JP6450544B2 - Curtain airbag device mounting structure and curtain airbag device - Google Patents

Description

  The present invention relates to a curtain airbag device mounting structure and a curtain airbag device provided with a cushion that inflates and deploys along a side surface in a vehicle compartment for the purpose of protecting an occupant at the time of a vehicle side collision or rollover (rollover). It is about.

  In recent vehicles, an airbag device is almost standard equipment as a safety device. In a general airbag device, an impact is detected by a sensor, and gas is generated from an inflator (gas generator), and the cushion is inflated and deployed by the gas pressure. For example, in the case of a front airbag device, the cushion is folded and mounted at the center of the steering wheel. For example, in the case of a curtain airbag device, the cushion is wound around the side wall of the vehicle body in the form of a roll. It is installed.

  For assembling a curtain airbag device to a vehicle, attachment members such as clips and bolts have been conventionally used. For example, in Patent Literature 1, a cover body having a U-shaped cross section is attached to a folded airbag cushion (hereinafter simply referred to as a cushion), and a clip or a bolt is used on the cover body to attach a roof side rail. It is assembled. The clip is integrally formed with the resin cover body, and is elastically deformed when inserted into the hole on the vehicle body side. When the clip passes through the hole, the shape is restored and "turns back" to complete the connection to the vehicle body. . These clips, bolts and the like are used, for example, by providing a belt-like portion (tab) on a cushion of a curtain airbag device, or using a resin protector, a metal bracket, or the like.

JP 2009-90703 A

  Since the clip can be attached to the vehicle body by a simple operation of inserting it into the hole on the receiving side, it is often used as a means for attaching the cushion of the curtain airbag device to the vehicle body via a tab provided on the upper edge thereof. The However, since the clip is made of resin and is connected to the hole by fitting using elastic deformation, the attachment strength to the hole is likely to be lower than bolt fastening or the like. In particular, when the cushion of the curtain airbag device is inflated and deployed downward from the mounting position and a load that is pulled downward is applied to the clip, if the clip deforms and falls out of the hole on the receiving side, , It can also lead to the cushion falling off the side wall.

  Also, the cushion of the curtain airbag may be attached to the vehicle body via a protector that covers the side wall of the cushion. Clips are often used as a means to attach the protector to the vehicle body, but if the load generated when the cushion part is inflated and deployed concentrates on the attachment part of the protector to the car body, this may also cause the protector and eventually the cushion to fall off the car body side wall. Absent.

  In order for the curtain airbag device to exert its function suitably, it is desired to prevent the cushion from dropping off from the side wall of the vehicle body.

  In view of such a problem, an object of the present invention is to provide a curtain airbag device mounting structure and a curtain airbag device that can effectively prevent the cushion from falling off the vehicle body.

  In order to solve the above problems, a typical structure of the curtain airbag device mounting structure according to the present invention includes a curtain airbag device, and the curtain airbag device mounting structure for mounting the curtain airbag device to a vehicle body includes: The curtain airbag device is configured in a bag shape, is mounted on a vehicle in a slender storage form by being wound or folded, and is a belt-shaped cushion that expands so as to cover the side window of the vehicle in an emergency. A tab provided on the upper edge of the cushion, and the curtain airbag device mounting structure further includes a clip for fixing the tab to a predetermined member constituting the vehicle body, and the expansion and deployment of the curtain airbag device. Clip drop prevention means that enables the clip insertion port to move following the force applied to the clip, and the clip The drop prevention means has a first clip fixing seat surface including a first clip insertion opening provided on a predetermined member and into which the clip is inserted, and moves the clip by deforming the first clip fixing seat surface. It is characterized by making it.

  According to the above configuration, even if a load is applied to the clip when the cushion is inflated and deployed, the first clip fixing seating surface including the first clip insertion port can be deformed following the force received by the clip. Can be absorbed. Therefore, it is possible to prevent the cushion from falling off the vehicle body by effectively preventing the clip from dropping from the first clip insertion opening.

  The clip drop prevention means may include a slit that is continuously provided on the first clip fixing seat surface so as to surround any one of the upper, lower, left, and right sides of the first clip insertion opening. According to this configuration, the periphery of the first clip insertion opening becomes a free end and can be moved away from other regions.

  The slits may be provided on the upper side of the first clip insertion port and on both the front and rear sides of the vehicle. According to this configuration, the vicinity of the first clip insertion opening is deformed downward and can be moved. Since the expansion and expansion of the cushion mainly occurs downward, this configuration makes it possible to suitably absorb the load during expansion and expansion.

  The clip drop prevention means may include a thin portion that is provided on the first clip fixing seat surface so as to surround any one of the upper, lower, left, and right sides of the first clip insertion opening and that is torn when the cushion is inflated and deployed. This thin portion can also be moved away from other regions with the first clip insertion port periphery as a free end.

  The thin portion may be provided on the upper side of the first clip insertion port and on both the front and rear sides of the vehicle. According to this configuration, the vicinity of the first clip insertion opening can be moved downward. Since the expansion and expansion of the cushion mainly occurs downward, this configuration makes it possible to suitably absorb the load during expansion and expansion.

  The predetermined member may include a roof side rail extending in the vehicle front-rear direction above the side window. The predetermined member may include a bracket that is fixed above the side window and supports the cushion. Even with these roof side rails and brackets, the first clip insertion slot, the first clip fixing seating surface, and the clip drop prevention means can be suitably implemented.

  The curtain airbag device further includes a protector that extends along a predetermined range in the longitudinal direction of the cushion of the storage form and covers the vehicle body side of the cushion, and the clip drop prevention means is further provided on the protector, and the clip is inserted. The second clip fixing seat surface including the second clip insertion port to be inserted may be provided, and the clip may be moved by deforming the second clip fixing seat surface together with the first clip fixing seat surface. Even in this configuration, by moving the first and second clip fixing seat surfaces together, the load applied to the clip is absorbed, and the clip can be effectively removed from the first and second clip insertion openings. Can be prevented.

