CN113548006A

CN113548006A - Seat airbag device and seat

Info

Publication number: CN113548006A
Application number: CN202110987151.0A
Authority: CN
Inventors: 陆豪洋; 朱隽玮; 赵轶凡
Original assignee: Ningbo Junsheng Automobile Safety System Co ltd
Current assignee: Ningbo Junsheng Automobile Safety System Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2021-10-26
Anticipated expiration: 2041-08-26
Also published as: CN113548006B

Abstract

The application provides a seat airbag device and a seat, belonging to the technical field of automobile airbags, in particular to a seat airbag device which comprises a main bag, a main inflator, an auxiliary chamber, a sensor and a control part; a main bag is disposed in the seat to be partially deployed from a side surface of the seat back, and a main inflator is detonated to inflate the main bag to cover at least one of a thoracic region, an abdominal region, and a pelvic region of the occupant; the auxiliary chamber is configured as part of the primary bladder or is separately provided in the seat, door or floor; a sensor that acquires a reclining angle of a seat back from a vehicle; a control portion configured to control the deployment of the auxiliary chamber to cover the pelvic region and/or the abdominal region of the passenger when the seatback reclining angle acquired by the sensor is greater than a prescribed value. Through the processing scheme of this application, improve the protection of seat gasbag to the passenger.

Description

Seat airbag device and seat

Technical Field

The application relates to the field of automobile airbags, in particular to a seat airbag device and a seat.

Background

Under the great trend of intelligent driving and automatic driving, the seat can be adjusted at a large angle, and passengers can have a large-angle sitting posture. The body posture of the passenger can move downwards relative to the seat, the pelvis and the abdomen of the passenger after moving downwards cannot be protected by the conventional Side Air Bag (SAB), and the head cannot be fully protected by the conventional Side Air Curtain (CURTAIN Air Bag, CAB). Therefore, the conventional side airbag cannot provide sufficient protection. Some of the new side airbags disclosed in the prior art have only been used to improve the SAB alone, and the protection is still insufficient.

Disclosure of Invention

In view of this, the present application provides a seat airbag device and a seat, which solve the problem of insufficient protection for the passenger in the prior art, and improve the protection of the seat airbag for the passenger.

On the one hand, the seat airbag device provided by the application adopts the following technical scheme:

a seat airbag apparatus includes a main bag, a main inflator, an auxiliary chamber, a sensor, and a control portion;

the main bladder pocket is disposed in the seat to be partially deployed from a side surface of the seat back, and the main inflator is explosion-inflated to cover at least one of a thoracic region, an abdominal region, and a pelvic region of the occupant;

the auxiliary chamber is configured as part of the primary bladder or is separately provided in the seat, door or floor;

a sensor that acquires a reclining angle of the seat back from a vehicle;

a control portion configured to control the auxiliary chamber to be deployed so as to cover a pelvic region and/or an abdominal region of the passenger when the seatback reclining angle acquired by the sensor is greater than a prescribed value.

Optionally, the auxiliary chamber at least partially covers a pelvic region and/or an abdominal region of the primary bladder that is offset relative to the occupant as a result of the seat back being tilted.

Optionally, the auxiliary chamber is independently disposed in the seat cushion of the seat, the auxiliary chamber is deployed from the side surface of the seat cushion of the seat, a first gas generator is disposed in the seat cushion of the seat, and an air outlet of the first gas generator is connected to the auxiliary chamber.

Optionally, the secondary chamber is deployed against the bottom of the primary bladder.

Optionally, the main bag includes main cavity and vice cavity, the vice cavity sets up the top of main cavity, and at least partial folding recess in inside the main cavity, the junction of vice cavity and main cavity is fixed through the suture in advance, main cavity bottom has the exhaust hole, the auxiliary chamber expandes the butt main cavity bottom and at least partial shutoff the exhaust hole, the increase in main cavity internal pressure is torn the suture in advance, the vice cavity follow inside the main cavity outwards expands completely.

Optionally, the abutting surfaces of the main chamber and the auxiliary chamber are provided with felts, and the main chamber and the auxiliary chamber are connected through the felts after being unfolded.

