Roof airbag apparatus for mobility

Abstract

The present invention introduces a roof airbag device for mobility in which an airbag deploys downward from the interior roof to protect a passenger seated in a seat, and as the deployment shape of the airbag is maintained, the passenger is stably restrained by the airbag and safely protected from impact.

Description

Technology Field

[0001] The present invention relates to a roof airbag device for mobility in which an airbag deploys downward from the interior roof to protect a passenger seated in a seat. Background Technology

[0003] Generally, mobility devices are equipped with safety features to protect occupants from accidents such as collisions and rollovers. These devices include seat belts that restrain the occupant's body and airbags that mitigate the impact of the occupant colliding with the vehicle. Depending on the needs, these airbags are installed in various parts of the mobility vehicle, such as driver's airbags mounted on the steering wheel and passenger airbags mounted on the instrument panel.

[0004] Meanwhile, mobility is divided into a front space with front-seat passengers and a rear space with rear-seat passengers; however, there is a problem in which, upon a collision, rear-seat passengers are moved forward due to inertia, causing collisions between internal occupants.

[0005] In particular, autonomous mobility is increasing recently, and in the case of autonomous mobility, the seat position is configured to be adjustable in various 360-degree directions. Accordingly, the front seat occupant and the rear seat occupant can be positioned to face each other, and if a collision occurs in the mobility while the front seat occupant and the rear seat occupant are facing each other, injuries may occur due to the collision between the occupants.

[0007] The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. Prior art literature

[0009] (Patent Document 0001) KR 10-2012-0033743 A (2012.04.09) The problem to be solved

[0010] The present invention is proposed to solve these problems and aims to provide a roof airbag device for mobility that protects a passenger seated in a seat by deploying an airbag downward from the interior roof, and safely protects the passenger from impact as the deployed airbag maintains its shape. means of solving the problem

[0012] A roof airbag device for mobility according to the present invention for achieving the above objective comprises: a first cushion portion connected to the interior roof and deployed downward from the interior roof upon inflation; a second cushion portion spaced apart from the first cushion portion and connected to the interior roof, and deployed downward from the interior roof upon inflation; and a third cushion portion extending in a direction in which the first cushion portion and the second cushion portion face each other between the first cushion portion and the second cushion portion, and connected to communicate with the first cushion portion and the second cushion portion, thereby maintaining the deployed shape of the first cushion portion and the second cushion portion upon inflation.

[0013] The third cushion section is characterized by being formed to be longer than the distance between the first cushion section and the second cushion section from the indoor roof when expanded.

[0014] The third cushion part is characterized by being connected to the ends of the first cushion part and the second cushion part in communication.

[0015] The connecting portion between the first cushion portion and the third cushion portion, and the connecting portion between the second cushion portion and the third cushion portion, are characterized by having a rim that is indented inward to form a bending induction portion.

[0016] The first cushion part is characterized by being composed of a first outer cushion part that extends along the edge and expands upon unfolding, and a first dead part that forms the inner surface of the first outer cushion part and does not expand, and the second cushion part is characterized by being composed of a second outer cushion part that extends along the edge and expands upon unfolding, and a second dead part that forms the inner surface of the second outer cushion part and does not expand.

[0017] The third cushion part is characterized by being composed of a third outer cushion part that extends along the edge and communicates with the first outer cushion part of the first cushion part and the second outer cushion part of the second cushion part, and a third dead part that forms the inner surface of the third outer cushion part and is not expanded.

[0018] The third cushion section is characterized by the fact that, as the central cushion section extends horizontally across the third dead section from the third outer cushion section, the third dead section is divided into one dead zone and the other dead zone by the central cushion section.

[0019] The third cushion part is characterized by being equipped with a first tether, one end of which is connected to the indoor roof and the other end of which is connected to a dead zone on one side, and a second tether, one end of which is connected to the indoor roof and the other end of which is connected to a dead zone on the other side.

