CN117048545A - Headrest airbag, control method, control system and automobile - Google Patents

Abstract

The application provides a headrest airbag, a control method, a control system and an automobile, wherein the headrest airbag comprises the following components: the left side and the right side of the air bag are symmetrically provided with limiting parts, and the limiting parts are fixed through the herringbone rope belts and are kept locked and fixed through the disconnecting device; the two disconnecting devices are symmetrically fixed at two ends of the headrest framework in the headrest and are respectively connected with the corresponding limiting parts; the disconnecting device is used for locking the limiting part, and when the disconnecting device is released from the limiting part, the gas generator is used for inflating the gas bag, and the released limiting part is opened. According to the application, the air bag is arranged in the headrest, and the ejection direction of the air bag is adaptively selected by collecting collision information.

Description

Headrest airbag, control method, control system and automobile

Technical Field

The application relates to the technical field of automobiles, in particular to a headrest airbag, a control method, a control system and an automobile.

Background

In the traditional passive safety development field, in the side protection of passengers, the most important bearing component is a side air curtain, and when side collision occurs, the side air curtain is unfolded from a ceiling, so that the safety of the passengers is ensured; meanwhile, due to the existence of the side air curtain, a plurality of difficulties are brought to the whole vehicle development, and the following specific points are shown: 1. the modeling of the ceiling is limited, and the head space of the passenger is influenced; 2. the side air curtain penetrates through the side wall of the whole automobile body, more environmental parts are needed during blasting, such as inner decoration parts of a handle, a reading lamp, an air duct and the like, the failure risk of the environmental parts is large, the development period of a subsystem test is long, the development period of the whole automobile is seriously restricted, an air bag preventing the heads of front passengers from touching each other is a far-end air bag, the front passengers are ejected from the right side of a main driver, the traditional far-end air bag can generate various restrictions on the modeling of a seat, the width of the seat can be increased, and the arrangement space is insufficient.

Disclosure of Invention

The application aims to provide a headrest airbag, a control method, a control system and an automobile, wherein the airbag is arranged in the headrest, and the ejection direction of the airbag is selected in a self-adaptive manner by collecting collision information, so that the specific scheme is as follows:

the headrest airbag of the present application includes:

the left side and the right side of the air bag are symmetrically provided with limiting parts, and the limiting parts are fixed through the herringbone rope belts and are kept locked and fixed through the disconnecting device;

the two disconnecting devices are symmetrically fixed at two ends of the headrest framework in the headrest and are respectively connected with the rope belts;

the disconnecting device locks the limiting part through the rope belt, and when the disconnecting device is released from the limiting part, the gas generator inflates the gas bag to open the released limiting part.

Preferably, each breaking device comprises a first gas generator, a rivet and a flat pad, wherein the flat pad is clamped at the gas outlet of the first gas generator, the flat pad is provided with the rivet, and the rope belt is kept and fixed on the flat pad through the rivet.

Preferably, the height of the air bag is smaller than the height of the headrest, and the width of the air bag is between the headrest and the seat.

Preferably, the two limiting parts are arranged protruding from two sides of the air bag, the middle part of the rope belt is connected with the limiting parts, and two ends of the rope belt are fixed on the disconnecting device.

Preferably, a headrest skin is sleeved outside the headrest, headrest foam is filled in the headrest skin, and weakened lines are arranged at positions, opposite to the rope belts at two sides of the air bag, of the two sides of the outside of the headrest skin.

A headrest air bag control method is applied to the headrest air bag,

the method comprises the following steps:

detecting collision information of a vehicle in real time;

the method comprises the steps of acquiring collision information of a vehicle, and controlling disconnecting devices on two sides of an air bag to be disconnected with a limiting part, so that a rope belt on the limiting part is disconnected with the disconnecting devices;

meanwhile, the gas generator is controlled to inflate the gas bag, so that the limit part separated from the disconnecting device is completely opened.

The acquiring collision information of the vehicle includes:

and acquiring the position information of the collision, controlling the corresponding disconnecting device to be separated from the limiting part according to the acquired position information, controlling the gas generator to inflate the gas bag, and opening the corresponding limiting part.

A headrest airbag control system, comprising:

the collision detection module is used for detecting collision information of the vehicle in real time;

the control module is used for acquiring collision information of the vehicle, controlling the disconnecting devices at two sides of the air bag to be disconnected with the limiting parts, so that the rope belt on the limiting parts is disconnected with the disconnecting devices, and simultaneously controlling the gas generator to inflate the air bag, so that the limiting parts on the air bag disconnected with the disconnecting devices are completely opened;

the control module is also used for acquiring the position information of collision, and controlling the corresponding disconnecting device to be separated from the limiting part according to the acquired position information, so as to control the gas generator to inflate the gas bag and open the corresponding limiting part.

