JP5528065B2 - Curtain airbag mounting structure, bracket, tab and curtain airbag mounting method - Google Patents

Description

  The present invention relates to a curtain airbag mounting structure, a bracket, a tab, and a curtain airbag mounting method, which are inflated and deployed along a side surface in a vehicle compartment for the purpose of passenger protection at the time of a side collision or rollover (rollover) of a vehicle. It is about.

  A curtain airbag capable of protecting the head of an occupant even when the vehicle shifts from a side collision to a rollover is attached to the vehicle by the method described in Patent Document 1, for example. According to Patent Document 1, an ear part (tab) made of the same cloth as that of a curtain airbag, which is generally disposed at an upper edge of the curtain airbag, is sandwiched between a mounting bracket (bracket) and a pressing piece. The cylindrical member is inserted into these and fixed by caulking. The curtain airbag is attached to each of the plurality of tabs by attaching the bracket to each side and attaching the bracket to a side surface in the vehicle compartment.

  As another method, there is an attachment method illustrated in FIG. In FIGS. 8A and 8B, the wound curtain airbag 10 is fixed with the shape-retaining tape 14, and the bracket 16 is inserted into the tab 12 provided at the winding end of the curtain airbag 10. Next, the bracket fixing tape 18 is wound around the curtain airbag 10 and the bracket 16 to fix them. Then, the bracket 16 holding the curtain airbag 10 via the tab 12 is attached to the side surface (not shown) in the vehicle compartment with the bolt 20.

  As another attachment method, as shown in FIGS. 8C and 8D, the winding end of the curtain airbag 10 is sewn in the middle of the tab 22, and the curtain airbag 10 is attached to the tab 22 by the tab 22. Envelop. Then, the tab 22 holding the curtain airbag 10 is attached to the side surface (not shown) of the vehicle interior by the clip 24.

JP 2007-83781 A

  The curtain airbag can be mounted in the vehicle compartment by the method described above. However, the mounting method described in Patent Document 1 requires a member such as a pressing piece and a tape in addition to a mounting bracket (bracket) for mounting the curtain airbag to the side surface in the vehicle compartment. Similarly, in the mounting method illustrated in FIGS. 8A and 8B, a shape retaining tape, a bracket fixing tape, and the like are required. Therefore, in these attachment methods, there are many members in the attachment of the curtain airbag, resulting in an increase in cost.

  In the attachment method illustrated in FIGS. 8C and 8D, the members required for attachment are only tabs and clips sewn on the curtain airbag, so that the number of parts can be reduced and the cost can be reduced. Is possible. However, with this attachment method, the curtain airbag is suspended from the clip via the tab, and thus swings in the direction of the arrow shown in FIG. Therefore, sufficient stability of the curtain airbag cannot be obtained.

  In view of such a problem, the present invention can reduce the number of parts required for installation and reduce the cost and the installation process while ensuring sufficient stability of the curtain airbag installed in the vehicle interior. It is an object of the present invention to provide a curtain airbag mounting structure, a bracket, a tab, and a curtain airbag mounting method.

  In order to solve the above problems, a typical configuration of a curtain airbag mounting structure according to the present invention is a curtain airbag mounting structure for mounting a curtain airbag to a side surface in a vehicle compartment, A strip-like tab to be attached; and a flat plate-like bracket that is erected along the side surface portion and fixes the tab to the side surface portion. The bracket includes an upper protrusion portion that protrudes upward, and a lower protrusion portion that protrudes downward. The tab is provided at a predetermined interval from the mounting position of the tab on the curtain airbag, and the tab protrudes upward when the tab is guided from the vehicle interior side to the side surface side. A first slit to be hooked and provided at a predetermined interval from the first slit, and the tab is hooked to the lower protrusion when the lower part of the bracket is guided from the side surface side to the vehicle interior side. The second slit is provided at a predetermined interval from the second slit, and when the tab is wound around the curtain airbag and is guided again from the vehicle interior side to the side surface side from the vehicle interior side, the tab is hooked on the upper protrusion. And a third slit.

