JP5020007B2 - Interior materials for vehicles - Google Patents

Description

  The present invention relates to an interior member for a vehicle such as a pillar garnish mounted on a pillar portion of a vehicle body.

A curtain airbag device has been developed that deploys an airbag between a vehicle body side wall and an occupant when a vehicle collides.
This curtain airbag device is housed from the front pillar to the roof side rail and then to the rear pillar when the airbag is folded. When an impact is input, the airbag expands by blowing out high-pressure gas from the inflator. It is supposed to be. The folded airbag is covered with pillar garnish and roof lining on the inside of the passenger compartment, and when an impact is input, the pillar garnish and a part of the roof line are pushed open by the thrust of high-pressure gas. ing.

  By the way, the airbag of the curtain airbag device is usually arranged in a range that spans the entire area of the roof side rail portion and each part of the front pillar portion and the rear pillar portion. A part of the extending direction is partially pushed open. For this reason, when the airbag is deployed at the pillar portion, the airbag to be deployed is subjected to great resistance by the pillar garnish, making it difficult to control the deployment posture of the airbag.

For this reason, a pillar garnish structure capable of coping with this is devised in which a thin rupture induction part is formed in the pillar garnish and the pillar garnish is broken at the rupture induction part when the airbag is deployed. (See Patent Document 1).
JP 2000-335358 A

  This structure of the pillar garnish suppresses an increase in unnecessary deployment resistance of the airbag by forming a thin rupture induction part in the pillar garnish in advance, but it is difficult to manufacture the pillar garnish, which is difficult to manufacture. There is a concern that it will lead to a surge in the price.

For this reason, at present, interior members such as pillar garnishes are constituted by a plurality of members with end edges butted so that the end edges of one member are opened from the vicinity of the boundary when the airbag is deployed. I am considering that.
However, if a structure in which a plurality of interior members are attached to each other at the edge is adopted, it is difficult to increase the accuracy of the interior members, and the entire area of the edge of one interior member can be extended to the edge of the other interior member. When it is clamped and fixed, it is easy to obtain the building accuracy, but it becomes difficult to set the pinch and fix that opens as desired when the airbag is deployed and does not easily come off when assembled.

  Therefore, the present invention is intended to provide an interior member for a vehicle that can improve the building accuracy without requiring complicated settings.

The invention according to claim 1, which solves the above problem, includes an interior material body (for example, a garnish body 7 in an embodiment described later) having a notched portion (for example, a notched portion 6 in an embodiment described later), An auxiliary interior material (for example, a garnish lid 8 in an embodiment described later) that closes the notch, and a coupling member (for example, a garnish frame 9 in an embodiment described later) that connects the interior material body and the auxiliary interior material. The coupling member is attached to the interior material body, and a boundary portion between the auxiliary interior material and the interior material body (for example, a lower side boundary portion a in an embodiment described later). in the vicinity of a clamping coupling portion for holding the edge of the auxiliary interior material between the edge of the interior material body (e.g., stop flange 37 in the embodiment), the clamping An auxiliary coupling part (for example, an auxiliary clamping piece 38 and a screw in an embodiment described later) that is disposed at a position farther from the coupling part than the coupling part and couples the auxiliary interior material and the interior material body. It is characterized by.
As a result, the vicinity of the boundary portion of the auxiliary interior material is sandwiched between the edge of the interior material body and the sandwiched coupling portion, and the portion of the auxiliary interior material that is further away from the boundary portion than the sandwiched coupling portion is supplementary coupled. It is combined with the interior material body by the part. In this case, the sandwiched coupling portion and the auxiliary coupling portion have different separation distances from the boundary portion. Therefore, the constraint release characteristics (separation characteristics) of the auxiliary interior material with respect to the input of external force are different between the sandwiched coupling portion and the auxiliary coupling portion. .