An automobile is provided with the headrest airbag control system.

Compared with the prior art, the application has the beneficial effects that:

according to the headrest airbag provided by the application, the left side and the right side of the airbag are opened in a self-adaptive manner according to the collision position of the vehicle through the limit parts symmetrically arranged on the two sides of the airbag, for example, the headrest airbag is unfolded from the main driving side when colliding with the main driving side of the vehicle, the headrest airbag is ejected from the co-driving side when colliding with the co-driving side of the vehicle, and the two sides of the headrest airbag can be ejected simultaneously when colliding with the two sides of the main driving side, so that the head of an occupant is protected, and the effect of replacing a side air curtain is achieved.

Drawings

FIG. 1 is a schematic top view of a headrest airbag;

FIG. 2 is a schematic view of the left side deployment of the headrest airbag;

FIG. 3 is a schematic view of the structure of the headrest airbag when deployed on the right side;

FIG. 4 is a schematic view of the structure of the disconnecting device in a locked state;

FIG. 5 is a schematic view of the structure of the disconnect device in a disconnected state;

FIG. 6 is a flow chart of a method of headrest airbag control;

FIG. 7 is a schematic view of the installation of a number of crash sensors on a vehicle;

in the figure:

1. an air bag;

101. a limit part;

102. a rope belt;

2. a collision sensor;

3. disconnecting the device;

31. a first gas generator;

32. a rivet;

33. a flat pad;

4. a headrest framework;

5. a gas generator;

6. headrest skin;

7. headrest foam;

8. a headrest back plate;

9. and a central controller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to fig. 1 to 7, and it should be apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish one from another. For example, a first may also be referred to as a second, and similarly, a second may also be referred to as a first, without departing from the scope of embodiments of the application.

A headrest airbag comprising:

an air bag 1 mounted inside the headrest and arranged along the width direction of the vehicle;

the left side and the right side of the air bag 1 are symmetrically provided with limiting parts 101, and the limiting parts 101 are fixed through a herringbone rope 102 and kept locked and fixed through a disconnecting device 3;

the gas generator 5 is arranged in the gas bag 1, and the gas bag 1 is rapidly inflated through the gas generator 5;

the two disconnecting devices 3 are symmetrically fixed at two ends of the headrest framework 4 in the headrest and are respectively connected with the rope belt 102;

the disconnecting device 3 locks the limit part 101 through the rope belt 102, and when the disconnecting device 3 is released from the limit part 101, the gas generator 5 inflates the gas bag 1 to open the released limit part 101.

Still include a plurality of collision sensor 2, in this embodiment, for four collision sensors 2, four collision sensors 2 symmetry sets up in the outside left and right sides of car, if: the two collision sensors 2 on the left side are respectively positioned on the left side of the front end of the vehicle and the position of the B column; according to actual conditions, the two collision sensors 2 on the same side can be arranged at different positions, so that the collision information of the automobile can be conveniently and accurately detected.

The four crash sensors 2 in the present application employ acceleration sensors.

The four acceleration sensors are used for detecting the collision position of the automobile in real time and outputting collision information, and the acceleration sensors, the disconnecting device 3 and the gas generator 5 are all electrically connected with the central controller 9; the central controller 9 acquires collision information detected by the acceleration sensor, controls the corresponding disconnecting device 3 to be separated from the limiting part 101, controls the gas generator 5 to inflate the gas bag 1, and opens the corresponding limiting part 101, thereby controlling the ejecting direction of the gas bag 1.

When the collision information detected by the acceleration sensor reaches a preset value, the collision information starts to be output to the outside.

It should be further noted that, the two side limiting parts 101 of the air bag 1 and the air bag 1 are integrated, and when the air bag 1 is installed, the limiting parts 101 on two sides of the air bag 1 are fixed through the rope belts 102, wherein the middle parts of the herringbone rope belts 102 are connected with the limiting parts 101, and the two tail ends of the rope belts 102 are fixed on the disconnecting device, so that the air bag 1 is self-adaptively opened on the left side or the right side or both the left side and the right side of the air bag 1 through the disconnecting device 3 according to the collision position of a vehicle, thereby protecting the head of an occupant and playing a role of replacing a side air curtain.

Further, the two disconnecting devices 3 each include a first gas generator 31, a rivet 32 and a flat pad 33, the flat pad 33 is clamped at the gas outlet of the first gas generator 31, the rivet 32 is provided on the flat pad 33, the rivet 32 passes through the limit part 101 to fix the rope belt 102 on the flat pad 33, when in use, the first gas generator 31 ignites, and the expanding gas pushes the flat pad 33 at the gas outlet of the first gas generator 31 away, so that the limit part 101 is not constrained by the rope belt 102, and the limit part 101 is opened in the process of inflating the gas bag 1 by the gas generator 5.

