Airbag housing

Abstract

The present disclosure relates to an airbag housing. The airbag case includes a first cover that accommodates an airbag cushion therein, the first cover including a first fastening portion formed along a periphery of the first cover, and a second cover that covers the airbag cushion and includes: a second fastening portion formed along a periphery of the first cover; a second fastening portion formed along a periphery of the second cover to engage with the first fastening portion and to be fastened to the first cover; a breaking portion formed in a portion of the second cover to reduce rigidity; and a fracture dispersing portion formed at an end portion of the fracture portion, the fracture dispersing portion dispersing a fracture force to prevent a portion of the second cover other than the fracture portion from being cut.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an airbag housing that improves the assemblability of an airbag housing product while reducing manufacturing costs. BACKGROUND

[0002] In the airbag housing, one side edge of an upper cover and one side edge of a lower cover are connected by a hinge structure, and the other side edge of the upper cover and the other side edge of the lower cover are fastened by a hook structure.

[0003] That is, when an airbag cushion is accommodated in the lower cover while the upper cover is open, and then the upper cover is closed, the upper cover rotates around the hinge, and the hook formed on the upper cover passes through the hook hole formed in the lower cover, so that the upper cover and the lower cover are engaged, thereby closing the airbag housing.

[0004] However, in this closed structure of the airbag housing, if the thickness of the hinge area becomes too large due to a difference between the 3D design shape of the hinge area and the actual product shape, the upper cover and the lower cover can not properly engage with each other and can be spread apart.

[0005] The content described in this BACKGROUND section is only for enhancement of understanding of the background of the present disclosure, and should not be taken as an acknowledgement that it corresponds to prior art known to those skilled in the art. SUMMARY

[0006] Therefore, the present disclosure has been made in view of the above problems, and it is an object of the present disclosure to provide an airbag housing that is assembled by coupling two independently separated covers to improve the assemblability of an airbag housing product and reduce manufacturing costs.

[0007] The technical problems to be achieved in the present disclosure are not limited to the above-mentioned technical problems, and other technical problems not mentioned can be clearly understood by those skilled in the art to which the present disclosure belongs from the following description.

[0008] In the overall aspect of the present disclosure, the airbag housing includes a first cover configured to accommodate an airbag cushion therein, the first cover including a first fastening portion formed along a periphery of the first cover, and a second cover configured to cover the airbag cushion and including a second fastening portion formed along a periphery of the second cover and configured to be engaged with and fastened to the first fastening portion, a fracture portion formed in a portion of the second cover to reduce rigidity, and a fracture dispersion portion formed at an end of the fracture portion, the fracture dispersion portion being configured to disperse a fracture force to prevent cutting of other portions of the second cover other than the fracture portion.

[0009] Each of the fracture dispersion portions can be formed in a shape configured to penetrate a hole of the second cover.

[0010] Each of the fracture dispersion portions can be formed in a circular hole shape.

[0011] A thickness of a portion of the second cover in which the fracture dispersion portion is formed can be greater than a thickness of a remaining portion of the second cover.

[0012] The first cover can further include an outer wall formed around a periphery of the first cover and a periphery of the second cover, wherein the first fastening portion and the second fastening portion can be formed on the outer wall of the first cover and the outer wall of the second cover, respectively, and wherein the first cover can further include an inner wall disposed within the outer wall such that the airbag cushion is accommodated in a space formed by the inner wall.

[0013] The inner wall can be disposed within a fastening region between the first fastening portion and the second fastening portion.

[0014] The inner wall can be disposed adjacent to the first fastening portion and the second fastening portion.

[0015] The inner wall can be formed to have a height greater than a height of the outer wall of the first cover and the outer wall of the second cover.

[0016] The inner wall can be formed in a shape of a plate such that one end of each of the inner walls is fixed to an inner surface of one of the first cover and the second cover, and a remaining end of each of the inner walls protrudes toward a remaining one of the first cover and the second cover, wherein the second cover can be configured to face the inner wall.

