Curtain airbag device

Abstract

The embodiment discloses a curtain airbag device, which comprises an airbag cushion containing a cushion main body and a buckle belt winding the cushion main body and fixing and holding the cushion main body in a folded state; and a ramp component installed on a roof longitudinal beam of a vehicle through a fastener and used for placing and supporting the airbag cushion. The fastener is connected with a connecting hole formed on the ramp component, so that the ramp component is fixed on the roof longitudinal beam. However, the fastener is not connected with the airbag cushion.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0161974, filed on November 14, 2024, with the Korean Intellectual Property Office. The entire contents of that application are incorporated herein by reference in their entirety. Technical Field

[0003] This utility model relates to a curtain-type airbag device, specifically, to a curtain-type airbag device that can protect occupants in the event of a vehicle collision. Background Technology

[0004] The vehicle is equipped with multiple airbags to protect occupants from collisions. Among these airbags, curtain airbags protect occupants from personal injury caused by lateral impacts or debris from the vehicle during a collision.

[0005] This type of curtain airbag extends along the roof longitudinal beam of the vehicle body and is mounted on the roof longitudinal beam via a latch provided on the curtain airbag. Here, the curtain airbag is mounted on the side of the vehicle body by securing the latch to the vehicle body with bolts and washers.

[0006] However, because the latches are made of soft fabric, even when bolted to the vehicle body, they will sag under the load of the curtain airbag. Furthermore, when external forces are applied to the latches, deformation or tearing can occur, causing the curtain airbag to shift laterally. This reduces the efficiency of assembly processes such as securing the airbag to the vehicle body, thereby decreasing production efficiency.

[0007] Meanwhile, although the technology of integrating the plate-like support with the buckle is used, the strong impact when the airbag deploys can pull on the buckle, subjecting the bolt to external force. This can cause the buckle to break and separate from the curtain airbag, or the bolt to separate from the support and damage the support, resulting in flying debris. Therefore, improvements are necessary. Utility Model Content

[0008] This utility model aims to introduce, in a simplified form, some concepts that will be elaborated in detail in the following specific embodiments. This utility model is not intended to identify key or essential features of the technical subject matter to be protected, nor is it intended to assist in determining the scope of protection of the patent claims for the technical subject matter to be protected.

[0009] This utility model relates to a curtain-type airbag device. By improving the installation structure of the curtain-type airbag, deformation of the curtain-type airbag device can be prevented, and assembly efficiency can be improved.

[0010] The purpose of this invention is not limited to the objectives described above. Other objectives not described will be clearly understood by those skilled in the art from the following description.

[0011] According to one aspect of the present invention, a curtain-type airbag device is provided. The device includes an airbag cushion and a ramp member. The airbag cushion includes a curtain body and a hook-and-loop strap that wraps around the cushion body and binds the cushion body into a folded shape. The ramp member is mounted on a vehicle roof longitudinal beam by fasteners. The airbag cushion is placed and supported on the ramp member, wherein the fasteners are connected to connecting holes formed in the ramp member but not to the airbag cushion, thereby securing the ramp member to the roof longitudinal beam.

[0012] The fastener may include a strip portion wrapped around a folded, rolled-up pad body, and a fastener mounting portion extending through the strip portion and connected to the ramp member, the fastener mounting portion being provided with a connecting ring for engaging with the ramp member at its end portion.

[0013] At the upper end of the pad body, the snap-on mounting portion can be arranged to extend toward the lower end of the pad body, while the strip portion can be arranged to extend in the opposite direction to the snap-on mounting portion.

[0014] The strip portion may have an opening through which the snap-on mounting portion can pass and be fastened, thereby securing the pad body with the snap-on strap.

[0015] The ramp component may include a support portion and a fixing portion, with the pad body placed on the support portion and the fixing portion extending upward from the upper end of the support portion; and the fixing portion may be inserted and connected to the snap-on mounting portion via a connecting ring.

[0016] The connecting hole can be formed to pass through the fixing part, and with the fixing part inserted into the connecting ring, the connecting hole can be positioned above the connecting ring.

[0017] The support portion includes a first part and a second part, the first part being continuously connected to the fixing part and extending vertically; the second part extending forward from the lower end of the first part. The fixing part may be disposed on each of two opposite edges of the first part in the longitudinal direction.

[0018] The ramp component may also include a cover portion, which is placed on the airbag cushion when the airbag cushion is placed on the support portion.

[0019] The cover portion can extend forward from the upper end of the support portion and accommodates an airbag cushion between the cover portion and the support portion.