According to a second aspect of the present invention, in the vehicle interior material according to the first aspect, when the predetermined load is applied to the auxiliary interior material, the sandwiched joint portion has the boundary between the auxiliary interior material and the interior material body. It is characterized by being separable in the vicinity of the part.
As a result, when a predetermined load is input to the sandwiched joint portion, the auxiliary interior material is separated in the vicinity of the boundary portion with respect to the interior material main body, and the auxiliary interior material is easily released stably by the input of more load. Become.

According to a third aspect of the present invention, in the vehicle interior material according to the second aspect, the auxiliary coupling portion is provided only when a second predetermined load larger than the predetermined load is applied to the auxiliary interior material. The auxiliary interior material and the interior material body are separable.
Thereby, for example, by setting the second predetermined load to be larger than the load acting at the time of assembling or transporting before assembling, the auxiliary interior material and the interior material main body are separated at the time of assembling or transporting. It can be avoided.

  According to the invention described in claim 1, since the separation distance to the boundary portion of the sandwiched coupling portion and the auxiliary coupling portion is different, while securing the installation accuracy of the auxiliary interior material and the interior material body by the sandwiched coupling portion, The constraint release characteristics of the auxiliary interior material with respect to the input of external force can be easily set in a plurality of stages.

  According to the invention described in claim 2, when the predetermined load is applied to the auxiliary interior material, the sandwiching and coupling portion is set so that the auxiliary interior material and the interior material main body can be separated in the vicinity of the boundary portion. Therefore, the release of the auxiliary interior material when a load greater than or equal to a predetermined load acts on the auxiliary interior material can be stabilized.

  According to the third aspect of the invention, the auxiliary coupling portion is arranged so that the auxiliary interior material and the interior material body can be separated only when a second predetermined load larger than the predetermined load is applied to the auxiliary interior material. Because it is set, for example, the separation of the auxiliary interior material and the interior material body during assembly and transportation is avoided, and the auxiliary interior material is reliably opened when the airbag is deployed. Can get to.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, directions such as up and down, left and right, and front and rear are assumed to be based on the vehicle.
FIG. 1 is a side view of a coupe type vehicle. In FIG. 1, reference numeral 1 denotes a rear pillar (pillar portion) that connects a roof portion 2 of the vehicle and a side surface on the rear side of the vehicle body. Since this vehicle is a coupe type vehicle, the rear pillar 1 is gently inclined downward from the roof portion 2 toward the rear side of the vehicle body.
A pillar garnish 3 and a roof lining 4 which are interior materials are respectively attached to the inner sides of the rear pillar 1 and the roof portion 2. The airbag 5 (see the sectional view of FIG. 7) of the curtain airbag device is attached in a folded state from the side end portion (roof side rail portion) of the roof portion 2 to a part of the rear pillar 1. 5 is covered with the roof lining 4 and the pillar garnish 3 from the vehicle interior side.

2 and 5 are a perspective view and an exploded perspective view of the pillar garnish 3 as viewed from the outside of the passenger compartment, and FIGS. 3 and 4 illustrate the lower edge region of the rear side of the roof lining 4 and the pillar garnish 3. They are the perspective view and disassembled perspective view which looked at the connection part from the inner side direction of the vehicle interior.
As shown in these drawings, the pillar garnish 3 includes a garnish main body 7 (interior material main body) having a substantially L-shaped cutout portion 6 in an upper edge region on the front side, and a substantially closed shape for closing the cutout portion 6. A rectangular garnish lid 8 (auxiliary interior material) and a substantially U-shaped garnish frame 9 (coupling member) which is disposed on the back side of the garnish lid 8 and reinforces the garnish lid 8 and couples the garnish lid 8 and the garnish body. ) And. The lower edge region on the rear side of the roof lining 4 is joined to the front end portion of the garnish lid 8 and is disposed in the notch 6 of the garnish body 7 together with the garnish lid 8. The lower edges of the roof lining 4 and the garnish lid 8 are located below the storage portion of the airbag 5 and are pushed open by the thrust of the airbag 5 when the airbag 5 is deployed (opens the deployment opening of the airbag 5). It has become. The roof lining 4 and the garnish lid 8 are both formed mainly of a foamed resin material that is relatively soft and easily deformable. Further, the garnish main body 7 is locked and fixed to the rear pillar 1 or a trim member (not shown) on the inside of the vehicle by a clip 10 or a locking claw 11 or the like.