  According to the said structure, a curtain airbag can be hold | maintained at a bracket by winding a strip | belt-shaped tab around a curtain airbag and a bracket. And it becomes possible to attach a curtain airbag to a side part by fixing the bracket which hold | maintained the curtain airbag via the tab to the side part in a vehicle interior using fixing tools, such as a volt | bolt. Therefore, since the members required for attaching the curtain airbag are only the tab, the bracket, and the fixture, the number of parts can be reduced, and the cost and the attachment process can be reduced. Further, the tab is supported by the bracket at three points by being hooked on the upper projecting portion or the lower projecting portion of the bracket in the first slit, the second slit, and the third slit. This makes it possible to ensure sufficient stability of the curtain airbag.

  The tab is provided with a predetermined interval from the third slit, and further includes a fourth slit that is hooked to the lower protruding portion when the tab is guided again from the side surface side to the vehicle interior side under the bracket. Good.

  According to the above configuration, since the tab wound around the bracket is again hooked on the lower protruding portion, the tab, and thus the curtain airbag held by the tab can be more securely fixed to the bracket.

  Either one or both of the second slit and the third slit may have a larger vertical width than the first slit.

  With this configuration, it is possible to easily hook the second slit to the lower protrusion and the third slit to the upper protrusion.

  Said tab is good to further provide the fracture | rupture part which is provided between the 2nd slit and the 3rd slit, and breaks a tab at the time of expansion | deployment of a curtain airbag.

  By providing a rupture portion in the tab as in the above configuration, when the curtain airbag is deployed at the time of a side collision of the vehicle, the tab is easily ruptured (breaked) at the rupture portion due to the force of the curtain airbag being inflated. ). Therefore, the curtain airbag can be reliably inflated and deployed outside the tab.

  Said fracture | rupture part is good to consist of a notch provided in the tab. In this way, the rupture portion can be easily provided in the tab only by making a cut.

  Said incision is good in the shape of a broken line. According to the broken portion formed by the broken line-shaped cut, the tab is reliably broken when the curtain airbag is deployed while the curtain airbag is securely held (when not deployed).

  In order to solve the above-described problems, a representative configuration of a bracket according to the present invention is a bracket for attaching a curtain airbag to a side surface in a vehicle compartment via a strip-like tab attached to the curtain airbag. Is a flat plate-like member erected along the side surface portion, and is characterized by comprising an upper protruding portion protruding upward and a lower protruding portion protruding downward.

  The component corresponding to the technical idea in the curtain airbag mounting structure mentioned above and its description are applicable also to the said bracket.

  In order to solve the above problems, a typical structure of a tab according to the present invention is mounted on a flat bracket having an upper projecting portion projecting upward and a lower projecting portion projecting downward. A tab that is attached to a curtain airbag that is attached to a side surface, the tab being in a strip shape, provided at a predetermined interval from the attachment position to the curtain airbag, and the tab is located above the bracket from the vehicle interior side. A first slit that is hooked on the upper projecting portion when being guided to the side surface side, and a predetermined interval from the first slit are provided, and the tab is guided from the side surface side to the vehicle interior side under the bracket. A second slit that is hooked on the lower protruding portion, and a predetermined interval from the second slit, and the tab wraps around the curtain airbag over the bracket. A third slit which is hooked to the upper protrusion when they are again guided to the side surface portion side from both the room side, characterized in that it comprises a.

  The component corresponding to the technical idea in the curtain airbag attachment structure mentioned above and its description are applicable also to the said tab.

  In order to solve the above-mentioned problems, a typical configuration of a curtain airbag mounting method according to the present invention includes a tab attached to a curtain airbag, and a flat plate shape that is erected along a side surface in a vehicle compartment and fixes the tab. The curtain airbag is attached to the side portion of the vehicle interior using the bracket of the curtain, and the tab is guided from the vehicle interior side to the side portion above the bracket to the curtain airbag of the tab. The first slit provided at a predetermined interval from the mounting position is hooked on the upper projecting portion projecting upward in the bracket, and the tab is guided from the side surface portion side to the vehicle interior side below the bracket. Hook the second slit provided at a predetermined interval from the lower protruding part of the bracket that protrudes downward, and wind the tab around the curtain airbag. Turn again guided from the vehicle interior side to the side portion above the bracket, the third slit formed at predetermined intervals from the second slit, characterized in that the hooked upward projection.