  The clip drop prevention means may further include a slit continuously provided on the second clip fixing seat surface so as to surround any one of the upper, lower, left and right sides of the second clip insertion opening. In addition, the slits may be provided on the upper side of the second clip insertion port and on both the front and rear sides of the vehicle. According to these, the periphery of the second clip insertion opening becomes a free end and can be moved away from other regions.

  The clip drop prevention means may further include a thin portion that is provided on the second clip fixing seat surface so as to surround any one of the upper, lower, left, and right sides of the second clip insertion opening and that is cleaved when the cushion is inflated and deployed. . Further, the thin portion may be provided on the upper side of the second clip insertion port and on both the front and rear sides of the vehicle. Also by this thin part, it can move apart from another area | region by making the 2nd clip insertion port periphery into a free end.

  The protector may include an attachment portion that is attached to the vehicle body, and a hook portion that protrudes toward the vehicle body and is inserted into the vehicle body and moored. As described above, the protector is provided with an attachment portion and a hook portion different from the attachment portion. According to this hook part, the load generated when the cushion is inflated and deployed can be distributed without being concentrated on the attachment part such as a clip. Therefore, it is possible to prevent the cushion from falling off the vehicle body by preventing the protector from falling off the vehicle body.

  The protector may be formed with a plurality of ribs that protrude from the surface on the vehicle body side toward the vehicle body, and the hook portion may be provided at an end of the rib. Also with this configuration, the hook portion can be suitably implemented.

  The end portion of the rib may contact the vehicle body below the attachment portion, and the hook portion may be provided below the attachment portion among the end portions of the rib. According to this structure, a protector is supported by a rib contacting a vehicle body, and also a movement of a protector can be prevented by a hook part. Therefore, the protector improves durability against the expansion and expansion of the cushion.

  The protector is provided above the pillar garnish of the vehicle, and has a jump base portion that protrudes inward in the vehicle width direction below the cushion to prevent interference with the pillar garnish of the cushion. You may provide in the vehicle width direction outer side of a base part. As described above, the protector has improved durability against the load when the cushion is inflated and deployed, and can suitably implement the jump base portion that is susceptible to the load from the cushion.

  In order to solve the above-mentioned problems, a typical configuration of the curtain airbag device according to the present invention is configured in a bag shape, and is attached to a vehicle body in an elongated storage form by being wound or folded. A cushion that extends so as to cover the side window, a protector that extends along a predetermined range in the longitudinal direction of the cushion in the storage form, covers the vehicle body side of the cushion, a mounting portion that attaches the protector to the vehicle body, and a protector to the vehicle body And a hook portion that is inserted into the vehicle body and moored.

  The protector is provided with a hook portion different from the attachment portion. According to this hook part, the load generated when the cushion is inflated and deployed can be distributed without being concentrated on the attachment part such as a clip. Therefore, it is possible to prevent the cushion from falling off the vehicle body by preventing the protector from falling off the vehicle body.

  The protector may be formed with a plurality of ribs that protrude from the surface on the vehicle body side toward the vehicle body, and the hook portion may be provided at an end of the rib. Also with this configuration, the hook portion can be suitably implemented.

  The end portion of the rib may be in line contact with the vehicle body below the attachment portion, and the hook portion may be provided below the attachment portion among the end portions of the rib. According to this structure, a protector is supported by a rib contacting a vehicle body, and also a movement of a protector can be prevented by a hook part. Therefore, the protector improves durability against the expansion and expansion of the cushion.

  The protector is provided above the pillar garnish of the vehicle, and has a jump base portion that protrudes inward in the vehicle width direction below the cushion to prevent interference with the pillar garnish of the cushion. You may provide in the vehicle width direction outer side of a base part. As described above, the protector has improved durability against the load when the cushion is inflated and deployed, and can suitably implement the jump base portion that is susceptible to the load from the cushion.

  According to the present invention, it is possible to provide a curtain airbag device mounting structure and a curtain airbag device that can effectively prevent the cushion from falling off the vehicle body.

It is the figure which illustrated the attachment structure for curtain airbag devices concerning the embodiment of the present invention. It is the figure which illustrated the curtain airbag apparatus of Fig.1 (a) independently. It is the figure which illustrated the rear part protector of FIG. 2 from each direction. It is the figure which illustrated the detail of the tab attaching part of Fig.3 (a). It is the figure which illustrated fixation to the vehicle body of the curtain airbag apparatus of FIG.4 (b). It is an expansion perspective view of the front protector of Drawing 2 (b). It is an expansion perspective view of the center protector of FIG.2 (b). It is the modification of the clip drop-off prevention means implemented in the tab attachment part of Fig.4 (a). It is the figure which illustrated the attachment structure for curtain airbag apparatuses concerning 2nd Embodiment of this invention. It is the figure which illustrated the attachment structure for curtain airbag apparatuses concerning 3rd Embodiment of this invention. It is the figure which illustrated the protector which the attachment structure for curtain airbag apparatuses concerning 4th Embodiment of this invention contains. It is the figure which illustrated the protector which the attachment structure for curtain airbag apparatuses concerning 4th Embodiment of this invention contains. It is a figure corresponding to the FF cross section of FIG.12 (b). It is the figure which illustrated the modification of the protector of FIG.

  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 embodiments 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.

(Mounting structure for curtain airbag device)
FIG. 1 is a diagram illustrating a curtain airbag device mounting structure (mounting structure 101) according to an embodiment of the present invention. FIG. 1A is a view of the interior of the vehicle as viewed from the vehicle inner side in the vehicle width direction, and illustrates a storage form of the cushion 102 of the curtain airbag device (curtain airbag 100). The cushion 102 is a portion that is inflated and deployed in an emergency to protect the occupant, and FIG. 1B illustrates the cushion 102 being inflated and deployed. In the present application, the expression “upper” indicates the vehicle ceiling direction as viewed from the point of interest, and the expression “lower” indicates the vehicle floor direction as viewed from the point of interest.

