Airbag and airbag assembly

Abstract

Provided in the present disclosure are an airbag and an airbag assembly. The airbag is configured to provide protection on a side of a passenger, and comprises: an airbag cushion which has a deployed state and a stored state, wherein the airbag cushion is provided with a first chamber and a second chamber in fluid communication with each other; the second chamber is fixed to a front side panel of the first chamber; and in the deployed state, the first chamber has a first deployed width, and the second chamber has a second deployed width, the first deployed width being greater than the second deployed width.

Description

Airbag and airbag assembly TECHNICAL FIELD

[0001] The present disclosure relates to a safety device for a vehicle, and more particularly, to an airbag and an airbag assembly including the same. BACKGROUND

[0002] Safety devices, such as airbags, are applied to automobiles to protect occupants. Existing airbags for automobiles include, for example, an airbag disposed in a steering wheel, an airbag disposed in an instrument panel, an air curtain disposed on an inner side wall of a vehicle, and a roof airbag disposed on a roof of a vehicle in order to more rationally utilize a limited space within the automobile. When a vehicle collides or is impacted, a gas generator of an airbag receives a signal transmitted via a wire harness connected to the gas generator, and thus, is blasted. Then, gas generated by the blast inflates a folded airbag of the airbag, the inflated airbag is expanded, and then, extends from a predetermined installation position of the vehicle to a predetermined protection position around an occupant, thereby avoiding injury of the occupant by the impact.

[0003] For an airbag providing side protection to an occupant, in an expanded state, the airbag generally needs to be supported by other devices (for example, a center console) within the vehicle to maintain stability thereof.

[0004] Therefore, an airbag having a more rational support manner in an expanded state is desired. SUMMARY

[0005] The present disclosure provides an airbag and an airbag assembly, when in an expanded state, an airbag of the airbag is supported by two adjacent seats, and thus, has a more rational support manner.

[0006] An aspect of the present disclosure provides an airbag for providing protection to a side of a passenger, and includes:

[0007] an airbag having an expanded state and a stowed state,

[0008] wherein,

[0009] the airbag has a first chamber and a second chamber in fluid communication with each other, the second chamber is fixed to a front side panel of the first chamber, in the expanded state, the first chamber has a first expanded width, the second chamber has a second expanded width, and the first expanded width is greater than the second expanded width.

[0010] According to an embodiment of the present disclosure, in the expanded state, the first chamber has a first end and a second end along a width direction to abut against a first outer member and a second outer member, respectively.

[0011] According to an embodiment of the disclosure, an inner pull strap disposed inside the second chamber and an outer pull strap disposed outside the second chamber are further included.

[0012] According to an embodiment of the disclosure, one of the inner pull straps is provided, and opposite ends of the inner pull strap are fixed to left and right panels of the second chamber opposite in the width direction, respectively.

[0013] According to an embodiment of the disclosure, one of the outer pull straps is provided, and one end of the outer pull strap is fixed to a front side edge of the second chamber, and the other end of the outer pull strap is fixed to the first outer member or the second outer member.

[0014] According to an embodiment of the disclosure, the outer pull strap has a wider end and a narrower end opposite to each other, and the wider end is fixed to the front side edge of the second chamber.

[0015] According to an embodiment of the disclosure, a plurality of communication holes are provided between the first chamber and the second chamber, and the plurality of communication holes are spaced apart along the height direction of the second chamber.

[0016] According to an embodiment of the disclosure, in the deployed state, the first chamber has a first deployed height, and the second chamber has a second deployed height, and the first deployed height is less than the second deployed height.

[0017] According to an embodiment of the disclosure, in the deployed state, upper and lower ends of the second chamber are deflected by a predetermined angle with respect to the height direction of the airbag.

[0018] According to an embodiment of the disclosure, the predetermined angle is set in a range of 0-45 degrees.

[0019] Another aspect of the disclosure provides a safety airbag assembly, including the safety airbag according to any one of the above, a first seat and a second seat disposed adjacent along the width direction of the vehicle, wherein in the deployed state, the airbag is positioned between the first seat and the second seat. BRIEF DESCRIPTION OF DRAWINGS

[0020] Features, advantages, and technical effects of exemplary embodiments of the disclosure will be described below with reference to the accompanying drawings. In the drawings, the same symbols indicate the same elements, and wherein:

[0021] FIG. 1 shows a schematic view of a safety airbag and a safety airbag assembly according to an embodiment of the disclosure.