  The component corresponding to the technical idea in the curtain airbag attachment structure mentioned above and its description are applicable also to the curtain airbag attachment method.

  According to the present invention, a curtain airbag mounting structure capable of reducing the number of parts required for mounting and reducing the cost and the mounting process while securing sufficient stability of the curtain airbag mounted in the vehicle compartment. It is possible to provide a bracket, a tab and a method for attaching a curtain airbag.

It is a figure which illustrates the attachment position of the curtain airbag in a vehicle interior. It is a figure which illustrates the state of the curtain airbag before being folded or wound. It is a figure which illustrates the curtain airbag attachment structure concerning this embodiment. It is a figure which illustrates a bracket. It is a figure which illustrates a tab. It is a figure explaining the procedure to hold | maintain a curtain airbag to a bracket. It is a figure which illustrates the connection location of the inflator to a curtain airbag. It is a figure which illustrates the conventional curtain airbag attachment method.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Curtain airbag installation position)
FIG. 1 is a diagram illustrating an example of the installation position of a curtain airbag in a vehicle compartment. FIG. 1A illustrates the curtain airbag when not deployed, and FIG. 1B illustrates the curtain airbag deployed. The curtain airbag 200 is attached above the side surface portion 110 of the vehicle 100, for example, on the roof side rail 112. When gas is supplied from an inflator (not shown) at the time of a side collision or rollover (rollover) of the vehicle 100, the curtain airbag 200 is placed in the side portion 110 in the vehicle 100 interior as illustrated in FIG. It expands and expands along.

(Curtain airbag)
FIG. 2 is a diagram illustrating a state of the curtain airbag 200 before being folded or wound. The curtain airbag 200 is formed into a bag shape, for example, by sewing a base fabric constituting the surface of the curtain airbag 200 on the front and back sides or by using OPW (One-Piece Woven).

  The curtain airbag 200 includes an inflating region 210 that inflates when the vehicle 100 collides or rolls over, and a non-inflating region 220 (indicated by hatching in the figure) that divides the inflating region 210 without being inflated. The expansion region 210 is mainly divided into a chamber 212, a duct 214, and a connecting portion 216. The chamber 212 expands to protect an occupant (not shown) from impact. The duct 214 is provided along the upper edge of the curtain airbag 200, and serves as a passage for gas supplied from an inflator (not shown). The connecting portion 216 connects the duct 214 and the chamber 212.

  With the above configuration, when gas is supplied from the inflator at the time of a collision or rollover of the vehicle 100, the gas enters the curtain airbag 200 from the gas inlet 202 of the curtain airbag 200 in the direction of the arrow shown in FIG. Then, the gas passes through the duct 214 or the connecting portion 216 connected to the duct 214 and reaches the chamber 212. Thereby, the chamber 212 (inflatable region 210) is inflated, and the curtain airbag 200 is inflated and deployed.

(Curtain airbag mounting structure)
3A and 3B are diagrams illustrating the curtain airbag mounting structure according to this embodiment. FIG. 3A is a partial perspective view, and FIG. 3B is a cross-sectional view of FIG. In FIG. 3, the curtain airbag 200 has illustrated the wound state. The curtain airbag mounting structure according to this embodiment includes a bracket 230, a tab 240, and a fixture 260.

  The bracket 230 is a flat plate-like member molded so as to stand along the side surface portion 110 in the vehicle 100 room. The curtain airbag 200 can be attached to the side surface portion 110 by fixing a tab 240 described later to the bracket 230.

  FIG. 4 is a diagram illustrating the bracket 230. 4A is a front view of the bracket 230, FIG. 4B is a perspective view of the bracket 230 to which a fixture is attached, and FIG. 4C is a side view of FIG. 4B. As illustrated in FIG. 4A, the bracket 230 includes an upper protrusion 230a that protrudes upward and a lower protrusion 230b that protrudes downward.

