Air bag device

Abstract

The present invention relates to an airbag device that improves assembly ease and assembly time by improving the assembly structure of a retainer and a filter. The present invention introduces an airbag device comprising: a retainer that supports an inflator; a filter that filters gas discharged from the inflator to prevent foreign substances generated during the gas discharge process from coming into contact with the airbag cushion; and an assembly means for assembling the filter to the retainer through a snap-fit ​​method.

Description

Technology Field

[0001] The present invention relates to an airbag device that improves assembly ease and assembly time by improving the assembly structure of a retainer and a filter. Background Technology

[0003] Airbags are installed inside the vehicle to protect passengers from the impact caused by a collision.

[0004] Under normal circumstances, the airbag cushion is stored folded within the airbag cover; however, when a collision is detected by a sensor, the inflator explodes to rapidly supply gas to the airbag cushion, thereby instantaneously deploying the cushion to protect the occupants from the impact.

[0006] Meanwhile, foreign substances (by-products and particles) generated by the inflator during the airbag cushion deployment process are filtered by a mesh-structured filter to prevent them from coming into contact with the airbag cushion.

[0007] However, conventionally, the housing is mounted separately on the retainer supporting the inflator, and the filter is welded and fixed to the housing. This results in a problem where not only is the number of parts required to fix the filter increased, but the assembly time is also heightened.

[0009] 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

[0011] (Patent Document 0001) KR 10-2011-0055217 A The problem to be solved

[0012] The present invention has been devised to solve the aforementioned problems and aims to provide an airbag device that improves assembly ease and assembly time by improving the assembly structure of the retainer and filter. means of solving the problem

[0014] The configuration of the present invention for achieving the above-mentioned purpose may be characterized by comprising: a retainer supporting an inflator; a filter that filters gas discharged from the inflator to prevent foreign substances generated during the gas discharge process from coming into contact with the airbag cushion; and an assembly means for assembling the filter to the retainer through a snap-fit ​​method.

[0015] The assembly means comprises: a cover having a gas outlet formed in the center and a catch hole formed on the edge; and a stud provided on the outer surface of a retainer corresponding to the catch hole; wherein the openings of the filter and the retainer are covered by the cover, but the filter is exposed through the gas outlet; and the catch hole is inserted into the stud so that the cover and the retainer can be assembled.

[0016] The above cover is divided into an outer cover and an inner cover that overlap each other; a filter is fixed between the outer cover and the inner cover; and the locking hole of the outer cover and the locking hole of the inner cover can be inserted into a stud.

[0017] The above filter can be sewn with the outer cover and the inner cover.

[0018] The rim of the above filter is formed in a shape that wraps around the rim of the opening of the retainer, so that it can be assembled to the opening of the retainer.

[0019] The above assembly means may have a first fastening part and a second fastening part formed to correspond to and fasten to the edge of the filter and the edge of the opening of the retainer, so that the filter and the retainer can be assembled.

[0020] The first fastening part is a hooking hole formed at the corner of the filter; and the second fastening part may be a hook formed at the corner of the opening of the retainer corresponding to the hooking hole.

[0021] The rim of the above filter is formed in a shape that wraps around the rim of the opening of the retainer, so that it can be assembled to the opening of the retainer. Effects of the invention

[0023] Through the above-described means for solving the problem, the present invention has the effect of improving the assemblability of the filter and reducing the number of assembly steps required for assembly, by assembling the filter and the retainer by a mechanical interlocking assembly method. Brief explanation of the drawing

[0025] FIG. 1 is a drawing showing the external shape of a filter coupled to a retainer according to the present invention. FIGS. 2a to 2d are drawings for explaining the structure of a first embodiment of an assembly means for assembling a retainer and a filter according to the present invention, and the assembly process thereof. FIGS. 3a to 3d are drawings for explaining the structure of a second embodiment of an assembly means for assembling a retainer and a filter according to the present invention, and the assembly process thereof. FIGS. 4a to 4c are drawings for explaining the structure of a third embodiment of an assembly means for combining a retainer and a filter according to the present invention and the assembly process thereof. Specific details for implementing the invention

[0026] Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrative for the purpose of explaining embodiments according to the present invention, and embodiments according to the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described in this specification or application.