[0022] FIG. 2 shows another schematic view of a safety airbag and a safety airbag assembly according to an embodiment of the disclosure.

[0023] FIG. 3 shows a schematic view of an airbag according to an embodiment of the present disclosure.

[0024] FIG. 4 shows a schematic view of an airbag and an airbag assembly according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] Hereinafter, specific embodiments of an airbag and an airbag assembly according to the present disclosure will be described with reference to the accompanying drawings. The following detailed description and drawings are provided to illustrate the principles of the present disclosure, and the present disclosure is not limited to the preferred embodiments described, and each of the embodiments described in the present disclosure can be used alone or in any combination, and the scope of protection of the present disclosure is defined by the claims.

[0026] Further, spatially relative terms such as "upper", "lower", "left", and "right" and the like are used to describe the relative position relationship between elements shown in the drawings. Therefore, the spatially relative terms can be applied to directions different from the directions shown in the drawings when used. It is obvious that, although all these spatially relative terms refer to the directions shown in the drawings for ease of explanation, those skilled in the art can understand that directions different from the directions shown in the drawings can be used.

[0027] FIG. 1 shows a schematic view of an airbag and an airbag assembly according to an embodiment of the present disclosure. FIG. 2 shows another schematic view of an airbag and an airbag assembly according to an embodiment of the present disclosure. FIG. 3 shows a schematic view of an airbag according to an embodiment of the present disclosure. Hereinafter, an airbag and an airbag assembly according to an embodiment of the present disclosure will be described with reference to FIGS. 1 to 3.

[0028] Referring to FIGS. 1 and 2, the present disclosure provides an airbag assembly 1, and it is noted that FIG. 1 shows the airbag assembly 1 when viewed from the front of a vehicle toward the rear side, and FIG. 2 shows the airbag assembly 1 when viewed from the top of the vehicle toward the lower side. As shown in FIGS. 1 and 2, the airbag assembly 1 includes an airbag 10, a first seat 20, and a second seat 30 disposed adjacent to each other along the width direction of the vehicle. In one example, the first seat 20 and the second seat 30 are, for example, front seats of the vehicle, that is, the second seat 30 is disposed as a driver's seat, and hereinafter, the airbag 10 according to an embodiment of the present disclosure will be described in detail based on this example.

[0029] Continuing to refer to FIGS. 1 and 2. The airbag 10 is used to provide protection on the side of a passenger, and includes a gas bag 11 and a gas generator (not shown), which can be fixed at a seat frame of the first seat 20 or the second seat 30, for example. The gas bag 11 has an expanded state and a stowed state, and the gas generator is used to generate gas that enters the gas bag 11 in the stowed state and thereby causes the gas bag 11 to inflate into the expanded state. Specifically, the gas bag 11 shown in FIGS. 1 and 2 is in the expanded state. As clearly shown in the figures, the gas bag 10 is located between the first seat 20 and the second seat 30 in the expanded state, i.e., on the left side of a passenger on the first seat 20, while on the right side of a passenger on the second seat 30, thereby providing side protection for passengers on the first seat 20 and the second seat 30. When a collision, particularly a side collision, occurs, the gas bag 11 of the airbag 10 of the present disclosure is positioned between passengers on both the first seat 20 and the second seat 30, and thus can prevent passengers on the first seat 20 and the second seat 30 from being injured in a side collision. In addition, in the stowed state, the gas bag 11 is stowed after being wound or folded, for example, in a side predetermined position of the second seat 30 (e.g., in a seat frame of the second seat), and of course, the gas bag 11 can also be stowed after being wound or folded in a side predetermined position of the first seat 20 (e.g., in a seat frame of the first seat).

[0030] In the airbag 10 of the present disclosure, the gas bag 11 has a first chamber 101 and a second chamber 102 that are in fluid communication with each other, for example, a plurality of communication holes (3 communication holes are shown in FIG. 1, which are schematically shown by dashed circles) are provided between the first chamber 101 and the second chamber 102, and the plurality of communication holes are arranged at intervals along the height direction of the second chamber 102.