  The bracket 230 is provided with an insertion hole 230c. As illustrated in FIGS. 4B and 4C, the fixture 260 can be inserted into the insertion hole 230 c and attached to the side surface portion 110 of the vehicle 100.

  The tab 240 is a belt-like member attached to the curtain airbag 200 (see FIG. 2). FIG. 5 is a diagram illustrating the tab 240. As illustrated in FIG. 5, the tab 240 has a first slit 242, a second slit 244, and a third slit 246 below an attachment position 240 a where the tab 240 is attached to the curtain airbag 200. And a fourth slit 248 and a breakage portion 250.

  The first slit 242 is provided at a predetermined interval from the attachment position 240a to the curtain airbag 200, and the lateral width thereof is substantially equal to the lateral width of the upper protruding portion 230a. The second slit 244 is provided at a predetermined interval from the first slit 242, and the lateral width is substantially equal to the lateral width of the lower protrusion 230 b. The third slit 246 is provided at a predetermined interval from the second slit 244, and the lateral width thereof is substantially equal to the lateral width of the upper protruding portion 230a. The fourth slit 248 is provided at a predetermined interval from the third slit 246, and its lateral width is substantially equal to the lateral width of the lower protrusion 230b.

  In particular, in the present embodiment, the second slit 244 and the third slit 246 are configured to have a larger vertical width (width in the direction in which the tab 240 is wound) than the first slit 242, that is, holes. This is for the purpose of facilitating the hooking on the bracket 230.

  The breaking portion 250 is provided between the second slit 244 and the third slit 246 and breaks the tab 240 when the curtain airbag 200 is deployed. As a result, when the curtain airbag 200 is deployed at the time of a side collision of the vehicle 100 or the like, the tab 240 is easily ruptured (broken) at the rupture portion 250 due to the force that the curtain airbag 200 tends to expand. Therefore, the curtain airbag 200 can be reliably inflated and deployed outside the tab 240.

  In the present embodiment, the breaking portion 250 is formed by a notch provided in the tab 240. In this way, the break portion 250 can be easily provided in the tab 240 only by making a cut. Moreover, in this embodiment, this notch is a broken line shape. As a result, the tab 240 is reliably broken when the curtain airbag 200 is deployed (when not deployed), and is reliably broken when the curtain airbag 200 is deployed.

  In addition, although the broken part 250 illustrated in FIG. 5 is provided with two lines of broken line-like cuts, the present invention is not limited to this. The number of cuts can be appropriately changed according to the weight of the curtain airbag 200 or the like.

  The fixing tool 260 is inserted into the insertion hole 230 c and attaches (fixes) the curtain airbag 200 to the side surface portion 110 via the bracket 230 and the tab 240. In this embodiment, the fixture 260 is a bolt. However, the present invention is not limited to this example, and the fixing tool 260 may be anything as long as it can fix the bracket 230 to the side surface portion 110.

(Curtain airbag installation method)
A method for attaching the curtain airbag 200 to the side surface portion 110 of the vehicle 100 will be described. When attaching the curtain airbag 200 to the side surface portion 110, first, the curtain airbag 200 is held by the bracket 230 via the tab 240.

  FIG. 6 is a diagram illustrating a procedure for holding the curtain airbag 200 to the bracket 230. In order to facilitate understanding, in FIG. 6, the tab 240 is indicated by a thick solid line, and the first slit 242, the second slit 244, the third slit 246 before being hooked on the upper protrusion 230a and the lower protrusion 230b, The fourth slit 248 and the fractured portion 250 are shown with the solid line cut away. In FIG. 6, the left side of the bracket 230 is the indoor side and the right side is the side surface side.

  First, as illustrated in FIG. 6A, the tab 240 is guided from the indoor side to the side surface above the bracket 230. And the 1st slit 242 of the tab 240 is hooked on the upper protrusion part 230a. As a result, the state illustrated in FIG. Then, the tab 240 is guided from the side surface to the indoor side below the bracket, and the second slit 244 is hooked on the lower protrusion 230b. As a result, the state illustrated in FIG.