[0017] The inner wall can be vertically supported on the inner surface of the first cover and the inner surface of the second cover.

[0018] The second fastening portion of the second cover can be engaged with the first fastening portion of the first cover as a hook fastening structure.

[0019] One of the first fastening portion and the second fastening portion can include a hook, and the other of the first fastening portion and the second fastening portion can include a hook groove, wherein the first fastening portion can be fastened to the second fastening portion to form the hook fastening structure.

[0020] The fracture portion can be configured as a dotted line tear line to reduce rigidity of the fracture portion.

[0021] The fracture portion can have a U shape. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a view showing an assembled state of an airbag housing according to one embodiment of the present disclosure;

[0024] Figure 2 is a view showing a state in which the first cover and the second cover are separated from each other according to the present disclosure;

[0025] Figure 3 is a sectional view taken along line A-A of Figure 2 ; and

[0026] Figure 4 is a view for explaining an inner wall according to the present disclosure. DETAILED DESCRIPTION

[0027] In the following description of embodiments disclosed in the present disclosure, detailed descriptions of known functions and configurations incorporated herein can be omitted when it can make the subject matter of the present disclosure rather unclear. In addition, the drawings are merely for the convenience of understanding the embodiments disclosed in the present disclosure, and the technical idea disclosed in the present disclosure is not limited by the drawings, and it should be understood to include all changes, equivalents or alternatives included in the spirit and technical scope of the present disclosure.

[0028] In the following description of embodiments, terms such as "first" and "second" can be used to describe various elements, but do not limit the elements. These terms are only used to distinguish one element from other elements.

[0029] The singular expression can include the plural expression, unless they have obviously different contextual meanings.

[0030] In the following description of embodiments, terms such as "include", "comprise" and "have" should be interpreted as indicating the presence of the features, numbers, steps, operations, elements or components stated in the specification, and do not exclude the presence or possibility of one or more other features, numbers, steps, operations, elements, components or combinations thereof.

[0031] The suffixes "module" and "part" of the components used in the following description are given or used interchangeably only for the convenience of preparing the description of the present disclosure, and they do not have different meanings or effects by themselves.

[0032] When one element or layer is referred to as "connected to" or "coupled to" another element or layer, it can be directly connected to or coupled to the other element or layer, or there can be an intermediate element or layer. In contrast, when one element is referred to as "directly connected to" or "directly coupled to" another element or layer, there can be no intermediate element or layer.

[0033] Hereinafter, the embodiments disclosed in the present disclosure will be described in detail, and the same or similar components in different drawings will be denoted by the same reference numerals, and redundant descriptions thereof will be omitted.

[0034] The airbag housing according to the present disclosure includes a first cover 100 configured to accommodate an airbag cushion therein and including a first fastening portion 120 formed along a periphery of the first cover 100, and a second cover 200 disposed to cover a shape of the airbag cushion and including a second fastening portion 220 formed along a periphery of the second cover 200 to be engaged with the first fastening portion 120 and fastened to the first fastening portion 120 in a hook fastening structure, a fracture portion 230 formed in a portion of the second cover 200 to be cut due to relatively low rigidity, and a fracture dispersion portion 240 formed at an end of the fracture portion 230 and configured to disperse a fracture force to prevent cutting of other portions of the second cover 200 except for the fracture portion 230.

[0035] Referring to Figure 1 and Figure 2 A portion of the first cover 100 formed in a rectangular plate shape becomes an upper surface of the airbag housing, and a first outer wall 110 is formed by folding along front, rear, left, and right circumferential surfaces of the plate so that the first cover 100 is formed in a rectangular housing shape.

[0036] In addition, the first fastening portion 120 is formed along the first outer wall 110, and in this case, a plurality of first fastening portions 120 can be formed at regular intervals on the relatively long first outer wall 110 in the first outer wall 110.

[0037] Here, the first fastening portion 120 can be one of a hook and a hook groove forming a hook fastening structure.

