JP2008183968A - Vehicular roof trim - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular roof trim capable of setting a reinforcing member without being restricted in layout, and smoothly deploying a curtain airbag even if the reinforcing member is set to a roof trim end side. <P>SOLUTION: The vehicular roof trim 100 comprises an opening 10 for a sun roof, and reinforcing members 30A, 30B for reinforcing a roof trim side 20. The reinforcing members 30A, 30B are arranged on a roof trim side 20 so as to cover a roof trim side end 20A side, and have hinge means 40A, 40B for folding a reinforcing member 34 corresponding to the roof trim side end 20A side inward of a cabin R when the curtain airbag 50 is inflated. Thus, the reinforcing members 30A, 30B can be set without being restricted in the layout, and the curtain airbag 50 can be smoothly deployed inward of the cabin R even if the reinforcing members 30A, 30B are set on the roof trim side end 20A side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle roof trim.

  The interior of the automobile is equipped with a vehicle roof trim that is attached to the interior side of the roof panel. The vehicle roof trim is provided with a sunroof opening to which a sunshade panel can be opened and closed.

  FIG. 1 is an overall perspective view of a conventional vehicle roof trim as viewed from the body panel side. In the conventional vehicle roof trim 1 shown in FIG. 1, the operator may carry the grip while holding the both end portions 2 of the roof trim 1 during work. A reinforcing member 5 is provided between the roof trim side end portion 2 and the opening peripheral edge portion 4A of the sunroof opening 4 as an opposing rope for preventing breakage of the portion 3 (see, for example, Patent Document 1).

  In another conventional vehicle roof trim, Patent Document 2 and Patent Document 3 disclose a structure corresponding to a curtain airbag that is deployed in a curtain shape along a roof side rail extending in the vehicle front-rear direction. Specifically, in the event of a side collision or vehicle rollover, gas generated from an inflator (gas generator) is detected and injected into the curtain airbag equipped on the roof side rail, and the curtain airbag is installed. Inflate and deploy downward. At this time, the conventional roof trim for a vehicle is pressed by the expansion of the curtain airbag so that the folded curtain airbag is deployed in a curtain shape along the side wall of the vehicle interior in a smooth and stable state. A structure has been proposed in which the roof trim side end is elastically rotated toward the vehicle interior.

JP-A-8-119142 JP 2004-256000 A JP 2005-193856 A

  FIG. 2 is a cross-sectional view of the roof trim side portion taken along line A-A in a state where the conventional vehicle roof trim 1 shown in FIG. 1 is attached to the vehicle body and the curtain airbag is inflated and deployed.

  However, in the conventional vehicle roof trim 1, as shown in FIG. 2, when the folded curtain airbag 6 is inflated and deployed, the roof trim side end portion 2 is directed toward the vehicle interior R. Therefore, the reinforcing member 5 cannot be disposed in the region A of the roof trim side portion 3 from the fulcrum O where the roof trim side end portion 2 rotates to the roof trim side end portion 2. There wasn't. For this reason, since the reinforcing material 5 has no choice but to arrange | position in the area | region B of the roof trim side part 3 except the area | region A of the roof trim side part 3, there existed a problem which a restriction | limiting produced a layout. As a result, since the reinforcement member 5 is manually attached, the attachment position of the reinforcement member 5 may be mistakenly attached to the region A of the roof trim side portion 3, which hinders the deployment of the curtain airbag 6. The problem that occurred.

  Moreover, in the conventional vehicle roof trim shown in Patent Document 2 and Patent Document 3, the roof trim side end portion side is expanded so that the folded curtain airbag can be smoothly deployed to the vehicle interior side. Only an easy structure is employed, and no consideration is given to the reinforcing material required by forming the sunroof opening.

  Therefore, the present invention has been made in view of the above problems, and it is possible to set a reinforcing material without being restricted by the layout, and it is also possible to install a curtain airbag even if a reinforcing material is set on the roof trim side end side. An object of the present invention is to provide a vehicle roof trim that can be smoothly deployed.