  The garnish frame 9 supports an upper region of the garnish lid 8 (in this example, a region that bulges toward the inside of the vehicle slightly offset from the center position in the vertical direction) substantially along the longitudinal direction of the lid 8. The upper support frame member 9A (upper support portion) and the garnish lid attached to the lower end of the notched portion 6 of the garnish body 7 along the lower side boundary portion a between the garnish lid 8 and the garnish body 7 8 and a lower locking frame member 9B (boundary support portion) that locks the lower edge portion, and these are integrally coupled by screws or the like. These frame members 9A and 9B are formed of a hard resin material.

  The upper support frame member 9A includes a longitudinally extending portion 12 extending substantially straight along the longitudinal direction from the vicinity of the front end side of the garnish lid 8 to the rear end portion, and a garnish lid from the rear end of the longitudinally extending portion 12. 8 and the garnish main body 7 is provided with a curved extension 13 that curves along the rear boundary b, and the lower end of the curved extension 13 is coupled to the rear end of the lower locking frame member 9B.

  By the way, a substantially rectangular tongue piece portion 14 is integrally formed at the rear end portion of the garnish lid 8 so as to go around the notch portion 6 to the back side of the garnish body 7. Two front and rear positions on the edge side are integrally coupled to the garnish main body 7 and the curved extension portion 13 of the upper support frame member 9A by screws 15. The fixing portion by the screw 15 constitutes a fixing portion that fixes the garnish main body 7, the garnish lid 8, and the garnish frame 9 so that they cannot be separated from each other. Further, a boss portion 17 for fixing the vehicle body protrudes from the rear surface side of the garnish main body 7 in the vicinity of the fixing portion, and the boss portion 17 is fixed to the rear pillar 1 by the clip 10. Therefore, the rear end side of the upper region of the garnish lid 8 is fixed to the rear pillar 1 via the screw 15 and the clip 10, and these screws 15 and the clip 10 serve as a vehicle body fixing portion on the rear end side of the upper region of the garnish lid 8. It is composed.

  In the lower edge of the tongue piece 14 (the corner area of the terminal along the extending direction of the lower side boundary portion a of the garnish body 7), a long hole 18 is formed along the extending direction of the lower side boundary portion a. The lower edge of the curved extending portion 13 on the garnish frame 9 side is coupled to the back surface of the garnish body 7 by a bolt 19 that passes through the long hole 18. And the lower edge of the tongue piece part 14 is arrange | positioned between the fastening parts by the volt | bolt 19 of the garnish frame 9 and the garnish main body 7, and when the long hole 18 part slides with respect to the volt | bolt 19, the lower side with respect to the garnish main body 7 Relative displacement along the boundary a is allowed. Therefore, the lower edge of the tongue piece portion 14 is allowed to be displaced relative to the garnish body 7 in the direction along the lower boundary a by the bolts 19 and the long holes 18 and is restricted from moving in other directions. ing. The joint portion by the bolt 19 and the long hole 18 constitutes a main body joint portion in the lower region of the garnish lid 8.

  A substantially rectangular mounting hole 20 is formed in the vicinity of the front end side in the upper region of the garnish lid 8. The upper support frame member 9 </ b> A of the garnish frame 9 is formed with a substantially rectangular through hole 21 corresponding to the position where the attachment hole 20 of the garnish lid 8 is formed. A common clip 22 as a locking member is continuously inserted into the mounting hole 20 and the through hole 21 from the inside of the vehicle, whereby the upper region of the garnish lid 8 is coupled to the upper support frame member 9A in a superposed state. Has been. The joint portion by the clip 22 constitutes a vehicle body fixing portion on the front end side of the upper region of the garnish lid 8.

