Automatic air bag door opening device

Abstract

The utility model provides an automatic air bag door opening device, and relates to the technical field of vehicle safety. The device comprises an air bag trigger control module, a sensing trigger control module, a door opening condition trigger AND door and a door opening delay trigger switch, the current state of the vehicle is subjected to double verification from the angle of triggering of the air bag and the angle of triggering of the sensor through double triggering logic of'air bag triggering + sensing triggering ', so that the probability of mistaken triggering is greatly reduced; the situation of mistaken touch caused by small collision can be avoided through binding airbag triggering, door opening can be triggered in time along with the airbag when large collision occurs, and the binding sensor can judge whether door opening operation is executed or not in time according to the speed state of the current state of the vehicle. Therefore, the door opening operation is prevented from being executed in case of high-speed driving, rolling of the vehicle and unsteady parking of the vehicle; and the delay time of the door opening delay trigger switch is adjusted through the potentiometer, so that the risk that people in the vehicle are thrown out is further reduced.

Description

An airbag automatic door opening device Technical Field

[0001] This utility model relates to the field of vehicle safety technology, and in particular to an airbag automatic door opening device. Background Technology

[0002] With the advancement of technology and the development of the times, automobiles, as a common means of transportation, are increasingly used in our production and daily life. While bringing us convenience, they also make us face increasingly serious vehicle safety issues. In particular, after a collision, the occupants of the vehicle often experience severe impairments in their movement and consciousness, making it impossible to open the car doors in time, which in turn leads to more serious safety accidents.

[0003] To address this, existing technologies, such as the application with publication number CN16674492A, provide an escape device for preventing car doors from getting stuck. This device uses a door ejection mechanism and a triggering device to control the degree of the door ejection mechanism. When the door deforms, the ejection airbag in the door ejection mechanism is activated and rapidly expands. The door that is stuck due to deformation and cannot be opened manually is ejected by the expansion of the ejection airbag.

[0004] However, the device does not consider the door opening trigger conditions, which makes it impossible for the device to select the appropriate situation to trigger, thus increasing the potential risk of accidental activation, or failing to trigger in time when a risky situation is detected; in addition, the device does not consider the door opening timing, which means that the device may trigger the door opening while the vehicle is still moving or while the vehicle is still rolling, thus posing a risk of throwing the people inside the vehicle out of the vehicle.

[0005] Therefore, there is a need to provide an airbag automatic door opening device to solve the problem of triggering timing caused by the failure of existing car door opening devices to consider the door opening triggering conditions, and the risk of throwing the people inside the car out of the car due to the failure to consider the door opening timing. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide an easy-to-operate automatic airbag door opening device. It aims to perform dual verification of the vehicle's current state by considering both the airbag trigger angle and the sensor trigger angle, thereby selecting appropriate door opening trigger conditions. This reduces the probability of accidental activation at a good triggering time. Furthermore, by combining a potentiometer to adjust the delay time of the door opening delay trigger switch, it further considers the door opening timing to reduce the risk of occupants being thrown out of the vehicle.

[0007] To achieve the above objectives, this application proposes an airbag automatic door opening device for triggering and controlling the opening of a car door, including an airbag triggering control module, a sensor triggering control module, an opening condition triggering switch, and an opening delay triggering switch; wherein,

[0008] The airbag trigger control module includes an airbag trigger switch unit and an airbag trigger logic unit; wherein, the trigger point of the airbag trigger switch unit is set on the driver's side airbag of the vehicle, and the output signal terminal of the airbag trigger switch unit is electrically connected to the input signal terminal of the airbag trigger logic unit.

[0009] The sensing trigger control module includes an in-vehicle sensing unit, a sensing signal switch unit, and a sensing trigger logic unit; wherein, the signal port of the in-vehicle sensing unit is electrically connected to the signal detection terminal of the sensing signal switch unit, and the output signal terminal of the sensing signal switch unit is electrically connected to the input signal terminal of the sensing trigger logic unit.