[0020] The curtain-type airbag device may also include a retaining strap that, when the airbag cushion is placed in the ramp member, wraps integrally around the ramp member and the airbag cushion, wherein the retaining strap may be configured to break when the airbag deploys. Attached Figure Description

[0021] Figure 1 A curtain-type airbag device according to an embodiment of the present invention is shown;

[0022] Figure 2 A curtain-type airbag device combining an airbag cushion with a ramp member according to an embodiment is shown;

[0023] Figure 3 The airbag cushion in the curtain-type airbag device is shown;

[0024] Figure 4 The buckle strap in the airbag cushion is shown;

[0025] Figure 5 The ramp component in the curtain airbag is shown;

[0026] Figure 6 The connecting ring of the fastener strap and the fixing part of the ramp member connected to the connecting ring are shown;

[0027] Figure 7 A curtain-type airbag device combining an airbag cushion with a ramp member is shown according to another embodiment;

[0028] Figure 8 yes Figure 7 Diagram showing the airbag cushion and fixing pins.

[0029] In all the accompanying drawings and detailed embodiments, unless otherwise stated or specified, the same or similar reference numerals may be construed as referring to the same or similar elements, features, and structures. These drawings may not be drawn to scale, and the relative sizes, proportions, and methods of representation of elements may be exaggerated for clarity, illustrativeness, and convenience. Detailed Implementation

[0030] The following detailed descriptions are intended to help readers fully understand the methods, apparatus, and / or systems described herein. However, upon fully understanding the disclosure of this application, it will become apparent that various variations, modifications, and equivalents exist in the methods, apparatus, and / or systems described herein. For example, the sequences of operations described herein are merely illustrative and are not limited to the order listed herein, but can be modified based on an understanding of the disclosure of this application, except where a specific order must be followed.

[0031] The features described herein can be implemented in various forms and are not limited to the examples described herein. Rather, the examples described herein are merely illustrative of a number of possible implementations of the methods, devices, and / or systems described herein, which will become clear upon understanding the disclosure of this application.

[0032] Throughout the specification, when describing a component or element as "on," "connected to," "coupled to," or "joined to," that component, element, or layer may be directly on or "connected to" another component, element, or layer; or one or more other components, elements, or layers may reasonably exist in between. When describing a component, element, or layer as "directly on," "directly connected to," "directly coupled to," or "directly joined" to another component, element, or layer, no other components, elements, or layers can exist in between. Similarly, expressions such as "between," "immediately between," "adjacent to," and "immediately adjacent to" can also be understood in accordance with the above interpretation.

[0033] The advantages and features of this disclosure, as well as methods for achieving these advantages and features, will become clear from the following detailed description of the embodiments and accompanying drawings. However, this disclosure is not limited to the embodiments disclosed herein, but can be implemented in various forms. The embodiments in this disclosure are intended to fully disclose the disclosure and enable those skilled in the art to fully understand its scope. This disclosure is defined only by the scope of the appended claims. Meanwhile, the terminology used in this specification is for explaining the embodiments and not for limiting the disclosure.

[0034] Meanwhile, the terms used in this specification (such as "first," "second," A, B, (a), (b), etc.) are used only to describe components. None of these technical terms are used to define the nature, order, or sequence of the corresponding components, but only to distinguish the corresponding component from other components. For example, the first component may be referred to as the second component; similarly, the second component may also be referred to as the first component.

[0035] Throughout the specification, when a component is described as "connected to" or "coupled to" another component, it may be directly "connected" or "coupled" to that other component, or one or more other components may be present in between. In contrast, when an element is described as "directly connected to" or "directly coupled to" another element, no other elements can be present in between.

[0036] In the description of this embodiment, if any element is described as being formed below or above another element, this description includes both cases where the two elements are in direct contact with each other and cases where the two elements are in indirect contact and separated by one or more other elements. Furthermore, when describing an element as being formed below or above another element, this description may also include cases where an element is formed above or below another element.

[0037] The singular forms such as “a” and “one” also encompass their plural forms, unless the context clearly indicates otherwise. It should also be clarified that terms such as “comprises / comprising” / “includes / including” are used herein to indicate the presence of mentioned features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and combinations thereof.

[0038] Figures 1 to 8 A curtain-type airbag device and its components according to an embodiment of the present invention are shown.

