JP2013248959A - Trunk lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the rigidity of a vehicle body rear part of a trunk lid without degrading the designability while ensuring the function of absorbing the impact load during a rear-end collision of an automobile.SOLUTION: A trunk lid 5 includes a resin-made rear-side reinforcing part 59, which has a plurality of vertical wall parts 55 integrally erected with each other with their plate surfaces thereof being opposite to each other in the vehicle width direction substantially in the middle of the vehicle width direction of a vehicle body rear part on a back side of a rectangular panel part 7a of a lid body part 7, and a connection wall part 57 for integrally bridging fore edges of the vertical wall parts 55 with each other, while base ends of the vehicle body front side edges of each vertical wall part 55 are located on a substantially straight line L along the vehicle width direction. In a rear end collision of an automobile, the lid body part 7 is bent substantially in a V-shape with a base end of the vehicle body front end edge of each vertical wall part 55 being a starting point.

Description

  The present invention relates to a trunk lid that opens and closes a trunk room opening of an automobile in a vertical direction.

  Patent Document 1 discloses a trunk lid provided with a panel-shaped resin lid main body. In this trunk lid, a plurality of reinforcing ribs are provided on the rear surface of the lid main body to ensure rigidity, and notches are formed in the plurality of reinforcing ribs on a substantially straight line along the vehicle width direction. Therefore, it is easy to crash at the time of rear-end collision of the automobile so that the impact load can be absorbed, and the trunk lid is prevented from jumping into the passenger compartment.

Japanese Utility Model Publication No. 63-102578

  By the way, in general, the rear part of the trunk lid is subjected to a load in accordance with the opening / closing operation, and therefore, its rigidity is required to be improved.

  However, in Patent Document 1, if the reinforcing rib is increased or thickened in order to improve the rigidity of the rear part of the trunk lid, there is a possibility that sink or warp may occur in the lid main body, thereby deteriorating the design of the trunk lid.

  The present invention has been made in view of the above points, and the object of the present invention is to ensure the function of absorbing an impact load at the time of rear-end collision of an automobile and to prevent the design of the trunk lid from deteriorating. It is to increase the rigidity of the.

  In order to achieve the above-mentioned object, the present invention has a plurality of standing wall portions erected integrally with a gap in the vehicle width direction at the rear of the vehicle body on the back side of the lid main body portion, and the leading edges of these standing wall portions are connected to the connecting wall portion. It is characterized by being bridged together.

  Specifically, the present invention includes a panel-shaped resin lid main body, and the trunk room opening can be opened and closed vertically by a pair of hinges at both ends in the vehicle width direction at the front end of the trunk room opening at the top of the vehicle body. The following solutions were taken for trunk lids connected to

  That is, the invention according to claim 1 is a plurality of standing wall portions that are integrally erected with the plate surfaces facing each other in the vehicle width direction in the middle of the rear side of the vehicle body on the back side of the main surface of the lid main body portion. And a connecting wall portion integrally bridging the leading edges of these standing wall portions, and the base end of the vehicle body front side edge of at least one pair of the standing wall portions of the plurality of standing wall portions is substantially along the vehicle width direction. A rear reinforcement portion made of resin positioned on a straight line, and at the time of rear collision of the vehicle, the lid main body portion has a base end of a vehicle body front side edge positioned on a substantially straight line along the vehicle width direction of each of the standing wall portions As a starting point, it bends in a substantially square shape.

  According to a second aspect of the present invention, in the trunk lid according to the first aspect, the vehicle body front side edge of the standing wall portion is inclined upward as it goes from the front end to the base end in the lid closed state. And

  According to a third aspect of the present invention, in the trunk lid according to the first or second aspect, at least one of the plurality of standing wall portions is provided on the vehicle body front side of the rear reinforcing portion on the back side of the main surface of the lid main body portion. A front-side reinforcing portion that is integrally connected to one vehicle body front-side edge and extends in the vehicle width direction is projected.