  In order to solve the above problems, a vehicle roof trim according to the present invention is a vehicle roof trim comprising a sunroof opening and a reinforcing material that reinforces a roof trim side portion in the vicinity of the sunroof opening, The reinforcing member is disposed on the roof trim side part so as to cover the end side of the roof trim side part, and a portion corresponding to the end side of the roof trim side part is disposed in the vehicle interior when the curtain airbag is inflated. Hinge means that bends toward the head.

  According to the present invention, even if the reinforcing material is arranged so as to cover the end side of the roof trim side portion, the reinforcing material portion corresponding to the end side of the roof trim side portion is the vehicle when the airbag is inflated. Since the hinge means is bent toward the room, the curtain airbag can be smoothly deployed. Thereby, even if the reinforcing material is disposed on the end side of the roof trim side portion, the deployment of the curtain airbag is not hindered, so that the reinforcing material can be easily laid out on the roof trim side portion. For this reason, the reinforcing material can be set on a wide range of roof trim sides without being restricted by the design layout. In addition, the reinforcing material part corresponding to the end side of the roof trim side part holds the reinforcing strength so that it is bent only when the airbag is inflated. However, breakage of the roof trim side portion is prevented.

  The said hinge means consists of a slit or a groove | channel formed along the vehicle front-back direction. According to the present invention, since the hinge means is a slit or a groove formed along the vehicle front-rear direction, the reinforcing material portion corresponding to the end side of the roof trim side portion is arranged along the longitudinal direction of the reinforcing material. Can be folded inward. Thereby, since the curtain airbag can be largely deployed along the vehicle front-rear direction, it is possible to ensure a wide range in which the impact can be absorbed.

  The length of the reinforcing member in the vehicle width direction corresponds to the length from the vicinity of the periphery of the sunroof opening to the end of the roof trim side portion. According to the present invention, since the reinforcing material has a predetermined length, a wide range of roof trim side portions can be reinforced. Thereby, the breakage accident of a roof trim side part can be prevented reliably.

  The reinforcing material is thinner than the roof trim side portion. According to the present invention, since the reinforcing material is thin, when the curtain airbag is inflated, the reinforcing material portion corresponding to the end side of the roof trim side portion can be easily bent by the hinge means. As a result, the curtain airbag can be instantly deployed in the passenger compartment.

  The reinforcing member is disposed on the roof trim side portion so that the hinge means overlaps a thin portion formed on the roof trim side portion. According to the present invention, since the thin portions of the hinge means and the roof trim side portion overlap each other, the reinforcing material portion corresponding to the end side of the roof trim side portion is easily bent toward the vehicle interior side. Thereby, the curtain airbag can be reliably deployed in the vehicle interior.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to set a reinforcing material without being restrict | limited to a layout, even if a reinforcing material is set to the roof trim side edge side, a curtain roof can be deployed smoothly. Trim can be provided.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a vehicle roof trim according to the present invention will be described in detail with reference to the accompanying drawings.

  A vehicle roof trim 100 according to the present embodiment will be described with reference to FIGS. 3 to 6. 3 is an overall perspective view of the vehicle roof trim according to the embodiment of the present invention as viewed from the vehicle body panel side, FIG. 4 is a diagram for explaining a state in which a reinforcing member is attached to the vehicle roof trim shown in FIG. 3, and FIG. 3 is a cross-sectional view of the side of the roof trim in a state in which the vehicle roof trim shown in FIG. 3 is attached to the vehicle body and the curtain airbag is inflated and deployed, and FIG. 6 is a diagram for explaining a modification of the reinforcing material. FIG.

  As shown in FIG. 3, the vehicle roof trim 100 is formed in a size corresponding to the shape of the interior surface of a roof panel (body panel) (not shown), and mounting means (not shown) such as a plurality of hook-and-loop fasteners. Is attached to the vehicle interior side of the roof panel.

  The vehicle roof trim 100 has a foaming resin base material 100A having shape retention so as to beautify the inside of the roof panel, and a decoration function in which the foam resin base material 100A is laminated and integrated on the surface side of the passenger compartment. It is comprised by the laminated molding with the nonwoven fabric skin material 100B. A vehicle roof trim 100 shown in FIG. 3 is obtained by heating and softening a foamed resin base material 100A to a predetermined temperature with a heating device (not shown) such as an infrared heating furnace, and then nonwoven fabric in a cavity of a mold device (not shown). It is formed by press molding integrally with the skin material 100B.