[0020] The central cushion section is composed of a pair and extends symmetrically in a spaced-apart state, thereby forming a central dead zone between the central cushion sections, and the third cushion section is characterized by being equipped with a third tether, one end of which is connected to the interior roof and the other end of which is connected to the central dead zone. Effects of the invention

[0022] The roof airbag device of the mobility, constructed with the structure described above, deploys the airbag downward from the interior roof to protect the occupant seated in the seat, and as the deployment shape of the airbag is maintained, the occupant is stably restrained by the airbag and safely protected from impact. Brief explanation of the drawing

[0024] FIG. 1 is a drawing showing a loop airbag device of mobility according to the present invention. FIG. 2 is a drawing for explaining the first cushion part, the second cushion part, and the third cushion part of the loop airbag device of the mobility shown in FIG. 1. FIG. 3 is a drawing showing the deployed state of the roof airbag device of the mobility illustrated in FIG. 1. Specific details for implementing the invention

[0025] Hereinafter, a roof airbag device for mobility according to a preferred embodiment of the present invention will be examined with reference to the attached drawings.

[0027] FIG. 1 is a drawing showing a loop airbag device of mobility according to the present invention, FIG. 2 is a drawing for explaining the first cushion part, the second cushion part, and the third cushion part of the loop airbag device of mobility shown in FIG. 1, and FIG. 3 is a drawing showing the deployed state of the loop airbag device of mobility shown in FIG. 1.

[0029] As illustrated in FIGS. 1 to 3, the roof airbag device of the mobility according to the present invention comprises: a first cushion part (100) connected to the interior roof (R) and deployed downward from the interior roof (R) upon inflation; a second cushion part (200) spaced apart from the first cushion part (100) and connected to the interior roof (R), and deployed downward from the interior roof (R) upon inflation; and a third cushion part (300) extending in a direction in which the first cushion part (100) and the second cushion part (200) face each other between the first cushion part (100) and the second cushion part (200), and connected to communicate with the first cushion part (100) and the second cushion part (200), thereby maintaining the deployed shape of the first cushion part (100) and the second cushion part (200) upon inflation.

[0030] The roof airbag (A) according to the present invention is installed in the interior roof (R) and receives gas from an inflator (I) to deploy downward from the roof (R) to protect the occupant. Accordingly, when deployed, the roof airbag (A) can be positioned between a plurality of seats provided in the interior.

[0031] As can be seen in FIG. 1, the loop airbag (A) of the present invention is composed of a first cushion portion (100), a second cushion portion (200), and a third cushion portion (300), and the first cushion portion (100), the second cushion portion (200), and the third cushion portion (300) are inflated by sharing gas supplied from an inflator (I). These first cushion portion (100), the second cushion portion (200), and the third cushion portion (300) may be formed in different shapes or different sizes depending on the protection range of the occupant.

[0032] That is, the first cushion section (100) and the second cushion section (200) are connected to the indoor roof (R) and expand downward upon expansion. These first cushion section (100) and the second cushion section (200) are spaced apart from each other and are connected via the third cushion section (300). Accordingly, when the roof airbag (A) according to the present invention is inflated, the first cushion portion (100) and the second cushion portion (200) are deployed downward, and then the third cushion portion (300) is inflated. As the deployment shape and deployment position of the first cushion portion (100) and the second cushion portion (200) are maintained by the third cushion portion (300), abnormal deployment of the first cushion portion (100) and the second cushion portion (200) is prevented, and protection of the occupant by the first cushion portion (100) and the second cushion portion (200) can be performed.

[0033] Here, the third cushion section (300) is connected to the ends of the first cushion section (100) and the second cushion section (200) in communication. As a result, when the roof airbag (A) deploys, the first cushion section (100) and the second cushion section (200) are inflated by the gas of the inflator (I), and the third cushion section (300) is inflated by receiving the gas that has passed through the first cushion section (100) and the second cushion section (200).

[0034] Accordingly, the first cushion part (100) and the second cushion part (200) have a development speed secured, and after the first cushion part (100) and the second cushion part (200) are developed, the third cushion part (300) expands to maintain the development shape and development position of the first cushion part (100) and the second cushion part (200), thereby allowing the first cushion part (100) and the second cushion part (200) to be developed accurately to the correct position.