  According to a fourth aspect of the present invention, in the trunk lid according to any one of the first to third aspects, a lock means for holding a lid closed state is attached to the connecting wall portion of the rear reinforcing portion. It is characterized by being.

  According to the first aspect of the present invention, the rear reinforcing portion forms a closed cross section with the lid main body portion at the rear portion of the trunk lid body, so that the rigidity of the rear portion of the trunk lid body is increased and its deformation or breakage occurs. Can be prevented. Further, since the rear reinforcing portion is connected only at the lid main body portion and the standing wall portion, sink marks and the like due to the thick reinforcing ribs do not occur, and the design of the trunk lid is improved.

  Furthermore, since the lid main body part is bent into a substantially U shape starting from a base line of the front end edge of the vehicle body of the plurality of standing wall parts, that is, a substantially straight line along the vehicle width direction at the time of the rear collision of the automobile, the impact load is absorbed. As a result, the trunk lid is prevented from jumping into the passenger compartment and the impact on the passenger is reduced.

  According to the second aspect of the present invention, since the connecting wall portion is not formed at the vehicle body front side edge of the standing wall portion at the time of the rear collision of the automobile, the vehicle body front side edge of the standing wall portion is bent before the lid main body portion is bent. Bends and absorbs the impact load, so that the impact applied to the occupant can be further reduced.

  According to the third aspect of the present invention, the vehicle body front portion of the trunk lid in which the base end of the vehicle body front side edge of the standing wall portion, that is, the starting point of the bending at the time of the rear collision of the automobile, is increased in rigidity by the front reinforcing portion. Since the rigidity of the starting point relative to the front and rear sides of the trunk lid is relatively low, the misalignment of the starting point of the bending occurs. Hateful.

  According to the fourth aspect of the present invention, since the locking means is provided on the connecting wall portion of the rear reinforcing portion that increases the rigidity of the rear portion of the trunk lid, when the trunk lid is closed, the locking means on the vehicle body side is locked. Even if a reaction force due to contact with the portion acts on the rear reinforcing portion, the lid main body portion does not bend greatly, and it is possible to prevent the occurrence of poor engagement between them.

It is the perspective view which looked at the trunk lid concerning the embodiment of the present invention from the front side. It is the perspective view which looked at the trunk lid concerning the embodiment of the present invention from the back side. It is sectional drawing equivalent to the AA line of FIG. FIG. 3 is a cross-sectional view corresponding to the line BB in FIG. 2.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a trunk lid 5 according to an embodiment of the present invention that can open and close a trunk room opening 3 that opens above a vehicle body 1 of an automobile in a vertical direction. The trunk lid 5 is integrally formed of a fiber reinforced resin material such as carbon fiber reinforced polypropylene (PPCF), glass fiber reinforced polypropylene (PPGF), or SMC (Sheet Molding Compound).

  The trunk lid 5 includes a panel-like lid main body portion 7 that covers the trunk room opening 3 when the lid is closed. The lid body 7 includes a rectangular panel portion 7a extending slightly inclined downward toward the rear of the vehicle body and a large inclination downward from the rear end edge of the rectangular panel portion 7a to gradually narrow the width. However, the left and right symmetrical trapezoidal panel portions 7b that are integrally formed are formed in a substantially cross-sectional shape when viewed from the side, and the rectangular panel portion 7a constitutes the main surface of the lid main body portion 7.

  On the back side of the rectangular panel portion 7 a of the lid main body portion 7, an outer peripheral rib 9 that extends along the entire outer peripheral edge excluding the center in the vehicle width direction on the rear side of the vehicle body is integrally provided upright. In the vicinity of both ends in the vehicle width direction of the outer peripheral rib 9 on the rear side of the vehicle body, a bulging portion 11 that bulges in a substantially anti-U shape in plan view toward the rear of the vehicle body is formed. Further, on the back side of the rectangular panel portion 7a of the lid main body portion 7, the outer peripheral rib 9 is spaced apart from the outer peripheral rib 9 on both outer sides in the vehicle width direction at the front end of the vehicle body, and the plate surface is directed in the vehicle width direction. A pair of side wall portions 13 are erected integrally.