  An outline is demonstrated about the raw material of 100 A of foamed resin base materials, and the nonwoven fabric skin material 100B. The foamed resin base material 100A is laminated and integrated from a glass mat and a foamed resin film that reinforces rigidity on both surfaces of the glass mat, for example, a polypropylene (PP) film mixed with a foaming agent. As the glass mat, there can be used glass fibers and polyolefin resin fibers such as polypropylene resin fibers which are accumulated in a mat shape, or glass fiber mats in which glass fibers are mixed with a polyolefin resin as a binder. A hot melt film (for example, a polyethylene film) as an adhesive medium with the nonwoven fabric skin material 100B is laminated on one surface side of the foamed resin base material 100A.

  Nonwoven fabric skin material 100B can be a polyester fiber nonwoven fabric or a blended nonwoven fabric of polyester fiber and polypropylene fiber, and is colored in a desired color such as gray or beige to ensure good appearance performance. .

Next, details of the vehicle roof trim 100 will be described with reference to FIG.
As shown in FIG. 3, the vehicle roof trim 100 includes a sunroof opening 10 to which a sunshade panel (not shown) can be opened and closed, and a reinforcing material that reinforces the roof trim side portion 20 near the sunroof opening 10. 30A, 30B.

The sunroof opening 10 is largely opened behind the map lamp opening 12 formed in front of the vehicle. A concave sun visor accommodating portion 14 for accommodating a sun visor (not shown) is formed in front of the sun roof opening 10 so as to sandwich the map lamp opening 12 therebetween. In the sun visor accommodating portion 14, Sun visor mounting holes 14A and 14B to which mounting brackets (not shown) of the sun visor are mounted are formed. Further, both roof trim side portions 20 are arranged in the vehicle width direction of the sunroof opening 10, and assist grip mounting holes 16 </ b> A and 16 </ b> B are formed on the front side of each of the roof trim side portions 20. The personal lamp mounting openings 18A and 18B are formed on the rear side.

  The reinforcing members 30A and 30B are plate-shaped members that prevent breakage of the roof trim side portion 20 that occurs when the operator grips the slits 40A and 40B as hinge means. The reinforcing members 30A and 30B are disposed on the roof trim side portion 20 so as to cover the roof trim side end portion 20A side, and are disposed between the assist grip mounting holes 16A and 16B and the personal lamp mounting openings 18A and 18B. ing.

  The dimensions of the reinforcing members 30A and 30B will be described in detail. The lengths of the reinforcing members 30A and 30B in the vehicle width direction are set from the vicinity of the opening peripheral edge portion 10A of the sunroof opening 10 to the roof trim side end portion 20A. ing. Further, the length of the reinforcing members 30A and 30B in the vehicle front-rear direction is longer than the length in the vehicle width direction described above, and the length from the front seat to the rear seat in the vehicle interior is set. The reinforcing members 30A and 30B have a predetermined thickness (for example, 3.0 mm) H1 that is thinner than the thickness H2 of the roof trim side portion 20 (see FIG. 5).

  The slits 40A and 40B are hinge means for bending the reinforcing material portion 34 corresponding to the roof trim side end portion 20A toward the vehicle interior R when the curtain airbag 50 is inflated. The slits 40A and 40B functioning as hinge means are formed on the surfaces of the reinforcing members 30A and 30B along the longitudinal direction of the reinforcing members 30A and 30B. Further, the slits 40A and 40B have a predetermined depth from the surfaces of the reinforcing members 30A and 30B so that the reinforcing member portion 34 is bent toward the vehicle interior side when the curtain airbag 50 is inflated while maintaining the reinforcing strength to some extent. For example, the depth is set to 1.5 to 2.0 mm. When the thin portion (slit) 22 is formed on the roof trim side portion 20, the reinforcing members 30A and 30B are provided on the roof trim side so that the slits 40A and 40B and the thin portion 22 (slit) of the roof trim side portion 20 overlap. It is preferable to arrange in the part 20 (refer FIG. 5).