  Next, the tab 240 is wound around the curtain airbag 200 and guided again from the indoor side to the side surface above the bracket 230, and the third slit 246 is hooked on the upper protruding portion 230a. As a result, the state illustrated in FIG. Since the second slit 244 and the third slit 246 have a larger vertical width than the first slit 242 as described above, the second slit 244 and the third slit 246 can be easily hooked on the lower protrusion 230b and the upper protrusion 230a, respectively.

  As described above, the tab 240 is supported by the bracket 230 at the three points of the first slit 242, the second slit 244, and the third slit 246. Thereby, the curtain airbag 200 can be stably fixed to the bracket 230 without swinging.

  Then, from the state illustrated in FIG. 6D, the tab 240 is guided again from the side surface to the indoor side below the bracket 230, and the fourth slit 248 is hooked on the lower protrusion 230 b. Thereby, the state illustrated in FIG. 6E is obtained, and the number of points where the tab 240 is supported by the bracket 230 is further increased (supported at four points). Therefore, the tab 240 and thus the curtain airbag 200 held by the tab 240 can be more securely fixed to the bracket 230.

  The first slit 242 and the fourth slit 248 have a narrow vertical width and are almost linear cuts. This is because these are the start and end points where the tab 240 is attached to the bracket 230 and are securely fixed so as not to come off the bracket 230. On the other hand, both the second slit 244 and the third slit 246 have a wide vertical width. This is because these are hook points in the middle, and emphasis is placed on easy hooking rather than reliable fixing.

  When the curtain airbag 200 is held on the bracket 230 as described above, the fixture 260 is inserted into the insertion hole 230c of FIG. As a result, the state illustrated in FIG. Thereafter, the curtain airbag 200 is fixed to the side surface portion 110 by the bracket 230, the tab 240 and the fixing device 260 by attaching the fixing device 260 to the side surface portion 110 (see FIG. 1).

  As described above, according to the curtain airbag mounting structure, the bracket, the tab, and the curtain airbag mounting method according to the present embodiment, the bracket 230 holding the curtain airbag 200 via the tab 240 is attached to the fixture 260. The curtain airbag 200 can be attached to the side surface portion 110 while being fixed to the side surface portion 110 inside the vehicle 100. Therefore, since the members required for attaching the curtain airbag 200 are only the tab 240, the bracket 230, and the fixture 260, the number of parts can be reduced, and the cost and the attaching process can be reduced. Further, by securing the slits of the tab 240 attached to the curtain airbag 200 to the upper projecting portion 230a and the lower projecting portion 230b of the bracket 230, sufficient stability is secured when the curtain airbag 200 is fixed to the bracket 230. can do.

  In the above-described embodiment, the curtain airbag 200 having the gas introduction port 202 in the middle in the longitudinal direction, that is, the inflator being connected in the middle in the longitudinal direction is illustrated, but the present invention is not limited to this.

  FIG. 7 is a diagram illustrating the connection location of the inflator to the curtain airbag 200. FIG. 7A illustrates a curtain airbag 200 according to the present embodiment, and an inflator 300 is connected at a substantially right angle in the middle in the longitudinal direction (center fill type). In another center fill type, as illustrated in FIG. 7B, there is a type in which the inflator 300 is obliquely connected to the curtain airbag 200. In addition, a front fill type in which the inflator 300 is connected to a position on the vehicle 100 front side of the curtain airbag 200 as shown in FIG. 7C, or a curtain airbag 200 as shown in FIG. There is also a rear fill type in which the inflator 300 is connected to a position on the rear side of the vehicle 100. The above-described curtain airbag mounting structure, bracket, tab, and curtain airbag mounting method can be applied to any type of curtain airbag 200 illustrated in FIG.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can be implemented or performed in various ways. Can be carried out. The invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

  Therefore, it is obvious for those skilled in the art that various changes and modifications can be conceived within the scope of the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  Moreover, in the said embodiment, although the example which applied the curtain airbag attachment structure, bracket, tab, and curtain airbag attachment method concerning this invention to the motor vehicle was demonstrated, it is applicable also to an aircraft, a ship, etc. besides a motor vehicle. It is possible and the same effect can be obtained.