Optionally, the seat further comprises a head protection airbag, and the sub-chamber abuts against the head protection airbag after being fully deployed.

On the other hand, the seat provided by the application adopts the following technical scheme:

a seat is provided with the seat airbag device on each side.

Optionally, the seat further includes a head protection airbag, the head protection airbag includes main body chambers distributed on two sides of the seat headrest, the main body chambers are unfolded towards the front side of the seat, the main body chambers on two sides are communicated with each other through a communication chamber located at the rear portion of the seat headrest, and the main body chambers on two sides are configured to abut against the main bag after being unfolded.

Optionally, the gas generator of the head protection airbag is disposed on a back surface of the seat headrest or a back surface of the seat back.

To sum up, the application comprises the following beneficial technical effects:

1. the pelvis position and the abdomen position of the passenger in a lying state are deviated relative to a normal sitting posture, the original CAB and SAB cannot completely cover the pelvis region and the abdomen region of the passenger, the seat airbag controls the auxiliary chamber to be unfolded when the vehicle collides under the condition that the seat backrest angle is detected to be larger than a set value, and the auxiliary chamber is unfolded at the abdomen position and the pelvis position of the passenger in the lying state so as to better protect the passenger;

2. the split type arrangement of the main bag and the auxiliary chamber enables the air bags to be arranged flexibly, reduces the arrangement requirement, and the independent air bags are inflated in time, so that the time difference of the inflation in place of each air bag is small, and the unfolding speed of the seat air bag is more uniform;

3. the head protection air bag and the auxiliary chamber are independently arranged, and a part of chambers can be selectively unfolded according to different conditions to perform selective protection;

4. the head protection air bag, the main bag and the auxiliary chamber are connected through the felt, so that the restraint performance among the bags is improved, and the stability of the seat air bag after being unfolded is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the main chamber deployed in a normal sitting position of the seat of the present application;

fig. 2 is a schematic structural view illustrating the deployment of the main chamber, the sub-chamber, and the head protecting airbag when the reclining angle of the seat back of the present application is greater than a prescribed value;

FIG. 3 is a schematic top view of the primary chamber, secondary chamber, auxiliary chamber and head restraint airbag deployment of the present application;

FIG. 4 is a front view of the primary chamber, the secondary chamber, the auxiliary chamber and the head protection airbag

Description of reference numerals: 1. a primary bladder; 11. a main chamber; 12. a secondary chamber; 13. an exhaust hole; 2. a main inflator; 3. an auxiliary chamber; 31. a first gas generator; 4. felt; 5. a seat; 51. a headrest; 6. a head-protecting airbag; 61. a body chamber; 62. communicating the chambers.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The embodiment of the application provides a seat airbag device.

As shown in fig. 1 and 2, a seat airbag device includes a main bag 1, a main inflator 2, an auxiliary chamber 3, a sensor, and a control portion. It should be noted that the sensors and the controller are not shown in the figures.

The main bag 1 is disposed in the seat 5 to be partially deployed from a side surface of a backrest of the seat 5, and the main inflator 2 is explosion-inflated to inflate the main bag 1 to cover at least one of a thoracic region, an abdominal region, and a pelvic region of a passenger.

The auxiliary chamber 3 is configured as a part of the main bag 1 or is separately provided in the seat 5, the door, or the floor in the vehicle.

And a sensor connected to the rotation shaft of the seat back to acquire the inclination angle of the back of the seat 5.

And a control portion configured to control the auxiliary chamber 3 to be deployed so as to cover the pelvic region and/or the abdominal region of the passenger when the vehicle collides when the backrest inclination angle of the seat 5 acquired by the sensor is greater than a prescribed value.

The auxiliary chamber 3 at least partially covers the pelvic and/or abdominal region of the main bag 1 that is displaced relative to the occupant as a result of the tilting of the backrest of the seat 5. Specifically, the auxiliary chamber 3 of the present application is deployed on the side of the main bag 1 near the cushion of the seat 5.

