JP2006111105A - Body structure responding to pedestrian protection of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body structure responding to pedestrian protection effectively reducing a head injury value (HIC value) to a pedestrian as much as possible. <P>SOLUTION: The vehicle body structure responding to pedestrian protection is provided with a deck garnish 3 arranged so as to close a lower part of a windshield glass 1 and a rear part of an engine hood 2; and a front deck extension 9 extending from a front deck 11 toward a front side of the body. The deck garnish 3 is formed by two members of a deck garnish lower 5 and a deck garnish upper 4. The lower part of the deck garnish lower 5 is bonded to a front part of the front deck extension 9 and the upper part of the deck garnish lower 5 has a bonding part bonded to the front part of the deck garnish upper 4 through a resin grip 7. The bonding part is removably constituted through a lock hole-like notch 14 formed on the upper part of the deck garnish lower 5 and penetrated through the resin grip 7 by load of a predetermined or higher from above. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pedestrian protection vehicle body structure for a vehicle such as an automobile, and more specifically, the head injury value (HIC value) when a pedestrian's head collides around a deck garnish due to a traffic accident or the like is possible. The present invention relates to a vehicle pedestrian protection vehicle body structure that can be reduced automatically.

  In general, a deck garnish of a vehicle such as an automobile needs to be firmly attached to a vehicle body in order to have a practical sense of rigidity, and the rigidity of a single item needs to be fixed to some extent. However, if the rigidity is too high for that purpose, there is a problem that the head injury value (HIC value) increases when the head of the pedestrian collides with the deck garnish around a traffic accident or the like. In the future, this head injury value (HIC value) will be regulated in other countries.

  For example, as shown in FIG. 4, the conventional deck garnish 100 is disposed so as to close the lower upper surface of the windshield glass 101 of the vehicle and the rear lower surface of the engine hood 102 and extends in the vehicle width direction. . The front mating surface 100a of the deck garnish 100 and the front mating surface 104a of the front deck extension 104 that extends from the front deck 103 toward the front of the vehicle body in the vehicle width direction are joined by a resin clip 105. At the same time, the front mating surface 100a of the deck garnish 100 is configured to be detachable from the front mating surface 104a of the front deck extension 104 when a force greater than a predetermined value is applied to the deck garnish 100 obliquely from the upper front. For example, the shaft portion of the resin clip 105 is pulled out from a notch (not shown) formed on the front mating surface 100a of the deck garnish 100 (see Patent Document 1).

  Therefore, when an impact force of a predetermined value or more is applied to the rear portion of the engine hood 102 by the head of a pedestrian due to a collision, due to the impact force transmitted through the support portion where the weather strip 106 is arranged, The front mating surface 100a of the deck garnish 100 falls off from the front mating surface 104a of the front deck extension 104, and the head injury value (HIC value) to the pedestrian can be reduced.

JP 2002-46649 A

  By the way, the above-described conventional deck garnish 100 is formed of a synthetic resin and has a predetermined height between the front mating surface 100a of the deck garnish 100 and the support portion on which the weather strip 106 is disposed. Because of the presence of the vertical wall 100b, the front mating surface 100a of the deck garnish 100 falls off the front mating surface 104a of the front deck extension 104 even if an impact force is applied to the rear of the engine hood 102 by the head of the pedestrian. Since the support rigidity up to this is relatively high, there has been a problem that the head injury value (HIC value) to pedestrians cannot be sufficiently reduced.

  Accordingly, an object of the present invention is to provide a vehicle pedestrian protection compatible vehicle body structure that can reduce the head injury value (HIC value) to a pedestrian as much as possible.

  In order to achieve the above object, a vehicle pedestrian protection vehicle body structure according to the present invention is disposed so as to close a space between a vehicle windshield glass lower upper surface and an engine hood rear lower surface and extends in the vehicle width direction. A deck garnish and a plate-like extension member extending in the vehicle width direction extending from the front deck toward the front of the vehicle body. The deck garnish is formed of two members, a deck garnish lower and a deck garnish upper. The lower portion of the deck garnish lower is coupled to the front portion of the extension member, and the upper portion of the deck garnish lower has a coupling portion coupled to the front portion of the deck garnish upper via a fastening member, The coupling part is configured to be disengageable through the disengaging means by a load exceeding a predetermined value from above. To.

