CN112440922A

CN112440922A - Far-end protection safety airbag, vehicle seat and vehicle

Info

Publication number: CN112440922A
Application number: CN201910833245.5A
Authority: CN
Inventors: 木飞; 周大永; 王鹏翔; 林高泽; 王勇辉; 潘如杨; 张显亮
Original assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Automobile Research and Development Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Automobile Research and Development Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2021-03-05

Abstract

The invention relates to the field of vehicle safety airbags, in particular to a far-end protection safety airbag, a vehicle seat and a vehicle, which comprises an airbag, wherein the airbag can be inflated and unfolded to an expansion position; the airbag has first, second, and third chambers in communication, which in the inflated position correspond to the head, shoulders, and hip-belly positions of the occupant, respectively. The far-end protection safety airbag is provided with hip and abdomen cavities, and the airbag is unfolded to the hip and the abdomen of a passenger in the collision process, so that the restraint effect on the hip and the abdomen of the passenger is increased, the hard contact between the passenger and the center channel is avoided, and the stability of the airbag is improved.

Description

Far-end protection safety airbag, vehicle seat and vehicle

Technical Field

The invention relates to the field of vehicle safety airbags, in particular to a far-end protection safety airbag, a vehicle seat and a vehicle.

Background

When the vehicle collides frontally or backwardly, the vehicle head or the vehicle tail has large space, so that the material is more greatly collapsed, and the force generated by collision can be buffered to a certain extent. However, when the vehicle is involved in a side collision, there is not enough space between the occupant and the colliding object to absorb the energy generated by the collision, and therefore the side collision is more likely to cause serious injury. Of these, approximately 35% of side impact injuries result from a distal side impact, and the most vulnerable to injury to occupants in the event of an impact are the head and chest of the lethal injury. It follows that a far-end side impact is extremely harmful to occupants in the vehicle. The european union third party independent vehicle security certification authority Euro-NCAP (european union new car certification program/center) has recognized the importance of far-end side impact injury protection and proposed that the far-end side impact test be incorporated into the 2020 regulatory draft.

At present, due to the fact that the bag-shaped design of the side far-end protection airbag in the market is limited by arrangement space, the far-end protection performance is found to be poor through simulation, test tests and the like. Some products are unstable in support, have no hip and abdomen cavities, have poor restraint effect on passengers, and do not protect the passengers from the hip, the abdomen, the chest to the head and the neck in an all-round way; some airbags are unstable to deploy, are easy to shift in the transverse direction and the longitudinal direction of a vehicle body, are easily blocked by the arms of passengers, and cannot reach the correct deployment position. In the actual test, the lateral offset of the dummy is too large, the development requirement cannot be met, and other products cannot meet the requirement of a head protection area and are too large in size. Therefore, it is imperative to design a far-end protection airbag that meets performance requirements and meets product constraints.

Disclosure of Invention

The invention aims to solve the technical problem that the existing side far-end protection safety airbag does not have a hip abdomen protection chamber.

In order to solve the technical problem, the embodiment of the application discloses a far-end protection safety airbag which comprises an airbag, a far-end protection safety airbag and a far-end protection safety airbag, wherein the airbag can be inflated and unfolded to an expansion position;

the airbag has first, second, and third chambers in communication, which in the inflated position correspond to the head, shoulders, and hip-belly positions of the occupant, respectively.

Furthermore, at least partial area on the air bag is provided with a locking area, and in the expansion position, the thickness of the locking area is smaller than that of other areas.

Further, the first chamber is provided with a first lock dead zone corresponding to the head position of the passenger; and/or the presence of a gas in the gas,

the second chamber is provided with a second lock dead zone corresponding to the shoulder position of the occupant.

Furthermore, the safety airbag is connected by the airbag cut pieces in a sewing or bonding mode.

Further, the safety airbag also comprises a gas generator, the gas generator is connected with the airbag, and the gas generator is used for igniting to generate gas.

Furthermore, an air bag reinforcing sheet is arranged at the joint of the gas generator and the air bag cutting sheet.

Furthermore, the gas generator is provided with a fixed structure connected with a vehicle.

In a second aspect, embodiments of the present application disclose a vehicle seat comprising a seat back and a distal protection airbag as described above;

and an air bag mounting structure is arranged on the side surface of the seat back, and the air bag is fixed on the mounting structure.