[0039] A curtain airbag device 1 according to an embodiment of the present invention can extend along the longitudinal direction of the vehicle above the front and rear doors (not shown) and can be installed on the roof longitudinal beam of the vehicle. The curtain airbag device 1 can be connected to an inflation device 10 that generates gas.

[0040] Referring to the accompanying drawings, the curtain-type airbag device 1 according to an embodiment of the present invention includes an airbag cushion 100 and a ramp member 200.

[0041] The airbag cushion 100 may have a shape that extends in the longitudinal direction of the vehicle and may be folded into a roll and provided. The airbag cushion 100 includes a cushion body 110 and a buckle strap 120.

[0042] The cushion body 110 can be configured to form an airbag for protecting the head and upper body of the occupants and has a shape that extends in the longitudinal direction of the vehicle.

[0043] In the event of a vehicle collision, the cushion body 110 expands downwards under the expansion of the gas generated from the inflation device 10, and the cushion body 110 is positioned between the occupants and the vehicle door to protect the occupants.

[0044] The pad body 110 may be made of a flexible fabric material. Alternatively, the pad body 110 may also be made of a synthetic fiber material, but the material is not limited to this.

[0045] As attached Figures 2 to 4 As shown, the hook and loop strap 120 can wrap around and bind the folded pad body 110 to maintain its folded shape. The hook and loop strap 120 can be configured as multiple straps at the upper end of the pad body 110 and arranged at certain intervals in the longitudinal direction of the pad body 110.

[0046] The fastener 120 may include a strip portion 121 that is wound around and folded into a roll of the pad body 110 and a fastener mounting portion 122 that passes through the strip portion 121 and is connected to the ramp member 200.

[0047] The strip portion 121 can be configured such that one end is connected to the upper end of the pad body 110, and the strip portion 121 extends upward from the upper end of the pad body 110. The strip portion 121 may have an opening 121a at its other extended end, through which the latching mounting portion 122 can extend or pass. Furthermore, the strip portion 121 may also have a tear line 121b, which will break under the unfolding pressure of the pad body 110.

[0048] The snap-on mounting portion 122 can be configured such that one end of it is connected to the strip portion 121 at the upper end of the pad body 110, and the snap-on mounting portion 122 extends toward the lower end of the pad body 110. That is, the snap-on mounting portion 122 can be configured to extend in the opposite direction to the strip portion 121.

[0049] The latching mounting portion 122 may be equipped with a connecting ring 123 for mounting to the ramp member 200 at the other end. The airbag cushion 100 can be connected to the ramp member 200 via the connecting ring 123.

[0050] The connecting ring 123 can form a closed loop with a generally slit-like structure. The connecting ring 123 can extend in a direction perpendicular to the extension direction of the latch mounting portion 122. For example, the latch mounting portion 122 can extend in a vertical direction, while the connecting ring 123 can extend in a left-right direction at the end portion of the latch mounting portion 122.

[0051] In this embodiment, the strip portion 121 and the snap-on mounting portion 122 can be integrally connected to the pad body 110 by sewing. However, the method of connecting the strip portion 121 and the snap-on mounting portion 122 is not limited to this.

[0052] With the pad body 110 folded into a roll, the strip portion 121 can wrap around the circumference of the rolled-up pad body 110, and the fastener mounting portion 122 can be inserted into the opening 121a of the strip portion 121, allowing it to extend or pass through the opening 121a and be tightened, thereby enabling the fastener strap 120 to securely bind the pad body 110. Therefore, the pad body 110 can remain in a rolled-up state.

[0053] The ramp component 200 can be mounted and secured to the vehicle's roof longitudinal beam using fastener B. In this embodiment, fastener B may include screws or bolts.

[0054] The airbag cushion 100 can be placed, supported, and secured on the ramp member 200, and installed on the vehicle body via the ramp member 200. In this case, the fastener B engages or connects with the connecting hole 221 formed in the ramp member 200, but does not connect with the airbag cushion 100, thereby securing the ramp member 200 to the roof longitudinal beam. That is, the fastener B can be physically connected only to the ramp member 200 without physically connecting to the airbag cushion 100, thus allowing the ramp member 200 to be directly secured to the vehicle body.

[0055] Referring to Figures 5 and 6 and Figure 2, the ramp member 200 may include a support portion 210 for placing the airbag cushion 100 and a fixing portion 220 extending upward from the upper end of the support portion 210. Additionally, the ramp member 200 may also include a cover portion 230.

[0056] The ramp member 200 may have a structure in which the support portion 210, the fixing portion 220, and the cover portion 230 are integrally formed. In this embodiment, the ramp member 200 may be made of rigid plastic, but the material of the ramp member 200 is not limited to this.