  An annular peripheral wall portion 15 that is spaced apart from the lid main body portion 7 substantially parallel to the front end edge of the outer peripheral rib 9 extends integrally inward or outward. The front side of the vehicle body and both sides in the vehicle width direction of the peripheral wall 15 extend toward the outside of the outer peripheral rib 9, while the rear side of the vehicle body of the peripheral wall 15 extends toward the inner side of the outer peripheral rib 9. It is installed. Both ends in the vehicle width direction at the front end of the vehicle body of the peripheral wall portion 15 project to the both outer sides in the vehicle width direction from the rear side, and are formed thicker than the peripheral wall portion 15 on the inner side in the vehicle width direction. ) And the overhanging portions 17 are formed. The vehicle width direction outer side edge of each of the overhanging parts 17 (extending edge edges on both sides in the vehicle width direction of the front end of the vehicle body of the peripheral wall part 15) are integrally connected to the front end edge of the side wall part 13. A metal insert bracket 23 in which the heads of a pair of bolts 21 are welded is embedded in each overhang portion 17 by insert molding, and the shaft portion of each bolt 21 is stretched with a space in the longitudinal direction of the vehicle body. It protrudes from the rear surface of the protruding portion 17. By inserting the shaft portions of the bolts 21 into the bolt insertion holes 27 of the hinges 25 and screwing the nuts 29 to the front end portions of the shaft portions, the trunk lid 5 is attached to both ends of the trunk room opening 3 at the front end of the vehicle body in the vehicle width direction. The trunk room opening 3 is connected by a pair of hinges 25 so as to be opened and closed in the vertical direction.

  On the other hand, at the rear end edge of the peripheral wall portion 15 at the non-standing portion of the outer peripheral rib 9 on the rear side of the vehicle body, a rear extension wall portion 35 is integrally extended rearward over the entire length. Three through holes 37 having a rectangular shape in plan view are formed in the rear extension wall portion 35 at intervals in the vehicle width direction. The extending end edge (rear end edge) of the rear side extending wall portion 35 is integrally connected to the trapezoidal panel portion 7b from the back side. Further, a front extension wall 39 is integrally extended toward the front in the middle in the vehicle width direction of the front end edge of the peripheral wall 15 at the non-standing portion of the outer peripheral rib 9 on the rear side of the vehicle body. A pair of through holes 41 are formed in the front extension wall portion 39, and the front extension wall portions 39 around each of the through holes 41 are sandwiched by clip nuts 43, and the plate 45 is inserted into the clip nut 43 and the through holes 41. Are fastened from the back side (anti-lid body portion 7 side) by bolts 47. The plate 45 is welded with a striker 49 serving as a locking means that fits into a latch mechanism (not shown) attached to the vehicle body 1 and holds the lid closed. That is, the striker 49 is attached to the front extension wall portion 39 via the plate 45 and the clip nut 43. Further, as shown in FIG. 2, mounting holes 51 for buffer rubber (not shown) are formed in the peripheral wall portion 15 surrounded by the bulging portion 11.

  The surface of the peripheral wall portion 15 on the side opposite to the lid main body portion 7 is in contact with the weather strip 53 provided annularly around the periphery of the trunk room opening 3 in the lid closed state over the entire circumference.

  In the middle of the rear side of the vehicle body in the vehicle width direction on the back side of the rectangular panel portion 7a, a pair of standing wall portions 55 are erected integrally in parallel with a distance from each other with the plate surfaces facing each other in the vehicle width direction. The leading edges of the standing wall portions 55 are formed by the vehicle width direction center portion of the peripheral wall portion 15 at the non-standing portion of the outer peripheral rib 9, the vehicle width direction center portion of the rear side extension wall portion 35, and the front side extension wall portion 39. It is bridged together. That is, the central portion in the vehicle width direction of the peripheral wall portion 15 at the non-standing portion of the outer peripheral rib 9, the central portion in the vehicle width direction of the rear extension wall portion 35, and the front extension wall portion 39 are integrated. The connection wall part 57 which bridge | crosslinks the front-end edge of this is comprised. The connecting wall portion 57 and the standing wall portion 55 constitute a gate-shaped rear side reinforcing portion 59. The vehicle body rear side edge of each standing wall portion 55 is integrally connected to the trapezoidal panel portion 7b from the back side, while the vehicle body front side edge extends to the vehicle body front-rear direction substantially central portion of the rectangular panel portion 7a, and the lid In the closed state, it tilts forward as it goes from the tip to the base. Moreover, the base end of the vehicle body front side edge of each standing wall 55 is located on a substantially straight line L along the vehicle width direction.