  In addition, the fastening member is a resin clip that vertically penetrates the coupling portion.

  Further, as the detachment means, a keyhole-shaped notch is formed in the upper part of the deck garnish lower so that the shaft portion of the fastening member can be forcibly extracted rearward of the vehicle.

  Further, as the separating means, a mating surface between the upper portion of the deck garnish lower including the coupling portion and the front portion of the deck garnish upper is formed as an inclined surface inclined downward from the front of the vehicle to the rear. To do.

  According to the configuration of the present invention, the deck garnish is divided into a lower part and an upper part, and the fastening strength of the connecting portion can be set to a practically no lower limit level. While maintaining, an increase in head injury value (HIC) when a pedestrian's head collides around the deck garnish can be suppressed.

  Further, since the fastening member is a resin clip, a general-purpose product can be used.

  Further, as the detaching means, a keyhole-shaped notch is formed on the upper portion of the deck garnish lower so that the shaft portion of the fastening member can be forcibly pulled out to the rear of the vehicle, so that the deck garnish upper is connected to the deck garnish lower. It is possible to reliably remove it from the cutout and to easily process the notch.

  Further, as the detaching means, a mating surface between the upper portion of the deck garnish lower including the coupling portion and the front portion of the deck garnish upper is formed on an inclined surface that is inclined downward from the front of the vehicle to the rear. In response to the load input, a component force can be generated between the mating surfaces to slide the mating surfaces to each other, and the deck garnish upper can be more reliably detached from the deck garnish lower.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a vehicle body structure corresponding to pedestrian protection for vehicles according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view of a vehicle pedestrian protection vehicle body structure showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of a deck garnish, and FIG.

  As shown in FIG. 1, a synthetic resin deck garnish 3 is disposed to extend between the lower upper surface of the windshield glass 1 and the rear lower surface of the engine hood 2 in the vehicle width direction. As shown in FIG. 2, the deck garnish 3 is divided into a deck garnish upper 4 having a substantially hat-shaped cross section and a deck garnish lower 5 having a substantially Z-shaped cross section.

  The rear part of the deck garnish upper 4 is joined to the lower upper surface of the windshield glass 1 via the sealer 6, and the front part of the deck garnish upper 4 is formed on the mating surface 4 a and formed on the upper part of the deck garnish lower 5. The upper mating surface 5a and the resin clip 7 as a fastening member are coupled at a plurality of points over the entire width of the deck garnish 3 (joint portion). The resin clip 7 is integrally suspended from the lower surface portion of the weather strip 8 laid on the mating surface 4 a of the deck garnish upper 4, and the mating surface 4 a of the deck garnish upper 4 and the upper mating surface of the deck garnish lower 5. It penetrates 5a up and down.

  The lower part of the deck garnish lower 5 is formed on the lower mating surface 5b and extends over the entire width of the deck garnish 3 by the mating surface 9a formed at the front of the sheet metal front deck extension (extension member) 9 and the resin clip 10. It is connected at multiple points.

  The front deck extension 9 has a dish-like shape extending in the vehicle width direction from the front deck 11 having a closed cross section formed by the front deck outer 11a and the front deck inner 11b through the connecting member 12 to the front of the vehicle. The wiper unit 13 is disposed in the upper space.

  In this embodiment, when a load of a predetermined value or more is input from the upper side (front obliquely) to the connecting portion between the mating surface 4a of the deck garnish upper 4 and the upper mating surface 5a of the deck garnish lower 5, it will be described later. It is configured to be detachable through the detaching means.

  That is, as the detaching means, as shown in FIG. 3, the through-hole portion of the resin clip 7 formed in the upper mating surface 5a of the deck garnish lower 5 is used, and the shaft portion of the resin clip 7 is forcibly pulled out to the vehicle rear. Is formed in the keyhole-shaped notch 14.

Further, as the detaching means, the mating surface 4a of the deck garnish upper 4 and the upper mating surface 5a of the deck garnish lower 5 are formed in an inclined surface that inclines downward from the front of the vehicle to the rear, and (from front obliquely) upward For this load input F, a component force F ₂ along the notch 14 is generated between the mating surfaces 4a and 5a so that the mating surfaces 4a and 5a can be slid relative to each other.

