lock actuator 5, thereby achieving rapid response and timely protection.
[0018] Working Principle: When using the vehicle door opening safety locking device, the acceleration sensor 41 and the tilt angle sensor 42 first monitor the vehicle status information in real time. Once abnormal acceleration or rollover is detected, the data processing unit 43 in the sensor module 4 quickly analyzes the sensor signal and issues a command through the lock actuator 5. The motor in the lock actuator 5 drives the gear 52 to rotate, thereby driving the upper rack 51 and the lower rack 53 meshing with the gear 52 to move up and down accordingly. The movement of the upper rack 51 and the lower rack 53 is transmitted to the lock tongue 2 through the two connecting rods 3 connected to them. When the connecting rod 3 moves, it will move along the guide shaft 6, allowing the lock tongue 2 to achieve rapid and precise extension and retraction in the door lock body 1. At the same time, the torsion spring 8 automatically opens and closes due to its own elastic force to press against the inner end of the lock tongue 2 to ensure its stability. At the same time, the rubber ring 9 acts as a seal and cushioning when the lock tongue 2 enters and exits the openings on both sides of the top of the door lock body 1, reducing wear and preventing dust and moisture from entering the interior of the door lock body 1, thereby completing a series of operations.
[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A vehicle door opening safety locking device, comprising a door lock body (1), characterized in that: A lock tongue (2) is symmetrically provided at the upper end of the interior of the vehicle door lock body (1), and a vertically distributed linkage rod (3) is connected to the corresponding side of the lock tongue (2). A locking actuator (5) is provided between the bottom ends of the linkage rod (3), and the locking actuator (5) can drive the lock tongue (2) to move between a locked position and an unlocked position through the linkage rod (3). A sensor module (4) is provided at the lower end of the interior of the vehicle door lock body (1), and the sensor module (4) includes an acceleration sensor (41) and an inclination angle sensor (42). The acceleration sensor (41) is used to detect the acceleration change of the vehicle during driving, and the inclination angle sensor (42) is used to detect the rollover state of the vehicle.
2. The automobile door opening safety locking device according to claim 1, characterized in that: The locking actuator (5) comprises an upper rack (51), a gear (52) and a lower rack (53); the gear (52) is connected between the bottom ends of the linkage rod (3) via a motor; the upper rack (51) and the lower rack (53) are alternately arranged on the upper and lower sides of the gear (52) and meshed with the gear (52); and the upper rack (51) and the lower rack (53) are respectively fixedly connected to the corresponding linkage rod (3).
3. The automobile door opening safety locking device according to claim 1, characterized in that: Reinforced corner ribs (7) are provided at the four corners of the edge of the vehicle door lock body (1), and the connection between the reinforced corner ribs (7) and the outer wall of the vehicle door lock body (1) is fixed by welding.
4. The automobile door opening safety locking device according to claim 1, characterized in that: A torsion spring (8) connected to the inner wall of the vehicle door lock body (1) is provided between the lock tongues (2), and elastic blocks are provided on the outer sides of the top ends of both sides of the torsion spring (8), and a guide shaft (6) movably connected to the linkage rod (3) is also provided inside the vehicle door lock body (1).
5. The automobile door opening safety locking device according to claim 1, characterized in that: Both sides of the top of the vehicle door lock body (1) are provided with through openings that match the lock tongue (2) structure, and rubber rings (9) are provided on the inner walls of the through openings on both sides of the top of the vehicle door lock body (1).
6. The automobile door opening safety locking device according to claim 1, characterized in that: The sensor module (4) further includes a data processing unit (43), and the data processing unit (43) is electrically connected to the acceleration sensor (41) and the tilt angle sensor (42) respectively.