[0010] The trigger signal terminals of the airbag trigger switch unit and the sensor trigger logic unit are electrically connected to the input port of the door opening condition trigger AND gate, respectively. The AND gate output terminal of the door opening condition trigger AND gate is electrically connected to the delay trigger terminal of the door opening delay trigger switch. The door opening signal terminal of the door opening delay trigger switch is electrically connected to the door opening control terminal of the vehicle door opening device.

[0011] As a further solution, the driver's side airbag includes an airbag bag and an airbag cover, and the trigger points of the airbag trigger switch unit include points on the airbag and points on the airbag cover; wherein, multiple points on the airbag are symmetrically arranged on the airbag bag, and the points on the airbag cover are arranged on the airbag cover.

[0012] As a further solution, the airbag trigger switch unit includes an airbag-on trigger switch and an airbag cover trigger switch; wherein, the trigger end of the airbag-on trigger switch is set to correspond to the position on the airbag, and the trigger end of the airbag cover trigger switch is set to correspond to the position on the airbag cover.

[0013] As a further solution, the trigger switch on the bladder and the trigger switch on the bladder cover adopt the same point-trigger switch structure, and the point-trigger switch includes a rotating spring, an insulating isolation plate and a contact trigger block;

[0014] The rotating spring sheet is connected to VCC and is positioned close to the contact trigger block. The insulating isolation sheet is inserted between the rotating spring sheet and the contact trigger block and is connected to the trigger point by a pull wire. The contact trigger block is configured as an output signal terminal.

[0015] As a further solution, the airbag triggering logic unit includes an on-airbag point triggering AND gate and an overall airbag triggering AND gate; wherein, the input signal terminal of the on-airbag point triggering AND gate is electrically connected to the output signal terminal of each on-airbag triggering switch, and the input signal terminal of the overall airbag triggering AND gate is electrically connected to the output signal terminals of the on-airbag point triggering AND gate and the airbag cover triggering switch, respectively.

[0016] As a further solution, the in-vehicle sensing unit includes a linear velocity sensor, an angular velocity sensor, and an acceleration sensor; wherein the linear velocity sensor, angular velocity sensor, and acceleration sensor are configured using voltage-type sensors or current-type sensors.

[0017] As a further solution, the sensing signal switching unit is configured by a potential-triggered switch corresponding to the linear velocity sensor, angular velocity sensor, and acceleration sensor; wherein, the potential-triggered switch is configured as a voltage-triggered switch or a current-triggered switch according to the corresponding voltage-type sensor or current-type sensor.

[0018] As a further solution, the sensing trigger logic unit includes a speed condition trigger AND gate and a vehicle stopping trigger AND gate; wherein, the input signal terminal of the speed condition trigger AND gate is electrically connected to the linear velocity sensor and the angular velocity sensor respectively, and the input signal terminal of the vehicle stopping trigger AND gate is electrically connected to the output signal terminal of the speed condition trigger AND gate and the acceleration sensor respectively.

[0019] As a further solution, the door opening delay trigger switch adjusts the delay time via a potentiometer and generates a door opening control signal after the delay time is reached.

[0020] Compared with related technologies, the airbag automatic door opening device provided by this utility model has the following advantages:

[0021] This invention employs a dual-trigger logic of "airbag trigger + sensor trigger," which verifies the vehicle's current state from both the airbag trigger angle and the sensor trigger angle, thereby greatly reducing the probability of accidental activation. Specifically, binding the airbag trigger can prevent accidental activation caused by minor collisions, and in the event of a major collision, it can trigger the door opening in time along with the airbag. Binding the sensor can determine whether to perform the door opening operation based on the vehicle's current speed, thus avoiding the hasty execution of the door opening operation during high-speed driving, vehicle rollover, or when the vehicle has not come to a complete stop. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0024] Figure 1 is a structural schematic diagram of an airbag automatic door opening device provided by this utility model;

[0025] Figure 2 is a schematic diagram of the airbag trigger control module structure provided by this utility model;

[0026] Figure 3 is a structural diagram of the point-triggered switch provided by this utility model when not triggered;

[0027] Figure 4 is a structural diagram of the triggered point-to-point switch provided by this utility model;

[0028] Figure 5 is a schematic diagram of the sensor trigger control module structure provided by this utility model.