  As described above, in this embodiment, the synthetic resin deck garnish 3 is divided into the deck garnish lower 5 and the deck garnish upper 4, and the mating surface 4a of the deck garnish upper 4 and the upper mating surface 5a of the deck garnish lower 5 It was made possible to set the fastening strength of the joint portion by the resin clip 7 to a lower limit level that has no problem in practice.

  The impact energy when the pedestrian's head collides is first consumed for the deformation of the engine hood 2 and the deformation of the deck garnish 3 itself. Next, the energy is consumed for detachment of the joint portion by the resin clip 7 set at a plurality of points over the entire width of the deck garnish 3.

  At this time, if the fastening strength, position, number of points, etc. of the joint portion by the resin clip 7 are appropriately set, the separation between the parts proceeds with a relatively low deformation load value, and efficient energy absorption is performed within a limited layout. It is possible to suppress an increase in head injury value (HIC) when a pedestrian's head collides around the deck garnish while maintaining practical rigidity.

In this embodiment, since the resin clip 7 is used as the fastening member, a general-purpose product can be used effectively. Further, as a detaching means, a keyhole-shaped notch 14 is formed on the upper mating surface 5a of the deck garnish lower 5 so that the shaft portion of the resin clip 7 can be forcibly pulled out rearward of the vehicle. Can be reliably detached from the deck garnish lower 5 and the processing of the notch 14 is easy. Further, as a disengagement means, the mating surface 4a of the deck garnish upper 4 and the upper mating surface 5a of the deck garnish lower 5 are formed on an inclined surface that inclines downward from the front to the rear of the vehicle. Since the component F ₂ along the notch 14 can be generated between the mating surfaces 4a and 5a with respect to the input F so that the mating surfaces 4a and 5a can slide with each other, the deck garnish upper 4 is It can be more reliably detached from the deck garnish lower 5.

  Needless to say, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the resin clip 7 may be formed separately from the weather strip 8, and a bolt / nut, a pin, or the like may be used instead of the resin clip 7 as a fastening member.

It is sectional drawing of the vehicle body structure corresponding to a pedestrian protection of the vehicle which shows one Example of this invention. It is an exploded perspective view of the same deck garnish. It is explanatory drawing of a removal means similarly. It is sectional drawing of the vehicle body structure corresponding to the pedestrian protection of the conventional vehicle.

Explanation of symbols

1 windshield glass, 2 engine hood, 3 deck garnish, 4 deck garnish upper, 4a mating surface, 5 deck garnish lower, 5a upper mating surface, 5b mating surface, 6 sealer, 7 resin clip, 8 weather strip, 9 front deck Extension, 9a mating surface, 10 resin clip, 11 front deck, 11a front deck outer, 11b front deck inner, 12 connecting member, 13 wiper unit, 14 notch.

Claims (4)

A deck garnish extending in the width direction of the vehicle and disposed so as to block between a windshield glass lower upper surface of the vehicle and an engine hood rear lower surface;
A plate-shaped extension member that extends from the front deck toward the front of the vehicle body in the vehicle width direction, and
The deck garnish is formed of two members, a deck garnish lower and a deck garnish upper,
The lower portion of the deck garnish lower is coupled to the front portion of the extension member, and the upper portion of the deck garnish lower has a coupling portion coupled to the front portion of the deck garnish upper via a fastening member,
The vehicle body structure corresponding to pedestrian protection for a vehicle, wherein the coupling portion is configured to be disengageable via a disengagement means by a load greater than a predetermined value from above.   The vehicle body structure for vehicle pedestrian protection according to claim 1, wherein the fastening member is a resin clip that vertically penetrates the coupling portion.   3. The keyhole-shaped notch is formed as the detachment means on the upper portion of the deck garnish lower so that the shaft portion of the fastening member can be forcibly extracted rearward of the vehicle. Body structure for pedestrian protection of Japanese vehicles. The mating surface of the upper part of the deck garnish lower including the coupling part and the front part of the deck garnish upper is formed as an inclined surface inclined downward from the front of the vehicle to the rear as the detachment means. Item 4. The vehicle structure for pedestrian protection of vehicles according to item 1, 2 or 3.

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