When the passengers are in normal sitting positions and the vehicle is in collision, the CAB and the SAB of the automobile jointly protect the passengers. When the passenger is in a lying state after adjusting the seat 5, the angle between the backrest and the seat cushion of the seat 5 is increased, the pelvis position and the abdomen position of the passenger in the lying state are deviated relative to the normal sitting posture, and the original CAB and SAB cannot completely cover the pelvis region and the abdomen region of the passenger. The seat airbag controls the auxiliary chamber 3 to be unfolded when a vehicle collides when detecting that the backrest angle of the seat 5 is larger than a set value, specifically, the seat backrest and seat cushion angle is larger than 120 degrees, and the abdomen position and pelvis position of the auxiliary chamber 3 are unfolded when the passenger lies down, so as to better protect the passenger.

The auxiliary chamber 3 in the embodiment of the present application is independently disposed in the cushion of the seat 5, the auxiliary chamber 3 is unfolded from the side of the cushion of the seat 5, the first gas generator 31 is disposed in the cushion of the seat 5, and the air outlet of the first gas generator 31 is connected to the auxiliary chamber 3.

As part of the primary bladder 1 compared to the secondary chamber 3, i.e. the primary bladder 1 and the secondary chamber 3 are integrally provided; due to the split arrangement, the air bag is flexibly arranged, and the arrangement requirement is reduced; and the independent air bags are inflated in time, and the time difference of the air bags in place is small, so that the unfolding speed of the seat air bag is more uniform.

The auxiliary chamber 3 is expanded to abut against the bottom of the main bag 1. Specifically, the auxiliary chamber 3 abuts against a side surface of the main bag 1 close to the seat cushion of the seat 5.

As shown in fig. 2, felt 4 is provided on the contact surface of the main bag 1 and the auxiliary chamber 3, and the main bag 1 and the auxiliary chamber 3 are connected by the felt 4 after being unfolded, so that the connection between the main bag 1 and the auxiliary chamber 3 is enhanced, the main bag 1 and the auxiliary chamber 3 are restrained with each other, and the stability of the seat airbag apparatus is improved.

The main bag 1 comprises a main chamber 11 and an auxiliary chamber 12, the auxiliary chamber 12 is arranged at the top of the main chamber 11, the specific auxiliary chamber 12 is arranged on one side of the main chamber 11 close to a headrest 51 of a seat 5, at least part of the auxiliary chamber 12 is folded and recessed inside the main chamber 11, the joint of the auxiliary chamber 12 and the main chamber 11 is fixed through a pre-stitching line, the bottom of the main chamber 11 is provided with a vent hole 13, the auxiliary chamber 3 is unfolded and abutted against the bottom of the main chamber 11 and at least partially blocks the vent hole 13, the pre-stitching line is torn due to the increase of the internal pressure of the main chamber 11, and the auxiliary chamber 12 is completely unfolded outwards from the inside of the main chamber 11. When the seat 5 is in the normal sitting position, only the main chamber 11 is deployed, the auxiliary chamber 3 is not deployed, the vent hole 13 is not closed, and the auxiliary chamber 12 is not deployed.

The felt 4 of the main bag 1 is disposed at the bottom of the main chamber 11, and the felt 4 is also disposed at the upper portion of the auxiliary chamber. In order to guarantee the stable butt of main cavity 11 and auxiliary chamber 3, there is the flattening in the butt face profile edge of main cavity 11 and auxiliary chamber 3 to felt 4 sets up in the flattening, increases felt 4 area of contact, success rate and stability when improving and seat gasbag contact. The accuracy and stability of the auxiliary chamber 3 for plugging the vent hole 13 can be improved in the area of the vent hole 13 and the felt 4 surface.

As shown in fig. 2, 3 and 4, the seat 5 further includes a head protection airbag 6, and the sub-chamber 12 abuts against the head protection airbag 6 after being fully deployed. The head protecting airbag 6 is deployed on both sides of the headrest 51 of the seat 5, and abuts on a region of the sub-chamber 12 away from the main chamber 11.