[0029] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] It should be noted that the naming of each port in the embodiment is only for differentiation and limitation, and does not specifically describe its function. The corresponding connection relationship can be known meaninglessly from the accompanying drawings, or the connection relationship conventionally set when using the utility model product, or the connection relationship conventionally understood by those skilled in the art. Such terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific function. Therefore, they should not be construed as a limitation of the utility model.

[0032] Please refer to Figure 1. This application embodiment provides an airbag automatic door opening device for triggering and controlling the opening of a car door, including an airbag triggering control module, a sensor triggering control module, an opening condition triggering switch, and an opening delay triggering switch; wherein,

[0033] The airbag trigger control module includes an airbag trigger switch unit and an airbag trigger logic unit; wherein, the trigger point of the airbag trigger switch unit is set on the driver's side airbag of the car, and the output signal terminal of the airbag trigger switch unit is electrically connected to the input signal terminal of the airbag trigger logic unit;

[0034] The sensor trigger control module includes an in-vehicle sensor unit, a sensor signal switch unit, and a sensor trigger logic unit; wherein, the signal port of the in-vehicle sensor unit is electrically connected to the signal detection terminal of the sensor signal switch unit, and the output signal terminal of the sensor signal switch unit is electrically connected to the input signal terminal of the sensor trigger logic unit.

[0035] The trigger signal terminals of the airbag trigger switch unit and the sensor trigger logic unit are electrically connected to the input port of the door opening condition trigger AND gate, respectively. The AND gate output terminal of the door opening condition trigger AND gate is electrically connected to the delay trigger terminal of the door opening delay trigger switch. The door opening signal terminal of the door opening delay trigger switch is electrically connected to the door opening control terminal of the vehicle door opening device.

[0036] It should be noted that existing car door opening devices do not consider the door opening trigger conditions, resulting in low trigger accuracy or untimely triggering, which greatly reduces the device's usability. In addition, existing car door opening devices do not consider the timing of door opening, such as when the vehicle is still moving, rolling, or when the vehicle is moving at a low speed but has not yet come to a complete stop. If the door is opened rashly in these situations, it may easily cause the occupants to be thrown out of the vehicle, thereby affecting the safety of the device.

[0037] To this end, this embodiment uses a dual-trigger logic of "airbag trigger + sensor trigger" to perform dual verification of the vehicle's current state from both the airbag trigger angle and the sensor trigger angle, thereby greatly reducing the probability of accidental triggering. Among them, binding the airbag trigger can avoid accidental triggering caused by minor collisions, and can trigger the door opening in time along with the airbag in the event of a major collision. Binding the sensor can determine whether to perform the door opening operation based on the vehicle's current speed state, thereby avoiding the rash execution of the door opening operation when driving at high speed, rolling over, or when the vehicle has not come to a complete stop.

[0038] Furthermore, by setting a door opening delay trigger switch, the occurrence of passengers being thrown out of the vehicle can be further reduced. Moreover, the logic judgment part of the entire airbag automatic door opening device is set based on logic circuits, thereby avoiding malfunctions caused by software judgment and ensuring overall availability and stability.

[0039] Airbag triggering logic side:

[0040] Furthermore, a car driver's side airbag typically includes an airbag bag and an airbag cover. To avoid accidental activation, this embodiment provides trigger points on the airbag and on the airbag cover. Multiple trigger points are symmetrically arranged on the airbag bag to avoid erroneous signals from a single accidental activation. In addition, the airbag cover points are located on the airbag cover and are only fully triggered after the airbag actually deploys beyond the cover.

