Airbag device

Abstract

The present invention relates to an airbag device capable of enhancing passenger protection by effectively protecting a passenger in the front passenger seat in the event of a new frontal offset crash. According to the present invention, provided is an airbag device comprising: a main chamber that deploys in front of a passenger toward the upper body of the passenger; stopper chambers that deploy in a shape protruding from the left and right sides of the main chamber; a support region located between the left and right stopper chambers; and a stopper bending means configured so that the amount of expansion of the support region toward the passenger is suppressed compared to the surrounding regions, thus ensuring that the stopper chambers deploy in a curved shape toward the passenger.

Description

Airbag system

[0001] The present invention relates to an airbag device that can effectively protect a passenger in the front seat during a neural offset collision, thereby enhancing the passenger protection function.

[0002] The frontal offset crash test is a frontal crash test conducted at a certain vehicle speed or higher with an angle of inclination of 15 degrees and an offset amount of 35%.

[0003] In the event of an offset collision, the upper body of the passenger in the front seat (passenger seat) is twisted toward the direction of the offset collision, and the amount of movement toward the front of the vehicle increases further. In particular, when the passenger's head comes into contact with the deployed airbag cushion, excessive rotation of the passenger's head occurs, which leads to a problem of increased head injury.

[0004] Therefore, to protect the front passenger more effectively, technology is required to prevent the passenger's head from rotating through the deployed airbag cushion.

[0005]

[0006] 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.

[0007] A prior art related to this is KR 10-2017-0002780 A.

[0008] The present invention is devised to solve the problems described above and aims to provide an airbag device that can effectively protect the passenger in the front seat during a collision with an offset, thereby enhancing the passenger protection function.

[0009] The configuration of the present invention for achieving the above-mentioned purpose may be characterized by comprising: a main chamber that unfolds toward the upper body of the passenger from the front of the passenger; a stopper chamber that unfolds in a shape protruding from the left and right sides of the main chamber; a support area located between the left and right stopper chambers; and a stopper bending means configured to suppress the expansion amount of the support area toward the passenger relative to the surroundings so that the stopper chamber unfolds in a shape that bends toward the passenger.

[0010] The passenger's head is loaded into the support area above, and the stopper chamber can cover the passenger's head from the left and right sides.

[0011] The above stopper bending means has a volume reduction portion formed in a hole shape in the support area, and the inner edge of the volume reduction portion can be connected and fixed.

[0012] The above support area is divided into an upper support area and a lower support area; an upper concave portion in the shape of a concave groove is formed on the lower side of the upper support area, and a lower concave portion in the shape of a concave groove is formed on the upper side of the lower support area, so that both ends of the upper concave portion and both ends of the lower concave portion are connected to form a volume reduction portion.

[0013] The upper concave portion and the lower concave portion can be formed in a symmetrical shape.

[0014] The left and right sides of the upper concave portion may be formed to slope downward toward the lower concave portion, and the left and right sides of the lower concave portion may be formed to slope upward toward the upper concave portion.

[0015] The upper inner surface and the lower inner surface of the above volume reduction part can be connected and fixed.

[0016] The left inner surface and the right inner surface of the above volume reduction part can be connected and fixed.

[0017] The outer end of the stopper chamber can be folded so that it faces outward.

[0018] The above stopper chamber may be formed in a trapezoidal shape with the vertical length extending inward.

[0019] Through the above-described means for solving the problem, the present invention has the effect of effectively protecting the passenger and enhancing the passenger protection function by stably supporting the rotation of the passenger's head, which is twisted toward the direction of the offset collision, by means of a stopper chamber during a neural offset collision.

[0020] FIG. 1 is a drawing illustrating the shape of an airbag cushion inflated and deployed according to the present invention.

[0021] FIG. 2 is a drawing illustrating a state in which a passenger's head is restrained by an airbag cushion according to the present invention.

[0022] FIG. 3 is a drawing showing the panels forming the airbag cushion of the present invention separated and unfolded.

[0023] FIGS. 4 and FIGS. 5 are drawings illustrating the state before and after sewing of a volume reduction part according to the present invention.