In a third aspect, embodiments of the present application disclose a vehicle comprising a seat as described above, the inflated position being in a central tunnel region of the vehicle.

Further, in the expanded position, the third chamber at least partially overlaps a secondary instrument panel of the vehicle.

By adopting the technical scheme, the far-end protection safety airbag, the vehicle seat and the vehicle have the following beneficial effects:

the far-end protection safety airbag is provided with hip and abdomen cavities, and the airbag is unfolded to the hip and the abdomen of a passenger in the collision process, so that the restraint effect on the hip and the abdomen of the passenger is increased, the hard contact between the passenger and the center channel is avoided, and the stability of the airbag is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced 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 a distal protection airbag of one embodiment of the present application in an inflated position;

FIG. 2 is a schematic view of a distal protection airbag in a deflated state according to an embodiment of the present application;

FIG. 3 is a schematic illustration of a distal protection airbag in a deployed state according to an embodiment of the present application;

FIG. 4 is a schematic view of a distal protective airbag panel according to an embodiment of the present application;

FIG. 5 is a schematic view of a distal protection airbag reinforcement panel in accordance with one embodiment of the present application;

FIG. 6 is a schematic view of a remote-protection airbag according to an embodiment of the present application in use on a vehicle;

the following is a supplementary description of the drawings:

1-an airbag; 11-air pocket cutting pieces; 10-an airbag reinforcement sheet; 110-air bag; 111-a first chamber; 112-a second chamber; 113-a third chamber; 114-a first lock dead zone; 115-a second lock dead band; 116-generator mounting holes; 120-a gas generator; 121-a fixed structure; 2-a seat; 201-seat back; 3-a central channel; 301-sub dashboard.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

With the development of the safety protection laws and regulations for automobile collision, the protection of far-end passengers in side collision of automobiles is more and more emphasized. There are no mature, stable products in the market today and existing airbags have not been able to meet the far end occupant protection requirements of the European New vehicle evaluation Specification Euro-NCAP for side impact.

As shown in fig. 1 and 2, the present embodiment discloses a distal protection airbag 1, which includes an airbag 110, wherein the airbag 110 can be inflated and deployed to an expanded position; the air bag 110 has a first chamber 111, a second chamber 112, and a third chamber 113 in communication, the first chamber 111, the second chamber 112, and the third chamber 113 corresponding to the head, shoulder, and hip-belly positions, respectively, of the occupant in the inflated position.

The safety airbag 1 is designed based on the development requirement of an actual side far-end protection project, can meet the design of a far-end airbag with performance requirements, and is compared with the best technology in the prior art, the hip and abdomen cavity design of the airbag is mainly added, and the support effect on passengers is increased. In the present embodiment, the airbag 1 can simultaneously account for the hip of the occupant, the abdomen of the occupant, the chest of the occupant, and the head of the occupant, the airbag is positioned between the seat back 201 and the center tunnel 3 after being fully deployed, the first chamber 111 is aligned with the head of the occupant, the second chamber 112 is aligned with the arm of the occupant, the third chamber 113 is aligned with the abdomen of the occupant and the hip of the occupant, and the third chamber 113 and the center tunnel 3 can have a certain amount of overlap. In some embodiments, the first chamber 111, the second chamber 112, and the third chamber 113 are divided into a head chamber, a shoulder chamber, and a hip-belly chamber according to a protective function, with adjacent chambers being in communication, and optionally, with a boundary between adjacent chambers.

As shown in fig. 3, at least some areas of the airbag 110 are provided with a locking area, which in the inflated position is less thick than other areas.

In the embodiment of the present application, the dead-lock area is disposed on the air bag 110, so that the volume of the air bag can be controlled on the premise of meeting the performance requirement of the airbag 1, and optionally, when the air bag 110 is filled with gas, the dead-lock area forms a recess on the air bag 110. In some embodiments, the dead-lock area is configured as a non-inflatable area, i.e. the upper and lower panels are directly bonded together, and the area cannot be filled and expanded by air.

As shown in fig. 1, the first chamber 111 is provided with a first lock dead zone 114, the first lock dead zone 114 corresponding to the head position of the occupant; and/or the second chamber 112 is provided with a second lock dead zone 115, the second lock dead zone 115 corresponding to a shoulder position of the occupant.