[0041] As shown in Figure 2, the airbag trigger switch unit is equipped with an airbag trigger switch and an airbag cover trigger switch; the trigger end of the airbag trigger switch is set to correspond to the point on the airbag, and the trigger end of the airbag cover trigger switch is set to correspond to the point on the airbag cover, which can achieve the effect of dual judgment.

[0042] A more preferred embodiment is that the trigger switch on the bag and the trigger switch on the bag cover adopt the same point-to-point trigger switch structure, and the point-to-point trigger switch includes a rotating spring, an insulating isolation plate and a contact trigger block;

[0043] Figure 3 shows the state of the point-triggered switch structure when it is not triggered. The rotating spring is connected to VCC and is set to be close to the contact trigger block. The insulating isolation piece is inserted between the rotating spring and the contact trigger block and is bound to the trigger point by a pull wire. The contact trigger block is set as the output signal terminal.

[0044] The state of the trigger switch structure when triggered is shown in Figure 4. When the driver's side airbag of the car is deployed, the trigger point is brought out. At this time, the insulating isolating piece is inserted and pulled out from between the rotating spring piece and the contact trigger block. As the rotating spring piece rebounds and rotates, it will make electrical contact with the contact trigger block, thereby connecting VCC to the contact trigger block and generating a trigger signal.

[0045] Based on this, a logic circuit is used to make judgments, including point-to-point triggering on the airbag; wherein, point-to-point triggering AND gate and airbag overall triggering AND gate are included. The input signal terminal of the point-to-point triggering AND gate is electrically connected to the output signal terminal of each triggering switch on the airbag, and the input signal terminal of the airbag overall triggering AND gate is electrically connected to the output signal terminal of the point-to-point triggering AND gate and the airbag cover triggering switch, respectively.

[0046] Sensor triggering logic side:

[0047] As shown in Figure 5, we analyzed the unsafe conditions of the vehicle and determined the different speed states of the vehicle that need to be acquired. Among them, the linear velocity sensor corresponds to the high-speed driving state of the vehicle, the angular velocity sensor corresponds to the rolling state of the vehicle, and the acceleration sensor corresponds to the stationary state of the vehicle. Therefore, the sensing unit inside the vehicle includes a linear velocity sensor, an angular velocity sensor, and an acceleration sensor, which are configured using voltage-type or current-type sensors.

[0048] Furthermore, the sensing signal switching unit is configured using potential-triggered switches corresponding to the linear velocity sensor, angular velocity sensor, and acceleration sensor; wherein, the potential-triggered switch is configured as a voltage-level trigger switch or a current-level trigger switch according to the corresponding voltage-type sensor or current-type sensor, thereby adapting to different sensor types.

[0049] Based on this, the logic circuit panel judgment is realized through the sensor trigger logic unit, including the speed condition trigger AND gate and the vehicle stop trigger AND gate; wherein, the input signal terminal of the speed condition trigger AND gate is electrically connected to the linear velocity sensor and the angular velocity sensor respectively, and the input signal terminal of the vehicle stop trigger AND gate is electrically connected to the output signal terminal of the speed condition trigger AND gate and the acceleration sensor respectively.

[0050] In practical use, we adjust the delay time of the door opening delay trigger switch by potentiometer, and generate the door opening control signal after the delay time is reached, thereby avoiding triggering the door opening at the beginning and further reducing the risk of people inside the vehicle being thrown out.