Further, two limiting parts 101 are arranged protruding from two sides of the air bag 1, two ends of a rope belt 102 with a herringbone structure are connected with the disconnecting device 3, and the middle part of the rope belt 102 is connected with the limiting parts.

The advantage of this design is, tie up limit part 101 through the rope belt 102 of chevron shape to the rivet 32 through disconnecting device 3 locks the rope belt 102 both ends on the limit part 101, thereby keep the locking state of limit part 101, the headrest gasbag then opens the left side or the right side or both sides of air pocket 1 simultaneously according to car collision information, thereby protect passenger's head, the advantage that this design further brought is that, headrest gasbag only adopts an air pocket 1, overall structure is simple, secondly, the environment spare is few when the gasbag is expanded, only the headrest, do not involve other parts, the subsystem development degree of difficulty is lower.

In order to further promote the head protection effect of the air bag 1, the height of the air bag 1 is slightly smaller than the height of the headrest, and the width of the air bag 1 is between the headrest and the seat.

Furthermore, a headrest framework 4 is arranged inside the headrest, a headrest skin 6 is sleeved outside the headrest, a gas generator 5 is fixedly arranged at the rear end of the headrest framework 4 in a bolt-nut connection mode, a disconnecting device 3 is fixedly connected to two ends of the headrest framework 4 respectively, headrest foam 7 is filled inside the headrest skin 6, headrest back plates 8 are further coated at the rear ends of the headrest foam 7, weakening lines are arranged at positions, opposite to rope belts 102 at two sides of the air bag 1, of the left side and the right side of the outside of the headrest skin 6, and are used for breaking the weakening lines and extending outwards when the air bag 1 is inflated, so that the head is protected.

The present application obtains the collision information of the collision sensors 2 by the central controller 9, and controls the gas generator 5 to inflate the gas bag 1 based on the obtained collision information, and simultaneously controls the disconnecting device 3 to be separated from the limiting part 101, so as to open the left side, the right side or both sides of the gas bag 1.

The headrest airbag adopted by the application can be arranged on a seat with a headrest in a main driving mode, a co-driving mode or a back row, meanwhile, the whole structure of the headrest airbag is simple, other parts are not involved after the airbag 1 is exploded, the system development is easy, the maintenance cost is low, and only the headrest needs to be replaced; the application can be actually arranged in the middle headrest of the rear row to provide head protection for the people of the rear row, and can also be applied to a headrest with special modeling, such as an encircling headrest, and the headrest body shields the head area of the person.

According to the application, the left side and the right side of the air bag 1 are opened in a self-adaptive manner according to the collision information of the vehicle, so that the protection of the head of a member is realized, meanwhile, the structure can also play a role of replacing a side air curtain, and if a main driver and a secondary driver are simultaneously provided with the headrest air bag, the function of replacing the side air curtain and a far-end air bag can be realized.

The application also provides a headrest airbag control method using the embodiment, which is applied to the headrest airbag.

The method comprises the following steps:

step 1: detecting collision information of a vehicle in real time;

step 2: acquiring collision information of the vehicle, and controlling the disconnecting devices 3 on two sides of the air bag 1 to be disconnected with the limiting part 101, so that the rope belt 102 on the limiting part 101 is disconnected with the disconnecting devices 3;

step 3: the gas generator 5 is controlled to inflate the gas bag 1, so that the limit part 101 on the gas bag 1 separated from the disconnecting device 3 is completely opened.

According to the application, the breaking devices 3 on the two sides of the air bag 1 are controlled to be separated from the limiting parts 101 by acquiring the collision information of the vehicle, and meanwhile, the air generator 5 is controlled to rapidly inflate the air bag 1, so that the limiting parts 101 separated from the air bag 1 are completely opened, and the head is protected.

The benefit of this design is that by the provision of the disconnecting device 3, the limit part 101 connected thereto can be released according to the collision information of the vehicle, thereby achieving the opening of the limit part 101 of the air bag 1.

Further, the acquiring collision information of the vehicle includes:

the position information of the collision is acquired, and the corresponding disconnecting device 3 and the limiting part 101 are controlled to release from each other according to the acquired position information, so that the gas generator 5 is controlled to inflate the gas bag 1, and the corresponding limiting part 101 is opened.