  Further, on both sides in the vehicle width direction of the rear extension wall portion 35 on the back side of the rectangular panel portion 7a, the reinforcing wall portions 60 are erected integrally in parallel with each other with the plate surfaces facing each other in the vehicle width direction. The front end edge of the reinforcing wall portion 60 is integrally connected to both end edges in the vehicle width direction of the rear extension wall portion 35.

  In addition, a pair of standing wall reinforcing ribs 61 extending in parallel with each other toward the front of the vehicle body from the vehicle body front side edge of the standing wall portion 55 are integrally formed on the vehicle body front side of the rear reinforcing portion 59 on the back side of the rectangular panel portion 7a. The vehicle body front side edge of the standing wall portion reinforcing rib 61 is integrally connected to the outer peripheral rib 9 on the vehicle body front side. Further, on the vehicle body front side of the rear reinforcing portion 59 on the back side of the rectangular panel portion 7a, the rear end portion of the compatibility wall portion reinforcing rib 61 and the vehicle width direction both ends of the front end of the outer peripheral rib 9 are integrally connected. In the vehicle width direction so as to integrally connect the two rear side lateral ribs 63 extending in the vehicle width direction to each other in parallel with each other and the vehicle width direction both ends of the front end of the outer peripheral rib 9 on the vehicle body front side of the rear side lateral rib 63. Two front lateral ribs 65 extending in parallel to each other are erected integrally as a front reinforcing portion. That is, each rear lateral rib 63 is integrally connected to the vehicle body front side edge of one standing wall 55 via the standing wall reinforcing rib 61, and each front lateral rib 65 is respectively connected via the standing wall reinforcing rib 61. It is integrally connected to the vehicle body front side edge of the compatibility wall portion 55. The rear lateral rib 63 is inclined forward toward the outer side in the vehicle width direction over the entire length, while the front lateral rib 65 is forward only toward both outer sides in the vehicle width direction. It is inclined. The standing wall portion reinforcing rib 61 and the standing wall portion 55 constitute a single vertical rib 62 that extends in the front-rear direction of the vehicle body and intersects the front lateral rib 65.

  Further, on the inner side in the vehicle width direction of the standing wall portion 55 on the back side of the rectangular panel portion 7a, the outer peripheral rib 9 and the trapezoidal panel portion 7b extending in the vehicle front-rear direction and intersecting the front lateral rib 65 and on the vehicle body front side are provided. Three inner vertical ribs 66 extending so as to be integrally connected are erected integrally.

  Further, on the both sides in the vehicle width direction of the standing wall portion 55 on the back side of the rectangular panel portion 7a, it extends in the vehicle body longitudinal direction and intersects with the rear lateral rib 63 and the front lateral rib 65, respectively, A total of four outer vertical ribs 67 integrally connected to 9 are erected integrally. Projection portions 71 projecting from the front side of the vehicle body rear end portion of the outer vertical rib 67 are formed, and the leading edges of the projection portions 71 are integrally connected to the peripheral wall portion 15 on the vehicle body rear side. .

  Further, a plurality of plate-like support ribs 73 whose plate surfaces are directed in the circumferential direction are integrally formed at intervals in the circumferential direction on the outer side of the outer peripheral ribs 9 on the vehicle body front side and in the vehicle width direction on the back side of the rectangular panel portion 7a. It is erected. The leading edge of each support rib 73 is integrally connected to the peripheral wall portion 15, and the inner end edge of each support rib 73 is integrally connected to the outer peripheral rib 9 from the outside.