Next, an outline of a method of forming the reinforcing members 30A and 30B will be described with reference to FIG.
As shown in FIG. 4, when the vehicle roof trim 100 is molded into a product shape in a molding die (not shown) by an injection molding method or a mold press method, the vehicle roof trim 100 has a sunroof opening. The end material D is punched out from the portion 10. Next, the reinforcing members 30A and 30B having a required shape are cut out from the punched end material D. Then, slits 40A and 40B are formed in the cut reinforcing members 30A and 30B along the longitudinal direction of the reinforcing members 30A and 30B by cutting means (not shown). The reinforcing members 30A and 30B in which the slits 40A and 40B are formed are fixed to both roof trim side portions 20 of the vehicle roof trim 100 with an adhesive or the like. The reinforcing members 30A and 30B are preferably pressed before the reinforcing members 30A and 30B having a required shape are cut from the end material D so as to be thinner than the foamed resin base material 100A of the vehicle roof trim 100. Thereby, the reinforcing members 30 </ b> A and 30 </ b> B for preventing the roof trim side portion 20 from being broken are formed on the roof trim side portion 20.

  Referring to FIG. 5 for the state in which the above-described vehicle roof trim 100 is mounted on the vehicle body, the reinforcing member 30A starts from the vicinity of the opening peripheral portion 10A of the sunroof opening 10 so as to reinforce the wide roof trim side portion 20. It arrange | positions at the roof trim side part 20 so that the roof trim side edge part 20A may be covered. At this time, the surface F from the reinforcing material portion 32 where the slit 40 </ b> A is formed to the reinforcing material portion 34 in the reinforcing material 30 </ b> A is arranged in the deployment region A of the curtain airbag 50. That is, when the curtain airbag 50 is inflated and deployed, the surface F of the reinforcing material 30 </ b> A is subjected to pressure due to the expansion of the curtain airbag 50.

  Here, the curtain airbag 50 will be described. The curtain airbag 50 is detected by a sensor (not shown) attached to the vehicle body when a strong impact is applied to the door panel or the like at the time of a side collision of the vehicle or a vehicle rollover. In the rear pillar garnish (not shown), the gas is discharged from an inflator (not shown) as a gas generator, and the curtain airbag 50 folded in the roof side rail 60 extending in the vehicle front-rear direction is curtained downward. And is interposed between the passenger and the door window glass, and protects the passenger's head, chest, and the like from directly colliding with the door window glass.

  Next, the operation of the vehicle roof trim 100 when a side collision accident or the like occurs in the vehicle will be described with reference to FIG. When a side collision occurs, the sensor senses the impact and injects the gas generated from the inflator into the curtain airbag 50 accommodated in the roof side rail 60, and the curtain airbag 50 expands downward. It is supposed to be. As shown in FIG. 5, the surface 30F of the reinforcing member 30A is pressed by the expansion of the curtain airbag 50 being inflated and deployed, so that the reinforcing member portion 34 is elastically operated by the slit 40A functioning as a hinge means. It rotates in the direction of the arrow in FIG. 5 (inner compartment R direction).

  At this time, in the roof trim side portion 20 arranged below the reinforcing material 30A, the roof trim side end portion 20A side is pressed by the curtain airbag 50 via the surface 30F of the reinforcing material 30A, thereby the roof trim side portion. The end 20 </ b> A rotates together with the reinforcing material portion 34 into the vehicle interior R. That is, the reinforcing material portion 34 of the reinforcing material 30A is configured to bend inwardly of the vehicle interior R together with the roof trim side end portion 20A when the curtain airbag 50 is inflated and deployed. Further, since the slit 40A is formed in the longitudinal direction of the reinforcing member 40A, the reinforcing member portion 34 is bent along the longitudinal direction of the reinforcing member 40A. Then, the reinforcing material portion 34 and the roof trim side end portion 20A are bent so as to open in a door shape toward the inside of the passenger compartment R, whereby the curtain airbag 50 is deployed in a curtain shape toward the inner side of the passenger compartment R.