[0051] The above are only some embodiments of this application and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. An airbag automatic door opening device, used for triggering control of the car door opening mechanism, characterized in that, The system includes an airbag trigger control module, a sensor trigger control module, a door opening condition trigger, and door opening delay trigger switches. The airbag trigger control module comprises an airbag trigger switch unit and an airbag trigger logic unit. The trigger point of the airbag trigger switch unit is located on the driver's side airbag, and the output signal terminal of the airbag trigger switch unit is electrically connected to the input signal terminal of the airbag trigger logic unit. The sensor trigger control module includes a vehicle interior sensor unit, a sensor signal switch unit, and a sensor trigger logic unit. The signal port of the sensing unit is electrically connected to the signal detection terminal of the sensing signal switch unit, and the output signal terminal of the sensing signal switch unit is electrically connected to the input signal terminal of the sensing trigger logic unit. The trigger signal terminals of the airbag trigger switch unit and the sensing trigger logic unit are respectively electrically connected to the input port of the door opening condition trigger AND gate. The AND gate output terminal of the door opening condition trigger AND gate is electrically connected to the delay trigger terminal of the door opening delay trigger switch. The door opening signal terminal of the door opening delay trigger switch is electrically connected to the door opening control terminal of the vehicle door opening device.

2. The airbag automatic door opening device according to claim 1, characterized in that, The vehicle driver's side airbag includes an airbag bag and an airbag cover. The trigger points of the airbag trigger switch unit include points on the airbag and points on the airbag cover. The points on the airbag bag are symmetrically arranged in multiple places, and the points on the airbag cover are arranged on the airbag cover.

3. The airbag automatic door opening device according to claim 2, characterized in that, The airbag trigger switch unit includes an airbag-on trigger switch and an airbag cover trigger switch; wherein, the trigger end of the airbag-on trigger switch is set to correspond to the position on the airbag, and the trigger end of the airbag cover trigger switch is set to correspond to the position on the airbag cover.

4. The airbag automatic door opening device according to claim 3, characterized in that, The trigger switch on the bladder and the trigger switch on the bladder cover adopt the same point-trigger switch structure. The point-trigger switch includes a rotating spring, an insulating isolation plate, and a contact trigger block. The rotating spring is connected to VCC and is set in close contact with the contact trigger block. The insulating isolation plate is inserted between the rotating spring and the contact trigger block and is bound to the trigger point by a pull wire. The contact trigger block is set as the output signal terminal.

5. The airbag automatic door opening device according to claim 3, characterized in that, The airbag triggering logic unit includes an on-airbag point trigger AND gate and an overall airbag trigger AND gate; wherein, the input signal terminal of the on-airbag point trigger AND gate is electrically connected to the output signal terminal of each on-airbag trigger switch, and the input signal terminal of the overall airbag trigger AND gate is electrically connected to the output signal terminals of the on-airbag point trigger AND gate and the airbag cover trigger switch, respectively.

6. The airbag automatic door opening device according to claim 1, characterized in that, The vehicle interior sensing unit includes a linear velocity sensor, an angular velocity sensor, and an acceleration sensor; wherein the linear velocity sensor, angular velocity sensor, and acceleration sensor are configured using voltage-type sensors or current-type sensors.

7. The airbag automatic door opening device according to claim 6, characterized in that, The sensing signal switching unit is configured by a potential trigger switch corresponding to the linear velocity sensor, angular velocity sensor, and acceleration sensor; wherein, the potential trigger switch is configured as a voltage level trigger switch or a current level trigger switch according to the corresponding voltage-type sensor or current-type sensor.

8. The airbag automatic door opening device according to claim 7, characterized in that, The sensing triggering logic unit includes a speed condition triggering AND gate and a vehicle stopping triggering AND gate; wherein, the input signal terminal of the speed condition triggering AND gate is electrically connected to the linear velocity sensor and the angular velocity sensor respectively, and the input signal terminal of the vehicle stopping triggering AND gate is electrically connected to the output signal terminal of the speed condition triggering AND gate and the acceleration sensor respectively.

9. An automatic airbag door opening device according to claim 7, characterized in that, The door opening delay trigger switch adjusts the delay time via a potentiometer and generates a door opening control signal after the delay time is reached.

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