[0024] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are given the same reference number, and redundant descriptions thereof will be omitted.

[0025] The suffixes "module" and "part" for components used in the following description are assigned or used interchangeably solely for the sake of ease of writing the specification, and do not have distinct meanings or roles in themselves.

[0026] In describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art may obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the present invention.

[0027] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0028] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0029] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0030] In this specification, terms such as “comprising” or “having” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0031]

[0032] A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0033]

[0034] The airbag device of the present invention comprises: a main chamber (100) that deploys toward the upper body of a passenger from the front of the passenger; a stopper chamber (200) that deploys in a shape protruding from the left and right sides of the main chamber (100); a support area (210) located between the left and right stopper chambers (200); and a stopper bending means configured to suppress the amount of inflation of the support area (210) toward the passenger relative to the surroundings so that the stopper chamber (200) deploys in a shape that bends toward the passenger.

[0035]

[0036] Referring to FIG. 1 and FIG. 2, the airbag device of the present invention may be an airbag device applied to the front passenger seat (passenger seat), and is installed built into the crash pad (cockpit) so that when a collision occurs, the airbag cushion (10) inflates and deploys toward the front passenger.

[0037] The above airbag cushion (10) is configured to include a main chamber (100) and a stopper chamber (200).

[0038] The main chamber (100) expands and unfolds toward the front of the passenger's upper body while forming the overall contour of the airbag cushion (10) in front of the passenger.

[0039] The stopper chamber (200) expands and unfolds in a shape that protrudes from the left and right sides of the rear of the main chamber (100).

[0040] And, a support area (210) having a predetermined area is formed between the left stopper chamber (200) and the right stopper chamber (200), so that the passenger's head can be supported in the support area (210).

[0041] However, in the case of the support area (210), the amount of expansion in the direction of the passenger is suppressed through the stopper bending means, so that the left and right stopper chambers (200) are developed in a shape that bends from left to right toward the passenger, centered on the support area (210).

[0042] Therefore, when a neural offset collision occurs, the rotation of the passenger's head twisting toward the direction in which the offset collision occurs is stably supported by the stopper chamber (200), thereby effectively protecting the passenger and strengthening the passenger protection function.

[0043]

[0044] In addition, as shown in FIG. 2, the present invention loads a passenger's head onto the support area (210) and the stopper chamber (200) covers the passenger's head from the left and right sides.

[0045] That is, in the event of a neural offset collision, the head of the passenger in the front seat is loaded into the support area (210), thereby primarily protecting the passenger's head, and then the passenger's head, which rotates in the direction of the collision, is secondarily supported by the stopper chamber (200) deployed in the direction of the collision, thereby reliably preventing the risk of head injury to the passenger.

[0046] For reference, the gas filled in the main chamber (100) can flow and spread within the stopper chamber (200).

[0047] To this end, an inflator, which is a gas generating device, is connected to the inlet of the main chamber (100).

[0048] Accordingly, when a collision occurs, the airbag controller commands an ignition signal to the inflator, causing the inflator to explode, and the gas generated by the explosion of the inflator is injected into the main chamber (100), causing the main chamber (100) to expand.

[0049] Next, the gas filling the main chamber (100) fills the left and right stopper chambers (200), causing the stopper chambers (200) to expand.

[0050] Therefore, after the head of a passenger moving forward due to an offset collision is supported by the main chamber (100), the head of a passenger rotating in the direction of the collision can be supported by the stopper chamber (200).

[0051]

[0052] Meanwhile, in the present invention, the stopper bending means may have a volume reduction portion (220) formed in a hole shape in the support area (210), and the inner edge of the volume reduction portion (220) may be connected and fixed.

[0053] For example, referring to FIGS. 3 to 5, a support area (210) is provided between the left and right stopper chambers (200), and a volume reduction portion (220) is formed in the center of the support area (210).

[0054] The above volume reduction part (220) is formed in a hole shape, and the inner surfaces of the volume reduction parts (220) facing each other are pulled toward each other and connected by a sewing method to fix them, thereby filling in the hole shape of the volume reduction part (220), and the filled hole part becomes a support area (210).