  As shown in FIG. 4, the clip 22 includes a metal clip main body 23 and a resin clip cap 24 (main body support member) attached to the clip main body 23 from the inside of the vehicle. The clip main body 23 is mainly used. The garnish lid 8 and the garnish frame 9 are coupled to a fixing bracket 25 on the rear pillar 1 side (a fixing member on the vehicle body side), and a clip cap 24 finally covers the clip main body 23 from the inside of the vehicle.

  By the way, in the lower edge region on the rear side of the roof lining 4, as shown in FIGS. 3 and 4, a substantially rectangular connection flange 26 extending so as to wrap around the back side of the front end portion of the garnish lid 8 extends. A substantially rectangular through hole 27 is formed in the connection flange 26. Further, on the back surface of the connection flange 26, a shock absorbing member 28 is interposed between the back surface of the roof lining 4 and the rear pillar 1 to reduce interference shock from the vehicle interior side of the roof lining 4 (see FIG. 4). ) Is installed. The shock absorbing member 28 is formed of a relatively hard non-foamed resin material, and a similar through hole 30 is formed at a position corresponding to the through hole 27 of the connection flange 26.

  The clip body 23 has an upper flange 31a and a lower flange 31b that are superposed on the opening edge inside the mounting hole 20 of the garnish lid 8, and has a substantially U-shaped cross section in the insertion axis direction from the roots of both flanges 31a and 31b. As shown in the sectional view of FIG. 8, the leg 32 is fitted into the mounting hole 20 of the garnish lid 8 and the through-hole 21 of the garnish frame 9, and then the leg 32 on the vehicle body side is provided. The locking bracket 25 is locked in the locking hole 33. At this time, the connection flange 26 and the shock absorbing member 28 are superposed on the back surface of the upper support frame 9A by aligning the through holes 27 and 30 with the through holes 21 of the upper support frame member 9A, and the leg portions 32 of the clip main body 23. Is fixed to the fixing bracket 25 so as to be sandwiched and fixed between the upper support frame member 9 </ b> A and the fixing bracket 25. The clip cap 24 includes a flat cover flange 34 that covers the upper flange 31a and the lower flange 31b of the clip main body 23 from the inside of the vehicle, and a leg portion of the clip main body 23 that extends to the center of the cover flange 34 in the final region. 32 and a support shaft 35 that is press-fitted and fixed inside. In addition, since the leg part 32 of the clip main body 23 has a structure in which a pair of opposing walls 32a and 32a having substantially the same width extend in parallel in the axial direction, the outer side surface and the side surface of these opposing walls 32a are substantially rectangular. It functions as a support surface that comes into contact with the inner surfaces of the mounting holes 20 and the through holes 21, 27, 30.

Further, as shown in FIG. 2 , the lower locking frame member 9B of the garnish frame 9 has a plurality of portions spaced apart in the longitudinal direction along the lower end of the notch 6 on the back side of the garnish body 7 by screws 36. The bottom edge of the garnish lid 8 is connected to the upper edge of the lower locking frame member 9B between the edge of the garnish body 7 and the edge of the garnish body 7, as shown in the sectional views of FIGS. A locking flange 37 (clamping coupling portion) is formed that sandwiches (in the vicinity of the lower boundary portion a) and has a distal end bent in a substantially U shape. The lower end of the garnish lid 8 is inserted into the back side of the edge facing the notch portion 6 of the garnish body 7 over almost the entire longitudinal direction, and the edge and the locking flange 37 of the lower locking frame member 9B are inserted. It is pinched and fixed.