As shown in fig. 4, the present application also discloses a seat 5, and both sides of the seat 5 are provided with the above-described seat airbag device. Specifically, the two sides of the seat are provided with a main chamber, an auxiliary chamber and an auxiliary chamber, so that passengers on the seat are protected more comprehensively.

As shown in fig. 3, the head protecting airbag 6 includes body chambers 61 distributed on both sides of the headrest 51 of the seat 5 and a communication chamber 62 communicating the two body chambers 61, the body chambers 61 are deployed toward the front side of the seat 5, the body chambers 61 communicate through the communication chamber 62 located at the rear of the headrest 51 of the seat 5, the body chambers 61 are configured to abut against the main bag 1 after being deployed, and the body chambers 61 cover the entire head of the passenger after being deployed. The specific contact manner is as described above.

The gas generator of the head protection airbag 6 is provided on the back surface of the headrest 51 of the seat 5 or the back surface of the backrest of the seat 5.

The seat 5 of the embodiment of the present application is configured such that when a vehicle collides while a passenger is lying down, one head protection airbag 6, the main chamber 11 and the sub-chamber 12 of the two main bladders 1, and the two sub-chambers 3 are deployed simultaneously, and are connected to each other and to each other by the felt 4, covering the head region, the chest region, the abdominal region, and the pelvic region of the member, thereby better protecting the passenger.

Moreover, the head protection airbag 6 and the auxiliary chamber 3 of the embodiment of the present application are independently arranged, and a part of the chambers can be selectively deployed according to different conditions to perform selective protection.

In order to improve the connection between the head protection airbag 6 and the main bag 1, felt 4 is provided on the contact surface between the main chamber 61 and the sub-chamber 12, and the main chamber 61 and the sub-chamber 12 are connected by the felt 4 to stabilize the position of the head protection airbag 6 after deployment and improve the protection of the head of the passenger.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A seat airbag device comprising a main bag, a main inflator, an auxiliary chamber, a sensor, and a control portion, characterized in that:

a sensor that acquires a reclining angle of the seat back from a vehicle;

2. A seat airbag arrangement according to claim 1, wherein the auxiliary chamber at least partially covers the pelvic and/or abdominal region of the primary bladder relative to the occupant due to tilting of the seat back.

3. A seat airbag apparatus according to claim 2, wherein the assist chamber is provided separately in a seat cushion of the seat, the assist chamber is deployed from a side of the seat cushion of the seat, a first gas generator is provided in the seat cushion of the seat, and an air outlet of the first gas generator is connected to the assist chamber.

4. The seat airbag apparatus of claim 3, wherein the auxiliary chamber deploys in abutment with a bottom of the primary bladder.

5. The seat airbag apparatus according to claim 4, wherein the main bag includes a main chamber and a sub-chamber, the sub-chamber is disposed at a top of the main chamber and at least partially folded to be recessed inside the main chamber, a junction of the sub-chamber and the main chamber is fixed by a pre-seam line, a bottom of the main chamber has a vent hole, the sub-chamber is deployed to abut against the bottom of the main chamber and at least partially block the vent hole, an increase in pressure inside the main chamber tears the pre-seam line, and the sub-chamber is completely deployed outward from inside the main chamber.

6. The seat airbag apparatus according to claim 5, wherein the abutting surfaces of the main chamber and the auxiliary chamber are provided with felt, and the main chamber and the auxiliary chamber are connected by the felt after being deployed.

7. The seat airbag apparatus of claim 5, wherein the seat further comprises a head protection airbag, the sub-chamber abutting the head protection airbag after full deployment.

8. A seat, characterized in that both sides of the seat are provided with seat airbag devices according to any one of claims 1 to 6, respectively.

9. The seat of claim 8, further comprising a head protection airbag comprising body chambers disposed on opposite sides of a seat headrest, the body chambers being deployed toward a front side of the seat, the body chambers on opposite sides being in communication with a communication chamber at a rear of the seat headrest, the body chambers on opposite sides being configured to abut the main bag pocket upon deployment.

10. The seat according to claim 9, wherein the gas generator of the head protection airbag is provided on the back surface of the seat headrest or the back surface of the seat back.