  As illustrated in FIG. 1A, the cushion 102 is wound to form a roll-shaped storage configuration that is long in the front-rear direction of the vehicle, and is mounted on an upper portion (roof side rail 104) of the side wall of the vehicle body. Usually, the roof side rail 104 is covered with a roof trim (not shown). That is, the cushion 102 is housed in a space between the roof side rail 104 and the roof trim, and is not visible from the passenger compartment where the passenger is present. Therefore, it should be noted that even if there is a description “viewing the cushion 102 from the vehicle interior” in the text, the cushion 102 that is originally invisible from the vehicle interior is visualized by omitting the roof trim. The storage form of the cushion 102 can also be realized by folding.

  In the state of FIG. 1 (a), when a side collision or rollover (rollover) occurs in the vehicle 108, a sensor (not shown) provided in the vehicle 108 first detects an impact, resulting in gas A signal is transmitted to the inflator 106 which is a generator. Upon receiving this signal, the inflator 106 operates and supplies gas to the cushion 102. When the gas from the inflator 106 is received, the cushion 102 expands and develops downward along the side wall of the vehicle body (such as the side window 110 in FIG. 1A) as illustrated in FIG. 1B. , Restrain the occupant.

  The cushion 102 is for a curtain airbag and has a large shape that can expand along the side surface of the vehicle interior. The cushion 102 is formed into a bag shape by sewing and bonding two base fabrics constituting the surface thereof, sewing or bonding using OPW (One-Piece Woven).

  The inflating region of the cushion 102 is partitioned into a plurality of small rooms (chambers) in consideration of the position where the occupant can contact. For example, as illustrated in FIG. 1B, a chamber 114 and the like are provided on the front side of the vehicle for the purpose of protecting passengers in the front seat 112. Further, on the rear side of the vehicle, a chamber 120 and the like for protecting the occupant of the rear seat 118 are provided. Each of these chambers is partitioned by a seam portion 122 or the like that is a linear non-inflatable region.

  FIG. 2 is a diagram exemplarily showing the curtain airbag device 100 of FIG. Fig.2 (a) is an enlarged view of the curtain airbag 100 of Fig.1 (a). As illustrated in FIG. 2A, the curtain airbag 100 is configured to be long in the vehicle front-rear direction when the cushion 102 is stored. A tab structure 124 protrudes upward at various locations of the curtain airbag 100, and a clip 126 (see FIG. 4C) is used for the tab structure 124, and the roof side rail 104 (see FIG. 1A). Assembled into.

  FIG. 2B is an exploded view of the curtain airbag 100 of FIG. In the present embodiment, three protectors are assembled to the cushion 102. For example, a front protector 128 is assembled to the front of the cushion 102, a central protector 130 is assembled to the center, and a rear protector 132 is assembled to the rear. Each of these protectors is made of resin and is disposed between the cushion 102 and the roof side rail 104 (see FIG. 1A) to prevent the cushion 102 from interfering with other members and the cushion 102 is inflated. It plays a role of applying a reaction force to the cushion 102 during deployment.

  The curtain airbag 100 shown in FIG. 2A has a plurality of tab structures protruding upward. In FIG. 2A, the last tab structure is designated by reference numeral 124 as a representative of the tab structures. doing. The plurality of tab structures described above are a combination of the respective tab attachment portions of the protectors 128, 130, and 132 in FIG. 2B and the plurality of tabs of the cushion 102, and the last tab structure shown as a representative. Reference numeral 124 denotes a combination of the tab attachment portion 134 of the rear protector 132 and the tab 136 of the cushion 102. The tabs 136 are a plurality of belt-like portions provided near the upper edge of the cushion 102 and extend upward from the roll body of the cushion 102. The tab 136 has a hole 138, which is combined with the tab attachment portion 134, and a clip 126 (see FIG. 4B) is inserted into the tab 136 so that the roof side rail 104 (see FIG. 1A) is assembled. It is done.

  Note that the cushion 102 is provided with an inflator mounting portion 140 at an upper portion on the rear side. The inflator mounting portion 140 is cylindrical, and the inflator 106 is inserted with the gas ejection hole at the tip side. The inflator 106 employed in this embodiment is a cylinder type (cylindrical type). Inflators that are currently popular are types that are filled with a gas generating agent and burn it to generate gas, types that are filled with compressed gas and supply gas without generating heat, and There are types including both a gas generating agent and a compressed gas. Any type of inflator 106 may be used.

  The tab structure 124 of the curtain airbag 100 of the present embodiment is provided with clip drop prevention means for preventing the clip 126 (see FIG. 4B) from dropping from each protector. FIG. 3 is a diagram illustrating the rear protector 132 of FIG. 2 from each direction. Prior to the description of the tab structure 124, the outline of the rear protector 132 will be described first.

  FIG. 3A is an enlarged view of the rear protector 132 in FIG. The rear protector 132 has a shape extending along the longitudinal direction of the cushion 102 (see FIG. 2B) in the storage form. FIG. 3B is a perspective view of the rear protector 132 in FIG. 3A as viewed from the front of the vehicle. The rear protector 132 has a curved portion 142 that is curved along the outer periphery of the storage-type cushion 102, and the cushion 102 is assembled to the curved portion 142. FIG. 3C is a perspective view of the rear protector 132 in FIG. 3A viewed from the outside in the vehicle width direction (hereinafter referred to as the vehicle outer side). On the vehicle exterior side of the rear protector 132, ribs 144 are provided at various places. The rib 144 improves the rigidity of the rear protector 132 so that the rear protector 132 can withstand the load when the cushion 102 is inflated and deployed.