[0057] The support portion 210 may include a first portion 211 that is continuously connected to and extends vertically from the fixed portion 220, and a second portion 212 that extends forward from the lower end of the first portion 211. The support portion 210 may have an integral "L" shaped cross-sectional structure.

[0058] The fixing portion 220 can be configured as at least one pair of fixing portions. The fixing portion 220 can have an overall flat rectangular plate structure, can be disposed on each of the two opposite edges of the first portion 211 in the longitudinal direction, and can extend upward. The connecting hole 221 can be designed to extend through or pass through the fixing portion 220.

[0059] The fixing part 220 is inserted to extend or pass through the connecting ring 123 and connects to the buckle mounting part 122. Therefore, the airbag cushion 100 can be fixed to the ramp member 200 by fitting the strip member 120 into the fixing part 220 through the connecting ring 123 and with the rolled-up cushion body 110 placed and supported on the support part 210.

[0060] The connecting hole 221 can be located above the connecting ring 123, maintaining a certain distance from the connecting ring 123, at which point the fixing part 220 is inserted into the connecting ring 123. Therefore, the fastener B can be fixed only to the fixing part 220 above the connecting ring 123. In addition, the fastener B can also restrict the buckle strap 120 mounted on the fixing part 220, so that the buckle strap 120 will not slip out from the upper part of the fixing part 220.

[0061] The cover portion 230 can be configured to cover the upper part of the airbag cushion 100 when the airbag cushion 100 is placed on the support portion 210. The cover portion 230 extends forward from the upper end of the support portion 210 and accommodates the airbag cushion 100 between the cover portion 230 and the support portion 210. Specifically, the cover portion 230 can extend forward between a pair of fixing portions 220 and together with the first portion 211 and the second portion 212 of the support portion 210, form a generally "U"-shaped internal space S. The cushion body 110, folded into a roll, can be accommodated in the internal space S.

[0062] Additionally, it may further include a fixing strap 300, which completely wraps around the ramp member 200 and the airbag 100 when the airbag cushion 100 is placed inside the ramp member 200.

[0063] The securing strap 300 can prevent the airbag cushion 100 placed on the ramp component 200 from moving or separating from the ramp component 200 during the process of securing the ramp component 200 to the vehicle body.

[0064] In this embodiment, the fixing strap 300 may include adhesive tape that allows the airbag cushion 100 and the ramp member 200 to be bonded together simultaneously by adhesiveness.

[0065] The securing strap 300 can be configured to break when the airbag cushion 100 deploys. For this purpose, the securing strap 300 can be made of a material that is easy to break, or it can be equipped with tear lines 310 to achieve breakage.

[0066] In this embodiment, the fixing strap 300 can be configured as multiple fixing straps, i.e., at least two fixing straps. However, the number of fixing straps 300 is not limited and can be two or more.

[0067] Meanwhile, as attached Figure 7 and attached Figure 8 As shown, it may further include a retaining pin 400 for securing the airbag 100 to the cover portion 230 of the ramp member 200 when the airbag 100 is located within the ramp member 200.

[0068] The structure of the fixing pin 400 can be designed according to the pad body 110 and may include a push pin.

[0069] The retaining pin 400 can be connected to a non-inflatable area of ​​the pad body 110, which is not inflated by gas, and is inserted into the cover portion 230 when the airbag pad 100 is placed on the support portion 210 to prevent the airbag pad 100 from moving. In addition, the retaining pin 400 can also fix the position of the airbag pad 100.

[0070] In this embodiment, the fixing pin 400 may coexist with the fixing belt 300, or the fixing pin 400 may be provided alone without the fixing belt 300.

[0071] In this manner, the curtain airbag device 1 according to an embodiment of the present invention is configured such that the ramp member 200 is fixed to the vehicle body by fastener B, and the airbag cushion 100 is connected to the ramp member 200 in a free state. In the free state, the connecting ring 123 is engaged with the fixing portion 220 of the ramp member 200.

[0072] Therefore, even if the ramp component 200 is connected to the vehicle body by fastener B, the buckle strap 120 will not sag due to the load of the airbag cushion 100, and it will not deform or tear even if an external force is applied.