In the side impact test process, the conventional side far-end protection airbag 1 is unstable in unfolding and easy to shift in the transverse direction and the longitudinal direction of a vehicle body, and the airbag 1 is easy to be blocked by a dummy arm and cannot reach a correct unfolding position. In the embodiment of the application, the first chamber 111 and the second chamber 112 are provided with the lock dead zone in regions, the thickness of the airbag at the position is controlled, the lock dead zone is avoided from the head and the shoulder of a passenger, the interference in the unfolding process of the airbag 1 is avoided, the airbag 1 is unfolded in place, the contact between the arm and the airbag 1 is more stable, the supporting effect of the airbag is increased, and the size of the airbag can be balanced. Optionally, the shape and position of the lock dead zone may be adjusted according to the actual situation of use, so as to be suitable for different vehicle body environments and sizes of the airbag 110, and ensure the best system constraint performance. In some embodiments, the first and second lock

dead zones

114, 115 may divide the airbag 1 into a first chamber 111, a second chamber 112, and a third chamber 113. In the embodiment of the application, in the side impact test process, the safety airbag 1 can well limit the lateral displacement of the dummy when the side impact far-end collision occurs, and meanwhile, the hard contact of the heads of two dummies under the working condition of double dummies can be avoided due to the enough head protection area.

As shown in fig. 4, the airbag 1 is attached by sewing or bonding by the bag panel 11.

In the embodiment of the application, the fabric made of a suitable material, such as nylon, is cut into the air bag cut pieces 11 according to the design requirement, and the air bag 110 is obtained by sewing or adhering the air bag cut pieces 11.

The airbag 1 further includes a gas generator 120, the gas generator 120 being connected to the airbag 110, the gas generator 120 being used for ignition to generate gas.

In the embodiment of the present application, the air bag panel 11 is provided with a generator mounting hole 116, and the gas generator 120 is mounted at the generator mounting hole 116. The volume of the gas bag 110 can be controlled to be 10-50L, and the gas bag can be matched with various gas generators 120. Preferably, a dual stage gas generator 120 is used.

As shown in FIG. 5, an air bag reinforcing sheet 12 is provided at the joint between the gas generator 120 and the air bag panel 11.

In the present embodiment, the air bag reinforcing sheet 12 is attached to the air bag panel 11, and the air bag reinforcing sheet 12 and the air bag panel 11 are sewn in advance when the air bag 110 is sewn. The air bag reinforcing sheet 12 plays a role of protection and flow guide.

The gas generator 120 is provided with a fixed structure 121 to be connected to a vehicle.

In the embodiment of the present application, the gas generator 120 is provided with an airbag 1 mounting structure, and the airbag 1 may be connected to the vehicle by bolts or may be clamped to the vehicle.

The embodiment of the application discloses a vehicle seat 2, which comprises a seat back 201 and a far-end protection airbag 1; the side of the seat back 201 is provided with an airbag 1 mounting structure, and the airbag 1 is fixed on the mounting structure.

Referring to fig. 1 to 5, in the embodiment of the present application, a vehicle seat 2 includes a distal-end protection airbag 1, and with regard to the structure of the distal-end protection airbag, refer to all the ways of describing the distal-end airbag 1 above. The distal protection airbag 1 is mounted on the side of the main seat back 201 close to the central channel 3, and optionally, the distal protection airbag 1 is connected with the framework of the seat back 201 through bolts. After the gas generator 120 is ignited, the gas flows into the airbag along the air bag reinforcing panel 12 in two upper and lower paths, filling the third chamber 113, the second chamber 112, and the first chamber 111, respectively. Due to the control of the second locking dead zone 115, the thickness of the air bag in the area is thinner, so that the interference between the dummy arm and the air bag can be reduced, and meanwhile, the locking dead zone can play a role in balancing the volume of the air bag. The first chamber 111 can control the chamber size and thickness through a first lock dead zone 114 and a second lock dead zone 115, which can be satisfied by the Euro-NCAP head protection area requirements above the first lock dead zone 114.

In some embodiments, the distal protection airbag 1 is mounted to a side of the main seat back 201 adjacent to the central channel 3. In other embodiments, the vehicle seat 2 is further provided with an accommodation case for the airbag 1 accommodating the bag 110, and the airbag 1 is accommodated in the accommodation case in a contracted state.