  The tab attaching part 134 is a part which comprises the tab structure 124 of Fig.2 (a). As illustrated in FIG. 3A, the rear protector 132 is provided with two tab attachment portions 134 and 135. Since these tab attaching portions 134 and 135 have the same structure and function, the tab attaching portion 134 will be described as an example. The tab attachment portion 134 has a second clip fixing seating surface 139 that expands in a plane. A second clip insertion port 146 into which the clip 126 is inserted and fixed is opened at the center of the second clip fixing seat surface 139. As illustrated in FIG. 3B, the edge 148 of the tab attachment portion 134 rises in the vehicle width direction inner side (hereinafter, the vehicle inner side) like a wall. As illustrated in FIG. 3A, a slit 150 is formed around the second clip insertion port 146 of the second clip fixing seat surface 139. In this embodiment, the clip drop prevention means is realized including the slit 150.

  FIG. 4 is a diagram illustrating details of the tab attachment portion 134 of FIG. FIG. 4A is an enlarged view of the tab attachment portion 134 of FIG. The slit 150 is a thin hole opened in the second clip fixing seat surface 139 of the tab attachment portion 134. The slit 150 is formed in a U-shape and is continuously provided so as to surround the upper side of the second clip insertion port 146 and the left and right sides (vehicle front and rear sides). As illustrated in FIG. 4B, the tabs 136 of the cushion 102 are overlaid on the tab attachment portion 134, and these are fastened with clips 126.

  FIG. 5 is a view illustrating fixing of the curtain airbag device of FIG. 4B to the vehicle body. In the present embodiment, the curtain airbag 100 is fixed to the roof side rail 104 using the clip 126.

  FIG. 5A is a diagram illustrating the curtain airbag 100 and the roof side rail 104 to which the curtain airbag 100 is attached. The roof side rail 104 is mainly made of metal, and a flat first clip fixing seating surface 304 is provided for attaching the curtain airbag 100. The first clip fixing seat surface 304 is provided with a first first clip insertion opening 302 for inserting the clip 126. A clip 126 penetrating the tab 136 and the tab attachment portion 134 is inserted into the clip insertion opening 302. In the present embodiment, a slit 151 is also provided around the first clip insertion opening 302 in the first clip fixing seat surface 304 of the roof side rail 104.

  FIG. 5B is a diagram illustrating a state in which the curtain airbag 100 of FIG. 5A is attached to the roof side rail 104, and corresponds to a cross-sectional view of the curtain airbag 100 taken along line AA. As illustrated in FIG. 5B, the clip 126 passes through the tab 136, the second clip insertion port 146 of the tab attachment portion 134 of the rear protector 132, and the first clip insertion port of the roof side rail 104. 302 is inserted. The claw 152 of the clip 126 bends when passing through each clip insertion opening, and returns to its original state after penetration. Thereby, the assembly | attachment to the 2nd clip insertion port 146 and the 1st clip insertion port 302 of the clip 126 is completed.

  Assume that the curtain airbag 100 is operated and gas is supplied to the cushion 102 from the inflator 106 (see FIG. 2B). In that case, the cushion 102 is inflated and deployed to the vehicle interior lower side (lower left side in FIG. 5B) illustrated by the arrow 154. Since the tab 136 is also pulled in the direction of the arrow 154, a load in the direction of the arrow 154 is also applied to the clip 126. When the clip 126 receives a force, the slits 150 and 151 function.

  As illustrated in FIG. 4A, by providing the slit 150, the periphery of the second clip insertion port 146 forms a free end. In addition, as illustrated in FIG. 5A, by providing the slit 151, the periphery of the first clip insertion opening 302 also forms a free end. Therefore, when a load in the direction of the arrow 154 is applied to the clip 126 when the cushion 102 is inflated and deployed, as illustrated in FIG. 5C, the first clip fixing seat surface 304 and the second clip fixing seat surface 139 Of these, the periphery of each of the first clip insertion port 146 and the second clip insertion port 302 is separated from other regions, and the lower side without the slit 150 is deformed downward in the vehicle interior, like a hinge. Moving.

  As described above, in the present embodiment, the slits 150 and 151 are provided around the first clip insertion opening 302 and the second clip insertion opening 146, respectively, so that the clip 126 is expanded and expanded with the cushion 102. It moves while deforming following the force it receives. Since this movement can absorb the load applied to the clip when the cushion 102 is inflated and deployed, the attachment structure 101 can prevent the curtain airbag 100 from falling off the roof side rail 104 due to the destruction of the clip 126.

  The tab structure 124 in which the clip drop prevention means is described, which has been described with reference to the rear protector 132, can be applied to other protectors. FIG. 6 is an enlarged perspective view of the front protector 128 of FIG. The front protector 128 is assembled to the front portion of the cushion 102 (FIG. 2B) and is assembled near the upper portion of the front pillar 107 (see FIG. 1A). In addition, in the following specification of this application, about the structure already demonstrated, the description is abbreviate | omitted by attaching | subjecting the same code | symbol. In addition, components having the same names as the components already described have the same configuration and function even if they are given different reference numerals unless otherwise described.

  The front protector 128 has a total of four tab attachment portions 155 to 158 and one integrally formed clip 160 that is integrally formed with the front protector 128. Of the tab attachment portions 155 to 158, the slit 150 described above is formed in the tab attachment portions 155 to 157. The integrally formed clip 160 is a clip for assembling the front protector 128 to the roof side rail 104 (see FIG. 1B). FIG. 6B is a perspective view illustrating the front protector 128 of FIG. The integrally formed clip 160 protrudes from the front protector 128 toward the roof side rail side in the vehicle width direction. .