[0055] In particular, as the length of the support area (210) is relatively reduced by the length pulled to fill the hole, the tension of the support area (210) becomes relatively larger compared to the surrounding area.

[0056] Accordingly, even if the gas pressure is provided equally to the support area (210) and the surrounding area, the amount of expansion in the support area (210) toward the passenger is suppressed, so that the stopper chamber (200) unfolding from the left and right sides of the support area (210) unfolds in a shape that bends toward the passenger.

[0057] Therefore, the rotation of the passenger's head, which is twisted toward the direction in which the offset collision occurs, is stably supported by the stopper chamber (200), thereby safely protecting the passenger's head.

[0058]

[0059] In addition, the support area (210) is divided into an upper support area (210a) and a lower support area (210b); an upper concave portion (220a) in the shape of a concave groove is formed on the lower side of the upper support area (210a), and a lower concave portion (220b) in the shape of a concave groove is formed on the upper side of the lower support area (210b), so that both ends of the upper concave portion (220a) and both ends of the lower concave portion (220b) are connected to form a volume reduction portion (220).

[0060]

[0061] For example, the main panel (100a) is formed in a circular rolled shape, the upper and lower ends of the main panel (100a) are sewn in an up-and-down direction in front of the passenger, and side panels (100b) are sewn on both sides of the main panel (100a) to form the main chamber (100).

[0062] And, an upper stopper panel (200a) forming the upper section of the stopper chamber (200) is formed protruding left and right on the upper left and right sides of the main panel (100a), and a lower stopper panel (200b) forming the lower section of the stopper chamber (200) is formed protruding left and right on the lower left and right sides of the main panel (100a), so that the upper stopper panel (200a) and the lower stopper panel (200b) are also sewn together according to the upper and lower sewing of the main panel (100a) to form the stopper chamber (200).

[0063] In particular, an upper concave portion (220a) is formed concavely at the upper center of the main panel (100a), and a lower concave portion (220b) is formed concavely at the lower center of the main panel (100a) facing the upper concave portion (220a), so that both ends of the upper concave portion (220a) and the lower concave portion (220b) are connected to form a hole-shaped volume reduction portion (220).

[0064]

[0065] In addition, the upper concave portion (220a) and the lower concave portion (220b) may be formed in a symmetrical shape.

[0066] For example, the upper concave portion (220a) and the lower concave portion (220b) may each be formed in the shape of a trapezoidal groove, wherein the upper concave portion (220a) is formed in a trapezoidal shape with a shorter length on the upper inner surface and the lower concave portion (220b) is formed in a trapezoidal shape with a shorter length on the lower inner surface.

[0067] Accordingly, the left and right sides of the upper concave portion (220a) are formed to slope downward toward the lower concave portion (220b) and are connected to both ends of the lower concave portion (220b), and the left and right sides of the lower concave portion (220b) are formed to slope upward toward the upper concave portion (220a) and are connected to both ends of the upper concave portion (220a), so that both ends of the upper concave portion (220a) and the lower concave portion (220b) can be naturally sewn together.

[0068]

[0069] In addition, as an example of the volume reduction part (220), the upper inner surface and the lower inner surface of the volume reduction part (220) in the present invention may be connected and fixed.

[0070] That is, as shown in FIGS. 4 and 5, the inner surface of the upper concave portion (220a) forming the upper shape of the volume reduction portion (220) is sewn together with the inner surface of the lower concave portion (220b) forming the lower shape of the volume reduction portion (220), thereby filling the hole shape of the volume reduction portion (220), and the filled portion becomes a support area (210) so that the passenger's head can be supported.

[0071]

[0072] In addition, as another example of the volume reduction part (220), the left inner surface and the right inner surface of the volume reduction part (220) in the present invention may be connected and fixed.

[0073] That is, although not illustrated in the drawing, the trapezoidal concave portion forming the volume reduction portion (220) can be formed on the left and right sides respectively, unlike Fig. 4, where the concave portion is formed in the up and down directions.