As shown in fig. 6, the present embodiment discloses a vehicle including the seat 2 as above, in an inflated position in the region of the central tunnel 3 of the vehicle.

In the expanded position, the third chamber 113 at least partially overlaps the dash panel 301 of the vehicle.

In the embodiment of the present application, when a vehicle collides, an Electronic Control Unit (ECU) on the vehicle receives a collision signal and sends an ignition command, the gas generator 120 ignites to generate gas, the airbag 1 deploys along with the ignition signal, and during the deployment of the airbag 1, the airbag 1 deploys to the abdomen of the passenger, the chest of the passenger and the head area of the passenger under the action of the passenger, the central tunnel 3 and the seat back 201. The whole thickness of the safety airbag 1 is thinner than that of other areas at the arm of the passenger by the control of the second locking dead zone 115 of the safety airbag 1, so that the interference between the safety airbag 1 and the arm of the passenger can be reduced, the safety airbag 1 is unfolded in place, and the passenger is protected better. The locking dead zone reduces the size of the air bag 1 on the premise of meeting the requirement of the far-end protection of the side surface of the Euro-NCAP, facilitates the expansion of the air bag 1 and reduces the cost.

As shown in fig. 6, the airbag 1 is positioned between the occupant, the seat back 201 and the center tunnel 3 after being fully deployed, with the first chamber 111 aligned with the head region of the occupant, the second chamber 112 aligned with the arm region of the occupant, and the third chamber 113 aligned with the abdomen and hip region of the occupant. Preferably, there is a certain amount of overlap between the third chamber 113 and the sub dash panel 301 at the center tunnel 3. The third chamber 113 is partially overlapped with the auxiliary instrument panel 301 of the vehicle, so that on one hand, the passenger can be better restrained, and the collision energy of the passenger in the side collision of the vehicle can be absorbed, and on the other hand, the airbag can be supported by utilizing the compression of the abdomen, the hip and the auxiliary instrument panel 301 of the passenger, so that the airbag is more stable, and the larger lateral supporting force can be obtained.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A distal protection airbag comprising an airbag (110), the airbag (110) being inflatable and deployable to an inflated position;

the airbag (110) has a first chamber (111), a second chamber (112), and a third chamber (113) in communication, the first chamber (111), the second chamber (112), and the third chamber (113) corresponding to head, shoulder, and hip-belly positions, respectively, of an occupant in the inflated position.

2. The distal protection airbag of claim 1, wherein: at least partial areas of the gas bag (110) are provided with locking areas, and in the expansion position, the thickness of the locking areas is smaller than that of other areas.

3. The distal protection airbag of claim 2, wherein: the first chamber (111) is provided with a first lock dead zone (114), and the first lock dead zone (114) corresponds to the head position of an occupant; and/or the presence of a gas in the gas,

the second chamber (112) is provided with a second lock dead zone (115), the second lock dead zone (115) corresponding to a shoulder position of the occupant.

4. The distal protection airbag of claim 1, wherein: the safety airbag (1) is connected by an airbag cut-part (11) in a sewing or bonding mode.

5. The distal protection airbag of claim 4, wherein: the safety airbag (1) further comprises a gas generator (120), wherein the gas generator (120) is connected with the airbag (110), and the gas generator (120) is used for igniting to generate gas.

6. The distal protection airbag of claim 5, wherein: an air bag reinforcing sheet (12) is arranged at the joint of the gas generator (120) and the air bag cutting sheet (11).

7. The distal protection airbag of claim 6, wherein: the gas generator (120) is provided with a fixed structure (121) connected with a vehicle.

8. A vehicle seat (2) comprising a seat back (201) and a remote protection airbag (1) as claimed in any one of claims 1 to 7;

the side of the seat back (201) is provided with an air bag (1) mounting structure, and the air bag (1) is fixed on the mounting structure.

9. A vehicle, characterized in that it comprises a seat (2) according to claim 8, the inflated position being in the region of a central tunnel (3) of the vehicle.

10. The vehicle according to claim 9, characterized in that: in the expanded position, the third chamber (113) at least partially overlaps a secondary dashboard (301) of the vehicle.