  Since the tab attachment portions 155 to 157 have the same structure and function, the tab attachment portions 157 are representatively described. FIG. 6C is an enlarged view of the vicinity of the tab attachment portion 157. A second clip insertion opening 146 is also opened at the center portion of the second clip fixing seat surface 159 of the tab attachment portion 157. A slit 150 is formed around the second clip insertion port 146 of the second clip fixing seat surface 159. Accordingly, the tab attaching portions 155 to 157 of the front protector 128 are also assembled with the first clip insertion port 146 of the roof side rail 104 (see FIG. 5A), so that the cushion 102 is inflated and deployed. Thus, the clip 126 (see FIG. 5B) moves while deforming following the force received and absorbs the load, thereby preventing the curtain airbag 100 from falling off due to the destruction of the clip 126.

  FIG. 7 is an enlarged perspective view of the central protector 130 of FIG. FIG. 7A is a perspective view illustrating the central protector 130 of FIG. 2B from the front of the vehicle. The central protector 130 is assembled near the center of the cushion 102 (FIG. 2B), and is assembled to the roof side rail 104 while supporting the inflator 106. FIG. 7B is a perspective view illustrating the central protector 130 of FIG. The central protector 130 has one tab mounting portion 162 and one clip 160 that is integrally molded with the central protector 130.

  FIG.7 (c) is an enlarged view of the tab attaching part 164 of Fig.7 (a). Also in the second clip fixing seat surface 159 of the tab mounting portion 164, a second clip insertion port 146 is opened in the center portion, and a slit is formed around the second clip insertion port 146 of the second clip fixing seat surface 159. 150 is formed. Therefore, the tab attachment portion 164 of the central protector 130 is also assembled to the first clip insertion port 146 of the roof side rail 104 (see FIG. 5A), so that the clip 126 is expanded as the cushion 102 is expanded and deployed. By moving while deforming following the force received (see FIG. 5B) and absorbing the load, it is possible to effectively prevent the clip 126 from dropping due to the destruction of the clip 126.

(Modification)
FIG. 8 is a modification of the clip drop prevention means implemented in the tab mounting portion 134 of FIG. The tab attachment portion 134 of FIG. 8 is different from the configuration of FIG. 4 in that the clip drop prevention means is realized by the thin portion 166 instead of the slit 150.

  FIG. 8A is a diagram illustrating the tab attachment portion 134 corresponding to FIG. 4A. The thin portion 166 is a thin portion formed on the second clip fixing seat surface 139 of the tab attachment portion 134. The thin portion 166 is formed in a U shape and is continuously provided so as to surround the upper side of the second clip insertion port 146 and the left and right sides (vehicle front and rear sides).

  FIG. 8B is a view corresponding to the BB cross section of FIG. 8A, and is a view in which the tab attaching portion of FIG. 8A is assembled to the roof side rail of FIG. 5A. . As illustrated in FIG. 8B, tabs 136 of the cushion 102 are overlaid on the tab attachment portion 134, and these are assembled to the first clip insertion opening 302 of the roof side rail 104 by the clip 126.

  When gas is supplied to the cushion 102 from the inflator 106 (see FIG. 2B), a load in the arrow direction 154 is applied to the tab 136 and the clip 126. The thin portion 166 is cleaved when receiving this load. Then, the periphery of the second clip insertion port 146 illustrated in FIG. 8A becomes a free end, and the vicinity of the second clip insertion port 146 of the second clip fixing seat surface 139 as illustrated in FIG. 8C. Moves away from other areas while deforming downward in the vehicle. As described above, even by providing the thin wall portion 166, the periphery of the second clip insertion port 146 moves while deforming following the force received by the clip 126 as the cushion expands and expands. The load at the time of expansion and deployment can be absorbed. Therefore, the clip drop prevention means using the thin wall portion 166 in this modification can also effectively prevent the curtain airbag 100 from dropping due to the destruction of the clip 126.

(Second Embodiment)
FIG. 9 is a view illustrating a curtain airbag device mounting structure (hereinafter referred to as mounting structure 201) according to the second embodiment of the present invention. The mounting structure 200 of this embodiment is provided with a bracket 202, and is different from the mounting structure 101 of the first embodiment of FIG.

  The bracket 202 is made of metal, and is fixed to the roof side rail 104 (see FIG. 1A) by welding, bolt fastening, or the like using the leg portion 204, and supports the cushion 102. The bracket 202 is provided with a first clip fixing seat surface 209 that expands in a plane, and a first clip insertion port 206 is provided near the center of the first clip fixing seat surface 209. A slit 153 is provided around the first clip insertion opening 206. A resin protector 208 is assembled to the cushion 102.

  The protector 208 is a member that covers the roof side rail 104 side of the cushion 102 as in the case of the rear protector 132 (see FIG. 2B). The protector 208 is provided with a tab attachment portion 210, and the clip 136 is used in combination with the tab 136 and connected to the bracket 202. The tab attachment portion 210 is also provided with a second clip insertion port 146 in the second clip fixing seat surface 139, and a slit 150 around the second clip insertion port 146.

  FIG. 9B is a cross-sectional view taken along the line C-C in FIG. 9A, and illustrates a state in which the tab attaching portion 210 is assembled to the bracket 202 with the clip 126. When gas is supplied to the cushion 102, a load in the direction of the arrow 154 is applied to the tab 136 and the clip 126. Then, as illustrated in FIG. 9C, the periphery of the first clip insertion port 206 and the second clip insertion port 146 out of the first clip fixing seat surface 209 and the second clip fixing seat surface 139. Moves away from the other region of the bracket 202 while deforming downward in the vehicle interior. As described above, the configuration in which the first clip insertion opening 206 and the slit 153 are provided in the bracket 202 can also absorb the load by moving the clip 126 during operation of the inflator 106 (see FIG. 1A). Therefore, this embodiment can also prevent the clip 126 from falling off the bracket 202 and the protector 208, and prevent the curtain airbag 200 from falling off the roof side rail 104.