  Further, plate-like reinforcing ribs 75 whose plate surfaces are directed in the vehicle width direction are erected at portions corresponding to the bulging portion 11 on the back side of the trapezoidal panel portion 7b, and are integrally connected to the bulging portion 11.

  At the time of rear-end collision of a vehicle equipped with the trunk lid 5 configured as described above, the connecting wall portion 57 is not formed at the vehicle body front side edge of each vertical wall portion 55. First, the vehicle body front side end of the vertical wall portion 55 The edge is curved starting from the base end, and then, as indicated by a phantom line in FIG. 3, the lid main body portion 7 is substantially the base end of the vehicle body front side edge of each of the standing wall portions 55, that is, substantially along the vehicle width direction. It bends in a substantially square shape starting from the straight line L. Therefore, the impact load is absorbed, and as a result, the trunk lid 5 is prevented from jumping into the passenger compartment and the impact applied to the occupant is reduced. Moreover, since the vehicle body front side edge of the standing wall portion 55 is curved before the lid main body portion 7 is bent as described above, the impact load is absorbed, so that the impact applied to the occupant can be further reduced. In FIG. 3, the detailed configuration around the through-hole 37 and the striker 49 in the rear extension wall portion 35 and the phantom line of the support rib 73 are omitted.

  Therefore, according to the present embodiment, the rear reinforcing portion 59 forms a closed cross section with the lid main body portion 7 at the vehicle rear portion of the trunk lid 5, so that the rigidity of the rear portion of the vehicle body of the trunk lid 5 is increased and the deformation thereof is improved. And damage can be prevented. Moreover, since the rear side reinforcement part 59 is connected only by the lid main-body part 7 and the standing wall part 55, the sink etc. resulting from a thick reinforcing rib do not generate | occur | produce, but the design property of the trunk lid 5 improves.

  Further, the base end of the vehicle body front side edge of the standing wall portion 55, that is, the starting point of bending at the time of rear-end collision of the vehicle, the vehicle body front portion of the trunk lid 5 whose rigidity is enhanced by the rear side rib 63 and the front side rib 65. Since the rigidity of the starting point relative to both the front and rear sides of the vehicle body is relatively low, the misalignment of the starting point of the bending is caused. Is unlikely to occur.

  Further, since the striker 49 is provided on the connecting wall portion 57 of the rear reinforcing portion 59 that increases the rigidity of the rear portion of the vehicle body of the trunk lid 5, when the trunk lid 5 is closed, the striker 49 is locked on the vehicle body side, that is, on the vehicle body side. Even if the reaction force due to the contact with the latch mechanism acts on the rear reinforcing portion 59, the lid main body portion 7 does not bend greatly, and it is possible to prevent the poor engagement between the two.

  Further, the projecting portion 17 of the trunk lid 5 is set to a closed cross-sectional shape including the side wall portion 13, the peripheral wall portion 15, the outer peripheral rib 9, and the lid main body portion 7, and the outer peripheral rib 9 constituting the closed cross-sectional shape is provided. Since the rear lateral rib 63 and the front lateral rib 65 are supported at both ends in the vehicle width direction at the front end of the vehicle body, the rigidity of the overhang portion 17 is increased. In addition, the load applied to the overhanging portion 17 when the lid is opened and closed is widely dispersed in the lid main body portion 7 in the vehicle width direction via the rear lateral rib 63 and the front lateral rib 65. Therefore, deformation and breakage of the overhang portion 17 due to a load when the lid is opened and closed are prevented.

  Furthermore, since only the side wall 13, the outer peripheral rib 9, the rear side rib 63 and the front side rib 65 are connected to the portion corresponding to the overhanging portion 17 of the lid main body portion 7, it is caused by the dense thick reinforcing ribs. No sink marks or the like occur, and the design of the trunk lid 5 is improved. Further, since only the outer peripheral rib 9 is connected to the outer peripheral edge of the lid main body portion 7, sink marks or the like due to a plurality of reinforcing ribs are not generated, and the design of the trunk lid 5 is improved.

