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CN-224228436-U - Automatic mechanical unlocking device for automobile collision door lock

CN224228436UCN 224228436 UCN224228436 UCN 224228436UCN-224228436-U

Abstract

The utility model discloses an automatic mechanical unlocking device for an automobile collision door lock, which relates to the field of automobile door locks and comprises a fixed pipe fixedly arranged in a shell near the door lock and a inhaul cable connected with an unlocking end of a locking/unlocking mechanism in the door lock, wherein a mass ball is linked after the extending end of the inhaul cable penetrates through the fixed pipe, and is in a suspension shape, when the collision acceleration of an automobile is greater than or equal to 30g, the mass ball swings and moves under the action of inertial load, and the locking/unlocking mechanism is pulled to unlock through the inhaul cable. According to the utility model, when the collision acceleration of the automobile is larger than or equal to 30g, the mass ball drives the locking/unlocking mechanism to mechanically unlock through the inhaul cable without electricity, so that the locking/unlocking mechanism can mechanically and automatically unlock even if an electronic execution link is damaged in the collision process of the automobile, and people can open the automobile door for rescue at the first time.

Inventors

  • ZHAO WU

Assignees

  • 赵伍

Dates

Publication Date
20260512
Application Date
20250606

Claims (8)

  1. 1. The automobile collision door lock automatic mechanical unlocking device is characterized by comprising a fixed pipe (4) fixedly installed and a first inhaul cable (2) connected with an unlocking end of a locking/unlocking mechanism in a door lock (1), wherein the extending end of the first inhaul cable (2) penetrates through the fixed pipe (4) and then is connected with a mass ball (6), the mass ball (6) is in a suspension shape, when the collision acceleration of an automobile is greater than or equal to 30g, the mass ball (6) swings and moves under the action of inertial load, and the locking/unlocking mechanism in the door lock (1) is pulled by the first inhaul cable (2) to unlock.
  2. 2. The automobile crash door lock automatic mechanical unlocking device according to claim 1, further comprising a housing (3) fixed near the door lock (1), wherein the housing (3) comprises a bottom plate (3.1) for installation and a housing cover (3.2) fixed on the bottom plate (3.1), and the fixing tube (4) is fixed on the bottom plate (3.1), one end of the fixing tube (4) extends outwards through the housing cover (3.2), and the first stay cable (2) extends inside and outside the housing (3) after penetrating through the fixing tube (4).
  3. 3. The automatic mechanical unlocking device for the automobile crash door lock according to claim 2, wherein the inner end of the fixing tube (4) extends into the shell cover (3.2) and is bent at an angle of 30-60 degrees along the X axis, the Y axis and the Z axis of the automobile.
  4. 4. A car crash door lock automatic mechanical unlocking device according to claim 1, 2 or 3, characterized in that the bending end of the fixing tube (4) is fixed with a flexible and bendable elastic tube (5), and the mass ball (6) is elastically pulled by the first pull rope (2) to be in a tension state by the flexible and elastic elasticity of the elastic tube (5) and is suspended against the elastic tube (5).
  5. 5. The automatic mechanical unlocking device for a car crash door lock according to claim 4, characterized in that the elastic tube (5) is a spring tube or an elastic hose.
  6. 6. The automobile crash door lock automatic mechanical unlocking device according to claim 1, further comprising a tension and stroke booster, wherein the tension and stroke booster comprises a lock catch A (7) and a lock catch B (8) which are installed near the door lock (1), the lock catch A (7) and the lock catch B (8) are meshed with each other, the tension and stroke booster further comprises a first elastic piece (9) installed near the door lock (1), the lock catch A (7) is connected with the first elastic piece (9) and the first stay rope (2), the lock catch B (8) is further connected with a second stay rope (11) and a second elastic piece (10), the other end of the second stay rope (11) is installed near the door lock (1), and the other end of the second stay rope (11) is connected with an unlocking end of a locking/unlocking mechanism in the door lock (1).
  7. 7. The automatic mechanical unlocking device for the automobile crash door lock according to claim 6, wherein when the automobile collides with the acceleration of 30g or more, the mass ball (6) swings and moves under the action of inertial load, and the stroke size and force of pulling the lock catch A (7) out of the lock catch B (8) through the first pull rope (2) and the first elastic member (9) are smaller than those of pulling the lock catch B (8) through the second elastic member (10) after the lock catch B (8) is separated from the lock catch A (7), and the stroke size and force of pulling the lock catch B (8) and the second pull rope (11) are smaller.
  8. 8. The automatic mechanical unlocking device for the automobile crash door lock according to claim 6, wherein when the automobile crash acceleration is larger than or equal to 30g, the mass ball (6) swings and moves under the inertia load to drive the first pull rope (2) to counteract the elastic force of the elastic tube (5), the pulling force of the first pull rope (2) is larger than the elastic force of the locking/unlocking mechanism at the unlocking end of the locking/unlocking mechanism in the door lock (1) connected with the second pull rope (11), the locking/unlocking mechanism in the door lock (1) is driven to unlock, or the moment formed by the pulling force of the first pull rope (2) and the lock catch A (7) after the elastic force of the elastic tube (5) is counteracted is larger than the moment formed by the elastic force of the first elastic piece (9) and the lock catch A (7) to drive the lock catch A (7) to separate from the lock catch B (8), and the lock catch B (8) rotates and pulls the locking/unlocking mechanism to unlock through the second pull rope (11).