[0038] Further, a portion of the second cover 200 formed in a rectangular plate shape becomes a lower surface of the airbag housing, and a second outer wall 210 is formed by folding along front, rear, left, and right circumferential surfaces of the plate so that the second cover 200 is formed in a rectangular housing shape.

[0039] The second cover 200 is formed in a housing shape corresponding to the first cover 100, and the second fastening portion 220 is formed along the second outer wall 210 at a position corresponding to the first fastening portion 120.

[0040] If the first fastening portion 120 is a hook, the second fastening portion 220 can be formed as a hook groove so that the first fastening portion 120 and the second fastening portion 220 are fastened by a hook fastening structure.

[0041] The fracture portion 230 is formed as a dotted line tear line so that the rigidity of the fracture portion 230 is low.

[0042] The fracture portion 230 is formed in a "U" shape along three of the four edges of the periphery of the plate that forms an abutment with the first outer wall 110 of the first cover 100, except for at least one edge.

[0043] Accordingly, when the airbag cushion accommodated in the airbag housing is deployed, the fracture portion 230 is cut by the deployment pressure of the airbag cushion, and the upper surface of the airbag housing rotates about the side where the fracture portion 230 is not formed to open, so that the airbag cushion can be inflated and deployed through the opened portion.

[0044] In particular, a fracture dispersion portion 240 having a shape that disperses a fracture force is formed at both ends of the fracture portion 230.

[0045] Accordingly, the fracture force from the fracture portion 230 is dispersed in the fracture dispersion portion 240, thereby preventing the remaining portion of the second cover 200 that comes into contact with the fracture dispersion portion 240 from being cut.

[0046] As such, the present disclosure allows the upper surface of the airbag housing to stably open by rotating in the hinge structure through the fracture portion 230, thereby improving the deployment performance of the airbag cushion folded in the airbag housing.

[0047] In particular, the first cover 100 and the second cover 200 are respectively independently formed, the airbag housing is assembled through the fastening structure of the first cover 100 and the second cover 200, thereby enabling the assemblability of the airbag housing product to be improved and the manufacturing cost to be reduced.

[0048] In addition, the fracture dispersion portion 240 can be formed in the shape of a hole that penetrates the second cover 200.

[0049] The fracture dispersion portion 240 can be formed in the shape of a circular hole.

[0050] In particular, the fracture dispersion portion 240 can be formed in the shape of a hole that vertically penetrates the plate portion of the second cover 200 serving as the upper surface of the airbag housing.

[0051] Further, the fracture dispersion portion 240 can be formed at the end portion of the fracture portion 230 to have a diameter greater than the width of the fracture portion 230, i.e., greater than the size in the width direction of the fracture portion 230.

[0052] Accordingly, the fracture force transmitted from the fracture portion 230 to the fracture dispersion portion 240 is distributed along the inner surface of the hole forming the fracture dispersion portion 240, thereby preventing the portion of the second cover 200 that comes into contact with the inner surface of the hole from being cut.

[0053] Further, the thickness t1 of the portion of the second cover 200 where the fracture dispersion portion 240 is formed can be greater than the thickness t2 of the remaining portion of the second cover 200.

[0054] REFERENCE Figure 2 AND Figure 3In the plate portion of the second cover 200 serving as the upper surface of the airbag housing, the thickness t1 of some regions of the plate portion including the fracture dispersion portion 240 is greater than the thickness t2 of the remaining regions of the plate portion.

[0055] Accordingly, the thickness of the inner surface of the hole forming the fracture dispersion portion 240 is relatively increased, the rigidity of the inner surface of the hole is strengthened, and the portion of the second cover 200 contacting the inner surface of the hole is more reliably prevented from being cut.

[0056] Further, in the present disclosure, first and second outer walls 110 and 210 are formed around the periphery of the first cover 100 and the periphery of the second cover 200, first and second fastening portions 120 and 220 are formed on the first and second outer walls 110 and 210 of the first and second covers 100 and 200, respectively, and an inner wall 130 is disposed inside the first and second outer walls 110 and 210 such that the airbag cushion is accommodated in a space formed by the inner wall 130.