FIG. 9 is an exploded perspective view of the engagement portion on the lower end side of the garnish body 7 and the garnish lid 8 as viewed from the inside of the vehicle compartment.
As shown in FIGS. 9, 5, and 7, an auxiliary clamping piece 38 (auxiliary coupling portion) that extends toward the lower end is provided at a portion near the front end of the lower edge of the garnish lid 8. It is extended. The auxiliary clamping piece 38 is formed with a substantially U-shaped slit 39 that opens toward the distal end side. Further, a boss portion 40 protrudes from the notch portion 6 (lower side boundary portion a) in the width direction (downward side) at the edge on the back surface side of the garnish body 7. A through hole 41 into which the distal end portion of the boss portion 40 is fitted is formed in a portion corresponding to the boss portion 40 of the frame member 9B. When the lower edge of the garnish lid 8 is locked in the inserted state between the locking flange 37 and the edge of the garnish body 7, the slit 39 of the auxiliary clamping piece 38 is engaged with the outer periphery of the boss portion 40. At the same time, a screw 42 (auxiliary coupling portion) is coupled to the boss portion 40 penetrating the through hole 41 of the lower locking frame member 9B. Thus, the auxiliary clamping piece 38 is clamped and fixed between the lower locking frame member 9B and the garnish body 7.

  Here, the garnish frame 9 reinforces the upper region of the garnish lid 8 with the upper support frame member 9A as described above, and the lower edge of the garnish lid 8 is arranged in the vicinity of the lower boundary portion a and the lower boundary portion a. The auxiliary sandwiching piece 38 that is spaced from the upper part is sandwiched in two steps, but is located above the substantially U-shaped space surrounded by the upper support frame member 9A and the lower locking frame member 9B. The folded airbag 5 is arranged as shown in FIG. When the airbag 5 is deployed, the lower edge of the garnish lid 8 by the garnish main body 7 and the lower locking frame member 9B is released by the thrust of the airbag 5 that is about to jump downward, and the garnish lid 8 The lower edge is pushed open toward the inside of the vehicle as shown by the chain line in FIG. The locking load on the auxiliary clamping piece 38 of the garnish lid 8 is set larger than the locking load on the locking flange 37. Specifically, the latching load at the latching flange 37 is set to a load that acts when the garnish lid 8 is assembled to the vehicle body or at the time of conveyance before the assembly, or a load smaller than that. The locking load on the piece 38 is set to be larger than the locking load on the locking flange 37 and smaller than the load acting when the airbag 5 is deployed.

  In the pillar garnish 3 described above, the garnish main body 7, the garnish lid 8, and the garnish frame 9 are configured as separate members, but these three members are assembled in advance before being assembled to the vehicle body. Then, the pillar garnish 3 assembled in advance in this way is conveyed as it is to the vehicle body assembly position, and is assembled to the vehicle body together with other interior members such as the roof lining 4 by a clip or the like.

  When the airbag 5 is actually deployed, when the airbag 5 presses the lower edge of the garnish lid 8 from the inside, the lower edge of the garnish lid 8 is detached from the sandwiched portion between the garnish body 7 and the lower locking frame member 9B. The lower edge of the garnish lid 8 is pushed open to the inside of the vehicle centering on a hinge fulcrum I (see FIG. 3) that connects the coupling portion by the clip 22 and the coupling portion by the bolt 19. Is relatively displaced with respect to the bolt 19 at the portion of the long hole 18 and is largely pulled out to the inside of the vehicle along the lower boundary portion a. For this reason, the garnish lid 8 smoothly and largely opens the deployment opening of the airbag 5 without receiving a large restraining force on the rear end side.

  In this pillar garnish 3, a substantially U-shaped garnish frame 9 is arranged on the back side of the garnish lid 8, and an upper region of the garnish lid 8 is formed by clips 10 and 22 via an upper support frame member 9 </ b> A of the garnish frame 9. While being fixed to the rear pillar 1, the lower edge portion of the garnish lid 8 is locked to the garnish body 7 via the lower locking frame member 9 B of the garnish frame 9, and the tongue piece 14 at the rear end of the garnish lid 8 is further fixed. The lower end is coupled to the garnish body 7 by a long hole 18 and a bolt 19 so as to be relatively displaceable along the extending direction of the lower boundary portion a. It can be reliably maintained, and the handleability does not deteriorate.