(Third embodiment)
FIG. 10 is a view illustrating a curtain airbag device mounting structure (hereinafter referred to as mounting structure 301) according to the third embodiment of the present invention. As described above, the roof side rail 104 illustrated in FIG. 10A is mainly made of metal and has a flat first clip fixing seating surface 304 and a first clip insertion opening that receives the clip 126. 302 is provided. The clip 126 is inserted into the clip insertion opening 302 through the tab 136 and the tab attachment portion 134.

  In the mounting structure 301 of the present embodiment, a slit 151 is provided around the first clip insertion opening 302 of the roof side rail 104, while a slit 150 (see FIG. 4A) is provided in the tab mounting portion 134 of the protector 132. Reference) is not provided. This embodiment is different from each of the above embodiments in that clip drop prevention means is realized by the first clip insertion opening 302 and the slit 151 only on the first clip fixing seat surface 304 of the roof side rail 104. ing.

  FIG.10 (b) is sectional drawing of the curtain airbag 300 corresponding to the DD cross section of Fig.10 (a). When gas is supplied to the cushion 102, a load in the direction of the arrow 154 is applied to the tab 136 and the clip 126. Then, as illustrated in FIG. 10C, the vicinity of the first clip insertion opening 302 of the first clip fixing seat surface 304 is separated from other regions on the roof side rail 104 and deformed downward in the vehicle interior. Move while. As described above, the load can be absorbed by moving the clip 126 only by providing the slit 150 around the first clip insertion opening 302 of the roof side rail 104. Therefore, also in this embodiment, it is possible to prevent the curtain airbag 300 from falling off the roof side rail 104 through preventing the clip 126 from dropping from the first clip insertion opening 302.

(Modification)
FIG. 11 is a modified example of the curtain airbag device mounting structure 300 of FIG. The curtain airbag device mounting structure (hereinafter referred to as mounting structure 351) of the present modification is the same as the mounting structure 301 of FIG. 10 in that the tab 136 is assembled directly to the roof side rail 104 with the clip 126 without using protectors. Is different.

  The roof side rail 104 is provided with the first clip fixing seat surface 304, the first clip insertion port 302, and the slit 151 described above. In the present embodiment, the clip 126 penetrating the tab 136 is inserted into the clip insertion opening 302 without using a protector. As a result, the curtain airbag 350 is assembled to the roof side rail 104.

  FIG.11 (b) is EE sectional drawing of Fig.11 (a). As illustrated in FIG. 11C, the clip 126 passes through the tab 136 and is inserted into the first clip insertion opening 302 of the roof side rail 104. The claw 152 of the clip 126 bends when passing through the first clip insertion opening 302 and returns to its original state after penetration. Thereby, the assembly | attachment to the 1st clip insertion port 302 of the clip 126 is completed.

  Assume that the curtain airbag 100 is operated and gas is supplied to the cushion 102 from the inflator 106 (see FIG. 2B). In that case, the cushion 102 inflates and expands to the vehicle interior lower side (lower left side in FIG. 11B) exemplified by the arrow 154. Since the tab 136 is also pulled in the direction of the arrow 154, a load in the direction of the arrow 154 is also applied to the clip 126. When this clip 126 receives a force, the slit 151 functions.

  As illustrated in FIG. 11A, by providing the slit 151, the periphery of the first clip insertion opening 302 forms a free end. Therefore, when a load in the direction of the arrow 154 is applied to the clip 126 when the cushion 102 is inflated and deployed, as illustrated in FIG. 11C, the periphery of the first clip insertion opening 302 in the first clip fixing seat surface 304 Moves away from the other areas while deforming downward in the vehicle interior, with the lower side without the slit 151 as a hinge.

  As described above, in the present embodiment, the slit 151 is provided in the roof side rail 104 so that the periphery of the first clip insertion opening 302 follows the force received by the clip 126 as the cushion 102 expands and deploys. Move while deforming. Since this movement can absorb the load applied to the clip when the cushion 102 is inflated and deployed, the attachment structure 351 can prevent the curtain airbag 100 from falling off the roof side rail 104 due to the destruction of the clip 126.

(Fourth embodiment)
FIG. 12 is a view illustrating a protector 402 included in a curtain airbag device mounting structure (hereinafter referred to as a mounting structure 401) according to a fourth embodiment of the present invention. FIG. 12A is a perspective view illustrating the protector 402 from the inside of the vehicle. The protector 402 is also devised to prevent it from falling off the roof side rail 104.

  The protector 402 also extends along a predetermined range in the longitudinal direction of the cushion 102 (see FIG. 2B) in the storage form, and covers the cushion 102 on the roof side rail 104 side. The protector 402 is assembled to the cushion 102 above the center pillar 109 in FIG. The protector 402 has a jump base portion 404 at the lower part inside the vehicle. The jumping base portion 404 extends while inclining toward the inner side of the vehicle, and prevents the cushion 102 from interfering with a pillar garnish 406 of a center pillar 109 described later.

  FIG. 12B is a perspective view of the protector 402 of FIG. As illustrated in FIG. 12B, the protector 402 includes two tab attachment portions 408 and 409 and one integrally formed clip 160 as attachment portions to the roof side rail 104. The tab attachment portions 408 and 409 are assembled to the roof side rail 104 by the clip 126 with the tabs 136 (see FIG. 13A) of the cushion 102 overlapped. The integrally formed clip 160 is integrally formed with the protector 402 and is assembled to the roof side rail 104.

  A plurality of ribs 410 are provided on the vehicle exterior side of the protector 402. The rib 410 improves the rigidity of the protector 402 so that the protector 402 can withstand the load when the cushion 102 is inflated and deployed. A hook portion 412 is provided at each end of the rib 410 at its end. The hook portion 412 is inserted into a predetermined opening provided in the roof side rail 104 and moored.