[0057] Referring to Figure 2 and Figure 4 , the inner wall 130 is disposed in a region facing the first and second outer walls in a space formed between the first and second covers 100 and 200.

[0058] The inner wall 130 can be disposed on the front, rear, left, and right sides of the space inside the airbag housing to define predetermined storage spaces, and the folded airbag cushion can be accommodated in the storage spaces.

[0059] Accordingly, the inner wall 130 can prevent the airbag cushion from being separated to the outside of the airbag housing not only in the folded state of the airbag cushion but also during deployment of the airbag cushion, and can also guide the path of deployment of the airbag cushion to improve deployment of the airbag cushion.

[0060] In addition, the inner wall 130 can be disposed in a fastening region between the first and second fastening portions 120 and 220.

[0061] Further, the inner wall 130 can be disposed adjacent to the first and second fastening portions 120 and 220.

[0062] For example, the first and second fastening portions 120 and 220 can be formed on the left and right outer walls 110 and 210 of the first and second covers 100 and 200, respectively, and the first and second fastening portions 120 and 220 can also be formed on the front and rear outer walls 110 and 210 of the first and second covers 100 and 200, respectively.

[0063] Accordingly, the inner wall 130 is disposed in an inner region adjacent to the left and right outer walls 110 and 210, and the inner wall 130 is also disposed in an inner region adjacent to the front and rear outer walls 110 and 210.

[0064] Therefore, when the airbag cushion is deployed, the deployment force of the airbag cushion is first transmitted to the inner wall 130, whereby the load transmitted to the fastening region between the first fastening portion 120 and the second fastening portion 220 is greatly reduced, the fastening force between the first fastening portion 120 and the second fastening portion 220 is maintained, and the fastening rigidity between the first cover 100 and the second cover 200 is ensured.

[0065] Further, the inner wall 130 can be formed to have a height greater than the height of the first outer wall 110 of the first cover 100 and the second outer wall 210 of the second cover 200.

[0066] That is, the first outer wall 110 and the second outer wall 210 contact each other to form the height of the space formed in the airbag housing.

[0067] Therefore, if the height of the inner wall 130 is less than the height of the first outer wall 110 or the second outer wall 210, the airbag cushion can be inflated toward the outer walls 110 and 210 beyond the inner wall 130.

[0068] Therefore, by forming the inner wall 130 to have a height greater than the height of the first outer wall 110 and the second outer wall 210, the inner wall 130 can stably function as a guide for the airbag cushion while preventing the airbag cushion from being inflated toward the outer walls 110 and 210.

[0069] Further, the inner wall 130 can be formed in the shape of a plate such that one end of each inner wall 130 is fixed to the inner surface of the first cover 100 or the inner surface of the second cover 200, and the other end of each inner wall 130 protrudes toward the second cover 200 or the first cover 100.

[0070] For example, as shown in FIGS. 1 and 2, one end of the inner wall 130 can be a fixed end fixed to the bottom surface of the second cover 200, and the other end of the inner wall 130 can be a free end protruding toward the first cover 100. Figure 2 and Figure 4 As shown in FIGS. 3 and 4, one end of the inner wall 130 can be a fixed end fixed to the top surface of the first cover 100, and the other end of the inner wall 130 can be a free end protruding toward the second cover 200.

[0071] Further, the inner wall 130 can be vertically supported on the inner surface of the first cover 100 and the inner surface of the second cover 200.

[0072] That is, one end of the inner wall 130 can be vertically fixed to the bottom surface of the first cover 100, and the other end of the inner wall 130 can protrude toward the second cover 200 and be vertically supported on the top surface of the second cover 200.

[0073] Therefore, the inner wall 130 functions as a rib to reinforce the rigidity of the airbag housing, thereby increasing the support rigidity of the airbag housing.

[0074] As described above, in the present disclosure, the airbag case is assembled through a hook fastening structure between the independently separated first cover 100 and the second cover 200, thereby improving the assembly performance of the airbag case and reducing the manufacturing cost.