[0027] Since embodiments according to the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0029] Terms such as "first," "second," etc., may be used to describe various components, but said components shall not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0030] 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. Conversely, 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. Other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0032] The terms used herein are merely for describing specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the described features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0033] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification.

[0035] A preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0037] FIG. 1 is a drawing showing the external shape of a filter (300) coupled to a retainer (100) according to the present invention, and FIG. 2a to 2d are drawings for explaining the structure of a first embodiment of an assembly means for coupling a retainer (100) and a filter (300) according to the present invention and the assembly process thereof.

[0039] Referring to the drawings, the airbag device according to the present invention comprises: a retainer (100) that supports an inflator (400); a filter (300) that filters gas discharged from the inflator (400) to prevent foreign substances generated during the gas discharge process from coming into contact with the airbag cushion; and an assembly means for assembling the filter (300) to the retainer (100) through a snap-fit ​​method.

[0041] Specifically, the retainer (100) is formed in the shape of a square housing so that an opening (110) is formed on the upper surface, and a circular hole is formed in the center of the bottom surface of the retainer (100) so that an inflator (400) is inserted and supported.

[0042] And, as the inflator (400) explodes, gas supplied from the inflator (400) flows in and the airbag cushion expands and unfolds.

[0043] In addition, the filter (300) is formed with a mesh structure and assembled onto the opening (110) of the retainer (100) by means of an assembly means.

[0044] In particular, by applying a mechanical fitting assembly method rather than a conventional welding fixing method to combine the filter (300) and the retainer (100), the assemblability of the filter (300) is improved, and the assembly time is reduced.

[0046] Meanwhile, in the first and second embodiments of the assembly means according to the present invention, the filter (300) and the retainer (100) can be assembled using the covers (200, 200a, 200b).

[0048] Referring to FIGS. 2a to 3d, the assembly means comprises: a cover (200, 200a, 200b) having a gas outlet (210) formed in the center and a catch hole (220) formed on the edge; and a stud (120) provided on the outer surface of a retainer (100) corresponding to the catch hole (220).

[0049] And, the opening (110) of the filter (300) and the retainer (100) is covered by the above covers (200, 200a, 200b), while the filter (300) is exposed through the gas outlet (210); and the above catch hole (220) is inserted into the stud (120) to form a structure in which the covers (200, 200a, 200b) and the retainer (100) are combined.

[0051] Specifically, the cover (200, 200a, 200b) is formed of a fabric material, and a circular gas outlet (210) is formed in the center of the cover (200, 200a, 200b), and a part of the rim is extended outwardly at a 90° interval from the gas outlet (210), and a circular catch hole (220) is formed in the extended rim part.

[0052] And, as the central portion of the cover (200, 200a, 200b) and the filter (300) overlap, the central portion of the filter (300) is exposed to the outside through the gas outlet (210).

[0053] In addition, a cylindrical stud (120) is formed protruding from the bottom corner portion of the retainer (100) for connection with the vehicle body.

[0054] In particular, the above-mentioned catch hole (220) is formed at a position corresponding to the stud (120), so that the catch hole (220) is inserted into the stud (120), and accordingly, the filter (300) is assembled to the retainer (100).

[0056] Referring to FIGS. 2a to 2d, the structure of the first embodiment of the assembly means is specifically examined. The cover is divided into an outer cover (200a) and an inner cover (200b) that overlap each other; a filter (300) is fixed between the outer cover (200a) and the inner cover (200b); and the structure is such that the catch hole (220) of the outer cover (200a) and the catch hole (220) of the inner cover (200b) are inserted into the stud (120).

[0057] The filter (300) can be fixed to the outer cover (200a) and inner cover (200b) by sewing.