  In the pillar garnish 3, the upper region of the garnish lid 8 is reinforced by the upper support frame member 9A of the garnish frame 9, and the lower locking frame member 9B of the garnish frame 9 fixed to the garnish body 7 is used. Since the lower edge of the garnish lid 8 is clamped and fixed, the rigidity of the upper region of the garnish lid 8 can be increased and the lower region can be held with tension, and the lower region of the garnish lid 8 and the garnish body The building accuracy between 7 can be increased.

  In the pillar garnish 3, the lower edge of the garnish lid 8 sandwiches the locking flange 37 that locks the vicinity of the lower boundary portion a and the auxiliary clamping piece 38 that is located away from the lower boundary portion a. Since the clamping part is clamped in two steps, the accuracy of installing the lower edge of the garnish lid 8 on the garnish body 7 is increased, and the lower edge of the garnish lid 8 is surely secured when the airbag 5 is deployed. Can be easily set to open.

  In particular, in this embodiment, the locking load at the locking flange 37 is set to a load that acts at the time of assembling or transporting, or a load smaller than that, and is applied to the auxiliary clamping piece 38 of the garnish lid 8. Since the latching load is set to be larger than the latching load at the latching flange 37, the lower edge of the garnish lid 8 is prevented from being completely separated when the garnish lid 8 is assembled or transported. The lower edge of the garnish lid 8 can be reliably opened at the time of unfolding 5. Even if the lower edge of the garnish lid 8 may come off the locking flange 37 during assembly or transportation, the auxiliary clamping piece 38 is fixed between the lower locking frame member 9B and the garnish main body 7 by screws 42 at this time. Therefore, the lower edge of the garnish lid 8 can be easily returned to the original clamping state thereafter.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

The side view of the vehicle which shows one Embodiment of this invention. The rear view which showed the same embodiment and looked at the interior material arrange | positioned at the H part of FIG. 1 from the vehicle outer side. The front view which looked at the interior material which shows the embodiment from the vehicle inside. The disassembled perspective view which looked at the interior material which shows the embodiment from the vehicle inside. The disassembled perspective view which looked at the interior material which shows the embodiment from the vehicle outer side. Sectional drawing corresponding to the AA cross section of FIG. 2 which shows the same embodiment. Sectional drawing corresponding to the BB cross section of FIG. 2 which shows the same embodiment. Sectional drawing corresponding to CC cross section of FIG. 2 which shows the same embodiment. The disassembled perspective view which looked at the interior material which shows the embodiment from the vehicle inside.

Explanation of symbols

6 ... Notch 7 ... Garnish body (interior material body)
8 ... Garnish lid (auxiliary interior material)
9 ... Garnish frame (joining member)
37 ... Locking flange (clamping joint)
38 ... Auxiliary clamping piece (auxiliary coupling part)
a ... Lower side boundary

Claims (3)

An interior material body having a notch,
An auxiliary interior material that closes the notch,
A vehicle interior material comprising a coupling member for coupling the interior material body and the auxiliary interior material,
The coupling member is
A sandwiching and coupling part that is attached to the interior material body and sandwiches the edge of the auxiliary interior material between the edge of the interior material body in the vicinity of the boundary between the auxiliary interior material and the interior material body;
An interior material for a vehicle, comprising an auxiliary coupling portion that is disposed at a position farther from the boundary portion than the sandwiching coupling portion and couples the auxiliary interior material and the interior material body.   2. The sandwiched and coupled portion according to claim 1, wherein the auxiliary interior material and the interior material main body are separable in the vicinity of the boundary portion when a predetermined load is applied to the auxiliary interior material. Vehicle interior materials.   The auxiliary coupling portion is configured such that the auxiliary interior material and the interior material main body can be separated only when a second predetermined load larger than the predetermined load is applied to the auxiliary interior material. Item 3. A vehicle interior material according to Item 2.

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