[0075] Further, the upper surface of the airbag case is rotated in a hinge structure to open through the fracture portion 230 and the fracture dispersion portion 240, thereby improving the deployment performance of the airbag cushion.

[0076] As is apparent from the above description, according to the present disclosure, the airbag case is assembled through a hook fastening structure between the independently provided first cover and the second cover, thereby enabling the assembly performance of the airbag case product to be improved and the manufacturing cost to be reduced.

[0077] Further, the upper surface of the airbag case is rotated in a hinge structure to open through the fracture portion and the fracture dispersion portion, thereby improving the deployment performance of the airbag cushion.

[0078] Effects obtained by the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the above description.

[0079] Although the present disclosure has been explained with respect to specific embodiments, it should be understood that various modifications and changes to the present disclosure will become apparent to those skilled in the art without departing from the technical spirit of the present disclosure.

[0080] Cross Reference to Related Applications

[0081] This application claims priority to Korean Patent Application No. 10-2024-0079551, filed on June 19, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference for all purposes.

Claims

1. An airbag housing, characterized by The airbag housing includes: a first cover configured to accommodate an airbag cushion therein, the first cover including a first fastening portion formed along a periphery of the first cover; and a second cover configured to cover the airbag cushion and including: a second fastening portion formed along a periphery of the second cover and configured to be engaged with and fastened to the first fastening portion; a fracture portion formed in a portion of the second cover and configured to reduce rigidity; and a fracture dispersion portion formed at an end of the fracture portion, the fracture dispersion portion configured to disperse a fracture force to prevent cutting of other portions of the second cover other than the fracture portion.

2. The airbag housing according to claim 1, characterized in that Each of the fracture dispersion portions is formed in a shape of a hole configured to penetrate the second cover.

3. The airbag housing according to claim 1, characterized in that Each of the fracture dispersion portions is formed in a circular hole shape.

4. The airbag housing according to claim 1, characterized in that A thickness of the portion of the second cover in which the fracture dispersion portion is formed is greater than a thickness of a remaining portion of the second cover. 5.The airbag housing of claim 1, wherein: the first cover further includes an outer wall formed around a periphery of the first cover and a periphery of the second cover, wherein the first fastening portion and the second fastening portion are formed on the outer wall of the first cover and the outer wall of the second cover, respectively, and wherein the first cover further includes an inner wall disposed within the outer wall such that the airbag cushion is accommodated in a space formed by the inner wall.

6. The airbag housing according to claim 5, characterized in that The inner wall is disposed within a fastening region between the first fastening portion and the second fastening portion.

7. The airbag housing according to claim 5, characterized in that The inner wall is disposed adjacent to the first fastening portion and the second fastening portion.

8. The airbag housing according to claim 5, characterized in that The inner wall is formed to have a height greater than a height of the outer wall of the first cover and the outer wall of the second cover.

9. The airbag housing according to claim 5, characterized in that The inner wall is formed in a shape of a plate such that one end of each of the inner walls is fixed to an inner surface of one of the first cover and the second cover, and a remaining end of each of the inner walls protrudes toward a remaining one of the first cover and the second cover, and wherein the second cover is configured to face the inner wall.

10. The airbag housing according to claim 5, characterized in that The inner wall is vertically supported on the inner surface of the first cover and the inner surface of the second cover.

11. The airbag housing according to claim 1, characterized in that The second fastening portion of the second cover is engaged with the first fastening portion of the first cover as a hook fastening structure. 12.The airbag housing of claim 11, wherein: one of the first fastening portion and the second fastening portion includes a hook, and the other of the first fastening portion and the second fastening portion includes a hook groove, and wherein the first fastening portion is fastened to the second fastening portion to form the hook fastening structure.

13. The airbag housing according to claim 1, characterized in that The fracture portion is configured as a dotted line tear line to reduce rigidity of the fracture portion.

14. The airbag housing according to claim 13, characterized in that The fracture portion has a U shape.

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