[0073] Furthermore, when the airbag cushion 100 deploys, the buckle strap 120, which is freely connected to the fixing part 220, will not tear or break. Also, thanks to the fastener B, the connecting ring 123 will not detach from the upper part of the fixing part 220, and the downward fall of the connecting ring from the fixing part 220 is prevented by the support part 210. Therefore, when the airbag cushion 100 deploys, the buckle strap 120 remains connected to the fixing part 220.

[0074] In particular, since fastener B and buckle strap 120 are constructed as a non-physical connection, the powerful force generated when the airbag cushion 100 deploys (i.e., the deployment force) is not transmitted to fastener B. Therefore, the problems that occur in structures that transmit the deployment force to fastener B in related technologies (i.e., damage to the fixing portion 220 of the ramp member 200 when fastener B separates and the scattering of fragments due to damage to the fixing portion 220) can be avoided.

[0075] According to an embodiment of the present invention, a curtain-type airbag can be provided, which can prevent deformation and improve assembly efficiency by improving the installation structure of the curtain-type airbag.

[0076] Several embodiments have been described above. However, it should be noted that the structures mentioned above can be modified in various ways. For example, suitable results can also be obtained by performing the described techniques in a different order and / or by combining, replacing, or supplementing other components or their equivalents in different ways with the components in the described system, architecture, device, or circuit. Therefore, other embodiments are also within the scope of the claims of this application.

[0077] Although specific examples are included in this specification, it should be understood upon a full understanding of the disclosure of this application that various variations in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are for illustrative purposes only and are not intended to be limiting. Features or aspects described in each example should be considered applicable to similar features or aspects in other examples. Desired results may also be obtained by performing the described techniques in a different order, or by combining components in the described system, architecture, device, or circuit in different ways, and / or by replacing or supplementing them with other components or their equivalents. Therefore, the scope of this disclosure is not defined by specific embodiments but by the claims and their equivalents, and all interpretations of variations within the scope of the claims and their equivalents should be considered to be included in this disclosure.

Claims

1. A curtain-type airbag device, characterized in that, include: An airbag cushion includes a cushion body and a fastening strap, the fastening strap wrapping around the cushion body and securing the cushion body to maintain a folded shape; as well as A ramp component, the ramp component being mounted on the roof longitudinal beam of a vehicle and secured to the roof longitudinal beam of the vehicle with fasteners; wherein the airbag cushion is placed and supported on the ramp component; The ramp component has a connecting hole, and the fastener engages with the connecting hole to secure the ramp component to the roof longitudinal beam without connecting the ramp component to the airbag cushion.

2. The curtain-type airbag device according to claim 1, characterized in that: The fastening strap includes a strip-shaped portion wrapped around the pad body folded into a roll, and a fastening mounting portion extending through the strip-shaped portion and connected to the ramp member; and The latching mounting portion is provided with a connecting ring, which is configured to be fitted onto the ramp member at the end portion of the ramp member.

3. The curtain-type airbag device according to claim 2, characterized in that: At the upper end of the pad body, the snap-on mounting portion extends toward the lower end of the pad body, and the strip-shaped portion extends in the opposite direction to the snap-on mounting portion.

4. The curtain-type airbag device according to claim 2, characterized in that: The strip-shaped portion has an opening, and The hook-and-loop fastening portion extends through the opening and is fastened so that the hook-and-loop strap binds the pad body.

5. The curtain-type airbag device according to claim 2, characterized in that: The ramp component includes a support portion for placing the airbag cushion and a fixing portion extending upward from the upper end of the support portion. The fixing portion extends through the connecting ring and connects to the buckle mounting portion.

6. The curtain-type airbag device according to claim 5, characterized in that: The connecting hole extends through the fixing portion; and With the fixing part inserted into the connecting ring, the connecting hole is positioned above the connecting ring.

7. The curtain-type airbag device according to claim 5, characterized in that: The supporting portion includes a first portion and a second portion, the first portion being connected to the fixed portion and extending vertically, and the second portion extending from the lower end of the first portion. The fixing portion is disposed on each of the opposite edges of the first portion.

8. The curtain-type airbag device according to claim 5, characterized in that, The ramp component also includes a cover portion, which is disposed on the airbag pad when the airbag pad is placed on the support portion.

9. The curtain-type airbag device according to claim 8, characterized in that: The cover portion extends from the upper end of the support portion and accommodates the airbag cushion between the cover portion and the support portion.

10. The curtain-type airbag device according to claim 1, characterized in that, The curtain-type airbag device further includes a fixing strap that wraps around the ramp member and the airbag when the airbag cushion is located within the ramp member, wherein the fixing strap is configured to break when the airbag cushion deploys.

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