  The present invention relates to a curtain airbag mounting structure, a bracket, a tab, and a curtain airbag mounting method, which are inflated and deployed along a side surface in a vehicle compartment for the purpose of passenger protection at the time of a side collision or rollover (rollover) of a vehicle. Can be used.

DESCRIPTION OF SYMBOLS 100 ... Vehicle, 110 ... Side part, 112 ... Roof side rail, 200 ... Curtain airbag, 202 ... Gas inlet, 210 ... Expansion area, 212 ... Chamber, 214 ... Duct, 216 ... Connection part, 220 ... Non-expansion area 230 ... Bracket, 230a ... Upper protrusion, 230b ... Lower protrusion, 230c ... Insertion hole, 240 ... Tab, 240a ... Mounting position, 242 ... First slit, 244 ... Second slit, 246 ... Third slit, 248 ... 4th slit, 250 ... fracture | rupture part, 260 ... fixing tool, 300 ... inflator

Claims (8)

A curtain airbag mounting structure for mounting a curtain airbag on a side surface in a vehicle compartment,
A strip-shaped tab attached to the curtain airbag;
A plate-like bracket that is erected along the side surface portion and fixes the tab to the side surface portion;
With
The bracket is
An upper projecting portion projecting upward;
A lower projecting portion projecting downward;
Have
The tab is
The tab is provided at a predetermined interval from the attachment position of the tab to the curtain airbag, and the tab is hooked on the upper projecting portion when being guided from the vehicle interior side to the side surface portion side above the bracket. A first slit;
A second slit provided at a predetermined interval from the first slit and hooked on the lower protrusion when the tab is guided from the side surface side to the vehicle compartment side below the bracket;
The tab is provided at a predetermined interval from the second slit, and the tab protrudes from the vehicle interior side to the side surface side again when the tab winds around the curtain airbag. A third slit to be hooked;
A curtain airbag mounting structure comprising:   The tab is provided at a predetermined interval from the third slit, and the tab is hooked by the lower projecting portion when the tab is again guided from the side surface side to the vehicle interior side below the bracket. The curtain airbag mounting structure according to claim 1, further comprising a slit.   3. The curtain airbag mounting structure according to claim 2, wherein either one or both of the second slit and the third slit have a vertical width larger than that of the first slit.   2. The curtain air according to claim 1, wherein the tab is further provided with a break portion that is provided between the second slit and the third slit and breaks the tab when the curtain airbag is deployed. Bag mounting structure.   The curtain airbag mounting structure according to claim 4, wherein the breaking portion is formed by a notch provided in the tab.   The curtain airbag mounting structure according to claim 5, wherein the notch has a broken line shape. A tab attached to a curtain airbag attached to a flat bracket having an upper protrusion protruding upward and a lower protrusion protruding downward;
The tab is strip-shaped,
A first slit which is provided at a predetermined interval from a position where the curtain airbag is attached, and is hooked by the upper projecting portion when the tab is guided from the vehicle interior side to the side surface side above the bracket. When,
A second slit that is provided at a predetermined interval from the first slit and is hooked to the lower protrusion when the tab is guided from the side surface side to the vehicle interior side under the bracket;
The tab is provided at a predetermined interval from the second slit, and when the tab winds around the curtain airbag and is guided again from the vehicle interior side to the side surface portion side above the bracket, A third slit to be hooked;
A tab characterized by comprising. A curtain airbag that attaches the curtain airbag to the side surface of the vehicle interior using a tab that is attached to the curtain airbag and a flat bracket that is erected along the side surface of the vehicle interior and fixes the tab. Mounting method,
The tab is guided from the vehicle interior side to the side surface side above the bracket,
The first slit provided at a predetermined interval from the attachment position of the tab to the curtain airbag is hooked to the upper protruding portion protruding upward of the bracket,
Guiding the tab from the side surface side to the vehicle interior side below the bracket;
The second slit provided at a predetermined interval from the first slit is hooked on the lower protruding portion protruding downward in the bracket,
The tab is wound around the curtain airbag and guided from the vehicle interior side to the side surface side again above the bracket,
A curtain airbag mounting method, wherein a third slit provided at a predetermined interval from the second slit is hooked on the upper projecting portion.

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