[0058] And, since the outer cover (200a) and the inner cover (200b) are formed with the same shape, the gas outlet (210) and the catch hole (220) are also formed identically in the outer cover (200a) and the inner cover (200b).

[0060] That is, the filter (300) is placed between the outer cover (200a) and the inner cover (200b) and sewn along the edge of the filter (300) to secure the filter (300) between the outer cover (200a) and the inner cover (200b).

[0061] Accordingly, with the sewn filter (300) positioned in the opening (110) of the retainer (100), the catch hole (220) formed on the edge of the outer cover (200a) and inner cover (200b) is inserted into the stud (120) at the bottom of the retainer (100), thereby allowing the filter (300) to be assembled to the retainer (100).

[0063] Next, regarding the structure of the first embodiment of the assembly means described above, with reference to FIGS. 3a to 3d, the edge of the filter (300) is formed in a shape that surrounds the edge of the opening (110) of the retainer (100), and thus becomes a structure assembled to the opening (110) of the retainer (100).

[0064] To this end, the filter (300) is formed in the shape of a square lid with a rim protruding downward, and the lower rim of the filter (300) is formed to fit into the rim of the opening (110) of the retainer (100).

[0066] That is, the filter (300) is fitted onto the top of the retainer (100), and the cover (200) is placed over the filter (300). In this state, the catch hole (220) formed on the edge of the cover (200) is fitted into the stud (120) at the bottom of the retainer (100), thereby allowing the filter (300) to be assembled to the retainer (100).

[0068] Meanwhile, the third embodiment of the assembly means according to the present invention is configured by directly assembling the filter (300) to the retainer (100).

[0070] Referring to FIGS. 4a to 4c, the structure of the third embodiment of the assembly means is such that the assembly means has a first fastening part and a second fastening part formed to correspond to and fasten to the edge of the filter (300) and the edge of the opening (110) of the retainer (100), thereby forming a structure in which the filter (300) and the retainer (100) are combined.

[0072] Specifically, the first fastening part is a hooking hole (302) formed at the corner of the filter (300); and the second fastening part may be a hook (102) formed at the corner of the opening (110) of the retainer (100) corresponding to the hooking hole (302).

[0073] For example, a slot-shaped hooking hole (302) is formed along each corner of the filter (300) in the middle section, extending longitudinally.

[0074] And, a hook (102) is formed along each corner of the retainer (100) corresponding to the hooking hole (302), with a shape protruding upward in the middle part.

[0075] In this way, the present invention allows the filter (300) to be fitted into the retainer (100) by fitting the hook (102) into the hooking hole (302).

[0076] However, the formation positions of the hook (102) and the hooking hole (302) may be swapped and assembled, and such an assembly configuration is also included within the scope of the present invention.

[0078] In addition, in the case of the structure of the third embodiment above, the edge of the filter (300) is formed in a shape that surrounds the edge of the opening (110) of the retainer (100), so that it is assembled to the opening (110) of the retainer (100).

[0079] To this end, the filter (300) is formed in the shape of a square lid with a rim protruding downward, and the lower rim of the filter (300) is formed to fit into the rim of the opening (110) of the retainer (100).

[0080] According to this configuration, during the process of the filter (300) being fitted onto the top of the retainer (100), the hook (102) formed in the retainer (100) is fitted into the hooking hole (302) formed in the filter (300), thereby enabling the filter (300) to be assembled to the retainer (100).

[0082] Below, we will examine the assembly process of the filter (300) and the retainer (100) according to the present invention for each embodiment.

[0084] <First Example>

[0085] As shown in Fig. 2a, a plate-shaped filter (300) is inserted between the outer cover (200a) and the inner cover (200b).

[0086] Next, as shown in FIG. 2b, the filter (300) is secured between the outer cover (200a) and the inner cover (200b) by sewing along the edge of the filter (300).

[0087] And, as shown in FIG. 2c, the inner cover (200b) is positioned in a shape that covers the opening (110) of the retainer (100) so that the filter (300) is positioned within the opening (110) of the retainer (100).