[0035] Additionally, the third cushion part (300) is formed to be longer than the distance between the first cushion part (100) and the second cushion part (200) in the indoor roof (R) when expanded.

[0036] That is, with the first cushion part (100) and the second cushion part (200) installed in the indoor roof (R), the spacing distance according to the respective installation positions of the first cushion part (100) and the second cushion part (200) is configured to be shorter than the length when the third cushion part (300) expands, so that when the first cushion part (100) and the second cushion part (200) are fully deployed, the first cushion part (100) and the second cushion part (200) are arranged to spread out diagonally by the third cushion part (300).

[0037] As a result, when a occupant is loaded onto the first cushion section (100) or the second cushion section (200) due to a collision of the mobile, the deployed first cushion section (100) and the second cushion section (200) are arranged diagonally, thereby stably supporting the upper body of the occupant. Additionally, by the third cushion section (300) generating a supporting force against the first cushion section (100) or the second cushion section (200), the occupant loaded onto the first cushion section (100) or the second cushion section (200) can be restrained and safely protected.

[0038] That is, when a collision occurs in the mobility and the occupant is loaded onto the first cushion part (100), the first cushion part (100) comes into contact with the occupant's upper body and the third cushion part (300) comes into contact with the occupant's lower body, so that the upper body and lower body parts of the occupant are supported by the first cushion part (100) and the third cushion part (300) and are stably restrained.

[0039] Meanwhile, the connecting portion between the first cushion portion (100) and the third cushion portion (300) and the connecting portion between the second cushion portion (200) and the third cushion portion (300) have their edges sunken inward to form a bending induction portion (B).

[0040] As illustrated in FIG. 2, a bending guide (B) is formed at the edges of the first cushion part (100), the second cushion part (200), and the third cushion part (300), at the connection portion between the first cushion part (100) and the third cushion part (300) and at the connection portion between the second cushion part (200) and the third cushion part (300), so that the loop airbag (A) can perform a deformation in which the third cushion part (300) bends from the first cushion part (100) and the second cushion part (200) starting from the bending guide (B).

[0041] Here, the bending guide portion (B) is formed by the edge of the roof airbag (A) being indented inward, and the roof airbag (A) is deformed such that the first cushion portion (100) and the second cushion portion (200) bend to the third cushion portion (300) starting from the bending guide portion (B), so that the first cushion portion (100) and the second cushion portion (200) support the upper body of the occupant, and the third cushion portion (300) supports the lower body of the occupant.

[0042] Meanwhile, as illustrated in FIG. 2, the first cushion part (100) is composed of a first outer cushion part (110) that extends along the edge and expands when unfolded, and a first dead part (120) that forms the inner surface of the first outer cushion part (110) and does not expand, and the second cushion part (200) is composed of a second outer cushion part (210) that extends along the edge and expands when unfolded, and a second dead part (220) that forms the inner surface of the second outer cushion part (210) and does not expand.

[0043] That is, the first cushion part (100) and the second cushion part (200) are distinguished into an expanding area and a non-expanding area.

[0044] In detail, as an expansion area of ​​the first cushion portion (100) and the second cushion portion (200), the first cushion portion (100) has a first outer cushion portion (110) extended along the edge, and the second cushion portion (200) has a second outer cushion portion (210) extended along the edge.

[0045] Additionally, as an unexpanded area of ​​the first cushion part (100) and the second cushion part (200), a first dead part (120) is formed in the first cushion part (100) on the inner side of the first outer cushion part (110), and a second dead part (220) is formed in the second cushion part (200) on the inner side of the second outer cushion part (210).

[0046] Accordingly, in the first cushion section (100) and the second cushion section (200) of the roof airbag (A), only the first outer cushion section (110) and the second outer cushion section (210) forming the rim are inflated, thereby ensuring an inflation speed and maintaining the deployment shape of the roof airbag (A). Additionally, when the roof airbag (A) is inflated, the first dead section (120) of the first cushion section (100) or the second dead section (220) of the second cushion section (200) comes into contact with the upper body of the occupant, and the third cushion section (300) comes into contact with the lower body of the occupant along with the lower parts of the first outer cushion section (110) and the second outer cushion section (210), so that the upper and lower body parts of the occupant are supported by each cushion section and stably restrained.