Description

Automatic mechanical unlocking device for automobile collision door lock Technical Field The utility model relates to the field of automobile door locks, in particular to an automatic mechanical unlocking device for an automobile collision door lock. Background With the development of new energy automobiles, whether the automobile door can be opened rapidly after the automobile collides becomes a public concern of whether the automobile is safe. The existing automobile is provided with a locking/unlocking mechanism, the locking/unlocking mechanism has a speed sensing automatic locking function, and is an electromechanical device, when the automobile runs to a certain speed (generally set by manufacturers, 10-20 km/h) the automobile door lock can be automatically locked, and the automobile door is prevented from being opened by mistake. The unlocking of the locking/unlocking mechanism in the existing door lock is realized by controlling a central console and a switch near a driver seat by a vehicle-mounted computer or by manual control, and the door cannot be opened outside the automobile after the locking/unlocking mechanism is locked. According to the requirements of the passive safety regulations of the automobile, the automobile door locking system is required to meet the following collision working condition performances that 1, in the collision process (the duration time is more than or equal to 150 ms), when the acceleration born by the automobile reaches a 30g threshold value, the automobile door in an unlocking state is required to keep a mechanical locking function so as to ensure that the door lock is not bounced open, and in the collision event process (after an ECU detects a collision pulse signal and an airbag controller sends an unlocking signal), all the automobile door locks are required to execute an emergency unlocking program so as to ensure that passengers can realize barrier-free opening of the automobile door through an inner handle and an outer handle in a certain operation force range. Therefore, whether the automobile is unlocked after collision becomes a key safety function of escape after collision. If the driver and the passengers have mobility after the automobile is collided, the unlocking can be completed in the automobile, and the automobile door can be normally opened, or the automobile has a collision automatic unlocking function, and when the automatic unlocking function is normal after the automobile is collided, the door can be normally opened after the automobile is collided and stopped. However, since the automobile is constructed by a mechanical structure, and a collision transmission and damage mechanism exists in the collision process, various structures of the automobile are continuously damaged, deformed and absorbed by collision energy, and the automobile can be collided to stop after about 200ms in the front collision process, the regulation of the passenger car cannot be designed into a flat head, the head of the passenger car must be protruded, and the transmission and damage energy in the collision process is absorbed. However, the existing automatic unlocking function of automobile collision is based on the fact that an electronic sensor sends a collision signal, the electronic sensor sends the collision signal to a vehicle-mounted computer, and the vehicle-mounted computer sends an unlocking instruction to a driving motor mechanism for driving a locking/unlocking mechanism, so that the motor operates and unlocks. When the automobile is crashed and stopped, a certain time is needed, the general time is 200ms, the signal of the electronic sensor is sent out at about 20 ms-50 ms, 20 ms-30 ms is needed for judging and sending an instruction to the driving motor mechanism through the vehicle-mounted computer, and 100 ms-500 ms is needed for the driving motor mechanism to unlock the door lock in place. If the power supply on the automobile or the lead wire connecting the electronic sensor and the vehicle-mounted computer or the lead wire connecting the vehicle-mounted computer and the driving motor is damaged within 200ms when the automobile collides, the driving motor mechanism cannot be started, and the locking/unlocking mechanism cannot realize electric unlocking. The accident occurs after the new Sailisi energy M7 collides, and the lead wire connected with the driving motor mechanism is broken, so that the electronic unlocking is invalid, at the moment, the driver is unconscious and cannot unlock the automobile manually, and the outside rescue personnel cannot open the automobile door, so that the casualties are caused. The existing automatic unlocking function of the automobile collision electrons has the defects that 1, the time from the beginning to the end of the automobile collision needs 200ms, the time for collision damage to lock/unlock the electronic system needs about 100ms, the time for collision damage is shorter than 150 ms-550 ms when the electr