  As described above, the reinforcing material portions 34 of the reinforcing materials 30A and 30B are bent inwardly of the passenger compartment R with the slits 40A and 40B as fulcrums, so that the reinforcing material portions 34 of the reinforcing materials 30A and 30B are deployed in the curtain airbag 50. Even if it arrange | positions at A, the expansion | deployment in the compartment R of the curtain airbag 50 at the time of a side collision etc. will not be prevented. Thereby, at the time of a side collision of the vehicle, the curtain airbag 50 can be deployed into the passenger compartment R in a smooth and stable state.

  In consideration of the deployment performance of the curtain airbag 50, since the slits 40A and 40B as hinge means are formed in the reinforcing members 30A and 30B, from the vicinity of the opening peripheral edge 10A of the sunroof opening 10 to the roof trim side The length in the vehicle width direction up to the end 20A can be set to the reinforcing members 30A and 30B. For this reason, since the reinforcing members 30A and 30B can be set on a wide range of the roof trim side portions 20, the reinforcing members 30A and 30B are not restricted by the design layout. Further, since the reinforcing members 30A and 30B can reinforce the roof trim side portion 20 in a wide range, even when the operator grips the roof trim side end portion 20A during work, the roof trim side portion 20 can be reliably broken. Can be prevented. Further, since the reinforcing material portion 34 holds the reinforcing strength so as to be bent only when the curtain airbag 50 is inflated, the side portion of the roof trim is maintained even if the operator holds the reinforcing material portion 34 during the operation. Twenty breaks are prevented.

  Furthermore, since the reinforcing material portion 34 is bent inward of the vehicle interior R along the length of the reinforcing material 40A, the curtain airbag 50 is curtained toward the front seat and the rear seat in the vehicle interior R. Can be developed into a shape. For this reason, when the curtain airbag 50 is expanded and deployed in the passenger compartment R, the safety of passengers seated in the front seat and the rear seat can be ensured.

  In addition, since the reinforcing members 30A and 30B are thinner than the roof trim side portion 20, when the curtain air bag 50 is pressed on the surface 30F of the reinforcing members 30A and 30B, the reinforcing member portion 34 has the slit 40A, It can be easily bent with 40B as a fulcrum. As a result, when a side collision or the like occurs, the curtain airbag 50 can be instantly deployed to the inside of the passenger compartment R, so that the impact on the passenger can be sufficiently mitigated.

  Further, when the thin portion 22 is formed on the roof trim side portion 20, the roof trim side end portion 20A is easily bent into the vehicle compartment R through the thin portion 22, so that a side collision or the like occurred. In this case, the reinforcing material portion 34 can be reliably bent to the inside of the passenger compartment R without obstructing the roof trim side end portion 20A. Thereby, since the curtain airbag 50 can be reliably deployed in the passenger compartment R, the reliability for the passenger can be further improved.

  Next, a modified example of the reinforcing members 30A and 30B of the vehicle roof trim 100 will be described with reference to FIG. FIG. 6 is a view for explaining a modification of the reinforcing material, and corresponds to FIG. In addition, about the structure same as the above-mentioned, the same code | symbol is attached | subjected on drawing and description is abbreviate | omitted.

  6 has grooves (beads) 70 formed in the same portions as the slits 40A formed in the above-described reinforcing material 30A. The groove portion 70 is a hinge means for bending the reinforcing members 30A and 30B corresponding to the roof trim side end portions 20A and 20B of the roof trim side portions 20A and 20B toward the vehicle interior, similarly to the slit 40A shown in FIG. is there. Note that a thin portion (groove) 22 ′ may be formed on the roof trim side portion 20 in the same portion as the thin portion (slit) 22 shown in FIG. 5. Therefore, the reinforcing material 30 </ b> A ′ can obtain the same effect as that of the reinforcing material 30 described above.

  Further, as a further effect of the reinforcing member 30A ′, the groove portion 70 as a hinge means has a groove-shaped protrusion corresponding to the groove portion 70 in the molding die of the foamed resin base material 100A of the vehicle roof trim 100. By forming, it forms in the same process simultaneously with shaping | molding of the roof trim 100 for vehicles. Therefore, the reinforcing member 30A ′ shown in FIG. 6 can be easily manufactured as compared with the reinforcing member 30A (see FIG. 3) having the slit 40A formed in a separate process from the molding of the vehicle roof trim 100. Can do.