[0047] Here, the third cushion portion (300) is composed of a third outer cushion portion (310) that extends along the edge and communicates with the first outer cushion portion (110) of the first cushion portion (100) and the second outer cushion portion (210) of the second cushion portion (200), and a third dead portion (320) that forms the inner surface of the third outer cushion portion (310) and is not expanded.

[0048] Thus, the third cushion section (300) is composed of a third outer cushion section (310) and a third dead section (320), and the third outer cushion section (310) is connected to the first outer cushion section (110) of the first cushion section (100) and the second outer cushion section (210) of the second cushion section (200), thereby receiving gas through the first outer cushion section (110) and the second outer cushion section (210) and expanding. That is, as the third cushion section (300) is finally expanded after the first cushion section (100) and the second cushion section (200) have expanded, the unfolded shape and unfolded position of the first cushion section (100) and the second cushion section (200) are normalized by the third cushion section (300).

[0049] In addition, the third cushion part (300) has an expansion speed secured as only the third outer cushion part (310) expands due to the unexpanded area caused by the third dead part (320).

[0050] Meanwhile, as the central cushion section (330) extends horizontally across the third dead section (320) from the third outer cushion section (310) of the third cushion section (300), the third dead section (320) is divided into one dead zone (321) and the other dead zone (322) by the central cushion section (330).

[0051] That is, the central cushion portion (330) is an expansion area in the third cushion portion (300), connected to the third outer cushion portion (310), and expands by receiving gas from the third outer cushion portion (310). This central cushion portion (330) ensures that the unfolded shape of the third cushion portion (300) is maintained together with the third outer cushion portion (310) by the expanding force. This central cushion portion (330) may be formed with a smaller diameter than the third outer cushion portion (310).

[0052] Additionally, the third dead zone (320) of the third cushion section (300) is divided into one dead zone (321) and the other dead zone (322) as the central cushion section (330) extends across the third dead zone (320). Through this, the third cushion section (300) is equipped with a first tether (410) with one end connected to the interior roof (R) and the other end connected to the one dead zone (321), and a second tether (420) with one end connected to the interior roof (R) and the other end connected to the other dead zone (322), thereby allowing the roof airbag (A) to deploy normally.

[0053] That is, the roof airbag (A) is equipped with a first tether (410) and a second tether (420) connected to the interior roof (R) and the third cushion part (300) to guide the deployment shape of the roof airbag (A). As a result, the deployment of the third cushion part (300) is limited by the length of the first tether (410) and the second tether (420), thereby preventing downward sagging, and as the deployment shape of the third cushion part (300) is guided, the deployment shape and deployment position of the first cushion part (100) and the second cushion part (200) are supported by the third cushion part (300) to ensure normal deployment.

[0054] Additionally, the first tether (410) and the second tether (420) are connected at their respective ends adjacent to the first cushion part (100) and the second cushion part (200) in the first cushion part (100) and the second cushion part (200) at the first dead zone (321) and the other dead zone (322) of the third cushion part (300), respectively, thereby guiding the shape in which the third cushion part (300) bends in the first cushion part (100) and the second cushion part (200). As a result, when the roof airbag (A) is inflated, it can be deployed in a shape in which the third cushion part (300) bends in the first cushion part (100) and the second cushion part (200).

[0055] Meanwhile, the central cushion section (330) is configured as a pair and extends symmetrically in a spaced-apart state, thereby forming a central dead zone (323) between the central cushion sections (330), and the third cushion section (300) is provided with a third tether (430) having one end connected to the indoor roof (R) and the other end connected to the central dead zone (323).

[0056] Thus, the central cushion section (330) is configured as a pair and is spaced apart from each other, thereby forming a central dead zone (323), so that the third tether (430) can be connected to the third cushion section (300) through the central dead zone (323). That is, one end of the third tether (430) is connected to the indoor roof (R) and the other end is connected through the central dead zone (323) of the third cushion section (300), thereby inducing an expanded shape of the third cushion section (300).