[0031] As shown in FIG. 1, the height direction of the second chamber 102 is consistent with the height direction of the gas bag 11, i.e., the height direction of the vehicle (the up-down direction in FIG. 1), and in the expanded state, the first chamber 101 has a first expanded height, and the second chamber 102 has a second expanded height, and the first expanded height is smaller than the second expanded height. In the example shown in FIG. 1, the height of the second chamber 102 is designed to be large enough to extend from the pelvic position of the passenger to the head position of the passenger; and the height of the first chamber 101 is designed to be small, which extends from the middle lower part of the seat back to a position at a distance from the upper edge of the seat back. The first chamber 101 and the second chamber 102 have different expanded heights, the first chamber 101 with a smaller expanded height is mainly used as a support gas bag of the gas bag 11 in the expanded state, and the second chamber 102 with a larger expanded height is mainly used as a protection gas bag for providing side protection, which will be described in more detail below.

[0032] In combination with FIG. 2, the airbag 11 has a "T" shape in the deployed state, specifically, the second chamber 102 is fixed on the front side panel of the first chamber 101. It should be noted that the "front side" and "rear side" herein are defined based on the front-rear direction of the vehicle, that is, the front side panel of the first chamber is the panel of the first chamber located in the front side direction of the vehicle, and the rear side panel of the first chamber is the panel of the first chamber located in the rear side direction of the vehicle. Moreover, as shown in FIGS. 1 and 2, in the deployed state, the first chamber 101 has a first deployed width, the second chamber 102 has a second deployed width, and the first deployed width is greater than the second deployed width. Advantageously, in the deployed state, the first ends and the second ends of the first chamber 101 along the width direction are used to abut against the first seat 20 and the second seat 30 respectively, that is, as clearly shown in FIGS. 1 and 2, the left end of the first chamber 101 abuts against the side of the first seat 20, and the right end of the first chamber 101 abuts against the side of the second seat 30. In this way, with the left end and the right end of the first chamber 101 being supported, the first chamber 101 is stably positioned between the first seat 20 and the second seat 30 and cannot sway, so that the first chamber 101 supports the second chamber 102 in a manner similar to a "base". Therefore, by means of only the seats, the airbag of the safety airbag according to the embodiment of the present disclosure can be stably supported, and therefore the airbag has a more reasonable support manner.

[0033] As a manner for limiting the deployed shape of the second chamber 102, an inner pull strap 103 is further arranged inside the second chamber 102, for example, one inner pull strap 103 is arranged, and the opposite ends of the inner pull strap 103 are fixed to the opposite left panel and right panel of the second chamber 102 in the width direction. As shown in FIG. 3, the inner pull strap 103 and the second chamber 102 are fixed together via a stitching portion, and the stitching portion can be configured to be distributed on the left panel and the right panel of the second chamber 102 along an arc-shaped path, that is, the stitching portion has a relatively large length, and therefore the connection area between the inner pull strap 103 and the second chamber 102 is relatively large. In addition, the inner pull strap 103 has a substantially rectangular shape, and the two long sides of the rectangular inner pull strap 103 are connected to the left panel and the right panel of the second chamber 102 via the stitching portion respectively, and the narrow sides of the rectangular inner pull strap 103 are used to limit the deployed shape of the second chamber 102, in particular, the deployed thickness.

[0034] Further, the airbag 10 also includes an outer pull strap 104 outside the second chamber 102, for example, one outer pull strap 104 is provided between the second chamber 102 and the second seat 30. It can be understood that when the driver on the second seat 30 leans toward the first seat 20, the outer pull strap 104 can apply a pulling force to the second chamber 102 to pull the second chamber 102 toward the second seat 30 to prevent the two passengers on the adjacent seats from colliding. As an example, one end of the outer pull strap 104 is fixed to the front side edge of the second chamber 102, and the other end of the outer pull strap 104 is fixed to the second seat 30. It can be understood that fixing one end of the outer pull strap 104 to the front side edge of the second chamber can limit the entire second chamber from leaning toward the first seat. Of course, this is only an example, and the outer pull strap between the first seat 20 and the second chamber 102 can also be provided as needed.