The design has the advantages that through acquiring the position information of the vehicle collision, the disconnecting device 3 at the corresponding position is controlled to be disconnected from the limiting part 101, so that the corresponding limiting part 101 is opened, through the operation, the two sides of the air bag 1 can select the ejection direction of the air bag 1 according to the collision information at different positions, and the self-adaptive opening mode of the air bag 1 is realized.

The present application also provides a headrest airbag control system using the above embodiment, including:

the collision detection module is used for detecting collision information of the vehicle in real time;

the control module is used for acquiring collision information of the vehicle, controlling the disconnecting devices 3 on two sides of the air bag 1 to be disconnected with the limiting parts 101, so that the rope belt 102 on the limiting parts 101 is disconnected with the disconnecting devices 3, and simultaneously controlling the gas generator 5 to inflate the air bag 1, so that the limiting parts 101 disconnected on the air bag 1 are completely opened;

further, the control module is further configured to obtain position information of the collision, control the corresponding disconnecting device 3 to disengage from the limiting portion 101 according to the obtained position information, and control the gas generator 5 to inflate the gas bag 1, so as to open the corresponding limiting portion 101.

The application also provides an automobile using the embodiment, wherein the automobile is provided with the headrest airbag control system.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

Claims (10)

1. A headrest airbag, characterized by comprising:

the device comprises an air bag (1), wherein limit parts (101) are symmetrically arranged on the left side and the right side of the air bag (1), the limit parts (101) are fixed through a herringbone rope belt (102), and the limit parts (101) are kept locked and fixed through a disconnecting device;

the two disconnecting devices are symmetrically fixed at two ends of the headrest framework (4) in the headrest and are respectively connected with the rope belt (102);

the disconnecting device locks the limiting part (101) through the rope belt (102), and when the disconnecting device is released from the limiting part (101), the gas generator (5) inflates the gas bag (1) to open the released limiting part (101).

2. Headrest airbag according to claim 1, characterized in that each of the disconnecting means (3) comprises a first gas generator (31), a rivet (32) and a flat pad (33), the flat pad (33) being clamped at the gas outlet of the first gas generator (31), the flat pad (33) being provided with the rivet (32), the strap (102) being held fixed to the flat pad (33) by the rivet (32).

3. Headrest airbag according to claim 1, characterized in that the height of the airbag (1) is smaller than the height of the headrest, the width of the airbag (1) being between the headrest and the seat.

4. Headrest airbag according to claim 1, characterized in that two limit parts (101) are arranged protruding from both sides of the airbag (1), and that the middle part of the strap (102) is connected to the limit parts (101), and that both ends of the strap (102) are fixed to the disconnecting device (3).

5. Headrest airbag according to claim 1, characterized in that the headrest is externally sheathed with a headrest skin (6), the headrest skin (6) is internally filled with headrest foam (7), and the positions of the two external sides of the headrest skin (6) opposite to the rope belts (102) on the two sides of the airbag (1) are provided with weakening lines.

6. A headrest airbag control method, characterized by being applied to the headrest airbag according to any one of claims 1 to 5, comprising:

detecting collision information of a vehicle in real time;

the method comprises the steps of acquiring collision information of a vehicle, and controlling disconnecting devices (3) on two sides of an air bag (1) to be disconnected with a limiting part (101), so that a rope belt (102) on the limiting part (101) is disconnected with the disconnecting devices (3);

simultaneously, the gas generator (5) is controlled to inflate the gas bag (1), so that the limit part (101) separated from the disconnecting device (3) is completely opened.

7. The method of claim 6, wherein the acquiring collision information of the vehicle comprises:

and acquiring the position information of the collision, controlling the corresponding disconnecting device (3) to be separated from the limiting part (101) according to the acquired position information, controlling the gas generator (5) to inflate the gas bag (1), and opening the corresponding limiting part (101).

8. A headrest airbag control system, comprising:

the collision detection module is used for detecting collision information of the vehicle in real time;

the control module is used for acquiring collision information of the vehicle, controlling the disconnecting devices (3) on two sides of the air bag (1) to be disconnected with the limiting parts (101), so that the rope belt (102) on the limiting parts (101) is disconnected with the disconnecting devices (3), and simultaneously controlling the gas generator (5) to inflate the air bag (1), so that the limiting parts (101) on the air bag (1) disconnected with the disconnecting devices (3) are completely opened.

9. The system according to claim 8, wherein the control module further comprises means for acquiring position information of the collision, and controlling the corresponding breaking device (3) to disengage from the restraining portion (101) according to the acquired position information, thereby controlling the gas generator (5) to inflate the gas bag (1) and opening the corresponding restraining portion (101).

10. An automobile, characterized in that the automobile is mounted with the headrest airbag control system according to any one of claims 8 to 9.