[0057] Additionally, the third tether (430) is fixed by being sawed into the central dead zone (323), which is an uninflated area in the third cushion section (300), thereby avoiding damage to the third cushion section (300) when the roof airbag (A) is deployed. Furthermore, the third tether (430) is connected to the center where the central dead zone (323) is located in the third cushion section (300), thereby guiding the position so that the third cushion section (300) does not move to one side, and thus the deployment positions of the first cushion section (100) and the second cushion section (200) connected to the third cushion section (300) can be deployed to the designed normal positions.

[0059] The roof airbag (A) device of the mobility, constructed with the structure described above, deploys the airbag downward from the interior roof (R) to protect the occupant seated in the seat, and as the deployment shape of the airbag is maintained, the occupant is stably restrained by the airbag and safely protected from impact.

[0061] Although the present invention has been illustrated and described in relation to specific embodiments, it will be obvious to those skilled in the art that the present invention can be modified and changed in various ways without departing from the technical spirit of the invention as provided by the following claims. Explanation of the symbols

[0063] 100: 1st cushion part 110: 1st outer cushion part 120: 1st Dead Zone 200: 2nd Cushion Zone 210: 2nd outer cushion section 220: 2nd dead section 300: 3rd cushion section 310: 3rd outer cushion section 320: 3rd Dead Zone 321: One-sided Dead Zone 322: Other side dead zone 323: Center dead zone 330: Center cushion 410: 1st tether 420:2nd Tether 430:3rd Tether

Claims

Claim 1 A roof airbag device for mobility, comprising: a first cushion portion connected to an interior roof and deployed downward from the interior roof upon inflation; a second cushion portion spaced apart from the first cushion portion and connected to the interior roof, and deployed downward from the interior roof upon inflation; and a third cushion portion extending in a direction in which the first cushion portion and the second cushion portion face each other between the first cushion portion and the second cushion portion, and connected in communication with the first cushion portion and the second cushion portion, thereby maintaining the deployed shape of the first cushion portion and the second cushion portion upon inflation; wherein the first cushion portion is composed of a first outer cushion portion that extends along the edge and expands upon inflation, and a first dead portion that forms the inner surface of the first outer cushion portion and does not expand, and the second cushion portion is composed of a second outer cushion portion that extends along the edge and expands upon inflation, and a second dead portion that forms the inner surface of the second outer cushion portion and does not expand. Claim 2 A roof airbag device for mobility according to claim 1, characterized in that the third cushion portion is formed to be longer than the distance between the first cushion portion and the second cushion portion from the interior roof when inflated. Claim 3 A roof airbag device for mobility according to claim 1, characterized in that the third cushion portion is connected to the end of the first cushion portion and the second cushion portion in communication. Claim 4 A roof airbag device for mobility according to claim 1, characterized in that the connecting portion between the first cushion portion and the third cushion portion and the connecting portion between the second cushion portion and the third cushion portion have edges that are indented inward to form a bending guide portion. Claim 5 delete Claim 6 A roof airbag device for mobility according to claim 1, characterized in that the third cushion portion is formed by a third outer cushion portion that extends along the edge and communicates with the first outer cushion portion of the first cushion portion and the second outer cushion portion of the second cushion portion, and a third dead portion that forms the inner surface of the third outer cushion portion and is not inflated. Claim 7 A roof airbag device for mobility according to claim 6, characterized in that the third cushion portion is divided into one dead zone and the other dead zone by the central cushion portion as the third dead portion is extended horizontally across the third dead portion from the third outer cushion portion. Claim 8 A roof airbag device for mobility according to claim 7, characterized in that the third cushion portion is provided with a first tether, one end of which is connected to the interior roof and the other end of which is connected to a dead zone on one side, and a second tether, one end of which is connected to the interior roof and the other end of which is connected to a dead zone on the other side. Claim 9 A roof airbag device for mobility according to claim 7, wherein the central cushion portions are composed of a pair and are extended symmetrically in a spaced-apart state to form a central dead zone between the central cushion portions, and the third cushion portion is provided with a third tether, one end of which is connected to the interior roof and the other end of which is connected to the central dead zone.

Images