[0088] Afterwards, as shown in FIG. 2d, the catch hole (220) formed in the outer cover (200a) and inner cover (200b) is inserted into the stud (120) provided at the bottom of the retainer (100), thereby assembling the filter (300) to the retainer (100).

[0090] <Second Embodiment>

[0091] Prepare a filter (300) with a shape in which the rim protrudes downward as in Fig. 3a.

[0092] Accordingly, as shown in FIG. 3b, the filter (300) is fitted onto the top of the retainer (100) in a shape such that the edge of the filter (300) surrounds the edge of the opening (110) of the retainer (100).

[0093] Next, as shown in FIG. 3c, the cover (200) is positioned on the filter (300) in a shape that covers the filter (300).

[0094] Afterwards, as shown in Fig. 3d, the filter (300) is assembled to the retainer (100) by inserting the catch hole (220) formed in the cover (200) into the stud (120) provided at the bottom of the retainer (100).

[0096] <Third Embodiment>

[0097] Prepare a filter (300) with a shape in which the rim protrudes downward as shown in Fig. 4a.

[0098] Accordingly, as shown in FIG. 4b, the hooking hole (302) formed at the corner of the filter (300) is fitted into the hook (102) formed at the corner of the opening (110) of the retainer (100), thereby directly assembling the filter (300) to the retainer (100) as shown in FIG. 4c.

[0100] As described above, the present invention improves the assemblability of the filter (300) and reduces the number of assembly steps required for assembly by assembling the filter (300) and the retainer (100) using a mechanical fitting assembly method.

[0102] 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. Explanation of the symbols

[0104] 100 : Retainer 102 : Hook 110 : Opening 120 : studs 200 : Cover 200a : Outer cover 200b : Inner cover 210 : Gas exhaust port 220 : Locking hole 300 : Filter 302 : Hooking hole 400 : Inflator

Claims

Claim 1 An airbag device comprising: a retainer supporting an inflator; a filter that filters gas discharged from the inflator to prevent foreign substances generated during the gas discharge process from coming into contact with the airbag cushion; and an assembly means for assembling the filter to the retainer through a snap-fit ​​method; wherein the assembly means comprises: a cover having a gas discharge port formed in the center and a catch hole formed on the edge; and a stud provided on the outer surface of the retainer corresponding to the catch hole; wherein the opening of the filter and the retainer is covered by the cover, but the filter is exposed through the gas discharge port; wherein the catch hole is inserted into the stud so that the cover is assembled to the retainer, and the cover is divided into an outer cover and an inner cover that overlap each other; wherein the filter is fixed between the outer cover and the inner cover; and wherein the catch hole of the outer cover and the catch hole of the inner cover are inserted into the stud. Claim 2 delete Claim 3 delete Claim 4 An airbag device according to claim 1, characterized in that the filter is sewn to an outer cover and an inner cover. Claim 5 An airbag device according to claim 1, characterized in that the rim of the filter is formed in a shape that surrounds the rim of the opening of the retainer and is assembled to the opening of the retainer. Claim 6 An airbag device according to claim 1, wherein the assembly means is characterized by having a first fastening part and a second fastening part formed to correspond to and fasten to the edge of the filter and the edge of the opening of the retainer, so that the filter and the retainer are assembled. Claim 7 An airbag device comprising: a retainer supporting an inflator; a filter that filters gas discharged from the inflator to prevent foreign substances generated during the gas discharge process from coming into contact with the airbag cushion; and an assembly means for assembling the filter to the retainer through a snap-fit ​​method, wherein the assembly means comprises a first fastening part and a second fastening part formed to correspond to and fasten to the edge of the filter and the edge of the opening of the retainer, so as to assemble the filter and the retainer, wherein the first fastening part is a hooking hole formed at the edge of the filter; and the second fastening part is a hook formed at the edge of the opening of the retainer corresponding to the hooking hole. Claim 8 An airbag device according to claim 7, characterized in that the rim of the filter is formed in a shape that surrounds the rim of the opening of the retainer and is assembled to the opening of the retainer.

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