[0074] Accordingly, the inner surface of the left concave portion forming the left shape of the volume reduction portion (220) is sewn together with the inner surface of the right concave portion forming the right shape of the volume reduction portion (220), thereby filling in the hole shape on the volume reduction portion (220), and the filled portion becomes a support area (210) so that the passenger's head can be supported.

[0075]

[0076] Meanwhile, as shown in FIGS. 4 and 5, the present invention is an airbag device characterized in that the outer end of the stopper chamber (200) is folded in a state facing outward.

[0077] That is, by folding while maintaining the same shape as the unfolded shape of the stopper chamber (200), the stopper chamber (200) is unfolded more quickly.

[0078] For reference, the stopper chamber (200) can be formed with a shorter or longer vertical length to adjust the vertical length of the stopper chamber (200), and the left and right length of the stopper chamber (200) can also be formed with a shorter or longer horizontal length to adjust the left and right length of the stopper chamber (200).

[0079]

[0080] In addition, the stopper chamber (200) may be formed in a trapezoidal shape with an inwardly elongated vertical length.

[0081] That is, the vertical length of the stopper chamber (200) near the support area (210) is formed to be relatively longer than the vertical length of the remaining part.

[0082] Accordingly, by expanding the vertical protection area that supports the passenger's head from the left and right, the passenger's head rotating in the offset collision direction is more stably supported and restrained.

[0083]

[0084] As described above, the present invention effectively protects the passenger and enhances the passenger protection function by stably supporting the rotation of the passenger's head, which is twisted toward the direction of the offset collision, by means of the stopper chamber (200) during a neural offset collision.

[0085]

[0086] Meanwhile, although the present invention has been described in detail only with respect to the specific examples mentioned above, it is obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical spirit of the invention, and it is natural that such modifications and variations fall within the scope of the appended claims.

[0087] [Explanation of the symbol]

[0088] 10 : Airbag cushion

[0089] 100 : Main Chamber

[0090] 100a : Main panel

[0091] 100b : Side panel

[0092] 200 : Stopper chamber

[0093] 200a : Upper stopper panel

[0094] 200b : Lower stopper panel

[0095] 210 : Support area

[0096] 210a : Upper support area

[0097] 210b : Lower support area

[0098] 220 : Volume reduction section

[0099] 220a : Upper concave part

[0100] 220b : Lower concave part

Claims

A main chamber that unfolds from the front of the passenger toward the passenger's upper body; A stopper chamber that unfolds in a shape protruding from the left and right sides of the main chamber; Support area located between the left and right stopper chambers; An airbag device comprising: a stopper bending means configured to suppress the amount of inflation toward the passenger in the support area relative to the surroundings, so that the stopper chamber unfolds into a shape that bends toward the passenger. In claim 1, An airbag device characterized by the passenger's head being loaded into the support area and the stopper chamber covering the passenger's head from the left and right sides. In claim 1, The above stopper bending means is, An airbag device characterized in that a volume reduction portion is formed in a hole shape in the above-mentioned support area, and the inner edge of the volume reduction portion is connected and fixed. In claim 3, The above support area is divided into an upper support area and a lower support area; An airbag device characterized by having an upper concave portion in the shape of a concave groove formed on the lower side of the upper support area and a lower concave portion in the shape of a concave groove formed on the upper side of the lower support area, such that both ends of the upper concave portion and both ends of the lower concave portion are connected to form a volume reduction portion. In claim 4, An airbag device characterized by the fact that the upper concave portion and the lower concave portion are formed in a symmetrical shape. In claim 4, An airbag device characterized in that the left and right sides of the upper concave portion are formed to slope downward toward the lower concave portion, and the left and right sides of the lower concave portion are formed to slope upward toward the upper concave portion. In claim 3, An airbag device characterized by the upper inner surface and lower inner surface of the volume reduction part being connected and fixed. In claim 3, An airbag device characterized by the left inner surface and the right inner surface of the volume reduction part being connected and fixed. In claim 1, An airbag device characterized by the outer end of the stopper chamber being folded in a state facing outward. In claim 1, An airbag device characterized in that the stopper chamber is formed in a trapezoidal shape with the vertical length extending inward.

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