  Further, since the vertical rib 62, the inner vertical rib 66, and the outer vertical rib 67 intersect the front lateral rib 65 to increase the rigidity of the front lateral rib 65, the outer peripheral rib 9 is more reliably supported by the front lateral rib 65. The rigidity of the overhanging portion 17 is further increased. Further, the load applied to the overhanging portion 17 when the lid is opened and closed is widely dispersed in the longitudinal direction of the vehicle body in the lid main body portion 7 through the vertical rib 62, the inner vertical rib 66 and the outer vertical rib 67. Therefore, deformation and breakage of the overhang portion 17 due to a load at the time of opening and closing the lid are more reliably prevented.

  In the above embodiment, the striker 49 is attached to the trunk lid 5 and the latch mechanism is attached to the vehicle body 1. On the contrary, the latch mechanism is attached to the trunk lid 5 as a locking means and the striker 49 is attached to the vehicle body 1. Good.

  Further, in the above embodiment, only one pair of the standing wall portions 55 is provided, but three or more of them may be provided, and the leading edges thereof may be bridged by the connecting wall portion 57. In such a case, the base ends of the vehicle body front side edges of all the three or more standing wall portions 55 may be arranged on a substantially straight line L along the vehicle width direction, or the vehicle bodies of at least a pair of the standing wall portions 55 may be part of the vehicle body. You may arrange | position the base end of a front side edge on the substantially straight line L along a vehicle width direction.

  Further, a part or all of the peripheral wall portion 15 may be integrally extended toward both the outer side and the inner side of the front end edge of the outer peripheral rib 9.

  The present invention is useful as a trunk lid that opens and closes a trunk room opening of an automobile in the vertical direction.

1 body
3 Trunk room opening
5 Trunk lid
7 Lid body
7a Rectangular panel (main surface)
25 Hinge
49 Strike (locking means)
55 Standing wall
57 Connecting wall
59 Rear reinforcement
63 Rear lateral rib (front reinforcement)
65 Front lateral rib (front reinforcement)
L straight line

Claims (4)

The trunk room opening (3) is provided with a pair of hinges (25) at both ends in the vehicle width direction of the front end of the vehicle body of the trunk room opening (3) that is provided with a panel-shaped resin lid main body (7) and opens above the vehicle body (1). The trunk lid is connected so that it can be opened and closed vertically.
A plurality of standing wall portions (55) that are integrally erected with the plate surfaces facing each other in the vehicle width direction in the vehicle width direction middle of the rear portion of the vehicle body on the back side of the main surface (7a) of the lid main body portion (7); A connecting wall portion (57) that bridges the leading edge of the standing wall portion (55) integrally, and at least a pair of the standing wall portions (55) of the plurality of standing wall portions (55) at the front side edge of the vehicle body The rear end of the resin (59) is located on a substantially straight line (L) along the vehicle width direction,
At the time of rear-end collision of the automobile, the lid main body (7) is substantially abbreviated starting from the base end of the front edge of the vehicle body located on a substantially straight line (L) along the vehicle width direction of each vertical wall (55). Trunk lid characterized by bending in a letter shape. The trunk lid according to claim 1, wherein
A trunk lid characterized in that a front end edge of the vehicle body of the standing wall portion (55) is inclined upward as it goes from the front end to the base end in a lid closed state. The trunk lid according to claim 1 or 2,
On the vehicle body front side of the rear reinforcing portion (59) on the back side of the main surface (7a) of the lid main body portion (7), it is integrally connected to at least one vehicle body front edge of the plurality of standing wall portions (55). The trunk lid is characterized in that a front reinforcing part (63, 65) is provided protruding in the vehicle width direction. In the trunk lid of any one of Claims 1-3,
A trunk lid, wherein a locking means (49) for holding a lid closed state is attached to the connecting wall portion (57) of the rear reinforcing portion (59).

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