  In the above-described embodiment, the slits 40A, 40B or the groove portions 70 have been described as hinge means, but the present invention is not limited to this, and corresponds to the roof trim side end portions 20A, 20B side of the roof trim side portions 20A, 20B. As long as the reinforcing material portion 34 to be bent is bent into the passenger compartment R, any of them may be used. Further, the slits 40A, 40B or the groove part 70 as the hinge means are formed over the entire length along the longitudinal direction of the reinforcing members 30A (30A ′), 30B, but the slits 40A, 40B or the groove part 70 are part of the length. May be.

  In the above-described embodiment, the pair of reinforcing members 30A and 30B has been described to reinforce the roof trim side portion 20 near the sunroof opening 10 disposed in front of the vehicle, but the present invention is not limited thereto. The roof trim side portion near the sunroof opening formed at the rear of the vehicle may be reinforced, and the vicinity of the roof trim side portion of the sunroof opening formed at both the front and rear of the vehicle. It may be a pair of two or more reinforcing materials that reinforce the structure.

  Furthermore, in the above-described embodiment, the reinforcing members 30A and 30B have a length in the vehicle width direction from the vicinity of the opening peripheral edge portion 10A of the sunroof opening 10 to the roof trim side end portion 20A. Not limited to this, a reinforcing material having a length from the half of the length of the roof trim side portion 20 in the vehicle width direction to the roof trim side end portion 20A may be used.

  In addition, in the above-described embodiment, as an example of a method for forming the reinforcing material, the reinforcing materials 30A and 30B are cut into a required shape from the portion D that becomes the sunroof opening 10 formed by punching the molded vehicle roof trim 100. However, the present invention is not limited to this, and the sunroof opening is punched out so as to leave the reinforcing material at the same time as forming the vehicle roof trim, and the reinforcing material is folded back to the side of the roof trim after forming the vehicle roof trim. A reinforcing material arranged may be used.

  The preferred embodiment of the present invention has been described in detail above, but the vehicle roof trim according to the present invention is not limited to the above-described embodiment, and the scope of the gist of the present invention described in the claims. Various modifications and changes are possible.

It is the whole vehicle perspective view which looked at the roof trim for vehicles from the body panel side. FIG. 2 is a cross-sectional view taken along line AA of the side portion of the roof trim in a state where the conventional vehicle roof trim 1 shown in FIG. 1 is attached to the vehicle body and the curtain airbag is inflated and deployed. It is the whole perspective view which looked at the roof trim for vehicles by the embodiment of the present invention from the body panel side. It is a figure explaining the state which attaches a reinforcing material to the roof trim for vehicles by embodiment of this invention. It is a BB sectional view of the roof trim side part in the state where the vehicle roof trim according to the embodiment of the present invention is attached to the vehicle body and the curtain airbag is inflated and deployed. It is a figure explaining the modification of a reinforcing material, and is a figure corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Vehicle roof trim 10 Sunroof opening 10A Opening edge part 12 Map lamp opening 14 Sunvisor accommodating part 14A, 14B Sunvisor attachment hole 16A, 16B Assist grip attachment hole 18A, 18B Personal lamp attachment opening 20 Roof trim side part 20A Roof Trim side end portion 22 Thin portion 30A, 30B Reinforcing material 30F Reinforcing material surface 40A, 40B Slit 50 Curtain airbag 60 Roof side rail 70 Groove A A region where curtain airbag is inflated and deployed R

Claims (3)

A vehicle roof trim comprising a sunroof opening and a reinforcing material that reinforces a roof trim side portion in the vicinity of the sunroof opening,
The reinforcing member is disposed on the roof trim side part so as to cover the end side of the roof trim side part, and a portion corresponding to the end side of the roof trim side part when the curtain airbag is inflated. A vehicle roof trim characterized by having hinge means for bending into a room. 2. The vehicle roof trim according to claim 1, wherein the hinge means comprises a slit or a groove formed along the vehicle front-rear direction. The length in the vehicle width direction of the reinforcing material corresponds to the length from the vicinity of the peripheral edge of the sunroof opening to the end of the roof trim side part. The vehicle roof trim described.