[0035] Further, as an example of the present disclosure, the outer pull strap has a wider end and a narrower end opposite to each other, and the wider end is fixed to the front side edge of the second chamber. In this way, the outer pull strap has a larger connection area with the second chamber, thereby providing sufficient limitation to the second chamber.

[0036] FIG. 4 shows a schematic view of an airbag and an airbag assembly according to another embodiment of the present disclosure. The airbag and the airbag assembly according to another embodiment of the present disclosure are described below with reference to FIG. 4. It should be noted that only the parts different from the above embodiments are described below, and the same parts are not described again to avoid redundancy.

[0037] As shown in FIG. 4, in the deployed state, the upper end and the lower end of the second chamber 102 are respectively deflected by a predetermined angle with respect to the height direction of the airbag 11, that is, the height direction of the vehicle. Specifically, compared with the second chamber 102 shown in FIG. 1, the second chamber 102 shown in FIG. 4 is rotated as a whole by a predetermined angle clockwise. In one example, the predetermined angle is set in the range of 0-45 degrees.

[0038] It can be understood that the top of the second chamber shown in FIG. 4 is inclined toward the driver, and such a biasing arrangement can provide better support to the head of the driver, thereby reducing the risk of injury to the head of the driver. At the same time, the bottom of the second chamber is inclined toward the passenger to support the pelvis of the passenger, in combination with the top of the second chamber being inclined toward the driver to support the head of the driver, such a combination can reduce the risk of lateral collision of the passenger and the driver.

[0039] As described above, although the exemplary embodiments of the present disclosure have been described with reference to the accompanying drawings in the description, the present disclosure is not limited to the above specific embodiments, and the scope of protection of the present disclosure should be defined by the claims and their equivalent meanings.

Claims

1. An airbag (10) for providing protection to a passenger's side, comprising: an airbag (11) having a deployed state and a stowed state, characterized in that the airbag (11) has a first chamber (101) and a second chamber (102) in fluid communication with each other, the second chamber (102) is fixed on a front side panel of the first chamber (101), in the deployed state, the first chamber (101) has a first deployed width, the second chamber (102) has a second deployed width, and the first deployed width is greater than the second deployed width. in the deployed state, the first chamber (101) has a first end and a second end along a width direction for abutting against a first outer member and a second outer member, respectively. further comprising an inner strap (103) disposed inside the second chamber (102) and an outer strap (104) disposed outside the second chamber (102). one of the inner strap (103) is provided, and opposite ends of the inner strap (103) are fixed to left and right panels of the second chamber (102) opposite in the width direction, respectively. one of the outer strap (104) is provided, one end of the outer strap (104) is fixed to a front side edge of the second chamber (102), and the other end of the outer strap (104) is fixed to the first outer member or the second outer member. the outer strap (104) has a wider end and a narrower end opposite to each other, and the wider end is fixed to the front side edge of the second chamber (102). a plurality of communication holes are provided between the first chamber (101) and the second chamber (102), and the plurality of communication holes are arranged at intervals along a height direction of the second chamber (102). in the deployed state, the first chamber (101) has a first deployed height, the second chamber (102) has a second deployed height, and the first deployed height is less than the second deployed height. in the deployed state, an upper end and a lower end of the second chamber (102) are deflected by a predetermined angle with respect to a height direction of the airbag (11), respectively. the predetermined angle is provided in a range of 0-45 degrees.

11. An airbag assembly (1), characterized in that it comprises the airbag (10) according to any one of claims 1-10, a first seat (20) and a second seat (30) disposed adjacent along a width direction of a vehicle, wherein in the deployed state, the airbag (11) is positioned between the first seat (20) and the second seat (30). ​ ​ ​ 2. The airbag (10) according to claim 1, wherein ​ 3. The airbag (10) according to claim 2, wherein ​ 4. The airbag (10) according to claim 3, wherein ​ 5. The airbag (10) according to claim 3, wherein ​ 6. The airbag (10) according to claim 5, wherein ​ 7. The airbag (10) according to claim 1, wherein ​ 8. The airbag (10) according to claim 1, wherein ​ 9. The airbag (10) according to claim 1, wherein ​ 10. The airbag (10) according to claim 9, wherein ​ ​ ​ ​

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