  FIG. 13 is a view corresponding to the FF cross section of FIG. As illustrated in FIG. 13A, the clip 126 passes through the tab 136 and the tab attachment portion 408 and is assembled to the roof side rail 104. The rib 410 protrudes from the outer surface of the protector 402 toward the roof side rail 104. The hook portion 412 also protrudes toward the roof side rail 104, is inserted into the opening of the roof side rail 104, and is moored. A protruding portion 414 is provided below the hook portion 412 in the rib 401, and contacts the vehicle body wall of the roof side rail 104 by the protruding portion 414. The protector 402 is gripped by the roof side rail 104 by the protruding portion 414 and the barb 416 of the hook portion 412.

  As illustrated in FIG. 13B, when gas is supplied to the cushion 102 of the curtain airbag device (hereinafter referred to as the curtain airbag 400), the jump base portion 404 guides the cushion 102 toward the vehicle interior, and the cushion 102 Presses the roof trim 418 to expand and deploy downward. In this way, the cushion 102 can overcome the pillar garnish 406 by the jump base portion 404 and can smoothly inflate and deploy it without interfering with the pillar garnish 406.

  A large load is applied to the jump base portion 404 from the cushion 102. Therefore, a rib 410 and a hook portion 412 are provided on the vehicle outer side of the jump base portion 404 in the protector 402. First, since the rib 410 is provided, the pressure resistance of the jump base portion 404 is improved and deformation can be prevented. And since the hook part 412 is moored to the roof side rail 104, the position shift of a jump stand part 404, a deformation | transformation, etc. can be prevented.

  In the present embodiment, a hook portion 412 and a protruding portion 414 are provided below the clip 126 that is an attachment portion of the protector 402 to the roof side rail 104. If the hook part 412 and the protrusion part 414 are not provided, the load received from the cushion 102 is concentrated on the clip 126 above. However, according to the present embodiment, the load from the cushion 102 can be distributed without being concentrated on the clip 126 by the hook portion 412 and the protruding portion 414. Therefore, it is possible to efficiently prevent the protector 402 from falling off the roof side rail 104.

(Modification)
FIG. 14 is a diagram illustrating a 402 modification of the protector of FIG. A protector 450 illustrated in FIG. 14A is different from the protector 402 in FIG. 12B in the shape of the hook portion 452. As illustrated in FIG. 14B, the hook portion 452 of the protector 450 has no change and has a simple shape. However, the hook portion 452 is provided outside the jump base portion 404. Even with the hook portion 452 having this simple shape, the downward load on the jump base portion 404 can be suitably supported by the cushion 102 by being inserted into a predetermined opening provided in the roof side rail 104. it can.

  The protector 470 illustrated in FIG. 14C also has a hook portion 472 having a shape different from that of each of the protectors. As illustrated in FIG. 14D, the protector 470 has a hook portion 472 having an upward barb 474 at the upper portion of the rib 410, and a protrusion 476 having a longer upper edge at the lower portion of the rib 410. Yes. The hook portion 472 is moored to the roof side rail 104 on the upper side. Therefore, when the load in the direction in which the clip 126 is pulled out from the protector 470, specifically, when the protector 470 tries to rotate counterclockwise in FIG. 14D, the barb 447 is caught on the upper end of the opening of the roof side rail 104. As a result, the protector 470 can withstand the load and is prevented from rotating, and the clip 126 can be prevented from falling off. Similarly, the upper edge of the protrusion 476 can also interfere with the roof side rail 104 to withstand the load.

  As mentioned above, although divided and demonstrated to Embodiment 1-4, the technical idea which each of these embodiment has is simultaneously implemented with respect to one attachment structure for curtain airbag devices, or one curtain airbag device. It is also possible to For example, the ribs and hooks described with reference to FIGS. 12 and 14 may be implemented on the front protector 128, the central protector 130, and the rear protector 132 illustrated in FIG. 2B. According to this configuration, the double measures of preventing the clip and the protector from falling off can more fully prevent the cushion 102 from falling off the roof side rail 104. Further, the bracket 202 of FIG. 9 is installed in the range without the protector in the cushion 102 of FIG. 2B, or the slit 151 of FIG. 10 is provided on the roof side rail 104 at the tab mounting portion without the slit. It is also possible to do.

  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 by various methods. 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.

  INDUSTRIAL APPLICABILITY The present invention can be used in a curtain airbag device provided with a cushion that inflates and deploys along a side surface in a vehicle compartment for the purpose of protecting an occupant during a vehicle side collision or rollover (rollover).

DESCRIPTION OF SYMBOLS 100 ... Curtain airbag, 101 ... Mounting structure, 102 ... Cushion, 104 ... Roof side rail, 106 ... Inflator, 107 ... Front pillar, 108 ... Vehicle, 109 ... Center pillar, 110 ... Side window, 112 ... Front seat, 114 ... chamber, 118 ... rear seat, 120 ... chamber, 122 ... seam portion, 124 ... tab structure, 126 ... clip, 128 ... front protector, 130 ... center protector, 132 ... rear protector, 134 ... tab attachment, 136 ... Cushion tab, 138 ... Tab hole, 140 ... Inflator attachment part, 142 ... Curved part of rear protector, 144 ... Rib, 146 ... Second clip insertion port, 148 ... Edge of tab attachment part, 150 ... Protector Slit of 151, roof side rail slit, 15 ... Claws, 153 ... Bracket slits, 154 ... Arrows, 155 to 158 ... Tab attachment parts, 160 ... Integrated molding clips, 162 ... Tab attachment parts, 164 ... Tab attachment parts, 166 ... Thin wall parts, 200 ... Curtain airbags, DESCRIPTION OF SYMBOLS 201 ... Mounting structure, 202 ... Bracket, 204 ... Leg part of bracket, 206 ... 1st clip insertion port of a bracket, 208 ... Protector, 210 ... Tab attaching part, 300 ... Curtain airbag, 301 ... Mounting structure, 302 ... First clip insertion opening of roof side rail, 350 ... curtain airbag, 351 ... mounting structure, 352 ... free end, 400 ... curtain airbag, 401 ... mounting structure, 402 ... protector, 404 ... jump stand portion, 406 ... Pillar garnish, 408 .. tab attachment portion, 410 .. rib, 412... Hook portion, 41 ... protrusion, 416 ... barb of the hook portion, 418 ... roof trim, 450 ... protector, 452 ... hook portion, 470 ... protector, 472 ... hook portion, 474 ... barb of the hook portion, 476 ... projecting portion

Claims (18)

In a curtain airbag device mounting structure comprising a curtain airbag device and attaching the curtain airbag device to a vehicle body,
The curtain airbag device includes:
A cushion that is configured in a bag shape, mounted on the vehicle in a slender storage form by being wound or folded, and deployed so as to cover the side window of the vehicle in an emergency,
A tab that is belt-shaped and provided on the upper edge of the cushion;
A protector that extends along a predetermined range in the longitudinal direction of the cushion in the storage form and covers the vehicle body side of the cushion;
Have
The protector is
An attachment portion attached to the vehicle body;
A hook portion protruding toward the vehicle body and inserted into the vehicle body and moored;
Have
The curtain airbag device mounting structure further includes:
A clip for fixing the tab to a predetermined member constituting the vehicle body;
Clip drop prevention means for allowing the clip to move following the force received by the clip as the curtain airbag device is inflated and deployed;
With
The clip drop prevention means is:
A first clip fixing seat surface including a first clip insertion opening provided on the predetermined member and into which the clip is inserted ;
A second clip fixing seat surface provided on the protector and including a second clip insertion port into which the clip is inserted;
Have
An attachment structure for a curtain airbag device, wherein the clip is moved by deforming the second clip fixing seat surface together with the first clip fixing seat surface.   2. The clip drop prevention means includes a slit provided on the first clip fixing seat surface continuously so as to surround any one of the upper, lower, left and right sides of the first clip insertion opening. 2. A mounting structure for a curtain airbag device according to 1.   3. The curtain airbag device mounting structure according to claim 2, wherein the slit is provided on an upper side of the first clip insertion port and on both front and rear sides of the vehicle.   The clip drop prevention means includes a thin portion that is provided on the seat surface for fixing the first clip so as to surround any one of the upper, lower, left, and right sides of the first clip insertion port, and is torn when the cushion is inflated and deployed. The attachment structure for a curtain airbag device according to claim 1.   The attachment structure for a curtain airbag device according to claim 4, wherein the thin portion is provided on an upper side of the first clip insertion port and on both front and rear sides of the vehicle.   The curtain airbag mounting structure according to any one of claims 1 to 5, wherein the predetermined member includes a roof side rail extending in a vehicle front-rear direction above the side window.   The curtain airbag device mounting structure according to any one of claims 1 to 5, wherein the predetermined member includes a bracket that is fixed above a side window and supports the cushion. The clip drop prevention means further includes a slit provided in the second clip fixing seat surface continuously so as to surround any one of the upper, lower, left and right sides of the second clip insertion opening. 2. A mounting structure for a curtain airbag device according to 1 . 9. The curtain airbag device mounting structure according to claim 8 , wherein the slits are provided on the upper side of the second clip insertion port and on both the front and rear sides of the vehicle. The clip drop-off prevention means further includes a thin-walled portion provided on the second clip fixing seat surface so as to surround any one of the upper, lower, left and right sides of the second clip insertion opening and cleaved when the cushion is expanded and deployed. The curtain airbag device mounting structure according to claim 1 . The attachment structure for a curtain airbag device according to claim 10 , wherein the thin portion is provided on an upper side of the second clip insertion port and on both sides of the vehicle front and rear. The protector is formed with a plurality of ribs projecting from the surface of the vehicle body toward the vehicle body,
The attachment structure for a curtain airbag device according to claim 1 , wherein the hook portion is provided at an end of the rib. The end portion of the rib can contact the vehicle body below the attachment portion,
The attachment structure for a curtain airbag device according to claim 12 , wherein the hook portion is provided below the attachment portion in an end portion of the rib. The protector is provided above a pillar garnish of a vehicle, and has a jump base portion that protrudes inward in the vehicle width direction below the cushion and prevents interference of the cushion with the pillar garnish.
The attachment structure for a curtain airbag device according to claim 12 or 13 , wherein the rib and the hook portion are provided on the outer side in the vehicle width direction of the jump base portion. Cushion that is configured in a bag shape, attached to the vehicle body in a slender storage form by being wound or folded, and deployed to cover the side window in an emergency,
A protector that extends along a predetermined range in the longitudinal direction of the cushion in the storage form and covers the vehicle body side of the cushion;
A mounting portion for attaching the protector to the vehicle body;
A hook portion protruding from the protector toward the vehicle body and inserted into the vehicle body and moored;
A curtain airbag device comprising: The protector is formed with a plurality of ribs projecting from the surface of the vehicle body toward the vehicle body,
The curtain airbag device according to claim 15 , wherein the hook portion is provided at an end portion of the rib. The end portion of the rib can contact the vehicle body below the attachment portion,
The curtain airbag device according to claim 16 , wherein the hook portion is provided below the attachment portion in an end portion of the rib. The protector is provided above a pillar garnish of a vehicle, and has a jump base portion that protrudes inward in the vehicle width direction below the cushion and prevents interference of the cushion with the pillar garnish.
The curtain airbag device according to claim 16 or 17 , wherein the rib and the hook portion are provided on the outer side in the vehicle width direction of the jump base portion.

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